From c08ae18560aaed50fed306a2e11f36ce70130f65 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Sat, 19 Dec 2015 14:14:54 +0100 Subject: iio-light: Use a signed return type for ltr501_match_samp_freq() The return type "unsigned int" was used by the ltr501_match_samp_freq() function despite of the aspect that it will eventually return a negative error code. Improve this implementation detail by deletion of the type modifier then. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Acked-by: Peter Meerwald-Stadler Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/light/ltr501.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 809a961b9a7f..6bf89d8f3741 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -180,7 +180,7 @@ static const struct ltr501_samp_table ltr501_ps_samp_table[] = { {500000, 2000000} }; -static unsigned int ltr501_match_samp_freq(const struct ltr501_samp_table *tab, +static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab, int len, int val, int val2) { int i, freq; -- cgit v1.2.3 From 9979e320b559264333a77c73131ae88cefca15e5 Mon Sep 17 00:00:00 2001 From: Matt Ranostay Date: Sat, 26 Dec 2015 20:56:30 -0800 Subject: iio: proximity: lidar: correct return value lidar_i2c_xfer() function was never a non-positive value on error, and this correct that with a -EIO return code. Fixes: 366e65633cf4 ("iio: proximity: lidar: optimize i2c transactions") Signed-off-by: Matt Ranostay Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c index 93e29fb67fa0..db35e04a0637 100644 --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c @@ -87,7 +87,7 @@ static int lidar_i2c_xfer(struct lidar_data *data, u8 reg, u8 *val, int len) ret = i2c_transfer(client->adapter, msg, 2); - return (ret == 2) ? 0 : ret; + return (ret == 2) ? 0 : -EIO; } static int lidar_smbus_xfer(struct lidar_data *data, u8 reg, u8 *val, int len) -- cgit v1.2.3 From 01cc5235604d61018712c11a14d74230f6a38bf4 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Sat, 2 Jan 2016 14:04:39 +0100 Subject: iio: add IIO_TRIGGER dependency to STK8BA50 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Ran into this on UML: drivers/iio/accel/stk8ba50.c: In function ‘stk8ba50_data_rdy_trigger_set_state’: drivers/iio/accel/stk8ba50.c:163:9: error: implicit declaration of function ‘iio_trigger_get_drvdata’ [-Werror=implicit-function-declaration] iio_trigger_get_drvdata() is defined only when IIO_TRIGGER is selected. Signed-off-by: Vegard Nossum Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/accel/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index 969428dd6329..16cc5c691a55 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -173,6 +173,7 @@ config STK8312 config STK8BA50 tristate "Sensortek STK8BA50 3-Axis Accelerometer Driver" depends on I2C + depends on IIO_TRIGGER help Say yes here to get support for the Sensortek STK8BA50 3-axis accelerometer. -- cgit v1.2.3 From 005ce0713006a76d2b0c924ce0e2629e5d8510c3 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Sat, 2 Jan 2016 14:04:40 +0100 Subject: iio: add HAS_IOMEM dependency to VF610_ADC Ran into this on UML: drivers/built-in.o: In function `vf610_adc_probe': drivers/iio/adc/vf610_adc.c:744: undefined reference to `devm_ioremap_resource' devm_ioremap_resource() is defined only when HAS_IOMEM is selected. Signed-off-by: Vegard Nossum Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 7868c744fd4b..1e7aded53117 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -372,6 +372,7 @@ config TWL6030_GPADC config VF610_ADC tristate "Freescale vf610 ADC driver" depends on OF + depends on HAS_IOMEM select IIO_BUFFER select IIO_TRIGGERED_BUFFER help -- cgit v1.2.3 From 97a249e98a72d6b79fb7350a8dd56b147e9d5bdb Mon Sep 17 00:00:00 2001 From: Yong Li Date: Wed, 6 Jan 2016 09:09:43 +0800 Subject: iio: dac: mcp4725: set iio name property in sysfs Without this change, the name entity for mcp4725 is missing in /sys/bus/iio/devices/iio\:device*/name With this change, name is reported correctly Signed-off-by: Yong Li Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/dac/mcp4725.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 43d14588448d..b4dde8315210 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -300,6 +300,7 @@ static int mcp4725_probe(struct i2c_client *client, data->client = client; indio_dev->dev.parent = &client->dev; + indio_dev->name = id->name; indio_dev->info = &mcp4725_info; indio_dev->channels = &mcp4725_channel; indio_dev->num_channels = 1; -- cgit v1.2.3 From 354210f8046cc801d6001f10c5c32967932b09a2 Mon Sep 17 00:00:00 2001 From: Bob Copeland Date: Sat, 19 Dec 2015 09:59:37 -0500 Subject: Revert "mac80211_hwsim: support any address in userspace" This reverts commit cd37a90b2a417e5882414e19954eeed174aa4d29. Different userspace programs interpreted HWSIM_ATTR_ADDR_TRANSMITTER and HWSIM_ATTR_ADDR_RECEIVER differently: some expected it to be an unchanging hardware address that is tied to the radio despite which address is configured on the interface, while others expected to be a copy of the address in the frame (the configured address). The intent of the original authors is unclear. The latter interpretation doesn't really work properly with multiple vifs and broadcast frames. Also, as the TA is already in the frame, userspace programs can actually support configured addresses in the former interpretation by mapping between them and the supplied HWSIM_ATTR_ADDR_TRANSMITTER. So, in the interest of API stability, revert to the previous mode of operation and going forward use the former interpretation. Signed-off-by: Bob Copeland Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index c32889a1e39c..a28414c50edf 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -991,7 +991,8 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw, goto nla_put_failure; } - if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2)) + if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, + ETH_ALEN, data->addresses[1].addr)) goto nla_put_failure; /* We get the skb->data */ @@ -2736,7 +2737,7 @@ static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr) spin_lock_bh(&hwsim_radio_lock); list_for_each_entry(data, &hwsim_radios, list) { - if (mac80211_hwsim_addr_match(data, addr)) { + if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) { _found = true; break; } -- cgit v1.2.3 From fa34e6dd44d7c02c8a8468ce4a52a7506f907bef Mon Sep 17 00:00:00 2001 From: Gabriele Mazzotta Date: Tue, 12 Jan 2016 16:21:39 +0100 Subject: iio: light: acpi-als: Report data as processed As per the ACPI specification (Revision 5.0) [1], the data coming from the sensor represent the ambient light illuminance reading expressed in lux. So use IIO_CHAN_INFO_PROCESSED to signify that the data are pre-processed. However, to keep backward ABI compatibility, the IIO_CHAN_INFO_RAW bit is not removed. [1] http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf This issue has also been responsible for at least one userspace bug report hence marking what is a small semantic fix really for stable. [2] https://github.com/hadess/iio-sensor-proxy/issues/46 Signed-off-by: Gabriele Mazzotta Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/light/acpi-als.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c index 60537ec0c923..53201d99a16c 100644 --- a/drivers/iio/light/acpi-als.c +++ b/drivers/iio/light/acpi-als.c @@ -54,7 +54,9 @@ static const struct iio_chan_spec acpi_als_channels[] = { .realbits = 32, .storagebits = 32, }, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + /* _RAW is here for backward ABI compatibility */ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_PROCESSED), }, }; @@ -152,7 +154,7 @@ static int acpi_als_read_raw(struct iio_dev *indio_dev, s32 temp_val; int ret; - if (mask != IIO_CHAN_INFO_RAW) + if ((mask != IIO_CHAN_INFO_PROCESSED) && (mask != IIO_CHAN_INFO_RAW)) return -EINVAL; /* we support only illumination (_ALI) so far. */ -- cgit v1.2.3 From 9d0be85d4e2cfa2519ae16efe7ff4a7150c43c0b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Fri, 1 Jan 2016 18:05:34 +0000 Subject: iio:adc:ti_am335x_adc Fix buffered mode by identifying as software buffer. Whilst this part has a hardware buffer, the identifcation that IIO cares about is the userspace facing end. It this case we push individual elements from the hardware fifo into the software interface (specifically a kfifo) rather than providing direct reads through to a hardware buffer (as we still do in the sca3000 for example). Technically the original specification as a hardware buffer could be considered wrong, but it didn't matter until the patch listed below. Result is that any attempt to enable the buffer will return -EINVAL Fixes: 225d59adf1c8 ("iio: Specify supported modes for buffers") Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti_am335x_adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 942320e32753..c1e05532d437 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -289,7 +289,7 @@ static int tiadc_iio_buffered_hardware_setup(struct iio_dev *indio_dev, goto error_kfifo_free; indio_dev->setup_ops = setup_ops; - indio_dev->modes |= INDIO_BUFFER_HARDWARE; + indio_dev->modes |= INDIO_BUFFER_SOFTWARE; return 0; -- cgit v1.2.3 From 5dc3b7b9eb7efbd0dd57cef50ed29c2a709bf51b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 15 Jan 2016 16:00:30 +0100 Subject: brcmfmac: add missing include linux/module.h is required for defining module parameters Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index 4265b50faa98..cfee477a6eb1 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include "core.h" -- cgit v1.2.3 From b7e2d195cc523bd92ed7a64aac089421dbab2a2d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 18 Jan 2016 20:39:56 +0100 Subject: ssb: mark ssb_bus_register as __maybe_unused The SoC variant of the ssb code is now optional like the other ones, which means we can build the framwork without any front-end, but that results in a warning: drivers/ssb/main.c:616:12: warning: 'ssb_bus_register' defined but not used [-Wunused-function] This annotates the ssb_bus_register function as __maybe_unused to shut up the warning. A configuration like this will not work on any hardware of course, but we still want this to silently build without warnings if the configuration is allowed in the first place. Signed-off-by: Arnd Bergmann Fixes: 845da6e58e19 ("ssb: add Kconfig entry for compiling SoC related code") Acked-by: Michael Buesch Signed-off-by: Kalle Valo --- drivers/ssb/main.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index cde5ff7529eb..d1a750760cf3 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -613,9 +613,10 @@ out: return err; } -static int ssb_bus_register(struct ssb_bus *bus, - ssb_invariants_func_t get_invariants, - unsigned long baseaddr) +static int __maybe_unused +ssb_bus_register(struct ssb_bus *bus, + ssb_invariants_func_t get_invariants, + unsigned long baseaddr) { int err; -- cgit v1.2.3 From e0045bf80f62779ba75ba04513020d60e59f5298 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Tue, 19 Jan 2016 12:39:24 +0100 Subject: brcmfmac: fix sdio sg table alloc crash With commit 7d34b0560567 ("brcmfmac: Move all module parameters to one place") a bug was introduced causing a null pointer exception. This patch fixes the bug by initializing the sg table till after the settings have been initialized. Fixes: 7d34b0560567 ("brcmfmac: Move all module parameters to one place") Reported-by: Marc Zyngier Tested-by: Marc Zyngier Reviewed-by: Arend Van Spriel Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo --- .../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 40 ++++++++-------------- .../wireless/broadcom/brcm80211/brcmfmac/sdio.c | 5 +++ .../wireless/broadcom/brcm80211/brcmfmac/sdio.h | 1 + 3 files changed, 21 insertions(+), 25 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c index 53637399bb99..b98db8a0a069 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c @@ -879,11 +879,24 @@ int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) return 0; } -static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) +void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) { + struct sdio_func *func; + struct mmc_host *host; + uint max_blocks; uint nents; int err; + func = sdiodev->func[2]; + host = func->card->host; + sdiodev->sg_support = host->max_segs > 1; + max_blocks = min_t(uint, host->max_blk_count, 511u); + sdiodev->max_request_size = min_t(uint, host->max_req_size, + max_blocks * func->cur_blksize); + sdiodev->max_segment_count = min_t(uint, host->max_segs, + SG_MAX_SINGLE_ALLOC); + sdiodev->max_segment_size = host->max_seg_size; + if (!sdiodev->sg_support) return; @@ -1021,9 +1034,6 @@ static void brcmf_sdiod_host_fixup(struct mmc_host *host) static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) { - struct sdio_func *func; - struct mmc_host *host; - uint max_blocks; int ret = 0; sdiodev->num_funcs = 2; @@ -1054,26 +1064,6 @@ static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) goto out; } - /* - * determine host related variables after brcmf_sdiod_probe() - * as func->cur_blksize is properly set and F2 init has been - * completed successfully. - */ - func = sdiodev->func[2]; - host = func->card->host; - sdiodev->sg_support = host->max_segs > 1; - max_blocks = min_t(uint, host->max_blk_count, 511u); - sdiodev->max_request_size = min_t(uint, host->max_req_size, - max_blocks * func->cur_blksize); - sdiodev->max_segment_count = min_t(uint, host->max_segs, - SG_MAX_SINGLE_ALLOC); - sdiodev->max_segment_size = host->max_seg_size; - - /* allocate scatter-gather table. sg support - * will be disabled upon allocation failure. - */ - brcmf_sdiod_sgtable_alloc(sdiodev); - ret = brcmf_sdiod_freezer_attach(sdiodev); if (ret) goto out; @@ -1084,7 +1074,7 @@ static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) ret = -ENODEV; goto out; } - brcmf_sdiod_host_fixup(host); + brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host); out: if (ret) brcmf_sdiod_remove(sdiodev); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c index dd6614332836..a14d9d9da094 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -4114,6 +4114,11 @@ struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) goto fail; } + /* allocate scatter-gather table. sg support + * will be disabled upon allocation failure. + */ + brcmf_sdiod_sgtable_alloc(bus->sdiodev); + /* Query the F2 block size, set roundup accordingly */ bus->blocksize = bus->sdiodev->func[2]->cur_blksize; bus->roundup = min(max_roundup, bus->blocksize); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h index 5ec7a6d87672..23f223150cef 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h @@ -342,6 +342,7 @@ int brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, /* Issue an abort to the specified function */ int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn); +void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev); void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev, enum brcmf_sdiod_state state); #ifdef CONFIG_PM_SLEEP -- cgit v1.2.3 From 5f2f3cad8b878b23f17a11dd5af4f4a2cc41c797 Mon Sep 17 00:00:00 2001 From: Sowmini Varadhan Date: Mon, 18 Jan 2016 16:12:09 -0500 Subject: sunvnet: Initialize network_header and transport_header in vnet_rx_one() vnet_fullcsum() accesses ip_hdr() and transport header to compute the checksum for IPv4 packets, so these need to be initialized in skb created in vnet_rx_one(). Signed-off-by: Sowmini Varadhan Signed-off-by: David S. Miller --- drivers/net/ethernet/sun/sunvnet.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index cc106d892e29..23fa29877f5b 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -389,17 +389,27 @@ static int vnet_rx_one(struct vnet_port *port, struct vio_net_desc *desc) if (vio_version_after_eq(&port->vio, 1, 8)) { struct vio_net_dext *dext = vio_net_ext(desc); + skb_reset_network_header(skb); + if (dext->flags & VNET_PKT_HCK_IPV4_HDRCKSUM) { if (skb->protocol == ETH_P_IP) { - struct iphdr *iph = (struct iphdr *)skb->data; + struct iphdr *iph = ip_hdr(skb); iph->check = 0; ip_send_check(iph); } } if ((dext->flags & VNET_PKT_HCK_FULLCKSUM) && - skb->ip_summed == CHECKSUM_NONE) - vnet_fullcsum(skb); + skb->ip_summed == CHECKSUM_NONE) { + if (skb->protocol == htons(ETH_P_IP)) { + struct iphdr *iph = ip_hdr(skb); + int ihl = iph->ihl * 4; + + skb_reset_transport_header(skb); + skb_set_transport_header(skb, ihl); + vnet_fullcsum(skb); + } + } if (dext->flags & VNET_PKT_HCK_IPV4_HDRCKSUM_OK) { skb->ip_summed = CHECKSUM_PARTIAL; skb->csum_level = 0; -- cgit v1.2.3 From 849674e4fb175e47b7504249f7367367b18fe6a1 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Wed, 20 Jan 2016 13:52:20 -0800 Subject: MD: rename some functions These short function names are hard to search. Rename them to make vim happy. Signed-off-by: Shaohua Li --- drivers/md/faulty.c | 18 +++++++++--------- drivers/md/raid1.c | 21 +++++++++++---------- drivers/md/raid10.c | 20 ++++++++++---------- drivers/md/raid5.c | 45 +++++++++++++++++++++++---------------------- 4 files changed, 53 insertions(+), 51 deletions(-) (limited to 'drivers') diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index 4a8e15058e8b..685aa2d77e25 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -170,7 +170,7 @@ static void add_sector(struct faulty_conf *conf, sector_t start, int mode) conf->nfaults = n+1; } -static void make_request(struct mddev *mddev, struct bio *bio) +static void faulty_make_request(struct mddev *mddev, struct bio *bio) { struct faulty_conf *conf = mddev->private; int failit = 0; @@ -226,7 +226,7 @@ static void make_request(struct mddev *mddev, struct bio *bio) generic_make_request(bio); } -static void status(struct seq_file *seq, struct mddev *mddev) +static void faulty_status(struct seq_file *seq, struct mddev *mddev) { struct faulty_conf *conf = mddev->private; int n; @@ -259,7 +259,7 @@ static void status(struct seq_file *seq, struct mddev *mddev) } -static int reshape(struct mddev *mddev) +static int faulty_reshape(struct mddev *mddev) { int mode = mddev->new_layout & ModeMask; int count = mddev->new_layout >> ModeShift; @@ -299,7 +299,7 @@ static sector_t faulty_size(struct mddev *mddev, sector_t sectors, int raid_disk return sectors; } -static int run(struct mddev *mddev) +static int faulty_run(struct mddev *mddev) { struct md_rdev *rdev; int i; @@ -327,7 +327,7 @@ static int run(struct mddev *mddev) md_set_array_sectors(mddev, faulty_size(mddev, 0, 0)); mddev->private = conf; - reshape(mddev); + faulty_reshape(mddev); return 0; } @@ -344,11 +344,11 @@ static struct md_personality faulty_personality = .name = "faulty", .level = LEVEL_FAULTY, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = faulty_make_request, + .run = faulty_run, .free = faulty_free, - .status = status, - .check_reshape = reshape, + .status = faulty_status, + .check_reshape = faulty_reshape, .size = faulty_size, }; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c4b913409226..4e3843f7d245 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1044,7 +1044,7 @@ static void raid1_unplug(struct blk_plug_cb *cb, bool from_schedule) kfree(plug); } -static void make_request(struct mddev *mddev, struct bio * bio) +static void raid1_make_request(struct mddev *mddev, struct bio * bio) { struct r1conf *conf = mddev->private; struct raid1_info *mirror; @@ -1422,7 +1422,7 @@ read_again: wake_up(&conf->wait_barrier); } -static void status(struct seq_file *seq, struct mddev *mddev) +static void raid1_status(struct seq_file *seq, struct mddev *mddev) { struct r1conf *conf = mddev->private; int i; @@ -1439,7 +1439,7 @@ static void status(struct seq_file *seq, struct mddev *mddev) seq_printf(seq, "]"); } -static void error(struct mddev *mddev, struct md_rdev *rdev) +static void raid1_error(struct mddev *mddev, struct md_rdev *rdev) { char b[BDEVNAME_SIZE]; struct r1conf *conf = mddev->private; @@ -2472,7 +2472,8 @@ static int init_resync(struct r1conf *conf) * that can be installed to exclude normal IO requests. */ -static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipped) +static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr, + int *skipped) { struct r1conf *conf = mddev->private; struct r1bio *r1_bio; @@ -2890,7 +2891,7 @@ static struct r1conf *setup_conf(struct mddev *mddev) } static void raid1_free(struct mddev *mddev, void *priv); -static int run(struct mddev *mddev) +static int raid1_run(struct mddev *mddev) { struct r1conf *conf; int i; @@ -3170,15 +3171,15 @@ static struct md_personality raid1_personality = .name = "raid1", .level = 1, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = raid1_make_request, + .run = raid1_run, .free = raid1_free, - .status = status, - .error_handler = error, + .status = raid1_status, + .error_handler = raid1_error, .hot_add_disk = raid1_add_disk, .hot_remove_disk= raid1_remove_disk, .spare_active = raid1_spare_active, - .sync_request = sync_request, + .sync_request = raid1_sync_request, .resize = raid1_resize, .size = raid1_size, .check_reshape = raid1_reshape, diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index ce959b4ae4df..1c1447dd3417 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1442,7 +1442,7 @@ retry_write: one_write_done(r10_bio); } -static void make_request(struct mddev *mddev, struct bio *bio) +static void raid10_make_request(struct mddev *mddev, struct bio *bio) { struct r10conf *conf = mddev->private; sector_t chunk_mask = (conf->geo.chunk_mask & conf->prev.chunk_mask); @@ -1484,7 +1484,7 @@ static void make_request(struct mddev *mddev, struct bio *bio) wake_up(&conf->wait_barrier); } -static void status(struct seq_file *seq, struct mddev *mddev) +static void raid10_status(struct seq_file *seq, struct mddev *mddev) { struct r10conf *conf = mddev->private; int i; @@ -1562,7 +1562,7 @@ static int enough(struct r10conf *conf, int ignore) _enough(conf, 1, ignore); } -static void error(struct mddev *mddev, struct md_rdev *rdev) +static void raid10_error(struct mddev *mddev, struct md_rdev *rdev) { char b[BDEVNAME_SIZE]; struct r10conf *conf = mddev->private; @@ -2802,7 +2802,7 @@ static int init_resync(struct r10conf *conf) * */ -static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, +static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr, int *skipped) { struct r10conf *conf = mddev->private; @@ -3523,7 +3523,7 @@ static struct r10conf *setup_conf(struct mddev *mddev) return ERR_PTR(err); } -static int run(struct mddev *mddev) +static int raid10_run(struct mddev *mddev) { struct r10conf *conf; int i, disk_idx, chunk_size; @@ -4617,15 +4617,15 @@ static struct md_personality raid10_personality = .name = "raid10", .level = 10, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = raid10_make_request, + .run = raid10_run, .free = raid10_free, - .status = status, - .error_handler = error, + .status = raid10_status, + .error_handler = raid10_error, .hot_add_disk = raid10_add_disk, .hot_remove_disk= raid10_remove_disk, .spare_active = raid10_spare_active, - .sync_request = sync_request, + .sync_request = raid10_sync_request, .quiesce = raid10_quiesce, .size = raid10_size, .resize = raid10_resize, diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index a086014dcd49..b4f02c9959f2 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2496,7 +2496,7 @@ static void raid5_build_block(struct stripe_head *sh, int i, int previous) dev->sector = raid5_compute_blocknr(sh, i, previous); } -static void error(struct mddev *mddev, struct md_rdev *rdev) +static void raid5_error(struct mddev *mddev, struct md_rdev *rdev) { char b[BDEVNAME_SIZE]; struct r5conf *conf = mddev->private; @@ -2958,7 +2958,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, * If several bio share a stripe. The bio bi_phys_segments acts as a * reference count to avoid race. The reference count should already be * increased before this function is called (for example, in - * make_request()), so other bio sharing this stripe will not free the + * raid5_make_request()), so other bio sharing this stripe will not free the * stripe. If a stripe is owned by one stripe, the stripe lock will * protect it. */ @@ -5135,7 +5135,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi) } } -static void make_request(struct mddev *mddev, struct bio * bi) +static void raid5_make_request(struct mddev *mddev, struct bio * bi) { struct r5conf *conf = mddev->private; int dd_idx; @@ -5225,7 +5225,7 @@ static void make_request(struct mddev *mddev, struct bio * bi) new_sector = raid5_compute_sector(conf, logical_sector, previous, &dd_idx, NULL); - pr_debug("raid456: make_request, sector %llu logical %llu\n", + pr_debug("raid456: raid5_make_request, sector %llu logical %llu\n", (unsigned long long)new_sector, (unsigned long long)logical_sector); @@ -5575,7 +5575,8 @@ ret: return retn; } -static inline sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipped) +static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_nr, + int *skipped) { struct r5conf *conf = mddev->private; struct stripe_head *sh; @@ -6674,7 +6675,7 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded return 0; } -static int run(struct mddev *mddev) +static int raid5_run(struct mddev *mddev) { struct r5conf *conf; int working_disks = 0; @@ -7048,7 +7049,7 @@ static void raid5_free(struct mddev *mddev, void *priv) mddev->to_remove = &raid5_attrs_group; } -static void status(struct seq_file *seq, struct mddev *mddev) +static void raid5_status(struct seq_file *seq, struct mddev *mddev) { struct r5conf *conf = mddev->private; int i; @@ -7864,15 +7865,15 @@ static struct md_personality raid6_personality = .name = "raid6", .level = 6, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = raid5_make_request, + .run = raid5_run, .free = raid5_free, - .status = status, - .error_handler = error, + .status = raid5_status, + .error_handler = raid5_error, .hot_add_disk = raid5_add_disk, .hot_remove_disk= raid5_remove_disk, .spare_active = raid5_spare_active, - .sync_request = sync_request, + .sync_request = raid5_sync_request, .resize = raid5_resize, .size = raid5_size, .check_reshape = raid6_check_reshape, @@ -7887,15 +7888,15 @@ static struct md_personality raid5_personality = .name = "raid5", .level = 5, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = raid5_make_request, + .run = raid5_run, .free = raid5_free, - .status = status, - .error_handler = error, + .status = raid5_status, + .error_handler = raid5_error, .hot_add_disk = raid5_add_disk, .hot_remove_disk= raid5_remove_disk, .spare_active = raid5_spare_active, - .sync_request = sync_request, + .sync_request = raid5_sync_request, .resize = raid5_resize, .size = raid5_size, .check_reshape = raid5_check_reshape, @@ -7911,15 +7912,15 @@ static struct md_personality raid4_personality = .name = "raid4", .level = 4, .owner = THIS_MODULE, - .make_request = make_request, - .run = run, + .make_request = raid5_make_request, + .run = raid5_run, .free = raid5_free, - .status = status, - .error_handler = error, + .status = raid5_status, + .error_handler = raid5_error, .hot_add_disk = raid5_add_disk, .hot_remove_disk= raid5_remove_disk, .spare_active = raid5_spare_active, - .sync_request = sync_request, + .sync_request = raid5_sync_request, .resize = raid5_resize, .size = raid5_size, .check_reshape = raid5_check_reshape, -- cgit v1.2.3 From 81e8f2e930fe76b9814c71b9d87c30760b5eb705 Mon Sep 17 00:00:00 2001 From: Manfred Rudigier Date: Wed, 20 Jan 2016 11:22:28 +0100 Subject: net: dp83640: Fix tx timestamp overflow handling. PHY status frames are not reliable, the PHY may not be able to send them during heavy receive traffic. This overflow condition is signaled by the PHY in the next status frame, but the driver did not make use of it. Instead it always reported wrong tx timestamps to user space after an overflow happened because it assigned newly received tx timestamps to old packets in the queue. This commit fixes this issue by clearing the tx timestamp queue every time an overflow happens, so that no timestamps are delivered for overflow packets. This way time stamping will continue correctly after an overflow. Signed-off-by: Manfred Rudigier Acked-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/net/phy/dp83640.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers') diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index 180f69952779..7a240fce3a7e 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -846,6 +846,11 @@ static void decode_rxts(struct dp83640_private *dp83640, struct skb_shared_hwtstamps *shhwtstamps = NULL; struct sk_buff *skb; unsigned long flags; + u8 overflow; + + overflow = (phy_rxts->ns_hi >> 14) & 0x3; + if (overflow) + pr_debug("rx timestamp queue overflow, count %d\n", overflow); spin_lock_irqsave(&dp83640->rx_lock, flags); @@ -888,6 +893,7 @@ static void decode_txts(struct dp83640_private *dp83640, struct skb_shared_hwtstamps shhwtstamps; struct sk_buff *skb; u64 ns; + u8 overflow; /* We must already have the skb that triggered this. */ @@ -897,6 +903,17 @@ static void decode_txts(struct dp83640_private *dp83640, pr_debug("have timestamp but tx_queue empty\n"); return; } + + overflow = (phy_txts->ns_hi >> 14) & 0x3; + if (overflow) { + pr_debug("tx timestamp queue overflow, count %d\n", overflow); + while (skb) { + skb_complete_tx_timestamp(skb, NULL); + skb = skb_dequeue(&dp83640->tx_queue); + } + return; + } + ns = phy2txts(phy_txts); memset(&shhwtstamps, 0, sizeof(shhwtstamps)); shhwtstamps.hwtstamp = ns_to_ktime(ns); -- cgit v1.2.3 From ceb6560a4cf3a2667209e6869f4fb8f6da6ef55f Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Thu, 21 Jan 2016 10:42:31 +0530 Subject: net/irda: bfin_sir: remove duplicate defines The defconfig build of blackfin is failing with the error: arch/blackfin/include/asm/bfin_serial.h:269:0: warning: "port_membase" redefined drivers/net/irda/bfin_sir.h:85:0: note: this is the location of the previous definition arch/blackfin/include/asm/bfin_serial.h:382:0: warning: "get_lsr_cache" redefined drivers/net/irda/bfin_sir.h:86:0: note: this is the location of the previous definition arch/blackfin/include/asm/bfin_serial.h:383:0: warning: "put_lsr_cache" redefined drivers/net/irda/bfin_sir.h:87:0: note: this is the location of the previous definition port_membase, get_lsr_cache, put_lsr_cache are already defined in the architecture files, no need to define them again in the driver. Signed-off-by: Sudip Mukherjee Signed-off-by: David S. Miller --- drivers/net/irda/bfin_sir.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/irda/bfin_sir.h b/drivers/net/irda/bfin_sir.h index 29cbde8501ed..d47cf14bb4a5 100644 --- a/drivers/net/irda/bfin_sir.h +++ b/drivers/net/irda/bfin_sir.h @@ -82,9 +82,6 @@ struct bfin_sir_self { #define DRIVER_NAME "bfin_sir" -#define port_membase(port) (((struct bfin_sir_port *)(port))->membase) -#define get_lsr_cache(port) (((struct bfin_sir_port *)(port))->lsr) -#define put_lsr_cache(port, v) (((struct bfin_sir_port *)(port))->lsr = (v)) #include static const unsigned short per[][4] = { -- cgit v1.2.3 From d5c3d84657db57bd23ecd58b97f1c99dd42a7b80 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 18 Jan 2016 19:33:06 -0800 Subject: net: phy: Avoid polling PHY with PHY_IGNORE_INTERRUPTS Commit 2c7b49212a86 ("phy: fix the use of PHY_IGNORE_INTERRUPT") changed a hunk in phy_state_machine() in the PHY_RUNNING case which was not needed. The change essentially makes the PHY library treat PHY devices with PHY_IGNORE_INTERRUPT to keep polling for the PHY device, even though the intent is not to do it. Fix this by reverting that specific hunk, which makes the PHY state machine wait for state changes, and stay in the PHY_RUNNING state for as long as needed. Fixes: 2c7b49212a86 ("phy: fix the use of PHY_IGNORE_INTERRUPT") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/phy.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8763bb20988a..42b4c1eb7a90 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -905,10 +905,10 @@ void phy_state_machine(struct work_struct *work) phydev->adjust_link(phydev->attached_dev); break; case PHY_RUNNING: - /* Only register a CHANGE if we are polling or ignoring - * interrupts and link changed since latest checking. + /* Only register a CHANGE if we are polling and link changed + * since latest checking. */ - if (!phy_interrupt_is_valid(phydev)) { + if (phydev->irq == PHY_POLL) { old_link = phydev->link; err = phy_read_status(phydev); if (err) @@ -1000,8 +1000,13 @@ void phy_state_machine(struct work_struct *work) phy_state_to_str(old_state), phy_state_to_str(phydev->state)); - queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, - PHY_STATE_TIME * HZ); + /* Only re-schedule a PHY state machine change if we are polling the + * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving + * between states from phy_mac_interrupt() + */ + if (phydev->irq == PHY_POLL) + queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, + PHY_STATE_TIME * HZ); } void phy_mac_interrupt(struct phy_device *phydev, int new_link) -- cgit v1.2.3 From deccd16f91f930af8e91ffbbfc839d0ad8da999d Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 18 Jan 2016 19:33:07 -0800 Subject: net: phy: Fix phy_mac_interrupt() Commit 5ea94e7686a3 ("phy: add phy_mac_interrupt()") to use with PHY_IGNORE_INTERRUPT added a cancel_work_sync() into phy_mac_interrupt() which is allowed to sleep, whereas phy_mac_interrupt() is expected to be callable from interrupt context. Now that we have fixed how the PHY state machine treats PHY_IGNORE_INTERRUPT with respect to state changes, we can just set the new link state, and queue the PHY state machine for execution so it is going to read the new link state. For that to work properly, we need to update phy_change() not to try to invoke any interrupt callbacks if we have configured the PHY device for PHY_IGNORE_INTERRUPT, because that PHY device and its driver are not required to implement those. Fixes: 5ea94e7686a3 ("phy: add phy_mac_interrupt() to use with PHY_IGNORE_INTERRUPT") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/phy.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 42b4c1eb7a90..5590b9c182c9 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -692,25 +692,29 @@ void phy_change(struct work_struct *work) struct phy_device *phydev = container_of(work, struct phy_device, phy_queue); - if (phydev->drv->did_interrupt && - !phydev->drv->did_interrupt(phydev)) - goto ignore; + if (phy_interrupt_is_valid(phydev)) { + if (phydev->drv->did_interrupt && + !phydev->drv->did_interrupt(phydev)) + goto ignore; - if (phy_disable_interrupts(phydev)) - goto phy_err; + if (phy_disable_interrupts(phydev)) + goto phy_err; + } mutex_lock(&phydev->lock); if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) phydev->state = PHY_CHANGELINK; mutex_unlock(&phydev->lock); - atomic_dec(&phydev->irq_disable); - enable_irq(phydev->irq); + if (phy_interrupt_is_valid(phydev)) { + atomic_dec(&phydev->irq_disable); + enable_irq(phydev->irq); - /* Reenable interrupts */ - if (PHY_HALTED != phydev->state && - phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) - goto irq_enable_err; + /* Reenable interrupts */ + if (PHY_HALTED != phydev->state && + phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) + goto irq_enable_err; + } /* reschedule state queue work to run as soon as possible */ cancel_delayed_work_sync(&phydev->state_queue); @@ -1011,9 +1015,10 @@ void phy_state_machine(struct work_struct *work) void phy_mac_interrupt(struct phy_device *phydev, int new_link) { - cancel_work_sync(&phydev->phy_queue); phydev->link = new_link; - schedule_work(&phydev->phy_queue); + + /* Trigger a state machine change */ + queue_work(system_power_efficient_wq, &phydev->phy_queue); } EXPORT_SYMBOL(phy_mac_interrupt); -- cgit v1.2.3 From 49f7a471e4d172fc80140beccf6b3409b117b130 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 18 Jan 2016 19:33:08 -0800 Subject: net: bcmgenet: Properly configure PHY to ignore interrupt By the time we execute bcmgenet_mii_probe(), the MDIO bus structure has long been allocated and registered. Overirring the PHY interrupt using the MDIO bus structure has no chance to work anymore, because of_mdiobus_register() has call phy_device_create() for use, which copied the MDIO bus address's irq for the PHY into the PHY device "irq" member. Since we do have a proper reference to a PHY device in bcmgenet_mii_probe(), just assign the desired IRQ value here. Fixes: aa09677cba42 ("net: bcmgenet: add MDIO routines") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/genet/bcmmii.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 0d775964b060..457c3bc8cfff 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -401,7 +401,7 @@ int bcmgenet_mii_probe(struct net_device *dev) * Ethernet MAC ISRs */ if (priv->internal_phy) - priv->mii_bus->irq[phydev->mdio.addr] = PHY_IGNORE_INTERRUPT; + priv->phydev->irq = PHY_IGNORE_INTERRUPT; return 0; } -- cgit v1.2.3 From 35e2d1152b22eae99c961affbe85374bef05a775 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Wed, 20 Jan 2016 16:22:47 -0800 Subject: tunnels: Allow IPv6 UDP checksums to be correctly controlled. When configuring checksums on UDP tunnels, the flags are different for IPv4 vs. IPv6 (and reversed). However, when lightweight tunnels are enabled the flags used are always the IPv4 versions, which are ignored in the IPv6 code paths. This uses the correct IPv6 flags, so checksums can be controlled appropriately. Fixes: a725e514 ("vxlan: metadata based tunneling for IPv6") Fixes: abe492b4 ("geneve: UDP checksum configuration via netlink") Signed-off-by: Jesse Gross Acked-by: Jiri Benc Signed-off-by: David S. Miller --- drivers/net/geneve.c | 4 ++-- drivers/net/vxlan.c | 23 ++++++++++++++++------- 2 files changed, 18 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 7456569f53c1..0b14ac3b8d11 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -980,9 +980,9 @@ static netdev_tx_t geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev, opts = ip_tunnel_info_opts(info); if (key->tun_flags & TUNNEL_CSUM) - flags |= GENEVE_F_UDP_CSUM; + flags &= ~GENEVE_F_UDP_ZERO_CSUM6_TX; else - flags &= ~GENEVE_F_UDP_CSUM; + flags |= GENEVE_F_UDP_ZERO_CSUM6_TX; err = geneve6_build_skb(dst, skb, key->tun_flags, vni, info->options_len, opts, diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 2d88c799d2ac..a85b1fcb3130 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1985,11 +1985,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, vxlan->cfg.port_max, true); if (info) { - if (info->key.tun_flags & TUNNEL_CSUM) - flags |= VXLAN_F_UDP_CSUM; - else - flags &= ~VXLAN_F_UDP_CSUM; - ttl = info->key.ttl; tos = info->key.tos; @@ -2004,8 +1999,15 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, goto drop; sk = vxlan->vn4_sock->sock->sk; - if (info && (info->key.tun_flags & TUNNEL_DONT_FRAGMENT)) - df = htons(IP_DF); + if (info) { + if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT) + df = htons(IP_DF); + + if (info->key.tun_flags & TUNNEL_CSUM) + flags |= VXLAN_F_UDP_CSUM; + else + flags &= ~VXLAN_F_UDP_CSUM; + } memset(&fl4, 0, sizeof(fl4)); fl4.flowi4_oif = rdst ? rdst->remote_ifindex : 0; @@ -2101,6 +2103,13 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, return; } + if (info) { + if (info->key.tun_flags & TUNNEL_CSUM) + flags &= ~VXLAN_F_UDP_ZERO_CSUM6_TX; + else + flags |= VXLAN_F_UDP_ZERO_CSUM6_TX; + } + ttl = ttl ? : ip6_dst_hoplimit(ndst); err = vxlan6_xmit_skb(ndst, sk, skb, dev, &saddr, &dst->sin6.sin6_addr, 0, ttl, src_port, dst_port, htonl(vni << 8), md, -- cgit v1.2.3 From 48189d6aaf1ed1b382666289a94a50e5269a8946 Mon Sep 17 00:00:00 2001 From: yankejian Date: Wed, 20 Jan 2016 16:00:19 +0800 Subject: net: hns: enet specifies a reference to dsaf This patch replace the assoication between dsaf and enet from string matching to object reference. It requires the DTS to be updated within BIOS. Thanks god it can be done for all released boards. Signed-off-by: Kejian Yan Acked-by: Rob Herring Acked-by: Yisen Zhuang Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns/hnae.c | 17 +++++++---------- drivers/net/ethernet/hisilicon/hns/hnae.h | 7 +++++-- drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 4 ++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 10 +--------- drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h | 1 + drivers/net/ethernet/hisilicon/hns/hns_enet.c | 15 +++++++++------ drivers/net/ethernet/hisilicon/hns/hns_enet.h | 2 +- 7 files changed, 28 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.c b/drivers/net/ethernet/hisilicon/hns/hnae.c index b3645297477e..3bfe36f9405b 100644 --- a/drivers/net/ethernet/hisilicon/hns/hnae.c +++ b/drivers/net/ethernet/hisilicon/hns/hnae.c @@ -95,21 +95,17 @@ static struct hnae_buf_ops hnae_bops = { static int __ae_match(struct device *dev, const void *data) { struct hnae_ae_dev *hdev = cls_to_ae_dev(dev); - const char *ae_id = data; - if (!strncmp(ae_id, hdev->name, AE_NAME_SIZE)) - return 1; - - return 0; + return hdev->dev->of_node == data; } -static struct hnae_ae_dev *find_ae(const char *ae_id) +static struct hnae_ae_dev *find_ae(const struct device_node *ae_node) { struct device *dev; - WARN_ON(!ae_id); + WARN_ON(!ae_node); - dev = class_find_device(hnae_class, NULL, ae_id, __ae_match); + dev = class_find_device(hnae_class, NULL, ae_node, __ae_match); return dev ? cls_to_ae_dev(dev) : NULL; } @@ -316,7 +312,8 @@ EXPORT_SYMBOL(hnae_reinit_handle); * return handle ptr or ERR_PTR */ struct hnae_handle *hnae_get_handle(struct device *owner_dev, - const char *ae_id, u32 port_id, + const struct device_node *ae_node, + u32 port_id, struct hnae_buf_ops *bops) { struct hnae_ae_dev *dev; @@ -324,7 +321,7 @@ struct hnae_handle *hnae_get_handle(struct device *owner_dev, int i, j; int ret; - dev = find_ae(ae_id); + dev = find_ae(ae_node); if (!dev) return ERR_PTR(-ENODEV); diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h index 6ca94dc3dda3..1cbcb9fa3fb5 100644 --- a/drivers/net/ethernet/hisilicon/hns/hnae.h +++ b/drivers/net/ethernet/hisilicon/hns/hnae.h @@ -524,8 +524,11 @@ struct hnae_handle { #define ring_to_dev(ring) ((ring)->q->dev->dev) -struct hnae_handle *hnae_get_handle(struct device *owner_dev, const char *ae_id, - u32 port_id, struct hnae_buf_ops *bops); +struct hnae_handle *hnae_get_handle(struct device *owner_dev, + const struct device_node *ae_node, + u32 port_id, + struct hnae_buf_ops *bops); + void hnae_put_handle(struct hnae_handle *handle); int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner); void hnae_ae_unregister(struct hnae_ae_dev *dev); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c index 522b264866b4..a0070d0e740d 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c @@ -847,6 +847,7 @@ static struct hnae_ae_ops hns_dsaf_ops = { int hns_dsaf_ae_init(struct dsaf_device *dsaf_dev) { struct hnae_ae_dev *ae_dev = &dsaf_dev->ae_dev; + static atomic_t id = ATOMIC_INIT(-1); switch (dsaf_dev->dsaf_ver) { case AE_VERSION_1: @@ -858,6 +859,9 @@ int hns_dsaf_ae_init(struct dsaf_device *dsaf_dev) default: break; } + + snprintf(ae_dev->name, AE_NAME_SIZE, "%s%d", DSAF_DEVICE_NAME, + (int)atomic_inc_return(&id)); ae_dev->ops = &hns_dsaf_ops; ae_dev->dev = dsaf_dev->dev; diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c index 1c33bd06bd5c..9439f04962e1 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c @@ -35,7 +35,7 @@ int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev) int ret, i; u32 desc_num; u32 buf_size; - const char *name, *mode_str; + const char *mode_str; struct device_node *np = dsaf_dev->dev->of_node; if (of_device_is_compatible(np, "hisilicon,hns-dsaf-v1")) @@ -43,14 +43,6 @@ int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev) else dsaf_dev->dsaf_ver = AE_VERSION_2; - ret = of_property_read_string(np, "dsa_name", &name); - if (ret) { - dev_err(dsaf_dev->dev, "get dsaf name fail, ret=%d!\n", ret); - return ret; - } - strncpy(dsaf_dev->ae_dev.name, name, AE_NAME_SIZE); - dsaf_dev->ae_dev.name[AE_NAME_SIZE - 1] = '\0'; - ret = of_property_read_string(np, "mode", &mode_str); if (ret) { dev_err(dsaf_dev->dev, "get dsaf mode fail, ret=%d!\n", ret); diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h index 31c312f9826e..40205b910f80 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h @@ -18,6 +18,7 @@ struct hns_mac_cb; #define DSAF_DRV_NAME "hns_dsaf" #define DSAF_MOD_VERSION "v1.0" +#define DSAF_DEVICE_NAME "dsaf" #define HNS_DSAF_DEBUG_NW_REG_OFFSET 0x100000 diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index 0e30846a24f8..3f77ff77abbc 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -1802,7 +1802,7 @@ static int hns_nic_try_get_ae(struct net_device *ndev) int ret; h = hnae_get_handle(&priv->netdev->dev, - priv->ae_name, priv->port_id, NULL); + priv->ae_node, priv->port_id, NULL); if (IS_ERR_OR_NULL(h)) { ret = PTR_ERR(h); dev_dbg(priv->dev, "has not handle, register notifier!\n"); @@ -1880,13 +1880,16 @@ static int hns_nic_dev_probe(struct platform_device *pdev) else priv->enet_ver = AE_VERSION_2; - ret = of_property_read_string(node, "ae-name", &priv->ae_name); - if (ret) - goto out_read_string_fail; + priv->ae_node = (void *)of_parse_phandle(node, "ae-handle", 0); + if (IS_ERR_OR_NULL(priv->ae_node)) { + ret = PTR_ERR(priv->ae_node); + dev_err(dev, "not find ae-handle\n"); + goto out_read_prop_fail; + } ret = of_property_read_u32(node, "port-id", &priv->port_id); if (ret) - goto out_read_string_fail; + goto out_read_prop_fail; hns_init_mac_addr(ndev); @@ -1945,7 +1948,7 @@ static int hns_nic_dev_probe(struct platform_device *pdev) out_notify_fail: (void)cancel_work_sync(&priv->service_task); -out_read_string_fail: +out_read_prop_fail: free_netdev(ndev); return ret; } diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.h b/drivers/net/ethernet/hisilicon/hns/hns_enet.h index 4b75270f014e..c68ab3d34fc2 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.h @@ -51,7 +51,7 @@ struct hns_nic_ops { }; struct hns_nic_priv { - const char *ae_name; + const struct device_node *ae_node; u32 enet_ver; u32 port_id; int phy_mode; -- cgit v1.2.3 From 2c832293e09be2f998ea916650927c8ccd5b4b3b Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Wed, 20 Jan 2016 16:36:25 +0800 Subject: net: mvneta: fix trivial cut-off issue in mvneta_ethtool_update_stats When s->type is T_REG_64, the high 32bits are lost in val. This patch fixes this trivial issue. Signed-off-by: Jisheng Zhang Fixes: 9b0cdefa4cd5 ("net: mvneta: add ethtool statistics") Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index fabc8df40392..4a8ed5bc3140 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -3242,26 +3242,25 @@ static void mvneta_ethtool_update_stats(struct mvneta_port *pp) const struct mvneta_statistic *s; void __iomem *base = pp->base; u32 high, low, val; + u64 val64; int i; for (i = 0, s = mvneta_statistics; s < mvneta_statistics + ARRAY_SIZE(mvneta_statistics); s++, i++) { - val = 0; - switch (s->type) { case T_REG_32: val = readl_relaxed(base + s->offset); + pp->ethtool_stats[i] += val; break; case T_REG_64: /* Docs say to read low 32-bit then high */ low = readl_relaxed(base + s->offset); high = readl_relaxed(base + s->offset + 4); - val = (u64)high << 32 | low; + val64 = (u64)high << 32 | low; + pp->ethtool_stats[i] += val64; break; } - - pp->ethtool_stats[i] += val; } } -- cgit v1.2.3 From 0e03f563a04207cc8e5db6afe63309a585995de7 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Wed, 20 Jan 2016 19:27:22 +0800 Subject: net: mvneta: sort the headers in alphabetic order Sorting the headers in alphabetic order will help to reduce the conflict when adding new headers in the future. Signed-off-by: Jisheng Zhang Acked-by: Thomas Petazzoni Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 4a8ed5bc3140..07d837dc39de 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -11,28 +11,28 @@ * warranty of any kind, whether express or implied. */ -#include -#include +#include +#include #include -#include -#include +#include #include -#include -#include #include -#include -#include -#include #include -#include +#include +#include +#include +#include #include +#include #include #include #include -#include #include -#include -#include +#include +#include +#include +#include +#include /* Registers */ #define MVNETA_RXQ_CONFIG_REG(q) (0x1400 + ((q) << 2)) -- cgit v1.2.3 From 2804ba4edef5b4de01d4c580eb9ab4000f822a53 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Wed, 20 Jan 2016 19:27:23 +0800 Subject: net: mvneta: Try to get named core clock first Some platforms may provide more than one clk for the mvneta IP, for example Marvell BG4CT provides one clk for the mac core, and one clk for the AXI bus logic. To support for more than one clock, we'll need to distinguish between the clock by name. Change clock probing to first try to get "core" clock before falling back to unnamed clock. Signed-off-by: Jisheng Zhang Acked-by: Thomas Petazzoni Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 07d837dc39de..406705580a33 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -3604,7 +3604,9 @@ static int mvneta_probe(struct platform_device *pdev) pp->indir[0] = rxq_def; - pp->clk = devm_clk_get(&pdev->dev, NULL); + pp->clk = devm_clk_get(&pdev->dev, "core"); + if (IS_ERR(pp->clk)) + pp->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(pp->clk)) { err = PTR_ERR(pp->clk); goto err_put_phy_node; -- cgit v1.2.3 From 15cc4a4a99ebfbbb696e85dca30680b522811a44 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Wed, 20 Jan 2016 19:27:24 +0800 Subject: net: mvneta: get optional bus clk Some platforms may provide more than one clk for the mvneta IP, for example Marvell BG4CT provides one clk for the mac core, and one clk for the AXI bus logic. Obviously this bus clk also need to be enabled. This patch adds this optional "bus" clk support. Signed-off-by: Jisheng Zhang Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 406705580a33..662c2ee268c7 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -373,6 +373,8 @@ struct mvneta_port { /* Core clock */ struct clk *clk; + /* AXI clock */ + struct clk *clk_bus; u8 mcast_count[256]; u16 tx_ring_size; u16 rx_ring_size; @@ -3614,6 +3616,10 @@ static int mvneta_probe(struct platform_device *pdev) clk_prepare_enable(pp->clk); + pp->clk_bus = devm_clk_get(&pdev->dev, "bus"); + if (!IS_ERR(pp->clk_bus)) + clk_prepare_enable(pp->clk_bus); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); pp->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(pp->base)) { @@ -3725,6 +3731,7 @@ err_free_stats: err_free_ports: free_percpu(pp->ports); err_clk: + clk_disable_unprepare(pp->clk_bus); clk_disable_unprepare(pp->clk); err_put_phy_node: of_node_put(phy_node); @@ -3742,6 +3749,7 @@ static int mvneta_remove(struct platform_device *pdev) struct mvneta_port *pp = netdev_priv(dev); unregister_netdev(dev); + clk_disable_unprepare(pp->clk_bus); clk_disable_unprepare(pp->clk); free_percpu(pp->ports); free_percpu(pp->stats); -- cgit v1.2.3 From 0a9c453eef65fed569757e21423400cfcd55e206 Mon Sep 17 00:00:00 2001 From: Teresa Remmet Date: Wed, 20 Jan 2016 13:40:35 +0100 Subject: net: phy: smsc: Fix disabling energy detect mode When the lan87xx_read_status function is getting called the energy detect mode is enabled again even if it has been disabled by device tree. Added private struct to check the energy detect status. Signed-off-by: Teresa Remmet Signed-off-by: David S. Miller --- drivers/net/phy/smsc.c | 54 ++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 44 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index e485f2653c82..2e21e9366f76 100644 --- a/drivers/net/phy/smsc.c +++ b/drivers/net/phy/smsc.c @@ -24,6 +24,10 @@ #include #include +struct smsc_phy_priv { + bool energy_enable; +}; + static int smsc_phy_config_intr(struct phy_device *phydev) { int rc = phy_write (phydev, MII_LAN83C185_IM, @@ -43,19 +47,14 @@ static int smsc_phy_ack_interrupt(struct phy_device *phydev) static int smsc_phy_config_init(struct phy_device *phydev) { - int __maybe_unused len; - struct device *dev __maybe_unused = &phydev->mdio.dev; - struct device_node *of_node __maybe_unused = dev->of_node; + struct smsc_phy_priv *priv = phydev->priv; + int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); - int enable_energy = 1; if (rc < 0) return rc; - if (of_find_property(of_node, "smsc,disable-energy-detect", &len)) - enable_energy = 0; - - if (enable_energy) { + if (priv->energy_enable) { /* Enable energy detect mode for this SMSC Transceivers */ rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, rc | MII_LAN83C185_EDPWRDOWN); @@ -110,10 +109,13 @@ static int lan911x_config_init(struct phy_device *phydev) */ static int lan87xx_read_status(struct phy_device *phydev) { + struct smsc_phy_priv *priv = phydev->priv; + int err = genphy_read_status(phydev); - int i; - if (!phydev->link) { + if (!phydev->link && priv->energy_enable) { + int i; + /* Disable EDPD to wake up PHY */ int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); if (rc < 0) @@ -149,6 +151,26 @@ static int lan87xx_read_status(struct phy_device *phydev) return err; } +static int smsc_phy_probe(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + struct device_node *of_node = dev->of_node; + struct smsc_phy_priv *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->energy_enable = true; + + if (of_property_read_bool(of_node, "smsc,disable-energy-detect")) + priv->energy_enable = false; + + phydev->priv = priv; + + return 0; +} + static struct phy_driver smsc_phy_driver[] = { { .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */ @@ -159,6 +181,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, @@ -180,6 +204,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, @@ -201,6 +227,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = lan87xx_read_status, @@ -222,6 +250,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, @@ -242,6 +272,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = lan87xx_read_status, @@ -263,6 +295,8 @@ static struct phy_driver smsc_phy_driver[] = { | SUPPORTED_Asym_Pause), .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, + .probe = smsc_phy_probe, + /* basic functions */ .config_aneg = genphy_config_aneg, .read_status = lan87xx_read_status, -- cgit v1.2.3 From 7b08c67fa5ae66c2d07fd506de57de67b7a7e5d6 Mon Sep 17 00:00:00 2001 From: Oren Givon Date: Thu, 21 Jan 2016 11:18:34 +0200 Subject: iwlwifi: add new 3168 series devices support Add new sub-system PCI IDs to the 3168 series. Added 0x2010, 0x2050 and 0x2150 sub-system IDs. Signed-off-by: Oren Givon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index 6261a68cae90..944e88ab13a8 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -378,7 +378,10 @@ static const struct pci_device_id iwl_hw_card_ids[] = { {IWL_PCI_DEVICE(0x3165, 0x8110, iwl3165_2ac_cfg)}, /* 3168 Series */ + {IWL_PCI_DEVICE(0x24FB, 0x2010, iwl3168_2ac_cfg)}, {IWL_PCI_DEVICE(0x24FB, 0x2110, iwl3168_2ac_cfg)}, + {IWL_PCI_DEVICE(0x24FB, 0x2050, iwl3168_2ac_cfg)}, + {IWL_PCI_DEVICE(0x24FB, 0x2150, iwl3168_2ac_cfg)}, {IWL_PCI_DEVICE(0x24FB, 0x0000, iwl3168_2ac_cfg)}, /* 7265 Series */ -- cgit v1.2.3 From 9baa03982b06a62ac817b4983f2da7ca66d4f331 Mon Sep 17 00:00:00 2001 From: Oren Givon Date: Thu, 21 Jan 2016 11:11:11 +0200 Subject: iwlwifi: add device ID for 8265 Signed-off-by: Oren Givon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index 944e88ab13a8..00335ea6b3eb 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -478,6 +478,7 @@ static const struct pci_device_id iwl_hw_card_ids[] = { {IWL_PCI_DEVICE(0x24F3, 0x0000, iwl8265_2ac_cfg)}, {IWL_PCI_DEVICE(0x24FD, 0x0010, iwl8265_2ac_cfg)}, {IWL_PCI_DEVICE(0x24FD, 0x8010, iwl8265_2ac_cfg)}, + {IWL_PCI_DEVICE(0x24FD, 0x0810, iwl8265_2ac_cfg)}, /* 9000 Series */ {IWL_PCI_DEVICE(0x9DF0, 0x2A10, iwl5165_2ac_cfg)}, -- cgit v1.2.3 From 4ac7a65f8070098187b1e2afa992848366aae079 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 22 Jan 2016 15:54:42 -0800 Subject: md-cluster: fix missing memory free There are several places we allocate dlm_lock_resource, but not free it. leave() need free a lock resource too (from Guoqing) Cc: Goldwyn Rodrigues Cc: Guoqing Jiang Cc: NeilBrown Signed-off-by: Shaohua Li --- drivers/md/md-cluster.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 0ded8e97751d..dd97d4245822 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -293,6 +293,7 @@ static void recover_bitmaps(struct md_thread *thread) dlm_unlock: dlm_unlock_sync(bm_lockres); clear_bit: + lockres_free(bm_lockres); clear_bit(slot, &cinfo->recovery_map); } } @@ -682,8 +683,10 @@ static int gather_all_resync_info(struct mddev *mddev, int total_slots) bm_lockres = lockres_init(mddev, str, NULL, 1); if (!bm_lockres) return -ENOMEM; - if (i == (cinfo->slot_number - 1)) + if (i == (cinfo->slot_number - 1)) { + lockres_free(bm_lockres); continue; + } bm_lockres->flags |= DLM_LKF_NOQUEUE; ret = dlm_lock_sync(bm_lockres, DLM_LOCK_PW); @@ -858,6 +861,7 @@ static int leave(struct mddev *mddev) lockres_free(cinfo->token_lockres); lockres_free(cinfo->ack_lockres); lockres_free(cinfo->no_new_dev_lockres); + lockres_free(cinfo->resync_lockres); lockres_free(cinfo->bitmap_lockres); unlock_all_bitmaps(mddev); dlm_release_lockspace(cinfo->lockspace, 2); -- cgit v1.2.3 From fc2561ec0afcd89e2ec6f28a82a9219582844964 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 22 Jan 2016 16:40:02 -0800 Subject: md-cluster: delete useless code page->index already considers node offset. The node_offset calculation in write_sb_page is useless and confusion. Cc: Goldwyn Rodrigues Cc: NeilBrown Acked-by: Guoqing Jiang Signed-off-by: Shaohua Li --- drivers/md/bitmap.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers') diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 4f22e919787a..d80cce499a56 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -210,10 +210,6 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait) struct block_device *bdev; struct mddev *mddev = bitmap->mddev; struct bitmap_storage *store = &bitmap->storage; - int node_offset = 0; - - if (mddev_is_clustered(bitmap->mddev)) - node_offset = bitmap->cluster_slot * store->file_pages; while ((rdev = next_active_rdev(rdev, mddev)) != NULL) { int size = PAGE_SIZE; -- cgit v1.2.3 From b5d7a06906a4875524f5c61c0b312828bf6737de Mon Sep 17 00:00:00 2001 From: Iyappan Subramanian Date: Thu, 21 Jan 2016 16:07:41 -0800 Subject: drivers: net: xgene: fix extra IRQ issue For interrupt controller that doesn't support irq_disable and hardware with level interrupt, an extra interrupt may be pending. This patch fixes the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line, as suggested by, 'commit e9849777d0e2 ("genirq: Add flag to force mask in disable_irq[_nosync]()")' Signed-off-by: Iyappan Subramanian Tested-by: Toan Le Signed-off-by: David S. Miller --- drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 12 +++++++++--- drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 + 2 files changed, 10 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index a4799c1fc7d4..5eb9b20c0eea 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -628,6 +628,7 @@ static int xgene_enet_register_irq(struct net_device *ndev) int ret; ring = pdata->rx_ring; + irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq, IRQF_SHARED, ring->irq_name, ring); if (ret) @@ -635,6 +636,7 @@ static int xgene_enet_register_irq(struct net_device *ndev) if (pdata->cq_cnt) { ring = pdata->tx_ring->cp_ring; + irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq, IRQF_SHARED, ring->irq_name, ring); if (ret) { @@ -649,15 +651,19 @@ static int xgene_enet_register_irq(struct net_device *ndev) static void xgene_enet_free_irq(struct net_device *ndev) { struct xgene_enet_pdata *pdata; + struct xgene_enet_desc_ring *ring; struct device *dev; pdata = netdev_priv(ndev); dev = ndev_to_dev(ndev); - devm_free_irq(dev, pdata->rx_ring->irq, pdata->rx_ring); + ring = pdata->rx_ring; + irq_clear_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); + devm_free_irq(dev, ring->irq, ring); if (pdata->cq_cnt) { - devm_free_irq(dev, pdata->tx_ring->cp_ring->irq, - pdata->tx_ring->cp_ring); + ring = pdata->tx_ring->cp_ring; + irq_clear_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); + devm_free_irq(dev, ring->irq, ring); } } diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index 70d5b62c125a..248dfc40a761 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include -- cgit v1.2.3 From 9a368aff9cb370298fa02feeffa861f2db497c18 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Fri, 22 Jan 2016 01:39:43 +0100 Subject: pptp: fix illegal memory access caused by multiple bind()s Several times already this has been reported as kasan reports caused by syzkaller and trinity and people always looked at RCU races, but it is much more simple. :) In case we bind a pptp socket multiple times, we simply add it to the callid_sock list but don't remove the old binding. Thus the old socket stays in the bucket with unused call_id indexes and doesn't get cleaned up. This causes various forms of kasan reports which were hard to pinpoint. Simply don't allow multiple binds and correct error handling in pptp_bind. Also keep sk_state bits in place in pptp_connect. Fixes: 00959ade36acad ("PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)") Cc: Dmitry Kozlov Cc: Sasha Levin Cc: Dmitry Vyukov Reported-by: Dmitry Vyukov Cc: Dave Jones Reported-by: Dave Jones Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- drivers/net/ppp/pptp.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c index 90868ca5e341..ae0905ed4a32 100644 --- a/drivers/net/ppp/pptp.c +++ b/drivers/net/ppp/pptp.c @@ -129,24 +129,27 @@ static int lookup_chan_dst(u16 call_id, __be32 d_addr) return i < MAX_CALLID; } -static int add_chan(struct pppox_sock *sock) +static int add_chan(struct pppox_sock *sock, + struct pptp_addr *sa) { static int call_id; spin_lock(&chan_lock); - if (!sock->proto.pptp.src_addr.call_id) { + if (!sa->call_id) { call_id = find_next_zero_bit(callid_bitmap, MAX_CALLID, call_id + 1); if (call_id == MAX_CALLID) { call_id = find_next_zero_bit(callid_bitmap, MAX_CALLID, 1); if (call_id == MAX_CALLID) goto out_err; } - sock->proto.pptp.src_addr.call_id = call_id; - } else if (test_bit(sock->proto.pptp.src_addr.call_id, callid_bitmap)) + sa->call_id = call_id; + } else if (test_bit(sa->call_id, callid_bitmap)) { goto out_err; + } - set_bit(sock->proto.pptp.src_addr.call_id, callid_bitmap); - rcu_assign_pointer(callid_sock[sock->proto.pptp.src_addr.call_id], sock); + sock->proto.pptp.src_addr = *sa; + set_bit(sa->call_id, callid_bitmap); + rcu_assign_pointer(callid_sock[sa->call_id], sock); spin_unlock(&chan_lock); return 0; @@ -416,7 +419,6 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr, struct sock *sk = sock->sk; struct sockaddr_pppox *sp = (struct sockaddr_pppox *) uservaddr; struct pppox_sock *po = pppox_sk(sk); - struct pptp_opt *opt = &po->proto.pptp; int error = 0; if (sockaddr_len < sizeof(struct sockaddr_pppox)) @@ -424,10 +426,22 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr, lock_sock(sk); - opt->src_addr = sp->sa_addr.pptp; - if (add_chan(po)) + if (sk->sk_state & PPPOX_DEAD) { + error = -EALREADY; + goto out; + } + + if (sk->sk_state & PPPOX_BOUND) { error = -EBUSY; + goto out; + } + + if (add_chan(po, &sp->sa_addr.pptp)) + error = -EBUSY; + else + sk->sk_state |= PPPOX_BOUND; +out: release_sock(sk); return error; } @@ -498,7 +512,7 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr, } opt->dst_addr = sp->sa_addr.pptp; - sk->sk_state = PPPOX_CONNECTED; + sk->sk_state |= PPPOX_CONNECTED; end: release_sock(sk); -- cgit v1.2.3 From 5017e1b15d4ca8dcc170dc6914f6b2d8cd492bdf Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Tue, 19 Jan 2016 11:45:12 -0200 Subject: [media] v4l: vsp1: Fix wrong entities links creation The Media Control framework now requires entities to be registered with the media device before creating links so commit c7621b3044f7 ("[media] v4l: vsp1: separate links creation from entities init") separated link creation from entities init. But unfortunately that patch introduced a regression since wrong links were created causing a boot failure on Renesas boards. This patch fixes the boot issue and also the media graph was compared by Geert Uytterhoeven to make sure that the driver changes required by the Media Control framework next generation did not affect the graph. Reported-by: Geert Uytterhoeven Signed-off-by: Javier Martinez Canillas Tested-by: Geert Uytterhoeven Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_drv.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 42dff9d020af..533bc796391e 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -256,7 +256,7 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) /* Create links. */ list_for_each_entry(entity, &vsp1->entities, list_dev) { - if (entity->type == VSP1_ENTITY_LIF) { + if (entity->type == VSP1_ENTITY_WPF) { ret = vsp1_wpf_create_links(vsp1, entity); if (ret < 0) goto done; @@ -264,7 +264,10 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) ret = vsp1_rpf_create_links(vsp1, entity); if (ret < 0) goto done; - } else { + } + + if (entity->type != VSP1_ENTITY_LIF && + entity->type != VSP1_ENTITY_RPF) { ret = vsp1_create_links(vsp1, entity); if (ret < 0) goto done; -- cgit v1.2.3 From e920ebc2f85848f7c21b2fe27a6ea9e798c63568 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 4 Jan 2016 10:48:24 -0200 Subject: [media] soc_camera: cleanup control device on async_unbind I got the following WARN on a simple unbind/bind cycle: root@Lager:/sys/bus/i2c/drivers/adv7180# echo 6-0020 > unbind root@Lager:/sys/bus/i2c/drivers/adv7180# echo 6-0020 > bind [ 31.097652] adv7180 6-0020: chip found @ 0x20 (e6520000.i2c) [ 31.123744] ------------[ cut here ]------------ [ 31.128413] WARNING: CPU: 3 PID: 873 at drivers/media/platform/soc_camera/soc_camera.c:1463 soc_camera_async_bound+0x40/0xa0() [ 31.139896] CPU: 3 PID: 873 Comm: sh Not tainted 4.4.0-rc3-00062-ge8ae2c0b6bca2a #172 [ 31.147815] Hardware name: Generic R8A7790 (Flattened Device Tree) [ 31.154056] Backtrace: [ 31.156575] [] (dump_backtrace) from [] (show_stack+0x20/0x24) [ 31.164233] r6:c05c5b33 r5:00000009 r4:00000000 r3:00404100 [ 31.170017] [] (show_stack) from [] (dump_stack+0x78/0x94) [ 31.177344] [] (dump_stack) from [] (warn_slowpath_common+0x98/0xc4) [ 31.185518] r4:00000000 r3:00000000 [ 31.189172] [] (warn_slowpath_common) from [] (warn_slowpath_null+0x2c/0x34) [ 31.198043] r8:eb38df28 r7:eb38c5d0 r6:eb38de80 r5:e6962810 r4:eb38de80 [ 31.204898] [] (warn_slowpath_null) from [] (soc_camera_async_bound+0x40/0xa0) [ 31.213955] [] (soc_camera_async_bound) from [] (v4l2_async_test_notify+0x9c/0x108) [ 31.223430] r5:eb38c5ec r4:eb38de80 [ 31.227084] [] (v4l2_async_test_notify) from [] (v4l2_async_register_subdev+0x88/0xd0) [ 31.236822] r7:c07115c8 r6:c071160c r5:eb38c5ec r4:eb38de80 [ 31.242622] [] (v4l2_async_register_subdev) from [] (adv7180_probe+0x2c8/0x3a4) [ 31.251753] r8:00000000 r7:00000001 r6:eb38de80 r5:ea973400 r4:eb38de10 r3:00000000 [ 31.259660] [] (adv7180_probe) from [] (i2c_device_probe+0x1a0/0x1e4) This gets fixed by clearing the control device pointer on async_unbind. Signed-off-by: Wolfram Sang Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/soc_camera/soc_camera.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index cc84c6d6a701..46c7186f7867 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -1493,6 +1493,8 @@ static void soc_camera_async_unbind(struct v4l2_async_notifier *notifier, struct soc_camera_async_client, notifier); struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev); + icd->control = NULL; + if (icd->clk) { v4l2_clk_unregister(icd->clk); icd->clk = NULL; -- cgit v1.2.3 From 9b4b92645c5edf16b9e77c5956e13b040ba5ed0f Mon Sep 17 00:00:00 2001 From: Josh Wu Date: Mon, 30 Nov 2015 07:20:15 -0200 Subject: [media] atmel-isi: fix debug message which only show the first format Correct the debug output message to show correct format. Signed-off-by: Josh Wu Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/soc_camera/atmel-isi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c index c398b285180c..1af779ee3c74 100644 --- a/drivers/media/platform/soc_camera/atmel-isi.c +++ b/drivers/media/platform/soc_camera/atmel-isi.c @@ -795,7 +795,7 @@ static int isi_camera_get_formats(struct soc_camera_device *icd, xlate->host_fmt = &isi_camera_formats[i]; xlate->code = code.code; dev_dbg(icd->parent, "Providing format %s using code %d\n", - isi_camera_formats[0].name, code.code); + xlate->host_fmt->name, xlate->code); } break; default: -- cgit v1.2.3 From 1b4ca5aa9e0867f5cec40f9508dac7414f3b6998 Mon Sep 17 00:00:00 2001 From: Anders Roxell Date: Thu, 14 Jan 2016 22:09:43 -0200 Subject: [media] drivers/media: vsp1_video: fix compile error This was found with the -RT patch enabled, but the fix should apply to non-RT also. Compilation error without this fix: ../drivers/media/platform/vsp1/vsp1_video.c: In function 'vsp1_pipeline_stopped': ../drivers/media/platform/vsp1/vsp1_video.c:524:2: error: expected expression before 'do' spin_unlock_irqrestore(&pipe->irqlock, flags); ^ Signed-off-by: Anders Roxell Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_video.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 637d0d6f79fb..b4dca57d1ae3 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -515,7 +515,7 @@ static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe) bool stopped; spin_lock_irqsave(&pipe->irqlock, flags); - stopped = pipe->state == VSP1_PIPELINE_STOPPED, + stopped = pipe->state == VSP1_PIPELINE_STOPPED; spin_unlock_irqrestore(&pipe->irqlock, flags); return stopped; -- cgit v1.2.3 From 76a563675485849f6f9ad5b30df220438b3628c1 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Tue, 8 Dec 2015 12:15:54 -0200 Subject: [media] exynos4-is: fix a format string bug Ironically, 7d4020c3c400 ("[media] exynos4-is: fix some warnings when compiling on arm64") fixed some format string bugs but introduced a new one. buf_index is a simple int, so it should be printed with %d, not %pad (which is correctly used for dma_addr_t). Fixes: 7d4020c3c400 ("[media] exynos4-is: fix some warnings when compiling on arm64") Signed-off-by: Rasmus Villemoes Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/fimc-isp-video.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index bf9261eb57a1..c0816728cbfe 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -218,8 +218,8 @@ static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) ivb->dma_addr[i]; isp_dbg(2, &video->ve.vdev, - "dma_buf %pad (%d/%d/%d) addr: %pad\n", - &buf_index, ivb->index, i, vb->index, + "dma_buf %d (%d/%d/%d) addr: %pad\n", + buf_index, ivb->index, i, vb->index, &ivb->dma_addr[i]); } -- cgit v1.2.3 From 4e63959e3773276cc49b488238bd583c53cf54e8 Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Mon, 18 Jan 2016 14:10:25 -0200 Subject: [media] s5k6a3: Fix VIDIOC_SUBDEV_G_FMT ioctl for TRY format VIDIOC_SUBDEV_G_FMT ioctl should return TRY format previously set with VIDIOC_SUBDEV_S_FMT. Currently it is not the case as only ACTIVE formats are saved in the driver. Since the driver doesn't alter hardware state in the set_fmt op anyway, the op can save the format in both TRY and ACTIVE case. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/s5k6a3.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c index b9e43ffa5085..cbe4711e9b31 100644 --- a/drivers/media/i2c/s5k6a3.c +++ b/drivers/media/i2c/s5k6a3.c @@ -144,8 +144,7 @@ static int s5k6a3_set_fmt(struct v4l2_subdev *sd, mf = __s5k6a3_get_format(sensor, cfg, fmt->pad, fmt->which); if (mf) { mutex_lock(&sensor->lock); - if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) - *mf = fmt->format; + *mf = fmt->format; mutex_unlock(&sensor->lock); } return 0; -- cgit v1.2.3 From 76775776a6e3dbe2dc8a84345dca4540969bc014 Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Mon, 18 Jan 2016 14:10:26 -0200 Subject: [media] exynos4-is: Open shouldn't fail when sensor entity is not linked In order to allow for automatic media device entities linking from the level of libv4l plugin the open system call shouldn't fail, as the libv4l plugins can begin their job not until it succeeds. This patch allows for leaving the pipeline not linked on open and postpones verifying it to the moment when streamon callback is called. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/media-dev.c | 95 +++++++++++++++++++++------ 1 file changed, 76 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index f3b2dd30ec77..e79ddbb1e14f 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -185,6 +185,37 @@ error: return ret; } +/** + * __fimc_pipeline_enable - enable power of all pipeline subdevs + * and the sensor clock + * @ep: video pipeline structure + * @fmd: fimc media device + * + * Called with the graph mutex held. + */ +static int __fimc_pipeline_enable(struct exynos_media_pipeline *ep, + struct fimc_md *fmd) +{ + struct fimc_pipeline *p = to_fimc_pipeline(ep); + int ret; + + /* Enable PXLASYNC clock if this pipeline includes FIMC-IS */ + if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) { + ret = clk_prepare_enable(fmd->wbclk[CLK_IDX_WB_B]); + if (ret < 0) + return ret; + } + + ret = fimc_pipeline_s_power(p, 1); + if (!ret) + return 0; + + if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) + clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]); + + return ret; +} + /** * __fimc_pipeline_open - update the pipeline information, enable power * of all pipeline subdevs and the sensor clock @@ -199,7 +230,6 @@ static int __fimc_pipeline_open(struct exynos_media_pipeline *ep, struct fimc_md *fmd = entity_to_fimc_mdev(me); struct fimc_pipeline *p = to_fimc_pipeline(ep); struct v4l2_subdev *sd; - int ret; if (WARN_ON(p == NULL || me == NULL)) return -EINVAL; @@ -208,24 +238,16 @@ static int __fimc_pipeline_open(struct exynos_media_pipeline *ep, fimc_pipeline_prepare(p, me); sd = p->subdevs[IDX_SENSOR]; - if (sd == NULL) - return -EINVAL; - - /* Disable PXLASYNC clock if this pipeline includes FIMC-IS */ - if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) { - ret = clk_prepare_enable(fmd->wbclk[CLK_IDX_WB_B]); - if (ret < 0) - return ret; - } - - ret = fimc_pipeline_s_power(p, 1); - if (!ret) + if (sd == NULL) { + pr_warn("%s(): No sensor subdev\n", __func__); + /* + * Pipeline open cannot fail so as to make it possible + * for the user space to configure the pipeline. + */ return 0; + } - if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) - clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]); - - return ret; + return __fimc_pipeline_enable(ep, fmd); } /** @@ -269,10 +291,43 @@ static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on) { IDX_CSIS, IDX_FLITE, IDX_FIMC, IDX_SENSOR, IDX_IS_ISP }, }; struct fimc_pipeline *p = to_fimc_pipeline(ep); + struct fimc_md *fmd = entity_to_fimc_mdev(&p->subdevs[IDX_CSIS]->entity); + enum fimc_subdev_index sd_id; int i, ret = 0; - if (p->subdevs[IDX_SENSOR] == NULL) - return -ENODEV; + if (p->subdevs[IDX_SENSOR] == NULL) { + if (!fmd->user_subdev_api) { + /* + * Sensor must be already discovered if we + * aren't in the user_subdev_api mode + */ + return -ENODEV; + } + + /* Get pipeline sink entity */ + if (p->subdevs[IDX_FIMC]) + sd_id = IDX_FIMC; + else if (p->subdevs[IDX_IS_ISP]) + sd_id = IDX_IS_ISP; + else if (p->subdevs[IDX_FLITE]) + sd_id = IDX_FLITE; + else + return -ENODEV; + + /* + * Sensor could have been linked between open and STREAMON - + * check if this is the case. + */ + fimc_pipeline_prepare(p, &p->subdevs[sd_id]->entity); + + if (p->subdevs[IDX_SENSOR] == NULL) + return -ENODEV; + + ret = __fimc_pipeline_enable(ep, fmd); + if (ret < 0) + return ret; + + } for (i = 0; i < IDX_MAX; i++) { unsigned int idx = seq[on][i]; @@ -282,8 +337,10 @@ static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on) if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) goto error; } + return 0; error: + fimc_pipeline_s_power(p, !on); for (; i >= 0; i--) { unsigned int idx = seq[on][i]; v4l2_subdev_call(p->subdevs[idx], video, s_stream, !on); -- cgit v1.2.3 From a13ddcae4f0bc5e1de761895d0cae2010e1934af Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Mon, 18 Jan 2016 14:10:27 -0200 Subject: [media] exynos4-is: Wait for 100us before opening sensor Some user space use cases result in kernel hangup on the HIC_OPEN_SENSOR command write. In case when a minimalistic application is used for setting up the streaming, the hangups occur only occasionally. In case of GStreamer use cases it is always the case. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/fimc-is.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 49658ca39e51..979c388ebf60 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -631,6 +631,12 @@ static int fimc_is_hw_open_sensor(struct fimc_is *is, fimc_is_mem_barrier(); + /* + * Some user space use cases hang up here without this + * empirically chosen delay. + */ + udelay(100); + mcuctl_write(HIC_OPEN_SENSOR, is, MCUCTL_REG_ISSR(0)); mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1)); mcuctl_write(sensor->drvdata->id, is, MCUCTL_REG_ISSR(2)); -- cgit v1.2.3 From 420520766a796d36076111139ba1e4fb1aadeadd Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Wed, 30 Dec 2015 11:26:03 -0200 Subject: [media] media: Kconfig: add dependency of HAS_DMA The build of m32r allmodconfig fails with the error: drivers/media/v4l2-core/videobuf2-dma-contig.c:484:2: error: implicit declaration of function 'dma_get_cache_alignment' The build of videobuf2-dma-contig.c depends on HAS_DMA and it is correctly mentioned in the Kconfig but the symbol VIDEO_STI_BDISP also selects VIDEOBUF2_DMA_CONTIG, so it is trying to compile videobuf2-dma-contig.c even though HAS_DMA is not defined. Signed-off-by: Sudip Mukherjee Acked-by: Sakari Ailus Acked-by: Geert Uytterhoeven Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 526359447ff9..8b89ebe16d94 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -215,6 +215,7 @@ config VIDEO_SAMSUNG_EXYNOS_GSC config VIDEO_STI_BDISP tristate "STMicroelectronics BDISP 2D blitter driver" depends on VIDEO_DEV && VIDEO_V4L2 + depends on HAS_DMA depends on ARCH_STI || COMPILE_TEST select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV -- cgit v1.2.3 From 262c741e0825b29447a9e53b6582afd6b14c3706 Mon Sep 17 00:00:00 2001 From: Eli Cooper Date: Mon, 18 Jan 2016 19:30:19 +0800 Subject: rt2x00: fix monitor mode regression Since commit df1404650ccb ("mac80211: remove support for IFF_PROMISC") monitor mode for rt2x00 has been made effectively useless because the hardware filter is configured to drop packets whose intended recipient is not the device, regardless of the presence of monitor mode interfaces. This patch fixes this regression by adding explicit monitor mode support, and by configuring the hardware filter accordingly. Signed-off-by: Eli Cooper Acked-by: Stanislaw Gruszka Signed-off-by: Kalle Valo --- drivers/net/wireless/ralink/rt2x00/rt2400pci.c | 4 +++- drivers/net/wireless/ralink/rt2x00/rt2500pci.c | 4 +++- drivers/net/wireless/ralink/rt2x00/rt2500usb.c | 4 +++- drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 3 ++- drivers/net/wireless/ralink/rt2x00/rt2x00.h | 1 + drivers/net/wireless/ralink/rt2x00/rt2x00config.c | 5 +++++ drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | 5 ----- drivers/net/wireless/ralink/rt2x00/rt61pci.c | 4 +++- drivers/net/wireless/ralink/rt2x00/rt73usb.c | 4 +++- 9 files changed, 23 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c index 9a3966cd6fbe..155f343981fe 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c @@ -273,8 +273,10 @@ static void rt2400pci_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field32(®, RXCSR0_DROP_CONTROL, !(filter_flags & FIF_CONTROL)); - rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME, 1); + rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, RXCSR0_DROP_TODS, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field32(®, RXCSR0_DROP_VERSION_ERROR, 1); rt2x00mmio_register_write(rt2x00dev, RXCSR0, reg); diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c index 1a6740b4d396..2553cdd74066 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c @@ -274,8 +274,10 @@ static void rt2500pci_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field32(®, RXCSR0_DROP_CONTROL, !(filter_flags & FIF_CONTROL)); - rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME, 1); + rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, RXCSR0_DROP_TODS, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field32(®, RXCSR0_DROP_VERSION_ERROR, 1); rt2x00_set_field32(®, RXCSR0_DROP_MCAST, diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c index d26018f30b7d..2d64611de300 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c @@ -437,8 +437,10 @@ static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field16(®, TXRX_CSR2_DROP_CONTROL, !(filter_flags & FIF_CONTROL)); - rt2x00_set_field16(®, TXRX_CSR2_DROP_NOT_TO_ME, 1); + rt2x00_set_field16(®, TXRX_CSR2_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field16(®, TXRX_CSR2_DROP_TODS, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field16(®, TXRX_CSR2_DROP_VERSION_ERROR, 1); rt2x00_set_field16(®, TXRX_CSR2_DROP_MULTICAST, diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index 9733b31a780d..a26afcab03ed 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -1490,7 +1490,8 @@ void rt2800_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_FCSFAIL)); rt2x00_set_field32(®, RX_FILTER_CFG_DROP_PHY_ERROR, !(filter_flags & FIF_PLCPFAIL)); - rt2x00_set_field32(®, RX_FILTER_CFG_DROP_NOT_TO_ME, 1); + rt2x00_set_field32(®, RX_FILTER_CFG_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, RX_FILTER_CFG_DROP_NOT_MY_BSSD, 0); rt2x00_set_field32(®, RX_FILTER_CFG_DROP_VER_ERROR, 1); rt2x00_set_field32(®, RX_FILTER_CFG_DROP_MULTICAST, diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index 3282ddb766f4..26427140a963 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -669,6 +669,7 @@ enum rt2x00_state_flags { CONFIG_POWERSAVING, CONFIG_HT_DISABLED, CONFIG_QOS_DISABLED, + CONFIG_MONITORING, /* * Mark we currently are sequentially reading TX_STA_FIFO register diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00config.c b/drivers/net/wireless/ralink/rt2x00/rt2x00config.c index 7e8bb1198ae9..6a1f508d472f 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00config.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00config.c @@ -277,6 +277,11 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, else clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags); + if (conf->flags & IEEE80211_CONF_MONITOR) + set_bit(CONFIG_MONITORING, &rt2x00dev->flags); + else + clear_bit(CONFIG_MONITORING, &rt2x00dev->flags); + rt2x00dev->curr_band = conf->chandef.chan->band; rt2x00dev->curr_freq = conf->chandef.chan->center_freq; rt2x00dev->tx_power = conf->power_level; diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c index 3c26ee65a415..13da95a24cf7 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c @@ -385,11 +385,6 @@ void rt2x00mac_configure_filter(struct ieee80211_hw *hw, *total_flags |= FIF_PSPOLL; } - /* - * Check if there is any work left for us. - */ - if (rt2x00dev->packet_filter == *total_flags) - return; rt2x00dev->packet_filter = *total_flags; rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); diff --git a/drivers/net/wireless/ralink/rt2x00/rt61pci.c b/drivers/net/wireless/ralink/rt2x00/rt61pci.c index c0e730ea1b69..24a3436ef952 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt61pci.c +++ b/drivers/net/wireless/ralink/rt2x00/rt61pci.c @@ -530,8 +530,10 @@ static void rt61pci_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field32(®, TXRX_CSR0_DROP_CONTROL, !(filter_flags & (FIF_CONTROL | FIF_PSPOLL))); - rt2x00_set_field32(®, TXRX_CSR0_DROP_NOT_TO_ME, 1); + rt2x00_set_field32(®, TXRX_CSR0_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, TXRX_CSR0_DROP_TO_DS, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field32(®, TXRX_CSR0_DROP_VERSION_ERROR, 1); rt2x00_set_field32(®, TXRX_CSR0_DROP_MULTICAST, diff --git a/drivers/net/wireless/ralink/rt2x00/rt73usb.c b/drivers/net/wireless/ralink/rt2x00/rt73usb.c index 7081e13b4fd6..7bbc86931168 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt73usb.c +++ b/drivers/net/wireless/ralink/rt2x00/rt73usb.c @@ -480,8 +480,10 @@ static void rt73usb_config_filter(struct rt2x00_dev *rt2x00dev, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field32(®, TXRX_CSR0_DROP_CONTROL, !(filter_flags & (FIF_CONTROL | FIF_PSPOLL))); - rt2x00_set_field32(®, TXRX_CSR0_DROP_NOT_TO_ME, 1); + rt2x00_set_field32(®, TXRX_CSR0_DROP_NOT_TO_ME, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, TXRX_CSR0_DROP_TO_DS, + !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field32(®, TXRX_CSR0_DROP_VERSION_ERROR, 1); rt2x00_set_field32(®, TXRX_CSR0_DROP_MULTICAST, -- cgit v1.2.3 From c72fc9093718a3f8597249863a1bac345ba00859 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 20 Jan 2016 21:58:39 -0600 Subject: rtlwifi: rtl8821ae: Fix 5G failure when EEPROM is incorrectly encoded Recently, it has been reported that D-Link DWA-582 cards, which use an RTL8812AE chip are not able to scan for 5G networks. The problems started with kernel 4.2, which is the first version that had commit d10101a60372 ("rtlwifi: rtl8821ae: Fix problem with regulatory information"). With this patch, the driver went from setting a default channel plan to using the value derived from EEPROM. Bug reports at https://bugzilla.kernel.org/show_bug.cgi?id=111031 and https://bugzilla.redhat.com/show_bug.cgi?id=1279653 are examples of this problem. The problem was solved once I learned that the internal country code was resulting in a regulatory set with only 2.4 GHz channels. With the RTL8821AE chips available to me, the country code was such that both 2.4 and 5 GHz channels are allowed. The fix is to allow both bands even when the EEPROM is incorrectly encoded. Fixes: d10101a60372 ("rtlwifi: rtl8821ae: Fix problem with regulatory information") Signed-off-by: Larry Finger Cc: littlesmartguy@gmail.com Cc: gabe@codehaus.org Cc: Stable [v4.2+] Signed-off-by: Kalle Valo --- drivers/net/wireless/realtek/rtlwifi/regd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/realtek/rtlwifi/regd.c b/drivers/net/wireless/realtek/rtlwifi/regd.c index a62bf0a65c32..5be34118e0af 100644 --- a/drivers/net/wireless/realtek/rtlwifi/regd.c +++ b/drivers/net/wireless/realtek/rtlwifi/regd.c @@ -351,7 +351,6 @@ static const struct ieee80211_regdomain *_rtl_regdomain_select( case COUNTRY_CODE_SPAIN: case COUNTRY_CODE_FRANCE: case COUNTRY_CODE_ISRAEL: - case COUNTRY_CODE_WORLD_WIDE_13: return &rtl_regdom_12_13; case COUNTRY_CODE_MKK: case COUNTRY_CODE_MKK1: @@ -360,6 +359,7 @@ static const struct ieee80211_regdomain *_rtl_regdomain_select( return &rtl_regdom_14_60_64; case COUNTRY_CODE_GLOBAL_DOMAIN: return &rtl_regdom_14; + case COUNTRY_CODE_WORLD_WIDE_13: case COUNTRY_CODE_WORLD_WIDE_13_5G_ALL: return &rtl_regdom_12_13_5g_all; default: -- cgit v1.2.3 From 65dc1a5d1efb0ec54ffb715468070890d27d63fc Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 21 Jan 2016 16:34:08 +0100 Subject: ath9k_hw: ignore eeprom magic mismatch on flash based devices Many AR913x based devices (maybe others too) do not have a valid EEPROM magic in their calibration data partition. Fixes: 6fa658fd5ab2 ("ath9k: Simplify and fix eeprom endianness swapping") Signed-off-by: Felix Fietkau Acked-by: Martin Blumenstingl Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath9k/eeprom.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath/ath9k/eeprom.c b/drivers/net/wireless/ath/ath9k/eeprom.c index a7afdeee698c..73fb4232f9f2 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom.c +++ b/drivers/net/wireless/ath/ath9k/eeprom.c @@ -150,18 +150,18 @@ int ath9k_hw_nvram_swap_data(struct ath_hw *ah, bool *swap_needed, int size) return -EIO; } - if (magic == AR5416_EEPROM_MAGIC) { - *swap_needed = false; - } else if (swab16(magic) == AR5416_EEPROM_MAGIC) { + *swap_needed = false; + if (swab16(magic) == AR5416_EEPROM_MAGIC) { if (ah->ah_flags & AH_NO_EEP_SWAP) { ath_info(common, "Ignoring endianness difference in EEPROM magic bytes.\n"); - - *swap_needed = false; } else { *swap_needed = true; } - } else { + } else if (magic != AR5416_EEPROM_MAGIC) { + if (ath9k_hw_use_flash(ah)) + return 0; + ath_err(common, "Invalid EEPROM Magic (0x%04x).\n", magic); return -EINVAL; -- cgit v1.2.3 From e7a7104e432c0db8469ca3568daf4f1d1afe3e73 Mon Sep 17 00:00:00 2001 From: Horia Geant? Date: Tue, 12 Jan 2016 17:59:29 +0200 Subject: crypto: caam - make write transactions bufferable on PPC platforms Previous change (see "Fixes" tag) to the MCFGR register clears AWCACHE[0] ("bufferable" AXI3 attribute) (which is "1" at POR). This makes all writes non-bufferable, causing a ~ 5% performance drop for PPC-based platforms. Rework previous change such that MCFGR[AWCACHE]=4'b0011 (bufferable + cacheable) for all platforms. Note: For ARM-based platforms, AWCACHE[0] is ignored by the interconnect IP. Cc: # 4.3+ Fixes: f10967495144 ("crypto: caam - fix snooping for write transactions") Signed-off-by: Horia Geant? Signed-off-by: Herbert Xu --- drivers/crypto/caam/ctrl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 8abb4bc548cc..69d4a1326fee 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -534,8 +534,8 @@ static int caam_probe(struct platform_device *pdev) * long pointers in master configuration register */ clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK, MCFGR_AWCACHE_CACH | - MCFGR_WDENABLE | (sizeof(dma_addr_t) == sizeof(u64) ? - MCFGR_LONG_PTR : 0)); + MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | + (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); /* * Read the Compile Time paramters and SCFGR to determine -- cgit v1.2.3 From a63abe389d56f6f7b1541c2084b453c9dfdb89dc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 4 Dec 2015 20:20:09 -0200 Subject: [media] exynos4-is: make VIDEO_SAMSUNG_EXYNOS4_IS tristate With CONFIG_V4L2=m and VIDEO_SAMSUNG_EXYNOS4_IS=y, we can select the individual drivers as built-in code when that should not be possible: drivers/built-in.o: In function `s5pcsis_set_fmt': policy.c:(.text+0x13afdc): undefined reference to `v4l_bound_align_image' drivers/built-in.o: In function `s5pcsis_probe': policy.c:(.text+0x13b440): undefined reference to `v4l2_of_parse_endpoint' policy.c:(.text+0x13b72c): undefined reference to `v4l2_subdev_init' Changing VIDEO_SAMSUNG_EXYNOS4_IS to tristate means that the dependency from CONFIG_V4L2 propates to the individual Kconfig symbols and they can only be built as loadable modules if V4L2 or any other of the dependencies itself is a module. Signed-off-by: Arnd Bergmann Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/platform/exynos4-is/Kconfig b/drivers/media/platform/exynos4-is/Kconfig index 40423c6c5324..57d42c6172c5 100644 --- a/drivers/media/platform/exynos4-is/Kconfig +++ b/drivers/media/platform/exynos4-is/Kconfig @@ -1,6 +1,6 @@ config VIDEO_SAMSUNG_EXYNOS4_IS - bool "Samsung S5P/EXYNOS4 SoC series Camera Subsystem driver" + tristate "Samsung S5P/EXYNOS4 SoC series Camera Subsystem driver" depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST depends on OF && COMMON_CLK -- cgit v1.2.3 From 4ae2182b1e3407de369f8c5d799543b7db74221b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 25 Jan 2016 10:08:00 -0600 Subject: PCI/AER: Flush workqueue on device remove to avoid use-after-free A Root Port's AER structure (rpc) contains a queue of events. aer_irq() enqueues AER status information and schedules aer_isr() to dequeue and process it. When we remove a device, aer_remove() waits for the queue to be empty, then frees the rpc struct. But aer_isr() references the rpc struct after dequeueing and possibly emptying the queue, which can cause a use-after-free error as in the following scenario with two threads, aer_isr() on the left and a concurrent aer_remove() on the right: Thread A Thread B -------- -------- aer_irq(): rpc->prod_idx++ aer_remove(): wait_event(rpc->prod_idx == rpc->cons_idx) # now blocked until queue becomes empty aer_isr(): # ... rpc->cons_idx++ # unblocked because queue is now empty ... kfree(rpc) mutex_unlock(&rpc->rpc_mutex) To prevent this problem, use flush_work() to wait until the last scheduled instance of aer_isr() has completed before freeing the rpc struct in aer_remove(). I reproduced this use-after-free by flashing a device FPGA and re-enumerating the bus to find the new device. With SLUB debug, this crashes with 0x6b bytes (POISON_FREE, the use-after-free magic number) in GPR25: pcieport 0000:00:00.0: AER: Multiple Corrected error received: id=0000 Unable to handle kernel paging request for data at address 0x27ef9e3e Workqueue: events aer_isr GPR24: dd6aa000 6b6b6b6b 605f8378 605f8360 d99b12c0 604fc674 606b1704 d99b12c0 NIP [602f5328] pci_walk_bus+0xd4/0x104 [bhelgaas: changelog, stable tag] Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Bjorn Helgaas CC: stable@vger.kernel.org --- drivers/pci/pcie/aer/aerdrv.c | 4 +--- drivers/pci/pcie/aer/aerdrv.h | 1 - drivers/pci/pcie/aer/aerdrv_core.c | 2 -- 3 files changed, 1 insertion(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index 0bf82a20a0fb..48d21e0edd56 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -262,7 +262,6 @@ static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev) rpc->rpd = dev; INIT_WORK(&rpc->dpc_handler, aer_isr); mutex_init(&rpc->rpc_mutex); - init_waitqueue_head(&rpc->wait_release); /* Use PCIe bus function to store rpc into PCIe device */ set_service_data(dev, rpc); @@ -285,8 +284,7 @@ static void aer_remove(struct pcie_device *dev) if (rpc->isr) free_irq(dev->irq, dev); - wait_event(rpc->wait_release, rpc->prod_idx == rpc->cons_idx); - + flush_work(&rpc->dpc_handler); aer_disable_rootport(rpc); kfree(rpc); set_service_data(dev, NULL); diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h index 84420b7c9456..945c939a86c5 100644 --- a/drivers/pci/pcie/aer/aerdrv.h +++ b/drivers/pci/pcie/aer/aerdrv.h @@ -72,7 +72,6 @@ struct aer_rpc { * recovery on the same * root port hierarchy */ - wait_queue_head_t wait_release; }; struct aer_broadcast_data { diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 712392504ed9..521e39c1b66d 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -811,8 +811,6 @@ void aer_isr(struct work_struct *work) while (get_e_source(rpc, &e_src)) aer_isr_one_error(p_device, &e_src); mutex_unlock(&rpc->rpc_mutex); - - wake_up(&rpc->wait_release); } /** -- cgit v1.2.3 From 426f04684b30ced3632b29b41cb5c97dca500dca Mon Sep 17 00:00:00 2001 From: Martin Roth Date: Sun, 24 Jan 2016 00:56:19 +0200 Subject: 82xx: FCC: Fixing a bug causing to FCC port lock-up (second try) This is an additional patch to the one already submitted recently. The previous patch was not complete, and the FCC port lock-up scenario has been reproduced in lab. I had an opportunity to check the current patch in lab and the FCC port lock no longer freezes, while the previous patch still locks-up the FCC port. The current patch fixes a pointer arithmetic bug (second bug in the same line), which leads FCC port lock-up during underrun/collision handling. Within the tx_startup() function in mac-fcc.c, the address of last BD is not calculated correctly. As a result of wrong calculation of the last BD address, the next transmitted BD may be set to an area out of the transmit BD ring. This actually causes to port lock-up and it is not recoverable. Signed-off-by: Martin Roth Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fs_enet/mac-fcc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-fcc.c b/drivers/net/ethernet/freescale/fs_enet/mac-fcc.c index 52e0091b4fb2..1ba359f17ec6 100644 --- a/drivers/net/ethernet/freescale/fs_enet/mac-fcc.c +++ b/drivers/net/ethernet/freescale/fs_enet/mac-fcc.c @@ -552,7 +552,7 @@ static void tx_restart(struct net_device *dev) cbd_t __iomem *prev_bd; cbd_t __iomem *last_tx_bd; - last_tx_bd = fep->tx_bd_base + ((fpi->tx_ring - 1) * sizeof(cbd_t)); + last_tx_bd = fep->tx_bd_base + (fpi->tx_ring - 1); /* get the current bd held in TBPTR and scan back from this point */ recheck_bd = curr_tbptr = (cbd_t __iomem *) -- cgit v1.2.3 From db0e51afa481088e6396f11e02018d64113a6578 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 24 Jan 2016 09:22:05 +0000 Subject: net: dsa: fix mv88e6xxx switches Since commit 76e398a62712 ("net: dsa: use switchdev obj for VLAN add/del ops"), the Marvell 88E6xxx switch has been unable to pass traffic between ports - any received traffic is discarded by the switch. Taking a port out of bridge mode and configuring a vlan on it also the port to start passing traffic. With the debugfs files re-instated to allow debug of this issue by comparing the register settings between the working and non-working case, the reason becomes clear: GLOBAL GLOBAL2 SERDES 0 1 2 3 4 5 6 - 7: 1111 707f 2001 2 2 2 2 2 0 2 + 7: 1111 707f 2001 1 1 1 1 1 0 1 Register 7 for the ports is the default vlan tag register, and in the non-working setup, it has been set to 2, despite vlan 2 not being configured. This causes the switch to drop all packets coming in to these ports. The working setup has the default vlan tag register set to 1, which is the default vlan when none is configured. Inspection of the code reveals why. The code prior to this commit was: - for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { ... - if (!err && vlan->flags & BRIDGE_VLAN_INFO_PVID) - err = ds->drv->port_pvid_set(ds, p->port, vid); but the new code is: + for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { ... + } ... + if (pvid) + err = _mv88e6xxx_port_pvid_set(ds, port, vid); This causes the new code to always set the default vlan to one higher than the old code. Fix this. Fixes: 76e398a62712 ("net: dsa: use switchdev obj for VLAN add/del ops") Cc: Signed-off-by: Russell King Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 9fe33fc3c2b9..9cc73bf0a081 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -1532,7 +1532,7 @@ int mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port, /* no PVID with ranges, otherwise it's a bug */ if (pvid) - err = _mv88e6xxx_port_pvid_set(ds, port, vid); + err = _mv88e6xxx_port_pvid_set(ds, port, vlan->vid_end); unlock: mutex_unlock(&ps->smi_mutex); -- cgit v1.2.3 From 5cfa30397bc3677250a3e71aebde7b40ecb2b25a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sun, 24 Jan 2016 16:52:37 +0100 Subject: net: fec: make driver endian-safe The driver treats the device descriptors as CPU-endian, which appears to be correct with the default endianness on both ARM (typically LE) and PowerPC (typically BE) SoCs, indicating that the hardware block is generated differently. Add endianness annotations and byteswaps as necessary. It's not clear that the ifdef there really is correct and shouldn't just be #ifdef CONFIG_ARM, but I also can't test on anything but the i.MX6 HummingBoard where this gets it working with a BE kernel. Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/Makefile | 3 + drivers/net/ethernet/freescale/fec.h | 40 ++++++--- drivers/net/ethernet/freescale/fec_main.c | 130 ++++++++++++++++-------------- 3 files changed, 101 insertions(+), 72 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/freescale/Makefile b/drivers/net/ethernet/freescale/Makefile index 4097c58d17a7..cbe21dc7e37e 100644 --- a/drivers/net/ethernet/freescale/Makefile +++ b/drivers/net/ethernet/freescale/Makefile @@ -4,6 +4,9 @@ obj-$(CONFIG_FEC) += fec.o fec-objs :=fec_main.o fec_ptp.o +CFLAGS_fec_main.o := -D__CHECK_ENDIAN__ +CFLAGS_fec_ptp.o := -D__CHECK_ENDIAN__ + obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y) obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx_phy.o diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 99d33e2d35e6..7dd47a0b8cfb 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -190,28 +190,46 @@ /* * Define the buffer descriptor structure. + * + * Evidently, ARM SoCs have the FEC block generated in a + * little endian mode; or at least ARCH_MXC/SOC_IMX28 do, + * so adjust endianness accordingly. */ #if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) +#define fec32_to_cpu le32_to_cpu +#define fec16_to_cpu le16_to_cpu +#define cpu_to_fec32 cpu_to_le32 +#define cpu_to_fec16 cpu_to_le16 +#define __fec32 __le32 +#define __fec16 __le16 + struct bufdesc { - unsigned short cbd_datlen; /* Data length */ - unsigned short cbd_sc; /* Control and status info */ - unsigned long cbd_bufaddr; /* Buffer address */ + __fec16 cbd_datlen; /* Data length */ + __fec16 cbd_sc; /* Control and status info */ + __fec32 cbd_bufaddr; /* Buffer address */ }; #else +#define fec32_to_cpu be32_to_cpu +#define fec16_to_cpu be16_to_cpu +#define cpu_to_fec32 cpu_to_be32 +#define cpu_to_fec16 cpu_to_be16 +#define __fec32 __be32 +#define __fec16 __be16 + struct bufdesc { - unsigned short cbd_sc; /* Control and status info */ - unsigned short cbd_datlen; /* Data length */ - unsigned long cbd_bufaddr; /* Buffer address */ + __fec16 cbd_sc; /* Control and status info */ + __fec16 cbd_datlen; /* Data length */ + __fec32 cbd_bufaddr; /* Buffer address */ }; #endif struct bufdesc_ex { struct bufdesc desc; - unsigned long cbd_esc; - unsigned long cbd_prot; - unsigned long cbd_bdu; - unsigned long ts; - unsigned short res0[4]; + __fec32 cbd_esc; + __fec32 cbd_prot; + __fec32 cbd_bdu; + __fec32 ts; + __fec16 res0[4]; }; /* diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 502da6f48f95..3f3b9eacc286 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -332,11 +332,13 @@ static void fec_dump(struct net_device *ndev) bdp = txq->tx_bd_base; do { - pr_info("%3u %c%c 0x%04x 0x%08lx %4u %p\n", + pr_info("%3u %c%c 0x%04x 0x%08x %4u %p\n", index, bdp == txq->cur_tx ? 'S' : ' ', bdp == txq->dirty_tx ? 'H' : ' ', - bdp->cbd_sc, bdp->cbd_bufaddr, bdp->cbd_datlen, + fec16_to_cpu(bdp->cbd_sc), + fec32_to_cpu(bdp->cbd_bufaddr), + fec16_to_cpu(bdp->cbd_datlen), txq->tx_skbuff[index]); bdp = fec_enet_get_nextdesc(bdp, fep, 0); index++; @@ -389,7 +391,7 @@ fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, bdp = fec_enet_get_nextdesc(bdp, fep, queue); ebdp = (struct bufdesc_ex *)bdp; - status = bdp->cbd_sc; + status = fec16_to_cpu(bdp->cbd_sc); status &= ~BD_ENET_TX_STATS; status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); frag_len = skb_shinfo(skb)->frags[frag].size; @@ -411,7 +413,7 @@ fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, if (skb->ip_summed == CHECKSUM_PARTIAL) estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; ebdp->cbd_bdu = 0; - ebdp->cbd_esc = estatus; + ebdp->cbd_esc = cpu_to_fec32(estatus); } bufaddr = page_address(this_frag->page.p) + this_frag->page_offset; @@ -435,9 +437,9 @@ fec_enet_txq_submit_frag_skb(struct fec_enet_priv_tx_q *txq, goto dma_mapping_error; } - bdp->cbd_bufaddr = addr; - bdp->cbd_datlen = frag_len; - bdp->cbd_sc = status; + bdp->cbd_bufaddr = cpu_to_fec32(addr); + bdp->cbd_datlen = cpu_to_fec16(frag_len); + bdp->cbd_sc = cpu_to_fec16(status); } return bdp; @@ -445,8 +447,8 @@ dma_mapping_error: bdp = txq->cur_tx; for (i = 0; i < frag; i++) { bdp = fec_enet_get_nextdesc(bdp, fep, queue); - dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, - bdp->cbd_datlen, DMA_TO_DEVICE); + dma_unmap_single(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr), + fec16_to_cpu(bdp->cbd_datlen), DMA_TO_DEVICE); } return ERR_PTR(-ENOMEM); } @@ -483,7 +485,7 @@ static int fec_enet_txq_submit_skb(struct fec_enet_priv_tx_q *txq, /* Fill in a Tx ring entry */ bdp = txq->cur_tx; last_bdp = bdp; - status = bdp->cbd_sc; + status = fec16_to_cpu(bdp->cbd_sc); status &= ~BD_ENET_TX_STATS; /* Set buffer length and buffer pointer */ @@ -539,21 +541,21 @@ static int fec_enet_txq_submit_skb(struct fec_enet_priv_tx_q *txq, estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; ebdp->cbd_bdu = 0; - ebdp->cbd_esc = estatus; + ebdp->cbd_esc = cpu_to_fec32(estatus); } index = fec_enet_get_bd_index(txq->tx_bd_base, last_bdp, fep); /* Save skb pointer */ txq->tx_skbuff[index] = skb; - bdp->cbd_datlen = buflen; - bdp->cbd_bufaddr = addr; + bdp->cbd_datlen = cpu_to_fec16(buflen); + bdp->cbd_bufaddr = cpu_to_fec32(addr); /* Send it on its way. Tell FEC it's ready, interrupt when done, * it's the last BD of the frame, and to put the CRC on the end. */ status |= (BD_ENET_TX_READY | BD_ENET_TX_TC); - bdp->cbd_sc = status; + bdp->cbd_sc = cpu_to_fec16(status); /* If this was the last BD in the ring, start at the beginning again. */ bdp = fec_enet_get_nextdesc(last_bdp, fep, queue); @@ -585,7 +587,7 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, unsigned int estatus = 0; dma_addr_t addr; - status = bdp->cbd_sc; + status = fec16_to_cpu(bdp->cbd_sc); status &= ~BD_ENET_TX_STATS; status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); @@ -607,8 +609,8 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, return NETDEV_TX_BUSY; } - bdp->cbd_datlen = size; - bdp->cbd_bufaddr = addr; + bdp->cbd_datlen = cpu_to_fec16(size); + bdp->cbd_bufaddr = cpu_to_fec32(addr); if (fep->bufdesc_ex) { if (fep->quirks & FEC_QUIRK_HAS_AVB) @@ -616,7 +618,7 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, if (skb->ip_summed == CHECKSUM_PARTIAL) estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; ebdp->cbd_bdu = 0; - ebdp->cbd_esc = estatus; + ebdp->cbd_esc = cpu_to_fec32(estatus); } /* Handle the last BD specially */ @@ -625,10 +627,10 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, if (is_last) { status |= BD_ENET_TX_INTR; if (fep->bufdesc_ex) - ebdp->cbd_esc |= BD_ENET_TX_INT; + ebdp->cbd_esc |= cpu_to_fec32(BD_ENET_TX_INT); } - bdp->cbd_sc = status; + bdp->cbd_sc = cpu_to_fec16(status); return 0; } @@ -647,7 +649,7 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, unsigned short status; unsigned int estatus = 0; - status = bdp->cbd_sc; + status = fec16_to_cpu(bdp->cbd_sc); status &= ~BD_ENET_TX_STATS; status |= (BD_ENET_TX_TC | BD_ENET_TX_READY); @@ -671,8 +673,8 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, } } - bdp->cbd_bufaddr = dmabuf; - bdp->cbd_datlen = hdr_len; + bdp->cbd_bufaddr = cpu_to_fec32(dmabuf); + bdp->cbd_datlen = cpu_to_fec16(hdr_len); if (fep->bufdesc_ex) { if (fep->quirks & FEC_QUIRK_HAS_AVB) @@ -680,10 +682,10 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, if (skb->ip_summed == CHECKSUM_PARTIAL) estatus |= BD_ENET_TX_PINS | BD_ENET_TX_IINS; ebdp->cbd_bdu = 0; - ebdp->cbd_esc = estatus; + ebdp->cbd_esc = cpu_to_fec32(estatus); } - bdp->cbd_sc = status; + bdp->cbd_sc = cpu_to_fec16(status); return 0; } @@ -823,15 +825,15 @@ static void fec_enet_bd_init(struct net_device *dev) /* Initialize the BD for every fragment in the page. */ if (bdp->cbd_bufaddr) - bdp->cbd_sc = BD_ENET_RX_EMPTY; + bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); else - bdp->cbd_sc = 0; + bdp->cbd_sc = cpu_to_fec16(0); bdp = fec_enet_get_nextdesc(bdp, fep, q); } /* Set the last buffer to wrap */ bdp = fec_enet_get_prevdesc(bdp, fep, q); - bdp->cbd_sc |= BD_SC_WRAP; + bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); rxq->cur_rx = rxq->rx_bd_base; } @@ -844,18 +846,18 @@ static void fec_enet_bd_init(struct net_device *dev) for (i = 0; i < txq->tx_ring_size; i++) { /* Initialize the BD for every fragment in the page. */ - bdp->cbd_sc = 0; + bdp->cbd_sc = cpu_to_fec16(0); if (txq->tx_skbuff[i]) { dev_kfree_skb_any(txq->tx_skbuff[i]); txq->tx_skbuff[i] = NULL; } - bdp->cbd_bufaddr = 0; + bdp->cbd_bufaddr = cpu_to_fec32(0); bdp = fec_enet_get_nextdesc(bdp, fep, q); } /* Set the last buffer to wrap */ bdp = fec_enet_get_prevdesc(bdp, fep, q); - bdp->cbd_sc |= BD_SC_WRAP; + bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); txq->dirty_tx = bdp; } } @@ -947,8 +949,10 @@ fec_restart(struct net_device *ndev) */ if (fep->quirks & FEC_QUIRK_ENET_MAC) { memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN); - writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW); - writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH); + writel((__force u32)cpu_to_be32(temp_mac[0]), + fep->hwp + FEC_ADDR_LOW); + writel((__force u32)cpu_to_be32(temp_mac[1]), + fep->hwp + FEC_ADDR_HIGH); } /* Clear any outstanding interrupt. */ @@ -1222,7 +1226,7 @@ fec_enet_tx_queue(struct net_device *ndev, u16 queue_id) while (bdp != READ_ONCE(txq->cur_tx)) { /* Order the load of cur_tx and cbd_sc */ rmb(); - status = READ_ONCE(bdp->cbd_sc); + status = fec16_to_cpu(READ_ONCE(bdp->cbd_sc)); if (status & BD_ENET_TX_READY) break; @@ -1230,10 +1234,12 @@ fec_enet_tx_queue(struct net_device *ndev, u16 queue_id) skb = txq->tx_skbuff[index]; txq->tx_skbuff[index] = NULL; - if (!IS_TSO_HEADER(txq, bdp->cbd_bufaddr)) - dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, - bdp->cbd_datlen, DMA_TO_DEVICE); - bdp->cbd_bufaddr = 0; + if (!IS_TSO_HEADER(txq, fec32_to_cpu(bdp->cbd_bufaddr))) + dma_unmap_single(&fep->pdev->dev, + fec32_to_cpu(bdp->cbd_bufaddr), + fec16_to_cpu(bdp->cbd_datlen), + DMA_TO_DEVICE); + bdp->cbd_bufaddr = cpu_to_fec32(0); if (!skb) { bdp = fec_enet_get_nextdesc(bdp, fep, queue_id); continue; @@ -1264,7 +1270,7 @@ fec_enet_tx_queue(struct net_device *ndev, u16 queue_id) struct skb_shared_hwtstamps shhwtstamps; struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; - fec_enet_hwtstamp(fep, ebdp->ts, &shhwtstamps); + fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), &shhwtstamps); skb_tstamp_tx(skb, &shhwtstamps); } @@ -1324,10 +1330,8 @@ fec_enet_new_rxbdp(struct net_device *ndev, struct bufdesc *bdp, struct sk_buff if (off) skb_reserve(skb, fep->rx_align + 1 - off); - bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data, - FEC_ENET_RX_FRSIZE - fep->rx_align, - DMA_FROM_DEVICE); - if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) { + bdp->cbd_bufaddr = cpu_to_fec32(dma_map_single(&fep->pdev->dev, skb->data, FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE)); + if (dma_mapping_error(&fep->pdev->dev, fec32_to_cpu(bdp->cbd_bufaddr))) { if (net_ratelimit()) netdev_err(ndev, "Rx DMA memory map failed\n"); return -ENOMEM; @@ -1349,7 +1353,8 @@ static bool fec_enet_copybreak(struct net_device *ndev, struct sk_buff **skb, if (!new_skb) return false; - dma_sync_single_for_cpu(&fep->pdev->dev, bdp->cbd_bufaddr, + dma_sync_single_for_cpu(&fep->pdev->dev, + fec32_to_cpu(bdp->cbd_bufaddr), FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE); if (!swap) @@ -1396,7 +1401,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) */ bdp = rxq->cur_rx; - while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) { + while (!((status = fec16_to_cpu(bdp->cbd_sc)) & BD_ENET_RX_EMPTY)) { if (pkt_received >= budget) break; @@ -1438,7 +1443,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) /* Process the incoming frame. */ ndev->stats.rx_packets++; - pkt_len = bdp->cbd_datlen; + pkt_len = fec16_to_cpu(bdp->cbd_datlen); ndev->stats.rx_bytes += pkt_len; index = fec_enet_get_bd_index(rxq->rx_bd_base, bdp, fep); @@ -1456,7 +1461,8 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) ndev->stats.rx_dropped++; goto rx_processing_done; } - dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, + dma_unmap_single(&fep->pdev->dev, + fec32_to_cpu(bdp->cbd_bufaddr), FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE); } @@ -1475,7 +1481,8 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) /* If this is a VLAN packet remove the VLAN Tag */ vlan_packet_rcvd = false; if ((ndev->features & NETIF_F_HW_VLAN_CTAG_RX) && - fep->bufdesc_ex && (ebdp->cbd_esc & BD_ENET_RX_VLAN)) { + fep->bufdesc_ex && + (ebdp->cbd_esc & cpu_to_fec32(BD_ENET_RX_VLAN))) { /* Push and remove the vlan tag */ struct vlan_hdr *vlan_header = (struct vlan_hdr *) (data + ETH_HLEN); @@ -1491,12 +1498,12 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) /* Get receive timestamp from the skb */ if (fep->hwts_rx_en && fep->bufdesc_ex) - fec_enet_hwtstamp(fep, ebdp->ts, + fec_enet_hwtstamp(fep, fec32_to_cpu(ebdp->ts), skb_hwtstamps(skb)); if (fep->bufdesc_ex && (fep->csum_flags & FLAG_RX_CSUM_ENABLED)) { - if (!(ebdp->cbd_esc & FLAG_RX_CSUM_ERROR)) { + if (!(ebdp->cbd_esc & cpu_to_fec32(FLAG_RX_CSUM_ERROR))) { /* don't check it */ skb->ip_summed = CHECKSUM_UNNECESSARY; } else { @@ -1513,7 +1520,8 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id) napi_gro_receive(&fep->napi, skb); if (is_copybreak) { - dma_sync_single_for_device(&fep->pdev->dev, bdp->cbd_bufaddr, + dma_sync_single_for_device(&fep->pdev->dev, + fec32_to_cpu(bdp->cbd_bufaddr), FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE); } else { @@ -1527,12 +1535,12 @@ rx_processing_done: /* Mark the buffer empty */ status |= BD_ENET_RX_EMPTY; - bdp->cbd_sc = status; + bdp->cbd_sc = cpu_to_fec16(status); if (fep->bufdesc_ex) { struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; - ebdp->cbd_esc = BD_ENET_RX_INT; + ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); ebdp->cbd_prot = 0; ebdp->cbd_bdu = 0; } @@ -2662,7 +2670,7 @@ static void fec_enet_free_buffers(struct net_device *ndev) rxq->rx_skbuff[i] = NULL; if (skb) { dma_unmap_single(&fep->pdev->dev, - bdp->cbd_bufaddr, + fec32_to_cpu(bdp->cbd_bufaddr), FEC_ENET_RX_FRSIZE - fep->rx_align, DMA_FROM_DEVICE); dev_kfree_skb(skb); @@ -2777,11 +2785,11 @@ fec_enet_alloc_rxq_buffers(struct net_device *ndev, unsigned int queue) } rxq->rx_skbuff[i] = skb; - bdp->cbd_sc = BD_ENET_RX_EMPTY; + bdp->cbd_sc = cpu_to_fec16(BD_ENET_RX_EMPTY); if (fep->bufdesc_ex) { struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; - ebdp->cbd_esc = BD_ENET_RX_INT; + ebdp->cbd_esc = cpu_to_fec32(BD_ENET_RX_INT); } bdp = fec_enet_get_nextdesc(bdp, fep, queue); @@ -2789,7 +2797,7 @@ fec_enet_alloc_rxq_buffers(struct net_device *ndev, unsigned int queue) /* Set the last buffer to wrap. */ bdp = fec_enet_get_prevdesc(bdp, fep, queue); - bdp->cbd_sc |= BD_SC_WRAP; + bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); return 0; err_alloc: @@ -2812,12 +2820,12 @@ fec_enet_alloc_txq_buffers(struct net_device *ndev, unsigned int queue) if (!txq->tx_bounce[i]) goto err_alloc; - bdp->cbd_sc = 0; - bdp->cbd_bufaddr = 0; + bdp->cbd_sc = cpu_to_fec16(0); + bdp->cbd_bufaddr = cpu_to_fec32(0); if (fep->bufdesc_ex) { struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp; - ebdp->cbd_esc = BD_ENET_TX_INT; + ebdp->cbd_esc = cpu_to_fec32(BD_ENET_TX_INT); } bdp = fec_enet_get_nextdesc(bdp, fep, queue); @@ -2825,7 +2833,7 @@ fec_enet_alloc_txq_buffers(struct net_device *ndev, unsigned int queue) /* Set the last buffer to wrap. */ bdp = fec_enet_get_prevdesc(bdp, fep, queue); - bdp->cbd_sc |= BD_SC_WRAP; + bdp->cbd_sc |= cpu_to_fec16(BD_SC_WRAP); return 0; -- cgit v1.2.3 From 36df745536ab81956cf68329c8049ad07f4a0cf0 Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Mon, 25 Jan 2016 11:43:09 +0530 Subject: net: macb: fix build warning We are getting build warning about: macb.c:2889:13: warning: 'tx_clk' may be used uninitialized in this function macb.c:2888:11: warning: 'hclk' may be used uninitialized in this function In reality they are not used uninitialized as clk_init() will initialize them, this patch will just silence the warning. Signed-off-by: Sudip Mukherjee Acked-by: Nicolas Ferre Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 9d9984a87d42..50c94104f19c 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -2823,7 +2823,7 @@ static int macb_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; struct device_node *phy_node; const struct macb_config *macb_config = NULL; - struct clk *pclk, *hclk, *tx_clk; + struct clk *pclk, *hclk = NULL, *tx_clk = NULL; unsigned int queue_mask, num_queues; struct macb_platform_data *pdata; bool native_io; -- cgit v1.2.3 From 62f2aaabcf41b9e69d0356a7c1716b173241c105 Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Mon, 25 Jan 2016 13:05:20 +0530 Subject: defxx: fix build warning We are getting many build warnings about: 'bar_start' may be used uninitialized and 'bar_len' may be used uninitialized They are not actually uninitialized as dfx_get_bars() will initialize them properly. But still lets have them initialized just to satisfy the compiler (gcc 4.8.2). Signed-off-by: Sudip Mukherjee Acked-by: Maciej W. Rozycki Signed-off-by: David S. Miller --- drivers/net/fddi/defxx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/fddi/defxx.c b/drivers/net/fddi/defxx.c index 7f975a2c8990..b0de8ecd7fe8 100644 --- a/drivers/net/fddi/defxx.c +++ b/drivers/net/fddi/defxx.c @@ -533,8 +533,8 @@ static int dfx_register(struct device *bdev) const char *print_name = dev_name(bdev); struct net_device *dev; DFX_board_t *bp; /* board pointer */ - resource_size_t bar_start[3]; /* pointers to ports */ - resource_size_t bar_len[3]; /* resource length */ + resource_size_t bar_start[3] = {0}; /* pointers to ports */ + resource_size_t bar_len[3] = {0}; /* resource length */ int alloc_size; /* total buffer size used */ struct resource *region; int err = 0; @@ -3697,8 +3697,8 @@ static void dfx_unregister(struct device *bdev) int dfx_bus_pci = dev_is_pci(bdev); int dfx_bus_tc = DFX_BUS_TC(bdev); int dfx_use_mmio = DFX_MMIO || dfx_bus_tc; - resource_size_t bar_start[3]; /* pointers to ports */ - resource_size_t bar_len[3]; /* resource lengths */ + resource_size_t bar_start[3] = {0}; /* pointers to ports */ + resource_size_t bar_len[3] = {0}; /* resource lengths */ int alloc_size; /* total buffer size used */ unregister_netdev(dev); -- cgit v1.2.3 From 05f3b50ea81d7af5479b55147ef98f8bbcd4a8b9 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 25 Jan 2016 11:40:50 +0100 Subject: net: fec: use CONFIG_ARM instead of CONFIG_ARCH_MXC/SOC_IMX28 As Arnd Bergmann points out, using CONFIG_ARCH_MXC and/or SOC_IMX28 is wrong if some other ARM platform uses this device - the operation of the driver would depend on an unrelated ARM platform that might or might not be set for multi-platform kernels. Prior to my previous patch, any other platforms using it would have been broken already due to having the cbd_datlen/cbd_sc fields in the wrong order, but byte ordering correctly, so no such platforms can exist and work today. In any case, it seems likely that only Freescale SoCs use this part, and those are little-endian on ARM, so CONFIG_ARM is safe for them. Signed-off-by: Johannes Berg Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.h | 8 +++----- drivers/net/ethernet/freescale/fec_main.c | 3 +-- 2 files changed, 4 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 7dd47a0b8cfb..2106d72c91dc 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -19,8 +19,7 @@ #include #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ - defined(CONFIG_M520x) || defined(CONFIG_M532x) || \ - defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) + defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) /* * Just figures, Motorola would have to change the offsets for * registers in the same peripheral device on different models @@ -192,10 +191,9 @@ * Define the buffer descriptor structure. * * Evidently, ARM SoCs have the FEC block generated in a - * little endian mode; or at least ARCH_MXC/SOC_IMX28 do, - * so adjust endianness accordingly. + * little endian mode so adjust endianness accordingly. */ -#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) +#if defined(CONFIG_ARM) #define fec32_to_cpu le32_to_cpu #define fec16_to_cpu le16_to_cpu #define cpu_to_fec32 cpu_to_le32 diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 3f3b9eacc286..41c81f6ec630 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -2153,8 +2153,7 @@ static int fec_enet_get_regs_len(struct net_device *ndev) /* List of registers that can be safety be read to dump them with ethtool */ #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ - defined(CONFIG_M520x) || defined(CONFIG_M532x) || \ - defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) + defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) static u32 fec_enet_register_offset[] = { FEC_IEVENT, FEC_IMASK, FEC_R_DES_ACTIVE_0, FEC_X_DES_ACTIVE_0, FEC_ECNTRL, FEC_MII_DATA, FEC_MII_SPEED, FEC_MIB_CTRLSTAT, FEC_R_CNTRL, -- cgit v1.2.3 From 757647e10e55c01fb7a9c4356529442e316a7c72 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Mon, 25 Jan 2016 16:00:41 +0100 Subject: hv_netvsc: use skb_get_hash() instead of a homegrown implementation Recent changes to 'struct flow_keys' (e.g commit d34af823ff40 ("net: Add VLAN ID to flow_keys")) introduced a performance regression in netvsc driver. Is problem is, however, not the above mentioned commit but the fact that netvsc_set_hash() function did some assumptions on the struct flow_keys data layout and this is wrong. Get rid of netvsc_set_hash() by switching to skb_get_hash(). This change will also imply switching to Jenkins hash from the currently used Toeplitz but it seems there is no good excuse for Toeplitz to stay. Signed-off-by: Vitaly Kuznetsov Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc_drv.c | 67 ++--------------------------------------- 1 file changed, 3 insertions(+), 64 deletions(-) (limited to 'drivers') diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 1c8db9afdcda..1d3a66563bac 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -196,65 +196,6 @@ static void *init_ppi_data(struct rndis_message *msg, u32 ppi_size, return ppi; } -union sub_key { - u64 k; - struct { - u8 pad[3]; - u8 kb; - u32 ka; - }; -}; - -/* Toeplitz hash function - * data: network byte order - * return: host byte order - */ -static u32 comp_hash(u8 *key, int klen, void *data, int dlen) -{ - union sub_key subk; - int k_next = 4; - u8 dt; - int i, j; - u32 ret = 0; - - subk.k = 0; - subk.ka = ntohl(*(u32 *)key); - - for (i = 0; i < dlen; i++) { - subk.kb = key[k_next]; - k_next = (k_next + 1) % klen; - dt = ((u8 *)data)[i]; - for (j = 0; j < 8; j++) { - if (dt & 0x80) - ret ^= subk.ka; - dt <<= 1; - subk.k <<= 1; - } - } - - return ret; -} - -static bool netvsc_set_hash(u32 *hash, struct sk_buff *skb) -{ - struct flow_keys flow; - int data_len; - - if (!skb_flow_dissect_flow_keys(skb, &flow, 0) || - !(flow.basic.n_proto == htons(ETH_P_IP) || - flow.basic.n_proto == htons(ETH_P_IPV6))) - return false; - - if (flow.basic.ip_proto == IPPROTO_TCP) - data_len = 12; - else - data_len = 8; - - *hash = comp_hash(netvsc_hash_key, HASH_KEYLEN, &flow, data_len); - - return true; -} - static u16 netvsc_select_queue(struct net_device *ndev, struct sk_buff *skb, void *accel_priv, select_queue_fallback_t fallback) { @@ -267,11 +208,9 @@ static u16 netvsc_select_queue(struct net_device *ndev, struct sk_buff *skb, if (nvsc_dev == NULL || ndev->real_num_tx_queues <= 1) return 0; - if (netvsc_set_hash(&hash, skb)) { - q_idx = nvsc_dev->send_table[hash % VRSS_SEND_TAB_SIZE] % - ndev->real_num_tx_queues; - skb_set_hash(skb, hash, PKT_HASH_TYPE_L3); - } + hash = skb_get_hash(skb); + q_idx = nvsc_dev->send_table[hash % VRSS_SEND_TAB_SIZE] % + ndev->real_num_tx_queues; if (!nvsc_dev->chn_table[q_idx]) q_idx = 0; -- cgit v1.2.3 From c85e4924452ae8225c8829f3fa8a2f7baa34bc5c Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Mon, 25 Jan 2016 09:49:31 -0800 Subject: hv_netvsc: Fix book keeping of skb during batching process Since eliminating send_completion_tid from struct hv_netvsc_packet, we haven't add proper book keeping for the skb of the batched packet. This patch fixes this issue and allows the previous skb is properly freed. Otherwise, a panic may happen. Thanks to Simon Xiao for bisecting and analysis. Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller --- drivers/net/hyperv/hyperv_net.h | 1 + drivers/net/hyperv/netvsc.c | 33 ++++++++++++++++++++++----------- 2 files changed, 23 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index f4130af09244..fcb92c0d0eb9 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -624,6 +624,7 @@ struct nvsp_message { #define RNDIS_PKT_ALIGN_DEFAULT 8 struct multi_send_data { + struct sk_buff *skb; /* skb containing the pkt */ struct hv_netvsc_packet *pkt; /* netvsc pkt pending */ u32 count; /* counter of batched packets */ }; diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 059fc5231601..ec313fc08d82 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -841,6 +841,18 @@ static inline int netvsc_send_pkt( return ret; } +/* Move packet out of multi send data (msd), and clear msd */ +static inline void move_pkt_msd(struct hv_netvsc_packet **msd_send, + struct sk_buff **msd_skb, + struct multi_send_data *msdp) +{ + *msd_skb = msdp->skb; + *msd_send = msdp->pkt; + msdp->skb = NULL; + msdp->pkt = NULL; + msdp->count = 0; +} + int netvsc_send(struct hv_device *device, struct hv_netvsc_packet *packet, struct rndis_message *rndis_msg, @@ -855,6 +867,7 @@ int netvsc_send(struct hv_device *device, unsigned int section_index = NETVSC_INVALID_INDEX; struct multi_send_data *msdp; struct hv_netvsc_packet *msd_send = NULL, *cur_send = NULL; + struct sk_buff *msd_skb = NULL; bool try_batch; bool xmit_more = (skb != NULL) ? skb->xmit_more : false; @@ -897,10 +910,8 @@ int netvsc_send(struct hv_device *device, net_device->send_section_size) { section_index = netvsc_get_next_send_section(net_device); if (section_index != NETVSC_INVALID_INDEX) { - msd_send = msdp->pkt; - msdp->pkt = NULL; - msdp->count = 0; - msd_len = 0; + move_pkt_msd(&msd_send, &msd_skb, msdp); + msd_len = 0; } } @@ -919,31 +930,31 @@ int netvsc_send(struct hv_device *device, packet->total_data_buflen += msd_len; } - if (msdp->pkt) - dev_kfree_skb_any(skb); + if (msdp->skb) + dev_kfree_skb_any(msdp->skb); if (xmit_more && !packet->cp_partial) { + msdp->skb = skb; msdp->pkt = packet; msdp->count++; } else { cur_send = packet; + msdp->skb = NULL; msdp->pkt = NULL; msdp->count = 0; } } else { - msd_send = msdp->pkt; - msdp->pkt = NULL; - msdp->count = 0; + move_pkt_msd(&msd_send, &msd_skb, msdp); cur_send = packet; } if (msd_send) { - m_ret = netvsc_send_pkt(msd_send, net_device, pb, skb); + m_ret = netvsc_send_pkt(msd_send, net_device, NULL, msd_skb); if (m_ret != 0) { netvsc_free_send_slot(net_device, msd_send->send_buf_index); - dev_kfree_skb_any(skb); + dev_kfree_skb_any(msd_skb); } } -- cgit v1.2.3 From fb3296335500aaff61333df8eabbccf28761c79d Mon Sep 17 00:00:00 2001 From: Danesh Petigara Date: Mon, 11 Jan 2016 13:22:26 -0800 Subject: drivers: ata: wake port before DMA stop for ALPM The AHCI driver code stops and starts port DMA engines at will without considering the power state of the particular port. The AHCI specification isn't very clear on how to handle this scenario, leaving implementation open to interpretation. Broadcom's STB SATA host controller is unable to handle port DMA controller restarts when the port in question is in low power mode. When a port enters partial or slumber mode, its PHY is powered down. When a controller restart is requested, the controller's internal state machine expects the PHY to be brought back up by software which never happens in this case, resulting in failures. To avoid this situation, logic is added to manually wake up the port just before its DMA engine is stopped, if the port happens to be in a low power state. HBA initiated power management ensures that the port eventually returns to its configured low power state, when the link is idle (as per the conditions listed in the spec). A new host flag is also added to ensure this logic is only exercised for hosts with the above limitation. tj: Formatting changes. Signed-off-by: Danesh Petigara Reviewed-by: Markus Mayer Signed-off-by: Tejun Heo --- drivers/ata/ahci.h | 1 + drivers/ata/ahci_brcmstb.c | 1 + drivers/ata/libahci.c | 23 ++++++++++++++++++++++- 3 files changed, 24 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index a4faa438889c..a44c75d4c284 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -250,6 +250,7 @@ enum { AHCI_HFLAG_MULTI_MSI = 0, AHCI_HFLAG_MULTI_MSIX = 0, #endif + AHCI_HFLAG_WAKE_BEFORE_STOP = (1 << 22), /* wake before DMA stop */ /* ap->flags bits */ diff --git a/drivers/ata/ahci_brcmstb.c b/drivers/ata/ahci_brcmstb.c index b36cae2fd04b..e87bcec0fd7c 100644 --- a/drivers/ata/ahci_brcmstb.c +++ b/drivers/ata/ahci_brcmstb.c @@ -317,6 +317,7 @@ static int brcm_ahci_probe(struct platform_device *pdev) if (IS_ERR(hpriv)) return PTR_ERR(hpriv); hpriv->plat_data = priv; + hpriv->flags = AHCI_HFLAG_WAKE_BEFORE_STOP; brcm_sata_alpm_init(hpriv); diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index d61740e78d6d..284a176076f5 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -593,8 +593,22 @@ EXPORT_SYMBOL_GPL(ahci_start_engine); int ahci_stop_engine(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); + struct ahci_host_priv *hpriv = ap->host->private_data; u32 tmp; + /* + * On some controllers, stopping a port's DMA engine while the port + * is in ALPM state (partial or slumber) results in failures on + * subsequent DMA engine starts. For those controllers, put the + * port back in active state before stopping its DMA engine. + */ + if ((hpriv->flags & AHCI_HFLAG_WAKE_BEFORE_STOP) && + (ap->link.lpm_policy > ATA_LPM_MAX_POWER) && + ahci_set_lpm(&ap->link, ATA_LPM_MAX_POWER, ATA_LPM_WAKE_ONLY)) { + dev_err(ap->host->dev, "Failed to wake up port before engine stop\n"); + return -EIO; + } + tmp = readl(port_mmio + PORT_CMD); /* check if the HBA is idle */ @@ -689,6 +703,9 @@ static int ahci_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, void __iomem *port_mmio = ahci_port_base(ap); if (policy != ATA_LPM_MAX_POWER) { + /* wakeup flag only applies to the max power policy */ + hints &= ~ATA_LPM_WAKE_ONLY; + /* * Disable interrupts on Phy Ready. This keeps us from * getting woken up due to spurious phy ready @@ -704,7 +721,8 @@ static int ahci_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, u32 cmd = readl(port_mmio + PORT_CMD); if (policy == ATA_LPM_MAX_POWER || !(hints & ATA_LPM_HIPM)) { - cmd &= ~(PORT_CMD_ASP | PORT_CMD_ALPE); + if (!(hints & ATA_LPM_WAKE_ONLY)) + cmd &= ~(PORT_CMD_ASP | PORT_CMD_ALPE); cmd |= PORT_CMD_ICC_ACTIVE; writel(cmd, port_mmio + PORT_CMD); @@ -712,6 +730,9 @@ static int ahci_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, /* wait 10ms to be sure we've come out of LPM state */ ata_msleep(ap, 10); + + if (hints & ATA_LPM_WAKE_ONLY) + return 0; } else { cmd |= PORT_CMD_ALPE; if (policy == ATA_LPM_MIN_POWER) -- cgit v1.2.3 From b00622fc34e9d45069bd6e328dfd47ea2ef61468 Mon Sep 17 00:00:00 2001 From: Shikha Jain Date: Mon, 11 Jan 2016 14:55:45 -0800 Subject: libata: blacklist a Viking flash model for MWDMA corruption Viking flash model VRFDFC22048UCHC-TE causes data corruption in MWDMA mode. Cc: xe-kernel@external.cisco.com Signed-off-by: Shikha Jain Signed-off-by: Anil Veliyankara Madam Signed-off-by: Tejun Heo --- drivers/ata/libata-core.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index cbb74719d2c1..55e257c268dd 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4125,6 +4125,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA }, { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, { " 2GB ATA Flash Disk", "ADMA428M", ATA_HORKAGE_NODMA }, + { "VRFDFC22048UCHC-TE*", NULL, ATA_HORKAGE_NODMA }, /* Odd clown on sil3726/4726 PMPs */ { "Config Disk", NULL, ATA_HORKAGE_DISABLE }, -- cgit v1.2.3 From 566d1827df2ef0cbe921d3d6946ac3007b1a6938 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 15 Jan 2016 15:13:05 -0500 Subject: libata: disable forced PORTS_IMPL for >= AHCI 1.3 Some early controllers incorrectly reported zero ports in PORTS_IMPL register and the ahci driver fabricates PORTS_IMPL from the number of ports in those cases. This hasn't mattered but with the new nvme controllers there are cases where zero PORTS_IMPL is valid and should be honored. Disable the workaround for >= AHCI 1.3. Signed-off-by: Tejun Heo Reported-by: Andy Lutomirski Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com Cc: Sergei Shtylyov Cc: stable@vger.kernel.org --- drivers/ata/libahci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 284a176076f5..402967902cbe 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -496,8 +496,8 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv) } } - /* fabricate port_map from cap.nr_ports */ - if (!port_map) { + /* fabricate port_map from cap.nr_ports for < AHCI 1.3 */ + if (!port_map && vers < 0x10300) { port_map = (1 << ahci_nr_ports(cap)) - 1; dev_warn(dev, "forcing PORTS_IMPL to 0x%x\n", port_map); -- cgit v1.2.3 From 5cae7615b613381a04d3dd06b8237234cc3f7cc9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 20 Jan 2016 19:53:02 -0800 Subject: i40e: fix build warnings Fixes following build warnings : drivers/net/ethernet/intel/i40e/i40e_main.c:7057:13: warning: 'i40e_sync_udp_filters_subtask' defined but not used [-Wunused-function] drivers/net/ethernet/intel/i40e/i40e_main.c:8524:13: warning: 'i40e_add_vxlan_port' defined but not used [-Wunused-function] drivers/net/ethernet/intel/i40e/i40e_main.c:8569:13: warning: 'i40e_del_vxlan_port' defined but not used [-Wunused-function] drivers/net/ethernet/intel/i40e/i40e_main.c:8604:13: warning: 'i40e_add_geneve_port' defined but not used [-Wunused-function] drivers/net/ethernet/intel/i40e/i40e_main.c:8651:13: warning: 'i40e_del_geneve_port' defined but not used [-Wunused-function] Fixes: 6a899024058d ("i40e: geneve tunnel offload support") Signed-off-by: Eric Dumazet Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index bb4612c159fd..8f3b53e0dc46 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -7117,9 +7117,7 @@ static void i40e_service_task(struct work_struct *work) i40e_watchdog_subtask(pf); i40e_fdir_reinit_subtask(pf); i40e_sync_filters_subtask(pf); -#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE) i40e_sync_udp_filters_subtask(pf); -#endif i40e_clean_adminq_subtask(pf); i40e_service_event_complete(pf); @@ -8515,6 +8513,8 @@ static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port) } #endif + +#if IS_ENABLED(CONFIG_VXLAN) /** * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up * @netdev: This physical port's netdev @@ -8524,7 +8524,6 @@ static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port) static void i40e_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family, __be16 port) { -#if IS_ENABLED(CONFIG_VXLAN) struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; @@ -8557,7 +8556,6 @@ static void i40e_add_vxlan_port(struct net_device *netdev, pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN; pf->pending_udp_bitmap |= BIT_ULL(next_idx); pf->flags |= I40E_FLAG_UDP_FILTER_SYNC; -#endif } /** @@ -8569,7 +8567,6 @@ static void i40e_add_vxlan_port(struct net_device *netdev, static void i40e_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family, __be16 port) { -#if IS_ENABLED(CONFIG_VXLAN) struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; @@ -8592,9 +8589,10 @@ static void i40e_del_vxlan_port(struct net_device *netdev, netdev_warn(netdev, "vxlan port %d was not found, not deleting\n", ntohs(port)); } -#endif } +#endif +#if IS_ENABLED(CONFIG_GENEVE) /** * i40e_add_geneve_port - Get notifications about GENEVE ports that come up * @netdev: This physical port's netdev @@ -8604,7 +8602,6 @@ static void i40e_del_vxlan_port(struct net_device *netdev, static void i40e_add_geneve_port(struct net_device *netdev, sa_family_t sa_family, __be16 port) { -#if IS_ENABLED(CONFIG_GENEVE) struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; @@ -8639,7 +8636,6 @@ static void i40e_add_geneve_port(struct net_device *netdev, pf->flags |= I40E_FLAG_UDP_FILTER_SYNC; dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port)); -#endif } /** @@ -8651,7 +8647,6 @@ static void i40e_add_geneve_port(struct net_device *netdev, static void i40e_del_geneve_port(struct net_device *netdev, sa_family_t sa_family, __be16 port) { -#if IS_ENABLED(CONFIG_GENEVE) struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; struct i40e_pf *pf = vsi->back; @@ -8677,8 +8672,8 @@ static void i40e_del_geneve_port(struct net_device *netdev, netdev_warn(netdev, "geneve port %d was not found, not deleting\n", ntohs(port)); } -#endif } +#endif static int i40e_get_phys_port_id(struct net_device *netdev, struct netdev_phys_item_id *ppid) -- cgit v1.2.3 From 79febbc19b81b5242339bffb90e4dbea15015dde Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 20 Jan 2016 19:53:17 -0800 Subject: net: i40e: shut up uninitialized variable warnings intel/i40e/i40e_txrx.c: In function 'i40e_xmit_frame_ring': intel/i40e/i40e_txrx.c:2367:20: error: 'oiph' may be used uninitialized in this function [-Werror=maybe-uninitialized] intel/i40e/i40e_txrx.c:2317:16: note: 'oiph' was declared here intel/i40e/i40e_txrx.c:2367:17: error: 'oudph' may be used uninitialized in this function [-Werror=maybe-uninitialized] intel/i40e/i40e_txrx.c:2316:17: note: 'oudph' was declared here Signed-off-by: Arnd Bergmann Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 720516b0e8ee..47bd8b3145a7 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2313,8 +2313,8 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags, struct iphdr *this_ip_hdr; u32 network_hdr_len; u8 l4_hdr = 0; - struct udphdr *oudph; - struct iphdr *oiph; + struct udphdr *oudph = NULL; + struct iphdr *oiph = NULL; u32 l4_tunnel = 0; if (skb->encapsulation) { -- cgit v1.2.3 From ca296c571f6929e42dc0ac0bb5c81cdb5323362d Mon Sep 17 00:00:00 2001 From: Oren Givon Date: Thu, 14 Jan 2016 10:24:10 +0200 Subject: iwlwifi: update support for 3168 series firmware and NVM Update the struct which defines the support for 3168 cards. Now it will search for a firmware of this format: iwlwifi-3168-XX.ucode Also, set the minimum version of the ucode to 20. Update the minimum NVM version and minimum NVM calibrations version of the 3168 series. Signed-off-by: Oren Givon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/iwl-7000.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-7000.c b/drivers/net/wireless/intel/iwlwifi/iwl-7000.c index e60cf141ed79..fa41a5e1c890 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-7000.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-7000.c @@ -74,16 +74,19 @@ #define IWL7260_UCODE_API_MAX 17 #define IWL7265_UCODE_API_MAX 17 #define IWL7265D_UCODE_API_MAX 20 +#define IWL3168_UCODE_API_MAX 20 /* Oldest version we won't warn about */ #define IWL7260_UCODE_API_OK 13 #define IWL7265_UCODE_API_OK 13 #define IWL7265D_UCODE_API_OK 13 +#define IWL3168_UCODE_API_OK 20 /* Lowest firmware API version supported */ #define IWL7260_UCODE_API_MIN 13 #define IWL7265_UCODE_API_MIN 13 #define IWL7265D_UCODE_API_MIN 13 +#define IWL3168_UCODE_API_MIN 20 /* NVM versions */ #define IWL7260_NVM_VERSION 0x0a1d @@ -92,6 +95,8 @@ #define IWL3160_TX_POWER_VERSION 0xffff /* meaningless */ #define IWL3165_NVM_VERSION 0x709 #define IWL3165_TX_POWER_VERSION 0xffff /* meaningless */ +#define IWL3168_NVM_VERSION 0xd01 +#define IWL3168_TX_POWER_VERSION 0xffff /* meaningless */ #define IWL7265_NVM_VERSION 0x0a1d #define IWL7265_TX_POWER_VERSION 0xffff /* meaningless */ #define IWL7265D_NVM_VERSION 0x0c11 @@ -109,6 +114,9 @@ #define IWL3160_FW_PRE "iwlwifi-3160-" #define IWL3160_MODULE_FIRMWARE(api) IWL3160_FW_PRE __stringify(api) ".ucode" +#define IWL3168_FW_PRE "iwlwifi-3168-" +#define IWL3168_MODULE_FIRMWARE(api) IWL3168_FW_PRE __stringify(api) ".ucode" + #define IWL7265_FW_PRE "iwlwifi-7265-" #define IWL7265_MODULE_FIRMWARE(api) IWL7265_FW_PRE __stringify(api) ".ucode" @@ -180,6 +188,12 @@ static const struct iwl_ht_params iwl7000_ht_params = { .ucode_api_ok = IWL7265_UCODE_API_OK, \ .ucode_api_min = IWL7265_UCODE_API_MIN +#define IWL_DEVICE_3008 \ + IWL_DEVICE_7000_COMMON, \ + .ucode_api_max = IWL3168_UCODE_API_MAX, \ + .ucode_api_ok = IWL3168_UCODE_API_OK, \ + .ucode_api_min = IWL3168_UCODE_API_MIN + #define IWL_DEVICE_7005D \ IWL_DEVICE_7000_COMMON, \ .ucode_api_max = IWL7265D_UCODE_API_MAX, \ @@ -299,11 +313,11 @@ const struct iwl_cfg iwl3165_2ac_cfg = { const struct iwl_cfg iwl3168_2ac_cfg = { .name = "Intel(R) Dual Band Wireless AC 3168", - .fw_name_pre = IWL7265D_FW_PRE, - IWL_DEVICE_7000, + .fw_name_pre = IWL3168_FW_PRE, + IWL_DEVICE_3008, .ht_params = &iwl7000_ht_params, - .nvm_ver = IWL3165_NVM_VERSION, - .nvm_calib_ver = IWL3165_TX_POWER_VERSION, + .nvm_ver = IWL3168_NVM_VERSION, + .nvm_calib_ver = IWL3168_TX_POWER_VERSION, .pwr_tx_backoffs = iwl7265_pwr_tx_backoffs, .dccm_len = IWL7265_DCCM_LEN, }; @@ -376,5 +390,6 @@ const struct iwl_cfg iwl7265d_n_cfg = { MODULE_FIRMWARE(IWL7260_MODULE_FIRMWARE(IWL7260_UCODE_API_OK)); MODULE_FIRMWARE(IWL3160_MODULE_FIRMWARE(IWL7260_UCODE_API_OK)); +MODULE_FIRMWARE(IWL3168_MODULE_FIRMWARE(IWL3168_UCODE_API_OK)); MODULE_FIRMWARE(IWL7265_MODULE_FIRMWARE(IWL7265_UCODE_API_OK)); MODULE_FIRMWARE(IWL7265D_MODULE_FIRMWARE(IWL7265D_UCODE_API_OK)); -- cgit v1.2.3 From 69c7fda40921c125eeeef6a827f6270ac6aa1baa Mon Sep 17 00:00:00 2001 From: Gregory Greenman Date: Tue, 29 Dec 2015 11:26:35 +0200 Subject: iwlwifi: mvm: rs: fix TPC statistics handling FW behaviour changed and now updates driver about the used TPC reduction in the following cases: 1. In tx response, which is used mostly for a single frame case 2. In BA notification When tx aggregation fails with the initial rate, FW will send to the driver BA notification and will try to transmit with the next rate, but this time without tx power reduction. Thus, in case of a failure with the initial rate, driver will get two BA notifications, the first one with reduced tx power as in the LQ command and the second one with 0 power reduction. This patch adapts the TPC statistics according to the description above: 1. Use BA notifications instead of Tx response 2. For TPC only, drop the optimization which considers empty BA as one MPDU. The reason is that with TPC we want to recover very quickly from a bad power reduction and, therefore we'd like the success ratio to get an immediate hit when failing to get a BA, so we'd switch back to a lower or zero power reduction Signed-off-by: Gregory Greenman Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h | 6 +- drivers/net/wireless/intel/iwlwifi/mvm/rs.c | 74 ++++++++++++++-------- drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 5 +- 3 files changed, 56 insertions(+), 29 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h index 0036d18334af..ba3f0bbddde8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h @@ -510,6 +510,9 @@ struct iwl_mvm_tx_resp { * @scd_ssn: the index of the last contiguously sent packet * @txed: number of Txed frames in this batch * @txed_2_done: number of Acked frames in this batch + * @reduced_txp: power reduced according to TPC. This is the actual value and + * not a copy from the LQ command. Thus, if not the first rate was used + * for Tx-ing then this value will be set to 0 by FW. */ struct iwl_mvm_ba_notif { __le32 sta_addr_lo32; @@ -524,7 +527,8 @@ struct iwl_mvm_ba_notif { __le16 scd_ssn; u8 txed; u8 txed_2_done; - __le16 reserved1; + u8 reduced_txp; + u8 reserved1; } __packed; /* diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c index 7bb6fd0e4391..94caa88df442 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c @@ -2,6 +2,7 @@ * * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as @@ -724,14 +725,28 @@ static int _rs_collect_tx_data(struct iwl_mvm *mvm, return 0; } -static int rs_collect_tx_data(struct iwl_mvm *mvm, - struct iwl_lq_sta *lq_sta, - struct iwl_scale_tbl_info *tbl, - int scale_index, int attempts, int successes, - u8 reduced_txp) +static int rs_collect_tpc_data(struct iwl_mvm *mvm, + struct iwl_lq_sta *lq_sta, + struct iwl_scale_tbl_info *tbl, + int scale_index, int attempts, int successes, + u8 reduced_txp) +{ + struct iwl_rate_scale_data *window = NULL; + + if (WARN_ON_ONCE(reduced_txp > TPC_MAX_REDUCTION)) + return -EINVAL; + + window = &tbl->tpc_win[reduced_txp]; + return _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes, + window); +} + +static int rs_collect_tlc_data(struct iwl_mvm *mvm, + struct iwl_lq_sta *lq_sta, + struct iwl_scale_tbl_info *tbl, + int scale_index, int attempts, int successes) { struct iwl_rate_scale_data *window = NULL; - int ret; if (scale_index < 0 || scale_index >= IWL_RATE_COUNT) return -EINVAL; @@ -745,16 +760,6 @@ static int rs_collect_tx_data(struct iwl_mvm *mvm, /* Select window for current tx bit rate */ window = &(tbl->win[scale_index]); - - ret = _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes, - window); - if (ret) - return ret; - - if (WARN_ON_ONCE(reduced_txp > TPC_MAX_REDUCTION)) - return -EINVAL; - - window = &tbl->tpc_win[reduced_txp]; return _rs_collect_tx_data(mvm, tbl, scale_index, attempts, successes, window); } @@ -1301,17 +1306,30 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta, * first index into rate scale table. */ if (info->flags & IEEE80211_TX_STAT_AMPDU) { - /* ampdu_ack_len = 0 marks no BA was received. In this case - * treat it as a single frame loss as we don't want the success - * ratio to dip too quickly because a BA wasn't received + rs_collect_tpc_data(mvm, lq_sta, curr_tbl, lq_rate.index, + info->status.ampdu_len, + info->status.ampdu_ack_len, + reduced_txp); + + /* ampdu_ack_len = 0 marks no BA was received. For TLC, treat + * it as a single frame loss as we don't want the success ratio + * to dip too quickly because a BA wasn't received. + * For TPC, there's no need for this optimisation since we want + * to recover very quickly from a bad power reduction and, + * therefore we'd like the success ratio to get an immediate hit + * when failing to get a BA, so we'd switch back to a lower or + * zero power reduction. When FW transmits agg with a rate + * different from the initial rate, it will not use reduced txp + * and will send BA notification twice (one empty with reduced + * txp equal to the value from LQ and one with reduced txp 0). + * We need to update counters for each txp level accordingly. */ if (info->status.ampdu_ack_len == 0) info->status.ampdu_len = 1; - rs_collect_tx_data(mvm, lq_sta, curr_tbl, lq_rate.index, - info->status.ampdu_len, - info->status.ampdu_ack_len, - reduced_txp); + rs_collect_tlc_data(mvm, lq_sta, curr_tbl, lq_rate.index, + info->status.ampdu_len, + info->status.ampdu_ack_len); /* Update success/fail counts if not searching for new mode */ if (lq_sta->rs_state == RS_STATE_STAY_IN_COLUMN) { @@ -1344,9 +1362,13 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta, else continue; - rs_collect_tx_data(mvm, lq_sta, tmp_tbl, lq_rate.index, - 1, i < retries ? 0 : legacy_success, - reduced_txp); + rs_collect_tpc_data(mvm, lq_sta, tmp_tbl, + lq_rate.index, 1, + i < retries ? 0 : legacy_success, + reduced_txp); + rs_collect_tlc_data(mvm, lq_sta, tmp_tbl, + lq_rate.index, 1, + i < retries ? 0 : legacy_success); } /* Update success/fail counts if not searching for new mode */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index 8bf48a7d0f4e..0914ec2fd574 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -1029,7 +1029,6 @@ static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); mvmsta->tid_data[tid].rate_n_flags = le32_to_cpu(tx_resp->initial_rate); - mvmsta->tid_data[tid].reduced_tpc = tx_resp->reduced_tpc; mvmsta->tid_data[tid].tx_time = le16_to_cpu(tx_resp->wireless_media_time); } @@ -1060,7 +1059,7 @@ static void iwl_mvm_tx_info_from_ba_notif(struct ieee80211_tx_info *info, /* TODO: not accounted if the whole A-MPDU failed */ info->status.tx_time = tid_data->tx_time; info->status.status_driver_data[0] = - (void *)(uintptr_t)tid_data->reduced_tpc; + (void *)(uintptr_t)ba_notif->reduced_txp; info->status.status_driver_data[1] = (void *)(uintptr_t)tid_data->rate_n_flags; } @@ -1133,6 +1132,8 @@ void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) scd_flow, ba_resp_scd_ssn, ba_notif->txed, ba_notif->txed_2_done); + IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", + ba_notif->reduced_txp); tid_data->next_reclaimed = ba_resp_scd_ssn; iwl_mvm_check_ratid_empty(mvm, sta, tid); -- cgit v1.2.3 From 625b4a982788fefe1361daee2ea160192cd80572 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:04 +0100 Subject: hwrng: stm32 - Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Reviewed-by: Daniel Thompson Signed-off-by: Herbert Xu --- drivers/char/hw_random/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index dbf22719462f..ff00331bff49 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -372,6 +372,7 @@ config HW_RANDOM_XGENE config HW_RANDOM_STM32 tristate "STMicroelectronics STM32 random number generator" depends on HW_RANDOM && (ARCH_STM32 || COMPILE_TEST) + depends on HAS_IOMEM help This driver provides kernel-side support for the Random Number Generator hardware found on STM32 microcontrollers. -- cgit v1.2.3 From 9c41242817f4b6d908886c0fdb036d9246c50630 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 23 Jan 2016 15:34:10 -0800 Subject: libnvdimm: fix mode determination for e820 devices Correctly display "safe" mode when a btt is established on a e820/memmap defined pmem namespace. Signed-off-by: Dan Williams --- drivers/nvdimm/namespace_devs.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 8ebfcaae3f5a..9edf7eb7d17c 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1277,10 +1277,12 @@ static ssize_t mode_show(struct device *dev, device_lock(dev); claim = ndns->claim; - if (pmem_should_map_pages(dev) || (claim && is_nd_pfn(claim))) - mode = "memory"; - else if (claim && is_nd_btt(claim)) + if (claim && is_nd_btt(claim)) mode = "safe"; + else if (claim && is_nd_pfn(claim)) + mode = "memory"; + else if (!claim && pmem_should_map_pages(dev)) + mode = "memory"; else mode = "raw"; rc = sprintf(buf, "%s\n", mode); -- cgit v1.2.3 From 9a4e7849b5e4e8742d71fa90fbf0722dd0710a56 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 26 Jan 2016 14:49:22 +0000 Subject: component: fix crash on x86_64 with hda audio drivers Maarten reports that the addition of releasing match data to the component helper results in a general protection fault on x86_64. This is caused by the devm resources being freed in reverse order to their allocation, which caused a use-after-free of the match array. Switch the match array to be a more conventional kmalloc/kfree() affair, explicitly freeing it along with the parent match data structure. Reported-by: Maarten Lankhorst Fixes: ce657b1cddf1 ("component: add support for releasing match data") Signed-off-by: Russell King --- drivers/base/component.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/base/component.c b/drivers/base/component.c index 89f5cf68d80a..05cd26c02449 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -206,6 +206,8 @@ static void component_match_release(struct device *master, if (mc->release) mc->release(master, mc->data); } + + kfree(match->compare); } static void devm_component_match_release(struct device *dev, void *res) @@ -221,14 +223,14 @@ static int component_match_realloc(struct device *dev, if (match->alloc == num) return 0; - new = devm_kmalloc_array(dev, num, sizeof(*new), GFP_KERNEL); + new = kmalloc_array(num, sizeof(*new), GFP_KERNEL); if (!new) return -ENOMEM; if (match->compare) { memcpy(new, match->compare, sizeof(*new) * min(match->num, num)); - devm_kfree(dev, match->compare); + kfree(match->compare); } match->compare = new; match->alloc = num; -- cgit v1.2.3 From 0f92db53c10ab608874eea8bbe59491cea2f9a46 Mon Sep 17 00:00:00 2001 From: John Garry Date: Tue, 26 Jan 2016 19:59:12 +0800 Subject: hisi_sas: add dependency for HAS_IOMEM Not every arch has io, so fix build by adding necessary dependency. Signed-off-by: John Garry Suggested-by: Richard Weinberger Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/scsi/hisi_sas/Kconfig b/drivers/scsi/hisi_sas/Kconfig index b67661836c9f..d1dd1616f983 100644 --- a/drivers/scsi/hisi_sas/Kconfig +++ b/drivers/scsi/hisi_sas/Kconfig @@ -1,6 +1,6 @@ config SCSI_HISI_SAS tristate "HiSilicon SAS" - depends on HAS_DMA + depends on HAS_DMA && HAS_IOMEM depends on ARM64 || COMPILE_TEST select SCSI_SAS_LIBSAS select BLK_DEV_INTEGRITY -- cgit v1.2.3 From 0f28ede906a8ad44158a6ef9471a5a412343cced Mon Sep 17 00:00:00 2001 From: John Garry Date: Wed, 27 Jan 2016 01:31:17 +0800 Subject: hisi_sas: fix v1 hw check for slot error Completion header bit CMPLT_HDR_RSPNS_XFRD flags whether the response frame is received into host memory, and not whether the response frame has an error. As such, change the decision on whether a slot has an error. Also redundant check on CMPLT_HDR_CMD_CMPLT_MSK is removed. Fixes: 27a3f229 ("hisi_sas: Add cq interrupt handler") Signed-off-by: John Garry Tested-by: Ricardo Salveti Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index d54381149c0d..d04808ef6b2b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -1293,13 +1293,10 @@ static int slot_complete_v1_hw(struct hisi_hba *hisi_hba, goto out; } - if (cmplt_hdr_data & CMPLT_HDR_ERR_RCRD_XFRD_MSK) { - if (!(cmplt_hdr_data & CMPLT_HDR_CMD_CMPLT_MSK) || - !(cmplt_hdr_data & CMPLT_HDR_RSPNS_XFRD_MSK)) - ts->stat = SAS_DATA_OVERRUN; - else - slot_err_v1_hw(hisi_hba, task, slot); + if (cmplt_hdr_data & CMPLT_HDR_ERR_RCRD_XFRD_MSK && + !(cmplt_hdr_data & CMPLT_HDR_RSPNS_XFRD_MSK)) { + slot_err_v1_hw(hisi_hba, task, slot); goto out; } -- cgit v1.2.3 From 73c13c83491142e2ee7850159fc73b5e0967806f Mon Sep 17 00:00:00 2001 From: Phil Reid Date: Fri, 15 Jan 2016 11:32:22 +0800 Subject: gpio: gpio-altera: Remove gpiochip on probe failure. On failure to setup the irq altera_gpio_probe would return an error but not go to cleanup. This resulted in kernel fault "Unable to handle kernel paging request at virtual address xxxxxxxx" later on in of_gpiochip_find_and_xlate. Signed-off-by: Phil Reid Signed-off-by: Linus Walleij --- drivers/gpio/gpio-altera.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index 2aeaebd1c6e7..3f87a03abc22 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -312,8 +312,8 @@ static int altera_gpio_probe(struct platform_device *pdev) handle_simple_irq, IRQ_TYPE_NONE); if (ret) { - dev_info(&pdev->dev, "could not add irqchip\n"); - return ret; + dev_err(&pdev->dev, "could not add irqchip\n"); + goto teardown; } gpiochip_set_chained_irqchip(&altera_gc->mmchip.gc, @@ -326,6 +326,7 @@ static int altera_gpio_probe(struct platform_device *pdev) skip_irq: return 0; teardown: + of_mm_gpiochip_remove(&altera_gc->mmchip); pr_err("%s: registration failed with status %d\n", node->full_name, ret); -- cgit v1.2.3 From 57480484f9f7631738ef28b952eca3c9081c4291 Mon Sep 17 00:00:00 2001 From: "Jon Medhurst (Tixy)" Date: Tue, 26 Jan 2016 17:59:13 +0000 Subject: component: Detach components when deleting master struct component_master_add_with_match calls find_components which, if any components already exist, it attaches to the master struct. However, if we later encounter an error the master struct is deleted, leaving components with a dangling pointer to it. If the error was a temporary one, e.g. for probe deferral, then when the master device is re-probed, it will fail to find the required components as they appear to already be attached to a master. Fix this by nulling components pointers to the master struct when it is deleted. This code is factored out into a separate function so it can be shared with component_master_del. Signed-off-by: Jon Medhurst Signed-off-by: Russell King --- drivers/base/component.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/base/component.c b/drivers/base/component.c index 05cd26c02449..2738039aae9e 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -285,6 +285,24 @@ void component_match_add_release(struct device *master, } EXPORT_SYMBOL(component_match_add_release); +static void free_master(struct master *master) +{ + struct component_match *match = master->match; + int i; + + list_del(&master->node); + + if (match) { + for (i = 0; i < match->num; i++) { + struct component *c = match->compare[i].component; + if (c) + c->master = NULL; + } + } + + kfree(master); +} + int component_master_add_with_match(struct device *dev, const struct component_master_ops *ops, struct component_match *match) @@ -311,11 +329,9 @@ int component_master_add_with_match(struct device *dev, ret = try_to_bring_up_master(master, NULL); - if (ret < 0) { - /* Delete off the list if we weren't successful */ - list_del(&master->node); - kfree(master); - } + if (ret < 0) + free_master(master); + mutex_unlock(&component_mutex); return ret < 0 ? ret : 0; @@ -326,25 +342,12 @@ void component_master_del(struct device *dev, const struct component_master_ops *ops) { struct master *master; - int i; mutex_lock(&component_mutex); master = __master_find(dev, ops); if (master) { - struct component_match *match = master->match; - take_down_master(master); - - list_del(&master->node); - - if (match) { - for (i = 0; i < match->num; i++) { - struct component *c = match->compare[i].component; - if (c) - c->master = NULL; - } - } - kfree(master); + free_master(master); } mutex_unlock(&component_mutex); } -- cgit v1.2.3 From 46560388c476c8471fde7712c10f9fad8d0d1875 Mon Sep 17 00:00:00 2001 From: Ray Jui Date: Wed, 27 Jan 2016 16:52:24 -0600 Subject: PCI: iproc: Allow multiple devices except on PAXC Commit 943ebae781f5 ("PCI: iproc: Add PAXC interface support") only allowed device 0, which is a regression on BCMA-based platforms. All systems support only one device, a Root Port at 00:00.0, on the root bus. PAXC-based systems support only the Root Port (00:00.0) and a single device (with multiple functions) below it, e.g., 01:00.0, 01:00.1, etc. Non-PAXC systems support arbitrary devices below the Root Port. [bhelgaas: changelog, fold in removal of MAX_NUM_PAXC_PF check] Fixes: 943ebae781f5 ("PCI: iproc: Add PAXC interface support") Reported-by: Rafal Milecki Signed-off-by: Ray Jui Signed-off-by: Bjorn Helgaas --- drivers/pci/host/pcie-iproc.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index 5816bceddb65..a576aeeb22da 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -64,7 +64,6 @@ #define OARR_SIZE_CFG BIT(OARR_SIZE_CFG_SHIFT) #define MAX_NUM_OB_WINDOWS 2 -#define MAX_NUM_PAXC_PF 4 #define IPROC_PCIE_REG_INVALID 0xffff @@ -170,20 +169,6 @@ static inline void iproc_pcie_ob_write(struct iproc_pcie *pcie, writel(val, pcie->base + offset + (window * 8)); } -static inline bool iproc_pcie_device_is_valid(struct iproc_pcie *pcie, - unsigned int slot, - unsigned int fn) -{ - if (slot > 0) - return false; - - /* PAXC can only support limited number of functions */ - if (pcie->type == IPROC_PCIE_PAXC && fn >= MAX_NUM_PAXC_PF) - return false; - - return true; -} - /** * Note access to the configuration registers are protected at the higher layer * by 'pci_lock' in drivers/pci/access.c @@ -199,11 +184,11 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus, u32 val; u16 offset; - if (!iproc_pcie_device_is_valid(pcie, slot, fn)) - return NULL; - /* root complex access */ if (busno == 0) { + if (slot > 0 || fn > 0) + return NULL; + iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_IND_ADDR, where & CFG_IND_ADDR_MASK); offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_IND_DATA); @@ -213,6 +198,14 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus, return (pcie->base + offset); } + /* + * PAXC is connected to an internally emulated EP within the SoC. It + * allows only one device. + */ + if (pcie->type == IPROC_PCIE_PAXC) + if (slot > 0) + return NULL; + /* EP device access */ val = (busno << CFG_ADDR_BUS_NUM_SHIFT) | (slot << CFG_ADDR_DEV_NUM_SHIFT) | -- cgit v1.2.3 From a6ed4a18ba6a6f5a01e024b9d221d6439bf6ca4c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 27 Jan 2016 15:42:25 -0800 Subject: Input: xpad - remove unused function There are two definitions of xpad_identify_controller(), one is used when CONFIG_JOYSTICK_XPAD_LEDS is set, but the other one is empty and never used, and we get a gcc warning about it: drivers/input/joystick/xpad.c:1210:13: warning: 'xpad_identify_controller' defined but not used [-Wunused-function] This removes the second definition. Signed-off-by: Arnd Bergmann Fixes: cae705baa40b ("Input: xpad - re-send LED command on present event") Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/xpad.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 6727954ab74b..e8a84d12b7ff 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1207,7 +1207,6 @@ static void xpad_led_disconnect(struct usb_xpad *xpad) #else static int xpad_led_probe(struct usb_xpad *xpad) { return 0; } static void xpad_led_disconnect(struct usb_xpad *xpad) { } -static void xpad_identify_controller(struct usb_xpad *xpad) { } #endif static int xpad_start_input(struct usb_xpad *xpad) -- cgit v1.2.3 From af6e94634d0a77aa42a9fdee35abd00a95b4ca54 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 27 Jan 2016 15:43:32 -0800 Subject: Input: sirfsoc-onkey - allow modular build CONFIG_INPUT may itself be a loadable module, but the sirf power key driver is listed as 'bool', which makes it possible to select a broken configuration with the driver built-in but the subsystem not loaded. In this configuration, we get a link error: drivers/input/built-in.o: In function `sirfsoc_pwrc_isr': drivers/input/misc/sirfsoc-onkey.c:63: undefined reference to `input_event' drivers/input/built-in.o: In function `sirfsoc_pwrc_isr': include/linux/input.h:414: undefined reference to `input_event' drivers/input/built-in.o: In function `sirfsoc_pwrc_probe': drivers/input/misc/sirfsoc-onkey.c:132: undefined reference to `devm_input_allocate_device' drivers/input/misc/sirfsoc-onkey.c:139: undefined reference to `input_set_capability' drivers/input/misc/sirfsoc-onkey.c:161: undefined reference to `input_register_device' drivers/input/built-in.o: In function `sirfsoc_pwrc_report_event': drivers/input/misc/sirfsoc-onkey.c:48: undefined reference to `input_event' drivers/input/built-in.o: In function `sirfsoc_pwrc_report_event': include/linux/input.h:414: undefined reference to `input_event' drivers/input/built-in.o:(.debug_addr+0x24): undefined reference to `input_event' drivers/input/built-in.o:(.debug_addr+0xbc): undefined reference to `devm_input_allocate_device' drivers/input/built-in.o:(.debug_addr+0x104): undefined reference to `input_set_capability' drivers/input/built-in.o:(.debug_addr+0x128): undefined reference to `input_register_device' This marks the driver as 'tristate' so it becomes possible to have it in a loadable module, mainly to help with randconfig builds. We also have to add a missing semicolon here, which ended up not being needed in built-in mode because the following MODULE_DEVICE_TABLE is an empty macro followed by another semicolon then. Signed-off-by: Arnd Bergmann Signed-off-by: Dmitry Torokhov --- drivers/input/misc/Kconfig | 2 +- drivers/input/misc/sirfsoc-onkey.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index d6d16fa78281..1f2337abcf2f 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -733,7 +733,7 @@ config INPUT_XEN_KBDDEV_FRONTEND module will be called xen-kbdfront. config INPUT_SIRFSOC_ONKEY - bool "CSR SiRFSoC power on/off/suspend key support" + tristate "CSR SiRFSoC power on/off/suspend key support" depends on ARCH_SIRF && OF default y help diff --git a/drivers/input/misc/sirfsoc-onkey.c b/drivers/input/misc/sirfsoc-onkey.c index 9d5b89befe6f..ed7237f19539 100644 --- a/drivers/input/misc/sirfsoc-onkey.c +++ b/drivers/input/misc/sirfsoc-onkey.c @@ -101,7 +101,7 @@ static void sirfsoc_pwrc_close(struct input_dev *input) static const struct of_device_id sirfsoc_pwrc_of_match[] = { { .compatible = "sirf,prima2-pwrc" }, {}, -} +}; MODULE_DEVICE_TABLE(of, sirfsoc_pwrc_of_match); static int sirfsoc_pwrc_probe(struct platform_device *pdev) -- cgit v1.2.3 From 497e1b3f6b6d3cf2206d15687eb7bfa0ab0e968d Mon Sep 17 00:00:00 2001 From: Amitoj Kaur Chawla Date: Wed, 27 Jan 2016 15:44:09 -0800 Subject: Input: cap11xx - add missing of_node_put for_each_child_of_node performs an of_node_get on each iteration, so to break out of the loop an of_node_put is required. Found using Coccinelle. Signed-off-by: Amitoj Kaur Chawla Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/cap11xx.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c index 378db10001df..4401be225d64 100644 --- a/drivers/input/keyboard/cap11xx.c +++ b/drivers/input/keyboard/cap11xx.c @@ -304,8 +304,10 @@ static int cap11xx_init_leds(struct device *dev, led->cdev.brightness = LED_OFF; error = of_property_read_u32(child, "reg", ®); - if (error != 0 || reg >= num_leds) + if (error != 0 || reg >= num_leds) { + of_node_put(child); return -EINVAL; + } led->reg = reg; led->priv = priv; @@ -313,8 +315,10 @@ static int cap11xx_init_leds(struct device *dev, INIT_WORK(&led->work, cap11xx_led_work); error = devm_led_classdev_register(dev, &led->cdev); - if (error) + if (error) { + of_node_put(child); return error; + } priv->num_leds++; led++; -- cgit v1.2.3 From 015bb5e134544492d840cee17d7442194cfb0fe4 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Sat, 16 Jan 2016 10:35:47 -0800 Subject: Input: serio - drop warnings in case of EPROBE_DEFER from serio_find_driver() Now serio_find_driver() will print warnings in case device_attach() returns -EPROBE_DEFER. Those warnings are obsolete, in genral, because: - DD core can report the same if required - since commit 013c074f8642 ("PM / sleep: prohibit devices probing during suspend/hibernation") the devices probing is prohibited during System suspend and deferred device will be carefully reprobed once Resume is finished. Hence, drop warnings in case of EPROBE_DEFER from serio_find_driver(). Signed-off-by: Grygorii Strashko Acked-by: Rafael J. Wysocki Signed-off-by: Dmitry Torokhov --- drivers/input/serio/serio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 8f828975ab10..1ca7f551e2da 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -134,7 +134,7 @@ static void serio_find_driver(struct serio *serio) int error; error = device_attach(&serio->dev); - if (error < 0) + if (error < 0 && error != -EPROBE_DEFER) dev_warn(&serio->dev, "device_attach() failed for %s (%s), error: %d\n", serio->phys, serio->name, error); -- cgit v1.2.3 From d4f1b06d685d11ebdaccf11c0db1cb3c78736862 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Sat, 16 Jan 2016 10:04:49 -0800 Subject: Input: vmmouse - fix absolute device registration We should set device's capabilities first, and then register it, otherwise various handlers already present in the kernel will not be able to connect to the device. Reported-by: Lauri Kasanen Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/vmmouse.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c index e272f06258ce..a3f0f5a47490 100644 --- a/drivers/input/mouse/vmmouse.c +++ b/drivers/input/mouse/vmmouse.c @@ -458,8 +458,6 @@ int vmmouse_init(struct psmouse *psmouse) priv->abs_dev = abs_dev; psmouse->private = priv; - input_set_capability(rel_dev, EV_REL, REL_WHEEL); - /* Set up and register absolute device */ snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); @@ -475,10 +473,6 @@ int vmmouse_init(struct psmouse *psmouse) abs_dev->id.version = psmouse->model; abs_dev->dev.parent = &psmouse->ps2dev.serio->dev; - error = input_register_device(priv->abs_dev); - if (error) - goto init_fail; - /* Set absolute device capabilities */ input_set_capability(abs_dev, EV_KEY, BTN_LEFT); input_set_capability(abs_dev, EV_KEY, BTN_RIGHT); @@ -488,6 +482,13 @@ int vmmouse_init(struct psmouse *psmouse) input_set_abs_params(abs_dev, ABS_X, 0, VMMOUSE_MAX_X, 0, 0); input_set_abs_params(abs_dev, ABS_Y, 0, VMMOUSE_MAX_Y, 0, 0); + error = input_register_device(priv->abs_dev); + if (error) + goto init_fail; + + /* Add wheel capability to the relative device */ + input_set_capability(rel_dev, EV_REL, REL_WHEEL); + psmouse->protocol_handler = vmmouse_process_byte; psmouse->disconnect = vmmouse_disconnect; psmouse->reconnect = vmmouse_reconnect; -- cgit v1.2.3 From f785d98711925aceb198fb96abd786fd19fad657 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 22 Jan 2016 17:35:26 +0000 Subject: drm/amdgpu: fix non-ANSI declaration of amdgpu_amdkfd_gfx_*_get_functions() amdgpu_amdkfd_gfx_7_get_functions and amdgpu_amdkfd_gfx_8_0_get_functions have no parameters, so use the normal void parameter convention to make them match their prototypes in the header file drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h Signed-off-by: Colin Ian King Signed-off-by: Oded Gabbay --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c index 0e1376317683..362bedc9e507 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c @@ -154,7 +154,7 @@ static const struct kfd2kgd_calls kfd2kgd = { .get_fw_version = get_fw_version }; -struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions() +struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void) { return (struct kfd2kgd_calls *)&kfd2kgd; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c index 79fa5c7de856..04b744d64b57 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c @@ -115,7 +115,7 @@ static const struct kfd2kgd_calls kfd2kgd = { .get_fw_version = get_fw_version }; -struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions() +struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void) { return (struct kfd2kgd_calls *)&kfd2kgd; } -- cgit v1.2.3 From 642f0f2a1563b5ab6f5de896f602177ac1f06652 Mon Sep 17 00:00:00 2001 From: Amitoj Kaur Chawla Date: Mon, 25 Jan 2016 23:03:57 +0530 Subject: drm/amdkfd: Remove unnecessary cast in kfree Remove an unnecassary cast in the argument to kfree. Found using Coccinelle. The semantic patch used to find this is as follows: // @@ type T; expression *f; @@ - kfree((T *)(f)); + kfree(f); // Signed-off-by: Amitoj Kaur Chawla Signed-off-by: Oded Gabbay --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 9be007081b72..a902ae037398 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -194,7 +194,7 @@ static void kfd_process_wq_release(struct work_struct *work) kfree(p); - kfree((void *)work); + kfree(work); } static void kfd_process_destroy_delayed(struct rcu_head *rcu) -- cgit v1.2.3 From 4dc236c31733f5d2a3872c88cf12f607d7d36905 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:16 +0100 Subject: mlxsw: spectrum: Handle port leaving LAG while bridged It is possible for a user to remove a port from a LAG device, while the LAG device or VLAN devices on top of it are bridged. In these cases, bridge's teardown sequence is never issued, so we need to take care of it ourselves. When LAG's unlinking event is received by port netdev: 1) Traverse its vPorts list and make those member in a bridge leave it. They will be deleted later by LAG code. 2) Make the port netdev itself leave its bridge if member in one. Fixes: 0d65fc13042f ("mlxsw: spectrum: Implement LAG port join/leave") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 30 +++++++++++++++++++--- drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 1 + .../ethernet/mellanox/mlxsw/spectrum_switchdev.c | 8 ++++++ 3 files changed, 36 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index ce6845d534a8..637a9d72fd93 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2200,10 +2200,14 @@ err_col_port_enable: return err; } +static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport, + struct net_device *br_dev); + static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *lag_dev) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + struct mlxsw_sp_port *mlxsw_sp_vport; struct mlxsw_sp_upper *lag; u16 lag_id = mlxsw_sp_port->lag_id; int err; @@ -2220,6 +2224,29 @@ static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port, if (err) return err; + /* In case we leave a LAG device that has bridges built on top, + * then their teardown sequence is never issued and we need to + * invoke the necessary cleanup routines ourselves. + */ + list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list, + vport.list) { + struct net_device *br_dev; + + if (!mlxsw_sp_vport->bridged) + continue; + + br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport); + mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev); + } + + if (mlxsw_sp_port->bridged) { + mlxsw_sp_port_active_vlans_del(mlxsw_sp_port); + mlxsw_sp_port_bridge_leave(mlxsw_sp_port); + + if (lag->ref_count == 1) + mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL); + } + if (lag->ref_count == 1) { err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id); if (err) @@ -2272,9 +2299,6 @@ static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port, return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled); } -static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport, - struct net_device *br_dev); - static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *vlan_dev) { diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index a23dc610d259..df279fc81c2e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -254,5 +254,6 @@ int mlxsw_sp_port_kill_vid(struct net_device *dev, __be16 __always_unused proto, u16 vid); int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid, bool set, bool only_uc); +void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port); #endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 45479ef5bcf4..e4a3bd49069f 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -936,6 +936,14 @@ static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, vlan->vid_begin, vlan->vid_end, false); } +void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port) +{ + u16 vid; + + for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) + __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false); +} + static int mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port, const struct switchdev_obj_port_fdb *fdb) -- cgit v1.2.3 From 419332713581f0cbec6414f5e779afb79ddee3dd Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:17 +0100 Subject: mlxsw: reg: Add the Switch Filtering DB Flush register When removing a net device from a bridge we should flush the FDB entries associated with this net device. Up until now, we relied upon bridge code to do that for us, but it is possible for user to prevent hardware from syncing with the software bridge (learning_sync=0), so we need to flush overselves. Add the Switch Filtering DB Flush (SFDF) register that is used to flush FDB entries according to different parameters (per-port, per-FID etc). Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 88 +++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index 0c5237264e3e..815e5df06d8c 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -1044,6 +1044,92 @@ static inline void mlxsw_reg_sftr_pack(char *payload, mlxsw_reg_sftr_port_mask_set(payload, port, 1); } +/* SFDF - Switch Filtering DB Flush + * -------------------------------- + * The switch filtering DB flush register is used to flush the FDB. + * Note that FDB notifications are flushed as well. + */ +#define MLXSW_REG_SFDF_ID 0x2013 +#define MLXSW_REG_SFDF_LEN 0x14 + +static const struct mlxsw_reg_info mlxsw_reg_sfdf = { + .id = MLXSW_REG_SFDF_ID, + .len = MLXSW_REG_SFDF_LEN, +}; + +/* reg_sfdf_swid + * Switch partition ID. + * Access: Index + */ +MLXSW_ITEM32(reg, sfdf, swid, 0x00, 24, 8); + +enum mlxsw_reg_sfdf_flush_type { + MLXSW_REG_SFDF_FLUSH_PER_SWID, + MLXSW_REG_SFDF_FLUSH_PER_FID, + MLXSW_REG_SFDF_FLUSH_PER_PORT, + MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID, + MLXSW_REG_SFDF_FLUSH_PER_LAG, + MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID, +}; + +/* reg_sfdf_flush_type + * Flush type. + * 0 - All SWID dynamic entries are flushed. + * 1 - All FID dynamic entries are flushed. + * 2 - All dynamic entries pointing to port are flushed. + * 3 - All FID dynamic entries pointing to port are flushed. + * 4 - All dynamic entries pointing to LAG are flushed. + * 5 - All FID dynamic entries pointing to LAG are flushed. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, flush_type, 0x04, 28, 4); + +/* reg_sfdf_flush_static + * Static. + * 0 - Flush only dynamic entries. + * 1 - Flush both dynamic and static entries. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, flush_static, 0x04, 24, 1); + +static inline void mlxsw_reg_sfdf_pack(char *payload, + enum mlxsw_reg_sfdf_flush_type type) +{ + MLXSW_REG_ZERO(sfdf, payload); + mlxsw_reg_sfdf_flush_type_set(payload, type); + mlxsw_reg_sfdf_flush_static_set(payload, true); +} + +/* reg_sfdf_fid + * FID to flush. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, fid, 0x0C, 0, 16); + +/* reg_sfdf_system_port + * Port to flush. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, system_port, 0x0C, 0, 16); + +/* reg_sfdf_port_fid_system_port + * Port to flush, pointed to by FID. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, port_fid_system_port, 0x08, 0, 16); + +/* reg_sfdf_lag_id + * LAG ID to flush. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, lag_id, 0x0C, 0, 10); + +/* reg_sfdf_lag_fid_lag_id + * LAG ID to flush, pointed to by FID. + * Access: RW + */ +MLXSW_ITEM32(reg, sfdf, lag_fid_lag_id, 0x08, 0, 10); + /* SLDR - Switch LAG Descriptor Register * ----------------------------------------- * The switch LAG descriptor register is populated by LAG descriptors. @@ -3121,6 +3207,8 @@ static inline const char *mlxsw_reg_id_str(u16 reg_id) return "SFGC"; case MLXSW_REG_SFTR_ID: return "SFTR"; + case MLXSW_REG_SFDF_ID: + return "SFDF"; case MLXSW_REG_SLDR_ID: return "SLDR"; case MLXSW_REG_SLCR_ID: -- cgit v1.2.3 From 039c49a6e6cf673a2bec572b3360209ec418a152 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:18 +0100 Subject: mlxsw: spectrum: Flush FDB when leaving bridge As explained in previous commit, we should always take care of flushing the FDB in the driver and not rely on bridge code. We need to distinguish between two cases with regards to LAG: 1) Port is leaving LAG while LAG is bridged (or VLAN devices on top of it). In this case don't flush the FDB entries pointing to the LAG ID, as this will affect other ports still member in the LAG. Only flush the FDB when the last port in the LAG is leaving the bridge. 2) LAG device is leaving the bridge. In this case the CHANGEUPPER event is simply propagated to each member port, so make each port flush the FDB in its turn. Note that emptying a bridged LAG from ports creates an inconsistency between hardware and software. A user who later (< ageing_time) re-populates the LAG won't have any FDB entries pointing to the LAG ID in hardware, but they will be present in the software bridge's FDB. Currently there is no good solution to this problem, but this will be addressed by us in the future. In order to optimize the flushing process, flush by port or LAG ID if there are no VLAN interfaces on top of the port. Otherwise, flush using (Port / LAG ID, FID=VID} for each of the lower 4K FIDs. In the case of VLAN device simply flush using {Port / LAG ID, vFID} with the vFID to which the VLAN device is mapped to. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 137 +++++++++++++++++++++++-- 1 file changed, 129 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 637a9d72fd93..217856bdd400 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -1979,6 +1979,115 @@ static struct mlxsw_driver mlxsw_sp_driver = { .profile = &mlxsw_sp_config_profile, }; +static int +mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char sfdf_pl[MLXSW_REG_SFDF_LEN]; + + mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT); + mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port); + + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); +} + +static int +mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port, + u16 fid) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char sfdf_pl[MLXSW_REG_SFDF_LEN]; + + mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID); + mlxsw_reg_sfdf_fid_set(sfdf_pl, fid); + mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, + mlxsw_sp_port->local_port); + + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); +} + +static int +mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char sfdf_pl[MLXSW_REG_SFDF_LEN]; + + mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG); + mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id); + + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); +} + +static int +mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port, + u16 fid) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char sfdf_pl[MLXSW_REG_SFDF_LEN]; + + mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID); + mlxsw_reg_sfdf_fid_set(sfdf_pl, fid); + mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id); + + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); +} + +static int +__mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port) +{ + int err, last_err = 0; + u16 vid; + + for (vid = 1; vid < VLAN_N_VID - 1; vid++) { + err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid); + if (err) + last_err = err; + } + + return last_err; +} + +static int +__mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port) +{ + int err, last_err = 0; + u16 vid; + + for (vid = 1; vid < VLAN_N_VID - 1; vid++) { + err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid); + if (err) + last_err = err; + } + + return last_err; +} + +static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port) +{ + if (!list_empty(&mlxsw_sp_port->vports_list)) + if (mlxsw_sp_port->lagged) + return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port); + else + return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port); + else + if (mlxsw_sp_port->lagged) + return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port); + else + return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port); +} + +static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport) +{ + u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport); + u16 fid = mlxsw_sp_vfid_to_fid(vfid); + + if (mlxsw_sp_vport->lagged) + return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport, + fid); + else + return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid); +} + static bool mlxsw_sp_port_dev_check(const struct net_device *dev) { return dev->netdev_ops == &mlxsw_sp_port_netdev_ops; @@ -2006,10 +2115,14 @@ static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port) return 0; } -static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port) +static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, + bool flush_fdb) { struct net_device *dev = mlxsw_sp_port->dev; + if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port)) + netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n"); + mlxsw_sp_port->learning = 0; mlxsw_sp_port->learning_sync = 0; mlxsw_sp_port->uc_flood = 0; @@ -2201,7 +2314,8 @@ err_col_port_enable: } static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport, - struct net_device *br_dev); + struct net_device *br_dev, + bool flush_fdb); static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *lag_dev) @@ -2236,18 +2350,20 @@ static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port, continue; br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport); - mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev); + mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false); } if (mlxsw_sp_port->bridged) { mlxsw_sp_port_active_vlans_del(mlxsw_sp_port); - mlxsw_sp_port_bridge_leave(mlxsw_sp_port); + mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false); if (lag->ref_count == 1) mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL); } if (lag->ref_count == 1) { + if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port)) + netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n"); err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id); if (err) return err; @@ -2336,7 +2452,7 @@ static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *br_dev; br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport); - mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev); + mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true); } mlxsw_sp_vport->dev = mlxsw_sp_port->dev; @@ -2398,7 +2514,8 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev, } mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev); } else { - err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port); + err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port, + true); mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev); if (err) { netdev_err(dev, "Failed to leave bridge\n"); @@ -2565,7 +2682,8 @@ static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp, } static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport, - struct net_device *br_dev) + struct net_device *br_dev, + bool flush_fdb) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); @@ -2628,6 +2746,9 @@ static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport, goto err_vport_flood_set; } + if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport)) + netdev_err(dev, "Failed to flush FDB\n"); + /* Switch between the vFIDs and destroy the old one if needed. */ new_vfid->nr_vports++; mlxsw_sp_vport->vport.vfid = new_vfid; @@ -2801,7 +2922,7 @@ static int mlxsw_sp_netdevice_vport_event(struct net_device *dev, if (!mlxsw_sp_vport) return NOTIFY_DONE; err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, - upper_dev); + upper_dev, true); if (err) { netdev_err(dev, "Failed to leave bridge\n"); return NOTIFY_BAD; -- cgit v1.2.3 From 9cb026ebb8ab76829a8d8e4bbd057168ac38fb86 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:19 +0100 Subject: mlxsw: spectrum: Don't forward packets when STP state is DISABLED When STP state is set to DISABLED the port is assumed to be inactive, but currently we forward packets ingressing through it. Instead, set the port's STP state in hardware to DISCARDING, which means it doesn't forward packets or perform any learning, but it does trap control packets. However, these packets will be dropped by bridge code, which results in the expected behavior. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index e4a3bd49069f..5087e742dceb 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -124,7 +124,6 @@ static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, int err; switch (state) { - case BR_STATE_DISABLED: /* fall-through */ case BR_STATE_FORWARDING: spms_state = MLXSW_REG_SPMS_STATE_FORWARDING; break; @@ -132,6 +131,7 @@ static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, case BR_STATE_LEARNING: spms_state = MLXSW_REG_SPMS_STATE_LEARNING; break; + case BR_STATE_DISABLED: /* fall-through */ case BR_STATE_BLOCKING: spms_state = MLXSW_REG_SPMS_STATE_DISCARDING; break; -- cgit v1.2.3 From 454911333b1d86e1d58a557be271bc6b7e9e7f10 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:20 +0100 Subject: mlxsw: spectrum: Disable learning according to STP state When port is put into LISTENING state it shouldn't populate the FDB, so set the port's STP state in hardware to DISCARDING instead of LEARNING. It will therefore keep listening to BPDU packets, but discard other non-control packets and won't perform any learning. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 5087e742dceb..5e6095dd7d97 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -127,10 +127,10 @@ static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, case BR_STATE_FORWARDING: spms_state = MLXSW_REG_SPMS_STATE_FORWARDING; break; - case BR_STATE_LISTENING: /* fall-through */ case BR_STATE_LEARNING: spms_state = MLXSW_REG_SPMS_STATE_LEARNING; break; + case BR_STATE_LISTENING: /* fall-through */ case BR_STATE_DISABLED: /* fall-through */ case BR_STATE_BLOCKING: spms_state = MLXSW_REG_SPMS_STATE_DISCARDING; -- cgit v1.2.3 From 45827d780aab533a777f965798018118b373cc0b Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:21 +0100 Subject: mlxsw: spectrum: Notify bridge's FDB only based on learning_sync When we disable learning on bridge port we should still update the software bridge's FDB when entry pointing to this bridge port is aged-out. We can otherwise have an inconsistency between software and hardware tables. Fixes: 8a1ab5d76639 ("mlxsw: spectrum: Implement FDB add/remove/dump for LAG") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 5e6095dd7d97..e1cbc59fced3 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1202,14 +1202,14 @@ static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump, }; -static void mlxsw_sp_fdb_call_notifiers(bool learning, bool learning_sync, - bool adding, char *mac, u16 vid, +static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding, + char *mac, u16 vid, struct net_device *dev) { struct switchdev_notifier_fdb_info info; unsigned long notifier_type; - if (learning && learning_sync) { + if (learning_sync) { info.addr = mac; info.vid = vid; notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL; @@ -1265,8 +1265,7 @@ do_fdb_op: if (!do_notification) return; - mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning, - mlxsw_sp_port->learning_sync, + mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac, vid, mlxsw_sp_port->dev); return; @@ -1327,9 +1326,8 @@ do_fdb_op: if (!do_notification) return; - mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning, - mlxsw_sp_port->learning_sync, - adding, mac, vid, + mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac, + vid, mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev); return; -- cgit v1.2.3 From 004f85ea8258a2ffecdeecd154bdbe08409c13a4 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:22 +0100 Subject: mlxsw: spectrum: Don't report VLAN for 802.1D FDB entries When dumping the hardware FDB we should report entries pointing to VLAN devices with VLAN 0, as packets coming into the bridge are untagged. Likewise, pass FDB_{ADD,DEL} notifications with VLAN 0 for these devices. Fixes: 54a732018d8e ("mlxsw: spectrum: Adjust switchdev ops for VLAN devices") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- .../ethernet/mellanox/mlxsw/spectrum_switchdev.c | 31 +++++++++++----------- 1 file changed, 16 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index e1cbc59fced3..26e85b759e89 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1051,7 +1051,7 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, switchdev_obj_dump_cb_t *cb) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; - u16 vport_vid = 0, vport_fid = 0; + u16 vport_fid = 0; char *sfd_pl; char mac[ETH_ALEN]; u16 fid; @@ -1072,7 +1072,6 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port); vport_fid = mlxsw_sp_vfid_to_fid(tmp); - vport_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port); } mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0); @@ -1096,12 +1095,13 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid, &local_port); if (local_port == mlxsw_sp_port->local_port) { - if (vport_fid && vport_fid != fid) - continue; - else if (vport_fid) - fdb->vid = vport_vid; - else + if (vport_fid && vport_fid == fid) + fdb->vid = 0; + else if (!vport_fid && + !mlxsw_sp_fid_is_vfid(fid)) fdb->vid = fid; + else + continue; ether_addr_copy(fdb->addr, mac); fdb->ndm_state = NUD_REACHABLE; err = cb(&fdb->obj); @@ -1114,12 +1114,13 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, mac, &fid, &lag_id); if (mlxsw_sp_port == mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) { - if (vport_fid && vport_fid != fid) - continue; - else if (vport_fid) - fdb->vid = vport_vid; - else + if (vport_fid && vport_fid == fid) + fdb->vid = 0; + else if (!vport_fid && + !mlxsw_sp_fid_is_vfid(fid)) fdb->vid = fid; + else + continue; ether_addr_copy(fdb->addr, mac); fdb->ndm_state = NUD_REACHABLE; err = cb(&fdb->obj); @@ -1245,7 +1246,7 @@ static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n"); goto just_remove; } - vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); + vid = 0; /* Override the physical port with the vPort. */ mlxsw_sp_port = mlxsw_sp_vport; } else { @@ -1305,8 +1306,8 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, goto just_remove; } - vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); - lag_vid = vid; + lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); + vid = 0; /* Override the physical port with the vPort. */ mlxsw_sp_port = mlxsw_sp_vport; } else { -- cgit v1.2.3 From e43aca22ed039af235acc2ee0384f943c1fbfe83 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:23 +0100 Subject: mlxsw: spectrum: Use correct netdev when notifying bridge LAG FDB entries pointing to VLAN devices should be reported to the bridge with the matching VLAN device and not the underlying LAG device. Fixes: aac78a440887 ("mlxsw: spectrum: Adjust FDB notifications for VLAN devices") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 26e85b759e89..3102c1422262 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1281,6 +1281,7 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, bool adding) { struct mlxsw_sp_port *mlxsw_sp_port; + struct net_device *dev; char mac[ETH_ALEN]; u16 lag_vid = 0; u16 lag_id; @@ -1307,10 +1308,12 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, } lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); + dev = mlxsw_sp_vport->dev; vid = 0; /* Override the physical port with the vPort. */ mlxsw_sp_port = mlxsw_sp_vport; } else { + dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev; vid = fid; } @@ -1328,8 +1331,7 @@ do_fdb_op: if (!do_notification) return; mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac, - vid, - mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev); + vid, dev); return; just_remove: -- cgit v1.2.3 From 304f51584f4591789539c0d37fc359bc129a4ff0 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:24 +0100 Subject: mlxsw: spectrum: Dump LAG FDB records only once LAG FDB records can only point to LAG devices or VLAN devices configured on top of them. Therefore, when dumping the FDB we shouldn't associate these records with the underlying physical ports. Fixes: 8a1ab5d76639 ("mlxsw: spectrum: Implement FDB add/remove/dump for LAG") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 3102c1422262..2b8b3745eaf0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1048,7 +1048,8 @@ static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, struct switchdev_obj_port_fdb *fdb, - switchdev_obj_dump_cb_t *cb) + switchdev_obj_dump_cb_t *cb, + struct net_device *orig_dev) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; u16 vport_fid = 0; @@ -1114,6 +1115,12 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, mac, &fid, &lag_id); if (mlxsw_sp_port == mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) { + /* LAG records can only point to LAG + * devices or VLAN devices on top. + */ + if (!netif_is_lag_master(orig_dev) && + !is_vlan_dev(orig_dev)) + continue; if (vport_fid && vport_fid == fid) fdb->vid = 0; else if (!vport_fid && @@ -1185,7 +1192,8 @@ static int mlxsw_sp_port_obj_dump(struct net_device *dev, break; case SWITCHDEV_OBJ_ID_PORT_FDB: err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port, - SWITCHDEV_OBJ_PORT_FDB(obj), cb); + SWITCHDEV_OBJ_PORT_FDB(obj), cb, + obj->orig_dev); break; default: err = -EOPNOTSUPP; -- cgit v1.2.3 From 3f47f867814cdb08cd43d4b82f95bfde4a9ae579 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:25 +0100 Subject: mlxsw: spectrum: Compare local ports instead of pointers When dumping the FDB we can't compare the actual pointers of the ports structs, as it's possible the struct represents a vPort instead of the underlying physical port. Solve this by comparing the local port number instead, as it's shared between the physical ports and all the vPorts on top of him. Fixes: 54a732018d8e ("mlxsw: spectrum: Adjust switchdev ops for VLAN devices") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 2b8b3745eaf0..f2ab7cd09cf3 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1052,6 +1052,7 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *orig_dev) { struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + struct mlxsw_sp_port *tmp; u16 vport_fid = 0; char *sfd_pl; char mac[ETH_ALEN]; @@ -1113,8 +1114,9 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG: mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i, mac, &fid, &lag_id); - if (mlxsw_sp_port == - mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) { + tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); + if (tmp && tmp->local_port == + mlxsw_sp_port->local_port) { /* LAG records can only point to LAG * devices or VLAN devices on top. */ -- cgit v1.2.3 From bbeeda27abc516af51ddd93c555b6324559dbb3b Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:20:26 +0100 Subject: mlxsw: reg: Use correct offset in field definiton The rx_lane, tx_lane and module fields in the PMLP register don't have an additional offset besides the base one (0x04), so set it to 0x00. Fixes: 4ec14b7634b2 ("mlxsw: Add interface to access registers and process events") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index 815e5df06d8c..bb77e2207804 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -1787,20 +1787,20 @@ MLXSW_ITEM32(reg, pmlp, width, 0x00, 0, 8); * Module number. * Access: RW */ -MLXSW_ITEM32_INDEXED(reg, pmlp, module, 0x04, 0, 8, 0x04, 0, false); +MLXSW_ITEM32_INDEXED(reg, pmlp, module, 0x04, 0, 8, 0x04, 0x00, false); /* reg_pmlp_tx_lane * Tx Lane. When rxtx field is cleared, this field is used for Rx as well. * Access: RW */ -MLXSW_ITEM32_INDEXED(reg, pmlp, tx_lane, 0x04, 16, 2, 0x04, 16, false); +MLXSW_ITEM32_INDEXED(reg, pmlp, tx_lane, 0x04, 16, 2, 0x04, 0x00, false); /* reg_pmlp_rx_lane * Rx Lane. When rxtx field is cleared, this field is ignored and Rx lane is * equal to Tx lane. * Access: RW */ -MLXSW_ITEM32_INDEXED(reg, pmlp, rx_lane, 0x04, 24, 2, 0x04, 24, false); +MLXSW_ITEM32_INDEXED(reg, pmlp, rx_lane, 0x04, 24, 2, 0x04, 0x00, false); static inline void mlxsw_reg_pmlp_pack(char *payload, u8 local_port) { -- cgit v1.2.3 From c731f0e3493cc9031a0aceea6a50c70beed23e6d Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:12 +0100 Subject: net: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Signed-off-by: David S. Miller --- drivers/net/ethernet/ezchip/Kconfig | 1 + drivers/net/phy/Kconfig | 1 + 2 files changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/ezchip/Kconfig b/drivers/net/ethernet/ezchip/Kconfig index 48ecbc8aaaea..b423ad380b6a 100644 --- a/drivers/net/ethernet/ezchip/Kconfig +++ b/drivers/net/ethernet/ezchip/Kconfig @@ -18,6 +18,7 @@ if NET_VENDOR_EZCHIP config EZCHIP_NPS_MANAGEMENT_ENET tristate "EZchip NPS management enet support" depends on OF_IRQ && OF_NET + depends on HAS_IOMEM ---help--- Simple LAN device for debug or management purposes. Device supports interrupts for RX and TX(completion). diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 60994a83a0d6..f0a77020037a 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -186,6 +186,7 @@ config MDIO_GPIO config MDIO_OCTEON tristate "Support for MDIO buses on Octeon and ThunderX SOCs" depends on 64BIT + depends on HAS_IOMEM help This module provides a driver for the Octeon and ThunderX MDIO -- cgit v1.2.3 From 6ed742363b9c3d1d038f013591d57a606ae2c261 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Tue, 26 Jan 2016 15:12:30 +0100 Subject: of: of_mdio: Ensure mdio device is a PHY of_phy_find_device() is used to find the phy device associated with a device node. It is expected the node is for a PHY device, but in fact it could of been probed as a generic MDIO device. Ensure the device is a PHY before returning it. Fixes: a9049e0c513c ("mdio: Add support for mdio drivers.") Reported-by: Aaro Koskinen Reported-by: Olof Johansson Signed-off-by: Andrew Lunn Tested-by: Aaro Koskinen Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 86829f8064a6..b5aa004a24b6 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -256,11 +256,19 @@ static int of_phy_match(struct device *dev, void *phy_np) struct phy_device *of_phy_find_device(struct device_node *phy_np) { struct device *d; + struct mdio_device *mdiodev; + if (!phy_np) return NULL; d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match); - return d ? to_phy_device(d) : NULL; + if (d) { + mdiodev = to_mdio_device(d); + if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) + return to_phy_device(d); + } + + return NULL; } EXPORT_SYMBOL(of_phy_find_device); -- cgit v1.2.3 From 3b89624ab54b9dc2d92fc08ce2670e5f19ad8ec8 Mon Sep 17 00:00:00 2001 From: Nicolas Schichan Date: Tue, 26 Jan 2016 16:12:35 +0100 Subject: net: mv643xx_eth: fix packet corruption with TSO and tiny unaligned packets. The code in txq_put_data() would use txq->tx_curr_desc to index the tso_hdrs/tso_hdrs_dma buffers, for less than 8 bytes unaligned fragments, which is already moved to the next descriptor at the beginning of the function. If that fragment was the last of the the skb, the next skb would use that same space to place the ip headers, overwritting that small fragment data. Fixes: 91986fd3d335 (net: mv643xx_eth: Ensure proper data alignment in TSO TX path) Signed-off-by: Nicolas Schichan Reviewed-by: Philipp Kirchhofer Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mv643xx_eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index a0c03834a2f7..55831188bc32 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -762,10 +762,10 @@ txq_put_data_tso(struct net_device *dev, struct tx_queue *txq, if (length <= 8 && (uintptr_t)data & 0x7) { /* Copy unaligned small data fragment to TSO header data area */ - memcpy(txq->tso_hdrs + txq->tx_curr_desc * TSO_HEADER_SIZE, + memcpy(txq->tso_hdrs + tx_index * TSO_HEADER_SIZE, data, length); desc->buf_ptr = txq->tso_hdrs_dma - + txq->tx_curr_desc * TSO_HEADER_SIZE; + + tx_index * TSO_HEADER_SIZE; } else { /* Alignment is okay, map buffer and hand off to hardware */ txq->tx_desc_mapping[tx_index] = DESC_DMA_MAP_SINGLE; -- cgit v1.2.3 From 7d0105b5334b9722b7d33acad613096dfcf3330e Mon Sep 17 00:00:00 2001 From: Malcolm Crossley Date: Tue, 26 Jan 2016 17:12:44 +0000 Subject: xen-netfront: request Tx response events more often Trying to batch Tx response events results in poor performance because this delays freeing the transmitted skbs. Instead use the standard RING_FINAL_CHECK_FOR_RESPONSES() macro to be notified once the next Tx response is placed on the ring. Signed-off-by: Malcolm Crossley Signed-off-by: David Vrabel Signed-off-by: David S. Miller --- drivers/net/xen-netfront.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index d6abf191122a..96ccd4e943db 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -364,6 +364,7 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue) RING_IDX cons, prod; unsigned short id; struct sk_buff *skb; + bool more_to_do; BUG_ON(!netif_carrier_ok(queue->info->netdev)); @@ -398,18 +399,8 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue) queue->tx.rsp_cons = prod; - /* - * Set a new event, then check for race with update of tx_cons. - * Note that it is essential to schedule a callback, no matter - * how few buffers are pending. Even if there is space in the - * transmit ring, higher layers may be blocked because too much - * data is outstanding: in such cases notification from Xen is - * likely to be the only kick that we'll get. - */ - queue->tx.sring->rsp_event = - prod + ((queue->tx.sring->req_prod - prod) >> 1) + 1; - mb(); /* update shared area */ - } while ((cons == prod) && (prod != queue->tx.sring->rsp_prod)); + RING_FINAL_CHECK_FOR_RESPONSES(&queue->tx, more_to_do); + } while (more_to_do); xennet_maybe_wake_tx(queue); } -- cgit v1.2.3 From 4f2c6ae5c64c353fb1b0425e4747e5603feadba1 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 27 Jan 2016 15:16:43 +0100 Subject: switchdev: Require RTNL mutex to be held when sending FDB notifications When switchdev drivers process FDB notifications from the underlying device they resolve the netdev to which the entry points to and notify the bridge using the switchdev notifier. However, since the RTNL mutex is not held there is nothing preventing the netdev from disappearing in the middle, which will cause br_switchdev_event() to dereference a non-existing netdev. Make switchdev drivers hold the lock at the beginning of the notification processing session and release it once it ends, after notifying the bridge. Also, remove switchdev_mutex and fdb_lock, as they are no longer needed when RTNL mutex is held. Fixes: 03bf0c281234 ("switchdev: introduce switchdev notifier") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 1 - drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 8 +++----- drivers/net/ethernet/rocker/rocker.c | 2 ++ 3 files changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index df279fc81c2e..7f42eb1c320e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -120,7 +120,6 @@ struct mlxsw_sp { } fdb_notify; #define MLXSW_SP_DEFAULT_AGEING_TIME 300 u32 ageing_time; - struct mutex fdb_lock; /* Make sure FDB sessions are atomic. */ struct mlxsw_sp_upper master_bridge; struct mlxsw_sp_upper lags[MLXSW_SP_LAG_MAX]; }; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index f2ab7cd09cf3..e492ca2cdecd 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include "spectrum.h" @@ -1068,7 +1069,6 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, if (!sfd_pl) return -ENOMEM; - mutex_lock(&mlxsw_sp_port->mlxsw_sp->fdb_lock); if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { u16 tmp; @@ -1142,7 +1142,6 @@ static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT); out: - mutex_unlock(&mlxsw_sp_port->mlxsw_sp->fdb_lock); kfree(sfd_pl); return stored_err ? stored_err : err; } @@ -1393,7 +1392,7 @@ static void mlxsw_sp_fdb_notify_work(struct work_struct *work) mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work); - mutex_lock(&mlxsw_sp->fdb_lock); + rtnl_lock(); do { mlxsw_reg_sfn_pack(sfn_pl); err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); @@ -1406,7 +1405,7 @@ static void mlxsw_sp_fdb_notify_work(struct work_struct *work) mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); } while (num_rec); - mutex_unlock(&mlxsw_sp->fdb_lock); + rtnl_unlock(); kfree(sfn_pl); mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); @@ -1421,7 +1420,6 @@ static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); return err; } - mutex_init(&mlxsw_sp->fdb_lock); INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work); mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c index a4ab71d43e4e..166a7fc87e2f 100644 --- a/drivers/net/ethernet/rocker/rocker.c +++ b/drivers/net/ethernet/rocker/rocker.c @@ -3531,12 +3531,14 @@ static void rocker_port_fdb_learn_work(struct work_struct *work) info.addr = lw->addr; info.vid = lw->vid; + rtnl_lock(); if (learned && removing) call_switchdev_notifiers(SWITCHDEV_FDB_DEL, lw->rocker_port->dev, &info.info); else if (learned && !removing) call_switchdev_notifiers(SWITCHDEV_FDB_ADD, lw->rocker_port->dev, &info.info); + rtnl_unlock(); rocker_port_kfree(lw->trans, work); } -- cgit v1.2.3 From d791a8c60e9cbd1c4fecbc5c86ff59c7ffe137e8 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Wed, 27 Jan 2016 18:22:44 -0800 Subject: storvsc: Install the storvsc specific timeout handler for FC devices The default timeout routine used for FC transport is not suitable for FC devices managed by storvsc since FC devices managed by storvsc driver do not have an rport associated with them. Use the time out handler used for SCSI devices for FC devices as well. Signed-off-by: K. Y. Srinivasan Reviewed-by: Alex Ng Tested-by: Vivek Yadav Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- drivers/scsi/storvsc_drv.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 41c115c230d9..622f64a98a9e 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -42,6 +42,7 @@ #include #include #include +#include /* * All wire protocol details (storage protocol between the guest and the host) @@ -1770,6 +1771,11 @@ static int __init storvsc_drv_init(void) fc_transport_template = fc_attach_transport(&fc_transport_functions); if (!fc_transport_template) return -ENODEV; + + /* + * Install Hyper-V specific timeout handler. + */ + fc_transport_template->eh_timed_out = storvsc_eh_timed_out; #endif ret = vmbus_driver_register(&storvsc_drv); -- cgit v1.2.3 From 98441221708a092eb6d3d05142cf842a95aba152 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Wed, 27 Jan 2016 18:22:45 -0800 Subject: storvsc: Use the specified target ID in device lookup The current code assumes that there is only one target in device lookup. Fix this bug. This will alow us to correctly handle hot reomoval of LUNs. Signed-off-by: K. Y. Srinivasan Reviewed-by: Alex Ng Tested-by: Vivek Yadav Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- drivers/scsi/storvsc_drv.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 622f64a98a9e..132b16861954 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -478,19 +478,18 @@ struct hv_host_device { struct storvsc_scan_work { struct work_struct work; struct Scsi_Host *host; - uint lun; + u8 lun; + u8 tgt_id; }; static void storvsc_device_scan(struct work_struct *work) { struct storvsc_scan_work *wrk; - uint lun; struct scsi_device *sdev; wrk = container_of(work, struct storvsc_scan_work, work); - lun = wrk->lun; - sdev = scsi_device_lookup(wrk->host, 0, 0, lun); + sdev = scsi_device_lookup(wrk->host, 0, wrk->tgt_id, wrk->lun); if (!sdev) goto done; scsi_rescan_device(&sdev->sdev_gendev); @@ -541,7 +540,7 @@ static void storvsc_remove_lun(struct work_struct *work) if (!scsi_host_get(wrk->host)) goto done; - sdev = scsi_device_lookup(wrk->host, 0, 0, wrk->lun); + sdev = scsi_device_lookup(wrk->host, 0, wrk->tgt_id, wrk->lun); if (sdev) { scsi_remove_device(sdev); @@ -941,6 +940,7 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb, wrk->host = host; wrk->lun = vm_srb->lun; + wrk->tgt_id = vm_srb->target_id; INIT_WORK(&wrk->work, process_err_fn); schedule_work(&wrk->work); } -- cgit v1.2.3 From e4953910aee0c1a8f7f0fff598354948c2702900 Mon Sep 17 00:00:00 2001 From: "Woojung.Huh@microchip.com" Date: Wed, 27 Jan 2016 22:57:52 +0000 Subject: lan78xx: change to use updated phy-ignore-interrupts Update lan78xx to use patch of commit 4f2aaf7dd95b ("Merge branch 'fix-phy-ignore-interrupts'"). Signed-off-by: Woojung Huh Signed-off-by: David S. Miller --- drivers/net/usb/lan78xx.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 2ed53331bfb2..027ee373860e 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -36,7 +36,7 @@ #define DRIVER_AUTHOR "WOOJUNG HUH " #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" #define DRIVER_NAME "lan78xx" -#define DRIVER_VERSION "1.0.1" +#define DRIVER_VERSION "1.0.2" #define TX_TIMEOUT_JIFFIES (5 * HZ) #define THROTTLE_JIFFIES (HZ / 8) @@ -904,7 +904,6 @@ static int lan78xx_link_reset(struct lan78xx_net *dev) if (!phydev->link && dev->link_on) { dev->link_on = false; - netif_carrier_off(dev->net); /* reset MAC */ ret = lan78xx_read_reg(dev, MAC_CR, &buf); @@ -914,6 +913,8 @@ static int lan78xx_link_reset(struct lan78xx_net *dev) ret = lan78xx_write_reg(dev, MAC_CR, buf); if (unlikely(ret < 0)) return -EIO; + + phy_mac_interrupt(phydev, 0); } else if (phydev->link && !dev->link_on) { dev->link_on = true; @@ -953,7 +954,7 @@ static int lan78xx_link_reset(struct lan78xx_net *dev) ethtool_cmd_speed(&ecmd), ecmd.duplex, ladv, radv); ret = lan78xx_update_flowcontrol(dev, ecmd.duplex, ladv, radv); - netif_carrier_on(dev->net); + phy_mac_interrupt(phydev, 1); } return ret; @@ -1495,7 +1496,6 @@ done: static int lan78xx_mdio_init(struct lan78xx_net *dev) { int ret; - int i; dev->mdiobus = mdiobus_alloc(); if (!dev->mdiobus) { @@ -1511,10 +1511,6 @@ static int lan78xx_mdio_init(struct lan78xx_net *dev) snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", dev->udev->bus->busnum, dev->udev->devnum); - /* handle our own interrupt */ - for (i = 0; i < PHY_MAX_ADDR; i++) - dev->mdiobus->irq[i] = PHY_IGNORE_INTERRUPT; - switch (dev->devid & ID_REV_CHIP_ID_MASK_) { case 0x78000000: case 0x78500000: @@ -1558,6 +1554,16 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) return -EIO; } + /* Enable PHY interrupts. + * We handle our own interrupt + */ + ret = phy_read(phydev, LAN88XX_INT_STS); + ret = phy_write(phydev, LAN88XX_INT_MASK, + LAN88XX_INT_MASK_MDINTPIN_EN_ | + LAN88XX_INT_MASK_LINK_CHANGE_); + + phydev->irq = PHY_IGNORE_INTERRUPT; + ret = phy_connect_direct(dev->net, phydev, lan78xx_link_status_change, PHY_INTERFACE_MODE_GMII); @@ -1580,14 +1586,6 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) SUPPORTED_Pause | SUPPORTED_Asym_Pause); genphy_config_aneg(phydev); - /* Workaround to enable PHY interrupt. - * phy_start_interrupts() is API for requesting and enabling - * PHY interrupt. However, USB-to-Ethernet device can't use - * request_irq() called in phy_start_interrupts(). - * Set PHY to PHY_HALTED and call phy_start() - * to make a call to phy_enable_interrupts() - */ - phy_stop(phydev); phy_start(phydev); netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); -- cgit v1.2.3 From a0db7d10b76e98df0cb5d4ee1ec5b8e5fbe2038c Mon Sep 17 00:00:00 2001 From: "Woojung.Huh@microchip.com" Date: Wed, 27 Jan 2016 22:57:53 +0000 Subject: lan78xx: Add to handle mux control per chip id Depends on chip, some EEPROM pins are muxed with LED function. Disable & restore LED function to access EEPROM. Signed-off-by: Woojung Huh Signed-off-by: David S. Miller --- drivers/net/usb/lan78xx.c | 98 ++++++++++++++++++++++++++++++++++------------- 1 file changed, 71 insertions(+), 27 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 027ee373860e..650e71604d86 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -462,32 +462,53 @@ static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { u32 val; + u32 saved; int i, ret; + int retval; - ret = lan78xx_eeprom_confirm_not_busy(dev); - if (ret) - return ret; + /* depends on chip, some EEPROM pins are muxed with LED function. + * disable & restore LED function to access EEPROM. + */ + ret = lan78xx_read_reg(dev, HW_CFG, &val); + saved = val; + if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) { + val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); + ret = lan78xx_write_reg(dev, HW_CFG, val); + } + + retval = lan78xx_eeprom_confirm_not_busy(dev); + if (retval) + return retval; for (i = 0; i < length; i++) { val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; val |= (offset & E2P_CMD_EPC_ADDR_MASK_); ret = lan78xx_write_reg(dev, E2P_CMD, val); - if (unlikely(ret < 0)) - return -EIO; + if (unlikely(ret < 0)) { + retval = -EIO; + goto exit; + } - ret = lan78xx_wait_eeprom(dev); - if (ret < 0) - return ret; + retval = lan78xx_wait_eeprom(dev); + if (retval < 0) + goto exit; ret = lan78xx_read_reg(dev, E2P_DATA, &val); - if (unlikely(ret < 0)) - return -EIO; + if (unlikely(ret < 0)) { + retval = -EIO; + goto exit; + } data[i] = val & 0xFF; offset++; } - return 0; + retval = 0; +exit: + if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) + ret = lan78xx_write_reg(dev, HW_CFG, saved); + + return retval; } static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, @@ -509,44 +530,67 @@ static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { u32 val; + u32 saved; int i, ret; + int retval; - ret = lan78xx_eeprom_confirm_not_busy(dev); - if (ret) - return ret; + /* depends on chip, some EEPROM pins are muxed with LED function. + * disable & restore LED function to access EEPROM. + */ + ret = lan78xx_read_reg(dev, HW_CFG, &val); + saved = val; + if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) { + val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); + ret = lan78xx_write_reg(dev, HW_CFG, val); + } + + retval = lan78xx_eeprom_confirm_not_busy(dev); + if (retval) + goto exit; /* Issue write/erase enable command */ val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; ret = lan78xx_write_reg(dev, E2P_CMD, val); - if (unlikely(ret < 0)) - return -EIO; + if (unlikely(ret < 0)) { + retval = -EIO; + goto exit; + } - ret = lan78xx_wait_eeprom(dev); - if (ret < 0) - return ret; + retval = lan78xx_wait_eeprom(dev); + if (retval < 0) + goto exit; for (i = 0; i < length; i++) { /* Fill data register */ val = data[i]; ret = lan78xx_write_reg(dev, E2P_DATA, val); - if (ret < 0) - return ret; + if (ret < 0) { + retval = -EIO; + goto exit; + } /* Send "write" command */ val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; val |= (offset & E2P_CMD_EPC_ADDR_MASK_); ret = lan78xx_write_reg(dev, E2P_CMD, val); - if (ret < 0) - return ret; + if (ret < 0) { + retval = -EIO; + goto exit; + } - ret = lan78xx_wait_eeprom(dev); - if (ret < 0) - return ret; + retval = lan78xx_wait_eeprom(dev); + if (retval < 0) + goto exit; offset++; } - return 0; + retval = 0; +exit: + if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) + ret = lan78xx_write_reg(dev, HW_CFG, saved); + + return retval; } static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, -- cgit v1.2.3 From 4b2a4a965331a8ce7303b43039ce43651ef80fb0 Mon Sep 17 00:00:00 2001 From: "Woojung.Huh@microchip.com" Date: Wed, 27 Jan 2016 22:57:54 +0000 Subject: lan78xx: throttle TX path at slower than SuperSpeed USB Throttle TX path only at slower than SuperSpeed USB. SuperSpeed USB has enough bandwidth to maintain GigE. Signed-off-by: Woojung Huh Signed-off-by: David S. Miller --- drivers/net/usb/lan78xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 650e71604d86..1c299b8a162d 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2263,7 +2263,9 @@ netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) if (skb2) { skb_queue_tail(&dev->txq_pend, skb2); - if (skb_queue_len(&dev->txq_pend) > 10) + /* throttle TX patch at slower than SUPER SPEED USB */ + if ((dev->udev->speed < USB_SPEED_SUPER) && + (skb_queue_len(&dev->txq_pend) > 10)) netif_stop_queue(net); } else { netif_dbg(dev, tx_err, dev->net, -- cgit v1.2.3 From ae461131960b27d4be158d62a89d40977388d7a1 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Thu, 28 Jan 2016 02:30:29 +0100 Subject: of: of_mdio: Add a whitelist of PHY compatibilities. Some phy nodes list a compatible value indicating the PHY make/model. This is never used to match the device to the driver. However it does confuse the code to separate a PHY from a generic MDIO device like a switch. Generic MDIO devices must have a compatible value, PHYs can list clause 22 or 45, but nothing else. Issue a warning if we find a compatible value known on the whitelist, and say it is a PHY. Fixes: a9049e0c513c ("mdio: Add support for mdio drivers.") Reported-by: Aaro Koskinen Reported-by: Olof Johansson Tested-by: Aaro Koskinen Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'drivers') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index b5aa004a24b6..5648317d355f 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -143,11 +143,31 @@ int of_mdio_parse_addr(struct device *dev, const struct device_node *np) } EXPORT_SYMBOL(of_mdio_parse_addr); +/* The following is a list of PHY compatible strings which appear in + * some DTBs. The compatible string is never matched against a PHY + * driver, so is pointless. We only expect devices which are not PHYs + * to have a compatible string, so they can be matched to an MDIO + * driver. Encourage users to upgrade their DT blobs to remove these. + */ +static const struct of_device_id whitelist_phys[] = { + { .compatible = "brcm,40nm-ephy" }, + { .compatible = "marvell,88E1111", }, + { .compatible = "marvell,88e1116", }, + { .compatible = "marvell,88e1118", }, + { .compatible = "marvell,88e1149r", }, + { .compatible = "marvell,88e1310", }, + { .compatible = "marvell,88E1510", }, + { .compatible = "marvell,88E1514", }, + { .compatible = "moxa,moxart-rtl8201cp", }, + {} +}; + /* * Return true if the child node is for a phy. It must either: * o Compatible string of "ethernet-phy-idX.X" * o Compatible string of "ethernet-phy-ieee802.3-c45" * o Compatible string of "ethernet-phy-ieee802.3-c22" + * o In the white list above (and issue a warning) * o No compatibility string * * A device which is not a phy is expected to have a compatible string @@ -166,6 +186,13 @@ static bool of_mdiobus_child_is_phy(struct device_node *child) if (of_device_is_compatible(child, "ethernet-phy-ieee802.3-c22")) return true; + if (of_match_node(whitelist_phys, child)) { + pr_warn(FW_WARN + "%s: Whitelisted compatible string. Please remove\n", + child->full_name); + return true; + } + if (!of_find_property(child, "compatible", NULL)) return true; -- cgit v1.2.3 From 935a0ff0e1ea62a116848c0a187b13838f7b9cee Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Wed, 13 Jan 2016 18:59:39 -0800 Subject: drm/i915: Make sure DC writes are coherent on flush. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We need to set the DC FLUSH PIPE_CONTROL bit on Gen7+ to guarantee that writes performed via the HDC are visible in memory. Fixes an intermittent failure in a Piglit test that writes to a BO from a shader using GL atomic counters (implemented as HDC untyped atomics) and then expects the memory to read back the same value after mapping it on the CPU. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91298 Tested-by: Mark Janes Cc: Rodrigo Vivi Cc: stable@vger.kernel.org Signed-off-by: Francisco Jerez Reviewed-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1452740379-3194-1-git-send-email-currojerez@riseup.net (cherry picked from commit 965fd602a6436f689f4f2fe40a6789582778ccd5) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_lrc.c | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 2 ++ 2 files changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 3aa614731d7e..f1fa756c5d5d 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1707,6 +1707,7 @@ static int gen8_emit_flush_render(struct drm_i915_gem_request *request, if (flush_domains) { flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; + flags |= PIPE_CONTROL_DC_FLUSH_ENABLE; flags |= PIPE_CONTROL_FLUSH_ENABLE; } diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 339701d7a9a5..40c6aff57256 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -331,6 +331,7 @@ gen7_render_ring_flush(struct drm_i915_gem_request *req, if (flush_domains) { flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; + flags |= PIPE_CONTROL_DC_FLUSH_ENABLE; flags |= PIPE_CONTROL_FLUSH_ENABLE; } if (invalidate_domains) { @@ -403,6 +404,7 @@ gen8_render_ring_flush(struct drm_i915_gem_request *req, if (flush_domains) { flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; + flags |= PIPE_CONTROL_DC_FLUSH_ENABLE; flags |= PIPE_CONTROL_FLUSH_ENABLE; } if (invalidate_domains) { -- cgit v1.2.3 From 5efd407674068dede403551bea3b0b134c32513a Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Wed, 13 Jan 2016 16:35:20 +0200 Subject: drm/i915/dp: fall back to 18 bpp when sink capability is unknown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Per DP spec, the source device should fall back to 18 bpp, VESA range RGB when the sink capability is unknown. Fix the color depth clamping. 18 bpp color depth should ensure full color range in automatic mode. The clamping has been HDMI specific since its introduction in commit 996a2239f93b03c5972923f04b097f65565c5bed Author: Daniel Vetter Date: Fri Apr 19 11:24:34 2013 +0200 drm/i915: Disable high-bpc on pre-1.4 EDID screens Cc: stable@vger.kernel.org Reported-and-tested-by: Dihan Wickremasuriya Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105331 Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1452695720-7076-1-git-send-email-jani.nikula@intel.com (cherry picked from commit 013dd9e038723bbd2aa67be51847384b75be8253) --- drivers/gpu/drm/i915/intel_display.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2f00828ccc6e..002ce89de412 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12075,11 +12075,21 @@ connected_sink_compute_bpp(struct intel_connector *connector, pipe_config->pipe_bpp = connector->base.display_info.bpc*3; } - /* Clamp bpp to 8 on screens without EDID 1.4 */ - if (connector->base.display_info.bpc == 0 && bpp > 24) { - DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n", - bpp); - pipe_config->pipe_bpp = 24; + /* Clamp bpp to default limit on screens without EDID 1.4 */ + if (connector->base.display_info.bpc == 0) { + int type = connector->base.connector_type; + int clamp_bpp = 24; + + /* Fall back to 18 bpp when DP sink capability is unknown. */ + if (type == DRM_MODE_CONNECTOR_DisplayPort || + type == DRM_MODE_CONNECTOR_eDP) + clamp_bpp = 18; + + if (bpp > clamp_bpp) { + DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of %d\n", + bpp, clamp_bpp); + pipe_config->pipe_bpp = clamp_bpp; + } } } -- cgit v1.2.3 From 6f94b6dd006909a5ef6435cc0af557e945240f48 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Fri, 15 Jan 2016 20:46:53 +0200 Subject: drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On SKL+ plane scaling is mutually exclusive with color keying. The code check for this, but during some refactoring the code got changed to also reject primary plane windowing when color keying is used. There is no such restriction in the hardware, so restore the original logic. Cc: Maarten Lankhorst Fixes: 061e4b8d650a ("drm/i915: clean up atomic plane check functions, v2.") Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1452883613-28549-1-git-send-email-ville.syrjala@linux.intel.com Cc: stable@vger.kernel.org Reviewed-by: Matt Roper Reviewed-by: Maarten Lankhorst (cherry picked from commit 693bdc28a733dba68b86af295e7509812fec35d9) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 002ce89de412..354f44793218 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13893,11 +13893,12 @@ intel_check_primary_plane(struct drm_plane *plane, int max_scale = DRM_PLANE_HELPER_NO_SCALING; bool can_position = false; - /* use scaler when colorkey is not required */ - if (INTEL_INFO(plane->dev)->gen >= 9 && - state->ckey.flags == I915_SET_COLORKEY_NONE) { - min_scale = 1; - max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state); + if (INTEL_INFO(plane->dev)->gen >= 9) { + /* use scaler when colorkey is not required */ + if (state->ckey.flags == I915_SET_COLORKEY_NONE) { + min_scale = 1; + max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state); + } can_position = true; } -- cgit v1.2.3 From 2850cfddfb052a552dfa19b75836a873e0ca1f50 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 19 Jan 2016 18:23:17 +0200 Subject: drm/i915: Fix NULL plane->fb oops on SKL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In this atomic age, we can't trust the plane->fb pointer anymore. It might get update too late. Instead we are supposed to use the plane_state->fb pointer instead. Let's do that in intel_plane_obj_offset() and avoid problems from dereferencing the potentially stale plane->fb pointer. Paulo found this with 'kms_frontbuffer_tracking --show-hidden --run-subtest nop-1p-rte' but it can be reproduced with just plain old kms_setplane. I was too lazy to bisect this, so not sure exactly when it broke. The most obvious candidate commit ce7f17285639 ("drm/i915: Fix i915_ggtt_view_equal to handle rotation correctly") was actually still fine, so it must have broken some time after that. Here's the resulting fireworks: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] intel_fill_fb_ggtt_view+0x1b/0x15a [i915] PGD 8a5f6067 PUD 8a5f5067 PMD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm intel_gtt agpgart netconsole mousedev hid_generic psmouse usbhid atkbd libps2 coretemp hwmon efi_pstore intel_rapl iosf_mbi x86_pkg_temp_thermal efivars pcspkr e1000e sdhci_pci ptp pps_core sdhci i2c_i801 mmc_core i2c_hid hid i8042 serio evdev sch_fq_codel ip_tables x_tables ipv6 autofs4 CPU: 1 PID: 260 Comm: kms_plane Not tainted 4.4.0-skl+ #171 Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B104.B00.1511030553 11/03/2015 task: ffff88008bde2d80 ti: ffff88008a6ec000 task.ti: ffff88008a6ec000 RIP: 0010:[] [] intel_fill_fb_ggtt_view+0x1b/0x15a [i915] RSP: 0018:ffff88008a6efa10 EFLAGS: 00010086 RAX: 0000000000000001 RBX: ffff8801674f4240 RCX: 0000000000000014 RDX: ffff88008a7440c0 RSI: 0000000000000000 RDI: ffff88008a6efa40 RBP: ffff88008a6efa30 R08: ffff88008bde3598 R09: 0000000000000001 R10: ffff88008b782000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88008a7440c0 R14: 0000000000000000 R15: ffff88008a7449c0 FS: 00007fa0c07a28c0(0000) GS:ffff88016ec40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000008a6ff000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801674f4240 0000000000000000 ffff88008a7440c0 0000000000000000 ffff88008a6efaa0 ffffffffa02daf25 ffffffff814ec80e 0000000000070298 ffff8800850d0000 ffff88008a6efaa0 ffffffffa02c49c2 0000000000000002 Call Trace: [] intel_plane_obj_offset+0x2d/0xa9 [i915] [] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [] ? gen9_write32+0x2e8/0x3b8 [i915] [] skl_update_plane+0x203/0x4c5 [i915] [] intel_plane_atomic_update+0x53/0x6a [i915] [] drm_atomic_helper_commit_planes_on_crtc+0x142/0x1d5 [drm_kms_helper] [] intel_atomic_commit+0x1262/0x1350 [i915] [] ? __drm_atomic_helper_crtc_duplicate_state+0x2f/0x41 [drm_kms_helper] [] ? drm_atomic_check_only+0x3e3/0x552 [drm] [] drm_atomic_commit+0x4d/0x52 [drm] [] drm_atomic_helper_update_plane+0xcb/0x118 [drm_kms_helper] [] __setplane_internal+0x1c8/0x224 [drm] [] drm_mode_setplane+0x14e/0x172 [drm] [] drm_ioctl+0x265/0x3ad [drm] [] ? drm_mode_cursor_common+0x158/0x158 [drm] [] ? current_kernel_time64+0x5e/0x98 [] ? trace_hardirqs_on_caller+0x17a/0x196 [] do_vfs_ioctl+0x42b/0x4ea [] ? __fget_light+0x4d/0x71 [] SyS_ioctl+0x43/0x61 [] entry_SYSCALL_64_fastpath+0x12/0x6f Cc: drm-intel-fixes@lists.freedesktop.org Cc: Paulo Zanoni Testcase: igt/kms_plane Reported-by: Paulo Zanoni Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1453220597-28973-1-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter (cherry picked from commit e794129444aba459e9bedf5080bfb4605f933c32) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 354f44793218..5feb65725c04 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2946,7 +2946,7 @@ u32 intel_plane_obj_offset(struct intel_plane *intel_plane, struct i915_vma *vma; u64 offset; - intel_fill_fb_ggtt_view(&view, intel_plane->base.fb, + intel_fill_fb_ggtt_view(&view, intel_plane->base.state->fb, intel_plane->base.state); vma = i915_gem_obj_to_ggtt_view(obj, &view); -- cgit v1.2.3 From 428398e44a2762875c01a4d5c18932f1e84fdc17 Mon Sep 17 00:00:00 2001 From: Andreas Ziegler Date: Mon, 25 Jan 2016 12:41:19 +0100 Subject: drm/i915: Remove select to deleted STOP_MACHINE from Kconfig Commit 5bab6f60cb4d ("drm/i915: Serialise updates to GGTT with access through GGTT on Braswell") depended upon a working stop_machine() and so forced the selection of STOP_MACHINE. However, commit 86fffe4a61dd ("kernel: remove stop_machine() Kconfig dependency") removed the option STOP_MACHINE from init/Kconfig and ensured that stop_machine() universally works. Due to the order in which the patches were applied, removing the select from DRM_I915 got lost during merging. Remove the now obsolete select statement. Signed-off-by: Andreas Ziegler Reviewed-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/1453722079-2604-1-git-send-email-andreas.ziegler@fau.de Cc: drm-intel-fixes@lists.freedesktop.org Signed-off-by: Daniel Vetter (cherry picked from commit 21fabbebff0e17c7698ed399cae23958c214cc82) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index fcd77b27514d..051eab33e4c7 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -10,7 +10,6 @@ config DRM_I915 # the shmem_readpage() which depends upon tmpfs select SHMEM select TMPFS - select STOP_MACHINE select DRM_KMS_HELPER select DRM_PANEL select DRM_MIPI_DSI -- cgit v1.2.3 From f2e305108faba0c85eb4ba4066599decb675117e Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Mon, 25 Jan 2016 12:02:28 +0100 Subject: drm/i915: refine qemu south bridge detection MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The test for the qemu q35 south bridge added by commit "39bfcd52 drm/i915: more virtual south bridge detection" also matches on real hardware. Having the check for virtual systems last in the list is not enough to avoid that ... Refine the check by additionally verifying the pci subsystem id to see whenever it *really* is qemu. [ v2: fix subvendor tyops ] Reported-and-tested-by: Bjørn Mork Signed-off-by: Gerd Hoffmann Tested-by: Bruno Wolff III Cc: drm-intel-fixes@lists.freedesktop.org Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1453719748-10944-1-git-send-email-kraxel@redhat.com (cherry picked from commit 1e859111c128265f8d62b39ff322e42b1ddb5a20) --- drivers/gpu/drm/i915/i915_drv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 3ac616d7363b..f357058c74d9 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -501,7 +501,9 @@ void intel_detect_pch(struct drm_device *dev) WARN_ON(!IS_SKYLAKE(dev) && !IS_KABYLAKE(dev)); } else if ((id == INTEL_PCH_P2X_DEVICE_ID_TYPE) || - (id == INTEL_PCH_QEMU_DEVICE_ID_TYPE)) { + ((id == INTEL_PCH_QEMU_DEVICE_ID_TYPE) && + pch->subsystem_vendor == 0x1af4 && + pch->subsystem_device == 0x1100)) { dev_priv->pch_type = intel_virt_detect_pch(dev); } else continue; -- cgit v1.2.3 From 87df1b2a2103b9019433da99be43a472c16647ab Mon Sep 17 00:00:00 2001 From: Andrea Merello Date: Tue, 26 Jan 2016 15:48:04 +0100 Subject: ocfb: fix tgdel and tvdel timing parameters According to the ocfb documentation: Fix tgdel HW param should be left margin, not right. Fix tvdel HW param should upper margin, not lower. This seems to fix lock issues on certain monitors (tested on a slightly customized IP, but the FPGA guy said that it should be the same wrt this changes). Signed-off-by: Andrea Merello Acked-by: Stefan Kristiansson Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/ocfb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/video/fbdev/ocfb.c b/drivers/video/fbdev/ocfb.c index c9293aea8ec3..a970edc2a6f8 100644 --- a/drivers/video/fbdev/ocfb.c +++ b/drivers/video/fbdev/ocfb.c @@ -123,11 +123,11 @@ static int ocfb_setupfb(struct ocfb_dev *fbdev) /* Horizontal timings */ ocfb_writereg(fbdev, OCFB_HTIM, (var->hsync_len - 1) << 24 | - (var->right_margin - 1) << 16 | (var->xres - 1)); + (var->left_margin - 1) << 16 | (var->xres - 1)); /* Vertical timings */ ocfb_writereg(fbdev, OCFB_VTIM, (var->vsync_len - 1) << 24 | - (var->lower_margin - 1) << 16 | (var->yres - 1)); + (var->upper_margin - 1) << 16 | (var->yres - 1)); /* Total length of frame */ hlen = var->left_margin + var->right_margin + var->hsync_len + -- cgit v1.2.3 From b54729b6cea7d1f46b1ed70cb7065c6bdefaa780 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 16:04:03 +0100 Subject: fbdev: s6e8ax0: avoid unused function warnings The s6e8ax0 suspend/resume functions are hidden inside of an #ifdef when CONFIG_PM is set to avoid unused function warnings, but they call some other functions that nothing else calls, and we get warnings about those: drivers/video/fbdev/exynos/s6e8ax0.c:449:13: error: 's6e8ax0_sleep_in' defined but not used [-Werror=unused-function] drivers/video/fbdev/exynos/s6e8ax0.c:485:13: error: 's6e8ax0_display_off' defined but not used [-Werror=unused-function] This marks the PM functions as __maybe_unused so the compiler can silently drop them when they are not referenced. Signed-off-by: Arnd Bergmann Reviewed-by: Krzysztof Kozlowski Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/exynos/s6e8ax0.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/video/fbdev/exynos/s6e8ax0.c b/drivers/video/fbdev/exynos/s6e8ax0.c index 95873f26e39c..de2f3e793786 100644 --- a/drivers/video/fbdev/exynos/s6e8ax0.c +++ b/drivers/video/fbdev/exynos/s6e8ax0.c @@ -829,8 +829,7 @@ static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev) return 0; } -#ifdef CONFIG_PM -static int s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev) +static int __maybe_unused s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); @@ -843,7 +842,7 @@ static int s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev) return 0; } -static int s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev) +static int __maybe_unused s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); @@ -855,10 +854,6 @@ static int s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev) return 0; } -#else -#define s6e8ax0_suspend NULL -#define s6e8ax0_resume NULL -#endif static struct mipi_dsim_lcd_driver s6e8ax0_dsim_ddi_driver = { .name = "s6e8ax0", @@ -867,8 +862,8 @@ static struct mipi_dsim_lcd_driver s6e8ax0_dsim_ddi_driver = { .power_on = s6e8ax0_power_on, .set_sequence = s6e8ax0_set_sequence, .probe = s6e8ax0_probe, - .suspend = s6e8ax0_suspend, - .resume = s6e8ax0_resume, + .suspend = IS_ENABLED(CONFIG_PM) ? s6e8ax0_suspend : NULL, + .resume = IS_ENABLED(CONFIG_PM) ? s6e8ax0_resume : NULL, }; static int s6e8ax0_init(void) -- cgit v1.2.3 From ef88ee4e2c98c11dab56b2845ade9270acb8e68b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 16:05:18 +0100 Subject: fbdev: da8xx-fb: remove incorrect type cast The probe function correct passes a dma_addr_t pointer into dma_alloc_coherent(), but has a cast to resource_size_t, which might be different from dma_addr_t: drivers/video/fbdev/da8xx-fb.c: In function 'fb_probe': drivers/video/fbdev/da8xx-fb.c:1431:10: error: passing argument 3 of 'dma_alloc_coherent' from incompatible pointer type [-Werror=incompatible-pointer-types] This removes the cast, which avoids the warning. Signed-off-by: Arnd Bergmann Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/da8xx-fb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c index 0081725c6b5b..6b2a06d09f2b 100644 --- a/drivers/video/fbdev/da8xx-fb.c +++ b/drivers/video/fbdev/da8xx-fb.c @@ -152,7 +152,7 @@ static void lcdc_write(unsigned int val, unsigned int addr) struct da8xx_fb_par { struct device *dev; - resource_size_t p_palette_base; + dma_addr_t p_palette_base; unsigned char *v_palette_base; dma_addr_t vram_phys; unsigned long vram_size; @@ -1428,7 +1428,7 @@ static int fb_probe(struct platform_device *device) par->vram_virt = dma_alloc_coherent(NULL, par->vram_size, - (resource_size_t *) &par->vram_phys, + &par->vram_phys, GFP_KERNEL | GFP_DMA); if (!par->vram_virt) { dev_err(&device->dev, @@ -1448,7 +1448,7 @@ static int fb_probe(struct platform_device *device) /* allocate palette buffer */ par->v_palette_base = dma_zalloc_coherent(NULL, PALETTE_SIZE, - (resource_size_t *)&par->p_palette_base, + &par->p_palette_base, GFP_KERNEL | GFP_DMA); if (!par->v_palette_base) { dev_err(&device->dev, -- cgit v1.2.3 From c3a2da26e6216033456c1d5375cd1d2629d1fd09 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 16:03:01 +0100 Subject: fbdev: mmp: print IRQ resource using %pR format string resource_size_t cannot be printed using the %x format string when we it is defined as u64: drivers/video/fbdev/mmp/hw/mmp_ctrl.c: In function 'mmphw_probe': drivers/video/fbdev/mmp/hw/mmp_ctrl.c:506:22: error: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'resource_size_t {aka long long unsigned int}' [-Werror=format=] dev_err(ctrl->dev, "%s: res %x - %x map failed\n", __func__, ^ drivers/video/fbdev/mmp/hw/mmp_ctrl.c:506:22: error: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'resource_size_t {aka long long unsigned int}' [-Werror=format=] This changes the format string to %pR, which is interpreted by the printk implementation to pretty-print a resource structure. Signed-off-by: Arnd Bergmann Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/mmp/hw/mmp_ctrl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/video/fbdev/mmp/hw/mmp_ctrl.c b/drivers/video/fbdev/mmp/hw/mmp_ctrl.c index de54a4748065..b6f83d5df9fd 100644 --- a/drivers/video/fbdev/mmp/hw/mmp_ctrl.c +++ b/drivers/video/fbdev/mmp/hw/mmp_ctrl.c @@ -503,8 +503,7 @@ static int mmphw_probe(struct platform_device *pdev) ctrl->reg_base = devm_ioremap_nocache(ctrl->dev, res->start, resource_size(res)); if (ctrl->reg_base == NULL) { - dev_err(ctrl->dev, "%s: res %x - %x map failed\n", __func__, - res->start, res->end); + dev_err(ctrl->dev, "%s: res %pR map failed\n", __func__, res); ret = -ENOMEM; goto failed; } -- cgit v1.2.3 From a588afc920bc50e894f6ae2874c4281c795e0979 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 29 Jan 2016 07:06:53 -0500 Subject: libata-sff: use WARN instead of BUG on illegal host state machine state ata_sff_hsm_move() triggers BUG if it sees a host state machine state that it dind't expect. The risk for data corruption when the condition occurs is low as it's highly unlikely that it would lead to spurious completion of commands. The BUG occasionally triggered for subtle race conditions in the driver. Let's downgrade it to WARN so that it doesn't kill the machine unnecessarily. Signed-off-by: Tejun Heo Cc: Dmitry Vyukov --- drivers/ata/libata-sff.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index cdf6215a9a22..608677df4f49 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1296,7 +1296,8 @@ fsm_start: break; default: poll_next = 0; - BUG(); + WARN(true, "ata%d: SFF host state machine in invalid state %d", + ap->print_id, ap->hsm_task_state); } return poll_next; -- cgit v1.2.3 From b82fe6ddd782f847332aeabf8cab980852f61629 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 19 Jan 2016 11:10:57 -0200 Subject: video: fbdev: imxfb: Provide a reset mechanism Currently when we boot the kernel on a mx25pdk the LCDC controller does not show the Linux logo on boot. This problem is well explained by Sascha Hauer: "Unfortunately this LCD controller does not have an enable bit. The controller starts directly when the clocks are enabled. If the clocks are enabled when the controller is not yet programmed with proper register values then it just goes into some undefined state. What I suspect is that the clocks already were enabled before driver probe, presumably by the bootloader, so the controller is already in undefined state when entering Linux. Now by dis/enabling the ipg clock you effectively reset the controller. Since you have programmed it with valid register values in the mean time it starts working after this reset." So do as suggested and force a reset of the LCDC hardware by enabling and disabling the IPG clock. With this change the Linux logo can be seen on boot on a mx25pdk. Signed-off-by: Fabio Estevam Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/imxfb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers') diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c index cee88603efc9..bb2f1e866020 100644 --- a/drivers/video/fbdev/imxfb.c +++ b/drivers/video/fbdev/imxfb.c @@ -902,6 +902,21 @@ static int imxfb_probe(struct platform_device *pdev) goto failed_getclock; } + /* + * The LCDC controller does not have an enable bit. The + * controller starts directly when the clocks are enabled. + * If the clocks are enabled when the controller is not yet + * programmed with proper register values (enabled at the + * bootloader, for example) then it just goes into some undefined + * state. + * To avoid this issue, let's enable and disable LCDC IPG clock + * so that we force some kind of 'reset' to the LCDC block. + */ + ret = clk_prepare_enable(fbi->clk_ipg); + if (ret) + goto failed_getclock; + clk_disable_unprepare(fbi->clk_ipg); + fbi->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); if (IS_ERR(fbi->clk_ahb)) { ret = PTR_ERR(fbi->clk_ahb); -- cgit v1.2.3 From ad32152eb26043d165eed9406cb9e2f7011f6b10 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 28 Jan 2016 16:27:41 -0500 Subject: drm/amdgpu: no need to load MC firmware on fiji Vbios does this for us on asic_init. Reviewed-by: Ken Wang >Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index c0c9a0101eb4..875a5e988cb1 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -44,7 +44,6 @@ static void gmc_v8_0_set_irq_funcs(struct amdgpu_device *adev); MODULE_FIRMWARE("amdgpu/topaz_mc.bin"); MODULE_FIRMWARE("amdgpu/tonga_mc.bin"); -MODULE_FIRMWARE("amdgpu/fiji_mc.bin"); static const u32 golden_settings_tonga_a11[] = { @@ -236,8 +235,6 @@ static int gmc_v8_0_init_microcode(struct amdgpu_device *adev) chip_name = "tonga"; break; case CHIP_FIJI: - chip_name = "fiji"; - break; case CHIP_CARRIZO: case CHIP_STONEY: return 0; @@ -1007,7 +1004,8 @@ static int gmc_v8_0_hw_init(void *handle) gmc_v8_0_mc_program(adev); - if (!(adev->flags & AMD_IS_APU)) { + if ((adev->asic_type == CHIP_TOPAZ) || + (adev->asic_type == CHIP_TONGA)) { r = gmc_v8_0_mc_load_microcode(adev); if (r) { DRM_ERROR("Failed to load MC firmware!\n"); -- cgit v1.2.3 From 286af315d3f153595ce718fb1e442891f14ed5c0 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Wed, 27 Jan 2016 17:34:37 +0800 Subject: net: cavium: liquidio: use helpers ns_to_timespec64() Convert the driver to use ns_to_timespec64() to keep consistency with timespec64_to_ns() instead of open coding the same logic. Signed-off-by: Kefeng Wang Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/liquidio/lio_main.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index b89504405b72..872765527081 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -1526,7 +1526,6 @@ static int liquidio_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) { u64 ns; - u32 remainder; unsigned long flags; struct lio *lio = container_of(ptp, struct lio, ptp_info); struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; @@ -1536,8 +1535,7 @@ static int liquidio_ptp_gettime(struct ptp_clock_info *ptp, ns += lio->ptp_adjust; spin_unlock_irqrestore(&lio->ptp_lock, flags); - ts->tv_sec = div_u64_rem(ns, 1000000000ULL, &remainder); - ts->tv_nsec = remainder; + *ts = ns_to_timespec64(ns); return 0; } -- cgit v1.2.3 From de7d244d0a351f27cfef5f51088ea9a64054c948 Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Wed, 27 Jan 2016 17:50:43 +0100 Subject: macvlan: make operstate and carrier more accurate Currently when a macvlan is being initialized and the lower device is netif_carrier_ok(), the macvlan device doesn't run through rfc2863_policy() and is left with UNKNOWN operstate. Fix it by adding an unconditional linkwatch event for the new macvlan device. Similar fix is already used by the 8021q device (see register_vlan_dev()). Also fix the inconsistent state when the lower device has been down and its carrier was changed (when a device is down NETDEV_CHANGE doesn't get generated). The second issue can be seen f.e. when we have a macvlan on top of a 8021q device which has been down and its real device has been changing carrier states, after setting the 8021q device up, the macvlan device will have the same carrier state as it was before even though the 8021q can now have a different state. Example for case 1: 4: eth2: mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 $ ip l add l eth2 macvl0 type macvlan $ ip l set macvl0 up $ ip l sh macvl0 72: macvl0@eth2: mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default link/ether f6:0b:54:0a:9d:a3 brd ff:ff:ff:ff:ff:ff Example for case 2 (order is important): Prestate: eth2 UP/CARRIER, vlan1 down, vlan1-macvlan down $ ip l set vlan1-macvlan up $ ip l sh vlan1-macvlan 71: vlan1-macvlan@vlan1: mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default link/ether 4a:b8:44:56:b9:b9 brd ff:ff:ff:ff:ff:ff [ eth2 loses CARRIER before vlan1 has been UP-ed ] $ ip l sh eth2 4: eth2: mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000 link/ether 52:54:00:bf:57:16 brd ff:ff:ff:ff:ff:ff $ ip l sh vlan1-macvlan 71: vlan1-macvlan@vlan1: mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default link/ether 4a:b8:44:56:b9:b9 brd ff:ff:ff:ff:ff:ff $ ip l set vlan1 up $ ip l sh vlan1 70: vlan1@eth2: mtu 1500 qdisc noqueue state LOWERLAYERDOWN mode DEFAULT group default qlen 1000 link/ether 52:54:00:bf:57:16 brd ff:ff:ff:ff:ff:ff $ ip l sh vlan1-macvlan 71: vlan1-macvlan@vlan1: mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default link/ether 4a:b8:44:56:b9:b9 brd ff:ff:ff:ff:ff:ff vlan1-macvlan is still UP, still has carrier and is still in the same operstate as before. After the patch in case 1 macvl0 has state UP as it should and in case 2 vlan1-macvlan has state LOWERLAYERDOWN again as it should. Note that while the lower macvlan device is down their carrier and thus operstate can go out of sync but that will be fixed once the lower device goes up again. This behaviour seems to have been present since beginning of git history. Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 6a57a005e0ca..94e688805dd2 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -1323,6 +1323,7 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, list_add_tail_rcu(&vlan->list, &port->vlans); netif_stacked_transfer_operstate(lowerdev, dev); + linkwatch_fire_event(dev); return 0; @@ -1522,6 +1523,7 @@ static int macvlan_device_event(struct notifier_block *unused, port = macvlan_port_get_rtnl(dev); switch (event) { + case NETDEV_UP: case NETDEV_CHANGE: list_for_each_entry(vlan, &port->vlans, list) netif_stacked_transfer_operstate(vlan->lowerdev, -- cgit v1.2.3 From b83ef507d9e2bc25cea40b1fb13ebd1ca7c4969a Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Thu, 28 Jan 2016 10:27:19 +0800 Subject: ptp: ixp46x: use helpers for converting ns to timespec Convert the driver to use ns_to_timespec64() and timespec64_to_ns() instead of open coding the same logic. Signed-off-by: Kefeng Wang Acked-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/ptp/ptp_ixp46x.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/ptp/ptp_ixp46x.c b/drivers/ptp/ptp_ixp46x.c index 934c139916c6..ee4f183ef9ee 100644 --- a/drivers/ptp/ptp_ixp46x.c +++ b/drivers/ptp/ptp_ixp46x.c @@ -178,7 +178,6 @@ static int ptp_ixp_adjtime(struct ptp_clock_info *ptp, s64 delta) static int ptp_ixp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) { u64 ns; - u32 remainder; unsigned long flags; struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps); struct ixp46x_ts_regs *regs = ixp_clock->regs; @@ -189,8 +188,7 @@ static int ptp_ixp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) spin_unlock_irqrestore(®ister_lock, flags); - ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder); - ts->tv_nsec = remainder; + *ts = ns_to_timespec64(ns); return 0; } @@ -202,8 +200,7 @@ static int ptp_ixp_settime(struct ptp_clock_info *ptp, struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps); struct ixp46x_ts_regs *regs = ixp_clock->regs; - ns = ts->tv_sec * 1000000000ULL; - ns += ts->tv_nsec; + ns = timespec64_to_ns(ts); spin_lock_irqsave(®ister_lock, flags); -- cgit v1.2.3 From 74608fc98d2856fa7201a498b61c9dd9455b504a Mon Sep 17 00:00:00 2001 From: Prashant Sreedharan Date: Thu, 28 Jan 2016 03:11:20 -0500 Subject: bnxt_en: Ring free response from close path should use completion ring Use completion ring for ring free response from firmware. The response will be the last entry in the ring and we can free the ring after getting the response. This will guarantee no spurious DMA to freed memory. Signed-off-by: Prashant Sreedharan Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index df835f5e46d8..17dcacd3ad43 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -3406,7 +3406,7 @@ static int hwrm_ring_free_send_msg(struct bnxt *bp, struct hwrm_ring_free_output *resp = bp->hwrm_cmd_resp_addr; u16 error_code; - bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_FREE, -1, -1); + bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_RING_FREE, cmpl_ring_id, -1); req.ring_type = ring_type; req.ring_id = cpu_to_le16(ring->fw_ring_id); -- cgit v1.2.3 From 8a4d4c8dde7a4119bce3fd8287dca193ff6356da Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Thu, 28 Jan 2016 03:11:21 -0500 Subject: bnxt_en: Exclude rx_drop_pkts hw counter from the stack's rx_dropped counter. This hardware counter is misleading as it counts dropped packets that don't match the hardware filters for unicast/broadcast/multicast. We will still report this counter in ethtool -S for diagnostics purposes. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 17dcacd3ad43..ebc541340ea1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4819,8 +4819,6 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) stats->multicast += le64_to_cpu(hw_stats->rx_mcast_pkts); - stats->rx_dropped += le64_to_cpu(hw_stats->rx_drop_pkts); - stats->tx_dropped += le64_to_cpu(hw_stats->tx_drop_pkts); } -- cgit v1.2.3 From d612a579771385e08f7b665063b36bfa52c03ea3 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Thu, 28 Jan 2016 03:11:22 -0500 Subject: bnxt_en: Fix crash in bnxt_free_tx_skbs() during tx timeout. The ring index j is not wrapped properly at the end of the ring, causing it to reference pointers past the end of the ring. For proper loop termination and to access the ring properly, we need to increment j and mask it before referencing the ring entry. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index ebc541340ea1..5dc89e527e7d 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1490,10 +1490,11 @@ static void bnxt_free_tx_skbs(struct bnxt *bp) last = tx_buf->nr_frags; j += 2; - for (k = 0; k < last; k++, j = NEXT_TX(j)) { + for (k = 0; k < last; k++, j++) { + int ring_idx = j & bp->tx_ring_mask; skb_frag_t *frag = &skb_shinfo(skb)->frags[k]; - tx_buf = &txr->tx_buf_ring[j]; + tx_buf = &txr->tx_buf_ring[ring_idx]; dma_unmap_page( &pdev->dev, dma_unmap_addr(tx_buf, mapping), -- cgit v1.2.3 From 45eb570a0db3391c88cba04510a20fe7e4125497 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 29 Jan 2016 17:42:51 -0800 Subject: libnvdimm, pfn: fix restoring memmap location This path was missed when turning on the memmap in pmem support. Permit 'pmem' as a valid location for the map. Reported-by: Jeff Moyer Signed-off-by: Dan Williams --- drivers/nvdimm/pfn_devs.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 0cc9048b86e2..ae81a2f1da50 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -301,10 +301,8 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn) switch (le32_to_cpu(pfn_sb->mode)) { case PFN_MODE_RAM: - break; case PFN_MODE_PMEM: - /* TODO: allocate from PMEM support */ - return -ENOTTY; + break; default: return -ENXIO; } -- cgit v1.2.3 From 8a9ebe717a133ba7bc90b06047f43cc6b8bcb8b3 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Mon, 18 Jan 2016 14:09:27 -0600 Subject: target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors In a couple places we are not converting to/from the Linux block layer 512 bytes sectors. 1. The request queue values and what we do are a mismatch of things: max_discard_sectors - This is in linux block layer 512 byte sectors. We are just copying this to max_unmap_lba_count. discard_granularity - This is in bytes. We are converting it to Linux block layer 512 byte sectors. discard_alignment - This is in bytes. We are just copying this over. The problem is that the core LIO code exports these values in spc_emulate_evpd_b0 and we use them to test request arguments in sbc_execute_unmap, but we never convert to the block size we export to the initiator. If we are not using 512 byte sectors then we are exporting the wrong values or are checks are off. And, for the discard_alignment/bytes case we are just plain messed up. 2. blkdev_issue_discard's start and number of sector arguments are supposed to be in linux block layer 512 byte sectors. We are currently passing in the values we get from the initiator which might be based on some other sector size. There is a similar problem in iblock_execute_write_same where the bio functions want values in 512 byte sectors but we are passing in what we got from the initiator. Signed-off-by: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_device.c | 44 ++++++++++++++++++++++++++++ drivers/target/target_core_file.c | 29 ++++++------------- drivers/target/target_core_iblock.c | 58 +++++++++---------------------------- 3 files changed, 67 insertions(+), 64 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index cacd97a8cbd0..da457e25717a 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -828,6 +828,50 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) return dev; } +/* + * Check if the underlying struct block_device request_queue supports + * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM + * in ATA and we need to set TPE=1 + */ +bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, + struct request_queue *q, int block_size) +{ + if (!blk_queue_discard(q)) + return false; + + attrib->max_unmap_lba_count = (q->limits.max_discard_sectors << 9) / + block_size; + /* + * Currently hardcoded to 1 in Linux/SCSI code.. + */ + attrib->max_unmap_block_desc_count = 1; + attrib->unmap_granularity = q->limits.discard_granularity / block_size; + attrib->unmap_granularity_alignment = q->limits.discard_alignment / + block_size; + attrib->unmap_zeroes_data = q->limits.discard_zeroes_data; + return true; +} +EXPORT_SYMBOL(target_configure_unmap_from_queue); + +/* + * Convert from blocksize advertised to the initiator to the 512 byte + * units unconditionally used by the Linux block layer. + */ +sector_t target_to_linux_sector(struct se_device *dev, sector_t lb) +{ + switch (dev->dev_attrib.block_size) { + case 4096: + return lb << 3; + case 2048: + return lb << 2; + case 1024: + return lb << 1; + default: + return lb; + } +} +EXPORT_SYMBOL(target_to_linux_sector); + int target_configure_device(struct se_device *dev) { struct se_hba *hba = dev->se_hba; diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index e3195700211a..75f0f08b2a34 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -160,25 +160,11 @@ static int fd_configure_device(struct se_device *dev) " block_device blocks: %llu logical_block_size: %d\n", dev_size, div_u64(dev_size, fd_dev->fd_block_size), fd_dev->fd_block_size); - /* - * Check if the underlying struct block_device request_queue supports - * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM - * in ATA and we need to set TPE=1 - */ - if (blk_queue_discard(q)) { - dev->dev_attrib.max_unmap_lba_count = - q->limits.max_discard_sectors; - /* - * Currently hardcoded to 1 in Linux/SCSI code.. - */ - dev->dev_attrib.max_unmap_block_desc_count = 1; - dev->dev_attrib.unmap_granularity = - q->limits.discard_granularity >> 9; - dev->dev_attrib.unmap_granularity_alignment = - q->limits.discard_alignment; + + if (target_configure_unmap_from_queue(&dev->dev_attrib, q, + fd_dev->fd_block_size)) pr_debug("IFILE: BLOCK Discard support available," - " disabled by default\n"); - } + " disabled by default\n"); /* * Enable write same emulation for IBLOCK and use 0xFFFF as * the smaller WRITE_SAME(10) only has a two-byte block count. @@ -490,9 +476,12 @@ fd_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb) if (S_ISBLK(inode->i_mode)) { /* The backend is block device, use discard */ struct block_device *bdev = inode->i_bdev; + struct se_device *dev = cmd->se_dev; - ret = blkdev_issue_discard(bdev, lba, - nolb, GFP_KERNEL, 0); + ret = blkdev_issue_discard(bdev, + target_to_linux_sector(dev, lba), + target_to_linux_sector(dev, nolb), + GFP_KERNEL, 0); if (ret < 0) { pr_warn("FILEIO: blkdev_issue_discard() failed: %d\n", ret); diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 5a2899f9f50b..abe4eb997a84 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -121,29 +121,11 @@ static int iblock_configure_device(struct se_device *dev) dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q); dev->dev_attrib.hw_queue_depth = q->nr_requests; - /* - * Check if the underlying struct block_device request_queue supports - * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM - * in ATA and we need to set TPE=1 - */ - if (blk_queue_discard(q)) { - dev->dev_attrib.max_unmap_lba_count = - q->limits.max_discard_sectors; - - /* - * Currently hardcoded to 1 in Linux/SCSI code.. - */ - dev->dev_attrib.max_unmap_block_desc_count = 1; - dev->dev_attrib.unmap_granularity = - q->limits.discard_granularity >> 9; - dev->dev_attrib.unmap_granularity_alignment = - q->limits.discard_alignment; - dev->dev_attrib.unmap_zeroes_data = - q->limits.discard_zeroes_data; - + if (target_configure_unmap_from_queue(&dev->dev_attrib, q, + dev->dev_attrib.hw_block_size)) pr_debug("IBLOCK: BLOCK Discard support available," - " disabled by default\n"); - } + " disabled by default\n"); + /* * Enable write same emulation for IBLOCK and use 0xFFFF as * the smaller WRITE_SAME(10) only has a two-byte block count. @@ -415,9 +397,13 @@ static sense_reason_t iblock_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb) { struct block_device *bdev = IBLOCK_DEV(cmd->se_dev)->ibd_bd; + struct se_device *dev = cmd->se_dev; int ret; - ret = blkdev_issue_discard(bdev, lba, nolb, GFP_KERNEL, 0); + ret = blkdev_issue_discard(bdev, + target_to_linux_sector(dev, lba), + target_to_linux_sector(dev, nolb), + GFP_KERNEL, 0); if (ret < 0) { pr_err("blkdev_issue_discard() failed: %d\n", ret); return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; @@ -433,8 +419,10 @@ iblock_execute_write_same(struct se_cmd *cmd) struct scatterlist *sg; struct bio *bio; struct bio_list list; - sector_t block_lba = cmd->t_task_lba; - sector_t sectors = sbc_get_write_same_sectors(cmd); + struct se_device *dev = cmd->se_dev; + sector_t block_lba = target_to_linux_sector(dev, cmd->t_task_lba); + sector_t sectors = target_to_linux_sector(dev, + sbc_get_write_same_sectors(cmd)); if (cmd->prot_op) { pr_err("WRITE_SAME: Protection information with IBLOCK" @@ -648,12 +636,12 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, enum dma_data_direction data_direction) { struct se_device *dev = cmd->se_dev; + sector_t block_lba = target_to_linux_sector(dev, cmd->t_task_lba); struct iblock_req *ibr; struct bio *bio, *bio_start; struct bio_list list; struct scatterlist *sg; u32 sg_num = sgl_nents; - sector_t block_lba; unsigned bio_cnt; int rw = 0; int i; @@ -679,24 +667,6 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, rw = READ; } - /* - * Convert the blocksize advertised to the initiator to the 512 byte - * units unconditionally used by the Linux block layer. - */ - if (dev->dev_attrib.block_size == 4096) - block_lba = (cmd->t_task_lba << 3); - else if (dev->dev_attrib.block_size == 2048) - block_lba = (cmd->t_task_lba << 2); - else if (dev->dev_attrib.block_size == 1024) - block_lba = (cmd->t_task_lba << 1); - else if (dev->dev_attrib.block_size == 512) - block_lba = cmd->t_task_lba; - else { - pr_err("Unsupported SCSI -> BLOCK LBA conversion:" - " %u\n", dev->dev_attrib.block_size); - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - } - ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL); if (!ibr) goto fail; -- cgit v1.2.3 From dacb58221805bb72ec46a73826c9e59a587d7d68 Mon Sep 17 00:00:00 2001 From: Himanshu Madhani Date: Wed, 20 Jan 2016 15:42:58 -0800 Subject: qla2xxx: Fix warning reported by static checker This patch fixes following warning drivers/scsi/qla2xxx/qla_target.c:3587 qlt_do_ctio_completion() warn: impossible condition '(logged_out == 41) => (0-1 == 41)' drivers/scsi/qla2xxx/qla_target.c 3580 case CTIO_PORT_LOGGED_OUT: 3581 case CTIO_PORT_UNAVAILABLE: 3582 { 3583 bool logged_out = (status & 0xFFFF); 3584 ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, 3585 "qla_target(%d): CTIO with %s status %x " 3586 "received (state %x, se_cmd %p)\n", vha->vp_idx, 3587 (logged_out == CTIO_PORT_LOGGED_OUT) ? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Bool cannot equal 0x26. 3588 "PORT LOGGED OUT" : "PORT UNAVAILABLE", Reported-by: Dan Carpenter Signed-off-by: Himanshu Madhani Signed-off-by: Giridhar Malavali Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 8075a4cdb45c..2c71305d2563 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -3580,12 +3580,13 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, case CTIO_PORT_LOGGED_OUT: case CTIO_PORT_UNAVAILABLE: { - int logged_out = (status & 0xFFFF); + int logged_out = + (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; + ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, "qla_target(%d): CTIO with %s status %x " "received (state %x, se_cmd %p)\n", vha->vp_idx, - (logged_out == CTIO_PORT_LOGGED_OUT) ? - "PORT LOGGED OUT" : "PORT UNAVAILABLE", + logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", status, cmd->state, se_cmd); if (logged_out && cmd->sess) { -- cgit v1.2.3 From a07100e00ac42a4474530ce17b4978c9e06bde55 Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Mon, 7 Dec 2015 19:48:57 -0500 Subject: qla2xxx: Fix TMR ABORT interaction issue between qla2xxx and TCM During lun reset, TMR thread from TCM would issue abort to qla driver. At abort time, each command is in different state. Depending on the state, qla will use the TMR thread to trigger a command free(cmd_kref--) if command is not down at firmware. Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 55 +++++++++++++++++++--------- drivers/scsi/qla2xxx/qla_target.h | 59 +++++++++++++++++------------- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 73 ++++++++++++++++++++++++++++++++++++-- 3 files changed, 142 insertions(+), 45 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 2c71305d2563..74eb776d2faa 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -105,7 +105,7 @@ static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, int fn, void *iocb, int flags); static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd - *cmd, struct atio_from_isp *atio, int ha_locked); + *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha, struct qla_tgt_srr_imm *imm, int ha_lock); static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, @@ -2665,7 +2665,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, /* no need to terminate. FW already freed exchange. */ qlt_abort_cmd_on_host_reset(cmd->vha, cmd); else - qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); + qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); spin_unlock_irqrestore(&ha->hardware_lock, flags); return 0; } @@ -3173,7 +3173,8 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha, } static void qlt_send_term_exchange(struct scsi_qla_host *vha, - struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked) + struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, + int ul_abort) { unsigned long flags = 0; int rc; @@ -3193,8 +3194,7 @@ static void qlt_send_term_exchange(struct scsi_qla_host *vha, qlt_alloc_qfull_cmd(vha, atio, 0, 0); done: - if (cmd && (!cmd->aborted || - !cmd->cmd_sent_to_fw)) { + if (cmd && !ul_abort && !cmd->aborted) { if (cmd->sg_mapped) qlt_unmap_sg(vha, cmd); vha->hw->tgt.tgt_ops->free_cmd(cmd); @@ -3253,21 +3253,38 @@ static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) } -void qlt_abort_cmd(struct qla_tgt_cmd *cmd) +int qlt_abort_cmd(struct qla_tgt_cmd *cmd) { struct qla_tgt *tgt = cmd->tgt; struct scsi_qla_host *vha = tgt->vha; struct se_cmd *se_cmd = &cmd->se_cmd; + unsigned long flags; ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, "qla_target(%d): terminating exchange for aborted cmd=%p " "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, se_cmd->tag); + spin_lock_irqsave(&cmd->cmd_lock, flags); + if (cmd->aborted) { + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + /* + * It's normal to see 2 calls in this path: + * 1) XFER Rdy completion + CMD_T_ABORT + * 2) TCM TMR - drain_state_list + */ + ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff, + "multiple abort. %p transport_state %x, t_state %x," + " se_cmd_flags %x \n", cmd, cmd->se_cmd.transport_state, + cmd->se_cmd.t_state,cmd->se_cmd.se_cmd_flags); + return EIO; + } cmd->aborted = 1; cmd->cmd_flags |= BIT_6; + spin_unlock_irqrestore(&cmd->cmd_lock, flags); - qlt_send_term_exchange(vha, cmd, &cmd->atio, 0); + qlt_send_term_exchange(vha, cmd, &cmd->atio, 0, 1); + return 0; } EXPORT_SYMBOL(qlt_abort_cmd); @@ -3282,6 +3299,9 @@ void qlt_free_cmd(struct qla_tgt_cmd *cmd) BUG_ON(cmd->cmd_in_wq); + if (cmd->sg_mapped) + qlt_unmap_sg(cmd->vha, cmd); + if (!cmd->q_full) qlt_decr_num_pend_cmds(cmd->vha); @@ -3399,7 +3419,7 @@ static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, term = 1; if (term) - qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); + qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); return term; } @@ -3755,6 +3775,7 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd) goto out_term; } + spin_lock_init(&cmd->cmd_lock); cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; cmd->se_cmd.tag = atio->u.isp24.exchange_addr; cmd->unpacked_lun = scsilun_to_int( @@ -3797,7 +3818,7 @@ out_term: */ cmd->cmd_flags |= BIT_2; spin_lock_irqsave(&ha->hardware_lock, flags); - qlt_send_term_exchange(vha, NULL, &cmd->atio, 1); + qlt_send_term_exchange(vha, NULL, &cmd->atio, 1, 0); qlt_decr_num_pend_cmds(vha); percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag); @@ -3919,7 +3940,7 @@ static void qlt_create_sess_from_atio(struct work_struct *work) out_term: spin_lock_irqsave(&ha->hardware_lock, flags); - qlt_send_term_exchange(vha, NULL, &op->atio, 1); + qlt_send_term_exchange(vha, NULL, &op->atio, 1, 0); spin_unlock_irqrestore(&ha->hardware_lock, flags); kfree(op); @@ -4772,7 +4793,7 @@ out_reject: dump_stack(); } else { cmd->cmd_flags |= BIT_9; - qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); + qlt_send_term_exchange(vha, cmd, &cmd->atio, 1, 0); } spin_unlock_irqrestore(&ha->hardware_lock, flags); } @@ -4951,7 +4972,7 @@ static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, sctio, sctio->srr_id); list_del(&sctio->srr_list_entry); qlt_send_term_exchange(vha, sctio->cmd, - &sctio->cmd->atio, 1); + &sctio->cmd->atio, 1, 0); kfree(sctio); } } @@ -5124,7 +5145,7 @@ static int __qlt_send_busy(struct scsi_qla_host *vha, atio->u.isp24.fcp_hdr.s_id); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); if (!sess) { - qlt_send_term_exchange(vha, NULL, atio, 1); + qlt_send_term_exchange(vha, NULL, atio, 1, 0); return 0; } /* Sending marker isn't necessary, since we called from ISR */ @@ -5407,7 +5428,7 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ qlt_send_busy(vha, atio, SAM_STAT_BUSY); #else - qlt_send_term_exchange(vha, NULL, atio, 1); + qlt_send_term_exchange(vha, NULL, atio, 1, 0); #endif if (!ha_locked) @@ -5524,7 +5545,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ qlt_send_busy(vha, atio, 0); #else - qlt_send_term_exchange(vha, NULL, atio, 1); + qlt_send_term_exchange(vha, NULL, atio, 1, 0); #endif } else { if (tgt->tgt_stop) { @@ -5533,7 +5554,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) "command to target, sending TERM " "EXCHANGE for rsp\n"); qlt_send_term_exchange(vha, NULL, - atio, 1); + atio, 1, 0); } else { ql_dbg(ql_dbg_tgt, vha, 0xe060, "qla_target(%d): Unable to send " @@ -5961,7 +5982,7 @@ static void qlt_tmr_work(struct qla_tgt *tgt, return; out_term: - qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 0); + qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0); if (sess) ha->tgt.tgt_ops->put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index 71b2865ba3c8..22a6a767fe07 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -943,6 +943,36 @@ struct qla_tgt_sess { qlt_plogi_ack_t *plogi_link[QLT_PLOGI_LINK_MAX]; }; +typedef enum { + /* + * BIT_0 - Atio Arrival / schedule to work + * BIT_1 - qlt_do_work + * BIT_2 - qlt_do work failed + * BIT_3 - xfer rdy/tcm_qla2xxx_write_pending + * BIT_4 - read respond/tcm_qla2xx_queue_data_in + * BIT_5 - status respond / tcm_qla2xx_queue_status + * BIT_6 - tcm request to abort/Term exchange. + * pre_xmit_response->qlt_send_term_exchange + * BIT_7 - SRR received (qlt_handle_srr->qlt_xmit_response) + * BIT_8 - SRR received (qlt_handle_srr->qlt_rdy_to_xfer) + * BIT_9 - SRR received (qla_handle_srr->qlt_send_term_exchange) + * BIT_10 - Data in - hanlde_data->tcm_qla2xxx_handle_data + + * BIT_12 - good completion - qlt_ctio_do_completion -->free_cmd + * BIT_13 - Bad completion - + * qlt_ctio_do_completion --> qlt_term_ctio_exchange + * BIT_14 - Back end data received/sent. + * BIT_15 - SRR prepare ctio + * BIT_16 - complete free + * BIT_17 - flush - qlt_abort_cmd_on_host_reset + * BIT_18 - completion w/abort status + * BIT_19 - completion w/unknown status + * BIT_20 - tcm_qla2xxx_free_cmd + */ + CMD_FLAG_DATA_WORK = BIT_11, + CMD_FLAG_DATA_WORK_FREE = BIT_21, +} cmd_flags_t; + struct qla_tgt_cmd { struct se_cmd se_cmd; struct qla_tgt_sess *sess; @@ -952,6 +982,7 @@ struct qla_tgt_cmd { /* Sense buffer that will be mapped into outgoing status */ unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; + spinlock_t cmd_lock; /* to save extra sess dereferences */ unsigned int conf_compl_supported:1; unsigned int sg_mapped:1; @@ -986,30 +1017,8 @@ struct qla_tgt_cmd { uint64_t jiffies_at_alloc; uint64_t jiffies_at_free; - /* BIT_0 - Atio Arrival / schedule to work - * BIT_1 - qlt_do_work - * BIT_2 - qlt_do work failed - * BIT_3 - xfer rdy/tcm_qla2xxx_write_pending - * BIT_4 - read respond/tcm_qla2xx_queue_data_in - * BIT_5 - status respond / tcm_qla2xx_queue_status - * BIT_6 - tcm request to abort/Term exchange. - * pre_xmit_response->qlt_send_term_exchange - * BIT_7 - SRR received (qlt_handle_srr->qlt_xmit_response) - * BIT_8 - SRR received (qlt_handle_srr->qlt_rdy_to_xfer) - * BIT_9 - SRR received (qla_handle_srr->qlt_send_term_exchange) - * BIT_10 - Data in - hanlde_data->tcm_qla2xxx_handle_data - * BIT_11 - Data actually going to TCM : tcm_qla2xx_handle_data_work - * BIT_12 - good completion - qlt_ctio_do_completion -->free_cmd - * BIT_13 - Bad completion - - * qlt_ctio_do_completion --> qlt_term_ctio_exchange - * BIT_14 - Back end data received/sent. - * BIT_15 - SRR prepare ctio - * BIT_16 - complete free - * BIT_17 - flush - qlt_abort_cmd_on_host_reset - * BIT_18 - completion w/abort status - * BIT_19 - completion w/unknown status - */ - uint32_t cmd_flags; + + cmd_flags_t cmd_flags; }; struct qla_tgt_sess_work_param { @@ -1148,7 +1157,7 @@ static inline void sid_to_portid(const uint8_t *s_id, port_id_t *p) extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *); extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); -extern void qlt_abort_cmd(struct qla_tgt_cmd *); +extern int qlt_abort_cmd(struct qla_tgt_cmd *); extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index faf0a126627f..3eecdd1bc6fb 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -298,6 +298,10 @@ static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) { cmd->vha->tgt_counters.core_qla_free_cmd++; cmd->cmd_in_wq = 1; + + BUG_ON(cmd->cmd_flags & BIT_20); + cmd->cmd_flags |= BIT_20; + INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); } @@ -374,6 +378,20 @@ static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); + + if (cmd->aborted) { + /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task + * can get ahead of this cmd. tcm_qla2xxx_aborted_task + * already kick start the free. + */ + pr_debug("write_pending aborted cmd[%p] refcount %d " + "transport_state %x, t_state %x, se_cmd_flags %x\n", + cmd,cmd->se_cmd.cmd_kref.refcount.counter, + cmd->se_cmd.transport_state, + cmd->se_cmd.t_state, + cmd->se_cmd.se_cmd_flags); + return 0; + } cmd->cmd_flags |= BIT_3; cmd->bufflen = se_cmd->data_length; cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); @@ -405,7 +423,7 @@ static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, - 3 * HZ); + 50); return 0; } spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); @@ -465,13 +483,25 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, static void tcm_qla2xxx_handle_data_work(struct work_struct *work) { struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); + unsigned long flags; /* * Ensure that the complete FCP WRITE payload has been received. * Otherwise return an exception via CHECK_CONDITION status. */ cmd->cmd_in_wq = 0; - cmd->cmd_flags |= BIT_11; + + spin_lock_irqsave(&cmd->cmd_lock, flags); + cmd->cmd_flags |= CMD_FLAG_DATA_WORK; + if (cmd->aborted) { + cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + + tcm_qla2xxx_free_cmd(cmd); + return; + } + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + cmd->vha->tgt_counters.qla_core_ret_ctio++; if (!cmd->write_data_transferred) { /* @@ -546,6 +576,20 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); + if (cmd->aborted) { + /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task + * can get ahead of this cmd. tcm_qla2xxx_aborted_task + * already kick start the free. + */ + pr_debug("queue_data_in aborted cmd[%p] refcount %d " + "transport_state %x, t_state %x, se_cmd_flags %x\n", + cmd,cmd->se_cmd.cmd_kref.refcount.counter, + cmd->se_cmd.transport_state, + cmd->se_cmd.t_state, + cmd->se_cmd.se_cmd_flags); + return 0; + } + cmd->cmd_flags |= BIT_4; cmd->bufflen = se_cmd->data_length; cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); @@ -637,11 +681,34 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) qlt_xmit_tm_rsp(mcmd); } + +#define DATA_WORK_NOT_FREE(_flags) \ + (( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \ + CMD_FLAG_DATA_WORK) static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); - qlt_abort_cmd(cmd); + unsigned long flags; + + if (qlt_abort_cmd(cmd)) + return; + + spin_lock_irqsave(&cmd->cmd_lock, flags); + if ((cmd->state == QLA_TGT_STATE_NEW)|| + ((cmd->state == QLA_TGT_STATE_DATA_IN) && + DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) { + + cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + /* Cmd have not reached firmware. + * Use this trigger to free it. */ + tcm_qla2xxx_free_cmd(cmd); + return; + } + spin_unlock_irqrestore(&cmd->cmd_lock, flags); + return; + } static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, -- cgit v1.2.3 From 59a557be385b66c1da20e9cfc6ff6c2e676c6804 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 28 Jan 2016 17:54:33 +0100 Subject: net: moxart: use correct accessors for DMA memory The moxart ethernet driver confuses coherent DMA buffers with MMIO registers. moxart_ether.c: In function 'moxart_mac_setup_desc_ring': moxart_ether.c:146:428: error: passing argument 1 of '__fswab32' makes integer from pointer without a cast [-Werror=int-conversion] moxart_ether.c:74:39: warning: incorrect type in argument 3 (different address spaces) moxart_ether.c:74:39: expected void *cpu_addr moxart_ether.c:74:39: got void [noderef] *tx_desc_base This leaves the basic logic alone and uses normal pointers for the virtual address of the descriptor. As we cannot use readl/writel to access them, we also introduce our own moxart_desc_read moxart_desc_write helpers that perform the same endianess swap as the original code, but without the address space conversion. The barriers are made explicit here where needed: Even in the worst-case scenario, we just have to use a rmb() after checking ownership so we don't read any input data before we are sure it is value, and we use wmb() before transferring ownership back to the device. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/moxa/moxart_ether.c | 46 +++++++++++++++++++++----------- drivers/net/ethernet/moxa/moxart_ether.h | 4 +-- 2 files changed, 32 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index a10c928bbd6b..00cfd95ca59d 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -28,6 +28,16 @@ #include "moxart_ether.h" +static inline void moxart_desc_write(u32 data, u32 *desc) +{ + *desc = cpu_to_le32(data); +} + +static inline u32 moxart_desc_read(u32 *desc) +{ + return le32_to_cpu(*desc); +} + static inline void moxart_emac_write(struct net_device *ndev, unsigned int reg, unsigned long value) { @@ -112,7 +122,7 @@ static void moxart_mac_enable(struct net_device *ndev) static void moxart_mac_setup_desc_ring(struct net_device *ndev) { struct moxart_mac_priv_t *priv = netdev_priv(ndev); - void __iomem *desc; + void *desc; int i; for (i = 0; i < TX_DESC_NUM; i++) { @@ -121,7 +131,7 @@ static void moxart_mac_setup_desc_ring(struct net_device *ndev) priv->tx_buf[i] = priv->tx_buf_base + priv->tx_buf_size * i; } - writel(TX_DESC1_END, desc + TX_REG_OFFSET_DESC1); + moxart_desc_write(TX_DESC1_END, desc + TX_REG_OFFSET_DESC1); priv->tx_head = 0; priv->tx_tail = 0; @@ -129,8 +139,8 @@ static void moxart_mac_setup_desc_ring(struct net_device *ndev) for (i = 0; i < RX_DESC_NUM; i++) { desc = priv->rx_desc_base + i * RX_REG_DESC_SIZE; memset(desc, 0, RX_REG_DESC_SIZE); - writel(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0); - writel(RX_BUF_SIZE & RX_DESC1_BUF_SIZE_MASK, + moxart_desc_write(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0); + moxart_desc_write(RX_BUF_SIZE & RX_DESC1_BUF_SIZE_MASK, desc + RX_REG_OFFSET_DESC1); priv->rx_buf[i] = priv->rx_buf_base + priv->rx_buf_size * i; @@ -141,12 +151,12 @@ static void moxart_mac_setup_desc_ring(struct net_device *ndev) if (dma_mapping_error(&ndev->dev, priv->rx_mapping[i])) netdev_err(ndev, "DMA mapping error\n"); - writel(priv->rx_mapping[i], + moxart_desc_write(priv->rx_mapping[i], desc + RX_REG_OFFSET_DESC2 + RX_DESC2_ADDRESS_PHYS); - writel(priv->rx_buf[i], + moxart_desc_write((uintptr_t)priv->rx_buf[i], desc + RX_REG_OFFSET_DESC2 + RX_DESC2_ADDRESS_VIRT); } - writel(RX_DESC1_END, desc + RX_REG_OFFSET_DESC1); + moxart_desc_write(RX_DESC1_END, desc + RX_REG_OFFSET_DESC1); priv->rx_head = 0; @@ -201,14 +211,15 @@ static int moxart_rx_poll(struct napi_struct *napi, int budget) napi); struct net_device *ndev = priv->ndev; struct sk_buff *skb; - void __iomem *desc; + void *desc; unsigned int desc0, len; int rx_head = priv->rx_head; int rx = 0; while (rx < budget) { desc = priv->rx_desc_base + (RX_REG_DESC_SIZE * rx_head); - desc0 = readl(desc + RX_REG_OFFSET_DESC0); + desc0 = moxart_desc_read(desc + RX_REG_OFFSET_DESC0); + rmb(); /* ensure desc0 is up to date */ if (desc0 & RX_DESC0_DMA_OWN) break; @@ -250,7 +261,8 @@ static int moxart_rx_poll(struct napi_struct *napi, int budget) priv->stats.multicast++; rx_next: - writel(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0); + wmb(); /* prevent setting ownership back too early */ + moxart_desc_write(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0); rx_head = RX_NEXT(rx_head); priv->rx_head = rx_head; @@ -310,7 +322,7 @@ static irqreturn_t moxart_mac_interrupt(int irq, void *dev_id) static int moxart_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev) { struct moxart_mac_priv_t *priv = netdev_priv(ndev); - void __iomem *desc; + void *desc; unsigned int len; unsigned int tx_head = priv->tx_head; u32 txdes1; @@ -319,11 +331,12 @@ static int moxart_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev) desc = priv->tx_desc_base + (TX_REG_DESC_SIZE * tx_head); spin_lock_irq(&priv->txlock); - if (readl(desc + TX_REG_OFFSET_DESC0) & TX_DESC0_DMA_OWN) { + if (moxart_desc_read(desc + TX_REG_OFFSET_DESC0) & TX_DESC0_DMA_OWN) { net_dbg_ratelimited("no TX space for packet\n"); priv->stats.tx_dropped++; goto out_unlock; } + rmb(); /* ensure data is only read that had TX_DESC0_DMA_OWN cleared */ len = skb->len > TX_BUF_SIZE ? TX_BUF_SIZE : skb->len; @@ -337,9 +350,9 @@ static int moxart_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev) priv->tx_len[tx_head] = len; priv->tx_skb[tx_head] = skb; - writel(priv->tx_mapping[tx_head], + moxart_desc_write(priv->tx_mapping[tx_head], desc + TX_REG_OFFSET_DESC2 + TX_DESC2_ADDRESS_PHYS); - writel(skb->data, + moxart_desc_write((uintptr_t)skb->data, desc + TX_REG_OFFSET_DESC2 + TX_DESC2_ADDRESS_VIRT); if (skb->len < ETH_ZLEN) { @@ -354,8 +367,9 @@ static int moxart_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev) txdes1 = TX_DESC1_LTS | TX_DESC1_FTS | (len & TX_DESC1_BUF_SIZE_MASK); if (tx_head == TX_DESC_NUM_MASK) txdes1 |= TX_DESC1_END; - writel(txdes1, desc + TX_REG_OFFSET_DESC1); - writel(TX_DESC0_DMA_OWN, desc + TX_REG_OFFSET_DESC0); + moxart_desc_write(txdes1, desc + TX_REG_OFFSET_DESC1); + wmb(); /* flush descriptor before transferring ownership */ + moxart_desc_write(TX_DESC0_DMA_OWN, desc + TX_REG_OFFSET_DESC0); /* start to send packet */ writel(0xffffffff, priv->base + REG_TX_POLL_DEMAND); diff --git a/drivers/net/ethernet/moxa/moxart_ether.h b/drivers/net/ethernet/moxa/moxart_ether.h index 2be9280d608c..93a9563ac7c6 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.h +++ b/drivers/net/ethernet/moxa/moxart_ether.h @@ -300,7 +300,7 @@ struct moxart_mac_priv_t { dma_addr_t rx_base; dma_addr_t rx_mapping[RX_DESC_NUM]; - void __iomem *rx_desc_base; + void *rx_desc_base; unsigned char *rx_buf_base; unsigned char *rx_buf[RX_DESC_NUM]; unsigned int rx_head; @@ -308,7 +308,7 @@ struct moxart_mac_priv_t { dma_addr_t tx_base; dma_addr_t tx_mapping[TX_DESC_NUM]; - void __iomem *tx_desc_base; + void *tx_desc_base; unsigned char *tx_buf_base; unsigned char *tx_buf[RX_DESC_NUM]; unsigned int tx_head; -- cgit v1.2.3 From be1faa92e83b1252d9200c59d8c98aab44463f1e Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Thu, 28 Jan 2016 16:54:37 -0500 Subject: net: dsa: mv88e6xxx: fix port VLAN maps Currently the port based VLAN maps should be configured to allow every port to egress frames on all other ports, except themselves. The debugfs interface shows that they are misconfigured. For instance, a 7-port switch has the following content in the related register 0x06: GLOBAL GLOBAL2 SERDES 0 1 2 3 4 5 6 ... 6: 1fa4 1f0f 4 7f 7e 7d 7c 7b 7a 79 ... This means that port 3 is allowed to talk to port 2-6, but cannot talk to ports 0 and 1. With this fix, port 3 can correctly talk to all ports except 3 itself: GLOBAL GLOBAL2 SERDES 0 1 2 3 4 5 6 ... 6: 1fa4 1f0f 4 7e 7d 7b 77 6f 5f 3f ... Fixes: ede8098d0fef ("net: dsa: mv88e6xxx: bridges do not need an FID") Reported-by: Kevin Smith Signed-off-by: Vivien Didelot Reviewed-by: Andrew Lunn Tested-by: Kevin Smith Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 9cc73bf0a081..cf34681af4f6 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -2163,7 +2163,8 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port) * database, and allow every port to egress frames on all other ports. */ reg = BIT(ps->num_ports) - 1; /* all ports */ - ret = _mv88e6xxx_port_vlan_map_set(ds, port, reg & ~port); + reg &= ~BIT(port); /* except itself */ + ret = _mv88e6xxx_port_vlan_map_set(ds, port, reg); if (ret) goto abort; -- cgit v1.2.3 From 7256eac13b0e6884355cf40f75db05785d18f5da Mon Sep 17 00:00:00 2001 From: Li RongQing Date: Fri, 29 Jan 2016 09:43:47 +0800 Subject: vxlan: fix a out of bounds access in __vxlan_find_mac The size of all_zeros_mac is 6 byte, but eth_hash() will access the 8 byte, and KASan reported the below bug: [ 8596.479031] BUG: KASan: out of bounds access in __vxlan_find_mac+0x24/0x100 at addr ffffffff841514c0 [ 8596.487647] Read of size 8 by task ip/52820 [ 8596.490818] Address belongs to variable all_zeros_mac+0x0/0x40 [ 8596.496051] CPU: 0 PID: 52820 Comm: ip Tainted: G WC 4.1.15 #1 [ 8596.503520] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 02/10/2014 [ 8596.509365] ffffffff841514c0 ffff88007450f0b8 ffffffff822fa5e1 0000000000000032 [ 8596.516112] ffff88007450f150 ffff88007450f138 ffffffff812dd58c ffff88007450f1d8 [ 8596.522856] ffffffff81113b80 0000000000000282 0000000000000001 ffffffff8101ee4d [ 8596.529599] Call Trace: [ 8596.530858] [] dump_stack+0x4f/0x7b [ 8596.535080] [] kasan_report_error+0x3bc/0x3f0 [ 8596.540258] [] ? __lock_acquire+0x90/0x2140 [ 8596.545245] [] ? save_stack_trace+0x2d/0x80 [ 8596.550234] [] kasan_report+0x40/0x50 [ 8596.554647] [] ? __vxlan_find_mac+0x24/0x100 [ 8596.559729] [] __asan_load8+0x69/0xa0 [ 8596.564141] [] __vxlan_find_mac+0x24/0x100 [ 8596.569033] [] vxlan_fdb_create+0x9d/0x570 it can be fixed by enlarging the all_zeros_mac to 8 byte, although it is harmless; eth_hash() will be called in other place with the memory which is larger and equal to 8 byte. Signed-off-by: Li RongQing Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index a85b1fcb3130..65439188c582 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -73,7 +73,7 @@ MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN"); static int vxlan_net_id; static struct rtnl_link_ops vxlan_link_ops; -static const u8 all_zeros_mac[ETH_ALEN]; +static const u8 all_zeros_mac[ETH_ALEN + 2]; static int vxlan_sock_add(struct vxlan_dev *vxlan); -- cgit v1.2.3 From 84092996673211f16ef3b942a191d7952e9dfea9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:10 +0100 Subject: net: davinci_cpdma: use dma_addr_t for DMA address The davinci_cpdma mixes up physical addresses as seen from the CPU and DMA addresses as seen from a DMA master, since it can operate on both normal memory or an on-chip buffer. If dma_addr_t is different from phys_addr_t, this means we get a compile-time warning about the type mismatch: ethernet/ti/davinci_cpdma.c: In function 'cpdma_desc_pool_create': ethernet/ti/davinci_cpdma.c:182:48: error: passing argument 3 of 'dma_alloc_coherent' from incompatible pointer type [-Werror=incompatible-pointer-types] pool->cpumap = dma_alloc_coherent(dev, size, &pool->phys, In file included from ethernet/ti/davinci_cpdma.c:21:0: dma-mapping.h:398:21: note: expected 'dma_addr_t * {aka long long unsigned int *}' but argument is of type 'phys_addr_t * {aka unsigned int *}' static inline void *dma_alloc_coherent(struct device *dev, size_t size, This slightly restructures the code so the address we use for mapping RAM into a DMA address is always a dma_addr_t, avoiding the warning. The code is correct even if both types are 32-bit because the DMA master in this device only supports 32-bit addressing anyway, independent of the types that are used. We still assign this value to pool->phys, and that is wrong if the driver is ever used with an IOMMU, but that value appears to be never used, so there is no problem really. I've added a couple of comments about where we do things that are slightly violating the API. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_cpdma.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 657b65bf5cac..18bf3a8fdc50 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -82,7 +82,7 @@ struct cpdma_desc { struct cpdma_desc_pool { phys_addr_t phys; - u32 hw_addr; + dma_addr_t hw_addr; void __iomem *iomap; /* ioremap map */ void *cpumap; /* dma_alloc map */ int desc_size, mem_size; @@ -152,7 +152,7 @@ struct cpdma_chan { * abstract out these details */ static struct cpdma_desc_pool * -cpdma_desc_pool_create(struct device *dev, u32 phys, u32 hw_addr, +cpdma_desc_pool_create(struct device *dev, u32 phys, dma_addr_t hw_addr, int size, int align) { int bitmap_size; @@ -176,13 +176,13 @@ cpdma_desc_pool_create(struct device *dev, u32 phys, u32 hw_addr, if (phys) { pool->phys = phys; - pool->iomap = ioremap(phys, size); + pool->iomap = ioremap(phys, size); /* should be memremap? */ pool->hw_addr = hw_addr; } else { - pool->cpumap = dma_alloc_coherent(dev, size, &pool->phys, + pool->cpumap = dma_alloc_coherent(dev, size, &pool->hw_addr, GFP_KERNEL); - pool->iomap = pool->cpumap; - pool->hw_addr = pool->phys; + pool->iomap = (void __iomem __force *)pool->cpumap; + pool->phys = pool->hw_addr; /* assumes no IOMMU, don't use this value */ } if (pool->iomap) -- cgit v1.2.3 From 747a11279a442b913a57bf38934879babab3b58b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:11 +0100 Subject: net: hp100: remove unnecessary #ifdefs Building the hp100 ethernet driver causes warnings when both the PCI and EISA drivers are disabled: ethernet/hp/hp100.c: In function 'hp100_module_init': ethernet/hp/hp100.c:3047:2: warning: label 'out3' defined but not used [-Wunused-label] ethernet/hp/hp100.c: At top level: ethernet/hp/hp100.c:2828:13: warning: 'cleanup_dev' defined but not used [-Wunused-function] We can easily avoid the warnings and make the driver look slightly nicer by removing the #ifdefs that check for the CONFIG_PCI and CONFIG_EISA, as all the registration functions are designed to have no effect when the buses are disabled. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/hp/hp100.c | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/hp/hp100.c b/drivers/net/ethernet/hp/hp100.c index 1d5c3e16d8f4..3daf2d4a7ca0 100644 --- a/drivers/net/ethernet/hp/hp100.c +++ b/drivers/net/ethernet/hp/hp100.c @@ -194,7 +194,6 @@ static const char *hp100_isa_tbl[] = { }; #endif -#ifdef CONFIG_EISA static struct eisa_device_id hp100_eisa_tbl[] = { { "HWPF180" }, /* HP J2577 rev A */ { "HWP1920" }, /* HP 27248B */ @@ -205,9 +204,7 @@ static struct eisa_device_id hp100_eisa_tbl[] = { { "" } /* Mandatory final entry ! */ }; MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl); -#endif -#ifdef CONFIG_PCI static const struct pci_device_id hp100_pci_tbl[] = { {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,}, @@ -219,7 +216,6 @@ static const struct pci_device_id hp100_pci_tbl[] = { {} /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, hp100_pci_tbl); -#endif static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO; static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX; @@ -2842,7 +2838,6 @@ static void cleanup_dev(struct net_device *d) free_netdev(d); } -#ifdef CONFIG_EISA static int hp100_eisa_probe(struct device *gendev) { struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private)); @@ -2884,9 +2879,7 @@ static struct eisa_driver hp100_eisa_driver = { .remove = hp100_eisa_remove, } }; -#endif -#ifdef CONFIG_PCI static int hp100_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -2955,7 +2948,6 @@ static struct pci_driver hp100_pci_driver = { .probe = hp100_pci_probe, .remove = hp100_pci_remove, }; -#endif /* * module section @@ -3032,23 +3024,17 @@ static int __init hp100_module_init(void) err = hp100_isa_init(); if (err && err != -ENODEV) goto out; -#ifdef CONFIG_EISA err = eisa_driver_register(&hp100_eisa_driver); if (err && err != -ENODEV) goto out2; -#endif -#ifdef CONFIG_PCI err = pci_register_driver(&hp100_pci_driver); if (err && err != -ENODEV) goto out3; -#endif out: return err; out3: -#ifdef CONFIG_EISA eisa_driver_unregister (&hp100_eisa_driver); out2: -#endif hp100_isa_cleanup(); goto out; } @@ -3057,12 +3043,8 @@ static int __init hp100_module_init(void) static void __exit hp100_module_exit(void) { hp100_isa_cleanup(); -#ifdef CONFIG_EISA eisa_driver_unregister (&hp100_eisa_driver); -#endif -#ifdef CONFIG_PCI pci_unregister_driver (&hp100_pci_driver); -#endif } module_init(hp100_module_init) -- cgit v1.2.3 From 1f820f538f7396db7fd40684b9c3620816acc5a3 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:12 +0100 Subject: net: bgmac: clarify CONFIG_BCMA dependency The bgmac driver depends on BCMA_HOST_SOC, which is only used when CONFIG_BCMA is enabled. However, it is a bool option and can be set when CONFIG_BCMA=m, and then bgmac can be built-in, leading to an obvious link error: drivers/built-in.o: In function `bgmac_init': :(.init.text+0x7f2c): undefined reference to `__bcma_driver_register' drivers/built-in.o: In function `bgmac_exit': :(.exit.text+0x110a): undefined reference to `bcma_driver_unregister' To avoid this case, we need to depend on both BCMA and BCMA_SOC, as this patch does. I'm also trying to make the dependency more readable by splitting it into three lines, and adding a COMPILE_TEST alternative so we can test-build it in all configurations that support BCMA. The added dependency on FIXED_PHY addresses a related issue where we cannot call fixed_phy_register() when CONFIG_FIXED_PHY=m and CONFIG_BGMAC=y. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig index 8550df189ceb..19f7cd02e085 100644 --- a/drivers/net/ethernet/broadcom/Kconfig +++ b/drivers/net/ethernet/broadcom/Kconfig @@ -151,8 +151,11 @@ config BNX2X_VXLAN config BGMAC tristate "BCMA bus GBit core support" - depends on BCMA_HOST_SOC && HAS_DMA && (BCM47XX || ARCH_BCM_5301X) + depends on BCMA && BCMA_HOST_SOC + depends on HAS_DMA + depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST select PHYLIB + select FIXED_PHY ---help--- This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus. They can be found on BCM47xx SoCs and provide gigabit ethernet. -- cgit v1.2.3 From 57e7c8cef224af166b8ec932b5e383641418c005 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:13 +0100 Subject: net: vxge: avoid unused function warnings When CONFIG_PCI_MSI is disabled, we get warnings about unused functions in the vxge driver: drivers/net/ethernet/neterion/vxge/vxge-main.c:2121:13: warning: 'adaptive_coalesce_tx_interrupts' defined but not used [-Wunused-function] drivers/net/ethernet/neterion/vxge/vxge-main.c:2149:13: warning: 'adaptive_coalesce_rx_interrupts' defined but not used [-Wunused-function] We could add another #ifdef here, but it's nicer to avoid those warnings for good by converting the existing #ifdef to if(IS_ENABLED()), which has the same effect but provides better compile-time coverage in general, and lets the compiler understand better when the function is intentionally unused. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/neterion/vxge/vxge-main.c | 31 ++++++++++---------------- 1 file changed, 12 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c index 50d5604833ed..e0993eba5df3 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-main.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c @@ -2223,8 +2223,6 @@ static irqreturn_t vxge_isr_napi(int irq, void *dev_id) return IRQ_NONE; } -#ifdef CONFIG_PCI_MSI - static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id) { struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id; @@ -2442,16 +2440,13 @@ static void vxge_rem_msix_isr(struct vxgedev *vdev) if (vdev->config.intr_type == MSI_X) pci_disable_msix(vdev->pdev); } -#endif static void vxge_rem_isr(struct vxgedev *vdev) { -#ifdef CONFIG_PCI_MSI - if (vdev->config.intr_type == MSI_X) { + if (IS_ENABLED(CONFIG_PCI_MSI) && + vdev->config.intr_type == MSI_X) { vxge_rem_msix_isr(vdev); - } else -#endif - if (vdev->config.intr_type == INTA) { + } else if (vdev->config.intr_type == INTA) { synchronize_irq(vdev->pdev->irq); free_irq(vdev->pdev->irq, vdev); } @@ -2460,11 +2455,10 @@ static void vxge_rem_isr(struct vxgedev *vdev) static int vxge_add_isr(struct vxgedev *vdev) { int ret = 0; -#ifdef CONFIG_PCI_MSI int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0; int pci_fun = PCI_FUNC(vdev->pdev->devfn); - if (vdev->config.intr_type == MSI_X) + if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) ret = vxge_enable_msix(vdev); if (ret) { @@ -2475,7 +2469,7 @@ static int vxge_add_isr(struct vxgedev *vdev) vdev->config.intr_type = INTA; } - if (vdev->config.intr_type == MSI_X) { + if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) { for (intr_idx = 0; intr_idx < (vdev->no_of_vpath * VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) { @@ -2576,9 +2570,8 @@ static int vxge_add_isr(struct vxgedev *vdev) vdev->vxge_entries[intr_cnt].in_use = 1; vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0]; } -INTA_MODE: -#endif +INTA_MODE: if (vdev->config.intr_type == INTA) { snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge:INTA", vdev->ndev->name); @@ -3889,12 +3882,12 @@ static void vxge_device_config_init(struct vxge_hw_device_config *device_config, if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT) max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT; -#ifndef CONFIG_PCI_MSI - vxge_debug_init(VXGE_ERR, - "%s: This Kernel does not support " - "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME); - *intr_type = INTA; -#endif + if (!IS_ENABLED(CONFIG_PCI_MSI)) { + vxge_debug_init(VXGE_ERR, + "%s: This Kernel does not support " + "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME); + *intr_type = INTA; + } /* Configure whether MSI-X or IRQL. */ switch (*intr_type) { -- cgit v1.2.3 From 8bdb290896d2ff22942c9c9f5bf19909329f3664 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:14 +0100 Subject: net: nb8800: avoid uninitialized variable warning The nb8800_poll() function initializes the 'next' variable in the loop looking for new input data. We know this will be called at least once because 'budget' is a guaranteed to be a positive number when we enter the function, but the compiler doesn't know that and warns when the variable is used later: drivers/net/ethernet/aurora/nb8800.c: In function 'nb8800_poll': drivers/net/ethernet/aurora/nb8800.c:350:21: warning: 'next' may be used uninitialized in this function [-Wmaybe-uninitialized] Changing the 'while() {}' loop to 'do {} while()' makes it obvious to the compiler what is going on so it no longer warns. Signed-off-by: Arnd Bergmann Acked-by: Mans Rullgard Signed-off-by: David S. Miller --- drivers/net/ethernet/aurora/nb8800.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/aurora/nb8800.c b/drivers/net/ethernet/aurora/nb8800.c index ecc4a334c507..f71ab2647a3b 100644 --- a/drivers/net/ethernet/aurora/nb8800.c +++ b/drivers/net/ethernet/aurora/nb8800.c @@ -302,7 +302,7 @@ static int nb8800_poll(struct napi_struct *napi, int budget) nb8800_tx_done(dev); again: - while (work < budget) { + do { struct nb8800_rx_buf *rxb; unsigned int len; @@ -330,7 +330,7 @@ again: rxd->report = 0; last = next; work++; - } + } while (work < budget); if (work) { priv->rx_descs[last].desc.config |= DESC_EOC; -- cgit v1.2.3 From e434e04110704eb91acfecbd0fb8ca8e2da9c29b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 29 Jan 2016 12:39:15 +0100 Subject: net: tg3: avoid uninitialized variable warning The tg3_set_eeprom() function correctly initializes the 'start' variable, but gcc generates a false warning: drivers/net/ethernet/broadcom/tg3.c: In function 'tg3_set_eeprom': drivers/net/ethernet/broadcom/tg3.c:12057:4: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] I have not come up with a way to restructure the code in a way that avoids the warning without making it less readable, so this adds an initialization for the declaration to shut up that warning. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 9293675df7ba..49eea8981332 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -12016,7 +12016,7 @@ static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, int ret; u32 offset, len, b_offset, odd_len; u8 *buf; - __be32 start, end; + __be32 start = 0, end; if (tg3_flag(tp, NO_NVRAM) || eeprom->magic != TG3_EEPROM_MAGIC) -- cgit v1.2.3 From 49a20454e0eb907093ec564d4e8f3832bcbf9d53 Mon Sep 17 00:00:00 2001 From: Cyrille Pitchen Date: Fri, 29 Jan 2016 17:53:33 +0100 Subject: crypto: atmel-aes - remove calls of clk_prepare() from atomic contexts clk_prepare()/clk_unprepare() must not be called within atomic context. This patch calls clk_prepare() once for all from atmel_aes_probe() and clk_unprepare() from atmel_aes_remove(). Then calls of clk_prepare_enable()/clk_disable_unprepare() were replaced by calls of clk_enable()/clk_disable(). Cc: stable@vger.kernel.org Signed-off-by: Cyrille Pitchen Reported-by: Matthias Mayr Signed-off-by: Herbert Xu --- drivers/crypto/atmel-aes.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index 6dd3317ca365..3eb3f1279fb7 100644 --- a/drivers/crypto/atmel-aes.c +++ b/drivers/crypto/atmel-aes.c @@ -400,7 +400,7 @@ static int atmel_aes_hw_init(struct atmel_aes_dev *dd) { int err; - err = clk_prepare_enable(dd->iclk); + err = clk_enable(dd->iclk); if (err) return err; @@ -430,7 +430,7 @@ static int atmel_aes_hw_version_init(struct atmel_aes_dev *dd) dev_info(dd->dev, "version: 0x%x\n", dd->hw_version); - clk_disable_unprepare(dd->iclk); + clk_disable(dd->iclk); return 0; } @@ -448,7 +448,7 @@ static inline bool atmel_aes_is_encrypt(const struct atmel_aes_dev *dd) static inline int atmel_aes_complete(struct atmel_aes_dev *dd, int err) { - clk_disable_unprepare(dd->iclk); + clk_disable(dd->iclk); dd->flags &= ~AES_FLAGS_BUSY; if (dd->is_async) @@ -2091,10 +2091,14 @@ static int atmel_aes_probe(struct platform_device *pdev) goto res_err; } - err = atmel_aes_hw_version_init(aes_dd); + err = clk_prepare(aes_dd->iclk); if (err) goto res_err; + err = atmel_aes_hw_version_init(aes_dd); + if (err) + goto iclk_unprepare; + atmel_aes_get_cap(aes_dd); err = atmel_aes_buff_init(aes_dd); @@ -2127,6 +2131,8 @@ err_algs: err_aes_dma: atmel_aes_buff_cleanup(aes_dd); err_aes_buff: +iclk_unprepare: + clk_unprepare(aes_dd->iclk); res_err: tasklet_kill(&aes_dd->done_task); tasklet_kill(&aes_dd->queue_task); @@ -2155,6 +2161,8 @@ static int atmel_aes_remove(struct platform_device *pdev) atmel_aes_dma_cleanup(aes_dd); atmel_aes_buff_cleanup(aes_dd); + clk_unprepare(aes_dd->iclk); + return 0; } -- cgit v1.2.3 From d81dac3c1c5295c61b15293074ac2bd3254e1875 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 26 Jan 2016 12:25:21 +0300 Subject: iio: inkern: fix a NULL dereference on error In twl4030_bci_probe() there are some failure paths where we call iio_channel_release() with a NULL pointer. (Apparently, that driver can opperate without a valid channel pointer). Let's fix it by adding a NULL check in iio_channel_release(). Fixes: 2202e1fc5a29 ('drivers: power: twl4030_charger: fix link problems when building as module') Signed-off-by: Dan Carpenter Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index c8bad3cf891d..217e9306aa0f 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -351,6 +351,8 @@ EXPORT_SYMBOL_GPL(iio_channel_get); void iio_channel_release(struct iio_channel *channel) { + if (!channel) + return; iio_device_put(channel->indio_dev); kfree(channel); } -- cgit v1.2.3 From 0165c3005fd64f850b1bbfe2fd24b916a161b696 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:05 +0100 Subject: iio: adc: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 605ff42c4631..283ded7747a9 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -175,6 +175,7 @@ config DA9150_GPADC config EXYNOS_ADC tristate "Exynos ADC driver support" depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST) + depends on HAS_IOMEM help Core support for the ADC block found in the Samsung EXYNOS series of SoCs for drivers such as the touchscreen and hwmon to use to share @@ -207,6 +208,7 @@ config INA2XX_ADC config IMX7D_ADC tristate "IMX7D ADC driver" depends on ARCH_MXC || COMPILE_TEST + depends on HAS_IOMEM help Say yes here to build support for IMX7D ADC. @@ -409,6 +411,7 @@ config TWL6030_GPADC config VF610_ADC tristate "Freescale vf610 ADC driver" depends on OF + depends on HAS_IOMEM select IIO_BUFFER select IIO_TRIGGERED_BUFFER help -- cgit v1.2.3 From e884cebf9ea34f559bc78a474f3fccbc285dcb71 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:03 +0100 Subject: staging: iio: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Acked-by: Geert Uytterhoeven Signed-off-by: Jonathan Cameron --- drivers/staging/iio/adc/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig index 94ae4232ee77..c0a977d82657 100644 --- a/drivers/staging/iio/adc/Kconfig +++ b/drivers/staging/iio/adc/Kconfig @@ -6,6 +6,7 @@ menu "Analog to digital converters" config AD7606 tristate "Analog Devices AD7606 ADC driver" depends on GPIOLIB || COMPILE_TEST + depends on HAS_IOMEM select IIO_BUFFER select IIO_TRIGGERED_BUFFER help -- cgit v1.2.3 From ddeb35cbd6221751f0197ffaa9500da31e8337f4 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:15 +0100 Subject: iio: imu: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. While the driver has correct dependencies the select statement will bypass the HAS_IOMEM dependency. So, unbreak the build by rendering it into a real dependency. Signed-off-by: Richard Weinberger Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_mpu6050/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig index 48fbc0bc7e2a..8f8d1370ed8b 100644 --- a/drivers/iio/imu/inv_mpu6050/Kconfig +++ b/drivers/iio/imu/inv_mpu6050/Kconfig @@ -5,9 +5,9 @@ config INV_MPU6050_IIO tristate "Invensense MPU6050 devices" depends on I2C && SYSFS + depends on I2C_MUX select IIO_BUFFER select IIO_TRIGGERED_BUFFER - select I2C_MUX help This driver supports the Invensense MPU6050 devices. This driver can also support MPU6500 in MPU6050 compatibility mode -- cgit v1.2.3 From 431386e783a3a6c8b7707bee32d18c353b8688b2 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Thu, 21 Jan 2016 01:07:31 +0900 Subject: iio: pressure: mpl115: fix temperature offset sign According to the datasheet, the resolusion of temperature sensor is -5.35 counts/C. Temperature ADC is 472 counts at 25C. (https://www.sparkfun.com/datasheets/Sensors/Pressure/MPL115A1.pdf NOTE: This is older revision, but this information is removed from the latest datasheet from nxp somehow) Temp [C] = (Tadc - 472) / -5.35 + 25 = (Tadc - 605.750000) * -0.186915888 So the correct offset is -605.750000. Signed-off-by: Akinobu Mita Acked-by: Peter Meerwald-Stadler Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/mpl115.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/iio/pressure/mpl115.c b/drivers/iio/pressure/mpl115.c index f5ecd6e19f5d..a0d7deeac62f 100644 --- a/drivers/iio/pressure/mpl115.c +++ b/drivers/iio/pressure/mpl115.c @@ -117,7 +117,7 @@ static int mpl115_read_raw(struct iio_dev *indio_dev, *val = ret >> 6; return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: - *val = 605; + *val = -605; *val2 = 750000; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From 7e1da86339f29e445e40d41132c30741df8c19ad Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 16:52:40 +0100 Subject: iio: ade7753: avoid uninitialized data The ade7753_spi_read_reg_16() will either successfully read a value from SPI, or return a failure code without delivering data. However, the ade7753_stop_device() and ade7753_reset() functions use the returned data without checking for an error condition first. Gcc detects this as a possible bug and warns about it: drivers/staging/iio/meter/ade7753.c: In function 'ade7753_remove': drivers/staging/iio/meter/ade7753.c:348:6: error: 'val' may be used uninitialized in this function [-Werror=maybe-uninitialized] val |= BIT(4); /* AD converters can be turned off */ ^ drivers/staging/iio/meter/ade7753.c:345:6: note: 'val' was declared here u16 val; ^ drivers/staging/iio/meter/ade7753.c: In function 'ade7753_probe': drivers/staging/iio/meter/ade7753.c:222:6: error: 'val' may be used uninitialized in this function [-Werror=maybe-uninitialized] In both cases, we can avoids the warning by checking the return code before using the data. Signed-off-by: Arnd Bergmann Signed-off-by: Jonathan Cameron --- drivers/staging/iio/meter/ade7753.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c index f129039bece3..69287108f793 100644 --- a/drivers/staging/iio/meter/ade7753.c +++ b/drivers/staging/iio/meter/ade7753.c @@ -217,8 +217,12 @@ error_ret: static int ade7753_reset(struct device *dev) { u16 val; + int ret; + + ret = ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); + if (ret) + return ret; - ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); val |= BIT(6); /* Software Chip Reset */ return ade7753_spi_write_reg_16(dev, ADE7753_MODE, val); @@ -343,8 +347,12 @@ error_ret: static int ade7753_stop_device(struct device *dev) { u16 val; + int ret; + + ret = ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); + if (ret) + return ret; - ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); val |= BIT(4); /* AD converters can be turned off */ return ade7753_spi_write_reg_16(dev, ADE7753_MODE, val); -- cgit v1.2.3 From 1c319e781e0ecc48228081558f38044a11c7a76e Mon Sep 17 00:00:00 2001 From: Alex Hung Date: Wed, 27 Jan 2016 21:35:00 +0800 Subject: intel-hid: fix incorrect entries in intel_hid_keymap intel_hid_keymap contains a duplicate entry for KEY_HOME and an incorrect HID index for KEY_PAGEDOWN Reported-by: Pavel Bludov Signed-off-by: Alex Hung --- drivers/platform/x86/intel-hid.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c index 20f0ad9bb9f3..e20f23e04c24 100644 --- a/drivers/platform/x86/intel-hid.c +++ b/drivers/platform/x86/intel-hid.c @@ -41,8 +41,7 @@ static const struct key_entry intel_hid_keymap[] = { { KE_KEY, 4, { KEY_HOME } }, { KE_KEY, 5, { KEY_END } }, { KE_KEY, 6, { KEY_PAGEUP } }, - { KE_KEY, 4, { KEY_PAGEDOWN } }, - { KE_KEY, 4, { KEY_HOME } }, + { KE_KEY, 7, { KEY_PAGEDOWN } }, { KE_KEY, 8, { KEY_RFKILL } }, { KE_KEY, 9, { KEY_POWER } }, { KE_KEY, 11, { KEY_SLEEP } }, -- cgit v1.2.3 From b1d353ad3d5835b16724653b33c05124e1b5acf1 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 26 Jan 2016 12:24:25 +0300 Subject: intel_scu_ipcutil: underflow in scu_reg_access() "count" is controlled by the user and it can be negative. Let's prevent that by making it unsigned. You have to have CAP_SYS_RAWIO to call this function so the bug is not as serious as it could be. Fixes: 5369c02d951a ('intel_scu_ipc: Utility driver for intel scu ipc') Signed-off-by: Dan Carpenter Cc: stable@vger.kernel.org Signed-off-by: Darren Hart --- drivers/platform/x86/intel_scu_ipcutil.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c index 02bc5a6343c3..aa454241489c 100644 --- a/drivers/platform/x86/intel_scu_ipcutil.c +++ b/drivers/platform/x86/intel_scu_ipcutil.c @@ -49,7 +49,7 @@ struct scu_ipc_data { static int scu_reg_access(u32 cmd, struct scu_ipc_data *data) { - int count = data->count; + unsigned int count = data->count; if (count == 0 || count == 3 || count > 4) return -EINVAL; -- cgit v1.2.3 From 29efefb9091dc7b58a2ac9d054c92295101e6bb2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 15 Jan 2016 18:35:34 +0100 Subject: watchdog: max63xx: make module's license marker match the header MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The header specifies GPL version 2 only, so make the MODULE_LICENSE string use the respective string for that. Signed-off-by: Uwe Kleine-König Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/max63xx_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/watchdog/max63xx_wdt.c b/drivers/watchdog/max63xx_wdt.c index f36ca4be0720..ac5840d9689a 100644 --- a/drivers/watchdog/max63xx_wdt.c +++ b/drivers/watchdog/max63xx_wdt.c @@ -292,4 +292,4 @@ MODULE_PARM_DESC(nodelay, "Force selection of a timeout setting without initial delay " "(max6373/74 only, default=0)"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3 From 55e071779c79890f43b75d4472243280e91581de Mon Sep 17 00:00:00 2001 From: Sandeep Tripathy Date: Tue, 19 Jan 2016 14:44:49 +0530 Subject: watchdog: sp805: ping fails to abort wdt reset sp805 wdt asserts interrupt for the first expiry and reloads the counter. If wdt interrupt is set and count reaches zero then wdt reset event is generated. To get wdt reset at 't' timeout the driver loads wdt counter with 't/2'. A ping before time 't' *should* prevent wdt reset. Currently if ping is done after 't/2' then wdt interrupt condition gets set. On the next countdown of loadval wdt reset event occurs eventhough wdt was reloaded before the set timeout 't'. This patch clears the interrupt condition on ping. Signed-off-by: Sandeep Tripathy Acked-by: Viresh Kumar Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/sp805_wdt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c index 01d816251302..e7a715e82021 100644 --- a/drivers/watchdog/sp805_wdt.c +++ b/drivers/watchdog/sp805_wdt.c @@ -139,12 +139,11 @@ static int wdt_config(struct watchdog_device *wdd, bool ping) writel_relaxed(UNLOCK, wdt->base + WDTLOCK); writel_relaxed(wdt->load_val, wdt->base + WDTLOAD); + writel_relaxed(INT_MASK, wdt->base + WDTINTCLR); - if (!ping) { - writel_relaxed(INT_MASK, wdt->base + WDTINTCLR); + if (!ping) writel_relaxed(INT_ENABLE | RESET_ENABLE, wdt->base + WDTCONTROL); - } writel_relaxed(LOCK, wdt->base + WDTLOCK); -- cgit v1.2.3 From 99f08ca84156f08b8545f7a5bfedfdd2452c4556 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 19 Jan 2016 15:51:04 +0200 Subject: watchdog: pcwd_usb: fix compilation warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In function ‘usb_pcwd_probe’: drivers/watchdog/pcwd_usb.c:611:12: warning: variable ‘maxp’ set but not used [-Wunused-but-set-variable] int pipe, maxp; Signed-off-by: Tomas Winkler Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/pcwd_usb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c index 1a11aedc4fe8..68952d9ccf83 100644 --- a/drivers/watchdog/pcwd_usb.c +++ b/drivers/watchdog/pcwd_usb.c @@ -608,7 +608,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; struct usb_pcwd_private *usb_pcwd = NULL; - int pipe, maxp; + int pipe; int retval = -ENOMEM; int got_fw_rev; unsigned char fw_rev_major, fw_rev_minor; @@ -641,7 +641,6 @@ static int usb_pcwd_probe(struct usb_interface *interface, /* get a handle to the interrupt data pipe */ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); - maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); /* allocate memory for our device and initialize it */ usb_pcwd = kzalloc(sizeof(struct usb_pcwd_private), GFP_KERNEL); -- cgit v1.2.3 From c75f6c5ac0877e8d9728f680aa324e9adeff91e1 Mon Sep 17 00:00:00 2001 From: Marc Gonzalez Date: Thu, 21 Jan 2016 15:27:07 +0100 Subject: watchdog: tango: rename ARCH_TANGOX to ARCH_TANGO This change was requested by arm-soc maintainer Kevin Hilman because the X in TANGOX is a wildcard. Signed-off-by: Marc Gonzalez Acked-by: Mans Rullgard Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 4f0e7be0da34..e723e0169f88 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -145,7 +145,7 @@ config MENF21BMC_WATCHDOG config TANGOX_WATCHDOG tristate "Sigma Designs SMP86xx/SMP87xx watchdog" select WATCHDOG_CORE - depends on ARCH_TANGOX || COMPILE_TEST + depends on ARCH_TANGO || COMPILE_TEST help Support for the watchdog in Sigma Designs SMP86xx (tango3) and SMP87xx (tango4) family chips. -- cgit v1.2.3 From df1a3e64f79b3e277a22b2e789896f86c63eec1f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 17:06:27 +0100 Subject: watchdog: imgdpc: select WATCHDOG_CORE The imgpdc_wdt driver can be built on all architectures with CONFIG_COMPILE_TEST, but fails if no other watchdog driver is enabled: drivers/watchdog/built-in.o: In function `pdc_wdt_remove': imgpdc_wdt.c:(.text+0x74): undefined reference to `watchdog_unregister_device' This adds the normal 'select WATCHDOG_CORE' that is needed to ensure the driver always builds cleanly. Signed-off-by: Arnd Bergmann Reviewed-by: James Hogan Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index e723e0169f88..0847f2e22e55 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1383,6 +1383,7 @@ config IMGPDC_WDT tristate "Imagination Technologies PDC Watchdog Timer" depends on HAS_IOMEM depends on METAG || MIPS || COMPILE_TEST + select WATCHDOG_CORE help Driver for Imagination Technologies PowerDown Controller Watchdog Timer. -- cgit v1.2.3 From d42d6108711b142804b4710d4215efbf5f9b6e21 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:14 +0100 Subject: watchdog: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 0847f2e22e55..0f6d8515ba4f 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -146,6 +146,7 @@ config TANGOX_WATCHDOG tristate "Sigma Designs SMP86xx/SMP87xx watchdog" select WATCHDOG_CORE depends on ARCH_TANGO || COMPILE_TEST + depends on HAS_IOMEM help Support for the watchdog in Sigma Designs SMP86xx (tango3) and SMP87xx (tango4) family chips. @@ -618,6 +619,7 @@ config DIGICOLOR_WATCHDOG config LPC18XX_WATCHDOG tristate "LPC18xx/43xx Watchdog" depends on ARCH_LPC18XX || COMPILE_TEST + depends on HAS_IOMEM select WATCHDOG_CORE help Say Y here if to include support for the watchdog timer @@ -1374,6 +1376,7 @@ config BCM_KONA_WDT_DEBUG config BCM7038_WDT tristate "BCM7038 Watchdog" select WATCHDOG_CORE + depends on HAS_IOMEM help Watchdog driver for the built-in hardware in Broadcom 7038 SoCs. -- cgit v1.2.3 From e0fea7e7b63108b31c043df0d5754bbd666d05c6 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 17 Nov 2015 16:08:36 +0100 Subject: drm/exynos: fix building without CONFIG_PM_SLEEP The runtime PM operations use the suspend/resume functions even when CONFIG_PM_SLEEP is not set, but this now fails for the exynos DRM driver: exynos_mixer.c:1289:61: error: 'exynos_mixer_resume' undeclared here (not in a function) SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL) This removes the #ifdef and instead marks the functions as __maybe_unused, which does the right thing in all cases and also looks nicer. Signed-off-by: Arnd Bergmann Reviewed-by: Krzysztof Kozlowski Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_mixer.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index b5fbc1cbf024..0a5a60005f7e 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -1289,8 +1289,7 @@ static int mixer_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM_SLEEP -static int exynos_mixer_suspend(struct device *dev) +static int __maybe_unused exynos_mixer_suspend(struct device *dev) { struct mixer_context *ctx = dev_get_drvdata(dev); struct mixer_resources *res = &ctx->mixer_res; @@ -1306,7 +1305,7 @@ static int exynos_mixer_suspend(struct device *dev) return 0; } -static int exynos_mixer_resume(struct device *dev) +static int __maybe_unused exynos_mixer_resume(struct device *dev) { struct mixer_context *ctx = dev_get_drvdata(dev); struct mixer_resources *res = &ctx->mixer_res; @@ -1342,7 +1341,6 @@ static int exynos_mixer_resume(struct device *dev) return 0; } -#endif static const struct dev_pm_ops exynos_mixer_pm_ops = { SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL) -- cgit v1.2.3 From 010848a73fd87a481f263f7322e733f129ac398b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 20 Jan 2016 11:33:37 +0100 Subject: drm: exynos: make PM functions as __maybe_unused The newly added runtime-pm support for exynos-drm encloses the pm functions in an #ifdef, but not the functions that are called from them and nowhere else, which produces warnings: drm/exynos/exynos_drm_dsi.c:733:13: warning: 'exynos_dsi_disable_clock' defined but not used [-Wunused-function] static void exynos_dsi_disable_clock(struct exynos_dsi *dsi) ^ drm/exynos/exynos_drm_dsi.c:1291:13: warning: 'exynos_dsi_disable_irq' defined but not used [-Wunused-function] static void exynos_dsi_disable_irq(struct exynos_dsi *dsi) ^ This removes the #ifdef and instead marks the functions as __maybe_unused, so gcc can silently discard them and all called functions when CONFIG_PM is disabled. Signed-off-by: Arnd Bergmann Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index d84a498ef099..e977a81af2e6 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1906,8 +1906,7 @@ static int exynos_dsi_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int exynos_dsi_suspend(struct device *dev) +static int __maybe_unused exynos_dsi_suspend(struct device *dev) { struct drm_encoder *encoder = dev_get_drvdata(dev); struct exynos_dsi *dsi = encoder_to_dsi(encoder); @@ -1938,7 +1937,7 @@ static int exynos_dsi_suspend(struct device *dev) return 0; } -static int exynos_dsi_resume(struct device *dev) +static int __maybe_unused exynos_dsi_resume(struct device *dev) { struct drm_encoder *encoder = dev_get_drvdata(dev); struct exynos_dsi *dsi = encoder_to_dsi(encoder); @@ -1972,7 +1971,6 @@ err_clk: return ret; } -#endif static const struct dev_pm_ops exynos_dsi_pm_ops = { SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL) -- cgit v1.2.3 From 37e110625eeeaba83e8cb763ab7645f0678c6f8e Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 29 Jan 2016 12:09:31 -0300 Subject: drm/exynos: dp: Fix panel and bridge lookup logic Commit a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support for panel") made the Exynos DP DT binding more consistent since the OF graph could be used to lookup either a panel or a bridge device node. Before that commit, a panel would be looked up using a phandle and a bridge using the OF graph which made the DT binding not consistent. But the patch broke the later case since not finding a panel dev node would cause the driver's to do a probe deferral instead of attempting to lookup a bridge device node associated with the remote endpoint. So instead of returning a -EPROBE_DEFER if a panel is not found, check if there's a bridge and only do a probe deferral if both aren't found. Signed-off-by: Javier Martinez Canillas Tested-by: Michal Suchanek Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_dp_core.c | 55 +++++++++++++++------------------ 1 file changed, 25 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index b79c316c2ad2..673164b331c8 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -1392,7 +1392,7 @@ static const struct component_ops exynos_dp_ops = { static int exynos_dp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *panel_node = NULL, *bridge_node, *endpoint = NULL; + struct device_node *np = NULL, *endpoint = NULL; struct exynos_dp_device *dp; int ret; @@ -1404,41 +1404,36 @@ static int exynos_dp_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dp); /* This is for the backward compatibility. */ - panel_node = of_parse_phandle(dev->of_node, "panel", 0); - if (panel_node) { - dp->panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); + np = of_parse_phandle(dev->of_node, "panel", 0); + if (np) { + dp->panel = of_drm_find_panel(np); + of_node_put(np); if (!dp->panel) return -EPROBE_DEFER; - } else { - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); - if (endpoint) { - panel_node = of_graph_get_remote_port_parent(endpoint); - if (panel_node) { - dp->panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); - if (!dp->panel) - return -EPROBE_DEFER; - } else { - DRM_ERROR("no port node for panel device.\n"); - return -EINVAL; - } - } - } - - if (endpoint) goto out; + } endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); if (endpoint) { - bridge_node = of_graph_get_remote_port_parent(endpoint); - if (bridge_node) { - dp->ptn_bridge = of_drm_find_bridge(bridge_node); - of_node_put(bridge_node); - if (!dp->ptn_bridge) - return -EPROBE_DEFER; - } else - return -EPROBE_DEFER; + np = of_graph_get_remote_port_parent(endpoint); + if (np) { + /* The remote port can be either a panel or a bridge */ + dp->panel = of_drm_find_panel(np); + if (!dp->panel) { + dp->ptn_bridge = of_drm_find_bridge(np); + if (!dp->ptn_bridge) { + of_node_put(np); + return -EPROBE_DEFER; + } + } + of_node_put(np); + } else { + DRM_ERROR("no remote endpoint device node found.\n"); + return -EINVAL; + } + } else { + DRM_ERROR("no port endpoint subnode found.\n"); + return -EINVAL; } out: -- cgit v1.2.3 From d99875eebfebec5432981273fac0547f3e34f2d7 Mon Sep 17 00:00:00 2001 From: Amitoj Kaur Chawla Date: Fri, 22 Jan 2016 23:38:38 +0530 Subject: bus: vexpress-config: Add missing of_node_put for_each_compatible_node performs an of_node_get on each iteration, so to break out of the loop an of_node_put is required. Found using Coccinelle. The semantic patch used for this is as follows: // @@ expression e; local idexpression n; @@ for_each_compatible_node(n, ...) { ... when != of_node_put(n) when != e = n ( return n; + of_node_put(n); ? return ...; ) ... } // Acked-by: Liviu Dudau Signed-off-by: Amitoj Kaur Chawla Signed-off-by: Sudeep Holla --- drivers/bus/vexpress-config.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c index 6575c0fe6a4e..c3cb76b363c6 100644 --- a/drivers/bus/vexpress-config.c +++ b/drivers/bus/vexpress-config.c @@ -192,8 +192,10 @@ static int __init vexpress_config_init(void) /* Need the config devices early, before the "normal" devices... */ for_each_compatible_node(node, NULL, "arm,vexpress,config-bus") { err = vexpress_config_populate(node); - if (err) + if (err) { + of_node_put(node); break; + } } return err; -- cgit v1.2.3 From 329d88da4df9a96da43018aceabd3a06e6a7e7ae Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 27 Jan 2016 12:03:23 -0200 Subject: [media] media: i2c: Don't export ir-kbd-i2c module alias This is a partial revert of commit ed8d1cf07cb16d ("[media] Export I2C module alias information in missing drivers") that exported the module aliases for the I2C drivers that were missing to make autoload to work. But there is a bug report [0] that auto load of the ir-kbd-i2c driver cause the Hauppauge HD-PVR driver to not behave correctly. This is a hdpvr latent bug that was just exposed by ir-kbd-i2c module autoloading working and will also happen if the I2C driver is built-in or a user calls modprobe to load the module and register the driver. But there is a regression experimented by users so until the real bug is fixed, let's not export the module alias for the ir-kbd-i2c driver even when this just masks the actual issue. [0]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=810726 Fixes: ed8d1cf07cb1 ("[media] Export I2C module alias information in missing drivers") Cc: # 4.3+ Signed-off-by: Javier Martinez Canillas --- drivers/media/i2c/ir-kbd-i2c.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c index 830491960add..bf82726fd3f4 100644 --- a/drivers/media/i2c/ir-kbd-i2c.c +++ b/drivers/media/i2c/ir-kbd-i2c.c @@ -478,7 +478,6 @@ static const struct i2c_device_id ir_kbd_id[] = { { "ir_rx_z8f0811_hdpvr", 0 }, { } }; -MODULE_DEVICE_TABLE(i2c, ir_kbd_id); static struct i2c_driver ir_kbd_driver = { .driver = { -- cgit v1.2.3 From 8eee1d3ed5b6fc8e14389567c9a6f53f82bb7224 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 1 Feb 2016 11:33:21 -0500 Subject: libata: fix sff host state machine locking while polling The bulk of ATA host state machine is implemented by ata_sff_hsm_move(). The function is called from either the interrupt handler or, if polling, a work item. Unlike from the interrupt path, the polling path calls the function without holding the host lock and ata_sff_hsm_move() selectively grabs the lock. This is completely broken. If an IRQ triggers while polling is in progress, the two can easily race and end up accessing the hardware and updating state machine state at the same time. This can put the state machine in an illegal state and lead to a crash like the following. kernel BUG at drivers/ata/libata-sff.c:1302! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN Modules linked in: CPU: 1 PID: 10679 Comm: syz-executor Not tainted 4.5.0-rc1+ #300 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88002bd00000 ti: ffff88002e048000 task.ti: ffff88002e048000 RIP: 0010:[] [] ata_sff_hsm_move+0x619/0x1c60 ... Call Trace: [] __ata_sff_port_intr+0x1e1/0x3a0 drivers/ata/libata-sff.c:1584 [] ata_bmdma_port_intr+0x71/0x400 drivers/ata/libata-sff.c:2877 [< inline >] __ata_sff_interrupt drivers/ata/libata-sff.c:1629 [] ata_bmdma_interrupt+0x253/0x580 drivers/ata/libata-sff.c:2902 [] handle_irq_event_percpu+0x108/0x7e0 kernel/irq/handle.c:157 [] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:205 [] handle_edge_irq+0x1e3/0x8d0 kernel/irq/chip.c:623 [< inline >] generic_handle_irq_desc include/linux/irqdesc.h:146 [] handle_irq+0x10c/0x2a0 arch/x86/kernel/irq_64.c:78 [] do_IRQ+0x7d/0x1a0 arch/x86/kernel/irq.c:240 [] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520 [< inline >] rcu_lock_acquire include/linux/rcupdate.h:490 [< inline >] rcu_read_lock include/linux/rcupdate.h:874 [] filemap_map_pages+0x131/0xba0 mm/filemap.c:2145 [< inline >] do_fault_around mm/memory.c:2943 [< inline >] do_read_fault mm/memory.c:2962 [< inline >] do_fault mm/memory.c:3133 [< inline >] handle_pte_fault mm/memory.c:3308 [< inline >] __handle_mm_fault mm/memory.c:3418 [] handle_mm_fault+0x2516/0x49a0 mm/memory.c:3447 [] __do_page_fault+0x376/0x960 arch/x86/mm/fault.c:1238 [] trace_do_page_fault+0xe8/0x420 arch/x86/mm/fault.c:1331 [] do_async_page_fault+0x14/0xd0 arch/x86/kernel/kvm.c:264 [] async_page_fault+0x28/0x30 arch/x86/entry/entry_64.S:986 Fix it by ensuring that the polling path is holding the host lock before entering ata_sff_hsm_move() so that all hardware accesses and state updates are performed under the host lock. Signed-off-by: Tejun Heo Reported-and-tested-by: Dmitry Vyukov Link: http://lkml.kernel.org/g/CACT4Y+b_JsOxJu2EZyEf+mOXORc_zid5V1-pLZSroJVxyWdSpw@mail.gmail.com Cc: stable@vger.kernel.org --- drivers/ata/libata-sff.c | 32 +++++++++++--------------------- 1 file changed, 11 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 608677df4f49..051b6158d1b7 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -997,12 +997,9 @@ static inline int ata_hsm_ok_in_wq(struct ata_port *ap, static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq) { struct ata_port *ap = qc->ap; - unsigned long flags; if (ap->ops->error_handler) { if (in_wq) { - spin_lock_irqsave(ap->lock, flags); - /* EH might have kicked in while host lock is * released. */ @@ -1014,8 +1011,6 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq) } else ata_port_freeze(ap); } - - spin_unlock_irqrestore(ap->lock, flags); } else { if (likely(!(qc->err_mask & AC_ERR_HSM))) ata_qc_complete(qc); @@ -1024,10 +1019,8 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq) } } else { if (in_wq) { - spin_lock_irqsave(ap->lock, flags); ata_sff_irq_on(ap); ata_qc_complete(qc); - spin_unlock_irqrestore(ap->lock, flags); } else ata_qc_complete(qc); } @@ -1048,9 +1041,10 @@ int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, { struct ata_link *link = qc->dev->link; struct ata_eh_info *ehi = &link->eh_info; - unsigned long flags = 0; int poll_next; + lockdep_assert_held(ap->lock); + WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0); /* Make sure ata_sff_qc_issue() does not throw things @@ -1112,14 +1106,6 @@ fsm_start: } } - /* Send the CDB (atapi) or the first data block (ata pio out). - * During the state transition, interrupt handler shouldn't - * be invoked before the data transfer is complete and - * hsm_task_state is changed. Hence, the following locking. - */ - if (in_wq) - spin_lock_irqsave(ap->lock, flags); - if (qc->tf.protocol == ATA_PROT_PIO) { /* PIO data out protocol. * send first data block. @@ -1135,9 +1121,6 @@ fsm_start: /* send CDB */ atapi_send_cdb(ap, qc); - if (in_wq) - spin_unlock_irqrestore(ap->lock, flags); - /* if polling, ata_sff_pio_task() handles the rest. * otherwise, interrupt handler takes over from here. */ @@ -1362,12 +1345,14 @@ static void ata_sff_pio_task(struct work_struct *work) u8 status; int poll_next; + spin_lock_irq(ap->lock); + BUG_ON(ap->sff_pio_task_link == NULL); /* qc can be NULL if timeout occurred */ qc = ata_qc_from_tag(ap, link->active_tag); if (!qc) { ap->sff_pio_task_link = NULL; - return; + goto out_unlock; } fsm_start: @@ -1382,11 +1367,14 @@ fsm_start: */ status = ata_sff_busy_wait(ap, ATA_BUSY, 5); if (status & ATA_BUSY) { + spin_unlock_irq(ap->lock); ata_msleep(ap, 2); + spin_lock_irq(ap->lock); + status = ata_sff_busy_wait(ap, ATA_BUSY, 10); if (status & ATA_BUSY) { ata_sff_queue_pio_task(link, ATA_SHORT_PAUSE); - return; + goto out_unlock; } } @@ -1403,6 +1391,8 @@ fsm_start: */ if (poll_next) goto fsm_start; +out_unlock: + spin_unlock_irq(ap->lock); } /** -- cgit v1.2.3 From 17a2f46c3d8877fe2a0b6ff391d1df30e67892a6 Mon Sep 17 00:00:00 2001 From: Abhilash Jindal Date: Wed, 27 Jan 2016 17:46:02 -0500 Subject: iio: dht11: Use boottime Wall time obtained from ktime_get_real_ns is susceptible to sudden jumps due to user setting the time or due to NTP. Boot time is constantly increasing time better suited for comparing two timestamps. Signed-off-by: Abhilash Jindal Reviewed-by: Harald Geyer Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/dht11.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c index 1165b1c4f9d6..cfc5a051ab9f 100644 --- a/drivers/iio/humidity/dht11.c +++ b/drivers/iio/humidity/dht11.c @@ -117,7 +117,7 @@ static int dht11_decode(struct dht11 *dht11, int offset, int timeres) if (((hum_int + hum_dec + temp_int + temp_dec) & 0xff) != checksum) return -EIO; - dht11->timestamp = ktime_get_real_ns(); + dht11->timestamp = ktime_get_boot_ns(); if (hum_int < 20) { /* DHT22 */ dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) * ((temp_int & 0x80) ? -100 : 100); @@ -145,7 +145,7 @@ static irqreturn_t dht11_handle_irq(int irq, void *data) /* TODO: Consider making the handler safe for IRQ sharing */ if (dht11->num_edges < DHT11_EDGES_PER_READ && dht11->num_edges >= 0) { - dht11->edges[dht11->num_edges].ts = ktime_get_real_ns(); + dht11->edges[dht11->num_edges].ts = ktime_get_boot_ns(); dht11->edges[dht11->num_edges++].value = gpio_get_value(dht11->gpio); @@ -164,7 +164,7 @@ static int dht11_read_raw(struct iio_dev *iio_dev, int ret, timeres; mutex_lock(&dht11->lock); - if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_real_ns()) { + if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boot_ns()) { timeres = ktime_get_resolution_ns(); if (DHT11_DATA_BIT_HIGH < 2 * timeres) { dev_err(dht11->dev, "timeresolution %dns too low\n", @@ -279,7 +279,7 @@ static int dht11_probe(struct platform_device *pdev) return -EINVAL; } - dht11->timestamp = ktime_get_real_ns() - DHT11_DATA_VALID_TIME - 1; + dht11->timestamp = ktime_get_boot_ns() - DHT11_DATA_VALID_TIME - 1; dht11->num_edges = -1; platform_set_drvdata(pdev, iio); -- cgit v1.2.3 From 047a555f95fec4bcb8adfc37eb6fb1026fb3026a Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Sat, 23 Jan 2016 23:06:28 +0900 Subject: bus: uniphier-system-bus: revive tristate prompt At first, commit 4b7f48d395a7 ("bus: uniphier-system-bus: add UniPhier System Bus driver") introduced this driver as a tristate one. Then, commit 326ea45aa827 ("bus: uniphier: allow only built-in driver") temporarily made it boolean in order to fix a link error in case it is compiled as a module. The root cause was fixed by commit b80443c2211c ("of/platform: export of_default_bus_match_table"). Now this driver can really be a module. Signed-off-by: Masahiro Yamada Signed-off-by: Olof Johansson --- drivers/bus/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index 129d47bcc5fc..9a92c072a485 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -132,7 +132,7 @@ config SUNXI_RSB and AC100/AC200 ICs. config UNIPHIER_SYSTEM_BUS - bool "UniPhier System Bus driver" + tristate "UniPhier System Bus driver" depends on ARCH_UNIPHIER && OF default y help -- cgit v1.2.3 From 8d9b39c6499b113ef9218c80682de114beffe7bb Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Mon, 1 Feb 2016 09:06:03 +0100 Subject: Staging: speakup: Fix allyesconfig build on mn10300 mn10300 uses an mmio-driven uart. This is not supported by speakup, so prevent from enabling it. Signed-off-by: Samuel Thibault Signed-off-by: Greg Kroah-Hartman --- drivers/staging/speakup/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/staging/speakup/Kconfig b/drivers/staging/speakup/Kconfig index efd6f4560d3e..7e8037e230b8 100644 --- a/drivers/staging/speakup/Kconfig +++ b/drivers/staging/speakup/Kconfig @@ -1,7 +1,7 @@ menu "Speakup console speech" config SPEAKUP - depends on VT + depends on VT && !MN10300 tristate "Speakup core" ---help--- This is the Speakup screen reader. Think of it as a -- cgit v1.2.3 From e9c8dc8ba96b165ae72daad3b1f27823c3aee628 Mon Sep 17 00:00:00 2001 From: Alexey Klimov Date: Thu, 10 Dec 2015 17:28:37 +0000 Subject: mailbox: pcc: fix channel calculation in get_pcc_channel() This patch fixes the calculation of pcc_chan for non-zero id. After the compiler ignores the (unsigned long) cast the pcc_mbox_channels pointer is type-cast and then the type-cast offset is added which results in address outside of the range leading to the kernel crashing. We might add braces and make it: pcc_chan = (struct mbox_chan *) ((unsigned long) pcc_mbox_channels + (id * sizeof(*pcc_chan))); but let's go with array approach here and use id as index. Tested on Juno board. Signed-off-by: Alexey Klimov Acked-by: Sudeep Holla Acked-by: Ashwin Chaugule Signed-off-by: Jassi Brar --- drivers/mailbox/pcc.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index 45d85aea9955..8f779a1ec99c 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -81,16 +81,10 @@ static struct mbox_controller pcc_mbox_ctrl = {}; */ static struct mbox_chan *get_pcc_channel(int id) { - struct mbox_chan *pcc_chan; - if (id < 0 || id > pcc_mbox_ctrl.num_chans) return ERR_PTR(-ENOENT); - pcc_chan = (struct mbox_chan *) - (unsigned long) pcc_mbox_channels + - (id * sizeof(*pcc_chan)); - - return pcc_chan; + return &pcc_mbox_channels[id]; } /** -- cgit v1.2.3 From 65d3b04a814679a31fe4d5edd19d89dd5b94fd40 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 25 Jan 2016 23:24:09 +0100 Subject: mailbox: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger Signed-off-by: Jassi Brar --- drivers/mailbox/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index 546d05f4358a..b2bbe8659bed 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -81,6 +81,7 @@ config STI_MBOX config MAILBOX_TEST tristate "Mailbox Test Client" depends on OF + depends on HAS_IOMEM help Test client to help with testing new Controller driver implementations. -- cgit v1.2.3 From 41c89159a6ae5472d39ed8bded5b3b4e07a37944 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Fri, 29 Jan 2016 00:21:26 +0100 Subject: mmc: pxamci: fix again read-only gpio detection polarity The commit fixing the conversion of pxamci to slot-gpio API fixed the inverted the logic of the read-only gpio. Unfortunately, the commit was tested on a non-inverted gpio, and not on the inverted one. And the fix did work partially, by luck. This is the remaining missing part of the fix, trivial but still necessary. Fixes: Fixes: 26d49fe71953 ("mmc: pxamci: fix read-only gpio detection polarity") Reported-by: Andrea Adami Tested-by: Andrea Adami Signed-off-by: Robert Jarzmik Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson --- drivers/mmc/host/pxamci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index ce08896b9d69..28a057fae0a1 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -804,7 +804,7 @@ static int pxamci_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro); goto out; } else { - mmc->caps |= host->pdata->gpio_card_ro_invert ? + mmc->caps2 |= host->pdata->gpio_card_ro_invert ? 0 : MMC_CAP2_RO_ACTIVE_HIGH; } -- cgit v1.2.3 From 2df9d58fcc0f20d812f390e0b97df69d70d3152f Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Tue, 2 Feb 2016 19:55:06 +0800 Subject: mmc: sdhci-of-at91: fix pm runtime unbalanced issue in error path The device power usage counter is increased by pm_runtime_get_noresume but isn't decreased in err_add_host error path. Fix this issue by calling pm_runtime_put_noidle() in the error path to restore the device's power usage counter. Signed-off-by: Jisheng Zhang Acked-by: Ludovic Desroches Fixes: f5f17813ae9b ("mmc: sdhci-of-at91: add PM support) Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-of-at91.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c index 7e7d8f0c9438..9cb86fb25976 100644 --- a/drivers/mmc/host/sdhci-of-at91.c +++ b/drivers/mmc/host/sdhci-of-at91.c @@ -217,6 +217,7 @@ static int sdhci_at91_probe(struct platform_device *pdev) pm_runtime_disable: pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); clocks_disable_unprepare: clk_disable_unprepare(priv->gck); clk_disable_unprepare(priv->mainck); -- cgit v1.2.3 From d0be8584b01160eb6f49e77f8e9c1da286bb4ffb Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 4 Jan 2016 03:33:45 +0100 Subject: drm: adv7511: really enable interrupts for EDID detection The interrupts for EDID_READY or DDC_ERROR were never enabled in this driver, so reading EDID always timed out when chip was powered down and interrupts were used. Fix this and also remove clearing the interrupt flags, they are cleared in POWER_DOWN mode anyhow (unlike the interrupt enable flags) according to docs and my tests. Signed-off-by: Wolfram Sang Tested-by: Archit Taneja --- drivers/gpu/drm/i2c/adv7511.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index 533d1e3d4a99..db7435a4517f 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -362,12 +362,19 @@ static void adv7511_power_on(struct adv7511 *adv7511) { adv7511->current_edid_segment = -1; - regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_EDID_READY); - regmap_write(adv7511->regmap, ADV7511_REG_INT(1), - ADV7511_INT1_DDC_ERROR); regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + /* + * Documentation says the INT_ENABLE registers are reset in + * POWER_DOWN mode. My 7511w preserved the bits, however. + * Still, let's be safe and stick to the documentation. + */ + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } /* * Per spec it is allowed to pulse the HDP signal to indicate that the @@ -567,12 +574,14 @@ static int adv7511_get_modes(struct drm_encoder *encoder, /* Reading the EDID only works if the device is powered */ if (!adv7511->powered) { - regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_EDID_READY); - regmap_write(adv7511->regmap, ADV7511_REG_INT(1), - ADV7511_INT1_DDC_ERROR); regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } adv7511->current_edid_segment = -1; } -- cgit v1.2.3 From cd38a33750ace4300ef91b9ad668baf07c3bfd2b Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 4 Jan 2016 03:33:46 +0100 Subject: drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile This register includes a counter which is decremented by the chip on I2C failures. Also, it is reset when powering down. Signed-off-by: Wolfram Sang Reviewed-by: Laurent Pinchart Tested-by: Archit Taneja --- drivers/gpu/drm/i2c/adv7511.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index db7435a4517f..e1756a452d69 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -136,6 +136,7 @@ static bool adv7511_register_volatile(struct device *dev, unsigned int reg) case ADV7511_REG_BKSV(3): case ADV7511_REG_BKSV(4): case ADV7511_REG_DDC_STATUS: + case ADV7511_REG_EDID_READ_CTRL: case ADV7511_REG_BSTATUS(0): case ADV7511_REG_BSTATUS(1): case ADV7511_REG_CHIP_ID_HIGH: -- cgit v1.2.3 From 29ce4ed441d04a8931150f291c0f7d961690ab81 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 4 Jan 2016 03:33:47 +0100 Subject: drm: adv7511: it's HPD, not HDP Fix this typo, consequently used over both files :) Signed-off-by: Wolfram Sang Acked-by: Lars-Peter Clausen Reviewed-by: Laurent Pinchart Tested-by: Archit Taneja --- drivers/gpu/drm/i2c/adv7511.c | 22 +++++++++++----------- drivers/gpu/drm/i2c/adv7511.h | 12 ++++++------ 2 files changed, 17 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index e1756a452d69..a02112ba1c3d 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -378,16 +378,16 @@ static void adv7511_power_on(struct adv7511 *adv7511) } /* - * Per spec it is allowed to pulse the HDP signal to indicate that the + * Per spec it is allowed to pulse the HPD signal to indicate that the * EDID information has changed. Some monitors do this when they wakeup - * from standby or are enabled. When the HDP goes low the adv7511 is + * from standby or are enabled. When the HPD goes low the adv7511 is * reset and the outputs are disabled which might cause the monitor to - * go to standby again. To avoid this we ignore the HDP pin for the + * go to standby again. To avoid this we ignore the HPD pin for the * first few seconds after enabling the output. */ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, - ADV7511_REG_POWER2_HDP_SRC_MASK, - ADV7511_REG_POWER2_HDP_SRC_NONE); + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_NONE); /* * Most of the registers are reset during power down or when HPD is low. @@ -421,9 +421,9 @@ static bool adv7511_hpd(struct adv7511 *adv7511) if (ret < 0) return false; - if (irq0 & ADV7511_INT0_HDP) { + if (irq0 & ADV7511_INT0_HPD) { regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_HDP); + ADV7511_INT0_HPD); return true; } @@ -446,7 +446,7 @@ static int adv7511_irq_process(struct adv7511 *adv7511) regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); - if (irq0 & ADV7511_INT0_HDP && adv7511->encoder) + if (irq0 & ADV7511_INT0_HPD && adv7511->encoder) drm_helper_hpd_irq_event(adv7511->encoder->dev); if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { @@ -648,10 +648,10 @@ adv7511_encoder_detect(struct drm_encoder *encoder, if (adv7511->status == connector_status_connected) status = connector_status_disconnected; } else { - /* Renable HDP sensing */ + /* Renable HPD sensing */ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, - ADV7511_REG_POWER2_HDP_SRC_MASK, - ADV7511_REG_POWER2_HDP_SRC_BOTH); + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_BOTH); } adv7511->status = status; diff --git a/drivers/gpu/drm/i2c/adv7511.h b/drivers/gpu/drm/i2c/adv7511.h index 6599ed538426..38515b30cedf 100644 --- a/drivers/gpu/drm/i2c/adv7511.h +++ b/drivers/gpu/drm/i2c/adv7511.h @@ -90,7 +90,7 @@ #define ADV7511_CSC_ENABLE BIT(7) #define ADV7511_CSC_UPDATE_MODE BIT(5) -#define ADV7511_INT0_HDP BIT(7) +#define ADV7511_INT0_HPD BIT(7) #define ADV7511_INT0_VSYNC BIT(5) #define ADV7511_INT0_AUDIO_FIFO_FULL BIT(4) #define ADV7511_INT0_EDID_READY BIT(2) @@ -157,11 +157,11 @@ #define ADV7511_PACKET_ENABLE_SPARE2 BIT(1) #define ADV7511_PACKET_ENABLE_SPARE1 BIT(0) -#define ADV7511_REG_POWER2_HDP_SRC_MASK 0xc0 -#define ADV7511_REG_POWER2_HDP_SRC_BOTH 0x00 -#define ADV7511_REG_POWER2_HDP_SRC_HDP 0x40 -#define ADV7511_REG_POWER2_HDP_SRC_CEC 0x80 -#define ADV7511_REG_POWER2_HDP_SRC_NONE 0xc0 +#define ADV7511_REG_POWER2_HPD_SRC_MASK 0xc0 +#define ADV7511_REG_POWER2_HPD_SRC_BOTH 0x00 +#define ADV7511_REG_POWER2_HPD_SRC_HPD 0x40 +#define ADV7511_REG_POWER2_HPD_SRC_CEC 0x80 +#define ADV7511_REG_POWER2_HPD_SRC_NONE 0xc0 #define ADV7511_REG_POWER2_TDMS_ENABLE BIT(4) #define ADV7511_REG_POWER2_GATE_INPUT_CLK BIT(0) -- cgit v1.2.3 From 6235f0ecc4ed799169b80f7317c7f974f7415320 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Mon, 1 Feb 2016 17:39:20 +0000 Subject: irqchip/sun4i: Fix compilation outside of arch/arm The Allwinner sunxi specific interrupt controller cannot be compiled for any architecture except arm: drivers/irqchip/irq-sun4i.c:25:26: fatal error: asm/mach/irq.h: No such file or directory compilation terminated. It turns out that this header is actually not needed for the driver, so remove it and allow compilation for other architectures like arm64. Signed-off-by: Andre Przywara Acked-by: Arnd Bergmann Cc: linux-arm-kernel@lists.infradead.org Cc: Jason Cooper Cc: Marc Zyngier Cc: Maxime Ripard Cc: Chen-Yu Tsai Cc: linux-sunxi@googlegroups.com Link: http://lkml.kernel.org/r/1454348370-3816-2-git-send-email-andre.przywara@arm.com Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-sun4i.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c index 0704362f4c82..376b28074e0d 100644 --- a/drivers/irqchip/irq-sun4i.c +++ b/drivers/irqchip/irq-sun4i.c @@ -22,7 +22,6 @@ #include #include -#include #define SUN4I_IRQ_VECTOR_REG 0x00 #define SUN4I_IRQ_PROTECTION_REG 0x08 -- cgit v1.2.3 From c5244987394648913ae1a03879c58058a2fc2cee Mon Sep 17 00:00:00 2001 From: Oded Gabbay Date: Sat, 30 Jan 2016 07:59:33 +0200 Subject: drm/radeon: mask out WC from BO on unsupported arches MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Christian König Reviewed-by: Michel Dänzer Signed-off-by: Oded Gabbay Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_object.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 84d45633d28c..fb6ad143873f 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -33,6 +33,7 @@ #include #include #include +#include #include "radeon.h" #include "radeon_trace.h" @@ -245,6 +246,12 @@ int radeon_bo_create(struct radeon_device *rdev, DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " "better performance thanks to write-combining\n"); bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); +#else + /* For architectures that don't support WC memory, + * mask out the WC flag from the BO + */ + if (!drm_arch_can_wc_memory()) + bo->flags &= ~RADEON_GEM_GTT_WC; #endif radeon_ttm_placement_from_domain(bo, domain); -- cgit v1.2.3 From a187f17f0e15a046aa5d7263b35df55230d92779 Mon Sep 17 00:00:00 2001 From: Oded Gabbay Date: Sat, 30 Jan 2016 07:59:34 +0200 Subject: drm/amdgpu: mask out WC from BO on unsupported arches MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Christian König Reviewed-by: Michel Dänzer Signed-off-by: Oded Gabbay Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index a2a16acee34d..b8fbbd7699e4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -33,6 +33,7 @@ #include #include #include +#include #include "amdgpu.h" #include "amdgpu_trace.h" @@ -261,6 +262,13 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, AMDGPU_GEM_DOMAIN_OA); bo->flags = flags; + + /* For architectures that don't support WC memory, + * mask out the WC flag from the BO + */ + if (!drm_arch_can_wc_memory()) + bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC; + amdgpu_fill_placement_to_bo(bo, placement); /* Kernel allocation are uninterruptible */ r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type, -- cgit v1.2.3 From 1d22a454ecda91c8b8c67ff2b07cdbdf7d26ede1 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 14:42:28 -0500 Subject: drm/amdgpu/gfx8: enable cp inst/reg error interrupts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Enable CP register/instruction error interrupts. Useful for debugging command stream problems. Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 95c0cdfbd1b3..39fa41bcae10 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -3901,6 +3901,8 @@ static int gfx_v8_0_hw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; + amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0); + amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0); gfx_v8_0_cp_enable(adev, false); gfx_v8_0_rlc_stop(adev); gfx_v8_0_cp_compute_fini(adev); @@ -4329,6 +4331,14 @@ static int gfx_v8_0_late_init(void *handle) struct amdgpu_device *adev = (struct amdgpu_device *)handle; int r; + r = amdgpu_irq_get(adev, &adev->gfx.priv_reg_irq, 0); + if (r) + return r; + + r = amdgpu_irq_get(adev, &adev->gfx.priv_inst_irq, 0); + if (r) + return r; + /* requires IBs so do in late init after IB pool is initialized */ r = gfx_v8_0_do_edc_gpr_workarounds(adev); if (r) -- cgit v1.2.3 From ef720532ecc22a76fea4450bcc91ee054cde9bdb Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 14:46:48 -0500 Subject: drm/amdgpu/gfx7: enable cp inst/reg error interrupts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Enable CP register/instruction error interrupts. Useful for debugging command stream problems. Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index 72793f93e2fc..6c76139de1c9 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -4738,6 +4738,22 @@ static int gfx_v7_0_early_init(void *handle) return 0; } +static int gfx_v7_0_late_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int r; + + r = amdgpu_irq_get(adev, &adev->gfx.priv_reg_irq, 0); + if (r) + return r; + + r = amdgpu_irq_get(adev, &adev->gfx.priv_inst_irq, 0); + if (r) + return r; + + return 0; +} + static int gfx_v7_0_sw_init(void *handle) { struct amdgpu_ring *ring; @@ -4890,6 +4906,8 @@ static int gfx_v7_0_hw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; + amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0); + amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0); gfx_v7_0_cp_enable(adev, false); gfx_v7_0_rlc_stop(adev); gfx_v7_0_fini_pg(adev); @@ -5527,7 +5545,7 @@ static int gfx_v7_0_set_powergating_state(void *handle, const struct amd_ip_funcs gfx_v7_0_ip_funcs = { .early_init = gfx_v7_0_early_init, - .late_init = NULL, + .late_init = gfx_v7_0_late_init, .sw_init = gfx_v7_0_sw_init, .sw_fini = gfx_v7_0_sw_fini, .hw_init = gfx_v7_0_hw_init, -- cgit v1.2.3 From d4584ddfc97518a575ed538307e81e73456b8175 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Thu, 28 Jan 2016 17:51:46 +0200 Subject: IB/mlx5: Add CREATE_CQ and CREATE_QP to uverbs_ex_cmd_mask The mlx5_ib driver supports the extended create_cq and create_qp user verbs. In the current mechanism, a vendor supporting an extended uverb should set the appropriate bit in the uverbs_ex_cmd_mask field. Adding the actual support by setting the required bits in order to support features like completion time-stamping and cross-channel. Fixes: 972ecb821379 ('IB/mlx5: Add create_cq extended command') Fixes: ddf9529be19c ('IB/core: Allow setting create flags in QP init attribute') Signed-off-by: Matan Barak Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index ec737e2287fe..6f67412c1296 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2214,7 +2214,9 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev) (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | (1ull << IB_USER_VERBS_CMD_OPEN_QP); dev->ib_dev.uverbs_ex_cmd_mask = - (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE); + (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | + (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | + (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); dev->ib_dev.query_device = mlx5_ib_query_device; dev->ib_dev.query_port = mlx5_ib_query_port; -- cgit v1.2.3 From a168a41c8147fe644f1144031a6ec27a1a13fe37 Mon Sep 17 00:00:00 2001 From: Majd Dibbiny Date: Thu, 28 Jan 2016 17:51:47 +0200 Subject: IB/mlx5: Fix reqlen validation in mlx5_ib_alloc_ucontext Older libraries that don't have all the new req_v2 fields should be able to work as well. Today, if the library uses v2, it will fail to allocate context since the size of reqlen is smaller than the req_v2 size. Fix the validation to be with the original req_v2 size and not the current. Fixes: f72300c56c3b ('IB/mlx5: Expose CQE version to user-space') Signed-off-by: Majd Dibbiny Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 6f67412c1296..03c418ccbc98 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -844,6 +844,8 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, int err; int i; size_t reqlen; + size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, + max_cqe_version); if (!dev->ib_active) return ERR_PTR(-EAGAIN); @@ -854,7 +856,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr); if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) ver = 0; - else if (reqlen >= sizeof(struct mlx5_ib_alloc_ucontext_req_v2)) + else if (reqlen >= min_req_v2) ver = 2; else return ERR_PTR(-EINVAL); -- cgit v1.2.3 From 09f16cf59fbf825130c216c3af189253505dc9d9 Mon Sep 17 00:00:00 2001 From: Majd Dibbiny Date: Thu, 28 Jan 2016 17:51:48 +0200 Subject: IB/mlx5: Fix use of null pointer PD When a Raw Ethernet QP is created, a NULL pointer PD could be used. Fixing that by only using the PD after validating it's valid. smatch also reported this error: drivers/infiniband/hw/mlx5/qp.c:1629 mlx5_ib_create_qp() error: we previously assumed 'pd' could be null (see line 1616) Fixes: 0fb2ed66a14c ('IB/mlx5: Add create and destroy functionality for Raw Packet QP') Signed-off-by: Majd Dibbiny Reported-by: Dan Carpenter Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/qp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 8fb9c27485e1..40bbe962a1ce 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1615,15 +1615,6 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, if (pd) { dev = to_mdev(pd->device); - } else { - /* being cautious here */ - if (init_attr->qp_type != IB_QPT_XRC_TGT && - init_attr->qp_type != MLX5_IB_QPT_REG_UMR) { - pr_warn("%s: no PD for transport %s\n", __func__, - ib_qp_type_str(init_attr->qp_type)); - return ERR_PTR(-EINVAL); - } - dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device); if (init_attr->qp_type == IB_QPT_RAW_PACKET) { if (!pd->uobject) { @@ -1634,6 +1625,15 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, return ERR_PTR(-EINVAL); } } + } else { + /* being cautious here */ + if (init_attr->qp_type != IB_QPT_XRC_TGT && + init_attr->qp_type != MLX5_IB_QPT_REG_UMR) { + pr_warn("%s: no PD for transport %s\n", __func__, + ib_qp_type_str(init_attr->qp_type)); + return ERR_PTR(-EINVAL); + } + dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device); } switch (init_attr->qp_type) { -- cgit v1.2.3 From 01581fb89e5a6d41d06132aefe105a506f04ce1e Mon Sep 17 00:00:00 2001 From: Maor Gottlieb Date: Thu, 28 Jan 2016 17:51:49 +0200 Subject: IB/mlx5: Use MLX5_GET to correctly get end of padding mode MLX5_GET64 was used on end_padding_mode, which is a 2-bit field. This is wrong as the calculated offset is incorrect. Using MLX5_GET instead of MLX5_GET64 to fix that. Fixes: 0fb2ed66a14c ('IB/mlx5: Add create and destroy functionality for Raw Packet QP') Signed-off-by: Maor Gottlieb Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/qp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 40bbe962a1ce..9116bc3988a6 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1036,7 +1036,7 @@ static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev, wq = MLX5_ADDR_OF(rqc, rqc, wq); MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC); MLX5_SET(wq, wq, end_padding_mode, - MLX5_GET64(qpc, qpc, end_padding_mode)); + MLX5_GET(qpc, qpc, end_padding_mode)); MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset)); MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd)); MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr)); -- cgit v1.2.3 From 1c5e08099022942cd530c99f5f292c735acc288f Mon Sep 17 00:00:00 2001 From: Moni Shoua Date: Thu, 28 Jan 2016 17:51:50 +0200 Subject: IB/core: Set correct payload length for RoCEv2 over IPv6 For GSI QP traffic, the count of the udp header bytes was missing from the IPv6 header, fix that. Fixes: 25f40220e56b ('IB/core: Initialize UD header structure with IP and UDP headers') Signed-off-by: Moni Shoua Signed-off-by: Doug Ledford --- drivers/infiniband/core/ud_header.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/core/ud_header.c b/drivers/infiniband/core/ud_header.c index 19837d270278..2116132568e7 100644 --- a/drivers/infiniband/core/ud_header.c +++ b/drivers/infiniband/core/ud_header.c @@ -322,6 +322,8 @@ int ib_ud_header_init(int payload_bytes, int immediate_present, struct ib_ud_header *header) { + size_t udp_bytes = udp_present ? IB_UDP_BYTES : 0; + grh_present = grh_present && !ip_version; memset(header, 0, sizeof *header); @@ -353,7 +355,8 @@ int ib_ud_header_init(int payload_bytes, if (ip_version == 6 || grh_present) { header->grh.ip_version = 6; header->grh.payload_length = - cpu_to_be16((IB_BTH_BYTES + + cpu_to_be16((udp_bytes + + IB_BTH_BYTES + IB_DETH_BYTES + payload_bytes + 4 + /* ICRC */ @@ -362,8 +365,6 @@ int ib_ud_header_init(int payload_bytes, } if (ip_version == 4) { - int udp_bytes = udp_present ? IB_UDP_BYTES : 0; - header->ip4.ver = 4; /* version 4 */ header->ip4.hdr_len = 5; /* 5 words */ header->ip4.tot_len = -- cgit v1.2.3 From ed1f0eeebaeeb7f790e9e7642116a208581e5bfc Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Wed, 3 Feb 2016 01:00:29 +0100 Subject: PNP: Add Haswell-ULT to Intel MCH size workaround Add device ID 0x0a04 for Haswell-ULT to the list of devices with MCH problems. From a Lenovo ThinkPad T440S: [ 0.188604] pnp: PnP ACPI init [ 0.189044] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved [ 0.189048] system 00:00: [mem 0x000c0000-0x000c3fff] could not be reserved [ 0.189050] system 00:00: [mem 0x000c4000-0x000c7fff] could not be reserved [ 0.189052] system 00:00: [mem 0x000c8000-0x000cbfff] could not be reserved [ 0.189054] system 00:00: [mem 0x000cc000-0x000cffff] could not be reserved [ 0.189056] system 00:00: [mem 0x000d0000-0x000d3fff] has been reserved [ 0.189058] system 00:00: [mem 0x000d4000-0x000d7fff] has been reserved [ 0.189060] system 00:00: [mem 0x000d8000-0x000dbfff] has been reserved [ 0.189061] system 00:00: [mem 0x000dc000-0x000dffff] has been reserved [ 0.189063] system 00:00: [mem 0x000e0000-0x000e3fff] could not be reserved [ 0.189065] system 00:00: [mem 0x000e4000-0x000e7fff] could not be reserved [ 0.189067] system 00:00: [mem 0x000e8000-0x000ebfff] could not be reserved [ 0.189069] system 00:00: [mem 0x000ec000-0x000effff] could not be reserved [ 0.189071] system 00:00: [mem 0x000f0000-0x000fffff] could not be reserved [ 0.189073] system 00:00: [mem 0x00100000-0xdf9fffff] could not be reserved [ 0.189075] system 00:00: [mem 0xfec00000-0xfed3ffff] could not be reserved [ 0.189078] system 00:00: [mem 0xfed4c000-0xffffffff] could not be reserved [ 0.189082] system 00:00: Plug and Play ACPI device, IDs PNP0c01 (active) [ 0.189216] system 00:01: [io 0x1800-0x189f] could not be reserved [ 0.189220] system 00:01: [io 0x0800-0x087f] has been reserved [ 0.189222] system 00:01: [io 0x0880-0x08ff] has been reserved [ 0.189224] system 00:01: [io 0x0900-0x097f] has been reserved [ 0.189226] system 00:01: [io 0x0980-0x09ff] has been reserved [ 0.189229] system 00:01: [io 0x0a00-0x0a7f] has been reserved [ 0.189231] system 00:01: [io 0x0a80-0x0aff] has been reserved [ 0.189233] system 00:01: [io 0x0b00-0x0b7f] has been reserved [ 0.189235] system 00:01: [io 0x0b80-0x0bff] has been reserved [ 0.189238] system 00:01: [io 0x15e0-0x15ef] has been reserved [ 0.189240] system 00:01: [io 0x1600-0x167f] has been reserved [ 0.189242] system 00:01: [io 0x1640-0x165f] has been reserved [ 0.189246] system 00:01: [mem 0xf8000000-0xfbffffff] could not be reserved [ 0.189249] system 00:01: [mem 0x00000000-0x00000fff] could not be reserved [ 0.189251] system 00:01: [mem 0xfed1c000-0xfed1ffff] has been reserved [ 0.189254] system 00:01: [mem 0xfed10000-0xfed13fff] has been reserved [ 0.189256] system 00:01: [mem 0xfed18000-0xfed18fff] has been reserved [ 0.189258] system 00:01: [mem 0xfed19000-0xfed19fff] has been reserved [ 0.189261] system 00:01: [mem 0xfed45000-0xfed4bfff] has been reserved [ 0.189264] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active) [....] [ 0.583653] resource sanity check: requesting [mem 0xfed10000-0xfed15fff], which spans more than pnp 00:01 [mem 0xfed10000-0xfed13fff] [ 0.583654] ------------[ cut here ]------------ [ 0.583660] WARNING: CPU: 0 PID: 1 at arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2c5/0x380() [ 0.583661] Info: mapping multiple BARs. Your kernel is fine. [ 0.583662] Modules linked in: [ 0.583666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.3.3-303.fc23.x86_64 #1 [ 0.583668] Hardware name: LENOVO 20AR001GXS/20AR001GXS, BIOS GJET86WW (2.36 ) 12/04/2015 [ 0.583670] 0000000000000000 0000000014cf7e59 ffff880214a1baf8 ffffffff813a625f [ 0.583673] ffff880214a1bb40 ffff880214a1bb30 ffffffff810a07c2 00000000fed10000 [ 0.583675] ffffc90000cb8000 0000000000006000 0000000000000000 ffff8800d6381040 [ 0.583678] Call Trace: [ 0.583683] [] dump_stack+0x44/0x55 [ 0.583686] [] warn_slowpath_common+0x82/0xc0 [ 0.583688] [] warn_slowpath_fmt+0x5c/0x80 [ 0.583692] [] ? iomem_map_sanity_check+0xba/0xd0 [ 0.583695] [] __ioremap_caller+0x2c5/0x380 [ 0.583698] [] ioremap_nocache+0x17/0x20 [ 0.583701] [] snb_uncore_imc_init_box+0x79/0xb0 [ 0.583705] [] uncore_pci_probe+0xd0/0x1b0 [ 0.583707] [] local_pci_probe+0x45/0xa0 [ 0.583710] [] pci_device_probe+0xfd/0x140 [ 0.583713] [] driver_probe_device+0x222/0x480 [ 0.583715] [] __driver_attach+0x84/0x90 [ 0.583717] [] ? driver_probe_device+0x480/0x480 [ 0.583720] [] bus_for_each_dev+0x6c/0xc0 [ 0.583722] [] driver_attach+0x1e/0x20 [ 0.583724] [] bus_add_driver+0x1eb/0x280 [ 0.583727] [] ? uncore_cpu_setup+0x12/0x12 [ 0.583729] [] driver_register+0x60/0xe0 [ 0.583733] [] __pci_register_driver+0x4c/0x50 [ 0.583736] [] intel_uncore_init+0xe2/0x2e6 [ 0.583738] [] ? uncore_cpu_setup+0x12/0x12 [ 0.583741] [] do_one_initcall+0xb3/0x200 [ 0.583745] [] ? parse_args+0x1a0/0x4a0 [ 0.583749] [] kernel_init_freeable+0x189/0x223 [ 0.583752] [] ? rest_init+0x80/0x80 [ 0.583754] [] kernel_init+0xe/0xe0 [ 0.583758] [] ret_from_fork+0x3f/0x70 [ 0.583760] [] ? rest_init+0x80/0x80 [ 0.583765] ---[ end trace 077c426a39e018aa ]--- 00:00.0 Host bridge [0600]: Intel Corporation Haswell-ULT DRAM Controller [8086:0a04] (rev 0b) Subsystem: Lenovo Device [17aa:220c] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Kernel driver in use: hsw_uncore Link: https://bugzilla.redhat.com/show_bug.cgi?id=1300955 Tested-by: Signed-off-by: Josh Boyer Signed-off-by: Rafael J. Wysocki --- drivers/pnp/quirks.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index f700723ca5d6..d28e3ab9479c 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -342,6 +342,7 @@ static void quirk_amd_mmconfig_area(struct pnp_dev *dev) /* Device IDs of parts that have 32KB MCH space */ static const unsigned int mch_quirk_devices[] = { 0x0154, /* Ivy Bridge */ + 0x0a04, /* Haswell-ULT */ 0x0c00, /* Haswell */ 0x1604, /* Broadwell */ }; -- cgit v1.2.3 From 5be6ada39f3f11a14fae9c6c328bcc78cf476e2e Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 1 Feb 2016 16:17:38 +0200 Subject: ACPI / LPSS: set PM domain via helper setter The commit 989561de9b51 ("PM / Domains: add setter for dev.pm_domain") changed acpi_lpss.c module to use PM domain setter, though it missed one assignment. Add it here. Fixes: 989561de9b51 (PM / Domains: add setter for dev.pm_domain) Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index c570b1d9f094..0872d5fecb82 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -880,7 +880,7 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb, break; case BUS_NOTIFY_DRIVER_NOT_BOUND: case BUS_NOTIFY_UNBOUND_DRIVER: - pdev->dev.pm_domain = NULL; + dev_pm_domain_set(&pdev->dev, NULL); break; case BUS_NOTIFY_ADD_DEVICE: dev_pm_domain_set(&pdev->dev, &acpi_lpss_pm_domain); -- cgit v1.2.3 From 53af16f79fbc3f06df76f6d82adcd4ed03b3d752 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Mon, 1 Feb 2016 14:52:41 +0100 Subject: PM / Domains: Silence compiler warning for an unused function The only remaining caller of genpd_poweron() is conditionally compiled based on CONFIG_PM_GENERIC_DOMAINS_OF, so we get a warning when that is unset. By moving the locking/unlocking of the genpd outside genpd_poweron(), thus to the caller, genpd_poweron() becomes redundant. Within this context let's then rename the wrapper function, __genpd_poweron(), to genpd_poweron() as it will then be consistent with its friend genpd_poweroff(). This change silence the warning about the unused function. Reported-by: Arnd Bergmann Fixes: ea823c7cbffa "PM / Domains: Remove pm_genpd_poweron() API" Signed-off-by: Ulf Hansson Acked-by: Arnd Bergmann Cc: 4.4+ # 4.4+ Signed-off-by: Rafael J. Wysocki --- drivers/base/power/domain.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) (limited to 'drivers') diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 784dbe897a5e..301b785f9f56 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -173,14 +173,14 @@ static void genpd_queue_power_off_work(struct generic_pm_domain *genpd) } /** - * __genpd_poweron - Restore power to a given PM domain and its masters. + * genpd_poweron - Restore power to a given PM domain and its masters. * @genpd: PM domain to power up. * @depth: nesting count for lockdep. * * Restore power to @genpd and all of its masters so that it is possible to * resume a device belonging to it. */ -static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth) +static int genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth) { struct gpd_link *link; int ret = 0; @@ -200,7 +200,7 @@ static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth) genpd_sd_counter_inc(master); mutex_lock_nested(&master->lock, depth + 1); - ret = __genpd_poweron(master, depth + 1); + ret = genpd_poweron(master, depth + 1); mutex_unlock(&master->lock); if (ret) { @@ -227,21 +227,6 @@ static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth) return ret; } -/** - * genpd_poweron - Restore power to a given PM domain and its masters. - * @genpd: PM domain to power up. - */ -static int genpd_poweron(struct generic_pm_domain *genpd) -{ - int ret; - - mutex_lock(&genpd->lock); - ret = __genpd_poweron(genpd, 0); - mutex_unlock(&genpd->lock); - return ret; -} - - static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev) { return GENPD_DEV_CALLBACK(genpd, int, save_state, dev); @@ -489,7 +474,7 @@ static int pm_genpd_runtime_resume(struct device *dev) } mutex_lock(&genpd->lock); - ret = __genpd_poweron(genpd, 0); + ret = genpd_poweron(genpd, 0); mutex_unlock(&genpd->lock); if (ret) @@ -1821,8 +1806,10 @@ int genpd_dev_pm_attach(struct device *dev) dev->pm_domain->detach = genpd_dev_pm_detach; dev->pm_domain->sync = genpd_dev_pm_sync; - ret = genpd_poweron(pd); + mutex_lock(&pd->lock); + ret = genpd_poweron(pd, 0); + mutex_unlock(&pd->lock); out: return ret ? -EPROBE_DEFER : 0; } -- cgit v1.2.3 From e42d85261680edfc350a6c2a86b7fbb44a85014b Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 10:59:53 -0500 Subject: drm/amdgpu: move gmc7 support out of CIK dependency MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's used by iceland which is VI. Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index 66f729eaf00b..20c9539abc36 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -25,7 +25,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \ amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o # add asic specific block -amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o gmc_v7_0.o cik_ih.o kv_smc.o kv_dpm.o \ +amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \ ci_smc.o ci_dpm.o dce_v8_0.o gfx_v7_0.o cik_sdma.o uvd_v4_2.o vce_v2_0.o \ amdgpu_amdkfd_gfx_v7.o @@ -34,6 +34,7 @@ amdgpu-y += \ # add GMC block amdgpu-y += \ + gmc_v7_0.o \ gmc_v8_0.o # add IH block -- cgit v1.2.3 From 429c45deae6e57f1bb91bfb05b671063fb0cef60 Mon Sep 17 00:00:00 2001 From: Ken Wang Date: Wed, 3 Feb 2016 19:16:54 +0800 Subject: drm/amdgpu: iceland use CI based MC IP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Ken Wang Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 10 +++++++++- drivers/gpu/drm/amd/amdgpu/vi.c | 7 ++++--- 2 files changed, 13 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 3f956065d069..069abc8ea31d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -42,6 +42,7 @@ static void gmc_v7_0_set_irq_funcs(struct amdgpu_device *adev); MODULE_FIRMWARE("radeon/bonaire_mc.bin"); MODULE_FIRMWARE("radeon/hawaii_mc.bin"); +MODULE_FIRMWARE("amdgpu/topaz_mc.bin"); /** * gmc8_mc_wait_for_idle - wait for MC idle callback. @@ -132,13 +133,20 @@ static int gmc_v7_0_init_microcode(struct amdgpu_device *adev) case CHIP_HAWAII: chip_name = "hawaii"; break; + case CHIP_TOPAZ: + chip_name = "topaz"; + break; case CHIP_KAVERI: case CHIP_KABINI: return 0; default: BUG(); } - snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", chip_name); + if(adev->asic_type == CHIP_TOPAZ) + snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mc.bin", chip_name); + else + snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", chip_name); + err = request_firmware(&adev->mc.fw, fw_name, adev->dev); if (err) goto out; diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 652e76644c31..d94c625575b9 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -61,6 +61,7 @@ #include "vi.h" #include "vi_dpm.h" #include "gmc_v8_0.h" +#include "gmc_v7_0.h" #include "gfx_v8_0.h" #include "sdma_v2_4.h" #include "sdma_v3_0.h" @@ -1109,10 +1110,10 @@ static const struct amdgpu_ip_block_version topaz_ip_blocks[] = }, { .type = AMD_IP_BLOCK_TYPE_GMC, - .major = 8, - .minor = 0, + .major = 7, + .minor = 4, .rev = 0, - .funcs = &gmc_v8_0_ip_funcs, + .funcs = &gmc_v7_0_ip_funcs, }, { .type = AMD_IP_BLOCK_TYPE_IH, -- cgit v1.2.3 From 8f3c162961fc2d92ec73a66496aab69eb2e19c36 Mon Sep 17 00:00:00 2001 From: Ken Wang Date: Wed, 3 Feb 2016 19:17:53 +0800 Subject: drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Ken Wang Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 8a1752ff3d8e..55cf05e1c81c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -808,7 +808,7 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, flags |= AMDGPU_PTE_SNOOPED; } - if (adev->asic_type >= CHIP_TOPAZ) + if (adev->asic_type >= CHIP_TONGA) flags |= AMDGPU_PTE_EXECUTABLE; flags |= AMDGPU_PTE_READABLE; -- cgit v1.2.3 From 72b459c8f716ef03a8a0c78078547ce64d8d29a2 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 10:56:15 -0500 Subject: drm/amdgpu: pull topaz gmc bits into gmc_v7 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add the topaz golden settings into the gmc7 module. Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 35 +++++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 069abc8ea31d..8aa2991ab379 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -44,8 +44,37 @@ MODULE_FIRMWARE("radeon/bonaire_mc.bin"); MODULE_FIRMWARE("radeon/hawaii_mc.bin"); MODULE_FIRMWARE("amdgpu/topaz_mc.bin"); +static const u32 golden_settings_iceland_a11[] = +{ + mmVM_PRT_APERTURE0_LOW_ADDR, 0x0fffffff, 0x0fffffff, + mmVM_PRT_APERTURE1_LOW_ADDR, 0x0fffffff, 0x0fffffff, + mmVM_PRT_APERTURE2_LOW_ADDR, 0x0fffffff, 0x0fffffff, + mmVM_PRT_APERTURE3_LOW_ADDR, 0x0fffffff, 0x0fffffff +}; + +static const u32 iceland_mgcg_cgcg_init[] = +{ + mmMC_MEM_POWER_LS, 0xffffffff, 0x00000104 +}; + +static void gmc_v7_0_init_golden_registers(struct amdgpu_device *adev) +{ + switch (adev->asic_type) { + case CHIP_TOPAZ: + amdgpu_program_register_sequence(adev, + iceland_mgcg_cgcg_init, + (const u32)ARRAY_SIZE(iceland_mgcg_cgcg_init)); + amdgpu_program_register_sequence(adev, + golden_settings_iceland_a11, + (const u32)ARRAY_SIZE(golden_settings_iceland_a11)); + break; + default: + break; + } +} + /** - * gmc8_mc_wait_for_idle - wait for MC idle callback. + * gmc7_mc_wait_for_idle - wait for MC idle callback. * * @adev: amdgpu_device pointer * @@ -142,7 +171,7 @@ static int gmc_v7_0_init_microcode(struct amdgpu_device *adev) default: BUG(); } - if(adev->asic_type == CHIP_TOPAZ) + if (adev->asic_type == CHIP_TOPAZ) snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mc.bin", chip_name); else snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", chip_name); @@ -992,6 +1021,8 @@ static int gmc_v7_0_hw_init(void *handle) int r; struct amdgpu_device *adev = (struct amdgpu_device *)handle; + gmc_v7_0_init_golden_registers(adev); + gmc_v7_0_mc_program(adev); if (!(adev->flags & AMD_IS_APU)) { -- cgit v1.2.3 From 8878d8548ac7fae43cd6d82579f966eb8825e282 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 10:57:30 -0500 Subject: drm/amdgpu: drop topaz support from gmc8 module MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit topaz is actually gmc7. Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 28 +--------------------------- 1 file changed, 1 insertion(+), 27 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 875a5e988cb1..3efd45546241 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -42,7 +42,6 @@ static void gmc_v8_0_set_gart_funcs(struct amdgpu_device *adev); static void gmc_v8_0_set_irq_funcs(struct amdgpu_device *adev); -MODULE_FIRMWARE("amdgpu/topaz_mc.bin"); MODULE_FIRMWARE("amdgpu/tonga_mc.bin"); static const u32 golden_settings_tonga_a11[] = @@ -74,19 +73,6 @@ static const u32 fiji_mgcg_cgcg_init[] = mmMC_MEM_POWER_LS, 0xffffffff, 0x00000104 }; -static const u32 golden_settings_iceland_a11[] = -{ - mmVM_PRT_APERTURE0_LOW_ADDR, 0x0fffffff, 0x0fffffff, - mmVM_PRT_APERTURE1_LOW_ADDR, 0x0fffffff, 0x0fffffff, - mmVM_PRT_APERTURE2_LOW_ADDR, 0x0fffffff, 0x0fffffff, - mmVM_PRT_APERTURE3_LOW_ADDR, 0x0fffffff, 0x0fffffff -}; - -static const u32 iceland_mgcg_cgcg_init[] = -{ - mmMC_MEM_POWER_LS, 0xffffffff, 0x00000104 -}; - static const u32 cz_mgcg_cgcg_init[] = { mmMC_MEM_POWER_LS, 0xffffffff, 0x00000104 @@ -101,14 +87,6 @@ static const u32 stoney_mgcg_cgcg_init[] = static void gmc_v8_0_init_golden_registers(struct amdgpu_device *adev) { switch (adev->asic_type) { - case CHIP_TOPAZ: - amdgpu_program_register_sequence(adev, - iceland_mgcg_cgcg_init, - (const u32)ARRAY_SIZE(iceland_mgcg_cgcg_init)); - amdgpu_program_register_sequence(adev, - golden_settings_iceland_a11, - (const u32)ARRAY_SIZE(golden_settings_iceland_a11)); - break; case CHIP_FIJI: amdgpu_program_register_sequence(adev, fiji_mgcg_cgcg_init, @@ -228,9 +206,6 @@ static int gmc_v8_0_init_microcode(struct amdgpu_device *adev) DRM_DEBUG("\n"); switch (adev->asic_type) { - case CHIP_TOPAZ: - chip_name = "topaz"; - break; case CHIP_TONGA: chip_name = "tonga"; break; @@ -1004,8 +979,7 @@ static int gmc_v8_0_hw_init(void *handle) gmc_v8_0_mc_program(adev); - if ((adev->asic_type == CHIP_TOPAZ) || - (adev->asic_type == CHIP_TONGA)) { + if (adev->asic_type == CHIP_TONGA) { r = gmc_v8_0_mc_load_microcode(adev); if (r) { DRM_ERROR("Failed to load MC firmware!\n"); -- cgit v1.2.3 From 97dde76a30c2e67fa5fb9cb6a4072c0178c9df26 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 11:15:41 -0500 Subject: drm/amdgpu: don't load MEC2 on topaz MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Not validated. Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 4 ++-- drivers/gpu/drm/amd/amdgpu/iceland_smc.c | 12 +++--------- 2 files changed, 5 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 39fa41bcae10..87c3332f45e3 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -111,7 +111,6 @@ MODULE_FIRMWARE("amdgpu/topaz_ce.bin"); MODULE_FIRMWARE("amdgpu/topaz_pfp.bin"); MODULE_FIRMWARE("amdgpu/topaz_me.bin"); MODULE_FIRMWARE("amdgpu/topaz_mec.bin"); -MODULE_FIRMWARE("amdgpu/topaz_mec2.bin"); MODULE_FIRMWARE("amdgpu/topaz_rlc.bin"); MODULE_FIRMWARE("amdgpu/fiji_ce.bin"); @@ -828,7 +827,8 @@ static int gfx_v8_0_init_microcode(struct amdgpu_device *adev) adev->gfx.mec_fw_version = le32_to_cpu(cp_hdr->header.ucode_version); adev->gfx.mec_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version); - if (adev->asic_type != CHIP_STONEY) { + if ((adev->asic_type != CHIP_STONEY) && + (adev->asic_type != CHIP_TOPAZ)) { snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec2.bin", chip_name); err = request_firmware(&adev->gfx.mec2_fw, fw_name, adev->dev); if (!err) { diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_smc.c b/drivers/gpu/drm/amd/amdgpu/iceland_smc.c index 966d4b2ed9da..090486c18249 100644 --- a/drivers/gpu/drm/amd/amdgpu/iceland_smc.c +++ b/drivers/gpu/drm/amd/amdgpu/iceland_smc.c @@ -432,7 +432,7 @@ static uint32_t iceland_smu_get_mask_for_fw_type(uint32_t fw_type) case AMDGPU_UCODE_ID_CP_ME: return UCODE_ID_CP_ME_MASK; case AMDGPU_UCODE_ID_CP_MEC1: - return UCODE_ID_CP_MEC_MASK | UCODE_ID_CP_MEC_JT1_MASK | UCODE_ID_CP_MEC_JT2_MASK; + return UCODE_ID_CP_MEC_MASK | UCODE_ID_CP_MEC_JT1_MASK; case AMDGPU_UCODE_ID_CP_MEC2: return UCODE_ID_CP_MEC_MASK; case AMDGPU_UCODE_ID_RLC_G: @@ -522,12 +522,6 @@ static int iceland_smu_request_load_fw(struct amdgpu_device *adev) return -EINVAL; } - if (iceland_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_MEC_JT2, - &toc->entry[toc->num_entries++])) { - DRM_ERROR("Failed to get firmware entry for MEC_JT2\n"); - return -EINVAL; - } - if (iceland_smu_populate_single_firmware_entry(adev, UCODE_ID_SDMA0, &toc->entry[toc->num_entries++])) { DRM_ERROR("Failed to get firmware entry for SDMA0\n"); @@ -550,8 +544,8 @@ static int iceland_smu_request_load_fw(struct amdgpu_device *adev) UCODE_ID_CP_ME_MASK | UCODE_ID_CP_PFP_MASK | UCODE_ID_CP_MEC_MASK | - UCODE_ID_CP_MEC_JT1_MASK | - UCODE_ID_CP_MEC_JT2_MASK; + UCODE_ID_CP_MEC_JT1_MASK; + if (iceland_send_msg_to_smc_with_parameter_without_waiting(adev, PPSMC_MSG_LoadUcodes, fw_to_load)) { DRM_ERROR("Fail to request SMU load ucode\n"); -- cgit v1.2.3 From 951e09624a9f417f0b64c872f71feb6738905086 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 16:22:15 -0500 Subject: drm/amdgpu: load MEC ucode manually on iceland MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The smc doesn't handle it. Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 87c3332f45e3..8f8ec37ecd88 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -3851,10 +3851,16 @@ static int gfx_v8_0_cp_resume(struct amdgpu_device *adev) if (r) return -EINVAL; - r = adev->smu.smumgr_funcs->check_fw_load_finish(adev, - AMDGPU_UCODE_ID_CP_MEC1); - if (r) - return -EINVAL; + if (adev->asic_type == CHIP_TOPAZ) { + r = gfx_v8_0_cp_compute_load_microcode(adev); + if (r) + return r; + } else { + r = adev->smu.smumgr_funcs->check_fw_load_finish(adev, + AMDGPU_UCODE_ID_CP_MEC1); + if (r) + return -EINVAL; + } } } -- cgit v1.2.3 From dba280b20bfd1c2bed8a07ce3f75a6da8ba7d247 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 16:24:20 -0500 Subject: drm/amdgpu: remove exp hardware support from iceland MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's working now. bug: https://bugs.freedesktop.org/show_bug.cgi?id=92270 Reviewed-by: Ken Wang Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index b5dbbb573491..9c1af8976bef 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -256,11 +256,11 @@ static struct pci_device_id pciidlist[] = { {0x1002, 0x985F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_MULLINS|AMD_IS_MOBILITY|AMD_IS_APU}, #endif /* topaz */ - {0x1002, 0x6900, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ|AMD_EXP_HW_SUPPORT}, - {0x1002, 0x6901, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ|AMD_EXP_HW_SUPPORT}, - {0x1002, 0x6902, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ|AMD_EXP_HW_SUPPORT}, - {0x1002, 0x6903, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ|AMD_EXP_HW_SUPPORT}, - {0x1002, 0x6907, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ|AMD_EXP_HW_SUPPORT}, + {0x1002, 0x6900, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ}, + {0x1002, 0x6901, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ}, + {0x1002, 0x6902, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ}, + {0x1002, 0x6903, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ}, + {0x1002, 0x6907, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TOPAZ}, /* tonga */ {0x1002, 0x6920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TONGA}, {0x1002, 0x6921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TONGA}, -- cgit v1.2.3 From d896910f381737a139686eb3fa9e1c7ce8f59e52 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 15 Jan 2016 14:40:24 +0100 Subject: phy: Restrict phy-hi6220-usb to HiSilicon arm64 The HiSilicon Hi6220 USB PHY is available in HiSilicon Hi6220 SoCs only. Restrict it to HiSilicon arm64, unless compile-testing. Signed-off-by: Geert Uytterhoeven Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index e7e117d5dbbe..0124d17bd9fe 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -224,6 +224,7 @@ config PHY_MT65XX_USB3 config PHY_HI6220_USB tristate "hi6220 USB PHY support" + depends on (ARCH_HISI && ARM64) || COMPILE_TEST select GENERIC_PHY select MFD_SYSCON help -- cgit v1.2.3 From f5e741b7c7dddefa318b7f91af134f8ae2a342c1 Mon Sep 17 00:00:00 2001 From: Doug Ledford Date: Wed, 3 Feb 2016 11:06:23 -0500 Subject: staging/rdma: remove deprecated amso1100 driver Driver was placed in staging for eventual removal, it is time to complete that task. Signed-off-by: Doug Ledford --- drivers/staging/rdma/Kconfig | 2 - drivers/staging/rdma/Makefile | 1 - drivers/staging/rdma/amso1100/Kbuild | 6 - drivers/staging/rdma/amso1100/Kconfig | 15 - drivers/staging/rdma/amso1100/TODO | 4 - drivers/staging/rdma/amso1100/c2.c | 1240 ---------------------- drivers/staging/rdma/amso1100/c2.h | 547 ---------- drivers/staging/rdma/amso1100/c2_ae.c | 327 ------ drivers/staging/rdma/amso1100/c2_ae.h | 108 -- drivers/staging/rdma/amso1100/c2_alloc.c | 142 --- drivers/staging/rdma/amso1100/c2_cm.c | 458 -------- drivers/staging/rdma/amso1100/c2_cq.c | 437 -------- drivers/staging/rdma/amso1100/c2_intr.c | 219 ---- drivers/staging/rdma/amso1100/c2_mm.c | 377 ------- drivers/staging/rdma/amso1100/c2_mq.c | 175 --- drivers/staging/rdma/amso1100/c2_mq.h | 106 -- drivers/staging/rdma/amso1100/c2_pd.c | 90 -- drivers/staging/rdma/amso1100/c2_provider.c | 862 --------------- drivers/staging/rdma/amso1100/c2_provider.h | 182 ---- drivers/staging/rdma/amso1100/c2_qp.c | 1024 ------------------ drivers/staging/rdma/amso1100/c2_rnic.c | 652 ------------ drivers/staging/rdma/amso1100/c2_status.h | 158 --- drivers/staging/rdma/amso1100/c2_user.h | 82 -- drivers/staging/rdma/amso1100/c2_vq.c | 260 ----- drivers/staging/rdma/amso1100/c2_vq.h | 63 -- drivers/staging/rdma/amso1100/c2_wr.h | 1520 --------------------------- 26 files changed, 9057 deletions(-) delete mode 100644 drivers/staging/rdma/amso1100/Kbuild delete mode 100644 drivers/staging/rdma/amso1100/Kconfig delete mode 100644 drivers/staging/rdma/amso1100/TODO delete mode 100644 drivers/staging/rdma/amso1100/c2.c delete mode 100644 drivers/staging/rdma/amso1100/c2.h delete mode 100644 drivers/staging/rdma/amso1100/c2_ae.c delete mode 100644 drivers/staging/rdma/amso1100/c2_ae.h delete mode 100644 drivers/staging/rdma/amso1100/c2_alloc.c delete mode 100644 drivers/staging/rdma/amso1100/c2_cm.c delete mode 100644 drivers/staging/rdma/amso1100/c2_cq.c delete mode 100644 drivers/staging/rdma/amso1100/c2_intr.c delete mode 100644 drivers/staging/rdma/amso1100/c2_mm.c delete mode 100644 drivers/staging/rdma/amso1100/c2_mq.c delete mode 100644 drivers/staging/rdma/amso1100/c2_mq.h delete mode 100644 drivers/staging/rdma/amso1100/c2_pd.c delete mode 100644 drivers/staging/rdma/amso1100/c2_provider.c delete mode 100644 drivers/staging/rdma/amso1100/c2_provider.h delete mode 100644 drivers/staging/rdma/amso1100/c2_qp.c delete mode 100644 drivers/staging/rdma/amso1100/c2_rnic.c delete mode 100644 drivers/staging/rdma/amso1100/c2_status.h delete mode 100644 drivers/staging/rdma/amso1100/c2_user.h delete mode 100644 drivers/staging/rdma/amso1100/c2_vq.c delete mode 100644 drivers/staging/rdma/amso1100/c2_vq.h delete mode 100644 drivers/staging/rdma/amso1100/c2_wr.h (limited to 'drivers') diff --git a/drivers/staging/rdma/Kconfig b/drivers/staging/rdma/Kconfig index ba8765063174..1624bc43e304 100644 --- a/drivers/staging/rdma/Kconfig +++ b/drivers/staging/rdma/Kconfig @@ -22,8 +22,6 @@ menuconfig STAGING_RDMA # Please keep entries in alphabetic order if STAGING_RDMA -source "drivers/staging/rdma/amso1100/Kconfig" - source "drivers/staging/rdma/ehca/Kconfig" source "drivers/staging/rdma/hfi1/Kconfig" diff --git a/drivers/staging/rdma/Makefile b/drivers/staging/rdma/Makefile index 139d78ef2c24..2217d6778669 100644 --- a/drivers/staging/rdma/Makefile +++ b/drivers/staging/rdma/Makefile @@ -1,5 +1,4 @@ # Entries for RDMA_STAGING tree -obj-$(CONFIG_INFINIBAND_AMSO1100) += amso1100/ obj-$(CONFIG_INFINIBAND_EHCA) += ehca/ obj-$(CONFIG_INFINIBAND_HFI1) += hfi1/ obj-$(CONFIG_INFINIBAND_IPATH) += ipath/ diff --git a/drivers/staging/rdma/amso1100/Kbuild b/drivers/staging/rdma/amso1100/Kbuild deleted file mode 100644 index 950dfabcd89d..000000000000 --- a/drivers/staging/rdma/amso1100/Kbuild +++ /dev/null @@ -1,6 +0,0 @@ -ccflags-$(CONFIG_INFINIBAND_AMSO1100_DEBUG) := -DDEBUG - -obj-$(CONFIG_INFINIBAND_AMSO1100) += iw_c2.o - -iw_c2-y := c2.o c2_provider.o c2_rnic.o c2_alloc.o c2_mq.o c2_ae.o c2_vq.o \ - c2_intr.o c2_cq.o c2_qp.o c2_cm.o c2_mm.o c2_pd.o diff --git a/drivers/staging/rdma/amso1100/Kconfig b/drivers/staging/rdma/amso1100/Kconfig deleted file mode 100644 index e6ce5f209e47..000000000000 --- a/drivers/staging/rdma/amso1100/Kconfig +++ /dev/null @@ -1,15 +0,0 @@ -config INFINIBAND_AMSO1100 - tristate "Ammasso 1100 HCA support" - depends on PCI && INET - ---help--- - This is a low-level driver for the Ammasso 1100 host - channel adapter (HCA). - -config INFINIBAND_AMSO1100_DEBUG - bool "Verbose debugging output" - depends on INFINIBAND_AMSO1100 - default n - ---help--- - This option causes the amso1100 driver to produce a bunch of - debug messages. Select this if you are developing the driver - or trying to diagnose a problem. diff --git a/drivers/staging/rdma/amso1100/TODO b/drivers/staging/rdma/amso1100/TODO deleted file mode 100644 index 18b00a5cb549..000000000000 --- a/drivers/staging/rdma/amso1100/TODO +++ /dev/null @@ -1,4 +0,0 @@ -7/2015 - -The amso1100 driver has been deprecated and moved to drivers/staging. -It will be removed in the 4.6 merge window. diff --git a/drivers/staging/rdma/amso1100/c2.c b/drivers/staging/rdma/amso1100/c2.c deleted file mode 100644 index b46ebd1ae15a..000000000000 --- a/drivers/staging/rdma/amso1100/c2.c +++ /dev/null @@ -1,1240 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include "c2.h" -#include "c2_provider.h" - -MODULE_AUTHOR("Tom Tucker "); -MODULE_DESCRIPTION("Ammasso AMSO1100 Low-level iWARP Driver"); -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_VERSION(DRV_VERSION); - -static const u32 default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK - | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN; - -static int debug = -1; /* defaults above */ -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); - -static int c2_up(struct net_device *netdev); -static int c2_down(struct net_device *netdev); -static int c2_xmit_frame(struct sk_buff *skb, struct net_device *netdev); -static void c2_tx_interrupt(struct net_device *netdev); -static void c2_rx_interrupt(struct net_device *netdev); -static irqreturn_t c2_interrupt(int irq, void *dev_id); -static void c2_tx_timeout(struct net_device *netdev); -static int c2_change_mtu(struct net_device *netdev, int new_mtu); -static void c2_reset(struct c2_port *c2_port); - -static struct pci_device_id c2_pci_table[] = { - { PCI_DEVICE(0x18b8, 0xb001) }, - { 0 } -}; - -MODULE_DEVICE_TABLE(pci, c2_pci_table); - -static void c2_set_rxbufsize(struct c2_port *c2_port) -{ - struct net_device *netdev = c2_port->netdev; - - if (netdev->mtu > RX_BUF_SIZE) - c2_port->rx_buf_size = - netdev->mtu + ETH_HLEN + sizeof(struct c2_rxp_hdr) + - NET_IP_ALIGN; - else - c2_port->rx_buf_size = sizeof(struct c2_rxp_hdr) + RX_BUF_SIZE; -} - -/* - * Allocate TX ring elements and chain them together. - * One-to-one association of adapter descriptors with ring elements. - */ -static int c2_tx_ring_alloc(struct c2_ring *tx_ring, void *vaddr, - dma_addr_t base, void __iomem * mmio_txp_ring) -{ - struct c2_tx_desc *tx_desc; - struct c2_txp_desc __iomem *txp_desc; - struct c2_element *elem; - int i; - - tx_ring->start = kmalloc_array(tx_ring->count, sizeof(*elem), - GFP_KERNEL); - if (!tx_ring->start) - return -ENOMEM; - - elem = tx_ring->start; - tx_desc = vaddr; - txp_desc = mmio_txp_ring; - for (i = 0; i < tx_ring->count; i++, elem++, tx_desc++, txp_desc++) { - tx_desc->len = 0; - tx_desc->status = 0; - - /* Set TXP_HTXD_UNINIT */ - __raw_writeq((__force u64) cpu_to_be64(0x1122334455667788ULL), - (void __iomem *) txp_desc + C2_TXP_ADDR); - __raw_writew(0, (void __iomem *) txp_desc + C2_TXP_LEN); - __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_UNINIT), - (void __iomem *) txp_desc + C2_TXP_FLAGS); - - elem->skb = NULL; - elem->ht_desc = tx_desc; - elem->hw_desc = txp_desc; - - if (i == tx_ring->count - 1) { - elem->next = tx_ring->start; - tx_desc->next_offset = base; - } else { - elem->next = elem + 1; - tx_desc->next_offset = - base + (i + 1) * sizeof(*tx_desc); - } - } - - tx_ring->to_use = tx_ring->to_clean = tx_ring->start; - - return 0; -} - -/* - * Allocate RX ring elements and chain them together. - * One-to-one association of adapter descriptors with ring elements. - */ -static int c2_rx_ring_alloc(struct c2_ring *rx_ring, void *vaddr, - dma_addr_t base, void __iomem * mmio_rxp_ring) -{ - struct c2_rx_desc *rx_desc; - struct c2_rxp_desc __iomem *rxp_desc; - struct c2_element *elem; - int i; - - rx_ring->start = kmalloc_array(rx_ring->count, sizeof(*elem), - GFP_KERNEL); - if (!rx_ring->start) - return -ENOMEM; - - elem = rx_ring->start; - rx_desc = vaddr; - rxp_desc = mmio_rxp_ring; - for (i = 0; i < rx_ring->count; i++, elem++, rx_desc++, rxp_desc++) { - rx_desc->len = 0; - rx_desc->status = 0; - - /* Set RXP_HRXD_UNINIT */ - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_OK), - (void __iomem *) rxp_desc + C2_RXP_STATUS); - __raw_writew(0, (void __iomem *) rxp_desc + C2_RXP_COUNT); - __raw_writew(0, (void __iomem *) rxp_desc + C2_RXP_LEN); - __raw_writeq((__force u64) cpu_to_be64(0x99aabbccddeeffULL), - (void __iomem *) rxp_desc + C2_RXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_UNINIT), - (void __iomem *) rxp_desc + C2_RXP_FLAGS); - - elem->skb = NULL; - elem->ht_desc = rx_desc; - elem->hw_desc = rxp_desc; - - if (i == rx_ring->count - 1) { - elem->next = rx_ring->start; - rx_desc->next_offset = base; - } else { - elem->next = elem + 1; - rx_desc->next_offset = - base + (i + 1) * sizeof(*rx_desc); - } - } - - rx_ring->to_use = rx_ring->to_clean = rx_ring->start; - - return 0; -} - -/* Setup buffer for receiving */ -static inline int c2_rx_alloc(struct c2_port *c2_port, struct c2_element *elem) -{ - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_rx_desc *rx_desc = elem->ht_desc; - struct sk_buff *skb; - dma_addr_t mapaddr; - u32 maplen; - struct c2_rxp_hdr *rxp_hdr; - - skb = dev_alloc_skb(c2_port->rx_buf_size); - if (unlikely(!skb)) { - pr_debug("%s: out of memory for receive\n", - c2_port->netdev->name); - return -ENOMEM; - } - - /* Zero out the rxp hdr in the sk_buff */ - memset(skb->data, 0, sizeof(*rxp_hdr)); - - skb->dev = c2_port->netdev; - - maplen = c2_port->rx_buf_size; - mapaddr = - pci_map_single(c2dev->pcidev, skb->data, maplen, - PCI_DMA_FROMDEVICE); - - /* Set the sk_buff RXP_header to RXP_HRXD_READY */ - rxp_hdr = (struct c2_rxp_hdr *) skb->data; - rxp_hdr->flags = RXP_HRXD_READY; - - __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); - __raw_writew((__force u16) cpu_to_be16((u16) maplen - sizeof(*rxp_hdr)), - elem->hw_desc + C2_RXP_LEN); - __raw_writeq((__force u64) cpu_to_be64(mapaddr), elem->hw_desc + C2_RXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), - elem->hw_desc + C2_RXP_FLAGS); - - elem->skb = skb; - elem->mapaddr = mapaddr; - elem->maplen = maplen; - rx_desc->len = maplen; - - return 0; -} - -/* - * Allocate buffers for the Rx ring - * For receive: rx_ring.to_clean is next received frame - */ -static int c2_rx_fill(struct c2_port *c2_port) -{ - struct c2_ring *rx_ring = &c2_port->rx_ring; - struct c2_element *elem; - int ret = 0; - - elem = rx_ring->start; - do { - if (c2_rx_alloc(c2_port, elem)) { - ret = 1; - break; - } - } while ((elem = elem->next) != rx_ring->start); - - rx_ring->to_clean = rx_ring->start; - return ret; -} - -/* Free all buffers in RX ring, assumes receiver stopped */ -static void c2_rx_clean(struct c2_port *c2_port) -{ - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_ring *rx_ring = &c2_port->rx_ring; - struct c2_element *elem; - struct c2_rx_desc *rx_desc; - - elem = rx_ring->start; - do { - rx_desc = elem->ht_desc; - rx_desc->len = 0; - - __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); - __raw_writew(0, elem->hw_desc + C2_RXP_COUNT); - __raw_writew(0, elem->hw_desc + C2_RXP_LEN); - __raw_writeq((__force u64) cpu_to_be64(0x99aabbccddeeffULL), - elem->hw_desc + C2_RXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_UNINIT), - elem->hw_desc + C2_RXP_FLAGS); - - if (elem->skb) { - pci_unmap_single(c2dev->pcidev, elem->mapaddr, - elem->maplen, PCI_DMA_FROMDEVICE); - dev_kfree_skb(elem->skb); - elem->skb = NULL; - } - } while ((elem = elem->next) != rx_ring->start); -} - -static inline int c2_tx_free(struct c2_dev *c2dev, struct c2_element *elem) -{ - struct c2_tx_desc *tx_desc = elem->ht_desc; - - tx_desc->len = 0; - - pci_unmap_single(c2dev->pcidev, elem->mapaddr, elem->maplen, - PCI_DMA_TODEVICE); - - if (elem->skb) { - dev_kfree_skb_any(elem->skb); - elem->skb = NULL; - } - - return 0; -} - -/* Free all buffers in TX ring, assumes transmitter stopped */ -static void c2_tx_clean(struct c2_port *c2_port) -{ - struct c2_ring *tx_ring = &c2_port->tx_ring; - struct c2_element *elem; - struct c2_txp_desc txp_htxd; - int retry; - unsigned long flags; - - spin_lock_irqsave(&c2_port->tx_lock, flags); - - elem = tx_ring->start; - - do { - retry = 0; - do { - txp_htxd.flags = - readw(elem->hw_desc + C2_TXP_FLAGS); - - if (txp_htxd.flags == TXP_HTXD_READY) { - retry = 1; - __raw_writew(0, - elem->hw_desc + C2_TXP_LEN); - __raw_writeq(0, - elem->hw_desc + C2_TXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_DONE), - elem->hw_desc + C2_TXP_FLAGS); - c2_port->netdev->stats.tx_dropped++; - break; - } else { - __raw_writew(0, - elem->hw_desc + C2_TXP_LEN); - __raw_writeq((__force u64) cpu_to_be64(0x1122334455667788ULL), - elem->hw_desc + C2_TXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_UNINIT), - elem->hw_desc + C2_TXP_FLAGS); - } - - c2_tx_free(c2_port->c2dev, elem); - - } while ((elem = elem->next) != tx_ring->start); - } while (retry); - - c2_port->tx_avail = c2_port->tx_ring.count - 1; - c2_port->c2dev->cur_tx = tx_ring->to_use - tx_ring->start; - - if (c2_port->tx_avail > MAX_SKB_FRAGS + 1) - netif_wake_queue(c2_port->netdev); - - spin_unlock_irqrestore(&c2_port->tx_lock, flags); -} - -/* - * Process transmit descriptors marked 'DONE' by the firmware, - * freeing up their unneeded sk_buffs. - */ -static void c2_tx_interrupt(struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_ring *tx_ring = &c2_port->tx_ring; - struct c2_element *elem; - struct c2_txp_desc txp_htxd; - - spin_lock(&c2_port->tx_lock); - - for (elem = tx_ring->to_clean; elem != tx_ring->to_use; - elem = elem->next) { - txp_htxd.flags = - be16_to_cpu((__force __be16) readw(elem->hw_desc + C2_TXP_FLAGS)); - - if (txp_htxd.flags != TXP_HTXD_DONE) - break; - - if (netif_msg_tx_done(c2_port)) { - /* PCI reads are expensive in fast path */ - txp_htxd.len = - be16_to_cpu((__force __be16) readw(elem->hw_desc + C2_TXP_LEN)); - pr_debug("%s: tx done slot %3Zu status 0x%x len " - "%5u bytes\n", - netdev->name, elem - tx_ring->start, - txp_htxd.flags, txp_htxd.len); - } - - c2_tx_free(c2dev, elem); - ++(c2_port->tx_avail); - } - - tx_ring->to_clean = elem; - - if (netif_queue_stopped(netdev) - && c2_port->tx_avail > MAX_SKB_FRAGS + 1) - netif_wake_queue(netdev); - - spin_unlock(&c2_port->tx_lock); -} - -static void c2_rx_error(struct c2_port *c2_port, struct c2_element *elem) -{ - struct c2_rx_desc *rx_desc = elem->ht_desc; - struct c2_rxp_hdr *rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data; - - if (rxp_hdr->status != RXP_HRXD_OK || - rxp_hdr->len > (rx_desc->len - sizeof(*rxp_hdr))) { - pr_debug("BAD RXP_HRXD\n"); - pr_debug(" rx_desc : %p\n", rx_desc); - pr_debug(" index : %Zu\n", - elem - c2_port->rx_ring.start); - pr_debug(" len : %u\n", rx_desc->len); - pr_debug(" rxp_hdr : %p [PA %p]\n", rxp_hdr, - (void *) __pa((unsigned long) rxp_hdr)); - pr_debug(" flags : 0x%x\n", rxp_hdr->flags); - pr_debug(" status: 0x%x\n", rxp_hdr->status); - pr_debug(" len : %u\n", rxp_hdr->len); - pr_debug(" rsvd : 0x%x\n", rxp_hdr->rsvd); - } - - /* Setup the skb for reuse since we're dropping this pkt */ - elem->skb->data = elem->skb->head; - skb_reset_tail_pointer(elem->skb); - - /* Zero out the rxp hdr in the sk_buff */ - memset(elem->skb->data, 0, sizeof(*rxp_hdr)); - - /* Write the descriptor to the adapter's rx ring */ - __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); - __raw_writew(0, elem->hw_desc + C2_RXP_COUNT); - __raw_writew((__force u16) cpu_to_be16((u16) elem->maplen - sizeof(*rxp_hdr)), - elem->hw_desc + C2_RXP_LEN); - __raw_writeq((__force u64) cpu_to_be64(elem->mapaddr), - elem->hw_desc + C2_RXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), - elem->hw_desc + C2_RXP_FLAGS); - - pr_debug("packet dropped\n"); - c2_port->netdev->stats.rx_dropped++; -} - -static void c2_rx_interrupt(struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_ring *rx_ring = &c2_port->rx_ring; - struct c2_element *elem; - struct c2_rx_desc *rx_desc; - struct c2_rxp_hdr *rxp_hdr; - struct sk_buff *skb; - dma_addr_t mapaddr; - u32 maplen, buflen; - unsigned long flags; - - spin_lock_irqsave(&c2dev->lock, flags); - - /* Begin where we left off */ - rx_ring->to_clean = rx_ring->start + c2dev->cur_rx; - - for (elem = rx_ring->to_clean; elem->next != rx_ring->to_clean; - elem = elem->next) { - rx_desc = elem->ht_desc; - mapaddr = elem->mapaddr; - maplen = elem->maplen; - skb = elem->skb; - rxp_hdr = (struct c2_rxp_hdr *) skb->data; - - if (rxp_hdr->flags != RXP_HRXD_DONE) - break; - buflen = rxp_hdr->len; - - /* Sanity check the RXP header */ - if (rxp_hdr->status != RXP_HRXD_OK || - buflen > (rx_desc->len - sizeof(*rxp_hdr))) { - c2_rx_error(c2_port, elem); - continue; - } - - /* - * Allocate and map a new skb for replenishing the host - * RX desc - */ - if (c2_rx_alloc(c2_port, elem)) { - c2_rx_error(c2_port, elem); - continue; - } - - /* Unmap the old skb */ - pci_unmap_single(c2dev->pcidev, mapaddr, maplen, - PCI_DMA_FROMDEVICE); - - prefetch(skb->data); - - /* - * Skip past the leading 8 bytes comprising of the - * "struct c2_rxp_hdr", prepended by the adapter - * to the usual Ethernet header ("struct ethhdr"), - * to the start of the raw Ethernet packet. - * - * Fix up the various fields in the sk_buff before - * passing it up to netif_rx(). The transfer size - * (in bytes) specified by the adapter len field of - * the "struct rxp_hdr_t" does NOT include the - * "sizeof(struct c2_rxp_hdr)". - */ - skb->data += sizeof(*rxp_hdr); - skb_set_tail_pointer(skb, buflen); - skb->len = buflen; - skb->protocol = eth_type_trans(skb, netdev); - - netif_rx(skb); - - netdev->stats.rx_packets++; - netdev->stats.rx_bytes += buflen; - } - - /* Save where we left off */ - rx_ring->to_clean = elem; - c2dev->cur_rx = elem - rx_ring->start; - C2_SET_CUR_RX(c2dev, c2dev->cur_rx); - - spin_unlock_irqrestore(&c2dev->lock, flags); -} - -/* - * Handle netisr0 TX & RX interrupts. - */ -static irqreturn_t c2_interrupt(int irq, void *dev_id) -{ - unsigned int netisr0, dmaisr; - int handled = 0; - struct c2_dev *c2dev = dev_id; - - /* Process CCILNET interrupts */ - netisr0 = readl(c2dev->regs + C2_NISR0); - if (netisr0) { - - /* - * There is an issue with the firmware that always - * provides the status of RX for both TX & RX - * interrupts. So process both queues here. - */ - c2_rx_interrupt(c2dev->netdev); - c2_tx_interrupt(c2dev->netdev); - - /* Clear the interrupt */ - writel(netisr0, c2dev->regs + C2_NISR0); - handled++; - } - - /* Process RNIC interrupts */ - dmaisr = readl(c2dev->regs + C2_DISR); - if (dmaisr) { - writel(dmaisr, c2dev->regs + C2_DISR); - c2_rnic_interrupt(c2dev); - handled++; - } - - if (handled) { - return IRQ_HANDLED; - } else { - return IRQ_NONE; - } -} - -static int c2_up(struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_element *elem; - struct c2_rxp_hdr *rxp_hdr; - struct in_device *in_dev; - size_t rx_size, tx_size; - int ret, i; - unsigned int netimr0; - - if (netif_msg_ifup(c2_port)) - pr_debug("%s: enabling interface\n", netdev->name); - - /* Set the Rx buffer size based on MTU */ - c2_set_rxbufsize(c2_port); - - /* Allocate DMA'able memory for Tx/Rx host descriptor rings */ - rx_size = c2_port->rx_ring.count * sizeof(struct c2_rx_desc); - tx_size = c2_port->tx_ring.count * sizeof(struct c2_tx_desc); - - c2_port->mem_size = tx_size + rx_size; - c2_port->mem = pci_zalloc_consistent(c2dev->pcidev, c2_port->mem_size, - &c2_port->dma); - if (c2_port->mem == NULL) { - pr_debug("Unable to allocate memory for " - "host descriptor rings\n"); - return -ENOMEM; - } - - /* Create the Rx host descriptor ring */ - if ((ret = - c2_rx_ring_alloc(&c2_port->rx_ring, c2_port->mem, c2_port->dma, - c2dev->mmio_rxp_ring))) { - pr_debug("Unable to create RX ring\n"); - goto bail0; - } - - /* Allocate Rx buffers for the host descriptor ring */ - if (c2_rx_fill(c2_port)) { - pr_debug("Unable to fill RX ring\n"); - goto bail1; - } - - /* Create the Tx host descriptor ring */ - if ((ret = c2_tx_ring_alloc(&c2_port->tx_ring, c2_port->mem + rx_size, - c2_port->dma + rx_size, - c2dev->mmio_txp_ring))) { - pr_debug("Unable to create TX ring\n"); - goto bail1; - } - - /* Set the TX pointer to where we left off */ - c2_port->tx_avail = c2_port->tx_ring.count - 1; - c2_port->tx_ring.to_use = c2_port->tx_ring.to_clean = - c2_port->tx_ring.start + c2dev->cur_tx; - - /* missing: Initialize MAC */ - - BUG_ON(c2_port->tx_ring.to_use != c2_port->tx_ring.to_clean); - - /* Reset the adapter, ensures the driver is in sync with the RXP */ - c2_reset(c2_port); - - /* Reset the READY bit in the sk_buff RXP headers & adapter HRXDQ */ - for (i = 0, elem = c2_port->rx_ring.start; i < c2_port->rx_ring.count; - i++, elem++) { - rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data; - rxp_hdr->flags = 0; - __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), - elem->hw_desc + C2_RXP_FLAGS); - } - - /* Enable network packets */ - netif_start_queue(netdev); - - /* Enable IRQ */ - writel(0, c2dev->regs + C2_IDIS); - netimr0 = readl(c2dev->regs + C2_NIMR0); - netimr0 &= ~(C2_PCI_HTX_INT | C2_PCI_HRX_INT); - writel(netimr0, c2dev->regs + C2_NIMR0); - - /* Tell the stack to ignore arp requests for ipaddrs bound to - * other interfaces. This is needed to prevent the host stack - * from responding to arp requests to the ipaddr bound on the - * rdma interface. - */ - in_dev = in_dev_get(netdev); - IN_DEV_CONF_SET(in_dev, ARP_IGNORE, 1); - in_dev_put(in_dev); - - return 0; - -bail1: - c2_rx_clean(c2_port); - kfree(c2_port->rx_ring.start); - -bail0: - pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem, - c2_port->dma); - - return ret; -} - -static int c2_down(struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - struct c2_dev *c2dev = c2_port->c2dev; - - if (netif_msg_ifdown(c2_port)) - pr_debug("%s: disabling interface\n", - netdev->name); - - /* Wait for all the queued packets to get sent */ - c2_tx_interrupt(netdev); - - /* Disable network packets */ - netif_stop_queue(netdev); - - /* Disable IRQs by clearing the interrupt mask */ - writel(1, c2dev->regs + C2_IDIS); - writel(0, c2dev->regs + C2_NIMR0); - - /* missing: Stop transmitter */ - - /* missing: Stop receiver */ - - /* Reset the adapter, ensures the driver is in sync with the RXP */ - c2_reset(c2_port); - - /* missing: Turn off LEDs here */ - - /* Free all buffers in the host descriptor rings */ - c2_tx_clean(c2_port); - c2_rx_clean(c2_port); - - /* Free the host descriptor rings */ - kfree(c2_port->rx_ring.start); - kfree(c2_port->tx_ring.start); - pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem, - c2_port->dma); - - return 0; -} - -static void c2_reset(struct c2_port *c2_port) -{ - struct c2_dev *c2dev = c2_port->c2dev; - unsigned int cur_rx = c2dev->cur_rx; - - /* Tell the hardware to quiesce */ - C2_SET_CUR_RX(c2dev, cur_rx | C2_PCI_HRX_QUI); - - /* - * The hardware will reset the C2_PCI_HRX_QUI bit once - * the RXP is quiesced. Wait 2 seconds for this. - */ - ssleep(2); - - cur_rx = C2_GET_CUR_RX(c2dev); - - if (cur_rx & C2_PCI_HRX_QUI) - pr_debug("c2_reset: failed to quiesce the hardware!\n"); - - cur_rx &= ~C2_PCI_HRX_QUI; - - c2dev->cur_rx = cur_rx; - - pr_debug("Current RX: %u\n", c2dev->cur_rx); -} - -static int c2_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - struct c2_dev *c2dev = c2_port->c2dev; - struct c2_ring *tx_ring = &c2_port->tx_ring; - struct c2_element *elem; - dma_addr_t mapaddr; - u32 maplen; - unsigned long flags; - unsigned int i; - - spin_lock_irqsave(&c2_port->tx_lock, flags); - - if (unlikely(c2_port->tx_avail < (skb_shinfo(skb)->nr_frags + 1))) { - netif_stop_queue(netdev); - spin_unlock_irqrestore(&c2_port->tx_lock, flags); - - pr_debug("%s: Tx ring full when queue awake!\n", - netdev->name); - return NETDEV_TX_BUSY; - } - - maplen = skb_headlen(skb); - mapaddr = - pci_map_single(c2dev->pcidev, skb->data, maplen, PCI_DMA_TODEVICE); - - elem = tx_ring->to_use; - elem->skb = skb; - elem->mapaddr = mapaddr; - elem->maplen = maplen; - - /* Tell HW to xmit */ - __raw_writeq((__force u64) cpu_to_be64(mapaddr), - elem->hw_desc + C2_TXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(maplen), - elem->hw_desc + C2_TXP_LEN); - __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_READY), - elem->hw_desc + C2_TXP_FLAGS); - - netdev->stats.tx_packets++; - netdev->stats.tx_bytes += maplen; - - /* Loop thru additional data fragments and queue them */ - if (skb_shinfo(skb)->nr_frags) { - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - maplen = skb_frag_size(frag); - mapaddr = skb_frag_dma_map(&c2dev->pcidev->dev, frag, - 0, maplen, DMA_TO_DEVICE); - elem = elem->next; - elem->skb = NULL; - elem->mapaddr = mapaddr; - elem->maplen = maplen; - - /* Tell HW to xmit */ - __raw_writeq((__force u64) cpu_to_be64(mapaddr), - elem->hw_desc + C2_TXP_ADDR); - __raw_writew((__force u16) cpu_to_be16(maplen), - elem->hw_desc + C2_TXP_LEN); - __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_READY), - elem->hw_desc + C2_TXP_FLAGS); - - netdev->stats.tx_packets++; - netdev->stats.tx_bytes += maplen; - } - } - - tx_ring->to_use = elem->next; - c2_port->tx_avail -= (skb_shinfo(skb)->nr_frags + 1); - - if (c2_port->tx_avail <= MAX_SKB_FRAGS + 1) { - netif_stop_queue(netdev); - if (netif_msg_tx_queued(c2_port)) - pr_debug("%s: transmit queue full\n", - netdev->name); - } - - spin_unlock_irqrestore(&c2_port->tx_lock, flags); - - netdev->trans_start = jiffies; - - return NETDEV_TX_OK; -} - -static void c2_tx_timeout(struct net_device *netdev) -{ - struct c2_port *c2_port = netdev_priv(netdev); - - if (netif_msg_timer(c2_port)) - pr_debug("%s: tx timeout\n", netdev->name); - - c2_tx_clean(c2_port); -} - -static int c2_change_mtu(struct net_device *netdev, int new_mtu) -{ - int ret = 0; - - if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) - return -EINVAL; - - netdev->mtu = new_mtu; - - if (netif_running(netdev)) { - c2_down(netdev); - - c2_up(netdev); - } - - return ret; -} - -static const struct net_device_ops c2_netdev = { - .ndo_open = c2_up, - .ndo_stop = c2_down, - .ndo_start_xmit = c2_xmit_frame, - .ndo_tx_timeout = c2_tx_timeout, - .ndo_change_mtu = c2_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -/* Initialize network device */ -static struct net_device *c2_devinit(struct c2_dev *c2dev, - void __iomem * mmio_addr) -{ - struct c2_port *c2_port = NULL; - struct net_device *netdev = alloc_etherdev(sizeof(*c2_port)); - - if (!netdev) { - pr_debug("c2_port etherdev alloc failed"); - return NULL; - } - - SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); - - netdev->netdev_ops = &c2_netdev; - netdev->watchdog_timeo = C2_TX_TIMEOUT; - netdev->irq = c2dev->pcidev->irq; - - c2_port = netdev_priv(netdev); - c2_port->netdev = netdev; - c2_port->c2dev = c2dev; - c2_port->msg_enable = netif_msg_init(debug, default_msg); - c2_port->tx_ring.count = C2_NUM_TX_DESC; - c2_port->rx_ring.count = C2_NUM_RX_DESC; - - spin_lock_init(&c2_port->tx_lock); - - /* Copy our 48-bit ethernet hardware address */ - memcpy_fromio(netdev->dev_addr, mmio_addr + C2_REGS_ENADDR, 6); - - /* Validate the MAC address */ - if (!is_valid_ether_addr(netdev->dev_addr)) { - pr_debug("Invalid MAC Address\n"); - pr_debug("%s: MAC %pM, IRQ %u\n", netdev->name, - netdev->dev_addr, netdev->irq); - free_netdev(netdev); - return NULL; - } - - c2dev->netdev = netdev; - - return netdev; -} - -static int c2_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) -{ - int ret = 0, i; - unsigned long reg0_start, reg0_flags, reg0_len; - unsigned long reg2_start, reg2_flags, reg2_len; - unsigned long reg4_start, reg4_flags, reg4_len; - unsigned kva_map_size; - struct net_device *netdev = NULL; - struct c2_dev *c2dev = NULL; - void __iomem *mmio_regs = NULL; - - printk(KERN_INFO PFX "AMSO1100 Gigabit Ethernet driver v%s loaded\n", - DRV_VERSION); - - /* Enable PCI device */ - ret = pci_enable_device(pcidev); - if (ret) { - printk(KERN_ERR PFX "%s: Unable to enable PCI device\n", - pci_name(pcidev)); - goto bail0; - } - - reg0_start = pci_resource_start(pcidev, BAR_0); - reg0_len = pci_resource_len(pcidev, BAR_0); - reg0_flags = pci_resource_flags(pcidev, BAR_0); - - reg2_start = pci_resource_start(pcidev, BAR_2); - reg2_len = pci_resource_len(pcidev, BAR_2); - reg2_flags = pci_resource_flags(pcidev, BAR_2); - - reg4_start = pci_resource_start(pcidev, BAR_4); - reg4_len = pci_resource_len(pcidev, BAR_4); - reg4_flags = pci_resource_flags(pcidev, BAR_4); - - pr_debug("BAR0 size = 0x%lX bytes\n", reg0_len); - pr_debug("BAR2 size = 0x%lX bytes\n", reg2_len); - pr_debug("BAR4 size = 0x%lX bytes\n", reg4_len); - - /* Make sure PCI base addr are MMIO */ - if (!(reg0_flags & IORESOURCE_MEM) || - !(reg2_flags & IORESOURCE_MEM) || !(reg4_flags & IORESOURCE_MEM)) { - printk(KERN_ERR PFX "PCI regions not an MMIO resource\n"); - ret = -ENODEV; - goto bail1; - } - - /* Check for weird/broken PCI region reporting */ - if ((reg0_len < C2_REG0_SIZE) || - (reg2_len < C2_REG2_SIZE) || (reg4_len < C2_REG4_SIZE)) { - printk(KERN_ERR PFX "Invalid PCI region sizes\n"); - ret = -ENODEV; - goto bail1; - } - - /* Reserve PCI I/O and memory resources */ - ret = pci_request_regions(pcidev, DRV_NAME); - if (ret) { - printk(KERN_ERR PFX "%s: Unable to request regions\n", - pci_name(pcidev)); - goto bail1; - } - - if ((sizeof(dma_addr_t) > 4)) { - ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64)); - if (ret < 0) { - printk(KERN_ERR PFX "64b DMA configuration failed\n"); - goto bail2; - } - } else { - ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32)); - if (ret < 0) { - printk(KERN_ERR PFX "32b DMA configuration failed\n"); - goto bail2; - } - } - - /* Enables bus-mastering on the device */ - pci_set_master(pcidev); - - /* Remap the adapter PCI registers in BAR4 */ - mmio_regs = ioremap_nocache(reg4_start + C2_PCI_REGS_OFFSET, - sizeof(struct c2_adapter_pci_regs)); - if (!mmio_regs) { - printk(KERN_ERR PFX - "Unable to remap adapter PCI registers in BAR4\n"); - ret = -EIO; - goto bail2; - } - - /* Validate PCI regs magic */ - for (i = 0; i < sizeof(c2_magic); i++) { - if (c2_magic[i] != readb(mmio_regs + C2_REGS_MAGIC + i)) { - printk(KERN_ERR PFX "Downlevel Firmware boot loader " - "[%d/%Zd: got 0x%x, exp 0x%x]. Use the cc_flash " - "utility to update your boot loader\n", - i + 1, sizeof(c2_magic), - readb(mmio_regs + C2_REGS_MAGIC + i), - c2_magic[i]); - printk(KERN_ERR PFX "Adapter not claimed\n"); - iounmap(mmio_regs); - ret = -EIO; - goto bail2; - } - } - - /* Validate the adapter version */ - if (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_VERS)) != C2_VERSION) { - printk(KERN_ERR PFX "Version mismatch " - "[fw=%u, c2=%u], Adapter not claimed\n", - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_VERS)), - C2_VERSION); - ret = -EINVAL; - iounmap(mmio_regs); - goto bail2; - } - - /* Validate the adapter IVN */ - if (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_IVN)) != C2_IVN) { - printk(KERN_ERR PFX "Downlevel FIrmware level. You should be using " - "the OpenIB device support kit. " - "[fw=0x%x, c2=0x%x], Adapter not claimed\n", - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_IVN)), - C2_IVN); - ret = -EINVAL; - iounmap(mmio_regs); - goto bail2; - } - - /* Allocate hardware structure */ - c2dev = (struct c2_dev *) ib_alloc_device(sizeof(*c2dev)); - if (!c2dev) { - printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", - pci_name(pcidev)); - ret = -ENOMEM; - iounmap(mmio_regs); - goto bail2; - } - - memset(c2dev, 0, sizeof(*c2dev)); - spin_lock_init(&c2dev->lock); - c2dev->pcidev = pcidev; - c2dev->cur_tx = 0; - - /* Get the last RX index */ - c2dev->cur_rx = - (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_HRX_CUR)) - - 0xffffc000) / sizeof(struct c2_rxp_desc); - - /* Request an interrupt line for the driver */ - ret = request_irq(pcidev->irq, c2_interrupt, IRQF_SHARED, DRV_NAME, c2dev); - if (ret) { - printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n", - pci_name(pcidev), pcidev->irq); - iounmap(mmio_regs); - goto bail3; - } - - /* Set driver specific data */ - pci_set_drvdata(pcidev, c2dev); - - /* Initialize network device */ - if ((netdev = c2_devinit(c2dev, mmio_regs)) == NULL) { - ret = -ENOMEM; - iounmap(mmio_regs); - goto bail4; - } - - /* Save off the actual size prior to unmapping mmio_regs */ - kva_map_size = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_PCI_WINSIZE)); - - /* Unmap the adapter PCI registers in BAR4 */ - iounmap(mmio_regs); - - /* Register network device */ - ret = register_netdev(netdev); - if (ret) { - printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", - ret); - goto bail5; - } - - /* Disable network packets */ - netif_stop_queue(netdev); - - /* Remap the adapter HRXDQ PA space to kernel VA space */ - c2dev->mmio_rxp_ring = ioremap_nocache(reg4_start + C2_RXP_HRXDQ_OFFSET, - C2_RXP_HRXDQ_SIZE); - if (!c2dev->mmio_rxp_ring) { - printk(KERN_ERR PFX "Unable to remap MMIO HRXDQ region\n"); - ret = -EIO; - goto bail6; - } - - /* Remap the adapter HTXDQ PA space to kernel VA space */ - c2dev->mmio_txp_ring = ioremap_nocache(reg4_start + C2_TXP_HTXDQ_OFFSET, - C2_TXP_HTXDQ_SIZE); - if (!c2dev->mmio_txp_ring) { - printk(KERN_ERR PFX "Unable to remap MMIO HTXDQ region\n"); - ret = -EIO; - goto bail7; - } - - /* Save off the current RX index in the last 4 bytes of the TXP Ring */ - C2_SET_CUR_RX(c2dev, c2dev->cur_rx); - - /* Remap the PCI registers in adapter BAR0 to kernel VA space */ - c2dev->regs = ioremap_nocache(reg0_start, reg0_len); - if (!c2dev->regs) { - printk(KERN_ERR PFX "Unable to remap BAR0\n"); - ret = -EIO; - goto bail8; - } - - /* Remap the PCI registers in adapter BAR4 to kernel VA space */ - c2dev->pa = reg4_start + C2_PCI_REGS_OFFSET; - c2dev->kva = ioremap_nocache(reg4_start + C2_PCI_REGS_OFFSET, - kva_map_size); - if (!c2dev->kva) { - printk(KERN_ERR PFX "Unable to remap BAR4\n"); - ret = -EIO; - goto bail9; - } - - /* Print out the MAC address */ - pr_debug("%s: MAC %pM, IRQ %u\n", netdev->name, netdev->dev_addr, - netdev->irq); - - ret = c2_rnic_init(c2dev); - if (ret) { - printk(KERN_ERR PFX "c2_rnic_init failed: %d\n", ret); - goto bail10; - } - - ret = c2_register_device(c2dev); - if (ret) - goto bail10; - - return 0; - - bail10: - iounmap(c2dev->kva); - - bail9: - iounmap(c2dev->regs); - - bail8: - iounmap(c2dev->mmio_txp_ring); - - bail7: - iounmap(c2dev->mmio_rxp_ring); - - bail6: - unregister_netdev(netdev); - - bail5: - free_netdev(netdev); - - bail4: - free_irq(pcidev->irq, c2dev); - - bail3: - ib_dealloc_device(&c2dev->ibdev); - - bail2: - pci_release_regions(pcidev); - - bail1: - pci_disable_device(pcidev); - - bail0: - return ret; -} - -static void c2_remove(struct pci_dev *pcidev) -{ - struct c2_dev *c2dev = pci_get_drvdata(pcidev); - struct net_device *netdev = c2dev->netdev; - - /* Unregister with OpenIB */ - c2_unregister_device(c2dev); - - /* Clean up the RNIC resources */ - c2_rnic_term(c2dev); - - /* Remove network device from the kernel */ - unregister_netdev(netdev); - - /* Free network device */ - free_netdev(netdev); - - /* Free the interrupt line */ - free_irq(pcidev->irq, c2dev); - - /* missing: Turn LEDs off here */ - - /* Unmap adapter PA space */ - iounmap(c2dev->kva); - iounmap(c2dev->regs); - iounmap(c2dev->mmio_txp_ring); - iounmap(c2dev->mmio_rxp_ring); - - /* Free the hardware structure */ - ib_dealloc_device(&c2dev->ibdev); - - /* Release reserved PCI I/O and memory resources */ - pci_release_regions(pcidev); - - /* Disable PCI device */ - pci_disable_device(pcidev); - - /* Clear driver specific data */ - pci_set_drvdata(pcidev, NULL); -} - -static struct pci_driver c2_pci_driver = { - .name = DRV_NAME, - .id_table = c2_pci_table, - .probe = c2_probe, - .remove = c2_remove, -}; - -module_pci_driver(c2_pci_driver); diff --git a/drivers/staging/rdma/amso1100/c2.h b/drivers/staging/rdma/amso1100/c2.h deleted file mode 100644 index 21b565a91fd6..000000000000 --- a/drivers/staging/rdma/amso1100/c2.h +++ /dev/null @@ -1,547 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef __C2_H -#define __C2_H - -#include -#include -#include -#include -#include -#include - -#include "c2_provider.h" -#include "c2_mq.h" -#include "c2_status.h" - -#define DRV_NAME "c2" -#define DRV_VERSION "1.1" -#define PFX DRV_NAME ": " - -#define BAR_0 0 -#define BAR_2 2 -#define BAR_4 4 - -#define RX_BUF_SIZE (1536 + 8) -#define ETH_JUMBO_MTU 9000 -#define C2_MAGIC "CEPHEUS" -#define C2_VERSION 4 -#define C2_IVN (18 & 0x7fffffff) - -#define C2_REG0_SIZE (16 * 1024) -#define C2_REG2_SIZE (2 * 1024 * 1024) -#define C2_REG4_SIZE (256 * 1024 * 1024) -#define C2_NUM_TX_DESC 341 -#define C2_NUM_RX_DESC 256 -#define C2_PCI_REGS_OFFSET (0x10000) -#define C2_RXP_HRXDQ_OFFSET (((C2_REG4_SIZE)/2)) -#define C2_RXP_HRXDQ_SIZE (4096) -#define C2_TXP_HTXDQ_OFFSET (((C2_REG4_SIZE)/2) + C2_RXP_HRXDQ_SIZE) -#define C2_TXP_HTXDQ_SIZE (4096) -#define C2_TX_TIMEOUT (6*HZ) - -/* CEPHEUS */ -static const u8 c2_magic[] = { - 0x43, 0x45, 0x50, 0x48, 0x45, 0x55, 0x53 -}; - -enum adapter_pci_regs { - C2_REGS_MAGIC = 0x0000, - C2_REGS_VERS = 0x0008, - C2_REGS_IVN = 0x000C, - C2_REGS_PCI_WINSIZE = 0x0010, - C2_REGS_Q0_QSIZE = 0x0014, - C2_REGS_Q0_MSGSIZE = 0x0018, - C2_REGS_Q0_POOLSTART = 0x001C, - C2_REGS_Q0_SHARED = 0x0020, - C2_REGS_Q1_QSIZE = 0x0024, - C2_REGS_Q1_MSGSIZE = 0x0028, - C2_REGS_Q1_SHARED = 0x0030, - C2_REGS_Q2_QSIZE = 0x0034, - C2_REGS_Q2_MSGSIZE = 0x0038, - C2_REGS_Q2_SHARED = 0x0040, - C2_REGS_ENADDR = 0x004C, - C2_REGS_RDMA_ENADDR = 0x0054, - C2_REGS_HRX_CUR = 0x006C, -}; - -struct c2_adapter_pci_regs { - char reg_magic[8]; - u32 version; - u32 ivn; - u32 pci_window_size; - u32 q0_q_size; - u32 q0_msg_size; - u32 q0_pool_start; - u32 q0_shared; - u32 q1_q_size; - u32 q1_msg_size; - u32 q1_pool_start; - u32 q1_shared; - u32 q2_q_size; - u32 q2_msg_size; - u32 q2_pool_start; - u32 q2_shared; - u32 log_start; - u32 log_size; - u8 host_enaddr[8]; - u8 rdma_enaddr[8]; - u32 crash_entry; - u32 crash_ready[2]; - u32 fw_txd_cur; - u32 fw_hrxd_cur; - u32 fw_rxd_cur; -}; - -enum pci_regs { - C2_HISR = 0x0000, - C2_DISR = 0x0004, - C2_HIMR = 0x0008, - C2_DIMR = 0x000C, - C2_NISR0 = 0x0010, - C2_NISR1 = 0x0014, - C2_NIMR0 = 0x0018, - C2_NIMR1 = 0x001C, - C2_IDIS = 0x0020, -}; - -enum { - C2_PCI_HRX_INT = 1 << 8, - C2_PCI_HTX_INT = 1 << 17, - C2_PCI_HRX_QUI = 1 << 31, -}; - -/* - * Cepheus registers in BAR0. - */ -struct c2_pci_regs { - u32 hostisr; - u32 dmaisr; - u32 hostimr; - u32 dmaimr; - u32 netisr0; - u32 netisr1; - u32 netimr0; - u32 netimr1; - u32 int_disable; -}; - -/* TXP flags */ -enum c2_txp_flags { - TXP_HTXD_DONE = 0, - TXP_HTXD_READY = 1 << 0, - TXP_HTXD_UNINIT = 1 << 1, -}; - -/* RXP flags */ -enum c2_rxp_flags { - RXP_HRXD_UNINIT = 0, - RXP_HRXD_READY = 1 << 0, - RXP_HRXD_DONE = 1 << 1, -}; - -/* RXP status */ -enum c2_rxp_status { - RXP_HRXD_ZERO = 0, - RXP_HRXD_OK = 1 << 0, - RXP_HRXD_BUF_OV = 1 << 1, -}; - -/* TXP descriptor fields */ -enum txp_desc { - C2_TXP_FLAGS = 0x0000, - C2_TXP_LEN = 0x0002, - C2_TXP_ADDR = 0x0004, -}; - -/* RXP descriptor fields */ -enum rxp_desc { - C2_RXP_FLAGS = 0x0000, - C2_RXP_STATUS = 0x0002, - C2_RXP_COUNT = 0x0004, - C2_RXP_LEN = 0x0006, - C2_RXP_ADDR = 0x0008, -}; - -struct c2_txp_desc { - u16 flags; - u16 len; - u64 addr; -} __attribute__ ((packed)); - -struct c2_rxp_desc { - u16 flags; - u16 status; - u16 count; - u16 len; - u64 addr; -} __attribute__ ((packed)); - -struct c2_rxp_hdr { - u16 flags; - u16 status; - u16 len; - u16 rsvd; -} __attribute__ ((packed)); - -struct c2_tx_desc { - u32 len; - u32 status; - dma_addr_t next_offset; -}; - -struct c2_rx_desc { - u32 len; - u32 status; - dma_addr_t next_offset; -}; - -struct c2_alloc { - u32 last; - u32 max; - spinlock_t lock; - unsigned long *table; -}; - -struct c2_array { - struct { - void **page; - int used; - } *page_list; -}; - -/* - * The MQ shared pointer pool is organized as a linked list of - * chunks. Each chunk contains a linked list of free shared pointers - * that can be allocated to a given user mode client. - * - */ -struct sp_chunk { - struct sp_chunk *next; - dma_addr_t dma_addr; - DEFINE_DMA_UNMAP_ADDR(mapping); - u16 head; - u16 shared_ptr[0]; -}; - -struct c2_pd_table { - u32 last; - u32 max; - spinlock_t lock; - unsigned long *table; -}; - -struct c2_qp_table { - struct idr idr; - spinlock_t lock; -}; - -struct c2_element { - struct c2_element *next; - void *ht_desc; /* host descriptor */ - void __iomem *hw_desc; /* hardware descriptor */ - struct sk_buff *skb; - dma_addr_t mapaddr; - u32 maplen; -}; - -struct c2_ring { - struct c2_element *to_clean; - struct c2_element *to_use; - struct c2_element *start; - unsigned long count; -}; - -struct c2_dev { - struct ib_device ibdev; - void __iomem *regs; - void __iomem *mmio_txp_ring; /* remapped adapter memory for hw rings */ - void __iomem *mmio_rxp_ring; - spinlock_t lock; - struct pci_dev *pcidev; - struct net_device *netdev; - struct net_device *pseudo_netdev; - unsigned int cur_tx; - unsigned int cur_rx; - u32 adapter_handle; - int device_cap_flags; - void __iomem *kva; /* KVA device memory */ - unsigned long pa; /* PA device memory */ - void **qptr_array; - - struct kmem_cache *host_msg_cache; - - struct list_head cca_link; /* adapter list */ - struct list_head eh_wakeup_list; /* event wakeup list */ - wait_queue_head_t req_vq_wo; - - /* Cached RNIC properties */ - struct ib_device_attr props; - - struct c2_pd_table pd_table; - struct c2_qp_table qp_table; - int ports; /* num of GigE ports */ - int devnum; - spinlock_t vqlock; /* sync vbs req MQ */ - - /* Verbs Queues */ - struct c2_mq req_vq; /* Verbs Request MQ */ - struct c2_mq rep_vq; /* Verbs Reply MQ */ - struct c2_mq aeq; /* Async Events MQ */ - - /* Kernel client MQs */ - struct sp_chunk *kern_mqsp_pool; - - /* Device updates these values when posting messages to a host - * target queue */ - u16 req_vq_shared; - u16 rep_vq_shared; - u16 aeq_shared; - u16 irq_claimed; - - /* - * Shared host target pages for user-accessible MQs. - */ - int hthead; /* index of first free entry */ - void *htpages; /* kernel vaddr */ - int htlen; /* length of htpages memory */ - void *htuva; /* user mapped vaddr */ - spinlock_t htlock; /* serialize allocation */ - - u64 adapter_hint_uva; /* access to the activity FIFO */ - - // spinlock_t aeq_lock; - // spinlock_t rnic_lock; - - __be16 *hint_count; - dma_addr_t hint_count_dma; - u16 hints_read; - - int init; /* TRUE if it's ready */ - char ae_cache_name[16]; - char vq_cache_name[16]; -}; - -struct c2_port { - u32 msg_enable; - struct c2_dev *c2dev; - struct net_device *netdev; - - spinlock_t tx_lock; - u32 tx_avail; - struct c2_ring tx_ring; - struct c2_ring rx_ring; - - void *mem; /* PCI memory for host rings */ - dma_addr_t dma; - unsigned long mem_size; - - u32 rx_buf_size; -}; - -/* - * Activity FIFO registers in BAR0. - */ -#define PCI_BAR0_HOST_HINT 0x100 -#define PCI_BAR0_ADAPTER_HINT 0x2000 - -/* - * Ammasso PCI vendor id and Cepheus PCI device id. - */ -#define CQ_ARMED 0x01 -#define CQ_WAIT_FOR_DMA 0x80 - -/* - * The format of a hint is as follows: - * Lower 16 bits are the count of hints for the queue. - * Next 15 bits are the qp_index - * Upper most bit depends on who reads it: - * If read by producer, then it means Full (1) or Not-Full (0) - * If read by consumer, then it means Empty (1) or Not-Empty (0) - */ -#define C2_HINT_MAKE(q_index, hint_count) (((q_index) << 16) | hint_count) -#define C2_HINT_GET_INDEX(hint) (((hint) & 0x7FFF0000) >> 16) -#define C2_HINT_GET_COUNT(hint) ((hint) & 0x0000FFFF) - - -/* - * The following defines the offset in SDRAM for the c2_adapter_pci_regs_t - * struct. - */ -#define C2_ADAPTER_PCI_REGS_OFFSET 0x10000 - -#ifndef readq -static inline u64 readq(const void __iomem * addr) -{ - u64 ret = readl(addr + 4); - ret <<= 32; - ret |= readl(addr); - - return ret; -} -#endif - -#ifndef writeq -static inline void __raw_writeq(u64 val, void __iomem * addr) -{ - __raw_writel((u32) (val), addr); - __raw_writel((u32) (val >> 32), (addr + 4)); -} -#endif - -#define C2_SET_CUR_RX(c2dev, cur_rx) \ - __raw_writel((__force u32) cpu_to_be32(cur_rx), c2dev->mmio_txp_ring + 4092) - -#define C2_GET_CUR_RX(c2dev) \ - be32_to_cpu((__force __be32) readl(c2dev->mmio_txp_ring + 4092)) - -static inline struct c2_dev *to_c2dev(struct ib_device *ibdev) -{ - return container_of(ibdev, struct c2_dev, ibdev); -} - -static inline int c2_errno(void *reply) -{ - switch (c2_wr_get_result(reply)) { - case C2_OK: - return 0; - case CCERR_NO_BUFS: - case CCERR_INSUFFICIENT_RESOURCES: - case CCERR_ZERO_RDMA_READ_RESOURCES: - return -ENOMEM; - case CCERR_MR_IN_USE: - case CCERR_QP_IN_USE: - return -EBUSY; - case CCERR_ADDR_IN_USE: - return -EADDRINUSE; - case CCERR_ADDR_NOT_AVAIL: - return -EADDRNOTAVAIL; - case CCERR_CONN_RESET: - return -ECONNRESET; - case CCERR_NOT_IMPLEMENTED: - case CCERR_INVALID_WQE: - return -ENOSYS; - case CCERR_QP_NOT_PRIVILEGED: - return -EPERM; - case CCERR_STACK_ERROR: - return -EPROTO; - case CCERR_ACCESS_VIOLATION: - case CCERR_BASE_AND_BOUNDS_VIOLATION: - return -EFAULT; - case CCERR_STAG_STATE_NOT_INVALID: - case CCERR_INVALID_ADDRESS: - case CCERR_INVALID_CQ: - case CCERR_INVALID_EP: - case CCERR_INVALID_MODIFIER: - case CCERR_INVALID_MTU: - case CCERR_INVALID_PD_ID: - case CCERR_INVALID_QP: - case CCERR_INVALID_RNIC: - case CCERR_INVALID_STAG: - return -EINVAL; - default: - return -EAGAIN; - } -} - -/* Device */ -int c2_register_device(struct c2_dev *c2dev); -void c2_unregister_device(struct c2_dev *c2dev); -int c2_rnic_init(struct c2_dev *c2dev); -void c2_rnic_term(struct c2_dev *c2dev); -void c2_rnic_interrupt(struct c2_dev *c2dev); -int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask); -int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask); - -/* QPs */ -int c2_alloc_qp(struct c2_dev *c2dev, struct c2_pd *pd, - struct ib_qp_init_attr *qp_attrs, struct c2_qp *qp); -void c2_free_qp(struct c2_dev *c2dev, struct c2_qp *qp); -struct ib_qp *c2_get_qp(struct ib_device *device, int qpn); -int c2_qp_modify(struct c2_dev *c2dev, struct c2_qp *qp, - struct ib_qp_attr *attr, int attr_mask); -int c2_qp_set_read_limits(struct c2_dev *c2dev, struct c2_qp *qp, - int ord, int ird); -int c2_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr, - struct ib_send_wr **bad_wr); -int c2_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr, - struct ib_recv_wr **bad_wr); -void c2_init_qp_table(struct c2_dev *c2dev); -void c2_cleanup_qp_table(struct c2_dev *c2dev); -void c2_set_qp_state(struct c2_qp *, int); -struct c2_qp *c2_find_qpn(struct c2_dev *c2dev, int qpn); - -/* PDs */ -int c2_pd_alloc(struct c2_dev *c2dev, int privileged, struct c2_pd *pd); -void c2_pd_free(struct c2_dev *c2dev, struct c2_pd *pd); -int c2_init_pd_table(struct c2_dev *c2dev); -void c2_cleanup_pd_table(struct c2_dev *c2dev); - -/* CQs */ -int c2_init_cq(struct c2_dev *c2dev, int entries, - struct c2_ucontext *ctx, struct c2_cq *cq); -void c2_free_cq(struct c2_dev *c2dev, struct c2_cq *cq); -void c2_cq_event(struct c2_dev *c2dev, u32 mq_index); -void c2_cq_clean(struct c2_dev *c2dev, struct c2_qp *qp, u32 mq_index); -int c2_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); -int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags); - -/* CM */ -int c2_llp_connect(struct iw_cm_id *cm_id, - struct iw_cm_conn_param *iw_param); -int c2_llp_accept(struct iw_cm_id *cm_id, - struct iw_cm_conn_param *iw_param); -int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, - u8 pdata_len); -int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog); -int c2_llp_service_destroy(struct iw_cm_id *cm_id); - -/* MM */ -int c2_nsmr_register_phys_kern(struct c2_dev *c2dev, u64 *addr_list, - int page_size, int pbl_depth, u32 length, - u32 off, u64 *va, enum c2_acf acf, - struct c2_mr *mr); -int c2_stag_dealloc(struct c2_dev *c2dev, u32 stag_index); - -/* AE */ -void c2_ae_event(struct c2_dev *c2dev, u32 mq_index); - -/* MQSP Allocator */ -int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask, - struct sp_chunk **root); -void c2_free_mqsp_pool(struct c2_dev *c2dev, struct sp_chunk *root); -__be16 *c2_alloc_mqsp(struct c2_dev *c2dev, struct sp_chunk *head, - dma_addr_t *dma_addr, gfp_t gfp_mask); -void c2_free_mqsp(__be16* mqsp); -#endif diff --git a/drivers/staging/rdma/amso1100/c2_ae.c b/drivers/staging/rdma/amso1100/c2_ae.c deleted file mode 100644 index eb7a92b2692f..000000000000 --- a/drivers/staging/rdma/amso1100/c2_ae.c +++ /dev/null @@ -1,327 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include "c2.h" -#include -#include "c2_status.h" -#include "c2_ae.h" - -static int c2_convert_cm_status(u32 c2_status) -{ - switch (c2_status) { - case C2_CONN_STATUS_SUCCESS: - return 0; - case C2_CONN_STATUS_REJECTED: - return -ENETRESET; - case C2_CONN_STATUS_REFUSED: - return -ECONNREFUSED; - case C2_CONN_STATUS_TIMEDOUT: - return -ETIMEDOUT; - case C2_CONN_STATUS_NETUNREACH: - return -ENETUNREACH; - case C2_CONN_STATUS_HOSTUNREACH: - return -EHOSTUNREACH; - case C2_CONN_STATUS_INVALID_RNIC: - return -EINVAL; - case C2_CONN_STATUS_INVALID_QP: - return -EINVAL; - case C2_CONN_STATUS_INVALID_QP_STATE: - return -EINVAL; - case C2_CONN_STATUS_ADDR_NOT_AVAIL: - return -EADDRNOTAVAIL; - default: - printk(KERN_ERR PFX - "%s - Unable to convert CM status: %d\n", - __func__, c2_status); - return -EIO; - } -} - -static const char* to_event_str(int event) -{ - static const char* event_str[] = { - "CCAE_REMOTE_SHUTDOWN", - "CCAE_ACTIVE_CONNECT_RESULTS", - "CCAE_CONNECTION_REQUEST", - "CCAE_LLP_CLOSE_COMPLETE", - "CCAE_TERMINATE_MESSAGE_RECEIVED", - "CCAE_LLP_CONNECTION_RESET", - "CCAE_LLP_CONNECTION_LOST", - "CCAE_LLP_SEGMENT_SIZE_INVALID", - "CCAE_LLP_INVALID_CRC", - "CCAE_LLP_BAD_FPDU", - "CCAE_INVALID_DDP_VERSION", - "CCAE_INVALID_RDMA_VERSION", - "CCAE_UNEXPECTED_OPCODE", - "CCAE_INVALID_DDP_QUEUE_NUMBER", - "CCAE_RDMA_READ_NOT_ENABLED", - "CCAE_RDMA_WRITE_NOT_ENABLED", - "CCAE_RDMA_READ_TOO_SMALL", - "CCAE_NO_L_BIT", - "CCAE_TAGGED_INVALID_STAG", - "CCAE_TAGGED_BASE_BOUNDS_VIOLATION", - "CCAE_TAGGED_ACCESS_RIGHTS_VIOLATION", - "CCAE_TAGGED_INVALID_PD", - "CCAE_WRAP_ERROR", - "CCAE_BAD_CLOSE", - "CCAE_BAD_LLP_CLOSE", - "CCAE_INVALID_MSN_RANGE", - "CCAE_INVALID_MSN_GAP", - "CCAE_IRRQ_OVERFLOW", - "CCAE_IRRQ_MSN_GAP", - "CCAE_IRRQ_MSN_RANGE", - "CCAE_IRRQ_INVALID_STAG", - "CCAE_IRRQ_BASE_BOUNDS_VIOLATION", - "CCAE_IRRQ_ACCESS_RIGHTS_VIOLATION", - "CCAE_IRRQ_INVALID_PD", - "CCAE_IRRQ_WRAP_ERROR", - "CCAE_CQ_SQ_COMPLETION_OVERFLOW", - "CCAE_CQ_RQ_COMPLETION_ERROR", - "CCAE_QP_SRQ_WQE_ERROR", - "CCAE_QP_LOCAL_CATASTROPHIC_ERROR", - "CCAE_CQ_OVERFLOW", - "CCAE_CQ_OPERATION_ERROR", - "CCAE_SRQ_LIMIT_REACHED", - "CCAE_QP_RQ_LIMIT_REACHED", - "CCAE_SRQ_CATASTROPHIC_ERROR", - "CCAE_RNIC_CATASTROPHIC_ERROR" - }; - - if (event < CCAE_REMOTE_SHUTDOWN || - event > CCAE_RNIC_CATASTROPHIC_ERROR) - return ""; - - event -= CCAE_REMOTE_SHUTDOWN; - return event_str[event]; -} - -static const char *to_qp_state_str(int state) -{ - switch (state) { - case C2_QP_STATE_IDLE: - return "C2_QP_STATE_IDLE"; - case C2_QP_STATE_CONNECTING: - return "C2_QP_STATE_CONNECTING"; - case C2_QP_STATE_RTS: - return "C2_QP_STATE_RTS"; - case C2_QP_STATE_CLOSING: - return "C2_QP_STATE_CLOSING"; - case C2_QP_STATE_TERMINATE: - return "C2_QP_STATE_TERMINATE"; - case C2_QP_STATE_ERROR: - return "C2_QP_STATE_ERROR"; - default: - return ""; - } -} - -void c2_ae_event(struct c2_dev *c2dev, u32 mq_index) -{ - struct c2_mq *mq = c2dev->qptr_array[mq_index]; - union c2wr *wr; - void *resource_user_context; - struct iw_cm_event cm_event; - struct ib_event ib_event; - enum c2_resource_indicator resource_indicator; - enum c2_event_id event_id; - unsigned long flags; - int status; - struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event.local_addr; - struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event.remote_addr; - - /* - * retrieve the message - */ - wr = c2_mq_consume(mq); - if (!wr) - return; - - memset(&ib_event, 0, sizeof(ib_event)); - memset(&cm_event, 0, sizeof(cm_event)); - - event_id = c2_wr_get_id(wr); - resource_indicator = be32_to_cpu(wr->ae.ae_generic.resource_type); - resource_user_context = - (void *) (unsigned long) wr->ae.ae_generic.user_context; - - status = cm_event.status = c2_convert_cm_status(c2_wr_get_result(wr)); - - pr_debug("event received c2_dev=%p, event_id=%d, " - "resource_indicator=%d, user_context=%p, status = %d\n", - c2dev, event_id, resource_indicator, resource_user_context, - status); - - switch (resource_indicator) { - case C2_RES_IND_QP:{ - - struct c2_qp *qp = resource_user_context; - struct iw_cm_id *cm_id = qp->cm_id; - struct c2wr_ae_active_connect_results *res; - - if (!cm_id) { - pr_debug("event received, but cm_id is , qp=%p!\n", - qp); - goto ignore_it; - } - pr_debug("%s: event = %s, user_context=%llx, " - "resource_type=%x, " - "resource=%x, qp_state=%s\n", - __func__, - to_event_str(event_id), - (unsigned long long) wr->ae.ae_generic.user_context, - be32_to_cpu(wr->ae.ae_generic.resource_type), - be32_to_cpu(wr->ae.ae_generic.resource), - to_qp_state_str(be32_to_cpu(wr->ae.ae_generic.qp_state))); - - c2_set_qp_state(qp, be32_to_cpu(wr->ae.ae_generic.qp_state)); - - switch (event_id) { - case CCAE_ACTIVE_CONNECT_RESULTS: - res = &wr->ae.ae_active_connect_results; - cm_event.event = IW_CM_EVENT_CONNECT_REPLY; - laddr->sin_addr.s_addr = res->laddr; - raddr->sin_addr.s_addr = res->raddr; - laddr->sin_port = res->lport; - raddr->sin_port = res->rport; - if (status == 0) { - cm_event.private_data_len = - be32_to_cpu(res->private_data_length); - cm_event.private_data = res->private_data; - } else { - spin_lock_irqsave(&qp->lock, flags); - if (qp->cm_id) { - qp->cm_id->rem_ref(qp->cm_id); - qp->cm_id = NULL; - } - spin_unlock_irqrestore(&qp->lock, flags); - cm_event.private_data_len = 0; - cm_event.private_data = NULL; - } - if (cm_id->event_handler) - cm_id->event_handler(cm_id, &cm_event); - break; - case CCAE_TERMINATE_MESSAGE_RECEIVED: - case CCAE_CQ_SQ_COMPLETION_OVERFLOW: - ib_event.device = &c2dev->ibdev; - ib_event.element.qp = &qp->ibqp; - ib_event.event = IB_EVENT_QP_REQ_ERR; - - if (qp->ibqp.event_handler) - qp->ibqp.event_handler(&ib_event, - qp->ibqp. - qp_context); - break; - case CCAE_BAD_CLOSE: - case CCAE_LLP_CLOSE_COMPLETE: - case CCAE_LLP_CONNECTION_RESET: - case CCAE_LLP_CONNECTION_LOST: - BUG_ON(cm_id->event_handler==(void*)0x6b6b6b6b); - - spin_lock_irqsave(&qp->lock, flags); - if (qp->cm_id) { - qp->cm_id->rem_ref(qp->cm_id); - qp->cm_id = NULL; - } - spin_unlock_irqrestore(&qp->lock, flags); - cm_event.event = IW_CM_EVENT_CLOSE; - cm_event.status = 0; - if (cm_id->event_handler) - cm_id->event_handler(cm_id, &cm_event); - break; - default: - BUG_ON(1); - pr_debug("%s:%d Unexpected event_id=%d on QP=%p, " - "CM_ID=%p\n", - __func__, __LINE__, - event_id, qp, cm_id); - break; - } - break; - } - - case C2_RES_IND_EP:{ - - struct c2wr_ae_connection_request *req = - &wr->ae.ae_connection_request; - struct iw_cm_id *cm_id = - resource_user_context; - - pr_debug("C2_RES_IND_EP event_id=%d\n", event_id); - if (event_id != CCAE_CONNECTION_REQUEST) { - pr_debug("%s: Invalid event_id: %d\n", - __func__, event_id); - break; - } - cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; - cm_event.provider_data = (void*)(unsigned long)req->cr_handle; - laddr->sin_addr.s_addr = req->laddr; - raddr->sin_addr.s_addr = req->raddr; - laddr->sin_port = req->lport; - raddr->sin_port = req->rport; - cm_event.private_data_len = - be32_to_cpu(req->private_data_length); - cm_event.private_data = req->private_data; - /* - * Until ird/ord negotiation via MPAv2 support is added, send - * max supported values - */ - cm_event.ird = cm_event.ord = 128; - - if (cm_id->event_handler) - cm_id->event_handler(cm_id, &cm_event); - break; - } - - case C2_RES_IND_CQ:{ - struct c2_cq *cq = - resource_user_context; - - pr_debug("IB_EVENT_CQ_ERR\n"); - ib_event.device = &c2dev->ibdev; - ib_event.element.cq = &cq->ibcq; - ib_event.event = IB_EVENT_CQ_ERR; - - if (cq->ibcq.event_handler) - cq->ibcq.event_handler(&ib_event, - cq->ibcq.cq_context); - break; - } - - default: - printk("Bad resource indicator = %d\n", - resource_indicator); - break; - } - - ignore_it: - c2_mq_free(mq); -} diff --git a/drivers/staging/rdma/amso1100/c2_ae.h b/drivers/staging/rdma/amso1100/c2_ae.h deleted file mode 100644 index 3a065c33b83b..000000000000 --- a/drivers/staging/rdma/amso1100/c2_ae.h +++ /dev/null @@ -1,108 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#ifndef _C2_AE_H_ -#define _C2_AE_H_ - -/* - * WARNING: If you change this file, also bump C2_IVN_BASE - * in common/include/clustercore/c2_ivn.h. - */ - -/* - * Asynchronous Event Identifiers - * - * These start at 0x80 only so it's obvious from inspection that - * they are not work-request statuses. This isn't critical. - * - * NOTE: these event id's must fit in eight bits. - */ -enum c2_event_id { - CCAE_REMOTE_SHUTDOWN = 0x80, - CCAE_ACTIVE_CONNECT_RESULTS, - CCAE_CONNECTION_REQUEST, - CCAE_LLP_CLOSE_COMPLETE, - CCAE_TERMINATE_MESSAGE_RECEIVED, - CCAE_LLP_CONNECTION_RESET, - CCAE_LLP_CONNECTION_LOST, - CCAE_LLP_SEGMENT_SIZE_INVALID, - CCAE_LLP_INVALID_CRC, - CCAE_LLP_BAD_FPDU, - CCAE_INVALID_DDP_VERSION, - CCAE_INVALID_RDMA_VERSION, - CCAE_UNEXPECTED_OPCODE, - CCAE_INVALID_DDP_QUEUE_NUMBER, - CCAE_RDMA_READ_NOT_ENABLED, - CCAE_RDMA_WRITE_NOT_ENABLED, - CCAE_RDMA_READ_TOO_SMALL, - CCAE_NO_L_BIT, - CCAE_TAGGED_INVALID_STAG, - CCAE_TAGGED_BASE_BOUNDS_VIOLATION, - CCAE_TAGGED_ACCESS_RIGHTS_VIOLATION, - CCAE_TAGGED_INVALID_PD, - CCAE_WRAP_ERROR, - CCAE_BAD_CLOSE, - CCAE_BAD_LLP_CLOSE, - CCAE_INVALID_MSN_RANGE, - CCAE_INVALID_MSN_GAP, - CCAE_IRRQ_OVERFLOW, - CCAE_IRRQ_MSN_GAP, - CCAE_IRRQ_MSN_RANGE, - CCAE_IRRQ_INVALID_STAG, - CCAE_IRRQ_BASE_BOUNDS_VIOLATION, - CCAE_IRRQ_ACCESS_RIGHTS_VIOLATION, - CCAE_IRRQ_INVALID_PD, - CCAE_IRRQ_WRAP_ERROR, - CCAE_CQ_SQ_COMPLETION_OVERFLOW, - CCAE_CQ_RQ_COMPLETION_ERROR, - CCAE_QP_SRQ_WQE_ERROR, - CCAE_QP_LOCAL_CATASTROPHIC_ERROR, - CCAE_CQ_OVERFLOW, - CCAE_CQ_OPERATION_ERROR, - CCAE_SRQ_LIMIT_REACHED, - CCAE_QP_RQ_LIMIT_REACHED, - CCAE_SRQ_CATASTROPHIC_ERROR, - CCAE_RNIC_CATASTROPHIC_ERROR -/* WARNING If you add more id's, make sure their values fit in eight bits. */ -}; - -/* - * Resource Indicators and Identifiers - */ -enum c2_resource_indicator { - C2_RES_IND_QP = 1, - C2_RES_IND_EP, - C2_RES_IND_CQ, - C2_RES_IND_SRQ, -}; - -#endif /* _C2_AE_H_ */ diff --git a/drivers/staging/rdma/amso1100/c2_alloc.c b/drivers/staging/rdma/amso1100/c2_alloc.c deleted file mode 100644 index 039872dfabbc..000000000000 --- a/drivers/staging/rdma/amso1100/c2_alloc.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "c2.h" - -static int c2_alloc_mqsp_chunk(struct c2_dev *c2dev, gfp_t gfp_mask, - struct sp_chunk **head) -{ - int i; - struct sp_chunk *new_head; - dma_addr_t dma_addr; - - new_head = dma_alloc_coherent(&c2dev->pcidev->dev, PAGE_SIZE, - &dma_addr, gfp_mask); - if (new_head == NULL) - return -ENOMEM; - - new_head->dma_addr = dma_addr; - dma_unmap_addr_set(new_head, mapping, new_head->dma_addr); - - new_head->next = NULL; - new_head->head = 0; - - /* build list where each index is the next free slot */ - for (i = 0; - i < (PAGE_SIZE - sizeof(struct sp_chunk) - - sizeof(u16)) / sizeof(u16) - 1; - i++) { - new_head->shared_ptr[i] = i + 1; - } - /* terminate list */ - new_head->shared_ptr[i] = 0xFFFF; - - *head = new_head; - return 0; -} - -int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask, - struct sp_chunk **root) -{ - return c2_alloc_mqsp_chunk(c2dev, gfp_mask, root); -} - -void c2_free_mqsp_pool(struct c2_dev *c2dev, struct sp_chunk *root) -{ - struct sp_chunk *next; - - while (root) { - next = root->next; - dma_free_coherent(&c2dev->pcidev->dev, PAGE_SIZE, root, - dma_unmap_addr(root, mapping)); - root = next; - } -} - -__be16 *c2_alloc_mqsp(struct c2_dev *c2dev, struct sp_chunk *head, - dma_addr_t *dma_addr, gfp_t gfp_mask) -{ - u16 mqsp; - - while (head) { - mqsp = head->head; - if (mqsp != 0xFFFF) { - head->head = head->shared_ptr[mqsp]; - break; - } else if (head->next == NULL) { - if (c2_alloc_mqsp_chunk(c2dev, gfp_mask, &head->next) == - 0) { - head = head->next; - mqsp = head->head; - head->head = head->shared_ptr[mqsp]; - break; - } else - return NULL; - } else - head = head->next; - } - if (head) { - *dma_addr = head->dma_addr + - ((unsigned long) &(head->shared_ptr[mqsp]) - - (unsigned long) head); - pr_debug("%s addr %p dma_addr %llx\n", __func__, - &(head->shared_ptr[mqsp]), (unsigned long long) *dma_addr); - return (__force __be16 *) &(head->shared_ptr[mqsp]); - } - return NULL; -} - -void c2_free_mqsp(__be16 *mqsp) -{ - struct sp_chunk *head; - u16 idx; - - /* The chunk containing this ptr begins at the page boundary */ - head = (struct sp_chunk *) ((unsigned long) mqsp & PAGE_MASK); - - /* Link head to new mqsp */ - *mqsp = (__force __be16) head->head; - - /* Compute the shared_ptr index */ - idx = (offset_in_page(mqsp)) >> 1; - idx -= (unsigned long) &(((struct sp_chunk *) 0)->shared_ptr[0]) >> 1; - - /* Point this index at the head */ - head->shared_ptr[idx] = head->head; - - /* Point head at this index */ - head->head = idx; -} diff --git a/drivers/staging/rdma/amso1100/c2_cm.c b/drivers/staging/rdma/amso1100/c2_cm.c deleted file mode 100644 index f8dbdb9e0f66..000000000000 --- a/drivers/staging/rdma/amso1100/c2_cm.c +++ /dev/null @@ -1,458 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ -#include - -#include "c2.h" -#include "c2_wr.h" -#include "c2_vq.h" -#include - -int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) -{ - struct c2_dev *c2dev = to_c2dev(cm_id->device); - struct ib_qp *ibqp; - struct c2_qp *qp; - struct c2wr_qp_connect_req *wr; /* variable size needs a malloc. */ - struct c2_vq_req *vq_req; - int err; - struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; - - if (cm_id->remote_addr.ss_family != AF_INET) - return -ENOSYS; - - ibqp = c2_get_qp(cm_id->device, iw_param->qpn); - if (!ibqp) - return -EINVAL; - qp = to_c2qp(ibqp); - - /* Associate QP <--> CM_ID */ - cm_id->provider_data = qp; - cm_id->add_ref(cm_id); - qp->cm_id = cm_id; - - /* - * only support the max private_data length - */ - if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { - err = -EINVAL; - goto bail0; - } - /* - * Set the rdma read limits - */ - err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); - if (err) - goto bail0; - - /* - * Create and send a WR_QP_CONNECT... - */ - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - err = -ENOMEM; - goto bail0; - } - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - err = -ENOMEM; - goto bail1; - } - - c2_wr_set_id(wr, CCWR_QP_CONNECT); - wr->hdr.context = 0; - wr->rnic_handle = c2dev->adapter_handle; - wr->qp_handle = qp->adapter_handle; - - wr->remote_addr = raddr->sin_addr.s_addr; - wr->remote_port = raddr->sin_port; - - /* - * Move any private data from the callers's buf into - * the WR. - */ - if (iw_param->private_data) { - wr->private_data_length = - cpu_to_be32(iw_param->private_data_len); - memcpy(&wr->private_data[0], iw_param->private_data, - iw_param->private_data_len); - } else - wr->private_data_length = 0; - - /* - * Send WR to adapter. NOTE: There is no synch reply from - * the adapter. - */ - err = vq_send_wr(c2dev, (union c2wr *) wr); - vq_req_free(c2dev, vq_req); - - bail1: - kfree(wr); - bail0: - if (err) { - /* - * If we fail, release reference on QP and - * disassociate QP from CM_ID - */ - cm_id->provider_data = NULL; - qp->cm_id = NULL; - cm_id->rem_ref(cm_id); - } - return err; -} - -int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog) -{ - struct c2_dev *c2dev; - struct c2wr_ep_listen_create_req wr; - struct c2wr_ep_listen_create_rep *reply; - struct c2_vq_req *vq_req; - int err; - struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; - - if (cm_id->local_addr.ss_family != AF_INET) - return -ENOSYS; - - c2dev = to_c2dev(cm_id->device); - if (c2dev == NULL) - return -EINVAL; - - /* - * Allocate verbs request. - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - /* - * Build the WR - */ - c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE); - wr.hdr.context = (u64) (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.local_addr = laddr->sin_addr.s_addr; - wr.local_port = laddr->sin_port; - wr.backlog = cpu_to_be32(backlog); - wr.user_context = (u64) (unsigned long) cm_id; - - /* - * Reference the request struct. Dereferenced in the int handler. - */ - vq_req_get(c2dev, vq_req); - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - /* - * Wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail0; - - /* - * Process reply - */ - reply = - (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail1; - } - - if ((err = c2_errno(reply)) != 0) - goto bail1; - - /* - * Keep the adapter handle. Used in subsequent destroy - */ - cm_id->provider_data = (void*)(unsigned long) reply->ep_handle; - - /* - * free vq stuff - */ - vq_repbuf_free(c2dev, reply); - vq_req_free(c2dev, vq_req); - - return 0; - - bail1: - vq_repbuf_free(c2dev, reply); - bail0: - vq_req_free(c2dev, vq_req); - return err; -} - - -int c2_llp_service_destroy(struct iw_cm_id *cm_id) -{ - - struct c2_dev *c2dev; - struct c2wr_ep_listen_destroy_req wr; - struct c2wr_ep_listen_destroy_rep *reply; - struct c2_vq_req *vq_req; - int err; - - c2dev = to_c2dev(cm_id->device); - if (c2dev == NULL) - return -EINVAL; - - /* - * Allocate verbs request. - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - /* - * Build the WR - */ - c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.ep_handle = (u32)(unsigned long)cm_id->provider_data; - - /* - * reference the request struct. dereferenced in the int handler. - */ - vq_req_get(c2dev, vq_req); - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - /* - * Wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail0; - - /* - * Process reply - */ - reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - vq_repbuf_free(c2dev, reply); - bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) -{ - struct c2_dev *c2dev = to_c2dev(cm_id->device); - struct c2_qp *qp; - struct ib_qp *ibqp; - struct c2wr_cr_accept_req *wr; /* variable length WR */ - struct c2_vq_req *vq_req; - struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */ - int err; - - ibqp = c2_get_qp(cm_id->device, iw_param->qpn); - if (!ibqp) - return -EINVAL; - qp = to_c2qp(ibqp); - - /* Set the RDMA read limits */ - err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); - if (err) - goto bail0; - - /* Allocate verbs request. */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - err = -ENOMEM; - goto bail0; - } - vq_req->qp = qp; - vq_req->cm_id = cm_id; - vq_req->event = IW_CM_EVENT_ESTABLISHED; - - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - err = -ENOMEM; - goto bail1; - } - - /* Build the WR */ - c2_wr_set_id(wr, CCWR_CR_ACCEPT); - wr->hdr.context = (unsigned long) vq_req; - wr->rnic_handle = c2dev->adapter_handle; - wr->ep_handle = (u32) (unsigned long) cm_id->provider_data; - wr->qp_handle = qp->adapter_handle; - - /* Replace the cr_handle with the QP after accept */ - cm_id->provider_data = qp; - cm_id->add_ref(cm_id); - qp->cm_id = cm_id; - - cm_id->provider_data = qp; - - /* Validate private_data length */ - if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { - err = -EINVAL; - goto bail1; - } - - if (iw_param->private_data) { - wr->private_data_length = cpu_to_be32(iw_param->private_data_len); - memcpy(&wr->private_data[0], - iw_param->private_data, iw_param->private_data_len); - } else - wr->private_data_length = 0; - - /* Reference the request struct. Dereferenced in the int handler. */ - vq_req_get(c2dev, vq_req); - - /* Send WR to adapter */ - err = vq_send_wr(c2dev, (union c2wr *) wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - /* Wait for reply from adapter */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail1; - - /* Check that reply is present */ - reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail1; - } - - err = c2_errno(reply); - vq_repbuf_free(c2dev, reply); - - if (!err) - c2_set_qp_state(qp, C2_QP_STATE_RTS); - bail1: - kfree(wr); - vq_req_free(c2dev, vq_req); - bail0: - if (err) { - /* - * If we fail, release reference on QP and - * disassociate QP from CM_ID - */ - cm_id->provider_data = NULL; - qp->cm_id = NULL; - cm_id->rem_ref(cm_id); - } - return err; -} - -int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) -{ - struct c2_dev *c2dev; - struct c2wr_cr_reject_req wr; - struct c2_vq_req *vq_req; - struct c2wr_cr_reject_rep *reply; - int err; - - c2dev = to_c2dev(cm_id->device); - - /* - * Allocate verbs request. - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - /* - * Build the WR - */ - c2_wr_set_id(&wr, CCWR_CR_REJECT); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.ep_handle = (u32) (unsigned long) cm_id->provider_data; - - /* - * reference the request struct. dereferenced in the int handler. - */ - vq_req_get(c2dev, vq_req); - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - /* - * Wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail0; - - /* - * Process reply - */ - reply = (struct c2wr_cr_reject_rep *) (unsigned long) - vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - err = c2_errno(reply); - /* - * free vq stuff - */ - vq_repbuf_free(c2dev, reply); - - bail0: - vq_req_free(c2dev, vq_req); - return err; -} diff --git a/drivers/staging/rdma/amso1100/c2_cq.c b/drivers/staging/rdma/amso1100/c2_cq.c deleted file mode 100644 index 7ad0c082485a..000000000000 --- a/drivers/staging/rdma/amso1100/c2_cq.c +++ /dev/null @@ -1,437 +0,0 @@ -/* - * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. - * Copyright (c) 2005 Cisco Systems, Inc. All rights reserved. - * Copyright (c) 2005 Mellanox Technologies. All rights reserved. - * Copyright (c) 2004 Voltaire, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ -#include - -#include "c2.h" -#include "c2_vq.h" -#include "c2_status.h" - -#define C2_CQ_MSG_SIZE ((sizeof(struct c2wr_ce) + 32-1) & ~(32-1)) - -static struct c2_cq *c2_cq_get(struct c2_dev *c2dev, int cqn) -{ - struct c2_cq *cq; - unsigned long flags; - - spin_lock_irqsave(&c2dev->lock, flags); - cq = c2dev->qptr_array[cqn]; - if (!cq) { - spin_unlock_irqrestore(&c2dev->lock, flags); - return NULL; - } - atomic_inc(&cq->refcount); - spin_unlock_irqrestore(&c2dev->lock, flags); - return cq; -} - -static void c2_cq_put(struct c2_cq *cq) -{ - if (atomic_dec_and_test(&cq->refcount)) - wake_up(&cq->wait); -} - -void c2_cq_event(struct c2_dev *c2dev, u32 mq_index) -{ - struct c2_cq *cq; - - cq = c2_cq_get(c2dev, mq_index); - if (!cq) { - printk("discarding events on destroyed CQN=%d\n", mq_index); - return; - } - - (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); - c2_cq_put(cq); -} - -void c2_cq_clean(struct c2_dev *c2dev, struct c2_qp *qp, u32 mq_index) -{ - struct c2_cq *cq; - struct c2_mq *q; - - cq = c2_cq_get(c2dev, mq_index); - if (!cq) - return; - - spin_lock_irq(&cq->lock); - q = &cq->mq; - if (q && !c2_mq_empty(q)) { - u16 priv = q->priv; - struct c2wr_ce *msg; - - while (priv != be16_to_cpu(*q->shared)) { - msg = (struct c2wr_ce *) - (q->msg_pool.host + priv * q->msg_size); - if (msg->qp_user_context == (u64) (unsigned long) qp) { - msg->qp_user_context = (u64) 0; - } - priv = (priv + 1) % q->q_size; - } - } - spin_unlock_irq(&cq->lock); - c2_cq_put(cq); -} - -static inline enum ib_wc_status c2_cqe_status_to_openib(u8 status) -{ - switch (status) { - case C2_OK: - return IB_WC_SUCCESS; - case CCERR_FLUSHED: - return IB_WC_WR_FLUSH_ERR; - case CCERR_BASE_AND_BOUNDS_VIOLATION: - return IB_WC_LOC_PROT_ERR; - case CCERR_ACCESS_VIOLATION: - return IB_WC_LOC_ACCESS_ERR; - case CCERR_TOTAL_LENGTH_TOO_BIG: - return IB_WC_LOC_LEN_ERR; - case CCERR_INVALID_WINDOW: - return IB_WC_MW_BIND_ERR; - default: - return IB_WC_GENERAL_ERR; - } -} - - -static inline int c2_poll_one(struct c2_dev *c2dev, - struct c2_cq *cq, struct ib_wc *entry) -{ - struct c2wr_ce *ce; - struct c2_qp *qp; - int is_recv = 0; - - ce = c2_mq_consume(&cq->mq); - if (!ce) { - return -EAGAIN; - } - - /* - * if the qp returned is null then this qp has already - * been freed and we are unable process the completion. - * try pulling the next message - */ - while ((qp = - (struct c2_qp *) (unsigned long) ce->qp_user_context) == NULL) { - c2_mq_free(&cq->mq); - ce = c2_mq_consume(&cq->mq); - if (!ce) - return -EAGAIN; - } - - entry->status = c2_cqe_status_to_openib(c2_wr_get_result(ce)); - entry->wr_id = ce->hdr.context; - entry->qp = &qp->ibqp; - entry->wc_flags = 0; - entry->slid = 0; - entry->sl = 0; - entry->src_qp = 0; - entry->dlid_path_bits = 0; - entry->pkey_index = 0; - - switch (c2_wr_get_id(ce)) { - case C2_WR_TYPE_SEND: - entry->opcode = IB_WC_SEND; - break; - case C2_WR_TYPE_RDMA_WRITE: - entry->opcode = IB_WC_RDMA_WRITE; - break; - case C2_WR_TYPE_RDMA_READ: - entry->opcode = IB_WC_RDMA_READ; - break; - case C2_WR_TYPE_RECV: - entry->byte_len = be32_to_cpu(ce->bytes_rcvd); - entry->opcode = IB_WC_RECV; - is_recv = 1; - break; - default: - break; - } - - /* consume the WQEs */ - if (is_recv) - c2_mq_lconsume(&qp->rq_mq, 1); - else - c2_mq_lconsume(&qp->sq_mq, - be32_to_cpu(c2_wr_get_wqe_count(ce)) + 1); - - /* free the message */ - c2_mq_free(&cq->mq); - - return 0; -} - -int c2_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) -{ - struct c2_dev *c2dev = to_c2dev(ibcq->device); - struct c2_cq *cq = to_c2cq(ibcq); - unsigned long flags; - int npolled, err; - - spin_lock_irqsave(&cq->lock, flags); - - for (npolled = 0; npolled < num_entries; ++npolled) { - - err = c2_poll_one(c2dev, cq, entry + npolled); - if (err) - break; - } - - spin_unlock_irqrestore(&cq->lock, flags); - - return npolled; -} - -int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) -{ - struct c2_mq_shared __iomem *shared; - struct c2_cq *cq; - unsigned long flags; - int ret = 0; - - cq = to_c2cq(ibcq); - shared = cq->mq.peer; - - if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP) - writeb(C2_CQ_NOTIFICATION_TYPE_NEXT, &shared->notification_type); - else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED) - writeb(C2_CQ_NOTIFICATION_TYPE_NEXT_SE, &shared->notification_type); - else - return -EINVAL; - - writeb(CQ_WAIT_FOR_DMA | CQ_ARMED, &shared->armed); - - /* - * Now read back shared->armed to make the PCI - * write synchronous. This is necessary for - * correct cq notification semantics. - */ - readb(&shared->armed); - - if (notify_flags & IB_CQ_REPORT_MISSED_EVENTS) { - spin_lock_irqsave(&cq->lock, flags); - ret = !c2_mq_empty(&cq->mq); - spin_unlock_irqrestore(&cq->lock, flags); - } - - return ret; -} - -static void c2_free_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq) -{ - dma_free_coherent(&c2dev->pcidev->dev, mq->q_size * mq->msg_size, - mq->msg_pool.host, dma_unmap_addr(mq, mapping)); -} - -static int c2_alloc_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq, - size_t q_size, size_t msg_size) -{ - u8 *pool_start; - - if (q_size > SIZE_MAX / msg_size) - return -EINVAL; - - pool_start = dma_alloc_coherent(&c2dev->pcidev->dev, q_size * msg_size, - &mq->host_dma, GFP_KERNEL); - if (!pool_start) - return -ENOMEM; - - c2_mq_rep_init(mq, - 0, /* index (currently unknown) */ - q_size, - msg_size, - pool_start, - NULL, /* peer (currently unknown) */ - C2_MQ_HOST_TARGET); - - dma_unmap_addr_set(mq, mapping, mq->host_dma); - - return 0; -} - -int c2_init_cq(struct c2_dev *c2dev, int entries, - struct c2_ucontext *ctx, struct c2_cq *cq) -{ - struct c2wr_cq_create_req wr; - struct c2wr_cq_create_rep *reply; - unsigned long peer_pa; - struct c2_vq_req *vq_req; - int err; - - might_sleep(); - - cq->ibcq.cqe = entries - 1; - cq->is_kernel = !ctx; - - /* Allocate a shared pointer */ - cq->mq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &cq->mq.shared_dma, GFP_KERNEL); - if (!cq->mq.shared) - return -ENOMEM; - - /* Allocate pages for the message pool */ - err = c2_alloc_cq_buf(c2dev, &cq->mq, entries + 1, C2_CQ_MSG_SIZE); - if (err) - goto bail0; - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - err = -ENOMEM; - goto bail1; - } - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_CQ_CREATE); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.msg_size = cpu_to_be32(cq->mq.msg_size); - wr.depth = cpu_to_be32(cq->mq.q_size); - wr.shared_ht = cpu_to_be64(cq->mq.shared_dma); - wr.msg_pool = cpu_to_be64(cq->mq.host_dma); - wr.user_context = (u64) (unsigned long) (cq); - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail2; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail2; - - reply = (struct c2wr_cq_create_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail2; - } - - if ((err = c2_errno(reply)) != 0) - goto bail3; - - cq->adapter_handle = reply->cq_handle; - cq->mq.index = be32_to_cpu(reply->mq_index); - - peer_pa = c2dev->pa + be32_to_cpu(reply->adapter_shared); - cq->mq.peer = ioremap_nocache(peer_pa, PAGE_SIZE); - if (!cq->mq.peer) { - err = -ENOMEM; - goto bail3; - } - - vq_repbuf_free(c2dev, reply); - vq_req_free(c2dev, vq_req); - - spin_lock_init(&cq->lock); - atomic_set(&cq->refcount, 1); - init_waitqueue_head(&cq->wait); - - /* - * Use the MQ index allocated by the adapter to - * store the CQ in the qptr_array - */ - cq->cqn = cq->mq.index; - c2dev->qptr_array[cq->cqn] = cq; - - return 0; - -bail3: - vq_repbuf_free(c2dev, reply); -bail2: - vq_req_free(c2dev, vq_req); -bail1: - c2_free_cq_buf(c2dev, &cq->mq); -bail0: - c2_free_mqsp(cq->mq.shared); - - return err; -} - -void c2_free_cq(struct c2_dev *c2dev, struct c2_cq *cq) -{ - int err; - struct c2_vq_req *vq_req; - struct c2wr_cq_destroy_req wr; - struct c2wr_cq_destroy_rep *reply; - - might_sleep(); - - /* Clear CQ from the qptr array */ - spin_lock_irq(&c2dev->lock); - c2dev->qptr_array[cq->mq.index] = NULL; - atomic_dec(&cq->refcount); - spin_unlock_irq(&c2dev->lock); - - wait_event(cq->wait, !atomic_read(&cq->refcount)); - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - goto bail0; - } - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_CQ_DESTROY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.cq_handle = cq->adapter_handle; - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail1; - - reply = (struct c2wr_cq_destroy_rep *) (unsigned long) (vq_req->reply_msg); - if (reply) - vq_repbuf_free(c2dev, reply); -bail1: - vq_req_free(c2dev, vq_req); -bail0: - if (cq->is_kernel) { - c2_free_cq_buf(c2dev, &cq->mq); - } - - return; -} diff --git a/drivers/staging/rdma/amso1100/c2_intr.c b/drivers/staging/rdma/amso1100/c2_intr.c deleted file mode 100644 index 74b32a971124..000000000000 --- a/drivers/staging/rdma/amso1100/c2_intr.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include "c2.h" -#include -#include "c2_vq.h" - -static void handle_mq(struct c2_dev *c2dev, u32 index); -static void handle_vq(struct c2_dev *c2dev, u32 mq_index); - -/* - * Handle RNIC interrupts - */ -void c2_rnic_interrupt(struct c2_dev *c2dev) -{ - unsigned int mq_index; - - while (c2dev->hints_read != be16_to_cpu(*c2dev->hint_count)) { - mq_index = readl(c2dev->regs + PCI_BAR0_HOST_HINT); - if (mq_index & 0x80000000) { - break; - } - - c2dev->hints_read++; - handle_mq(c2dev, mq_index); - } - -} - -/* - * Top level MQ handler - */ -static void handle_mq(struct c2_dev *c2dev, u32 mq_index) -{ - if (c2dev->qptr_array[mq_index] == NULL) { - pr_debug("handle_mq: stray activity for mq_index=%d\n", - mq_index); - return; - } - - switch (mq_index) { - case (0): - /* - * An index of 0 in the activity queue - * indicates the req vq now has messages - * available... - * - * Wake up any waiters waiting on req VQ - * message availability. - */ - wake_up(&c2dev->req_vq_wo); - break; - case (1): - handle_vq(c2dev, mq_index); - break; - case (2): - /* We have to purge the VQ in case there are pending - * accept reply requests that would result in the - * generation of an ESTABLISHED event. If we don't - * generate these first, a CLOSE event could end up - * being delivered before the ESTABLISHED event. - */ - handle_vq(c2dev, 1); - - c2_ae_event(c2dev, mq_index); - break; - default: - /* There is no event synchronization between CQ events - * and AE or CM events. In fact, CQE could be - * delivered for all of the I/O up to and including the - * FLUSH for a peer disconenct prior to the ESTABLISHED - * event being delivered to the app. The reason for this - * is that CM events are delivered on a thread, while AE - * and CM events are delivered on interrupt context. - */ - c2_cq_event(c2dev, mq_index); - break; - } - - return; -} - -/* - * Handles verbs WR replies. - */ -static void handle_vq(struct c2_dev *c2dev, u32 mq_index) -{ - void *adapter_msg, *reply_msg; - struct c2wr_hdr *host_msg; - struct c2wr_hdr tmp; - struct c2_mq *reply_vq; - struct c2_vq_req *req; - struct iw_cm_event cm_event; - int err; - - reply_vq = c2dev->qptr_array[mq_index]; - - /* - * get next msg from mq_index into adapter_msg. - * don't free it yet. - */ - adapter_msg = c2_mq_consume(reply_vq); - if (adapter_msg == NULL) { - return; - } - - host_msg = vq_repbuf_alloc(c2dev); - - /* - * If we can't get a host buffer, then we'll still - * wakeup the waiter, we just won't give him the msg. - * It is assumed the waiter will deal with this... - */ - if (!host_msg) { - pr_debug("handle_vq: no repbufs!\n"); - - /* - * just copy the WR header into a local variable. - * this allows us to still demux on the context - */ - host_msg = &tmp; - memcpy(host_msg, adapter_msg, sizeof(tmp)); - reply_msg = NULL; - } else { - memcpy(host_msg, adapter_msg, reply_vq->msg_size); - reply_msg = host_msg; - } - - /* - * consume the msg from the MQ - */ - c2_mq_free(reply_vq); - - /* - * wakeup the waiter. - */ - req = (struct c2_vq_req *) (unsigned long) host_msg->context; - if (req == NULL) { - /* - * We should never get here, as the adapter should - * never send us a reply that we're not expecting. - */ - if (reply_msg != NULL) - vq_repbuf_free(c2dev, host_msg); - pr_debug("handle_vq: UNEXPECTEDLY got NULL req\n"); - return; - } - - if (reply_msg) - err = c2_errno(reply_msg); - else - err = -ENOMEM; - - if (!err) switch (req->event) { - case IW_CM_EVENT_ESTABLISHED: - c2_set_qp_state(req->qp, - C2_QP_STATE_RTS); - /* - * Until ird/ord negotiation via MPAv2 support is added, send - * max supported values - */ - cm_event.ird = cm_event.ord = 128; - case IW_CM_EVENT_CLOSE: - - /* - * Move the QP to RTS if this is - * the established event - */ - cm_event.event = req->event; - cm_event.status = 0; - cm_event.local_addr = req->cm_id->local_addr; - cm_event.remote_addr = req->cm_id->remote_addr; - cm_event.private_data = NULL; - cm_event.private_data_len = 0; - req->cm_id->event_handler(req->cm_id, &cm_event); - break; - default: - break; - } - - req->reply_msg = (u64) (unsigned long) (reply_msg); - atomic_set(&req->reply_ready, 1); - wake_up(&req->wait_object); - - /* - * If the request was cancelled, then this put will - * free the vq_req memory...and reply_msg!!! - */ - vq_req_put(c2dev, req); -} diff --git a/drivers/staging/rdma/amso1100/c2_mm.c b/drivers/staging/rdma/amso1100/c2_mm.c deleted file mode 100644 index 25081e2913de..000000000000 --- a/drivers/staging/rdma/amso1100/c2_mm.c +++ /dev/null @@ -1,377 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include - -#include "c2.h" -#include "c2_vq.h" - -#define PBL_VIRT 1 -#define PBL_PHYS 2 - -/* - * Send all the PBL messages to convey the remainder of the PBL - * Wait for the adapter's reply on the last one. - * This is indicated by setting the MEM_PBL_COMPLETE in the flags. - * - * NOTE: vq_req is _not_ freed by this function. The VQ Host - * Reply buffer _is_ freed by this function. - */ -static int -send_pbl_messages(struct c2_dev *c2dev, __be32 stag_index, - unsigned long va, u32 pbl_depth, - struct c2_vq_req *vq_req, int pbl_type) -{ - u32 pbe_count; /* amt that fits in a PBL msg */ - u32 count; /* amt in this PBL MSG. */ - struct c2wr_nsmr_pbl_req *wr; /* PBL WR ptr */ - struct c2wr_nsmr_pbl_rep *reply; /* reply ptr */ - int err, pbl_virt, pbl_index, i; - - switch (pbl_type) { - case PBL_VIRT: - pbl_virt = 1; - break; - case PBL_PHYS: - pbl_virt = 0; - break; - default: - return -EINVAL; - break; - } - - pbe_count = (c2dev->req_vq.msg_size - - sizeof(struct c2wr_nsmr_pbl_req)) / sizeof(u64); - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - return -ENOMEM; - } - c2_wr_set_id(wr, CCWR_NSMR_PBL); - - /* - * Only the last PBL message will generate a reply from the verbs, - * so we set the context to 0 indicating there is no kernel verbs - * handler blocked awaiting this reply. - */ - wr->hdr.context = 0; - wr->rnic_handle = c2dev->adapter_handle; - wr->stag_index = stag_index; /* already swapped */ - wr->flags = 0; - pbl_index = 0; - while (pbl_depth) { - count = min(pbe_count, pbl_depth); - wr->addrs_length = cpu_to_be32(count); - - /* - * If this is the last message, then reference the - * vq request struct cuz we're gonna wait for a reply. - * also make this PBL msg as the last one. - */ - if (count == pbl_depth) { - /* - * reference the request struct. dereferenced in the - * int handler. - */ - vq_req_get(c2dev, vq_req); - wr->flags = cpu_to_be32(MEM_PBL_COMPLETE); - - /* - * This is the last PBL message. - * Set the context to our VQ Request Object so we can - * wait for the reply. - */ - wr->hdr.context = (unsigned long) vq_req; - } - - /* - * If pbl_virt is set then va is a virtual address - * that describes a virtually contiguous memory - * allocation. The wr needs the start of each virtual page - * to be converted to the corresponding physical address - * of the page. If pbl_virt is not set then va is an array - * of physical addresses and there is no conversion to do. - * Just fill in the wr with what is in the array. - */ - for (i = 0; i < count; i++) { - if (pbl_virt) { - va += PAGE_SIZE; - } else { - wr->paddrs[i] = - cpu_to_be64(((u64 *)va)[pbl_index + i]); - } - } - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) wr); - if (err) { - if (count <= pbe_count) { - vq_req_put(c2dev, vq_req); - } - goto bail0; - } - pbl_depth -= count; - pbl_index += count; - } - - /* - * Now wait for the reply... - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail0; - } - - /* - * Process reply - */ - reply = (struct c2wr_nsmr_pbl_rep *) (unsigned long) vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - err = c2_errno(reply); - - vq_repbuf_free(c2dev, reply); -bail0: - kfree(wr); - return err; -} - -#define C2_PBL_MAX_DEPTH 131072 -int -c2_nsmr_register_phys_kern(struct c2_dev *c2dev, u64 *addr_list, - int page_size, int pbl_depth, u32 length, - u32 offset, u64 *va, enum c2_acf acf, - struct c2_mr *mr) -{ - struct c2_vq_req *vq_req; - struct c2wr_nsmr_register_req *wr; - struct c2wr_nsmr_register_rep *reply; - u16 flags; - int i, pbe_count, count; - int err; - - if (!va || !length || !addr_list || !pbl_depth) - return -EINTR; - - /* - * Verify PBL depth is within rnic max - */ - if (pbl_depth > C2_PBL_MAX_DEPTH) { - return -EINTR; - } - - /* - * allocate verbs request object - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - err = -ENOMEM; - goto bail0; - } - - /* - * build the WR - */ - c2_wr_set_id(wr, CCWR_NSMR_REGISTER); - wr->hdr.context = (unsigned long) vq_req; - wr->rnic_handle = c2dev->adapter_handle; - - flags = (acf | MEM_VA_BASED | MEM_REMOTE); - - /* - * compute how many pbes can fit in the message - */ - pbe_count = (c2dev->req_vq.msg_size - - sizeof(struct c2wr_nsmr_register_req)) / sizeof(u64); - - if (pbl_depth <= pbe_count) { - flags |= MEM_PBL_COMPLETE; - } - wr->flags = cpu_to_be16(flags); - wr->stag_key = 0; //stag_key; - wr->va = cpu_to_be64(*va); - wr->pd_id = mr->pd->pd_id; - wr->pbe_size = cpu_to_be32(page_size); - wr->length = cpu_to_be32(length); - wr->pbl_depth = cpu_to_be32(pbl_depth); - wr->fbo = cpu_to_be32(offset); - count = min(pbl_depth, pbe_count); - wr->addrs_length = cpu_to_be32(count); - - /* - * fill out the PBL for this message - */ - for (i = 0; i < count; i++) { - wr->paddrs[i] = cpu_to_be64(addr_list[i]); - } - - /* - * regerence the request struct - */ - vq_req_get(c2dev, vq_req); - - /* - * send the WR to the adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - /* - * wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail1; - } - - /* - * process reply - */ - reply = - (struct c2wr_nsmr_register_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail1; - } - if ((err = c2_errno(reply))) { - goto bail2; - } - //*p_pb_entries = be32_to_cpu(reply->pbl_depth); - mr->ibmr.lkey = mr->ibmr.rkey = be32_to_cpu(reply->stag_index); - vq_repbuf_free(c2dev, reply); - - /* - * if there are still more PBEs we need to send them to - * the adapter and wait for a reply on the final one. - * reuse vq_req for this purpose. - */ - pbl_depth -= count; - if (pbl_depth) { - - vq_req->reply_msg = (unsigned long) NULL; - atomic_set(&vq_req->reply_ready, 0); - err = send_pbl_messages(c2dev, - cpu_to_be32(mr->ibmr.lkey), - (unsigned long) &addr_list[i], - pbl_depth, vq_req, PBL_PHYS); - if (err) { - goto bail1; - } - } - - vq_req_free(c2dev, vq_req); - kfree(wr); - - return err; - -bail2: - vq_repbuf_free(c2dev, reply); -bail1: - kfree(wr); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -int c2_stag_dealloc(struct c2_dev *c2dev, u32 stag_index) -{ - struct c2_vq_req *vq_req; /* verbs request object */ - struct c2wr_stag_dealloc_req wr; /* work request */ - struct c2wr_stag_dealloc_rep *reply; /* WR reply */ - int err; - - - /* - * allocate verbs request object - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - return -ENOMEM; - } - - /* - * Build the WR - */ - c2_wr_set_id(&wr, CCWR_STAG_DEALLOC); - wr.hdr.context = (u64) (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.stag_index = cpu_to_be32(stag_index); - - /* - * reference the request struct. dereferenced in the int handler. - */ - vq_req_get(c2dev, vq_req); - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - /* - * Wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail0; - } - - /* - * Process reply - */ - reply = (struct c2wr_stag_dealloc_rep *) (unsigned long) vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - err = c2_errno(reply); - - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} diff --git a/drivers/staging/rdma/amso1100/c2_mq.c b/drivers/staging/rdma/amso1100/c2_mq.c deleted file mode 100644 index 7827fb8bdb10..000000000000 --- a/drivers/staging/rdma/amso1100/c2_mq.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include "c2.h" -#include "c2_mq.h" - -void *c2_mq_alloc(struct c2_mq *q) -{ - BUG_ON(q->magic != C2_MQ_MAGIC); - BUG_ON(q->type != C2_MQ_ADAPTER_TARGET); - - if (c2_mq_full(q)) { - return NULL; - } else { -#ifdef DEBUG - struct c2wr_hdr *m = - (struct c2wr_hdr *) (q->msg_pool.host + q->priv * q->msg_size); -#ifdef CCMSGMAGIC - BUG_ON(m->magic != be32_to_cpu(~CCWR_MAGIC)); - m->magic = cpu_to_be32(CCWR_MAGIC); -#endif - return m; -#else - return q->msg_pool.host + q->priv * q->msg_size; -#endif - } -} - -void c2_mq_produce(struct c2_mq *q) -{ - BUG_ON(q->magic != C2_MQ_MAGIC); - BUG_ON(q->type != C2_MQ_ADAPTER_TARGET); - - if (!c2_mq_full(q)) { - q->priv = (q->priv + 1) % q->q_size; - q->hint_count++; - /* Update peer's offset. */ - __raw_writew((__force u16) cpu_to_be16(q->priv), &q->peer->shared); - } -} - -void *c2_mq_consume(struct c2_mq *q) -{ - BUG_ON(q->magic != C2_MQ_MAGIC); - BUG_ON(q->type != C2_MQ_HOST_TARGET); - - if (c2_mq_empty(q)) { - return NULL; - } else { -#ifdef DEBUG - struct c2wr_hdr *m = (struct c2wr_hdr *) - (q->msg_pool.host + q->priv * q->msg_size); -#ifdef CCMSGMAGIC - BUG_ON(m->magic != be32_to_cpu(CCWR_MAGIC)); -#endif - return m; -#else - return q->msg_pool.host + q->priv * q->msg_size; -#endif - } -} - -void c2_mq_free(struct c2_mq *q) -{ - BUG_ON(q->magic != C2_MQ_MAGIC); - BUG_ON(q->type != C2_MQ_HOST_TARGET); - - if (!c2_mq_empty(q)) { - -#ifdef CCMSGMAGIC - { - struct c2wr_hdr __iomem *m = (struct c2wr_hdr __iomem *) - (q->msg_pool.adapter + q->priv * q->msg_size); - __raw_writel(cpu_to_be32(~CCWR_MAGIC), &m->magic); - } -#endif - q->priv = (q->priv + 1) % q->q_size; - /* Update peer's offset. */ - __raw_writew((__force u16) cpu_to_be16(q->priv), &q->peer->shared); - } -} - - -void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count) -{ - BUG_ON(q->magic != C2_MQ_MAGIC); - BUG_ON(q->type != C2_MQ_ADAPTER_TARGET); - - while (wqe_count--) { - BUG_ON(c2_mq_empty(q)); - *q->shared = cpu_to_be16((be16_to_cpu(*q->shared)+1) % q->q_size); - } -} - -#if 0 -u32 c2_mq_count(struct c2_mq *q) -{ - s32 count; - - if (q->type == C2_MQ_HOST_TARGET) - count = be16_to_cpu(*q->shared) - q->priv; - else - count = q->priv - be16_to_cpu(*q->shared); - - if (count < 0) - count += q->q_size; - - return (u32) count; -} -#endif /* 0 */ - -void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, - u8 __iomem *pool_start, u16 __iomem *peer, u32 type) -{ - BUG_ON(!q->shared); - - /* This code assumes the byte swapping has already been done! */ - q->index = index; - q->q_size = q_size; - q->msg_size = msg_size; - q->msg_pool.adapter = pool_start; - q->peer = (struct c2_mq_shared __iomem *) peer; - q->magic = C2_MQ_MAGIC; - q->type = type; - q->priv = 0; - q->hint_count = 0; - return; -} - -void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, - u8 *pool_start, u16 __iomem *peer, u32 type) -{ - BUG_ON(!q->shared); - - /* This code assumes the byte swapping has already been done! */ - q->index = index; - q->q_size = q_size; - q->msg_size = msg_size; - q->msg_pool.host = pool_start; - q->peer = (struct c2_mq_shared __iomem *) peer; - q->magic = C2_MQ_MAGIC; - q->type = type; - q->priv = 0; - q->hint_count = 0; - return; -} diff --git a/drivers/staging/rdma/amso1100/c2_mq.h b/drivers/staging/rdma/amso1100/c2_mq.h deleted file mode 100644 index 8e1b4d13409e..000000000000 --- a/drivers/staging/rdma/amso1100/c2_mq.h +++ /dev/null @@ -1,106 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _C2_MQ_H_ -#define _C2_MQ_H_ -#include -#include -#include "c2_wr.h" - -enum c2_shared_regs { - - C2_SHARED_ARMED = 0x10, - C2_SHARED_NOTIFY = 0x18, - C2_SHARED_SHARED = 0x40, -}; - -struct c2_mq_shared { - u16 unused1; - u8 armed; - u8 notification_type; - u32 unused2; - u16 shared; - /* Pad to 64 bytes. */ - u8 pad[64 - sizeof(u16) - 2 * sizeof(u8) - sizeof(u32) - sizeof(u16)]; -}; - -enum c2_mq_type { - C2_MQ_HOST_TARGET = 1, - C2_MQ_ADAPTER_TARGET = 2, -}; - -/* - * c2_mq_t is for kernel-mode MQs like the VQs Cand the AEQ. - * c2_user_mq_t (which is the same format) is for user-mode MQs... - */ -#define C2_MQ_MAGIC 0x4d512020 /* 'MQ ' */ -struct c2_mq { - u32 magic; - union { - u8 *host; - u8 __iomem *adapter; - } msg_pool; - dma_addr_t host_dma; - DEFINE_DMA_UNMAP_ADDR(mapping); - u16 hint_count; - u16 priv; - struct c2_mq_shared __iomem *peer; - __be16 *shared; - dma_addr_t shared_dma; - u32 q_size; - u32 msg_size; - u32 index; - enum c2_mq_type type; -}; - -static __inline__ int c2_mq_empty(struct c2_mq *q) -{ - return q->priv == be16_to_cpu(*q->shared); -} - -static __inline__ int c2_mq_full(struct c2_mq *q) -{ - return q->priv == (be16_to_cpu(*q->shared) + q->q_size - 1) % q->q_size; -} - -void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count); -void *c2_mq_alloc(struct c2_mq *q); -void c2_mq_produce(struct c2_mq *q); -void *c2_mq_consume(struct c2_mq *q); -void c2_mq_free(struct c2_mq *q); -void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, - u8 __iomem *pool_start, u16 __iomem *peer, u32 type); -void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, - u8 *pool_start, u16 __iomem *peer, u32 type); - -#endif /* _C2_MQ_H_ */ diff --git a/drivers/staging/rdma/amso1100/c2_pd.c b/drivers/staging/rdma/amso1100/c2_pd.c deleted file mode 100644 index f3e81dc357bb..000000000000 --- a/drivers/staging/rdma/amso1100/c2_pd.c +++ /dev/null @@ -1,90 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Cisco Systems. All rights reserved. - * Copyright (c) 2005 Mellanox Technologies. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "c2.h" -#include "c2_provider.h" - -int c2_pd_alloc(struct c2_dev *c2dev, int privileged, struct c2_pd *pd) -{ - u32 obj; - int ret = 0; - - spin_lock(&c2dev->pd_table.lock); - obj = find_next_zero_bit(c2dev->pd_table.table, c2dev->pd_table.max, - c2dev->pd_table.last); - if (obj >= c2dev->pd_table.max) - obj = find_first_zero_bit(c2dev->pd_table.table, - c2dev->pd_table.max); - if (obj < c2dev->pd_table.max) { - pd->pd_id = obj; - __set_bit(obj, c2dev->pd_table.table); - c2dev->pd_table.last = obj+1; - if (c2dev->pd_table.last >= c2dev->pd_table.max) - c2dev->pd_table.last = 0; - } else - ret = -ENOMEM; - spin_unlock(&c2dev->pd_table.lock); - return ret; -} - -void c2_pd_free(struct c2_dev *c2dev, struct c2_pd *pd) -{ - spin_lock(&c2dev->pd_table.lock); - __clear_bit(pd->pd_id, c2dev->pd_table.table); - spin_unlock(&c2dev->pd_table.lock); -} - -int c2_init_pd_table(struct c2_dev *c2dev) -{ - - c2dev->pd_table.last = 0; - c2dev->pd_table.max = c2dev->props.max_pd; - spin_lock_init(&c2dev->pd_table.lock); - c2dev->pd_table.table = kmalloc(BITS_TO_LONGS(c2dev->props.max_pd) * - sizeof(long), GFP_KERNEL); - if (!c2dev->pd_table.table) - return -ENOMEM; - bitmap_zero(c2dev->pd_table.table, c2dev->props.max_pd); - return 0; -} - -void c2_cleanup_pd_table(struct c2_dev *c2dev) -{ - kfree(c2dev->pd_table.table); -} diff --git a/drivers/staging/rdma/amso1100/c2_provider.c b/drivers/staging/rdma/amso1100/c2_provider.c deleted file mode 100644 index de8d10e1bde3..000000000000 --- a/drivers/staging/rdma/amso1100/c2_provider.c +++ /dev/null @@ -1,862 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include -#include -#include "c2.h" -#include "c2_provider.h" -#include "c2_user.h" - -static int c2_query_device(struct ib_device *ibdev, struct ib_device_attr *props, - struct ib_udata *uhw) -{ - struct c2_dev *c2dev = to_c2dev(ibdev); - - pr_debug("%s:%u\n", __func__, __LINE__); - - if (uhw->inlen || uhw->outlen) - return -EINVAL; - - *props = c2dev->props; - return 0; -} - -static int c2_query_port(struct ib_device *ibdev, - u8 port, struct ib_port_attr *props) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - - props->max_mtu = IB_MTU_4096; - props->lid = 0; - props->lmc = 0; - props->sm_lid = 0; - props->sm_sl = 0; - props->state = IB_PORT_ACTIVE; - props->phys_state = 0; - props->port_cap_flags = - IB_PORT_CM_SUP | - IB_PORT_REINIT_SUP | - IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; - props->gid_tbl_len = 1; - props->pkey_tbl_len = 1; - props->qkey_viol_cntr = 0; - props->active_width = 1; - props->active_speed = IB_SPEED_SDR; - - return 0; -} - -static int c2_query_pkey(struct ib_device *ibdev, - u8 port, u16 index, u16 * pkey) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - *pkey = 0; - return 0; -} - -static int c2_query_gid(struct ib_device *ibdev, u8 port, - int index, union ib_gid *gid) -{ - struct c2_dev *c2dev = to_c2dev(ibdev); - - pr_debug("%s:%u\n", __func__, __LINE__); - memset(&(gid->raw[0]), 0, sizeof(gid->raw)); - memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6); - - return 0; -} - -/* Allocate the user context data structure. This keeps track - * of all objects associated with a particular user-mode client. - */ -static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev, - struct ib_udata *udata) -{ - struct c2_ucontext *context; - - pr_debug("%s:%u\n", __func__, __LINE__); - context = kmalloc(sizeof(*context), GFP_KERNEL); - if (!context) - return ERR_PTR(-ENOMEM); - - return &context->ibucontext; -} - -static int c2_dealloc_ucontext(struct ib_ucontext *context) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - kfree(context); - return 0; -} - -static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return -ENOSYS; -} - -static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev, - struct ib_ucontext *context, - struct ib_udata *udata) -{ - struct c2_pd *pd; - int err; - - pr_debug("%s:%u\n", __func__, __LINE__); - - pd = kmalloc(sizeof(*pd), GFP_KERNEL); - if (!pd) - return ERR_PTR(-ENOMEM); - - err = c2_pd_alloc(to_c2dev(ibdev), !context, pd); - if (err) { - kfree(pd); - return ERR_PTR(err); - } - - if (context) { - if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) { - c2_pd_free(to_c2dev(ibdev), pd); - kfree(pd); - return ERR_PTR(-EFAULT); - } - } - - return &pd->ibpd; -} - -static int c2_dealloc_pd(struct ib_pd *pd) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - c2_pd_free(to_c2dev(pd->device), to_c2pd(pd)); - kfree(pd); - - return 0; -} - -static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return ERR_PTR(-ENOSYS); -} - -static int c2_ah_destroy(struct ib_ah *ah) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return -ENOSYS; -} - -static void c2_add_ref(struct ib_qp *ibqp) -{ - struct c2_qp *qp; - BUG_ON(!ibqp); - qp = to_c2qp(ibqp); - atomic_inc(&qp->refcount); -} - -static void c2_rem_ref(struct ib_qp *ibqp) -{ - struct c2_qp *qp; - BUG_ON(!ibqp); - qp = to_c2qp(ibqp); - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); -} - -struct ib_qp *c2_get_qp(struct ib_device *device, int qpn) -{ - struct c2_dev* c2dev = to_c2dev(device); - struct c2_qp *qp; - - qp = c2_find_qpn(c2dev, qpn); - pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n", - __func__, qp, qpn, device, - (qp?atomic_read(&qp->refcount):0)); - - return (qp?&qp->ibqp:NULL); -} - -static struct ib_qp *c2_create_qp(struct ib_pd *pd, - struct ib_qp_init_attr *init_attr, - struct ib_udata *udata) -{ - struct c2_qp *qp; - int err; - - pr_debug("%s:%u\n", __func__, __LINE__); - - if (init_attr->create_flags) - return ERR_PTR(-EINVAL); - - switch (init_attr->qp_type) { - case IB_QPT_RC: - qp = kzalloc(sizeof(*qp), GFP_KERNEL); - if (!qp) { - pr_debug("%s: Unable to allocate QP\n", __func__); - return ERR_PTR(-ENOMEM); - } - spin_lock_init(&qp->lock); - if (pd->uobject) { - /* userspace specific */ - } - - err = c2_alloc_qp(to_c2dev(pd->device), - to_c2pd(pd), init_attr, qp); - - if (err && pd->uobject) { - /* userspace specific */ - } - - break; - default: - pr_debug("%s: Invalid QP type: %d\n", __func__, - init_attr->qp_type); - return ERR_PTR(-EINVAL); - } - - if (err) { - kfree(qp); - return ERR_PTR(err); - } - - return &qp->ibqp; -} - -static int c2_destroy_qp(struct ib_qp *ib_qp) -{ - struct c2_qp *qp = to_c2qp(ib_qp); - - pr_debug("%s:%u qp=%p,qp->state=%d\n", - __func__, __LINE__, ib_qp, qp->state); - c2_free_qp(to_c2dev(ib_qp->device), qp); - kfree(qp); - return 0; -} - -static struct ib_cq *c2_create_cq(struct ib_device *ibdev, - const struct ib_cq_init_attr *attr, - struct ib_ucontext *context, - struct ib_udata *udata) -{ - int entries = attr->cqe; - struct c2_cq *cq; - int err; - - if (attr->flags) - return ERR_PTR(-EINVAL); - - cq = kmalloc(sizeof(*cq), GFP_KERNEL); - if (!cq) { - pr_debug("%s: Unable to allocate CQ\n", __func__); - return ERR_PTR(-ENOMEM); - } - - err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq); - if (err) { - pr_debug("%s: error initializing CQ\n", __func__); - kfree(cq); - return ERR_PTR(err); - } - - return &cq->ibcq; -} - -static int c2_destroy_cq(struct ib_cq *ib_cq) -{ - struct c2_cq *cq = to_c2cq(ib_cq); - - pr_debug("%s:%u\n", __func__, __LINE__); - - c2_free_cq(to_c2dev(ib_cq->device), cq); - kfree(cq); - - return 0; -} - -static inline u32 c2_convert_access(int acc) -{ - return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) | - (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) | - (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) | - C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND; -} - -static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc) -{ - struct c2_mr *mr; - u64 *page_list; - const u32 total_len = 0xffffffff; /* AMSO1100 limit */ - int err, page_shift, pbl_depth, i; - u64 kva = 0; - - pr_debug("%s:%u\n", __func__, __LINE__); - - /* - * This is a map of all phy mem...use a 32k page_shift. - */ - page_shift = PAGE_SHIFT + 3; - pbl_depth = ALIGN(total_len, BIT(page_shift)) >> page_shift; - - page_list = vmalloc(sizeof(u64) * pbl_depth); - if (!page_list) { - pr_debug("couldn't vmalloc page_list of size %zd\n", - (sizeof(u64) * pbl_depth)); - return ERR_PTR(-ENOMEM); - } - - for (i = 0; i < pbl_depth; i++) - page_list[i] = (i << page_shift); - - mr = kmalloc(sizeof(*mr), GFP_KERNEL); - if (!mr) { - vfree(page_list); - return ERR_PTR(-ENOMEM); - } - - mr->pd = to_c2pd(pd); - mr->umem = NULL; - pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, " - "*iova_start %llx, first pa %llx, last pa %llx\n", - __func__, page_shift, pbl_depth, total_len, - (unsigned long long) kva, - (unsigned long long) page_list[0], - (unsigned long long) page_list[pbl_depth-1]); - err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), page_list, - BIT(page_shift), pbl_depth, - total_len, 0, &kva, - c2_convert_access(acc), mr); - vfree(page_list); - if (err) { - kfree(mr); - return ERR_PTR(err); - } - - return &mr->ibmr; -} - -static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, - u64 virt, int acc, struct ib_udata *udata) -{ - u64 *pages; - u64 kva = 0; - int shift, n, len; - int i, k, entry; - int err = 0; - struct scatterlist *sg; - struct c2_pd *c2pd = to_c2pd(pd); - struct c2_mr *c2mr; - - pr_debug("%s:%u\n", __func__, __LINE__); - - c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL); - if (!c2mr) - return ERR_PTR(-ENOMEM); - c2mr->pd = c2pd; - - c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); - if (IS_ERR(c2mr->umem)) { - err = PTR_ERR(c2mr->umem); - kfree(c2mr); - return ERR_PTR(err); - } - - shift = ffs(c2mr->umem->page_size) - 1; - n = c2mr->umem->nmap; - - pages = kmalloc_array(n, sizeof(u64), GFP_KERNEL); - if (!pages) { - err = -ENOMEM; - goto err; - } - - i = 0; - for_each_sg(c2mr->umem->sg_head.sgl, sg, c2mr->umem->nmap, entry) { - len = sg_dma_len(sg) >> shift; - for (k = 0; k < len; ++k) { - pages[i++] = - sg_dma_address(sg) + - (c2mr->umem->page_size * k); - } - } - - kva = virt; - err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), - pages, - c2mr->umem->page_size, - i, - length, - ib_umem_offset(c2mr->umem), - &kva, - c2_convert_access(acc), - c2mr); - kfree(pages); - if (err) - goto err; - return &c2mr->ibmr; - -err: - ib_umem_release(c2mr->umem); - kfree(c2mr); - return ERR_PTR(err); -} - -static int c2_dereg_mr(struct ib_mr *ib_mr) -{ - struct c2_mr *mr = to_c2mr(ib_mr); - int err; - - pr_debug("%s:%u\n", __func__, __LINE__); - - err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey); - if (err) - pr_debug("c2_stag_dealloc failed: %d\n", err); - else { - if (mr->umem) - ib_umem_release(mr->umem); - kfree(mr); - } - - return err; -} - -static ssize_t show_rev(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); - pr_debug("%s:%u\n", __func__, __LINE__); - return sprintf(buf, "%x\n", c2dev->props.hw_ver); -} - -static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); - pr_debug("%s:%u\n", __func__, __LINE__); - return sprintf(buf, "%x.%x.%x\n", - (int) (c2dev->props.fw_ver >> 32), - (int) (c2dev->props.fw_ver >> 16) & 0xffff, - (int) (c2dev->props.fw_ver & 0xffff)); -} - -static ssize_t show_hca(struct device *dev, struct device_attribute *attr, - char *buf) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return sprintf(buf, "AMSO1100\n"); -} - -static ssize_t show_board(struct device *dev, struct device_attribute *attr, - char *buf) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID"); -} - -static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); -static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); -static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); -static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); - -static struct device_attribute *c2_dev_attributes[] = { - &dev_attr_hw_rev, - &dev_attr_fw_ver, - &dev_attr_hca_type, - &dev_attr_board_id -}; - -static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask, struct ib_udata *udata) -{ - int err; - - err = - c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr, - attr_mask); - - return err; -} - -static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return -ENOSYS; -} - -static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return -ENOSYS; -} - -static int c2_process_mad(struct ib_device *ibdev, - int mad_flags, - u8 port_num, - const struct ib_wc *in_wc, - const struct ib_grh *in_grh, - const struct ib_mad_hdr *in_mad, - size_t in_mad_size, - struct ib_mad_hdr *out_mad, - size_t *out_mad_size, - u16 *out_mad_pkey_index) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - return -ENOSYS; -} - -static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - - /* Request a connection */ - return c2_llp_connect(cm_id, iw_param); -} - -static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - - /* Accept the new connection */ - return c2_llp_accept(cm_id, iw_param); -} - -static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - - return c2_llp_reject(cm_id, pdata, pdata_len); -} - -static int c2_service_create(struct iw_cm_id *cm_id, int backlog) -{ - int err; - - pr_debug("%s:%u\n", __func__, __LINE__); - err = c2_llp_service_create(cm_id, backlog); - pr_debug("%s:%u err=%d\n", - __func__, __LINE__, - err); - return err; -} - -static int c2_service_destroy(struct iw_cm_id *cm_id) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - - return c2_llp_service_destroy(cm_id); -} - -static int c2_pseudo_up(struct net_device *netdev) -{ - struct in_device *ind; - struct c2_dev *c2dev = netdev->ml_priv; - - ind = in_dev_get(netdev); - if (!ind) - return 0; - - pr_debug("adding...\n"); - for_ifa(ind) { -#ifdef DEBUG - u8 *ip = (u8 *) & ifa->ifa_address; - - pr_debug("%s: %d.%d.%d.%d\n", - ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); -#endif - c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); - } - endfor_ifa(ind); - in_dev_put(ind); - - return 0; -} - -static int c2_pseudo_down(struct net_device *netdev) -{ - struct in_device *ind; - struct c2_dev *c2dev = netdev->ml_priv; - - ind = in_dev_get(netdev); - if (!ind) - return 0; - - pr_debug("deleting...\n"); - for_ifa(ind) { -#ifdef DEBUG - u8 *ip = (u8 *) & ifa->ifa_address; - - pr_debug("%s: %d.%d.%d.%d\n", - ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); -#endif - c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); - } - endfor_ifa(ind); - in_dev_put(ind); - - return 0; -} - -static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - kfree_skb(skb); - return NETDEV_TX_OK; -} - -static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu) -{ - if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) - return -EINVAL; - - netdev->mtu = new_mtu; - - /* TODO: Tell rnic about new rmda interface mtu */ - return 0; -} - -static const struct net_device_ops c2_pseudo_netdev_ops = { - .ndo_open = c2_pseudo_up, - .ndo_stop = c2_pseudo_down, - .ndo_start_xmit = c2_pseudo_xmit_frame, - .ndo_change_mtu = c2_pseudo_change_mtu, - .ndo_validate_addr = eth_validate_addr, -}; - -static void setup(struct net_device *netdev) -{ - netdev->netdev_ops = &c2_pseudo_netdev_ops; - - netdev->watchdog_timeo = 0; - netdev->type = ARPHRD_ETHER; - netdev->mtu = 1500; - netdev->hard_header_len = ETH_HLEN; - netdev->addr_len = ETH_ALEN; - netdev->tx_queue_len = 0; - netdev->flags |= IFF_NOARP; -} - -static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev) -{ - char name[IFNAMSIZ]; - struct net_device *netdev; - - /* change ethxxx to iwxxx */ - strcpy(name, "iw"); - strcat(name, &c2dev->netdev->name[3]); - netdev = alloc_netdev(0, name, NET_NAME_UNKNOWN, setup); - if (!netdev) { - printk(KERN_ERR PFX "%s - etherdev alloc failed", - __func__); - return NULL; - } - - netdev->ml_priv = c2dev; - - SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); - - memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6); - - /* Print out the MAC address */ - pr_debug("%s: MAC %pM\n", netdev->name, netdev->dev_addr); - -#if 0 - /* Disable network packets */ - netif_stop_queue(netdev); -#endif - return netdev; -} - -static int c2_port_immutable(struct ib_device *ibdev, u8 port_num, - struct ib_port_immutable *immutable) -{ - struct ib_port_attr attr; - int err; - - err = c2_query_port(ibdev, port_num, &attr); - if (err) - return err; - - immutable->pkey_tbl_len = attr.pkey_tbl_len; - immutable->gid_tbl_len = attr.gid_tbl_len; - immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; - - return 0; -} - -int c2_register_device(struct c2_dev *dev) -{ - int ret = -ENOMEM; - int i; - - /* Register pseudo network device */ - dev->pseudo_netdev = c2_pseudo_netdev_init(dev); - if (!dev->pseudo_netdev) - goto out; - - ret = register_netdev(dev->pseudo_netdev); - if (ret) - goto out_free_netdev; - - pr_debug("%s:%u\n", __func__, __LINE__); - strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX); - dev->ibdev.owner = THIS_MODULE; - dev->ibdev.uverbs_cmd_mask = - (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | - (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | - (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | - (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_REG_MR) | - (1ull << IB_USER_VERBS_CMD_DEREG_MR) | - (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | - (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | - (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | - (1ull << IB_USER_VERBS_CMD_CREATE_QP) | - (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | - (1ull << IB_USER_VERBS_CMD_POLL_CQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | - (1ull << IB_USER_VERBS_CMD_POST_SEND) | - (1ull << IB_USER_VERBS_CMD_POST_RECV); - - dev->ibdev.node_type = RDMA_NODE_RNIC; - memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); - memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6); - dev->ibdev.phys_port_cnt = 1; - dev->ibdev.num_comp_vectors = 1; - dev->ibdev.dma_device = &dev->pcidev->dev; - dev->ibdev.query_device = c2_query_device; - dev->ibdev.query_port = c2_query_port; - dev->ibdev.query_pkey = c2_query_pkey; - dev->ibdev.query_gid = c2_query_gid; - dev->ibdev.alloc_ucontext = c2_alloc_ucontext; - dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext; - dev->ibdev.mmap = c2_mmap_uar; - dev->ibdev.alloc_pd = c2_alloc_pd; - dev->ibdev.dealloc_pd = c2_dealloc_pd; - dev->ibdev.create_ah = c2_ah_create; - dev->ibdev.destroy_ah = c2_ah_destroy; - dev->ibdev.create_qp = c2_create_qp; - dev->ibdev.modify_qp = c2_modify_qp; - dev->ibdev.destroy_qp = c2_destroy_qp; - dev->ibdev.create_cq = c2_create_cq; - dev->ibdev.destroy_cq = c2_destroy_cq; - dev->ibdev.poll_cq = c2_poll_cq; - dev->ibdev.get_dma_mr = c2_get_dma_mr; - dev->ibdev.reg_user_mr = c2_reg_user_mr; - dev->ibdev.dereg_mr = c2_dereg_mr; - dev->ibdev.get_port_immutable = c2_port_immutable; - - dev->ibdev.alloc_fmr = NULL; - dev->ibdev.unmap_fmr = NULL; - dev->ibdev.dealloc_fmr = NULL; - dev->ibdev.map_phys_fmr = NULL; - - dev->ibdev.attach_mcast = c2_multicast_attach; - dev->ibdev.detach_mcast = c2_multicast_detach; - dev->ibdev.process_mad = c2_process_mad; - - dev->ibdev.req_notify_cq = c2_arm_cq; - dev->ibdev.post_send = c2_post_send; - dev->ibdev.post_recv = c2_post_receive; - - dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL); - if (dev->ibdev.iwcm == NULL) { - ret = -ENOMEM; - goto out_unregister_netdev; - } - dev->ibdev.iwcm->add_ref = c2_add_ref; - dev->ibdev.iwcm->rem_ref = c2_rem_ref; - dev->ibdev.iwcm->get_qp = c2_get_qp; - dev->ibdev.iwcm->connect = c2_connect; - dev->ibdev.iwcm->accept = c2_accept; - dev->ibdev.iwcm->reject = c2_reject; - dev->ibdev.iwcm->create_listen = c2_service_create; - dev->ibdev.iwcm->destroy_listen = c2_service_destroy; - - ret = ib_register_device(&dev->ibdev, NULL); - if (ret) - goto out_free_iwcm; - - for (i = 0; i < ARRAY_SIZE(c2_dev_attributes); ++i) { - ret = device_create_file(&dev->ibdev.dev, - c2_dev_attributes[i]); - if (ret) - goto out_unregister_ibdev; - } - goto out; - -out_unregister_ibdev: - ib_unregister_device(&dev->ibdev); -out_free_iwcm: - kfree(dev->ibdev.iwcm); -out_unregister_netdev: - unregister_netdev(dev->pseudo_netdev); -out_free_netdev: - free_netdev(dev->pseudo_netdev); -out: - pr_debug("%s:%u ret=%d\n", __func__, __LINE__, ret); - return ret; -} - -void c2_unregister_device(struct c2_dev *dev) -{ - pr_debug("%s:%u\n", __func__, __LINE__); - unregister_netdev(dev->pseudo_netdev); - free_netdev(dev->pseudo_netdev); - ib_unregister_device(&dev->ibdev); -} diff --git a/drivers/staging/rdma/amso1100/c2_provider.h b/drivers/staging/rdma/amso1100/c2_provider.h deleted file mode 100644 index bf189987711f..000000000000 --- a/drivers/staging/rdma/amso1100/c2_provider.h +++ /dev/null @@ -1,182 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef C2_PROVIDER_H -#define C2_PROVIDER_H -#include - -#include -#include - -#include "c2_mq.h" -#include - -#define C2_MPT_FLAG_ATOMIC (1 << 14) -#define C2_MPT_FLAG_REMOTE_WRITE (1 << 13) -#define C2_MPT_FLAG_REMOTE_READ (1 << 12) -#define C2_MPT_FLAG_LOCAL_WRITE (1 << 11) -#define C2_MPT_FLAG_LOCAL_READ (1 << 10) - -struct c2_buf_list { - void *buf; - DEFINE_DMA_UNMAP_ADDR(mapping); -}; - - -/* The user context keeps track of objects allocated for a - * particular user-mode client. */ -struct c2_ucontext { - struct ib_ucontext ibucontext; -}; - -struct c2_mtt; - -/* All objects associated with a PD are kept in the - * associated user context if present. - */ -struct c2_pd { - struct ib_pd ibpd; - u32 pd_id; -}; - -struct c2_mr { - struct ib_mr ibmr; - struct c2_pd *pd; - struct ib_umem *umem; -}; - -struct c2_av; - -enum c2_ah_type { - C2_AH_ON_HCA, - C2_AH_PCI_POOL, - C2_AH_KMALLOC -}; - -struct c2_ah { - struct ib_ah ibah; -}; - -struct c2_cq { - struct ib_cq ibcq; - spinlock_t lock; - atomic_t refcount; - int cqn; - int is_kernel; - wait_queue_head_t wait; - - u32 adapter_handle; - struct c2_mq mq; -}; - -struct c2_wq { - spinlock_t lock; -}; -struct iw_cm_id; -struct c2_qp { - struct ib_qp ibqp; - struct iw_cm_id *cm_id; - spinlock_t lock; - atomic_t refcount; - wait_queue_head_t wait; - int qpn; - - u32 adapter_handle; - u32 send_sgl_depth; - u32 recv_sgl_depth; - u32 rdma_write_sgl_depth; - u8 state; - - struct c2_mq sq_mq; - struct c2_mq rq_mq; -}; - -struct c2_cr_query_attrs { - u32 local_addr; - u32 remote_addr; - u16 local_port; - u16 remote_port; -}; - -static inline struct c2_pd *to_c2pd(struct ib_pd *ibpd) -{ - return container_of(ibpd, struct c2_pd, ibpd); -} - -static inline struct c2_ucontext *to_c2ucontext(struct ib_ucontext *ibucontext) -{ - return container_of(ibucontext, struct c2_ucontext, ibucontext); -} - -static inline struct c2_mr *to_c2mr(struct ib_mr *ibmr) -{ - return container_of(ibmr, struct c2_mr, ibmr); -} - - -static inline struct c2_ah *to_c2ah(struct ib_ah *ibah) -{ - return container_of(ibah, struct c2_ah, ibah); -} - -static inline struct c2_cq *to_c2cq(struct ib_cq *ibcq) -{ - return container_of(ibcq, struct c2_cq, ibcq); -} - -static inline struct c2_qp *to_c2qp(struct ib_qp *ibqp) -{ - return container_of(ibqp, struct c2_qp, ibqp); -} - -static inline int is_rnic_addr(struct net_device *netdev, u32 addr) -{ - struct in_device *ind; - int ret = 0; - - ind = in_dev_get(netdev); - if (!ind) - return 0; - - for_ifa(ind) { - if (ifa->ifa_address == addr) { - ret = 1; - break; - } - } - endfor_ifa(ind); - in_dev_put(ind); - return ret; -} -#endif /* C2_PROVIDER_H */ diff --git a/drivers/staging/rdma/amso1100/c2_qp.c b/drivers/staging/rdma/amso1100/c2_qp.c deleted file mode 100644 index ca364dbe369c..000000000000 --- a/drivers/staging/rdma/amso1100/c2_qp.c +++ /dev/null @@ -1,1024 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Cisco Systems. All rights reserved. - * Copyright (c) 2005 Mellanox Technologies. All rights reserved. - * Copyright (c) 2004 Voltaire, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include - -#include "c2.h" -#include "c2_vq.h" -#include "c2_status.h" - -#define C2_MAX_ORD_PER_QP 128 -#define C2_MAX_IRD_PER_QP 128 - -#define C2_HINT_MAKE(q_index, hint_count) (((q_index) << 16) | hint_count) -#define C2_HINT_GET_INDEX(hint) (((hint) & 0x7FFF0000) >> 16) -#define C2_HINT_GET_COUNT(hint) ((hint) & 0x0000FFFF) - -#define NO_SUPPORT -1 -static const u8 c2_opcode[] = { - [IB_WR_SEND] = C2_WR_TYPE_SEND, - [IB_WR_SEND_WITH_IMM] = NO_SUPPORT, - [IB_WR_RDMA_WRITE] = C2_WR_TYPE_RDMA_WRITE, - [IB_WR_RDMA_WRITE_WITH_IMM] = NO_SUPPORT, - [IB_WR_RDMA_READ] = C2_WR_TYPE_RDMA_READ, - [IB_WR_ATOMIC_CMP_AND_SWP] = NO_SUPPORT, - [IB_WR_ATOMIC_FETCH_AND_ADD] = NO_SUPPORT, -}; - -static int to_c2_state(enum ib_qp_state ib_state) -{ - switch (ib_state) { - case IB_QPS_RESET: - return C2_QP_STATE_IDLE; - case IB_QPS_RTS: - return C2_QP_STATE_RTS; - case IB_QPS_SQD: - return C2_QP_STATE_CLOSING; - case IB_QPS_SQE: - return C2_QP_STATE_CLOSING; - case IB_QPS_ERR: - return C2_QP_STATE_ERROR; - default: - return -1; - } -} - -static int to_ib_state(enum c2_qp_state c2_state) -{ - switch (c2_state) { - case C2_QP_STATE_IDLE: - return IB_QPS_RESET; - case C2_QP_STATE_CONNECTING: - return IB_QPS_RTR; - case C2_QP_STATE_RTS: - return IB_QPS_RTS; - case C2_QP_STATE_CLOSING: - return IB_QPS_SQD; - case C2_QP_STATE_ERROR: - return IB_QPS_ERR; - case C2_QP_STATE_TERMINATE: - return IB_QPS_SQE; - default: - return -1; - } -} - -static const char *to_ib_state_str(int ib_state) -{ - static const char *state_str[] = { - "IB_QPS_RESET", - "IB_QPS_INIT", - "IB_QPS_RTR", - "IB_QPS_RTS", - "IB_QPS_SQD", - "IB_QPS_SQE", - "IB_QPS_ERR" - }; - if (ib_state < IB_QPS_RESET || - ib_state > IB_QPS_ERR) - return ""; - - ib_state -= IB_QPS_RESET; - return state_str[ib_state]; -} - -void c2_set_qp_state(struct c2_qp *qp, int c2_state) -{ - int new_state = to_ib_state(c2_state); - - pr_debug("%s: qp[%p] state modify %s --> %s\n", - __func__, - qp, - to_ib_state_str(qp->state), - to_ib_state_str(new_state)); - qp->state = new_state; -} - -#define C2_QP_NO_ATTR_CHANGE 0xFFFFFFFF - -int c2_qp_modify(struct c2_dev *c2dev, struct c2_qp *qp, - struct ib_qp_attr *attr, int attr_mask) -{ - struct c2wr_qp_modify_req wr; - struct c2wr_qp_modify_rep *reply; - struct c2_vq_req *vq_req; - unsigned long flags; - u8 next_state; - int err; - - pr_debug("%s:%d qp=%p, %s --> %s\n", - __func__, __LINE__, - qp, - to_ib_state_str(qp->state), - to_ib_state_str(attr->qp_state)); - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - c2_wr_set_id(&wr, CCWR_QP_MODIFY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.qp_handle = qp->adapter_handle; - wr.ord = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - wr.ird = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - wr.sq_depth = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - wr.rq_depth = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - - if (attr_mask & IB_QP_STATE) { - /* Ensure the state is valid */ - if (attr->qp_state < 0 || attr->qp_state > IB_QPS_ERR) { - err = -EINVAL; - goto bail0; - } - - wr.next_qp_state = cpu_to_be32(to_c2_state(attr->qp_state)); - - if (attr->qp_state == IB_QPS_ERR) { - spin_lock_irqsave(&qp->lock, flags); - if (qp->cm_id && qp->state == IB_QPS_RTS) { - pr_debug("Generating CLOSE event for QP-->ERR, " - "qp=%p, cm_id=%p\n",qp,qp->cm_id); - /* Generate an CLOSE event */ - vq_req->cm_id = qp->cm_id; - vq_req->event = IW_CM_EVENT_CLOSE; - } - spin_unlock_irqrestore(&qp->lock, flags); - } - next_state = attr->qp_state; - - } else if (attr_mask & IB_QP_CUR_STATE) { - - if (attr->cur_qp_state != IB_QPS_RTR && - attr->cur_qp_state != IB_QPS_RTS && - attr->cur_qp_state != IB_QPS_SQD && - attr->cur_qp_state != IB_QPS_SQE) { - err = -EINVAL; - goto bail0; - } else - wr.next_qp_state = - cpu_to_be32(to_c2_state(attr->cur_qp_state)); - - next_state = attr->cur_qp_state; - - } else { - err = 0; - goto bail0; - } - - /* reference the request struct */ - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail0; - - reply = (struct c2wr_qp_modify_rep *) (unsigned long) vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - err = c2_errno(reply); - if (!err) - qp->state = next_state; -#ifdef DEBUG - else - pr_debug("%s: c2_errno=%d\n", __func__, err); -#endif - /* - * If we're going to error and generating the event here, then - * we need to remove the reference because there will be no - * close event generated by the adapter - */ - spin_lock_irqsave(&qp->lock, flags); - if (vq_req->event==IW_CM_EVENT_CLOSE && qp->cm_id) { - qp->cm_id->rem_ref(qp->cm_id); - qp->cm_id = NULL; - } - spin_unlock_irqrestore(&qp->lock, flags); - - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - - pr_debug("%s:%d qp=%p, cur_state=%s\n", - __func__, __LINE__, - qp, - to_ib_state_str(qp->state)); - return err; -} - -int c2_qp_set_read_limits(struct c2_dev *c2dev, struct c2_qp *qp, - int ord, int ird) -{ - struct c2wr_qp_modify_req wr; - struct c2wr_qp_modify_rep *reply; - struct c2_vq_req *vq_req; - int err; - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - c2_wr_set_id(&wr, CCWR_QP_MODIFY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.qp_handle = qp->adapter_handle; - wr.ord = cpu_to_be32(ord); - wr.ird = cpu_to_be32(ird); - wr.sq_depth = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - wr.rq_depth = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - wr.next_qp_state = cpu_to_be32(C2_QP_NO_ATTR_CHANGE); - - /* reference the request struct */ - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail0; - - reply = (struct c2wr_qp_modify_rep *) (unsigned long) - vq_req->reply_msg; - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - err = c2_errno(reply); - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -static int destroy_qp(struct c2_dev *c2dev, struct c2_qp *qp) -{ - struct c2_vq_req *vq_req; - struct c2wr_qp_destroy_req wr; - struct c2wr_qp_destroy_rep *reply; - unsigned long flags; - int err; - - /* - * Allocate a verb request message - */ - vq_req = vq_req_alloc(c2dev); - if (!vq_req) { - return -ENOMEM; - } - - /* - * Initialize the WR - */ - c2_wr_set_id(&wr, CCWR_QP_DESTROY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.qp_handle = qp->adapter_handle; - - /* - * reference the request struct. dereferenced in the int handler. - */ - vq_req_get(c2dev, vq_req); - - spin_lock_irqsave(&qp->lock, flags); - if (qp->cm_id && qp->state == IB_QPS_RTS) { - pr_debug("destroy_qp: generating CLOSE event for QP-->ERR, " - "qp=%p, cm_id=%p\n",qp,qp->cm_id); - /* Generate an CLOSE event */ - vq_req->qp = qp; - vq_req->cm_id = qp->cm_id; - vq_req->event = IW_CM_EVENT_CLOSE; - } - spin_unlock_irqrestore(&qp->lock, flags); - - /* - * Send WR to adapter - */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - /* - * Wait for reply from adapter - */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail0; - } - - /* - * Process reply - */ - reply = (struct c2wr_qp_destroy_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - spin_lock_irqsave(&qp->lock, flags); - if (qp->cm_id) { - qp->cm_id->rem_ref(qp->cm_id); - qp->cm_id = NULL; - } - spin_unlock_irqrestore(&qp->lock, flags); - - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -static int c2_alloc_qpn(struct c2_dev *c2dev, struct c2_qp *qp) -{ - int ret; - - idr_preload(GFP_KERNEL); - spin_lock_irq(&c2dev->qp_table.lock); - - ret = idr_alloc_cyclic(&c2dev->qp_table.idr, qp, 0, 0, GFP_NOWAIT); - if (ret >= 0) - qp->qpn = ret; - - spin_unlock_irq(&c2dev->qp_table.lock); - idr_preload_end(); - return ret < 0 ? ret : 0; -} - -static void c2_free_qpn(struct c2_dev *c2dev, int qpn) -{ - spin_lock_irq(&c2dev->qp_table.lock); - idr_remove(&c2dev->qp_table.idr, qpn); - spin_unlock_irq(&c2dev->qp_table.lock); -} - -struct c2_qp *c2_find_qpn(struct c2_dev *c2dev, int qpn) -{ - unsigned long flags; - struct c2_qp *qp; - - spin_lock_irqsave(&c2dev->qp_table.lock, flags); - qp = idr_find(&c2dev->qp_table.idr, qpn); - spin_unlock_irqrestore(&c2dev->qp_table.lock, flags); - return qp; -} - -int c2_alloc_qp(struct c2_dev *c2dev, - struct c2_pd *pd, - struct ib_qp_init_attr *qp_attrs, struct c2_qp *qp) -{ - struct c2wr_qp_create_req wr; - struct c2wr_qp_create_rep *reply; - struct c2_vq_req *vq_req; - struct c2_cq *send_cq = to_c2cq(qp_attrs->send_cq); - struct c2_cq *recv_cq = to_c2cq(qp_attrs->recv_cq); - unsigned long peer_pa; - u32 q_size, msg_size, mmap_size; - void __iomem *mmap; - int err; - - err = c2_alloc_qpn(c2dev, qp); - if (err) - return err; - qp->ibqp.qp_num = qp->qpn; - qp->ibqp.qp_type = IB_QPT_RC; - - /* Allocate the SQ and RQ shared pointers */ - qp->sq_mq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &qp->sq_mq.shared_dma, GFP_KERNEL); - if (!qp->sq_mq.shared) { - err = -ENOMEM; - goto bail0; - } - - qp->rq_mq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &qp->rq_mq.shared_dma, GFP_KERNEL); - if (!qp->rq_mq.shared) { - err = -ENOMEM; - goto bail1; - } - - /* Allocate the verbs request */ - vq_req = vq_req_alloc(c2dev); - if (vq_req == NULL) { - err = -ENOMEM; - goto bail2; - } - - /* Initialize the work request */ - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_QP_CREATE); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - wr.sq_cq_handle = send_cq->adapter_handle; - wr.rq_cq_handle = recv_cq->adapter_handle; - wr.sq_depth = cpu_to_be32(qp_attrs->cap.max_send_wr + 1); - wr.rq_depth = cpu_to_be32(qp_attrs->cap.max_recv_wr + 1); - wr.srq_handle = 0; - wr.flags = cpu_to_be32(QP_RDMA_READ | QP_RDMA_WRITE | QP_MW_BIND | - QP_ZERO_STAG | QP_RDMA_READ_RESPONSE); - wr.send_sgl_depth = cpu_to_be32(qp_attrs->cap.max_send_sge); - wr.recv_sgl_depth = cpu_to_be32(qp_attrs->cap.max_recv_sge); - wr.rdma_write_sgl_depth = cpu_to_be32(qp_attrs->cap.max_send_sge); - wr.shared_sq_ht = cpu_to_be64(qp->sq_mq.shared_dma); - wr.shared_rq_ht = cpu_to_be64(qp->rq_mq.shared_dma); - wr.ord = cpu_to_be32(C2_MAX_ORD_PER_QP); - wr.ird = cpu_to_be32(C2_MAX_IRD_PER_QP); - wr.pd_id = pd->pd_id; - wr.user_context = (unsigned long) qp; - - vq_req_get(c2dev, vq_req); - - /* Send the WR to the adapter */ - err = vq_send_wr(c2dev, (union c2wr *) & wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail3; - } - - /* Wait for the verb reply */ - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail3; - } - - /* Process the reply */ - reply = (struct c2wr_qp_create_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail3; - } - - if ((err = c2_wr_get_result(reply)) != 0) { - goto bail4; - } - - /* Fill in the kernel QP struct */ - atomic_set(&qp->refcount, 1); - qp->adapter_handle = reply->qp_handle; - qp->state = IB_QPS_RESET; - qp->send_sgl_depth = qp_attrs->cap.max_send_sge; - qp->rdma_write_sgl_depth = qp_attrs->cap.max_send_sge; - qp->recv_sgl_depth = qp_attrs->cap.max_recv_sge; - init_waitqueue_head(&qp->wait); - - /* Initialize the SQ MQ */ - q_size = be32_to_cpu(reply->sq_depth); - msg_size = be32_to_cpu(reply->sq_msg_size); - peer_pa = c2dev->pa + be32_to_cpu(reply->sq_mq_start); - mmap_size = PAGE_ALIGN(sizeof(struct c2_mq_shared) + msg_size * q_size); - mmap = ioremap_nocache(peer_pa, mmap_size); - if (!mmap) { - err = -ENOMEM; - goto bail5; - } - - c2_mq_req_init(&qp->sq_mq, - be32_to_cpu(reply->sq_mq_index), - q_size, - msg_size, - mmap + sizeof(struct c2_mq_shared), /* pool start */ - mmap, /* peer */ - C2_MQ_ADAPTER_TARGET); - - /* Initialize the RQ mq */ - q_size = be32_to_cpu(reply->rq_depth); - msg_size = be32_to_cpu(reply->rq_msg_size); - peer_pa = c2dev->pa + be32_to_cpu(reply->rq_mq_start); - mmap_size = PAGE_ALIGN(sizeof(struct c2_mq_shared) + msg_size * q_size); - mmap = ioremap_nocache(peer_pa, mmap_size); - if (!mmap) { - err = -ENOMEM; - goto bail6; - } - - c2_mq_req_init(&qp->rq_mq, - be32_to_cpu(reply->rq_mq_index), - q_size, - msg_size, - mmap + sizeof(struct c2_mq_shared), /* pool start */ - mmap, /* peer */ - C2_MQ_ADAPTER_TARGET); - - vq_repbuf_free(c2dev, reply); - vq_req_free(c2dev, vq_req); - - return 0; - -bail6: - iounmap(qp->sq_mq.peer); -bail5: - destroy_qp(c2dev, qp); -bail4: - vq_repbuf_free(c2dev, reply); -bail3: - vq_req_free(c2dev, vq_req); -bail2: - c2_free_mqsp(qp->rq_mq.shared); -bail1: - c2_free_mqsp(qp->sq_mq.shared); -bail0: - c2_free_qpn(c2dev, qp->qpn); - return err; -} - -static inline void c2_lock_cqs(struct c2_cq *send_cq, struct c2_cq *recv_cq) -{ - if (send_cq == recv_cq) - spin_lock_irq(&send_cq->lock); - else if (send_cq > recv_cq) { - spin_lock_irq(&send_cq->lock); - spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING); - } else { - spin_lock_irq(&recv_cq->lock); - spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING); - } -} - -static inline void c2_unlock_cqs(struct c2_cq *send_cq, struct c2_cq *recv_cq) -{ - if (send_cq == recv_cq) - spin_unlock_irq(&send_cq->lock); - else if (send_cq > recv_cq) { - spin_unlock(&recv_cq->lock); - spin_unlock_irq(&send_cq->lock); - } else { - spin_unlock(&send_cq->lock); - spin_unlock_irq(&recv_cq->lock); - } -} - -void c2_free_qp(struct c2_dev *c2dev, struct c2_qp *qp) -{ - struct c2_cq *send_cq; - struct c2_cq *recv_cq; - - send_cq = to_c2cq(qp->ibqp.send_cq); - recv_cq = to_c2cq(qp->ibqp.recv_cq); - - /* - * Lock CQs here, so that CQ polling code can do QP lookup - * without taking a lock. - */ - c2_lock_cqs(send_cq, recv_cq); - c2_free_qpn(c2dev, qp->qpn); - c2_unlock_cqs(send_cq, recv_cq); - - /* - * Destroy qp in the rnic... - */ - destroy_qp(c2dev, qp); - - /* - * Mark any unreaped CQEs as null and void. - */ - c2_cq_clean(c2dev, qp, send_cq->cqn); - if (send_cq != recv_cq) - c2_cq_clean(c2dev, qp, recv_cq->cqn); - /* - * Unmap the MQs and return the shared pointers - * to the message pool. - */ - iounmap(qp->sq_mq.peer); - iounmap(qp->rq_mq.peer); - c2_free_mqsp(qp->sq_mq.shared); - c2_free_mqsp(qp->rq_mq.shared); - - atomic_dec(&qp->refcount); - wait_event(qp->wait, !atomic_read(&qp->refcount)); -} - -/* - * Function: move_sgl - * - * Description: - * Move an SGL from the user's work request struct into a CCIL Work Request - * message, swapping to WR byte order and ensure the total length doesn't - * overflow. - * - * IN: - * dst - ptr to CCIL Work Request message SGL memory. - * src - ptr to the consumers SGL memory. - * - * OUT: none - * - * Return: - * CCIL status codes. - */ -static int -move_sgl(struct c2_data_addr * dst, struct ib_sge *src, int count, u32 * p_len, - u8 * actual_count) -{ - u32 tot = 0; /* running total */ - u8 acount = 0; /* running total non-0 len sge's */ - - while (count > 0) { - /* - * If the addition of this SGE causes the - * total SGL length to exceed 2^32-1, then - * fail-n-bail. - * - * If the current total plus the next element length - * wraps, then it will go negative and be less than the - * current total... - */ - if ((tot + src->length) < tot) { - return -EINVAL; - } - /* - * Bug: 1456 (as well as 1498 & 1643) - * Skip over any sge's supplied with len=0 - */ - if (src->length) { - tot += src->length; - dst->stag = cpu_to_be32(src->lkey); - dst->to = cpu_to_be64(src->addr); - dst->length = cpu_to_be32(src->length); - dst++; - acount++; - } - src++; - count--; - } - - if (acount == 0) { - /* - * Bug: 1476 (as well as 1498, 1456 and 1643) - * Setup the SGL in the WR to make it easier for the RNIC. - * This way, the FW doesn't have to deal with special cases. - * Setting length=0 should be sufficient. - */ - dst->stag = 0; - dst->to = 0; - dst->length = 0; - } - - *p_len = tot; - *actual_count = acount; - return 0; -} - -/* - * Function: c2_activity (private function) - * - * Description: - * Post an mq index to the host->adapter activity fifo. - * - * IN: - * c2dev - ptr to c2dev structure - * mq_index - mq index to post - * shared - value most recently written to shared - * - * OUT: - * - * Return: - * none - */ -static inline void c2_activity(struct c2_dev *c2dev, u32 mq_index, u16 shared) -{ - /* - * First read the register to see if the FIFO is full, and if so, - * spin until it's not. This isn't perfect -- there is no - * synchronization among the clients of the register, but in - * practice it prevents multiple CPU from hammering the bus - * with PCI RETRY. Note that when this does happen, the card - * cannot get on the bus and the card and system hang in a - * deadlock -- thus the need for this code. [TOT] - */ - while (readl(c2dev->regs + PCI_BAR0_ADAPTER_HINT) & 0x80000000) - udelay(10); - - __raw_writel(C2_HINT_MAKE(mq_index, shared), - c2dev->regs + PCI_BAR0_ADAPTER_HINT); -} - -/* - * Function: qp_wr_post - * - * Description: - * This in-line function allocates a MQ msg, then moves the host-copy of - * the completed WR into msg. Then it posts the message. - * - * IN: - * q - ptr to user MQ. - * wr - ptr to host-copy of the WR. - * qp - ptr to user qp - * size - Number of bytes to post. Assumed to be divisible by 4. - * - * OUT: none - * - * Return: - * CCIL status codes. - */ -static int qp_wr_post(struct c2_mq *q, union c2wr * wr, struct c2_qp *qp, u32 size) -{ - union c2wr *msg; - - msg = c2_mq_alloc(q); - if (msg == NULL) { - return -EINVAL; - } -#ifdef CCMSGMAGIC - ((c2wr_hdr_t *) wr)->magic = cpu_to_be32(CCWR_MAGIC); -#endif - - /* - * Since all header fields in the WR are the same as the - * CQE, set the following so the adapter need not. - */ - c2_wr_set_result(wr, CCERR_PENDING); - - /* - * Copy the wr down to the adapter - */ - memcpy((void *) msg, (void *) wr, size); - - c2_mq_produce(q); - return 0; -} - - -int c2_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr, - struct ib_send_wr **bad_wr) -{ - struct c2_dev *c2dev = to_c2dev(ibqp->device); - struct c2_qp *qp = to_c2qp(ibqp); - union c2wr wr; - unsigned long lock_flags; - int err = 0; - - u32 flags; - u32 tot_len; - u8 actual_sge_count; - u32 msg_size; - - if (qp->state > IB_QPS_RTS) { - err = -EINVAL; - goto out; - } - - while (ib_wr) { - - flags = 0; - wr.sqwr.sq_hdr.user_hdr.hdr.context = ib_wr->wr_id; - if (ib_wr->send_flags & IB_SEND_SIGNALED) { - flags |= SQ_SIGNALED; - } - - switch (ib_wr->opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_INV: - if (ib_wr->opcode == IB_WR_SEND) { - if (ib_wr->send_flags & IB_SEND_SOLICITED) - c2_wr_set_id(&wr, C2_WR_TYPE_SEND_SE); - else - c2_wr_set_id(&wr, C2_WR_TYPE_SEND); - wr.sqwr.send.remote_stag = 0; - } else { - if (ib_wr->send_flags & IB_SEND_SOLICITED) - c2_wr_set_id(&wr, C2_WR_TYPE_SEND_SE_INV); - else - c2_wr_set_id(&wr, C2_WR_TYPE_SEND_INV); - wr.sqwr.send.remote_stag = - cpu_to_be32(ib_wr->ex.invalidate_rkey); - } - - msg_size = sizeof(struct c2wr_send_req) + - sizeof(struct c2_data_addr) * ib_wr->num_sge; - if (ib_wr->num_sge > qp->send_sgl_depth) { - err = -EINVAL; - break; - } - if (ib_wr->send_flags & IB_SEND_FENCE) { - flags |= SQ_READ_FENCE; - } - err = move_sgl((struct c2_data_addr *) & (wr.sqwr.send.data), - ib_wr->sg_list, - ib_wr->num_sge, - &tot_len, &actual_sge_count); - wr.sqwr.send.sge_len = cpu_to_be32(tot_len); - c2_wr_set_sge_count(&wr, actual_sge_count); - break; - case IB_WR_RDMA_WRITE: - c2_wr_set_id(&wr, C2_WR_TYPE_RDMA_WRITE); - msg_size = sizeof(struct c2wr_rdma_write_req) + - (sizeof(struct c2_data_addr) * ib_wr->num_sge); - if (ib_wr->num_sge > qp->rdma_write_sgl_depth) { - err = -EINVAL; - break; - } - if (ib_wr->send_flags & IB_SEND_FENCE) { - flags |= SQ_READ_FENCE; - } - wr.sqwr.rdma_write.remote_stag = - cpu_to_be32(rdma_wr(ib_wr)->rkey); - wr.sqwr.rdma_write.remote_to = - cpu_to_be64(rdma_wr(ib_wr)->remote_addr); - err = move_sgl((struct c2_data_addr *) - & (wr.sqwr.rdma_write.data), - ib_wr->sg_list, - ib_wr->num_sge, - &tot_len, &actual_sge_count); - wr.sqwr.rdma_write.sge_len = cpu_to_be32(tot_len); - c2_wr_set_sge_count(&wr, actual_sge_count); - break; - case IB_WR_RDMA_READ: - c2_wr_set_id(&wr, C2_WR_TYPE_RDMA_READ); - msg_size = sizeof(struct c2wr_rdma_read_req); - - /* IWarp only suppots 1 sge for RDMA reads */ - if (ib_wr->num_sge > 1) { - err = -EINVAL; - break; - } - - /* - * Move the local and remote stag/to/len into the WR. - */ - wr.sqwr.rdma_read.local_stag = - cpu_to_be32(ib_wr->sg_list->lkey); - wr.sqwr.rdma_read.local_to = - cpu_to_be64(ib_wr->sg_list->addr); - wr.sqwr.rdma_read.remote_stag = - cpu_to_be32(rdma_wr(ib_wr)->rkey); - wr.sqwr.rdma_read.remote_to = - cpu_to_be64(rdma_wr(ib_wr)->remote_addr); - wr.sqwr.rdma_read.length = - cpu_to_be32(ib_wr->sg_list->length); - break; - default: - /* error */ - msg_size = 0; - err = -EINVAL; - break; - } - - /* - * If we had an error on the last wr build, then - * break out. Possible errors include bogus WR - * type, and a bogus SGL length... - */ - if (err) { - break; - } - - /* - * Store flags - */ - c2_wr_set_flags(&wr, flags); - - /* - * Post the puppy! - */ - spin_lock_irqsave(&qp->lock, lock_flags); - err = qp_wr_post(&qp->sq_mq, &wr, qp, msg_size); - if (err) { - spin_unlock_irqrestore(&qp->lock, lock_flags); - break; - } - - /* - * Enqueue mq index to activity FIFO. - */ - c2_activity(c2dev, qp->sq_mq.index, qp->sq_mq.hint_count); - spin_unlock_irqrestore(&qp->lock, lock_flags); - - ib_wr = ib_wr->next; - } - -out: - if (err) - *bad_wr = ib_wr; - return err; -} - -int c2_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr, - struct ib_recv_wr **bad_wr) -{ - struct c2_dev *c2dev = to_c2dev(ibqp->device); - struct c2_qp *qp = to_c2qp(ibqp); - union c2wr wr; - unsigned long lock_flags; - int err = 0; - - if (qp->state > IB_QPS_RTS) { - err = -EINVAL; - goto out; - } - - /* - * Try and post each work request - */ - while (ib_wr) { - u32 tot_len; - u8 actual_sge_count; - - if (ib_wr->num_sge > qp->recv_sgl_depth) { - err = -EINVAL; - break; - } - - /* - * Create local host-copy of the WR - */ - wr.rqwr.rq_hdr.user_hdr.hdr.context = ib_wr->wr_id; - c2_wr_set_id(&wr, CCWR_RECV); - c2_wr_set_flags(&wr, 0); - - /* sge_count is limited to eight bits. */ - BUG_ON(ib_wr->num_sge >= 256); - err = move_sgl((struct c2_data_addr *) & (wr.rqwr.data), - ib_wr->sg_list, - ib_wr->num_sge, &tot_len, &actual_sge_count); - c2_wr_set_sge_count(&wr, actual_sge_count); - - /* - * If we had an error on the last wr build, then - * break out. Possible errors include bogus WR - * type, and a bogus SGL length... - */ - if (err) { - break; - } - - spin_lock_irqsave(&qp->lock, lock_flags); - err = qp_wr_post(&qp->rq_mq, &wr, qp, qp->rq_mq.msg_size); - if (err) { - spin_unlock_irqrestore(&qp->lock, lock_flags); - break; - } - - /* - * Enqueue mq index to activity FIFO - */ - c2_activity(c2dev, qp->rq_mq.index, qp->rq_mq.hint_count); - spin_unlock_irqrestore(&qp->lock, lock_flags); - - ib_wr = ib_wr->next; - } - -out: - if (err) - *bad_wr = ib_wr; - return err; -} - -void c2_init_qp_table(struct c2_dev *c2dev) -{ - spin_lock_init(&c2dev->qp_table.lock); - idr_init(&c2dev->qp_table.idr); -} - -void c2_cleanup_qp_table(struct c2_dev *c2dev) -{ - idr_destroy(&c2dev->qp_table.idr); -} diff --git a/drivers/staging/rdma/amso1100/c2_rnic.c b/drivers/staging/rdma/amso1100/c2_rnic.c deleted file mode 100644 index 5e65c6d07ca4..000000000000 --- a/drivers/staging/rdma/amso1100/c2_rnic.c +++ /dev/null @@ -1,652 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include -#include "c2.h" -#include "c2_vq.h" - -/* Device capabilities */ -#define C2_MIN_PAGESIZE 1024 - -#define C2_MAX_MRS 32768 -#define C2_MAX_QPS 16000 -#define C2_MAX_WQE_SZ 256 -#define C2_MAX_QP_WR ((128*1024)/C2_MAX_WQE_SZ) -#define C2_MAX_SGES 4 -#define C2_MAX_SGE_RD 1 -#define C2_MAX_CQS 32768 -#define C2_MAX_CQES 4096 -#define C2_MAX_PDS 16384 - -/* - * Send the adapter INIT message to the amso1100 - */ -static int c2_adapter_init(struct c2_dev *c2dev) -{ - struct c2wr_init_req wr; - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_INIT); - wr.hdr.context = 0; - wr.hint_count = cpu_to_be64(c2dev->hint_count_dma); - wr.q0_host_shared = cpu_to_be64(c2dev->req_vq.shared_dma); - wr.q1_host_shared = cpu_to_be64(c2dev->rep_vq.shared_dma); - wr.q1_host_msg_pool = cpu_to_be64(c2dev->rep_vq.host_dma); - wr.q2_host_shared = cpu_to_be64(c2dev->aeq.shared_dma); - wr.q2_host_msg_pool = cpu_to_be64(c2dev->aeq.host_dma); - - /* Post the init message */ - return vq_send_wr(c2dev, (union c2wr *) & wr); -} - -/* - * Send the adapter TERM message to the amso1100 - */ -static void c2_adapter_term(struct c2_dev *c2dev) -{ - struct c2wr_init_req wr; - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_TERM); - wr.hdr.context = 0; - - /* Post the init message */ - vq_send_wr(c2dev, (union c2wr *) & wr); - c2dev->init = 0; - - return; -} - -/* - * Query the adapter - */ -static int c2_rnic_query(struct c2_dev *c2dev, struct ib_device_attr *props) -{ - struct c2_vq_req *vq_req; - struct c2wr_rnic_query_req wr; - struct c2wr_rnic_query_rep *reply; - int err; - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - c2_wr_set_id(&wr, CCWR_RNIC_QUERY); - wr.hdr.context = (unsigned long) vq_req; - wr.rnic_handle = c2dev->adapter_handle; - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) &wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail1; - - reply = - (struct c2wr_rnic_query_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) - err = -ENOMEM; - else - err = c2_errno(reply); - if (err) - goto bail2; - - props->fw_ver = - ((u64)be32_to_cpu(reply->fw_ver_major) << 32) | - ((be32_to_cpu(reply->fw_ver_minor) & 0xFFFF) << 16) | - (be32_to_cpu(reply->fw_ver_patch) & 0xFFFF); - memcpy(&props->sys_image_guid, c2dev->netdev->dev_addr, 6); - props->max_mr_size = 0xFFFFFFFF; - props->page_size_cap = ~(C2_MIN_PAGESIZE-1); - props->vendor_id = be32_to_cpu(reply->vendor_id); - props->vendor_part_id = be32_to_cpu(reply->part_number); - props->hw_ver = be32_to_cpu(reply->hw_version); - props->max_qp = be32_to_cpu(reply->max_qps); - props->max_qp_wr = be32_to_cpu(reply->max_qp_depth); - props->device_cap_flags = c2dev->device_cap_flags; - props->max_sge = C2_MAX_SGES; - props->max_sge_rd = C2_MAX_SGE_RD; - props->max_cq = be32_to_cpu(reply->max_cqs); - props->max_cqe = be32_to_cpu(reply->max_cq_depth); - props->max_mr = be32_to_cpu(reply->max_mrs); - props->max_pd = be32_to_cpu(reply->max_pds); - props->max_qp_rd_atom = be32_to_cpu(reply->max_qp_ird); - props->max_ee_rd_atom = 0; - props->max_res_rd_atom = be32_to_cpu(reply->max_global_ird); - props->max_qp_init_rd_atom = be32_to_cpu(reply->max_qp_ord); - props->max_ee_init_rd_atom = 0; - props->atomic_cap = IB_ATOMIC_NONE; - props->max_ee = 0; - props->max_rdd = 0; - props->max_mw = be32_to_cpu(reply->max_mws); - props->max_raw_ipv6_qp = 0; - props->max_raw_ethy_qp = 0; - props->max_mcast_grp = 0; - props->max_mcast_qp_attach = 0; - props->max_total_mcast_qp_attach = 0; - props->max_ah = 0; - props->max_fmr = 0; - props->max_map_per_fmr = 0; - props->max_srq = 0; - props->max_srq_wr = 0; - props->max_srq_sge = 0; - props->max_pkeys = 0; - props->local_ca_ack_delay = 0; - - bail2: - vq_repbuf_free(c2dev, reply); - - bail1: - vq_req_free(c2dev, vq_req); - return err; -} - -/* - * Add an IP address to the RNIC interface - */ -int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask) -{ - struct c2_vq_req *vq_req; - struct c2wr_rnic_setconfig_req *wr; - struct c2wr_rnic_setconfig_rep *reply; - struct c2_netaddr netaddr; - int err, len; - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - len = sizeof(struct c2_netaddr); - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - err = -ENOMEM; - goto bail0; - } - - c2_wr_set_id(wr, CCWR_RNIC_SETCONFIG); - wr->hdr.context = (unsigned long) vq_req; - wr->rnic_handle = c2dev->adapter_handle; - wr->option = cpu_to_be32(C2_CFG_ADD_ADDR); - - netaddr.ip_addr = inaddr; - netaddr.netmask = inmask; - netaddr.mtu = 0; - - memcpy(wr->data, &netaddr, len); - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail1; - - reply = - (struct c2wr_rnic_setconfig_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail1; - } - - err = c2_errno(reply); - vq_repbuf_free(c2dev, reply); - -bail1: - kfree(wr); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -/* - * Delete an IP address from the RNIC interface - */ -int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask) -{ - struct c2_vq_req *vq_req; - struct c2wr_rnic_setconfig_req *wr; - struct c2wr_rnic_setconfig_rep *reply; - struct c2_netaddr netaddr; - int err, len; - - vq_req = vq_req_alloc(c2dev); - if (!vq_req) - return -ENOMEM; - - len = sizeof(struct c2_netaddr); - wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); - if (!wr) { - err = -ENOMEM; - goto bail0; - } - - c2_wr_set_id(wr, CCWR_RNIC_SETCONFIG); - wr->hdr.context = (unsigned long) vq_req; - wr->rnic_handle = c2dev->adapter_handle; - wr->option = cpu_to_be32(C2_CFG_DEL_ADDR); - - netaddr.ip_addr = inaddr; - netaddr.netmask = inmask; - netaddr.mtu = 0; - - memcpy(wr->data, &netaddr, len); - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, (union c2wr *) wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail1; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) - goto bail1; - - reply = - (struct c2wr_rnic_setconfig_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail1; - } - - err = c2_errno(reply); - vq_repbuf_free(c2dev, reply); - -bail1: - kfree(wr); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -/* - * Open a single RNIC instance to use with all - * low level openib calls - */ -static int c2_rnic_open(struct c2_dev *c2dev) -{ - struct c2_vq_req *vq_req; - union c2wr wr; - struct c2wr_rnic_open_rep *reply; - int err; - - vq_req = vq_req_alloc(c2dev); - if (vq_req == NULL) { - return -ENOMEM; - } - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_RNIC_OPEN); - wr.rnic_open.req.hdr.context = (unsigned long) (vq_req); - wr.rnic_open.req.flags = cpu_to_be16(RNIC_PRIV_MODE); - wr.rnic_open.req.port_num = cpu_to_be16(0); - wr.rnic_open.req.user_context = (unsigned long) c2dev; - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, &wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail0; - } - - reply = (struct c2wr_rnic_open_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - if ((err = c2_errno(reply)) != 0) { - goto bail1; - } - - c2dev->adapter_handle = reply->rnic_handle; - -bail1: - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -/* - * Close the RNIC instance - */ -static int c2_rnic_close(struct c2_dev *c2dev) -{ - struct c2_vq_req *vq_req; - union c2wr wr; - struct c2wr_rnic_close_rep *reply; - int err; - - vq_req = vq_req_alloc(c2dev); - if (vq_req == NULL) { - return -ENOMEM; - } - - memset(&wr, 0, sizeof(wr)); - c2_wr_set_id(&wr, CCWR_RNIC_CLOSE); - wr.rnic_close.req.hdr.context = (unsigned long) vq_req; - wr.rnic_close.req.rnic_handle = c2dev->adapter_handle; - - vq_req_get(c2dev, vq_req); - - err = vq_send_wr(c2dev, &wr); - if (err) { - vq_req_put(c2dev, vq_req); - goto bail0; - } - - err = vq_wait_for_reply(c2dev, vq_req); - if (err) { - goto bail0; - } - - reply = (struct c2wr_rnic_close_rep *) (unsigned long) (vq_req->reply_msg); - if (!reply) { - err = -ENOMEM; - goto bail0; - } - - if ((err = c2_errno(reply)) != 0) { - goto bail1; - } - - c2dev->adapter_handle = 0; - -bail1: - vq_repbuf_free(c2dev, reply); -bail0: - vq_req_free(c2dev, vq_req); - return err; -} - -/* - * Called by c2_probe to initialize the RNIC. This principally - * involves initializing the various limits and resource pools that - * comprise the RNIC instance. - */ -int c2_rnic_init(struct c2_dev *c2dev) -{ - int err; - u32 qsize, msgsize; - void *q1_pages; - void *q2_pages; - void __iomem *mmio_regs; - - /* Device capabilities */ - c2dev->device_cap_flags = - (IB_DEVICE_RESIZE_MAX_WR | - IB_DEVICE_CURR_QP_STATE_MOD | - IB_DEVICE_SYS_IMAGE_GUID | - IB_DEVICE_LOCAL_DMA_LKEY | - IB_DEVICE_MEM_WINDOW); - - /* Allocate the qptr_array */ - c2dev->qptr_array = vzalloc(C2_MAX_CQS * sizeof(void *)); - if (!c2dev->qptr_array) { - return -ENOMEM; - } - - /* Initialize the qptr_array */ - c2dev->qptr_array[0] = (void *) &c2dev->req_vq; - c2dev->qptr_array[1] = (void *) &c2dev->rep_vq; - c2dev->qptr_array[2] = (void *) &c2dev->aeq; - - /* Initialize data structures */ - init_waitqueue_head(&c2dev->req_vq_wo); - spin_lock_init(&c2dev->vqlock); - spin_lock_init(&c2dev->lock); - - /* Allocate MQ shared pointer pool for kernel clients. User - * mode client pools are hung off the user context - */ - err = c2_init_mqsp_pool(c2dev, GFP_KERNEL, &c2dev->kern_mqsp_pool); - if (err) { - goto bail0; - } - - /* Allocate shared pointers for Q0, Q1, and Q2 from - * the shared pointer pool. - */ - - c2dev->hint_count = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &c2dev->hint_count_dma, - GFP_KERNEL); - c2dev->req_vq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &c2dev->req_vq.shared_dma, - GFP_KERNEL); - c2dev->rep_vq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &c2dev->rep_vq.shared_dma, - GFP_KERNEL); - c2dev->aeq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool, - &c2dev->aeq.shared_dma, GFP_KERNEL); - if (!c2dev->hint_count || !c2dev->req_vq.shared || - !c2dev->rep_vq.shared || !c2dev->aeq.shared) { - err = -ENOMEM; - goto bail1; - } - - mmio_regs = c2dev->kva; - /* Initialize the Verbs Request Queue */ - c2_mq_req_init(&c2dev->req_vq, 0, - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_QSIZE)), - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_MSGSIZE)), - mmio_regs + - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_POOLSTART)), - mmio_regs + - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_SHARED)), - C2_MQ_ADAPTER_TARGET); - - /* Initialize the Verbs Reply Queue */ - qsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_QSIZE)); - msgsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_MSGSIZE)); - q1_pages = dma_alloc_coherent(&c2dev->pcidev->dev, qsize * msgsize, - &c2dev->rep_vq.host_dma, GFP_KERNEL); - if (!q1_pages) { - err = -ENOMEM; - goto bail1; - } - dma_unmap_addr_set(&c2dev->rep_vq, mapping, c2dev->rep_vq.host_dma); - pr_debug("%s rep_vq va %p dma %llx\n", __func__, q1_pages, - (unsigned long long) c2dev->rep_vq.host_dma); - c2_mq_rep_init(&c2dev->rep_vq, - 1, - qsize, - msgsize, - q1_pages, - mmio_regs + - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_SHARED)), - C2_MQ_HOST_TARGET); - - /* Initialize the Asynchronus Event Queue */ - qsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_QSIZE)); - msgsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_MSGSIZE)); - q2_pages = dma_alloc_coherent(&c2dev->pcidev->dev, qsize * msgsize, - &c2dev->aeq.host_dma, GFP_KERNEL); - if (!q2_pages) { - err = -ENOMEM; - goto bail2; - } - dma_unmap_addr_set(&c2dev->aeq, mapping, c2dev->aeq.host_dma); - pr_debug("%s aeq va %p dma %llx\n", __func__, q2_pages, - (unsigned long long) c2dev->aeq.host_dma); - c2_mq_rep_init(&c2dev->aeq, - 2, - qsize, - msgsize, - q2_pages, - mmio_regs + - be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_SHARED)), - C2_MQ_HOST_TARGET); - - /* Initialize the verbs request allocator */ - err = vq_init(c2dev); - if (err) - goto bail3; - - /* Enable interrupts on the adapter */ - writel(0, c2dev->regs + C2_IDIS); - - /* create the WR init message */ - err = c2_adapter_init(c2dev); - if (err) - goto bail4; - c2dev->init++; - - /* open an adapter instance */ - err = c2_rnic_open(c2dev); - if (err) - goto bail4; - - /* Initialize cached the adapter limits */ - err = c2_rnic_query(c2dev, &c2dev->props); - if (err) - goto bail5; - - /* Initialize the PD pool */ - err = c2_init_pd_table(c2dev); - if (err) - goto bail5; - - /* Initialize the QP pool */ - c2_init_qp_table(c2dev); - return 0; - -bail5: - c2_rnic_close(c2dev); -bail4: - vq_term(c2dev); -bail3: - dma_free_coherent(&c2dev->pcidev->dev, - c2dev->aeq.q_size * c2dev->aeq.msg_size, - q2_pages, dma_unmap_addr(&c2dev->aeq, mapping)); -bail2: - dma_free_coherent(&c2dev->pcidev->dev, - c2dev->rep_vq.q_size * c2dev->rep_vq.msg_size, - q1_pages, dma_unmap_addr(&c2dev->rep_vq, mapping)); -bail1: - c2_free_mqsp_pool(c2dev, c2dev->kern_mqsp_pool); -bail0: - vfree(c2dev->qptr_array); - - return err; -} - -/* - * Called by c2_remove to cleanup the RNIC resources. - */ -void c2_rnic_term(struct c2_dev *c2dev) -{ - - /* Close the open adapter instance */ - c2_rnic_close(c2dev); - - /* Send the TERM message to the adapter */ - c2_adapter_term(c2dev); - - /* Disable interrupts on the adapter */ - writel(1, c2dev->regs + C2_IDIS); - - /* Free the QP pool */ - c2_cleanup_qp_table(c2dev); - - /* Free the PD pool */ - c2_cleanup_pd_table(c2dev); - - /* Free the verbs request allocator */ - vq_term(c2dev); - - /* Free the asynchronus event queue */ - dma_free_coherent(&c2dev->pcidev->dev, - c2dev->aeq.q_size * c2dev->aeq.msg_size, - c2dev->aeq.msg_pool.host, - dma_unmap_addr(&c2dev->aeq, mapping)); - - /* Free the verbs reply queue */ - dma_free_coherent(&c2dev->pcidev->dev, - c2dev->rep_vq.q_size * c2dev->rep_vq.msg_size, - c2dev->rep_vq.msg_pool.host, - dma_unmap_addr(&c2dev->rep_vq, mapping)); - - /* Free the MQ shared pointer pool */ - c2_free_mqsp_pool(c2dev, c2dev->kern_mqsp_pool); - - /* Free the qptr_array */ - vfree(c2dev->qptr_array); - - return; -} diff --git a/drivers/staging/rdma/amso1100/c2_status.h b/drivers/staging/rdma/amso1100/c2_status.h deleted file mode 100644 index 6ee4aa92d875..000000000000 --- a/drivers/staging/rdma/amso1100/c2_status.h +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#ifndef _C2_STATUS_H_ -#define _C2_STATUS_H_ - -/* - * Verbs Status Codes - */ -enum c2_status { - C2_OK = 0, /* This must be zero */ - CCERR_INSUFFICIENT_RESOURCES = 1, - CCERR_INVALID_MODIFIER = 2, - CCERR_INVALID_MODE = 3, - CCERR_IN_USE = 4, - CCERR_INVALID_RNIC = 5, - CCERR_INTERRUPTED_OPERATION = 6, - CCERR_INVALID_EH = 7, - CCERR_INVALID_CQ = 8, - CCERR_CQ_EMPTY = 9, - CCERR_NOT_IMPLEMENTED = 10, - CCERR_CQ_DEPTH_TOO_SMALL = 11, - CCERR_PD_IN_USE = 12, - CCERR_INVALID_PD = 13, - CCERR_INVALID_SRQ = 14, - CCERR_INVALID_ADDRESS = 15, - CCERR_INVALID_NETMASK = 16, - CCERR_INVALID_QP = 17, - CCERR_INVALID_QP_STATE = 18, - CCERR_TOO_MANY_WRS_POSTED = 19, - CCERR_INVALID_WR_TYPE = 20, - CCERR_INVALID_SGL_LENGTH = 21, - CCERR_INVALID_SQ_DEPTH = 22, - CCERR_INVALID_RQ_DEPTH = 23, - CCERR_INVALID_ORD = 24, - CCERR_INVALID_IRD = 25, - CCERR_QP_ATTR_CANNOT_CHANGE = 26, - CCERR_INVALID_STAG = 27, - CCERR_QP_IN_USE = 28, - CCERR_OUTSTANDING_WRS = 29, - CCERR_STAG_IN_USE = 30, - CCERR_INVALID_STAG_INDEX = 31, - CCERR_INVALID_SGL_FORMAT = 32, - CCERR_ADAPTER_TIMEOUT = 33, - CCERR_INVALID_CQ_DEPTH = 34, - CCERR_INVALID_PRIVATE_DATA_LENGTH = 35, - CCERR_INVALID_EP = 36, - CCERR_MR_IN_USE = CCERR_STAG_IN_USE, - CCERR_FLUSHED = 38, - CCERR_INVALID_WQE = 39, - CCERR_LOCAL_QP_CATASTROPHIC_ERROR = 40, - CCERR_REMOTE_TERMINATION_ERROR = 41, - CCERR_BASE_AND_BOUNDS_VIOLATION = 42, - CCERR_ACCESS_VIOLATION = 43, - CCERR_INVALID_PD_ID = 44, - CCERR_WRAP_ERROR = 45, - CCERR_INV_STAG_ACCESS_ERROR = 46, - CCERR_ZERO_RDMA_READ_RESOURCES = 47, - CCERR_QP_NOT_PRIVILEGED = 48, - CCERR_STAG_STATE_NOT_INVALID = 49, - CCERR_INVALID_PAGE_SIZE = 50, - CCERR_INVALID_BUFFER_SIZE = 51, - CCERR_INVALID_PBE = 52, - CCERR_INVALID_FBO = 53, - CCERR_INVALID_LENGTH = 54, - CCERR_INVALID_ACCESS_RIGHTS = 55, - CCERR_PBL_TOO_BIG = 56, - CCERR_INVALID_VA = 57, - CCERR_INVALID_REGION = 58, - CCERR_INVALID_WINDOW = 59, - CCERR_TOTAL_LENGTH_TOO_BIG = 60, - CCERR_INVALID_QP_ID = 61, - CCERR_ADDR_IN_USE = 62, - CCERR_ADDR_NOT_AVAIL = 63, - CCERR_NET_DOWN = 64, - CCERR_NET_UNREACHABLE = 65, - CCERR_CONN_ABORTED = 66, - CCERR_CONN_RESET = 67, - CCERR_NO_BUFS = 68, - CCERR_CONN_TIMEDOUT = 69, - CCERR_CONN_REFUSED = 70, - CCERR_HOST_UNREACHABLE = 71, - CCERR_INVALID_SEND_SGL_DEPTH = 72, - CCERR_INVALID_RECV_SGL_DEPTH = 73, - CCERR_INVALID_RDMA_WRITE_SGL_DEPTH = 74, - CCERR_INSUFFICIENT_PRIVILEGES = 75, - CCERR_STACK_ERROR = 76, - CCERR_INVALID_VERSION = 77, - CCERR_INVALID_MTU = 78, - CCERR_INVALID_IMAGE = 79, - CCERR_PENDING = 98, /* not an error; user internally by adapter */ - CCERR_DEFER = 99, /* not an error; used internally by adapter */ - CCERR_FAILED_WRITE = 100, - CCERR_FAILED_ERASE = 101, - CCERR_FAILED_VERIFICATION = 102, - CCERR_NOT_FOUND = 103, - -}; - -/* - * CCAE_ACTIVE_CONNECT_RESULTS status result codes. - */ -enum c2_connect_status { - C2_CONN_STATUS_SUCCESS = C2_OK, - C2_CONN_STATUS_NO_MEM = CCERR_INSUFFICIENT_RESOURCES, - C2_CONN_STATUS_TIMEDOUT = CCERR_CONN_TIMEDOUT, - C2_CONN_STATUS_REFUSED = CCERR_CONN_REFUSED, - C2_CONN_STATUS_NETUNREACH = CCERR_NET_UNREACHABLE, - C2_CONN_STATUS_HOSTUNREACH = CCERR_HOST_UNREACHABLE, - C2_CONN_STATUS_INVALID_RNIC = CCERR_INVALID_RNIC, - C2_CONN_STATUS_INVALID_QP = CCERR_INVALID_QP, - C2_CONN_STATUS_INVALID_QP_STATE = CCERR_INVALID_QP_STATE, - C2_CONN_STATUS_REJECTED = CCERR_CONN_RESET, - C2_CONN_STATUS_ADDR_NOT_AVAIL = CCERR_ADDR_NOT_AVAIL, -}; - -/* - * Flash programming status codes. - */ -enum c2_flash_status { - C2_FLASH_STATUS_SUCCESS = 0x0000, - C2_FLASH_STATUS_VERIFY_ERR = 0x0002, - C2_FLASH_STATUS_IMAGE_ERR = 0x0004, - C2_FLASH_STATUS_ECLBS = 0x0400, - C2_FLASH_STATUS_PSLBS = 0x0800, - C2_FLASH_STATUS_VPENS = 0x1000, -}; - -#endif /* _C2_STATUS_H_ */ diff --git a/drivers/staging/rdma/amso1100/c2_user.h b/drivers/staging/rdma/amso1100/c2_user.h deleted file mode 100644 index 7e9e7ad65467..000000000000 --- a/drivers/staging/rdma/amso1100/c2_user.h +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Copyright (c) 2005 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Cisco Systems. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#ifndef C2_USER_H -#define C2_USER_H - -#include - -/* - * Make sure that all structs defined in this file remain laid out so - * that they pack the same way on 32-bit and 64-bit architectures (to - * avoid incompatibility between 32-bit userspace and 64-bit kernels). - * In particular do not use pointer types -- pass pointers in __u64 - * instead. - */ - -struct c2_alloc_ucontext_resp { - __u32 qp_tab_size; - __u32 uarc_size; -}; - -struct c2_alloc_pd_resp { - __u32 pdn; - __u32 reserved; -}; - -struct c2_create_cq { - __u32 lkey; - __u32 pdn; - __u64 arm_db_page; - __u64 set_db_page; - __u32 arm_db_index; - __u32 set_db_index; -}; - -struct c2_create_cq_resp { - __u32 cqn; - __u32 reserved; -}; - -struct c2_create_qp { - __u32 lkey; - __u32 reserved; - __u64 sq_db_page; - __u64 rq_db_page; - __u32 sq_db_index; - __u32 rq_db_index; -}; - -#endif /* C2_USER_H */ diff --git a/drivers/staging/rdma/amso1100/c2_vq.c b/drivers/staging/rdma/amso1100/c2_vq.c deleted file mode 100644 index 2ec716fb2edb..000000000000 --- a/drivers/staging/rdma/amso1100/c2_vq.c +++ /dev/null @@ -1,260 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include -#include - -#include "c2_vq.h" -#include "c2_provider.h" - -/* - * Verbs Request Objects: - * - * VQ Request Objects are allocated by the kernel verbs handlers. - * They contain a wait object, a refcnt, an atomic bool indicating that the - * adapter has replied, and a copy of the verb reply work request. - * A pointer to the VQ Request Object is passed down in the context - * field of the work request message, and reflected back by the adapter - * in the verbs reply message. The function handle_vq() in the interrupt - * path will use this pointer to: - * 1) append a copy of the verbs reply message - * 2) mark that the reply is ready - * 3) wake up the kernel verbs handler blocked awaiting the reply. - * - * - * The kernel verbs handlers do a "get" to put a 2nd reference on the - * VQ Request object. If the kernel verbs handler exits before the adapter - * can respond, this extra reference will keep the VQ Request object around - * until the adapter's reply can be processed. The reason we need this is - * because a pointer to this object is stuffed into the context field of - * the verbs work request message, and reflected back in the reply message. - * It is used in the interrupt handler (handle_vq()) to wake up the appropriate - * kernel verb handler that is blocked awaiting the verb reply. - * So handle_vq() will do a "put" on the object when it's done accessing it. - * NOTE: If we guarantee that the kernel verb handler will never bail before - * getting the reply, then we don't need these refcnts. - * - * - * VQ Request objects are freed by the kernel verbs handlers only - * after the verb has been processed, or when the adapter fails and - * does not reply. - * - * - * Verbs Reply Buffers: - * - * VQ Reply bufs are local host memory copies of a - * outstanding Verb Request reply - * message. The are always allocated by the kernel verbs handlers, and _may_ be - * freed by either the kernel verbs handler -or- the interrupt handler. The - * kernel verbs handler _must_ free the repbuf, then free the vq request object - * in that order. - */ - -int vq_init(struct c2_dev *c2dev) -{ - sprintf(c2dev->vq_cache_name, "c2-vq:dev%c", - (char) ('0' + c2dev->devnum)); - c2dev->host_msg_cache = - kmem_cache_create(c2dev->vq_cache_name, c2dev->rep_vq.msg_size, 0, - SLAB_HWCACHE_ALIGN, NULL); - if (c2dev->host_msg_cache == NULL) { - return -ENOMEM; - } - return 0; -} - -void vq_term(struct c2_dev *c2dev) -{ - kmem_cache_destroy(c2dev->host_msg_cache); -} - -/* vq_req_alloc - allocate a VQ Request Object and initialize it. - * The refcnt is set to 1. - */ -struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev) -{ - struct c2_vq_req *r; - - r = kmalloc(sizeof(struct c2_vq_req), GFP_KERNEL); - if (r) { - init_waitqueue_head(&r->wait_object); - r->reply_msg = 0; - r->event = 0; - r->cm_id = NULL; - r->qp = NULL; - atomic_set(&r->refcnt, 1); - atomic_set(&r->reply_ready, 0); - } - return r; -} - - -/* vq_req_free - free the VQ Request Object. It is assumed the verbs handler - * has already free the VQ Reply Buffer if it existed. - */ -void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *r) -{ - r->reply_msg = 0; - if (atomic_dec_and_test(&r->refcnt)) { - kfree(r); - } -} - -/* vq_req_get - reference a VQ Request Object. Done - * only in the kernel verbs handlers. - */ -void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *r) -{ - atomic_inc(&r->refcnt); -} - - -/* vq_req_put - dereference and potentially free a VQ Request Object. - * - * This is only called by handle_vq() on the - * interrupt when it is done processing - * a verb reply message. If the associated - * kernel verbs handler has already bailed, - * then this put will actually free the VQ - * Request object _and_ the VQ Reply Buffer - * if it exists. - */ -void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *r) -{ - if (atomic_dec_and_test(&r->refcnt)) { - if (r->reply_msg != 0) - vq_repbuf_free(c2dev, - (void *) (unsigned long) r->reply_msg); - kfree(r); - } -} - - -/* - * vq_repbuf_alloc - allocate a VQ Reply Buffer. - */ -void *vq_repbuf_alloc(struct c2_dev *c2dev) -{ - return kmem_cache_alloc(c2dev->host_msg_cache, GFP_ATOMIC); -} - -/* - * vq_send_wr - post a verbs request message to the Verbs Request Queue. - * If a message is not available in the MQ, then block until one is available. - * NOTE: handle_mq() on the interrupt context will wake up threads blocked here. - * When the adapter drains the Verbs Request Queue, - * it inserts MQ index 0 in to the - * adapter->host activity fifo and interrupts the host. - */ -int vq_send_wr(struct c2_dev *c2dev, union c2wr *wr) -{ - void *msg; - wait_queue_t __wait; - - /* - * grab adapter vq lock - */ - spin_lock(&c2dev->vqlock); - - /* - * allocate msg - */ - msg = c2_mq_alloc(&c2dev->req_vq); - - /* - * If we cannot get a msg, then we'll wait - * When a messages are available, the int handler will wake_up() - * any waiters. - */ - while (msg == NULL) { - pr_debug("%s:%d no available msg in VQ, waiting...\n", - __func__, __LINE__); - init_waitqueue_entry(&__wait, current); - add_wait_queue(&c2dev->req_vq_wo, &__wait); - spin_unlock(&c2dev->vqlock); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (!c2_mq_full(&c2dev->req_vq)) { - break; - } - if (!signal_pending(current)) { - schedule_timeout(1 * HZ); /* 1 second... */ - continue; - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&c2dev->req_vq_wo, &__wait); - return -EINTR; - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&c2dev->req_vq_wo, &__wait); - spin_lock(&c2dev->vqlock); - msg = c2_mq_alloc(&c2dev->req_vq); - } - - /* - * copy wr into adapter msg - */ - memcpy(msg, wr, c2dev->req_vq.msg_size); - - /* - * post msg - */ - c2_mq_produce(&c2dev->req_vq); - - /* - * release adapter vq lock - */ - spin_unlock(&c2dev->vqlock); - return 0; -} - - -/* - * vq_wait_for_reply - block until the adapter posts a Verb Reply Message. - */ -int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req) -{ - if (!wait_event_timeout(req->wait_object, - atomic_read(&req->reply_ready), - 60*HZ)) - return -ETIMEDOUT; - - return 0; -} - -/* - * vq_repbuf_free - Free a Verbs Reply Buffer. - */ -void vq_repbuf_free(struct c2_dev *c2dev, void *reply) -{ - kmem_cache_free(c2dev->host_msg_cache, reply); -} diff --git a/drivers/staging/rdma/amso1100/c2_vq.h b/drivers/staging/rdma/amso1100/c2_vq.h deleted file mode 100644 index c1f6cef60213..000000000000 --- a/drivers/staging/rdma/amso1100/c2_vq.h +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#ifndef _C2_VQ_H_ -#define _C2_VQ_H_ -#include -#include "c2.h" -#include "c2_wr.h" -#include "c2_provider.h" - -struct c2_vq_req { - u64 reply_msg; /* ptr to reply msg */ - wait_queue_head_t wait_object; /* wait object for vq reqs */ - atomic_t reply_ready; /* set when reply is ready */ - atomic_t refcnt; /* used to cancel WRs... */ - int event; - struct iw_cm_id *cm_id; - struct c2_qp *qp; -}; - -int vq_init(struct c2_dev *c2dev); -void vq_term(struct c2_dev *c2dev); - -struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev); -void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *req); -void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *req); -void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *req); -int vq_send_wr(struct c2_dev *c2dev, union c2wr * wr); - -void *vq_repbuf_alloc(struct c2_dev *c2dev); -void vq_repbuf_free(struct c2_dev *c2dev, void *reply); - -int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req); -#endif /* _C2_VQ_H_ */ diff --git a/drivers/staging/rdma/amso1100/c2_wr.h b/drivers/staging/rdma/amso1100/c2_wr.h deleted file mode 100644 index 8d4b4ca463ca..000000000000 --- a/drivers/staging/rdma/amso1100/c2_wr.h +++ /dev/null @@ -1,1520 +0,0 @@ -/* - * Copyright (c) 2005 Ammasso, Inc. All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#ifndef _C2_WR_H_ -#define _C2_WR_H_ - -#ifdef CCDEBUG -#define CCWR_MAGIC 0xb07700b0 -#endif - -#define C2_QP_NO_ATTR_CHANGE 0xFFFFFFFF - -/* Maximum allowed size in bytes of private_data exchange - * on connect. - */ -#define C2_MAX_PRIVATE_DATA_SIZE 200 - -/* - * These types are shared among the adapter, host, and CCIL consumer. - */ -enum c2_cq_notification_type { - C2_CQ_NOTIFICATION_TYPE_NONE = 1, - C2_CQ_NOTIFICATION_TYPE_NEXT, - C2_CQ_NOTIFICATION_TYPE_NEXT_SE -}; - -enum c2_setconfig_cmd { - C2_CFG_ADD_ADDR = 1, - C2_CFG_DEL_ADDR = 2, - C2_CFG_ADD_ROUTE = 3, - C2_CFG_DEL_ROUTE = 4 -}; - -enum c2_getconfig_cmd { - C2_GETCONFIG_ROUTES = 1, - C2_GETCONFIG_ADDRS -}; - -/* - * CCIL Work Request Identifiers - */ -enum c2wr_ids { - CCWR_RNIC_OPEN = 1, - CCWR_RNIC_QUERY, - CCWR_RNIC_SETCONFIG, - CCWR_RNIC_GETCONFIG, - CCWR_RNIC_CLOSE, - CCWR_CQ_CREATE, - CCWR_CQ_QUERY, - CCWR_CQ_MODIFY, - CCWR_CQ_DESTROY, - CCWR_QP_CONNECT, - CCWR_PD_ALLOC, - CCWR_PD_DEALLOC, - CCWR_SRQ_CREATE, - CCWR_SRQ_QUERY, - CCWR_SRQ_MODIFY, - CCWR_SRQ_DESTROY, - CCWR_QP_CREATE, - CCWR_QP_QUERY, - CCWR_QP_MODIFY, - CCWR_QP_DESTROY, - CCWR_NSMR_STAG_ALLOC, - CCWR_NSMR_REGISTER, - CCWR_NSMR_PBL, - CCWR_STAG_DEALLOC, - CCWR_NSMR_REREGISTER, - CCWR_SMR_REGISTER, - CCWR_MR_QUERY, - CCWR_MW_ALLOC, - CCWR_MW_QUERY, - CCWR_EP_CREATE, - CCWR_EP_GETOPT, - CCWR_EP_SETOPT, - CCWR_EP_DESTROY, - CCWR_EP_BIND, - CCWR_EP_CONNECT, - CCWR_EP_LISTEN, - CCWR_EP_SHUTDOWN, - CCWR_EP_LISTEN_CREATE, - CCWR_EP_LISTEN_DESTROY, - CCWR_EP_QUERY, - CCWR_CR_ACCEPT, - CCWR_CR_REJECT, - CCWR_CONSOLE, - CCWR_TERM, - CCWR_FLASH_INIT, - CCWR_FLASH, - CCWR_BUF_ALLOC, - CCWR_BUF_FREE, - CCWR_FLASH_WRITE, - CCWR_INIT, /* WARNING: Don't move this ever again! */ - - - - /* Add new IDs here */ - - - - /* - * WARNING: CCWR_LAST must always be the last verbs id defined! - * All the preceding IDs are fixed, and must not change. - * You can add new IDs, but must not remove or reorder - * any IDs. If you do, YOU will ruin any hope of - * compatibility between versions. - */ - CCWR_LAST, - - /* - * Start over at 1 so that arrays indexed by user wr id's - * begin at 1. This is OK since the verbs and user wr id's - * are always used on disjoint sets of queues. - */ - /* - * The order of the CCWR_SEND_XX verbs must - * match the order of the RDMA_OPs - */ - CCWR_SEND = 1, - CCWR_SEND_INV, - CCWR_SEND_SE, - CCWR_SEND_SE_INV, - CCWR_RDMA_WRITE, - CCWR_RDMA_READ, - CCWR_RDMA_READ_INV, - CCWR_MW_BIND, - CCWR_NSMR_FASTREG, - CCWR_STAG_INVALIDATE, - CCWR_RECV, - CCWR_NOP, - CCWR_UNIMPL, -/* WARNING: This must always be the last user wr id defined! */ -}; -#define RDMA_SEND_OPCODE_FROM_WR_ID(x) (x+2) - -/* - * SQ/RQ Work Request Types - */ -enum c2_wr_type { - C2_WR_TYPE_SEND = CCWR_SEND, - C2_WR_TYPE_SEND_SE = CCWR_SEND_SE, - C2_WR_TYPE_SEND_INV = CCWR_SEND_INV, - C2_WR_TYPE_SEND_SE_INV = CCWR_SEND_SE_INV, - C2_WR_TYPE_RDMA_WRITE = CCWR_RDMA_WRITE, - C2_WR_TYPE_RDMA_READ = CCWR_RDMA_READ, - C2_WR_TYPE_RDMA_READ_INV_STAG = CCWR_RDMA_READ_INV, - C2_WR_TYPE_BIND_MW = CCWR_MW_BIND, - C2_WR_TYPE_FASTREG_NSMR = CCWR_NSMR_FASTREG, - C2_WR_TYPE_INV_STAG = CCWR_STAG_INVALIDATE, - C2_WR_TYPE_RECV = CCWR_RECV, - C2_WR_TYPE_NOP = CCWR_NOP, -}; - -struct c2_netaddr { - __be32 ip_addr; - __be32 netmask; - u32 mtu; -}; - -struct c2_route { - u32 ip_addr; /* 0 indicates the default route */ - u32 netmask; /* netmask associated with dst */ - u32 flags; - union { - u32 ipaddr; /* address of the nexthop interface */ - u8 enaddr[6]; - } nexthop; -}; - -/* - * A Scatter Gather Entry. - */ -struct c2_data_addr { - __be32 stag; - __be32 length; - __be64 to; -}; - -/* - * MR and MW flags used by the consumer, RI, and RNIC. - */ -enum c2_mm_flags { - MEM_REMOTE = 0x0001, /* allow mw binds with remote access. */ - MEM_VA_BASED = 0x0002, /* Not Zero-based */ - MEM_PBL_COMPLETE = 0x0004, /* PBL array is complete in this msg */ - MEM_LOCAL_READ = 0x0008, /* allow local reads */ - MEM_LOCAL_WRITE = 0x0010, /* allow local writes */ - MEM_REMOTE_READ = 0x0020, /* allow remote reads */ - MEM_REMOTE_WRITE = 0x0040, /* allow remote writes */ - MEM_WINDOW_BIND = 0x0080, /* binds allowed */ - MEM_SHARED = 0x0100, /* set if MR is shared */ - MEM_STAG_VALID = 0x0200 /* set if STAG is in valid state */ -}; - -/* - * CCIL API ACF flags defined in terms of the low level mem flags. - * This minimizes translation needed in the user API - */ -enum c2_acf { - C2_ACF_LOCAL_READ = MEM_LOCAL_READ, - C2_ACF_LOCAL_WRITE = MEM_LOCAL_WRITE, - C2_ACF_REMOTE_READ = MEM_REMOTE_READ, - C2_ACF_REMOTE_WRITE = MEM_REMOTE_WRITE, - C2_ACF_WINDOW_BIND = MEM_WINDOW_BIND -}; - -/* - * Image types of objects written to flash - */ -#define C2_FLASH_IMG_BITFILE 1 -#define C2_FLASH_IMG_OPTION_ROM 2 -#define C2_FLASH_IMG_VPD 3 - -/* - * to fix bug 1815 we define the max size allowable of the - * terminate message (per the IETF spec).Refer to the IETF - * protocol specification, section 12.1.6, page 64) - * The message is prefixed by 20 types of DDP info. - * - * Then the message has 6 bytes for the terminate control - * and DDP segment length info plus a DDP header (either - * 14 or 18 byts) plus 28 bytes for the RDMA header. - * Thus the max size in: - * 20 + (6 + 18 + 28) = 72 - */ -#define C2_MAX_TERMINATE_MESSAGE_SIZE (72) - -/* - * Build String Length. It must be the same as C2_BUILD_STR_LEN in ccil_api.h - */ -#define WR_BUILD_STR_LEN 64 - -/* - * WARNING: All of these structs need to align any 64bit types on - * 64 bit boundaries! 64bit types include u64 and u64. - */ - -/* - * Clustercore Work Request Header. Be sensitive to field layout - * and alignment. - */ -struct c2wr_hdr { - /* wqe_count is part of the cqe. It is put here so the - * adapter can write to it while the wr is pending without - * clobbering part of the wr. This word need not be dma'd - * from the host to adapter by libccil, but we copy it anyway - * to make the memcpy to the adapter better aligned. - */ - __be32 wqe_count; - - /* Put these fields next so that later 32- and 64-bit - * quantities are naturally aligned. - */ - u8 id; - u8 result; /* adapter -> host */ - u8 sge_count; /* host -> adapter */ - u8 flags; /* host -> adapter */ - - u64 context; -#ifdef CCMSGMAGIC - u32 magic; - u32 pad; -#endif -} __attribute__((packed)); - -/* - *------------------------ RNIC ------------------------ - */ - -/* - * WR_RNIC_OPEN - */ - -/* - * Flags for the RNIC WRs - */ -enum c2_rnic_flags { - RNIC_IRD_STATIC = 0x0001, - RNIC_ORD_STATIC = 0x0002, - RNIC_QP_STATIC = 0x0004, - RNIC_SRQ_SUPPORTED = 0x0008, - RNIC_PBL_BLOCK_MODE = 0x0010, - RNIC_SRQ_MODEL_ARRIVAL = 0x0020, - RNIC_CQ_OVF_DETECTED = 0x0040, - RNIC_PRIV_MODE = 0x0080 -}; - -struct c2wr_rnic_open_req { - struct c2wr_hdr hdr; - u64 user_context; - __be16 flags; /* See enum c2_rnic_flags */ - __be16 port_num; -} __attribute__((packed)); - -struct c2wr_rnic_open_rep { - struct c2wr_hdr hdr; - u32 rnic_handle; -} __attribute__((packed)); - -union c2wr_rnic_open { - struct c2wr_rnic_open_req req; - struct c2wr_rnic_open_rep rep; -} __attribute__((packed)); - -struct c2wr_rnic_query_req { - struct c2wr_hdr hdr; - u32 rnic_handle; -} __attribute__((packed)); - -/* - * WR_RNIC_QUERY - */ -struct c2wr_rnic_query_rep { - struct c2wr_hdr hdr; - u64 user_context; - __be32 vendor_id; - __be32 part_number; - __be32 hw_version; - __be32 fw_ver_major; - __be32 fw_ver_minor; - __be32 fw_ver_patch; - char fw_ver_build_str[WR_BUILD_STR_LEN]; - __be32 max_qps; - __be32 max_qp_depth; - u32 max_srq_depth; - u32 max_send_sgl_depth; - u32 max_rdma_sgl_depth; - __be32 max_cqs; - __be32 max_cq_depth; - u32 max_cq_event_handlers; - __be32 max_mrs; - u32 max_pbl_depth; - __be32 max_pds; - __be32 max_global_ird; - u32 max_global_ord; - __be32 max_qp_ird; - __be32 max_qp_ord; - u32 flags; - __be32 max_mws; - u32 pbe_range_low; - u32 pbe_range_high; - u32 max_srqs; - u32 page_size; -} __attribute__((packed)); - -union c2wr_rnic_query { - struct c2wr_rnic_query_req req; - struct c2wr_rnic_query_rep rep; -} __attribute__((packed)); - -/* - * WR_RNIC_GETCONFIG - */ - -struct c2wr_rnic_getconfig_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 option; /* see c2_getconfig_cmd_t */ - u64 reply_buf; - u32 reply_buf_len; -} __attribute__((packed)) ; - -struct c2wr_rnic_getconfig_rep { - struct c2wr_hdr hdr; - u32 option; /* see c2_getconfig_cmd_t */ - u32 count_len; /* length of the number of addresses configured */ -} __attribute__((packed)) ; - -union c2wr_rnic_getconfig { - struct c2wr_rnic_getconfig_req req; - struct c2wr_rnic_getconfig_rep rep; -} __attribute__((packed)) ; - -/* - * WR_RNIC_SETCONFIG - */ -struct c2wr_rnic_setconfig_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - __be32 option; /* See c2_setconfig_cmd_t */ - /* variable data and pad. See c2_netaddr and c2_route */ - u8 data[0]; -} __attribute__((packed)) ; - -struct c2wr_rnic_setconfig_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_rnic_setconfig { - struct c2wr_rnic_setconfig_req req; - struct c2wr_rnic_setconfig_rep rep; -} __attribute__((packed)) ; - -/* - * WR_RNIC_CLOSE - */ -struct c2wr_rnic_close_req { - struct c2wr_hdr hdr; - u32 rnic_handle; -} __attribute__((packed)) ; - -struct c2wr_rnic_close_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_rnic_close { - struct c2wr_rnic_close_req req; - struct c2wr_rnic_close_rep rep; -} __attribute__((packed)) ; - -/* - *------------------------ CQ ------------------------ - */ -struct c2wr_cq_create_req { - struct c2wr_hdr hdr; - __be64 shared_ht; - u64 user_context; - __be64 msg_pool; - u32 rnic_handle; - __be32 msg_size; - __be32 depth; -} __attribute__((packed)) ; - -struct c2wr_cq_create_rep { - struct c2wr_hdr hdr; - __be32 mq_index; - __be32 adapter_shared; - u32 cq_handle; -} __attribute__((packed)) ; - -union c2wr_cq_create { - struct c2wr_cq_create_req req; - struct c2wr_cq_create_rep rep; -} __attribute__((packed)) ; - -struct c2wr_cq_modify_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 cq_handle; - u32 new_depth; - u64 new_msg_pool; -} __attribute__((packed)) ; - -struct c2wr_cq_modify_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_cq_modify { - struct c2wr_cq_modify_req req; - struct c2wr_cq_modify_rep rep; -} __attribute__((packed)) ; - -struct c2wr_cq_destroy_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 cq_handle; -} __attribute__((packed)) ; - -struct c2wr_cq_destroy_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_cq_destroy { - struct c2wr_cq_destroy_req req; - struct c2wr_cq_destroy_rep rep; -} __attribute__((packed)) ; - -/* - *------------------------ PD ------------------------ - */ -struct c2wr_pd_alloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_pd_alloc_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_pd_alloc { - struct c2wr_pd_alloc_req req; - struct c2wr_pd_alloc_rep rep; -} __attribute__((packed)) ; - -struct c2wr_pd_dealloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_pd_dealloc_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_pd_dealloc { - struct c2wr_pd_dealloc_req req; - struct c2wr_pd_dealloc_rep rep; -} __attribute__((packed)) ; - -/* - *------------------------ SRQ ------------------------ - */ -struct c2wr_srq_create_req { - struct c2wr_hdr hdr; - u64 shared_ht; - u64 user_context; - u32 rnic_handle; - u32 srq_depth; - u32 srq_limit; - u32 sgl_depth; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_srq_create_rep { - struct c2wr_hdr hdr; - u32 srq_depth; - u32 sgl_depth; - u32 msg_size; - u32 mq_index; - u32 mq_start; - u32 srq_handle; -} __attribute__((packed)) ; - -union c2wr_srq_create { - struct c2wr_srq_create_req req; - struct c2wr_srq_create_rep rep; -} __attribute__((packed)) ; - -struct c2wr_srq_destroy_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 srq_handle; -} __attribute__((packed)) ; - -struct c2wr_srq_destroy_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_srq_destroy { - struct c2wr_srq_destroy_req req; - struct c2wr_srq_destroy_rep rep; -} __attribute__((packed)) ; - -/* - *------------------------ QP ------------------------ - */ -enum c2wr_qp_flags { - QP_RDMA_READ = 0x00000001, /* RDMA read enabled? */ - QP_RDMA_WRITE = 0x00000002, /* RDMA write enabled? */ - QP_MW_BIND = 0x00000004, /* MWs enabled */ - QP_ZERO_STAG = 0x00000008, /* enabled? */ - QP_REMOTE_TERMINATION = 0x00000010, /* remote end terminated */ - QP_RDMA_READ_RESPONSE = 0x00000020 /* Remote RDMA read */ - /* enabled? */ -}; - -struct c2wr_qp_create_req { - struct c2wr_hdr hdr; - __be64 shared_sq_ht; - __be64 shared_rq_ht; - u64 user_context; - u32 rnic_handle; - u32 sq_cq_handle; - u32 rq_cq_handle; - __be32 sq_depth; - __be32 rq_depth; - u32 srq_handle; - u32 srq_limit; - __be32 flags; /* see enum c2wr_qp_flags */ - __be32 send_sgl_depth; - __be32 recv_sgl_depth; - __be32 rdma_write_sgl_depth; - __be32 ord; - __be32 ird; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_qp_create_rep { - struct c2wr_hdr hdr; - __be32 sq_depth; - __be32 rq_depth; - u32 send_sgl_depth; - u32 recv_sgl_depth; - u32 rdma_write_sgl_depth; - u32 ord; - u32 ird; - __be32 sq_msg_size; - __be32 sq_mq_index; - __be32 sq_mq_start; - __be32 rq_msg_size; - __be32 rq_mq_index; - __be32 rq_mq_start; - u32 qp_handle; -} __attribute__((packed)) ; - -union c2wr_qp_create { - struct c2wr_qp_create_req req; - struct c2wr_qp_create_rep rep; -} __attribute__((packed)) ; - -struct c2wr_qp_query_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 qp_handle; -} __attribute__((packed)) ; - -struct c2wr_qp_query_rep { - struct c2wr_hdr hdr; - u64 user_context; - u32 rnic_handle; - u32 sq_depth; - u32 rq_depth; - u32 send_sgl_depth; - u32 rdma_write_sgl_depth; - u32 recv_sgl_depth; - u32 ord; - u32 ird; - u16 qp_state; - u16 flags; /* see c2wr_qp_flags_t */ - u32 qp_id; - u32 local_addr; - u32 remote_addr; - u16 local_port; - u16 remote_port; - u32 terminate_msg_length; /* 0 if not present */ - u8 data[0]; - /* Terminate Message in-line here. */ -} __attribute__((packed)) ; - -union c2wr_qp_query { - struct c2wr_qp_query_req req; - struct c2wr_qp_query_rep rep; -} __attribute__((packed)) ; - -struct c2wr_qp_modify_req { - struct c2wr_hdr hdr; - u64 stream_msg; - u32 stream_msg_length; - u32 rnic_handle; - u32 qp_handle; - __be32 next_qp_state; - __be32 ord; - __be32 ird; - __be32 sq_depth; - __be32 rq_depth; - u32 llp_ep_handle; -} __attribute__((packed)) ; - -struct c2wr_qp_modify_rep { - struct c2wr_hdr hdr; - u32 ord; - u32 ird; - u32 sq_depth; - u32 rq_depth; - u32 sq_msg_size; - u32 sq_mq_index; - u32 sq_mq_start; - u32 rq_msg_size; - u32 rq_mq_index; - u32 rq_mq_start; -} __attribute__((packed)) ; - -union c2wr_qp_modify { - struct c2wr_qp_modify_req req; - struct c2wr_qp_modify_rep rep; -} __attribute__((packed)) ; - -struct c2wr_qp_destroy_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 qp_handle; -} __attribute__((packed)) ; - -struct c2wr_qp_destroy_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_qp_destroy { - struct c2wr_qp_destroy_req req; - struct c2wr_qp_destroy_rep rep; -} __attribute__((packed)) ; - -/* - * The CCWR_QP_CONNECT msg is posted on the verbs request queue. It can - * only be posted when a QP is in IDLE state. After the connect request is - * submitted to the LLP, the adapter moves the QP to CONNECT_PENDING state. - * No synchronous reply from adapter to this WR. The results of - * connection are passed back in an async event CCAE_ACTIVE_CONNECT_RESULTS - * See c2wr_ae_active_connect_results_t - */ -struct c2wr_qp_connect_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 qp_handle; - __be32 remote_addr; - __be16 remote_port; - u16 pad; - __be32 private_data_length; - u8 private_data[0]; /* Private data in-line. */ -} __attribute__((packed)) ; - -struct c2wr_qp_connect { - struct c2wr_qp_connect_req req; - /* no synchronous reply. */ -} __attribute__((packed)) ; - - -/* - *------------------------ MM ------------------------ - */ - -struct c2wr_nsmr_stag_alloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 pbl_depth; - u32 pd_id; - u32 flags; -} __attribute__((packed)) ; - -struct c2wr_nsmr_stag_alloc_rep { - struct c2wr_hdr hdr; - u32 pbl_depth; - u32 stag_index; -} __attribute__((packed)) ; - -union c2wr_nsmr_stag_alloc { - struct c2wr_nsmr_stag_alloc_req req; - struct c2wr_nsmr_stag_alloc_rep rep; -} __attribute__((packed)) ; - -struct c2wr_nsmr_register_req { - struct c2wr_hdr hdr; - __be64 va; - u32 rnic_handle; - __be16 flags; - u8 stag_key; - u8 pad; - u32 pd_id; - __be32 pbl_depth; - __be32 pbe_size; - __be32 fbo; - __be32 length; - __be32 addrs_length; - /* array of paddrs (must be aligned on a 64bit boundary) */ - __be64 paddrs[0]; -} __attribute__((packed)) ; - -struct c2wr_nsmr_register_rep { - struct c2wr_hdr hdr; - u32 pbl_depth; - __be32 stag_index; -} __attribute__((packed)) ; - -union c2wr_nsmr_register { - struct c2wr_nsmr_register_req req; - struct c2wr_nsmr_register_rep rep; -} __attribute__((packed)) ; - -struct c2wr_nsmr_pbl_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - __be32 flags; - __be32 stag_index; - __be32 addrs_length; - /* array of paddrs (must be aligned on a 64bit boundary) */ - __be64 paddrs[0]; -} __attribute__((packed)) ; - -struct c2wr_nsmr_pbl_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_nsmr_pbl { - struct c2wr_nsmr_pbl_req req; - struct c2wr_nsmr_pbl_rep rep; -} __attribute__((packed)) ; - -struct c2wr_mr_query_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 stag_index; -} __attribute__((packed)) ; - -struct c2wr_mr_query_rep { - struct c2wr_hdr hdr; - u8 stag_key; - u8 pad[3]; - u32 pd_id; - u32 flags; - u32 pbl_depth; -} __attribute__((packed)) ; - -union c2wr_mr_query { - struct c2wr_mr_query_req req; - struct c2wr_mr_query_rep rep; -} __attribute__((packed)) ; - -struct c2wr_mw_query_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 stag_index; -} __attribute__((packed)) ; - -struct c2wr_mw_query_rep { - struct c2wr_hdr hdr; - u8 stag_key; - u8 pad[3]; - u32 pd_id; - u32 flags; -} __attribute__((packed)) ; - -union c2wr_mw_query { - struct c2wr_mw_query_req req; - struct c2wr_mw_query_rep rep; -} __attribute__((packed)) ; - - -struct c2wr_stag_dealloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - __be32 stag_index; -} __attribute__((packed)) ; - -struct c2wr_stag_dealloc_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)) ; - -union c2wr_stag_dealloc { - struct c2wr_stag_dealloc_req req; - struct c2wr_stag_dealloc_rep rep; -} __attribute__((packed)) ; - -struct c2wr_nsmr_reregister_req { - struct c2wr_hdr hdr; - u64 va; - u32 rnic_handle; - u16 flags; - u8 stag_key; - u8 pad; - u32 stag_index; - u32 pd_id; - u32 pbl_depth; - u32 pbe_size; - u32 fbo; - u32 length; - u32 addrs_length; - u32 pad1; - /* array of paddrs (must be aligned on a 64bit boundary) */ - u64 paddrs[0]; -} __attribute__((packed)) ; - -struct c2wr_nsmr_reregister_rep { - struct c2wr_hdr hdr; - u32 pbl_depth; - u32 stag_index; -} __attribute__((packed)) ; - -union c2wr_nsmr_reregister { - struct c2wr_nsmr_reregister_req req; - struct c2wr_nsmr_reregister_rep rep; -} __attribute__((packed)) ; - -struct c2wr_smr_register_req { - struct c2wr_hdr hdr; - u64 va; - u32 rnic_handle; - u16 flags; - u8 stag_key; - u8 pad; - u32 stag_index; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_smr_register_rep { - struct c2wr_hdr hdr; - u32 stag_index; -} __attribute__((packed)) ; - -union c2wr_smr_register { - struct c2wr_smr_register_req req; - struct c2wr_smr_register_rep rep; -} __attribute__((packed)) ; - -struct c2wr_mw_alloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 pd_id; -} __attribute__((packed)) ; - -struct c2wr_mw_alloc_rep { - struct c2wr_hdr hdr; - u32 stag_index; -} __attribute__((packed)) ; - -union c2wr_mw_alloc { - struct c2wr_mw_alloc_req req; - struct c2wr_mw_alloc_rep rep; -} __attribute__((packed)) ; - -/* - *------------------------ WRs ----------------------- - */ - -struct c2wr_user_hdr { - struct c2wr_hdr hdr; /* Has status and WR Type */ -} __attribute__((packed)) ; - -enum c2_qp_state { - C2_QP_STATE_IDLE = 0x01, - C2_QP_STATE_CONNECTING = 0x02, - C2_QP_STATE_RTS = 0x04, - C2_QP_STATE_CLOSING = 0x08, - C2_QP_STATE_TERMINATE = 0x10, - C2_QP_STATE_ERROR = 0x20, -}; - -/* Completion queue entry. */ -struct c2wr_ce { - struct c2wr_hdr hdr; /* Has status and WR Type */ - u64 qp_user_context; /* c2_user_qp_t * */ - u32 qp_state; /* Current QP State */ - u32 handle; /* QPID or EP Handle */ - __be32 bytes_rcvd; /* valid for RECV WCs */ - u32 stag; -} __attribute__((packed)) ; - - -/* - * Flags used for all post-sq WRs. These must fit in the flags - * field of the struct c2wr_hdr (eight bits). - */ -enum { - SQ_SIGNALED = 0x01, - SQ_READ_FENCE = 0x02, - SQ_FENCE = 0x04, -}; - -/* - * Common fields for all post-sq WRs. Namely the standard header and a - * secondary header with fields common to all post-sq WRs. - */ -struct c2_sq_hdr { - struct c2wr_user_hdr user_hdr; -} __attribute__((packed)); - -/* - * Same as above but for post-rq WRs. - */ -struct c2_rq_hdr { - struct c2wr_user_hdr user_hdr; -} __attribute__((packed)); - -/* - * use the same struct for all sends. - */ -struct c2wr_send_req { - struct c2_sq_hdr sq_hdr; - __be32 sge_len; - __be32 remote_stag; - u8 data[0]; /* SGE array */ -} __attribute__((packed)); - -union c2wr_send { - struct c2wr_send_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_rdma_write_req { - struct c2_sq_hdr sq_hdr; - __be64 remote_to; - __be32 remote_stag; - __be32 sge_len; - u8 data[0]; /* SGE array */ -} __attribute__((packed)); - -union c2wr_rdma_write { - struct c2wr_rdma_write_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_rdma_read_req { - struct c2_sq_hdr sq_hdr; - __be64 local_to; - __be64 remote_to; - __be32 local_stag; - __be32 remote_stag; - __be32 length; -} __attribute__((packed)); - -union c2wr_rdma_read { - struct c2wr_rdma_read_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_mw_bind_req { - struct c2_sq_hdr sq_hdr; - u64 va; - u8 stag_key; - u8 pad[3]; - u32 mw_stag_index; - u32 mr_stag_index; - u32 length; - u32 flags; -} __attribute__((packed)); - -union c2wr_mw_bind { - struct c2wr_mw_bind_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_nsmr_fastreg_req { - struct c2_sq_hdr sq_hdr; - u64 va; - u8 stag_key; - u8 pad[3]; - u32 stag_index; - u32 pbe_size; - u32 fbo; - u32 length; - u32 addrs_length; - /* array of paddrs (must be aligned on a 64bit boundary) */ - u64 paddrs[0]; -} __attribute__((packed)); - -union c2wr_nsmr_fastreg { - struct c2wr_nsmr_fastreg_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_stag_invalidate_req { - struct c2_sq_hdr sq_hdr; - u8 stag_key; - u8 pad[3]; - u32 stag_index; -} __attribute__((packed)); - -union c2wr_stag_invalidate { - struct c2wr_stag_invalidate_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -union c2wr_sqwr { - struct c2_sq_hdr sq_hdr; - struct c2wr_send_req send; - struct c2wr_send_req send_se; - struct c2wr_send_req send_inv; - struct c2wr_send_req send_se_inv; - struct c2wr_rdma_write_req rdma_write; - struct c2wr_rdma_read_req rdma_read; - struct c2wr_mw_bind_req mw_bind; - struct c2wr_nsmr_fastreg_req nsmr_fastreg; - struct c2wr_stag_invalidate_req stag_inv; -} __attribute__((packed)); - - -/* - * RQ WRs - */ -struct c2wr_rqwr { - struct c2_rq_hdr rq_hdr; - u8 data[0]; /* array of SGEs */ -} __attribute__((packed)); - -union c2wr_recv { - struct c2wr_rqwr req; - struct c2wr_ce rep; -} __attribute__((packed)); - -/* - * All AEs start with this header. Most AEs only need to convey the - * information in the header. Some, like LLP connection events, need - * more info. The union typdef c2wr_ae_t has all the possible AEs. - * - * hdr.context is the user_context from the rnic_open WR. NULL If this - * is not affiliated with an rnic - * - * hdr.id is the AE identifier (eg; CCAE_REMOTE_SHUTDOWN, - * CCAE_LLP_CLOSE_COMPLETE) - * - * resource_type is one of: C2_RES_IND_QP, C2_RES_IND_CQ, C2_RES_IND_SRQ - * - * user_context is the context passed down when the host created the resource. - */ -struct c2wr_ae_hdr { - struct c2wr_hdr hdr; - u64 user_context; /* user context for this res. */ - __be32 resource_type; /* see enum c2_resource_indicator */ - __be32 resource; /* handle for resource */ - __be32 qp_state; /* current QP State */ -} __attribute__((packed)); - -/* - * After submitting the CCAE_ACTIVE_CONNECT_RESULTS message on the AEQ, - * the adapter moves the QP into RTS state - */ -struct c2wr_ae_active_connect_results { - struct c2wr_ae_hdr ae_hdr; - __be32 laddr; - __be32 raddr; - __be16 lport; - __be16 rport; - __be32 private_data_length; - u8 private_data[0]; /* data is in-line in the msg. */ -} __attribute__((packed)); - -/* - * When connections are established by the stack (and the private data - * MPA frame is received), the adapter will generate an event to the host. - * The details of the connection, any private data, and the new connection - * request handle is passed up via the CCAE_CONNECTION_REQUEST msg on the - * AE queue: - */ -struct c2wr_ae_connection_request { - struct c2wr_ae_hdr ae_hdr; - u32 cr_handle; /* connreq handle (sock ptr) */ - __be32 laddr; - __be32 raddr; - __be16 lport; - __be16 rport; - __be32 private_data_length; - u8 private_data[0]; /* data is in-line in the msg. */ -} __attribute__((packed)); - -union c2wr_ae { - struct c2wr_ae_hdr ae_generic; - struct c2wr_ae_active_connect_results ae_active_connect_results; - struct c2wr_ae_connection_request ae_connection_request; -} __attribute__((packed)); - -struct c2wr_init_req { - struct c2wr_hdr hdr; - __be64 hint_count; - __be64 q0_host_shared; - __be64 q1_host_shared; - __be64 q1_host_msg_pool; - __be64 q2_host_shared; - __be64 q2_host_msg_pool; -} __attribute__((packed)); - -struct c2wr_init_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)); - -union c2wr_init { - struct c2wr_init_req req; - struct c2wr_init_rep rep; -} __attribute__((packed)); - -/* - * For upgrading flash. - */ - -struct c2wr_flash_init_req { - struct c2wr_hdr hdr; - u32 rnic_handle; -} __attribute__((packed)); - -struct c2wr_flash_init_rep { - struct c2wr_hdr hdr; - u32 adapter_flash_buf_offset; - u32 adapter_flash_len; -} __attribute__((packed)); - -union c2wr_flash_init { - struct c2wr_flash_init_req req; - struct c2wr_flash_init_rep rep; -} __attribute__((packed)); - -struct c2wr_flash_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 len; -} __attribute__((packed)); - -struct c2wr_flash_rep { - struct c2wr_hdr hdr; - u32 status; -} __attribute__((packed)); - -union c2wr_flash { - struct c2wr_flash_req req; - struct c2wr_flash_rep rep; -} __attribute__((packed)); - -struct c2wr_buf_alloc_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 size; -} __attribute__((packed)); - -struct c2wr_buf_alloc_rep { - struct c2wr_hdr hdr; - u32 offset; /* 0 if mem not available */ - u32 size; /* 0 if mem not available */ -} __attribute__((packed)); - -union c2wr_buf_alloc { - struct c2wr_buf_alloc_req req; - struct c2wr_buf_alloc_rep rep; -} __attribute__((packed)); - -struct c2wr_buf_free_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 offset; /* Must match value from alloc */ - u32 size; /* Must match value from alloc */ -} __attribute__((packed)); - -struct c2wr_buf_free_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)); - -union c2wr_buf_free { - struct c2wr_buf_free_req req; - struct c2wr_ce rep; -} __attribute__((packed)); - -struct c2wr_flash_write_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 offset; - u32 size; - u32 type; - u32 flags; -} __attribute__((packed)); - -struct c2wr_flash_write_rep { - struct c2wr_hdr hdr; - u32 status; -} __attribute__((packed)); - -union c2wr_flash_write { - struct c2wr_flash_write_req req; - struct c2wr_flash_write_rep rep; -} __attribute__((packed)); - -/* - * Messages for LLP connection setup. - */ - -/* - * Listen Request. This allocates a listening endpoint to allow passive - * connection setup. Newly established LLP connections are passed up - * via an AE. See c2wr_ae_connection_request_t - */ -struct c2wr_ep_listen_create_req { - struct c2wr_hdr hdr; - u64 user_context; /* returned in AEs. */ - u32 rnic_handle; - __be32 local_addr; /* local addr, or 0 */ - __be16 local_port; /* 0 means "pick one" */ - u16 pad; - __be32 backlog; /* tradional tcp listen bl */ -} __attribute__((packed)); - -struct c2wr_ep_listen_create_rep { - struct c2wr_hdr hdr; - u32 ep_handle; /* handle to new listening ep */ - u16 local_port; /* resulting port... */ - u16 pad; -} __attribute__((packed)); - -union c2wr_ep_listen_create { - struct c2wr_ep_listen_create_req req; - struct c2wr_ep_listen_create_rep rep; -} __attribute__((packed)); - -struct c2wr_ep_listen_destroy_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 ep_handle; -} __attribute__((packed)); - -struct c2wr_ep_listen_destroy_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)); - -union c2wr_ep_listen_destroy { - struct c2wr_ep_listen_destroy_req req; - struct c2wr_ep_listen_destroy_rep rep; -} __attribute__((packed)); - -struct c2wr_ep_query_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 ep_handle; -} __attribute__((packed)); - -struct c2wr_ep_query_rep { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 local_addr; - u32 remote_addr; - u16 local_port; - u16 remote_port; -} __attribute__((packed)); - -union c2wr_ep_query { - struct c2wr_ep_query_req req; - struct c2wr_ep_query_rep rep; -} __attribute__((packed)); - - -/* - * The host passes this down to indicate acceptance of a pending iWARP - * connection. The cr_handle was obtained from the CONNECTION_REQUEST - * AE passed up by the adapter. See c2wr_ae_connection_request_t. - */ -struct c2wr_cr_accept_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 qp_handle; /* QP to bind to this LLP conn */ - u32 ep_handle; /* LLP handle to accept */ - __be32 private_data_length; - u8 private_data[0]; /* data in-line in msg. */ -} __attribute__((packed)); - -/* - * adapter sends reply when private data is successfully submitted to - * the LLP. - */ -struct c2wr_cr_accept_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)); - -union c2wr_cr_accept { - struct c2wr_cr_accept_req req; - struct c2wr_cr_accept_rep rep; -} __attribute__((packed)); - -/* - * The host sends this down if a given iWARP connection request was - * rejected by the consumer. The cr_handle was obtained from a - * previous c2wr_ae_connection_request_t AE sent by the adapter. - */ -struct c2wr_cr_reject_req { - struct c2wr_hdr hdr; - u32 rnic_handle; - u32 ep_handle; /* LLP handle to reject */ -} __attribute__((packed)); - -/* - * Dunno if this is needed, but we'll add it for now. The adapter will - * send the reject_reply after the LLP endpoint has been destroyed. - */ -struct c2wr_cr_reject_rep { - struct c2wr_hdr hdr; -} __attribute__((packed)); - -union c2wr_cr_reject { - struct c2wr_cr_reject_req req; - struct c2wr_cr_reject_rep rep; -} __attribute__((packed)); - -/* - * console command. Used to implement a debug console over the verbs - * request and reply queues. - */ - -/* - * Console request message. It contains: - * - message hdr with id = CCWR_CONSOLE - * - the physaddr/len of host memory to be used for the reply. - * - the command string. eg: "netstat -s" or "zoneinfo" - */ -struct c2wr_console_req { - struct c2wr_hdr hdr; /* id = CCWR_CONSOLE */ - u64 reply_buf; /* pinned host buf for reply */ - u32 reply_buf_len; /* length of reply buffer */ - u8 command[0]; /* NUL terminated ascii string */ - /* containing the command req */ -} __attribute__((packed)); - -/* - * flags used in the console reply. - */ -enum c2_console_flags { - CONS_REPLY_TRUNCATED = 0x00000001 /* reply was truncated */ -} __attribute__((packed)); - -/* - * Console reply message. - * hdr.result contains the c2_status_t error if the reply was _not_ generated, - * or C2_OK if the reply was generated. - */ -struct c2wr_console_rep { - struct c2wr_hdr hdr; /* id = CCWR_CONSOLE */ - u32 flags; -} __attribute__((packed)); - -union c2wr_console { - struct c2wr_console_req req; - struct c2wr_console_rep rep; -} __attribute__((packed)); - - -/* - * Giant union with all WRs. Makes life easier... - */ -union c2wr { - struct c2wr_hdr hdr; - struct c2wr_user_hdr user_hdr; - union c2wr_rnic_open rnic_open; - union c2wr_rnic_query rnic_query; - union c2wr_rnic_getconfig rnic_getconfig; - union c2wr_rnic_setconfig rnic_setconfig; - union c2wr_rnic_close rnic_close; - union c2wr_cq_create cq_create; - union c2wr_cq_modify cq_modify; - union c2wr_cq_destroy cq_destroy; - union c2wr_pd_alloc pd_alloc; - union c2wr_pd_dealloc pd_dealloc; - union c2wr_srq_create srq_create; - union c2wr_srq_destroy srq_destroy; - union c2wr_qp_create qp_create; - union c2wr_qp_query qp_query; - union c2wr_qp_modify qp_modify; - union c2wr_qp_destroy qp_destroy; - struct c2wr_qp_connect qp_connect; - union c2wr_nsmr_stag_alloc nsmr_stag_alloc; - union c2wr_nsmr_register nsmr_register; - union c2wr_nsmr_pbl nsmr_pbl; - union c2wr_mr_query mr_query; - union c2wr_mw_query mw_query; - union c2wr_stag_dealloc stag_dealloc; - union c2wr_sqwr sqwr; - struct c2wr_rqwr rqwr; - struct c2wr_ce ce; - union c2wr_ae ae; - union c2wr_init init; - union c2wr_ep_listen_create ep_listen_create; - union c2wr_ep_listen_destroy ep_listen_destroy; - union c2wr_cr_accept cr_accept; - union c2wr_cr_reject cr_reject; - union c2wr_console console; - union c2wr_flash_init flash_init; - union c2wr_flash flash; - union c2wr_buf_alloc buf_alloc; - union c2wr_buf_free buf_free; - union c2wr_flash_write flash_write; -} __attribute__((packed)); - - -/* - * Accessors for the wr fields that are packed together tightly to - * reduce the wr message size. The wr arguments are void* so that - * either a struct c2wr*, a struct c2wr_hdr*, or a pointer to any of the types - * in the struct c2wr union can be passed in. - */ -static __inline__ u8 c2_wr_get_id(void *wr) -{ - return ((struct c2wr_hdr *) wr)->id; -} -static __inline__ void c2_wr_set_id(void *wr, u8 id) -{ - ((struct c2wr_hdr *) wr)->id = id; -} -static __inline__ u8 c2_wr_get_result(void *wr) -{ - return ((struct c2wr_hdr *) wr)->result; -} -static __inline__ void c2_wr_set_result(void *wr, u8 result) -{ - ((struct c2wr_hdr *) wr)->result = result; -} -static __inline__ u8 c2_wr_get_flags(void *wr) -{ - return ((struct c2wr_hdr *) wr)->flags; -} -static __inline__ void c2_wr_set_flags(void *wr, u8 flags) -{ - ((struct c2wr_hdr *) wr)->flags = flags; -} -static __inline__ u8 c2_wr_get_sge_count(void *wr) -{ - return ((struct c2wr_hdr *) wr)->sge_count; -} -static __inline__ void c2_wr_set_sge_count(void *wr, u8 sge_count) -{ - ((struct c2wr_hdr *) wr)->sge_count = sge_count; -} -static __inline__ __be32 c2_wr_get_wqe_count(void *wr) -{ - return ((struct c2wr_hdr *) wr)->wqe_count; -} -static __inline__ void c2_wr_set_wqe_count(void *wr, u32 wqe_count) -{ - ((struct c2wr_hdr *) wr)->wqe_count = wqe_count; -} - -#endif /* _C2_WR_H_ */ -- cgit v1.2.3 From e581d111dad3781266ae1abe1d2848e69406deb5 Mon Sep 17 00:00:00 2001 From: Doug Ledford Date: Wed, 3 Feb 2016 11:08:53 -0500 Subject: staging/rdma: remove deprecated ehca driver This driver was moved to staging for eventual deletion. Time to complete that task. Signed-off-by: Doug Ledford --- drivers/staging/rdma/Kconfig | 2 - drivers/staging/rdma/Makefile | 1 - drivers/staging/rdma/ehca/Kconfig | 10 - drivers/staging/rdma/ehca/Makefile | 16 - drivers/staging/rdma/ehca/TODO | 4 - drivers/staging/rdma/ehca/ehca_av.c | 279 --- drivers/staging/rdma/ehca/ehca_classes.h | 481 ----- drivers/staging/rdma/ehca/ehca_classes_pSeries.h | 208 -- drivers/staging/rdma/ehca/ehca_cq.c | 397 ---- drivers/staging/rdma/ehca/ehca_eq.c | 189 -- drivers/staging/rdma/ehca/ehca_hca.c | 414 ---- drivers/staging/rdma/ehca/ehca_irq.c | 870 --------- drivers/staging/rdma/ehca/ehca_irq.h | 77 - drivers/staging/rdma/ehca/ehca_iverbs.h | 202 -- drivers/staging/rdma/ehca/ehca_main.c | 1118 ----------- drivers/staging/rdma/ehca/ehca_mcast.c | 131 -- drivers/staging/rdma/ehca/ehca_mrmw.c | 2202 --------------------- drivers/staging/rdma/ehca/ehca_mrmw.h | 127 -- drivers/staging/rdma/ehca/ehca_pd.c | 123 -- drivers/staging/rdma/ehca/ehca_qes.h | 260 --- drivers/staging/rdma/ehca/ehca_qp.c | 2256 ---------------------- drivers/staging/rdma/ehca/ehca_reqs.c | 953 --------- drivers/staging/rdma/ehca/ehca_sqp.c | 245 --- drivers/staging/rdma/ehca/ehca_tools.h | 155 -- drivers/staging/rdma/ehca/ehca_uverbs.c | 309 --- drivers/staging/rdma/ehca/hcp_if.c | 949 --------- drivers/staging/rdma/ehca/hcp_if.h | 265 --- drivers/staging/rdma/ehca/hcp_phyp.c | 82 - drivers/staging/rdma/ehca/hcp_phyp.h | 90 - drivers/staging/rdma/ehca/hipz_fns.h | 68 - drivers/staging/rdma/ehca/hipz_fns_core.h | 100 - drivers/staging/rdma/ehca/hipz_hw.h | 414 ---- drivers/staging/rdma/ehca/ipz_pt_fn.c | 289 --- drivers/staging/rdma/ehca/ipz_pt_fn.h | 289 --- 34 files changed, 13575 deletions(-) delete mode 100644 drivers/staging/rdma/ehca/Kconfig delete mode 100644 drivers/staging/rdma/ehca/Makefile delete mode 100644 drivers/staging/rdma/ehca/TODO delete mode 100644 drivers/staging/rdma/ehca/ehca_av.c delete mode 100644 drivers/staging/rdma/ehca/ehca_classes.h delete mode 100644 drivers/staging/rdma/ehca/ehca_classes_pSeries.h delete mode 100644 drivers/staging/rdma/ehca/ehca_cq.c delete mode 100644 drivers/staging/rdma/ehca/ehca_eq.c delete mode 100644 drivers/staging/rdma/ehca/ehca_hca.c delete mode 100644 drivers/staging/rdma/ehca/ehca_irq.c delete mode 100644 drivers/staging/rdma/ehca/ehca_irq.h delete mode 100644 drivers/staging/rdma/ehca/ehca_iverbs.h delete mode 100644 drivers/staging/rdma/ehca/ehca_main.c delete mode 100644 drivers/staging/rdma/ehca/ehca_mcast.c delete mode 100644 drivers/staging/rdma/ehca/ehca_mrmw.c delete mode 100644 drivers/staging/rdma/ehca/ehca_mrmw.h delete mode 100644 drivers/staging/rdma/ehca/ehca_pd.c delete mode 100644 drivers/staging/rdma/ehca/ehca_qes.h delete mode 100644 drivers/staging/rdma/ehca/ehca_qp.c delete mode 100644 drivers/staging/rdma/ehca/ehca_reqs.c delete mode 100644 drivers/staging/rdma/ehca/ehca_sqp.c delete mode 100644 drivers/staging/rdma/ehca/ehca_tools.h delete mode 100644 drivers/staging/rdma/ehca/ehca_uverbs.c delete mode 100644 drivers/staging/rdma/ehca/hcp_if.c delete mode 100644 drivers/staging/rdma/ehca/hcp_if.h delete mode 100644 drivers/staging/rdma/ehca/hcp_phyp.c delete mode 100644 drivers/staging/rdma/ehca/hcp_phyp.h delete mode 100644 drivers/staging/rdma/ehca/hipz_fns.h delete mode 100644 drivers/staging/rdma/ehca/hipz_fns_core.h delete mode 100644 drivers/staging/rdma/ehca/hipz_hw.h delete mode 100644 drivers/staging/rdma/ehca/ipz_pt_fn.c delete mode 100644 drivers/staging/rdma/ehca/ipz_pt_fn.h (limited to 'drivers') diff --git a/drivers/staging/rdma/Kconfig b/drivers/staging/rdma/Kconfig index 1624bc43e304..8a0be6961d7a 100644 --- a/drivers/staging/rdma/Kconfig +++ b/drivers/staging/rdma/Kconfig @@ -22,8 +22,6 @@ menuconfig STAGING_RDMA # Please keep entries in alphabetic order if STAGING_RDMA -source "drivers/staging/rdma/ehca/Kconfig" - source "drivers/staging/rdma/hfi1/Kconfig" source "drivers/staging/rdma/ipath/Kconfig" diff --git a/drivers/staging/rdma/Makefile b/drivers/staging/rdma/Makefile index 2217d6778669..08e1919c819e 100644 --- a/drivers/staging/rdma/Makefile +++ b/drivers/staging/rdma/Makefile @@ -1,4 +1,3 @@ # Entries for RDMA_STAGING tree -obj-$(CONFIG_INFINIBAND_EHCA) += ehca/ obj-$(CONFIG_INFINIBAND_HFI1) += hfi1/ obj-$(CONFIG_INFINIBAND_IPATH) += ipath/ diff --git a/drivers/staging/rdma/ehca/Kconfig b/drivers/staging/rdma/ehca/Kconfig deleted file mode 100644 index 3fadd2ad6426..000000000000 --- a/drivers/staging/rdma/ehca/Kconfig +++ /dev/null @@ -1,10 +0,0 @@ -config INFINIBAND_EHCA - tristate "eHCA support" - depends on IBMEBUS - ---help--- - This driver supports the deprecated IBM pSeries eHCA InfiniBand - adapter. - - To compile the driver as a module, choose M here. The module - will be called ib_ehca. - diff --git a/drivers/staging/rdma/ehca/Makefile b/drivers/staging/rdma/ehca/Makefile deleted file mode 100644 index 74d284e46a40..000000000000 --- a/drivers/staging/rdma/ehca/Makefile +++ /dev/null @@ -1,16 +0,0 @@ -# Authors: Heiko J Schick -# Christoph Raisch -# Joachim Fenkes -# -# Copyright (c) 2005 IBM Corporation -# -# All rights reserved. -# -# This source code is distributed under a dual license of GPL v2.0 and OpenIB BSD. - -obj-$(CONFIG_INFINIBAND_EHCA) += ib_ehca.o - -ib_ehca-objs = ehca_main.o ehca_hca.o ehca_mcast.o ehca_pd.o ehca_av.o ehca_eq.o \ - ehca_cq.o ehca_qp.o ehca_sqp.o ehca_mrmw.o ehca_reqs.o ehca_irq.o \ - ehca_uverbs.o ipz_pt_fn.o hcp_if.o hcp_phyp.o - diff --git a/drivers/staging/rdma/ehca/TODO b/drivers/staging/rdma/ehca/TODO deleted file mode 100644 index 199a4a600142..000000000000 --- a/drivers/staging/rdma/ehca/TODO +++ /dev/null @@ -1,4 +0,0 @@ -9/2015 - -The ehca driver has been deprecated and moved to drivers/staging/rdma. -It will be removed in the 4.6 merge window. diff --git a/drivers/staging/rdma/ehca/ehca_av.c b/drivers/staging/rdma/ehca/ehca_av.c deleted file mode 100644 index 94e088c2d989..000000000000 --- a/drivers/staging/rdma/ehca/ehca_av.c +++ /dev/null @@ -1,279 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * address vector functions - * - * Authors: Hoang-Nam Nguyen - * Khadija Souissi - * Reinhard Ernst - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_tools.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" - -static struct kmem_cache *av_cache; - -int ehca_calc_ipd(struct ehca_shca *shca, int port, - enum ib_rate path_rate, u32 *ipd) -{ - int path = ib_rate_to_mult(path_rate); - int link, ret; - struct ib_port_attr pa; - - if (path_rate == IB_RATE_PORT_CURRENT) { - *ipd = 0; - return 0; - } - - if (unlikely(path < 0)) { - ehca_err(&shca->ib_device, "Invalid static rate! path_rate=%x", - path_rate); - return -EINVAL; - } - - ret = ehca_query_port(&shca->ib_device, port, &pa); - if (unlikely(ret < 0)) { - ehca_err(&shca->ib_device, "Failed to query port ret=%i", ret); - return ret; - } - - link = ib_width_enum_to_int(pa.active_width) * pa.active_speed; - - if (path >= link) - /* no need to throttle if path faster than link */ - *ipd = 0; - else - /* IPD = round((link / path) - 1) */ - *ipd = ((link + (path >> 1)) / path) - 1; - - return 0; -} - -struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) -{ - int ret; - struct ehca_av *av; - struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, - ib_device); - - av = kmem_cache_alloc(av_cache, GFP_KERNEL); - if (!av) { - ehca_err(pd->device, "Out of memory pd=%p ah_attr=%p", - pd, ah_attr); - return ERR_PTR(-ENOMEM); - } - - av->av.sl = ah_attr->sl; - av->av.dlid = ah_attr->dlid; - av->av.slid_path_bits = ah_attr->src_path_bits; - - if (ehca_static_rate < 0) { - u32 ipd; - - if (ehca_calc_ipd(shca, ah_attr->port_num, - ah_attr->static_rate, &ipd)) { - ret = -EINVAL; - goto create_ah_exit1; - } - av->av.ipd = ipd; - } else - av->av.ipd = ehca_static_rate; - - av->av.lnh = ah_attr->ah_flags; - av->av.grh.word_0 = EHCA_BMASK_SET(GRH_IPVERSION_MASK, 6); - av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_TCLASS_MASK, - ah_attr->grh.traffic_class); - av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK, - ah_attr->grh.flow_label); - av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK, - ah_attr->grh.hop_limit); - av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1B); - /* set sgid in grh.word_1 */ - if (ah_attr->ah_flags & IB_AH_GRH) { - int rc; - struct ib_port_attr port_attr; - union ib_gid gid; - - memset(&port_attr, 0, sizeof(port_attr)); - rc = ehca_query_port(pd->device, ah_attr->port_num, - &port_attr); - if (rc) { /* invalid port number */ - ret = -EINVAL; - ehca_err(pd->device, "Invalid port number " - "ehca_query_port() returned %x " - "pd=%p ah_attr=%p", rc, pd, ah_attr); - goto create_ah_exit1; - } - memset(&gid, 0, sizeof(gid)); - rc = ehca_query_gid(pd->device, - ah_attr->port_num, - ah_attr->grh.sgid_index, &gid); - if (rc) { - ret = -EINVAL; - ehca_err(pd->device, "Failed to retrieve sgid " - "ehca_query_gid() returned %x " - "pd=%p ah_attr=%p", rc, pd, ah_attr); - goto create_ah_exit1; - } - memcpy(&av->av.grh.word_1, &gid, sizeof(gid)); - } - av->av.pmtu = shca->max_mtu; - - /* dgid comes in grh.word_3 */ - memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid, - sizeof(ah_attr->grh.dgid)); - - return &av->ib_ah; - -create_ah_exit1: - kmem_cache_free(av_cache, av); - - return ERR_PTR(ret); -} - -int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) -{ - struct ehca_av *av; - struct ehca_ud_av new_ehca_av; - struct ehca_shca *shca = container_of(ah->pd->device, struct ehca_shca, - ib_device); - - memset(&new_ehca_av, 0, sizeof(new_ehca_av)); - new_ehca_av.sl = ah_attr->sl; - new_ehca_av.dlid = ah_attr->dlid; - new_ehca_av.slid_path_bits = ah_attr->src_path_bits; - new_ehca_av.ipd = ah_attr->static_rate; - new_ehca_av.lnh = EHCA_BMASK_SET(GRH_FLAG_MASK, - (ah_attr->ah_flags & IB_AH_GRH) > 0); - new_ehca_av.grh.word_0 = EHCA_BMASK_SET(GRH_TCLASS_MASK, - ah_attr->grh.traffic_class); - new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK, - ah_attr->grh.flow_label); - new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK, - ah_attr->grh.hop_limit); - new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1b); - - /* set sgid in grh.word_1 */ - if (ah_attr->ah_flags & IB_AH_GRH) { - int rc; - struct ib_port_attr port_attr; - union ib_gid gid; - - memset(&port_attr, 0, sizeof(port_attr)); - rc = ehca_query_port(ah->device, ah_attr->port_num, - &port_attr); - if (rc) { /* invalid port number */ - ehca_err(ah->device, "Invalid port number " - "ehca_query_port() returned %x " - "ah=%p ah_attr=%p port_num=%x", - rc, ah, ah_attr, ah_attr->port_num); - return -EINVAL; - } - memset(&gid, 0, sizeof(gid)); - rc = ehca_query_gid(ah->device, - ah_attr->port_num, - ah_attr->grh.sgid_index, &gid); - if (rc) { - ehca_err(ah->device, "Failed to retrieve sgid " - "ehca_query_gid() returned %x " - "ah=%p ah_attr=%p port_num=%x " - "sgid_index=%x", - rc, ah, ah_attr, ah_attr->port_num, - ah_attr->grh.sgid_index); - return -EINVAL; - } - memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid)); - } - - new_ehca_av.pmtu = shca->max_mtu; - - memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid, - sizeof(ah_attr->grh.dgid)); - - av = container_of(ah, struct ehca_av, ib_ah); - av->av = new_ehca_av; - - return 0; -} - -int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) -{ - struct ehca_av *av = container_of(ah, struct ehca_av, ib_ah); - - memcpy(&ah_attr->grh.dgid, &av->av.grh.word_3, - sizeof(ah_attr->grh.dgid)); - ah_attr->sl = av->av.sl; - - ah_attr->dlid = av->av.dlid; - - ah_attr->src_path_bits = av->av.slid_path_bits; - ah_attr->static_rate = av->av.ipd; - ah_attr->ah_flags = EHCA_BMASK_GET(GRH_FLAG_MASK, av->av.lnh); - ah_attr->grh.traffic_class = EHCA_BMASK_GET(GRH_TCLASS_MASK, - av->av.grh.word_0); - ah_attr->grh.hop_limit = EHCA_BMASK_GET(GRH_HOPLIMIT_MASK, - av->av.grh.word_0); - ah_attr->grh.flow_label = EHCA_BMASK_GET(GRH_FLOWLABEL_MASK, - av->av.grh.word_0); - - return 0; -} - -int ehca_destroy_ah(struct ib_ah *ah) -{ - kmem_cache_free(av_cache, container_of(ah, struct ehca_av, ib_ah)); - - return 0; -} - -int ehca_init_av_cache(void) -{ - av_cache = kmem_cache_create("ehca_cache_av", - sizeof(struct ehca_av), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!av_cache) - return -ENOMEM; - return 0; -} - -void ehca_cleanup_av_cache(void) -{ - kmem_cache_destroy(av_cache); -} diff --git a/drivers/staging/rdma/ehca/ehca_classes.h b/drivers/staging/rdma/ehca/ehca_classes.h deleted file mode 100644 index e8c3387d7aaa..000000000000 --- a/drivers/staging/rdma/ehca/ehca_classes.h +++ /dev/null @@ -1,481 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Struct definition for eHCA internal structures - * - * Authors: Heiko J Schick - * Christoph Raisch - * Joachim Fenkes - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __EHCA_CLASSES_H__ -#define __EHCA_CLASSES_H__ - -struct ehca_module; -struct ehca_qp; -struct ehca_cq; -struct ehca_eq; -struct ehca_mr; -struct ehca_mw; -struct ehca_pd; -struct ehca_av; - -#include -#include - -#include -#include - -#ifdef CONFIG_PPC64 -#include "ehca_classes_pSeries.h" -#endif -#include "ipz_pt_fn.h" -#include "ehca_qes.h" -#include "ehca_irq.h" - -#define EHCA_EQE_CACHE_SIZE 20 -#define EHCA_MAX_NUM_QUEUES 0xffff - -struct ehca_eqe_cache_entry { - struct ehca_eqe *eqe; - struct ehca_cq *cq; -}; - -struct ehca_eq { - u32 length; - struct ipz_queue ipz_queue; - struct ipz_eq_handle ipz_eq_handle; - struct work_struct work; - struct h_galpas galpas; - int is_initialized; - struct ehca_pfeq pf; - spinlock_t spinlock; - struct tasklet_struct interrupt_task; - u32 ist; - spinlock_t irq_spinlock; - struct ehca_eqe_cache_entry eqe_cache[EHCA_EQE_CACHE_SIZE]; -}; - -struct ehca_sma_attr { - u16 lid, lmc, sm_sl, sm_lid; - u16 pkey_tbl_len, pkeys[16]; -}; - -struct ehca_sport { - struct ib_cq *ibcq_aqp1; - struct ib_qp *ibqp_sqp[2]; - /* lock to serialze modify_qp() calls for sqp in normal - * and irq path (when event PORT_ACTIVE is received first time) - */ - spinlock_t mod_sqp_lock; - enum ib_port_state port_state; - struct ehca_sma_attr saved_attr; - u32 pma_qp_nr; -}; - -#define HCA_CAP_MR_PGSIZE_4K 0x80000000 -#define HCA_CAP_MR_PGSIZE_64K 0x40000000 -#define HCA_CAP_MR_PGSIZE_1M 0x20000000 -#define HCA_CAP_MR_PGSIZE_16M 0x10000000 - -struct ehca_shca { - struct ib_device ib_device; - struct platform_device *ofdev; - u8 num_ports; - int hw_level; - struct list_head shca_list; - struct ipz_adapter_handle ipz_hca_handle; - struct ehca_sport sport[2]; - struct ehca_eq eq; - struct ehca_eq neq; - struct ehca_mr *maxmr; - struct ehca_pd *pd; - struct h_galpas galpas; - struct mutex modify_mutex; - u64 hca_cap; - /* MR pgsize: bit 0-3 means 4K, 64K, 1M, 16M respectively */ - u32 hca_cap_mr_pgsize; - int max_mtu; - int max_num_qps; - int max_num_cqs; - atomic_t num_cqs; - atomic_t num_qps; -}; - -struct ehca_pd { - struct ib_pd ib_pd; - struct ipz_pd fw_pd; - /* small queue mgmt */ - struct mutex lock; - struct list_head free[2]; - struct list_head full[2]; -}; - -enum ehca_ext_qp_type { - EQPT_NORMAL = 0, - EQPT_LLQP = 1, - EQPT_SRQBASE = 2, - EQPT_SRQ = 3, -}; - -/* struct to cache modify_qp()'s parms for GSI/SMI qp */ -struct ehca_mod_qp_parm { - int mask; - struct ib_qp_attr attr; -}; - -#define EHCA_MOD_QP_PARM_MAX 4 - -#define QMAP_IDX_MASK 0xFFFFULL - -/* struct for tracking if cqes have been reported to the application */ -struct ehca_qmap_entry { - u16 app_wr_id; - u8 reported; - u8 cqe_req; -}; - -struct ehca_queue_map { - struct ehca_qmap_entry *map; - unsigned int entries; - unsigned int tail; - unsigned int left_to_poll; - unsigned int next_wqe_idx; /* Idx to first wqe to be flushed */ -}; - -/* function to calculate the next index for the qmap */ -static inline unsigned int next_index(unsigned int cur_index, unsigned int limit) -{ - unsigned int temp = cur_index + 1; - return (temp == limit) ? 0 : temp; -} - -struct ehca_qp { - union { - struct ib_qp ib_qp; - struct ib_srq ib_srq; - }; - u32 qp_type; - enum ehca_ext_qp_type ext_type; - enum ib_qp_state state; - struct ipz_queue ipz_squeue; - struct ehca_queue_map sq_map; - struct ipz_queue ipz_rqueue; - struct ehca_queue_map rq_map; - struct h_galpas galpas; - u32 qkey; - u32 real_qp_num; - u32 token; - spinlock_t spinlock_s; - spinlock_t spinlock_r; - u32 sq_max_inline_data_size; - struct ipz_qp_handle ipz_qp_handle; - struct ehca_pfqp pf; - struct ib_qp_init_attr init_attr; - struct ehca_cq *send_cq; - struct ehca_cq *recv_cq; - unsigned int sqerr_purgeflag; - struct hlist_node list_entries; - /* array to cache modify_qp()'s parms for GSI/SMI qp */ - struct ehca_mod_qp_parm *mod_qp_parm; - int mod_qp_parm_idx; - /* mmap counter for resources mapped into user space */ - u32 mm_count_squeue; - u32 mm_count_rqueue; - u32 mm_count_galpa; - /* unsolicited ack circumvention */ - int unsol_ack_circ; - int mtu_shift; - u32 message_count; - u32 packet_count; - atomic_t nr_events; /* events seen */ - wait_queue_head_t wait_completion; - int mig_armed; - struct list_head sq_err_node; - struct list_head rq_err_node; -}; - -#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ) -#define HAS_SQ(qp) (qp->ext_type != EQPT_SRQ) -#define HAS_RQ(qp) (qp->ext_type != EQPT_SRQBASE) - -/* must be power of 2 */ -#define QP_HASHTAB_LEN 8 - -struct ehca_cq { - struct ib_cq ib_cq; - struct ipz_queue ipz_queue; - struct h_galpas galpas; - spinlock_t spinlock; - u32 cq_number; - u32 token; - u32 nr_of_entries; - struct ipz_cq_handle ipz_cq_handle; - struct ehca_pfcq pf; - spinlock_t cb_lock; - struct hlist_head qp_hashtab[QP_HASHTAB_LEN]; - struct list_head entry; - u32 nr_callbacks; /* #events assigned to cpu by scaling code */ - atomic_t nr_events; /* #events seen */ - wait_queue_head_t wait_completion; - spinlock_t task_lock; - /* mmap counter for resources mapped into user space */ - u32 mm_count_queue; - u32 mm_count_galpa; - struct list_head sqp_err_list; - struct list_head rqp_err_list; -}; - -enum ehca_mr_flag { - EHCA_MR_FLAG_FMR = 0x80000000, /* FMR, created with ehca_alloc_fmr */ - EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR */ -}; - -struct ehca_mr { - union { - struct ib_mr ib_mr; /* must always be first in ehca_mr */ - struct ib_fmr ib_fmr; /* must always be first in ehca_mr */ - } ib; - struct ib_umem *umem; - spinlock_t mrlock; - - enum ehca_mr_flag flags; - u32 num_kpages; /* number of kernel pages */ - u32 num_hwpages; /* number of hw pages to form MR */ - u64 hwpage_size; /* hw page size used for this MR */ - int acl; /* ACL (stored here for usage in reregister) */ - u64 *start; /* virtual start address (stored here for */ - /* usage in reregister) */ - u64 size; /* size (stored here for usage in reregister) */ - u32 fmr_page_size; /* page size for FMR */ - u32 fmr_max_pages; /* max pages for FMR */ - u32 fmr_max_maps; /* max outstanding maps for FMR */ - u32 fmr_map_cnt; /* map counter for FMR */ - /* fw specific data */ - struct ipz_mrmw_handle ipz_mr_handle; /* MR handle for h-calls */ - struct h_galpas galpas; -}; - -struct ehca_mw { - struct ib_mw ib_mw; /* gen2 mw, must always be first in ehca_mw */ - spinlock_t mwlock; - - u8 never_bound; /* indication MW was never bound */ - struct ipz_mrmw_handle ipz_mw_handle; /* MW handle for h-calls */ - struct h_galpas galpas; -}; - -enum ehca_mr_pgi_type { - EHCA_MR_PGI_PHYS = 1, /* type of ehca_reg_phys_mr, - * ehca_rereg_phys_mr, - * ehca_reg_internal_maxmr */ - EHCA_MR_PGI_USER = 2, /* type of ehca_reg_user_mr */ - EHCA_MR_PGI_FMR = 3 /* type of ehca_map_phys_fmr */ -}; - -struct ehca_mr_pginfo { - enum ehca_mr_pgi_type type; - u64 num_kpages; - u64 kpage_cnt; - u64 hwpage_size; /* hw page size used for this MR */ - u64 num_hwpages; /* number of hw pages */ - u64 hwpage_cnt; /* counter for hw pages */ - u64 next_hwpage; /* next hw page in buffer/chunk/listelem */ - - union { - struct { /* type EHCA_MR_PGI_PHYS section */ - u64 addr; - u16 size; - } phy; - struct { /* type EHCA_MR_PGI_USER section */ - struct ib_umem *region; - struct scatterlist *next_sg; - u64 next_nmap; - } usr; - struct { /* type EHCA_MR_PGI_FMR section */ - u64 fmr_pgsize; - u64 *page_list; - u64 next_listelem; - } fmr; - } u; -}; - -/* output parameters for MR/FMR hipz calls */ -struct ehca_mr_hipzout_parms { - struct ipz_mrmw_handle handle; - u32 lkey; - u32 rkey; - u64 len; - u64 vaddr; - u32 acl; -}; - -/* output parameters for MW hipz calls */ -struct ehca_mw_hipzout_parms { - struct ipz_mrmw_handle handle; - u32 rkey; -}; - -struct ehca_av { - struct ib_ah ib_ah; - struct ehca_ud_av av; -}; - -struct ehca_ucontext { - struct ib_ucontext ib_ucontext; -}; - -int ehca_init_pd_cache(void); -void ehca_cleanup_pd_cache(void); -int ehca_init_cq_cache(void); -void ehca_cleanup_cq_cache(void); -int ehca_init_qp_cache(void); -void ehca_cleanup_qp_cache(void); -int ehca_init_av_cache(void); -void ehca_cleanup_av_cache(void); -int ehca_init_mrmw_cache(void); -void ehca_cleanup_mrmw_cache(void); -int ehca_init_small_qp_cache(void); -void ehca_cleanup_small_qp_cache(void); - -extern rwlock_t ehca_qp_idr_lock; -extern rwlock_t ehca_cq_idr_lock; -extern struct idr ehca_qp_idr; -extern struct idr ehca_cq_idr; -extern spinlock_t shca_list_lock; - -extern int ehca_static_rate; -extern int ehca_port_act_time; -extern bool ehca_use_hp_mr; -extern bool ehca_scaling_code; -extern int ehca_lock_hcalls; -extern int ehca_nr_ports; -extern int ehca_max_cq; -extern int ehca_max_qp; - -struct ipzu_queue_resp { - u32 qe_size; /* queue entry size */ - u32 act_nr_of_sg; - u32 queue_length; /* queue length allocated in bytes */ - u32 pagesize; - u32 toggle_state; - u32 offset; /* save offset within a page for small_qp */ -}; - -struct ehca_create_cq_resp { - u32 cq_number; - u32 token; - struct ipzu_queue_resp ipz_queue; - u32 fw_handle_ofs; - u32 dummy; -}; - -struct ehca_create_qp_resp { - u32 qp_num; - u32 token; - u32 qp_type; - u32 ext_type; - u32 qkey; - /* qp_num assigned by ehca: sqp0/1 may have got different numbers */ - u32 real_qp_num; - u32 fw_handle_ofs; - u32 dummy; - struct ipzu_queue_resp ipz_squeue; - struct ipzu_queue_resp ipz_rqueue; -}; - -struct ehca_alloc_cq_parms { - u32 nr_cqe; - u32 act_nr_of_entries; - u32 act_pages; - struct ipz_eq_handle eq_handle; -}; - -enum ehca_service_type { - ST_RC = 0, - ST_UC = 1, - ST_RD = 2, - ST_UD = 3, -}; - -enum ehca_ll_comp_flags { - LLQP_SEND_COMP = 0x20, - LLQP_RECV_COMP = 0x40, - LLQP_COMP_MASK = 0x60, -}; - -struct ehca_alloc_queue_parms { - /* input parameters */ - int max_wr; - int max_sge; - int page_size; - int is_small; - - /* output parameters */ - u16 act_nr_wqes; - u8 act_nr_sges; - u32 queue_size; /* bytes for small queues, pages otherwise */ -}; - -struct ehca_alloc_qp_parms { - struct ehca_alloc_queue_parms squeue; - struct ehca_alloc_queue_parms rqueue; - - /* input parameters */ - enum ehca_service_type servicetype; - int qp_storage; - int sigtype; - enum ehca_ext_qp_type ext_type; - enum ehca_ll_comp_flags ll_comp_flags; - int ud_av_l_key_ctl; - - u32 token; - struct ipz_eq_handle eq_handle; - struct ipz_pd pd; - struct ipz_cq_handle send_cq_handle, recv_cq_handle; - - u32 srq_qpn, srq_token, srq_limit; - - /* output parameters */ - u32 real_qp_num; - struct ipz_qp_handle qp_handle; - struct h_galpas galpas; -}; - -int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp); -int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num); -struct ehca_qp *ehca_cq_get_qp(struct ehca_cq *cq, int qp_num); - -#endif diff --git a/drivers/staging/rdma/ehca/ehca_classes_pSeries.h b/drivers/staging/rdma/ehca/ehca_classes_pSeries.h deleted file mode 100644 index 689c35786dd2..000000000000 --- a/drivers/staging/rdma/ehca/ehca_classes_pSeries.h +++ /dev/null @@ -1,208 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * pSeries interface definitions - * - * Authors: Waleri Fomin - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __EHCA_CLASSES_PSERIES_H__ -#define __EHCA_CLASSES_PSERIES_H__ - -#include "hcp_phyp.h" -#include "ipz_pt_fn.h" - - -struct ehca_pfqp { - struct ipz_qpt sqpt; - struct ipz_qpt rqpt; -}; - -struct ehca_pfcq { - struct ipz_qpt qpt; - u32 cqnr; -}; - -struct ehca_pfeq { - struct ipz_qpt qpt; - struct h_galpa galpa; - u32 eqnr; -}; - -struct ipz_adapter_handle { - u64 handle; -}; - -struct ipz_cq_handle { - u64 handle; -}; - -struct ipz_eq_handle { - u64 handle; -}; - -struct ipz_qp_handle { - u64 handle; -}; -struct ipz_mrmw_handle { - u64 handle; -}; - -struct ipz_pd { - u32 value; -}; - -struct hcp_modify_qp_control_block { - u32 qkey; /* 00 */ - u32 rdd; /* reliable datagram domain */ - u32 send_psn; /* 02 */ - u32 receive_psn; /* 03 */ - u32 prim_phys_port; /* 04 */ - u32 alt_phys_port; /* 05 */ - u32 prim_p_key_idx; /* 06 */ - u32 alt_p_key_idx; /* 07 */ - u32 rdma_atomic_ctrl; /* 08 */ - u32 qp_state; /* 09 */ - u32 reserved_10; /* 10 */ - u32 rdma_nr_atomic_resp_res; /* 11 */ - u32 path_migration_state; /* 12 */ - u32 rdma_atomic_outst_dest_qp; /* 13 */ - u32 dest_qp_nr; /* 14 */ - u32 min_rnr_nak_timer_field; /* 15 */ - u32 service_level; /* 16 */ - u32 send_grh_flag; /* 17 */ - u32 retry_count; /* 18 */ - u32 timeout; /* 19 */ - u32 path_mtu; /* 20 */ - u32 max_static_rate; /* 21 */ - u32 dlid; /* 22 */ - u32 rnr_retry_count; /* 23 */ - u32 source_path_bits; /* 24 */ - u32 traffic_class; /* 25 */ - u32 hop_limit; /* 26 */ - u32 source_gid_idx; /* 27 */ - u32 flow_label; /* 28 */ - u32 reserved_29; /* 29 */ - union { /* 30 */ - u64 dw[2]; - u8 byte[16]; - } dest_gid; - u32 service_level_al; /* 34 */ - u32 send_grh_flag_al; /* 35 */ - u32 retry_count_al; /* 36 */ - u32 timeout_al; /* 37 */ - u32 max_static_rate_al; /* 38 */ - u32 dlid_al; /* 39 */ - u32 rnr_retry_count_al; /* 40 */ - u32 source_path_bits_al; /* 41 */ - u32 traffic_class_al; /* 42 */ - u32 hop_limit_al; /* 43 */ - u32 source_gid_idx_al; /* 44 */ - u32 flow_label_al; /* 45 */ - u32 reserved_46; /* 46 */ - u32 reserved_47; /* 47 */ - union { /* 48 */ - u64 dw[2]; - u8 byte[16]; - } dest_gid_al; - u32 max_nr_outst_send_wr; /* 52 */ - u32 max_nr_outst_recv_wr; /* 53 */ - u32 disable_ete_credit_check; /* 54 */ - u32 qp_number; /* 55 */ - u64 send_queue_handle; /* 56 */ - u64 recv_queue_handle; /* 58 */ - u32 actual_nr_sges_in_sq_wqe; /* 60 */ - u32 actual_nr_sges_in_rq_wqe; /* 61 */ - u32 qp_enable; /* 62 */ - u32 curr_srq_limit; /* 63 */ - u64 qp_aff_asyn_ev_log_reg; /* 64 */ - u64 shared_rq_hndl; /* 66 */ - u64 trigg_doorbell_qp_hndl; /* 68 */ - u32 reserved_70_127[58]; /* 70 */ -}; - -#define MQPCB_MASK_QKEY EHCA_BMASK_IBM( 0, 0) -#define MQPCB_MASK_SEND_PSN EHCA_BMASK_IBM( 2, 2) -#define MQPCB_MASK_RECEIVE_PSN EHCA_BMASK_IBM( 3, 3) -#define MQPCB_MASK_PRIM_PHYS_PORT EHCA_BMASK_IBM( 4, 4) -#define MQPCB_PRIM_PHYS_PORT EHCA_BMASK_IBM(24, 31) -#define MQPCB_MASK_ALT_PHYS_PORT EHCA_BMASK_IBM( 5, 5) -#define MQPCB_MASK_PRIM_P_KEY_IDX EHCA_BMASK_IBM( 6, 6) -#define MQPCB_PRIM_P_KEY_IDX EHCA_BMASK_IBM(24, 31) -#define MQPCB_MASK_ALT_P_KEY_IDX EHCA_BMASK_IBM( 7, 7) -#define MQPCB_MASK_RDMA_ATOMIC_CTRL EHCA_BMASK_IBM( 8, 8) -#define MQPCB_MASK_QP_STATE EHCA_BMASK_IBM( 9, 9) -#define MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES EHCA_BMASK_IBM(11, 11) -#define MQPCB_MASK_PATH_MIGRATION_STATE EHCA_BMASK_IBM(12, 12) -#define MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP EHCA_BMASK_IBM(13, 13) -#define MQPCB_MASK_DEST_QP_NR EHCA_BMASK_IBM(14, 14) -#define MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD EHCA_BMASK_IBM(15, 15) -#define MQPCB_MASK_SERVICE_LEVEL EHCA_BMASK_IBM(16, 16) -#define MQPCB_MASK_SEND_GRH_FLAG EHCA_BMASK_IBM(17, 17) -#define MQPCB_MASK_RETRY_COUNT EHCA_BMASK_IBM(18, 18) -#define MQPCB_MASK_TIMEOUT EHCA_BMASK_IBM(19, 19) -#define MQPCB_MASK_PATH_MTU EHCA_BMASK_IBM(20, 20) -#define MQPCB_MASK_MAX_STATIC_RATE EHCA_BMASK_IBM(21, 21) -#define MQPCB_MASK_DLID EHCA_BMASK_IBM(22, 22) -#define MQPCB_MASK_RNR_RETRY_COUNT EHCA_BMASK_IBM(23, 23) -#define MQPCB_MASK_SOURCE_PATH_BITS EHCA_BMASK_IBM(24, 24) -#define MQPCB_MASK_TRAFFIC_CLASS EHCA_BMASK_IBM(25, 25) -#define MQPCB_MASK_HOP_LIMIT EHCA_BMASK_IBM(26, 26) -#define MQPCB_MASK_SOURCE_GID_IDX EHCA_BMASK_IBM(27, 27) -#define MQPCB_MASK_FLOW_LABEL EHCA_BMASK_IBM(28, 28) -#define MQPCB_MASK_DEST_GID EHCA_BMASK_IBM(30, 30) -#define MQPCB_MASK_SERVICE_LEVEL_AL EHCA_BMASK_IBM(31, 31) -#define MQPCB_MASK_SEND_GRH_FLAG_AL EHCA_BMASK_IBM(32, 32) -#define MQPCB_MASK_RETRY_COUNT_AL EHCA_BMASK_IBM(33, 33) -#define MQPCB_MASK_TIMEOUT_AL EHCA_BMASK_IBM(34, 34) -#define MQPCB_MASK_MAX_STATIC_RATE_AL EHCA_BMASK_IBM(35, 35) -#define MQPCB_MASK_DLID_AL EHCA_BMASK_IBM(36, 36) -#define MQPCB_MASK_RNR_RETRY_COUNT_AL EHCA_BMASK_IBM(37, 37) -#define MQPCB_MASK_SOURCE_PATH_BITS_AL EHCA_BMASK_IBM(38, 38) -#define MQPCB_MASK_TRAFFIC_CLASS_AL EHCA_BMASK_IBM(39, 39) -#define MQPCB_MASK_HOP_LIMIT_AL EHCA_BMASK_IBM(40, 40) -#define MQPCB_MASK_SOURCE_GID_IDX_AL EHCA_BMASK_IBM(41, 41) -#define MQPCB_MASK_FLOW_LABEL_AL EHCA_BMASK_IBM(42, 42) -#define MQPCB_MASK_DEST_GID_AL EHCA_BMASK_IBM(44, 44) -#define MQPCB_MASK_MAX_NR_OUTST_SEND_WR EHCA_BMASK_IBM(45, 45) -#define MQPCB_MASK_MAX_NR_OUTST_RECV_WR EHCA_BMASK_IBM(46, 46) -#define MQPCB_MASK_DISABLE_ETE_CREDIT_CHECK EHCA_BMASK_IBM(47, 47) -#define MQPCB_MASK_QP_ENABLE EHCA_BMASK_IBM(48, 48) -#define MQPCB_MASK_CURR_SRQ_LIMIT EHCA_BMASK_IBM(49, 49) -#define MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG EHCA_BMASK_IBM(50, 50) -#define MQPCB_MASK_SHARED_RQ_HNDL EHCA_BMASK_IBM(51, 51) - -#endif /* __EHCA_CLASSES_PSERIES_H__ */ diff --git a/drivers/staging/rdma/ehca/ehca_cq.c b/drivers/staging/rdma/ehca/ehca_cq.c deleted file mode 100644 index 1aa7931fe860..000000000000 --- a/drivers/staging/rdma/ehca/ehca_cq.c +++ /dev/null @@ -1,397 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Completion queue handling - * - * Authors: Waleri Fomin - * Khadija Souissi - * Reinhard Ernst - * Heiko J Schick - * Hoang-Nam Nguyen - * - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_iverbs.h" -#include "ehca_classes.h" -#include "ehca_irq.h" -#include "hcp_if.h" - -static struct kmem_cache *cq_cache; - -int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp) -{ - unsigned int qp_num = qp->real_qp_num; - unsigned int key = qp_num & (QP_HASHTAB_LEN-1); - unsigned long flags; - - spin_lock_irqsave(&cq->spinlock, flags); - hlist_add_head(&qp->list_entries, &cq->qp_hashtab[key]); - spin_unlock_irqrestore(&cq->spinlock, flags); - - ehca_dbg(cq->ib_cq.device, "cq_num=%x real_qp_num=%x", - cq->cq_number, qp_num); - - return 0; -} - -int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int real_qp_num) -{ - int ret = -EINVAL; - unsigned int key = real_qp_num & (QP_HASHTAB_LEN-1); - struct hlist_node *iter; - struct ehca_qp *qp; - unsigned long flags; - - spin_lock_irqsave(&cq->spinlock, flags); - hlist_for_each(iter, &cq->qp_hashtab[key]) { - qp = hlist_entry(iter, struct ehca_qp, list_entries); - if (qp->real_qp_num == real_qp_num) { - hlist_del(iter); - ehca_dbg(cq->ib_cq.device, - "removed qp from cq .cq_num=%x real_qp_num=%x", - cq->cq_number, real_qp_num); - ret = 0; - break; - } - } - spin_unlock_irqrestore(&cq->spinlock, flags); - if (ret) - ehca_err(cq->ib_cq.device, - "qp not found cq_num=%x real_qp_num=%x", - cq->cq_number, real_qp_num); - - return ret; -} - -struct ehca_qp *ehca_cq_get_qp(struct ehca_cq *cq, int real_qp_num) -{ - struct ehca_qp *ret = NULL; - unsigned int key = real_qp_num & (QP_HASHTAB_LEN-1); - struct hlist_node *iter; - struct ehca_qp *qp; - hlist_for_each(iter, &cq->qp_hashtab[key]) { - qp = hlist_entry(iter, struct ehca_qp, list_entries); - if (qp->real_qp_num == real_qp_num) { - ret = qp; - break; - } - } - return ret; -} - -struct ib_cq *ehca_create_cq(struct ib_device *device, - const struct ib_cq_init_attr *attr, - struct ib_ucontext *context, - struct ib_udata *udata) -{ - int cqe = attr->cqe; - static const u32 additional_cqe = 20; - struct ib_cq *cq; - struct ehca_cq *my_cq; - struct ehca_shca *shca = - container_of(device, struct ehca_shca, ib_device); - struct ipz_adapter_handle adapter_handle; - struct ehca_alloc_cq_parms param; /* h_call's out parameters */ - struct h_galpa gal; - void *vpage; - u32 counter; - u64 rpage, cqx_fec, h_ret; - int rc, i; - unsigned long flags; - - if (attr->flags) - return ERR_PTR(-EINVAL); - - if (cqe >= 0xFFFFFFFF - 64 - additional_cqe) - return ERR_PTR(-EINVAL); - - if (!atomic_add_unless(&shca->num_cqs, 1, shca->max_num_cqs)) { - ehca_err(device, "Unable to create CQ, max number of %i " - "CQs reached.", shca->max_num_cqs); - ehca_err(device, "To increase the maximum number of CQs " - "use the number_of_cqs module parameter.\n"); - return ERR_PTR(-ENOSPC); - } - - my_cq = kmem_cache_zalloc(cq_cache, GFP_KERNEL); - if (!my_cq) { - ehca_err(device, "Out of memory for ehca_cq struct device=%p", - device); - atomic_dec(&shca->num_cqs); - return ERR_PTR(-ENOMEM); - } - - memset(¶m, 0, sizeof(struct ehca_alloc_cq_parms)); - - spin_lock_init(&my_cq->spinlock); - spin_lock_init(&my_cq->cb_lock); - spin_lock_init(&my_cq->task_lock); - atomic_set(&my_cq->nr_events, 0); - init_waitqueue_head(&my_cq->wait_completion); - - cq = &my_cq->ib_cq; - - adapter_handle = shca->ipz_hca_handle; - param.eq_handle = shca->eq.ipz_eq_handle; - - idr_preload(GFP_KERNEL); - write_lock_irqsave(&ehca_cq_idr_lock, flags); - rc = idr_alloc(&ehca_cq_idr, my_cq, 0, 0x2000000, GFP_NOWAIT); - write_unlock_irqrestore(&ehca_cq_idr_lock, flags); - idr_preload_end(); - - if (rc < 0) { - cq = ERR_PTR(-ENOMEM); - ehca_err(device, "Can't allocate new idr entry. device=%p", - device); - goto create_cq_exit1; - } - my_cq->token = rc; - - /* - * CQs maximum depth is 4GB-64, but we need additional 20 as buffer - * for receiving errors CQEs. - */ - param.nr_cqe = cqe + additional_cqe; - h_ret = hipz_h_alloc_resource_cq(adapter_handle, my_cq, ¶m); - - if (h_ret != H_SUCCESS) { - ehca_err(device, "hipz_h_alloc_resource_cq() failed " - "h_ret=%lli device=%p", h_ret, device); - cq = ERR_PTR(ehca2ib_return_code(h_ret)); - goto create_cq_exit2; - } - - rc = ipz_queue_ctor(NULL, &my_cq->ipz_queue, param.act_pages, - EHCA_PAGESIZE, sizeof(struct ehca_cqe), 0, 0); - if (!rc) { - ehca_err(device, "ipz_queue_ctor() failed ipz_rc=%i device=%p", - rc, device); - cq = ERR_PTR(-EINVAL); - goto create_cq_exit3; - } - - for (counter = 0; counter < param.act_pages; counter++) { - vpage = ipz_qpageit_get_inc(&my_cq->ipz_queue); - if (!vpage) { - ehca_err(device, "ipz_qpageit_get_inc() " - "returns NULL device=%p", device); - cq = ERR_PTR(-EAGAIN); - goto create_cq_exit4; - } - rpage = __pa(vpage); - - h_ret = hipz_h_register_rpage_cq(adapter_handle, - my_cq->ipz_cq_handle, - &my_cq->pf, - 0, - 0, - rpage, - 1, - my_cq->galpas. - kernel); - - if (h_ret < H_SUCCESS) { - ehca_err(device, "hipz_h_register_rpage_cq() failed " - "ehca_cq=%p cq_num=%x h_ret=%lli counter=%i " - "act_pages=%i", my_cq, my_cq->cq_number, - h_ret, counter, param.act_pages); - cq = ERR_PTR(-EINVAL); - goto create_cq_exit4; - } - - if (counter == (param.act_pages - 1)) { - vpage = ipz_qpageit_get_inc(&my_cq->ipz_queue); - if ((h_ret != H_SUCCESS) || vpage) { - ehca_err(device, "Registration of pages not " - "complete ehca_cq=%p cq_num=%x " - "h_ret=%lli", my_cq, my_cq->cq_number, - h_ret); - cq = ERR_PTR(-EAGAIN); - goto create_cq_exit4; - } - } else { - if (h_ret != H_PAGE_REGISTERED) { - ehca_err(device, "Registration of page failed " - "ehca_cq=%p cq_num=%x h_ret=%lli " - "counter=%i act_pages=%i", - my_cq, my_cq->cq_number, - h_ret, counter, param.act_pages); - cq = ERR_PTR(-ENOMEM); - goto create_cq_exit4; - } - } - } - - ipz_qeit_reset(&my_cq->ipz_queue); - - gal = my_cq->galpas.kernel; - cqx_fec = hipz_galpa_load(gal, CQTEMM_OFFSET(cqx_fec)); - ehca_dbg(device, "ehca_cq=%p cq_num=%x CQX_FEC=%llx", - my_cq, my_cq->cq_number, cqx_fec); - - my_cq->ib_cq.cqe = my_cq->nr_of_entries = - param.act_nr_of_entries - additional_cqe; - my_cq->cq_number = (my_cq->ipz_cq_handle.handle) & 0xffff; - - for (i = 0; i < QP_HASHTAB_LEN; i++) - INIT_HLIST_HEAD(&my_cq->qp_hashtab[i]); - - INIT_LIST_HEAD(&my_cq->sqp_err_list); - INIT_LIST_HEAD(&my_cq->rqp_err_list); - - if (context) { - struct ipz_queue *ipz_queue = &my_cq->ipz_queue; - struct ehca_create_cq_resp resp; - memset(&resp, 0, sizeof(resp)); - resp.cq_number = my_cq->cq_number; - resp.token = my_cq->token; - resp.ipz_queue.qe_size = ipz_queue->qe_size; - resp.ipz_queue.act_nr_of_sg = ipz_queue->act_nr_of_sg; - resp.ipz_queue.queue_length = ipz_queue->queue_length; - resp.ipz_queue.pagesize = ipz_queue->pagesize; - resp.ipz_queue.toggle_state = ipz_queue->toggle_state; - resp.fw_handle_ofs = (u32) - (my_cq->galpas.user.fw_handle & (PAGE_SIZE - 1)); - if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { - ehca_err(device, "Copy to udata failed."); - cq = ERR_PTR(-EFAULT); - goto create_cq_exit4; - } - } - - return cq; - -create_cq_exit4: - ipz_queue_dtor(NULL, &my_cq->ipz_queue); - -create_cq_exit3: - h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 1); - if (h_ret != H_SUCCESS) - ehca_err(device, "hipz_h_destroy_cq() failed ehca_cq=%p " - "cq_num=%x h_ret=%lli", my_cq, my_cq->cq_number, h_ret); - -create_cq_exit2: - write_lock_irqsave(&ehca_cq_idr_lock, flags); - idr_remove(&ehca_cq_idr, my_cq->token); - write_unlock_irqrestore(&ehca_cq_idr_lock, flags); - -create_cq_exit1: - kmem_cache_free(cq_cache, my_cq); - - atomic_dec(&shca->num_cqs); - return cq; -} - -int ehca_destroy_cq(struct ib_cq *cq) -{ - u64 h_ret; - struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq); - int cq_num = my_cq->cq_number; - struct ib_device *device = cq->device; - struct ehca_shca *shca = container_of(device, struct ehca_shca, - ib_device); - struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle; - unsigned long flags; - - if (cq->uobject) { - if (my_cq->mm_count_galpa || my_cq->mm_count_queue) { - ehca_err(device, "Resources still referenced in " - "user space cq_num=%x", my_cq->cq_number); - return -EINVAL; - } - } - - /* - * remove the CQ from the idr first to make sure - * no more interrupt tasklets will touch this CQ - */ - write_lock_irqsave(&ehca_cq_idr_lock, flags); - idr_remove(&ehca_cq_idr, my_cq->token); - write_unlock_irqrestore(&ehca_cq_idr_lock, flags); - - /* now wait until all pending events have completed */ - wait_event(my_cq->wait_completion, !atomic_read(&my_cq->nr_events)); - - /* nobody's using our CQ any longer -- we can destroy it */ - h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 0); - if (h_ret == H_R_STATE) { - /* cq in err: read err data and destroy it forcibly */ - ehca_dbg(device, "ehca_cq=%p cq_num=%x resource=%llx in err " - "state. Try to delete it forcibly.", - my_cq, cq_num, my_cq->ipz_cq_handle.handle); - ehca_error_data(shca, my_cq, my_cq->ipz_cq_handle.handle); - h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 1); - if (h_ret == H_SUCCESS) - ehca_dbg(device, "cq_num=%x deleted successfully.", - cq_num); - } - if (h_ret != H_SUCCESS) { - ehca_err(device, "hipz_h_destroy_cq() failed h_ret=%lli " - "ehca_cq=%p cq_num=%x", h_ret, my_cq, cq_num); - return ehca2ib_return_code(h_ret); - } - ipz_queue_dtor(NULL, &my_cq->ipz_queue); - kmem_cache_free(cq_cache, my_cq); - - atomic_dec(&shca->num_cqs); - return 0; -} - -int ehca_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata) -{ - /* TODO: proper resize needs to be done */ - ehca_err(cq->device, "not implemented yet"); - - return -EFAULT; -} - -int ehca_init_cq_cache(void) -{ - cq_cache = kmem_cache_create("ehca_cache_cq", - sizeof(struct ehca_cq), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!cq_cache) - return -ENOMEM; - return 0; -} - -void ehca_cleanup_cq_cache(void) -{ - kmem_cache_destroy(cq_cache); -} diff --git a/drivers/staging/rdma/ehca/ehca_eq.c b/drivers/staging/rdma/ehca/ehca_eq.c deleted file mode 100644 index 90da6747d395..000000000000 --- a/drivers/staging/rdma/ehca/ehca_eq.c +++ /dev/null @@ -1,189 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Event queue handling - * - * Authors: Waleri Fomin - * Khadija Souissi - * Reinhard Ernst - * Heiko J Schick - * Hoang-Nam Nguyen - * - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "ehca_classes.h" -#include "ehca_irq.h" -#include "ehca_iverbs.h" -#include "ehca_qes.h" -#include "hcp_if.h" -#include "ipz_pt_fn.h" - -int ehca_create_eq(struct ehca_shca *shca, - struct ehca_eq *eq, - const enum ehca_eq_type type, const u32 length) -{ - int ret; - u64 h_ret; - u32 nr_pages; - u32 i; - void *vpage; - struct ib_device *ib_dev = &shca->ib_device; - - spin_lock_init(&eq->spinlock); - spin_lock_init(&eq->irq_spinlock); - eq->is_initialized = 0; - - if (type != EHCA_EQ && type != EHCA_NEQ) { - ehca_err(ib_dev, "Invalid EQ type %x. eq=%p", type, eq); - return -EINVAL; - } - if (!length) { - ehca_err(ib_dev, "EQ length must not be zero. eq=%p", eq); - return -EINVAL; - } - - h_ret = hipz_h_alloc_resource_eq(shca->ipz_hca_handle, - &eq->pf, - type, - length, - &eq->ipz_eq_handle, - &eq->length, - &nr_pages, &eq->ist); - - if (h_ret != H_SUCCESS) { - ehca_err(ib_dev, "Can't allocate EQ/NEQ. eq=%p", eq); - return -EINVAL; - } - - ret = ipz_queue_ctor(NULL, &eq->ipz_queue, nr_pages, - EHCA_PAGESIZE, sizeof(struct ehca_eqe), 0, 0); - if (!ret) { - ehca_err(ib_dev, "Can't allocate EQ pages eq=%p", eq); - goto create_eq_exit1; - } - - for (i = 0; i < nr_pages; i++) { - u64 rpage; - - vpage = ipz_qpageit_get_inc(&eq->ipz_queue); - if (!vpage) - goto create_eq_exit2; - - rpage = __pa(vpage); - h_ret = hipz_h_register_rpage_eq(shca->ipz_hca_handle, - eq->ipz_eq_handle, - &eq->pf, - 0, 0, rpage, 1); - - if (i == (nr_pages - 1)) { - /* last page */ - vpage = ipz_qpageit_get_inc(&eq->ipz_queue); - if (h_ret != H_SUCCESS || vpage) - goto create_eq_exit2; - } else { - if (h_ret != H_PAGE_REGISTERED) - goto create_eq_exit2; - } - } - - ipz_qeit_reset(&eq->ipz_queue); - - /* register interrupt handlers and initialize work queues */ - if (type == EHCA_EQ) { - tasklet_init(&eq->interrupt_task, ehca_tasklet_eq, (long)shca); - - ret = ibmebus_request_irq(eq->ist, ehca_interrupt_eq, - 0, "ehca_eq", - (void *)shca); - if (ret < 0) - ehca_err(ib_dev, "Can't map interrupt handler."); - } else if (type == EHCA_NEQ) { - tasklet_init(&eq->interrupt_task, ehca_tasklet_neq, (long)shca); - - ret = ibmebus_request_irq(eq->ist, ehca_interrupt_neq, - 0, "ehca_neq", - (void *)shca); - if (ret < 0) - ehca_err(ib_dev, "Can't map interrupt handler."); - } - - eq->is_initialized = 1; - - return 0; - -create_eq_exit2: - ipz_queue_dtor(NULL, &eq->ipz_queue); - -create_eq_exit1: - hipz_h_destroy_eq(shca->ipz_hca_handle, eq); - - return -EINVAL; -} - -void *ehca_poll_eq(struct ehca_shca *shca, struct ehca_eq *eq) -{ - unsigned long flags; - void *eqe; - - spin_lock_irqsave(&eq->spinlock, flags); - eqe = ipz_eqit_eq_get_inc_valid(&eq->ipz_queue); - spin_unlock_irqrestore(&eq->spinlock, flags); - - return eqe; -} - -int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq) -{ - unsigned long flags; - u64 h_ret; - - ibmebus_free_irq(eq->ist, (void *)shca); - - spin_lock_irqsave(&shca_list_lock, flags); - eq->is_initialized = 0; - spin_unlock_irqrestore(&shca_list_lock, flags); - - tasklet_kill(&eq->interrupt_task); - - h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq); - - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't free EQ resources."); - return -EINVAL; - } - ipz_queue_dtor(NULL, &eq->ipz_queue); - - return 0; -} diff --git a/drivers/staging/rdma/ehca/ehca_hca.c b/drivers/staging/rdma/ehca/ehca_hca.c deleted file mode 100644 index e8b1bb65797a..000000000000 --- a/drivers/staging/rdma/ehca/ehca_hca.c +++ /dev/null @@ -1,414 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * HCA query functions - * - * Authors: Heiko J Schick - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_tools.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" - -static unsigned int limit_uint(unsigned int value) -{ - return min_t(unsigned int, value, INT_MAX); -} - -int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props, - struct ib_udata *uhw) -{ - int i, ret = 0; - struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, - ib_device); - struct hipz_query_hca *rblock; - - static const u32 cap_mapping[] = { - IB_DEVICE_RESIZE_MAX_WR, HCA_CAP_WQE_RESIZE, - IB_DEVICE_BAD_PKEY_CNTR, HCA_CAP_BAD_P_KEY_CTR, - IB_DEVICE_BAD_QKEY_CNTR, HCA_CAP_Q_KEY_VIOL_CTR, - IB_DEVICE_RAW_MULTI, HCA_CAP_RAW_PACKET_MCAST, - IB_DEVICE_AUTO_PATH_MIG, HCA_CAP_AUTO_PATH_MIG, - IB_DEVICE_CHANGE_PHY_PORT, HCA_CAP_SQD_RTS_PORT_CHANGE, - IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK, - IB_DEVICE_CURR_QP_STATE_MOD, HCA_CAP_CUR_QP_STATE_MOD, - IB_DEVICE_SHUTDOWN_PORT, HCA_CAP_SHUTDOWN_PORT, - IB_DEVICE_INIT_TYPE, HCA_CAP_INIT_TYPE, - IB_DEVICE_PORT_ACTIVE_EVENT, HCA_CAP_PORT_ACTIVE_EVENT, - }; - - if (uhw->inlen || uhw->outlen) - return -EINVAL; - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query device properties"); - ret = -EINVAL; - goto query_device1; - } - - memset(props, 0, sizeof(struct ib_device_attr)); - props->page_size_cap = shca->hca_cap_mr_pgsize; - props->fw_ver = rblock->hw_ver; - props->max_mr_size = rblock->max_mr_size; - props->vendor_id = rblock->vendor_id >> 8; - props->vendor_part_id = rblock->vendor_part_id >> 16; - props->hw_ver = rblock->hw_ver; - props->max_qp = limit_uint(rblock->max_qp); - props->max_qp_wr = limit_uint(rblock->max_wqes_wq); - props->max_sge = limit_uint(rblock->max_sge); - props->max_sge_rd = limit_uint(rblock->max_sge_rd); - props->max_cq = limit_uint(rblock->max_cq); - props->max_cqe = limit_uint(rblock->max_cqe); - props->max_mr = limit_uint(rblock->max_mr); - props->max_mw = limit_uint(rblock->max_mw); - props->max_pd = limit_uint(rblock->max_pd); - props->max_ah = limit_uint(rblock->max_ah); - props->max_ee = limit_uint(rblock->max_rd_ee_context); - props->max_rdd = limit_uint(rblock->max_rd_domain); - props->max_fmr = limit_uint(rblock->max_mr); - props->max_qp_rd_atom = limit_uint(rblock->max_rr_qp); - props->max_ee_rd_atom = limit_uint(rblock->max_rr_ee_context); - props->max_res_rd_atom = limit_uint(rblock->max_rr_hca); - props->max_qp_init_rd_atom = limit_uint(rblock->max_act_wqs_qp); - props->max_ee_init_rd_atom = limit_uint(rblock->max_act_wqs_ee_context); - - if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { - props->max_srq = limit_uint(props->max_qp); - props->max_srq_wr = limit_uint(props->max_qp_wr); - props->max_srq_sge = 3; - } - - props->max_pkeys = 16; - /* Some FW versions say 0 here; insert sensible value in that case */ - props->local_ca_ack_delay = rblock->local_ca_ack_delay ? - min_t(u8, rblock->local_ca_ack_delay, 255) : 12; - props->max_raw_ipv6_qp = limit_uint(rblock->max_raw_ipv6_qp); - props->max_raw_ethy_qp = limit_uint(rblock->max_raw_ethy_qp); - props->max_mcast_grp = limit_uint(rblock->max_mcast_grp); - props->max_mcast_qp_attach = limit_uint(rblock->max_mcast_qp_attach); - props->max_total_mcast_qp_attach - = limit_uint(rblock->max_total_mcast_qp_attach); - - /* translate device capabilities */ - props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID | - IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ; - for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2) - if (rblock->hca_cap_indicators & cap_mapping[i + 1]) - props->device_cap_flags |= cap_mapping[i]; - -query_device1: - ehca_free_fw_ctrlblock(rblock); - - return ret; -} - -static enum ib_mtu map_mtu(struct ehca_shca *shca, u32 fw_mtu) -{ - switch (fw_mtu) { - case 0x1: - return IB_MTU_256; - case 0x2: - return IB_MTU_512; - case 0x3: - return IB_MTU_1024; - case 0x4: - return IB_MTU_2048; - case 0x5: - return IB_MTU_4096; - default: - ehca_err(&shca->ib_device, "Unknown MTU size: %x.", - fw_mtu); - return 0; - } -} - -static u8 map_number_of_vls(struct ehca_shca *shca, u32 vl_cap) -{ - switch (vl_cap) { - case 0x1: - return 1; - case 0x2: - return 2; - case 0x3: - return 4; - case 0x4: - return 8; - case 0x5: - return 15; - default: - ehca_err(&shca->ib_device, "invalid Vl Capability: %x.", - vl_cap); - return 0; - } -} - -int ehca_query_port(struct ib_device *ibdev, - u8 port, struct ib_port_attr *props) -{ - int ret = 0; - u64 h_ret; - struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, - ib_device); - struct hipz_query_port *rblock; - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query port properties"); - ret = -EINVAL; - goto query_port1; - } - - memset(props, 0, sizeof(struct ib_port_attr)); - - props->active_mtu = props->max_mtu = map_mtu(shca, rblock->max_mtu); - props->port_cap_flags = rblock->capability_mask; - props->gid_tbl_len = rblock->gid_tbl_len; - if (rblock->max_msg_sz) - props->max_msg_sz = rblock->max_msg_sz; - else - props->max_msg_sz = 0x1 << 31; - props->bad_pkey_cntr = rblock->bad_pkey_cntr; - props->qkey_viol_cntr = rblock->qkey_viol_cntr; - props->pkey_tbl_len = rblock->pkey_tbl_len; - props->lid = rblock->lid; - props->sm_lid = rblock->sm_lid; - props->lmc = rblock->lmc; - props->sm_sl = rblock->sm_sl; - props->subnet_timeout = rblock->subnet_timeout; - props->init_type_reply = rblock->init_type_reply; - props->max_vl_num = map_number_of_vls(shca, rblock->vl_cap); - - if (rblock->state && rblock->phys_width) { - props->phys_state = rblock->phys_pstate; - props->state = rblock->phys_state; - props->active_width = rblock->phys_width; - props->active_speed = rblock->phys_speed; - } else { - /* old firmware releases don't report physical - * port info, so use default values - */ - props->phys_state = 5; - props->state = rblock->state; - props->active_width = IB_WIDTH_12X; - props->active_speed = IB_SPEED_SDR; - } - -query_port1: - ehca_free_fw_ctrlblock(rblock); - - return ret; -} - -int ehca_query_sma_attr(struct ehca_shca *shca, - u8 port, struct ehca_sma_attr *attr) -{ - int ret = 0; - u64 h_ret; - struct hipz_query_port *rblock; - - rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query port properties"); - ret = -EINVAL; - goto query_sma_attr1; - } - - memset(attr, 0, sizeof(struct ehca_sma_attr)); - - attr->lid = rblock->lid; - attr->lmc = rblock->lmc; - attr->sm_sl = rblock->sm_sl; - attr->sm_lid = rblock->sm_lid; - - attr->pkey_tbl_len = rblock->pkey_tbl_len; - memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys)); - -query_sma_attr1: - ehca_free_fw_ctrlblock(rblock); - - return ret; -} - -int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) -{ - int ret = 0; - u64 h_ret; - struct ehca_shca *shca; - struct hipz_query_port *rblock; - - shca = container_of(ibdev, struct ehca_shca, ib_device); - if (index > 16) { - ehca_err(&shca->ib_device, "Invalid index: %x.", index); - return -EINVAL; - } - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query port properties"); - ret = -EINVAL; - goto query_pkey1; - } - - memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16)); - -query_pkey1: - ehca_free_fw_ctrlblock(rblock); - - return ret; -} - -int ehca_query_gid(struct ib_device *ibdev, u8 port, - int index, union ib_gid *gid) -{ - int ret = 0; - u64 h_ret; - struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, - ib_device); - struct hipz_query_port *rblock; - - if (index < 0 || index > 255) { - ehca_err(&shca->ib_device, "Invalid index: %x.", index); - return -EINVAL; - } - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query port properties"); - ret = -EINVAL; - goto query_gid1; - } - - memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64)); - memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64)); - -query_gid1: - ehca_free_fw_ctrlblock(rblock); - - return ret; -} - -static const u32 allowed_port_caps = ( - IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP | - IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP | - IB_PORT_VENDOR_CLASS_SUP); - -int ehca_modify_port(struct ib_device *ibdev, - u8 port, int port_modify_mask, - struct ib_port_modify *props) -{ - int ret = 0; - struct ehca_shca *shca; - struct hipz_query_port *rblock; - u32 cap; - u64 hret; - - shca = container_of(ibdev, struct ehca_shca, ib_device); - if ((props->set_port_cap_mask | props->clr_port_cap_mask) - & ~allowed_port_caps) { - ehca_err(&shca->ib_device, "Non-changeable bits set in masks " - "set=%x clr=%x allowed=%x", props->set_port_cap_mask, - props->clr_port_cap_mask, allowed_port_caps); - return -EINVAL; - } - - if (mutex_lock_interruptible(&shca->modify_mutex)) - return -ERESTARTSYS; - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - ret = -ENOMEM; - goto modify_port1; - } - - hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock); - if (hret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query port properties"); - ret = -EINVAL; - goto modify_port2; - } - - cap = (rblock->capability_mask | props->set_port_cap_mask) - & ~props->clr_port_cap_mask; - - hret = hipz_h_modify_port(shca->ipz_hca_handle, port, - cap, props->init_type, port_modify_mask); - if (hret != H_SUCCESS) { - ehca_err(&shca->ib_device, "Modify port failed h_ret=%lli", - hret); - ret = -EINVAL; - } - -modify_port2: - ehca_free_fw_ctrlblock(rblock); - -modify_port1: - mutex_unlock(&shca->modify_mutex); - - return ret; -} diff --git a/drivers/staging/rdma/ehca/ehca_irq.c b/drivers/staging/rdma/ehca/ehca_irq.c deleted file mode 100644 index 8615d7cf7e01..000000000000 --- a/drivers/staging/rdma/ehca/ehca_irq.c +++ /dev/null @@ -1,870 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Functions for EQs, NEQs and interrupts - * - * Authors: Heiko J Schick - * Khadija Souissi - * Hoang-Nam Nguyen - * Joachim Fenkes - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include - -#include "ehca_classes.h" -#include "ehca_irq.h" -#include "ehca_iverbs.h" -#include "ehca_tools.h" -#include "hcp_if.h" -#include "hipz_fns.h" -#include "ipz_pt_fn.h" - -#define EQE_COMPLETION_EVENT EHCA_BMASK_IBM( 1, 1) -#define EQE_CQ_QP_NUMBER EHCA_BMASK_IBM( 8, 31) -#define EQE_EE_IDENTIFIER EHCA_BMASK_IBM( 2, 7) -#define EQE_CQ_NUMBER EHCA_BMASK_IBM( 8, 31) -#define EQE_QP_NUMBER EHCA_BMASK_IBM( 8, 31) -#define EQE_QP_TOKEN EHCA_BMASK_IBM(32, 63) -#define EQE_CQ_TOKEN EHCA_BMASK_IBM(32, 63) - -#define NEQE_COMPLETION_EVENT EHCA_BMASK_IBM( 1, 1) -#define NEQE_EVENT_CODE EHCA_BMASK_IBM( 2, 7) -#define NEQE_PORT_NUMBER EHCA_BMASK_IBM( 8, 15) -#define NEQE_PORT_AVAILABILITY EHCA_BMASK_IBM(16, 16) -#define NEQE_DISRUPTIVE EHCA_BMASK_IBM(16, 16) -#define NEQE_SPECIFIC_EVENT EHCA_BMASK_IBM(16, 23) - -#define ERROR_DATA_LENGTH EHCA_BMASK_IBM(52, 63) -#define ERROR_DATA_TYPE EHCA_BMASK_IBM( 0, 7) - -static void queue_comp_task(struct ehca_cq *__cq); - -static struct ehca_comp_pool *pool; - -static inline void comp_event_callback(struct ehca_cq *cq) -{ - if (!cq->ib_cq.comp_handler) - return; - - spin_lock(&cq->cb_lock); - cq->ib_cq.comp_handler(&cq->ib_cq, cq->ib_cq.cq_context); - spin_unlock(&cq->cb_lock); - - return; -} - -static void print_error_data(struct ehca_shca *shca, void *data, - u64 *rblock, int length) -{ - u64 type = EHCA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]); - u64 resource = rblock[1]; - - switch (type) { - case 0x1: /* Queue Pair */ - { - struct ehca_qp *qp = (struct ehca_qp *)data; - - /* only print error data if AER is set */ - if (rblock[6] == 0) - return; - - ehca_err(&shca->ib_device, - "QP 0x%x (resource=%llx) has errors.", - qp->ib_qp.qp_num, resource); - break; - } - case 0x4: /* Completion Queue */ - { - struct ehca_cq *cq = (struct ehca_cq *)data; - - ehca_err(&shca->ib_device, - "CQ 0x%x (resource=%llx) has errors.", - cq->cq_number, resource); - break; - } - default: - ehca_err(&shca->ib_device, - "Unknown error type: %llx on %s.", - type, shca->ib_device.name); - break; - } - - ehca_err(&shca->ib_device, "Error data is available: %llx.", resource); - ehca_err(&shca->ib_device, "EHCA ----- error data begin " - "---------------------------------------------------"); - ehca_dmp(rblock, length, "resource=%llx", resource); - ehca_err(&shca->ib_device, "EHCA ----- error data end " - "----------------------------------------------------"); - - return; -} - -int ehca_error_data(struct ehca_shca *shca, void *data, - u64 resource) -{ - - unsigned long ret; - u64 *rblock; - unsigned long block_count; - - rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC); - if (!rblock) { - ehca_err(&shca->ib_device, "Cannot allocate rblock memory."); - ret = -ENOMEM; - goto error_data1; - } - - /* rblock must be 4K aligned and should be 4K large */ - ret = hipz_h_error_data(shca->ipz_hca_handle, - resource, - rblock, - &block_count); - - if (ret == H_R_STATE) - ehca_err(&shca->ib_device, - "No error data is available: %llx.", resource); - else if (ret == H_SUCCESS) { - int length; - - length = EHCA_BMASK_GET(ERROR_DATA_LENGTH, rblock[0]); - - if (length > EHCA_PAGESIZE) - length = EHCA_PAGESIZE; - - print_error_data(shca, data, rblock, length); - } else - ehca_err(&shca->ib_device, - "Error data could not be fetched: %llx", resource); - - ehca_free_fw_ctrlblock(rblock); - -error_data1: - return ret; - -} - -static void dispatch_qp_event(struct ehca_shca *shca, struct ehca_qp *qp, - enum ib_event_type event_type) -{ - struct ib_event event; - - /* PATH_MIG without the QP ever having been armed is false alarm */ - if (event_type == IB_EVENT_PATH_MIG && !qp->mig_armed) - return; - - event.device = &shca->ib_device; - event.event = event_type; - - if (qp->ext_type == EQPT_SRQ) { - if (!qp->ib_srq.event_handler) - return; - - event.element.srq = &qp->ib_srq; - qp->ib_srq.event_handler(&event, qp->ib_srq.srq_context); - } else { - if (!qp->ib_qp.event_handler) - return; - - event.element.qp = &qp->ib_qp; - qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context); - } -} - -static void qp_event_callback(struct ehca_shca *shca, u64 eqe, - enum ib_event_type event_type, int fatal) -{ - struct ehca_qp *qp; - u32 token = EHCA_BMASK_GET(EQE_QP_TOKEN, eqe); - - read_lock(&ehca_qp_idr_lock); - qp = idr_find(&ehca_qp_idr, token); - if (qp) - atomic_inc(&qp->nr_events); - read_unlock(&ehca_qp_idr_lock); - - if (!qp) - return; - - if (fatal) - ehca_error_data(shca, qp, qp->ipz_qp_handle.handle); - - dispatch_qp_event(shca, qp, fatal && qp->ext_type == EQPT_SRQ ? - IB_EVENT_SRQ_ERR : event_type); - - /* - * eHCA only processes one WQE at a time for SRQ base QPs, - * so the last WQE has been processed as soon as the QP enters - * error state. - */ - if (fatal && qp->ext_type == EQPT_SRQBASE) - dispatch_qp_event(shca, qp, IB_EVENT_QP_LAST_WQE_REACHED); - - if (atomic_dec_and_test(&qp->nr_events)) - wake_up(&qp->wait_completion); - return; -} - -static void cq_event_callback(struct ehca_shca *shca, - u64 eqe) -{ - struct ehca_cq *cq; - u32 token = EHCA_BMASK_GET(EQE_CQ_TOKEN, eqe); - - read_lock(&ehca_cq_idr_lock); - cq = idr_find(&ehca_cq_idr, token); - if (cq) - atomic_inc(&cq->nr_events); - read_unlock(&ehca_cq_idr_lock); - - if (!cq) - return; - - ehca_error_data(shca, cq, cq->ipz_cq_handle.handle); - - if (atomic_dec_and_test(&cq->nr_events)) - wake_up(&cq->wait_completion); - - return; -} - -static void parse_identifier(struct ehca_shca *shca, u64 eqe) -{ - u8 identifier = EHCA_BMASK_GET(EQE_EE_IDENTIFIER, eqe); - - switch (identifier) { - case 0x02: /* path migrated */ - qp_event_callback(shca, eqe, IB_EVENT_PATH_MIG, 0); - break; - case 0x03: /* communication established */ - qp_event_callback(shca, eqe, IB_EVENT_COMM_EST, 0); - break; - case 0x04: /* send queue drained */ - qp_event_callback(shca, eqe, IB_EVENT_SQ_DRAINED, 0); - break; - case 0x05: /* QP error */ - case 0x06: /* QP error */ - qp_event_callback(shca, eqe, IB_EVENT_QP_FATAL, 1); - break; - case 0x07: /* CQ error */ - case 0x08: /* CQ error */ - cq_event_callback(shca, eqe); - break; - case 0x09: /* MRMWPTE error */ - ehca_err(&shca->ib_device, "MRMWPTE error."); - break; - case 0x0A: /* port event */ - ehca_err(&shca->ib_device, "Port event."); - break; - case 0x0B: /* MR access error */ - ehca_err(&shca->ib_device, "MR access error."); - break; - case 0x0C: /* EQ error */ - ehca_err(&shca->ib_device, "EQ error."); - break; - case 0x0D: /* P/Q_Key mismatch */ - ehca_err(&shca->ib_device, "P/Q_Key mismatch."); - break; - case 0x10: /* sampling complete */ - ehca_err(&shca->ib_device, "Sampling complete."); - break; - case 0x11: /* unaffiliated access error */ - ehca_err(&shca->ib_device, "Unaffiliated access error."); - break; - case 0x12: /* path migrating */ - ehca_err(&shca->ib_device, "Path migrating."); - break; - case 0x13: /* interface trace stopped */ - ehca_err(&shca->ib_device, "Interface trace stopped."); - break; - case 0x14: /* first error capture info available */ - ehca_info(&shca->ib_device, "First error capture available"); - break; - case 0x15: /* SRQ limit reached */ - qp_event_callback(shca, eqe, IB_EVENT_SRQ_LIMIT_REACHED, 0); - break; - default: - ehca_err(&shca->ib_device, "Unknown identifier: %x on %s.", - identifier, shca->ib_device.name); - break; - } - - return; -} - -static void dispatch_port_event(struct ehca_shca *shca, int port_num, - enum ib_event_type type, const char *msg) -{ - struct ib_event event; - - ehca_info(&shca->ib_device, "port %d %s.", port_num, msg); - event.device = &shca->ib_device; - event.event = type; - event.element.port_num = port_num; - ib_dispatch_event(&event); -} - -static void notify_port_conf_change(struct ehca_shca *shca, int port_num) -{ - struct ehca_sma_attr new_attr; - struct ehca_sma_attr *old_attr = &shca->sport[port_num - 1].saved_attr; - - ehca_query_sma_attr(shca, port_num, &new_attr); - - if (new_attr.sm_sl != old_attr->sm_sl || - new_attr.sm_lid != old_attr->sm_lid) - dispatch_port_event(shca, port_num, IB_EVENT_SM_CHANGE, - "SM changed"); - - if (new_attr.lid != old_attr->lid || - new_attr.lmc != old_attr->lmc) - dispatch_port_event(shca, port_num, IB_EVENT_LID_CHANGE, - "LID changed"); - - if (new_attr.pkey_tbl_len != old_attr->pkey_tbl_len || - memcmp(new_attr.pkeys, old_attr->pkeys, - sizeof(u16) * new_attr.pkey_tbl_len)) - dispatch_port_event(shca, port_num, IB_EVENT_PKEY_CHANGE, - "P_Key changed"); - - *old_attr = new_attr; -} - -/* replay modify_qp for sqps -- return 0 if all is well, 1 if AQP1 destroyed */ -static int replay_modify_qp(struct ehca_sport *sport) -{ - int aqp1_destroyed; - unsigned long flags; - - spin_lock_irqsave(&sport->mod_sqp_lock, flags); - - aqp1_destroyed = !sport->ibqp_sqp[IB_QPT_GSI]; - - if (sport->ibqp_sqp[IB_QPT_SMI]) - ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_SMI]); - if (!aqp1_destroyed) - ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_GSI]); - - spin_unlock_irqrestore(&sport->mod_sqp_lock, flags); - - return aqp1_destroyed; -} - -static void parse_ec(struct ehca_shca *shca, u64 eqe) -{ - u8 ec = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe); - u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe); - u8 spec_event; - struct ehca_sport *sport = &shca->sport[port - 1]; - - switch (ec) { - case 0x30: /* port availability change */ - if (EHCA_BMASK_GET(NEQE_PORT_AVAILABILITY, eqe)) { - /* only replay modify_qp calls in autodetect mode; - * if AQP1 was destroyed, the port is already down - * again and we can drop the event. - */ - if (ehca_nr_ports < 0) - if (replay_modify_qp(sport)) - break; - - sport->port_state = IB_PORT_ACTIVE; - dispatch_port_event(shca, port, IB_EVENT_PORT_ACTIVE, - "is active"); - ehca_query_sma_attr(shca, port, &sport->saved_attr); - } else { - sport->port_state = IB_PORT_DOWN; - dispatch_port_event(shca, port, IB_EVENT_PORT_ERR, - "is inactive"); - } - break; - case 0x31: - /* port configuration change - * disruptive change is caused by - * LID, PKEY or SM change - */ - if (EHCA_BMASK_GET(NEQE_DISRUPTIVE, eqe)) { - ehca_warn(&shca->ib_device, "disruptive port " - "%d configuration change", port); - - sport->port_state = IB_PORT_DOWN; - dispatch_port_event(shca, port, IB_EVENT_PORT_ERR, - "is inactive"); - - sport->port_state = IB_PORT_ACTIVE; - dispatch_port_event(shca, port, IB_EVENT_PORT_ACTIVE, - "is active"); - ehca_query_sma_attr(shca, port, - &sport->saved_attr); - } else - notify_port_conf_change(shca, port); - break; - case 0x32: /* adapter malfunction */ - ehca_err(&shca->ib_device, "Adapter malfunction."); - break; - case 0x33: /* trace stopped */ - ehca_err(&shca->ib_device, "Traced stopped."); - break; - case 0x34: /* util async event */ - spec_event = EHCA_BMASK_GET(NEQE_SPECIFIC_EVENT, eqe); - if (spec_event == 0x80) /* client reregister required */ - dispatch_port_event(shca, port, - IB_EVENT_CLIENT_REREGISTER, - "client reregister req."); - else - ehca_warn(&shca->ib_device, "Unknown util async " - "event %x on port %x", spec_event, port); - break; - default: - ehca_err(&shca->ib_device, "Unknown event code: %x on %s.", - ec, shca->ib_device.name); - break; - } - - return; -} - -static inline void reset_eq_pending(struct ehca_cq *cq) -{ - u64 CQx_EP; - struct h_galpa gal = cq->galpas.kernel; - - hipz_galpa_store_cq(gal, cqx_ep, 0x0); - CQx_EP = hipz_galpa_load(gal, CQTEMM_OFFSET(cqx_ep)); - - return; -} - -irqreturn_t ehca_interrupt_neq(int irq, void *dev_id) -{ - struct ehca_shca *shca = (struct ehca_shca*)dev_id; - - tasklet_hi_schedule(&shca->neq.interrupt_task); - - return IRQ_HANDLED; -} - -void ehca_tasklet_neq(unsigned long data) -{ - struct ehca_shca *shca = (struct ehca_shca*)data; - struct ehca_eqe *eqe; - u64 ret; - - eqe = ehca_poll_eq(shca, &shca->neq); - - while (eqe) { - if (!EHCA_BMASK_GET(NEQE_COMPLETION_EVENT, eqe->entry)) - parse_ec(shca, eqe->entry); - - eqe = ehca_poll_eq(shca, &shca->neq); - } - - ret = hipz_h_reset_event(shca->ipz_hca_handle, - shca->neq.ipz_eq_handle, 0xFFFFFFFFFFFFFFFFL); - - if (ret != H_SUCCESS) - ehca_err(&shca->ib_device, "Can't clear notification events."); - - return; -} - -irqreturn_t ehca_interrupt_eq(int irq, void *dev_id) -{ - struct ehca_shca *shca = (struct ehca_shca*)dev_id; - - tasklet_hi_schedule(&shca->eq.interrupt_task); - - return IRQ_HANDLED; -} - - -static inline void process_eqe(struct ehca_shca *shca, struct ehca_eqe *eqe) -{ - u64 eqe_value; - u32 token; - struct ehca_cq *cq; - - eqe_value = eqe->entry; - ehca_dbg(&shca->ib_device, "eqe_value=%llx", eqe_value); - if (EHCA_BMASK_GET(EQE_COMPLETION_EVENT, eqe_value)) { - ehca_dbg(&shca->ib_device, "Got completion event"); - token = EHCA_BMASK_GET(EQE_CQ_TOKEN, eqe_value); - read_lock(&ehca_cq_idr_lock); - cq = idr_find(&ehca_cq_idr, token); - if (cq) - atomic_inc(&cq->nr_events); - read_unlock(&ehca_cq_idr_lock); - if (cq == NULL) { - ehca_err(&shca->ib_device, - "Invalid eqe for non-existing cq token=%x", - token); - return; - } - reset_eq_pending(cq); - if (ehca_scaling_code) - queue_comp_task(cq); - else { - comp_event_callback(cq); - if (atomic_dec_and_test(&cq->nr_events)) - wake_up(&cq->wait_completion); - } - } else { - ehca_dbg(&shca->ib_device, "Got non completion event"); - parse_identifier(shca, eqe_value); - } -} - -void ehca_process_eq(struct ehca_shca *shca, int is_irq) -{ - struct ehca_eq *eq = &shca->eq; - struct ehca_eqe_cache_entry *eqe_cache = eq->eqe_cache; - u64 eqe_value, ret; - int eqe_cnt, i; - int eq_empty = 0; - - spin_lock(&eq->irq_spinlock); - if (is_irq) { - const int max_query_cnt = 100; - int query_cnt = 0; - int int_state = 1; - do { - int_state = hipz_h_query_int_state( - shca->ipz_hca_handle, eq->ist); - query_cnt++; - iosync(); - } while (int_state && query_cnt < max_query_cnt); - if (unlikely((query_cnt == max_query_cnt))) - ehca_dbg(&shca->ib_device, "int_state=%x query_cnt=%x", - int_state, query_cnt); - } - - /* read out all eqes */ - eqe_cnt = 0; - do { - u32 token; - eqe_cache[eqe_cnt].eqe = ehca_poll_eq(shca, eq); - if (!eqe_cache[eqe_cnt].eqe) - break; - eqe_value = eqe_cache[eqe_cnt].eqe->entry; - if (EHCA_BMASK_GET(EQE_COMPLETION_EVENT, eqe_value)) { - token = EHCA_BMASK_GET(EQE_CQ_TOKEN, eqe_value); - read_lock(&ehca_cq_idr_lock); - eqe_cache[eqe_cnt].cq = idr_find(&ehca_cq_idr, token); - if (eqe_cache[eqe_cnt].cq) - atomic_inc(&eqe_cache[eqe_cnt].cq->nr_events); - read_unlock(&ehca_cq_idr_lock); - if (!eqe_cache[eqe_cnt].cq) { - ehca_err(&shca->ib_device, - "Invalid eqe for non-existing cq " - "token=%x", token); - continue; - } - } else - eqe_cache[eqe_cnt].cq = NULL; - eqe_cnt++; - } while (eqe_cnt < EHCA_EQE_CACHE_SIZE); - if (!eqe_cnt) { - if (is_irq) - ehca_dbg(&shca->ib_device, - "No eqe found for irq event"); - goto unlock_irq_spinlock; - } else if (!is_irq) { - ret = hipz_h_eoi(eq->ist); - if (ret != H_SUCCESS) - ehca_err(&shca->ib_device, - "bad return code EOI -rc = %lld\n", ret); - ehca_dbg(&shca->ib_device, "deadman found %x eqe", eqe_cnt); - } - if (unlikely(eqe_cnt == EHCA_EQE_CACHE_SIZE)) - ehca_dbg(&shca->ib_device, "too many eqes for one irq event"); - /* enable irq for new packets */ - for (i = 0; i < eqe_cnt; i++) { - if (eq->eqe_cache[i].cq) - reset_eq_pending(eq->eqe_cache[i].cq); - } - /* check eq */ - spin_lock(&eq->spinlock); - eq_empty = (!ipz_eqit_eq_peek_valid(&shca->eq.ipz_queue)); - spin_unlock(&eq->spinlock); - /* call completion handler for cached eqes */ - for (i = 0; i < eqe_cnt; i++) - if (eq->eqe_cache[i].cq) { - if (ehca_scaling_code) - queue_comp_task(eq->eqe_cache[i].cq); - else { - struct ehca_cq *cq = eq->eqe_cache[i].cq; - comp_event_callback(cq); - if (atomic_dec_and_test(&cq->nr_events)) - wake_up(&cq->wait_completion); - } - } else { - ehca_dbg(&shca->ib_device, "Got non completion event"); - parse_identifier(shca, eq->eqe_cache[i].eqe->entry); - } - /* poll eq if not empty */ - if (eq_empty) - goto unlock_irq_spinlock; - do { - struct ehca_eqe *eqe; - eqe = ehca_poll_eq(shca, &shca->eq); - if (!eqe) - break; - process_eqe(shca, eqe); - } while (1); - -unlock_irq_spinlock: - spin_unlock(&eq->irq_spinlock); -} - -void ehca_tasklet_eq(unsigned long data) -{ - ehca_process_eq((struct ehca_shca*)data, 1); -} - -static int find_next_online_cpu(struct ehca_comp_pool *pool) -{ - int cpu; - unsigned long flags; - - WARN_ON_ONCE(!in_interrupt()); - if (ehca_debug_level >= 3) - ehca_dmp(cpu_online_mask, cpumask_size(), ""); - - spin_lock_irqsave(&pool->last_cpu_lock, flags); - do { - cpu = cpumask_next(pool->last_cpu, cpu_online_mask); - if (cpu >= nr_cpu_ids) - cpu = cpumask_first(cpu_online_mask); - pool->last_cpu = cpu; - } while (!per_cpu_ptr(pool->cpu_comp_tasks, cpu)->active); - spin_unlock_irqrestore(&pool->last_cpu_lock, flags); - - return cpu; -} - -static void __queue_comp_task(struct ehca_cq *__cq, - struct ehca_cpu_comp_task *cct, - struct task_struct *thread) -{ - unsigned long flags; - - spin_lock_irqsave(&cct->task_lock, flags); - spin_lock(&__cq->task_lock); - - if (__cq->nr_callbacks == 0) { - __cq->nr_callbacks++; - list_add_tail(&__cq->entry, &cct->cq_list); - cct->cq_jobs++; - wake_up_process(thread); - } else - __cq->nr_callbacks++; - - spin_unlock(&__cq->task_lock); - spin_unlock_irqrestore(&cct->task_lock, flags); -} - -static void queue_comp_task(struct ehca_cq *__cq) -{ - int cpu_id; - struct ehca_cpu_comp_task *cct; - struct task_struct *thread; - int cq_jobs; - unsigned long flags; - - cpu_id = find_next_online_cpu(pool); - BUG_ON(!cpu_online(cpu_id)); - - cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu_id); - thread = *per_cpu_ptr(pool->cpu_comp_threads, cpu_id); - BUG_ON(!cct || !thread); - - spin_lock_irqsave(&cct->task_lock, flags); - cq_jobs = cct->cq_jobs; - spin_unlock_irqrestore(&cct->task_lock, flags); - if (cq_jobs > 0) { - cpu_id = find_next_online_cpu(pool); - cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu_id); - thread = *per_cpu_ptr(pool->cpu_comp_threads, cpu_id); - BUG_ON(!cct || !thread); - } - __queue_comp_task(__cq, cct, thread); -} - -static void run_comp_task(struct ehca_cpu_comp_task *cct) -{ - struct ehca_cq *cq; - - while (!list_empty(&cct->cq_list)) { - cq = list_entry(cct->cq_list.next, struct ehca_cq, entry); - spin_unlock_irq(&cct->task_lock); - - comp_event_callback(cq); - if (atomic_dec_and_test(&cq->nr_events)) - wake_up(&cq->wait_completion); - - spin_lock_irq(&cct->task_lock); - spin_lock(&cq->task_lock); - cq->nr_callbacks--; - if (!cq->nr_callbacks) { - list_del_init(cct->cq_list.next); - cct->cq_jobs--; - } - spin_unlock(&cq->task_lock); - } -} - -static void comp_task_park(unsigned int cpu) -{ - struct ehca_cpu_comp_task *cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); - struct ehca_cpu_comp_task *target; - struct task_struct *thread; - struct ehca_cq *cq, *tmp; - LIST_HEAD(list); - - spin_lock_irq(&cct->task_lock); - cct->cq_jobs = 0; - cct->active = 0; - list_splice_init(&cct->cq_list, &list); - spin_unlock_irq(&cct->task_lock); - - cpu = find_next_online_cpu(pool); - target = per_cpu_ptr(pool->cpu_comp_tasks, cpu); - thread = *per_cpu_ptr(pool->cpu_comp_threads, cpu); - spin_lock_irq(&target->task_lock); - list_for_each_entry_safe(cq, tmp, &list, entry) { - list_del(&cq->entry); - __queue_comp_task(cq, target, thread); - } - spin_unlock_irq(&target->task_lock); -} - -static void comp_task_stop(unsigned int cpu, bool online) -{ - struct ehca_cpu_comp_task *cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); - - spin_lock_irq(&cct->task_lock); - cct->cq_jobs = 0; - cct->active = 0; - WARN_ON(!list_empty(&cct->cq_list)); - spin_unlock_irq(&cct->task_lock); -} - -static int comp_task_should_run(unsigned int cpu) -{ - struct ehca_cpu_comp_task *cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); - - return cct->cq_jobs; -} - -static void comp_task(unsigned int cpu) -{ - struct ehca_cpu_comp_task *cct = this_cpu_ptr(pool->cpu_comp_tasks); - int cql_empty; - - spin_lock_irq(&cct->task_lock); - cql_empty = list_empty(&cct->cq_list); - if (!cql_empty) { - __set_current_state(TASK_RUNNING); - run_comp_task(cct); - } - spin_unlock_irq(&cct->task_lock); -} - -static struct smp_hotplug_thread comp_pool_threads = { - .thread_should_run = comp_task_should_run, - .thread_fn = comp_task, - .thread_comm = "ehca_comp/%u", - .cleanup = comp_task_stop, - .park = comp_task_park, -}; - -int ehca_create_comp_pool(void) -{ - int cpu, ret = -ENOMEM; - - if (!ehca_scaling_code) - return 0; - - pool = kzalloc(sizeof(struct ehca_comp_pool), GFP_KERNEL); - if (pool == NULL) - return -ENOMEM; - - spin_lock_init(&pool->last_cpu_lock); - pool->last_cpu = cpumask_any(cpu_online_mask); - - pool->cpu_comp_tasks = alloc_percpu(struct ehca_cpu_comp_task); - if (!pool->cpu_comp_tasks) - goto out_pool; - - pool->cpu_comp_threads = alloc_percpu(struct task_struct *); - if (!pool->cpu_comp_threads) - goto out_tasks; - - for_each_present_cpu(cpu) { - struct ehca_cpu_comp_task *cct; - - cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu); - spin_lock_init(&cct->task_lock); - INIT_LIST_HEAD(&cct->cq_list); - } - - comp_pool_threads.store = pool->cpu_comp_threads; - ret = smpboot_register_percpu_thread(&comp_pool_threads); - if (ret) - goto out_threads; - - pr_info("eHCA scaling code enabled\n"); - return ret; - -out_threads: - free_percpu(pool->cpu_comp_threads); -out_tasks: - free_percpu(pool->cpu_comp_tasks); -out_pool: - kfree(pool); - return ret; -} - -void ehca_destroy_comp_pool(void) -{ - if (!ehca_scaling_code) - return; - - smpboot_unregister_percpu_thread(&comp_pool_threads); - - free_percpu(pool->cpu_comp_threads); - free_percpu(pool->cpu_comp_tasks); - kfree(pool); -} diff --git a/drivers/staging/rdma/ehca/ehca_irq.h b/drivers/staging/rdma/ehca/ehca_irq.h deleted file mode 100644 index 5370199f08c7..000000000000 --- a/drivers/staging/rdma/ehca/ehca_irq.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Function definitions and structs for EQs, NEQs and interrupts - * - * Authors: Heiko J Schick - * Khadija Souissi - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __EHCA_IRQ_H -#define __EHCA_IRQ_H - - -struct ehca_shca; - -#include -#include - -int ehca_error_data(struct ehca_shca *shca, void *data, u64 resource); - -irqreturn_t ehca_interrupt_neq(int irq, void *dev_id); -void ehca_tasklet_neq(unsigned long data); - -irqreturn_t ehca_interrupt_eq(int irq, void *dev_id); -void ehca_tasklet_eq(unsigned long data); -void ehca_process_eq(struct ehca_shca *shca, int is_irq); - -struct ehca_cpu_comp_task { - struct list_head cq_list; - spinlock_t task_lock; - int cq_jobs; - int active; -}; - -struct ehca_comp_pool { - struct ehca_cpu_comp_task __percpu *cpu_comp_tasks; - struct task_struct * __percpu *cpu_comp_threads; - int last_cpu; - spinlock_t last_cpu_lock; -}; - -int ehca_create_comp_pool(void); -void ehca_destroy_comp_pool(void); - -#endif diff --git a/drivers/staging/rdma/ehca/ehca_iverbs.h b/drivers/staging/rdma/ehca/ehca_iverbs.h deleted file mode 100644 index cca5933fcda6..000000000000 --- a/drivers/staging/rdma/ehca/ehca_iverbs.h +++ /dev/null @@ -1,202 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Function definitions for internal functions - * - * Authors: Heiko J Schick - * Dietmar Decker - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __EHCA_IVERBS_H__ -#define __EHCA_IVERBS_H__ - -#include "ehca_classes.h" - -int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props, - struct ib_udata *uhw); - -int ehca_query_port(struct ib_device *ibdev, u8 port, - struct ib_port_attr *props); - -enum rdma_protocol_type -ehca_query_protocol(struct ib_device *device, u8 port_num); - -int ehca_query_sma_attr(struct ehca_shca *shca, u8 port, - struct ehca_sma_attr *attr); - -int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 * pkey); - -int ehca_query_gid(struct ib_device *ibdev, u8 port, int index, - union ib_gid *gid); - -int ehca_modify_port(struct ib_device *ibdev, u8 port, int port_modify_mask, - struct ib_port_modify *props); - -struct ib_pd *ehca_alloc_pd(struct ib_device *device, - struct ib_ucontext *context, - struct ib_udata *udata); - -int ehca_dealloc_pd(struct ib_pd *pd); - -struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); - -int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); - -int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); - -int ehca_destroy_ah(struct ib_ah *ah); - -struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags); - -struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, - u64 virt, int mr_access_flags, - struct ib_udata *udata); - -int ehca_dereg_mr(struct ib_mr *mr); - -struct ib_mw *ehca_alloc_mw(struct ib_pd *pd, enum ib_mw_type type); - -int ehca_dealloc_mw(struct ib_mw *mw); - -struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd, - int mr_access_flags, - struct ib_fmr_attr *fmr_attr); - -int ehca_map_phys_fmr(struct ib_fmr *fmr, - u64 *page_list, int list_len, u64 iova); - -int ehca_unmap_fmr(struct list_head *fmr_list); - -int ehca_dealloc_fmr(struct ib_fmr *fmr); - -enum ehca_eq_type { - EHCA_EQ = 0, /* Event Queue */ - EHCA_NEQ /* Notification Event Queue */ -}; - -int ehca_create_eq(struct ehca_shca *shca, struct ehca_eq *eq, - enum ehca_eq_type type, const u32 length); - -int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq); - -void *ehca_poll_eq(struct ehca_shca *shca, struct ehca_eq *eq); - - -struct ib_cq *ehca_create_cq(struct ib_device *device, - const struct ib_cq_init_attr *attr, - struct ib_ucontext *context, - struct ib_udata *udata); - -int ehca_destroy_cq(struct ib_cq *cq); - -int ehca_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata); - -int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc); - -int ehca_peek_cq(struct ib_cq *cq, int wc_cnt); - -int ehca_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags notify_flags); - -struct ib_qp *ehca_create_qp(struct ib_pd *pd, - struct ib_qp_init_attr *init_attr, - struct ib_udata *udata); - -int ehca_destroy_qp(struct ib_qp *qp); - -int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, - struct ib_udata *udata); - -int ehca_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, - int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr); - -int ehca_post_send(struct ib_qp *qp, struct ib_send_wr *send_wr, - struct ib_send_wr **bad_send_wr); - -int ehca_post_recv(struct ib_qp *qp, struct ib_recv_wr *recv_wr, - struct ib_recv_wr **bad_recv_wr); - -int ehca_post_srq_recv(struct ib_srq *srq, - struct ib_recv_wr *recv_wr, - struct ib_recv_wr **bad_recv_wr); - -struct ib_srq *ehca_create_srq(struct ib_pd *pd, - struct ib_srq_init_attr *init_attr, - struct ib_udata *udata); - -int ehca_modify_srq(struct ib_srq *srq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); - -int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr); - -int ehca_destroy_srq(struct ib_srq *srq); - -u64 ehca_define_sqp(struct ehca_shca *shca, struct ehca_qp *ibqp, - struct ib_qp_init_attr *qp_init_attr); - -int ehca_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); - -int ehca_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); - -struct ib_ucontext *ehca_alloc_ucontext(struct ib_device *device, - struct ib_udata *udata); - -int ehca_dealloc_ucontext(struct ib_ucontext *context); - -int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); - -int ehca_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, - const struct ib_wc *in_wc, const struct ib_grh *in_grh, - const struct ib_mad_hdr *in, size_t in_mad_size, - struct ib_mad_hdr *out, size_t *out_mad_size, - u16 *out_mad_pkey_index); - -void ehca_poll_eqs(unsigned long data); - -int ehca_calc_ipd(struct ehca_shca *shca, int port, - enum ib_rate path_rate, u32 *ipd); - -void ehca_add_to_err_list(struct ehca_qp *qp, int on_sq); - -#ifdef CONFIG_PPC_64K_PAGES -void *ehca_alloc_fw_ctrlblock(gfp_t flags); -void ehca_free_fw_ctrlblock(void *ptr); -#else -#define ehca_alloc_fw_ctrlblock(flags) ((void *)get_zeroed_page(flags)) -#define ehca_free_fw_ctrlblock(ptr) free_page((unsigned long)(ptr)) -#endif - -void ehca_recover_sqp(struct ib_qp *sqp); - -#endif diff --git a/drivers/staging/rdma/ehca/ehca_main.c b/drivers/staging/rdma/ehca/ehca_main.c deleted file mode 100644 index 832f22f40862..000000000000 --- a/drivers/staging/rdma/ehca/ehca_main.c +++ /dev/null @@ -1,1118 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * module start stop, hca detection - * - * Authors: Heiko J Schick - * Hoang-Nam Nguyen - * Joachim Fenkes - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifdef CONFIG_PPC_64K_PAGES -#include -#endif - -#include -#include -#include -#include "ehca_classes.h" -#include "ehca_iverbs.h" -#include "ehca_mrmw.h" -#include "ehca_tools.h" -#include "hcp_if.h" - -#define HCAD_VERSION "0029" - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_AUTHOR("Christoph Raisch "); -MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); -MODULE_VERSION(HCAD_VERSION); - -static bool ehca_open_aqp1 = 0; -static int ehca_hw_level = 0; -static bool ehca_poll_all_eqs = 1; - -int ehca_debug_level = 0; -int ehca_nr_ports = -1; -bool ehca_use_hp_mr = 0; -int ehca_port_act_time = 30; -int ehca_static_rate = -1; -bool ehca_scaling_code = 0; -int ehca_lock_hcalls = -1; -int ehca_max_cq = -1; -int ehca_max_qp = -1; - -module_param_named(open_aqp1, ehca_open_aqp1, bool, S_IRUGO); -module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); -module_param_named(hw_level, ehca_hw_level, int, S_IRUGO); -module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO); -module_param_named(use_hp_mr, ehca_use_hp_mr, bool, S_IRUGO); -module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO); -module_param_named(poll_all_eqs, ehca_poll_all_eqs, bool, S_IRUGO); -module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); -module_param_named(scaling_code, ehca_scaling_code, bool, S_IRUGO); -module_param_named(lock_hcalls, ehca_lock_hcalls, bint, S_IRUGO); -module_param_named(number_of_cqs, ehca_max_cq, int, S_IRUGO); -module_param_named(number_of_qps, ehca_max_qp, int, S_IRUGO); - -MODULE_PARM_DESC(open_aqp1, - "Open AQP1 on startup (default: no)"); -MODULE_PARM_DESC(debug_level, - "Amount of debug output (0: none (default), 1: traces, " - "2: some dumps, 3: lots)"); -MODULE_PARM_DESC(hw_level, - "Hardware level (0: autosensing (default), " - "0x10..0x14: eHCA, 0x20..0x23: eHCA2)"); -MODULE_PARM_DESC(nr_ports, - "number of connected ports (-1: autodetect (default), " - "1: port one only, 2: two ports)"); -MODULE_PARM_DESC(use_hp_mr, - "Use high performance MRs (default: no)"); -MODULE_PARM_DESC(port_act_time, - "Time to wait for port activation (default: 30 sec)"); -MODULE_PARM_DESC(poll_all_eqs, - "Poll all event queues periodically (default: yes)"); -MODULE_PARM_DESC(static_rate, - "Set permanent static rate (default: no static rate)"); -MODULE_PARM_DESC(scaling_code, - "Enable scaling code (default: no)"); -MODULE_PARM_DESC(lock_hcalls, - "Serialize all hCalls made by the driver " - "(default: autodetect)"); -MODULE_PARM_DESC(number_of_cqs, - "Max number of CQs which can be allocated " - "(default: autodetect)"); -MODULE_PARM_DESC(number_of_qps, - "Max number of QPs which can be allocated " - "(default: autodetect)"); - -DEFINE_RWLOCK(ehca_qp_idr_lock); -DEFINE_RWLOCK(ehca_cq_idr_lock); -DEFINE_IDR(ehca_qp_idr); -DEFINE_IDR(ehca_cq_idr); - -static LIST_HEAD(shca_list); /* list of all registered ehcas */ -DEFINE_SPINLOCK(shca_list_lock); - -static struct timer_list poll_eqs_timer; - -#ifdef CONFIG_PPC_64K_PAGES -static struct kmem_cache *ctblk_cache; - -void *ehca_alloc_fw_ctrlblock(gfp_t flags) -{ - void *ret = kmem_cache_zalloc(ctblk_cache, flags); - if (!ret) - ehca_gen_err("Out of memory for ctblk"); - return ret; -} - -void ehca_free_fw_ctrlblock(void *ptr) -{ - if (ptr) - kmem_cache_free(ctblk_cache, ptr); - -} -#endif - -int ehca2ib_return_code(u64 ehca_rc) -{ - switch (ehca_rc) { - case H_SUCCESS: - return 0; - case H_RESOURCE: /* Resource in use */ - case H_BUSY: - return -EBUSY; - case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ - case H_CONSTRAINED: /* resource constraint */ - case H_NO_MEM: - return -ENOMEM; - default: - return -EINVAL; - } -} - -static int ehca_create_slab_caches(void) -{ - int ret; - - ret = ehca_init_pd_cache(); - if (ret) { - ehca_gen_err("Cannot create PD SLAB cache."); - return ret; - } - - ret = ehca_init_cq_cache(); - if (ret) { - ehca_gen_err("Cannot create CQ SLAB cache."); - goto create_slab_caches2; - } - - ret = ehca_init_qp_cache(); - if (ret) { - ehca_gen_err("Cannot create QP SLAB cache."); - goto create_slab_caches3; - } - - ret = ehca_init_av_cache(); - if (ret) { - ehca_gen_err("Cannot create AV SLAB cache."); - goto create_slab_caches4; - } - - ret = ehca_init_mrmw_cache(); - if (ret) { - ehca_gen_err("Cannot create MR&MW SLAB cache."); - goto create_slab_caches5; - } - - ret = ehca_init_small_qp_cache(); - if (ret) { - ehca_gen_err("Cannot create small queue SLAB cache."); - goto create_slab_caches6; - } - -#ifdef CONFIG_PPC_64K_PAGES - ctblk_cache = kmem_cache_create("ehca_cache_ctblk", - EHCA_PAGESIZE, H_CB_ALIGNMENT, - SLAB_HWCACHE_ALIGN, - NULL); - if (!ctblk_cache) { - ehca_gen_err("Cannot create ctblk SLAB cache."); - ehca_cleanup_small_qp_cache(); - ret = -ENOMEM; - goto create_slab_caches6; - } -#endif - return 0; - -create_slab_caches6: - ehca_cleanup_mrmw_cache(); - -create_slab_caches5: - ehca_cleanup_av_cache(); - -create_slab_caches4: - ehca_cleanup_qp_cache(); - -create_slab_caches3: - ehca_cleanup_cq_cache(); - -create_slab_caches2: - ehca_cleanup_pd_cache(); - - return ret; -} - -static void ehca_destroy_slab_caches(void) -{ - ehca_cleanup_small_qp_cache(); - ehca_cleanup_mrmw_cache(); - ehca_cleanup_av_cache(); - ehca_cleanup_qp_cache(); - ehca_cleanup_cq_cache(); - ehca_cleanup_pd_cache(); -#ifdef CONFIG_PPC_64K_PAGES - kmem_cache_destroy(ctblk_cache); -#endif -} - -#define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) -#define EHCA_REVID EHCA_BMASK_IBM(40, 63) - -static struct cap_descr { - u64 mask; - char *descr; -} hca_cap_descr[] = { - { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, - { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, - { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, - { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, - { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, - { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, - { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, - { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, - { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, - { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, - { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, - { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, - { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, - { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, - { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, - { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, - { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, - { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" }, -}; - -static int ehca_sense_attributes(struct ehca_shca *shca) -{ - int i, ret = 0; - u64 h_ret; - struct hipz_query_hca *rblock; - struct hipz_query_port *port; - const char *loc_code; - - static const u32 pgsize_map[] = { - HCA_CAP_MR_PGSIZE_4K, 0x1000, - HCA_CAP_MR_PGSIZE_64K, 0x10000, - HCA_CAP_MR_PGSIZE_1M, 0x100000, - HCA_CAP_MR_PGSIZE_16M, 0x1000000, - }; - - ehca_gen_dbg("Probing adapter %s...", - shca->ofdev->dev.of_node->full_name); - loc_code = of_get_property(shca->ofdev->dev.of_node, "ibm,loc-code", - NULL); - if (loc_code) - ehca_gen_dbg(" ... location lode=%s", loc_code); - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_gen_err("Cannot allocate rblock memory."); - return -ENOMEM; - } - - h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); - if (h_ret != H_SUCCESS) { - ehca_gen_err("Cannot query device properties. h_ret=%lli", - h_ret); - ret = -EPERM; - goto sense_attributes1; - } - - if (ehca_nr_ports == 1) - shca->num_ports = 1; - else - shca->num_ports = (u8)rblock->num_ports; - - ehca_gen_dbg(" ... found %x ports", rblock->num_ports); - - if (ehca_hw_level == 0) { - u32 hcaaver; - u32 revid; - - hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); - revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); - - ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); - - if (hcaaver == 1) { - if (revid <= 3) - shca->hw_level = 0x10 | (revid + 1); - else - shca->hw_level = 0x14; - } else if (hcaaver == 2) { - if (revid == 0) - shca->hw_level = 0x21; - else if (revid == 0x10) - shca->hw_level = 0x22; - else if (revid == 0x20 || revid == 0x21) - shca->hw_level = 0x23; - } - - if (!shca->hw_level) { - ehca_gen_warn("unknown hardware version" - " - assuming default level"); - shca->hw_level = 0x22; - } - } else - shca->hw_level = ehca_hw_level; - ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); - - shca->hca_cap = rblock->hca_cap_indicators; - ehca_gen_dbg(" ... HCA capabilities:"); - for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) - if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) - ehca_gen_dbg(" %s", hca_cap_descr[i].descr); - - /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is - * a firmware property, so it's valid across all adapters - */ - if (ehca_lock_hcalls == -1) - ehca_lock_hcalls = !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC, - shca->hca_cap); - - /* translate supported MR page sizes; always support 4K */ - shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; - for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) - if (rblock->memory_page_size_supported & pgsize_map[i]) - shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; - - /* Set maximum number of CQs and QPs to calculate EQ size */ - if (shca->max_num_qps == -1) - shca->max_num_qps = min_t(int, rblock->max_qp, - EHCA_MAX_NUM_QUEUES); - else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) { - ehca_gen_warn("The requested number of QPs is out of range " - "(1 - %i) specified by HW. Value is set to %i", - rblock->max_qp, rblock->max_qp); - shca->max_num_qps = rblock->max_qp; - } - - if (shca->max_num_cqs == -1) - shca->max_num_cqs = min_t(int, rblock->max_cq, - EHCA_MAX_NUM_QUEUES); - else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) { - ehca_gen_warn("The requested number of CQs is out of range " - "(1 - %i) specified by HW. Value is set to %i", - rblock->max_cq, rblock->max_cq); - } - - /* query max MTU from first port -- it's the same for all ports */ - port = (struct hipz_query_port *)rblock; - h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); - if (h_ret != H_SUCCESS) { - ehca_gen_err("Cannot query port properties. h_ret=%lli", - h_ret); - ret = -EPERM; - goto sense_attributes1; - } - - shca->max_mtu = port->max_mtu; - -sense_attributes1: - ehca_free_fw_ctrlblock(rblock); - return ret; -} - -static int init_node_guid(struct ehca_shca *shca) -{ - int ret = 0; - struct hipz_query_hca *rblock; - - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!rblock) { - ehca_err(&shca->ib_device, "Can't allocate rblock memory."); - return -ENOMEM; - } - - if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { - ehca_err(&shca->ib_device, "Can't query device properties"); - ret = -EINVAL; - goto init_node_guid1; - } - - memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); - -init_node_guid1: - ehca_free_fw_ctrlblock(rblock); - return ret; -} - -static int ehca_port_immutable(struct ib_device *ibdev, u8 port_num, - struct ib_port_immutable *immutable) -{ - struct ib_port_attr attr; - int err; - - err = ehca_query_port(ibdev, port_num, &attr); - if (err) - return err; - - immutable->pkey_tbl_len = attr.pkey_tbl_len; - immutable->gid_tbl_len = attr.gid_tbl_len; - immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; - immutable->max_mad_size = IB_MGMT_MAD_SIZE; - - return 0; -} - -static int ehca_init_device(struct ehca_shca *shca) -{ - int ret; - - ret = init_node_guid(shca); - if (ret) - return ret; - - strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); - shca->ib_device.owner = THIS_MODULE; - - shca->ib_device.uverbs_abi_ver = 8; - shca->ib_device.uverbs_cmd_mask = - (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | - (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | - (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | - (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_REG_MR) | - (1ull << IB_USER_VERBS_CMD_DEREG_MR) | - (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | - (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | - (1ull << IB_USER_VERBS_CMD_CREATE_QP) | - (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | - (1ull << IB_USER_VERBS_CMD_QUERY_QP) | - (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | - (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | - (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); - - shca->ib_device.node_type = RDMA_NODE_IB_CA; - shca->ib_device.phys_port_cnt = shca->num_ports; - shca->ib_device.num_comp_vectors = 1; - shca->ib_device.dma_device = &shca->ofdev->dev; - shca->ib_device.query_device = ehca_query_device; - shca->ib_device.query_port = ehca_query_port; - shca->ib_device.query_gid = ehca_query_gid; - shca->ib_device.query_pkey = ehca_query_pkey; - /* shca->in_device.modify_device = ehca_modify_device */ - shca->ib_device.modify_port = ehca_modify_port; - shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; - shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; - shca->ib_device.alloc_pd = ehca_alloc_pd; - shca->ib_device.dealloc_pd = ehca_dealloc_pd; - shca->ib_device.create_ah = ehca_create_ah; - /* shca->ib_device.modify_ah = ehca_modify_ah; */ - shca->ib_device.query_ah = ehca_query_ah; - shca->ib_device.destroy_ah = ehca_destroy_ah; - shca->ib_device.create_qp = ehca_create_qp; - shca->ib_device.modify_qp = ehca_modify_qp; - shca->ib_device.query_qp = ehca_query_qp; - shca->ib_device.destroy_qp = ehca_destroy_qp; - shca->ib_device.post_send = ehca_post_send; - shca->ib_device.post_recv = ehca_post_recv; - shca->ib_device.create_cq = ehca_create_cq; - shca->ib_device.destroy_cq = ehca_destroy_cq; - shca->ib_device.resize_cq = ehca_resize_cq; - shca->ib_device.poll_cq = ehca_poll_cq; - /* shca->ib_device.peek_cq = ehca_peek_cq; */ - shca->ib_device.req_notify_cq = ehca_req_notify_cq; - /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ - shca->ib_device.get_dma_mr = ehca_get_dma_mr; - shca->ib_device.reg_user_mr = ehca_reg_user_mr; - shca->ib_device.dereg_mr = ehca_dereg_mr; - shca->ib_device.alloc_mw = ehca_alloc_mw; - shca->ib_device.dealloc_mw = ehca_dealloc_mw; - shca->ib_device.alloc_fmr = ehca_alloc_fmr; - shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; - shca->ib_device.unmap_fmr = ehca_unmap_fmr; - shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; - shca->ib_device.attach_mcast = ehca_attach_mcast; - shca->ib_device.detach_mcast = ehca_detach_mcast; - shca->ib_device.process_mad = ehca_process_mad; - shca->ib_device.mmap = ehca_mmap; - shca->ib_device.dma_ops = &ehca_dma_mapping_ops; - shca->ib_device.get_port_immutable = ehca_port_immutable; - - if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { - shca->ib_device.uverbs_cmd_mask |= - (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | - (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | - (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); - - shca->ib_device.create_srq = ehca_create_srq; - shca->ib_device.modify_srq = ehca_modify_srq; - shca->ib_device.query_srq = ehca_query_srq; - shca->ib_device.destroy_srq = ehca_destroy_srq; - shca->ib_device.post_srq_recv = ehca_post_srq_recv; - } - - return ret; -} - -static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) -{ - struct ehca_sport *sport = &shca->sport[port - 1]; - struct ib_cq *ibcq; - struct ib_qp *ibqp; - struct ib_qp_init_attr qp_init_attr; - struct ib_cq_init_attr cq_attr = {}; - int ret; - - if (sport->ibcq_aqp1) { - ehca_err(&shca->ib_device, "AQP1 CQ is already created."); - return -EPERM; - } - - cq_attr.cqe = 10; - ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), - &cq_attr); - if (IS_ERR(ibcq)) { - ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); - return PTR_ERR(ibcq); - } - sport->ibcq_aqp1 = ibcq; - - if (sport->ibqp_sqp[IB_QPT_GSI]) { - ehca_err(&shca->ib_device, "AQP1 QP is already created."); - ret = -EPERM; - goto create_aqp1; - } - - memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); - qp_init_attr.send_cq = ibcq; - qp_init_attr.recv_cq = ibcq; - qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; - qp_init_attr.cap.max_send_wr = 100; - qp_init_attr.cap.max_recv_wr = 100; - qp_init_attr.cap.max_send_sge = 2; - qp_init_attr.cap.max_recv_sge = 1; - qp_init_attr.qp_type = IB_QPT_GSI; - qp_init_attr.port_num = port; - qp_init_attr.qp_context = NULL; - qp_init_attr.event_handler = NULL; - qp_init_attr.srq = NULL; - - ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); - if (IS_ERR(ibqp)) { - ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); - ret = PTR_ERR(ibqp); - goto create_aqp1; - } - sport->ibqp_sqp[IB_QPT_GSI] = ibqp; - - return 0; - -create_aqp1: - ib_destroy_cq(sport->ibcq_aqp1); - return ret; -} - -static int ehca_destroy_aqp1(struct ehca_sport *sport) -{ - int ret; - - ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); - if (ret) { - ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); - return ret; - } - - ret = ib_destroy_cq(sport->ibcq_aqp1); - if (ret) - ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); - - return ret; -} - -static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) -{ - return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level); -} - -static ssize_t ehca_store_debug_level(struct device_driver *ddp, - const char *buf, size_t count) -{ - int value = (*buf) - '0'; - if (value >= 0 && value <= 9) - ehca_debug_level = value; - return 1; -} - -static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, - ehca_show_debug_level, ehca_store_debug_level); - -static struct attribute *ehca_drv_attrs[] = { - &driver_attr_debug_level.attr, - NULL -}; - -static struct attribute_group ehca_drv_attr_grp = { - .attrs = ehca_drv_attrs -}; - -static const struct attribute_group *ehca_drv_attr_groups[] = { - &ehca_drv_attr_grp, - NULL, -}; - -#define EHCA_RESOURCE_ATTR(name) \ -static ssize_t ehca_show_##name(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - struct ehca_shca *shca; \ - struct hipz_query_hca *rblock; \ - int data; \ - \ - shca = dev_get_drvdata(dev); \ - \ - rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ - if (!rblock) { \ - dev_err(dev, "Can't allocate rblock memory.\n"); \ - return 0; \ - } \ - \ - if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ - dev_err(dev, "Can't query device properties\n"); \ - ehca_free_fw_ctrlblock(rblock); \ - return 0; \ - } \ - \ - data = rblock->name; \ - ehca_free_fw_ctrlblock(rblock); \ - \ - if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ - return snprintf(buf, 256, "1\n"); \ - else \ - return snprintf(buf, 256, "%d\n", data); \ - \ -} \ -static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); - -EHCA_RESOURCE_ATTR(num_ports); -EHCA_RESOURCE_ATTR(hw_ver); -EHCA_RESOURCE_ATTR(max_eq); -EHCA_RESOURCE_ATTR(cur_eq); -EHCA_RESOURCE_ATTR(max_cq); -EHCA_RESOURCE_ATTR(cur_cq); -EHCA_RESOURCE_ATTR(max_qp); -EHCA_RESOURCE_ATTR(cur_qp); -EHCA_RESOURCE_ATTR(max_mr); -EHCA_RESOURCE_ATTR(cur_mr); -EHCA_RESOURCE_ATTR(max_mw); -EHCA_RESOURCE_ATTR(cur_mw); -EHCA_RESOURCE_ATTR(max_pd); -EHCA_RESOURCE_ATTR(max_ah); - -static ssize_t ehca_show_adapter_handle(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ehca_shca *shca = dev_get_drvdata(dev); - - return sprintf(buf, "%llx\n", shca->ipz_hca_handle.handle); - -} -static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); - -static struct attribute *ehca_dev_attrs[] = { - &dev_attr_adapter_handle.attr, - &dev_attr_num_ports.attr, - &dev_attr_hw_ver.attr, - &dev_attr_max_eq.attr, - &dev_attr_cur_eq.attr, - &dev_attr_max_cq.attr, - &dev_attr_cur_cq.attr, - &dev_attr_max_qp.attr, - &dev_attr_cur_qp.attr, - &dev_attr_max_mr.attr, - &dev_attr_cur_mr.attr, - &dev_attr_max_mw.attr, - &dev_attr_cur_mw.attr, - &dev_attr_max_pd.attr, - &dev_attr_max_ah.attr, - NULL -}; - -static struct attribute_group ehca_dev_attr_grp = { - .attrs = ehca_dev_attrs -}; - -static int ehca_probe(struct platform_device *dev) -{ - struct ehca_shca *shca; - const u64 *handle; - struct ib_pd *ibpd; - int ret, i, eq_size; - unsigned long flags; - - handle = of_get_property(dev->dev.of_node, "ibm,hca-handle", NULL); - if (!handle) { - ehca_gen_err("Cannot get eHCA handle for adapter: %s.", - dev->dev.of_node->full_name); - return -ENODEV; - } - - if (!(*handle)) { - ehca_gen_err("Wrong eHCA handle for adapter: %s.", - dev->dev.of_node->full_name); - return -ENODEV; - } - - shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); - if (!shca) { - ehca_gen_err("Cannot allocate shca memory."); - return -ENOMEM; - } - - mutex_init(&shca->modify_mutex); - atomic_set(&shca->num_cqs, 0); - atomic_set(&shca->num_qps, 0); - shca->max_num_qps = ehca_max_qp; - shca->max_num_cqs = ehca_max_cq; - - for (i = 0; i < ARRAY_SIZE(shca->sport); i++) - spin_lock_init(&shca->sport[i].mod_sqp_lock); - - shca->ofdev = dev; - shca->ipz_hca_handle.handle = *handle; - dev_set_drvdata(&dev->dev, shca); - - ret = ehca_sense_attributes(shca); - if (ret < 0) { - ehca_gen_err("Cannot sense eHCA attributes."); - goto probe1; - } - - ret = ehca_init_device(shca); - if (ret) { - ehca_gen_err("Cannot init ehca device struct"); - goto probe1; - } - - eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps; - /* create event queues */ - ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); - if (ret) { - ehca_err(&shca->ib_device, "Cannot create EQ."); - goto probe1; - } - - ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); - if (ret) { - ehca_err(&shca->ib_device, "Cannot create NEQ."); - goto probe3; - } - - /* create internal protection domain */ - ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); - if (IS_ERR(ibpd)) { - ehca_err(&shca->ib_device, "Cannot create internal PD."); - ret = PTR_ERR(ibpd); - goto probe4; - } - - shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); - shca->pd->ib_pd.device = &shca->ib_device; - - /* create internal max MR */ - ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); - - if (ret) { - ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", - ret); - goto probe5; - } - - ret = ib_register_device(&shca->ib_device, NULL); - if (ret) { - ehca_err(&shca->ib_device, - "ib_register_device() failed ret=%i", ret); - goto probe6; - } - - /* create AQP1 for port 1 */ - if (ehca_open_aqp1 == 1) { - shca->sport[0].port_state = IB_PORT_DOWN; - ret = ehca_create_aqp1(shca, 1); - if (ret) { - ehca_err(&shca->ib_device, - "Cannot create AQP1 for port 1."); - goto probe7; - } - } - - /* create AQP1 for port 2 */ - if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { - shca->sport[1].port_state = IB_PORT_DOWN; - ret = ehca_create_aqp1(shca, 2); - if (ret) { - ehca_err(&shca->ib_device, - "Cannot create AQP1 for port 2."); - goto probe8; - } - } - - ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); - if (ret) /* only complain; we can live without attributes */ - ehca_err(&shca->ib_device, - "Cannot create device attributes ret=%d", ret); - - spin_lock_irqsave(&shca_list_lock, flags); - list_add(&shca->shca_list, &shca_list); - spin_unlock_irqrestore(&shca_list_lock, flags); - - return 0; - -probe8: - ret = ehca_destroy_aqp1(&shca->sport[0]); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy AQP1 for port 1. ret=%i", ret); - -probe7: - ib_unregister_device(&shca->ib_device); - -probe6: - ret = ehca_dereg_internal_maxmr(shca); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy internal MR. ret=%x", ret); - -probe5: - ret = ehca_dealloc_pd(&shca->pd->ib_pd); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy internal PD. ret=%x", ret); - -probe4: - ret = ehca_destroy_eq(shca, &shca->neq); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy NEQ. ret=%x", ret); - -probe3: - ret = ehca_destroy_eq(shca, &shca->eq); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy EQ. ret=%x", ret); - -probe1: - ib_dealloc_device(&shca->ib_device); - - return -EINVAL; -} - -static int ehca_remove(struct platform_device *dev) -{ - struct ehca_shca *shca = dev_get_drvdata(&dev->dev); - unsigned long flags; - int ret; - - sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); - - if (ehca_open_aqp1 == 1) { - int i; - for (i = 0; i < shca->num_ports; i++) { - ret = ehca_destroy_aqp1(&shca->sport[i]); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy AQP1 for port %x " - "ret=%i", ret, i); - } - } - - ib_unregister_device(&shca->ib_device); - - ret = ehca_dereg_internal_maxmr(shca); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy internal MR. ret=%i", ret); - - ret = ehca_dealloc_pd(&shca->pd->ib_pd); - if (ret) - ehca_err(&shca->ib_device, - "Cannot destroy internal PD. ret=%i", ret); - - ret = ehca_destroy_eq(shca, &shca->eq); - if (ret) - ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); - - ret = ehca_destroy_eq(shca, &shca->neq); - if (ret) - ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); - - ib_dealloc_device(&shca->ib_device); - - spin_lock_irqsave(&shca_list_lock, flags); - list_del(&shca->shca_list); - spin_unlock_irqrestore(&shca_list_lock, flags); - - return ret; -} - -static struct of_device_id ehca_device_table[] = -{ - { - .name = "lhca", - .compatible = "IBM,lhca", - }, - {}, -}; -MODULE_DEVICE_TABLE(of, ehca_device_table); - -static struct platform_driver ehca_driver = { - .probe = ehca_probe, - .remove = ehca_remove, - .driver = { - .name = "ehca", - .owner = THIS_MODULE, - .groups = ehca_drv_attr_groups, - .of_match_table = ehca_device_table, - }, -}; - -void ehca_poll_eqs(unsigned long data) -{ - struct ehca_shca *shca; - - spin_lock(&shca_list_lock); - list_for_each_entry(shca, &shca_list, shca_list) { - if (shca->eq.is_initialized) { - /* call deadman proc only if eq ptr does not change */ - struct ehca_eq *eq = &shca->eq; - int max = 3; - volatile u64 q_ofs, q_ofs2; - unsigned long flags; - spin_lock_irqsave(&eq->spinlock, flags); - q_ofs = eq->ipz_queue.current_q_offset; - spin_unlock_irqrestore(&eq->spinlock, flags); - do { - spin_lock_irqsave(&eq->spinlock, flags); - q_ofs2 = eq->ipz_queue.current_q_offset; - spin_unlock_irqrestore(&eq->spinlock, flags); - max--; - } while (q_ofs == q_ofs2 && max > 0); - if (q_ofs == q_ofs2) - ehca_process_eq(shca, 0); - } - } - mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); - spin_unlock(&shca_list_lock); -} - -static int ehca_mem_notifier(struct notifier_block *nb, - unsigned long action, void *data) -{ - static unsigned long ehca_dmem_warn_time; - unsigned long flags; - - switch (action) { - case MEM_CANCEL_OFFLINE: - case MEM_CANCEL_ONLINE: - case MEM_ONLINE: - case MEM_OFFLINE: - return NOTIFY_OK; - case MEM_GOING_ONLINE: - case MEM_GOING_OFFLINE: - /* only ok if no hca is attached to the lpar */ - spin_lock_irqsave(&shca_list_lock, flags); - if (list_empty(&shca_list)) { - spin_unlock_irqrestore(&shca_list_lock, flags); - return NOTIFY_OK; - } else { - spin_unlock_irqrestore(&shca_list_lock, flags); - if (printk_timed_ratelimit(&ehca_dmem_warn_time, - 30 * 1000)) - ehca_gen_err("DMEM operations are not allowed" - "in conjunction with eHCA"); - return NOTIFY_BAD; - } - } - return NOTIFY_OK; -} - -static struct notifier_block ehca_mem_nb = { - .notifier_call = ehca_mem_notifier, -}; - -static int __init ehca_module_init(void) -{ - int ret; - - printk(KERN_INFO "eHCA Infiniband Device Driver " - "(Version " HCAD_VERSION ")\n"); - - ret = ehca_create_comp_pool(); - if (ret) { - ehca_gen_err("Cannot create comp pool."); - return ret; - } - - ret = ehca_create_slab_caches(); - if (ret) { - ehca_gen_err("Cannot create SLAB caches"); - ret = -ENOMEM; - goto module_init1; - } - - ret = ehca_create_busmap(); - if (ret) { - ehca_gen_err("Cannot create busmap."); - goto module_init2; - } - - ret = ibmebus_register_driver(&ehca_driver); - if (ret) { - ehca_gen_err("Cannot register eHCA device driver"); - ret = -EINVAL; - goto module_init3; - } - - ret = register_memory_notifier(&ehca_mem_nb); - if (ret) { - ehca_gen_err("Failed registering memory add/remove notifier"); - goto module_init4; - } - - if (ehca_poll_all_eqs != 1) { - ehca_gen_err("WARNING!!!"); - ehca_gen_err("It is possible to lose interrupts."); - } else { - init_timer(&poll_eqs_timer); - poll_eqs_timer.function = ehca_poll_eqs; - poll_eqs_timer.expires = jiffies + HZ; - add_timer(&poll_eqs_timer); - } - - return 0; - -module_init4: - ibmebus_unregister_driver(&ehca_driver); - -module_init3: - ehca_destroy_busmap(); - -module_init2: - ehca_destroy_slab_caches(); - -module_init1: - ehca_destroy_comp_pool(); - return ret; -}; - -static void __exit ehca_module_exit(void) -{ - if (ehca_poll_all_eqs == 1) - del_timer_sync(&poll_eqs_timer); - - ibmebus_unregister_driver(&ehca_driver); - - unregister_memory_notifier(&ehca_mem_nb); - - ehca_destroy_busmap(); - - ehca_destroy_slab_caches(); - - ehca_destroy_comp_pool(); - - idr_destroy(&ehca_cq_idr); - idr_destroy(&ehca_qp_idr); -}; - -module_init(ehca_module_init); -module_exit(ehca_module_exit); diff --git a/drivers/staging/rdma/ehca/ehca_mcast.c b/drivers/staging/rdma/ehca/ehca_mcast.c deleted file mode 100644 index cec181532924..000000000000 --- a/drivers/staging/rdma/ehca/ehca_mcast.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * mcast functions - * - * Authors: Khadija Souissi - * Waleri Fomin - * Reinhard Ernst - * Hoang-Nam Nguyen - * Heiko J Schick - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include -#include "ehca_classes.h" -#include "ehca_tools.h" -#include "ehca_qes.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" - -#define MAX_MC_LID 0xFFFE -#define MIN_MC_LID 0xC000 /* Multicast limits */ -#define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF) -#define EHCA_VALID_MULTICAST_LID(lid) \ - (((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID)) - -int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); - struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca, - ib_device); - union ib_gid my_gid; - u64 subnet_prefix, interface_id, h_ret; - - if (ibqp->qp_type != IB_QPT_UD) { - ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type); - return -EINVAL; - } - - if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { - ehca_err(ibqp->device, "invalid mulitcast gid"); - return -EINVAL; - } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { - ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); - return -EINVAL; - } - - memcpy(&my_gid, gid->raw, sizeof(union ib_gid)); - - subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); - interface_id = be64_to_cpu(my_gid.global.interface_id); - h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - my_qp->galpas.kernel, - lid, subnet_prefix, interface_id); - if (h_ret != H_SUCCESS) - ehca_err(ibqp->device, - "ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed " - "h_ret=%lli", my_qp, ibqp->qp_num, h_ret); - - return ehca2ib_return_code(h_ret); -} - -int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); - struct ehca_shca *shca = container_of(ibqp->pd->device, - struct ehca_shca, ib_device); - union ib_gid my_gid; - u64 subnet_prefix, interface_id, h_ret; - - if (ibqp->qp_type != IB_QPT_UD) { - ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type); - return -EINVAL; - } - - if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) { - ehca_err(ibqp->device, "invalid mulitcast gid"); - return -EINVAL; - } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) { - ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid); - return -EINVAL; - } - - memcpy(&my_gid, gid->raw, sizeof(union ib_gid)); - - subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix); - interface_id = be64_to_cpu(my_gid.global.interface_id); - h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - my_qp->galpas.kernel, - lid, subnet_prefix, interface_id); - if (h_ret != H_SUCCESS) - ehca_err(ibqp->device, - "ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed " - "h_ret=%lli", my_qp, ibqp->qp_num, h_ret); - - return ehca2ib_return_code(h_ret); -} diff --git a/drivers/staging/rdma/ehca/ehca_mrmw.c b/drivers/staging/rdma/ehca/ehca_mrmw.c deleted file mode 100644 index 3367205e3160..000000000000 --- a/drivers/staging/rdma/ehca/ehca_mrmw.c +++ /dev/null @@ -1,2202 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * MR/MW functions - * - * Authors: Dietmar Decker - * Christoph Raisch - * Hoang-Nam Nguyen - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include - -#include "ehca_iverbs.h" -#include "ehca_mrmw.h" -#include "hcp_if.h" -#include "hipz_hw.h" - -#define NUM_CHUNKS(length, chunk_size) \ - (((length) + (chunk_size - 1)) / (chunk_size)) - -/* max number of rpages (per hcall register_rpages) */ -#define MAX_RPAGES 512 - -/* DMEM toleration management */ -#define EHCA_SECTSHIFT SECTION_SIZE_BITS -#define EHCA_SECTSIZE (1UL << EHCA_SECTSHIFT) -#define EHCA_HUGEPAGESHIFT 34 -#define EHCA_HUGEPAGE_SIZE (1UL << EHCA_HUGEPAGESHIFT) -#define EHCA_HUGEPAGE_PFN_MASK ((EHCA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT) -#define EHCA_INVAL_ADDR 0xFFFFFFFFFFFFFFFFULL -#define EHCA_DIR_INDEX_SHIFT 13 /* 8k Entries in 64k block */ -#define EHCA_TOP_INDEX_SHIFT (EHCA_DIR_INDEX_SHIFT * 2) -#define EHCA_MAP_ENTRIES (1 << EHCA_DIR_INDEX_SHIFT) -#define EHCA_TOP_MAP_SIZE (0x10000) /* currently fixed map size */ -#define EHCA_DIR_MAP_SIZE (0x10000) -#define EHCA_ENT_MAP_SIZE (0x10000) -#define EHCA_INDEX_MASK (EHCA_MAP_ENTRIES - 1) - -static unsigned long ehca_mr_len; - -/* - * Memory map data structures - */ -struct ehca_dir_bmap { - u64 ent[EHCA_MAP_ENTRIES]; -}; -struct ehca_top_bmap { - struct ehca_dir_bmap *dir[EHCA_MAP_ENTRIES]; -}; -struct ehca_bmap { - struct ehca_top_bmap *top[EHCA_MAP_ENTRIES]; -}; - -static struct ehca_bmap *ehca_bmap; - -static struct kmem_cache *mr_cache; -static struct kmem_cache *mw_cache; - -enum ehca_mr_pgsize { - EHCA_MR_PGSIZE4K = 0x1000L, - EHCA_MR_PGSIZE64K = 0x10000L, - EHCA_MR_PGSIZE1M = 0x100000L, - EHCA_MR_PGSIZE16M = 0x1000000L -}; - -#define EHCA_MR_PGSHIFT4K 12 -#define EHCA_MR_PGSHIFT64K 16 -#define EHCA_MR_PGSHIFT1M 20 -#define EHCA_MR_PGSHIFT16M 24 - -static u64 ehca_map_vaddr(void *caddr); - -static u32 ehca_encode_hwpage_size(u32 pgsize) -{ - int log = ilog2(pgsize); - WARN_ON(log < 12 || log > 24 || log & 3); - return (log - 12) / 4; -} - -static u64 ehca_get_max_hwpage_size(struct ehca_shca *shca) -{ - return rounddown_pow_of_two(shca->hca_cap_mr_pgsize); -} - -static struct ehca_mr *ehca_mr_new(void) -{ - struct ehca_mr *me; - - me = kmem_cache_zalloc(mr_cache, GFP_KERNEL); - if (me) - spin_lock_init(&me->mrlock); - else - ehca_gen_err("alloc failed"); - - return me; -} - -static void ehca_mr_delete(struct ehca_mr *me) -{ - kmem_cache_free(mr_cache, me); -} - -static struct ehca_mw *ehca_mw_new(void) -{ - struct ehca_mw *me; - - me = kmem_cache_zalloc(mw_cache, GFP_KERNEL); - if (me) - spin_lock_init(&me->mwlock); - else - ehca_gen_err("alloc failed"); - - return me; -} - -static void ehca_mw_delete(struct ehca_mw *me) -{ - kmem_cache_free(mw_cache, me); -} - -/*----------------------------------------------------------------------*/ - -struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags) -{ - struct ib_mr *ib_mr; - int ret; - struct ehca_mr *e_maxmr; - struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); - struct ehca_shca *shca = - container_of(pd->device, struct ehca_shca, ib_device); - - if (shca->maxmr) { - e_maxmr = ehca_mr_new(); - if (!e_maxmr) { - ehca_err(&shca->ib_device, "out of memory"); - ib_mr = ERR_PTR(-ENOMEM); - goto get_dma_mr_exit0; - } - - ret = ehca_reg_maxmr(shca, e_maxmr, - (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)), - mr_access_flags, e_pd, - &e_maxmr->ib.ib_mr.lkey, - &e_maxmr->ib.ib_mr.rkey); - if (ret) { - ehca_mr_delete(e_maxmr); - ib_mr = ERR_PTR(ret); - goto get_dma_mr_exit0; - } - ib_mr = &e_maxmr->ib.ib_mr; - } else { - ehca_err(&shca->ib_device, "no internal max-MR exist!"); - ib_mr = ERR_PTR(-EINVAL); - goto get_dma_mr_exit0; - } - -get_dma_mr_exit0: - if (IS_ERR(ib_mr)) - ehca_err(&shca->ib_device, "h_ret=%li pd=%p mr_access_flags=%x", - PTR_ERR(ib_mr), pd, mr_access_flags); - return ib_mr; -} /* end ehca_get_dma_mr() */ - -/*----------------------------------------------------------------------*/ - -struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, - u64 virt, int mr_access_flags, - struct ib_udata *udata) -{ - struct ib_mr *ib_mr; - struct ehca_mr *e_mr; - struct ehca_shca *shca = - container_of(pd->device, struct ehca_shca, ib_device); - struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); - struct ehca_mr_pginfo pginfo; - int ret, page_shift; - u32 num_kpages; - u32 num_hwpages; - u64 hwpage_size; - - if (!pd) { - ehca_gen_err("bad pd=%p", pd); - return ERR_PTR(-EFAULT); - } - - if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && - !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || - ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && - !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { - /* - * Remote Write Access requires Local Write Access - * Remote Atomic Access requires Local Write Access - */ - ehca_err(pd->device, "bad input values: mr_access_flags=%x", - mr_access_flags); - ib_mr = ERR_PTR(-EINVAL); - goto reg_user_mr_exit0; - } - - if (length == 0 || virt + length < virt) { - ehca_err(pd->device, "bad input values: length=%llx " - "virt_base=%llx", length, virt); - ib_mr = ERR_PTR(-EINVAL); - goto reg_user_mr_exit0; - } - - e_mr = ehca_mr_new(); - if (!e_mr) { - ehca_err(pd->device, "out of memory"); - ib_mr = ERR_PTR(-ENOMEM); - goto reg_user_mr_exit0; - } - - e_mr->umem = ib_umem_get(pd->uobject->context, start, length, - mr_access_flags, 0); - if (IS_ERR(e_mr->umem)) { - ib_mr = (void *)e_mr->umem; - goto reg_user_mr_exit1; - } - - if (e_mr->umem->page_size != PAGE_SIZE) { - ehca_err(pd->device, "page size not supported, " - "e_mr->umem->page_size=%x", e_mr->umem->page_size); - ib_mr = ERR_PTR(-EINVAL); - goto reg_user_mr_exit2; - } - - /* determine number of MR pages */ - num_kpages = NUM_CHUNKS((virt % PAGE_SIZE) + length, PAGE_SIZE); - /* select proper hw_pgsize */ - page_shift = PAGE_SHIFT; - if (e_mr->umem->hugetlb) { - /* determine page_shift, clamp between 4K and 16M */ - page_shift = (fls64(length - 1) + 3) & ~3; - page_shift = min(max(page_shift, EHCA_MR_PGSHIFT4K), - EHCA_MR_PGSHIFT16M); - } - hwpage_size = 1UL << page_shift; - - /* now that we have the desired page size, shift until it's - * supported, too. 4K is always supported, so this terminates. - */ - while (!(hwpage_size & shca->hca_cap_mr_pgsize)) - hwpage_size >>= 4; - -reg_user_mr_fallback: - num_hwpages = NUM_CHUNKS((virt % hwpage_size) + length, hwpage_size); - /* register MR on HCA */ - memset(&pginfo, 0, sizeof(pginfo)); - pginfo.type = EHCA_MR_PGI_USER; - pginfo.hwpage_size = hwpage_size; - pginfo.num_kpages = num_kpages; - pginfo.num_hwpages = num_hwpages; - pginfo.u.usr.region = e_mr->umem; - pginfo.next_hwpage = ib_umem_offset(e_mr->umem) / hwpage_size; - pginfo.u.usr.next_sg = pginfo.u.usr.region->sg_head.sgl; - ret = ehca_reg_mr(shca, e_mr, (u64 *)virt, length, mr_access_flags, - e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, - &e_mr->ib.ib_mr.rkey, EHCA_REG_MR); - if (ret == -EINVAL && pginfo.hwpage_size > PAGE_SIZE) { - ehca_warn(pd->device, "failed to register mr " - "with hwpage_size=%llx", hwpage_size); - ehca_info(pd->device, "try to register mr with " - "kpage_size=%lx", PAGE_SIZE); - /* - * this means kpages are not contiguous for a hw page - * try kernel page size as fallback solution - */ - hwpage_size = PAGE_SIZE; - goto reg_user_mr_fallback; - } - if (ret) { - ib_mr = ERR_PTR(ret); - goto reg_user_mr_exit2; - } - - /* successful registration of all pages */ - return &e_mr->ib.ib_mr; - -reg_user_mr_exit2: - ib_umem_release(e_mr->umem); -reg_user_mr_exit1: - ehca_mr_delete(e_mr); -reg_user_mr_exit0: - if (IS_ERR(ib_mr)) - ehca_err(pd->device, "rc=%li pd=%p mr_access_flags=%x udata=%p", - PTR_ERR(ib_mr), pd, mr_access_flags, udata); - return ib_mr; -} /* end ehca_reg_user_mr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_dereg_mr(struct ib_mr *mr) -{ - int ret = 0; - u64 h_ret; - struct ehca_shca *shca = - container_of(mr->device, struct ehca_shca, ib_device); - struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); - - if ((e_mr->flags & EHCA_MR_FLAG_FMR)) { - ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p " - "e_mr->flags=%x", mr, e_mr, e_mr->flags); - ret = -EINVAL; - goto dereg_mr_exit0; - } else if (e_mr == shca->maxmr) { - /* should be impossible, however reject to be sure */ - ehca_err(mr->device, "dereg internal max-MR impossible, mr=%p " - "shca->maxmr=%p mr->lkey=%x", - mr, shca->maxmr, mr->lkey); - ret = -EINVAL; - goto dereg_mr_exit0; - } - - /* TODO: BUSY: MR still has bound window(s) */ - h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); - if (h_ret != H_SUCCESS) { - ehca_err(mr->device, "hipz_free_mr failed, h_ret=%lli shca=%p " - "e_mr=%p hca_hndl=%llx mr_hndl=%llx mr->lkey=%x", - h_ret, shca, e_mr, shca->ipz_hca_handle.handle, - e_mr->ipz_mr_handle.handle, mr->lkey); - ret = ehca2ib_return_code(h_ret); - goto dereg_mr_exit0; - } - - if (e_mr->umem) - ib_umem_release(e_mr->umem); - - /* successful deregistration */ - ehca_mr_delete(e_mr); - -dereg_mr_exit0: - if (ret) - ehca_err(mr->device, "ret=%i mr=%p", ret, mr); - return ret; -} /* end ehca_dereg_mr() */ - -/*----------------------------------------------------------------------*/ - -struct ib_mw *ehca_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) -{ - struct ib_mw *ib_mw; - u64 h_ret; - struct ehca_mw *e_mw; - struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); - struct ehca_shca *shca = - container_of(pd->device, struct ehca_shca, ib_device); - struct ehca_mw_hipzout_parms hipzout; - - if (type != IB_MW_TYPE_1) - return ERR_PTR(-EINVAL); - - e_mw = ehca_mw_new(); - if (!e_mw) { - ib_mw = ERR_PTR(-ENOMEM); - goto alloc_mw_exit0; - } - - h_ret = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, e_mw, - e_pd->fw_pd, &hipzout); - if (h_ret != H_SUCCESS) { - ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lli " - "shca=%p hca_hndl=%llx mw=%p", - h_ret, shca, shca->ipz_hca_handle.handle, e_mw); - ib_mw = ERR_PTR(ehca2ib_return_code(h_ret)); - goto alloc_mw_exit1; - } - /* successful MW allocation */ - e_mw->ipz_mw_handle = hipzout.handle; - e_mw->ib_mw.rkey = hipzout.rkey; - return &e_mw->ib_mw; - -alloc_mw_exit1: - ehca_mw_delete(e_mw); -alloc_mw_exit0: - if (IS_ERR(ib_mw)) - ehca_err(pd->device, "h_ret=%li pd=%p", PTR_ERR(ib_mw), pd); - return ib_mw; -} /* end ehca_alloc_mw() */ - -/*----------------------------------------------------------------------*/ - -int ehca_dealloc_mw(struct ib_mw *mw) -{ - u64 h_ret; - struct ehca_shca *shca = - container_of(mw->device, struct ehca_shca, ib_device); - struct ehca_mw *e_mw = container_of(mw, struct ehca_mw, ib_mw); - - h_ret = hipz_h_free_resource_mw(shca->ipz_hca_handle, e_mw); - if (h_ret != H_SUCCESS) { - ehca_err(mw->device, "hipz_free_mw failed, h_ret=%lli shca=%p " - "mw=%p rkey=%x hca_hndl=%llx mw_hndl=%llx", - h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle, - e_mw->ipz_mw_handle.handle); - return ehca2ib_return_code(h_ret); - } - /* successful deallocation */ - ehca_mw_delete(e_mw); - return 0; -} /* end ehca_dealloc_mw() */ - -/*----------------------------------------------------------------------*/ - -struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd, - int mr_access_flags, - struct ib_fmr_attr *fmr_attr) -{ - struct ib_fmr *ib_fmr; - struct ehca_shca *shca = - container_of(pd->device, struct ehca_shca, ib_device); - struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); - struct ehca_mr *e_fmr; - int ret; - u32 tmp_lkey, tmp_rkey; - struct ehca_mr_pginfo pginfo; - u64 hw_pgsize; - - /* check other parameters */ - if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && - !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || - ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && - !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { - /* - * Remote Write Access requires Local Write Access - * Remote Atomic Access requires Local Write Access - */ - ehca_err(pd->device, "bad input values: mr_access_flags=%x", - mr_access_flags); - ib_fmr = ERR_PTR(-EINVAL); - goto alloc_fmr_exit0; - } - if (mr_access_flags & IB_ACCESS_MW_BIND) { - ehca_err(pd->device, "bad input values: mr_access_flags=%x", - mr_access_flags); - ib_fmr = ERR_PTR(-EINVAL); - goto alloc_fmr_exit0; - } - if ((fmr_attr->max_pages == 0) || (fmr_attr->max_maps == 0)) { - ehca_err(pd->device, "bad input values: fmr_attr->max_pages=%x " - "fmr_attr->max_maps=%x fmr_attr->page_shift=%x", - fmr_attr->max_pages, fmr_attr->max_maps, - fmr_attr->page_shift); - ib_fmr = ERR_PTR(-EINVAL); - goto alloc_fmr_exit0; - } - - hw_pgsize = 1 << fmr_attr->page_shift; - if (!(hw_pgsize & shca->hca_cap_mr_pgsize)) { - ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x", - fmr_attr->page_shift); - ib_fmr = ERR_PTR(-EINVAL); - goto alloc_fmr_exit0; - } - - e_fmr = ehca_mr_new(); - if (!e_fmr) { - ib_fmr = ERR_PTR(-ENOMEM); - goto alloc_fmr_exit0; - } - e_fmr->flags |= EHCA_MR_FLAG_FMR; - - /* register MR on HCA */ - memset(&pginfo, 0, sizeof(pginfo)); - pginfo.hwpage_size = hw_pgsize; - /* - * pginfo.num_hwpages==0, ie register_rpages() will not be called - * but deferred to map_phys_fmr() - */ - ret = ehca_reg_mr(shca, e_fmr, NULL, - fmr_attr->max_pages * (1 << fmr_attr->page_shift), - mr_access_flags, e_pd, &pginfo, - &tmp_lkey, &tmp_rkey, EHCA_REG_MR); - if (ret) { - ib_fmr = ERR_PTR(ret); - goto alloc_fmr_exit1; - } - - /* successful */ - e_fmr->hwpage_size = hw_pgsize; - e_fmr->fmr_page_size = 1 << fmr_attr->page_shift; - e_fmr->fmr_max_pages = fmr_attr->max_pages; - e_fmr->fmr_max_maps = fmr_attr->max_maps; - e_fmr->fmr_map_cnt = 0; - return &e_fmr->ib.ib_fmr; - -alloc_fmr_exit1: - ehca_mr_delete(e_fmr); -alloc_fmr_exit0: - return ib_fmr; -} /* end ehca_alloc_fmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_map_phys_fmr(struct ib_fmr *fmr, - u64 *page_list, - int list_len, - u64 iova) -{ - int ret; - struct ehca_shca *shca = - container_of(fmr->device, struct ehca_shca, ib_device); - struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); - struct ehca_pd *e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd); - struct ehca_mr_pginfo pginfo; - u32 tmp_lkey, tmp_rkey; - - if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { - ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", - e_fmr, e_fmr->flags); - ret = -EINVAL; - goto map_phys_fmr_exit0; - } - ret = ehca_fmr_check_page_list(e_fmr, page_list, list_len); - if (ret) - goto map_phys_fmr_exit0; - if (iova % e_fmr->fmr_page_size) { - /* only whole-numbered pages */ - ehca_err(fmr->device, "bad iova, iova=%llx fmr_page_size=%x", - iova, e_fmr->fmr_page_size); - ret = -EINVAL; - goto map_phys_fmr_exit0; - } - if (e_fmr->fmr_map_cnt >= e_fmr->fmr_max_maps) { - /* HCAD does not limit the maps, however trace this anyway */ - ehca_info(fmr->device, "map limit exceeded, fmr=%p " - "e_fmr->fmr_map_cnt=%x e_fmr->fmr_max_maps=%x", - fmr, e_fmr->fmr_map_cnt, e_fmr->fmr_max_maps); - } - - memset(&pginfo, 0, sizeof(pginfo)); - pginfo.type = EHCA_MR_PGI_FMR; - pginfo.num_kpages = list_len; - pginfo.hwpage_size = e_fmr->hwpage_size; - pginfo.num_hwpages = - list_len * e_fmr->fmr_page_size / pginfo.hwpage_size; - pginfo.u.fmr.page_list = page_list; - pginfo.next_hwpage = - (iova & (e_fmr->fmr_page_size-1)) / pginfo.hwpage_size; - pginfo.u.fmr.fmr_pgsize = e_fmr->fmr_page_size; - - ret = ehca_rereg_mr(shca, e_fmr, (u64 *)iova, - list_len * e_fmr->fmr_page_size, - e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey); - if (ret) - goto map_phys_fmr_exit0; - - /* successful reregistration */ - e_fmr->fmr_map_cnt++; - e_fmr->ib.ib_fmr.lkey = tmp_lkey; - e_fmr->ib.ib_fmr.rkey = tmp_rkey; - return 0; - -map_phys_fmr_exit0: - if (ret) - ehca_err(fmr->device, "ret=%i fmr=%p page_list=%p list_len=%x " - "iova=%llx", ret, fmr, page_list, list_len, iova); - return ret; -} /* end ehca_map_phys_fmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_unmap_fmr(struct list_head *fmr_list) -{ - int ret = 0; - struct ib_fmr *ib_fmr; - struct ehca_shca *shca = NULL; - struct ehca_shca *prev_shca; - struct ehca_mr *e_fmr; - u32 num_fmr = 0; - u32 unmap_fmr_cnt = 0; - - /* check all FMR belong to same SHCA, and check internal flag */ - list_for_each_entry(ib_fmr, fmr_list, list) { - prev_shca = shca; - shca = container_of(ib_fmr->device, struct ehca_shca, - ib_device); - e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); - if ((shca != prev_shca) && prev_shca) { - ehca_err(&shca->ib_device, "SHCA mismatch, shca=%p " - "prev_shca=%p e_fmr=%p", - shca, prev_shca, e_fmr); - ret = -EINVAL; - goto unmap_fmr_exit0; - } - if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { - ehca_err(&shca->ib_device, "not a FMR, e_fmr=%p " - "e_fmr->flags=%x", e_fmr, e_fmr->flags); - ret = -EINVAL; - goto unmap_fmr_exit0; - } - num_fmr++; - } - - /* loop over all FMRs to unmap */ - list_for_each_entry(ib_fmr, fmr_list, list) { - unmap_fmr_cnt++; - e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); - shca = container_of(ib_fmr->device, struct ehca_shca, - ib_device); - ret = ehca_unmap_one_fmr(shca, e_fmr); - if (ret) { - /* unmap failed, stop unmapping of rest of FMRs */ - ehca_err(&shca->ib_device, "unmap of one FMR failed, " - "stop rest, e_fmr=%p num_fmr=%x " - "unmap_fmr_cnt=%x lkey=%x", e_fmr, num_fmr, - unmap_fmr_cnt, e_fmr->ib.ib_fmr.lkey); - goto unmap_fmr_exit0; - } - } - -unmap_fmr_exit0: - if (ret) - ehca_gen_err("ret=%i fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x", - ret, fmr_list, num_fmr, unmap_fmr_cnt); - return ret; -} /* end ehca_unmap_fmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_dealloc_fmr(struct ib_fmr *fmr) -{ - int ret; - u64 h_ret; - struct ehca_shca *shca = - container_of(fmr->device, struct ehca_shca, ib_device); - struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); - - if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { - ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", - e_fmr, e_fmr->flags); - ret = -EINVAL; - goto free_fmr_exit0; - } - - h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); - if (h_ret != H_SUCCESS) { - ehca_err(fmr->device, "hipz_free_mr failed, h_ret=%lli e_fmr=%p " - "hca_hndl=%llx fmr_hndl=%llx fmr->lkey=%x", - h_ret, e_fmr, shca->ipz_hca_handle.handle, - e_fmr->ipz_mr_handle.handle, fmr->lkey); - ret = ehca2ib_return_code(h_ret); - goto free_fmr_exit0; - } - /* successful deregistration */ - ehca_mr_delete(e_fmr); - return 0; - -free_fmr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i fmr=%p", ret, fmr); - return ret; -} /* end ehca_dealloc_fmr() */ - -/*----------------------------------------------------------------------*/ - -static int ehca_reg_bmap_mr_rpages(struct ehca_shca *shca, - struct ehca_mr *e_mr, - struct ehca_mr_pginfo *pginfo); - -int ehca_reg_mr(struct ehca_shca *shca, - struct ehca_mr *e_mr, - u64 *iova_start, - u64 size, - int acl, - struct ehca_pd *e_pd, - struct ehca_mr_pginfo *pginfo, - u32 *lkey, /*OUT*/ - u32 *rkey, /*OUT*/ - enum ehca_reg_type reg_type) -{ - int ret; - u64 h_ret; - u32 hipz_acl; - struct ehca_mr_hipzout_parms hipzout; - - ehca_mrmw_map_acl(acl, &hipz_acl); - ehca_mrmw_set_pgsize_hipz_acl(pginfo->hwpage_size, &hipz_acl); - if (ehca_use_hp_mr == 1) - hipz_acl |= 0x00000001; - - h_ret = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, e_mr, - (u64)iova_start, size, hipz_acl, - e_pd->fw_pd, &hipzout); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lli " - "hca_hndl=%llx", h_ret, shca->ipz_hca_handle.handle); - ret = ehca2ib_return_code(h_ret); - goto ehca_reg_mr_exit0; - } - - e_mr->ipz_mr_handle = hipzout.handle; - - if (reg_type == EHCA_REG_BUSMAP_MR) - ret = ehca_reg_bmap_mr_rpages(shca, e_mr, pginfo); - else if (reg_type == EHCA_REG_MR) - ret = ehca_reg_mr_rpages(shca, e_mr, pginfo); - else - ret = -EINVAL; - - if (ret) - goto ehca_reg_mr_exit1; - - /* successful registration */ - e_mr->num_kpages = pginfo->num_kpages; - e_mr->num_hwpages = pginfo->num_hwpages; - e_mr->hwpage_size = pginfo->hwpage_size; - e_mr->start = iova_start; - e_mr->size = size; - e_mr->acl = acl; - *lkey = hipzout.lkey; - *rkey = hipzout.rkey; - return 0; - -ehca_reg_mr_exit1: - h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "h_ret=%lli shca=%p e_mr=%p " - "iova_start=%p size=%llx acl=%x e_pd=%p lkey=%x " - "pginfo=%p num_kpages=%llx num_hwpages=%llx ret=%i", - h_ret, shca, e_mr, iova_start, size, acl, e_pd, - hipzout.lkey, pginfo, pginfo->num_kpages, - pginfo->num_hwpages, ret); - ehca_err(&shca->ib_device, "internal error in ehca_reg_mr, " - "not recoverable"); - } -ehca_reg_mr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p " - "iova_start=%p size=%llx acl=%x e_pd=%p pginfo=%p " - "num_kpages=%llx num_hwpages=%llx", - ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo, - pginfo->num_kpages, pginfo->num_hwpages); - return ret; -} /* end ehca_reg_mr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_reg_mr_rpages(struct ehca_shca *shca, - struct ehca_mr *e_mr, - struct ehca_mr_pginfo *pginfo) -{ - int ret = 0; - u64 h_ret; - u32 rnum; - u64 rpage; - u32 i; - u64 *kpage; - - if (!pginfo->num_hwpages) /* in case of fmr */ - return 0; - - kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!kpage) { - ehca_err(&shca->ib_device, "kpage alloc failed"); - ret = -ENOMEM; - goto ehca_reg_mr_rpages_exit0; - } - - /* max MAX_RPAGES ehca mr pages per register call */ - for (i = 0; i < NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES); i++) { - - if (i == NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES) - 1) { - rnum = pginfo->num_hwpages % MAX_RPAGES; /* last shot */ - if (rnum == 0) - rnum = MAX_RPAGES; /* last shot is full */ - } else - rnum = MAX_RPAGES; - - ret = ehca_set_pagebuf(pginfo, rnum, kpage); - if (ret) { - ehca_err(&shca->ib_device, "ehca_set_pagebuf " - "bad rc, ret=%i rnum=%x kpage=%p", - ret, rnum, kpage); - goto ehca_reg_mr_rpages_exit1; - } - - if (rnum > 1) { - rpage = __pa(kpage); - if (!rpage) { - ehca_err(&shca->ib_device, "kpage=%p i=%x", - kpage, i); - ret = -EFAULT; - goto ehca_reg_mr_rpages_exit1; - } - } else - rpage = *kpage; - - h_ret = hipz_h_register_rpage_mr( - shca->ipz_hca_handle, e_mr, - ehca_encode_hwpage_size(pginfo->hwpage_size), - 0, rpage, rnum); - - if (i == NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES) - 1) { - /* - * check for 'registration complete'==H_SUCCESS - * and for 'page registered'==H_PAGE_REGISTERED - */ - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "last " - "hipz_reg_rpage_mr failed, h_ret=%lli " - "e_mr=%p i=%x hca_hndl=%llx mr_hndl=%llx" - " lkey=%x", h_ret, e_mr, i, - shca->ipz_hca_handle.handle, - e_mr->ipz_mr_handle.handle, - e_mr->ib.ib_mr.lkey); - ret = ehca2ib_return_code(h_ret); - break; - } else - ret = 0; - } else if (h_ret != H_PAGE_REGISTERED) { - ehca_err(&shca->ib_device, "hipz_reg_rpage_mr failed, " - "h_ret=%lli e_mr=%p i=%x lkey=%x hca_hndl=%llx " - "mr_hndl=%llx", h_ret, e_mr, i, - e_mr->ib.ib_mr.lkey, - shca->ipz_hca_handle.handle, - e_mr->ipz_mr_handle.handle); - ret = ehca2ib_return_code(h_ret); - break; - } else - ret = 0; - } /* end for(i) */ - - -ehca_reg_mr_rpages_exit1: - ehca_free_fw_ctrlblock(kpage); -ehca_reg_mr_rpages_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p pginfo=%p " - "num_kpages=%llx num_hwpages=%llx", ret, shca, e_mr, - pginfo, pginfo->num_kpages, pginfo->num_hwpages); - return ret; -} /* end ehca_reg_mr_rpages() */ - -/*----------------------------------------------------------------------*/ - -inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca, - struct ehca_mr *e_mr, - u64 *iova_start, - u64 size, - u32 acl, - struct ehca_pd *e_pd, - struct ehca_mr_pginfo *pginfo, - u32 *lkey, /*OUT*/ - u32 *rkey) /*OUT*/ -{ - int ret; - u64 h_ret; - u32 hipz_acl; - u64 *kpage; - u64 rpage; - struct ehca_mr_pginfo pginfo_save; - struct ehca_mr_hipzout_parms hipzout; - - ehca_mrmw_map_acl(acl, &hipz_acl); - ehca_mrmw_set_pgsize_hipz_acl(pginfo->hwpage_size, &hipz_acl); - - kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!kpage) { - ehca_err(&shca->ib_device, "kpage alloc failed"); - ret = -ENOMEM; - goto ehca_rereg_mr_rereg1_exit0; - } - - pginfo_save = *pginfo; - ret = ehca_set_pagebuf(pginfo, pginfo->num_hwpages, kpage); - if (ret) { - ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p " - "pginfo=%p type=%x num_kpages=%llx num_hwpages=%llx " - "kpage=%p", e_mr, pginfo, pginfo->type, - pginfo->num_kpages, pginfo->num_hwpages, kpage); - goto ehca_rereg_mr_rereg1_exit1; - } - rpage = __pa(kpage); - if (!rpage) { - ehca_err(&shca->ib_device, "kpage=%p", kpage); - ret = -EFAULT; - goto ehca_rereg_mr_rereg1_exit1; - } - h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_mr, - (u64)iova_start, size, hipz_acl, - e_pd->fw_pd, rpage, &hipzout); - if (h_ret != H_SUCCESS) { - /* - * reregistration unsuccessful, try it again with the 3 hCalls, - * e.g. this is required in case H_MR_CONDITION - * (MW bound or MR is shared) - */ - ehca_warn(&shca->ib_device, "hipz_h_reregister_pmr failed " - "(Rereg1), h_ret=%lli e_mr=%p", h_ret, e_mr); - *pginfo = pginfo_save; - ret = -EAGAIN; - } else if ((u64 *)hipzout.vaddr != iova_start) { - ehca_err(&shca->ib_device, "PHYP changed iova_start in " - "rereg_pmr, iova_start=%p iova_start_out=%llx e_mr=%p " - "mr_handle=%llx lkey=%x lkey_out=%x", iova_start, - hipzout.vaddr, e_mr, e_mr->ipz_mr_handle.handle, - e_mr->ib.ib_mr.lkey, hipzout.lkey); - ret = -EFAULT; - } else { - /* - * successful reregistration - * note: start and start_out are identical for eServer HCAs - */ - e_mr->num_kpages = pginfo->num_kpages; - e_mr->num_hwpages = pginfo->num_hwpages; - e_mr->hwpage_size = pginfo->hwpage_size; - e_mr->start = iova_start; - e_mr->size = size; - e_mr->acl = acl; - *lkey = hipzout.lkey; - *rkey = hipzout.rkey; - } - -ehca_rereg_mr_rereg1_exit1: - ehca_free_fw_ctrlblock(kpage); -ehca_rereg_mr_rereg1_exit0: - if ( ret && (ret != -EAGAIN) ) - ehca_err(&shca->ib_device, "ret=%i lkey=%x rkey=%x " - "pginfo=%p num_kpages=%llx num_hwpages=%llx", - ret, *lkey, *rkey, pginfo, pginfo->num_kpages, - pginfo->num_hwpages); - return ret; -} /* end ehca_rereg_mr_rereg1() */ - -/*----------------------------------------------------------------------*/ - -int ehca_rereg_mr(struct ehca_shca *shca, - struct ehca_mr *e_mr, - u64 *iova_start, - u64 size, - int acl, - struct ehca_pd *e_pd, - struct ehca_mr_pginfo *pginfo, - u32 *lkey, - u32 *rkey) -{ - int ret = 0; - u64 h_ret; - int rereg_1_hcall = 1; /* 1: use hipz_h_reregister_pmr directly */ - int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */ - - /* first determine reregistration hCall(s) */ - if ((pginfo->num_hwpages > MAX_RPAGES) || - (e_mr->num_hwpages > MAX_RPAGES) || - (pginfo->num_hwpages > e_mr->num_hwpages)) { - ehca_dbg(&shca->ib_device, "Rereg3 case, " - "pginfo->num_hwpages=%llx e_mr->num_hwpages=%x", - pginfo->num_hwpages, e_mr->num_hwpages); - rereg_1_hcall = 0; - rereg_3_hcall = 1; - } - - if (e_mr->flags & EHCA_MR_FLAG_MAXMR) { /* check for max-MR */ - rereg_1_hcall = 0; - rereg_3_hcall = 1; - e_mr->flags &= ~EHCA_MR_FLAG_MAXMR; - ehca_err(&shca->ib_device, "Rereg MR for max-MR! e_mr=%p", - e_mr); - } - - if (rereg_1_hcall) { - ret = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size, - acl, e_pd, pginfo, lkey, rkey); - if (ret) { - if (ret == -EAGAIN) - rereg_3_hcall = 1; - else - goto ehca_rereg_mr_exit0; - } - } - - if (rereg_3_hcall) { - struct ehca_mr save_mr; - - /* first deregister old MR */ - h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_free_mr failed, " - "h_ret=%lli e_mr=%p hca_hndl=%llx mr_hndl=%llx " - "mr->lkey=%x", - h_ret, e_mr, shca->ipz_hca_handle.handle, - e_mr->ipz_mr_handle.handle, - e_mr->ib.ib_mr.lkey); - ret = ehca2ib_return_code(h_ret); - goto ehca_rereg_mr_exit0; - } - /* clean ehca_mr_t, without changing struct ib_mr and lock */ - save_mr = *e_mr; - ehca_mr_deletenew(e_mr); - - /* set some MR values */ - e_mr->flags = save_mr.flags; - e_mr->hwpage_size = save_mr.hwpage_size; - e_mr->fmr_page_size = save_mr.fmr_page_size; - e_mr->fmr_max_pages = save_mr.fmr_max_pages; - e_mr->fmr_max_maps = save_mr.fmr_max_maps; - e_mr->fmr_map_cnt = save_mr.fmr_map_cnt; - - ret = ehca_reg_mr(shca, e_mr, iova_start, size, acl, - e_pd, pginfo, lkey, rkey, EHCA_REG_MR); - if (ret) { - u32 offset = (u64)(&e_mr->flags) - (u64)e_mr; - memcpy(&e_mr->flags, &(save_mr.flags), - sizeof(struct ehca_mr) - offset); - goto ehca_rereg_mr_exit0; - } - } - -ehca_rereg_mr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p " - "iova_start=%p size=%llx acl=%x e_pd=%p pginfo=%p " - "num_kpages=%llx lkey=%x rkey=%x rereg_1_hcall=%x " - "rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size, - acl, e_pd, pginfo, pginfo->num_kpages, *lkey, *rkey, - rereg_1_hcall, rereg_3_hcall); - return ret; -} /* end ehca_rereg_mr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_unmap_one_fmr(struct ehca_shca *shca, - struct ehca_mr *e_fmr) -{ - int ret = 0; - u64 h_ret; - struct ehca_pd *e_pd = - container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd); - struct ehca_mr save_fmr; - u32 tmp_lkey, tmp_rkey; - struct ehca_mr_pginfo pginfo; - struct ehca_mr_hipzout_parms hipzout; - struct ehca_mr save_mr; - - if (e_fmr->fmr_max_pages <= MAX_RPAGES) { - /* - * note: after using rereg hcall with len=0, - * rereg hcall must be used again for registering pages - */ - h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0, - 0, 0, e_pd->fw_pd, 0, &hipzout); - if (h_ret == H_SUCCESS) { - /* successful reregistration */ - e_fmr->start = NULL; - e_fmr->size = 0; - tmp_lkey = hipzout.lkey; - tmp_rkey = hipzout.rkey; - return 0; - } - /* - * should not happen, because length checked above, - * FMRs are not shared and no MW bound to FMRs - */ - ehca_err(&shca->ib_device, "hipz_reregister_pmr failed " - "(Rereg1), h_ret=%lli e_fmr=%p hca_hndl=%llx " - "mr_hndl=%llx lkey=%x lkey_out=%x", - h_ret, e_fmr, shca->ipz_hca_handle.handle, - e_fmr->ipz_mr_handle.handle, - e_fmr->ib.ib_fmr.lkey, hipzout.lkey); - /* try free and rereg */ - } - - /* first free old FMR */ - h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_free_mr failed, " - "h_ret=%lli e_fmr=%p hca_hndl=%llx mr_hndl=%llx " - "lkey=%x", - h_ret, e_fmr, shca->ipz_hca_handle.handle, - e_fmr->ipz_mr_handle.handle, - e_fmr->ib.ib_fmr.lkey); - ret = ehca2ib_return_code(h_ret); - goto ehca_unmap_one_fmr_exit0; - } - /* clean ehca_mr_t, without changing lock */ - save_fmr = *e_fmr; - ehca_mr_deletenew(e_fmr); - - /* set some MR values */ - e_fmr->flags = save_fmr.flags; - e_fmr->hwpage_size = save_fmr.hwpage_size; - e_fmr->fmr_page_size = save_fmr.fmr_page_size; - e_fmr->fmr_max_pages = save_fmr.fmr_max_pages; - e_fmr->fmr_max_maps = save_fmr.fmr_max_maps; - e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt; - e_fmr->acl = save_fmr.acl; - - memset(&pginfo, 0, sizeof(pginfo)); - pginfo.type = EHCA_MR_PGI_FMR; - ret = ehca_reg_mr(shca, e_fmr, NULL, - (e_fmr->fmr_max_pages * e_fmr->fmr_page_size), - e_fmr->acl, e_pd, &pginfo, &tmp_lkey, - &tmp_rkey, EHCA_REG_MR); - if (ret) { - u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr; - memcpy(&e_fmr->flags, &(save_mr.flags), - sizeof(struct ehca_mr) - offset); - } - -ehca_unmap_one_fmr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i tmp_lkey=%x tmp_rkey=%x " - "fmr_max_pages=%x", - ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages); - return ret; -} /* end ehca_unmap_one_fmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_reg_smr(struct ehca_shca *shca, - struct ehca_mr *e_origmr, - struct ehca_mr *e_newmr, - u64 *iova_start, - int acl, - struct ehca_pd *e_pd, - u32 *lkey, /*OUT*/ - u32 *rkey) /*OUT*/ -{ - int ret = 0; - u64 h_ret; - u32 hipz_acl; - struct ehca_mr_hipzout_parms hipzout; - - ehca_mrmw_map_acl(acl, &hipz_acl); - ehca_mrmw_set_pgsize_hipz_acl(e_origmr->hwpage_size, &hipz_acl); - - h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, - (u64)iova_start, hipz_acl, e_pd->fw_pd, - &hipzout); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lli " - "shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x " - "e_pd=%p hca_hndl=%llx mr_hndl=%llx lkey=%x", - h_ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd, - shca->ipz_hca_handle.handle, - e_origmr->ipz_mr_handle.handle, - e_origmr->ib.ib_mr.lkey); - ret = ehca2ib_return_code(h_ret); - goto ehca_reg_smr_exit0; - } - /* successful registration */ - e_newmr->num_kpages = e_origmr->num_kpages; - e_newmr->num_hwpages = e_origmr->num_hwpages; - e_newmr->hwpage_size = e_origmr->hwpage_size; - e_newmr->start = iova_start; - e_newmr->size = e_origmr->size; - e_newmr->acl = acl; - e_newmr->ipz_mr_handle = hipzout.handle; - *lkey = hipzout.lkey; - *rkey = hipzout.rkey; - return 0; - -ehca_reg_smr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p e_origmr=%p " - "e_newmr=%p iova_start=%p acl=%x e_pd=%p", - ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd); - return ret; -} /* end ehca_reg_smr() */ - -/*----------------------------------------------------------------------*/ -static inline void *ehca_calc_sectbase(int top, int dir, int idx) -{ - unsigned long ret = idx; - ret |= dir << EHCA_DIR_INDEX_SHIFT; - ret |= top << EHCA_TOP_INDEX_SHIFT; - return __va(ret << SECTION_SIZE_BITS); -} - -#define ehca_bmap_valid(entry) \ - ((u64)entry != (u64)EHCA_INVAL_ADDR) - -static u64 ehca_reg_mr_section(int top, int dir, int idx, u64 *kpage, - struct ehca_shca *shca, struct ehca_mr *mr, - struct ehca_mr_pginfo *pginfo) -{ - u64 h_ret = 0; - unsigned long page = 0; - u64 rpage = __pa(kpage); - int page_count; - - void *sectbase = ehca_calc_sectbase(top, dir, idx); - if ((unsigned long)sectbase & (pginfo->hwpage_size - 1)) { - ehca_err(&shca->ib_device, "reg_mr_section will probably fail:" - "hwpage_size does not fit to " - "section start address"); - } - page_count = EHCA_SECTSIZE / pginfo->hwpage_size; - - while (page < page_count) { - u64 rnum; - for (rnum = 0; (rnum < MAX_RPAGES) && (page < page_count); - rnum++) { - void *pg = sectbase + ((page++) * pginfo->hwpage_size); - kpage[rnum] = __pa(pg); - } - - h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, mr, - ehca_encode_hwpage_size(pginfo->hwpage_size), - 0, rpage, rnum); - - if ((h_ret != H_SUCCESS) && (h_ret != H_PAGE_REGISTERED)) { - ehca_err(&shca->ib_device, "register_rpage_mr failed"); - return h_ret; - } - } - return h_ret; -} - -static u64 ehca_reg_mr_sections(int top, int dir, u64 *kpage, - struct ehca_shca *shca, struct ehca_mr *mr, - struct ehca_mr_pginfo *pginfo) -{ - u64 hret = H_SUCCESS; - int idx; - - for (idx = 0; idx < EHCA_MAP_ENTRIES; idx++) { - if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir]->ent[idx])) - continue; - - hret = ehca_reg_mr_section(top, dir, idx, kpage, shca, mr, - pginfo); - if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) - return hret; - } - return hret; -} - -static u64 ehca_reg_mr_dir_sections(int top, u64 *kpage, struct ehca_shca *shca, - struct ehca_mr *mr, - struct ehca_mr_pginfo *pginfo) -{ - u64 hret = H_SUCCESS; - int dir; - - for (dir = 0; dir < EHCA_MAP_ENTRIES; dir++) { - if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir])) - continue; - - hret = ehca_reg_mr_sections(top, dir, kpage, shca, mr, pginfo); - if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) - return hret; - } - return hret; -} - -/* register internal max-MR to internal SHCA */ -int ehca_reg_internal_maxmr( - struct ehca_shca *shca, - struct ehca_pd *e_pd, - struct ehca_mr **e_maxmr) /*OUT*/ -{ - int ret; - struct ehca_mr *e_mr; - u64 *iova_start; - u64 size_maxmr; - struct ehca_mr_pginfo pginfo; - u32 num_kpages; - u32 num_hwpages; - u64 hw_pgsize; - - if (!ehca_bmap) { - ret = -EFAULT; - goto ehca_reg_internal_maxmr_exit0; - } - - e_mr = ehca_mr_new(); - if (!e_mr) { - ehca_err(&shca->ib_device, "out of memory"); - ret = -ENOMEM; - goto ehca_reg_internal_maxmr_exit0; - } - e_mr->flags |= EHCA_MR_FLAG_MAXMR; - - /* register internal max-MR on HCA */ - size_maxmr = ehca_mr_len; - iova_start = (u64 *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)); - num_kpages = NUM_CHUNKS(((u64)iova_start % PAGE_SIZE) + size_maxmr, - PAGE_SIZE); - hw_pgsize = ehca_get_max_hwpage_size(shca); - num_hwpages = NUM_CHUNKS(((u64)iova_start % hw_pgsize) + size_maxmr, - hw_pgsize); - - memset(&pginfo, 0, sizeof(pginfo)); - pginfo.type = EHCA_MR_PGI_PHYS; - pginfo.num_kpages = num_kpages; - pginfo.num_hwpages = num_hwpages; - pginfo.hwpage_size = hw_pgsize; - pginfo.u.phy.addr = 0; - pginfo.u.phy.size = size_maxmr; - - ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd, - &pginfo, &e_mr->ib.ib_mr.lkey, - &e_mr->ib.ib_mr.rkey, EHCA_REG_BUSMAP_MR); - if (ret) { - ehca_err(&shca->ib_device, "reg of internal max MR failed, " - "e_mr=%p iova_start=%p size_maxmr=%llx num_kpages=%x " - "num_hwpages=%x", e_mr, iova_start, size_maxmr, - num_kpages, num_hwpages); - goto ehca_reg_internal_maxmr_exit1; - } - - /* successful registration of all pages */ - e_mr->ib.ib_mr.device = e_pd->ib_pd.device; - e_mr->ib.ib_mr.pd = &e_pd->ib_pd; - e_mr->ib.ib_mr.uobject = NULL; - atomic_inc(&(e_pd->ib_pd.usecnt)); - *e_maxmr = e_mr; - return 0; - -ehca_reg_internal_maxmr_exit1: - ehca_mr_delete(e_mr); -ehca_reg_internal_maxmr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p e_pd=%p e_maxmr=%p", - ret, shca, e_pd, e_maxmr); - return ret; -} /* end ehca_reg_internal_maxmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_reg_maxmr(struct ehca_shca *shca, - struct ehca_mr *e_newmr, - u64 *iova_start, - int acl, - struct ehca_pd *e_pd, - u32 *lkey, - u32 *rkey) -{ - u64 h_ret; - struct ehca_mr *e_origmr = shca->maxmr; - u32 hipz_acl; - struct ehca_mr_hipzout_parms hipzout; - - ehca_mrmw_map_acl(acl, &hipz_acl); - ehca_mrmw_set_pgsize_hipz_acl(e_origmr->hwpage_size, &hipz_acl); - - h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, - (u64)iova_start, hipz_acl, e_pd->fw_pd, - &hipzout); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lli " - "e_origmr=%p hca_hndl=%llx mr_hndl=%llx lkey=%x", - h_ret, e_origmr, shca->ipz_hca_handle.handle, - e_origmr->ipz_mr_handle.handle, - e_origmr->ib.ib_mr.lkey); - return ehca2ib_return_code(h_ret); - } - /* successful registration */ - e_newmr->num_kpages = e_origmr->num_kpages; - e_newmr->num_hwpages = e_origmr->num_hwpages; - e_newmr->hwpage_size = e_origmr->hwpage_size; - e_newmr->start = iova_start; - e_newmr->size = e_origmr->size; - e_newmr->acl = acl; - e_newmr->ipz_mr_handle = hipzout.handle; - *lkey = hipzout.lkey; - *rkey = hipzout.rkey; - return 0; -} /* end ehca_reg_maxmr() */ - -/*----------------------------------------------------------------------*/ - -int ehca_dereg_internal_maxmr(struct ehca_shca *shca) -{ - int ret; - struct ehca_mr *e_maxmr; - struct ib_pd *ib_pd; - - if (!shca->maxmr) { - ehca_err(&shca->ib_device, "bad call, shca=%p", shca); - ret = -EINVAL; - goto ehca_dereg_internal_maxmr_exit0; - } - - e_maxmr = shca->maxmr; - ib_pd = e_maxmr->ib.ib_mr.pd; - shca->maxmr = NULL; /* remove internal max-MR indication from SHCA */ - - ret = ehca_dereg_mr(&e_maxmr->ib.ib_mr); - if (ret) { - ehca_err(&shca->ib_device, "dereg internal max-MR failed, " - "ret=%i e_maxmr=%p shca=%p lkey=%x", - ret, e_maxmr, shca, e_maxmr->ib.ib_mr.lkey); - shca->maxmr = e_maxmr; - goto ehca_dereg_internal_maxmr_exit0; - } - - atomic_dec(&ib_pd->usecnt); - -ehca_dereg_internal_maxmr_exit0: - if (ret) - ehca_err(&shca->ib_device, "ret=%i shca=%p shca->maxmr=%p", - ret, shca, shca->maxmr); - return ret; -} /* end ehca_dereg_internal_maxmr() */ - -/*----------------------------------------------------------------------*/ - -/* check page list of map FMR verb for validness */ -int ehca_fmr_check_page_list(struct ehca_mr *e_fmr, - u64 *page_list, - int list_len) -{ - u32 i; - u64 *page; - - if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) { - ehca_gen_err("bad list_len, list_len=%x " - "e_fmr->fmr_max_pages=%x fmr=%p", - list_len, e_fmr->fmr_max_pages, e_fmr); - return -EINVAL; - } - - /* each page must be aligned */ - page = page_list; - for (i = 0; i < list_len; i++) { - if (*page % e_fmr->fmr_page_size) { - ehca_gen_err("bad page, i=%x *page=%llx page=%p fmr=%p " - "fmr_page_size=%x", i, *page, page, e_fmr, - e_fmr->fmr_page_size); - return -EINVAL; - } - page++; - } - - return 0; -} /* end ehca_fmr_check_page_list() */ - -/*----------------------------------------------------------------------*/ - -/* PAGE_SIZE >= pginfo->hwpage_size */ -static int ehca_set_pagebuf_user1(struct ehca_mr_pginfo *pginfo, - u32 number, - u64 *kpage) -{ - int ret = 0; - u64 pgaddr; - u32 j = 0; - int hwpages_per_kpage = PAGE_SIZE / pginfo->hwpage_size; - struct scatterlist **sg = &pginfo->u.usr.next_sg; - - while (*sg != NULL) { - pgaddr = page_to_pfn(sg_page(*sg)) - << PAGE_SHIFT; - *kpage = pgaddr + (pginfo->next_hwpage * - pginfo->hwpage_size); - if (!(*kpage)) { - ehca_gen_err("pgaddr=%llx " - "sg_dma_address=%llx " - "entry=%llx next_hwpage=%llx", - pgaddr, (u64)sg_dma_address(*sg), - pginfo->u.usr.next_nmap, - pginfo->next_hwpage); - return -EFAULT; - } - (pginfo->hwpage_cnt)++; - (pginfo->next_hwpage)++; - kpage++; - if (pginfo->next_hwpage % hwpages_per_kpage == 0) { - (pginfo->kpage_cnt)++; - (pginfo->u.usr.next_nmap)++; - pginfo->next_hwpage = 0; - *sg = sg_next(*sg); - } - j++; - if (j >= number) - break; - } - - return ret; -} - -/* - * check given pages for contiguous layout - * last page addr is returned in prev_pgaddr for further check - */ -static int ehca_check_kpages_per_ate(struct scatterlist **sg, - int num_pages, - u64 *prev_pgaddr) -{ - for (; *sg && num_pages > 0; *sg = sg_next(*sg), num_pages--) { - u64 pgaddr = page_to_pfn(sg_page(*sg)) << PAGE_SHIFT; - if (ehca_debug_level >= 3) - ehca_gen_dbg("chunk_page=%llx value=%016llx", pgaddr, - *(u64 *)__va(pgaddr)); - if (pgaddr - PAGE_SIZE != *prev_pgaddr) { - ehca_gen_err("uncontiguous page found pgaddr=%llx " - "prev_pgaddr=%llx entries_left_in_hwpage=%x", - pgaddr, *prev_pgaddr, num_pages); - return -EINVAL; - } - *prev_pgaddr = pgaddr; - } - return 0; -} - -/* PAGE_SIZE < pginfo->hwpage_size */ -static int ehca_set_pagebuf_user2(struct ehca_mr_pginfo *pginfo, - u32 number, - u64 *kpage) -{ - int ret = 0; - u64 pgaddr, prev_pgaddr; - u32 j = 0; - int kpages_per_hwpage = pginfo->hwpage_size / PAGE_SIZE; - int nr_kpages = kpages_per_hwpage; - struct scatterlist **sg = &pginfo->u.usr.next_sg; - - while (*sg != NULL) { - - if (nr_kpages == kpages_per_hwpage) { - pgaddr = (page_to_pfn(sg_page(*sg)) - << PAGE_SHIFT); - *kpage = pgaddr; - if (!(*kpage)) { - ehca_gen_err("pgaddr=%llx entry=%llx", - pgaddr, pginfo->u.usr.next_nmap); - ret = -EFAULT; - return ret; - } - /* - * The first page in a hwpage must be aligned; - * the first MR page is exempt from this rule. - */ - if (pgaddr & (pginfo->hwpage_size - 1)) { - if (pginfo->hwpage_cnt) { - ehca_gen_err( - "invalid alignment " - "pgaddr=%llx entry=%llx " - "mr_pgsize=%llx", - pgaddr, pginfo->u.usr.next_nmap, - pginfo->hwpage_size); - ret = -EFAULT; - return ret; - } - /* first MR page */ - pginfo->kpage_cnt = - (pgaddr & - (pginfo->hwpage_size - 1)) >> - PAGE_SHIFT; - nr_kpages -= pginfo->kpage_cnt; - *kpage = pgaddr & - ~(pginfo->hwpage_size - 1); - } - if (ehca_debug_level >= 3) { - u64 val = *(u64 *)__va(pgaddr); - ehca_gen_dbg("kpage=%llx page=%llx " - "value=%016llx", - *kpage, pgaddr, val); - } - prev_pgaddr = pgaddr; - *sg = sg_next(*sg); - pginfo->kpage_cnt++; - pginfo->u.usr.next_nmap++; - nr_kpages--; - if (!nr_kpages) - goto next_kpage; - continue; - } - - ret = ehca_check_kpages_per_ate(sg, nr_kpages, - &prev_pgaddr); - if (ret) - return ret; - pginfo->kpage_cnt += nr_kpages; - pginfo->u.usr.next_nmap += nr_kpages; - -next_kpage: - nr_kpages = kpages_per_hwpage; - (pginfo->hwpage_cnt)++; - kpage++; - j++; - if (j >= number) - break; - } - - return ret; -} - -static int ehca_set_pagebuf_phys(struct ehca_mr_pginfo *pginfo, - u32 number, u64 *kpage) -{ - int ret = 0; - u64 addr = pginfo->u.phy.addr; - u64 size = pginfo->u.phy.size; - u64 num_hw, offs_hw; - u32 i = 0; - - num_hw = NUM_CHUNKS((addr % pginfo->hwpage_size) + size, - pginfo->hwpage_size); - offs_hw = (addr & ~(pginfo->hwpage_size - 1)) / pginfo->hwpage_size; - - while (pginfo->next_hwpage < offs_hw + num_hw) { - /* sanity check */ - if ((pginfo->kpage_cnt >= pginfo->num_kpages) || - (pginfo->hwpage_cnt >= pginfo->num_hwpages)) { - ehca_gen_err("kpage_cnt >= num_kpages, " - "kpage_cnt=%llx num_kpages=%llx " - "hwpage_cnt=%llx " - "num_hwpages=%llx i=%x", - pginfo->kpage_cnt, - pginfo->num_kpages, - pginfo->hwpage_cnt, - pginfo->num_hwpages, i); - return -EFAULT; - } - *kpage = (addr & ~(pginfo->hwpage_size - 1)) + - (pginfo->next_hwpage * pginfo->hwpage_size); - if ( !(*kpage) && addr ) { - ehca_gen_err("addr=%llx size=%llx " - "next_hwpage=%llx", addr, - size, pginfo->next_hwpage); - return -EFAULT; - } - (pginfo->hwpage_cnt)++; - (pginfo->next_hwpage)++; - if (PAGE_SIZE >= pginfo->hwpage_size) { - if (pginfo->next_hwpage % - (PAGE_SIZE / pginfo->hwpage_size) == 0) - (pginfo->kpage_cnt)++; - } else - pginfo->kpage_cnt += pginfo->hwpage_size / - PAGE_SIZE; - kpage++; - i++; - if (i >= number) break; - } - if (pginfo->next_hwpage >= offs_hw + num_hw) { - pginfo->next_hwpage = 0; - } - - return ret; -} - -static int ehca_set_pagebuf_fmr(struct ehca_mr_pginfo *pginfo, - u32 number, u64 *kpage) -{ - int ret = 0; - u64 *fmrlist; - u32 i; - - /* loop over desired page_list entries */ - fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem; - for (i = 0; i < number; i++) { - *kpage = (*fmrlist & ~(pginfo->hwpage_size - 1)) + - pginfo->next_hwpage * pginfo->hwpage_size; - if ( !(*kpage) ) { - ehca_gen_err("*fmrlist=%llx fmrlist=%p " - "next_listelem=%llx next_hwpage=%llx", - *fmrlist, fmrlist, - pginfo->u.fmr.next_listelem, - pginfo->next_hwpage); - return -EFAULT; - } - (pginfo->hwpage_cnt)++; - if (pginfo->u.fmr.fmr_pgsize >= pginfo->hwpage_size) { - if (pginfo->next_hwpage % - (pginfo->u.fmr.fmr_pgsize / - pginfo->hwpage_size) == 0) { - (pginfo->kpage_cnt)++; - (pginfo->u.fmr.next_listelem)++; - fmrlist++; - pginfo->next_hwpage = 0; - } else - (pginfo->next_hwpage)++; - } else { - unsigned int cnt_per_hwpage = pginfo->hwpage_size / - pginfo->u.fmr.fmr_pgsize; - unsigned int j; - u64 prev = *kpage; - /* check if adrs are contiguous */ - for (j = 1; j < cnt_per_hwpage; j++) { - u64 p = fmrlist[j] & ~(pginfo->hwpage_size - 1); - if (prev + pginfo->u.fmr.fmr_pgsize != p) { - ehca_gen_err("uncontiguous fmr pages " - "found prev=%llx p=%llx " - "idx=%x", prev, p, i + j); - return -EINVAL; - } - prev = p; - } - pginfo->kpage_cnt += cnt_per_hwpage; - pginfo->u.fmr.next_listelem += cnt_per_hwpage; - fmrlist += cnt_per_hwpage; - } - kpage++; - } - return ret; -} - -/* setup page buffer from page info */ -int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo, - u32 number, - u64 *kpage) -{ - int ret; - - switch (pginfo->type) { - case EHCA_MR_PGI_PHYS: - ret = ehca_set_pagebuf_phys(pginfo, number, kpage); - break; - case EHCA_MR_PGI_USER: - ret = PAGE_SIZE >= pginfo->hwpage_size ? - ehca_set_pagebuf_user1(pginfo, number, kpage) : - ehca_set_pagebuf_user2(pginfo, number, kpage); - break; - case EHCA_MR_PGI_FMR: - ret = ehca_set_pagebuf_fmr(pginfo, number, kpage); - break; - default: - ehca_gen_err("bad pginfo->type=%x", pginfo->type); - ret = -EFAULT; - break; - } - return ret; -} /* end ehca_set_pagebuf() */ - -/*----------------------------------------------------------------------*/ - -/* - * check MR if it is a max-MR, i.e. uses whole memory - * in case it's a max-MR 1 is returned, else 0 - */ -int ehca_mr_is_maxmr(u64 size, - u64 *iova_start) -{ - /* a MR is treated as max-MR only if it fits following: */ - if ((size == ehca_mr_len) && - (iova_start == (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)))) { - ehca_gen_dbg("this is a max-MR"); - return 1; - } else - return 0; -} /* end ehca_mr_is_maxmr() */ - -/*----------------------------------------------------------------------*/ - -/* map access control for MR/MW. This routine is used for MR and MW. */ -void ehca_mrmw_map_acl(int ib_acl, - u32 *hipz_acl) -{ - *hipz_acl = 0; - if (ib_acl & IB_ACCESS_REMOTE_READ) - *hipz_acl |= HIPZ_ACCESSCTRL_R_READ; - if (ib_acl & IB_ACCESS_REMOTE_WRITE) - *hipz_acl |= HIPZ_ACCESSCTRL_R_WRITE; - if (ib_acl & IB_ACCESS_REMOTE_ATOMIC) - *hipz_acl |= HIPZ_ACCESSCTRL_R_ATOMIC; - if (ib_acl & IB_ACCESS_LOCAL_WRITE) - *hipz_acl |= HIPZ_ACCESSCTRL_L_WRITE; - if (ib_acl & IB_ACCESS_MW_BIND) - *hipz_acl |= HIPZ_ACCESSCTRL_MW_BIND; -} /* end ehca_mrmw_map_acl() */ - -/*----------------------------------------------------------------------*/ - -/* sets page size in hipz access control for MR/MW. */ -void ehca_mrmw_set_pgsize_hipz_acl(u32 pgsize, u32 *hipz_acl) /*INOUT*/ -{ - *hipz_acl |= (ehca_encode_hwpage_size(pgsize) << 24); -} /* end ehca_mrmw_set_pgsize_hipz_acl() */ - -/*----------------------------------------------------------------------*/ - -/* - * reverse map access control for MR/MW. - * This routine is used for MR and MW. - */ -void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl, - int *ib_acl) /*OUT*/ -{ - *ib_acl = 0; - if (*hipz_acl & HIPZ_ACCESSCTRL_R_READ) - *ib_acl |= IB_ACCESS_REMOTE_READ; - if (*hipz_acl & HIPZ_ACCESSCTRL_R_WRITE) - *ib_acl |= IB_ACCESS_REMOTE_WRITE; - if (*hipz_acl & HIPZ_ACCESSCTRL_R_ATOMIC) - *ib_acl |= IB_ACCESS_REMOTE_ATOMIC; - if (*hipz_acl & HIPZ_ACCESSCTRL_L_WRITE) - *ib_acl |= IB_ACCESS_LOCAL_WRITE; - if (*hipz_acl & HIPZ_ACCESSCTRL_MW_BIND) - *ib_acl |= IB_ACCESS_MW_BIND; -} /* end ehca_mrmw_reverse_map_acl() */ - - -/*----------------------------------------------------------------------*/ - -/* - * MR destructor and constructor - * used in Reregister MR verb, sets all fields in ehca_mr_t to 0, - * except struct ib_mr and spinlock - */ -void ehca_mr_deletenew(struct ehca_mr *mr) -{ - mr->flags = 0; - mr->num_kpages = 0; - mr->num_hwpages = 0; - mr->acl = 0; - mr->start = NULL; - mr->fmr_page_size = 0; - mr->fmr_max_pages = 0; - mr->fmr_max_maps = 0; - mr->fmr_map_cnt = 0; - memset(&mr->ipz_mr_handle, 0, sizeof(mr->ipz_mr_handle)); - memset(&mr->galpas, 0, sizeof(mr->galpas)); -} /* end ehca_mr_deletenew() */ - -int ehca_init_mrmw_cache(void) -{ - mr_cache = kmem_cache_create("ehca_cache_mr", - sizeof(struct ehca_mr), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!mr_cache) - return -ENOMEM; - mw_cache = kmem_cache_create("ehca_cache_mw", - sizeof(struct ehca_mw), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!mw_cache) { - kmem_cache_destroy(mr_cache); - mr_cache = NULL; - return -ENOMEM; - } - return 0; -} - -void ehca_cleanup_mrmw_cache(void) -{ - kmem_cache_destroy(mr_cache); - kmem_cache_destroy(mw_cache); -} - -static inline int ehca_init_top_bmap(struct ehca_top_bmap *ehca_top_bmap, - int dir) -{ - if (!ehca_bmap_valid(ehca_top_bmap->dir[dir])) { - ehca_top_bmap->dir[dir] = - kmalloc(sizeof(struct ehca_dir_bmap), GFP_KERNEL); - if (!ehca_top_bmap->dir[dir]) - return -ENOMEM; - /* Set map block to 0xFF according to EHCA_INVAL_ADDR */ - memset(ehca_top_bmap->dir[dir], 0xFF, EHCA_ENT_MAP_SIZE); - } - return 0; -} - -static inline int ehca_init_bmap(struct ehca_bmap *ehca_bmap, int top, int dir) -{ - if (!ehca_bmap_valid(ehca_bmap->top[top])) { - ehca_bmap->top[top] = - kmalloc(sizeof(struct ehca_top_bmap), GFP_KERNEL); - if (!ehca_bmap->top[top]) - return -ENOMEM; - /* Set map block to 0xFF according to EHCA_INVAL_ADDR */ - memset(ehca_bmap->top[top], 0xFF, EHCA_DIR_MAP_SIZE); - } - return ehca_init_top_bmap(ehca_bmap->top[top], dir); -} - -static inline int ehca_calc_index(unsigned long i, unsigned long s) -{ - return (i >> s) & EHCA_INDEX_MASK; -} - -void ehca_destroy_busmap(void) -{ - int top, dir; - - if (!ehca_bmap) - return; - - for (top = 0; top < EHCA_MAP_ENTRIES; top++) { - if (!ehca_bmap_valid(ehca_bmap->top[top])) - continue; - for (dir = 0; dir < EHCA_MAP_ENTRIES; dir++) { - if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir])) - continue; - - kfree(ehca_bmap->top[top]->dir[dir]); - } - - kfree(ehca_bmap->top[top]); - } - - kfree(ehca_bmap); - ehca_bmap = NULL; -} - -static int ehca_update_busmap(unsigned long pfn, unsigned long nr_pages) -{ - unsigned long i, start_section, end_section; - int top, dir, idx; - - if (!nr_pages) - return 0; - - if (!ehca_bmap) { - ehca_bmap = kmalloc(sizeof(struct ehca_bmap), GFP_KERNEL); - if (!ehca_bmap) - return -ENOMEM; - /* Set map block to 0xFF according to EHCA_INVAL_ADDR */ - memset(ehca_bmap, 0xFF, EHCA_TOP_MAP_SIZE); - } - - start_section = (pfn * PAGE_SIZE) / EHCA_SECTSIZE; - end_section = ((pfn + nr_pages) * PAGE_SIZE) / EHCA_SECTSIZE; - for (i = start_section; i < end_section; i++) { - int ret; - top = ehca_calc_index(i, EHCA_TOP_INDEX_SHIFT); - dir = ehca_calc_index(i, EHCA_DIR_INDEX_SHIFT); - idx = i & EHCA_INDEX_MASK; - - ret = ehca_init_bmap(ehca_bmap, top, dir); - if (ret) { - ehca_destroy_busmap(); - return ret; - } - ehca_bmap->top[top]->dir[dir]->ent[idx] = ehca_mr_len; - ehca_mr_len += EHCA_SECTSIZE; - } - return 0; -} - -static int ehca_is_hugepage(unsigned long pfn) -{ - int page_order; - - if (pfn & EHCA_HUGEPAGE_PFN_MASK) - return 0; - - page_order = compound_order(pfn_to_page(pfn)); - if (page_order + PAGE_SHIFT != EHCA_HUGEPAGESHIFT) - return 0; - - return 1; -} - -static int ehca_create_busmap_callback(unsigned long initial_pfn, - unsigned long total_nr_pages, void *arg) -{ - int ret; - unsigned long pfn, start_pfn, end_pfn, nr_pages; - - if ((total_nr_pages * PAGE_SIZE) < EHCA_HUGEPAGE_SIZE) - return ehca_update_busmap(initial_pfn, total_nr_pages); - - /* Given chunk is >= 16GB -> check for hugepages */ - start_pfn = initial_pfn; - end_pfn = initial_pfn + total_nr_pages; - pfn = start_pfn; - - while (pfn < end_pfn) { - if (ehca_is_hugepage(pfn)) { - /* Add mem found in front of the hugepage */ - nr_pages = pfn - start_pfn; - ret = ehca_update_busmap(start_pfn, nr_pages); - if (ret) - return ret; - /* Skip the hugepage */ - pfn += (EHCA_HUGEPAGE_SIZE / PAGE_SIZE); - start_pfn = pfn; - } else - pfn += (EHCA_SECTSIZE / PAGE_SIZE); - } - - /* Add mem found behind the hugepage(s) */ - nr_pages = pfn - start_pfn; - return ehca_update_busmap(start_pfn, nr_pages); -} - -int ehca_create_busmap(void) -{ - int ret; - - ehca_mr_len = 0; - ret = walk_system_ram_range(0, 1ULL << MAX_PHYSMEM_BITS, NULL, - ehca_create_busmap_callback); - return ret; -} - -static int ehca_reg_bmap_mr_rpages(struct ehca_shca *shca, - struct ehca_mr *e_mr, - struct ehca_mr_pginfo *pginfo) -{ - int top; - u64 hret, *kpage; - - kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!kpage) { - ehca_err(&shca->ib_device, "kpage alloc failed"); - return -ENOMEM; - } - for (top = 0; top < EHCA_MAP_ENTRIES; top++) { - if (!ehca_bmap_valid(ehca_bmap->top[top])) - continue; - hret = ehca_reg_mr_dir_sections(top, kpage, shca, e_mr, pginfo); - if ((hret != H_PAGE_REGISTERED) && (hret != H_SUCCESS)) - break; - } - - ehca_free_fw_ctrlblock(kpage); - - if (hret == H_SUCCESS) - return 0; /* Everything is fine */ - else { - ehca_err(&shca->ib_device, "ehca_reg_bmap_mr_rpages failed, " - "h_ret=%lli e_mr=%p top=%x lkey=%x " - "hca_hndl=%llx mr_hndl=%llx", hret, e_mr, top, - e_mr->ib.ib_mr.lkey, - shca->ipz_hca_handle.handle, - e_mr->ipz_mr_handle.handle); - return ehca2ib_return_code(hret); - } -} - -static u64 ehca_map_vaddr(void *caddr) -{ - int top, dir, idx; - unsigned long abs_addr, offset; - u64 entry; - - if (!ehca_bmap) - return EHCA_INVAL_ADDR; - - abs_addr = __pa(caddr); - top = ehca_calc_index(abs_addr, EHCA_TOP_INDEX_SHIFT + EHCA_SECTSHIFT); - if (!ehca_bmap_valid(ehca_bmap->top[top])) - return EHCA_INVAL_ADDR; - - dir = ehca_calc_index(abs_addr, EHCA_DIR_INDEX_SHIFT + EHCA_SECTSHIFT); - if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir])) - return EHCA_INVAL_ADDR; - - idx = ehca_calc_index(abs_addr, EHCA_SECTSHIFT); - - entry = ehca_bmap->top[top]->dir[dir]->ent[idx]; - if (ehca_bmap_valid(entry)) { - offset = (unsigned long)caddr & (EHCA_SECTSIZE - 1); - return entry | offset; - } else - return EHCA_INVAL_ADDR; -} - -static int ehca_dma_mapping_error(struct ib_device *dev, u64 dma_addr) -{ - return dma_addr == EHCA_INVAL_ADDR; -} - -static u64 ehca_dma_map_single(struct ib_device *dev, void *cpu_addr, - size_t size, enum dma_data_direction direction) -{ - if (cpu_addr) - return ehca_map_vaddr(cpu_addr); - else - return EHCA_INVAL_ADDR; -} - -static void ehca_dma_unmap_single(struct ib_device *dev, u64 addr, size_t size, - enum dma_data_direction direction) -{ - /* This is only a stub; nothing to be done here */ -} - -static u64 ehca_dma_map_page(struct ib_device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - u64 addr; - - if (offset + size > PAGE_SIZE) - return EHCA_INVAL_ADDR; - - addr = ehca_map_vaddr(page_address(page)); - if (!ehca_dma_mapping_error(dev, addr)) - addr += offset; - - return addr; -} - -static void ehca_dma_unmap_page(struct ib_device *dev, u64 addr, size_t size, - enum dma_data_direction direction) -{ - /* This is only a stub; nothing to be done here */ -} - -static int ehca_dma_map_sg(struct ib_device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction direction) -{ - struct scatterlist *sg; - int i; - - for_each_sg(sgl, sg, nents, i) { - u64 addr; - addr = ehca_map_vaddr(sg_virt(sg)); - if (ehca_dma_mapping_error(dev, addr)) - return 0; - - sg->dma_address = addr; - sg->dma_length = sg->length; - } - return nents; -} - -static void ehca_dma_unmap_sg(struct ib_device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ - /* This is only a stub; nothing to be done here */ -} - -static void ehca_dma_sync_single_for_cpu(struct ib_device *dev, u64 addr, - size_t size, - enum dma_data_direction dir) -{ - dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); -} - -static void ehca_dma_sync_single_for_device(struct ib_device *dev, u64 addr, - size_t size, - enum dma_data_direction dir) -{ - dma_sync_single_for_device(dev->dma_device, addr, size, dir); -} - -static void *ehca_dma_alloc_coherent(struct ib_device *dev, size_t size, - u64 *dma_handle, gfp_t flag) -{ - struct page *p; - void *addr = NULL; - u64 dma_addr; - - p = alloc_pages(flag, get_order(size)); - if (p) { - addr = page_address(p); - dma_addr = ehca_map_vaddr(addr); - if (ehca_dma_mapping_error(dev, dma_addr)) { - free_pages((unsigned long)addr, get_order(size)); - return NULL; - } - if (dma_handle) - *dma_handle = dma_addr; - return addr; - } - return NULL; -} - -static void ehca_dma_free_coherent(struct ib_device *dev, size_t size, - void *cpu_addr, u64 dma_handle) -{ - if (cpu_addr && size) - free_pages((unsigned long)cpu_addr, get_order(size)); -} - - -struct ib_dma_mapping_ops ehca_dma_mapping_ops = { - .mapping_error = ehca_dma_mapping_error, - .map_single = ehca_dma_map_single, - .unmap_single = ehca_dma_unmap_single, - .map_page = ehca_dma_map_page, - .unmap_page = ehca_dma_unmap_page, - .map_sg = ehca_dma_map_sg, - .unmap_sg = ehca_dma_unmap_sg, - .sync_single_for_cpu = ehca_dma_sync_single_for_cpu, - .sync_single_for_device = ehca_dma_sync_single_for_device, - .alloc_coherent = ehca_dma_alloc_coherent, - .free_coherent = ehca_dma_free_coherent, -}; diff --git a/drivers/staging/rdma/ehca/ehca_mrmw.h b/drivers/staging/rdma/ehca/ehca_mrmw.h deleted file mode 100644 index 52bfa95697f7..000000000000 --- a/drivers/staging/rdma/ehca/ehca_mrmw.h +++ /dev/null @@ -1,127 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * MR/MW declarations and inline functions - * - * Authors: Dietmar Decker - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _EHCA_MRMW_H_ -#define _EHCA_MRMW_H_ - -enum ehca_reg_type { - EHCA_REG_MR, - EHCA_REG_BUSMAP_MR -}; - -int ehca_reg_mr(struct ehca_shca *shca, - struct ehca_mr *e_mr, - u64 *iova_start, - u64 size, - int acl, - struct ehca_pd *e_pd, - struct ehca_mr_pginfo *pginfo, - u32 *lkey, - u32 *rkey, - enum ehca_reg_type reg_type); - -int ehca_reg_mr_rpages(struct ehca_shca *shca, - struct ehca_mr *e_mr, - struct ehca_mr_pginfo *pginfo); - -int ehca_rereg_mr(struct ehca_shca *shca, - struct ehca_mr *e_mr, - u64 *iova_start, - u64 size, - int mr_access_flags, - struct ehca_pd *e_pd, - struct ehca_mr_pginfo *pginfo, - u32 *lkey, - u32 *rkey); - -int ehca_unmap_one_fmr(struct ehca_shca *shca, - struct ehca_mr *e_fmr); - -int ehca_reg_smr(struct ehca_shca *shca, - struct ehca_mr *e_origmr, - struct ehca_mr *e_newmr, - u64 *iova_start, - int acl, - struct ehca_pd *e_pd, - u32 *lkey, - u32 *rkey); - -int ehca_reg_internal_maxmr(struct ehca_shca *shca, - struct ehca_pd *e_pd, - struct ehca_mr **maxmr); - -int ehca_reg_maxmr(struct ehca_shca *shca, - struct ehca_mr *e_newmr, - u64 *iova_start, - int acl, - struct ehca_pd *e_pd, - u32 *lkey, - u32 *rkey); - -int ehca_dereg_internal_maxmr(struct ehca_shca *shca); - -int ehca_fmr_check_page_list(struct ehca_mr *e_fmr, - u64 *page_list, - int list_len); - -int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo, - u32 number, - u64 *kpage); - -int ehca_mr_is_maxmr(u64 size, - u64 *iova_start); - -void ehca_mrmw_map_acl(int ib_acl, - u32 *hipz_acl); - -void ehca_mrmw_set_pgsize_hipz_acl(u32 pgsize, u32 *hipz_acl); - -void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl, - int *ib_acl); - -void ehca_mr_deletenew(struct ehca_mr *mr); - -int ehca_create_busmap(void); - -void ehca_destroy_busmap(void); - -extern struct ib_dma_mapping_ops ehca_dma_mapping_ops; -#endif /*_EHCA_MRMW_H_*/ diff --git a/drivers/staging/rdma/ehca/ehca_pd.c b/drivers/staging/rdma/ehca/ehca_pd.c deleted file mode 100644 index 2a8aae411941..000000000000 --- a/drivers/staging/rdma/ehca/ehca_pd.c +++ /dev/null @@ -1,123 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * PD functions - * - * Authors: Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_tools.h" -#include "ehca_iverbs.h" - -static struct kmem_cache *pd_cache; - -struct ib_pd *ehca_alloc_pd(struct ib_device *device, - struct ib_ucontext *context, struct ib_udata *udata) -{ - struct ehca_pd *pd; - int i; - - pd = kmem_cache_zalloc(pd_cache, GFP_KERNEL); - if (!pd) { - ehca_err(device, "device=%p context=%p out of memory", - device, context); - return ERR_PTR(-ENOMEM); - } - - for (i = 0; i < 2; i++) { - INIT_LIST_HEAD(&pd->free[i]); - INIT_LIST_HEAD(&pd->full[i]); - } - mutex_init(&pd->lock); - - /* - * Kernel PD: when device = -1, 0 - * User PD: when context != -1 - */ - if (!context) { - /* - * Kernel PDs after init reuses always - * the one created in ehca_shca_reopen() - */ - struct ehca_shca *shca = container_of(device, struct ehca_shca, - ib_device); - pd->fw_pd.value = shca->pd->fw_pd.value; - } else - pd->fw_pd.value = (u64)pd; - - return &pd->ib_pd; -} - -int ehca_dealloc_pd(struct ib_pd *pd) -{ - struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd); - int i, leftovers = 0; - struct ipz_small_queue_page *page, *tmp; - - for (i = 0; i < 2; i++) { - list_splice(&my_pd->full[i], &my_pd->free[i]); - list_for_each_entry_safe(page, tmp, &my_pd->free[i], list) { - leftovers = 1; - free_page(page->page); - kmem_cache_free(small_qp_cache, page); - } - } - - if (leftovers) - ehca_warn(pd->device, - "Some small queue pages were not freed"); - - kmem_cache_free(pd_cache, my_pd); - - return 0; -} - -int ehca_init_pd_cache(void) -{ - pd_cache = kmem_cache_create("ehca_cache_pd", - sizeof(struct ehca_pd), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!pd_cache) - return -ENOMEM; - return 0; -} - -void ehca_cleanup_pd_cache(void) -{ - kmem_cache_destroy(pd_cache); -} diff --git a/drivers/staging/rdma/ehca/ehca_qes.h b/drivers/staging/rdma/ehca/ehca_qes.h deleted file mode 100644 index 90c4efa67586..000000000000 --- a/drivers/staging/rdma/ehca/ehca_qes.h +++ /dev/null @@ -1,260 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Hardware request structures - * - * Authors: Waleri Fomin - * Reinhard Ernst - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - - -#ifndef _EHCA_QES_H_ -#define _EHCA_QES_H_ - -#include "ehca_tools.h" - -/* virtual scatter gather entry to specify remote addresses with length */ -struct ehca_vsgentry { - u64 vaddr; - u32 lkey; - u32 length; -}; - -#define GRH_FLAG_MASK EHCA_BMASK_IBM( 7, 7) -#define GRH_IPVERSION_MASK EHCA_BMASK_IBM( 0, 3) -#define GRH_TCLASS_MASK EHCA_BMASK_IBM( 4, 12) -#define GRH_FLOWLABEL_MASK EHCA_BMASK_IBM(13, 31) -#define GRH_PAYLEN_MASK EHCA_BMASK_IBM(32, 47) -#define GRH_NEXTHEADER_MASK EHCA_BMASK_IBM(48, 55) -#define GRH_HOPLIMIT_MASK EHCA_BMASK_IBM(56, 63) - -/* - * Unreliable Datagram Address Vector Format - * see IBTA Vol1 chapter 8.3 Global Routing Header - */ -struct ehca_ud_av { - u8 sl; - u8 lnh; - u16 dlid; - u8 reserved1; - u8 reserved2; - u8 reserved3; - u8 slid_path_bits; - u8 reserved4; - u8 ipd; - u8 reserved5; - u8 pmtu; - u32 reserved6; - u64 reserved7; - union { - struct { - u64 word_0; /* always set to 6 */ - /*should be 0x1B for IB transport */ - u64 word_1; - u64 word_2; - u64 word_3; - u64 word_4; - } grh; - struct { - u32 wd_0; - u32 wd_1; - /* DWord_1 --> SGID */ - - u32 sgid_wd3; - u32 sgid_wd2; - - u32 sgid_wd1; - u32 sgid_wd0; - /* DWord_3 --> DGID */ - - u32 dgid_wd3; - u32 dgid_wd2; - - u32 dgid_wd1; - u32 dgid_wd0; - } grh_l; - }; -}; - -/* maximum number of sg entries allowed in a WQE */ -#define MAX_WQE_SG_ENTRIES 252 - -#define WQE_OPTYPE_SEND 0x80 -#define WQE_OPTYPE_RDMAREAD 0x40 -#define WQE_OPTYPE_RDMAWRITE 0x20 -#define WQE_OPTYPE_CMPSWAP 0x10 -#define WQE_OPTYPE_FETCHADD 0x08 -#define WQE_OPTYPE_BIND 0x04 - -#define WQE_WRFLAG_REQ_SIGNAL_COM 0x80 -#define WQE_WRFLAG_FENCE 0x40 -#define WQE_WRFLAG_IMM_DATA_PRESENT 0x20 -#define WQE_WRFLAG_SOLIC_EVENT 0x10 - -#define WQEF_CACHE_HINT 0x80 -#define WQEF_CACHE_HINT_RD_WR 0x40 -#define WQEF_TIMED_WQE 0x20 -#define WQEF_PURGE 0x08 -#define WQEF_HIGH_NIBBLE 0xF0 - -#define MW_BIND_ACCESSCTRL_R_WRITE 0x40 -#define MW_BIND_ACCESSCTRL_R_READ 0x20 -#define MW_BIND_ACCESSCTRL_R_ATOMIC 0x10 - -struct ehca_wqe { - u64 work_request_id; - u8 optype; - u8 wr_flag; - u16 pkeyi; - u8 wqef; - u8 nr_of_data_seg; - u16 wqe_provided_slid; - u32 destination_qp_number; - u32 resync_psn_sqp; - u32 local_ee_context_qkey; - u32 immediate_data; - union { - struct { - u64 remote_virtual_address; - u32 rkey; - u32 reserved; - u64 atomic_1st_op_dma_len; - u64 atomic_2nd_op; - struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES]; - - } nud; - struct { - u64 ehca_ud_av_ptr; - u64 reserved1; - u64 reserved2; - u64 reserved3; - struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES]; - } ud_avp; - struct { - struct ehca_ud_av ud_av; - struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES - - 2]; - } ud_av; - struct { - u64 reserved0; - u64 reserved1; - u64 reserved2; - u64 reserved3; - struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES]; - } all_rcv; - - struct { - u64 reserved; - u32 rkey; - u32 old_rkey; - u64 reserved1; - u64 reserved2; - u64 virtual_address; - u32 reserved3; - u32 length; - u32 reserved4; - u16 reserved5; - u8 reserved6; - u8 lr_ctl; - u32 lkey; - u32 reserved7; - u64 reserved8; - u64 reserved9; - u64 reserved10; - u64 reserved11; - } bind; - struct { - u64 reserved12; - u64 reserved13; - u32 size; - u32 start; - } inline_data; - } u; - -}; - -#define WC_SEND_RECEIVE EHCA_BMASK_IBM(0, 0) -#define WC_IMM_DATA EHCA_BMASK_IBM(1, 1) -#define WC_GRH_PRESENT EHCA_BMASK_IBM(2, 2) -#define WC_SE_BIT EHCA_BMASK_IBM(3, 3) -#define WC_STATUS_ERROR_BIT 0x80000000 -#define WC_STATUS_REMOTE_ERROR_FLAGS 0x0000F800 -#define WC_STATUS_PURGE_BIT 0x10 -#define WC_SEND_RECEIVE_BIT 0x80 - -struct ehca_cqe { - u64 work_request_id; - u8 optype; - u8 w_completion_flags; - u16 reserved1; - u32 nr_bytes_transferred; - u32 immediate_data; - u32 local_qp_number; - u8 freed_resource_count; - u8 service_level; - u16 wqe_count; - u32 qp_token; - u32 qkey_ee_token; - u32 remote_qp_number; - u16 dlid; - u16 rlid; - u16 reserved2; - u16 pkey_index; - u32 cqe_timestamp; - u32 wqe_timestamp; - u8 wqe_timestamp_valid; - u8 reserved3; - u8 reserved4; - u8 cqe_flags; - u32 status; -}; - -struct ehca_eqe { - u64 entry; -}; - -struct ehca_mrte { - u64 starting_va; - u64 length; /* length of memory region in bytes*/ - u32 pd; - u8 key_instance; - u8 pagesize; - u8 mr_control; - u8 local_remote_access_ctrl; - u8 reserved[0x20 - 0x18]; - u64 at_pointer[4]; -}; -#endif /*_EHCA_QES_H_*/ diff --git a/drivers/staging/rdma/ehca/ehca_qp.c b/drivers/staging/rdma/ehca/ehca_qp.c deleted file mode 100644 index 896c01f810f6..000000000000 --- a/drivers/staging/rdma/ehca/ehca_qp.c +++ /dev/null @@ -1,2256 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * QP functions - * - * Authors: Joachim Fenkes - * Stefan Roscher - * Waleri Fomin - * Hoang-Nam Nguyen - * Reinhard Ernst - * Heiko J Schick - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_classes.h" -#include "ehca_tools.h" -#include "ehca_qes.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" -#include "hipz_fns.h" - -static struct kmem_cache *qp_cache; - -/* - * attributes not supported by query qp - */ -#define QP_ATTR_QUERY_NOT_SUPPORTED (IB_QP_ACCESS_FLAGS | \ - IB_QP_EN_SQD_ASYNC_NOTIFY) - -/* - * ehca (internal) qp state values - */ -enum ehca_qp_state { - EHCA_QPS_RESET = 1, - EHCA_QPS_INIT = 2, - EHCA_QPS_RTR = 3, - EHCA_QPS_RTS = 5, - EHCA_QPS_SQD = 6, - EHCA_QPS_SQE = 8, - EHCA_QPS_ERR = 128 -}; - -/* - * qp state transitions as defined by IB Arch Rel 1.1 page 431 - */ -enum ib_qp_statetrans { - IB_QPST_ANY2RESET, - IB_QPST_ANY2ERR, - IB_QPST_RESET2INIT, - IB_QPST_INIT2RTR, - IB_QPST_INIT2INIT, - IB_QPST_RTR2RTS, - IB_QPST_RTS2SQD, - IB_QPST_RTS2RTS, - IB_QPST_SQD2RTS, - IB_QPST_SQE2RTS, - IB_QPST_SQD2SQD, - IB_QPST_MAX /* nr of transitions, this must be last!!! */ -}; - -/* - * ib2ehca_qp_state maps IB to ehca qp_state - * returns ehca qp state corresponding to given ib qp state - */ -static inline enum ehca_qp_state ib2ehca_qp_state(enum ib_qp_state ib_qp_state) -{ - switch (ib_qp_state) { - case IB_QPS_RESET: - return EHCA_QPS_RESET; - case IB_QPS_INIT: - return EHCA_QPS_INIT; - case IB_QPS_RTR: - return EHCA_QPS_RTR; - case IB_QPS_RTS: - return EHCA_QPS_RTS; - case IB_QPS_SQD: - return EHCA_QPS_SQD; - case IB_QPS_SQE: - return EHCA_QPS_SQE; - case IB_QPS_ERR: - return EHCA_QPS_ERR; - default: - ehca_gen_err("invalid ib_qp_state=%x", ib_qp_state); - return -EINVAL; - } -} - -/* - * ehca2ib_qp_state maps ehca to IB qp_state - * returns ib qp state corresponding to given ehca qp state - */ -static inline enum ib_qp_state ehca2ib_qp_state(enum ehca_qp_state - ehca_qp_state) -{ - switch (ehca_qp_state) { - case EHCA_QPS_RESET: - return IB_QPS_RESET; - case EHCA_QPS_INIT: - return IB_QPS_INIT; - case EHCA_QPS_RTR: - return IB_QPS_RTR; - case EHCA_QPS_RTS: - return IB_QPS_RTS; - case EHCA_QPS_SQD: - return IB_QPS_SQD; - case EHCA_QPS_SQE: - return IB_QPS_SQE; - case EHCA_QPS_ERR: - return IB_QPS_ERR; - default: - ehca_gen_err("invalid ehca_qp_state=%x", ehca_qp_state); - return -EINVAL; - } -} - -/* - * ehca_qp_type used as index for req_attr and opt_attr of - * struct ehca_modqp_statetrans - */ -enum ehca_qp_type { - QPT_RC = 0, - QPT_UC = 1, - QPT_UD = 2, - QPT_SQP = 3, - QPT_MAX -}; - -/* - * ib2ehcaqptype maps Ib to ehca qp_type - * returns ehca qp type corresponding to ib qp type - */ -static inline enum ehca_qp_type ib2ehcaqptype(enum ib_qp_type ibqptype) -{ - switch (ibqptype) { - case IB_QPT_SMI: - case IB_QPT_GSI: - return QPT_SQP; - case IB_QPT_RC: - return QPT_RC; - case IB_QPT_UC: - return QPT_UC; - case IB_QPT_UD: - return QPT_UD; - default: - ehca_gen_err("Invalid ibqptype=%x", ibqptype); - return -EINVAL; - } -} - -static inline enum ib_qp_statetrans get_modqp_statetrans(int ib_fromstate, - int ib_tostate) -{ - int index = -EINVAL; - switch (ib_tostate) { - case IB_QPS_RESET: - index = IB_QPST_ANY2RESET; - break; - case IB_QPS_INIT: - switch (ib_fromstate) { - case IB_QPS_RESET: - index = IB_QPST_RESET2INIT; - break; - case IB_QPS_INIT: - index = IB_QPST_INIT2INIT; - break; - } - break; - case IB_QPS_RTR: - if (ib_fromstate == IB_QPS_INIT) - index = IB_QPST_INIT2RTR; - break; - case IB_QPS_RTS: - switch (ib_fromstate) { - case IB_QPS_RTR: - index = IB_QPST_RTR2RTS; - break; - case IB_QPS_RTS: - index = IB_QPST_RTS2RTS; - break; - case IB_QPS_SQD: - index = IB_QPST_SQD2RTS; - break; - case IB_QPS_SQE: - index = IB_QPST_SQE2RTS; - break; - } - break; - case IB_QPS_SQD: - if (ib_fromstate == IB_QPS_RTS) - index = IB_QPST_RTS2SQD; - break; - case IB_QPS_SQE: - break; - case IB_QPS_ERR: - index = IB_QPST_ANY2ERR; - break; - default: - break; - } - return index; -} - -/* - * ibqptype2servicetype returns hcp service type corresponding to given - * ib qp type used by create_qp() - */ -static inline int ibqptype2servicetype(enum ib_qp_type ibqptype) -{ - switch (ibqptype) { - case IB_QPT_SMI: - case IB_QPT_GSI: - return ST_UD; - case IB_QPT_RC: - return ST_RC; - case IB_QPT_UC: - return ST_UC; - case IB_QPT_UD: - return ST_UD; - case IB_QPT_RAW_IPV6: - return -EINVAL; - case IB_QPT_RAW_ETHERTYPE: - return -EINVAL; - default: - ehca_gen_err("Invalid ibqptype=%x", ibqptype); - return -EINVAL; - } -} - -/* - * init userspace queue info from ipz_queue data - */ -static inline void queue2resp(struct ipzu_queue_resp *resp, - struct ipz_queue *queue) -{ - resp->qe_size = queue->qe_size; - resp->act_nr_of_sg = queue->act_nr_of_sg; - resp->queue_length = queue->queue_length; - resp->pagesize = queue->pagesize; - resp->toggle_state = queue->toggle_state; - resp->offset = queue->offset; -} - -/* - * init_qp_queue initializes/constructs r/squeue and registers queue pages. - */ -static inline int init_qp_queue(struct ehca_shca *shca, - struct ehca_pd *pd, - struct ehca_qp *my_qp, - struct ipz_queue *queue, - int q_type, - u64 expected_hret, - struct ehca_alloc_queue_parms *parms, - int wqe_size) -{ - int ret, cnt, ipz_rc, nr_q_pages; - void *vpage; - u64 rpage, h_ret; - struct ib_device *ib_dev = &shca->ib_device; - struct ipz_adapter_handle ipz_hca_handle = shca->ipz_hca_handle; - - if (!parms->queue_size) - return 0; - - if (parms->is_small) { - nr_q_pages = 1; - ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages, - 128 << parms->page_size, - wqe_size, parms->act_nr_sges, 1); - } else { - nr_q_pages = parms->queue_size; - ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages, - EHCA_PAGESIZE, wqe_size, - parms->act_nr_sges, 0); - } - - if (!ipz_rc) { - ehca_err(ib_dev, "Cannot allocate page for queue. ipz_rc=%i", - ipz_rc); - return -EBUSY; - } - - /* register queue pages */ - for (cnt = 0; cnt < nr_q_pages; cnt++) { - vpage = ipz_qpageit_get_inc(queue); - if (!vpage) { - ehca_err(ib_dev, "ipz_qpageit_get_inc() " - "failed p_vpage= %p", vpage); - ret = -EINVAL; - goto init_qp_queue1; - } - rpage = __pa(vpage); - - h_ret = hipz_h_register_rpage_qp(ipz_hca_handle, - my_qp->ipz_qp_handle, - NULL, 0, q_type, - rpage, parms->is_small ? 0 : 1, - my_qp->galpas.kernel); - if (cnt == (nr_q_pages - 1)) { /* last page! */ - if (h_ret != expected_hret) { - ehca_err(ib_dev, "hipz_qp_register_rpage() " - "h_ret=%lli", h_ret); - ret = ehca2ib_return_code(h_ret); - goto init_qp_queue1; - } - vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue); - if (vpage) { - ehca_err(ib_dev, "ipz_qpageit_get_inc() " - "should not succeed vpage=%p", vpage); - ret = -EINVAL; - goto init_qp_queue1; - } - } else { - if (h_ret != H_PAGE_REGISTERED) { - ehca_err(ib_dev, "hipz_qp_register_rpage() " - "h_ret=%lli", h_ret); - ret = ehca2ib_return_code(h_ret); - goto init_qp_queue1; - } - } - } - - ipz_qeit_reset(queue); - - return 0; - -init_qp_queue1: - ipz_queue_dtor(pd, queue); - return ret; -} - -static inline int ehca_calc_wqe_size(int act_nr_sge, int is_llqp) -{ - if (is_llqp) - return 128 << act_nr_sge; - else - return offsetof(struct ehca_wqe, - u.nud.sg_list[act_nr_sge]); -} - -static void ehca_determine_small_queue(struct ehca_alloc_queue_parms *queue, - int req_nr_sge, int is_llqp) -{ - u32 wqe_size, q_size; - int act_nr_sge = req_nr_sge; - - if (!is_llqp) - /* round up #SGEs so WQE size is a power of 2 */ - for (act_nr_sge = 4; act_nr_sge <= 252; - act_nr_sge = 4 + 2 * act_nr_sge) - if (act_nr_sge >= req_nr_sge) - break; - - wqe_size = ehca_calc_wqe_size(act_nr_sge, is_llqp); - q_size = wqe_size * (queue->max_wr + 1); - - if (q_size <= 512) - queue->page_size = 2; - else if (q_size <= 1024) - queue->page_size = 3; - else - queue->page_size = 0; - - queue->is_small = (queue->page_size != 0); -} - -/* needs to be called with cq->spinlock held */ -void ehca_add_to_err_list(struct ehca_qp *qp, int on_sq) -{ - struct list_head *list, *node; - - /* TODO: support low latency QPs */ - if (qp->ext_type == EQPT_LLQP) - return; - - if (on_sq) { - list = &qp->send_cq->sqp_err_list; - node = &qp->sq_err_node; - } else { - list = &qp->recv_cq->rqp_err_list; - node = &qp->rq_err_node; - } - - if (list_empty(node)) - list_add_tail(node, list); - - return; -} - -static void del_from_err_list(struct ehca_cq *cq, struct list_head *node) -{ - unsigned long flags; - - spin_lock_irqsave(&cq->spinlock, flags); - - if (!list_empty(node)) - list_del_init(node); - - spin_unlock_irqrestore(&cq->spinlock, flags); -} - -static void reset_queue_map(struct ehca_queue_map *qmap) -{ - int i; - - qmap->tail = qmap->entries - 1; - qmap->left_to_poll = 0; - qmap->next_wqe_idx = 0; - for (i = 0; i < qmap->entries; i++) { - qmap->map[i].reported = 1; - qmap->map[i].cqe_req = 0; - } -} - -/* - * Create an ib_qp struct that is either a QP or an SRQ, depending on - * the value of the is_srq parameter. If init_attr and srq_init_attr share - * fields, the field out of init_attr is used. - */ -static struct ehca_qp *internal_create_qp( - struct ib_pd *pd, - struct ib_qp_init_attr *init_attr, - struct ib_srq_init_attr *srq_init_attr, - struct ib_udata *udata, int is_srq) -{ - struct ehca_qp *my_qp, *my_srq = NULL; - struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd); - struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, - ib_device); - struct ib_ucontext *context = NULL; - u64 h_ret; - int is_llqp = 0, has_srq = 0, is_user = 0; - int qp_type, max_send_sge, max_recv_sge, ret; - - /* h_call's out parameters */ - struct ehca_alloc_qp_parms parms; - u32 swqe_size = 0, rwqe_size = 0, ib_qp_num; - unsigned long flags; - - if (!atomic_add_unless(&shca->num_qps, 1, shca->max_num_qps)) { - ehca_err(pd->device, "Unable to create QP, max number of %i " - "QPs reached.", shca->max_num_qps); - ehca_err(pd->device, "To increase the maximum number of QPs " - "use the number_of_qps module parameter.\n"); - return ERR_PTR(-ENOSPC); - } - - if (init_attr->create_flags) { - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - - memset(&parms, 0, sizeof(parms)); - qp_type = init_attr->qp_type; - - if (init_attr->sq_sig_type != IB_SIGNAL_REQ_WR && - init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) { - ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed", - init_attr->sq_sig_type); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - - /* save LLQP info */ - if (qp_type & 0x80) { - is_llqp = 1; - parms.ext_type = EQPT_LLQP; - parms.ll_comp_flags = qp_type & LLQP_COMP_MASK; - } - qp_type &= 0x1F; - init_attr->qp_type &= 0x1F; - - /* handle SRQ base QPs */ - if (init_attr->srq) { - my_srq = container_of(init_attr->srq, struct ehca_qp, ib_srq); - - if (qp_type == IB_QPT_UC) { - ehca_err(pd->device, "UC with SRQ not supported"); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - - has_srq = 1; - parms.ext_type = EQPT_SRQBASE; - parms.srq_qpn = my_srq->real_qp_num; - } - - if (is_llqp && has_srq) { - ehca_err(pd->device, "LLQPs can't have an SRQ"); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - - /* handle SRQs */ - if (is_srq) { - parms.ext_type = EQPT_SRQ; - parms.srq_limit = srq_init_attr->attr.srq_limit; - if (init_attr->cap.max_recv_sge > 3) { - ehca_err(pd->device, "no more than three SGEs " - "supported for SRQ pd=%p max_sge=%x", - pd, init_attr->cap.max_recv_sge); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - } - - /* check QP type */ - if (qp_type != IB_QPT_UD && - qp_type != IB_QPT_UC && - qp_type != IB_QPT_RC && - qp_type != IB_QPT_SMI && - qp_type != IB_QPT_GSI) { - ehca_err(pd->device, "wrong QP Type=%x", qp_type); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - - if (is_llqp) { - switch (qp_type) { - case IB_QPT_RC: - if ((init_attr->cap.max_send_wr > 255) || - (init_attr->cap.max_recv_wr > 255)) { - ehca_err(pd->device, - "Invalid Number of max_sq_wr=%x " - "or max_rq_wr=%x for RC LLQP", - init_attr->cap.max_send_wr, - init_attr->cap.max_recv_wr); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - break; - case IB_QPT_UD: - if (!EHCA_BMASK_GET(HCA_CAP_UD_LL_QP, shca->hca_cap)) { - ehca_err(pd->device, "UD LLQP not supported " - "by this adapter"); - atomic_dec(&shca->num_qps); - return ERR_PTR(-ENOSYS); - } - if (!(init_attr->cap.max_send_sge <= 5 - && init_attr->cap.max_send_sge >= 1 - && init_attr->cap.max_recv_sge <= 5 - && init_attr->cap.max_recv_sge >= 1)) { - ehca_err(pd->device, - "Invalid Number of max_send_sge=%x " - "or max_recv_sge=%x for UD LLQP", - init_attr->cap.max_send_sge, - init_attr->cap.max_recv_sge); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } else if (init_attr->cap.max_send_wr > 255) { - ehca_err(pd->device, - "Invalid Number of " - "max_send_wr=%x for UD QP_TYPE=%x", - init_attr->cap.max_send_wr, qp_type); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - break; - default: - ehca_err(pd->device, "unsupported LL QP Type=%x", - qp_type); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - } else { - int max_sge = (qp_type == IB_QPT_UD || qp_type == IB_QPT_SMI - || qp_type == IB_QPT_GSI) ? 250 : 252; - - if (init_attr->cap.max_send_sge > max_sge - || init_attr->cap.max_recv_sge > max_sge) { - ehca_err(pd->device, "Invalid number of SGEs requested " - "send_sge=%x recv_sge=%x max_sge=%x", - init_attr->cap.max_send_sge, - init_attr->cap.max_recv_sge, max_sge); - atomic_dec(&shca->num_qps); - return ERR_PTR(-EINVAL); - } - } - - my_qp = kmem_cache_zalloc(qp_cache, GFP_KERNEL); - if (!my_qp) { - ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd); - atomic_dec(&shca->num_qps); - return ERR_PTR(-ENOMEM); - } - - if (pd->uobject && udata) { - is_user = 1; - context = pd->uobject->context; - } - - atomic_set(&my_qp->nr_events, 0); - init_waitqueue_head(&my_qp->wait_completion); - spin_lock_init(&my_qp->spinlock_s); - spin_lock_init(&my_qp->spinlock_r); - my_qp->qp_type = qp_type; - my_qp->ext_type = parms.ext_type; - my_qp->state = IB_QPS_RESET; - - if (init_attr->recv_cq) - my_qp->recv_cq = - container_of(init_attr->recv_cq, struct ehca_cq, ib_cq); - if (init_attr->send_cq) - my_qp->send_cq = - container_of(init_attr->send_cq, struct ehca_cq, ib_cq); - - idr_preload(GFP_KERNEL); - write_lock_irqsave(&ehca_qp_idr_lock, flags); - - ret = idr_alloc(&ehca_qp_idr, my_qp, 0, 0x2000000, GFP_NOWAIT); - if (ret >= 0) - my_qp->token = ret; - - write_unlock_irqrestore(&ehca_qp_idr_lock, flags); - idr_preload_end(); - if (ret < 0) { - if (ret == -ENOSPC) { - ret = -EINVAL; - ehca_err(pd->device, "Invalid number of qp"); - } else { - ret = -ENOMEM; - ehca_err(pd->device, "Can't allocate new idr entry."); - } - goto create_qp_exit0; - } - - if (has_srq) - parms.srq_token = my_qp->token; - - parms.servicetype = ibqptype2servicetype(qp_type); - if (parms.servicetype < 0) { - ret = -EINVAL; - ehca_err(pd->device, "Invalid qp_type=%x", qp_type); - goto create_qp_exit1; - } - - /* Always signal by WQE so we can hide circ. WQEs */ - parms.sigtype = HCALL_SIGT_BY_WQE; - - /* UD_AV CIRCUMVENTION */ - max_send_sge = init_attr->cap.max_send_sge; - max_recv_sge = init_attr->cap.max_recv_sge; - if (parms.servicetype == ST_UD && !is_llqp) { - max_send_sge += 2; - max_recv_sge += 2; - } - - parms.token = my_qp->token; - parms.eq_handle = shca->eq.ipz_eq_handle; - parms.pd = my_pd->fw_pd; - if (my_qp->send_cq) - parms.send_cq_handle = my_qp->send_cq->ipz_cq_handle; - if (my_qp->recv_cq) - parms.recv_cq_handle = my_qp->recv_cq->ipz_cq_handle; - - parms.squeue.max_wr = init_attr->cap.max_send_wr; - parms.rqueue.max_wr = init_attr->cap.max_recv_wr; - parms.squeue.max_sge = max_send_sge; - parms.rqueue.max_sge = max_recv_sge; - - /* RC QPs need one more SWQE for unsolicited ack circumvention */ - if (qp_type == IB_QPT_RC) - parms.squeue.max_wr++; - - if (EHCA_BMASK_GET(HCA_CAP_MINI_QP, shca->hca_cap)) { - if (HAS_SQ(my_qp)) - ehca_determine_small_queue( - &parms.squeue, max_send_sge, is_llqp); - if (HAS_RQ(my_qp)) - ehca_determine_small_queue( - &parms.rqueue, max_recv_sge, is_llqp); - parms.qp_storage = - (parms.squeue.is_small || parms.rqueue.is_small); - } - - h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, &parms, is_user); - if (h_ret != H_SUCCESS) { - ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lli", - h_ret); - ret = ehca2ib_return_code(h_ret); - goto create_qp_exit1; - } - - ib_qp_num = my_qp->real_qp_num = parms.real_qp_num; - my_qp->ipz_qp_handle = parms.qp_handle; - my_qp->galpas = parms.galpas; - - swqe_size = ehca_calc_wqe_size(parms.squeue.act_nr_sges, is_llqp); - rwqe_size = ehca_calc_wqe_size(parms.rqueue.act_nr_sges, is_llqp); - - switch (qp_type) { - case IB_QPT_RC: - if (is_llqp) { - parms.squeue.act_nr_sges = 1; - parms.rqueue.act_nr_sges = 1; - } - /* hide the extra WQE */ - parms.squeue.act_nr_wqes--; - break; - case IB_QPT_UD: - case IB_QPT_GSI: - case IB_QPT_SMI: - /* UD circumvention */ - if (is_llqp) { - parms.squeue.act_nr_sges = 1; - parms.rqueue.act_nr_sges = 1; - } else { - parms.squeue.act_nr_sges -= 2; - parms.rqueue.act_nr_sges -= 2; - } - - if (IB_QPT_GSI == qp_type || IB_QPT_SMI == qp_type) { - parms.squeue.act_nr_wqes = init_attr->cap.max_send_wr; - parms.rqueue.act_nr_wqes = init_attr->cap.max_recv_wr; - parms.squeue.act_nr_sges = init_attr->cap.max_send_sge; - parms.rqueue.act_nr_sges = init_attr->cap.max_recv_sge; - ib_qp_num = (qp_type == IB_QPT_SMI) ? 0 : 1; - } - - break; - - default: - break; - } - - /* initialize r/squeue and register queue pages */ - if (HAS_SQ(my_qp)) { - ret = init_qp_queue( - shca, my_pd, my_qp, &my_qp->ipz_squeue, 0, - HAS_RQ(my_qp) ? H_PAGE_REGISTERED : H_SUCCESS, - &parms.squeue, swqe_size); - if (ret) { - ehca_err(pd->device, "Couldn't initialize squeue " - "and pages ret=%i", ret); - goto create_qp_exit2; - } - - if (!is_user) { - my_qp->sq_map.entries = my_qp->ipz_squeue.queue_length / - my_qp->ipz_squeue.qe_size; - my_qp->sq_map.map = vmalloc(my_qp->sq_map.entries * - sizeof(struct ehca_qmap_entry)); - if (!my_qp->sq_map.map) { - ehca_err(pd->device, "Couldn't allocate squeue " - "map ret=%i", ret); - goto create_qp_exit3; - } - INIT_LIST_HEAD(&my_qp->sq_err_node); - /* to avoid the generation of bogus flush CQEs */ - reset_queue_map(&my_qp->sq_map); - } - } - - if (HAS_RQ(my_qp)) { - ret = init_qp_queue( - shca, my_pd, my_qp, &my_qp->ipz_rqueue, 1, - H_SUCCESS, &parms.rqueue, rwqe_size); - if (ret) { - ehca_err(pd->device, "Couldn't initialize rqueue " - "and pages ret=%i", ret); - goto create_qp_exit4; - } - if (!is_user) { - my_qp->rq_map.entries = my_qp->ipz_rqueue.queue_length / - my_qp->ipz_rqueue.qe_size; - my_qp->rq_map.map = vmalloc(my_qp->rq_map.entries * - sizeof(struct ehca_qmap_entry)); - if (!my_qp->rq_map.map) { - ehca_err(pd->device, "Couldn't allocate squeue " - "map ret=%i", ret); - goto create_qp_exit5; - } - INIT_LIST_HEAD(&my_qp->rq_err_node); - /* to avoid the generation of bogus flush CQEs */ - reset_queue_map(&my_qp->rq_map); - } - } else if (init_attr->srq && !is_user) { - /* this is a base QP, use the queue map of the SRQ */ - my_qp->rq_map = my_srq->rq_map; - INIT_LIST_HEAD(&my_qp->rq_err_node); - - my_qp->ipz_rqueue = my_srq->ipz_rqueue; - } - - if (is_srq) { - my_qp->ib_srq.pd = &my_pd->ib_pd; - my_qp->ib_srq.device = my_pd->ib_pd.device; - - my_qp->ib_srq.srq_context = init_attr->qp_context; - my_qp->ib_srq.event_handler = init_attr->event_handler; - } else { - my_qp->ib_qp.qp_num = ib_qp_num; - my_qp->ib_qp.pd = &my_pd->ib_pd; - my_qp->ib_qp.device = my_pd->ib_pd.device; - - my_qp->ib_qp.recv_cq = init_attr->recv_cq; - my_qp->ib_qp.send_cq = init_attr->send_cq; - - my_qp->ib_qp.qp_type = qp_type; - my_qp->ib_qp.srq = init_attr->srq; - - my_qp->ib_qp.qp_context = init_attr->qp_context; - my_qp->ib_qp.event_handler = init_attr->event_handler; - } - - init_attr->cap.max_inline_data = 0; /* not supported yet */ - init_attr->cap.max_recv_sge = parms.rqueue.act_nr_sges; - init_attr->cap.max_recv_wr = parms.rqueue.act_nr_wqes; - init_attr->cap.max_send_sge = parms.squeue.act_nr_sges; - init_attr->cap.max_send_wr = parms.squeue.act_nr_wqes; - my_qp->init_attr = *init_attr; - - if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) { - shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] = - &my_qp->ib_qp; - if (ehca_nr_ports < 0) { - /* alloc array to cache subsequent modify qp parms - * for autodetect mode - */ - my_qp->mod_qp_parm = - kzalloc(EHCA_MOD_QP_PARM_MAX * - sizeof(*my_qp->mod_qp_parm), - GFP_KERNEL); - if (!my_qp->mod_qp_parm) { - ehca_err(pd->device, - "Could not alloc mod_qp_parm"); - goto create_qp_exit5; - } - } - } - - /* NOTE: define_apq0() not supported yet */ - if (qp_type == IB_QPT_GSI) { - h_ret = ehca_define_sqp(shca, my_qp, init_attr); - if (h_ret != H_SUCCESS) { - kfree(my_qp->mod_qp_parm); - my_qp->mod_qp_parm = NULL; - /* the QP pointer is no longer valid */ - shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] = - NULL; - ret = ehca2ib_return_code(h_ret); - goto create_qp_exit6; - } - } - - if (my_qp->send_cq) { - ret = ehca_cq_assign_qp(my_qp->send_cq, my_qp); - if (ret) { - ehca_err(pd->device, - "Couldn't assign qp to send_cq ret=%i", ret); - goto create_qp_exit7; - } - } - - /* copy queues, galpa data to user space */ - if (context && udata) { - struct ehca_create_qp_resp resp; - memset(&resp, 0, sizeof(resp)); - - resp.qp_num = my_qp->real_qp_num; - resp.token = my_qp->token; - resp.qp_type = my_qp->qp_type; - resp.ext_type = my_qp->ext_type; - resp.qkey = my_qp->qkey; - resp.real_qp_num = my_qp->real_qp_num; - - if (HAS_SQ(my_qp)) - queue2resp(&resp.ipz_squeue, &my_qp->ipz_squeue); - if (HAS_RQ(my_qp)) - queue2resp(&resp.ipz_rqueue, &my_qp->ipz_rqueue); - resp.fw_handle_ofs = (u32) - (my_qp->galpas.user.fw_handle & (PAGE_SIZE - 1)); - - if (ib_copy_to_udata(udata, &resp, sizeof resp)) { - ehca_err(pd->device, "Copy to udata failed"); - ret = -EINVAL; - goto create_qp_exit8; - } - } - - return my_qp; - -create_qp_exit8: - ehca_cq_unassign_qp(my_qp->send_cq, my_qp->real_qp_num); - -create_qp_exit7: - kfree(my_qp->mod_qp_parm); - -create_qp_exit6: - if (HAS_RQ(my_qp) && !is_user) - vfree(my_qp->rq_map.map); - -create_qp_exit5: - if (HAS_RQ(my_qp)) - ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue); - -create_qp_exit4: - if (HAS_SQ(my_qp) && !is_user) - vfree(my_qp->sq_map.map); - -create_qp_exit3: - if (HAS_SQ(my_qp)) - ipz_queue_dtor(my_pd, &my_qp->ipz_squeue); - -create_qp_exit2: - hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp); - -create_qp_exit1: - write_lock_irqsave(&ehca_qp_idr_lock, flags); - idr_remove(&ehca_qp_idr, my_qp->token); - write_unlock_irqrestore(&ehca_qp_idr_lock, flags); - -create_qp_exit0: - kmem_cache_free(qp_cache, my_qp); - atomic_dec(&shca->num_qps); - return ERR_PTR(ret); -} - -struct ib_qp *ehca_create_qp(struct ib_pd *pd, - struct ib_qp_init_attr *qp_init_attr, - struct ib_udata *udata) -{ - struct ehca_qp *ret; - - ret = internal_create_qp(pd, qp_init_attr, NULL, udata, 0); - return IS_ERR(ret) ? (struct ib_qp *)ret : &ret->ib_qp; -} - -static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp, - struct ib_uobject *uobject); - -struct ib_srq *ehca_create_srq(struct ib_pd *pd, - struct ib_srq_init_attr *srq_init_attr, - struct ib_udata *udata) -{ - struct ib_qp_init_attr qp_init_attr; - struct ehca_qp *my_qp; - struct ib_srq *ret; - struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, - ib_device); - struct hcp_modify_qp_control_block *mqpcb; - u64 hret, update_mask; - - if (srq_init_attr->srq_type != IB_SRQT_BASIC) - return ERR_PTR(-ENOSYS); - - /* For common attributes, internal_create_qp() takes its info - * out of qp_init_attr, so copy all common attrs there. - */ - memset(&qp_init_attr, 0, sizeof(qp_init_attr)); - qp_init_attr.event_handler = srq_init_attr->event_handler; - qp_init_attr.qp_context = srq_init_attr->srq_context; - qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; - qp_init_attr.qp_type = IB_QPT_RC; - qp_init_attr.cap.max_recv_wr = srq_init_attr->attr.max_wr; - qp_init_attr.cap.max_recv_sge = srq_init_attr->attr.max_sge; - - my_qp = internal_create_qp(pd, &qp_init_attr, srq_init_attr, udata, 1); - if (IS_ERR(my_qp)) - return (struct ib_srq *)my_qp; - - /* copy back return values */ - srq_init_attr->attr.max_wr = qp_init_attr.cap.max_recv_wr; - srq_init_attr->attr.max_sge = 3; - - /* drive SRQ into RTR state */ - mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!mqpcb) { - ehca_err(pd->device, "Could not get zeroed page for mqpcb " - "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num); - ret = ERR_PTR(-ENOMEM); - goto create_srq1; - } - - mqpcb->qp_state = EHCA_QPS_INIT; - mqpcb->prim_phys_port = 1; - update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1); - hret = hipz_h_modify_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - update_mask, - mqpcb, my_qp->galpas.kernel); - if (hret != H_SUCCESS) { - ehca_err(pd->device, "Could not modify SRQ to INIT " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, my_qp->real_qp_num, hret); - goto create_srq2; - } - - mqpcb->qp_enable = 1; - update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1); - hret = hipz_h_modify_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - update_mask, - mqpcb, my_qp->galpas.kernel); - if (hret != H_SUCCESS) { - ehca_err(pd->device, "Could not enable SRQ " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, my_qp->real_qp_num, hret); - goto create_srq2; - } - - mqpcb->qp_state = EHCA_QPS_RTR; - update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1); - hret = hipz_h_modify_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - update_mask, - mqpcb, my_qp->galpas.kernel); - if (hret != H_SUCCESS) { - ehca_err(pd->device, "Could not modify SRQ to RTR " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, my_qp->real_qp_num, hret); - goto create_srq2; - } - - ehca_free_fw_ctrlblock(mqpcb); - - return &my_qp->ib_srq; - -create_srq2: - ret = ERR_PTR(ehca2ib_return_code(hret)); - ehca_free_fw_ctrlblock(mqpcb); - -create_srq1: - internal_destroy_qp(pd->device, my_qp, my_qp->ib_srq.uobject); - - return ret; -} - -/* - * prepare_sqe_rts called by internal_modify_qp() at trans sqe -> rts - * set purge bit of bad wqe and subsequent wqes to avoid reentering sqe - * returns total number of bad wqes in bad_wqe_cnt - */ -static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca, - int *bad_wqe_cnt) -{ - u64 h_ret; - struct ipz_queue *squeue; - void *bad_send_wqe_p, *bad_send_wqe_v; - u64 q_ofs; - struct ehca_wqe *wqe; - int qp_num = my_qp->ib_qp.qp_num; - - /* get send wqe pointer */ - h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, &my_qp->pf, - &bad_send_wqe_p, NULL, 2); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed" - " ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, qp_num, h_ret); - return ehca2ib_return_code(h_ret); - } - bad_send_wqe_p = (void *)((u64)bad_send_wqe_p & (~(1L << 63))); - ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p", - qp_num, bad_send_wqe_p); - /* convert wqe pointer to vadr */ - bad_send_wqe_v = __va((u64)bad_send_wqe_p); - if (ehca_debug_level >= 2) - ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num); - squeue = &my_qp->ipz_squeue; - if (ipz_queue_abs_to_offset(squeue, (u64)bad_send_wqe_p, &q_ofs)) { - ehca_err(&shca->ib_device, "failed to get wqe offset qp_num=%x" - " bad_send_wqe_p=%p", qp_num, bad_send_wqe_p); - return -EFAULT; - } - - /* loop sets wqe's purge bit */ - wqe = (struct ehca_wqe *)ipz_qeit_calc(squeue, q_ofs); - *bad_wqe_cnt = 0; - while (wqe->optype != 0xff && wqe->wqef != 0xff) { - if (ehca_debug_level >= 2) - ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num); - wqe->nr_of_data_seg = 0; /* suppress data access */ - wqe->wqef = WQEF_PURGE; /* WQE to be purged */ - q_ofs = ipz_queue_advance_offset(squeue, q_ofs); - wqe = (struct ehca_wqe *)ipz_qeit_calc(squeue, q_ofs); - *bad_wqe_cnt = (*bad_wqe_cnt)+1; - } - /* - * bad wqe will be reprocessed and ignored when pol_cq() is called, - * i.e. nr of wqes with flush error status is one less - */ - ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x", - qp_num, (*bad_wqe_cnt)-1); - wqe->wqef = 0; - - return 0; -} - -static int calc_left_cqes(u64 wqe_p, struct ipz_queue *ipz_queue, - struct ehca_queue_map *qmap) -{ - void *wqe_v; - u64 q_ofs; - u32 wqe_idx; - unsigned int tail_idx; - - /* convert real to abs address */ - wqe_p = wqe_p & (~(1UL << 63)); - - wqe_v = __va(wqe_p); - - if (ipz_queue_abs_to_offset(ipz_queue, wqe_p, &q_ofs)) { - ehca_gen_err("Invalid offset for calculating left cqes " - "wqe_p=%#llx wqe_v=%p\n", wqe_p, wqe_v); - return -EFAULT; - } - - tail_idx = next_index(qmap->tail, qmap->entries); - wqe_idx = q_ofs / ipz_queue->qe_size; - - /* check all processed wqes, whether a cqe is requested or not */ - while (tail_idx != wqe_idx) { - if (qmap->map[tail_idx].cqe_req) - qmap->left_to_poll++; - tail_idx = next_index(tail_idx, qmap->entries); - } - /* save index in queue, where we have to start flushing */ - qmap->next_wqe_idx = wqe_idx; - return 0; -} - -static int check_for_left_cqes(struct ehca_qp *my_qp, struct ehca_shca *shca) -{ - u64 h_ret; - void *send_wqe_p, *recv_wqe_p; - int ret; - unsigned long flags; - int qp_num = my_qp->ib_qp.qp_num; - - /* this hcall is not supported on base QPs */ - if (my_qp->ext_type != EQPT_SRQBASE) { - /* get send and receive wqe pointer */ - h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, &my_qp->pf, - &send_wqe_p, &recv_wqe_p, 4); - if (h_ret != H_SUCCESS) { - ehca_err(&shca->ib_device, "disable_and_get_wqe() " - "failed ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, qp_num, h_ret); - return ehca2ib_return_code(h_ret); - } - - /* - * acquire lock to ensure that nobody is polling the cq which - * could mean that the qmap->tail pointer is in an - * inconsistent state. - */ - spin_lock_irqsave(&my_qp->send_cq->spinlock, flags); - ret = calc_left_cqes((u64)send_wqe_p, &my_qp->ipz_squeue, - &my_qp->sq_map); - spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags); - if (ret) - return ret; - - - spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags); - ret = calc_left_cqes((u64)recv_wqe_p, &my_qp->ipz_rqueue, - &my_qp->rq_map); - spin_unlock_irqrestore(&my_qp->recv_cq->spinlock, flags); - if (ret) - return ret; - } else { - spin_lock_irqsave(&my_qp->send_cq->spinlock, flags); - my_qp->sq_map.left_to_poll = 0; - my_qp->sq_map.next_wqe_idx = next_index(my_qp->sq_map.tail, - my_qp->sq_map.entries); - spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags); - - spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags); - my_qp->rq_map.left_to_poll = 0; - my_qp->rq_map.next_wqe_idx = next_index(my_qp->rq_map.tail, - my_qp->rq_map.entries); - spin_unlock_irqrestore(&my_qp->recv_cq->spinlock, flags); - } - - /* this assures flush cqes being generated only for pending wqes */ - if ((my_qp->sq_map.left_to_poll == 0) && - (my_qp->rq_map.left_to_poll == 0)) { - spin_lock_irqsave(&my_qp->send_cq->spinlock, flags); - ehca_add_to_err_list(my_qp, 1); - spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags); - - if (HAS_RQ(my_qp)) { - spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags); - ehca_add_to_err_list(my_qp, 0); - spin_unlock_irqrestore(&my_qp->recv_cq->spinlock, - flags); - } - } - - return 0; -} - -/* - * internal_modify_qp with circumvention to handle aqp0 properly - * smi_reset2init indicates if this is an internal reset-to-init-call for - * smi. This flag must always be zero if called from ehca_modify_qp()! - * This internal func was intorduced to avoid recursion of ehca_modify_qp()! - */ -static int internal_modify_qp(struct ib_qp *ibqp, - struct ib_qp_attr *attr, - int attr_mask, int smi_reset2init) -{ - enum ib_qp_state qp_cur_state, qp_new_state; - int cnt, qp_attr_idx, ret = 0; - enum ib_qp_statetrans statetrans; - struct hcp_modify_qp_control_block *mqpcb; - struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); - struct ehca_shca *shca = - container_of(ibqp->pd->device, struct ehca_shca, ib_device); - u64 update_mask; - u64 h_ret; - int bad_wqe_cnt = 0; - int is_user = 0; - int squeue_locked = 0; - unsigned long flags = 0; - - /* do query_qp to obtain current attr values */ - mqpcb = ehca_alloc_fw_ctrlblock(GFP_ATOMIC); - if (!mqpcb) { - ehca_err(ibqp->device, "Could not get zeroed page for mqpcb " - "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num); - return -ENOMEM; - } - - h_ret = hipz_h_query_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - mqpcb, my_qp->galpas.kernel); - if (h_ret != H_SUCCESS) { - ehca_err(ibqp->device, "hipz_h_query_qp() failed " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, ibqp->qp_num, h_ret); - ret = ehca2ib_return_code(h_ret); - goto modify_qp_exit1; - } - if (ibqp->uobject) - is_user = 1; - - qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state); - - if (qp_cur_state == -EINVAL) { /* invalid qp state */ - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x " - "ehca_qp=%p qp_num=%x", - mqpcb->qp_state, my_qp, ibqp->qp_num); - goto modify_qp_exit1; - } - /* - * circumvention to set aqp0 initial state to init - * as expected by IB spec - */ - if (smi_reset2init == 0 && - ibqp->qp_type == IB_QPT_SMI && - qp_cur_state == IB_QPS_RESET && - (attr_mask & IB_QP_STATE) && - attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */ - struct ib_qp_attr smiqp_attr = { - .qp_state = IB_QPS_INIT, - .port_num = my_qp->init_attr.port_num, - .pkey_index = 0, - .qkey = 0 - }; - int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT | - IB_QP_PKEY_INDEX | IB_QP_QKEY; - int smirc = internal_modify_qp( - ibqp, &smiqp_attr, smiqp_attr_mask, 1); - if (smirc) { - ehca_err(ibqp->device, "SMI RESET -> INIT failed. " - "ehca_modify_qp() rc=%i", smirc); - ret = H_PARAMETER; - goto modify_qp_exit1; - } - qp_cur_state = IB_QPS_INIT; - ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded"); - } - /* is transmitted current state equal to "real" current state */ - if ((attr_mask & IB_QP_CUR_STATE) && - qp_cur_state != attr->cur_qp_state) { - ret = -EINVAL; - ehca_err(ibqp->device, - "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>" - " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x", - attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num); - goto modify_qp_exit1; - } - - ehca_dbg(ibqp->device, "ehca_qp=%p qp_num=%x current qp_state=%x " - "new qp_state=%x attribute_mask=%x", - my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask); - - qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state; - if (!smi_reset2init && - !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type, - attr_mask, IB_LINK_LAYER_UNSPECIFIED)) { - ret = -EINVAL; - ehca_err(ibqp->device, - "Invalid qp transition new_state=%x cur_state=%x " - "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state, - qp_cur_state, my_qp, ibqp->qp_num, attr_mask); - goto modify_qp_exit1; - } - - mqpcb->qp_state = ib2ehca_qp_state(qp_new_state); - if (mqpcb->qp_state) - update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1); - else { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid new qp state=%x " - "ehca_qp=%p qp_num=%x", - qp_new_state, my_qp, ibqp->qp_num); - goto modify_qp_exit1; - } - - /* retrieve state transition struct to get req and opt attrs */ - statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state); - if (statetrans < 0) { - ret = -EINVAL; - ehca_err(ibqp->device, " qp_cur_state=%x " - "new_qp_state=%x State_xsition=%x ehca_qp=%p " - "qp_num=%x", qp_cur_state, qp_new_state, - statetrans, my_qp, ibqp->qp_num); - goto modify_qp_exit1; - } - - qp_attr_idx = ib2ehcaqptype(ibqp->qp_type); - - if (qp_attr_idx < 0) { - ret = qp_attr_idx; - ehca_err(ibqp->device, - "Invalid QP type=%x ehca_qp=%p qp_num=%x", - ibqp->qp_type, my_qp, ibqp->qp_num); - goto modify_qp_exit1; - } - - ehca_dbg(ibqp->device, - "ehca_qp=%p qp_num=%x qp_state_xsit=%x", - my_qp, ibqp->qp_num, statetrans); - - /* eHCA2 rev2 and higher require the SEND_GRH_FLAG to be set - * in non-LL UD QPs. - */ - if ((my_qp->qp_type == IB_QPT_UD) && - (my_qp->ext_type != EQPT_LLQP) && - (statetrans == IB_QPST_INIT2RTR) && - (shca->hw_level >= 0x22)) { - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1); - mqpcb->send_grh_flag = 1; - } - - /* sqe -> rts: set purge bit of bad wqe before actual trans */ - if ((my_qp->qp_type == IB_QPT_UD || - my_qp->qp_type == IB_QPT_GSI || - my_qp->qp_type == IB_QPT_SMI) && - statetrans == IB_QPST_SQE2RTS) { - /* mark next free wqe if kernel */ - if (!ibqp->uobject) { - struct ehca_wqe *wqe; - /* lock send queue */ - spin_lock_irqsave(&my_qp->spinlock_s, flags); - squeue_locked = 1; - /* mark next free wqe */ - wqe = (struct ehca_wqe *) - ipz_qeit_get(&my_qp->ipz_squeue); - wqe->optype = wqe->wqef = 0xff; - ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p", - ibqp->qp_num, wqe); - } - ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt); - if (ret) { - ehca_err(ibqp->device, "prepare_sqe_rts() failed " - "ehca_qp=%p qp_num=%x ret=%i", - my_qp, ibqp->qp_num, ret); - goto modify_qp_exit2; - } - } - - /* - * enable RDMA_Atomic_Control if reset->init und reliable con - * this is necessary since gen2 does not provide that flag, - * but pHyp requires it - */ - if (statetrans == IB_QPST_RESET2INIT && - (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) { - mqpcb->rdma_atomic_ctrl = 3; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1); - } - /* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */ - if (statetrans == IB_QPST_INIT2RTR && - (ibqp->qp_type == IB_QPT_UC) && - !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) { - mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */ - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1); - } - - if (attr_mask & IB_QP_PKEY_INDEX) { - if (attr->pkey_index >= 16) { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid pkey_index=%x. " - "ehca_qp=%p qp_num=%x max_pkey_index=f", - attr->pkey_index, my_qp, ibqp->qp_num); - goto modify_qp_exit2; - } - mqpcb->prim_p_key_idx = attr->pkey_index; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1); - } - if (attr_mask & IB_QP_PORT) { - struct ehca_sport *sport; - struct ehca_qp *aqp1; - if (attr->port_num < 1 || attr->port_num > shca->num_ports) { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid port=%x. " - "ehca_qp=%p qp_num=%x num_ports=%x", - attr->port_num, my_qp, ibqp->qp_num, - shca->num_ports); - goto modify_qp_exit2; - } - sport = &shca->sport[attr->port_num - 1]; - if (!sport->ibqp_sqp[IB_QPT_GSI]) { - /* should not occur */ - ret = -EFAULT; - ehca_err(ibqp->device, "AQP1 was not created for " - "port=%x", attr->port_num); - goto modify_qp_exit2; - } - aqp1 = container_of(sport->ibqp_sqp[IB_QPT_GSI], - struct ehca_qp, ib_qp); - if (ibqp->qp_type != IB_QPT_GSI && - ibqp->qp_type != IB_QPT_SMI && - aqp1->mod_qp_parm) { - /* - * firmware will reject this modify_qp() because - * port is not activated/initialized fully - */ - ret = -EFAULT; - ehca_warn(ibqp->device, "Couldn't modify qp port=%x: " - "either port is being activated (try again) " - "or cabling issue", attr->port_num); - goto modify_qp_exit2; - } - mqpcb->prim_phys_port = attr->port_num; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1); - } - if (attr_mask & IB_QP_QKEY) { - mqpcb->qkey = attr->qkey; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1); - } - if (attr_mask & IB_QP_AV) { - mqpcb->dlid = attr->ah_attr.dlid; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1); - mqpcb->source_path_bits = attr->ah_attr.src_path_bits; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1); - mqpcb->service_level = attr->ah_attr.sl; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1); - - if (ehca_calc_ipd(shca, mqpcb->prim_phys_port, - attr->ah_attr.static_rate, - &mqpcb->max_static_rate)) { - ret = -EINVAL; - goto modify_qp_exit2; - } - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1); - - /* - * Always supply the GRH flag, even if it's zero, to give the - * hypervisor a clear "yes" or "no" instead of a "perhaps" - */ - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1); - - /* - * only if GRH is TRUE we might consider SOURCE_GID_IDX - * and DEST_GID otherwise phype will return H_ATTR_PARM!!! - */ - if (attr->ah_attr.ah_flags == IB_AH_GRH) { - mqpcb->send_grh_flag = 1; - - mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1); - - for (cnt = 0; cnt < 16; cnt++) - mqpcb->dest_gid.byte[cnt] = - attr->ah_attr.grh.dgid.raw[cnt]; - - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1); - mqpcb->flow_label = attr->ah_attr.grh.flow_label; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1); - mqpcb->hop_limit = attr->ah_attr.grh.hop_limit; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1); - mqpcb->traffic_class = attr->ah_attr.grh.traffic_class; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1); - } - } - - if (attr_mask & IB_QP_PATH_MTU) { - /* store ld(MTU) */ - my_qp->mtu_shift = attr->path_mtu + 7; - mqpcb->path_mtu = attr->path_mtu; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1); - } - if (attr_mask & IB_QP_TIMEOUT) { - mqpcb->timeout = attr->timeout; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1); - } - if (attr_mask & IB_QP_RETRY_CNT) { - mqpcb->retry_count = attr->retry_cnt; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1); - } - if (attr_mask & IB_QP_RNR_RETRY) { - mqpcb->rnr_retry_count = attr->rnr_retry; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1); - } - if (attr_mask & IB_QP_RQ_PSN) { - mqpcb->receive_psn = attr->rq_psn; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1); - } - if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { - mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ? - attr->max_dest_rd_atomic : 2; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1); - } - if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { - mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ? - attr->max_rd_atomic : 2; - update_mask |= - EHCA_BMASK_SET - (MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1); - } - if (attr_mask & IB_QP_ALT_PATH) { - if (attr->alt_port_num < 1 - || attr->alt_port_num > shca->num_ports) { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid alt_port=%x. " - "ehca_qp=%p qp_num=%x num_ports=%x", - attr->alt_port_num, my_qp, ibqp->qp_num, - shca->num_ports); - goto modify_qp_exit2; - } - mqpcb->alt_phys_port = attr->alt_port_num; - - if (attr->alt_pkey_index >= 16) { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid alt_pkey_index=%x. " - "ehca_qp=%p qp_num=%x max_pkey_index=f", - attr->pkey_index, my_qp, ibqp->qp_num); - goto modify_qp_exit2; - } - mqpcb->alt_p_key_idx = attr->alt_pkey_index; - - mqpcb->timeout_al = attr->alt_timeout; - mqpcb->dlid_al = attr->alt_ah_attr.dlid; - mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits; - mqpcb->service_level_al = attr->alt_ah_attr.sl; - - if (ehca_calc_ipd(shca, mqpcb->alt_phys_port, - attr->alt_ah_attr.static_rate, - &mqpcb->max_static_rate_al)) { - ret = -EINVAL; - goto modify_qp_exit2; - } - - /* OpenIB doesn't support alternate retry counts - copy them */ - mqpcb->retry_count_al = mqpcb->retry_count; - mqpcb->rnr_retry_count_al = mqpcb->rnr_retry_count; - - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_ALT_PHYS_PORT, 1) - | EHCA_BMASK_SET(MQPCB_MASK_ALT_P_KEY_IDX, 1) - | EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT_AL, 1); - - /* - * Always supply the GRH flag, even if it's zero, to give the - * hypervisor a clear "yes" or "no" instead of a "perhaps" - */ - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1); - - /* - * only if GRH is TRUE we might consider SOURCE_GID_IDX - * and DEST_GID otherwise phype will return H_ATTR_PARM!!! - */ - if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) { - mqpcb->send_grh_flag_al = 1; - - for (cnt = 0; cnt < 16; cnt++) - mqpcb->dest_gid_al.byte[cnt] = - attr->alt_ah_attr.grh.dgid.raw[cnt]; - mqpcb->source_gid_idx_al = - attr->alt_ah_attr.grh.sgid_index; - mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label; - mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit; - mqpcb->traffic_class_al = - attr->alt_ah_attr.grh.traffic_class; - - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1) - | EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1) | - EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1); - } - } - - if (attr_mask & IB_QP_MIN_RNR_TIMER) { - mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1); - } - - if (attr_mask & IB_QP_SQ_PSN) { - mqpcb->send_psn = attr->sq_psn; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1); - } - - if (attr_mask & IB_QP_DEST_QPN) { - mqpcb->dest_qp_nr = attr->dest_qp_num; - update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1); - } - - if (attr_mask & IB_QP_PATH_MIG_STATE) { - if (attr->path_mig_state != IB_MIG_REARM - && attr->path_mig_state != IB_MIG_MIGRATED) { - ret = -EINVAL; - ehca_err(ibqp->device, "Invalid mig_state=%x", - attr->path_mig_state); - goto modify_qp_exit2; - } - mqpcb->path_migration_state = attr->path_mig_state + 1; - if (attr->path_mig_state == IB_MIG_REARM) - my_qp->mig_armed = 1; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1); - } - - if (attr_mask & IB_QP_CAP) { - mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1); - mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1); - /* no support for max_send/recv_sge yet */ - } - - if (ehca_debug_level >= 2) - ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num); - - h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - update_mask, - mqpcb, my_qp->galpas.kernel); - - if (h_ret != H_SUCCESS) { - ret = ehca2ib_return_code(h_ret); - ehca_err(ibqp->device, "hipz_h_modify_qp() failed h_ret=%lli " - "ehca_qp=%p qp_num=%x", h_ret, my_qp, ibqp->qp_num); - goto modify_qp_exit2; - } - - if ((my_qp->qp_type == IB_QPT_UD || - my_qp->qp_type == IB_QPT_GSI || - my_qp->qp_type == IB_QPT_SMI) && - statetrans == IB_QPST_SQE2RTS) { - /* doorbell to reprocessing wqes */ - iosync(); /* serialize GAL register access */ - hipz_update_sqa(my_qp, bad_wqe_cnt-1); - ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt); - } - - if (statetrans == IB_QPST_RESET2INIT || - statetrans == IB_QPST_INIT2INIT) { - mqpcb->qp_enable = 1; - mqpcb->qp_state = EHCA_QPS_INIT; - update_mask = 0; - update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1); - - h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - update_mask, - mqpcb, - my_qp->galpas.kernel); - - if (h_ret != H_SUCCESS) { - ret = ehca2ib_return_code(h_ret); - ehca_err(ibqp->device, "ENABLE in context of " - "RESET_2_INIT failed! Maybe you didn't get " - "a LID h_ret=%lli ehca_qp=%p qp_num=%x", - h_ret, my_qp, ibqp->qp_num); - goto modify_qp_exit2; - } - } - if ((qp_new_state == IB_QPS_ERR) && (qp_cur_state != IB_QPS_ERR) - && !is_user) { - ret = check_for_left_cqes(my_qp, shca); - if (ret) - goto modify_qp_exit2; - } - - if (statetrans == IB_QPST_ANY2RESET) { - ipz_qeit_reset(&my_qp->ipz_rqueue); - ipz_qeit_reset(&my_qp->ipz_squeue); - - if (qp_cur_state == IB_QPS_ERR && !is_user) { - del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node); - - if (HAS_RQ(my_qp)) - del_from_err_list(my_qp->recv_cq, - &my_qp->rq_err_node); - } - if (!is_user) - reset_queue_map(&my_qp->sq_map); - - if (HAS_RQ(my_qp) && !is_user) - reset_queue_map(&my_qp->rq_map); - } - - if (attr_mask & IB_QP_QKEY) - my_qp->qkey = attr->qkey; - -modify_qp_exit2: - if (squeue_locked) { /* this means: sqe -> rts */ - spin_unlock_irqrestore(&my_qp->spinlock_s, flags); - my_qp->sqerr_purgeflag = 1; - } - -modify_qp_exit1: - ehca_free_fw_ctrlblock(mqpcb); - - return ret; -} - -int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, - struct ib_udata *udata) -{ - int ret = 0; - - struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca, - ib_device); - struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); - - /* The if-block below caches qp_attr to be modified for GSI and SMI - * qps during the initialization by ib_mad. When the respective port - * is activated, ie we got an event PORT_ACTIVE, we'll replay the - * cached modify calls sequence, see ehca_recover_sqs() below. - * Why that is required: - * 1) If one port is connected, older code requires that port one - * to be connected and module option nr_ports=1 to be given by - * user, which is very inconvenient for end user. - * 2) Firmware accepts modify_qp() only if respective port has become - * active. Older code had a wait loop of 30sec create_qp()/ - * define_aqp1(), which is not appropriate in practice. This - * code now removes that wait loop, see define_aqp1(), and always - * reports all ports to ib_mad resp. users. Only activated ports - * will then usable for the users. - */ - if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) { - int port = my_qp->init_attr.port_num; - struct ehca_sport *sport = &shca->sport[port - 1]; - unsigned long flags; - spin_lock_irqsave(&sport->mod_sqp_lock, flags); - /* cache qp_attr only during init */ - if (my_qp->mod_qp_parm) { - struct ehca_mod_qp_parm *p; - if (my_qp->mod_qp_parm_idx >= EHCA_MOD_QP_PARM_MAX) { - ehca_err(&shca->ib_device, - "mod_qp_parm overflow state=%x port=%x" - " type=%x", attr->qp_state, - my_qp->init_attr.port_num, - ibqp->qp_type); - spin_unlock_irqrestore(&sport->mod_sqp_lock, - flags); - return -EINVAL; - } - p = &my_qp->mod_qp_parm[my_qp->mod_qp_parm_idx]; - p->mask = attr_mask; - p->attr = *attr; - my_qp->mod_qp_parm_idx++; - ehca_dbg(&shca->ib_device, - "Saved qp_attr for state=%x port=%x type=%x", - attr->qp_state, my_qp->init_attr.port_num, - ibqp->qp_type); - spin_unlock_irqrestore(&sport->mod_sqp_lock, flags); - goto out; - } - spin_unlock_irqrestore(&sport->mod_sqp_lock, flags); - } - - ret = internal_modify_qp(ibqp, attr, attr_mask, 0); - -out: - if ((ret == 0) && (attr_mask & IB_QP_STATE)) - my_qp->state = attr->qp_state; - - return ret; -} - -void ehca_recover_sqp(struct ib_qp *sqp) -{ - struct ehca_qp *my_sqp = container_of(sqp, struct ehca_qp, ib_qp); - int port = my_sqp->init_attr.port_num; - struct ib_qp_attr attr; - struct ehca_mod_qp_parm *qp_parm; - int i, qp_parm_idx, ret; - unsigned long flags, wr_cnt; - - if (!my_sqp->mod_qp_parm) - return; - ehca_dbg(sqp->device, "SQP port=%x qp_num=%x", port, sqp->qp_num); - - qp_parm = my_sqp->mod_qp_parm; - qp_parm_idx = my_sqp->mod_qp_parm_idx; - for (i = 0; i < qp_parm_idx; i++) { - attr = qp_parm[i].attr; - ret = internal_modify_qp(sqp, &attr, qp_parm[i].mask, 0); - if (ret) { - ehca_err(sqp->device, "Could not modify SQP port=%x " - "qp_num=%x ret=%x", port, sqp->qp_num, ret); - goto free_qp_parm; - } - ehca_dbg(sqp->device, "SQP port=%x qp_num=%x in state=%x", - port, sqp->qp_num, attr.qp_state); - } - - /* re-trigger posted recv wrs */ - wr_cnt = my_sqp->ipz_rqueue.current_q_offset / - my_sqp->ipz_rqueue.qe_size; - if (wr_cnt) { - spin_lock_irqsave(&my_sqp->spinlock_r, flags); - hipz_update_rqa(my_sqp, wr_cnt); - spin_unlock_irqrestore(&my_sqp->spinlock_r, flags); - ehca_dbg(sqp->device, "doorbell port=%x qp_num=%x wr_cnt=%lx", - port, sqp->qp_num, wr_cnt); - } - -free_qp_parm: - kfree(qp_parm); - /* this prevents subsequent calls to modify_qp() to cache qp_attr */ - my_sqp->mod_qp_parm = NULL; -} - -int ehca_query_qp(struct ib_qp *qp, - struct ib_qp_attr *qp_attr, - int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) -{ - struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp); - struct ehca_shca *shca = container_of(qp->device, struct ehca_shca, - ib_device); - struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle; - struct hcp_modify_qp_control_block *qpcb; - int cnt, ret = 0; - u64 h_ret; - - if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) { - ehca_err(qp->device, "Invalid attribute mask " - "ehca_qp=%p qp_num=%x qp_attr_mask=%x ", - my_qp, qp->qp_num, qp_attr_mask); - return -EINVAL; - } - - qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!qpcb) { - ehca_err(qp->device, "Out of memory for qpcb " - "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num); - return -ENOMEM; - } - - h_ret = hipz_h_query_qp(adapter_handle, - my_qp->ipz_qp_handle, - &my_qp->pf, - qpcb, my_qp->galpas.kernel); - - if (h_ret != H_SUCCESS) { - ret = ehca2ib_return_code(h_ret); - ehca_err(qp->device, "hipz_h_query_qp() failed " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, qp->qp_num, h_ret); - goto query_qp_exit1; - } - - qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state); - qp_attr->qp_state = qp_attr->cur_qp_state; - - if (qp_attr->cur_qp_state == -EINVAL) { - ret = -EINVAL; - ehca_err(qp->device, "Got invalid ehca_qp_state=%x " - "ehca_qp=%p qp_num=%x", - qpcb->qp_state, my_qp, qp->qp_num); - goto query_qp_exit1; - } - - if (qp_attr->qp_state == IB_QPS_SQD) - qp_attr->sq_draining = 1; - - qp_attr->qkey = qpcb->qkey; - qp_attr->path_mtu = qpcb->path_mtu; - qp_attr->path_mig_state = qpcb->path_migration_state - 1; - qp_attr->rq_psn = qpcb->receive_psn; - qp_attr->sq_psn = qpcb->send_psn; - qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field; - qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1; - qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1; - /* UD_AV CIRCUMVENTION */ - if (my_qp->qp_type == IB_QPT_UD) { - qp_attr->cap.max_send_sge = - qpcb->actual_nr_sges_in_sq_wqe - 2; - qp_attr->cap.max_recv_sge = - qpcb->actual_nr_sges_in_rq_wqe - 2; - } else { - qp_attr->cap.max_send_sge = - qpcb->actual_nr_sges_in_sq_wqe; - qp_attr->cap.max_recv_sge = - qpcb->actual_nr_sges_in_rq_wqe; - } - - qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size; - qp_attr->dest_qp_num = qpcb->dest_qp_nr; - - qp_attr->pkey_index = qpcb->prim_p_key_idx; - qp_attr->port_num = qpcb->prim_phys_port; - qp_attr->timeout = qpcb->timeout; - qp_attr->retry_cnt = qpcb->retry_count; - qp_attr->rnr_retry = qpcb->rnr_retry_count; - - qp_attr->alt_pkey_index = qpcb->alt_p_key_idx; - qp_attr->alt_port_num = qpcb->alt_phys_port; - qp_attr->alt_timeout = qpcb->timeout_al; - - qp_attr->max_dest_rd_atomic = qpcb->rdma_nr_atomic_resp_res; - qp_attr->max_rd_atomic = qpcb->rdma_atomic_outst_dest_qp; - - /* primary av */ - qp_attr->ah_attr.sl = qpcb->service_level; - - if (qpcb->send_grh_flag) { - qp_attr->ah_attr.ah_flags = IB_AH_GRH; - } - - qp_attr->ah_attr.static_rate = qpcb->max_static_rate; - qp_attr->ah_attr.dlid = qpcb->dlid; - qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits; - qp_attr->ah_attr.port_num = qp_attr->port_num; - - /* primary GRH */ - qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class; - qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit; - qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx; - qp_attr->ah_attr.grh.flow_label = qpcb->flow_label; - - for (cnt = 0; cnt < 16; cnt++) - qp_attr->ah_attr.grh.dgid.raw[cnt] = - qpcb->dest_gid.byte[cnt]; - - /* alternate AV */ - qp_attr->alt_ah_attr.sl = qpcb->service_level_al; - if (qpcb->send_grh_flag_al) { - qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH; - } - - qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al; - qp_attr->alt_ah_attr.dlid = qpcb->dlid_al; - qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al; - - /* alternate GRH */ - qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al; - qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al; - qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al; - qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al; - - for (cnt = 0; cnt < 16; cnt++) - qp_attr->alt_ah_attr.grh.dgid.raw[cnt] = - qpcb->dest_gid_al.byte[cnt]; - - /* return init attributes given in ehca_create_qp */ - if (qp_init_attr) - *qp_init_attr = my_qp->init_attr; - - if (ehca_debug_level >= 2) - ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num); - -query_qp_exit1: - ehca_free_fw_ctrlblock(qpcb); - - return ret; -} - -int ehca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask, struct ib_udata *udata) -{ - struct ehca_qp *my_qp = - container_of(ibsrq, struct ehca_qp, ib_srq); - struct ehca_shca *shca = - container_of(ibsrq->pd->device, struct ehca_shca, ib_device); - struct hcp_modify_qp_control_block *mqpcb; - u64 update_mask; - u64 h_ret; - int ret = 0; - - mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!mqpcb) { - ehca_err(ibsrq->device, "Could not get zeroed page for mqpcb " - "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num); - return -ENOMEM; - } - - update_mask = 0; - if (attr_mask & IB_SRQ_LIMIT) { - attr_mask &= ~IB_SRQ_LIMIT; - update_mask |= - EHCA_BMASK_SET(MQPCB_MASK_CURR_SRQ_LIMIT, 1) - | EHCA_BMASK_SET(MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG, 1); - mqpcb->curr_srq_limit = attr->srq_limit; - mqpcb->qp_aff_asyn_ev_log_reg = - EHCA_BMASK_SET(QPX_AAELOG_RESET_SRQ_LIMIT, 1); - } - - /* by now, all bits in attr_mask should have been cleared */ - if (attr_mask) { - ehca_err(ibsrq->device, "invalid attribute mask bits set " - "attr_mask=%x", attr_mask); - ret = -EINVAL; - goto modify_srq_exit0; - } - - if (ehca_debug_level >= 2) - ehca_dmp(mqpcb, 4*70, "qp_num=%x", my_qp->real_qp_num); - - h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, my_qp->ipz_qp_handle, - NULL, update_mask, mqpcb, - my_qp->galpas.kernel); - - if (h_ret != H_SUCCESS) { - ret = ehca2ib_return_code(h_ret); - ehca_err(ibsrq->device, "hipz_h_modify_qp() failed h_ret=%lli " - "ehca_qp=%p qp_num=%x", - h_ret, my_qp, my_qp->real_qp_num); - } - -modify_srq_exit0: - ehca_free_fw_ctrlblock(mqpcb); - - return ret; -} - -int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr) -{ - struct ehca_qp *my_qp = container_of(srq, struct ehca_qp, ib_srq); - struct ehca_shca *shca = container_of(srq->device, struct ehca_shca, - ib_device); - struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle; - struct hcp_modify_qp_control_block *qpcb; - int ret = 0; - u64 h_ret; - - qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL); - if (!qpcb) { - ehca_err(srq->device, "Out of memory for qpcb " - "ehca_qp=%p qp_num=%x", my_qp, my_qp->real_qp_num); - return -ENOMEM; - } - - h_ret = hipz_h_query_qp(adapter_handle, my_qp->ipz_qp_handle, - NULL, qpcb, my_qp->galpas.kernel); - - if (h_ret != H_SUCCESS) { - ret = ehca2ib_return_code(h_ret); - ehca_err(srq->device, "hipz_h_query_qp() failed " - "ehca_qp=%p qp_num=%x h_ret=%lli", - my_qp, my_qp->real_qp_num, h_ret); - goto query_srq_exit1; - } - - srq_attr->max_wr = qpcb->max_nr_outst_recv_wr - 1; - srq_attr->max_sge = 3; - srq_attr->srq_limit = qpcb->curr_srq_limit; - - if (ehca_debug_level >= 2) - ehca_dmp(qpcb, 4*70, "qp_num=%x", my_qp->real_qp_num); - -query_srq_exit1: - ehca_free_fw_ctrlblock(qpcb); - - return ret; -} - -static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp, - struct ib_uobject *uobject) -{ - struct ehca_shca *shca = container_of(dev, struct ehca_shca, ib_device); - struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd, - ib_pd); - struct ehca_sport *sport = &shca->sport[my_qp->init_attr.port_num - 1]; - u32 qp_num = my_qp->real_qp_num; - int ret; - u64 h_ret; - u8 port_num; - int is_user = 0; - enum ib_qp_type qp_type; - unsigned long flags; - - if (uobject) { - is_user = 1; - if (my_qp->mm_count_galpa || - my_qp->mm_count_rqueue || my_qp->mm_count_squeue) { - ehca_err(dev, "Resources still referenced in " - "user space qp_num=%x", qp_num); - return -EINVAL; - } - } - - if (my_qp->send_cq) { - ret = ehca_cq_unassign_qp(my_qp->send_cq, qp_num); - if (ret) { - ehca_err(dev, "Couldn't unassign qp from " - "send_cq ret=%i qp_num=%x cq_num=%x", ret, - qp_num, my_qp->send_cq->cq_number); - return ret; - } - } - - write_lock_irqsave(&ehca_qp_idr_lock, flags); - idr_remove(&ehca_qp_idr, my_qp->token); - write_unlock_irqrestore(&ehca_qp_idr_lock, flags); - - /* - * SRQs will never get into an error list and do not have a recv_cq, - * so we need to skip them here. - */ - if (HAS_RQ(my_qp) && !IS_SRQ(my_qp) && !is_user) - del_from_err_list(my_qp->recv_cq, &my_qp->rq_err_node); - - if (HAS_SQ(my_qp) && !is_user) - del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node); - - /* now wait until all pending events have completed */ - wait_event(my_qp->wait_completion, !atomic_read(&my_qp->nr_events)); - - h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp); - if (h_ret != H_SUCCESS) { - ehca_err(dev, "hipz_h_destroy_qp() failed h_ret=%lli " - "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num); - return ehca2ib_return_code(h_ret); - } - - port_num = my_qp->init_attr.port_num; - qp_type = my_qp->init_attr.qp_type; - - if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) { - spin_lock_irqsave(&sport->mod_sqp_lock, flags); - kfree(my_qp->mod_qp_parm); - my_qp->mod_qp_parm = NULL; - shca->sport[port_num - 1].ibqp_sqp[qp_type] = NULL; - spin_unlock_irqrestore(&sport->mod_sqp_lock, flags); - } - - /* no support for IB_QPT_SMI yet */ - if (qp_type == IB_QPT_GSI) { - struct ib_event event; - ehca_info(dev, "device %s: port %x is inactive.", - shca->ib_device.name, port_num); - event.device = &shca->ib_device; - event.event = IB_EVENT_PORT_ERR; - event.element.port_num = port_num; - shca->sport[port_num - 1].port_state = IB_PORT_DOWN; - ib_dispatch_event(&event); - } - - if (HAS_RQ(my_qp)) { - ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue); - if (!is_user) - vfree(my_qp->rq_map.map); - } - if (HAS_SQ(my_qp)) { - ipz_queue_dtor(my_pd, &my_qp->ipz_squeue); - if (!is_user) - vfree(my_qp->sq_map.map); - } - kmem_cache_free(qp_cache, my_qp); - atomic_dec(&shca->num_qps); - return 0; -} - -int ehca_destroy_qp(struct ib_qp *qp) -{ - return internal_destroy_qp(qp->device, - container_of(qp, struct ehca_qp, ib_qp), - qp->uobject); -} - -int ehca_destroy_srq(struct ib_srq *srq) -{ - return internal_destroy_qp(srq->device, - container_of(srq, struct ehca_qp, ib_srq), - srq->uobject); -} - -int ehca_init_qp_cache(void) -{ - qp_cache = kmem_cache_create("ehca_cache_qp", - sizeof(struct ehca_qp), 0, - SLAB_HWCACHE_ALIGN, - NULL); - if (!qp_cache) - return -ENOMEM; - return 0; -} - -void ehca_cleanup_qp_cache(void) -{ - kmem_cache_destroy(qp_cache); -} diff --git a/drivers/staging/rdma/ehca/ehca_reqs.c b/drivers/staging/rdma/ehca/ehca_reqs.c deleted file mode 100644 index 11813b880e16..000000000000 --- a/drivers/staging/rdma/ehca/ehca_reqs.c +++ /dev/null @@ -1,953 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * post_send/recv, poll_cq, req_notify - * - * Authors: Hoang-Nam Nguyen - * Waleri Fomin - * Joachim Fenkes - * Reinhard Ernst - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - - -#include "ehca_classes.h" -#include "ehca_tools.h" -#include "ehca_qes.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" -#include "hipz_fns.h" - -/* in RC traffic, insert an empty RDMA READ every this many packets */ -#define ACK_CIRC_THRESHOLD 2000000 - -static u64 replace_wr_id(u64 wr_id, u16 idx) -{ - u64 ret; - - ret = wr_id & ~QMAP_IDX_MASK; - ret |= idx & QMAP_IDX_MASK; - - return ret; -} - -static u16 get_app_wr_id(u64 wr_id) -{ - return wr_id & QMAP_IDX_MASK; -} - -static inline int ehca_write_rwqe(struct ipz_queue *ipz_rqueue, - struct ehca_wqe *wqe_p, - struct ib_recv_wr *recv_wr, - u32 rq_map_idx) -{ - u8 cnt_ds; - if (unlikely((recv_wr->num_sge < 0) || - (recv_wr->num_sge > ipz_rqueue->act_nr_of_sg))) { - ehca_gen_err("Invalid number of WQE SGE. " - "num_sqe=%x max_nr_of_sg=%x", - recv_wr->num_sge, ipz_rqueue->act_nr_of_sg); - return -EINVAL; /* invalid SG list length */ - } - - /* clear wqe header until sglist */ - memset(wqe_p, 0, offsetof(struct ehca_wqe, u.ud_av.sg_list)); - - wqe_p->work_request_id = replace_wr_id(recv_wr->wr_id, rq_map_idx); - wqe_p->nr_of_data_seg = recv_wr->num_sge; - - for (cnt_ds = 0; cnt_ds < recv_wr->num_sge; cnt_ds++) { - wqe_p->u.all_rcv.sg_list[cnt_ds].vaddr = - recv_wr->sg_list[cnt_ds].addr; - wqe_p->u.all_rcv.sg_list[cnt_ds].lkey = - recv_wr->sg_list[cnt_ds].lkey; - wqe_p->u.all_rcv.sg_list[cnt_ds].length = - recv_wr->sg_list[cnt_ds].length; - } - - if (ehca_debug_level >= 3) { - ehca_gen_dbg("RECEIVE WQE written into ipz_rqueue=%p", - ipz_rqueue); - ehca_dmp(wqe_p, 16*(6 + wqe_p->nr_of_data_seg), "recv wqe"); - } - - return 0; -} - -#if defined(DEBUG_GSI_SEND_WR) - -/* need ib_mad struct */ -#include - -static void trace_ud_wr(const struct ib_ud_wr *ud_wr) -{ - int idx; - int j; - while (ud_wr) { - struct ib_mad_hdr *mad_hdr = ud_wrmad_hdr; - struct ib_sge *sge = ud_wr->wr.sg_list; - ehca_gen_dbg("ud_wr#%x wr_id=%lx num_sge=%x " - "send_flags=%x opcode=%x", idx, ud_wr->wr.wr_id, - ud_wr->wr.num_sge, ud_wr->wr.send_flags, - ud_wr->.wr.opcode); - if (mad_hdr) { - ehca_gen_dbg("ud_wr#%x mad_hdr base_version=%x " - "mgmt_class=%x class_version=%x method=%x " - "status=%x class_specific=%x tid=%lx " - "attr_id=%x resv=%x attr_mod=%x", - idx, mad_hdr->base_version, - mad_hdr->mgmt_class, - mad_hdr->class_version, mad_hdr->method, - mad_hdr->status, mad_hdr->class_specific, - mad_hdr->tid, mad_hdr->attr_id, - mad_hdr->resv, - mad_hdr->attr_mod); - } - for (j = 0; j < ud_wr->wr.num_sge; j++) { - u8 *data = __va(sge->addr); - ehca_gen_dbg("ud_wr#%x sge#%x addr=%p length=%x " - "lkey=%x", - idx, j, data, sge->length, sge->lkey); - /* assume length is n*16 */ - ehca_dmp(data, sge->length, "ud_wr#%x sge#%x", - idx, j); - sge++; - } /* eof for j */ - idx++; - ud_wr = ud_wr(ud_wr->wr.next); - } /* eof while ud_wr */ -} - -#endif /* DEBUG_GSI_SEND_WR */ - -static inline int ehca_write_swqe(struct ehca_qp *qp, - struct ehca_wqe *wqe_p, - struct ib_send_wr *send_wr, - u32 sq_map_idx, - int hidden) -{ - u32 idx; - u64 dma_length; - struct ehca_av *my_av; - u32 remote_qkey; - struct ehca_qmap_entry *qmap_entry = &qp->sq_map.map[sq_map_idx]; - - if (unlikely((send_wr->num_sge < 0) || - (send_wr->num_sge > qp->ipz_squeue.act_nr_of_sg))) { - ehca_gen_err("Invalid number of WQE SGE. " - "num_sqe=%x max_nr_of_sg=%x", - send_wr->num_sge, qp->ipz_squeue.act_nr_of_sg); - return -EINVAL; /* invalid SG list length */ - } - - /* clear wqe header until sglist */ - memset(wqe_p, 0, offsetof(struct ehca_wqe, u.ud_av.sg_list)); - - wqe_p->work_request_id = replace_wr_id(send_wr->wr_id, sq_map_idx); - - qmap_entry->app_wr_id = get_app_wr_id(send_wr->wr_id); - qmap_entry->reported = 0; - qmap_entry->cqe_req = 0; - - switch (send_wr->opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - wqe_p->optype = WQE_OPTYPE_SEND; - break; - case IB_WR_RDMA_WRITE: - case IB_WR_RDMA_WRITE_WITH_IMM: - wqe_p->optype = WQE_OPTYPE_RDMAWRITE; - break; - case IB_WR_RDMA_READ: - wqe_p->optype = WQE_OPTYPE_RDMAREAD; - break; - default: - ehca_gen_err("Invalid opcode=%x", send_wr->opcode); - return -EINVAL; /* invalid opcode */ - } - - wqe_p->wqef = (send_wr->opcode) & WQEF_HIGH_NIBBLE; - - wqe_p->wr_flag = 0; - - if ((send_wr->send_flags & IB_SEND_SIGNALED || - qp->init_attr.sq_sig_type == IB_SIGNAL_ALL_WR) - && !hidden) { - wqe_p->wr_flag |= WQE_WRFLAG_REQ_SIGNAL_COM; - qmap_entry->cqe_req = 1; - } - - if (send_wr->opcode == IB_WR_SEND_WITH_IMM || - send_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { - /* this might not work as long as HW does not support it */ - wqe_p->immediate_data = be32_to_cpu(send_wr->ex.imm_data); - wqe_p->wr_flag |= WQE_WRFLAG_IMM_DATA_PRESENT; - } - - wqe_p->nr_of_data_seg = send_wr->num_sge; - - switch (qp->qp_type) { - case IB_QPT_SMI: - case IB_QPT_GSI: - /* no break is intential here */ - case IB_QPT_UD: - /* IB 1.2 spec C10-15 compliance */ - remote_qkey = ud_wr(send_wr)->remote_qkey; - if (remote_qkey & 0x80000000) - remote_qkey = qp->qkey; - - wqe_p->destination_qp_number = ud_wr(send_wr)->remote_qpn << 8; - wqe_p->local_ee_context_qkey = remote_qkey; - if (unlikely(!ud_wr(send_wr)->ah)) { - ehca_gen_err("ud_wr(send_wr) is NULL. qp=%p", qp); - return -EINVAL; - } - if (unlikely(ud_wr(send_wr)->remote_qpn == 0)) { - ehca_gen_err("dest QP# is 0. qp=%x", qp->real_qp_num); - return -EINVAL; - } - my_av = container_of(ud_wr(send_wr)->ah, struct ehca_av, ib_ah); - wqe_p->u.ud_av.ud_av = my_av->av; - - /* - * omitted check of IB_SEND_INLINE - * since HW does not support it - */ - for (idx = 0; idx < send_wr->num_sge; idx++) { - wqe_p->u.ud_av.sg_list[idx].vaddr = - send_wr->sg_list[idx].addr; - wqe_p->u.ud_av.sg_list[idx].lkey = - send_wr->sg_list[idx].lkey; - wqe_p->u.ud_av.sg_list[idx].length = - send_wr->sg_list[idx].length; - } /* eof for idx */ - if (qp->qp_type == IB_QPT_SMI || - qp->qp_type == IB_QPT_GSI) - wqe_p->u.ud_av.ud_av.pmtu = 1; - if (qp->qp_type == IB_QPT_GSI) { - wqe_p->pkeyi = ud_wr(send_wr)->pkey_index; -#ifdef DEBUG_GSI_SEND_WR - trace_ud_wr(ud_wr(send_wr)); -#endif /* DEBUG_GSI_SEND_WR */ - } - break; - - case IB_QPT_UC: - if (send_wr->send_flags & IB_SEND_FENCE) - wqe_p->wr_flag |= WQE_WRFLAG_FENCE; - /* no break is intentional here */ - case IB_QPT_RC: - /* TODO: atomic not implemented */ - wqe_p->u.nud.remote_virtual_address = - rdma_wr(send_wr)->remote_addr; - wqe_p->u.nud.rkey = rdma_wr(send_wr)->rkey; - - /* - * omitted checking of IB_SEND_INLINE - * since HW does not support it - */ - dma_length = 0; - for (idx = 0; idx < send_wr->num_sge; idx++) { - wqe_p->u.nud.sg_list[idx].vaddr = - send_wr->sg_list[idx].addr; - wqe_p->u.nud.sg_list[idx].lkey = - send_wr->sg_list[idx].lkey; - wqe_p->u.nud.sg_list[idx].length = - send_wr->sg_list[idx].length; - dma_length += send_wr->sg_list[idx].length; - } /* eof idx */ - wqe_p->u.nud.atomic_1st_op_dma_len = dma_length; - - /* unsolicited ack circumvention */ - if (send_wr->opcode == IB_WR_RDMA_READ) { - /* on RDMA read, switch on and reset counters */ - qp->message_count = qp->packet_count = 0; - qp->unsol_ack_circ = 1; - } else - /* else estimate #packets */ - qp->packet_count += (dma_length >> qp->mtu_shift) + 1; - - break; - - default: - ehca_gen_err("Invalid qptype=%x", qp->qp_type); - return -EINVAL; - } - - if (ehca_debug_level >= 3) { - ehca_gen_dbg("SEND WQE written into queue qp=%p ", qp); - ehca_dmp( wqe_p, 16*(6 + wqe_p->nr_of_data_seg), "send wqe"); - } - return 0; -} - -/* map_ib_wc_status converts raw cqe_status to ib_wc_status */ -static inline void map_ib_wc_status(u32 cqe_status, - enum ib_wc_status *wc_status) -{ - if (unlikely(cqe_status & WC_STATUS_ERROR_BIT)) { - switch (cqe_status & 0x3F) { - case 0x01: - case 0x21: - *wc_status = IB_WC_LOC_LEN_ERR; - break; - case 0x02: - case 0x22: - *wc_status = IB_WC_LOC_QP_OP_ERR; - break; - case 0x03: - case 0x23: - *wc_status = IB_WC_LOC_EEC_OP_ERR; - break; - case 0x04: - case 0x24: - *wc_status = IB_WC_LOC_PROT_ERR; - break; - case 0x05: - case 0x25: - *wc_status = IB_WC_WR_FLUSH_ERR; - break; - case 0x06: - *wc_status = IB_WC_MW_BIND_ERR; - break; - case 0x07: /* remote error - look into bits 20:24 */ - switch ((cqe_status - & WC_STATUS_REMOTE_ERROR_FLAGS) >> 11) { - case 0x0: - /* - * PSN Sequence Error! - * couldn't find a matching status! - */ - *wc_status = IB_WC_GENERAL_ERR; - break; - case 0x1: - *wc_status = IB_WC_REM_INV_REQ_ERR; - break; - case 0x2: - *wc_status = IB_WC_REM_ACCESS_ERR; - break; - case 0x3: - *wc_status = IB_WC_REM_OP_ERR; - break; - case 0x4: - *wc_status = IB_WC_REM_INV_RD_REQ_ERR; - break; - } - break; - case 0x08: - *wc_status = IB_WC_RETRY_EXC_ERR; - break; - case 0x09: - *wc_status = IB_WC_RNR_RETRY_EXC_ERR; - break; - case 0x0A: - case 0x2D: - *wc_status = IB_WC_REM_ABORT_ERR; - break; - case 0x0B: - case 0x2E: - *wc_status = IB_WC_INV_EECN_ERR; - break; - case 0x0C: - case 0x2F: - *wc_status = IB_WC_INV_EEC_STATE_ERR; - break; - case 0x0D: - *wc_status = IB_WC_BAD_RESP_ERR; - break; - case 0x10: - /* WQE purged */ - *wc_status = IB_WC_WR_FLUSH_ERR; - break; - default: - *wc_status = IB_WC_FATAL_ERR; - - } - } else - *wc_status = IB_WC_SUCCESS; -} - -static inline int post_one_send(struct ehca_qp *my_qp, - struct ib_send_wr *cur_send_wr, - int hidden) -{ - struct ehca_wqe *wqe_p; - int ret; - u32 sq_map_idx; - u64 start_offset = my_qp->ipz_squeue.current_q_offset; - - /* get pointer next to free WQE */ - wqe_p = ipz_qeit_get_inc(&my_qp->ipz_squeue); - if (unlikely(!wqe_p)) { - /* too many posted work requests: queue overflow */ - ehca_err(my_qp->ib_qp.device, "Too many posted WQEs " - "qp_num=%x", my_qp->ib_qp.qp_num); - return -ENOMEM; - } - - /* - * Get the index of the WQE in the send queue. The same index is used - * for writing into the sq_map. - */ - sq_map_idx = start_offset / my_qp->ipz_squeue.qe_size; - - /* write a SEND WQE into the QUEUE */ - ret = ehca_write_swqe(my_qp, wqe_p, cur_send_wr, sq_map_idx, hidden); - /* - * if something failed, - * reset the free entry pointer to the start value - */ - if (unlikely(ret)) { - my_qp->ipz_squeue.current_q_offset = start_offset; - ehca_err(my_qp->ib_qp.device, "Could not write WQE " - "qp_num=%x", my_qp->ib_qp.qp_num); - return -EINVAL; - } - - return 0; -} - -int ehca_post_send(struct ib_qp *qp, - struct ib_send_wr *send_wr, - struct ib_send_wr **bad_send_wr) -{ - struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp); - int wqe_cnt = 0; - int ret = 0; - unsigned long flags; - - /* Reject WR if QP is in RESET, INIT or RTR state */ - if (unlikely(my_qp->state < IB_QPS_RTS)) { - ehca_err(qp->device, "Invalid QP state qp_state=%d qpn=%x", - my_qp->state, qp->qp_num); - ret = -EINVAL; - goto out; - } - - /* LOCK the QUEUE */ - spin_lock_irqsave(&my_qp->spinlock_s, flags); - - /* Send an empty extra RDMA read if: - * 1) there has been an RDMA read on this connection before - * 2) no RDMA read occurred for ACK_CIRC_THRESHOLD link packets - * 3) we can be sure that any previous extra RDMA read has been - * processed so we don't overflow the SQ - */ - if (unlikely(my_qp->unsol_ack_circ && - my_qp->packet_count > ACK_CIRC_THRESHOLD && - my_qp->message_count > my_qp->init_attr.cap.max_send_wr)) { - /* insert an empty RDMA READ to fix up the remote QP state */ - struct ib_send_wr circ_wr; - memset(&circ_wr, 0, sizeof(circ_wr)); - circ_wr.opcode = IB_WR_RDMA_READ; - post_one_send(my_qp, &circ_wr, 1); /* ignore retcode */ - wqe_cnt++; - ehca_dbg(qp->device, "posted circ wr qp_num=%x", qp->qp_num); - my_qp->message_count = my_qp->packet_count = 0; - } - - /* loop processes list of send reqs */ - while (send_wr) { - ret = post_one_send(my_qp, send_wr, 0); - if (unlikely(ret)) { - goto post_send_exit0; - } - wqe_cnt++; - send_wr = send_wr->next; - } - -post_send_exit0: - iosync(); /* serialize GAL register access */ - hipz_update_sqa(my_qp, wqe_cnt); - if (unlikely(ret || ehca_debug_level >= 2)) - ehca_dbg(qp->device, "ehca_qp=%p qp_num=%x wqe_cnt=%d ret=%i", - my_qp, qp->qp_num, wqe_cnt, ret); - my_qp->message_count += wqe_cnt; - spin_unlock_irqrestore(&my_qp->spinlock_s, flags); - -out: - if (ret) - *bad_send_wr = send_wr; - return ret; -} - -static int internal_post_recv(struct ehca_qp *my_qp, - struct ib_device *dev, - struct ib_recv_wr *recv_wr, - struct ib_recv_wr **bad_recv_wr) -{ - struct ehca_wqe *wqe_p; - int wqe_cnt = 0; - int ret = 0; - u32 rq_map_idx; - unsigned long flags; - struct ehca_qmap_entry *qmap_entry; - - if (unlikely(!HAS_RQ(my_qp))) { - ehca_err(dev, "QP has no RQ ehca_qp=%p qp_num=%x ext_type=%d", - my_qp, my_qp->real_qp_num, my_qp->ext_type); - ret = -ENODEV; - goto out; - } - - /* LOCK the QUEUE */ - spin_lock_irqsave(&my_qp->spinlock_r, flags); - - /* loop processes list of recv reqs */ - while (recv_wr) { - u64 start_offset = my_qp->ipz_rqueue.current_q_offset; - /* get pointer next to free WQE */ - wqe_p = ipz_qeit_get_inc(&my_qp->ipz_rqueue); - if (unlikely(!wqe_p)) { - /* too many posted work requests: queue overflow */ - ret = -ENOMEM; - ehca_err(dev, "Too many posted WQEs " - "qp_num=%x", my_qp->real_qp_num); - goto post_recv_exit0; - } - /* - * Get the index of the WQE in the recv queue. The same index - * is used for writing into the rq_map. - */ - rq_map_idx = start_offset / my_qp->ipz_rqueue.qe_size; - - /* write a RECV WQE into the QUEUE */ - ret = ehca_write_rwqe(&my_qp->ipz_rqueue, wqe_p, recv_wr, - rq_map_idx); - /* - * if something failed, - * reset the free entry pointer to the start value - */ - if (unlikely(ret)) { - my_qp->ipz_rqueue.current_q_offset = start_offset; - ret = -EINVAL; - ehca_err(dev, "Could not write WQE " - "qp_num=%x", my_qp->real_qp_num); - goto post_recv_exit0; - } - - qmap_entry = &my_qp->rq_map.map[rq_map_idx]; - qmap_entry->app_wr_id = get_app_wr_id(recv_wr->wr_id); - qmap_entry->reported = 0; - qmap_entry->cqe_req = 1; - - wqe_cnt++; - recv_wr = recv_wr->next; - } /* eof for recv_wr */ - -post_recv_exit0: - iosync(); /* serialize GAL register access */ - hipz_update_rqa(my_qp, wqe_cnt); - if (unlikely(ret || ehca_debug_level >= 2)) - ehca_dbg(dev, "ehca_qp=%p qp_num=%x wqe_cnt=%d ret=%i", - my_qp, my_qp->real_qp_num, wqe_cnt, ret); - spin_unlock_irqrestore(&my_qp->spinlock_r, flags); - -out: - if (ret) - *bad_recv_wr = recv_wr; - - return ret; -} - -int ehca_post_recv(struct ib_qp *qp, - struct ib_recv_wr *recv_wr, - struct ib_recv_wr **bad_recv_wr) -{ - struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp); - - /* Reject WR if QP is in RESET state */ - if (unlikely(my_qp->state == IB_QPS_RESET)) { - ehca_err(qp->device, "Invalid QP state qp_state=%d qpn=%x", - my_qp->state, qp->qp_num); - *bad_recv_wr = recv_wr; - return -EINVAL; - } - - return internal_post_recv(my_qp, qp->device, recv_wr, bad_recv_wr); -} - -int ehca_post_srq_recv(struct ib_srq *srq, - struct ib_recv_wr *recv_wr, - struct ib_recv_wr **bad_recv_wr) -{ - return internal_post_recv(container_of(srq, struct ehca_qp, ib_srq), - srq->device, recv_wr, bad_recv_wr); -} - -/* - * ib_wc_opcode table converts ehca wc opcode to ib - * Since we use zero to indicate invalid opcode, the actual ib opcode must - * be decremented!!! - */ -static const u8 ib_wc_opcode[255] = { - [0x01] = IB_WC_RECV+1, - [0x02] = IB_WC_RECV_RDMA_WITH_IMM+1, - [0x08] = IB_WC_FETCH_ADD+1, - [0x10] = IB_WC_COMP_SWAP+1, - [0x20] = IB_WC_RDMA_WRITE+1, - [0x40] = IB_WC_RDMA_READ+1, - [0x80] = IB_WC_SEND+1 -}; - -/* internal function to poll one entry of cq */ -static inline int ehca_poll_cq_one(struct ib_cq *cq, struct ib_wc *wc) -{ - int ret = 0, qmap_tail_idx; - struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq); - struct ehca_cqe *cqe; - struct ehca_qp *my_qp; - struct ehca_qmap_entry *qmap_entry; - struct ehca_queue_map *qmap; - int cqe_count = 0, is_error; - -repoll: - cqe = (struct ehca_cqe *) - ipz_qeit_get_inc_valid(&my_cq->ipz_queue); - if (!cqe) { - ret = -EAGAIN; - if (ehca_debug_level >= 3) - ehca_dbg(cq->device, "Completion queue is empty " - "my_cq=%p cq_num=%x", my_cq, my_cq->cq_number); - goto poll_cq_one_exit0; - } - - /* prevents loads being reordered across this point */ - rmb(); - - cqe_count++; - if (unlikely(cqe->status & WC_STATUS_PURGE_BIT)) { - struct ehca_qp *qp; - int purgeflag; - unsigned long flags; - - qp = ehca_cq_get_qp(my_cq, cqe->local_qp_number); - if (!qp) { - ehca_err(cq->device, "cq_num=%x qp_num=%x " - "could not find qp -> ignore cqe", - my_cq->cq_number, cqe->local_qp_number); - ehca_dmp(cqe, 64, "cq_num=%x qp_num=%x", - my_cq->cq_number, cqe->local_qp_number); - /* ignore this purged cqe */ - goto repoll; - } - spin_lock_irqsave(&qp->spinlock_s, flags); - purgeflag = qp->sqerr_purgeflag; - spin_unlock_irqrestore(&qp->spinlock_s, flags); - - if (purgeflag) { - ehca_dbg(cq->device, - "Got CQE with purged bit qp_num=%x src_qp=%x", - cqe->local_qp_number, cqe->remote_qp_number); - if (ehca_debug_level >= 2) - ehca_dmp(cqe, 64, "qp_num=%x src_qp=%x", - cqe->local_qp_number, - cqe->remote_qp_number); - /* - * ignore this to avoid double cqes of bad wqe - * that caused sqe and turn off purge flag - */ - qp->sqerr_purgeflag = 0; - goto repoll; - } - } - - is_error = cqe->status & WC_STATUS_ERROR_BIT; - - /* trace error CQEs if debug_level >= 1, trace all CQEs if >= 3 */ - if (unlikely(ehca_debug_level >= 3 || (ehca_debug_level && is_error))) { - ehca_dbg(cq->device, - "Received %sCOMPLETION ehca_cq=%p cq_num=%x -----", - is_error ? "ERROR " : "", my_cq, my_cq->cq_number); - ehca_dmp(cqe, 64, "ehca_cq=%p cq_num=%x", - my_cq, my_cq->cq_number); - ehca_dbg(cq->device, - "ehca_cq=%p cq_num=%x -------------------------", - my_cq, my_cq->cq_number); - } - - read_lock(&ehca_qp_idr_lock); - my_qp = idr_find(&ehca_qp_idr, cqe->qp_token); - read_unlock(&ehca_qp_idr_lock); - if (!my_qp) - goto repoll; - wc->qp = &my_qp->ib_qp; - - qmap_tail_idx = get_app_wr_id(cqe->work_request_id); - if (!(cqe->w_completion_flags & WC_SEND_RECEIVE_BIT)) - /* We got a send completion. */ - qmap = &my_qp->sq_map; - else - /* We got a receive completion. */ - qmap = &my_qp->rq_map; - - /* advance the tail pointer */ - qmap->tail = qmap_tail_idx; - - if (is_error) { - /* - * set left_to_poll to 0 because in error state, we will not - * get any additional CQEs - */ - my_qp->sq_map.next_wqe_idx = next_index(my_qp->sq_map.tail, - my_qp->sq_map.entries); - my_qp->sq_map.left_to_poll = 0; - ehca_add_to_err_list(my_qp, 1); - - my_qp->rq_map.next_wqe_idx = next_index(my_qp->rq_map.tail, - my_qp->rq_map.entries); - my_qp->rq_map.left_to_poll = 0; - if (HAS_RQ(my_qp)) - ehca_add_to_err_list(my_qp, 0); - } - - qmap_entry = &qmap->map[qmap_tail_idx]; - if (qmap_entry->reported) { - ehca_warn(cq->device, "Double cqe on qp_num=%#x", - my_qp->real_qp_num); - /* found a double cqe, discard it and read next one */ - goto repoll; - } - - wc->wr_id = replace_wr_id(cqe->work_request_id, qmap_entry->app_wr_id); - qmap_entry->reported = 1; - - /* if left_to_poll is decremented to 0, add the QP to the error list */ - if (qmap->left_to_poll > 0) { - qmap->left_to_poll--; - if ((my_qp->sq_map.left_to_poll == 0) && - (my_qp->rq_map.left_to_poll == 0)) { - ehca_add_to_err_list(my_qp, 1); - if (HAS_RQ(my_qp)) - ehca_add_to_err_list(my_qp, 0); - } - } - - /* eval ib_wc_opcode */ - wc->opcode = ib_wc_opcode[cqe->optype]-1; - if (unlikely(wc->opcode == -1)) { - ehca_err(cq->device, "Invalid cqe->OPType=%x cqe->status=%x " - "ehca_cq=%p cq_num=%x", - cqe->optype, cqe->status, my_cq, my_cq->cq_number); - /* dump cqe for other infos */ - ehca_dmp(cqe, 64, "ehca_cq=%p cq_num=%x", - my_cq, my_cq->cq_number); - /* update also queue adder to throw away this entry!!! */ - goto repoll; - } - - /* eval ib_wc_status */ - if (unlikely(is_error)) { - /* complete with errors */ - map_ib_wc_status(cqe->status, &wc->status); - wc->vendor_err = wc->status; - } else - wc->status = IB_WC_SUCCESS; - - wc->byte_len = cqe->nr_bytes_transferred; - wc->pkey_index = cqe->pkey_index; - wc->slid = cqe->rlid; - wc->dlid_path_bits = cqe->dlid; - wc->src_qp = cqe->remote_qp_number; - /* - * HW has "Immed data present" and "GRH present" in bits 6 and 5. - * SW defines those in bits 1 and 0, so we can just shift and mask. - */ - wc->wc_flags = (cqe->w_completion_flags >> 5) & 3; - wc->ex.imm_data = cpu_to_be32(cqe->immediate_data); - wc->sl = cqe->service_level; - -poll_cq_one_exit0: - if (cqe_count > 0) - hipz_update_feca(my_cq, cqe_count); - - return ret; -} - -static int generate_flush_cqes(struct ehca_qp *my_qp, struct ib_cq *cq, - struct ib_wc *wc, int num_entries, - struct ipz_queue *ipz_queue, int on_sq) -{ - int nr = 0; - struct ehca_wqe *wqe; - u64 offset; - struct ehca_queue_map *qmap; - struct ehca_qmap_entry *qmap_entry; - - if (on_sq) - qmap = &my_qp->sq_map; - else - qmap = &my_qp->rq_map; - - qmap_entry = &qmap->map[qmap->next_wqe_idx]; - - while ((nr < num_entries) && (qmap_entry->reported == 0)) { - /* generate flush CQE */ - - memset(wc, 0, sizeof(*wc)); - - offset = qmap->next_wqe_idx * ipz_queue->qe_size; - wqe = (struct ehca_wqe *)ipz_qeit_calc(ipz_queue, offset); - if (!wqe) { - ehca_err(cq->device, "Invalid wqe offset=%#llx on " - "qp_num=%#x", offset, my_qp->real_qp_num); - return nr; - } - - wc->wr_id = replace_wr_id(wqe->work_request_id, - qmap_entry->app_wr_id); - - if (on_sq) { - switch (wqe->optype) { - case WQE_OPTYPE_SEND: - wc->opcode = IB_WC_SEND; - break; - case WQE_OPTYPE_RDMAWRITE: - wc->opcode = IB_WC_RDMA_WRITE; - break; - case WQE_OPTYPE_RDMAREAD: - wc->opcode = IB_WC_RDMA_READ; - break; - default: - ehca_err(cq->device, "Invalid optype=%x", - wqe->optype); - return nr; - } - } else - wc->opcode = IB_WC_RECV; - - if (wqe->wr_flag & WQE_WRFLAG_IMM_DATA_PRESENT) { - wc->ex.imm_data = wqe->immediate_data; - wc->wc_flags |= IB_WC_WITH_IMM; - } - - wc->status = IB_WC_WR_FLUSH_ERR; - - wc->qp = &my_qp->ib_qp; - - /* mark as reported and advance next_wqe pointer */ - qmap_entry->reported = 1; - qmap->next_wqe_idx = next_index(qmap->next_wqe_idx, - qmap->entries); - qmap_entry = &qmap->map[qmap->next_wqe_idx]; - - wc++; nr++; - } - - return nr; - -} - -int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc) -{ - struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq); - int nr; - struct ehca_qp *err_qp; - struct ib_wc *current_wc = wc; - int ret = 0; - unsigned long flags; - int entries_left = num_entries; - - if (num_entries < 1) { - ehca_err(cq->device, "Invalid num_entries=%d ehca_cq=%p " - "cq_num=%x", num_entries, my_cq, my_cq->cq_number); - ret = -EINVAL; - goto poll_cq_exit0; - } - - spin_lock_irqsave(&my_cq->spinlock, flags); - - /* generate flush cqes for send queues */ - list_for_each_entry(err_qp, &my_cq->sqp_err_list, sq_err_node) { - nr = generate_flush_cqes(err_qp, cq, current_wc, entries_left, - &err_qp->ipz_squeue, 1); - entries_left -= nr; - current_wc += nr; - - if (entries_left == 0) - break; - } - - /* generate flush cqes for receive queues */ - list_for_each_entry(err_qp, &my_cq->rqp_err_list, rq_err_node) { - nr = generate_flush_cqes(err_qp, cq, current_wc, entries_left, - &err_qp->ipz_rqueue, 0); - entries_left -= nr; - current_wc += nr; - - if (entries_left == 0) - break; - } - - for (nr = 0; nr < entries_left; nr++) { - ret = ehca_poll_cq_one(cq, current_wc); - if (ret) - break; - current_wc++; - } /* eof for nr */ - entries_left -= nr; - - spin_unlock_irqrestore(&my_cq->spinlock, flags); - if (ret == -EAGAIN || !ret) - ret = num_entries - entries_left; - -poll_cq_exit0: - return ret; -} - -int ehca_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags notify_flags) -{ - struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq); - int ret = 0; - - switch (notify_flags & IB_CQ_SOLICITED_MASK) { - case IB_CQ_SOLICITED: - hipz_set_cqx_n0(my_cq, 1); - break; - case IB_CQ_NEXT_COMP: - hipz_set_cqx_n1(my_cq, 1); - break; - default: - return -EINVAL; - } - - if (notify_flags & IB_CQ_REPORT_MISSED_EVENTS) { - unsigned long spl_flags; - spin_lock_irqsave(&my_cq->spinlock, spl_flags); - ret = ipz_qeit_is_valid(&my_cq->ipz_queue); - spin_unlock_irqrestore(&my_cq->spinlock, spl_flags); - } - - return ret; -} diff --git a/drivers/staging/rdma/ehca/ehca_sqp.c b/drivers/staging/rdma/ehca/ehca_sqp.c deleted file mode 100644 index 376b031c2c7f..000000000000 --- a/drivers/staging/rdma/ehca/ehca_sqp.c +++ /dev/null @@ -1,245 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * SQP functions - * - * Authors: Khadija Souissi - * Heiko J Schick - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_classes.h" -#include "ehca_tools.h" -#include "ehca_iverbs.h" -#include "hcp_if.h" - -#define IB_MAD_STATUS_REDIRECT cpu_to_be16(0x0002) -#define IB_MAD_STATUS_UNSUP_VERSION cpu_to_be16(0x0004) -#define IB_MAD_STATUS_UNSUP_METHOD cpu_to_be16(0x0008) - -#define IB_PMA_CLASS_PORT_INFO cpu_to_be16(0x0001) - -/** - * ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue - * pair is created successfully, the corresponding port gets active. - * - * Define Special Queue pair 0 (SMI QP) is still not supported. - * - * @qp_init_attr: Queue pair init attributes with port and queue pair type - */ - -u64 ehca_define_sqp(struct ehca_shca *shca, - struct ehca_qp *ehca_qp, - struct ib_qp_init_attr *qp_init_attr) -{ - u32 pma_qp_nr, bma_qp_nr; - u64 ret; - u8 port = qp_init_attr->port_num; - int counter; - - shca->sport[port - 1].port_state = IB_PORT_DOWN; - - switch (qp_init_attr->qp_type) { - case IB_QPT_SMI: - /* function not supported yet */ - break; - case IB_QPT_GSI: - ret = hipz_h_define_aqp1(shca->ipz_hca_handle, - ehca_qp->ipz_qp_handle, - ehca_qp->galpas.kernel, - (u32) qp_init_attr->port_num, - &pma_qp_nr, &bma_qp_nr); - - if (ret != H_SUCCESS) { - ehca_err(&shca->ib_device, - "Can't define AQP1 for port %x. h_ret=%lli", - port, ret); - return ret; - } - shca->sport[port - 1].pma_qp_nr = pma_qp_nr; - ehca_dbg(&shca->ib_device, "port=%x pma_qp_nr=%x", - port, pma_qp_nr); - break; - default: - ehca_err(&shca->ib_device, "invalid qp_type=%x", - qp_init_attr->qp_type); - return H_PARAMETER; - } - - if (ehca_nr_ports < 0) /* autodetect mode */ - return H_SUCCESS; - - for (counter = 0; - shca->sport[port - 1].port_state != IB_PORT_ACTIVE && - counter < ehca_port_act_time; - counter++) { - ehca_dbg(&shca->ib_device, "... wait until port %x is active", - port); - msleep_interruptible(1000); - } - - if (counter == ehca_port_act_time) { - ehca_err(&shca->ib_device, "Port %x is not active.", port); - return H_HARDWARE; - } - - return H_SUCCESS; -} - -struct ib_perf { - struct ib_mad_hdr mad_hdr; - u8 reserved[40]; - u8 data[192]; -} __attribute__ ((packed)); - -/* TC/SL/FL packed into 32 bits, as in ClassPortInfo */ -struct tcslfl { - u32 tc:8; - u32 sl:4; - u32 fl:20; -} __attribute__ ((packed)); - -/* IP Version/TC/FL packed into 32 bits, as in GRH */ -struct vertcfl { - u32 ver:4; - u32 tc:8; - u32 fl:20; -} __attribute__ ((packed)); - -static int ehca_process_perf(struct ib_device *ibdev, u8 port_num, - const struct ib_wc *in_wc, const struct ib_grh *in_grh, - const struct ib_mad *in_mad, struct ib_mad *out_mad) -{ - const struct ib_perf *in_perf = (const struct ib_perf *)in_mad; - struct ib_perf *out_perf = (struct ib_perf *)out_mad; - struct ib_class_port_info *poi = - (struct ib_class_port_info *)out_perf->data; - struct tcslfl *tcslfl = - (struct tcslfl *)&poi->redirect_tcslfl; - struct ehca_shca *shca = - container_of(ibdev, struct ehca_shca, ib_device); - struct ehca_sport *sport = &shca->sport[port_num - 1]; - - ehca_dbg(ibdev, "method=%x", in_perf->mad_hdr.method); - - *out_mad = *in_mad; - - if (in_perf->mad_hdr.class_version != 1) { - ehca_warn(ibdev, "Unsupported class_version=%x", - in_perf->mad_hdr.class_version); - out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_VERSION; - goto perf_reply; - } - - switch (in_perf->mad_hdr.method) { - case IB_MGMT_METHOD_GET: - case IB_MGMT_METHOD_SET: - /* set class port info for redirection */ - out_perf->mad_hdr.attr_id = IB_PMA_CLASS_PORT_INFO; - out_perf->mad_hdr.status = IB_MAD_STATUS_REDIRECT; - memset(poi, 0, sizeof(*poi)); - poi->base_version = 1; - poi->class_version = 1; - poi->resp_time_value = 18; - - /* copy local routing information from WC where applicable */ - tcslfl->sl = in_wc->sl; - poi->redirect_lid = - sport->saved_attr.lid | in_wc->dlid_path_bits; - poi->redirect_qp = sport->pma_qp_nr; - poi->redirect_qkey = IB_QP1_QKEY; - - ehca_query_pkey(ibdev, port_num, in_wc->pkey_index, - &poi->redirect_pkey); - - /* if request was globally routed, copy route info */ - if (in_grh) { - const struct vertcfl *vertcfl = - (const struct vertcfl *)&in_grh->version_tclass_flow; - memcpy(poi->redirect_gid, in_grh->dgid.raw, - sizeof(poi->redirect_gid)); - tcslfl->tc = vertcfl->tc; - tcslfl->fl = vertcfl->fl; - } else - /* else only fill in default GID */ - ehca_query_gid(ibdev, port_num, 0, - (union ib_gid *)&poi->redirect_gid); - - ehca_dbg(ibdev, "ehca_pma_lid=%x ehca_pma_qp=%x", - sport->saved_attr.lid, sport->pma_qp_nr); - break; - - case IB_MGMT_METHOD_GET_RESP: - return IB_MAD_RESULT_FAILURE; - - default: - out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_METHOD; - break; - } - -perf_reply: - out_perf->mad_hdr.method = IB_MGMT_METHOD_GET_RESP; - - return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; -} - -int ehca_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, - const struct ib_wc *in_wc, const struct ib_grh *in_grh, - const struct ib_mad_hdr *in, size_t in_mad_size, - struct ib_mad_hdr *out, size_t *out_mad_size, - u16 *out_mad_pkey_index) -{ - int ret; - const struct ib_mad *in_mad = (const struct ib_mad *)in; - struct ib_mad *out_mad = (struct ib_mad *)out; - - if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || - *out_mad_size != sizeof(*out_mad))) - return IB_MAD_RESULT_FAILURE; - - if (!port_num || port_num > ibdev->phys_port_cnt || !in_wc) - return IB_MAD_RESULT_FAILURE; - - /* accept only pma request */ - if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT) - return IB_MAD_RESULT_SUCCESS; - - ehca_dbg(ibdev, "port_num=%x src_qp=%x", port_num, in_wc->src_qp); - ret = ehca_process_perf(ibdev, port_num, in_wc, in_grh, - in_mad, out_mad); - - return ret; -} diff --git a/drivers/staging/rdma/ehca/ehca_tools.h b/drivers/staging/rdma/ehca/ehca_tools.h deleted file mode 100644 index d280b12aae64..000000000000 --- a/drivers/staging/rdma/ehca/ehca_tools.h +++ /dev/null @@ -1,155 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * auxiliary functions - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * Khadija Souissi - * Waleri Fomin - * Heiko J Schick - * - * Copyright (c) 2005 IBM Corporation - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - - -#ifndef EHCA_TOOLS_H -#define EHCA_TOOLS_H - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -extern int ehca_debug_level; - -#define ehca_dbg(ib_dev, format, arg...) \ - do { \ - if (unlikely(ehca_debug_level)) \ - dev_printk(KERN_DEBUG, (ib_dev)->dma_device, \ - "PU%04x EHCA_DBG:%s " format "\n", \ - raw_smp_processor_id(), __func__, \ - ## arg); \ - } while (0) - -#define ehca_info(ib_dev, format, arg...) \ - dev_info((ib_dev)->dma_device, "PU%04x EHCA_INFO:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg) - -#define ehca_warn(ib_dev, format, arg...) \ - dev_warn((ib_dev)->dma_device, "PU%04x EHCA_WARN:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg) - -#define ehca_err(ib_dev, format, arg...) \ - dev_err((ib_dev)->dma_device, "PU%04x EHCA_ERR:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg) - -/* use this one only if no ib_dev available */ -#define ehca_gen_dbg(format, arg...) \ - do { \ - if (unlikely(ehca_debug_level)) \ - printk(KERN_DEBUG "PU%04x EHCA_DBG:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg); \ - } while (0) - -#define ehca_gen_warn(format, arg...) \ - printk(KERN_INFO "PU%04x EHCA_WARN:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg) - -#define ehca_gen_err(format, arg...) \ - printk(KERN_ERR "PU%04x EHCA_ERR:%s " format "\n", \ - raw_smp_processor_id(), __func__, ## arg) - -/** - * ehca_dmp - printk a memory block, whose length is n*8 bytes. - * Each line has the following layout: - * adr=X ofs=Y <8 bytes hex> <8 bytes hex> - */ -#define ehca_dmp(adr, len, format, args...) \ - do { \ - unsigned int x; \ - unsigned int l = (unsigned int)(len); \ - unsigned char *deb = (unsigned char *)(adr); \ - for (x = 0; x < l; x += 16) { \ - printk(KERN_INFO "EHCA_DMP:%s " format \ - " adr=%p ofs=%04x %016llx %016llx\n", \ - __func__, ##args, deb, x, \ - *((u64 *)&deb[0]), *((u64 *)&deb[8])); \ - deb += 16; \ - } \ - } while (0) - -/* define a bitmask, little endian version */ -#define EHCA_BMASK(pos, length) (((pos) << 16) + (length)) - -/* define a bitmask, the ibm way... */ -#define EHCA_BMASK_IBM(from, to) (((63 - to) << 16) + ((to) - (from) + 1)) - -/* internal function, don't use */ -#define EHCA_BMASK_SHIFTPOS(mask) (((mask) >> 16) & 0xffff) - -/* internal function, don't use */ -#define EHCA_BMASK_MASK(mask) (~0ULL >> ((64 - (mask)) & 0xffff)) - -/** - * EHCA_BMASK_SET - return value shifted and masked by mask - * variable|=EHCA_BMASK_SET(MY_MASK,0x4711) ORs the bits in variable - * variable&=~EHCA_BMASK_SET(MY_MASK,-1) clears the bits from the mask - * in variable - */ -#define EHCA_BMASK_SET(mask, value) \ - ((EHCA_BMASK_MASK(mask) & ((u64)(value))) << EHCA_BMASK_SHIFTPOS(mask)) - -/** - * EHCA_BMASK_GET - extract a parameter from value by mask - */ -#define EHCA_BMASK_GET(mask, value) \ - (EHCA_BMASK_MASK(mask) & (((u64)(value)) >> EHCA_BMASK_SHIFTPOS(mask))) - -/* Converts ehca to ib return code */ -int ehca2ib_return_code(u64 ehca_rc); - -#endif /* EHCA_TOOLS_H */ diff --git a/drivers/staging/rdma/ehca/ehca_uverbs.c b/drivers/staging/rdma/ehca/ehca_uverbs.c deleted file mode 100644 index 1a1d5d99fcf9..000000000000 --- a/drivers/staging/rdma/ehca/ehca_uverbs.c +++ /dev/null @@ -1,309 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * userspace support verbs - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * Heiko J Schick - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_classes.h" -#include "ehca_iverbs.h" -#include "ehca_mrmw.h" -#include "ehca_tools.h" -#include "hcp_if.h" - -struct ib_ucontext *ehca_alloc_ucontext(struct ib_device *device, - struct ib_udata *udata) -{ - struct ehca_ucontext *my_context; - - my_context = kzalloc(sizeof *my_context, GFP_KERNEL); - if (!my_context) { - ehca_err(device, "Out of memory device=%p", device); - return ERR_PTR(-ENOMEM); - } - - return &my_context->ib_ucontext; -} - -int ehca_dealloc_ucontext(struct ib_ucontext *context) -{ - kfree(container_of(context, struct ehca_ucontext, ib_ucontext)); - return 0; -} - -static void ehca_mm_open(struct vm_area_struct *vma) -{ - u32 *count = (u32 *)vma->vm_private_data; - if (!count) { - ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx", - vma->vm_start, vma->vm_end); - return; - } - (*count)++; - if (!(*count)) - ehca_gen_err("Use count overflow vm_start=%lx vm_end=%lx", - vma->vm_start, vma->vm_end); - ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x", - vma->vm_start, vma->vm_end, *count); -} - -static void ehca_mm_close(struct vm_area_struct *vma) -{ - u32 *count = (u32 *)vma->vm_private_data; - if (!count) { - ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx", - vma->vm_start, vma->vm_end); - return; - } - (*count)--; - ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x", - vma->vm_start, vma->vm_end, *count); -} - -static const struct vm_operations_struct vm_ops = { - .open = ehca_mm_open, - .close = ehca_mm_close, -}; - -static int ehca_mmap_fw(struct vm_area_struct *vma, struct h_galpas *galpas, - u32 *mm_count) -{ - int ret; - u64 vsize, physical; - - vsize = vma->vm_end - vma->vm_start; - if (vsize < EHCA_PAGESIZE) { - ehca_gen_err("invalid vsize=%lx", vma->vm_end - vma->vm_start); - return -EINVAL; - } - - physical = galpas->user.fw_handle; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - ehca_gen_dbg("vsize=%llx physical=%llx", vsize, physical); - /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */ - ret = remap_4k_pfn(vma, vma->vm_start, physical >> EHCA_PAGESHIFT, - vma->vm_page_prot); - if (unlikely(ret)) { - ehca_gen_err("remap_pfn_range() failed ret=%i", ret); - return -ENOMEM; - } - - vma->vm_private_data = mm_count; - (*mm_count)++; - vma->vm_ops = &vm_ops; - - return 0; -} - -static int ehca_mmap_queue(struct vm_area_struct *vma, struct ipz_queue *queue, - u32 *mm_count) -{ - int ret; - u64 start, ofs; - struct page *page; - - vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; - start = vma->vm_start; - for (ofs = 0; ofs < queue->queue_length; ofs += PAGE_SIZE) { - u64 virt_addr = (u64)ipz_qeit_calc(queue, ofs); - page = virt_to_page(virt_addr); - ret = vm_insert_page(vma, start, page); - if (unlikely(ret)) { - ehca_gen_err("vm_insert_page() failed rc=%i", ret); - return ret; - } - start += PAGE_SIZE; - } - vma->vm_private_data = mm_count; - (*mm_count)++; - vma->vm_ops = &vm_ops; - - return 0; -} - -static int ehca_mmap_cq(struct vm_area_struct *vma, struct ehca_cq *cq, - u32 rsrc_type) -{ - int ret; - - switch (rsrc_type) { - case 0: /* galpa fw handle */ - ehca_dbg(cq->ib_cq.device, "cq_num=%x fw", cq->cq_number); - ret = ehca_mmap_fw(vma, &cq->galpas, &cq->mm_count_galpa); - if (unlikely(ret)) { - ehca_err(cq->ib_cq.device, - "ehca_mmap_fw() failed rc=%i cq_num=%x", - ret, cq->cq_number); - return ret; - } - break; - - case 1: /* cq queue_addr */ - ehca_dbg(cq->ib_cq.device, "cq_num=%x queue", cq->cq_number); - ret = ehca_mmap_queue(vma, &cq->ipz_queue, &cq->mm_count_queue); - if (unlikely(ret)) { - ehca_err(cq->ib_cq.device, - "ehca_mmap_queue() failed rc=%i cq_num=%x", - ret, cq->cq_number); - return ret; - } - break; - - default: - ehca_err(cq->ib_cq.device, "bad resource type=%x cq_num=%x", - rsrc_type, cq->cq_number); - return -EINVAL; - } - - return 0; -} - -static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp, - u32 rsrc_type) -{ - int ret; - - switch (rsrc_type) { - case 0: /* galpa fw handle */ - ehca_dbg(qp->ib_qp.device, "qp_num=%x fw", qp->ib_qp.qp_num); - ret = ehca_mmap_fw(vma, &qp->galpas, &qp->mm_count_galpa); - if (unlikely(ret)) { - ehca_err(qp->ib_qp.device, - "remap_pfn_range() failed ret=%i qp_num=%x", - ret, qp->ib_qp.qp_num); - return -ENOMEM; - } - break; - - case 1: /* qp rqueue_addr */ - ehca_dbg(qp->ib_qp.device, "qp_num=%x rq", qp->ib_qp.qp_num); - ret = ehca_mmap_queue(vma, &qp->ipz_rqueue, - &qp->mm_count_rqueue); - if (unlikely(ret)) { - ehca_err(qp->ib_qp.device, - "ehca_mmap_queue(rq) failed rc=%i qp_num=%x", - ret, qp->ib_qp.qp_num); - return ret; - } - break; - - case 2: /* qp squeue_addr */ - ehca_dbg(qp->ib_qp.device, "qp_num=%x sq", qp->ib_qp.qp_num); - ret = ehca_mmap_queue(vma, &qp->ipz_squeue, - &qp->mm_count_squeue); - if (unlikely(ret)) { - ehca_err(qp->ib_qp.device, - "ehca_mmap_queue(sq) failed rc=%i qp_num=%x", - ret, qp->ib_qp.qp_num); - return ret; - } - break; - - default: - ehca_err(qp->ib_qp.device, "bad resource type=%x qp=num=%x", - rsrc_type, qp->ib_qp.qp_num); - return -EINVAL; - } - - return 0; -} - -int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) -{ - u64 fileoffset = vma->vm_pgoff; - u32 idr_handle = fileoffset & 0x1FFFFFF; - u32 q_type = (fileoffset >> 27) & 0x1; /* CQ, QP,... */ - u32 rsrc_type = (fileoffset >> 25) & 0x3; /* sq,rq,cmnd_window */ - u32 ret; - struct ehca_cq *cq; - struct ehca_qp *qp; - struct ib_uobject *uobject; - - switch (q_type) { - case 0: /* CQ */ - read_lock(&ehca_cq_idr_lock); - cq = idr_find(&ehca_cq_idr, idr_handle); - read_unlock(&ehca_cq_idr_lock); - - /* make sure this mmap really belongs to the authorized user */ - if (!cq) - return -EINVAL; - - if (!cq->ib_cq.uobject || cq->ib_cq.uobject->context != context) - return -EINVAL; - - ret = ehca_mmap_cq(vma, cq, rsrc_type); - if (unlikely(ret)) { - ehca_err(cq->ib_cq.device, - "ehca_mmap_cq() failed rc=%i cq_num=%x", - ret, cq->cq_number); - return ret; - } - break; - - case 1: /* QP */ - read_lock(&ehca_qp_idr_lock); - qp = idr_find(&ehca_qp_idr, idr_handle); - read_unlock(&ehca_qp_idr_lock); - - /* make sure this mmap really belongs to the authorized user */ - if (!qp) - return -EINVAL; - - uobject = IS_SRQ(qp) ? qp->ib_srq.uobject : qp->ib_qp.uobject; - if (!uobject || uobject->context != context) - return -EINVAL; - - ret = ehca_mmap_qp(vma, qp, rsrc_type); - if (unlikely(ret)) { - ehca_err(qp->ib_qp.device, - "ehca_mmap_qp() failed rc=%i qp_num=%x", - ret, qp->ib_qp.qp_num); - return ret; - } - break; - - default: - ehca_gen_err("bad queue type %x", q_type); - return -EINVAL; - } - - return 0; -} diff --git a/drivers/staging/rdma/ehca/hcp_if.c b/drivers/staging/rdma/ehca/hcp_if.c deleted file mode 100644 index 89517ffb4389..000000000000 --- a/drivers/staging/rdma/ehca/hcp_if.c +++ /dev/null @@ -1,949 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Firmware Infiniband Interface code for POWER - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * Joachim Fenkes - * Gerd Bayer - * Waleri Fomin - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include "ehca_tools.h" -#include "hcp_if.h" -#include "hcp_phyp.h" -#include "hipz_fns.h" -#include "ipz_pt_fn.h" - -#define H_ALL_RES_QP_ENHANCED_OPS EHCA_BMASK_IBM(9, 11) -#define H_ALL_RES_QP_PTE_PIN EHCA_BMASK_IBM(12, 12) -#define H_ALL_RES_QP_SERVICE_TYPE EHCA_BMASK_IBM(13, 15) -#define H_ALL_RES_QP_STORAGE EHCA_BMASK_IBM(16, 17) -#define H_ALL_RES_QP_LL_RQ_CQE_POSTING EHCA_BMASK_IBM(18, 18) -#define H_ALL_RES_QP_LL_SQ_CQE_POSTING EHCA_BMASK_IBM(19, 21) -#define H_ALL_RES_QP_SIGNALING_TYPE EHCA_BMASK_IBM(22, 23) -#define H_ALL_RES_QP_UD_AV_LKEY_CTRL EHCA_BMASK_IBM(31, 31) -#define H_ALL_RES_QP_SMALL_SQ_PAGE_SIZE EHCA_BMASK_IBM(32, 35) -#define H_ALL_RES_QP_SMALL_RQ_PAGE_SIZE EHCA_BMASK_IBM(36, 39) -#define H_ALL_RES_QP_RESOURCE_TYPE EHCA_BMASK_IBM(56, 63) - -#define H_ALL_RES_QP_MAX_OUTST_SEND_WR EHCA_BMASK_IBM(0, 15) -#define H_ALL_RES_QP_MAX_OUTST_RECV_WR EHCA_BMASK_IBM(16, 31) -#define H_ALL_RES_QP_MAX_SEND_SGE EHCA_BMASK_IBM(32, 39) -#define H_ALL_RES_QP_MAX_RECV_SGE EHCA_BMASK_IBM(40, 47) - -#define H_ALL_RES_QP_UD_AV_LKEY EHCA_BMASK_IBM(32, 63) -#define H_ALL_RES_QP_SRQ_QP_TOKEN EHCA_BMASK_IBM(0, 31) -#define H_ALL_RES_QP_SRQ_QP_HANDLE EHCA_BMASK_IBM(0, 64) -#define H_ALL_RES_QP_SRQ_LIMIT EHCA_BMASK_IBM(48, 63) -#define H_ALL_RES_QP_SRQ_QPN EHCA_BMASK_IBM(40, 63) - -#define H_ALL_RES_QP_ACT_OUTST_SEND_WR EHCA_BMASK_IBM(16, 31) -#define H_ALL_RES_QP_ACT_OUTST_RECV_WR EHCA_BMASK_IBM(48, 63) -#define H_ALL_RES_QP_ACT_SEND_SGE EHCA_BMASK_IBM(8, 15) -#define H_ALL_RES_QP_ACT_RECV_SGE EHCA_BMASK_IBM(24, 31) - -#define H_ALL_RES_QP_SQUEUE_SIZE_PAGES EHCA_BMASK_IBM(0, 31) -#define H_ALL_RES_QP_RQUEUE_SIZE_PAGES EHCA_BMASK_IBM(32, 63) - -#define H_MP_INIT_TYPE EHCA_BMASK_IBM(44, 47) -#define H_MP_SHUTDOWN EHCA_BMASK_IBM(48, 48) -#define H_MP_RESET_QKEY_CTR EHCA_BMASK_IBM(49, 49) - -#define HCALL4_REGS_FORMAT "r4=%lx r5=%lx r6=%lx r7=%lx" -#define HCALL7_REGS_FORMAT HCALL4_REGS_FORMAT " r8=%lx r9=%lx r10=%lx" -#define HCALL9_REGS_FORMAT HCALL7_REGS_FORMAT " r11=%lx r12=%lx" - -static DEFINE_SPINLOCK(hcall_lock); - -static long ehca_plpar_hcall_norets(unsigned long opcode, - unsigned long arg1, - unsigned long arg2, - unsigned long arg3, - unsigned long arg4, - unsigned long arg5, - unsigned long arg6, - unsigned long arg7) -{ - long ret; - int i, sleep_msecs; - unsigned long flags = 0; - - if (unlikely(ehca_debug_level >= 2)) - ehca_gen_dbg("opcode=%lx " HCALL7_REGS_FORMAT, - opcode, arg1, arg2, arg3, arg4, arg5, arg6, arg7); - - for (i = 0; i < 5; i++) { - /* serialize hCalls to work around firmware issue */ - if (ehca_lock_hcalls) - spin_lock_irqsave(&hcall_lock, flags); - - ret = plpar_hcall_norets(opcode, arg1, arg2, arg3, arg4, - arg5, arg6, arg7); - - if (ehca_lock_hcalls) - spin_unlock_irqrestore(&hcall_lock, flags); - - if (H_IS_LONG_BUSY(ret)) { - sleep_msecs = get_longbusy_msecs(ret); - msleep_interruptible(sleep_msecs); - continue; - } - - if (ret < H_SUCCESS) - ehca_gen_err("opcode=%lx ret=%li " HCALL7_REGS_FORMAT, - opcode, ret, arg1, arg2, arg3, - arg4, arg5, arg6, arg7); - else - if (unlikely(ehca_debug_level >= 2)) - ehca_gen_dbg("opcode=%lx ret=%li", opcode, ret); - - return ret; - } - - return H_BUSY; -} - -static long ehca_plpar_hcall9(unsigned long opcode, - unsigned long *outs, /* array of 9 outputs */ - unsigned long arg1, - unsigned long arg2, - unsigned long arg3, - unsigned long arg4, - unsigned long arg5, - unsigned long arg6, - unsigned long arg7, - unsigned long arg8, - unsigned long arg9) -{ - long ret; - int i, sleep_msecs; - unsigned long flags = 0; - - if (unlikely(ehca_debug_level >= 2)) - ehca_gen_dbg("INPUT -- opcode=%lx " HCALL9_REGS_FORMAT, opcode, - arg1, arg2, arg3, arg4, arg5, - arg6, arg7, arg8, arg9); - - for (i = 0; i < 5; i++) { - /* serialize hCalls to work around firmware issue */ - if (ehca_lock_hcalls) - spin_lock_irqsave(&hcall_lock, flags); - - ret = plpar_hcall9(opcode, outs, - arg1, arg2, arg3, arg4, arg5, - arg6, arg7, arg8, arg9); - - if (ehca_lock_hcalls) - spin_unlock_irqrestore(&hcall_lock, flags); - - if (H_IS_LONG_BUSY(ret)) { - sleep_msecs = get_longbusy_msecs(ret); - msleep_interruptible(sleep_msecs); - continue; - } - - if (ret < H_SUCCESS) { - ehca_gen_err("INPUT -- opcode=%lx " HCALL9_REGS_FORMAT, - opcode, arg1, arg2, arg3, arg4, arg5, - arg6, arg7, arg8, arg9); - ehca_gen_err("OUTPUT -- ret=%li " HCALL9_REGS_FORMAT, - ret, outs[0], outs[1], outs[2], outs[3], - outs[4], outs[5], outs[6], outs[7], - outs[8]); - } else if (unlikely(ehca_debug_level >= 2)) - ehca_gen_dbg("OUTPUT -- ret=%li " HCALL9_REGS_FORMAT, - ret, outs[0], outs[1], outs[2], outs[3], - outs[4], outs[5], outs[6], outs[7], - outs[8]); - return ret; - } - - return H_BUSY; -} - -u64 hipz_h_alloc_resource_eq(const struct ipz_adapter_handle adapter_handle, - struct ehca_pfeq *pfeq, - const u32 neq_control, - const u32 number_of_entries, - struct ipz_eq_handle *eq_handle, - u32 *act_nr_of_entries, - u32 *act_pages, - u32 *eq_ist) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - u64 allocate_controls; - - /* resource type */ - allocate_controls = 3ULL; - - /* ISN is associated */ - if (neq_control != 1) - allocate_controls = (1ULL << (63 - 7)) | allocate_controls; - else /* notification event queue */ - allocate_controls = (1ULL << 63) | allocate_controls; - - ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, - adapter_handle.handle, /* r4 */ - allocate_controls, /* r5 */ - number_of_entries, /* r6 */ - 0, 0, 0, 0, 0, 0); - eq_handle->handle = outs[0]; - *act_nr_of_entries = (u32)outs[3]; - *act_pages = (u32)outs[4]; - *eq_ist = (u32)outs[5]; - - if (ret == H_NOT_ENOUGH_RESOURCES) - ehca_gen_err("Not enough resource - ret=%lli ", ret); - - return ret; -} - -u64 hipz_h_reset_event(const struct ipz_adapter_handle adapter_handle, - struct ipz_eq_handle eq_handle, - const u64 event_mask) -{ - return ehca_plpar_hcall_norets(H_RESET_EVENTS, - adapter_handle.handle, /* r4 */ - eq_handle.handle, /* r5 */ - event_mask, /* r6 */ - 0, 0, 0, 0); -} - -u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle, - struct ehca_cq *cq, - struct ehca_alloc_cq_parms *param) -{ - int rc; - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, - adapter_handle.handle, /* r4 */ - 2, /* r5 */ - param->eq_handle.handle, /* r6 */ - cq->token, /* r7 */ - param->nr_cqe, /* r8 */ - 0, 0, 0, 0); - cq->ipz_cq_handle.handle = outs[0]; - param->act_nr_of_entries = (u32)outs[3]; - param->act_pages = (u32)outs[4]; - - if (ret == H_SUCCESS) { - rc = hcp_galpas_ctor(&cq->galpas, 0, outs[5], outs[6]); - if (rc) { - ehca_gen_err("Could not establish HW access. rc=%d paddr=%#lx", - rc, outs[5]); - - ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - cq->ipz_cq_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); - ret = H_NO_MEM; - } - } - - if (ret == H_NOT_ENOUGH_RESOURCES) - ehca_gen_err("Not enough resources. ret=%lli", ret); - - return ret; -} - -u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle, - struct ehca_alloc_qp_parms *parms, int is_user) -{ - int rc; - u64 ret; - u64 allocate_controls, max_r10_reg, r11, r12; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - allocate_controls = - EHCA_BMASK_SET(H_ALL_RES_QP_ENHANCED_OPS, parms->ext_type) - | EHCA_BMASK_SET(H_ALL_RES_QP_PTE_PIN, 0) - | EHCA_BMASK_SET(H_ALL_RES_QP_SERVICE_TYPE, parms->servicetype) - | EHCA_BMASK_SET(H_ALL_RES_QP_SIGNALING_TYPE, parms->sigtype) - | EHCA_BMASK_SET(H_ALL_RES_QP_STORAGE, parms->qp_storage) - | EHCA_BMASK_SET(H_ALL_RES_QP_SMALL_SQ_PAGE_SIZE, - parms->squeue.page_size) - | EHCA_BMASK_SET(H_ALL_RES_QP_SMALL_RQ_PAGE_SIZE, - parms->rqueue.page_size) - | EHCA_BMASK_SET(H_ALL_RES_QP_LL_RQ_CQE_POSTING, - !!(parms->ll_comp_flags & LLQP_RECV_COMP)) - | EHCA_BMASK_SET(H_ALL_RES_QP_LL_SQ_CQE_POSTING, - !!(parms->ll_comp_flags & LLQP_SEND_COMP)) - | EHCA_BMASK_SET(H_ALL_RES_QP_UD_AV_LKEY_CTRL, - parms->ud_av_l_key_ctl) - | EHCA_BMASK_SET(H_ALL_RES_QP_RESOURCE_TYPE, 1); - - max_r10_reg = - EHCA_BMASK_SET(H_ALL_RES_QP_MAX_OUTST_SEND_WR, - parms->squeue.max_wr + 1) - | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_OUTST_RECV_WR, - parms->rqueue.max_wr + 1) - | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_SEND_SGE, - parms->squeue.max_sge) - | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_RECV_SGE, - parms->rqueue.max_sge); - - r11 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_QP_TOKEN, parms->srq_token); - - if (parms->ext_type == EQPT_SRQ) - r12 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_LIMIT, parms->srq_limit); - else - r12 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_QPN, parms->srq_qpn); - - ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, - adapter_handle.handle, /* r4 */ - allocate_controls, /* r5 */ - parms->send_cq_handle.handle, - parms->recv_cq_handle.handle, - parms->eq_handle.handle, - ((u64)parms->token << 32) | parms->pd.value, - max_r10_reg, r11, r12); - - parms->qp_handle.handle = outs[0]; - parms->real_qp_num = (u32)outs[1]; - parms->squeue.act_nr_wqes = - (u16)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_OUTST_SEND_WR, outs[2]); - parms->rqueue.act_nr_wqes = - (u16)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_OUTST_RECV_WR, outs[2]); - parms->squeue.act_nr_sges = - (u8)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_SEND_SGE, outs[3]); - parms->rqueue.act_nr_sges = - (u8)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_RECV_SGE, outs[3]); - parms->squeue.queue_size = - (u32)EHCA_BMASK_GET(H_ALL_RES_QP_SQUEUE_SIZE_PAGES, outs[4]); - parms->rqueue.queue_size = - (u32)EHCA_BMASK_GET(H_ALL_RES_QP_RQUEUE_SIZE_PAGES, outs[4]); - - if (ret == H_SUCCESS) { - rc = hcp_galpas_ctor(&parms->galpas, is_user, outs[6], outs[6]); - if (rc) { - ehca_gen_err("Could not establish HW access. rc=%d paddr=%#lx", - rc, outs[6]); - - ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - parms->qp_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); - ret = H_NO_MEM; - } - } - - if (ret == H_NOT_ENOUGH_RESOURCES) - ehca_gen_err("Not enough resources. ret=%lli", ret); - - return ret; -} - -u64 hipz_h_query_port(const struct ipz_adapter_handle adapter_handle, - const u8 port_id, - struct hipz_query_port *query_port_response_block) -{ - u64 ret; - u64 r_cb = __pa(query_port_response_block); - - if (r_cb & (EHCA_PAGESIZE-1)) { - ehca_gen_err("response block not page aligned"); - return H_PARAMETER; - } - - ret = ehca_plpar_hcall_norets(H_QUERY_PORT, - adapter_handle.handle, /* r4 */ - port_id, /* r5 */ - r_cb, /* r6 */ - 0, 0, 0, 0); - - if (ehca_debug_level >= 2) - ehca_dmp(query_port_response_block, 64, "response_block"); - - return ret; -} - -u64 hipz_h_modify_port(const struct ipz_adapter_handle adapter_handle, - const u8 port_id, const u32 port_cap, - const u8 init_type, const int modify_mask) -{ - u64 port_attributes = port_cap; - - if (modify_mask & IB_PORT_SHUTDOWN) - port_attributes |= EHCA_BMASK_SET(H_MP_SHUTDOWN, 1); - if (modify_mask & IB_PORT_INIT_TYPE) - port_attributes |= EHCA_BMASK_SET(H_MP_INIT_TYPE, init_type); - if (modify_mask & IB_PORT_RESET_QKEY_CNTR) - port_attributes |= EHCA_BMASK_SET(H_MP_RESET_QKEY_CTR, 1); - - return ehca_plpar_hcall_norets(H_MODIFY_PORT, - adapter_handle.handle, /* r4 */ - port_id, /* r5 */ - port_attributes, /* r6 */ - 0, 0, 0, 0); -} - -u64 hipz_h_query_hca(const struct ipz_adapter_handle adapter_handle, - struct hipz_query_hca *query_hca_rblock) -{ - u64 r_cb = __pa(query_hca_rblock); - - if (r_cb & (EHCA_PAGESIZE-1)) { - ehca_gen_err("response_block=%p not page aligned", - query_hca_rblock); - return H_PARAMETER; - } - - return ehca_plpar_hcall_norets(H_QUERY_HCA, - adapter_handle.handle, /* r4 */ - r_cb, /* r5 */ - 0, 0, 0, 0, 0); -} - -u64 hipz_h_register_rpage(const struct ipz_adapter_handle adapter_handle, - const u8 pagesize, - const u8 queue_type, - const u64 resource_handle, - const u64 logical_address_of_page, - u64 count) -{ - return ehca_plpar_hcall_norets(H_REGISTER_RPAGES, - adapter_handle.handle, /* r4 */ - (u64)queue_type | ((u64)pagesize) << 8, - /* r5 */ - resource_handle, /* r6 */ - logical_address_of_page, /* r7 */ - count, /* r8 */ - 0, 0); -} - -u64 hipz_h_register_rpage_eq(const struct ipz_adapter_handle adapter_handle, - const struct ipz_eq_handle eq_handle, - struct ehca_pfeq *pfeq, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count) -{ - if (count != 1) { - ehca_gen_err("Ppage counter=%llx", count); - return H_PARAMETER; - } - return hipz_h_register_rpage(adapter_handle, - pagesize, - queue_type, - eq_handle.handle, - logical_address_of_page, count); -} - -u64 hipz_h_query_int_state(const struct ipz_adapter_handle adapter_handle, - u32 ist) -{ - u64 ret; - ret = ehca_plpar_hcall_norets(H_QUERY_INT_STATE, - adapter_handle.handle, /* r4 */ - ist, /* r5 */ - 0, 0, 0, 0, 0); - - if (ret != H_SUCCESS && ret != H_BUSY) - ehca_gen_err("Could not query interrupt state."); - - return ret; -} - -u64 hipz_h_register_rpage_cq(const struct ipz_adapter_handle adapter_handle, - const struct ipz_cq_handle cq_handle, - struct ehca_pfcq *pfcq, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count, - const struct h_galpa gal) -{ - if (count != 1) { - ehca_gen_err("Page counter=%llx", count); - return H_PARAMETER; - } - - return hipz_h_register_rpage(adapter_handle, pagesize, queue_type, - cq_handle.handle, logical_address_of_page, - count); -} - -u64 hipz_h_register_rpage_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count, - const struct h_galpa galpa) -{ - if (count > 1) { - ehca_gen_err("Page counter=%llx", count); - return H_PARAMETER; - } - - return hipz_h_register_rpage(adapter_handle, pagesize, queue_type, - qp_handle.handle, logical_address_of_page, - count); -} - -u64 hipz_h_disable_and_get_wqe(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - void **log_addr_next_sq_wqe2processed, - void **log_addr_next_rq_wqe2processed, - int dis_and_get_function_code) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_DISABLE_AND_GETC, outs, - adapter_handle.handle, /* r4 */ - dis_and_get_function_code, /* r5 */ - qp_handle.handle, /* r6 */ - 0, 0, 0, 0, 0, 0); - if (log_addr_next_sq_wqe2processed) - *log_addr_next_sq_wqe2processed = (void *)outs[0]; - if (log_addr_next_rq_wqe2processed) - *log_addr_next_rq_wqe2processed = (void *)outs[1]; - - return ret; -} - -u64 hipz_h_modify_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - const u64 update_mask, - struct hcp_modify_qp_control_block *mqpcb, - struct h_galpa gal) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - ret = ehca_plpar_hcall9(H_MODIFY_QP, outs, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - update_mask, /* r6 */ - __pa(mqpcb), /* r7 */ - 0, 0, 0, 0, 0); - - if (ret == H_NOT_ENOUGH_RESOURCES) - ehca_gen_err("Insufficient resources ret=%lli", ret); - - return ret; -} - -u64 hipz_h_query_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - struct hcp_modify_qp_control_block *qqpcb, - struct h_galpa gal) -{ - return ehca_plpar_hcall_norets(H_QUERY_QP, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - __pa(qqpcb), /* r6 */ - 0, 0, 0, 0); -} - -u64 hipz_h_destroy_qp(const struct ipz_adapter_handle adapter_handle, - struct ehca_qp *qp) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = hcp_galpas_dtor(&qp->galpas); - if (ret) { - ehca_gen_err("Could not destruct qp->galpas"); - return H_RESOURCE; - } - ret = ehca_plpar_hcall9(H_DISABLE_AND_GETC, outs, - adapter_handle.handle, /* r4 */ - /* function code */ - 1, /* r5 */ - qp->ipz_qp_handle.handle, /* r6 */ - 0, 0, 0, 0, 0, 0); - if (ret == H_HARDWARE) - ehca_gen_err("HCA not operational. ret=%lli", ret); - - ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - qp->ipz_qp_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); - - if (ret == H_RESOURCE) - ehca_gen_err("Resource still in use. ret=%lli", ret); - - return ret; -} - -u64 hipz_h_define_aqp0(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u32 port) -{ - return ehca_plpar_hcall_norets(H_DEFINE_AQP0, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - port, /* r6 */ - 0, 0, 0, 0); -} - -u64 hipz_h_define_aqp1(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u32 port, u32 * pma_qp_nr, - u32 * bma_qp_nr) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_DEFINE_AQP1, outs, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - port, /* r6 */ - 0, 0, 0, 0, 0, 0); - *pma_qp_nr = (u32)outs[0]; - *bma_qp_nr = (u32)outs[1]; - - if (ret == H_ALIAS_EXIST) - ehca_gen_err("AQP1 already exists. ret=%lli", ret); - - return ret; -} - -u64 hipz_h_attach_mcqp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u16 mcg_dlid, - u64 subnet_prefix, u64 interface_id) -{ - u64 ret; - - ret = ehca_plpar_hcall_norets(H_ATTACH_MCQP, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - mcg_dlid, /* r6 */ - interface_id, /* r7 */ - subnet_prefix, /* r8 */ - 0, 0); - - if (ret == H_NOT_ENOUGH_RESOURCES) - ehca_gen_err("Not enough resources. ret=%lli", ret); - - return ret; -} - -u64 hipz_h_detach_mcqp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u16 mcg_dlid, - u64 subnet_prefix, u64 interface_id) -{ - return ehca_plpar_hcall_norets(H_DETACH_MCQP, - adapter_handle.handle, /* r4 */ - qp_handle.handle, /* r5 */ - mcg_dlid, /* r6 */ - interface_id, /* r7 */ - subnet_prefix, /* r8 */ - 0, 0); -} - -u64 hipz_h_destroy_cq(const struct ipz_adapter_handle adapter_handle, - struct ehca_cq *cq, - u8 force_flag) -{ - u64 ret; - - ret = hcp_galpas_dtor(&cq->galpas); - if (ret) { - ehca_gen_err("Could not destruct cp->galpas"); - return H_RESOURCE; - } - - ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - cq->ipz_cq_handle.handle, /* r5 */ - force_flag != 0 ? 1L : 0L, /* r6 */ - 0, 0, 0, 0); - - if (ret == H_RESOURCE) - ehca_gen_err("H_FREE_RESOURCE failed ret=%lli ", ret); - - return ret; -} - -u64 hipz_h_destroy_eq(const struct ipz_adapter_handle adapter_handle, - struct ehca_eq *eq) -{ - u64 ret; - - ret = hcp_galpas_dtor(&eq->galpas); - if (ret) { - ehca_gen_err("Could not destruct eq->galpas"); - return H_RESOURCE; - } - - ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - eq->ipz_eq_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); - - if (ret == H_RESOURCE) - ehca_gen_err("Resource in use. ret=%lli ", ret); - - return ret; -} - -u64 hipz_h_alloc_resource_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u64 vaddr, - const u64 length, - const u32 access_ctrl, - const struct ipz_pd pd, - struct ehca_mr_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, - adapter_handle.handle, /* r4 */ - 5, /* r5 */ - vaddr, /* r6 */ - length, /* r7 */ - (((u64)access_ctrl) << 32ULL), /* r8 */ - pd.value, /* r9 */ - 0, 0, 0); - outparms->handle.handle = outs[0]; - outparms->lkey = (u32)outs[2]; - outparms->rkey = (u32)outs[3]; - - return ret; -} - -u64 hipz_h_register_rpage_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count) -{ - u64 ret; - - if (unlikely(ehca_debug_level >= 3)) { - if (count > 1) { - u64 *kpage; - int i; - kpage = __va(logical_address_of_page); - for (i = 0; i < count; i++) - ehca_gen_dbg("kpage[%d]=%p", - i, (void *)kpage[i]); - } else - ehca_gen_dbg("kpage=%p", - (void *)logical_address_of_page); - } - - if ((count > 1) && (logical_address_of_page & (EHCA_PAGESIZE-1))) { - ehca_gen_err("logical_address_of_page not on a 4k boundary " - "adapter_handle=%llx mr=%p mr_handle=%llx " - "pagesize=%x queue_type=%x " - "logical_address_of_page=%llx count=%llx", - adapter_handle.handle, mr, - mr->ipz_mr_handle.handle, pagesize, queue_type, - logical_address_of_page, count); - ret = H_PARAMETER; - } else - ret = hipz_h_register_rpage(adapter_handle, pagesize, - queue_type, - mr->ipz_mr_handle.handle, - logical_address_of_page, count); - return ret; -} - -u64 hipz_h_query_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - struct ehca_mr_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_QUERY_MR, outs, - adapter_handle.handle, /* r4 */ - mr->ipz_mr_handle.handle, /* r5 */ - 0, 0, 0, 0, 0, 0, 0); - outparms->len = outs[0]; - outparms->vaddr = outs[1]; - outparms->acl = outs[4] >> 32; - outparms->lkey = (u32)(outs[5] >> 32); - outparms->rkey = (u32)(outs[5] & (0xffffffff)); - - return ret; -} - -u64 hipz_h_free_resource_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr) -{ - return ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - mr->ipz_mr_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); -} - -u64 hipz_h_reregister_pmr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u64 vaddr_in, - const u64 length, - const u32 access_ctrl, - const struct ipz_pd pd, - const u64 mr_addr_cb, - struct ehca_mr_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_REREGISTER_PMR, outs, - adapter_handle.handle, /* r4 */ - mr->ipz_mr_handle.handle, /* r5 */ - vaddr_in, /* r6 */ - length, /* r7 */ - /* r8 */ - ((((u64)access_ctrl) << 32ULL) | pd.value), - mr_addr_cb, /* r9 */ - 0, 0, 0); - outparms->vaddr = outs[1]; - outparms->lkey = (u32)outs[2]; - outparms->rkey = (u32)outs[3]; - - return ret; -} - -u64 hipz_h_register_smr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const struct ehca_mr *orig_mr, - const u64 vaddr_in, - const u32 access_ctrl, - const struct ipz_pd pd, - struct ehca_mr_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_REGISTER_SMR, outs, - adapter_handle.handle, /* r4 */ - orig_mr->ipz_mr_handle.handle, /* r5 */ - vaddr_in, /* r6 */ - (((u64)access_ctrl) << 32ULL), /* r7 */ - pd.value, /* r8 */ - 0, 0, 0, 0); - outparms->handle.handle = outs[0]; - outparms->lkey = (u32)outs[2]; - outparms->rkey = (u32)outs[3]; - - return ret; -} - -u64 hipz_h_alloc_resource_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw, - const struct ipz_pd pd, - struct ehca_mw_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, - adapter_handle.handle, /* r4 */ - 6, /* r5 */ - pd.value, /* r6 */ - 0, 0, 0, 0, 0, 0); - outparms->handle.handle = outs[0]; - outparms->rkey = (u32)outs[3]; - - return ret; -} - -u64 hipz_h_query_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw, - struct ehca_mw_hipzout_parms *outparms) -{ - u64 ret; - unsigned long outs[PLPAR_HCALL9_BUFSIZE]; - - ret = ehca_plpar_hcall9(H_QUERY_MW, outs, - adapter_handle.handle, /* r4 */ - mw->ipz_mw_handle.handle, /* r5 */ - 0, 0, 0, 0, 0, 0, 0); - outparms->rkey = (u32)outs[3]; - - return ret; -} - -u64 hipz_h_free_resource_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw) -{ - return ehca_plpar_hcall_norets(H_FREE_RESOURCE, - adapter_handle.handle, /* r4 */ - mw->ipz_mw_handle.handle, /* r5 */ - 0, 0, 0, 0, 0); -} - -u64 hipz_h_error_data(const struct ipz_adapter_handle adapter_handle, - const u64 ressource_handle, - void *rblock, - unsigned long *byte_count) -{ - u64 r_cb = __pa(rblock); - - if (r_cb & (EHCA_PAGESIZE-1)) { - ehca_gen_err("rblock not page aligned."); - return H_PARAMETER; - } - - return ehca_plpar_hcall_norets(H_ERROR_DATA, - adapter_handle.handle, - ressource_handle, - r_cb, - 0, 0, 0, 0); -} - -u64 hipz_h_eoi(int irq) -{ - unsigned long xirr; - - iosync(); - xirr = (0xffULL << 24) | irq; - - return plpar_hcall_norets(H_EOI, xirr); -} diff --git a/drivers/staging/rdma/ehca/hcp_if.h b/drivers/staging/rdma/ehca/hcp_if.h deleted file mode 100644 index a46e514c367b..000000000000 --- a/drivers/staging/rdma/ehca/hcp_if.h +++ /dev/null @@ -1,265 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Firmware Infiniband Interface code for POWER - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * Gerd Bayer - * Waleri Fomin - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __HCP_IF_H__ -#define __HCP_IF_H__ - -#include "ehca_classes.h" -#include "ehca_tools.h" -#include "hipz_hw.h" - -/* - * hipz_h_alloc_resource_eq allocates EQ resources in HW and FW, initialize - * resources, create the empty EQPT (ring). - */ -u64 hipz_h_alloc_resource_eq(const struct ipz_adapter_handle adapter_handle, - struct ehca_pfeq *pfeq, - const u32 neq_control, - const u32 number_of_entries, - struct ipz_eq_handle *eq_handle, - u32 * act_nr_of_entries, - u32 * act_pages, - u32 * eq_ist); - -u64 hipz_h_reset_event(const struct ipz_adapter_handle adapter_handle, - struct ipz_eq_handle eq_handle, - const u64 event_mask); -/* - * hipz_h_allocate_resource_cq allocates CQ resources in HW and FW, initialize - * resources, create the empty CQPT (ring). - */ -u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle, - struct ehca_cq *cq, - struct ehca_alloc_cq_parms *param); - - -/* - * hipz_h_alloc_resource_qp allocates QP resources in HW and FW, - * initialize resources, create empty QPPTs (2 rings). - */ -u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle, - struct ehca_alloc_qp_parms *parms, int is_user); - -u64 hipz_h_query_port(const struct ipz_adapter_handle adapter_handle, - const u8 port_id, - struct hipz_query_port *query_port_response_block); - -u64 hipz_h_modify_port(const struct ipz_adapter_handle adapter_handle, - const u8 port_id, const u32 port_cap, - const u8 init_type, const int modify_mask); - -u64 hipz_h_query_hca(const struct ipz_adapter_handle adapter_handle, - struct hipz_query_hca *query_hca_rblock); - -/* - * hipz_h_register_rpage internal function in hcp_if.h for all - * hcp_H_REGISTER_RPAGE calls. - */ -u64 hipz_h_register_rpage(const struct ipz_adapter_handle adapter_handle, - const u8 pagesize, - const u8 queue_type, - const u64 resource_handle, - const u64 logical_address_of_page, - u64 count); - -u64 hipz_h_register_rpage_eq(const struct ipz_adapter_handle adapter_handle, - const struct ipz_eq_handle eq_handle, - struct ehca_pfeq *pfeq, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count); - -u64 hipz_h_query_int_state(const struct ipz_adapter_handle - hcp_adapter_handle, - u32 ist); - -u64 hipz_h_register_rpage_cq(const struct ipz_adapter_handle adapter_handle, - const struct ipz_cq_handle cq_handle, - struct ehca_pfcq *pfcq, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count, - const struct h_galpa gal); - -u64 hipz_h_register_rpage_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count, - const struct h_galpa galpa); - -u64 hipz_h_disable_and_get_wqe(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - void **log_addr_next_sq_wqe_tb_processed, - void **log_addr_next_rq_wqe_tb_processed, - int dis_and_get_function_code); -enum hcall_sigt { - HCALL_SIGT_NO_CQE = 0, - HCALL_SIGT_BY_WQE = 1, - HCALL_SIGT_EVERY = 2 -}; - -u64 hipz_h_modify_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - const u64 update_mask, - struct hcp_modify_qp_control_block *mqpcb, - struct h_galpa gal); - -u64 hipz_h_query_qp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct ehca_pfqp *pfqp, - struct hcp_modify_qp_control_block *qqpcb, - struct h_galpa gal); - -u64 hipz_h_destroy_qp(const struct ipz_adapter_handle adapter_handle, - struct ehca_qp *qp); - -u64 hipz_h_define_aqp0(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u32 port); - -u64 hipz_h_define_aqp1(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u32 port, u32 * pma_qp_nr, - u32 * bma_qp_nr); - -u64 hipz_h_attach_mcqp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u16 mcg_dlid, - u64 subnet_prefix, u64 interface_id); - -u64 hipz_h_detach_mcqp(const struct ipz_adapter_handle adapter_handle, - const struct ipz_qp_handle qp_handle, - struct h_galpa gal, - u16 mcg_dlid, - u64 subnet_prefix, u64 interface_id); - -u64 hipz_h_destroy_cq(const struct ipz_adapter_handle adapter_handle, - struct ehca_cq *cq, - u8 force_flag); - -u64 hipz_h_destroy_eq(const struct ipz_adapter_handle adapter_handle, - struct ehca_eq *eq); - -/* - * hipz_h_alloc_resource_mr allocates MR resources in HW and FW, initialize - * resources. - */ -u64 hipz_h_alloc_resource_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u64 vaddr, - const u64 length, - const u32 access_ctrl, - const struct ipz_pd pd, - struct ehca_mr_hipzout_parms *outparms); - -/* hipz_h_register_rpage_mr registers MR resource pages in HW and FW */ -u64 hipz_h_register_rpage_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u8 pagesize, - const u8 queue_type, - const u64 logical_address_of_page, - const u64 count); - -/* hipz_h_query_mr queries MR in HW and FW */ -u64 hipz_h_query_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - struct ehca_mr_hipzout_parms *outparms); - -/* hipz_h_free_resource_mr frees MR resources in HW and FW */ -u64 hipz_h_free_resource_mr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr); - -/* hipz_h_reregister_pmr reregisters MR in HW and FW */ -u64 hipz_h_reregister_pmr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const u64 vaddr_in, - const u64 length, - const u32 access_ctrl, - const struct ipz_pd pd, - const u64 mr_addr_cb, - struct ehca_mr_hipzout_parms *outparms); - -/* hipz_h_register_smr register shared MR in HW and FW */ -u64 hipz_h_register_smr(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mr *mr, - const struct ehca_mr *orig_mr, - const u64 vaddr_in, - const u32 access_ctrl, - const struct ipz_pd pd, - struct ehca_mr_hipzout_parms *outparms); - -/* - * hipz_h_alloc_resource_mw allocates MW resources in HW and FW, initialize - * resources. - */ -u64 hipz_h_alloc_resource_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw, - const struct ipz_pd pd, - struct ehca_mw_hipzout_parms *outparms); - -/* hipz_h_query_mw queries MW in HW and FW */ -u64 hipz_h_query_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw, - struct ehca_mw_hipzout_parms *outparms); - -/* hipz_h_free_resource_mw frees MW resources in HW and FW */ -u64 hipz_h_free_resource_mw(const struct ipz_adapter_handle adapter_handle, - const struct ehca_mw *mw); - -u64 hipz_h_error_data(const struct ipz_adapter_handle adapter_handle, - const u64 ressource_handle, - void *rblock, - unsigned long *byte_count); -u64 hipz_h_eoi(int irq); - -#endif /* __HCP_IF_H__ */ diff --git a/drivers/staging/rdma/ehca/hcp_phyp.c b/drivers/staging/rdma/ehca/hcp_phyp.c deleted file mode 100644 index 077376ff3d28..000000000000 --- a/drivers/staging/rdma/ehca/hcp_phyp.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * load store abstraction for ehca register access with tracing - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "ehca_classes.h" -#include "hipz_hw.h" - -u64 hcall_map_page(u64 physaddr) -{ - return (u64)ioremap(physaddr, EHCA_PAGESIZE); -} - -int hcall_unmap_page(u64 mapaddr) -{ - iounmap((volatile void __iomem *) mapaddr); - return 0; -} - -int hcp_galpas_ctor(struct h_galpas *galpas, int is_user, - u64 paddr_kernel, u64 paddr_user) -{ - if (!is_user) { - galpas->kernel.fw_handle = hcall_map_page(paddr_kernel); - if (!galpas->kernel.fw_handle) - return -ENOMEM; - } else - galpas->kernel.fw_handle = 0; - - galpas->user.fw_handle = paddr_user; - - return 0; -} - -int hcp_galpas_dtor(struct h_galpas *galpas) -{ - if (galpas->kernel.fw_handle) { - int ret = hcall_unmap_page(galpas->kernel.fw_handle); - if (ret) - return ret; - } - - galpas->user.fw_handle = galpas->kernel.fw_handle = 0; - - return 0; -} diff --git a/drivers/staging/rdma/ehca/hcp_phyp.h b/drivers/staging/rdma/ehca/hcp_phyp.h deleted file mode 100644 index d1b029910249..000000000000 --- a/drivers/staging/rdma/ehca/hcp_phyp.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * Firmware calls - * - * Authors: Christoph Raisch - * Hoang-Nam Nguyen - * Waleri Fomin - * Gerd Bayer - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __HCP_PHYP_H__ -#define __HCP_PHYP_H__ - - -/* - * eHCA page (mapped into memory) - * resource to access eHCA register pages in CPU address space -*/ -struct h_galpa { - u64 fw_handle; - /* for pSeries this is a 64bit memory address where - I/O memory is mapped into CPU address space (kv) */ -}; - -/* - * resource to access eHCA address space registers, all types - */ -struct h_galpas { - u32 pid; /*PID of userspace galpa checking */ - struct h_galpa user; /* user space accessible resource, - set to 0 if unused */ - struct h_galpa kernel; /* kernel space accessible resource, - set to 0 if unused */ -}; - -static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset) -{ - u64 addr = galpa.fw_handle + offset; - return *(volatile u64 __force *)addr; -} - -static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value) -{ - u64 addr = galpa.fw_handle + offset; - *(volatile u64 __force *)addr = value; -} - -int hcp_galpas_ctor(struct h_galpas *galpas, int is_user, - u64 paddr_kernel, u64 paddr_user); - -int hcp_galpas_dtor(struct h_galpas *galpas); - -u64 hcall_map_page(u64 physaddr); - -int hcall_unmap_page(u64 mapaddr); - -#endif diff --git a/drivers/staging/rdma/ehca/hipz_fns.h b/drivers/staging/rdma/ehca/hipz_fns.h deleted file mode 100644 index 9dac93d02140..000000000000 --- a/drivers/staging/rdma/ehca/hipz_fns.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * HW abstraction register functions - * - * Authors: Christoph Raisch - * Reinhard Ernst - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __HIPZ_FNS_H__ -#define __HIPZ_FNS_H__ - -#include "ehca_classes.h" -#include "hipz_hw.h" - -#include "hipz_fns_core.h" - -#define hipz_galpa_store_eq(gal, offset, value) \ - hipz_galpa_store(gal, EQTEMM_OFFSET(offset), value) - -#define hipz_galpa_load_eq(gal, offset) \ - hipz_galpa_load(gal, EQTEMM_OFFSET(offset)) - -#define hipz_galpa_store_qped(gal, offset, value) \ - hipz_galpa_store(gal, QPEDMM_OFFSET(offset), value) - -#define hipz_galpa_load_qped(gal, offset) \ - hipz_galpa_load(gal, QPEDMM_OFFSET(offset)) - -#define hipz_galpa_store_mrmw(gal, offset, value) \ - hipz_galpa_store(gal, MRMWMM_OFFSET(offset), value) - -#define hipz_galpa_load_mrmw(gal, offset) \ - hipz_galpa_load(gal, MRMWMM_OFFSET(offset)) - -#endif diff --git a/drivers/staging/rdma/ehca/hipz_fns_core.h b/drivers/staging/rdma/ehca/hipz_fns_core.h deleted file mode 100644 index 868735fd3187..000000000000 --- a/drivers/staging/rdma/ehca/hipz_fns_core.h +++ /dev/null @@ -1,100 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * HW abstraction register functions - * - * Authors: Christoph Raisch - * Heiko J Schick - * Hoang-Nam Nguyen - * Reinhard Ernst - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __HIPZ_FNS_CORE_H__ -#define __HIPZ_FNS_CORE_H__ - -#include "hcp_phyp.h" -#include "hipz_hw.h" - -#define hipz_galpa_store_cq(gal, offset, value) \ - hipz_galpa_store(gal, CQTEMM_OFFSET(offset), value) - -#define hipz_galpa_load_cq(gal, offset) \ - hipz_galpa_load(gal, CQTEMM_OFFSET(offset)) - -#define hipz_galpa_store_qp(gal, offset, value) \ - hipz_galpa_store(gal, QPTEMM_OFFSET(offset), value) -#define hipz_galpa_load_qp(gal, offset) \ - hipz_galpa_load(gal, QPTEMM_OFFSET(offset)) - -static inline void hipz_update_sqa(struct ehca_qp *qp, u16 nr_wqes) -{ - /* ringing doorbell :-) */ - hipz_galpa_store_qp(qp->galpas.kernel, qpx_sqa, - EHCA_BMASK_SET(QPX_SQADDER, nr_wqes)); -} - -static inline void hipz_update_rqa(struct ehca_qp *qp, u16 nr_wqes) -{ - /* ringing doorbell :-) */ - hipz_galpa_store_qp(qp->galpas.kernel, qpx_rqa, - EHCA_BMASK_SET(QPX_RQADDER, nr_wqes)); -} - -static inline void hipz_update_feca(struct ehca_cq *cq, u32 nr_cqes) -{ - hipz_galpa_store_cq(cq->galpas.kernel, cqx_feca, - EHCA_BMASK_SET(CQX_FECADDER, nr_cqes)); -} - -static inline void hipz_set_cqx_n0(struct ehca_cq *cq, u32 value) -{ - u64 cqx_n0_reg; - - hipz_galpa_store_cq(cq->galpas.kernel, cqx_n0, - EHCA_BMASK_SET(CQX_N0_GENERATE_SOLICITED_COMP_EVENT, - value)); - cqx_n0_reg = hipz_galpa_load_cq(cq->galpas.kernel, cqx_n0); -} - -static inline void hipz_set_cqx_n1(struct ehca_cq *cq, u32 value) -{ - u64 cqx_n1_reg; - - hipz_galpa_store_cq(cq->galpas.kernel, cqx_n1, - EHCA_BMASK_SET(CQX_N1_GENERATE_COMP_EVENT, value)); - cqx_n1_reg = hipz_galpa_load_cq(cq->galpas.kernel, cqx_n1); -} - -#endif /* __HIPZ_FNC_CORE_H__ */ diff --git a/drivers/staging/rdma/ehca/hipz_hw.h b/drivers/staging/rdma/ehca/hipz_hw.h deleted file mode 100644 index bf996c7acc42..000000000000 --- a/drivers/staging/rdma/ehca/hipz_hw.h +++ /dev/null @@ -1,414 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * eHCA register definitions - * - * Authors: Waleri Fomin - * Christoph Raisch - * Reinhard Ernst - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __HIPZ_HW_H__ -#define __HIPZ_HW_H__ - -#include "ehca_tools.h" - -#define EHCA_MAX_MTU 4 - -/* QP Table Entry Memory Map */ -struct hipz_qptemm { - u64 qpx_hcr; - u64 qpx_c; - u64 qpx_herr; - u64 qpx_aer; -/* 0x20*/ - u64 qpx_sqa; - u64 qpx_sqc; - u64 qpx_rqa; - u64 qpx_rqc; -/* 0x40*/ - u64 qpx_st; - u64 qpx_pmstate; - u64 qpx_pmfa; - u64 qpx_pkey; -/* 0x60*/ - u64 qpx_pkeya; - u64 qpx_pkeyb; - u64 qpx_pkeyc; - u64 qpx_pkeyd; -/* 0x80*/ - u64 qpx_qkey; - u64 qpx_dqp; - u64 qpx_dlidp; - u64 qpx_portp; -/* 0xa0*/ - u64 qpx_slidp; - u64 qpx_slidpp; - u64 qpx_dlida; - u64 qpx_porta; -/* 0xc0*/ - u64 qpx_slida; - u64 qpx_slidpa; - u64 qpx_slvl; - u64 qpx_ipd; -/* 0xe0*/ - u64 qpx_mtu; - u64 qpx_lato; - u64 qpx_rlimit; - u64 qpx_rnrlimit; -/* 0x100*/ - u64 qpx_t; - u64 qpx_sqhp; - u64 qpx_sqptp; - u64 qpx_nspsn; -/* 0x120*/ - u64 qpx_nspsnhwm; - u64 reserved1; - u64 qpx_sdsi; - u64 qpx_sdsbc; -/* 0x140*/ - u64 qpx_sqwsize; - u64 qpx_sqwts; - u64 qpx_lsn; - u64 qpx_nssn; -/* 0x160 */ - u64 qpx_mor; - u64 qpx_cor; - u64 qpx_sqsize; - u64 qpx_erc; -/* 0x180*/ - u64 qpx_rnrrc; - u64 qpx_ernrwt; - u64 qpx_rnrresp; - u64 qpx_lmsna; -/* 0x1a0 */ - u64 qpx_sqhpc; - u64 qpx_sqcptp; - u64 qpx_sigt; - u64 qpx_wqecnt; -/* 0x1c0*/ - u64 qpx_rqhp; - u64 qpx_rqptp; - u64 qpx_rqsize; - u64 qpx_nrr; -/* 0x1e0*/ - u64 qpx_rdmac; - u64 qpx_nrpsn; - u64 qpx_lapsn; - u64 qpx_lcr; -/* 0x200*/ - u64 qpx_rwc; - u64 qpx_rwva; - u64 qpx_rdsi; - u64 qpx_rdsbc; -/* 0x220*/ - u64 qpx_rqwsize; - u64 qpx_crmsn; - u64 qpx_rdd; - u64 qpx_larpsn; -/* 0x240*/ - u64 qpx_pd; - u64 qpx_scqn; - u64 qpx_rcqn; - u64 qpx_aeqn; -/* 0x260*/ - u64 qpx_aaelog; - u64 qpx_ram; - u64 qpx_rdmaqe0; - u64 qpx_rdmaqe1; -/* 0x280*/ - u64 qpx_rdmaqe2; - u64 qpx_rdmaqe3; - u64 qpx_nrpsnhwm; -/* 0x298*/ - u64 reserved[(0x400 - 0x298) / 8]; -/* 0x400 extended data */ - u64 reserved_ext[(0x500 - 0x400) / 8]; -/* 0x500 */ - u64 reserved2[(0x1000 - 0x500) / 8]; -/* 0x1000 */ -}; - -#define QPX_SQADDER EHCA_BMASK_IBM(48, 63) -#define QPX_RQADDER EHCA_BMASK_IBM(48, 63) -#define QPX_AAELOG_RESET_SRQ_LIMIT EHCA_BMASK_IBM(3, 3) - -#define QPTEMM_OFFSET(x) offsetof(struct hipz_qptemm, x) - -/* MRMWPT Entry Memory Map */ -struct hipz_mrmwmm { - /* 0x00 */ - u64 mrx_hcr; - - u64 mrx_c; - u64 mrx_herr; - u64 mrx_aer; - /* 0x20 */ - u64 mrx_pp; - u64 reserved1; - u64 reserved2; - u64 reserved3; - /* 0x40 */ - u64 reserved4[(0x200 - 0x40) / 8]; - /* 0x200 */ - u64 mrx_ctl[64]; - -}; - -#define MRMWMM_OFFSET(x) offsetof(struct hipz_mrmwmm, x) - -struct hipz_qpedmm { - /* 0x00 */ - u64 reserved0[(0x400) / 8]; - /* 0x400 */ - u64 qpedx_phh; - u64 qpedx_ppsgp; - /* 0x410 */ - u64 qpedx_ppsgu; - u64 qpedx_ppdgp; - /* 0x420 */ - u64 qpedx_ppdgu; - u64 qpedx_aph; - /* 0x430 */ - u64 qpedx_apsgp; - u64 qpedx_apsgu; - /* 0x440 */ - u64 qpedx_apdgp; - u64 qpedx_apdgu; - /* 0x450 */ - u64 qpedx_apav; - u64 qpedx_apsav; - /* 0x460 */ - u64 qpedx_hcr; - u64 reserved1[4]; - /* 0x488 */ - u64 qpedx_rrl0; - /* 0x490 */ - u64 qpedx_rrrkey0; - u64 qpedx_rrva0; - /* 0x4a0 */ - u64 reserved2; - u64 qpedx_rrl1; - /* 0x4b0 */ - u64 qpedx_rrrkey1; - u64 qpedx_rrva1; - /* 0x4c0 */ - u64 reserved3; - u64 qpedx_rrl2; - /* 0x4d0 */ - u64 qpedx_rrrkey2; - u64 qpedx_rrva2; - /* 0x4e0 */ - u64 reserved4; - u64 qpedx_rrl3; - /* 0x4f0 */ - u64 qpedx_rrrkey3; - u64 qpedx_rrva3; -}; - -#define QPEDMM_OFFSET(x) offsetof(struct hipz_qpedmm, x) - -/* CQ Table Entry Memory Map */ -struct hipz_cqtemm { - u64 cqx_hcr; - u64 cqx_c; - u64 cqx_herr; - u64 cqx_aer; -/* 0x20 */ - u64 cqx_ptp; - u64 cqx_tp; - u64 cqx_fec; - u64 cqx_feca; -/* 0x40 */ - u64 cqx_ep; - u64 cqx_eq; -/* 0x50 */ - u64 reserved1; - u64 cqx_n0; -/* 0x60 */ - u64 cqx_n1; - u64 reserved2[(0x1000 - 0x60) / 8]; -/* 0x1000 */ -}; - -#define CQX_FEC_CQE_CNT EHCA_BMASK_IBM(32, 63) -#define CQX_FECADDER EHCA_BMASK_IBM(32, 63) -#define CQX_N0_GENERATE_SOLICITED_COMP_EVENT EHCA_BMASK_IBM(0, 0) -#define CQX_N1_GENERATE_COMP_EVENT EHCA_BMASK_IBM(0, 0) - -#define CQTEMM_OFFSET(x) offsetof(struct hipz_cqtemm, x) - -/* EQ Table Entry Memory Map */ -struct hipz_eqtemm { - u64 eqx_hcr; - u64 eqx_c; - - u64 eqx_herr; - u64 eqx_aer; -/* 0x20 */ - u64 eqx_ptp; - u64 eqx_tp; - u64 eqx_ssba; - u64 eqx_psba; - -/* 0x40 */ - u64 eqx_cec; - u64 eqx_meql; - u64 eqx_xisbi; - u64 eqx_xisc; -/* 0x60 */ - u64 eqx_it; - -}; - -#define EQTEMM_OFFSET(x) offsetof(struct hipz_eqtemm, x) - -/* access control defines for MR/MW */ -#define HIPZ_ACCESSCTRL_L_WRITE 0x00800000 -#define HIPZ_ACCESSCTRL_R_WRITE 0x00400000 -#define HIPZ_ACCESSCTRL_R_READ 0x00200000 -#define HIPZ_ACCESSCTRL_R_ATOMIC 0x00100000 -#define HIPZ_ACCESSCTRL_MW_BIND 0x00080000 - -/* query hca response block */ -struct hipz_query_hca { - u32 cur_reliable_dg; - u32 cur_qp; - u32 cur_cq; - u32 cur_eq; - u32 cur_mr; - u32 cur_mw; - u32 cur_ee_context; - u32 cur_mcast_grp; - u32 cur_qp_attached_mcast_grp; - u32 reserved1; - u32 cur_ipv6_qp; - u32 cur_eth_qp; - u32 cur_hp_mr; - u32 reserved2[3]; - u32 max_rd_domain; - u32 max_qp; - u32 max_cq; - u32 max_eq; - u32 max_mr; - u32 max_hp_mr; - u32 max_mw; - u32 max_mrwpte; - u32 max_special_mrwpte; - u32 max_rd_ee_context; - u32 max_mcast_grp; - u32 max_total_mcast_qp_attach; - u32 max_mcast_qp_attach; - u32 max_raw_ipv6_qp; - u32 max_raw_ethy_qp; - u32 internal_clock_frequency; - u32 max_pd; - u32 max_ah; - u32 max_cqe; - u32 max_wqes_wq; - u32 max_partitions; - u32 max_rr_ee_context; - u32 max_rr_qp; - u32 max_rr_hca; - u32 max_act_wqs_ee_context; - u32 max_act_wqs_qp; - u32 max_sge; - u32 max_sge_rd; - u32 memory_page_size_supported; - u64 max_mr_size; - u32 local_ca_ack_delay; - u32 num_ports; - u32 vendor_id; - u32 vendor_part_id; - u32 hw_ver; - u64 node_guid; - u64 hca_cap_indicators; - u32 data_counter_register_size; - u32 max_shared_rq; - u32 max_isns_eq; - u32 max_neq; -} __attribute__ ((packed)); - -#define HCA_CAP_AH_PORT_NR_CHECK EHCA_BMASK_IBM( 0, 0) -#define HCA_CAP_ATOMIC EHCA_BMASK_IBM( 1, 1) -#define HCA_CAP_AUTO_PATH_MIG EHCA_BMASK_IBM( 2, 2) -#define HCA_CAP_BAD_P_KEY_CTR EHCA_BMASK_IBM( 3, 3) -#define HCA_CAP_SQD_RTS_PORT_CHANGE EHCA_BMASK_IBM( 4, 4) -#define HCA_CAP_CUR_QP_STATE_MOD EHCA_BMASK_IBM( 5, 5) -#define HCA_CAP_INIT_TYPE EHCA_BMASK_IBM( 6, 6) -#define HCA_CAP_PORT_ACTIVE_EVENT EHCA_BMASK_IBM( 7, 7) -#define HCA_CAP_Q_KEY_VIOL_CTR EHCA_BMASK_IBM( 8, 8) -#define HCA_CAP_WQE_RESIZE EHCA_BMASK_IBM( 9, 9) -#define HCA_CAP_RAW_PACKET_MCAST EHCA_BMASK_IBM(10, 10) -#define HCA_CAP_SHUTDOWN_PORT EHCA_BMASK_IBM(11, 11) -#define HCA_CAP_RC_LL_QP EHCA_BMASK_IBM(12, 12) -#define HCA_CAP_SRQ EHCA_BMASK_IBM(13, 13) -#define HCA_CAP_UD_LL_QP EHCA_BMASK_IBM(16, 16) -#define HCA_CAP_RESIZE_MR EHCA_BMASK_IBM(17, 17) -#define HCA_CAP_MINI_QP EHCA_BMASK_IBM(18, 18) -#define HCA_CAP_H_ALLOC_RES_SYNC EHCA_BMASK_IBM(19, 19) - -/* query port response block */ -struct hipz_query_port { - u32 state; - u32 bad_pkey_cntr; - u32 lmc; - u32 lid; - u32 subnet_timeout; - u32 qkey_viol_cntr; - u32 sm_sl; - u32 sm_lid; - u32 capability_mask; - u32 init_type_reply; - u32 pkey_tbl_len; - u32 gid_tbl_len; - u64 gid_prefix; - u32 port_nr; - u16 pkey_entries[16]; - u8 reserved1[32]; - u32 trent_size; - u32 trbuf_size; - u64 max_msg_sz; - u32 max_mtu; - u32 vl_cap; - u32 phys_pstate; - u32 phys_state; - u32 phys_speed; - u32 phys_width; - u8 reserved2[1884]; - u64 guid_entries[255]; -} __attribute__ ((packed)); - -#endif diff --git a/drivers/staging/rdma/ehca/ipz_pt_fn.c b/drivers/staging/rdma/ehca/ipz_pt_fn.c deleted file mode 100644 index 7ffc748cb973..000000000000 --- a/drivers/staging/rdma/ehca/ipz_pt_fn.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * internal queue handling - * - * Authors: Waleri Fomin - * Reinhard Ernst - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -#include "ehca_tools.h" -#include "ipz_pt_fn.h" -#include "ehca_classes.h" - -#define PAGES_PER_KPAGE (PAGE_SIZE >> EHCA_PAGESHIFT) - -struct kmem_cache *small_qp_cache; - -void *ipz_qpageit_get_inc(struct ipz_queue *queue) -{ - void *ret = ipz_qeit_get(queue); - queue->current_q_offset += queue->pagesize; - if (queue->current_q_offset > queue->queue_length) { - queue->current_q_offset -= queue->pagesize; - ret = NULL; - } - if (((u64)ret) % queue->pagesize) { - ehca_gen_err("ERROR!! not at PAGE-Boundary"); - return NULL; - } - return ret; -} - -void *ipz_qeit_eq_get_inc(struct ipz_queue *queue) -{ - void *ret = ipz_qeit_get(queue); - u64 last_entry_in_q = queue->queue_length - queue->qe_size; - - queue->current_q_offset += queue->qe_size; - if (queue->current_q_offset > last_entry_in_q) { - queue->current_q_offset = 0; - queue->toggle_state = (~queue->toggle_state) & 1; - } - - return ret; -} - -int ipz_queue_abs_to_offset(struct ipz_queue *queue, u64 addr, u64 *q_offset) -{ - int i; - for (i = 0; i < queue->queue_length / queue->pagesize; i++) { - u64 page = __pa(queue->queue_pages[i]); - if (addr >= page && addr < page + queue->pagesize) { - *q_offset = addr - page + i * queue->pagesize; - return 0; - } - } - return -EINVAL; -} - -#if PAGE_SHIFT < EHCA_PAGESHIFT -#error Kernel pages must be at least as large than eHCA pages (4K) ! -#endif - -/* - * allocate pages for queue: - * outer loop allocates whole kernel pages (page aligned) and - * inner loop divides a kernel page into smaller hca queue pages - */ -static int alloc_queue_pages(struct ipz_queue *queue, const u32 nr_of_pages) -{ - int k, f = 0; - u8 *kpage; - - while (f < nr_of_pages) { - kpage = (u8 *)get_zeroed_page(GFP_KERNEL); - if (!kpage) - goto out; - - for (k = 0; k < PAGES_PER_KPAGE && f < nr_of_pages; k++) { - queue->queue_pages[f] = (struct ipz_page *)kpage; - kpage += EHCA_PAGESIZE; - f++; - } - } - return 1; - -out: - for (f = 0; f < nr_of_pages && queue->queue_pages[f]; - f += PAGES_PER_KPAGE) - free_page((unsigned long)(queue->queue_pages)[f]); - return 0; -} - -static int alloc_small_queue_page(struct ipz_queue *queue, struct ehca_pd *pd) -{ - int order = ilog2(queue->pagesize) - 9; - struct ipz_small_queue_page *page; - unsigned long bit; - - mutex_lock(&pd->lock); - - if (!list_empty(&pd->free[order])) - page = list_entry(pd->free[order].next, - struct ipz_small_queue_page, list); - else { - page = kmem_cache_zalloc(small_qp_cache, GFP_KERNEL); - if (!page) - goto out; - - page->page = get_zeroed_page(GFP_KERNEL); - if (!page->page) { - kmem_cache_free(small_qp_cache, page); - goto out; - } - - list_add(&page->list, &pd->free[order]); - } - - bit = find_first_zero_bit(page->bitmap, IPZ_SPAGE_PER_KPAGE >> order); - __set_bit(bit, page->bitmap); - page->fill++; - - if (page->fill == IPZ_SPAGE_PER_KPAGE >> order) - list_move(&page->list, &pd->full[order]); - - mutex_unlock(&pd->lock); - - queue->queue_pages[0] = (void *)(page->page | (bit << (order + 9))); - queue->small_page = page; - queue->offset = bit << (order + 9); - return 1; - -out: - ehca_err(pd->ib_pd.device, "failed to allocate small queue page"); - mutex_unlock(&pd->lock); - return 0; -} - -static void free_small_queue_page(struct ipz_queue *queue, struct ehca_pd *pd) -{ - int order = ilog2(queue->pagesize) - 9; - struct ipz_small_queue_page *page = queue->small_page; - unsigned long bit; - int free_page = 0; - - bit = ((unsigned long)queue->queue_pages[0] & ~PAGE_MASK) - >> (order + 9); - - mutex_lock(&pd->lock); - - __clear_bit(bit, page->bitmap); - page->fill--; - - if (page->fill == 0) { - list_del(&page->list); - free_page = 1; - } - - if (page->fill == (IPZ_SPAGE_PER_KPAGE >> order) - 1) - /* the page was full until we freed the chunk */ - list_move_tail(&page->list, &pd->free[order]); - - mutex_unlock(&pd->lock); - - if (free_page) { - free_page(page->page); - kmem_cache_free(small_qp_cache, page); - } -} - -int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue, - const u32 nr_of_pages, const u32 pagesize, - const u32 qe_size, const u32 nr_of_sg, - int is_small) -{ - if (pagesize > PAGE_SIZE) { - ehca_gen_err("FATAL ERROR: pagesize=%x " - "is greater than kernel page size", pagesize); - return 0; - } - - /* init queue fields */ - queue->queue_length = nr_of_pages * pagesize; - queue->pagesize = pagesize; - queue->qe_size = qe_size; - queue->act_nr_of_sg = nr_of_sg; - queue->current_q_offset = 0; - queue->toggle_state = 1; - queue->small_page = NULL; - - /* allocate queue page pointers */ - queue->queue_pages = kzalloc(nr_of_pages * sizeof(void *), - GFP_KERNEL | __GFP_NOWARN); - if (!queue->queue_pages) { - queue->queue_pages = vzalloc(nr_of_pages * sizeof(void *)); - if (!queue->queue_pages) { - ehca_gen_err("Couldn't allocate queue page list"); - return 0; - } - } - - /* allocate actual queue pages */ - if (is_small) { - if (!alloc_small_queue_page(queue, pd)) - goto ipz_queue_ctor_exit0; - } else - if (!alloc_queue_pages(queue, nr_of_pages)) - goto ipz_queue_ctor_exit0; - - return 1; - -ipz_queue_ctor_exit0: - ehca_gen_err("Couldn't alloc pages queue=%p " - "nr_of_pages=%x", queue, nr_of_pages); - kvfree(queue->queue_pages); - - return 0; -} - -int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue) -{ - int i, nr_pages; - - if (!queue || !queue->queue_pages) { - ehca_gen_dbg("queue or queue_pages is NULL"); - return 0; - } - - if (queue->small_page) - free_small_queue_page(queue, pd); - else { - nr_pages = queue->queue_length / queue->pagesize; - for (i = 0; i < nr_pages; i += PAGES_PER_KPAGE) - free_page((unsigned long)queue->queue_pages[i]); - } - - kvfree(queue->queue_pages); - - return 1; -} - -int ehca_init_small_qp_cache(void) -{ - small_qp_cache = kmem_cache_create("ehca_cache_small_qp", - sizeof(struct ipz_small_queue_page), - 0, SLAB_HWCACHE_ALIGN, NULL); - if (!small_qp_cache) - return -ENOMEM; - - return 0; -} - -void ehca_cleanup_small_qp_cache(void) -{ - kmem_cache_destroy(small_qp_cache); -} diff --git a/drivers/staging/rdma/ehca/ipz_pt_fn.h b/drivers/staging/rdma/ehca/ipz_pt_fn.h deleted file mode 100644 index a801274ea337..000000000000 --- a/drivers/staging/rdma/ehca/ipz_pt_fn.h +++ /dev/null @@ -1,289 +0,0 @@ -/* - * IBM eServer eHCA Infiniband device driver for Linux on POWER - * - * internal queue handling - * - * Authors: Waleri Fomin - * Reinhard Ernst - * Christoph Raisch - * - * Copyright (c) 2005 IBM Corporation - * - * All rights reserved. - * - * This source code is distributed under a dual license of GPL v2.0 and OpenIB - * BSD. - * - * OpenIB BSD License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __IPZ_PT_FN_H__ -#define __IPZ_PT_FN_H__ - -#define EHCA_PAGESHIFT 12 -#define EHCA_PAGESIZE 4096UL -#define EHCA_PAGEMASK (~(EHCA_PAGESIZE-1)) -#define EHCA_PT_ENTRIES 512UL - -#include "ehca_tools.h" -#include "ehca_qes.h" - -struct ehca_pd; -struct ipz_small_queue_page; - -extern struct kmem_cache *small_qp_cache; - -/* struct generic ehca page */ -struct ipz_page { - u8 entries[EHCA_PAGESIZE]; -}; - -#define IPZ_SPAGE_PER_KPAGE (PAGE_SIZE / 512) - -struct ipz_small_queue_page { - unsigned long page; - unsigned long bitmap[IPZ_SPAGE_PER_KPAGE / BITS_PER_LONG]; - int fill; - void *mapped_addr; - u32 mmap_count; - struct list_head list; -}; - -/* struct generic queue in linux kernel virtual memory (kv) */ -struct ipz_queue { - u64 current_q_offset; /* current queue entry */ - - struct ipz_page **queue_pages; /* array of pages belonging to queue */ - u32 qe_size; /* queue entry size */ - u32 act_nr_of_sg; - u32 queue_length; /* queue length allocated in bytes */ - u32 pagesize; - u32 toggle_state; /* toggle flag - per page */ - u32 offset; /* save offset within page for small_qp */ - struct ipz_small_queue_page *small_page; -}; - -/* - * return current Queue Entry for a certain q_offset - * returns address (kv) of Queue Entry - */ -static inline void *ipz_qeit_calc(struct ipz_queue *queue, u64 q_offset) -{ - struct ipz_page *current_page; - if (q_offset >= queue->queue_length) - return NULL; - current_page = (queue->queue_pages)[q_offset >> EHCA_PAGESHIFT]; - return ¤t_page->entries[q_offset & (EHCA_PAGESIZE - 1)]; -} - -/* - * return current Queue Entry - * returns address (kv) of Queue Entry - */ -static inline void *ipz_qeit_get(struct ipz_queue *queue) -{ - return ipz_qeit_calc(queue, queue->current_q_offset); -} - -/* - * return current Queue Page , increment Queue Page iterator from - * page to page in struct ipz_queue, last increment will return 0! and - * NOT wrap - * returns address (kv) of Queue Page - * warning don't use in parallel with ipz_QE_get_inc() - */ -void *ipz_qpageit_get_inc(struct ipz_queue *queue); - -/* - * return current Queue Entry, increment Queue Entry iterator by one - * step in struct ipz_queue, will wrap in ringbuffer - * returns address (kv) of Queue Entry BEFORE increment - * warning don't use in parallel with ipz_qpageit_get_inc() - */ -static inline void *ipz_qeit_get_inc(struct ipz_queue *queue) -{ - void *ret = ipz_qeit_get(queue); - queue->current_q_offset += queue->qe_size; - if (queue->current_q_offset >= queue->queue_length) { - queue->current_q_offset = 0; - /* toggle the valid flag */ - queue->toggle_state = (~queue->toggle_state) & 1; - } - - return ret; -} - -/* - * return a bool indicating whether current Queue Entry is valid - */ -static inline int ipz_qeit_is_valid(struct ipz_queue *queue) -{ - struct ehca_cqe *cqe = ipz_qeit_get(queue); - return ((cqe->cqe_flags >> 7) == (queue->toggle_state & 1)); -} - -/* - * return current Queue Entry, increment Queue Entry iterator by one - * step in struct ipz_queue, will wrap in ringbuffer - * returns address (kv) of Queue Entry BEFORE increment - * returns 0 and does not increment, if wrong valid state - * warning don't use in parallel with ipz_qpageit_get_inc() - */ -static inline void *ipz_qeit_get_inc_valid(struct ipz_queue *queue) -{ - return ipz_qeit_is_valid(queue) ? ipz_qeit_get_inc(queue) : NULL; -} - -/* - * returns and resets Queue Entry iterator - * returns address (kv) of first Queue Entry - */ -static inline void *ipz_qeit_reset(struct ipz_queue *queue) -{ - queue->current_q_offset = 0; - return ipz_qeit_get(queue); -} - -/* - * return the q_offset corresponding to an absolute address - */ -int ipz_queue_abs_to_offset(struct ipz_queue *queue, u64 addr, u64 *q_offset); - -/* - * return the next queue offset. don't modify the queue. - */ -static inline u64 ipz_queue_advance_offset(struct ipz_queue *queue, u64 offset) -{ - offset += queue->qe_size; - if (offset >= queue->queue_length) offset = 0; - return offset; -} - -/* struct generic page table */ -struct ipz_pt { - u64 entries[EHCA_PT_ENTRIES]; -}; - -/* struct page table for a queue, only to be used in pf */ -struct ipz_qpt { - /* queue page tables (kv), use u64 because we know the element length */ - u64 *qpts; - u32 n_qpts; - u32 n_ptes; /* number of page table entries */ - u64 *current_pte_addr; -}; - -/* - * constructor for a ipz_queue_t, placement new for ipz_queue_t, - * new for all dependent datastructors - * all QP Tables are the same - * flow: - * allocate+pin queue - * see ipz_qpt_ctor() - * returns true if ok, false if out of memory - */ -int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue, - const u32 nr_of_pages, const u32 pagesize, - const u32 qe_size, const u32 nr_of_sg, - int is_small); - -/* - * destructor for a ipz_queue_t - * -# free queue - * see ipz_queue_ctor() - * returns true if ok, false if queue was NULL-ptr of free failed - */ -int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue); - -/* - * constructor for a ipz_qpt_t, - * placement new for struct ipz_queue, new for all dependent datastructors - * all QP Tables are the same, - * flow: - * -# allocate+pin queue - * -# initialise ptcb - * -# allocate+pin PTs - * -# link PTs to a ring, according to HCA Arch, set bit62 id needed - * -# the ring must have room for exactly nr_of_PTEs - * see ipz_qpt_ctor() - */ -void ipz_qpt_ctor(struct ipz_qpt *qpt, - const u32 nr_of_qes, - const u32 pagesize, - const u32 qe_size, - const u8 lowbyte, const u8 toggle, - u32 * act_nr_of_QEs, u32 * act_nr_of_pages); - -/* - * return current Queue Entry, increment Queue Entry iterator by one - * step in struct ipz_queue, will wrap in ringbuffer - * returns address (kv) of Queue Entry BEFORE increment - * warning don't use in parallel with ipz_qpageit_get_inc() - * warning unpredictable results may occur if steps>act_nr_of_queue_entries - * fix EQ page problems - */ -void *ipz_qeit_eq_get_inc(struct ipz_queue *queue); - -/* - * return current Event Queue Entry, increment Queue Entry iterator - * by one step in struct ipz_queue if valid, will wrap in ringbuffer - * returns address (kv) of Queue Entry BEFORE increment - * returns 0 and does not increment, if wrong valid state - * warning don't use in parallel with ipz_queue_QPageit_get_inc() - * warning unpredictable results may occur if steps>act_nr_of_queue_entries - */ -static inline void *ipz_eqit_eq_get_inc_valid(struct ipz_queue *queue) -{ - void *ret = ipz_qeit_get(queue); - u32 qe = *(u8 *)ret; - if ((qe >> 7) != (queue->toggle_state & 1)) - return NULL; - ipz_qeit_eq_get_inc(queue); /* this is a good one */ - return ret; -} - -static inline void *ipz_eqit_eq_peek_valid(struct ipz_queue *queue) -{ - void *ret = ipz_qeit_get(queue); - u32 qe = *(u8 *)ret; - if ((qe >> 7) != (queue->toggle_state & 1)) - return NULL; - return ret; -} - -/* returns address (GX) of first queue entry */ -static inline u64 ipz_qpt_get_firstpage(struct ipz_qpt *qpt) -{ - return be64_to_cpu(qpt->qpts[0]); -} - -/* returns address (kv) of first page of queue page table */ -static inline void *ipz_qpt_get_qpt(struct ipz_qpt *qpt) -{ - return qpt->qpts; -} - -#endif /* __IPZ_PT_FN_H__ */ -- cgit v1.2.3 From b85d9905a7ca128f24e3a4e60ff2a1b0cd58ae7c Mon Sep 17 00:00:00 2001 From: Doug Ledford Date: Wed, 3 Feb 2016 11:10:58 -0500 Subject: staging/rdma: remove deprecated ipath driver This driver was moved to staging for eventual deletion. Time to complete that task. Signed-off-by: Doug Ledford --- drivers/staging/rdma/Kconfig | 2 - drivers/staging/rdma/Makefile | 1 - drivers/staging/rdma/ipath/Kconfig | 16 - drivers/staging/rdma/ipath/Makefile | 37 - drivers/staging/rdma/ipath/TODO | 5 - drivers/staging/rdma/ipath/ipath_common.h | 851 -------- drivers/staging/rdma/ipath/ipath_cq.c | 483 ---- drivers/staging/rdma/ipath/ipath_debug.h | 99 - drivers/staging/rdma/ipath/ipath_diag.c | 551 ----- drivers/staging/rdma/ipath/ipath_dma.c | 179 -- drivers/staging/rdma/ipath/ipath_driver.c | 2784 ------------------------ drivers/staging/rdma/ipath/ipath_eeprom.c | 1183 ---------- drivers/staging/rdma/ipath/ipath_file_ops.c | 2619 ---------------------- drivers/staging/rdma/ipath/ipath_fs.c | 415 ---- drivers/staging/rdma/ipath/ipath_iba6110.c | 1939 ----------------- drivers/staging/rdma/ipath/ipath_init_chip.c | 1062 --------- drivers/staging/rdma/ipath/ipath_intr.c | 1271 ----------- drivers/staging/rdma/ipath/ipath_kernel.h | 1374 ------------ drivers/staging/rdma/ipath/ipath_keys.c | 270 --- drivers/staging/rdma/ipath/ipath_mad.c | 1521 ------------- drivers/staging/rdma/ipath/ipath_mmap.c | 174 -- drivers/staging/rdma/ipath/ipath_mr.c | 370 ---- drivers/staging/rdma/ipath/ipath_qp.c | 1079 --------- drivers/staging/rdma/ipath/ipath_rc.c | 1969 ----------------- drivers/staging/rdma/ipath/ipath_registers.h | 512 ----- drivers/staging/rdma/ipath/ipath_ruc.c | 733 ------- drivers/staging/rdma/ipath/ipath_sdma.c | 818 ------- drivers/staging/rdma/ipath/ipath_srq.c | 380 ---- drivers/staging/rdma/ipath/ipath_stats.c | 347 --- drivers/staging/rdma/ipath/ipath_sysfs.c | 1237 ----------- drivers/staging/rdma/ipath/ipath_uc.c | 547 ----- drivers/staging/rdma/ipath/ipath_ud.c | 579 ----- drivers/staging/rdma/ipath/ipath_user_pages.c | 228 -- drivers/staging/rdma/ipath/ipath_user_sdma.c | 874 -------- drivers/staging/rdma/ipath/ipath_user_sdma.h | 52 - drivers/staging/rdma/ipath/ipath_verbs.c | 2376 -------------------- drivers/staging/rdma/ipath/ipath_verbs.h | 941 -------- drivers/staging/rdma/ipath/ipath_verbs_mcast.c | 363 --- drivers/staging/rdma/ipath/ipath_wc_ppc64.c | 49 - drivers/staging/rdma/ipath/ipath_wc_x86_64.c | 144 -- 40 files changed, 30434 deletions(-) delete mode 100644 drivers/staging/rdma/ipath/Kconfig delete mode 100644 drivers/staging/rdma/ipath/Makefile delete mode 100644 drivers/staging/rdma/ipath/TODO delete mode 100644 drivers/staging/rdma/ipath/ipath_common.h delete mode 100644 drivers/staging/rdma/ipath/ipath_cq.c delete mode 100644 drivers/staging/rdma/ipath/ipath_debug.h delete mode 100644 drivers/staging/rdma/ipath/ipath_diag.c delete mode 100644 drivers/staging/rdma/ipath/ipath_dma.c delete mode 100644 drivers/staging/rdma/ipath/ipath_driver.c delete mode 100644 drivers/staging/rdma/ipath/ipath_eeprom.c delete mode 100644 drivers/staging/rdma/ipath/ipath_file_ops.c delete mode 100644 drivers/staging/rdma/ipath/ipath_fs.c delete mode 100644 drivers/staging/rdma/ipath/ipath_iba6110.c delete mode 100644 drivers/staging/rdma/ipath/ipath_init_chip.c delete mode 100644 drivers/staging/rdma/ipath/ipath_intr.c delete mode 100644 drivers/staging/rdma/ipath/ipath_kernel.h delete mode 100644 drivers/staging/rdma/ipath/ipath_keys.c delete mode 100644 drivers/staging/rdma/ipath/ipath_mad.c delete mode 100644 drivers/staging/rdma/ipath/ipath_mmap.c delete mode 100644 drivers/staging/rdma/ipath/ipath_mr.c delete mode 100644 drivers/staging/rdma/ipath/ipath_qp.c delete mode 100644 drivers/staging/rdma/ipath/ipath_rc.c delete mode 100644 drivers/staging/rdma/ipath/ipath_registers.h delete mode 100644 drivers/staging/rdma/ipath/ipath_ruc.c delete mode 100644 drivers/staging/rdma/ipath/ipath_sdma.c delete mode 100644 drivers/staging/rdma/ipath/ipath_srq.c delete mode 100644 drivers/staging/rdma/ipath/ipath_stats.c delete mode 100644 drivers/staging/rdma/ipath/ipath_sysfs.c delete mode 100644 drivers/staging/rdma/ipath/ipath_uc.c delete mode 100644 drivers/staging/rdma/ipath/ipath_ud.c delete mode 100644 drivers/staging/rdma/ipath/ipath_user_pages.c delete mode 100644 drivers/staging/rdma/ipath/ipath_user_sdma.c delete mode 100644 drivers/staging/rdma/ipath/ipath_user_sdma.h delete mode 100644 drivers/staging/rdma/ipath/ipath_verbs.c delete mode 100644 drivers/staging/rdma/ipath/ipath_verbs.h delete mode 100644 drivers/staging/rdma/ipath/ipath_verbs_mcast.c delete mode 100644 drivers/staging/rdma/ipath/ipath_wc_ppc64.c delete mode 100644 drivers/staging/rdma/ipath/ipath_wc_x86_64.c (limited to 'drivers') diff --git a/drivers/staging/rdma/Kconfig b/drivers/staging/rdma/Kconfig index 8a0be6961d7a..f1f3ecadf0fb 100644 --- a/drivers/staging/rdma/Kconfig +++ b/drivers/staging/rdma/Kconfig @@ -24,6 +24,4 @@ if STAGING_RDMA source "drivers/staging/rdma/hfi1/Kconfig" -source "drivers/staging/rdma/ipath/Kconfig" - endif diff --git a/drivers/staging/rdma/Makefile b/drivers/staging/rdma/Makefile index 08e1919c819e..8c7fc1de48a7 100644 --- a/drivers/staging/rdma/Makefile +++ b/drivers/staging/rdma/Makefile @@ -1,3 +1,2 @@ # Entries for RDMA_STAGING tree obj-$(CONFIG_INFINIBAND_HFI1) += hfi1/ -obj-$(CONFIG_INFINIBAND_IPATH) += ipath/ diff --git a/drivers/staging/rdma/ipath/Kconfig b/drivers/staging/rdma/ipath/Kconfig deleted file mode 100644 index 041ce0634968..000000000000 --- a/drivers/staging/rdma/ipath/Kconfig +++ /dev/null @@ -1,16 +0,0 @@ -config INFINIBAND_IPATH - tristate "QLogic HTX HCA support" - depends on 64BIT && NET && HT_IRQ - ---help--- - This is a driver for the deprecated QLogic Hyper-Transport - IB host channel adapter (model QHT7140), - including InfiniBand verbs support. This driver allows these - devices to be used with both kernel upper level protocols such - as IP-over-InfiniBand as well as with userspace applications - (in conjunction with InfiniBand userspace access). - For QLogic PCIe QLE based cards, use the QIB driver instead. - - If you have this hardware you will need to boot with PAT disabled - on your x86-64 systems, use the nopat kernel parameter. - - Note that this driver will soon be removed entirely from the kernel. diff --git a/drivers/staging/rdma/ipath/Makefile b/drivers/staging/rdma/ipath/Makefile deleted file mode 100644 index 4496f2820c92..000000000000 --- a/drivers/staging/rdma/ipath/Makefile +++ /dev/null @@ -1,37 +0,0 @@ -ccflags-y := -DIPATH_IDSTR='"QLogic kernel.org driver"' \ - -DIPATH_KERN_TYPE=0 - -obj-$(CONFIG_INFINIBAND_IPATH) += ib_ipath.o - -ib_ipath-y := \ - ipath_cq.o \ - ipath_diag.o \ - ipath_dma.o \ - ipath_driver.o \ - ipath_eeprom.o \ - ipath_file_ops.o \ - ipath_fs.o \ - ipath_init_chip.o \ - ipath_intr.o \ - ipath_keys.o \ - ipath_mad.o \ - ipath_mmap.o \ - ipath_mr.o \ - ipath_qp.o \ - ipath_rc.o \ - ipath_ruc.o \ - ipath_sdma.o \ - ipath_srq.o \ - ipath_stats.o \ - ipath_sysfs.o \ - ipath_uc.o \ - ipath_ud.o \ - ipath_user_pages.o \ - ipath_user_sdma.o \ - ipath_verbs_mcast.o \ - ipath_verbs.o - -ib_ipath-$(CONFIG_HT_IRQ) += ipath_iba6110.o - -ib_ipath-$(CONFIG_X86_64) += ipath_wc_x86_64.o -ib_ipath-$(CONFIG_PPC64) += ipath_wc_ppc64.o diff --git a/drivers/staging/rdma/ipath/TODO b/drivers/staging/rdma/ipath/TODO deleted file mode 100644 index cb00158d64c8..000000000000 --- a/drivers/staging/rdma/ipath/TODO +++ /dev/null @@ -1,5 +0,0 @@ -The ipath driver has been moved to staging in preparation for its removal in a -few releases. The driver will be deleted during the 4.6 merge window. - -Contact Dennis Dalessandro and -Cc: linux-rdma@vger.kernel.org diff --git a/drivers/staging/rdma/ipath/ipath_common.h b/drivers/staging/rdma/ipath/ipath_common.h deleted file mode 100644 index 28cfe97cf1e9..000000000000 --- a/drivers/staging/rdma/ipath/ipath_common.h +++ /dev/null @@ -1,851 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _IPATH_COMMON_H -#define _IPATH_COMMON_H - -/* - * This file contains defines, structures, etc. that are used - * to communicate between kernel and user code. - */ - - -/* This is the IEEE-assigned OUI for QLogic Inc. InfiniPath */ -#define IPATH_SRC_OUI_1 0x00 -#define IPATH_SRC_OUI_2 0x11 -#define IPATH_SRC_OUI_3 0x75 - -/* version of protocol header (known to chip also). In the long run, - * we should be able to generate and accept a range of version numbers; - * for now we only accept one, and it's compiled in. - */ -#define IPS_PROTO_VERSION 2 - -/* - * These are compile time constants that you may want to enable or disable - * if you are trying to debug problems with code or performance. - * IPATH_VERBOSE_TRACING define as 1 if you want additional tracing in - * fastpath code - * IPATH_TRACE_REGWRITES define as 1 if you want register writes to be - * traced in faspath code - * _IPATH_TRACING define as 0 if you want to remove all tracing in a - * compilation unit - * _IPATH_DEBUGGING define as 0 if you want to remove debug prints - */ - -/* - * The value in the BTH QP field that InfiniPath uses to differentiate - * an infinipath protocol IB packet vs standard IB transport - */ -#define IPATH_KD_QP 0x656b79 - -/* - * valid states passed to ipath_set_linkstate() user call - */ -#define IPATH_IB_LINKDOWN 0 -#define IPATH_IB_LINKARM 1 -#define IPATH_IB_LINKACTIVE 2 -#define IPATH_IB_LINKDOWN_ONLY 3 -#define IPATH_IB_LINKDOWN_SLEEP 4 -#define IPATH_IB_LINKDOWN_DISABLE 5 -#define IPATH_IB_LINK_LOOPBACK 6 /* enable local loopback */ -#define IPATH_IB_LINK_EXTERNAL 7 /* normal, disable local loopback */ -#define IPATH_IB_LINK_NO_HRTBT 8 /* disable Heartbeat, e.g. for loopback */ -#define IPATH_IB_LINK_HRTBT 9 /* enable heartbeat, normal, non-loopback */ - -/* - * These 3 values (SDR and DDR may be ORed for auto-speed - * negotiation) are used for the 3rd argument to path_f_set_ib_cfg - * with cmd IPATH_IB_CFG_SPD_ENB, by direct calls or via sysfs. They - * are also the the possible values for ipath_link_speed_enabled and active - * The values were chosen to match values used within the IB spec. - */ -#define IPATH_IB_SDR 1 -#define IPATH_IB_DDR 2 - -/* - * stats maintained by the driver. For now, at least, this is global - * to all minor devices. - */ -struct infinipath_stats { - /* number of interrupts taken */ - __u64 sps_ints; - /* number of interrupts for errors */ - __u64 sps_errints; - /* number of errors from chip (not incl. packet errors or CRC) */ - __u64 sps_errs; - /* number of packet errors from chip other than CRC */ - __u64 sps_pkterrs; - /* number of packets with CRC errors (ICRC and VCRC) */ - __u64 sps_crcerrs; - /* number of hardware errors reported (parity, etc.) */ - __u64 sps_hwerrs; - /* number of times IB link changed state unexpectedly */ - __u64 sps_iblink; - __u64 sps_unused; /* was fastrcvint, no longer implemented */ - /* number of kernel (port0) packets received */ - __u64 sps_port0pkts; - /* number of "ethernet" packets sent by driver */ - __u64 sps_ether_spkts; - /* number of "ethernet" packets received by driver */ - __u64 sps_ether_rpkts; - /* number of SMA packets sent by driver. Obsolete. */ - __u64 sps_sma_spkts; - /* number of SMA packets received by driver. Obsolete. */ - __u64 sps_sma_rpkts; - /* number of times all ports rcvhdrq was full and packet dropped */ - __u64 sps_hdrqfull; - /* number of times all ports egrtid was full and packet dropped */ - __u64 sps_etidfull; - /* - * number of times we tried to send from driver, but no pio buffers - * avail - */ - __u64 sps_nopiobufs; - /* number of ports currently open */ - __u64 sps_ports; - /* list of pkeys (other than default) accepted (0 means not set) */ - __u16 sps_pkeys[4]; - __u16 sps_unused16[4]; /* available; maintaining compatible layout */ - /* number of user ports per chip (not IB ports) */ - __u32 sps_nports; - /* not our interrupt, or already handled */ - __u32 sps_nullintr; - /* max number of packets handled per receive call */ - __u32 sps_maxpkts_call; - /* avg number of packets handled per receive call */ - __u32 sps_avgpkts_call; - /* total number of pages locked */ - __u64 sps_pagelocks; - /* total number of pages unlocked */ - __u64 sps_pageunlocks; - /* - * Number of packets dropped in kernel other than errors (ether - * packets if ipath not configured, etc.) - */ - __u64 sps_krdrops; - __u64 sps_txeparity; /* PIO buffer parity error, recovered */ - /* pad for future growth */ - __u64 __sps_pad[45]; -}; - -/* - * These are the status bits readable (in ascii form, 64bit value) - * from the "status" sysfs file. - */ -#define IPATH_STATUS_INITTED 0x1 /* basic initialization done */ -#define IPATH_STATUS_DISABLED 0x2 /* hardware disabled */ -/* Device has been disabled via admin request */ -#define IPATH_STATUS_ADMIN_DISABLED 0x4 -/* Chip has been found and initted */ -#define IPATH_STATUS_CHIP_PRESENT 0x20 -/* IB link is at ACTIVE, usable for data traffic */ -#define IPATH_STATUS_IB_READY 0x40 -/* link is configured, LID, MTU, etc. have been set */ -#define IPATH_STATUS_IB_CONF 0x80 -/* no link established, probably no cable */ -#define IPATH_STATUS_IB_NOCABLE 0x100 -/* A Fatal hardware error has occurred. */ -#define IPATH_STATUS_HWERROR 0x200 - -/* - * The list of usermode accessible registers. Also see Reg_* later in file. - */ -typedef enum _ipath_ureg { - /* (RO) DMA RcvHdr to be used next. */ - ur_rcvhdrtail = 0, - /* (RW) RcvHdr entry to be processed next by host. */ - ur_rcvhdrhead = 1, - /* (RO) Index of next Eager index to use. */ - ur_rcvegrindextail = 2, - /* (RW) Eager TID to be processed next */ - ur_rcvegrindexhead = 3, - /* For internal use only; max register number. */ - _IPATH_UregMax -} ipath_ureg; - -/* bit values for spi_runtime_flags */ -#define IPATH_RUNTIME_HT 0x1 -#define IPATH_RUNTIME_PCIE 0x2 -#define IPATH_RUNTIME_FORCE_WC_ORDER 0x4 -#define IPATH_RUNTIME_RCVHDR_COPY 0x8 -#define IPATH_RUNTIME_MASTER 0x10 -#define IPATH_RUNTIME_NODMA_RTAIL 0x80 -#define IPATH_RUNTIME_SDMA 0x200 -#define IPATH_RUNTIME_FORCE_PIOAVAIL 0x400 -#define IPATH_RUNTIME_PIO_REGSWAPPED 0x800 - -/* - * This structure is returned by ipath_userinit() immediately after - * open to get implementation-specific info, and info specific to this - * instance. - * - * This struct must have explict pad fields where type sizes - * may result in different alignments between 32 and 64 bit - * programs, since the 64 bit * bit kernel requires the user code - * to have matching offsets - */ -struct ipath_base_info { - /* version of hardware, for feature checking. */ - __u32 spi_hw_version; - /* version of software, for feature checking. */ - __u32 spi_sw_version; - /* InfiniPath port assigned, goes into sent packets */ - __u16 spi_port; - __u16 spi_subport; - /* - * IB MTU, packets IB data must be less than this. - * The MTU is in bytes, and will be a multiple of 4 bytes. - */ - __u32 spi_mtu; - /* - * Size of a PIO buffer. Any given packet's total size must be less - * than this (in words). Included is the starting control word, so - * if 513 is returned, then total pkt size is 512 words or less. - */ - __u32 spi_piosize; - /* size of the TID cache in infinipath, in entries */ - __u32 spi_tidcnt; - /* size of the TID Eager list in infinipath, in entries */ - __u32 spi_tidegrcnt; - /* size of a single receive header queue entry in words. */ - __u32 spi_rcvhdrent_size; - /* - * Count of receive header queue entries allocated. - * This may be less than the spu_rcvhdrcnt passed in!. - */ - __u32 spi_rcvhdr_cnt; - - /* per-chip and other runtime features bitmap (IPATH_RUNTIME_*) */ - __u32 spi_runtime_flags; - - /* address where receive buffer queue is mapped into */ - __u64 spi_rcvhdr_base; - - /* user program. */ - - /* base address of eager TID receive buffers. */ - __u64 spi_rcv_egrbufs; - - /* Allocated by initialization code, not by protocol. */ - - /* - * Size of each TID buffer in host memory, starting at - * spi_rcv_egrbufs. The buffers are virtually contiguous. - */ - __u32 spi_rcv_egrbufsize; - /* - * The special QP (queue pair) value that identifies an infinipath - * protocol packet from standard IB packets. More, probably much - * more, to be added. - */ - __u32 spi_qpair; - - /* - * User register base for init code, not to be used directly by - * protocol or applications. - */ - __u64 __spi_uregbase; - /* - * Maximum buffer size in bytes that can be used in a single TID - * entry (assuming the buffer is aligned to this boundary). This is - * the minimum of what the hardware and software support Guaranteed - * to be a power of 2. - */ - __u32 spi_tid_maxsize; - /* - * alignment of each pio send buffer (byte count - * to add to spi_piobufbase to get to second buffer) - */ - __u32 spi_pioalign; - /* - * The index of the first pio buffer available to this process; - * needed to do lookup in spi_pioavailaddr; not added to - * spi_piobufbase. - */ - __u32 spi_pioindex; - /* number of buffers mapped for this process */ - __u32 spi_piocnt; - - /* - * Base address of writeonly pio buffers for this process. - * Each buffer has spi_piosize words, and is aligned on spi_pioalign - * boundaries. spi_piocnt buffers are mapped from this address - */ - __u64 spi_piobufbase; - - /* - * Base address of readonly memory copy of the pioavail registers. - * There are 2 bits for each buffer. - */ - __u64 spi_pioavailaddr; - - /* - * Address where driver updates a copy of the interface and driver - * status (IPATH_STATUS_*) as a 64 bit value. It's followed by a - * string indicating hardware error, if there was one. - */ - __u64 spi_status; - - /* number of chip ports available to user processes */ - __u32 spi_nports; - /* unit number of chip we are using */ - __u32 spi_unit; - /* num bufs in each contiguous set */ - __u32 spi_rcv_egrperchunk; - /* size in bytes of each contiguous set */ - __u32 spi_rcv_egrchunksize; - /* total size of mmap to cover full rcvegrbuffers */ - __u32 spi_rcv_egrbuftotlen; - __u32 spi_filler_for_align; - /* address of readonly memory copy of the rcvhdrq tail register. */ - __u64 spi_rcvhdr_tailaddr; - - /* shared memory pages for subports if port is shared */ - __u64 spi_subport_uregbase; - __u64 spi_subport_rcvegrbuf; - __u64 spi_subport_rcvhdr_base; - - /* shared memory page for hardware port if it is shared */ - __u64 spi_port_uregbase; - __u64 spi_port_rcvegrbuf; - __u64 spi_port_rcvhdr_base; - __u64 spi_port_rcvhdr_tailaddr; - -} __attribute__ ((aligned(8))); - - -/* - * This version number is given to the driver by the user code during - * initialization in the spu_userversion field of ipath_user_info, so - * the driver can check for compatibility with user code. - * - * The major version changes when data structures - * change in an incompatible way. The driver must be the same or higher - * for initialization to succeed. In some cases, a higher version - * driver will not interoperate with older software, and initialization - * will return an error. - */ -#define IPATH_USER_SWMAJOR 1 - -/* - * Minor version differences are always compatible - * a within a major version, however if user software is larger - * than driver software, some new features and/or structure fields - * may not be implemented; the user code must deal with this if it - * cares, or it must abort after initialization reports the difference. - */ -#define IPATH_USER_SWMINOR 6 - -#define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR) - -#define IPATH_KERN_TYPE 0 - -/* - * Similarly, this is the kernel version going back to the user. It's - * slightly different, in that we want to tell if the driver was built as - * part of a QLogic release, or from the driver from openfabrics.org, - * kernel.org, or a standard distribution, for support reasons. - * The high bit is 0 for non-QLogic and 1 for QLogic-built/supplied. - * - * It's returned by the driver to the user code during initialization in the - * spi_sw_version field of ipath_base_info, so the user code can in turn - * check for compatibility with the kernel. -*/ -#define IPATH_KERN_SWVERSION ((IPATH_KERN_TYPE<<31) | IPATH_USER_SWVERSION) - -/* - * This structure is passed to ipath_userinit() to tell the driver where - * user code buffers are, sizes, etc. The offsets and sizes of the - * fields must remain unchanged, for binary compatibility. It can - * be extended, if userversion is changed so user code can tell, if needed - */ -struct ipath_user_info { - /* - * version of user software, to detect compatibility issues. - * Should be set to IPATH_USER_SWVERSION. - */ - __u32 spu_userversion; - - /* desired number of receive header queue entries */ - __u32 spu_rcvhdrcnt; - - /* size of struct base_info to write to */ - __u32 spu_base_info_size; - - /* - * number of words in KD protocol header - * This tells InfiniPath how many words to copy to rcvhdrq. If 0, - * kernel uses a default. Once set, attempts to set any other value - * are an error (EAGAIN) until driver is reloaded. - */ - __u32 spu_rcvhdrsize; - - /* - * If two or more processes wish to share a port, each process - * must set the spu_subport_cnt and spu_subport_id to the same - * values. The only restriction on the spu_subport_id is that - * it be unique for a given node. - */ - __u16 spu_subport_cnt; - __u16 spu_subport_id; - - __u32 spu_unused; /* kept for compatible layout */ - - /* - * address of struct base_info to write to - */ - __u64 spu_base_info; - -} __attribute__ ((aligned(8))); - -/* User commands. */ - -#define IPATH_CMD_MIN 16 - -#define __IPATH_CMD_USER_INIT 16 /* old set up userspace (for old user code) */ -#define IPATH_CMD_PORT_INFO 17 /* find out what resources we got */ -#define IPATH_CMD_RECV_CTRL 18 /* control receipt of packets */ -#define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */ -#define IPATH_CMD_TID_FREE 20 /* free expected TID entries */ -#define IPATH_CMD_SET_PART_KEY 21 /* add partition key */ -#define __IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes (for old user code) */ -#define IPATH_CMD_ASSIGN_PORT 23 /* allocate HCA and port */ -#define IPATH_CMD_USER_INIT 24 /* set up userspace */ -#define IPATH_CMD_UNUSED_1 25 -#define IPATH_CMD_UNUSED_2 26 -#define IPATH_CMD_PIOAVAILUPD 27 /* force an update of PIOAvail reg */ -#define IPATH_CMD_POLL_TYPE 28 /* set the kind of polling we want */ -#define IPATH_CMD_ARMLAUNCH_CTRL 29 /* armlaunch detection control */ -/* 30 is unused */ -#define IPATH_CMD_SDMA_INFLIGHT 31 /* sdma inflight counter request */ -#define IPATH_CMD_SDMA_COMPLETE 32 /* sdma completion counter request */ - -/* - * Poll types - */ -#define IPATH_POLL_TYPE_URGENT 0x01 -#define IPATH_POLL_TYPE_OVERFLOW 0x02 - -struct ipath_port_info { - __u32 num_active; /* number of active units */ - __u32 unit; /* unit (chip) assigned to caller */ - __u16 port; /* port on unit assigned to caller */ - __u16 subport; /* subport on unit assigned to caller */ - __u16 num_ports; /* number of ports available on unit */ - __u16 num_subports; /* number of subports opened on port */ -}; - -struct ipath_tid_info { - __u32 tidcnt; - /* make structure same size in 32 and 64 bit */ - __u32 tid__unused; - /* virtual address of first page in transfer */ - __u64 tidvaddr; - /* pointer (same size 32/64 bit) to __u16 tid array */ - __u64 tidlist; - - /* - * pointer (same size 32/64 bit) to bitmap of TIDs used - * for this call; checked for being large enough at open - */ - __u64 tidmap; -}; - -struct ipath_cmd { - __u32 type; /* command type */ - union { - struct ipath_tid_info tid_info; - struct ipath_user_info user_info; - - /* - * address in userspace where we should put the sdma - * inflight counter - */ - __u64 sdma_inflight; - /* - * address in userspace where we should put the sdma - * completion counter - */ - __u64 sdma_complete; - /* address in userspace of struct ipath_port_info to - write result to */ - __u64 port_info; - /* enable/disable receipt of packets */ - __u32 recv_ctrl; - /* enable/disable armlaunch errors (non-zero to enable) */ - __u32 armlaunch_ctrl; - /* partition key to set */ - __u16 part_key; - /* user address of __u32 bitmask of active slaves */ - __u64 slave_mask_addr; - /* type of polling we want */ - __u16 poll_type; - } cmd; -}; - -struct ipath_iovec { - /* Pointer to data, but same size 32 and 64 bit */ - __u64 iov_base; - - /* - * Length of data; don't need 64 bits, but want - * ipath_sendpkt to remain same size as before 32 bit changes, so... - */ - __u64 iov_len; -}; - -/* - * Describes a single packet for send. Each packet can have one or more - * buffers, but the total length (exclusive of IB headers) must be less - * than the MTU, and if using the PIO method, entire packet length, - * including IB headers, must be less than the ipath_piosize value (words). - * Use of this necessitates including sys/uio.h - */ -struct __ipath_sendpkt { - __u32 sps_flags; /* flags for packet (TBD) */ - __u32 sps_cnt; /* number of entries to use in sps_iov */ - /* array of iov's describing packet. TEMPORARY */ - struct ipath_iovec sps_iov[4]; -}; - -/* - * diagnostics can send a packet by "writing" one of the following - * two structs to diag data special file - * The first is the legacy version for backward compatibility - */ -struct ipath_diag_pkt { - __u32 unit; - __u64 data; - __u32 len; -}; - -/* The second diag_pkt struct is the expanded version that allows - * more control over the packet, specifically, by allowing a custom - * pbc (+ static rate) qword, so that special modes and deliberate - * changes to CRCs can be used. The elements were also re-ordered - * for better alignment and to avoid padding issues. - */ -struct ipath_diag_xpkt { - __u64 data; - __u64 pbc_wd; - __u32 unit; - __u32 len; -}; - -/* - * Data layout in I2C flash (for GUID, etc.) - * All fields are little-endian binary unless otherwise stated - */ -#define IPATH_FLASH_VERSION 2 -struct ipath_flash { - /* flash layout version (IPATH_FLASH_VERSION) */ - __u8 if_fversion; - /* checksum protecting if_length bytes */ - __u8 if_csum; - /* - * valid length (in use, protected by if_csum), including - * if_fversion and if_csum themselves) - */ - __u8 if_length; - /* the GUID, in network order */ - __u8 if_guid[8]; - /* number of GUIDs to use, starting from if_guid */ - __u8 if_numguid; - /* the (last 10 characters of) board serial number, in ASCII */ - char if_serial[12]; - /* board mfg date (YYYYMMDD ASCII) */ - char if_mfgdate[8]; - /* last board rework/test date (YYYYMMDD ASCII) */ - char if_testdate[8]; - /* logging of error counts, TBD */ - __u8 if_errcntp[4]; - /* powered on hours, updated at driver unload */ - __u8 if_powerhour[2]; - /* ASCII free-form comment field */ - char if_comment[32]; - /* Backwards compatible prefix for longer QLogic Serial Numbers */ - char if_sprefix[4]; - /* 82 bytes used, min flash size is 128 bytes */ - __u8 if_future[46]; -}; - -/* - * These are the counters implemented in the chip, and are listed in order. - * The InterCaps naming is taken straight from the chip spec. - */ -struct infinipath_counters { - __u64 LBIntCnt; - __u64 LBFlowStallCnt; - __u64 TxSDmaDescCnt; /* was Reserved1 */ - __u64 TxUnsupVLErrCnt; - __u64 TxDataPktCnt; - __u64 TxFlowPktCnt; - __u64 TxDwordCnt; - __u64 TxLenErrCnt; - __u64 TxMaxMinLenErrCnt; - __u64 TxUnderrunCnt; - __u64 TxFlowStallCnt; - __u64 TxDroppedPktCnt; - __u64 RxDroppedPktCnt; - __u64 RxDataPktCnt; - __u64 RxFlowPktCnt; - __u64 RxDwordCnt; - __u64 RxLenErrCnt; - __u64 RxMaxMinLenErrCnt; - __u64 RxICRCErrCnt; - __u64 RxVCRCErrCnt; - __u64 RxFlowCtrlErrCnt; - __u64 RxBadFormatCnt; - __u64 RxLinkProblemCnt; - __u64 RxEBPCnt; - __u64 RxLPCRCErrCnt; - __u64 RxBufOvflCnt; - __u64 RxTIDFullErrCnt; - __u64 RxTIDValidErrCnt; - __u64 RxPKeyMismatchCnt; - __u64 RxP0HdrEgrOvflCnt; - __u64 RxP1HdrEgrOvflCnt; - __u64 RxP2HdrEgrOvflCnt; - __u64 RxP3HdrEgrOvflCnt; - __u64 RxP4HdrEgrOvflCnt; - __u64 RxP5HdrEgrOvflCnt; - __u64 RxP6HdrEgrOvflCnt; - __u64 RxP7HdrEgrOvflCnt; - __u64 RxP8HdrEgrOvflCnt; - __u64 RxP9HdrEgrOvflCnt; /* was Reserved6 */ - __u64 RxP10HdrEgrOvflCnt; /* was Reserved7 */ - __u64 RxP11HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 RxP12HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 RxP13HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 RxP14HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 RxP15HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 RxP16HdrEgrOvflCnt; /* new for IBA7220 */ - __u64 IBStatusChangeCnt; - __u64 IBLinkErrRecoveryCnt; - __u64 IBLinkDownedCnt; - __u64 IBSymbolErrCnt; - /* The following are new for IBA7220 */ - __u64 RxVL15DroppedPktCnt; - __u64 RxOtherLocalPhyErrCnt; - __u64 PcieRetryBufDiagQwordCnt; - __u64 ExcessBufferOvflCnt; - __u64 LocalLinkIntegrityErrCnt; - __u64 RxVlErrCnt; - __u64 RxDlidFltrCnt; -}; - -/* - * The next set of defines are for packet headers, and chip register - * and memory bits that are visible to and/or used by user-mode software - * The other bits that are used only by the driver or diags are in - * ipath_registers.h - */ - -/* RcvHdrFlags bits */ -#define INFINIPATH_RHF_LENGTH_MASK 0x7FF -#define INFINIPATH_RHF_LENGTH_SHIFT 0 -#define INFINIPATH_RHF_RCVTYPE_MASK 0x7 -#define INFINIPATH_RHF_RCVTYPE_SHIFT 11 -#define INFINIPATH_RHF_EGRINDEX_MASK 0xFFF -#define INFINIPATH_RHF_EGRINDEX_SHIFT 16 -#define INFINIPATH_RHF_SEQ_MASK 0xF -#define INFINIPATH_RHF_SEQ_SHIFT 0 -#define INFINIPATH_RHF_HDRQ_OFFSET_MASK 0x7FF -#define INFINIPATH_RHF_HDRQ_OFFSET_SHIFT 4 -#define INFINIPATH_RHF_H_ICRCERR 0x80000000 -#define INFINIPATH_RHF_H_VCRCERR 0x40000000 -#define INFINIPATH_RHF_H_PARITYERR 0x20000000 -#define INFINIPATH_RHF_H_LENERR 0x10000000 -#define INFINIPATH_RHF_H_MTUERR 0x08000000 -#define INFINIPATH_RHF_H_IHDRERR 0x04000000 -#define INFINIPATH_RHF_H_TIDERR 0x02000000 -#define INFINIPATH_RHF_H_MKERR 0x01000000 -#define INFINIPATH_RHF_H_IBERR 0x00800000 -#define INFINIPATH_RHF_H_ERR_MASK 0xFF800000 -#define INFINIPATH_RHF_L_USE_EGR 0x80000000 -#define INFINIPATH_RHF_L_SWA 0x00008000 -#define INFINIPATH_RHF_L_SWB 0x00004000 - -/* infinipath header fields */ -#define INFINIPATH_I_VERS_MASK 0xF -#define INFINIPATH_I_VERS_SHIFT 28 -#define INFINIPATH_I_PORT_MASK 0xF -#define INFINIPATH_I_PORT_SHIFT 24 -#define INFINIPATH_I_TID_MASK 0x7FF -#define INFINIPATH_I_TID_SHIFT 13 -#define INFINIPATH_I_OFFSET_MASK 0x1FFF -#define INFINIPATH_I_OFFSET_SHIFT 0 - -/* K_PktFlags bits */ -#define INFINIPATH_KPF_INTR 0x1 -#define INFINIPATH_KPF_SUBPORT_MASK 0x3 -#define INFINIPATH_KPF_SUBPORT_SHIFT 1 - -#define INFINIPATH_MAX_SUBPORT 4 - -/* SendPIO per-buffer control */ -#define INFINIPATH_SP_TEST 0x40 -#define INFINIPATH_SP_TESTEBP 0x20 -#define INFINIPATH_SP_TRIGGER_SHIFT 15 - -/* SendPIOAvail bits */ -#define INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT 1 -#define INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT 0 - -/* infinipath header format */ -struct ipath_header { - /* - * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset - - * 14 bits before ECO change ~28 Dec 03. After that, Vers 4, - * Port 4, TID 11, offset 13. - */ - __le32 ver_port_tid_offset; - __le16 chksum; - __le16 pkt_flags; -}; - -/* infinipath user message header format. - * This structure contains the first 4 fields common to all protocols - * that employ infinipath. - */ -struct ipath_message_header { - __be16 lrh[4]; - __be32 bth[3]; - /* fields below this point are in host byte order */ - struct ipath_header iph; - __u8 sub_opcode; -}; - -/* infinipath ethernet header format */ -struct ether_header { - __be16 lrh[4]; - __be32 bth[3]; - struct ipath_header iph; - __u8 sub_opcode; - __u8 cmd; - __be16 lid; - __u16 mac[3]; - __u8 frag_num; - __u8 seq_num; - __le32 len; - /* MUST be of word size due to PIO write requirements */ - __le32 csum; - __le16 csum_offset; - __le16 flags; - __u16 first_2_bytes; - __u8 unused[2]; /* currently unused */ -}; - - -/* IB - LRH header consts */ -#define IPATH_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */ -#define IPATH_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */ - -/* misc. */ -#define SIZE_OF_CRC 1 - -#define IPATH_DEFAULT_P_KEY 0xFFFF -#define IPATH_PERMISSIVE_LID 0xFFFF -#define IPATH_AETH_CREDIT_SHIFT 24 -#define IPATH_AETH_CREDIT_MASK 0x1F -#define IPATH_AETH_CREDIT_INVAL 0x1F -#define IPATH_PSN_MASK 0xFFFFFF -#define IPATH_MSN_MASK 0xFFFFFF -#define IPATH_QPN_MASK 0xFFFFFF -#define IPATH_MULTICAST_LID_BASE 0xC000 -#define IPATH_EAGER_TID_ID INFINIPATH_I_TID_MASK -#define IPATH_MULTICAST_QPN 0xFFFFFF - -/* Receive Header Queue: receive type (from infinipath) */ -#define RCVHQ_RCV_TYPE_EXPECTED 0 -#define RCVHQ_RCV_TYPE_EAGER 1 -#define RCVHQ_RCV_TYPE_NON_KD 2 -#define RCVHQ_RCV_TYPE_ERROR 3 - - -/* sub OpCodes - ith4x */ -#define IPATH_ITH4X_OPCODE_ENCAP 0x81 -#define IPATH_ITH4X_OPCODE_LID_ARP 0x82 - -#define IPATH_HEADER_QUEUE_WORDS 9 - -/* functions for extracting fields from rcvhdrq entries for the driver. - */ -static inline __u32 ipath_hdrget_err_flags(const __le32 * rbuf) -{ - return __le32_to_cpu(rbuf[1]) & INFINIPATH_RHF_H_ERR_MASK; -} - -static inline __u32 ipath_hdrget_rcv_type(const __le32 * rbuf) -{ - return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT) - & INFINIPATH_RHF_RCVTYPE_MASK; -} - -static inline __u32 ipath_hdrget_length_in_bytes(const __le32 * rbuf) -{ - return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT) - & INFINIPATH_RHF_LENGTH_MASK) << 2; -} - -static inline __u32 ipath_hdrget_index(const __le32 * rbuf) -{ - return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT) - & INFINIPATH_RHF_EGRINDEX_MASK; -} - -static inline __u32 ipath_hdrget_seq(const __le32 *rbuf) -{ - return (__le32_to_cpu(rbuf[1]) >> INFINIPATH_RHF_SEQ_SHIFT) - & INFINIPATH_RHF_SEQ_MASK; -} - -static inline __u32 ipath_hdrget_offset(const __le32 *rbuf) -{ - return (__le32_to_cpu(rbuf[1]) >> INFINIPATH_RHF_HDRQ_OFFSET_SHIFT) - & INFINIPATH_RHF_HDRQ_OFFSET_MASK; -} - -static inline __u32 ipath_hdrget_use_egr_buf(const __le32 *rbuf) -{ - return __le32_to_cpu(rbuf[0]) & INFINIPATH_RHF_L_USE_EGR; -} - -static inline __u32 ipath_hdrget_ipath_ver(__le32 hdrword) -{ - return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT) - & INFINIPATH_I_VERS_MASK; -} - -#endif /* _IPATH_COMMON_H */ diff --git a/drivers/staging/rdma/ipath/ipath_cq.c b/drivers/staging/rdma/ipath/ipath_cq.c deleted file mode 100644 index e9dd9112e718..000000000000 --- a/drivers/staging/rdma/ipath/ipath_cq.c +++ /dev/null @@ -1,483 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_verbs.h" - -/** - * ipath_cq_enter - add a new entry to the completion queue - * @cq: completion queue - * @entry: work completion entry to add - * @sig: true if @entry is a solicitated entry - * - * This may be called with qp->s_lock held. - */ -void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int solicited) -{ - struct ipath_cq_wc *wc; - unsigned long flags; - u32 head; - u32 next; - - spin_lock_irqsave(&cq->lock, flags); - - /* - * Note that the head pointer might be writable by user processes. - * Take care to verify it is a sane value. - */ - wc = cq->queue; - head = wc->head; - if (head >= (unsigned) cq->ibcq.cqe) { - head = cq->ibcq.cqe; - next = 0; - } else - next = head + 1; - if (unlikely(next == wc->tail)) { - spin_unlock_irqrestore(&cq->lock, flags); - if (cq->ibcq.event_handler) { - struct ib_event ev; - - ev.device = cq->ibcq.device; - ev.element.cq = &cq->ibcq; - ev.event = IB_EVENT_CQ_ERR; - cq->ibcq.event_handler(&ev, cq->ibcq.cq_context); - } - return; - } - if (cq->ip) { - wc->uqueue[head].wr_id = entry->wr_id; - wc->uqueue[head].status = entry->status; - wc->uqueue[head].opcode = entry->opcode; - wc->uqueue[head].vendor_err = entry->vendor_err; - wc->uqueue[head].byte_len = entry->byte_len; - wc->uqueue[head].ex.imm_data = (__u32 __force) entry->ex.imm_data; - wc->uqueue[head].qp_num = entry->qp->qp_num; - wc->uqueue[head].src_qp = entry->src_qp; - wc->uqueue[head].wc_flags = entry->wc_flags; - wc->uqueue[head].pkey_index = entry->pkey_index; - wc->uqueue[head].slid = entry->slid; - wc->uqueue[head].sl = entry->sl; - wc->uqueue[head].dlid_path_bits = entry->dlid_path_bits; - wc->uqueue[head].port_num = entry->port_num; - /* Make sure entry is written before the head index. */ - smp_wmb(); - } else - wc->kqueue[head] = *entry; - wc->head = next; - - if (cq->notify == IB_CQ_NEXT_COMP || - (cq->notify == IB_CQ_SOLICITED && solicited)) { - cq->notify = IB_CQ_NONE; - cq->triggered++; - /* - * This will cause send_complete() to be called in - * another thread. - */ - tasklet_hi_schedule(&cq->comptask); - } - - spin_unlock_irqrestore(&cq->lock, flags); - - if (entry->status != IB_WC_SUCCESS) - to_idev(cq->ibcq.device)->n_wqe_errs++; -} - -/** - * ipath_poll_cq - poll for work completion entries - * @ibcq: the completion queue to poll - * @num_entries: the maximum number of entries to return - * @entry: pointer to array where work completions are placed - * - * Returns the number of completion entries polled. - * - * This may be called from interrupt context. Also called by ib_poll_cq() - * in the generic verbs code. - */ -int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) -{ - struct ipath_cq *cq = to_icq(ibcq); - struct ipath_cq_wc *wc; - unsigned long flags; - int npolled; - u32 tail; - - /* The kernel can only poll a kernel completion queue */ - if (cq->ip) { - npolled = -EINVAL; - goto bail; - } - - spin_lock_irqsave(&cq->lock, flags); - - wc = cq->queue; - tail = wc->tail; - if (tail > (u32) cq->ibcq.cqe) - tail = (u32) cq->ibcq.cqe; - for (npolled = 0; npolled < num_entries; ++npolled, ++entry) { - if (tail == wc->head) - break; - /* The kernel doesn't need a RMB since it has the lock. */ - *entry = wc->kqueue[tail]; - if (tail >= cq->ibcq.cqe) - tail = 0; - else - tail++; - } - wc->tail = tail; - - spin_unlock_irqrestore(&cq->lock, flags); - -bail: - return npolled; -} - -static void send_complete(unsigned long data) -{ - struct ipath_cq *cq = (struct ipath_cq *)data; - - /* - * The completion handler will most likely rearm the notification - * and poll for all pending entries. If a new completion entry - * is added while we are in this routine, tasklet_hi_schedule() - * won't call us again until we return so we check triggered to - * see if we need to call the handler again. - */ - for (;;) { - u8 triggered = cq->triggered; - - cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); - - if (cq->triggered == triggered) - return; - } -} - -/** - * ipath_create_cq - create a completion queue - * @ibdev: the device this completion queue is attached to - * @attr: creation attributes - * @context: unused by the InfiniPath driver - * @udata: unused by the InfiniPath driver - * - * Returns a pointer to the completion queue or negative errno values - * for failure. - * - * Called by ib_create_cq() in the generic verbs code. - */ -struct ib_cq *ipath_create_cq(struct ib_device *ibdev, - const struct ib_cq_init_attr *attr, - struct ib_ucontext *context, - struct ib_udata *udata) -{ - int entries = attr->cqe; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_cq *cq; - struct ipath_cq_wc *wc; - struct ib_cq *ret; - u32 sz; - - if (attr->flags) - return ERR_PTR(-EINVAL); - - if (entries < 1 || entries > ib_ipath_max_cqes) { - ret = ERR_PTR(-EINVAL); - goto done; - } - - /* Allocate the completion queue structure. */ - cq = kmalloc(sizeof(*cq), GFP_KERNEL); - if (!cq) { - ret = ERR_PTR(-ENOMEM); - goto done; - } - - /* - * Allocate the completion queue entries and head/tail pointers. - * This is allocated separately so that it can be resized and - * also mapped into user space. - * We need to use vmalloc() in order to support mmap and large - * numbers of entries. - */ - sz = sizeof(*wc); - if (udata && udata->outlen >= sizeof(__u64)) - sz += sizeof(struct ib_uverbs_wc) * (entries + 1); - else - sz += sizeof(struct ib_wc) * (entries + 1); - wc = vmalloc_user(sz); - if (!wc) { - ret = ERR_PTR(-ENOMEM); - goto bail_cq; - } - - /* - * Return the address of the WC as the offset to mmap. - * See ipath_mmap() for details. - */ - if (udata && udata->outlen >= sizeof(__u64)) { - int err; - - cq->ip = ipath_create_mmap_info(dev, sz, context, wc); - if (!cq->ip) { - ret = ERR_PTR(-ENOMEM); - goto bail_wc; - } - - err = ib_copy_to_udata(udata, &cq->ip->offset, - sizeof(cq->ip->offset)); - if (err) { - ret = ERR_PTR(err); - goto bail_ip; - } - } else - cq->ip = NULL; - - spin_lock(&dev->n_cqs_lock); - if (dev->n_cqs_allocated == ib_ipath_max_cqs) { - spin_unlock(&dev->n_cqs_lock); - ret = ERR_PTR(-ENOMEM); - goto bail_ip; - } - - dev->n_cqs_allocated++; - spin_unlock(&dev->n_cqs_lock); - - if (cq->ip) { - spin_lock_irq(&dev->pending_lock); - list_add(&cq->ip->pending_mmaps, &dev->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - } - - /* - * ib_create_cq() will initialize cq->ibcq except for cq->ibcq.cqe. - * The number of entries should be >= the number requested or return - * an error. - */ - cq->ibcq.cqe = entries; - cq->notify = IB_CQ_NONE; - cq->triggered = 0; - spin_lock_init(&cq->lock); - tasklet_init(&cq->comptask, send_complete, (unsigned long)cq); - wc->head = 0; - wc->tail = 0; - cq->queue = wc; - - ret = &cq->ibcq; - - goto done; - -bail_ip: - kfree(cq->ip); -bail_wc: - vfree(wc); -bail_cq: - kfree(cq); -done: - return ret; -} - -/** - * ipath_destroy_cq - destroy a completion queue - * @ibcq: the completion queue to destroy. - * - * Returns 0 for success. - * - * Called by ib_destroy_cq() in the generic verbs code. - */ -int ipath_destroy_cq(struct ib_cq *ibcq) -{ - struct ipath_ibdev *dev = to_idev(ibcq->device); - struct ipath_cq *cq = to_icq(ibcq); - - tasklet_kill(&cq->comptask); - spin_lock(&dev->n_cqs_lock); - dev->n_cqs_allocated--; - spin_unlock(&dev->n_cqs_lock); - if (cq->ip) - kref_put(&cq->ip->ref, ipath_release_mmap_info); - else - vfree(cq->queue); - kfree(cq); - - return 0; -} - -/** - * ipath_req_notify_cq - change the notification type for a completion queue - * @ibcq: the completion queue - * @notify_flags: the type of notification to request - * - * Returns 0 for success. - * - * This may be called from interrupt context. Also called by - * ib_req_notify_cq() in the generic verbs code. - */ -int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) -{ - struct ipath_cq *cq = to_icq(ibcq); - unsigned long flags; - int ret = 0; - - spin_lock_irqsave(&cq->lock, flags); - /* - * Don't change IB_CQ_NEXT_COMP to IB_CQ_SOLICITED but allow - * any other transitions (see C11-31 and C11-32 in ch. 11.4.2.2). - */ - if (cq->notify != IB_CQ_NEXT_COMP) - cq->notify = notify_flags & IB_CQ_SOLICITED_MASK; - - if ((notify_flags & IB_CQ_REPORT_MISSED_EVENTS) && - cq->queue->head != cq->queue->tail) - ret = 1; - - spin_unlock_irqrestore(&cq->lock, flags); - - return ret; -} - -/** - * ipath_resize_cq - change the size of the CQ - * @ibcq: the completion queue - * - * Returns 0 for success. - */ -int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) -{ - struct ipath_cq *cq = to_icq(ibcq); - struct ipath_cq_wc *old_wc; - struct ipath_cq_wc *wc; - u32 head, tail, n; - int ret; - u32 sz; - - if (cqe < 1 || cqe > ib_ipath_max_cqes) { - ret = -EINVAL; - goto bail; - } - - /* - * Need to use vmalloc() if we want to support large #s of entries. - */ - sz = sizeof(*wc); - if (udata && udata->outlen >= sizeof(__u64)) - sz += sizeof(struct ib_uverbs_wc) * (cqe + 1); - else - sz += sizeof(struct ib_wc) * (cqe + 1); - wc = vmalloc_user(sz); - if (!wc) { - ret = -ENOMEM; - goto bail; - } - - /* Check that we can write the offset to mmap. */ - if (udata && udata->outlen >= sizeof(__u64)) { - __u64 offset = 0; - - ret = ib_copy_to_udata(udata, &offset, sizeof(offset)); - if (ret) - goto bail_free; - } - - spin_lock_irq(&cq->lock); - /* - * Make sure head and tail are sane since they - * might be user writable. - */ - old_wc = cq->queue; - head = old_wc->head; - if (head > (u32) cq->ibcq.cqe) - head = (u32) cq->ibcq.cqe; - tail = old_wc->tail; - if (tail > (u32) cq->ibcq.cqe) - tail = (u32) cq->ibcq.cqe; - if (head < tail) - n = cq->ibcq.cqe + 1 + head - tail; - else - n = head - tail; - if (unlikely((u32)cqe < n)) { - ret = -EINVAL; - goto bail_unlock; - } - for (n = 0; tail != head; n++) { - if (cq->ip) - wc->uqueue[n] = old_wc->uqueue[tail]; - else - wc->kqueue[n] = old_wc->kqueue[tail]; - if (tail == (u32) cq->ibcq.cqe) - tail = 0; - else - tail++; - } - cq->ibcq.cqe = cqe; - wc->head = n; - wc->tail = 0; - cq->queue = wc; - spin_unlock_irq(&cq->lock); - - vfree(old_wc); - - if (cq->ip) { - struct ipath_ibdev *dev = to_idev(ibcq->device); - struct ipath_mmap_info *ip = cq->ip; - - ipath_update_mmap_info(dev, ip, sz, wc); - - /* - * Return the offset to mmap. - * See ipath_mmap() for details. - */ - if (udata && udata->outlen >= sizeof(__u64)) { - ret = ib_copy_to_udata(udata, &ip->offset, - sizeof(ip->offset)); - if (ret) - goto bail; - } - - spin_lock_irq(&dev->pending_lock); - if (list_empty(&ip->pending_mmaps)) - list_add(&ip->pending_mmaps, &dev->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - } - - ret = 0; - goto bail; - -bail_unlock: - spin_unlock_irq(&cq->lock); -bail_free: - vfree(wc); -bail: - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_debug.h b/drivers/staging/rdma/ipath/ipath_debug.h deleted file mode 100644 index 65926cd35759..000000000000 --- a/drivers/staging/rdma/ipath/ipath_debug.h +++ /dev/null @@ -1,99 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _IPATH_DEBUG_H -#define _IPATH_DEBUG_H - -#ifndef _IPATH_DEBUGGING /* debugging enabled or not */ -#define _IPATH_DEBUGGING 1 -#endif - -#if _IPATH_DEBUGGING - -/* - * Mask values for debugging. The scheme allows us to compile out any - * of the debug tracing stuff, and if compiled in, to enable or disable - * dynamically. This can be set at modprobe time also: - * modprobe infinipath.ko infinipath_debug=7 - */ - -#define __IPATH_INFO 0x1 /* generic low verbosity stuff */ -#define __IPATH_DBG 0x2 /* generic debug */ -#define __IPATH_TRSAMPLE 0x8 /* generate trace buffer sample entries */ -/* leave some low verbosity spots open */ -#define __IPATH_VERBDBG 0x40 /* very verbose debug */ -#define __IPATH_PKTDBG 0x80 /* print packet data */ -/* print process startup (init)/exit messages */ -#define __IPATH_PROCDBG 0x100 -/* print mmap/fault stuff, not using VDBG any more */ -#define __IPATH_MMDBG 0x200 -#define __IPATH_ERRPKTDBG 0x400 -#define __IPATH_USER_SEND 0x1000 /* use user mode send */ -#define __IPATH_KERNEL_SEND 0x2000 /* use kernel mode send */ -#define __IPATH_EPKTDBG 0x4000 /* print ethernet packet data */ -#define __IPATH_IPATHDBG 0x10000 /* Ethernet (IPATH) gen debug */ -#define __IPATH_IPATHWARN 0x20000 /* Ethernet (IPATH) warnings */ -#define __IPATH_IPATHERR 0x40000 /* Ethernet (IPATH) errors */ -#define __IPATH_IPATHPD 0x80000 /* Ethernet (IPATH) packet dump */ -#define __IPATH_IPATHTABLE 0x100000 /* Ethernet (IPATH) table dump */ -#define __IPATH_LINKVERBDBG 0x200000 /* very verbose linkchange debug */ - -#else /* _IPATH_DEBUGGING */ - -/* - * define all of these even with debugging off, for the few places that do - * if(infinipath_debug & _IPATH_xyzzy), but in a way that will make the - * compiler eliminate the code - */ - -#define __IPATH_INFO 0x0 /* generic low verbosity stuff */ -#define __IPATH_DBG 0x0 /* generic debug */ -#define __IPATH_TRSAMPLE 0x0 /* generate trace buffer sample entries */ -#define __IPATH_VERBDBG 0x0 /* very verbose debug */ -#define __IPATH_PKTDBG 0x0 /* print packet data */ -#define __IPATH_PROCDBG 0x0 /* process startup (init)/exit messages */ -/* print mmap/fault stuff, not using VDBG any more */ -#define __IPATH_MMDBG 0x0 -#define __IPATH_EPKTDBG 0x0 /* print ethernet packet data */ -#define __IPATH_IPATHDBG 0x0 /* Ethernet (IPATH) table dump on */ -#define __IPATH_IPATHWARN 0x0 /* Ethernet (IPATH) warnings on */ -#define __IPATH_IPATHERR 0x0 /* Ethernet (IPATH) errors on */ -#define __IPATH_IPATHPD 0x0 /* Ethernet (IPATH) packet dump on */ -#define __IPATH_IPATHTABLE 0x0 /* Ethernet (IPATH) packet dump on */ -#define __IPATH_LINKVERBDBG 0x0 /* very verbose linkchange debug */ - -#endif /* _IPATH_DEBUGGING */ - -#define __IPATH_VERBOSEDBG __IPATH_VERBDBG - -#endif /* _IPATH_DEBUG_H */ diff --git a/drivers/staging/rdma/ipath/ipath_diag.c b/drivers/staging/rdma/ipath/ipath_diag.c deleted file mode 100644 index 45802e97332e..000000000000 --- a/drivers/staging/rdma/ipath/ipath_diag.c +++ /dev/null @@ -1,551 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * This file contains support for diagnostic functions. It is accessed by - * opening the ipath_diag device, normally minor number 129. Diagnostic use - * of the InfiniPath chip may render the chip or board unusable until the - * driver is unloaded, or in some cases, until the system is rebooted. - * - * Accesses to the chip through this interface are not similar to going - * through the /sys/bus/pci resource mmap interface. - */ - -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_common.h" - -int ipath_diag_inuse; -static int diag_set_link; - -static int ipath_diag_open(struct inode *in, struct file *fp); -static int ipath_diag_release(struct inode *in, struct file *fp); -static ssize_t ipath_diag_read(struct file *fp, char __user *data, - size_t count, loff_t *off); -static ssize_t ipath_diag_write(struct file *fp, const char __user *data, - size_t count, loff_t *off); - -static const struct file_operations diag_file_ops = { - .owner = THIS_MODULE, - .write = ipath_diag_write, - .read = ipath_diag_read, - .open = ipath_diag_open, - .release = ipath_diag_release, - .llseek = default_llseek, -}; - -static ssize_t ipath_diagpkt_write(struct file *fp, - const char __user *data, - size_t count, loff_t *off); - -static const struct file_operations diagpkt_file_ops = { - .owner = THIS_MODULE, - .write = ipath_diagpkt_write, - .llseek = noop_llseek, -}; - -static atomic_t diagpkt_count = ATOMIC_INIT(0); -static struct cdev *diagpkt_cdev; -static struct device *diagpkt_dev; - -int ipath_diag_add(struct ipath_devdata *dd) -{ - char name[16]; - int ret = 0; - - if (atomic_inc_return(&diagpkt_count) == 1) { - ret = ipath_cdev_init(IPATH_DIAGPKT_MINOR, - "ipath_diagpkt", &diagpkt_file_ops, - &diagpkt_cdev, &diagpkt_dev); - - if (ret) { - ipath_dev_err(dd, "Couldn't create ipath_diagpkt " - "device: %d", ret); - goto done; - } - } - - snprintf(name, sizeof(name), "ipath_diag%d", dd->ipath_unit); - - ret = ipath_cdev_init(IPATH_DIAG_MINOR_BASE + dd->ipath_unit, name, - &diag_file_ops, &dd->diag_cdev, - &dd->diag_dev); - if (ret) - ipath_dev_err(dd, "Couldn't create %s device: %d", - name, ret); - -done: - return ret; -} - -void ipath_diag_remove(struct ipath_devdata *dd) -{ - if (atomic_dec_and_test(&diagpkt_count)) - ipath_cdev_cleanup(&diagpkt_cdev, &diagpkt_dev); - - ipath_cdev_cleanup(&dd->diag_cdev, &dd->diag_dev); -} - -/** - * ipath_read_umem64 - read a 64-bit quantity from the chip into user space - * @dd: the infinipath device - * @uaddr: the location to store the data in user memory - * @caddr: the source chip address (full pointer, not offset) - * @count: number of bytes to copy (multiple of 32 bits) - * - * This function also localizes all chip memory accesses. - * The copy should be written such that we read full cacheline packets - * from the chip. This is usually used for a single qword - * - * NOTE: This assumes the chip address is 64-bit aligned. - */ -static int ipath_read_umem64(struct ipath_devdata *dd, void __user *uaddr, - const void __iomem *caddr, size_t count) -{ - const u64 __iomem *reg_addr = caddr; - const u64 __iomem *reg_end = reg_addr + (count / sizeof(u64)); - int ret; - - /* not very efficient, but it works for now */ - if (reg_addr < dd->ipath_kregbase || reg_end > dd->ipath_kregend) { - ret = -EINVAL; - goto bail; - } - while (reg_addr < reg_end) { - u64 data = readq(reg_addr); - if (copy_to_user(uaddr, &data, sizeof(u64))) { - ret = -EFAULT; - goto bail; - } - reg_addr++; - uaddr += sizeof(u64); - } - ret = 0; -bail: - return ret; -} - -/** - * ipath_write_umem64 - write a 64-bit quantity to the chip from user space - * @dd: the infinipath device - * @caddr: the destination chip address (full pointer, not offset) - * @uaddr: the source of the data in user memory - * @count: the number of bytes to copy (multiple of 32 bits) - * - * This is usually used for a single qword - * NOTE: This assumes the chip address is 64-bit aligned. - */ - -static int ipath_write_umem64(struct ipath_devdata *dd, void __iomem *caddr, - const void __user *uaddr, size_t count) -{ - u64 __iomem *reg_addr = caddr; - const u64 __iomem *reg_end = reg_addr + (count / sizeof(u64)); - int ret; - - /* not very efficient, but it works for now */ - if (reg_addr < dd->ipath_kregbase || reg_end > dd->ipath_kregend) { - ret = -EINVAL; - goto bail; - } - while (reg_addr < reg_end) { - u64 data; - if (copy_from_user(&data, uaddr, sizeof(data))) { - ret = -EFAULT; - goto bail; - } - writeq(data, reg_addr); - - reg_addr++; - uaddr += sizeof(u64); - } - ret = 0; -bail: - return ret; -} - -/** - * ipath_read_umem32 - read a 32-bit quantity from the chip into user space - * @dd: the infinipath device - * @uaddr: the location to store the data in user memory - * @caddr: the source chip address (full pointer, not offset) - * @count: number of bytes to copy - * - * read 32 bit values, not 64 bit; for memories that only - * support 32 bit reads; usually a single dword. - */ -static int ipath_read_umem32(struct ipath_devdata *dd, void __user *uaddr, - const void __iomem *caddr, size_t count) -{ - const u32 __iomem *reg_addr = caddr; - const u32 __iomem *reg_end = reg_addr + (count / sizeof(u32)); - int ret; - - if (reg_addr < (u32 __iomem *) dd->ipath_kregbase || - reg_end > (u32 __iomem *) dd->ipath_kregend) { - ret = -EINVAL; - goto bail; - } - /* not very efficient, but it works for now */ - while (reg_addr < reg_end) { - u32 data = readl(reg_addr); - if (copy_to_user(uaddr, &data, sizeof(data))) { - ret = -EFAULT; - goto bail; - } - - reg_addr++; - uaddr += sizeof(u32); - - } - ret = 0; -bail: - return ret; -} - -/** - * ipath_write_umem32 - write a 32-bit quantity to the chip from user space - * @dd: the infinipath device - * @caddr: the destination chip address (full pointer, not offset) - * @uaddr: the source of the data in user memory - * @count: number of bytes to copy - * - * write 32 bit values, not 64 bit; for memories that only - * support 32 bit write; usually a single dword. - */ - -static int ipath_write_umem32(struct ipath_devdata *dd, void __iomem *caddr, - const void __user *uaddr, size_t count) -{ - u32 __iomem *reg_addr = caddr; - const u32 __iomem *reg_end = reg_addr + (count / sizeof(u32)); - int ret; - - if (reg_addr < (u32 __iomem *) dd->ipath_kregbase || - reg_end > (u32 __iomem *) dd->ipath_kregend) { - ret = -EINVAL; - goto bail; - } - while (reg_addr < reg_end) { - u32 data; - if (copy_from_user(&data, uaddr, sizeof(data))) { - ret = -EFAULT; - goto bail; - } - writel(data, reg_addr); - - reg_addr++; - uaddr += sizeof(u32); - } - ret = 0; -bail: - return ret; -} - -static int ipath_diag_open(struct inode *in, struct file *fp) -{ - int unit = iminor(in) - IPATH_DIAG_MINOR_BASE; - struct ipath_devdata *dd; - int ret; - - mutex_lock(&ipath_mutex); - - if (ipath_diag_inuse) { - ret = -EBUSY; - goto bail; - } - - dd = ipath_lookup(unit); - - if (dd == NULL || !(dd->ipath_flags & IPATH_PRESENT) || - !dd->ipath_kregbase) { - ret = -ENODEV; - goto bail; - } - - fp->private_data = dd; - ipath_diag_inuse = -2; - diag_set_link = 0; - ret = 0; - - /* Only expose a way to reset the device if we - make it into diag mode. */ - ipath_expose_reset(&dd->pcidev->dev); - -bail: - mutex_unlock(&ipath_mutex); - - return ret; -} - -/** - * ipath_diagpkt_write - write an IB packet - * @fp: the diag data device file pointer - * @data: ipath_diag_pkt structure saying where to get the packet - * @count: size of data to write - * @off: unused by this code - */ -static ssize_t ipath_diagpkt_write(struct file *fp, - const char __user *data, - size_t count, loff_t *off) -{ - u32 __iomem *piobuf; - u32 plen, pbufn, maxlen_reserve; - struct ipath_diag_pkt odp; - struct ipath_diag_xpkt dp; - u32 *tmpbuf = NULL; - struct ipath_devdata *dd; - ssize_t ret = 0; - u64 val; - u32 l_state, lt_state; /* LinkState, LinkTrainingState */ - - - if (count == sizeof(dp)) { - if (copy_from_user(&dp, data, sizeof(dp))) { - ret = -EFAULT; - goto bail; - } - } else if (count == sizeof(odp)) { - if (copy_from_user(&odp, data, sizeof(odp))) { - ret = -EFAULT; - goto bail; - } - dp.len = odp.len; - dp.unit = odp.unit; - dp.data = odp.data; - dp.pbc_wd = 0; - } else { - ret = -EINVAL; - goto bail; - } - - /* send count must be an exact number of dwords */ - if (dp.len & 3) { - ret = -EINVAL; - goto bail; - } - - plen = dp.len >> 2; - - dd = ipath_lookup(dp.unit); - if (!dd || !(dd->ipath_flags & IPATH_PRESENT) || - !dd->ipath_kregbase) { - ipath_cdbg(VERBOSE, "illegal unit %u for diag data send\n", - dp.unit); - ret = -ENODEV; - goto bail; - } - - if (ipath_diag_inuse && !diag_set_link && - !(dd->ipath_flags & IPATH_LINKACTIVE)) { - diag_set_link = 1; - ipath_cdbg(VERBOSE, "Trying to set to set link active for " - "diag pkt\n"); - ipath_set_linkstate(dd, IPATH_IB_LINKARM); - ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE); - } - - if (!(dd->ipath_flags & IPATH_INITTED)) { - /* no hardware, freeze, etc. */ - ipath_cdbg(VERBOSE, "unit %u not usable\n", dd->ipath_unit); - ret = -ENODEV; - goto bail; - } - /* - * Want to skip check for l_state if using custom PBC, - * because we might be trying to force an SM packet out. - * first-cut, skip _all_ state checking in that case. - */ - val = ipath_ib_state(dd, dd->ipath_lastibcstat); - lt_state = ipath_ib_linktrstate(dd, dd->ipath_lastibcstat); - l_state = ipath_ib_linkstate(dd, dd->ipath_lastibcstat); - if (!dp.pbc_wd && (lt_state != INFINIPATH_IBCS_LT_STATE_LINKUP || - (val != dd->ib_init && val != dd->ib_arm && - val != dd->ib_active))) { - ipath_cdbg(VERBOSE, "unit %u not ready (state %llx)\n", - dd->ipath_unit, (unsigned long long) val); - ret = -EINVAL; - goto bail; - } - - /* - * need total length before first word written, plus 2 Dwords. One Dword - * is for padding so we get the full user data when not aligned on - * a word boundary. The other Dword is to make sure we have room for the - * ICRC which gets tacked on later. - */ - maxlen_reserve = 2 * sizeof(u32); - if (dp.len > dd->ipath_ibmaxlen - maxlen_reserve) { - ipath_dbg("Pkt len 0x%x > ibmaxlen %x\n", - dp.len, dd->ipath_ibmaxlen); - ret = -EINVAL; - goto bail; - } - - plen = sizeof(u32) + dp.len; - - tmpbuf = vmalloc(plen); - if (!tmpbuf) { - dev_info(&dd->pcidev->dev, "Unable to allocate tmp buffer, " - "failing\n"); - ret = -ENOMEM; - goto bail; - } - - if (copy_from_user(tmpbuf, - (const void __user *) (unsigned long) dp.data, - dp.len)) { - ret = -EFAULT; - goto bail; - } - - plen >>= 2; /* in dwords */ - - piobuf = ipath_getpiobuf(dd, plen, &pbufn); - if (!piobuf) { - ipath_cdbg(VERBOSE, "No PIO buffers avail unit for %u\n", - dd->ipath_unit); - ret = -EBUSY; - goto bail; - } - /* disarm it just to be extra sure */ - ipath_disarm_piobufs(dd, pbufn, 1); - - if (ipath_debug & __IPATH_PKTDBG) - ipath_cdbg(VERBOSE, "unit %u 0x%x+1w pio%d\n", - dd->ipath_unit, plen - 1, pbufn); - - if (dp.pbc_wd == 0) - dp.pbc_wd = plen; - writeq(dp.pbc_wd, piobuf); - /* - * Copy all by the trigger word, then flush, so it's written - * to chip before trigger word, then write trigger word, then - * flush again, so packet is sent. - */ - if (dd->ipath_flags & IPATH_PIO_FLUSH_WC) { - ipath_flush_wc(); - __iowrite32_copy(piobuf + 2, tmpbuf, plen - 1); - ipath_flush_wc(); - __raw_writel(tmpbuf[plen - 1], piobuf + plen + 1); - } else - __iowrite32_copy(piobuf + 2, tmpbuf, plen); - - ipath_flush_wc(); - - ret = sizeof(dp); - -bail: - vfree(tmpbuf); - return ret; -} - -static int ipath_diag_release(struct inode *in, struct file *fp) -{ - mutex_lock(&ipath_mutex); - ipath_diag_inuse = 0; - fp->private_data = NULL; - mutex_unlock(&ipath_mutex); - return 0; -} - -static ssize_t ipath_diag_read(struct file *fp, char __user *data, - size_t count, loff_t *off) -{ - struct ipath_devdata *dd = fp->private_data; - void __iomem *kreg_base; - ssize_t ret; - - kreg_base = dd->ipath_kregbase; - - if (count == 0) - ret = 0; - else if ((count % 4) || (*off % 4)) - /* address or length is not 32-bit aligned, hence invalid */ - ret = -EINVAL; - else if (ipath_diag_inuse < 1 && (*off || count != 8)) - ret = -EINVAL; /* prevent cat /dev/ipath_diag* */ - else if ((count % 8) || (*off % 8)) - /* address or length not 64-bit aligned; do 32-bit reads */ - ret = ipath_read_umem32(dd, data, kreg_base + *off, count); - else - ret = ipath_read_umem64(dd, data, kreg_base + *off, count); - - if (ret >= 0) { - *off += count; - ret = count; - if (ipath_diag_inuse == -2) - ipath_diag_inuse++; - } - - return ret; -} - -static ssize_t ipath_diag_write(struct file *fp, const char __user *data, - size_t count, loff_t *off) -{ - struct ipath_devdata *dd = fp->private_data; - void __iomem *kreg_base; - ssize_t ret; - - kreg_base = dd->ipath_kregbase; - - if (count == 0) - ret = 0; - else if ((count % 4) || (*off % 4)) - /* address or length is not 32-bit aligned, hence invalid */ - ret = -EINVAL; - else if ((ipath_diag_inuse == -1 && (*off || count != 8)) || - ipath_diag_inuse == -2) /* read qw off 0, write qw off 0 */ - ret = -EINVAL; /* before any other write allowed */ - else if ((count % 8) || (*off % 8)) - /* address or length not 64-bit aligned; do 32-bit writes */ - ret = ipath_write_umem32(dd, kreg_base + *off, data, count); - else - ret = ipath_write_umem64(dd, kreg_base + *off, data, count); - - if (ret >= 0) { - *off += count; - ret = count; - if (ipath_diag_inuse == -1) - ipath_diag_inuse = 1; /* all read/write OK now */ - } - - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_dma.c b/drivers/staging/rdma/ipath/ipath_dma.c deleted file mode 100644 index 123a8c053539..000000000000 --- a/drivers/staging/rdma/ipath/ipath_dma.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright (c) 2006 QLogic, Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_verbs.h" - -#define BAD_DMA_ADDRESS ((u64) 0) - -/* - * The following functions implement driver specific replacements - * for the ib_dma_*() functions. - * - * These functions return kernel virtual addresses instead of - * device bus addresses since the driver uses the CPU to copy - * data instead of using hardware DMA. - */ - -static int ipath_mapping_error(struct ib_device *dev, u64 dma_addr) -{ - return dma_addr == BAD_DMA_ADDRESS; -} - -static u64 ipath_dma_map_single(struct ib_device *dev, - void *cpu_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - return (u64) cpu_addr; -} - -static void ipath_dma_unmap_single(struct ib_device *dev, - u64 addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); -} - -static u64 ipath_dma_map_page(struct ib_device *dev, - struct page *page, - unsigned long offset, - size_t size, - enum dma_data_direction direction) -{ - u64 addr; - - BUG_ON(!valid_dma_direction(direction)); - - if (offset + size > PAGE_SIZE) { - addr = BAD_DMA_ADDRESS; - goto done; - } - - addr = (u64) page_address(page); - if (addr) - addr += offset; - /* TODO: handle highmem pages */ - -done: - return addr; -} - -static void ipath_dma_unmap_page(struct ib_device *dev, - u64 addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); -} - -static int ipath_map_sg(struct ib_device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction direction) -{ - struct scatterlist *sg; - u64 addr; - int i; - int ret = nents; - - BUG_ON(!valid_dma_direction(direction)); - - for_each_sg(sgl, sg, nents, i) { - addr = (u64) page_address(sg_page(sg)); - /* TODO: handle highmem pages */ - if (!addr) { - ret = 0; - break; - } - sg->dma_address = addr + sg->offset; -#ifdef CONFIG_NEED_SG_DMA_LENGTH - sg->dma_length = sg->length; -#endif - } - return ret; -} - -static void ipath_unmap_sg(struct ib_device *dev, - struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); -} - -static void ipath_sync_single_for_cpu(struct ib_device *dev, - u64 addr, - size_t size, - enum dma_data_direction dir) -{ -} - -static void ipath_sync_single_for_device(struct ib_device *dev, - u64 addr, - size_t size, - enum dma_data_direction dir) -{ -} - -static void *ipath_dma_alloc_coherent(struct ib_device *dev, size_t size, - u64 *dma_handle, gfp_t flag) -{ - struct page *p; - void *addr = NULL; - - p = alloc_pages(flag, get_order(size)); - if (p) - addr = page_address(p); - if (dma_handle) - *dma_handle = (u64) addr; - return addr; -} - -static void ipath_dma_free_coherent(struct ib_device *dev, size_t size, - void *cpu_addr, u64 dma_handle) -{ - free_pages((unsigned long) cpu_addr, get_order(size)); -} - -struct ib_dma_mapping_ops ipath_dma_mapping_ops = { - .mapping_error = ipath_mapping_error, - .map_single = ipath_dma_map_single, - .unmap_single = ipath_dma_unmap_single, - .map_page = ipath_dma_map_page, - .unmap_page = ipath_dma_unmap_page, - .map_sg = ipath_map_sg, - .unmap_sg = ipath_unmap_sg, - .sync_single_for_cpu = ipath_sync_single_for_cpu, - .sync_single_for_device = ipath_sync_single_for_device, - .alloc_coherent = ipath_dma_alloc_coherent, - .free_coherent = ipath_dma_free_coherent -}; diff --git a/drivers/staging/rdma/ipath/ipath_driver.c b/drivers/staging/rdma/ipath/ipath_driver.c deleted file mode 100644 index 2ab22f98e3ba..000000000000 --- a/drivers/staging/rdma/ipath/ipath_driver.c +++ /dev/null @@ -1,2784 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_X86_64 -#include -#endif - -#include "ipath_kernel.h" -#include "ipath_verbs.h" - -static void ipath_update_pio_bufs(struct ipath_devdata *); - -const char *ipath_get_unit_name(int unit) -{ - static char iname[16]; - snprintf(iname, sizeof iname, "infinipath%u", unit); - return iname; -} - -#define DRIVER_LOAD_MSG "QLogic " IPATH_DRV_NAME " loaded: " -#define PFX IPATH_DRV_NAME ": " - -/* - * The size has to be longer than this string, so we can append - * board/chip information to it in the init code. - */ -const char ib_ipath_version[] = IPATH_IDSTR "\n"; - -static struct idr unit_table; -DEFINE_SPINLOCK(ipath_devs_lock); -LIST_HEAD(ipath_dev_list); - -wait_queue_head_t ipath_state_wait; - -unsigned ipath_debug = __IPATH_INFO; - -module_param_named(debug, ipath_debug, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(debug, "mask for debug prints"); -EXPORT_SYMBOL_GPL(ipath_debug); - -unsigned ipath_mtu4096 = 1; /* max 4KB IB mtu by default, if supported */ -module_param_named(mtu4096, ipath_mtu4096, uint, S_IRUGO); -MODULE_PARM_DESC(mtu4096, "enable MTU of 4096 bytes, if supported"); - -static unsigned ipath_hol_timeout_ms = 13000; -module_param_named(hol_timeout_ms, ipath_hol_timeout_ms, uint, S_IRUGO); -MODULE_PARM_DESC(hol_timeout_ms, - "duration of user app suspension after link failure"); - -unsigned ipath_linkrecovery = 1; -module_param_named(linkrecovery, ipath_linkrecovery, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(linkrecovery, "enable workaround for link recovery issue"); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("QLogic "); -MODULE_DESCRIPTION("QLogic InfiniPath driver"); - -/* - * Table to translate the LINKTRAININGSTATE portion of - * IBCStatus to a human-readable form. - */ -const char *ipath_ibcstatus_str[] = { - "Disabled", - "LinkUp", - "PollActive", - "PollQuiet", - "SleepDelay", - "SleepQuiet", - "LState6", /* unused */ - "LState7", /* unused */ - "CfgDebounce", - "CfgRcvfCfg", - "CfgWaitRmt", - "CfgIdle", - "RecovRetrain", - "CfgTxRevLane", /* unused before IBA7220 */ - "RecovWaitRmt", - "RecovIdle", - /* below were added for IBA7220 */ - "CfgEnhanced", - "CfgTest", - "CfgWaitRmtTest", - "CfgWaitCfgEnhanced", - "SendTS_T", - "SendTstIdles", - "RcvTS_T", - "SendTst_TS1s", - "LTState18", "LTState19", "LTState1A", "LTState1B", - "LTState1C", "LTState1D", "LTState1E", "LTState1F" -}; - -static void ipath_remove_one(struct pci_dev *); -static int ipath_init_one(struct pci_dev *, const struct pci_device_id *); - -/* Only needed for registration, nothing else needs this info */ -#define PCI_VENDOR_ID_PATHSCALE 0x1fc1 -#define PCI_DEVICE_ID_INFINIPATH_HT 0xd - -/* Number of seconds before our card status check... */ -#define STATUS_TIMEOUT 60 - -static const struct pci_device_id ipath_pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_PATHSCALE, PCI_DEVICE_ID_INFINIPATH_HT) }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, ipath_pci_tbl); - -static struct pci_driver ipath_driver = { - .name = IPATH_DRV_NAME, - .probe = ipath_init_one, - .remove = ipath_remove_one, - .id_table = ipath_pci_tbl, - .driver = { - .groups = ipath_driver_attr_groups, - }, -}; - -static inline void read_bars(struct ipath_devdata *dd, struct pci_dev *dev, - u32 *bar0, u32 *bar1) -{ - int ret; - - ret = pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, bar0); - if (ret) - ipath_dev_err(dd, "failed to read bar0 before enable: " - "error %d\n", -ret); - - ret = pci_read_config_dword(dev, PCI_BASE_ADDRESS_1, bar1); - if (ret) - ipath_dev_err(dd, "failed to read bar1 before enable: " - "error %d\n", -ret); - - ipath_dbg("Read bar0 %x bar1 %x\n", *bar0, *bar1); -} - -static void ipath_free_devdata(struct pci_dev *pdev, - struct ipath_devdata *dd) -{ - unsigned long flags; - - pci_set_drvdata(pdev, NULL); - - if (dd->ipath_unit != -1) { - spin_lock_irqsave(&ipath_devs_lock, flags); - idr_remove(&unit_table, dd->ipath_unit); - list_del(&dd->ipath_list); - spin_unlock_irqrestore(&ipath_devs_lock, flags); - } - vfree(dd); -} - -static struct ipath_devdata *ipath_alloc_devdata(struct pci_dev *pdev) -{ - unsigned long flags; - struct ipath_devdata *dd; - int ret; - - dd = vzalloc(sizeof(*dd)); - if (!dd) { - dd = ERR_PTR(-ENOMEM); - goto bail; - } - dd->ipath_unit = -1; - - idr_preload(GFP_KERNEL); - spin_lock_irqsave(&ipath_devs_lock, flags); - - ret = idr_alloc(&unit_table, dd, 0, 0, GFP_NOWAIT); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME - ": Could not allocate unit ID: error %d\n", -ret); - ipath_free_devdata(pdev, dd); - dd = ERR_PTR(ret); - goto bail_unlock; - } - dd->ipath_unit = ret; - - dd->pcidev = pdev; - pci_set_drvdata(pdev, dd); - - list_add(&dd->ipath_list, &ipath_dev_list); - -bail_unlock: - spin_unlock_irqrestore(&ipath_devs_lock, flags); - idr_preload_end(); -bail: - return dd; -} - -static inline struct ipath_devdata *__ipath_lookup(int unit) -{ - return idr_find(&unit_table, unit); -} - -struct ipath_devdata *ipath_lookup(int unit) -{ - struct ipath_devdata *dd; - unsigned long flags; - - spin_lock_irqsave(&ipath_devs_lock, flags); - dd = __ipath_lookup(unit); - spin_unlock_irqrestore(&ipath_devs_lock, flags); - - return dd; -} - -int ipath_count_units(int *npresentp, int *nupp, int *maxportsp) -{ - int nunits, npresent, nup; - struct ipath_devdata *dd; - unsigned long flags; - int maxports; - - nunits = npresent = nup = maxports = 0; - - spin_lock_irqsave(&ipath_devs_lock, flags); - - list_for_each_entry(dd, &ipath_dev_list, ipath_list) { - nunits++; - if ((dd->ipath_flags & IPATH_PRESENT) && dd->ipath_kregbase) - npresent++; - if (dd->ipath_lid && - !(dd->ipath_flags & (IPATH_DISABLED | IPATH_LINKDOWN - | IPATH_LINKUNK))) - nup++; - if (dd->ipath_cfgports > maxports) - maxports = dd->ipath_cfgports; - } - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - - if (npresentp) - *npresentp = npresent; - if (nupp) - *nupp = nup; - if (maxportsp) - *maxportsp = maxports; - - return nunits; -} - -/* - * These next two routines are placeholders in case we don't have per-arch - * code for controlling write combining. If explicit control of write - * combining is not available, performance will probably be awful. - */ - -int __attribute__((weak)) ipath_enable_wc(struct ipath_devdata *dd) -{ - return -EOPNOTSUPP; -} - -void __attribute__((weak)) ipath_disable_wc(struct ipath_devdata *dd) -{ -} - -/* - * Perform a PIO buffer bandwidth write test, to verify proper system - * configuration. Even when all the setup calls work, occasionally - * BIOS or other issues can prevent write combining from working, or - * can cause other bandwidth problems to the chip. - * - * This test simply writes the same buffer over and over again, and - * measures close to the peak bandwidth to the chip (not testing - * data bandwidth to the wire). On chips that use an address-based - * trigger to send packets to the wire, this is easy. On chips that - * use a count to trigger, we want to make sure that the packet doesn't - * go out on the wire, or trigger flow control checks. - */ -static void ipath_verify_pioperf(struct ipath_devdata *dd) -{ - u32 pbnum, cnt, lcnt; - u32 __iomem *piobuf; - u32 *addr; - u64 msecs, emsecs; - - piobuf = ipath_getpiobuf(dd, 0, &pbnum); - if (!piobuf) { - dev_info(&dd->pcidev->dev, - "No PIObufs for checking perf, skipping\n"); - return; - } - - /* - * Enough to give us a reasonable test, less than piobuf size, and - * likely multiple of store buffer length. - */ - cnt = 1024; - - addr = vmalloc(cnt); - if (!addr) { - dev_info(&dd->pcidev->dev, - "Couldn't get memory for checking PIO perf," - " skipping\n"); - goto done; - } - - preempt_disable(); /* we want reasonably accurate elapsed time */ - msecs = 1 + jiffies_to_msecs(jiffies); - for (lcnt = 0; lcnt < 10000U; lcnt++) { - /* wait until we cross msec boundary */ - if (jiffies_to_msecs(jiffies) >= msecs) - break; - udelay(1); - } - - ipath_disable_armlaunch(dd); - - /* - * length 0, no dwords actually sent, and mark as VL15 - * on chips where that may matter (due to IB flowcontrol) - */ - if ((dd->ipath_flags & IPATH_HAS_PBC_CNT)) - writeq(1UL << 63, piobuf); - else - writeq(0, piobuf); - ipath_flush_wc(); - - /* - * this is only roughly accurate, since even with preempt we - * still take interrupts that could take a while. Running for - * >= 5 msec seems to get us "close enough" to accurate values - */ - msecs = jiffies_to_msecs(jiffies); - for (emsecs = lcnt = 0; emsecs <= 5UL; lcnt++) { - __iowrite32_copy(piobuf + 64, addr, cnt >> 2); - emsecs = jiffies_to_msecs(jiffies) - msecs; - } - - /* 1 GiB/sec, slightly over IB SDR line rate */ - if (lcnt < (emsecs * 1024U)) - ipath_dev_err(dd, - "Performance problem: bandwidth to PIO buffers is " - "only %u MiB/sec\n", - lcnt / (u32) emsecs); - else - ipath_dbg("PIO buffer bandwidth %u MiB/sec is OK\n", - lcnt / (u32) emsecs); - - preempt_enable(); - - vfree(addr); - -done: - /* disarm piobuf, so it's available again */ - ipath_disarm_piobufs(dd, pbnum, 1); - ipath_enable_armlaunch(dd); -} - -static void cleanup_device(struct ipath_devdata *dd); - -static int ipath_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - int ret, len, j; - struct ipath_devdata *dd; - unsigned long long addr; - u32 bar0 = 0, bar1 = 0; - -#ifdef CONFIG_X86_64 - if (pat_enabled()) { - pr_warn("ipath needs PAT disabled, boot with nopat kernel parameter\n"); - ret = -ENODEV; - goto bail; - } -#endif - - dd = ipath_alloc_devdata(pdev); - if (IS_ERR(dd)) { - ret = PTR_ERR(dd); - printk(KERN_ERR IPATH_DRV_NAME - ": Could not allocate devdata: error %d\n", -ret); - goto bail; - } - - ipath_cdbg(VERBOSE, "initializing unit #%u\n", dd->ipath_unit); - - ret = pci_enable_device(pdev); - if (ret) { - /* This can happen iff: - * - * We did a chip reset, and then failed to reprogram the - * BAR, or the chip reset due to an internal error. We then - * unloaded the driver and reloaded it. - * - * Both reset cases set the BAR back to initial state. For - * the latter case, the AER sticky error bit at offset 0x718 - * should be set, but the Linux kernel doesn't yet know - * about that, it appears. If the original BAR was retained - * in the kernel data structures, this may be OK. - */ - ipath_dev_err(dd, "enable unit %d failed: error %d\n", - dd->ipath_unit, -ret); - goto bail_devdata; - } - addr = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - ipath_cdbg(VERBOSE, "regbase (0) %llx len %d irq %d, vend %x/%x " - "driver_data %lx\n", addr, len, pdev->irq, ent->vendor, - ent->device, ent->driver_data); - - read_bars(dd, pdev, &bar0, &bar1); - - if (!bar1 && !(bar0 & ~0xf)) { - if (addr) { - dev_info(&pdev->dev, "BAR is 0 (probable RESET), " - "rewriting as %llx\n", addr); - ret = pci_write_config_dword( - pdev, PCI_BASE_ADDRESS_0, addr); - if (ret) { - ipath_dev_err(dd, "rewrite of BAR0 " - "failed: err %d\n", -ret); - goto bail_disable; - } - ret = pci_write_config_dword( - pdev, PCI_BASE_ADDRESS_1, addr >> 32); - if (ret) { - ipath_dev_err(dd, "rewrite of BAR1 " - "failed: err %d\n", -ret); - goto bail_disable; - } - } else { - ipath_dev_err(dd, "BAR is 0 (probable RESET), " - "not usable until reboot\n"); - ret = -ENODEV; - goto bail_disable; - } - } - - ret = pci_request_regions(pdev, IPATH_DRV_NAME); - if (ret) { - dev_info(&pdev->dev, "pci_request_regions unit %u fails: " - "err %d\n", dd->ipath_unit, -ret); - goto bail_disable; - } - - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (ret) { - /* - * if the 64 bit setup fails, try 32 bit. Some systems - * do not setup 64 bit maps on systems with 2GB or less - * memory installed. - */ - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) { - dev_info(&pdev->dev, - "Unable to set DMA mask for unit %u: %d\n", - dd->ipath_unit, ret); - goto bail_regions; - } else { - ipath_dbg("No 64bit DMA mask, used 32 bit mask\n"); - ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) - dev_info(&pdev->dev, - "Unable to set DMA consistent mask " - "for unit %u: %d\n", - dd->ipath_unit, ret); - - } - } else { - ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (ret) - dev_info(&pdev->dev, - "Unable to set DMA consistent mask " - "for unit %u: %d\n", - dd->ipath_unit, ret); - } - - pci_set_master(pdev); - - /* - * Save BARs to rewrite after device reset. Save all 64 bits of - * BAR, just in case. - */ - dd->ipath_pcibar0 = addr; - dd->ipath_pcibar1 = addr >> 32; - dd->ipath_deviceid = ent->device; /* save for later use */ - dd->ipath_vendorid = ent->vendor; - - /* setup the chip-specific functions, as early as possible. */ - switch (ent->device) { - case PCI_DEVICE_ID_INFINIPATH_HT: - ipath_init_iba6110_funcs(dd); - break; - - default: - ipath_dev_err(dd, "Found unknown QLogic deviceid 0x%x, " - "failing\n", ent->device); - return -ENODEV; - } - - for (j = 0; j < 6; j++) { - if (!pdev->resource[j].start) - continue; - ipath_cdbg(VERBOSE, "BAR %d %pR, len %llx\n", - j, &pdev->resource[j], - (unsigned long long)pci_resource_len(pdev, j)); - } - - if (!addr) { - ipath_dev_err(dd, "No valid address in BAR 0!\n"); - ret = -ENODEV; - goto bail_regions; - } - - dd->ipath_pcirev = pdev->revision; - -#if defined(__powerpc__) - /* There isn't a generic way to specify writethrough mappings */ - dd->ipath_kregbase = __ioremap(addr, len, - (_PAGE_NO_CACHE|_PAGE_WRITETHRU)); -#else - /* XXX: split this properly to enable on PAT */ - dd->ipath_kregbase = ioremap_nocache(addr, len); -#endif - - if (!dd->ipath_kregbase) { - ipath_dbg("Unable to map io addr %llx to kvirt, failing\n", - addr); - ret = -ENOMEM; - goto bail_iounmap; - } - dd->ipath_kregend = (u64 __iomem *) - ((void __iomem *)dd->ipath_kregbase + len); - dd->ipath_physaddr = addr; /* used for io_remap, etc. */ - /* for user mmap */ - ipath_cdbg(VERBOSE, "mapped io addr %llx to kregbase %p\n", - addr, dd->ipath_kregbase); - - if (dd->ipath_f_bus(dd, pdev)) - ipath_dev_err(dd, "Failed to setup config space; " - "continuing anyway\n"); - - /* - * set up our interrupt handler; IRQF_SHARED probably not needed, - * since MSI interrupts shouldn't be shared but won't hurt for now. - * check 0 irq after we return from chip-specific bus setup, since - * that can affect this due to setup - */ - if (!dd->ipath_irq) - ipath_dev_err(dd, "irq is 0, BIOS error? Interrupts won't " - "work\n"); - else { - ret = request_irq(dd->ipath_irq, ipath_intr, IRQF_SHARED, - IPATH_DRV_NAME, dd); - if (ret) { - ipath_dev_err(dd, "Couldn't setup irq handler, " - "irq=%d: %d\n", dd->ipath_irq, ret); - goto bail_iounmap; - } - } - - ret = ipath_init_chip(dd, 0); /* do the chip-specific init */ - if (ret) - goto bail_irqsetup; - - ret = ipath_enable_wc(dd); - - if (ret) - ret = 0; - - ipath_verify_pioperf(dd); - - ipath_device_create_group(&pdev->dev, dd); - ipathfs_add_device(dd); - ipath_user_add(dd); - ipath_diag_add(dd); - ipath_register_ib_device(dd); - - goto bail; - -bail_irqsetup: - cleanup_device(dd); - - if (dd->ipath_irq) - dd->ipath_f_free_irq(dd); - - if (dd->ipath_f_cleanup) - dd->ipath_f_cleanup(dd); - -bail_iounmap: - iounmap((volatile void __iomem *) dd->ipath_kregbase); - -bail_regions: - pci_release_regions(pdev); - -bail_disable: - pci_disable_device(pdev); - -bail_devdata: - ipath_free_devdata(pdev, dd); - -bail: - return ret; -} - -static void cleanup_device(struct ipath_devdata *dd) -{ - int port; - struct ipath_portdata **tmp; - unsigned long flags; - - if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) { - /* can't do anything more with chip; needs re-init */ - *dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT; - if (dd->ipath_kregbase) { - /* - * if we haven't already cleaned up before these are - * to ensure any register reads/writes "fail" until - * re-init - */ - dd->ipath_kregbase = NULL; - dd->ipath_uregbase = 0; - dd->ipath_sregbase = 0; - dd->ipath_cregbase = 0; - dd->ipath_kregsize = 0; - } - ipath_disable_wc(dd); - } - - if (dd->ipath_spectriggerhit) - dev_info(&dd->pcidev->dev, "%lu special trigger hits\n", - dd->ipath_spectriggerhit); - - if (dd->ipath_pioavailregs_dma) { - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - (void *) dd->ipath_pioavailregs_dma, - dd->ipath_pioavailregs_phys); - dd->ipath_pioavailregs_dma = NULL; - } - if (dd->ipath_dummy_hdrq) { - dma_free_coherent(&dd->pcidev->dev, - dd->ipath_pd[0]->port_rcvhdrq_size, - dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys); - dd->ipath_dummy_hdrq = NULL; - } - - if (dd->ipath_pageshadow) { - struct page **tmpp = dd->ipath_pageshadow; - dma_addr_t *tmpd = dd->ipath_physshadow; - int i, cnt = 0; - - ipath_cdbg(VERBOSE, "Unlocking any expTID pages still " - "locked\n"); - for (port = 0; port < dd->ipath_cfgports; port++) { - int port_tidbase = port * dd->ipath_rcvtidcnt; - int maxtid = port_tidbase + dd->ipath_rcvtidcnt; - for (i = port_tidbase; i < maxtid; i++) { - if (!tmpp[i]) - continue; - pci_unmap_page(dd->pcidev, tmpd[i], - PAGE_SIZE, PCI_DMA_FROMDEVICE); - ipath_release_user_pages(&tmpp[i], 1); - tmpp[i] = NULL; - cnt++; - } - } - if (cnt) { - ipath_stats.sps_pageunlocks += cnt; - ipath_cdbg(VERBOSE, "There were still %u expTID " - "entries locked\n", cnt); - } - if (ipath_stats.sps_pagelocks || - ipath_stats.sps_pageunlocks) - ipath_cdbg(VERBOSE, "%llu pages locked, %llu " - "unlocked via ipath_m{un}lock\n", - (unsigned long long) - ipath_stats.sps_pagelocks, - (unsigned long long) - ipath_stats.sps_pageunlocks); - - ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n", - dd->ipath_pageshadow); - tmpp = dd->ipath_pageshadow; - dd->ipath_pageshadow = NULL; - vfree(tmpp); - - dd->ipath_egrtidbase = NULL; - } - - /* - * free any resources still in use (usually just kernel ports) - * at unload; we do for portcnt, because that's what we allocate. - * We acquire lock to be really paranoid that ipath_pd isn't being - * accessed from some interrupt-related code (that should not happen, - * but best to be sure). - */ - spin_lock_irqsave(&dd->ipath_uctxt_lock, flags); - tmp = dd->ipath_pd; - dd->ipath_pd = NULL; - spin_unlock_irqrestore(&dd->ipath_uctxt_lock, flags); - for (port = 0; port < dd->ipath_portcnt; port++) { - struct ipath_portdata *pd = tmp[port]; - tmp[port] = NULL; /* debugging paranoia */ - ipath_free_pddata(dd, pd); - } - kfree(tmp); -} - -static void ipath_remove_one(struct pci_dev *pdev) -{ - struct ipath_devdata *dd = pci_get_drvdata(pdev); - - ipath_cdbg(VERBOSE, "removing, pdev=%p, dd=%p\n", pdev, dd); - - /* - * disable the IB link early, to be sure no new packets arrive, which - * complicates the shutdown process - */ - ipath_shutdown_device(dd); - - flush_workqueue(ib_wq); - - if (dd->verbs_dev) - ipath_unregister_ib_device(dd->verbs_dev); - - ipath_diag_remove(dd); - ipath_user_remove(dd); - ipathfs_remove_device(dd); - ipath_device_remove_group(&pdev->dev, dd); - - ipath_cdbg(VERBOSE, "Releasing pci memory regions, dd %p, " - "unit %u\n", dd, (u32) dd->ipath_unit); - - cleanup_device(dd); - - /* - * turn off rcv, send, and interrupts for all ports, all drivers - * should also hard reset the chip here? - * free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs - * for all versions of the driver, if they were allocated - */ - if (dd->ipath_irq) { - ipath_cdbg(VERBOSE, "unit %u free irq %d\n", - dd->ipath_unit, dd->ipath_irq); - dd->ipath_f_free_irq(dd); - } else - ipath_dbg("irq is 0, not doing free_irq " - "for unit %u\n", dd->ipath_unit); - /* - * we check for NULL here, because it's outside - * the kregbase check, and we need to call it - * after the free_irq. Thus it's possible that - * the function pointers were never initialized. - */ - if (dd->ipath_f_cleanup) - /* clean up chip-specific stuff */ - dd->ipath_f_cleanup(dd); - - ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", dd->ipath_kregbase); - iounmap((volatile void __iomem *) dd->ipath_kregbase); - pci_release_regions(pdev); - ipath_cdbg(VERBOSE, "calling pci_disable_device\n"); - pci_disable_device(pdev); - - ipath_free_devdata(pdev, dd); -} - -/* general driver use */ -DEFINE_MUTEX(ipath_mutex); - -static DEFINE_SPINLOCK(ipath_pioavail_lock); - -/** - * ipath_disarm_piobufs - cancel a range of PIO buffers - * @dd: the infinipath device - * @first: the first PIO buffer to cancel - * @cnt: the number of PIO buffers to cancel - * - * cancel a range of PIO buffers, used when they might be armed, but - * not triggered. Used at init to ensure buffer state, and also user - * process close, in case it died while writing to a PIO buffer - * Also after errors. - */ -void ipath_disarm_piobufs(struct ipath_devdata *dd, unsigned first, - unsigned cnt) -{ - unsigned i, last = first + cnt; - unsigned long flags; - - ipath_cdbg(PKT, "disarm %u PIObufs first=%u\n", cnt, first); - for (i = first; i < last; i++) { - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - /* - * The disarm-related bits are write-only, so it - * is ok to OR them in with our copy of sendctrl - * while we hold the lock. - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl | INFINIPATH_S_DISARM | - (i << INFINIPATH_S_DISARMPIOBUF_SHIFT)); - /* can't disarm bufs back-to-back per iba7220 spec */ - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - } - /* on some older chips, update may not happen after cancel */ - ipath_force_pio_avail_update(dd); -} - -/** - * ipath_wait_linkstate - wait for an IB link state change to occur - * @dd: the infinipath device - * @state: the state to wait for - * @msecs: the number of milliseconds to wait - * - * wait up to msecs milliseconds for IB link state change to occur for - * now, take the easy polling route. Currently used only by - * ipath_set_linkstate. Returns 0 if state reached, otherwise - * -ETIMEDOUT state can have multiple states set, for any of several - * transitions. - */ -int ipath_wait_linkstate(struct ipath_devdata *dd, u32 state, int msecs) -{ - dd->ipath_state_wanted = state; - wait_event_interruptible_timeout(ipath_state_wait, - (dd->ipath_flags & state), - msecs_to_jiffies(msecs)); - dd->ipath_state_wanted = 0; - - if (!(dd->ipath_flags & state)) { - u64 val; - ipath_cdbg(VERBOSE, "Didn't reach linkstate %s within %u" - " ms\n", - /* test INIT ahead of DOWN, both can be set */ - (state & IPATH_LINKINIT) ? "INIT" : - ((state & IPATH_LINKDOWN) ? "DOWN" : - ((state & IPATH_LINKARMED) ? "ARM" : "ACTIVE")), - msecs); - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); - ipath_cdbg(VERBOSE, "ibcc=%llx ibcstatus=%llx (%s)\n", - (unsigned long long) ipath_read_kreg64( - dd, dd->ipath_kregs->kr_ibcctrl), - (unsigned long long) val, - ipath_ibcstatus_str[val & dd->ibcs_lts_mask]); - } - return (dd->ipath_flags & state) ? 0 : -ETIMEDOUT; -} - -static void decode_sdma_errs(struct ipath_devdata *dd, ipath_err_t err, - char *buf, size_t blen) -{ - static const struct { - ipath_err_t err; - const char *msg; - } errs[] = { - { INFINIPATH_E_SDMAGENMISMATCH, "SDmaGenMismatch" }, - { INFINIPATH_E_SDMAOUTOFBOUND, "SDmaOutOfBound" }, - { INFINIPATH_E_SDMATAILOUTOFBOUND, "SDmaTailOutOfBound" }, - { INFINIPATH_E_SDMABASE, "SDmaBase" }, - { INFINIPATH_E_SDMA1STDESC, "SDma1stDesc" }, - { INFINIPATH_E_SDMARPYTAG, "SDmaRpyTag" }, - { INFINIPATH_E_SDMADWEN, "SDmaDwEn" }, - { INFINIPATH_E_SDMAMISSINGDW, "SDmaMissingDw" }, - { INFINIPATH_E_SDMAUNEXPDATA, "SDmaUnexpData" }, - { INFINIPATH_E_SDMADESCADDRMISALIGN, "SDmaDescAddrMisalign" }, - { INFINIPATH_E_SENDBUFMISUSE, "SendBufMisuse" }, - { INFINIPATH_E_SDMADISABLED, "SDmaDisabled" }, - }; - int i; - int expected; - size_t bidx = 0; - - for (i = 0; i < ARRAY_SIZE(errs); i++) { - expected = (errs[i].err != INFINIPATH_E_SDMADISABLED) ? 0 : - test_bit(IPATH_SDMA_ABORTING, &dd->ipath_sdma_status); - if ((err & errs[i].err) && !expected) - bidx += snprintf(buf + bidx, blen - bidx, - "%s ", errs[i].msg); - } -} - -/* - * Decode the error status into strings, deciding whether to always - * print * it or not depending on "normal packet errors" vs everything - * else. Return 1 if "real" errors, otherwise 0 if only packet - * errors, so caller can decide what to print with the string. - */ -int ipath_decode_err(struct ipath_devdata *dd, char *buf, size_t blen, - ipath_err_t err) -{ - int iserr = 1; - *buf = '\0'; - if (err & INFINIPATH_E_PKTERRS) { - if (!(err & ~INFINIPATH_E_PKTERRS)) - iserr = 0; // if only packet errors. - if (ipath_debug & __IPATH_ERRPKTDBG) { - if (err & INFINIPATH_E_REBP) - strlcat(buf, "EBP ", blen); - if (err & INFINIPATH_E_RVCRC) - strlcat(buf, "VCRC ", blen); - if (err & INFINIPATH_E_RICRC) { - strlcat(buf, "CRC ", blen); - // clear for check below, so only once - err &= INFINIPATH_E_RICRC; - } - if (err & INFINIPATH_E_RSHORTPKTLEN) - strlcat(buf, "rshortpktlen ", blen); - if (err & INFINIPATH_E_SDROPPEDDATAPKT) - strlcat(buf, "sdroppeddatapkt ", blen); - if (err & INFINIPATH_E_SPKTLEN) - strlcat(buf, "spktlen ", blen); - } - if ((err & INFINIPATH_E_RICRC) && - !(err&(INFINIPATH_E_RVCRC|INFINIPATH_E_REBP))) - strlcat(buf, "CRC ", blen); - if (!iserr) - goto done; - } - if (err & INFINIPATH_E_RHDRLEN) - strlcat(buf, "rhdrlen ", blen); - if (err & INFINIPATH_E_RBADTID) - strlcat(buf, "rbadtid ", blen); - if (err & INFINIPATH_E_RBADVERSION) - strlcat(buf, "rbadversion ", blen); - if (err & INFINIPATH_E_RHDR) - strlcat(buf, "rhdr ", blen); - if (err & INFINIPATH_E_SENDSPECIALTRIGGER) - strlcat(buf, "sendspecialtrigger ", blen); - if (err & INFINIPATH_E_RLONGPKTLEN) - strlcat(buf, "rlongpktlen ", blen); - if (err & INFINIPATH_E_RMAXPKTLEN) - strlcat(buf, "rmaxpktlen ", blen); - if (err & INFINIPATH_E_RMINPKTLEN) - strlcat(buf, "rminpktlen ", blen); - if (err & INFINIPATH_E_SMINPKTLEN) - strlcat(buf, "sminpktlen ", blen); - if (err & INFINIPATH_E_RFORMATERR) - strlcat(buf, "rformaterr ", blen); - if (err & INFINIPATH_E_RUNSUPVL) - strlcat(buf, "runsupvl ", blen); - if (err & INFINIPATH_E_RUNEXPCHAR) - strlcat(buf, "runexpchar ", blen); - if (err & INFINIPATH_E_RIBFLOW) - strlcat(buf, "ribflow ", blen); - if (err & INFINIPATH_E_SUNDERRUN) - strlcat(buf, "sunderrun ", blen); - if (err & INFINIPATH_E_SPIOARMLAUNCH) - strlcat(buf, "spioarmlaunch ", blen); - if (err & INFINIPATH_E_SUNEXPERRPKTNUM) - strlcat(buf, "sunexperrpktnum ", blen); - if (err & INFINIPATH_E_SDROPPEDSMPPKT) - strlcat(buf, "sdroppedsmppkt ", blen); - if (err & INFINIPATH_E_SMAXPKTLEN) - strlcat(buf, "smaxpktlen ", blen); - if (err & INFINIPATH_E_SUNSUPVL) - strlcat(buf, "sunsupVL ", blen); - if (err & INFINIPATH_E_INVALIDADDR) - strlcat(buf, "invalidaddr ", blen); - if (err & INFINIPATH_E_RRCVEGRFULL) - strlcat(buf, "rcvegrfull ", blen); - if (err & INFINIPATH_E_RRCVHDRFULL) - strlcat(buf, "rcvhdrfull ", blen); - if (err & INFINIPATH_E_IBSTATUSCHANGED) - strlcat(buf, "ibcstatuschg ", blen); - if (err & INFINIPATH_E_RIBLOSTLINK) - strlcat(buf, "riblostlink ", blen); - if (err & INFINIPATH_E_HARDWARE) - strlcat(buf, "hardware ", blen); - if (err & INFINIPATH_E_RESET) - strlcat(buf, "reset ", blen); - if (err & INFINIPATH_E_SDMAERRS) - decode_sdma_errs(dd, err, buf, blen); - if (err & INFINIPATH_E_INVALIDEEPCMD) - strlcat(buf, "invalideepromcmd ", blen); -done: - return iserr; -} - -/** - * get_rhf_errstring - decode RHF errors - * @err: the err number - * @msg: the output buffer - * @len: the length of the output buffer - * - * only used one place now, may want more later - */ -static void get_rhf_errstring(u32 err, char *msg, size_t len) -{ - /* if no errors, and so don't need to check what's first */ - *msg = '\0'; - - if (err & INFINIPATH_RHF_H_ICRCERR) - strlcat(msg, "icrcerr ", len); - if (err & INFINIPATH_RHF_H_VCRCERR) - strlcat(msg, "vcrcerr ", len); - if (err & INFINIPATH_RHF_H_PARITYERR) - strlcat(msg, "parityerr ", len); - if (err & INFINIPATH_RHF_H_LENERR) - strlcat(msg, "lenerr ", len); - if (err & INFINIPATH_RHF_H_MTUERR) - strlcat(msg, "mtuerr ", len); - if (err & INFINIPATH_RHF_H_IHDRERR) - /* infinipath hdr checksum error */ - strlcat(msg, "ipathhdrerr ", len); - if (err & INFINIPATH_RHF_H_TIDERR) - strlcat(msg, "tiderr ", len); - if (err & INFINIPATH_RHF_H_MKERR) - /* bad port, offset, etc. */ - strlcat(msg, "invalid ipathhdr ", len); - if (err & INFINIPATH_RHF_H_IBERR) - strlcat(msg, "iberr ", len); - if (err & INFINIPATH_RHF_L_SWA) - strlcat(msg, "swA ", len); - if (err & INFINIPATH_RHF_L_SWB) - strlcat(msg, "swB ", len); -} - -/** - * ipath_get_egrbuf - get an eager buffer - * @dd: the infinipath device - * @bufnum: the eager buffer to get - * - * must only be called if ipath_pd[port] is known to be allocated - */ -static inline void *ipath_get_egrbuf(struct ipath_devdata *dd, u32 bufnum) -{ - return dd->ipath_port0_skbinfo ? - (void *) dd->ipath_port0_skbinfo[bufnum].skb->data : NULL; -} - -/** - * ipath_alloc_skb - allocate an skb and buffer with possible constraints - * @dd: the infinipath device - * @gfp_mask: the sk_buff SFP mask - */ -struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, - gfp_t gfp_mask) -{ - struct sk_buff *skb; - u32 len; - - /* - * Only fully supported way to handle this is to allocate lots - * extra, align as needed, and then do skb_reserve(). That wastes - * a lot of memory... I'll have to hack this into infinipath_copy - * also. - */ - - /* - * We need 2 extra bytes for ipath_ether data sent in the - * key header. In order to keep everything dword aligned, - * we'll reserve 4 bytes. - */ - len = dd->ipath_ibmaxlen + 4; - - if (dd->ipath_flags & IPATH_4BYTE_TID) { - /* We need a 2KB multiple alignment, and there is no way - * to do it except to allocate extra and then skb_reserve - * enough to bring it up to the right alignment. - */ - len += 2047; - } - - skb = __dev_alloc_skb(len, gfp_mask); - if (!skb) { - ipath_dev_err(dd, "Failed to allocate skbuff, length %u\n", - len); - goto bail; - } - - skb_reserve(skb, 4); - - if (dd->ipath_flags & IPATH_4BYTE_TID) { - u32 una = (unsigned long)skb->data & 2047; - if (una) - skb_reserve(skb, 2048 - una); - } - -bail: - return skb; -} - -static void ipath_rcv_hdrerr(struct ipath_devdata *dd, - u32 eflags, - u32 l, - u32 etail, - __le32 *rhf_addr, - struct ipath_message_header *hdr) -{ - char emsg[128]; - - get_rhf_errstring(eflags, emsg, sizeof emsg); - ipath_cdbg(PKT, "RHFerrs %x hdrqtail=%x typ=%u " - "tlen=%x opcode=%x egridx=%x: %s\n", - eflags, l, - ipath_hdrget_rcv_type(rhf_addr), - ipath_hdrget_length_in_bytes(rhf_addr), - be32_to_cpu(hdr->bth[0]) >> 24, - etail, emsg); - - /* Count local link integrity errors. */ - if (eflags & (INFINIPATH_RHF_H_ICRCERR | INFINIPATH_RHF_H_VCRCERR)) { - u8 n = (dd->ipath_ibcctrl >> - INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; - - if (++dd->ipath_lli_counter > n) { - dd->ipath_lli_counter = 0; - dd->ipath_lli_errors++; - } - } -} - -/* - * ipath_kreceive - receive a packet - * @pd: the infinipath port - * - * called from interrupt handler for errors or receive interrupt - */ -void ipath_kreceive(struct ipath_portdata *pd) -{ - struct ipath_devdata *dd = pd->port_dd; - __le32 *rhf_addr; - void *ebuf; - const u32 rsize = dd->ipath_rcvhdrentsize; /* words */ - const u32 maxcnt = dd->ipath_rcvhdrcnt * rsize; /* words */ - u32 etail = -1, l, hdrqtail; - struct ipath_message_header *hdr; - u32 eflags, i, etype, tlen, pkttot = 0, updegr = 0, reloop = 0; - static u64 totcalls; /* stats, may eventually remove */ - int last; - - l = pd->port_head; - rhf_addr = (__le32 *) pd->port_rcvhdrq + l + dd->ipath_rhf_offset; - if (dd->ipath_flags & IPATH_NODMA_RTAIL) { - u32 seq = ipath_hdrget_seq(rhf_addr); - - if (seq != pd->port_seq_cnt) - goto bail; - hdrqtail = 0; - } else { - hdrqtail = ipath_get_rcvhdrtail(pd); - if (l == hdrqtail) - goto bail; - smp_rmb(); - } - -reloop: - for (last = 0, i = 1; !last; i += !last) { - hdr = dd->ipath_f_get_msgheader(dd, rhf_addr); - eflags = ipath_hdrget_err_flags(rhf_addr); - etype = ipath_hdrget_rcv_type(rhf_addr); - /* total length */ - tlen = ipath_hdrget_length_in_bytes(rhf_addr); - ebuf = NULL; - if ((dd->ipath_flags & IPATH_NODMA_RTAIL) ? - ipath_hdrget_use_egr_buf(rhf_addr) : - (etype != RCVHQ_RCV_TYPE_EXPECTED)) { - /* - * It turns out that the chip uses an eager buffer - * for all non-expected packets, whether it "needs" - * one or not. So always get the index, but don't - * set ebuf (so we try to copy data) unless the - * length requires it. - */ - etail = ipath_hdrget_index(rhf_addr); - updegr = 1; - if (tlen > sizeof(*hdr) || - etype == RCVHQ_RCV_TYPE_NON_KD) - ebuf = ipath_get_egrbuf(dd, etail); - } - - /* - * both tiderr and ipathhdrerr are set for all plain IB - * packets; only ipathhdrerr should be set. - */ - - if (etype != RCVHQ_RCV_TYPE_NON_KD && - etype != RCVHQ_RCV_TYPE_ERROR && - ipath_hdrget_ipath_ver(hdr->iph.ver_port_tid_offset) != - IPS_PROTO_VERSION) - ipath_cdbg(PKT, "Bad InfiniPath protocol version " - "%x\n", etype); - - if (unlikely(eflags)) - ipath_rcv_hdrerr(dd, eflags, l, etail, rhf_addr, hdr); - else if (etype == RCVHQ_RCV_TYPE_NON_KD) { - ipath_ib_rcv(dd->verbs_dev, (u32 *)hdr, ebuf, tlen); - if (dd->ipath_lli_counter) - dd->ipath_lli_counter--; - } else if (etype == RCVHQ_RCV_TYPE_EAGER) { - u8 opcode = be32_to_cpu(hdr->bth[0]) >> 24; - u32 qp = be32_to_cpu(hdr->bth[1]) & 0xffffff; - ipath_cdbg(PKT, "typ %x, opcode %x (eager, " - "qp=%x), len %x; ignored\n", - etype, opcode, qp, tlen); - } else if (etype == RCVHQ_RCV_TYPE_EXPECTED) { - ipath_dbg("Bug: Expected TID, opcode %x; ignored\n", - be32_to_cpu(hdr->bth[0]) >> 24); - } else { - /* - * error packet, type of error unknown. - * Probably type 3, but we don't know, so don't - * even try to print the opcode, etc. - * Usually caused by a "bad packet", that has no - * BTH, when the LRH says it should. - */ - ipath_cdbg(ERRPKT, "Error Pkt, but no eflags! egrbuf" - " %x, len %x hdrq+%x rhf: %Lx\n", - etail, tlen, l, (unsigned long long) - le64_to_cpu(*(__le64 *) rhf_addr)); - if (ipath_debug & __IPATH_ERRPKTDBG) { - u32 j, *d, dw = rsize-2; - if (rsize > (tlen>>2)) - dw = tlen>>2; - d = (u32 *)hdr; - printk(KERN_DEBUG "EPkt rcvhdr(%x dw):\n", - dw); - for (j = 0; j < dw; j++) - printk(KERN_DEBUG "%8x%s", d[j], - (j%8) == 7 ? "\n" : " "); - printk(KERN_DEBUG ".\n"); - } - } - l += rsize; - if (l >= maxcnt) - l = 0; - rhf_addr = (__le32 *) pd->port_rcvhdrq + - l + dd->ipath_rhf_offset; - if (dd->ipath_flags & IPATH_NODMA_RTAIL) { - u32 seq = ipath_hdrget_seq(rhf_addr); - - if (++pd->port_seq_cnt > 13) - pd->port_seq_cnt = 1; - if (seq != pd->port_seq_cnt) - last = 1; - } else if (l == hdrqtail) { - last = 1; - } - /* - * update head regs on last packet, and every 16 packets. - * Reduce bus traffic, while still trying to prevent - * rcvhdrq overflows, for when the queue is nearly full - */ - if (last || !(i & 0xf)) { - u64 lval = l; - - /* request IBA6120 and 7220 interrupt only on last */ - if (last) - lval |= dd->ipath_rhdrhead_intr_off; - ipath_write_ureg(dd, ur_rcvhdrhead, lval, - pd->port_port); - if (updegr) { - ipath_write_ureg(dd, ur_rcvegrindexhead, - etail, pd->port_port); - updegr = 0; - } - } - } - - if (!dd->ipath_rhdrhead_intr_off && !reloop && - !(dd->ipath_flags & IPATH_NODMA_RTAIL)) { - /* IBA6110 workaround; we can have a race clearing chip - * interrupt with another interrupt about to be delivered, - * and can clear it before it is delivered on the GPIO - * workaround. By doing the extra check here for the - * in-memory tail register updating while we were doing - * earlier packets, we "almost" guarantee we have covered - * that case. - */ - u32 hqtail = ipath_get_rcvhdrtail(pd); - if (hqtail != hdrqtail) { - hdrqtail = hqtail; - reloop = 1; /* loop 1 extra time at most */ - goto reloop; - } - } - - pkttot += i; - - pd->port_head = l; - - if (pkttot > ipath_stats.sps_maxpkts_call) - ipath_stats.sps_maxpkts_call = pkttot; - ipath_stats.sps_port0pkts += pkttot; - ipath_stats.sps_avgpkts_call = - ipath_stats.sps_port0pkts / ++totcalls; - -bail:; -} - -/** - * ipath_update_pio_bufs - update shadow copy of the PIO availability map - * @dd: the infinipath device - * - * called whenever our local copy indicates we have run out of send buffers - * NOTE: This can be called from interrupt context by some code - * and from non-interrupt context by ipath_getpiobuf(). - */ - -static void ipath_update_pio_bufs(struct ipath_devdata *dd) -{ - unsigned long flags; - int i; - const unsigned piobregs = (unsigned)dd->ipath_pioavregs; - - /* If the generation (check) bits have changed, then we update the - * busy bit for the corresponding PIO buffer. This algorithm will - * modify positions to the value they already have in some cases - * (i.e., no change), but it's faster than changing only the bits - * that have changed. - * - * We would like to do this atomicly, to avoid spinlocks in the - * critical send path, but that's not really possible, given the - * type of changes, and that this routine could be called on - * multiple cpu's simultaneously, so we lock in this routine only, - * to avoid conflicting updates; all we change is the shadow, and - * it's a single 64 bit memory location, so by definition the update - * is atomic in terms of what other cpu's can see in testing the - * bits. The spin_lock overhead isn't too bad, since it only - * happens when all buffers are in use, so only cpu overhead, not - * latency or bandwidth is affected. - */ - if (!dd->ipath_pioavailregs_dma) { - ipath_dbg("Update shadow pioavail, but regs_dma NULL!\n"); - return; - } - if (ipath_debug & __IPATH_VERBDBG) { - /* only if packet debug and verbose */ - volatile __le64 *dma = dd->ipath_pioavailregs_dma; - unsigned long *shadow = dd->ipath_pioavailshadow; - - ipath_cdbg(PKT, "Refill avail, dma0=%llx shad0=%lx, " - "d1=%llx s1=%lx, d2=%llx s2=%lx, d3=%llx " - "s3=%lx\n", - (unsigned long long) le64_to_cpu(dma[0]), - shadow[0], - (unsigned long long) le64_to_cpu(dma[1]), - shadow[1], - (unsigned long long) le64_to_cpu(dma[2]), - shadow[2], - (unsigned long long) le64_to_cpu(dma[3]), - shadow[3]); - if (piobregs > 4) - ipath_cdbg( - PKT, "2nd group, dma4=%llx shad4=%lx, " - "d5=%llx s5=%lx, d6=%llx s6=%lx, " - "d7=%llx s7=%lx\n", - (unsigned long long) le64_to_cpu(dma[4]), - shadow[4], - (unsigned long long) le64_to_cpu(dma[5]), - shadow[5], - (unsigned long long) le64_to_cpu(dma[6]), - shadow[6], - (unsigned long long) le64_to_cpu(dma[7]), - shadow[7]); - } - spin_lock_irqsave(&ipath_pioavail_lock, flags); - for (i = 0; i < piobregs; i++) { - u64 pchbusy, pchg, piov, pnew; - /* - * Chip Errata: bug 6641; even and odd qwords>3 are swapped - */ - if (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) - piov = le64_to_cpu(dd->ipath_pioavailregs_dma[i ^ 1]); - else - piov = le64_to_cpu(dd->ipath_pioavailregs_dma[i]); - pchg = dd->ipath_pioavailkernel[i] & - ~(dd->ipath_pioavailshadow[i] ^ piov); - pchbusy = pchg << INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT; - if (pchg && (pchbusy & dd->ipath_pioavailshadow[i])) { - pnew = dd->ipath_pioavailshadow[i] & ~pchbusy; - pnew |= piov & pchbusy; - dd->ipath_pioavailshadow[i] = pnew; - } - } - spin_unlock_irqrestore(&ipath_pioavail_lock, flags); -} - -/* - * used to force update of pioavailshadow if we can't get a pio buffer. - * Needed primarily due to exitting freeze mode after recovering - * from errors. Done lazily, because it's safer (known to not - * be writing pio buffers). - */ -static void ipath_reset_availshadow(struct ipath_devdata *dd) -{ - int i, im; - unsigned long flags; - - spin_lock_irqsave(&ipath_pioavail_lock, flags); - for (i = 0; i < dd->ipath_pioavregs; i++) { - u64 val, oldval; - /* deal with 6110 chip bug on high register #s */ - im = (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) ? - i ^ 1 : i; - val = le64_to_cpu(dd->ipath_pioavailregs_dma[im]); - /* - * busy out the buffers not in the kernel avail list, - * without changing the generation bits. - */ - oldval = dd->ipath_pioavailshadow[i]; - dd->ipath_pioavailshadow[i] = val | - ((~dd->ipath_pioavailkernel[i] << - INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT) & - 0xaaaaaaaaaaaaaaaaULL); /* All BUSY bits in qword */ - if (oldval != dd->ipath_pioavailshadow[i]) - ipath_dbg("shadow[%d] was %Lx, now %lx\n", - i, (unsigned long long) oldval, - dd->ipath_pioavailshadow[i]); - } - spin_unlock_irqrestore(&ipath_pioavail_lock, flags); -} - -/** - * ipath_setrcvhdrsize - set the receive header size - * @dd: the infinipath device - * @rhdrsize: the receive header size - * - * called from user init code, and also layered driver init - */ -int ipath_setrcvhdrsize(struct ipath_devdata *dd, unsigned rhdrsize) -{ - int ret = 0; - - if (dd->ipath_flags & IPATH_RCVHDRSZ_SET) { - if (dd->ipath_rcvhdrsize != rhdrsize) { - dev_info(&dd->pcidev->dev, - "Error: can't set protocol header " - "size %u, already %u\n", - rhdrsize, dd->ipath_rcvhdrsize); - ret = -EAGAIN; - } else - ipath_cdbg(VERBOSE, "Reuse same protocol header " - "size %u\n", dd->ipath_rcvhdrsize); - } else if (rhdrsize > (dd->ipath_rcvhdrentsize - - (sizeof(u64) / sizeof(u32)))) { - ipath_dbg("Error: can't set protocol header size %u " - "(> max %u)\n", rhdrsize, - dd->ipath_rcvhdrentsize - - (u32) (sizeof(u64) / sizeof(u32))); - ret = -EOVERFLOW; - } else { - dd->ipath_flags |= IPATH_RCVHDRSZ_SET; - dd->ipath_rcvhdrsize = rhdrsize; - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvhdrsize, - dd->ipath_rcvhdrsize); - ipath_cdbg(VERBOSE, "Set protocol header size to %u\n", - dd->ipath_rcvhdrsize); - } - return ret; -} - -/* - * debugging code and stats updates if no pio buffers available. - */ -static noinline void no_pio_bufs(struct ipath_devdata *dd) -{ - unsigned long *shadow = dd->ipath_pioavailshadow; - __le64 *dma = (__le64 *)dd->ipath_pioavailregs_dma; - - dd->ipath_upd_pio_shadow = 1; - - /* - * not atomic, but if we lose a stat count in a while, that's OK - */ - ipath_stats.sps_nopiobufs++; - if (!(++dd->ipath_consec_nopiobuf % 100000)) { - ipath_force_pio_avail_update(dd); /* at start */ - ipath_dbg("%u tries no piobufavail ts%lx; dmacopy: " - "%llx %llx %llx %llx\n" - "ipath shadow: %lx %lx %lx %lx\n", - dd->ipath_consec_nopiobuf, - (unsigned long)get_cycles(), - (unsigned long long) le64_to_cpu(dma[0]), - (unsigned long long) le64_to_cpu(dma[1]), - (unsigned long long) le64_to_cpu(dma[2]), - (unsigned long long) le64_to_cpu(dma[3]), - shadow[0], shadow[1], shadow[2], shadow[3]); - /* - * 4 buffers per byte, 4 registers above, cover rest - * below - */ - if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > - (sizeof(shadow[0]) * 4 * 4)) - ipath_dbg("2nd group: dmacopy: " - "%llx %llx %llx %llx\n" - "ipath shadow: %lx %lx %lx %lx\n", - (unsigned long long)le64_to_cpu(dma[4]), - (unsigned long long)le64_to_cpu(dma[5]), - (unsigned long long)le64_to_cpu(dma[6]), - (unsigned long long)le64_to_cpu(dma[7]), - shadow[4], shadow[5], shadow[6], shadow[7]); - - /* at end, so update likely happened */ - ipath_reset_availshadow(dd); - } -} - -/* - * common code for normal driver pio buffer allocation, and reserved - * allocation. - * - * do appropriate marking as busy, etc. - * returns buffer number if one found (>=0), negative number is error. - */ -static u32 __iomem *ipath_getpiobuf_range(struct ipath_devdata *dd, - u32 *pbufnum, u32 first, u32 last, u32 firsti) -{ - int i, j, updated = 0; - unsigned piobcnt; - unsigned long flags; - unsigned long *shadow = dd->ipath_pioavailshadow; - u32 __iomem *buf; - - piobcnt = last - first; - if (dd->ipath_upd_pio_shadow) { - /* - * Minor optimization. If we had no buffers on last call, - * start out by doing the update; continue and do scan even - * if no buffers were updated, to be paranoid - */ - ipath_update_pio_bufs(dd); - updated++; - i = first; - } else - i = firsti; -rescan: - /* - * while test_and_set_bit() is atomic, we do that and then the - * change_bit(), and the pair is not. See if this is the cause - * of the remaining armlaunch errors. - */ - spin_lock_irqsave(&ipath_pioavail_lock, flags); - for (j = 0; j < piobcnt; j++, i++) { - if (i >= last) - i = first; - if (__test_and_set_bit((2 * i) + 1, shadow)) - continue; - /* flip generation bit */ - __change_bit(2 * i, shadow); - break; - } - spin_unlock_irqrestore(&ipath_pioavail_lock, flags); - - if (j == piobcnt) { - if (!updated) { - /* - * first time through; shadow exhausted, but may be - * buffers available, try an update and then rescan. - */ - ipath_update_pio_bufs(dd); - updated++; - i = first; - goto rescan; - } else if (updated == 1 && piobcnt <= - ((dd->ipath_sendctrl - >> INFINIPATH_S_UPDTHRESH_SHIFT) & - INFINIPATH_S_UPDTHRESH_MASK)) { - /* - * for chips supporting and using the update - * threshold we need to force an update of the - * in-memory copy if the count is less than the - * thershold, then check one more time. - */ - ipath_force_pio_avail_update(dd); - ipath_update_pio_bufs(dd); - updated++; - i = first; - goto rescan; - } - - no_pio_bufs(dd); - buf = NULL; - } else { - if (i < dd->ipath_piobcnt2k) - buf = (u32 __iomem *) (dd->ipath_pio2kbase + - i * dd->ipath_palign); - else - buf = (u32 __iomem *) - (dd->ipath_pio4kbase + - (i - dd->ipath_piobcnt2k) * dd->ipath_4kalign); - if (pbufnum) - *pbufnum = i; - } - - return buf; -} - -/** - * ipath_getpiobuf - find an available pio buffer - * @dd: the infinipath device - * @plen: the size of the PIO buffer needed in 32-bit words - * @pbufnum: the buffer number is placed here - */ -u32 __iomem *ipath_getpiobuf(struct ipath_devdata *dd, u32 plen, u32 *pbufnum) -{ - u32 __iomem *buf; - u32 pnum, nbufs; - u32 first, lasti; - - if (plen + 1 >= IPATH_SMALLBUF_DWORDS) { - first = dd->ipath_piobcnt2k; - lasti = dd->ipath_lastpioindexl; - } else { - first = 0; - lasti = dd->ipath_lastpioindex; - } - nbufs = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; - buf = ipath_getpiobuf_range(dd, &pnum, first, nbufs, lasti); - - if (buf) { - /* - * Set next starting place. It's just an optimization, - * it doesn't matter who wins on this, so no locking - */ - if (plen + 1 >= IPATH_SMALLBUF_DWORDS) - dd->ipath_lastpioindexl = pnum + 1; - else - dd->ipath_lastpioindex = pnum + 1; - if (dd->ipath_upd_pio_shadow) - dd->ipath_upd_pio_shadow = 0; - if (dd->ipath_consec_nopiobuf) - dd->ipath_consec_nopiobuf = 0; - ipath_cdbg(VERBOSE, "Return piobuf%u %uk @ %p\n", - pnum, (pnum < dd->ipath_piobcnt2k) ? 2 : 4, buf); - if (pbufnum) - *pbufnum = pnum; - - } - return buf; -} - -/** - * ipath_chg_pioavailkernel - change which send buffers are available for kernel - * @dd: the infinipath device - * @start: the starting send buffer number - * @len: the number of send buffers - * @avail: true if the buffers are available for kernel use, false otherwise - */ -void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, - unsigned len, int avail) -{ - unsigned long flags; - unsigned end, cnt = 0; - - /* There are two bits per send buffer (busy and generation) */ - start *= 2; - end = start + len * 2; - - spin_lock_irqsave(&ipath_pioavail_lock, flags); - /* Set or clear the busy bit in the shadow. */ - while (start < end) { - if (avail) { - unsigned long dma; - int i, im; - /* - * the BUSY bit will never be set, because we disarm - * the user buffers before we hand them back to the - * kernel. We do have to make sure the generation - * bit is set correctly in shadow, since it could - * have changed many times while allocated to user. - * We can't use the bitmap functions on the full - * dma array because it is always little-endian, so - * we have to flip to host-order first. - * BITS_PER_LONG is slightly wrong, since it's - * always 64 bits per register in chip... - * We only work on 64 bit kernels, so that's OK. - */ - /* deal with 6110 chip bug on high register #s */ - i = start / BITS_PER_LONG; - im = (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) ? - i ^ 1 : i; - __clear_bit(INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT - + start, dd->ipath_pioavailshadow); - dma = (unsigned long) le64_to_cpu( - dd->ipath_pioavailregs_dma[im]); - if (test_bit((INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT - + start) % BITS_PER_LONG, &dma)) - __set_bit(INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT - + start, dd->ipath_pioavailshadow); - else - __clear_bit(INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT - + start, dd->ipath_pioavailshadow); - __set_bit(start, dd->ipath_pioavailkernel); - } else { - __set_bit(start + INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT, - dd->ipath_pioavailshadow); - __clear_bit(start, dd->ipath_pioavailkernel); - } - start += 2; - } - - if (dd->ipath_pioupd_thresh) { - end = 2 * (dd->ipath_piobcnt2k + dd->ipath_piobcnt4k); - cnt = bitmap_weight(dd->ipath_pioavailkernel, end); - } - spin_unlock_irqrestore(&ipath_pioavail_lock, flags); - - /* - * When moving buffers from kernel to user, if number assigned to - * the user is less than the pio update threshold, and threshold - * is supported (cnt was computed > 0), drop the update threshold - * so we update at least once per allocated number of buffers. - * In any case, if the kernel buffers are less than the threshold, - * drop the threshold. We don't bother increasing it, having once - * decreased it, since it would typically just cycle back and forth. - * If we don't decrease below buffers in use, we can wait a long - * time for an update, until some other context uses PIO buffers. - */ - if (!avail && len < cnt) - cnt = len; - if (cnt < dd->ipath_pioupd_thresh) { - dd->ipath_pioupd_thresh = cnt; - ipath_dbg("Decreased pio update threshold to %u\n", - dd->ipath_pioupd_thresh); - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~(INFINIPATH_S_UPDTHRESH_MASK - << INFINIPATH_S_UPDTHRESH_SHIFT); - dd->ipath_sendctrl |= dd->ipath_pioupd_thresh - << INFINIPATH_S_UPDTHRESH_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - } -} - -/** - * ipath_create_rcvhdrq - create a receive header queue - * @dd: the infinipath device - * @pd: the port data - * - * this must be contiguous memory (from an i/o perspective), and must be - * DMA'able (which means for some systems, it will go through an IOMMU, - * or be forced into a low address range). - */ -int ipath_create_rcvhdrq(struct ipath_devdata *dd, - struct ipath_portdata *pd) -{ - int ret = 0; - - if (!pd->port_rcvhdrq) { - dma_addr_t phys_hdrqtail; - gfp_t gfp_flags = GFP_USER | __GFP_COMP; - int amt = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * - sizeof(u32), PAGE_SIZE); - - pd->port_rcvhdrq = dma_alloc_coherent( - &dd->pcidev->dev, amt, &pd->port_rcvhdrq_phys, - gfp_flags); - - if (!pd->port_rcvhdrq) { - ipath_dev_err(dd, "attempt to allocate %d bytes " - "for port %u rcvhdrq failed\n", - amt, pd->port_port); - ret = -ENOMEM; - goto bail; - } - - if (!(dd->ipath_flags & IPATH_NODMA_RTAIL)) { - pd->port_rcvhdrtail_kvaddr = dma_alloc_coherent( - &dd->pcidev->dev, PAGE_SIZE, &phys_hdrqtail, - GFP_KERNEL); - if (!pd->port_rcvhdrtail_kvaddr) { - ipath_dev_err(dd, "attempt to allocate 1 page " - "for port %u rcvhdrqtailaddr " - "failed\n", pd->port_port); - ret = -ENOMEM; - dma_free_coherent(&dd->pcidev->dev, amt, - pd->port_rcvhdrq, - pd->port_rcvhdrq_phys); - pd->port_rcvhdrq = NULL; - goto bail; - } - pd->port_rcvhdrqtailaddr_phys = phys_hdrqtail; - ipath_cdbg(VERBOSE, "port %d hdrtailaddr, %llx " - "physical\n", pd->port_port, - (unsigned long long) phys_hdrqtail); - } - - pd->port_rcvhdrq_size = amt; - - ipath_cdbg(VERBOSE, "%d pages at %p (phys %lx) size=%lu " - "for port %u rcvhdr Q\n", - amt >> PAGE_SHIFT, pd->port_rcvhdrq, - (unsigned long) pd->port_rcvhdrq_phys, - (unsigned long) pd->port_rcvhdrq_size, - pd->port_port); - } else { - ipath_cdbg(VERBOSE, "reuse port %d rcvhdrq @%p %llx phys; " - "hdrtailaddr@%p %llx physical\n", - pd->port_port, pd->port_rcvhdrq, - (unsigned long long) pd->port_rcvhdrq_phys, - pd->port_rcvhdrtail_kvaddr, (unsigned long long) - pd->port_rcvhdrqtailaddr_phys); - } - /* clear for security and sanity on each use */ - memset(pd->port_rcvhdrq, 0, pd->port_rcvhdrq_size); - if (pd->port_rcvhdrtail_kvaddr) - memset(pd->port_rcvhdrtail_kvaddr, 0, PAGE_SIZE); - - /* - * tell chip each time we init it, even if we are re-using previous - * memory (we zero the register at process close) - */ - ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdrtailaddr, - pd->port_port, pd->port_rcvhdrqtailaddr_phys); - ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, - pd->port_port, pd->port_rcvhdrq_phys); - -bail: - return ret; -} - - -/* - * Flush all sends that might be in the ready to send state, as well as any - * that are in the process of being sent. Used whenever we need to be - * sure the send side is idle. Cleans up all buffer state by canceling - * all pio buffers, and issuing an abort, which cleans up anything in the - * launch fifo. The cancel is superfluous on some chip versions, but - * it's safer to always do it. - * PIOAvail bits are updated by the chip as if normal send had happened. - */ -void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl) -{ - unsigned long flags; - - if (dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) { - ipath_cdbg(VERBOSE, "Ignore while in autonegotiation\n"); - goto bail; - } - /* - * If we have SDMA, and it's not disabled, we have to kick off the - * abort state machine, provided we aren't already aborting. - * If we are in the process of aborting SDMA (!DISABLED, but ABORTING), - * we skip the rest of this routine. It is already "in progress" - */ - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) { - int skip_cancel; - unsigned long *statp = &dd->ipath_sdma_status; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - skip_cancel = - test_and_set_bit(IPATH_SDMA_ABORTING, statp) - && !test_bit(IPATH_SDMA_DISABLED, statp); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - if (skip_cancel) - goto bail; - } - - ipath_dbg("Cancelling all in-progress send buffers\n"); - - /* skip armlaunch errs for a while */ - dd->ipath_lastcancel = jiffies + HZ / 2; - - /* - * The abort bit is auto-clearing. We also don't want pioavail - * update happening during this, and we don't want any other - * sends going out, so turn those off for the duration. We read - * the scratch register to be sure that cancels and the abort - * have taken effect in the chip. Otherwise two parts are same - * as ipath_force_pio_avail_update() - */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~(INFINIPATH_S_PIOBUFAVAILUPD - | INFINIPATH_S_PIOENABLE); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl | INFINIPATH_S_ABORT); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* disarm all send buffers */ - ipath_disarm_piobufs(dd, 0, - dd->ipath_piobcnt2k + dd->ipath_piobcnt4k); - - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - set_bit(IPATH_SDMA_DISARMED, &dd->ipath_sdma_status); - - if (restore_sendctrl) { - /* else done by caller later if needed */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl |= INFINIPATH_S_PIOBUFAVAILUPD | - INFINIPATH_S_PIOENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - /* and again, be sure all have hit the chip */ - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - } - - if ((dd->ipath_flags & IPATH_HAS_SEND_DMA) && - !test_bit(IPATH_SDMA_DISABLED, &dd->ipath_sdma_status) && - test_bit(IPATH_SDMA_RUNNING, &dd->ipath_sdma_status)) { - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - /* only wait so long for intr */ - dd->ipath_sdma_abort_intr_timeout = jiffies + HZ; - dd->ipath_sdma_reset_wait = 200; - if (!test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - tasklet_hi_schedule(&dd->ipath_sdma_abort_task); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - } -bail:; -} - -/* - * Force an update of in-memory copy of the pioavail registers, when - * needed for any of a variety of reasons. We read the scratch register - * to make it highly likely that the update will have happened by the - * time we return. If already off (as in cancel_sends above), this - * routine is a nop, on the assumption that the caller will "do the - * right thing". - */ -void ipath_force_pio_avail_update(struct ipath_devdata *dd) -{ - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - if (dd->ipath_sendctrl & INFINIPATH_S_PIOBUFAVAILUPD) { - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl & ~INFINIPATH_S_PIOBUFAVAILUPD); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - } - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); -} - -static void ipath_set_ib_lstate(struct ipath_devdata *dd, int linkcmd, - int linitcmd) -{ - u64 mod_wd; - static const char *what[4] = { - [0] = "NOP", - [INFINIPATH_IBCC_LINKCMD_DOWN] = "DOWN", - [INFINIPATH_IBCC_LINKCMD_ARMED] = "ARMED", - [INFINIPATH_IBCC_LINKCMD_ACTIVE] = "ACTIVE" - }; - - if (linitcmd == INFINIPATH_IBCC_LINKINITCMD_DISABLE) { - /* - * If we are told to disable, note that so link-recovery - * code does not attempt to bring us back up. - */ - preempt_disable(); - dd->ipath_flags |= IPATH_IB_LINK_DISABLED; - preempt_enable(); - } else if (linitcmd) { - /* - * Any other linkinitcmd will lead to LINKDOWN and then - * to INIT (if all is well), so clear flag to let - * link-recovery code attempt to bring us back up. - */ - preempt_disable(); - dd->ipath_flags &= ~IPATH_IB_LINK_DISABLED; - preempt_enable(); - } - - mod_wd = (linkcmd << dd->ibcc_lc_shift) | - (linitcmd << INFINIPATH_IBCC_LINKINITCMD_SHIFT); - ipath_cdbg(VERBOSE, - "Moving unit %u to %s (initcmd=0x%x), current ltstate is %s\n", - dd->ipath_unit, what[linkcmd], linitcmd, - ipath_ibcstatus_str[ipath_ib_linktrstate(dd, - ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus))]); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl | mod_wd); - /* read from chip so write is flushed */ - (void) ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); -} - -int ipath_set_linkstate(struct ipath_devdata *dd, u8 newstate) -{ - u32 lstate; - int ret; - - switch (newstate) { - case IPATH_IB_LINKDOWN_ONLY: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_DOWN, 0); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKDOWN: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_DOWN, - INFINIPATH_IBCC_LINKINITCMD_POLL); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKDOWN_SLEEP: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_DOWN, - INFINIPATH_IBCC_LINKINITCMD_SLEEP); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKDOWN_DISABLE: - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_DOWN, - INFINIPATH_IBCC_LINKINITCMD_DISABLE); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINKARM: - if (dd->ipath_flags & IPATH_LINKARMED) { - ret = 0; - goto bail; - } - if (!(dd->ipath_flags & - (IPATH_LINKINIT | IPATH_LINKACTIVE))) { - ret = -EINVAL; - goto bail; - } - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ARMED, 0); - - /* - * Since the port can transition to ACTIVE by receiving - * a non VL 15 packet, wait for either state. - */ - lstate = IPATH_LINKARMED | IPATH_LINKACTIVE; - break; - - case IPATH_IB_LINKACTIVE: - if (dd->ipath_flags & IPATH_LINKACTIVE) { - ret = 0; - goto bail; - } - if (!(dd->ipath_flags & IPATH_LINKARMED)) { - ret = -EINVAL; - goto bail; - } - ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ACTIVE, 0); - lstate = IPATH_LINKACTIVE; - break; - - case IPATH_IB_LINK_LOOPBACK: - dev_info(&dd->pcidev->dev, "Enabling IB local loopback\n"); - dd->ipath_ibcctrl |= INFINIPATH_IBCC_LOOPBACK; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - - /* turn heartbeat off, as it causes loopback to fail */ - dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, - IPATH_IB_HRTBT_OFF); - /* don't wait */ - ret = 0; - goto bail; - - case IPATH_IB_LINK_EXTERNAL: - dev_info(&dd->pcidev->dev, - "Disabling IB local loopback (normal)\n"); - dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, - IPATH_IB_HRTBT_ON); - dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LOOPBACK; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - /* don't wait */ - ret = 0; - goto bail; - - /* - * Heartbeat can be explicitly enabled by the user via - * "hrtbt_enable" "file", and if disabled, trying to enable here - * will have no effect. Implicit changes (heartbeat off when - * loopback on, and vice versa) are included to ease testing. - */ - case IPATH_IB_LINK_HRTBT: - ret = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, - IPATH_IB_HRTBT_ON); - goto bail; - - case IPATH_IB_LINK_NO_HRTBT: - ret = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, - IPATH_IB_HRTBT_OFF); - goto bail; - - default: - ipath_dbg("Invalid linkstate 0x%x requested\n", newstate); - ret = -EINVAL; - goto bail; - } - ret = ipath_wait_linkstate(dd, lstate, 2000); - -bail: - return ret; -} - -/** - * ipath_set_mtu - set the MTU - * @dd: the infinipath device - * @arg: the new MTU - * - * we can handle "any" incoming size, the issue here is whether we - * need to restrict our outgoing size. For now, we don't do any - * sanity checking on this, and we don't deal with what happens to - * programs that are already running when the size changes. - * NOTE: changing the MTU will usually cause the IBC to go back to - * link INIT state... - */ -int ipath_set_mtu(struct ipath_devdata *dd, u16 arg) -{ - u32 piosize; - int changed = 0; - int ret; - - /* - * mtu is IB data payload max. It's the largest power of 2 less - * than piosize (or even larger, since it only really controls the - * largest we can receive; we can send the max of the mtu and - * piosize). We check that it's one of the valid IB sizes. - */ - if (arg != 256 && arg != 512 && arg != 1024 && arg != 2048 && - (arg != 4096 || !ipath_mtu4096)) { - ipath_dbg("Trying to set invalid mtu %u, failing\n", arg); - ret = -EINVAL; - goto bail; - } - if (dd->ipath_ibmtu == arg) { - ret = 0; /* same as current */ - goto bail; - } - - piosize = dd->ipath_ibmaxlen; - dd->ipath_ibmtu = arg; - - if (arg >= (piosize - IPATH_PIO_MAXIBHDR)) { - /* Only if it's not the initial value (or reset to it) */ - if (piosize != dd->ipath_init_ibmaxlen) { - if (arg > piosize && arg <= dd->ipath_init_ibmaxlen) - piosize = dd->ipath_init_ibmaxlen; - dd->ipath_ibmaxlen = piosize; - changed = 1; - } - } else if ((arg + IPATH_PIO_MAXIBHDR) != dd->ipath_ibmaxlen) { - piosize = arg + IPATH_PIO_MAXIBHDR; - ipath_cdbg(VERBOSE, "ibmaxlen was 0x%x, setting to 0x%x " - "(mtu 0x%x)\n", dd->ipath_ibmaxlen, piosize, - arg); - dd->ipath_ibmaxlen = piosize; - changed = 1; - } - - if (changed) { - u64 ibc = dd->ipath_ibcctrl, ibdw; - /* - * update our housekeeping variables, and set IBC max - * size, same as init code; max IBC is max we allow in - * buffer, less the qword pbc, plus 1 for ICRC, in dwords - */ - dd->ipath_ibmaxlen = piosize - 2 * sizeof(u32); - ibdw = (dd->ipath_ibmaxlen >> 2) + 1; - ibc &= ~(INFINIPATH_IBCC_MAXPKTLEN_MASK << - dd->ibcc_mpl_shift); - ibc |= ibdw << dd->ibcc_mpl_shift; - dd->ipath_ibcctrl = ibc; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - dd->ipath_f_tidtemplate(dd); - } - - ret = 0; - -bail: - return ret; -} - -int ipath_set_lid(struct ipath_devdata *dd, u32 lid, u8 lmc) -{ - dd->ipath_lid = lid; - dd->ipath_lmc = lmc; - - dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LIDLMC, lid | - (~((1U << lmc) - 1)) << 16); - - dev_info(&dd->pcidev->dev, "We got a lid: 0x%x\n", lid); - - return 0; -} - - -/** - * ipath_write_kreg_port - write a device's per-port 64-bit kernel register - * @dd: the infinipath device - * @regno: the register number to write - * @port: the port containing the register - * @value: the value to write - * - * Registers that vary with the chip implementation constants (port) - * use this routine. - */ -void ipath_write_kreg_port(const struct ipath_devdata *dd, ipath_kreg regno, - unsigned port, u64 value) -{ - u16 where; - - if (port < dd->ipath_portcnt && - (regno == dd->ipath_kregs->kr_rcvhdraddr || - regno == dd->ipath_kregs->kr_rcvhdrtailaddr)) - where = regno + port; - else - where = -1; - - ipath_write_kreg(dd, where, value); -} - -/* - * Following deal with the "obviously simple" task of overriding the state - * of the LEDS, which normally indicate link physical and logical status. - * The complications arise in dealing with different hardware mappings - * and the board-dependent routine being called from interrupts. - * and then there's the requirement to _flash_ them. - */ -#define LED_OVER_FREQ_SHIFT 8 -#define LED_OVER_FREQ_MASK (0xFF<ipath_flags & IPATH_INITTED)) - return; - - pidx = dd->ipath_led_override_phase++ & 1; - dd->ipath_led_override = dd->ipath_led_override_vals[pidx]; - timeoff = dd->ipath_led_override_timeoff; - - /* - * below potentially restores the LED values per current status, - * should also possibly setup the traffic-blink register, - * but leave that to per-chip functions. - */ - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); - ltstate = ipath_ib_linktrstate(dd, val); - lstate = ipath_ib_linkstate(dd, val); - - dd->ipath_f_setextled(dd, lstate, ltstate); - mod_timer(&dd->ipath_led_override_timer, jiffies + timeoff); -} - -void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val) -{ - int timeoff, freq; - - if (!(dd->ipath_flags & IPATH_INITTED)) - return; - - /* First check if we are blinking. If not, use 1HZ polling */ - timeoff = HZ; - freq = (val & LED_OVER_FREQ_MASK) >> LED_OVER_FREQ_SHIFT; - - if (freq) { - /* For blink, set each phase from one nybble of val */ - dd->ipath_led_override_vals[0] = val & 0xF; - dd->ipath_led_override_vals[1] = (val >> 4) & 0xF; - timeoff = (HZ << 4)/freq; - } else { - /* Non-blink set both phases the same. */ - dd->ipath_led_override_vals[0] = val & 0xF; - dd->ipath_led_override_vals[1] = val & 0xF; - } - dd->ipath_led_override_timeoff = timeoff; - - /* - * If the timer has not already been started, do so. Use a "quick" - * timeout so the function will be called soon, to look at our request. - */ - if (atomic_inc_return(&dd->ipath_led_override_timer_active) == 1) { - /* Need to start timer */ - setup_timer(&dd->ipath_led_override_timer, - ipath_run_led_override, (unsigned long)dd); - - dd->ipath_led_override_timer.expires = jiffies + 1; - add_timer(&dd->ipath_led_override_timer); - } else - atomic_dec(&dd->ipath_led_override_timer_active); -} - -/** - * ipath_shutdown_device - shut down a device - * @dd: the infinipath device - * - * This is called to make the device quiet when we are about to - * unload the driver, and also when the device is administratively - * disabled. It does not free any data structures. - * Everything it does has to be setup again by ipath_init_chip(dd,1) - */ -void ipath_shutdown_device(struct ipath_devdata *dd) -{ - unsigned long flags; - - ipath_dbg("Shutting down the device\n"); - - ipath_hol_up(dd); /* make sure user processes aren't suspended */ - - dd->ipath_flags |= IPATH_LINKUNK; - dd->ipath_flags &= ~(IPATH_INITTED | IPATH_LINKDOWN | - IPATH_LINKINIT | IPATH_LINKARMED | - IPATH_LINKACTIVE); - *dd->ipath_statusp &= ~(IPATH_STATUS_IB_CONF | - IPATH_STATUS_IB_READY); - - /* mask interrupts, but not errors */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, 0ULL); - - dd->ipath_rcvctrl = 0; - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - teardown_sdma(dd); - - /* - * gracefully stop all sends allowing any in progress to trickle out - * first. - */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl = 0; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - /* flush it */ - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* - * enough for anything that's going to trickle out to have actually - * done so. - */ - udelay(5); - - dd->ipath_f_setextled(dd, 0, 0); /* make sure LEDs are off */ - - ipath_set_ib_lstate(dd, 0, INFINIPATH_IBCC_LINKINITCMD_DISABLE); - ipath_cancel_sends(dd, 0); - - /* - * we are shutting down, so tell components that care. We don't do - * this on just a link state change, much like ethernet, a cable - * unplug, etc. doesn't change driver state - */ - signal_ib_event(dd, IB_EVENT_PORT_ERR); - - /* disable IBC */ - dd->ipath_control &= ~INFINIPATH_C_LINKENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control | INFINIPATH_C_FREEZEMODE); - - /* - * clear SerdesEnable and turn the leds off; do this here because - * we are unloading, so don't count on interrupts to move along - * Turn the LEDs off explicitly for the same reason. - */ - dd->ipath_f_quiet_serdes(dd); - - /* stop all the timers that might still be running */ - del_timer_sync(&dd->ipath_hol_timer); - if (dd->ipath_stats_timer_active) { - del_timer_sync(&dd->ipath_stats_timer); - dd->ipath_stats_timer_active = 0; - } - if (dd->ipath_intrchk_timer.data) { - del_timer_sync(&dd->ipath_intrchk_timer); - dd->ipath_intrchk_timer.data = 0; - } - if (atomic_read(&dd->ipath_led_override_timer_active)) { - del_timer_sync(&dd->ipath_led_override_timer); - atomic_set(&dd->ipath_led_override_timer_active, 0); - } - - /* - * clear all interrupts and errors, so that the next time the driver - * is loaded or device is enabled, we know that whatever is set - * happened while we were unloaded - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, - ~0ULL & ~INFINIPATH_HWE_MEMBISTFAILED); - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, -1LL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, -1LL); - - ipath_cdbg(VERBOSE, "Flush time and errors to EEPROM\n"); - ipath_update_eeprom_log(dd); -} - -/** - * ipath_free_pddata - free a port's allocated data - * @dd: the infinipath device - * @pd: the portdata structure - * - * free up any allocated data for a port - * This should not touch anything that would affect a simultaneous - * re-allocation of port data, because it is called after ipath_mutex - * is released (and can be called from reinit as well). - * It should never change any chip state, or global driver state. - * (The only exception to global state is freeing the port0 port0_skbs.) - */ -void ipath_free_pddata(struct ipath_devdata *dd, struct ipath_portdata *pd) -{ - if (!pd) - return; - - if (pd->port_rcvhdrq) { - ipath_cdbg(VERBOSE, "free closed port %d rcvhdrq @ %p " - "(size=%lu)\n", pd->port_port, pd->port_rcvhdrq, - (unsigned long) pd->port_rcvhdrq_size); - dma_free_coherent(&dd->pcidev->dev, pd->port_rcvhdrq_size, - pd->port_rcvhdrq, pd->port_rcvhdrq_phys); - pd->port_rcvhdrq = NULL; - if (pd->port_rcvhdrtail_kvaddr) { - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - pd->port_rcvhdrtail_kvaddr, - pd->port_rcvhdrqtailaddr_phys); - pd->port_rcvhdrtail_kvaddr = NULL; - } - } - if (pd->port_port && pd->port_rcvegrbuf) { - unsigned e; - - for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { - void *base = pd->port_rcvegrbuf[e]; - size_t size = pd->port_rcvegrbuf_size; - - ipath_cdbg(VERBOSE, "egrbuf free(%p, %lu), " - "chunk %u/%u\n", base, - (unsigned long) size, - e, pd->port_rcvegrbuf_chunks); - dma_free_coherent(&dd->pcidev->dev, size, - base, pd->port_rcvegrbuf_phys[e]); - } - kfree(pd->port_rcvegrbuf); - pd->port_rcvegrbuf = NULL; - kfree(pd->port_rcvegrbuf_phys); - pd->port_rcvegrbuf_phys = NULL; - pd->port_rcvegrbuf_chunks = 0; - } else if (pd->port_port == 0 && dd->ipath_port0_skbinfo) { - unsigned e; - struct ipath_skbinfo *skbinfo = dd->ipath_port0_skbinfo; - - dd->ipath_port0_skbinfo = NULL; - ipath_cdbg(VERBOSE, "free closed port %d " - "ipath_port0_skbinfo @ %p\n", pd->port_port, - skbinfo); - for (e = 0; e < dd->ipath_p0_rcvegrcnt; e++) - if (skbinfo[e].skb) { - pci_unmap_single(dd->pcidev, skbinfo[e].phys, - dd->ipath_ibmaxlen, - PCI_DMA_FROMDEVICE); - dev_kfree_skb(skbinfo[e].skb); - } - vfree(skbinfo); - } - kfree(pd->port_tid_pg_list); - vfree(pd->subport_uregbase); - vfree(pd->subport_rcvegrbuf); - vfree(pd->subport_rcvhdr_base); - kfree(pd); -} - -static int __init infinipath_init(void) -{ - int ret; - - if (ipath_debug & __IPATH_DBG) - printk(KERN_INFO DRIVER_LOAD_MSG "%s", ib_ipath_version); - - /* - * These must be called before the driver is registered with - * the PCI subsystem. - */ - idr_init(&unit_table); - - ret = pci_register_driver(&ipath_driver); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME - ": Unable to register driver: error %d\n", -ret); - goto bail_unit; - } - - ret = ipath_init_ipathfs(); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME ": Unable to create " - "ipathfs: error %d\n", -ret); - goto bail_pci; - } - - goto bail; - -bail_pci: - pci_unregister_driver(&ipath_driver); - -bail_unit: - idr_destroy(&unit_table); - -bail: - return ret; -} - -static void __exit infinipath_cleanup(void) -{ - ipath_exit_ipathfs(); - - ipath_cdbg(VERBOSE, "Unregistering pci driver\n"); - pci_unregister_driver(&ipath_driver); - - idr_destroy(&unit_table); -} - -/** - * ipath_reset_device - reset the chip if possible - * @unit: the device to reset - * - * Whether or not reset is successful, we attempt to re-initialize the chip - * (that is, much like a driver unload/reload). We clear the INITTED flag - * so that the various entry points will fail until we reinitialize. For - * now, we only allow this if no user ports are open that use chip resources - */ -int ipath_reset_device(int unit) -{ - int ret, i; - struct ipath_devdata *dd = ipath_lookup(unit); - unsigned long flags; - - if (!dd) { - ret = -ENODEV; - goto bail; - } - - if (atomic_read(&dd->ipath_led_override_timer_active)) { - /* Need to stop LED timer, _then_ shut off LEDs */ - del_timer_sync(&dd->ipath_led_override_timer); - atomic_set(&dd->ipath_led_override_timer_active, 0); - } - - /* Shut off LEDs after we are sure timer is not running */ - dd->ipath_led_override = LED_OVER_BOTH_OFF; - dd->ipath_f_setextled(dd, 0, 0); - - dev_info(&dd->pcidev->dev, "Reset on unit %u requested\n", unit); - - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) { - dev_info(&dd->pcidev->dev, "Invalid unit number %u or " - "not initialized or not present\n", unit); - ret = -ENXIO; - goto bail; - } - - spin_lock_irqsave(&dd->ipath_uctxt_lock, flags); - if (dd->ipath_pd) - for (i = 1; i < dd->ipath_cfgports; i++) { - if (!dd->ipath_pd[i] || !dd->ipath_pd[i]->port_cnt) - continue; - spin_unlock_irqrestore(&dd->ipath_uctxt_lock, flags); - ipath_dbg("unit %u port %d is in use " - "(PID %u cmd %s), can't reset\n", - unit, i, - pid_nr(dd->ipath_pd[i]->port_pid), - dd->ipath_pd[i]->port_comm); - ret = -EBUSY; - goto bail; - } - spin_unlock_irqrestore(&dd->ipath_uctxt_lock, flags); - - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - teardown_sdma(dd); - - dd->ipath_flags &= ~IPATH_INITTED; - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, 0ULL); - ret = dd->ipath_f_reset(dd); - if (ret == 1) { - ipath_dbg("Reinitializing unit %u after reset attempt\n", - unit); - ret = ipath_init_chip(dd, 1); - } else - ret = -EAGAIN; - if (ret) - ipath_dev_err(dd, "Reinitialize unit %u after " - "reset failed with %d\n", unit, ret); - else - dev_info(&dd->pcidev->dev, "Reinitialized unit %u after " - "resetting\n", unit); - -bail: - return ret; -} - -/* - * send a signal to all the processes that have the driver open - * through the normal interfaces (i.e., everything other than diags - * interface). Returns number of signalled processes. - */ -static int ipath_signal_procs(struct ipath_devdata *dd, int sig) -{ - int i, sub, any = 0; - struct pid *pid; - unsigned long flags; - - if (!dd->ipath_pd) - return 0; - - spin_lock_irqsave(&dd->ipath_uctxt_lock, flags); - for (i = 1; i < dd->ipath_cfgports; i++) { - if (!dd->ipath_pd[i] || !dd->ipath_pd[i]->port_cnt) - continue; - pid = dd->ipath_pd[i]->port_pid; - if (!pid) - continue; - - dev_info(&dd->pcidev->dev, "context %d in use " - "(PID %u), sending signal %d\n", - i, pid_nr(pid), sig); - kill_pid(pid, sig, 1); - any++; - for (sub = 0; sub < INFINIPATH_MAX_SUBPORT; sub++) { - pid = dd->ipath_pd[i]->port_subpid[sub]; - if (!pid) - continue; - dev_info(&dd->pcidev->dev, "sub-context " - "%d:%d in use (PID %u), sending " - "signal %d\n", i, sub, pid_nr(pid), sig); - kill_pid(pid, sig, 1); - any++; - } - } - spin_unlock_irqrestore(&dd->ipath_uctxt_lock, flags); - return any; -} - -static void ipath_hol_signal_down(struct ipath_devdata *dd) -{ - if (ipath_signal_procs(dd, SIGSTOP)) - ipath_dbg("Stopped some processes\n"); - ipath_cancel_sends(dd, 1); -} - - -static void ipath_hol_signal_up(struct ipath_devdata *dd) -{ - if (ipath_signal_procs(dd, SIGCONT)) - ipath_dbg("Continued some processes\n"); -} - -/* - * link is down, stop any users processes, and flush pending sends - * to prevent HoL blocking, then start the HoL timer that - * periodically continues, then stop procs, so they can detect - * link down if they want, and do something about it. - * Timer may already be running, so use mod_timer, not add_timer. - */ -void ipath_hol_down(struct ipath_devdata *dd) -{ - dd->ipath_hol_state = IPATH_HOL_DOWN; - ipath_hol_signal_down(dd); - dd->ipath_hol_next = IPATH_HOL_DOWNCONT; - dd->ipath_hol_timer.expires = jiffies + - msecs_to_jiffies(ipath_hol_timeout_ms); - mod_timer(&dd->ipath_hol_timer, dd->ipath_hol_timer.expires); -} - -/* - * link is up, continue any user processes, and ensure timer - * is a nop, if running. Let timer keep running, if set; it - * will nop when it sees the link is up - */ -void ipath_hol_up(struct ipath_devdata *dd) -{ - ipath_hol_signal_up(dd); - dd->ipath_hol_state = IPATH_HOL_UP; -} - -/* - * toggle the running/not running state of user proceses - * to prevent HoL blocking on chip resources, but still allow - * user processes to do link down special case handling. - * Should only be called via the timer - */ -void ipath_hol_event(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *)opaque; - - if (dd->ipath_hol_next == IPATH_HOL_DOWNSTOP - && dd->ipath_hol_state != IPATH_HOL_UP) { - dd->ipath_hol_next = IPATH_HOL_DOWNCONT; - ipath_dbg("Stopping processes\n"); - ipath_hol_signal_down(dd); - } else { /* may do "extra" if also in ipath_hol_up() */ - dd->ipath_hol_next = IPATH_HOL_DOWNSTOP; - ipath_dbg("Continuing processes\n"); - ipath_hol_signal_up(dd); - } - if (dd->ipath_hol_state == IPATH_HOL_UP) - ipath_dbg("link's up, don't resched timer\n"); - else { - dd->ipath_hol_timer.expires = jiffies + - msecs_to_jiffies(ipath_hol_timeout_ms); - mod_timer(&dd->ipath_hol_timer, - dd->ipath_hol_timer.expires); - } -} - -int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv) -{ - u64 val; - - if (new_pol_inv > INFINIPATH_XGXS_RX_POL_MASK) - return -1; - if (dd->ipath_rx_pol_inv != new_pol_inv) { - dd->ipath_rx_pol_inv = new_pol_inv; - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig); - val &= ~(INFINIPATH_XGXS_RX_POL_MASK << - INFINIPATH_XGXS_RX_POL_SHIFT); - val |= ((u64)dd->ipath_rx_pol_inv) << - INFINIPATH_XGXS_RX_POL_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); - } - return 0; -} - -/* - * Disable and enable the armlaunch error. Used for PIO bandwidth testing on - * the 7220, which is count-based, rather than trigger-based. Safe for the - * driver check, since it's at init. Not completely safe when used for - * user-mode checking, since some error checking can be lost, but not - * particularly risky, and only has problematic side-effects in the face of - * very buggy user code. There is no reference counting, but that's also - * fine, given the intended use. - */ -void ipath_enable_armlaunch(struct ipath_devdata *dd) -{ - dd->ipath_lasterror &= ~INFINIPATH_E_SPIOARMLAUNCH; - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, - INFINIPATH_E_SPIOARMLAUNCH); - dd->ipath_errormask |= INFINIPATH_E_SPIOARMLAUNCH; - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); -} - -void ipath_disable_armlaunch(struct ipath_devdata *dd) -{ - /* so don't re-enable if already set */ - dd->ipath_maskederrs &= ~INFINIPATH_E_SPIOARMLAUNCH; - dd->ipath_errormask &= ~INFINIPATH_E_SPIOARMLAUNCH; - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); -} - -module_init(infinipath_init); -module_exit(infinipath_cleanup); diff --git a/drivers/staging/rdma/ipath/ipath_eeprom.c b/drivers/staging/rdma/ipath/ipath_eeprom.c deleted file mode 100644 index ef84107c7ce0..000000000000 --- a/drivers/staging/rdma/ipath/ipath_eeprom.c +++ /dev/null @@ -1,1183 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_kernel.h" - -/* - * InfiniPath I2C driver for a serial eeprom. This is not a generic - * I2C interface. For a start, the device we're using (Atmel AT24C11) - * doesn't work like a regular I2C device. It looks like one - * electrically, but not logically. Normal I2C devices have a single - * 7-bit or 10-bit I2C address that they respond to. Valid 7-bit - * addresses range from 0x03 to 0x77. Addresses 0x00 to 0x02 and 0x78 - * to 0x7F are special reserved addresses (e.g. 0x00 is the "general - * call" address.) The Atmel device, on the other hand, responds to ALL - * 7-bit addresses. It's designed to be the only device on a given I2C - * bus. A 7-bit address corresponds to the memory address within the - * Atmel device itself. - * - * Also, the timing requirements mean more than simple software - * bitbanging, with readbacks from chip to ensure timing (simple udelay - * is not enough). - * - * This all means that accessing the device is specialized enough - * that using the standard kernel I2C bitbanging interface would be - * impossible. For example, the core I2C eeprom driver expects to find - * a device at one or more of a limited set of addresses only. It doesn't - * allow writing to an eeprom. It also doesn't provide any means of - * accessing eeprom contents from within the kernel, only via sysfs. - */ - -/* Added functionality for IBA7220-based cards */ -#define IPATH_EEPROM_DEV_V1 0xA0 -#define IPATH_EEPROM_DEV_V2 0xA2 -#define IPATH_TEMP_DEV 0x98 -#define IPATH_BAD_DEV (IPATH_EEPROM_DEV_V2+2) -#define IPATH_NO_DEV (0xFF) - -/* - * The number of I2C chains is proliferating. Table below brings - * some order to the madness. The basic principle is that the - * table is scanned from the top, and a "probe" is made to the - * device probe_dev. If that succeeds, the chain is considered - * to be of that type, and dd->i2c_chain_type is set to the index+1 - * of the entry. - * The +1 is so static initialization can mean "unknown, do probe." - */ -static struct i2c_chain_desc { - u8 probe_dev; /* If seen at probe, chain is this type */ - u8 eeprom_dev; /* Dev addr (if any) for EEPROM */ - u8 temp_dev; /* Dev Addr (if any) for Temp-sense */ -} i2c_chains[] = { - { IPATH_BAD_DEV, IPATH_NO_DEV, IPATH_NO_DEV }, /* pre-iba7220 bds */ - { IPATH_EEPROM_DEV_V1, IPATH_EEPROM_DEV_V1, IPATH_TEMP_DEV}, /* V1 */ - { IPATH_EEPROM_DEV_V2, IPATH_EEPROM_DEV_V2, IPATH_TEMP_DEV}, /* V2 */ - { IPATH_NO_DEV } -}; - -enum i2c_type { - i2c_line_scl = 0, - i2c_line_sda -}; - -enum i2c_state { - i2c_line_low = 0, - i2c_line_high -}; - -#define READ_CMD 1 -#define WRITE_CMD 0 - -/** - * i2c_gpio_set - set a GPIO line - * @dd: the infinipath device - * @line: the line to set - * @new_line_state: the state to set - * - * Returns 0 if the line was set to the new state successfully, non-zero - * on error. - */ -static int i2c_gpio_set(struct ipath_devdata *dd, - enum i2c_type line, - enum i2c_state new_line_state) -{ - u64 out_mask, dir_mask, *gpioval; - unsigned long flags = 0; - - gpioval = &dd->ipath_gpio_out; - - if (line == i2c_line_scl) { - dir_mask = dd->ipath_gpio_scl; - out_mask = (1UL << dd->ipath_gpio_scl_num); - } else { - dir_mask = dd->ipath_gpio_sda; - out_mask = (1UL << dd->ipath_gpio_sda_num); - } - - spin_lock_irqsave(&dd->ipath_gpio_lock, flags); - if (new_line_state == i2c_line_high) { - /* tri-state the output rather than force high */ - dd->ipath_extctrl &= ~dir_mask; - } else { - /* config line to be an output */ - dd->ipath_extctrl |= dir_mask; - } - ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, dd->ipath_extctrl); - - /* set output as well (no real verify) */ - if (new_line_state == i2c_line_high) - *gpioval |= out_mask; - else - *gpioval &= ~out_mask; - - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_out, *gpioval); - spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags); - - return 0; -} - -/** - * i2c_gpio_get - get a GPIO line state - * @dd: the infinipath device - * @line: the line to get - * @curr_statep: where to put the line state - * - * Returns 0 if the line was set to the new state successfully, non-zero - * on error. curr_state is not set on error. - */ -static int i2c_gpio_get(struct ipath_devdata *dd, - enum i2c_type line, - enum i2c_state *curr_statep) -{ - u64 read_val, mask; - int ret; - unsigned long flags = 0; - - /* check args */ - if (curr_statep == NULL) { - ret = 1; - goto bail; - } - - /* config line to be an input */ - if (line == i2c_line_scl) - mask = dd->ipath_gpio_scl; - else - mask = dd->ipath_gpio_sda; - - spin_lock_irqsave(&dd->ipath_gpio_lock, flags); - dd->ipath_extctrl &= ~mask; - ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, dd->ipath_extctrl); - /* - * Below is very unlikely to reflect true input state if Output - * Enable actually changed. - */ - read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus); - spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags); - - if (read_val & mask) - *curr_statep = i2c_line_high; - else - *curr_statep = i2c_line_low; - - ret = 0; - -bail: - return ret; -} - -/** - * i2c_wait_for_writes - wait for a write - * @dd: the infinipath device - * - * We use this instead of udelay directly, so we can make sure - * that previous register writes have been flushed all the way - * to the chip. Since we are delaying anyway, the cost doesn't - * hurt, and makes the bit twiddling more regular - */ -static void i2c_wait_for_writes(struct ipath_devdata *dd) -{ - (void)ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch); - rmb(); -} - -static void scl_out(struct ipath_devdata *dd, u8 bit) -{ - udelay(1); - i2c_gpio_set(dd, i2c_line_scl, bit ? i2c_line_high : i2c_line_low); - - i2c_wait_for_writes(dd); -} - -static void sda_out(struct ipath_devdata *dd, u8 bit) -{ - i2c_gpio_set(dd, i2c_line_sda, bit ? i2c_line_high : i2c_line_low); - - i2c_wait_for_writes(dd); -} - -static u8 sda_in(struct ipath_devdata *dd, int wait) -{ - enum i2c_state bit; - - if (i2c_gpio_get(dd, i2c_line_sda, &bit)) - ipath_dbg("get bit failed!\n"); - - if (wait) - i2c_wait_for_writes(dd); - - return bit == i2c_line_high ? 1U : 0; -} - -/** - * i2c_ackrcv - see if ack following write is true - * @dd: the infinipath device - */ -static int i2c_ackrcv(struct ipath_devdata *dd) -{ - u8 ack_received; - - /* AT ENTRY SCL = LOW */ - /* change direction, ignore data */ - ack_received = sda_in(dd, 1); - scl_out(dd, i2c_line_high); - ack_received = sda_in(dd, 1) == 0; - scl_out(dd, i2c_line_low); - return ack_received; -} - -/** - * rd_byte - read a byte, leaving ACK, STOP, etc up to caller - * @dd: the infinipath device - * - * Returns byte shifted out of device - */ -static int rd_byte(struct ipath_devdata *dd) -{ - int bit_cntr, data; - - data = 0; - - for (bit_cntr = 7; bit_cntr >= 0; --bit_cntr) { - data <<= 1; - scl_out(dd, i2c_line_high); - data |= sda_in(dd, 0); - scl_out(dd, i2c_line_low); - } - return data; -} - -/** - * wr_byte - write a byte, one bit at a time - * @dd: the infinipath device - * @data: the byte to write - * - * Returns 0 if we got the following ack, otherwise 1 - */ -static int wr_byte(struct ipath_devdata *dd, u8 data) -{ - int bit_cntr; - u8 bit; - - for (bit_cntr = 7; bit_cntr >= 0; bit_cntr--) { - bit = (data >> bit_cntr) & 1; - sda_out(dd, bit); - scl_out(dd, i2c_line_high); - scl_out(dd, i2c_line_low); - } - return (!i2c_ackrcv(dd)) ? 1 : 0; -} - -static void send_ack(struct ipath_devdata *dd) -{ - sda_out(dd, i2c_line_low); - scl_out(dd, i2c_line_high); - scl_out(dd, i2c_line_low); - sda_out(dd, i2c_line_high); -} - -/** - * i2c_startcmd - transmit the start condition, followed by address/cmd - * @dd: the infinipath device - * @offset_dir: direction byte - * - * (both clock/data high, clock high, data low while clock is high) - */ -static int i2c_startcmd(struct ipath_devdata *dd, u8 offset_dir) -{ - int res; - - /* issue start sequence */ - sda_out(dd, i2c_line_high); - scl_out(dd, i2c_line_high); - sda_out(dd, i2c_line_low); - scl_out(dd, i2c_line_low); - - /* issue length and direction byte */ - res = wr_byte(dd, offset_dir); - - if (res) - ipath_cdbg(VERBOSE, "No ack to complete start\n"); - - return res; -} - -/** - * stop_cmd - transmit the stop condition - * @dd: the infinipath device - * - * (both clock/data low, clock high, data high while clock is high) - */ -static void stop_cmd(struct ipath_devdata *dd) -{ - scl_out(dd, i2c_line_low); - sda_out(dd, i2c_line_low); - scl_out(dd, i2c_line_high); - sda_out(dd, i2c_line_high); - udelay(2); -} - -/** - * eeprom_reset - reset I2C communication - * @dd: the infinipath device - */ - -static int eeprom_reset(struct ipath_devdata *dd) -{ - int clock_cycles_left = 9; - u64 *gpioval = &dd->ipath_gpio_out; - int ret; - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_gpio_lock, flags); - /* Make sure shadows are consistent */ - dd->ipath_extctrl = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extctrl); - *gpioval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_gpio_out); - spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags); - - ipath_cdbg(VERBOSE, "Resetting i2c eeprom; initial gpioout reg " - "is %llx\n", (unsigned long long) *gpioval); - - /* - * This is to get the i2c into a known state, by first going low, - * then tristate sda (and then tristate scl as first thing - * in loop) - */ - scl_out(dd, i2c_line_low); - sda_out(dd, i2c_line_high); - - /* Clock up to 9 cycles looking for SDA hi, then issue START and STOP */ - while (clock_cycles_left--) { - scl_out(dd, i2c_line_high); - - /* SDA seen high, issue START by dropping it while SCL high */ - if (sda_in(dd, 0)) { - sda_out(dd, i2c_line_low); - scl_out(dd, i2c_line_low); - /* ATMEL spec says must be followed by STOP. */ - scl_out(dd, i2c_line_high); - sda_out(dd, i2c_line_high); - ret = 0; - goto bail; - } - - scl_out(dd, i2c_line_low); - } - - ret = 1; - -bail: - return ret; -} - -/* - * Probe for I2C device at specified address. Returns 0 for "success" - * to match rest of this file. - * Leave bus in "reasonable" state for further commands. - */ -static int i2c_probe(struct ipath_devdata *dd, int devaddr) -{ - int ret; - - ret = eeprom_reset(dd); - if (ret) { - ipath_dev_err(dd, "Failed reset probing device 0x%02X\n", - devaddr); - return ret; - } - /* - * Reset no longer leaves bus in start condition, so normal - * i2c_startcmd() will do. - */ - ret = i2c_startcmd(dd, devaddr | READ_CMD); - if (ret) - ipath_cdbg(VERBOSE, "Failed startcmd for device 0x%02X\n", - devaddr); - else { - /* - * Device did respond. Complete a single-byte read, because some - * devices apparently cannot handle STOP immediately after they - * ACK the start-cmd. - */ - int data; - data = rd_byte(dd); - stop_cmd(dd); - ipath_cdbg(VERBOSE, "Response from device 0x%02X\n", devaddr); - } - return ret; -} - -/* - * Returns the "i2c type". This is a pointer to a struct that describes - * the I2C chain on this board. To minimize impact on struct ipath_devdata, - * the (small integer) index into the table is actually memoized, rather - * then the pointer. - * Memoization is because the type is determined on the first call per chip. - * An alternative would be to move type determination to early - * init code. - */ -static struct i2c_chain_desc *ipath_i2c_type(struct ipath_devdata *dd) -{ - int idx; - - /* Get memoized index, from previous successful probes */ - idx = dd->ipath_i2c_chain_type - 1; - if (idx >= 0 && idx < (ARRAY_SIZE(i2c_chains) - 1)) - goto done; - - idx = 0; - while (i2c_chains[idx].probe_dev != IPATH_NO_DEV) { - /* if probe succeeds, this is type */ - if (!i2c_probe(dd, i2c_chains[idx].probe_dev)) - break; - ++idx; - } - - /* - * Old EEPROM (first entry) may require a reset after probe, - * rather than being able to "start" after "stop" - */ - if (idx == 0) - eeprom_reset(dd); - - if (i2c_chains[idx].probe_dev == IPATH_NO_DEV) - idx = -1; - else - dd->ipath_i2c_chain_type = idx + 1; -done: - return (idx >= 0) ? i2c_chains + idx : NULL; -} - -static int ipath_eeprom_internal_read(struct ipath_devdata *dd, - u8 eeprom_offset, void *buffer, int len) -{ - int ret; - struct i2c_chain_desc *icd; - u8 *bp = buffer; - - ret = 1; - icd = ipath_i2c_type(dd); - if (!icd) - goto bail; - - if (icd->eeprom_dev == IPATH_NO_DEV) { - /* legacy not-really-I2C */ - ipath_cdbg(VERBOSE, "Start command only address\n"); - eeprom_offset = (eeprom_offset << 1) | READ_CMD; - ret = i2c_startcmd(dd, eeprom_offset); - } else { - /* Actual I2C */ - ipath_cdbg(VERBOSE, "Start command uses devaddr\n"); - if (i2c_startcmd(dd, icd->eeprom_dev | WRITE_CMD)) { - ipath_dbg("Failed EEPROM startcmd\n"); - stop_cmd(dd); - ret = 1; - goto bail; - } - ret = wr_byte(dd, eeprom_offset); - stop_cmd(dd); - if (ret) { - ipath_dev_err(dd, "Failed to write EEPROM address\n"); - ret = 1; - goto bail; - } - ret = i2c_startcmd(dd, icd->eeprom_dev | READ_CMD); - } - if (ret) { - ipath_dbg("Failed startcmd for dev %02X\n", icd->eeprom_dev); - stop_cmd(dd); - ret = 1; - goto bail; - } - - /* - * eeprom keeps clocking data out as long as we ack, automatically - * incrementing the address. - */ - while (len-- > 0) { - /* get and store data */ - *bp++ = rd_byte(dd); - /* send ack if not the last byte */ - if (len) - send_ack(dd); - } - - stop_cmd(dd); - - ret = 0; - -bail: - return ret; -} - -static int ipath_eeprom_internal_write(struct ipath_devdata *dd, u8 eeprom_offset, - const void *buffer, int len) -{ - int sub_len; - const u8 *bp = buffer; - int max_wait_time, i; - int ret; - struct i2c_chain_desc *icd; - - ret = 1; - icd = ipath_i2c_type(dd); - if (!icd) - goto bail; - - while (len > 0) { - if (icd->eeprom_dev == IPATH_NO_DEV) { - if (i2c_startcmd(dd, - (eeprom_offset << 1) | WRITE_CMD)) { - ipath_dbg("Failed to start cmd offset %u\n", - eeprom_offset); - goto failed_write; - } - } else { - /* Real I2C */ - if (i2c_startcmd(dd, icd->eeprom_dev | WRITE_CMD)) { - ipath_dbg("Failed EEPROM startcmd\n"); - goto failed_write; - } - ret = wr_byte(dd, eeprom_offset); - if (ret) { - ipath_dev_err(dd, "Failed to write EEPROM " - "address\n"); - goto failed_write; - } - } - - sub_len = min(len, 4); - eeprom_offset += sub_len; - len -= sub_len; - - for (i = 0; i < sub_len; i++) { - if (wr_byte(dd, *bp++)) { - ipath_dbg("no ack after byte %u/%u (%u " - "total remain)\n", i, sub_len, - len + sub_len - i); - goto failed_write; - } - } - - stop_cmd(dd); - - /* - * wait for write complete by waiting for a successful - * read (the chip replies with a zero after the write - * cmd completes, and before it writes to the eeprom. - * The startcmd for the read will fail the ack until - * the writes have completed. We do this inline to avoid - * the debug prints that are in the real read routine - * if the startcmd fails. - * We also use the proper device address, so it doesn't matter - * whether we have real eeprom_dev. legacy likes any address. - */ - max_wait_time = 100; - while (i2c_startcmd(dd, icd->eeprom_dev | READ_CMD)) { - stop_cmd(dd); - if (!--max_wait_time) { - ipath_dbg("Did not get successful read to " - "complete write\n"); - goto failed_write; - } - } - /* now read (and ignore) the resulting byte */ - rd_byte(dd); - stop_cmd(dd); - } - - ret = 0; - goto bail; - -failed_write: - stop_cmd(dd); - ret = 1; - -bail: - return ret; -} - -/** - * ipath_eeprom_read - receives bytes from the eeprom via I2C - * @dd: the infinipath device - * @eeprom_offset: address to read from - * @buffer: where to store result - * @len: number of bytes to receive - */ -int ipath_eeprom_read(struct ipath_devdata *dd, u8 eeprom_offset, - void *buff, int len) -{ - int ret; - - ret = mutex_lock_interruptible(&dd->ipath_eep_lock); - if (!ret) { - ret = ipath_eeprom_internal_read(dd, eeprom_offset, buff, len); - mutex_unlock(&dd->ipath_eep_lock); - } - - return ret; -} - -/** - * ipath_eeprom_write - writes data to the eeprom via I2C - * @dd: the infinipath device - * @eeprom_offset: where to place data - * @buffer: data to write - * @len: number of bytes to write - */ -int ipath_eeprom_write(struct ipath_devdata *dd, u8 eeprom_offset, - const void *buff, int len) -{ - int ret; - - ret = mutex_lock_interruptible(&dd->ipath_eep_lock); - if (!ret) { - ret = ipath_eeprom_internal_write(dd, eeprom_offset, buff, len); - mutex_unlock(&dd->ipath_eep_lock); - } - - return ret; -} - -static u8 flash_csum(struct ipath_flash *ifp, int adjust) -{ - u8 *ip = (u8 *) ifp; - u8 csum = 0, len; - - /* - * Limit length checksummed to max length of actual data. - * Checksum of erased eeprom will still be bad, but we avoid - * reading past the end of the buffer we were passed. - */ - len = ifp->if_length; - if (len > sizeof(struct ipath_flash)) - len = sizeof(struct ipath_flash); - while (len--) - csum += *ip++; - csum -= ifp->if_csum; - csum = ~csum; - if (adjust) - ifp->if_csum = csum; - - return csum; -} - -/** - * ipath_get_guid - get the GUID from the i2c device - * @dd: the infinipath device - * - * We have the capability to use the ipath_nguid field, and get - * the guid from the first chip's flash, to use for all of them. - */ -void ipath_get_eeprom_info(struct ipath_devdata *dd) -{ - void *buf; - struct ipath_flash *ifp; - __be64 guid; - int len, eep_stat; - u8 csum, *bguid; - int t = dd->ipath_unit; - struct ipath_devdata *dd0 = ipath_lookup(0); - - if (t && dd0->ipath_nguid > 1 && t <= dd0->ipath_nguid) { - u8 oguid; - dd->ipath_guid = dd0->ipath_guid; - bguid = (u8 *) & dd->ipath_guid; - - oguid = bguid[7]; - bguid[7] += t; - if (oguid > bguid[7]) { - if (bguid[6] == 0xff) { - if (bguid[5] == 0xff) { - ipath_dev_err( - dd, - "Can't set %s GUID from " - "base, wraps to OUI!\n", - ipath_get_unit_name(t)); - dd->ipath_guid = 0; - goto bail; - } - bguid[5]++; - } - bguid[6]++; - } - dd->ipath_nguid = 1; - - ipath_dbg("nguid %u, so adding %u to device 0 guid, " - "for %llx\n", - dd0->ipath_nguid, t, - (unsigned long long) be64_to_cpu(dd->ipath_guid)); - goto bail; - } - - /* - * read full flash, not just currently used part, since it may have - * been written with a newer definition - * */ - len = sizeof(struct ipath_flash); - buf = vmalloc(len); - if (!buf) { - ipath_dev_err(dd, "Couldn't allocate memory to read %u " - "bytes from eeprom for GUID\n", len); - goto bail; - } - - mutex_lock(&dd->ipath_eep_lock); - eep_stat = ipath_eeprom_internal_read(dd, 0, buf, len); - mutex_unlock(&dd->ipath_eep_lock); - - if (eep_stat) { - ipath_dev_err(dd, "Failed reading GUID from eeprom\n"); - goto done; - } - ifp = (struct ipath_flash *)buf; - - csum = flash_csum(ifp, 0); - if (csum != ifp->if_csum) { - dev_info(&dd->pcidev->dev, "Bad I2C flash checksum: " - "0x%x, not 0x%x\n", csum, ifp->if_csum); - goto done; - } - if (*(__be64 *) ifp->if_guid == cpu_to_be64(0) || - *(__be64 *) ifp->if_guid == ~cpu_to_be64(0)) { - ipath_dev_err(dd, "Invalid GUID %llx from flash; " - "ignoring\n", - *(unsigned long long *) ifp->if_guid); - /* don't allow GUID if all 0 or all 1's */ - goto done; - } - - /* complain, but allow it */ - if (*(u64 *) ifp->if_guid == 0x100007511000000ULL) - dev_info(&dd->pcidev->dev, "Warning, GUID %llx is " - "default, probably not correct!\n", - *(unsigned long long *) ifp->if_guid); - - bguid = ifp->if_guid; - if (!bguid[0] && !bguid[1] && !bguid[2]) { - /* original incorrect GUID format in flash; fix in - * core copy, by shifting up 2 octets; don't need to - * change top octet, since both it and shifted are - * 0.. */ - bguid[1] = bguid[3]; - bguid[2] = bguid[4]; - bguid[3] = bguid[4] = 0; - guid = *(__be64 *) ifp->if_guid; - ipath_cdbg(VERBOSE, "Old GUID format in flash, top 3 zero, " - "shifting 2 octets\n"); - } else - guid = *(__be64 *) ifp->if_guid; - dd->ipath_guid = guid; - dd->ipath_nguid = ifp->if_numguid; - /* - * Things are slightly complicated by the desire to transparently - * support both the Pathscale 10-digit serial number and the QLogic - * 13-character version. - */ - if ((ifp->if_fversion > 1) && ifp->if_sprefix[0] - && ((u8 *)ifp->if_sprefix)[0] != 0xFF) { - /* This board has a Serial-prefix, which is stored - * elsewhere for backward-compatibility. - */ - char *snp = dd->ipath_serial; - memcpy(snp, ifp->if_sprefix, sizeof ifp->if_sprefix); - snp[sizeof ifp->if_sprefix] = '\0'; - len = strlen(snp); - snp += len; - len = (sizeof dd->ipath_serial) - len; - if (len > sizeof ifp->if_serial) { - len = sizeof ifp->if_serial; - } - memcpy(snp, ifp->if_serial, len); - } else - memcpy(dd->ipath_serial, ifp->if_serial, - sizeof ifp->if_serial); - if (!strstr(ifp->if_comment, "Tested successfully")) - ipath_dev_err(dd, "Board SN %s did not pass functional " - "test: %s\n", dd->ipath_serial, - ifp->if_comment); - - ipath_cdbg(VERBOSE, "Initted GUID to %llx from eeprom\n", - (unsigned long long) be64_to_cpu(dd->ipath_guid)); - - memcpy(&dd->ipath_eep_st_errs, &ifp->if_errcntp, IPATH_EEP_LOG_CNT); - /* - * Power-on (actually "active") hours are kept as little-endian value - * in EEPROM, but as seconds in a (possibly as small as 24-bit) - * atomic_t while running. - */ - atomic_set(&dd->ipath_active_time, 0); - dd->ipath_eep_hrs = ifp->if_powerhour[0] | (ifp->if_powerhour[1] << 8); - -done: - vfree(buf); - -bail:; -} - -/** - * ipath_update_eeprom_log - copy active-time and error counters to eeprom - * @dd: the infinipath device - * - * Although the time is kept as seconds in the ipath_devdata struct, it is - * rounded to hours for re-write, as we have only 16 bits in EEPROM. - * First-cut code reads whole (expected) struct ipath_flash, modifies, - * re-writes. Future direction: read/write only what we need, assuming - * that the EEPROM had to have been "good enough" for driver init, and - * if not, we aren't making it worse. - * - */ - -int ipath_update_eeprom_log(struct ipath_devdata *dd) -{ - void *buf; - struct ipath_flash *ifp; - int len, hi_water; - uint32_t new_time, new_hrs; - u8 csum; - int ret, idx; - unsigned long flags; - - /* first, check if we actually need to do anything. */ - ret = 0; - for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) { - if (dd->ipath_eep_st_new_errs[idx]) { - ret = 1; - break; - } - } - new_time = atomic_read(&dd->ipath_active_time); - - if (ret == 0 && new_time < 3600) - return 0; - - /* - * The quick-check above determined that there is something worthy - * of logging, so get current contents and do a more detailed idea. - * read full flash, not just currently used part, since it may have - * been written with a newer definition - */ - len = sizeof(struct ipath_flash); - buf = vmalloc(len); - ret = 1; - if (!buf) { - ipath_dev_err(dd, "Couldn't allocate memory to read %u " - "bytes from eeprom for logging\n", len); - goto bail; - } - - /* Grab semaphore and read current EEPROM. If we get an - * error, let go, but if not, keep it until we finish write. - */ - ret = mutex_lock_interruptible(&dd->ipath_eep_lock); - if (ret) { - ipath_dev_err(dd, "Unable to acquire EEPROM for logging\n"); - goto free_bail; - } - ret = ipath_eeprom_internal_read(dd, 0, buf, len); - if (ret) { - mutex_unlock(&dd->ipath_eep_lock); - ipath_dev_err(dd, "Unable read EEPROM for logging\n"); - goto free_bail; - } - ifp = (struct ipath_flash *)buf; - - csum = flash_csum(ifp, 0); - if (csum != ifp->if_csum) { - mutex_unlock(&dd->ipath_eep_lock); - ipath_dev_err(dd, "EEPROM cks err (0x%02X, S/B 0x%02X)\n", - csum, ifp->if_csum); - ret = 1; - goto free_bail; - } - hi_water = 0; - spin_lock_irqsave(&dd->ipath_eep_st_lock, flags); - for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) { - int new_val = dd->ipath_eep_st_new_errs[idx]; - if (new_val) { - /* - * If we have seen any errors, add to EEPROM values - * We need to saturate at 0xFF (255) and we also - * would need to adjust the checksum if we were - * trying to minimize EEPROM traffic - * Note that we add to actual current count in EEPROM, - * in case it was altered while we were running. - */ - new_val += ifp->if_errcntp[idx]; - if (new_val > 0xFF) - new_val = 0xFF; - if (ifp->if_errcntp[idx] != new_val) { - ifp->if_errcntp[idx] = new_val; - hi_water = offsetof(struct ipath_flash, - if_errcntp) + idx; - } - /* - * update our shadow (used to minimize EEPROM - * traffic), to match what we are about to write. - */ - dd->ipath_eep_st_errs[idx] = new_val; - dd->ipath_eep_st_new_errs[idx] = 0; - } - } - /* - * now update active-time. We would like to round to the nearest hour - * but unless atomic_t are sure to be proper signed ints we cannot, - * because we need to account for what we "transfer" to EEPROM and - * if we log an hour at 31 minutes, then we would need to set - * active_time to -29 to accurately count the _next_ hour. - */ - if (new_time >= 3600) { - new_hrs = new_time / 3600; - atomic_sub((new_hrs * 3600), &dd->ipath_active_time); - new_hrs += dd->ipath_eep_hrs; - if (new_hrs > 0xFFFF) - new_hrs = 0xFFFF; - dd->ipath_eep_hrs = new_hrs; - if ((new_hrs & 0xFF) != ifp->if_powerhour[0]) { - ifp->if_powerhour[0] = new_hrs & 0xFF; - hi_water = offsetof(struct ipath_flash, if_powerhour); - } - if ((new_hrs >> 8) != ifp->if_powerhour[1]) { - ifp->if_powerhour[1] = new_hrs >> 8; - hi_water = offsetof(struct ipath_flash, if_powerhour) - + 1; - } - } - /* - * There is a tiny possibility that we could somehow fail to write - * the EEPROM after updating our shadows, but problems from holding - * the spinlock too long are a much bigger issue. - */ - spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags); - if (hi_water) { - /* we made some change to the data, uopdate cksum and write */ - csum = flash_csum(ifp, 1); - ret = ipath_eeprom_internal_write(dd, 0, buf, hi_water + 1); - } - mutex_unlock(&dd->ipath_eep_lock); - if (ret) - ipath_dev_err(dd, "Failed updating EEPROM\n"); - -free_bail: - vfree(buf); -bail: - return ret; - -} - -/** - * ipath_inc_eeprom_err - increment one of the four error counters - * that are logged to EEPROM. - * @dd: the infinipath device - * @eidx: 0..3, the counter to increment - * @incr: how much to add - * - * Each counter is 8-bits, and saturates at 255 (0xFF). They - * are copied to the EEPROM (aka flash) whenever ipath_update_eeprom_log() - * is called, but it can only be called in a context that allows sleep. - * This function can be called even at interrupt level. - */ - -void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr) -{ - uint new_val; - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_eep_st_lock, flags); - new_val = dd->ipath_eep_st_new_errs[eidx] + incr; - if (new_val > 255) - new_val = 255; - dd->ipath_eep_st_new_errs[eidx] = new_val; - spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags); - return; -} - -static int ipath_tempsense_internal_read(struct ipath_devdata *dd, u8 regnum) -{ - int ret; - struct i2c_chain_desc *icd; - - ret = -ENOENT; - - icd = ipath_i2c_type(dd); - if (!icd) - goto bail; - - if (icd->temp_dev == IPATH_NO_DEV) { - /* tempsense only exists on new, real-I2C boards */ - ret = -ENXIO; - goto bail; - } - - if (i2c_startcmd(dd, icd->temp_dev | WRITE_CMD)) { - ipath_dbg("Failed tempsense startcmd\n"); - stop_cmd(dd); - ret = -ENXIO; - goto bail; - } - ret = wr_byte(dd, regnum); - stop_cmd(dd); - if (ret) { - ipath_dev_err(dd, "Failed tempsense WR command %02X\n", - regnum); - ret = -ENXIO; - goto bail; - } - if (i2c_startcmd(dd, icd->temp_dev | READ_CMD)) { - ipath_dbg("Failed tempsense RD startcmd\n"); - stop_cmd(dd); - ret = -ENXIO; - goto bail; - } - /* - * We can only clock out one byte per command, sensibly - */ - ret = rd_byte(dd); - stop_cmd(dd); - -bail: - return ret; -} - -#define VALID_TS_RD_REG_MASK 0xBF - -/** - * ipath_tempsense_read - read register of temp sensor via I2C - * @dd: the infinipath device - * @regnum: register to read from - * - * returns reg contents (0..255) or < 0 for error - */ -int ipath_tempsense_read(struct ipath_devdata *dd, u8 regnum) -{ - int ret; - - if (regnum > 7) - return -EINVAL; - - /* return a bogus value for (the one) register we do not have */ - if (!((1 << regnum) & VALID_TS_RD_REG_MASK)) - return 0; - - ret = mutex_lock_interruptible(&dd->ipath_eep_lock); - if (!ret) { - ret = ipath_tempsense_internal_read(dd, regnum); - mutex_unlock(&dd->ipath_eep_lock); - } - - /* - * There are three possibilities here: - * ret is actual value (0..255) - * ret is -ENXIO or -EINVAL from code in this file - * ret is -EINTR from mutex_lock_interruptible. - */ - return ret; -} - -static int ipath_tempsense_internal_write(struct ipath_devdata *dd, - u8 regnum, u8 data) -{ - int ret = -ENOENT; - struct i2c_chain_desc *icd; - - icd = ipath_i2c_type(dd); - if (!icd) - goto bail; - - if (icd->temp_dev == IPATH_NO_DEV) { - /* tempsense only exists on new, real-I2C boards */ - ret = -ENXIO; - goto bail; - } - if (i2c_startcmd(dd, icd->temp_dev | WRITE_CMD)) { - ipath_dbg("Failed tempsense startcmd\n"); - stop_cmd(dd); - ret = -ENXIO; - goto bail; - } - ret = wr_byte(dd, regnum); - if (ret) { - stop_cmd(dd); - ipath_dev_err(dd, "Failed to write tempsense command %02X\n", - regnum); - ret = -ENXIO; - goto bail; - } - ret = wr_byte(dd, data); - stop_cmd(dd); - ret = i2c_startcmd(dd, icd->temp_dev | READ_CMD); - if (ret) { - ipath_dev_err(dd, "Failed tempsense data wrt to %02X\n", - regnum); - ret = -ENXIO; - } - -bail: - return ret; -} - -#define VALID_TS_WR_REG_MASK ((1 << 9) | (1 << 0xB) | (1 << 0xD)) - -/** - * ipath_tempsense_write - write register of temp sensor via I2C - * @dd: the infinipath device - * @regnum: register to write - * @data: data to write - * - * returns 0 for success or < 0 for error - */ -int ipath_tempsense_write(struct ipath_devdata *dd, u8 regnum, u8 data) -{ - int ret; - - if (regnum > 15 || !((1 << regnum) & VALID_TS_WR_REG_MASK)) - return -EINVAL; - - ret = mutex_lock_interruptible(&dd->ipath_eep_lock); - if (!ret) { - ret = ipath_tempsense_internal_write(dd, regnum, data); - mutex_unlock(&dd->ipath_eep_lock); - } - - /* - * There are three possibilities here: - * ret is 0 for success - * ret is -ENXIO or -EINVAL from code in this file - * ret is -EINTR from mutex_lock_interruptible. - */ - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_file_ops.c b/drivers/staging/rdma/ipath/ipath_file_ops.c deleted file mode 100644 index 6187b848b3ca..000000000000 --- a/drivers/staging/rdma/ipath/ipath_file_ops.c +++ /dev/null @@ -1,2619 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_common.h" -#include "ipath_user_sdma.h" - -static int ipath_open(struct inode *, struct file *); -static int ipath_close(struct inode *, struct file *); -static ssize_t ipath_write(struct file *, const char __user *, size_t, - loff_t *); -static ssize_t ipath_write_iter(struct kiocb *, struct iov_iter *from); -static unsigned int ipath_poll(struct file *, struct poll_table_struct *); -static int ipath_mmap(struct file *, struct vm_area_struct *); - -/* - * This is really, really weird shit - write() and writev() here - * have completely unrelated semantics. Sucky userland ABI, - * film at 11. - */ -static const struct file_operations ipath_file_ops = { - .owner = THIS_MODULE, - .write = ipath_write, - .write_iter = ipath_write_iter, - .open = ipath_open, - .release = ipath_close, - .poll = ipath_poll, - .mmap = ipath_mmap, - .llseek = noop_llseek, -}; - -/* - * Convert kernel virtual addresses to physical addresses so they don't - * potentially conflict with the chip addresses used as mmap offsets. - * It doesn't really matter what mmap offset we use as long as we can - * interpret it correctly. - */ -static u64 cvt_kvaddr(void *p) -{ - struct page *page; - u64 paddr = 0; - - page = vmalloc_to_page(p); - if (page) - paddr = page_to_pfn(page) << PAGE_SHIFT; - - return paddr; -} - -static int ipath_get_base_info(struct file *fp, - void __user *ubase, size_t ubase_size) -{ - struct ipath_portdata *pd = port_fp(fp); - int ret = 0; - struct ipath_base_info *kinfo = NULL; - struct ipath_devdata *dd = pd->port_dd; - unsigned subport_cnt; - int shared, master; - size_t sz; - - subport_cnt = pd->port_subport_cnt; - if (!subport_cnt) { - shared = 0; - master = 0; - subport_cnt = 1; - } else { - shared = 1; - master = !subport_fp(fp); - } - - sz = sizeof(*kinfo); - /* If port sharing is not requested, allow the old size structure */ - if (!shared) - sz -= 7 * sizeof(u64); - if (ubase_size < sz) { - ipath_cdbg(PROC, - "Base size %zu, need %zu (version mismatch?)\n", - ubase_size, sz); - ret = -EINVAL; - goto bail; - } - - kinfo = kzalloc(sizeof(*kinfo), GFP_KERNEL); - if (kinfo == NULL) { - ret = -ENOMEM; - goto bail; - } - - ret = dd->ipath_f_get_base_info(pd, kinfo); - if (ret < 0) - goto bail; - - kinfo->spi_rcvhdr_cnt = dd->ipath_rcvhdrcnt; - kinfo->spi_rcvhdrent_size = dd->ipath_rcvhdrentsize; - kinfo->spi_tidegrcnt = dd->ipath_rcvegrcnt; - kinfo->spi_rcv_egrbufsize = dd->ipath_rcvegrbufsize; - /* - * have to mmap whole thing - */ - kinfo->spi_rcv_egrbuftotlen = - pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size; - kinfo->spi_rcv_egrperchunk = pd->port_rcvegrbufs_perchunk; - kinfo->spi_rcv_egrchunksize = kinfo->spi_rcv_egrbuftotlen / - pd->port_rcvegrbuf_chunks; - kinfo->spi_tidcnt = dd->ipath_rcvtidcnt / subport_cnt; - if (master) - kinfo->spi_tidcnt += dd->ipath_rcvtidcnt % subport_cnt; - /* - * for this use, may be ipath_cfgports summed over all chips that - * are are configured and present - */ - kinfo->spi_nports = dd->ipath_cfgports; - /* unit (chip/board) our port is on */ - kinfo->spi_unit = dd->ipath_unit; - /* for now, only a single page */ - kinfo->spi_tid_maxsize = PAGE_SIZE; - - /* - * Doing this per port, and based on the skip value, etc. This has - * to be the actual buffer size, since the protocol code treats it - * as an array. - * - * These have to be set to user addresses in the user code via mmap. - * These values are used on return to user code for the mmap target - * addresses only. For 32 bit, same 44 bit address problem, so use - * the physical address, not virtual. Before 2.6.11, using the - * page_address() macro worked, but in 2.6.11, even that returns the - * full 64 bit address (upper bits all 1's). So far, using the - * physical addresses (or chip offsets, for chip mapping) works, but - * no doubt some future kernel release will change that, and we'll be - * on to yet another method of dealing with this. - */ - kinfo->spi_rcvhdr_base = (u64) pd->port_rcvhdrq_phys; - kinfo->spi_rcvhdr_tailaddr = (u64) pd->port_rcvhdrqtailaddr_phys; - kinfo->spi_rcv_egrbufs = (u64) pd->port_rcvegr_phys; - kinfo->spi_pioavailaddr = (u64) dd->ipath_pioavailregs_phys; - kinfo->spi_status = (u64) kinfo->spi_pioavailaddr + - (void *) dd->ipath_statusp - - (void *) dd->ipath_pioavailregs_dma; - if (!shared) { - kinfo->spi_piocnt = pd->port_piocnt; - kinfo->spi_piobufbase = (u64) pd->port_piobufs; - kinfo->__spi_uregbase = (u64) dd->ipath_uregbase + - dd->ipath_ureg_align * pd->port_port; - } else if (master) { - kinfo->spi_piocnt = (pd->port_piocnt / subport_cnt) + - (pd->port_piocnt % subport_cnt); - /* Master's PIO buffers are after all the slave's */ - kinfo->spi_piobufbase = (u64) pd->port_piobufs + - dd->ipath_palign * - (pd->port_piocnt - kinfo->spi_piocnt); - } else { - unsigned slave = subport_fp(fp) - 1; - - kinfo->spi_piocnt = pd->port_piocnt / subport_cnt; - kinfo->spi_piobufbase = (u64) pd->port_piobufs + - dd->ipath_palign * kinfo->spi_piocnt * slave; - } - - if (shared) { - kinfo->spi_port_uregbase = (u64) dd->ipath_uregbase + - dd->ipath_ureg_align * pd->port_port; - kinfo->spi_port_rcvegrbuf = kinfo->spi_rcv_egrbufs; - kinfo->spi_port_rcvhdr_base = kinfo->spi_rcvhdr_base; - kinfo->spi_port_rcvhdr_tailaddr = kinfo->spi_rcvhdr_tailaddr; - - kinfo->__spi_uregbase = cvt_kvaddr(pd->subport_uregbase + - PAGE_SIZE * subport_fp(fp)); - - kinfo->spi_rcvhdr_base = cvt_kvaddr(pd->subport_rcvhdr_base + - pd->port_rcvhdrq_size * subport_fp(fp)); - kinfo->spi_rcvhdr_tailaddr = 0; - kinfo->spi_rcv_egrbufs = cvt_kvaddr(pd->subport_rcvegrbuf + - pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size * - subport_fp(fp)); - - kinfo->spi_subport_uregbase = - cvt_kvaddr(pd->subport_uregbase); - kinfo->spi_subport_rcvegrbuf = - cvt_kvaddr(pd->subport_rcvegrbuf); - kinfo->spi_subport_rcvhdr_base = - cvt_kvaddr(pd->subport_rcvhdr_base); - ipath_cdbg(PROC, "port %u flags %x %llx %llx %llx\n", - kinfo->spi_port, kinfo->spi_runtime_flags, - (unsigned long long) kinfo->spi_subport_uregbase, - (unsigned long long) kinfo->spi_subport_rcvegrbuf, - (unsigned long long) kinfo->spi_subport_rcvhdr_base); - } - - /* - * All user buffers are 2KB buffers. If we ever support - * giving 4KB buffers to user processes, this will need some - * work. - */ - kinfo->spi_pioindex = (kinfo->spi_piobufbase - - (dd->ipath_piobufbase & 0xffffffff)) / dd->ipath_palign; - kinfo->spi_pioalign = dd->ipath_palign; - - kinfo->spi_qpair = IPATH_KD_QP; - /* - * user mode PIO buffers are always 2KB, even when 4KB can - * be received, and sent via the kernel; this is ibmaxlen - * for 2K MTU. - */ - kinfo->spi_piosize = dd->ipath_piosize2k - 2 * sizeof(u32); - kinfo->spi_mtu = dd->ipath_ibmaxlen; /* maxlen, not ibmtu */ - kinfo->spi_port = pd->port_port; - kinfo->spi_subport = subport_fp(fp); - kinfo->spi_sw_version = IPATH_KERN_SWVERSION; - kinfo->spi_hw_version = dd->ipath_revision; - - if (master) { - kinfo->spi_runtime_flags |= IPATH_RUNTIME_MASTER; - } - - sz = (ubase_size < sizeof(*kinfo)) ? ubase_size : sizeof(*kinfo); - if (copy_to_user(ubase, kinfo, sz)) - ret = -EFAULT; - -bail: - kfree(kinfo); - return ret; -} - -/** - * ipath_tid_update - update a port TID - * @pd: the port - * @fp: the ipath device file - * @ti: the TID information - * - * The new implementation as of Oct 2004 is that the driver assigns - * the tid and returns it to the caller. To make it easier to - * catch bugs, and to reduce search time, we keep a cursor for - * each port, walking the shadow tid array to find one that's not - * in use. - * - * For now, if we can't allocate the full list, we fail, although - * in the long run, we'll allocate as many as we can, and the - * caller will deal with that by trying the remaining pages later. - * That means that when we fail, we have to mark the tids as not in - * use again, in our shadow copy. - * - * It's up to the caller to free the tids when they are done. - * We'll unlock the pages as they free them. - * - * Also, right now we are locking one page at a time, but since - * the intended use of this routine is for a single group of - * virtually contiguous pages, that should change to improve - * performance. - */ -static int ipath_tid_update(struct ipath_portdata *pd, struct file *fp, - const struct ipath_tid_info *ti) -{ - int ret = 0, ntids; - u32 tid, porttid, cnt, i, tidcnt, tidoff; - u16 *tidlist; - struct ipath_devdata *dd = pd->port_dd; - u64 physaddr; - unsigned long vaddr; - u64 __iomem *tidbase; - unsigned long tidmap[8]; - struct page **pagep = NULL; - unsigned subport = subport_fp(fp); - - if (!dd->ipath_pageshadow) { - ret = -ENOMEM; - goto done; - } - - cnt = ti->tidcnt; - if (!cnt) { - ipath_dbg("After copyin, tidcnt 0, tidlist %llx\n", - (unsigned long long) ti->tidlist); - /* - * Should we treat as success? likely a bug - */ - ret = -EFAULT; - goto done; - } - porttid = pd->port_port * dd->ipath_rcvtidcnt; - if (!pd->port_subport_cnt) { - tidcnt = dd->ipath_rcvtidcnt; - tid = pd->port_tidcursor; - tidoff = 0; - } else if (!subport) { - tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + - (dd->ipath_rcvtidcnt % pd->port_subport_cnt); - tidoff = dd->ipath_rcvtidcnt - tidcnt; - porttid += tidoff; - tid = tidcursor_fp(fp); - } else { - tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; - tidoff = tidcnt * (subport - 1); - porttid += tidoff; - tid = tidcursor_fp(fp); - } - if (cnt > tidcnt) { - /* make sure it all fits in port_tid_pg_list */ - dev_info(&dd->pcidev->dev, "Process tried to allocate %u " - "TIDs, only trying max (%u)\n", cnt, tidcnt); - cnt = tidcnt; - } - pagep = &((struct page **) pd->port_tid_pg_list)[tidoff]; - tidlist = &((u16 *) &pagep[dd->ipath_rcvtidcnt])[tidoff]; - - memset(tidmap, 0, sizeof(tidmap)); - /* before decrement; chip actual # */ - ntids = tidcnt; - tidbase = (u64 __iomem *) (((char __iomem *) dd->ipath_kregbase) + - dd->ipath_rcvtidbase + - porttid * sizeof(*tidbase)); - - ipath_cdbg(VERBOSE, "Port%u %u tids, cursor %u, tidbase %p\n", - pd->port_port, cnt, tid, tidbase); - - /* virtual address of first page in transfer */ - vaddr = ti->tidvaddr; - if (!access_ok(VERIFY_WRITE, (void __user *) vaddr, - cnt * PAGE_SIZE)) { - ipath_dbg("Fail vaddr %p, %u pages, !access_ok\n", - (void *)vaddr, cnt); - ret = -EFAULT; - goto done; - } - ret = ipath_get_user_pages(vaddr, cnt, pagep); - if (ret) { - if (ret == -EBUSY) { - ipath_dbg("Failed to lock addr %p, %u pages " - "(already locked)\n", - (void *) vaddr, cnt); - /* - * for now, continue, and see what happens but with - * the new implementation, this should never happen, - * unless perhaps the user has mpin'ed the pages - * themselves (something we need to test) - */ - ret = 0; - } else { - dev_info(&dd->pcidev->dev, - "Failed to lock addr %p, %u pages: " - "errno %d\n", (void *) vaddr, cnt, -ret); - goto done; - } - } - for (i = 0; i < cnt; i++, vaddr += PAGE_SIZE) { - for (; ntids--; tid++) { - if (tid == tidcnt) - tid = 0; - if (!dd->ipath_pageshadow[porttid + tid]) - break; - } - if (ntids < 0) { - /* - * oops, wrapped all the way through their TIDs, - * and didn't have enough free; see comments at - * start of routine - */ - ipath_dbg("Not enough free TIDs for %u pages " - "(index %d), failing\n", cnt, i); - i--; /* last tidlist[i] not filled in */ - ret = -ENOMEM; - break; - } - tidlist[i] = tid + tidoff; - ipath_cdbg(VERBOSE, "Updating idx %u to TID %u, " - "vaddr %lx\n", i, tid + tidoff, vaddr); - /* we "know" system pages and TID pages are same size */ - dd->ipath_pageshadow[porttid + tid] = pagep[i]; - dd->ipath_physshadow[porttid + tid] = ipath_map_page( - dd->pcidev, pagep[i], 0, PAGE_SIZE, - PCI_DMA_FROMDEVICE); - /* - * don't need atomic or it's overhead - */ - __set_bit(tid, tidmap); - physaddr = dd->ipath_physshadow[porttid + tid]; - ipath_stats.sps_pagelocks++; - ipath_cdbg(VERBOSE, - "TID %u, vaddr %lx, physaddr %llx pgp %p\n", - tid, vaddr, (unsigned long long) physaddr, - pagep[i]); - dd->ipath_f_put_tid(dd, &tidbase[tid], RCVHQ_RCV_TYPE_EXPECTED, - physaddr); - /* - * don't check this tid in ipath_portshadow, since we - * just filled it in; start with the next one. - */ - tid++; - } - - if (ret) { - u32 limit; - cleanup: - /* jump here if copy out of updated info failed... */ - ipath_dbg("After failure (ret=%d), undo %d of %d entries\n", - -ret, i, cnt); - /* same code that's in ipath_free_tid() */ - limit = sizeof(tidmap) * BITS_PER_BYTE; - if (limit > tidcnt) - /* just in case size changes in future */ - limit = tidcnt; - tid = find_first_bit((const unsigned long *)tidmap, limit); - for (; tid < limit; tid++) { - if (!test_bit(tid, tidmap)) - continue; - if (dd->ipath_pageshadow[porttid + tid]) { - ipath_cdbg(VERBOSE, "Freeing TID %u\n", - tid); - dd->ipath_f_put_tid(dd, &tidbase[tid], - RCVHQ_RCV_TYPE_EXPECTED, - dd->ipath_tidinvalid); - pci_unmap_page(dd->pcidev, - dd->ipath_physshadow[porttid + tid], - PAGE_SIZE, PCI_DMA_FROMDEVICE); - dd->ipath_pageshadow[porttid + tid] = NULL; - ipath_stats.sps_pageunlocks++; - } - } - ipath_release_user_pages(pagep, cnt); - } else { - /* - * Copy the updated array, with ipath_tid's filled in, back - * to user. Since we did the copy in already, this "should - * never fail" If it does, we have to clean up... - */ - if (copy_to_user((void __user *) - (unsigned long) ti->tidlist, - tidlist, cnt * sizeof(*tidlist))) { - ret = -EFAULT; - goto cleanup; - } - if (copy_to_user((void __user *) (unsigned long) ti->tidmap, - tidmap, sizeof tidmap)) { - ret = -EFAULT; - goto cleanup; - } - if (tid == tidcnt) - tid = 0; - if (!pd->port_subport_cnt) - pd->port_tidcursor = tid; - else - tidcursor_fp(fp) = tid; - } - -done: - if (ret) - ipath_dbg("Failed to map %u TID pages, failing with %d\n", - ti->tidcnt, -ret); - return ret; -} - -/** - * ipath_tid_free - free a port TID - * @pd: the port - * @subport: the subport - * @ti: the TID info - * - * right now we are unlocking one page at a time, but since - * the intended use of this routine is for a single group of - * virtually contiguous pages, that should change to improve - * performance. We check that the TID is in range for this port - * but otherwise don't check validity; if user has an error and - * frees the wrong tid, it's only their own data that can thereby - * be corrupted. We do check that the TID was in use, for sanity - * We always use our idea of the saved address, not the address that - * they pass in to us. - */ - -static int ipath_tid_free(struct ipath_portdata *pd, unsigned subport, - const struct ipath_tid_info *ti) -{ - int ret = 0; - u32 tid, porttid, cnt, limit, tidcnt; - struct ipath_devdata *dd = pd->port_dd; - u64 __iomem *tidbase; - unsigned long tidmap[8]; - - if (!dd->ipath_pageshadow) { - ret = -ENOMEM; - goto done; - } - - if (copy_from_user(tidmap, (void __user *)(unsigned long)ti->tidmap, - sizeof tidmap)) { - ret = -EFAULT; - goto done; - } - - porttid = pd->port_port * dd->ipath_rcvtidcnt; - if (!pd->port_subport_cnt) - tidcnt = dd->ipath_rcvtidcnt; - else if (!subport) { - tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + - (dd->ipath_rcvtidcnt % pd->port_subport_cnt); - porttid += dd->ipath_rcvtidcnt - tidcnt; - } else { - tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; - porttid += tidcnt * (subport - 1); - } - tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) + - dd->ipath_rcvtidbase + - porttid * sizeof(*tidbase)); - - limit = sizeof(tidmap) * BITS_PER_BYTE; - if (limit > tidcnt) - /* just in case size changes in future */ - limit = tidcnt; - tid = find_first_bit(tidmap, limit); - ipath_cdbg(VERBOSE, "Port%u free %u tids; first bit (max=%d) " - "set is %d, porttid %u\n", pd->port_port, ti->tidcnt, - limit, tid, porttid); - for (cnt = 0; tid < limit; tid++) { - /* - * small optimization; if we detect a run of 3 or so without - * any set, use find_first_bit again. That's mainly to - * accelerate the case where we wrapped, so we have some at - * the beginning, and some at the end, and a big gap - * in the middle. - */ - if (!test_bit(tid, tidmap)) - continue; - cnt++; - if (dd->ipath_pageshadow[porttid + tid]) { - struct page *p; - p = dd->ipath_pageshadow[porttid + tid]; - dd->ipath_pageshadow[porttid + tid] = NULL; - ipath_cdbg(VERBOSE, "PID %u freeing TID %u\n", - pid_nr(pd->port_pid), tid); - dd->ipath_f_put_tid(dd, &tidbase[tid], - RCVHQ_RCV_TYPE_EXPECTED, - dd->ipath_tidinvalid); - pci_unmap_page(dd->pcidev, - dd->ipath_physshadow[porttid + tid], - PAGE_SIZE, PCI_DMA_FROMDEVICE); - ipath_release_user_pages(&p, 1); - ipath_stats.sps_pageunlocks++; - } else - ipath_dbg("Unused tid %u, ignoring\n", tid); - } - if (cnt != ti->tidcnt) - ipath_dbg("passed in tidcnt %d, only %d bits set in map\n", - ti->tidcnt, cnt); -done: - if (ret) - ipath_dbg("Failed to unmap %u TID pages, failing with %d\n", - ti->tidcnt, -ret); - return ret; -} - -/** - * ipath_set_part_key - set a partition key - * @pd: the port - * @key: the key - * - * We can have up to 4 active at a time (other than the default, which is - * always allowed). This is somewhat tricky, since multiple ports may set - * the same key, so we reference count them, and clean up at exit. All 4 - * partition keys are packed into a single infinipath register. It's an - * error for a process to set the same pkey multiple times. We provide no - * mechanism to de-allocate a pkey at this time, we may eventually need to - * do that. I've used the atomic operations, and no locking, and only make - * a single pass through what's available. This should be more than - * adequate for some time. I'll think about spinlocks or the like if and as - * it's necessary. - */ -static int ipath_set_part_key(struct ipath_portdata *pd, u16 key) -{ - struct ipath_devdata *dd = pd->port_dd; - int i, any = 0, pidx = -1; - u16 lkey = key & 0x7FFF; - int ret; - - if (lkey == (IPATH_DEFAULT_P_KEY & 0x7FFF)) { - /* nothing to do; this key always valid */ - ret = 0; - goto bail; - } - - ipath_cdbg(VERBOSE, "p%u try to set pkey %hx, current keys " - "%hx:%x %hx:%x %hx:%x %hx:%x\n", - pd->port_port, key, dd->ipath_pkeys[0], - atomic_read(&dd->ipath_pkeyrefs[0]), dd->ipath_pkeys[1], - atomic_read(&dd->ipath_pkeyrefs[1]), dd->ipath_pkeys[2], - atomic_read(&dd->ipath_pkeyrefs[2]), dd->ipath_pkeys[3], - atomic_read(&dd->ipath_pkeyrefs[3])); - - if (!lkey) { - ipath_cdbg(PROC, "p%u tries to set key 0, not allowed\n", - pd->port_port); - ret = -EINVAL; - goto bail; - } - - /* - * Set the full membership bit, because it has to be - * set in the register or the packet, and it seems - * cleaner to set in the register than to force all - * callers to set it. (see bug 4331) - */ - key |= 0x8000; - - for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { - if (!pd->port_pkeys[i] && pidx == -1) - pidx = i; - if (pd->port_pkeys[i] == key) { - ipath_cdbg(VERBOSE, "p%u tries to set same pkey " - "(%x) more than once\n", - pd->port_port, key); - ret = -EEXIST; - goto bail; - } - } - if (pidx == -1) { - ipath_dbg("All pkeys for port %u already in use, " - "can't set %x\n", pd->port_port, key); - ret = -EBUSY; - goto bail; - } - for (any = i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i]) { - any++; - continue; - } - if (dd->ipath_pkeys[i] == key) { - atomic_t *pkrefs = &dd->ipath_pkeyrefs[i]; - - if (atomic_inc_return(pkrefs) > 1) { - pd->port_pkeys[pidx] = key; - ipath_cdbg(VERBOSE, "p%u set key %x " - "matches #%d, count now %d\n", - pd->port_port, key, i, - atomic_read(pkrefs)); - ret = 0; - goto bail; - } else { - /* - * lost race, decrement count, catch below - */ - atomic_dec(pkrefs); - ipath_cdbg(VERBOSE, "Lost race, count was " - "0, after dec, it's %d\n", - atomic_read(pkrefs)); - any++; - } - } - if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { - /* - * It makes no sense to have both the limited and - * full membership PKEY set at the same time since - * the unlimited one will disable the limited one. - */ - ret = -EEXIST; - goto bail; - } - } - if (!any) { - ipath_dbg("port %u, all pkeys already in use, " - "can't set %x\n", pd->port_port, key); - ret = -EBUSY; - goto bail; - } - for (any = i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i] && - atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { - u64 pkey; - - /* for ipathstats, etc. */ - ipath_stats.sps_pkeys[i] = lkey; - pd->port_pkeys[pidx] = dd->ipath_pkeys[i] = key; - pkey = - (u64) dd->ipath_pkeys[0] | - ((u64) dd->ipath_pkeys[1] << 16) | - ((u64) dd->ipath_pkeys[2] << 32) | - ((u64) dd->ipath_pkeys[3] << 48); - ipath_cdbg(PROC, "p%u set key %x in #%d, " - "portidx %d, new pkey reg %llx\n", - pd->port_port, key, i, pidx, - (unsigned long long) pkey); - ipath_write_kreg( - dd, dd->ipath_kregs->kr_partitionkey, pkey); - - ret = 0; - goto bail; - } - } - ipath_dbg("port %u, all pkeys already in use 2nd pass, " - "can't set %x\n", pd->port_port, key); - ret = -EBUSY; - -bail: - return ret; -} - -/** - * ipath_manage_rcvq - manage a port's receive queue - * @pd: the port - * @subport: the subport - * @start_stop: action to carry out - * - * start_stop == 0 disables receive on the port, for use in queue - * overflow conditions. start_stop==1 re-enables, to be used to - * re-init the software copy of the head register - */ -static int ipath_manage_rcvq(struct ipath_portdata *pd, unsigned subport, - int start_stop) -{ - struct ipath_devdata *dd = pd->port_dd; - - ipath_cdbg(PROC, "%sabling rcv for unit %u port %u:%u\n", - start_stop ? "en" : "dis", dd->ipath_unit, - pd->port_port, subport); - if (subport) - goto bail; - /* atomically clear receive enable port. */ - if (start_stop) { - /* - * On enable, force in-memory copy of the tail register to - * 0, so that protocol code doesn't have to worry about - * whether or not the chip has yet updated the in-memory - * copy or not on return from the system call. The chip - * always resets it's tail register back to 0 on a - * transition from disabled to enabled. This could cause a - * problem if software was broken, and did the enable w/o - * the disable, but eventually the in-memory copy will be - * updated and correct itself, even in the face of software - * bugs. - */ - if (pd->port_rcvhdrtail_kvaddr) - ipath_clear_rcvhdrtail(pd); - set_bit(dd->ipath_r_portenable_shift + pd->port_port, - &dd->ipath_rcvctrl); - } else - clear_bit(dd->ipath_r_portenable_shift + pd->port_port, - &dd->ipath_rcvctrl); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - /* now be sure chip saw it before we return */ - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - if (start_stop) { - /* - * And try to be sure that tail reg update has happened too. - * This should in theory interlock with the RXE changes to - * the tail register. Don't assign it to the tail register - * in memory copy, since we could overwrite an update by the - * chip if we did. - */ - ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); - } - /* always; new head should be equal to new tail; see above */ -bail: - return 0; -} - -static void ipath_clean_part_key(struct ipath_portdata *pd, - struct ipath_devdata *dd) -{ - int i, j, pchanged = 0; - u64 oldpkey; - - /* for debugging only */ - oldpkey = (u64) dd->ipath_pkeys[0] | - ((u64) dd->ipath_pkeys[1] << 16) | - ((u64) dd->ipath_pkeys[2] << 32) | - ((u64) dd->ipath_pkeys[3] << 48); - - for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { - if (!pd->port_pkeys[i]) - continue; - ipath_cdbg(VERBOSE, "look for key[%d] %hx in pkeys\n", i, - pd->port_pkeys[i]); - for (j = 0; j < ARRAY_SIZE(dd->ipath_pkeys); j++) { - /* check for match independent of the global bit */ - if ((dd->ipath_pkeys[j] & 0x7fff) != - (pd->port_pkeys[i] & 0x7fff)) - continue; - if (atomic_dec_and_test(&dd->ipath_pkeyrefs[j])) { - ipath_cdbg(VERBOSE, "p%u clear key " - "%x matches #%d\n", - pd->port_port, - pd->port_pkeys[i], j); - ipath_stats.sps_pkeys[j] = - dd->ipath_pkeys[j] = 0; - pchanged++; - } else { - ipath_cdbg(VERBOSE, "p%u key %x matches #%d, " - "but ref still %d\n", pd->port_port, - pd->port_pkeys[i], j, - atomic_read(&dd->ipath_pkeyrefs[j])); - break; - } - } - pd->port_pkeys[i] = 0; - } - if (pchanged) { - u64 pkey = (u64) dd->ipath_pkeys[0] | - ((u64) dd->ipath_pkeys[1] << 16) | - ((u64) dd->ipath_pkeys[2] << 32) | - ((u64) dd->ipath_pkeys[3] << 48); - ipath_cdbg(VERBOSE, "p%u old pkey reg %llx, " - "new pkey reg %llx\n", pd->port_port, - (unsigned long long) oldpkey, - (unsigned long long) pkey); - ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, - pkey); - } -} - -/* - * Initialize the port data with the receive buffer sizes - * so this can be done while the master port is locked. - * Otherwise, there is a race with a slave opening the port - * and seeing these fields uninitialized. - */ -static void init_user_egr_sizes(struct ipath_portdata *pd) -{ - struct ipath_devdata *dd = pd->port_dd; - unsigned egrperchunk, egrcnt, size; - - /* - * to avoid wasting a lot of memory, we allocate 32KB chunks of - * physically contiguous memory, advance through it until used up - * and then allocate more. Of course, we need memory to store those - * extra pointers, now. Started out with 256KB, but under heavy - * memory pressure (creating large files and then copying them over - * NFS while doing lots of MPI jobs), we hit some allocation - * failures, even though we can sleep... (2.6.10) Still get - * failures at 64K. 32K is the lowest we can go without wasting - * additional memory. - */ - size = 0x8000; - egrperchunk = size / dd->ipath_rcvegrbufsize; - egrcnt = dd->ipath_rcvegrcnt; - pd->port_rcvegrbuf_chunks = (egrcnt + egrperchunk - 1) / egrperchunk; - pd->port_rcvegrbufs_perchunk = egrperchunk; - pd->port_rcvegrbuf_size = size; -} - -/** - * ipath_create_user_egr - allocate eager TID buffers - * @pd: the port to allocate TID buffers for - * - * This routine is now quite different for user and kernel, because - * the kernel uses skb's, for the accelerated network performance - * This is the user port version - * - * Allocate the eager TID buffers and program them into infinipath - * They are no longer completely contiguous, we do multiple allocation - * calls. - */ -static int ipath_create_user_egr(struct ipath_portdata *pd) -{ - struct ipath_devdata *dd = pd->port_dd; - unsigned e, egrcnt, egrperchunk, chunk, egrsize, egroff; - size_t size; - int ret; - gfp_t gfp_flags; - - /* - * GFP_USER, but without GFP_FS, so buffer cache can be - * coalesced (we hope); otherwise, even at order 4, - * heavy filesystem activity makes these fail, and we can - * use compound pages. - */ - gfp_flags = __GFP_RECLAIM | __GFP_IO | __GFP_COMP; - - egrcnt = dd->ipath_rcvegrcnt; - /* TID number offset for this port */ - egroff = (pd->port_port - 1) * egrcnt + dd->ipath_p0_rcvegrcnt; - egrsize = dd->ipath_rcvegrbufsize; - ipath_cdbg(VERBOSE, "Allocating %d egr buffers, at egrtid " - "offset %x, egrsize %u\n", egrcnt, egroff, egrsize); - - chunk = pd->port_rcvegrbuf_chunks; - egrperchunk = pd->port_rcvegrbufs_perchunk; - size = pd->port_rcvegrbuf_size; - pd->port_rcvegrbuf = kmalloc_array(chunk, sizeof(pd->port_rcvegrbuf[0]), - GFP_KERNEL); - if (!pd->port_rcvegrbuf) { - ret = -ENOMEM; - goto bail; - } - pd->port_rcvegrbuf_phys = - kmalloc_array(chunk, sizeof(pd->port_rcvegrbuf_phys[0]), - GFP_KERNEL); - if (!pd->port_rcvegrbuf_phys) { - ret = -ENOMEM; - goto bail_rcvegrbuf; - } - for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { - - pd->port_rcvegrbuf[e] = dma_alloc_coherent( - &dd->pcidev->dev, size, &pd->port_rcvegrbuf_phys[e], - gfp_flags); - - if (!pd->port_rcvegrbuf[e]) { - ret = -ENOMEM; - goto bail_rcvegrbuf_phys; - } - } - - pd->port_rcvegr_phys = pd->port_rcvegrbuf_phys[0]; - - for (e = chunk = 0; chunk < pd->port_rcvegrbuf_chunks; chunk++) { - dma_addr_t pa = pd->port_rcvegrbuf_phys[chunk]; - unsigned i; - - for (i = 0; e < egrcnt && i < egrperchunk; e++, i++) { - dd->ipath_f_put_tid(dd, e + egroff + - (u64 __iomem *) - ((char __iomem *) - dd->ipath_kregbase + - dd->ipath_rcvegrbase), - RCVHQ_RCV_TYPE_EAGER, pa); - pa += egrsize; - } - cond_resched(); /* don't hog the cpu */ - } - - ret = 0; - goto bail; - -bail_rcvegrbuf_phys: - for (e = 0; e < pd->port_rcvegrbuf_chunks && - pd->port_rcvegrbuf[e]; e++) { - dma_free_coherent(&dd->pcidev->dev, size, - pd->port_rcvegrbuf[e], - pd->port_rcvegrbuf_phys[e]); - - } - kfree(pd->port_rcvegrbuf_phys); - pd->port_rcvegrbuf_phys = NULL; -bail_rcvegrbuf: - kfree(pd->port_rcvegrbuf); - pd->port_rcvegrbuf = NULL; -bail: - return ret; -} - - -/* common code for the mappings on dma_alloc_coherent mem */ -static int ipath_mmap_mem(struct vm_area_struct *vma, - struct ipath_portdata *pd, unsigned len, int write_ok, - void *kvaddr, char *what) -{ - struct ipath_devdata *dd = pd->port_dd; - unsigned long pfn; - int ret; - - if ((vma->vm_end - vma->vm_start) > len) { - dev_info(&dd->pcidev->dev, - "FAIL on %s: len %lx > %x\n", what, - vma->vm_end - vma->vm_start, len); - ret = -EFAULT; - goto bail; - } - - if (!write_ok) { - if (vma->vm_flags & VM_WRITE) { - dev_info(&dd->pcidev->dev, - "%s must be mapped readonly\n", what); - ret = -EPERM; - goto bail; - } - - /* don't allow them to later change with mprotect */ - vma->vm_flags &= ~VM_MAYWRITE; - } - - pfn = virt_to_phys(kvaddr) >> PAGE_SHIFT; - ret = remap_pfn_range(vma, vma->vm_start, pfn, - len, vma->vm_page_prot); - if (ret) - dev_info(&dd->pcidev->dev, "%s port%u mmap of %lx, %x " - "bytes r%c failed: %d\n", what, pd->port_port, - pfn, len, write_ok?'w':'o', ret); - else - ipath_cdbg(VERBOSE, "%s port%u mmaped %lx, %x bytes " - "r%c\n", what, pd->port_port, pfn, len, - write_ok?'w':'o'); -bail: - return ret; -} - -static int mmap_ureg(struct vm_area_struct *vma, struct ipath_devdata *dd, - u64 ureg) -{ - unsigned long phys; - int ret; - - /* - * This is real hardware, so use io_remap. This is the mechanism - * for the user process to update the head registers for their port - * in the chip. - */ - if ((vma->vm_end - vma->vm_start) > PAGE_SIZE) { - dev_info(&dd->pcidev->dev, "FAIL mmap userreg: reqlen " - "%lx > PAGE\n", vma->vm_end - vma->vm_start); - ret = -EFAULT; - } else { - phys = dd->ipath_physaddr + ureg; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; - ret = io_remap_pfn_range(vma, vma->vm_start, - phys >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); - } - return ret; -} - -static int mmap_piobufs(struct vm_area_struct *vma, - struct ipath_devdata *dd, - struct ipath_portdata *pd, - unsigned piobufs, unsigned piocnt) -{ - unsigned long phys; - int ret; - - /* - * When we map the PIO buffers in the chip, we want to map them as - * writeonly, no read possible. This prevents access to previous - * process data, and catches users who might try to read the i/o - * space due to a bug. - */ - if ((vma->vm_end - vma->vm_start) > (piocnt * dd->ipath_palign)) { - dev_info(&dd->pcidev->dev, "FAIL mmap piobufs: " - "reqlen %lx > PAGE\n", - vma->vm_end - vma->vm_start); - ret = -EINVAL; - goto bail; - } - - phys = dd->ipath_physaddr + piobufs; - -#if defined(__powerpc__) - /* There isn't a generic way to specify writethrough mappings */ - pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; - pgprot_val(vma->vm_page_prot) |= _PAGE_WRITETHRU; - pgprot_val(vma->vm_page_prot) &= ~_PAGE_GUARDED; -#endif - - /* - * don't allow them to later change to readable with mprotect (for when - * not initially mapped readable, as is normally the case) - */ - vma->vm_flags &= ~VM_MAYREAD; - vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; - - ret = io_remap_pfn_range(vma, vma->vm_start, phys >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -bail: - return ret; -} - -static int mmap_rcvegrbufs(struct vm_area_struct *vma, - struct ipath_portdata *pd) -{ - struct ipath_devdata *dd = pd->port_dd; - unsigned long start, size; - size_t total_size, i; - unsigned long pfn; - int ret; - - size = pd->port_rcvegrbuf_size; - total_size = pd->port_rcvegrbuf_chunks * size; - if ((vma->vm_end - vma->vm_start) > total_size) { - dev_info(&dd->pcidev->dev, "FAIL on egr bufs: " - "reqlen %lx > actual %lx\n", - vma->vm_end - vma->vm_start, - (unsigned long) total_size); - ret = -EINVAL; - goto bail; - } - - if (vma->vm_flags & VM_WRITE) { - dev_info(&dd->pcidev->dev, "Can't map eager buffers as " - "writable (flags=%lx)\n", vma->vm_flags); - ret = -EPERM; - goto bail; - } - /* don't allow them to later change to writeable with mprotect */ - vma->vm_flags &= ~VM_MAYWRITE; - - start = vma->vm_start; - - for (i = 0; i < pd->port_rcvegrbuf_chunks; i++, start += size) { - pfn = virt_to_phys(pd->port_rcvegrbuf[i]) >> PAGE_SHIFT; - ret = remap_pfn_range(vma, start, pfn, size, - vma->vm_page_prot); - if (ret < 0) - goto bail; - } - ret = 0; - -bail: - return ret; -} - -/* - * ipath_file_vma_fault - handle a VMA page fault. - */ -static int ipath_file_vma_fault(struct vm_area_struct *vma, - struct vm_fault *vmf) -{ - struct page *page; - - page = vmalloc_to_page((void *)(vmf->pgoff << PAGE_SHIFT)); - if (!page) - return VM_FAULT_SIGBUS; - get_page(page); - vmf->page = page; - - return 0; -} - -static const struct vm_operations_struct ipath_file_vm_ops = { - .fault = ipath_file_vma_fault, -}; - -static int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr, - struct ipath_portdata *pd, unsigned subport) -{ - unsigned long len; - struct ipath_devdata *dd; - void *addr; - size_t size; - int ret = 0; - - /* If the port is not shared, all addresses should be physical */ - if (!pd->port_subport_cnt) - goto bail; - - dd = pd->port_dd; - size = pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size; - - /* - * Each process has all the subport uregbase, rcvhdrq, and - * rcvegrbufs mmapped - as an array for all the processes, - * and also separately for this process. - */ - if (pgaddr == cvt_kvaddr(pd->subport_uregbase)) { - addr = pd->subport_uregbase; - size = PAGE_SIZE * pd->port_subport_cnt; - } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base)) { - addr = pd->subport_rcvhdr_base; - size = pd->port_rcvhdrq_size * pd->port_subport_cnt; - } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf)) { - addr = pd->subport_rcvegrbuf; - size *= pd->port_subport_cnt; - } else if (pgaddr == cvt_kvaddr(pd->subport_uregbase + - PAGE_SIZE * subport)) { - addr = pd->subport_uregbase + PAGE_SIZE * subport; - size = PAGE_SIZE; - } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base + - pd->port_rcvhdrq_size * subport)) { - addr = pd->subport_rcvhdr_base + - pd->port_rcvhdrq_size * subport; - size = pd->port_rcvhdrq_size; - } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf + - size * subport)) { - addr = pd->subport_rcvegrbuf + size * subport; - /* rcvegrbufs are read-only on the slave */ - if (vma->vm_flags & VM_WRITE) { - dev_info(&dd->pcidev->dev, - "Can't map eager buffers as " - "writable (flags=%lx)\n", vma->vm_flags); - ret = -EPERM; - goto bail; - } - /* - * Don't allow permission to later change to writeable - * with mprotect. - */ - vma->vm_flags &= ~VM_MAYWRITE; - } else { - goto bail; - } - len = vma->vm_end - vma->vm_start; - if (len > size) { - ipath_cdbg(MM, "FAIL: reqlen %lx > %zx\n", len, size); - ret = -EINVAL; - goto bail; - } - - vma->vm_pgoff = (unsigned long) addr >> PAGE_SHIFT; - vma->vm_ops = &ipath_file_vm_ops; - vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; - ret = 1; - -bail: - return ret; -} - -/** - * ipath_mmap - mmap various structures into user space - * @fp: the file pointer - * @vma: the VM area - * - * We use this to have a shared buffer between the kernel and the user code - * for the rcvhdr queue, egr buffers, and the per-port user regs and pio - * buffers in the chip. We have the open and close entries so we can bump - * the ref count and keep the driver from being unloaded while still mapped. - */ -static int ipath_mmap(struct file *fp, struct vm_area_struct *vma) -{ - struct ipath_portdata *pd; - struct ipath_devdata *dd; - u64 pgaddr, ureg; - unsigned piobufs, piocnt; - int ret; - - pd = port_fp(fp); - if (!pd) { - ret = -EINVAL; - goto bail; - } - dd = pd->port_dd; - - /* - * This is the ipath_do_user_init() code, mapping the shared buffers - * into the user process. The address referred to by vm_pgoff is the - * file offset passed via mmap(). For shared ports, this is the - * kernel vmalloc() address of the pages to share with the master. - * For non-shared or master ports, this is a physical address. - * We only do one mmap for each space mapped. - */ - pgaddr = vma->vm_pgoff << PAGE_SHIFT; - - /* - * Check for 0 in case one of the allocations failed, but user - * called mmap anyway. - */ - if (!pgaddr) { - ret = -EINVAL; - goto bail; - } - - ipath_cdbg(MM, "pgaddr %llx vm_start=%lx len %lx port %u:%u:%u\n", - (unsigned long long) pgaddr, vma->vm_start, - vma->vm_end - vma->vm_start, dd->ipath_unit, - pd->port_port, subport_fp(fp)); - - /* - * Physical addresses must fit in 40 bits for our hardware. - * Check for kernel virtual addresses first, anything else must - * match a HW or memory address. - */ - ret = mmap_kvaddr(vma, pgaddr, pd, subport_fp(fp)); - if (ret) { - if (ret > 0) - ret = 0; - goto bail; - } - - ureg = dd->ipath_uregbase + dd->ipath_ureg_align * pd->port_port; - if (!pd->port_subport_cnt) { - /* port is not shared */ - piocnt = pd->port_piocnt; - piobufs = pd->port_piobufs; - } else if (!subport_fp(fp)) { - /* caller is the master */ - piocnt = (pd->port_piocnt / pd->port_subport_cnt) + - (pd->port_piocnt % pd->port_subport_cnt); - piobufs = pd->port_piobufs + - dd->ipath_palign * (pd->port_piocnt - piocnt); - } else { - unsigned slave = subport_fp(fp) - 1; - - /* caller is a slave */ - piocnt = pd->port_piocnt / pd->port_subport_cnt; - piobufs = pd->port_piobufs + dd->ipath_palign * piocnt * slave; - } - - if (pgaddr == ureg) - ret = mmap_ureg(vma, dd, ureg); - else if (pgaddr == piobufs) - ret = mmap_piobufs(vma, dd, pd, piobufs, piocnt); - else if (pgaddr == dd->ipath_pioavailregs_phys) - /* in-memory copy of pioavail registers */ - ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, - (void *) dd->ipath_pioavailregs_dma, - "pioavail registers"); - else if (pgaddr == pd->port_rcvegr_phys) - ret = mmap_rcvegrbufs(vma, pd); - else if (pgaddr == (u64) pd->port_rcvhdrq_phys) - /* - * The rcvhdrq itself; readonly except on HT (so have - * to allow writable mapping), multiple pages, contiguous - * from an i/o perspective. - */ - ret = ipath_mmap_mem(vma, pd, pd->port_rcvhdrq_size, 1, - pd->port_rcvhdrq, - "rcvhdrq"); - else if (pgaddr == (u64) pd->port_rcvhdrqtailaddr_phys) - /* in-memory copy of rcvhdrq tail register */ - ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, - pd->port_rcvhdrtail_kvaddr, - "rcvhdrq tail"); - else - ret = -EINVAL; - - vma->vm_private_data = NULL; - - if (ret < 0) - dev_info(&dd->pcidev->dev, - "Failure %d on off %llx len %lx\n", - -ret, (unsigned long long)pgaddr, - vma->vm_end - vma->vm_start); -bail: - return ret; -} - -static unsigned ipath_poll_hdrqfull(struct ipath_portdata *pd) -{ - unsigned pollflag = 0; - - if ((pd->poll_type & IPATH_POLL_TYPE_OVERFLOW) && - pd->port_hdrqfull != pd->port_hdrqfull_poll) { - pollflag |= POLLIN | POLLRDNORM; - pd->port_hdrqfull_poll = pd->port_hdrqfull; - } - - return pollflag; -} - -static unsigned int ipath_poll_urgent(struct ipath_portdata *pd, - struct file *fp, - struct poll_table_struct *pt) -{ - unsigned pollflag = 0; - struct ipath_devdata *dd; - - dd = pd->port_dd; - - /* variable access in ipath_poll_hdrqfull() needs this */ - rmb(); - pollflag = ipath_poll_hdrqfull(pd); - - if (pd->port_urgent != pd->port_urgent_poll) { - pollflag |= POLLIN | POLLRDNORM; - pd->port_urgent_poll = pd->port_urgent; - } - - if (!pollflag) { - /* this saves a spin_lock/unlock in interrupt handler... */ - set_bit(IPATH_PORT_WAITING_URG, &pd->port_flag); - /* flush waiting flag so don't miss an event... */ - wmb(); - poll_wait(fp, &pd->port_wait, pt); - } - - return pollflag; -} - -static unsigned int ipath_poll_next(struct ipath_portdata *pd, - struct file *fp, - struct poll_table_struct *pt) -{ - u32 head; - u32 tail; - unsigned pollflag = 0; - struct ipath_devdata *dd; - - dd = pd->port_dd; - - /* variable access in ipath_poll_hdrqfull() needs this */ - rmb(); - pollflag = ipath_poll_hdrqfull(pd); - - head = ipath_read_ureg32(dd, ur_rcvhdrhead, pd->port_port); - if (pd->port_rcvhdrtail_kvaddr) - tail = ipath_get_rcvhdrtail(pd); - else - tail = ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); - - if (head != tail) - pollflag |= POLLIN | POLLRDNORM; - else { - /* this saves a spin_lock/unlock in interrupt handler */ - set_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); - /* flush waiting flag so we don't miss an event */ - wmb(); - - set_bit(pd->port_port + dd->ipath_r_intravail_shift, - &dd->ipath_rcvctrl); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - if (dd->ipath_rhdrhead_intr_off) /* arm rcv interrupt */ - ipath_write_ureg(dd, ur_rcvhdrhead, - dd->ipath_rhdrhead_intr_off | head, - pd->port_port); - - poll_wait(fp, &pd->port_wait, pt); - } - - return pollflag; -} - -static unsigned int ipath_poll(struct file *fp, - struct poll_table_struct *pt) -{ - struct ipath_portdata *pd; - unsigned pollflag; - - pd = port_fp(fp); - if (!pd) - pollflag = 0; - else if (pd->poll_type & IPATH_POLL_TYPE_URGENT) - pollflag = ipath_poll_urgent(pd, fp, pt); - else - pollflag = ipath_poll_next(pd, fp, pt); - - return pollflag; -} - -static int ipath_supports_subports(int user_swmajor, int user_swminor) -{ - /* no subport implementation prior to software version 1.3 */ - return (user_swmajor > 1) || (user_swminor >= 3); -} - -static int ipath_compatible_subports(int user_swmajor, int user_swminor) -{ - /* this code is written long-hand for clarity */ - if (IPATH_USER_SWMAJOR != user_swmajor) { - /* no promise of compatibility if major mismatch */ - return 0; - } - if (IPATH_USER_SWMAJOR == 1) { - switch (IPATH_USER_SWMINOR) { - case 0: - case 1: - case 2: - /* no subport implementation so cannot be compatible */ - return 0; - case 3: - /* 3 is only compatible with itself */ - return user_swminor == 3; - default: - /* >= 4 are compatible (or are expected to be) */ - return user_swminor >= 4; - } - } - /* make no promises yet for future major versions */ - return 0; -} - -static int init_subports(struct ipath_devdata *dd, - struct ipath_portdata *pd, - const struct ipath_user_info *uinfo) -{ - int ret = 0; - unsigned num_subports; - size_t size; - - /* - * If the user is requesting zero subports, - * skip the subport allocation. - */ - if (uinfo->spu_subport_cnt <= 0) - goto bail; - - /* Self-consistency check for ipath_compatible_subports() */ - if (ipath_supports_subports(IPATH_USER_SWMAJOR, IPATH_USER_SWMINOR) && - !ipath_compatible_subports(IPATH_USER_SWMAJOR, - IPATH_USER_SWMINOR)) { - dev_info(&dd->pcidev->dev, - "Inconsistent ipath_compatible_subports()\n"); - goto bail; - } - - /* Check for subport compatibility */ - if (!ipath_compatible_subports(uinfo->spu_userversion >> 16, - uinfo->spu_userversion & 0xffff)) { - dev_info(&dd->pcidev->dev, - "Mismatched user version (%d.%d) and driver " - "version (%d.%d) while port sharing. Ensure " - "that driver and library are from the same " - "release.\n", - (int) (uinfo->spu_userversion >> 16), - (int) (uinfo->spu_userversion & 0xffff), - IPATH_USER_SWMAJOR, - IPATH_USER_SWMINOR); - goto bail; - } - if (uinfo->spu_subport_cnt > INFINIPATH_MAX_SUBPORT) { - ret = -EINVAL; - goto bail; - } - - num_subports = uinfo->spu_subport_cnt; - pd->subport_uregbase = vzalloc(PAGE_SIZE * num_subports); - if (!pd->subport_uregbase) { - ret = -ENOMEM; - goto bail; - } - /* Note: pd->port_rcvhdrq_size isn't initialized yet. */ - size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * - sizeof(u32), PAGE_SIZE) * num_subports; - pd->subport_rcvhdr_base = vzalloc(size); - if (!pd->subport_rcvhdr_base) { - ret = -ENOMEM; - goto bail_ureg; - } - - pd->subport_rcvegrbuf = vzalloc(pd->port_rcvegrbuf_chunks * - pd->port_rcvegrbuf_size * - num_subports); - if (!pd->subport_rcvegrbuf) { - ret = -ENOMEM; - goto bail_rhdr; - } - - pd->port_subport_cnt = uinfo->spu_subport_cnt; - pd->port_subport_id = uinfo->spu_subport_id; - pd->active_slaves = 1; - set_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag); - goto bail; - -bail_rhdr: - vfree(pd->subport_rcvhdr_base); -bail_ureg: - vfree(pd->subport_uregbase); - pd->subport_uregbase = NULL; -bail: - return ret; -} - -static int try_alloc_port(struct ipath_devdata *dd, int port, - struct file *fp, - const struct ipath_user_info *uinfo) -{ - struct ipath_portdata *pd; - int ret; - - if (!(pd = dd->ipath_pd[port])) { - void *ptmp; - - pd = kzalloc(sizeof(struct ipath_portdata), GFP_KERNEL); - - /* - * Allocate memory for use in ipath_tid_update() just once - * at open, not per call. Reduces cost of expected send - * setup. - */ - ptmp = kmalloc(dd->ipath_rcvtidcnt * sizeof(u16) + - dd->ipath_rcvtidcnt * sizeof(struct page **), - GFP_KERNEL); - if (!pd || !ptmp) { - ipath_dev_err(dd, "Unable to allocate portdata " - "memory, failing open\n"); - ret = -ENOMEM; - kfree(pd); - kfree(ptmp); - goto bail; - } - dd->ipath_pd[port] = pd; - dd->ipath_pd[port]->port_port = port; - dd->ipath_pd[port]->port_dd = dd; - dd->ipath_pd[port]->port_tid_pg_list = ptmp; - init_waitqueue_head(&dd->ipath_pd[port]->port_wait); - } - if (!pd->port_cnt) { - pd->userversion = uinfo->spu_userversion; - init_user_egr_sizes(pd); - if ((ret = init_subports(dd, pd, uinfo)) != 0) - goto bail; - ipath_cdbg(PROC, "%s[%u] opened unit:port %u:%u\n", - current->comm, current->pid, dd->ipath_unit, - port); - pd->port_cnt = 1; - port_fp(fp) = pd; - pd->port_pid = get_pid(task_pid(current)); - strlcpy(pd->port_comm, current->comm, sizeof(pd->port_comm)); - ipath_stats.sps_ports++; - ret = 0; - } else - ret = -EBUSY; - -bail: - return ret; -} - -static inline int usable(struct ipath_devdata *dd) -{ - return dd && - (dd->ipath_flags & IPATH_PRESENT) && - dd->ipath_kregbase && - dd->ipath_lid && - !(dd->ipath_flags & (IPATH_LINKDOWN | IPATH_DISABLED - | IPATH_LINKUNK)); -} - -static int find_free_port(int unit, struct file *fp, - const struct ipath_user_info *uinfo) -{ - struct ipath_devdata *dd = ipath_lookup(unit); - int ret, i; - - if (!dd) { - ret = -ENODEV; - goto bail; - } - - if (!usable(dd)) { - ret = -ENETDOWN; - goto bail; - } - - for (i = 1; i < dd->ipath_cfgports; i++) { - ret = try_alloc_port(dd, i, fp, uinfo); - if (ret != -EBUSY) - goto bail; - } - ret = -EBUSY; - -bail: - return ret; -} - -static int find_best_unit(struct file *fp, - const struct ipath_user_info *uinfo) -{ - int ret = 0, i, prefunit = -1, devmax; - int maxofallports, npresent, nup; - int ndev; - - devmax = ipath_count_units(&npresent, &nup, &maxofallports); - - /* - * This code is present to allow a knowledgeable person to - * specify the layout of processes to processors before opening - * this driver, and then we'll assign the process to the "closest" - * InfiniPath chip to that processor (we assume reasonable connectivity, - * for now). This code assumes that if affinity has been set - * before this point, that at most one cpu is set; for now this - * is reasonable. I check for both cpumask_empty() and cpumask_full(), - * in case some kernel variant sets none of the bits when no - * affinity is set. 2.6.11 and 12 kernels have all present - * cpus set. Some day we'll have to fix it up further to handle - * a cpu subset. This algorithm fails for two HT chips connected - * in tunnel fashion. Eventually this needs real topology - * information. There may be some issues with dual core numbering - * as well. This needs more work prior to release. - */ - if (!cpumask_empty(tsk_cpus_allowed(current)) && - !cpumask_full(tsk_cpus_allowed(current))) { - int ncpus = num_online_cpus(), curcpu = -1, nset = 0; - get_online_cpus(); - for_each_online_cpu(i) - if (cpumask_test_cpu(i, tsk_cpus_allowed(current))) { - ipath_cdbg(PROC, "%s[%u] affinity set for " - "cpu %d/%d\n", current->comm, - current->pid, i, ncpus); - curcpu = i; - nset++; - } - put_online_cpus(); - if (curcpu != -1 && nset != ncpus) { - if (npresent) { - prefunit = curcpu / (ncpus / npresent); - ipath_cdbg(PROC,"%s[%u] %d chips, %d cpus, " - "%d cpus/chip, select unit %d\n", - current->comm, current->pid, - npresent, ncpus, ncpus / npresent, - prefunit); - } - } - } - - /* - * user ports start at 1, kernel port is 0 - * For now, we do round-robin access across all chips - */ - - if (prefunit != -1) - devmax = prefunit + 1; -recheck: - for (i = 1; i < maxofallports; i++) { - for (ndev = prefunit != -1 ? prefunit : 0; ndev < devmax; - ndev++) { - struct ipath_devdata *dd = ipath_lookup(ndev); - - if (!usable(dd)) - continue; /* can't use this unit */ - if (i >= dd->ipath_cfgports) - /* - * Maxed out on users of this unit. Try - * next. - */ - continue; - ret = try_alloc_port(dd, i, fp, uinfo); - if (!ret) - goto done; - } - } - - if (npresent) { - if (nup == 0) { - ret = -ENETDOWN; - ipath_dbg("No ports available (none initialized " - "and ready)\n"); - } else { - if (prefunit > 0) { - /* if started above 0, retry from 0 */ - ipath_cdbg(PROC, - "%s[%u] no ports on prefunit " - "%d, clear and re-check\n", - current->comm, current->pid, - prefunit); - devmax = ipath_count_units(NULL, NULL, - NULL); - prefunit = -1; - goto recheck; - } - ret = -EBUSY; - ipath_dbg("No ports available\n"); - } - } else { - ret = -ENXIO; - ipath_dbg("No boards found\n"); - } - -done: - return ret; -} - -static int find_shared_port(struct file *fp, - const struct ipath_user_info *uinfo) -{ - int devmax, ndev, i; - int ret = 0; - - devmax = ipath_count_units(NULL, NULL, NULL); - - for (ndev = 0; ndev < devmax; ndev++) { - struct ipath_devdata *dd = ipath_lookup(ndev); - - if (!usable(dd)) - continue; - for (i = 1; i < dd->ipath_cfgports; i++) { - struct ipath_portdata *pd = dd->ipath_pd[i]; - - /* Skip ports which are not yet open */ - if (!pd || !pd->port_cnt) - continue; - /* Skip port if it doesn't match the requested one */ - if (pd->port_subport_id != uinfo->spu_subport_id) - continue; - /* Verify the sharing process matches the master */ - if (pd->port_subport_cnt != uinfo->spu_subport_cnt || - pd->userversion != uinfo->spu_userversion || - pd->port_cnt >= pd->port_subport_cnt) { - ret = -EINVAL; - goto done; - } - port_fp(fp) = pd; - subport_fp(fp) = pd->port_cnt++; - pd->port_subpid[subport_fp(fp)] = - get_pid(task_pid(current)); - tidcursor_fp(fp) = 0; - pd->active_slaves |= 1 << subport_fp(fp); - ipath_cdbg(PROC, - "%s[%u] %u sharing %s[%u] unit:port %u:%u\n", - current->comm, current->pid, - subport_fp(fp), - pd->port_comm, pid_nr(pd->port_pid), - dd->ipath_unit, pd->port_port); - ret = 1; - goto done; - } - } - -done: - return ret; -} - -static int ipath_open(struct inode *in, struct file *fp) -{ - /* The real work is performed later in ipath_assign_port() */ - fp->private_data = kzalloc(sizeof(struct ipath_filedata), GFP_KERNEL); - return fp->private_data ? 0 : -ENOMEM; -} - -/* Get port early, so can set affinity prior to memory allocation */ -static int ipath_assign_port(struct file *fp, - const struct ipath_user_info *uinfo) -{ - int ret; - int i_minor; - unsigned swmajor, swminor; - - /* Check to be sure we haven't already initialized this file */ - if (port_fp(fp)) { - ret = -EINVAL; - goto done; - } - - /* for now, if major version is different, bail */ - swmajor = uinfo->spu_userversion >> 16; - if (swmajor != IPATH_USER_SWMAJOR) { - ipath_dbg("User major version %d not same as driver " - "major %d\n", uinfo->spu_userversion >> 16, - IPATH_USER_SWMAJOR); - ret = -ENODEV; - goto done; - } - - swminor = uinfo->spu_userversion & 0xffff; - if (swminor != IPATH_USER_SWMINOR) - ipath_dbg("User minor version %d not same as driver " - "minor %d\n", swminor, IPATH_USER_SWMINOR); - - mutex_lock(&ipath_mutex); - - if (ipath_compatible_subports(swmajor, swminor) && - uinfo->spu_subport_cnt && - (ret = find_shared_port(fp, uinfo))) { - if (ret > 0) - ret = 0; - goto done_chk_sdma; - } - - i_minor = iminor(file_inode(fp)) - IPATH_USER_MINOR_BASE; - ipath_cdbg(VERBOSE, "open on dev %lx (minor %d)\n", - (long)file_inode(fp)->i_rdev, i_minor); - - if (i_minor) - ret = find_free_port(i_minor - 1, fp, uinfo); - else - ret = find_best_unit(fp, uinfo); - -done_chk_sdma: - if (!ret) { - struct ipath_filedata *fd = fp->private_data; - const struct ipath_portdata *pd = fd->pd; - const struct ipath_devdata *dd = pd->port_dd; - - fd->pq = ipath_user_sdma_queue_create(&dd->pcidev->dev, - dd->ipath_unit, - pd->port_port, - fd->subport); - - if (!fd->pq) - ret = -ENOMEM; - } - - mutex_unlock(&ipath_mutex); - -done: - return ret; -} - - -static int ipath_do_user_init(struct file *fp, - const struct ipath_user_info *uinfo) -{ - int ret; - struct ipath_portdata *pd = port_fp(fp); - struct ipath_devdata *dd; - u32 head32; - - /* Subports don't need to initialize anything since master did it. */ - if (subport_fp(fp)) { - ret = wait_event_interruptible(pd->port_wait, - !test_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag)); - goto done; - } - - dd = pd->port_dd; - - if (uinfo->spu_rcvhdrsize) { - ret = ipath_setrcvhdrsize(dd, uinfo->spu_rcvhdrsize); - if (ret) - goto done; - } - - /* for now we do nothing with rcvhdrcnt: uinfo->spu_rcvhdrcnt */ - - /* some ports may get extra buffers, calculate that here */ - if (pd->port_port <= dd->ipath_ports_extrabuf) - pd->port_piocnt = dd->ipath_pbufsport + 1; - else - pd->port_piocnt = dd->ipath_pbufsport; - - /* for right now, kernel piobufs are at end, so port 1 is at 0 */ - if (pd->port_port <= dd->ipath_ports_extrabuf) - pd->port_pio_base = (dd->ipath_pbufsport + 1) - * (pd->port_port - 1); - else - pd->port_pio_base = dd->ipath_ports_extrabuf + - dd->ipath_pbufsport * (pd->port_port - 1); - pd->port_piobufs = dd->ipath_piobufbase + - pd->port_pio_base * dd->ipath_palign; - ipath_cdbg(VERBOSE, "piobuf base for port %u is 0x%x, piocnt %u," - " first pio %u\n", pd->port_port, pd->port_piobufs, - pd->port_piocnt, pd->port_pio_base); - ipath_chg_pioavailkernel(dd, pd->port_pio_base, pd->port_piocnt, 0); - - /* - * Now allocate the rcvhdr Q and eager TIDs; skip the TID - * array for time being. If pd->port_port > chip-supported, - * we need to do extra stuff here to handle by handling overflow - * through port 0, someday - */ - ret = ipath_create_rcvhdrq(dd, pd); - if (!ret) - ret = ipath_create_user_egr(pd); - if (ret) - goto done; - - /* - * set the eager head register for this port to the current values - * of the tail pointers, since we don't know if they were - * updated on last use of the port. - */ - head32 = ipath_read_ureg32(dd, ur_rcvegrindextail, pd->port_port); - ipath_write_ureg(dd, ur_rcvegrindexhead, head32, pd->port_port); - pd->port_lastrcvhdrqtail = -1; - ipath_cdbg(VERBOSE, "Wrote port%d egrhead %x from tail regs\n", - pd->port_port, head32); - pd->port_tidcursor = 0; /* start at beginning after open */ - - /* initialize poll variables... */ - pd->port_urgent = 0; - pd->port_urgent_poll = 0; - pd->port_hdrqfull_poll = pd->port_hdrqfull; - - /* - * Now enable the port for receive. - * For chips that are set to DMA the tail register to memory - * when they change (and when the update bit transitions from - * 0 to 1. So for those chips, we turn it off and then back on. - * This will (very briefly) affect any other open ports, but the - * duration is very short, and therefore isn't an issue. We - * explicitly set the in-memory tail copy to 0 beforehand, so we - * don't have to wait to be sure the DMA update has happened - * (chip resets head/tail to 0 on transition to enable). - */ - set_bit(dd->ipath_r_portenable_shift + pd->port_port, - &dd->ipath_rcvctrl); - if (!(dd->ipath_flags & IPATH_NODMA_RTAIL)) { - if (pd->port_rcvhdrtail_kvaddr) - ipath_clear_rcvhdrtail(pd); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl & - ~(1ULL << dd->ipath_r_tailupd_shift)); - } - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - /* Notify any waiting slaves */ - if (pd->port_subport_cnt) { - clear_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag); - wake_up(&pd->port_wait); - } -done: - return ret; -} - -/** - * unlock_exptid - unlock any expected TID entries port still had in use - * @pd: port - * - * We don't actually update the chip here, because we do a bulk update - * below, using ipath_f_clear_tids. - */ -static void unlock_expected_tids(struct ipath_portdata *pd) -{ - struct ipath_devdata *dd = pd->port_dd; - int port_tidbase = pd->port_port * dd->ipath_rcvtidcnt; - int i, cnt = 0, maxtid = port_tidbase + dd->ipath_rcvtidcnt; - - ipath_cdbg(VERBOSE, "Port %u unlocking any locked expTID pages\n", - pd->port_port); - for (i = port_tidbase; i < maxtid; i++) { - struct page *ps = dd->ipath_pageshadow[i]; - - if (!ps) - continue; - - dd->ipath_pageshadow[i] = NULL; - pci_unmap_page(dd->pcidev, dd->ipath_physshadow[i], - PAGE_SIZE, PCI_DMA_FROMDEVICE); - ipath_release_user_pages_on_close(&ps, 1); - cnt++; - ipath_stats.sps_pageunlocks++; - } - if (cnt) - ipath_cdbg(VERBOSE, "Port %u locked %u expTID entries\n", - pd->port_port, cnt); - - if (ipath_stats.sps_pagelocks || ipath_stats.sps_pageunlocks) - ipath_cdbg(VERBOSE, "%llu pages locked, %llu unlocked\n", - (unsigned long long) ipath_stats.sps_pagelocks, - (unsigned long long) - ipath_stats.sps_pageunlocks); -} - -static int ipath_close(struct inode *in, struct file *fp) -{ - struct ipath_filedata *fd; - struct ipath_portdata *pd; - struct ipath_devdata *dd; - unsigned long flags; - unsigned port; - struct pid *pid; - - ipath_cdbg(VERBOSE, "close on dev %lx, private data %p\n", - (long)in->i_rdev, fp->private_data); - - mutex_lock(&ipath_mutex); - - fd = fp->private_data; - fp->private_data = NULL; - pd = fd->pd; - if (!pd) { - mutex_unlock(&ipath_mutex); - goto bail; - } - - dd = pd->port_dd; - - /* drain user sdma queue */ - ipath_user_sdma_queue_drain(dd, fd->pq); - ipath_user_sdma_queue_destroy(fd->pq); - - if (--pd->port_cnt) { - /* - * XXX If the master closes the port before the slave(s), - * revoke the mmap for the eager receive queue so - * the slave(s) don't wait for receive data forever. - */ - pd->active_slaves &= ~(1 << fd->subport); - put_pid(pd->port_subpid[fd->subport]); - pd->port_subpid[fd->subport] = NULL; - mutex_unlock(&ipath_mutex); - goto bail; - } - /* early; no interrupt users after this */ - spin_lock_irqsave(&dd->ipath_uctxt_lock, flags); - port = pd->port_port; - dd->ipath_pd[port] = NULL; - pid = pd->port_pid; - pd->port_pid = NULL; - spin_unlock_irqrestore(&dd->ipath_uctxt_lock, flags); - - if (pd->port_rcvwait_to || pd->port_piowait_to - || pd->port_rcvnowait || pd->port_pionowait) { - ipath_cdbg(VERBOSE, "port%u, %u rcv, %u pio wait timeo; " - "%u rcv %u, pio already\n", - pd->port_port, pd->port_rcvwait_to, - pd->port_piowait_to, pd->port_rcvnowait, - pd->port_pionowait); - pd->port_rcvwait_to = pd->port_piowait_to = - pd->port_rcvnowait = pd->port_pionowait = 0; - } - if (pd->port_flag) { - ipath_cdbg(PROC, "port %u port_flag set: 0x%lx\n", - pd->port_port, pd->port_flag); - pd->port_flag = 0; - } - - if (dd->ipath_kregbase) { - /* atomically clear receive enable port and intr avail. */ - clear_bit(dd->ipath_r_portenable_shift + port, - &dd->ipath_rcvctrl); - clear_bit(pd->port_port + dd->ipath_r_intravail_shift, - &dd->ipath_rcvctrl); - ipath_write_kreg( dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - /* and read back from chip to be sure that nothing - * else is in flight when we do the rest */ - (void)ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - - /* clean up the pkeys for this port user */ - ipath_clean_part_key(pd, dd); - /* - * be paranoid, and never write 0's to these, just use an - * unused part of the port 0 tail page. Of course, - * rcvhdraddr points to a large chunk of memory, so this - * could still trash things, but at least it won't trash - * page 0, and by disabling the port, it should stop "soon", - * even if a packet or two is in already in flight after we - * disabled the port. - */ - ipath_write_kreg_port(dd, - dd->ipath_kregs->kr_rcvhdrtailaddr, port, - dd->ipath_dummy_hdrq_phys); - ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, - pd->port_port, dd->ipath_dummy_hdrq_phys); - - ipath_disarm_piobufs(dd, pd->port_pio_base, pd->port_piocnt); - ipath_chg_pioavailkernel(dd, pd->port_pio_base, - pd->port_piocnt, 1); - - dd->ipath_f_clear_tids(dd, pd->port_port); - - if (dd->ipath_pageshadow) - unlock_expected_tids(pd); - ipath_stats.sps_ports--; - ipath_cdbg(PROC, "%s[%u] closed port %u:%u\n", - pd->port_comm, pid_nr(pid), - dd->ipath_unit, port); - } - - put_pid(pid); - mutex_unlock(&ipath_mutex); - ipath_free_pddata(dd, pd); /* after releasing the mutex */ - -bail: - kfree(fd); - return 0; -} - -static int ipath_port_info(struct ipath_portdata *pd, u16 subport, - struct ipath_port_info __user *uinfo) -{ - struct ipath_port_info info; - int nup; - int ret; - size_t sz; - - (void) ipath_count_units(NULL, &nup, NULL); - info.num_active = nup; - info.unit = pd->port_dd->ipath_unit; - info.port = pd->port_port; - info.subport = subport; - /* Don't return new fields if old library opened the port. */ - if (ipath_supports_subports(pd->userversion >> 16, - pd->userversion & 0xffff)) { - /* Number of user ports available for this device. */ - info.num_ports = pd->port_dd->ipath_cfgports - 1; - info.num_subports = pd->port_subport_cnt; - sz = sizeof(info); - } else - sz = sizeof(info) - 2 * sizeof(u16); - - if (copy_to_user(uinfo, &info, sz)) { - ret = -EFAULT; - goto bail; - } - ret = 0; - -bail: - return ret; -} - -static int ipath_get_slave_info(struct ipath_portdata *pd, - void __user *slave_mask_addr) -{ - int ret = 0; - - if (copy_to_user(slave_mask_addr, &pd->active_slaves, sizeof(u32))) - ret = -EFAULT; - return ret; -} - -static int ipath_sdma_get_inflight(struct ipath_user_sdma_queue *pq, - u32 __user *inflightp) -{ - const u32 val = ipath_user_sdma_inflight_counter(pq); - - if (put_user(val, inflightp)) - return -EFAULT; - - return 0; -} - -static int ipath_sdma_get_complete(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - u32 __user *completep) -{ - u32 val; - int err; - - err = ipath_user_sdma_make_progress(dd, pq); - if (err < 0) - return err; - - val = ipath_user_sdma_complete_counter(pq); - if (put_user(val, completep)) - return -EFAULT; - - return 0; -} - -static ssize_t ipath_write(struct file *fp, const char __user *data, - size_t count, loff_t *off) -{ - const struct ipath_cmd __user *ucmd; - struct ipath_portdata *pd; - const void __user *src; - size_t consumed, copy; - struct ipath_cmd cmd; - ssize_t ret = 0; - void *dest; - - if (count < sizeof(cmd.type)) { - ret = -EINVAL; - goto bail; - } - - ucmd = (const struct ipath_cmd __user *) data; - - if (copy_from_user(&cmd.type, &ucmd->type, sizeof(cmd.type))) { - ret = -EFAULT; - goto bail; - } - - consumed = sizeof(cmd.type); - - switch (cmd.type) { - case IPATH_CMD_ASSIGN_PORT: - case __IPATH_CMD_USER_INIT: - case IPATH_CMD_USER_INIT: - copy = sizeof(cmd.cmd.user_info); - dest = &cmd.cmd.user_info; - src = &ucmd->cmd.user_info; - break; - case IPATH_CMD_RECV_CTRL: - copy = sizeof(cmd.cmd.recv_ctrl); - dest = &cmd.cmd.recv_ctrl; - src = &ucmd->cmd.recv_ctrl; - break; - case IPATH_CMD_PORT_INFO: - copy = sizeof(cmd.cmd.port_info); - dest = &cmd.cmd.port_info; - src = &ucmd->cmd.port_info; - break; - case IPATH_CMD_TID_UPDATE: - case IPATH_CMD_TID_FREE: - copy = sizeof(cmd.cmd.tid_info); - dest = &cmd.cmd.tid_info; - src = &ucmd->cmd.tid_info; - break; - case IPATH_CMD_SET_PART_KEY: - copy = sizeof(cmd.cmd.part_key); - dest = &cmd.cmd.part_key; - src = &ucmd->cmd.part_key; - break; - case __IPATH_CMD_SLAVE_INFO: - copy = sizeof(cmd.cmd.slave_mask_addr); - dest = &cmd.cmd.slave_mask_addr; - src = &ucmd->cmd.slave_mask_addr; - break; - case IPATH_CMD_PIOAVAILUPD: // force an update of PIOAvail reg - copy = 0; - src = NULL; - dest = NULL; - break; - case IPATH_CMD_POLL_TYPE: - copy = sizeof(cmd.cmd.poll_type); - dest = &cmd.cmd.poll_type; - src = &ucmd->cmd.poll_type; - break; - case IPATH_CMD_ARMLAUNCH_CTRL: - copy = sizeof(cmd.cmd.armlaunch_ctrl); - dest = &cmd.cmd.armlaunch_ctrl; - src = &ucmd->cmd.armlaunch_ctrl; - break; - case IPATH_CMD_SDMA_INFLIGHT: - copy = sizeof(cmd.cmd.sdma_inflight); - dest = &cmd.cmd.sdma_inflight; - src = &ucmd->cmd.sdma_inflight; - break; - case IPATH_CMD_SDMA_COMPLETE: - copy = sizeof(cmd.cmd.sdma_complete); - dest = &cmd.cmd.sdma_complete; - src = &ucmd->cmd.sdma_complete; - break; - default: - ret = -EINVAL; - goto bail; - } - - if (copy) { - if ((count - consumed) < copy) { - ret = -EINVAL; - goto bail; - } - - if (copy_from_user(dest, src, copy)) { - ret = -EFAULT; - goto bail; - } - - consumed += copy; - } - - pd = port_fp(fp); - if (!pd && cmd.type != __IPATH_CMD_USER_INIT && - cmd.type != IPATH_CMD_ASSIGN_PORT) { - ret = -EINVAL; - goto bail; - } - - switch (cmd.type) { - case IPATH_CMD_ASSIGN_PORT: - ret = ipath_assign_port(fp, &cmd.cmd.user_info); - if (ret) - goto bail; - break; - case __IPATH_CMD_USER_INIT: - /* backwards compatibility, get port first */ - ret = ipath_assign_port(fp, &cmd.cmd.user_info); - if (ret) - goto bail; - /* and fall through to current version. */ - case IPATH_CMD_USER_INIT: - ret = ipath_do_user_init(fp, &cmd.cmd.user_info); - if (ret) - goto bail; - ret = ipath_get_base_info( - fp, (void __user *) (unsigned long) - cmd.cmd.user_info.spu_base_info, - cmd.cmd.user_info.spu_base_info_size); - break; - case IPATH_CMD_RECV_CTRL: - ret = ipath_manage_rcvq(pd, subport_fp(fp), cmd.cmd.recv_ctrl); - break; - case IPATH_CMD_PORT_INFO: - ret = ipath_port_info(pd, subport_fp(fp), - (struct ipath_port_info __user *) - (unsigned long) cmd.cmd.port_info); - break; - case IPATH_CMD_TID_UPDATE: - ret = ipath_tid_update(pd, fp, &cmd.cmd.tid_info); - break; - case IPATH_CMD_TID_FREE: - ret = ipath_tid_free(pd, subport_fp(fp), &cmd.cmd.tid_info); - break; - case IPATH_CMD_SET_PART_KEY: - ret = ipath_set_part_key(pd, cmd.cmd.part_key); - break; - case __IPATH_CMD_SLAVE_INFO: - ret = ipath_get_slave_info(pd, - (void __user *) (unsigned long) - cmd.cmd.slave_mask_addr); - break; - case IPATH_CMD_PIOAVAILUPD: - ipath_force_pio_avail_update(pd->port_dd); - break; - case IPATH_CMD_POLL_TYPE: - pd->poll_type = cmd.cmd.poll_type; - break; - case IPATH_CMD_ARMLAUNCH_CTRL: - if (cmd.cmd.armlaunch_ctrl) - ipath_enable_armlaunch(pd->port_dd); - else - ipath_disable_armlaunch(pd->port_dd); - break; - case IPATH_CMD_SDMA_INFLIGHT: - ret = ipath_sdma_get_inflight(user_sdma_queue_fp(fp), - (u32 __user *) (unsigned long) - cmd.cmd.sdma_inflight); - break; - case IPATH_CMD_SDMA_COMPLETE: - ret = ipath_sdma_get_complete(pd->port_dd, - user_sdma_queue_fp(fp), - (u32 __user *) (unsigned long) - cmd.cmd.sdma_complete); - break; - } - - if (ret >= 0) - ret = consumed; - -bail: - return ret; -} - -static ssize_t ipath_write_iter(struct kiocb *iocb, struct iov_iter *from) -{ - struct file *filp = iocb->ki_filp; - struct ipath_filedata *fp = filp->private_data; - struct ipath_portdata *pd = port_fp(filp); - struct ipath_user_sdma_queue *pq = fp->pq; - - if (!iter_is_iovec(from) || !from->nr_segs) - return -EINVAL; - - return ipath_user_sdma_writev(pd->port_dd, pq, from->iov, from->nr_segs); -} - -static struct class *ipath_class; - -static int init_cdev(int minor, char *name, const struct file_operations *fops, - struct cdev **cdevp, struct device **devp) -{ - const dev_t dev = MKDEV(IPATH_MAJOR, minor); - struct cdev *cdev = NULL; - struct device *device = NULL; - int ret; - - cdev = cdev_alloc(); - if (!cdev) { - printk(KERN_ERR IPATH_DRV_NAME - ": Could not allocate cdev for minor %d, %s\n", - minor, name); - ret = -ENOMEM; - goto done; - } - - cdev->owner = THIS_MODULE; - cdev->ops = fops; - kobject_set_name(&cdev->kobj, name); - - ret = cdev_add(cdev, dev, 1); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME - ": Could not add cdev for minor %d, %s (err %d)\n", - minor, name, -ret); - goto err_cdev; - } - - device = device_create(ipath_class, NULL, dev, NULL, name); - - if (IS_ERR(device)) { - ret = PTR_ERR(device); - printk(KERN_ERR IPATH_DRV_NAME ": Could not create " - "device for minor %d, %s (err %d)\n", - minor, name, -ret); - goto err_cdev; - } - - goto done; - -err_cdev: - cdev_del(cdev); - cdev = NULL; - -done: - if (ret >= 0) { - *cdevp = cdev; - *devp = device; - } else { - *cdevp = NULL; - *devp = NULL; - } - - return ret; -} - -int ipath_cdev_init(int minor, char *name, const struct file_operations *fops, - struct cdev **cdevp, struct device **devp) -{ - return init_cdev(minor, name, fops, cdevp, devp); -} - -static void cleanup_cdev(struct cdev **cdevp, - struct device **devp) -{ - struct device *dev = *devp; - - if (dev) { - device_unregister(dev); - *devp = NULL; - } - - if (*cdevp) { - cdev_del(*cdevp); - *cdevp = NULL; - } -} - -void ipath_cdev_cleanup(struct cdev **cdevp, - struct device **devp) -{ - cleanup_cdev(cdevp, devp); -} - -static struct cdev *wildcard_cdev; -static struct device *wildcard_dev; - -static const dev_t dev = MKDEV(IPATH_MAJOR, 0); - -static int user_init(void) -{ - int ret; - - ret = register_chrdev_region(dev, IPATH_NMINORS, IPATH_DRV_NAME); - if (ret < 0) { - printk(KERN_ERR IPATH_DRV_NAME ": Could not register " - "chrdev region (err %d)\n", -ret); - goto done; - } - - ipath_class = class_create(THIS_MODULE, IPATH_DRV_NAME); - - if (IS_ERR(ipath_class)) { - ret = PTR_ERR(ipath_class); - printk(KERN_ERR IPATH_DRV_NAME ": Could not create " - "device class (err %d)\n", -ret); - goto bail; - } - - goto done; -bail: - unregister_chrdev_region(dev, IPATH_NMINORS); -done: - return ret; -} - -static void user_cleanup(void) -{ - if (ipath_class) { - class_destroy(ipath_class); - ipath_class = NULL; - } - - unregister_chrdev_region(dev, IPATH_NMINORS); -} - -static atomic_t user_count = ATOMIC_INIT(0); -static atomic_t user_setup = ATOMIC_INIT(0); - -int ipath_user_add(struct ipath_devdata *dd) -{ - char name[10]; - int ret; - - if (atomic_inc_return(&user_count) == 1) { - ret = user_init(); - if (ret < 0) { - ipath_dev_err(dd, "Unable to set up user support: " - "error %d\n", -ret); - goto bail; - } - ret = init_cdev(0, "ipath", &ipath_file_ops, &wildcard_cdev, - &wildcard_dev); - if (ret < 0) { - ipath_dev_err(dd, "Could not create wildcard " - "minor: error %d\n", -ret); - goto bail_user; - } - - atomic_set(&user_setup, 1); - } - - snprintf(name, sizeof(name), "ipath%d", dd->ipath_unit); - - ret = init_cdev(dd->ipath_unit + 1, name, &ipath_file_ops, - &dd->user_cdev, &dd->user_dev); - if (ret < 0) - ipath_dev_err(dd, "Could not create user minor %d, %s\n", - dd->ipath_unit + 1, name); - - goto bail; - -bail_user: - user_cleanup(); -bail: - return ret; -} - -void ipath_user_remove(struct ipath_devdata *dd) -{ - cleanup_cdev(&dd->user_cdev, &dd->user_dev); - - if (atomic_dec_return(&user_count) == 0) { - if (atomic_read(&user_setup) == 0) - goto bail; - - cleanup_cdev(&wildcard_cdev, &wildcard_dev); - user_cleanup(); - - atomic_set(&user_setup, 0); - } -bail: - return; -} diff --git a/drivers/staging/rdma/ipath/ipath_fs.c b/drivers/staging/rdma/ipath/ipath_fs.c deleted file mode 100644 index 476fcdf05acb..000000000000 --- a/drivers/staging/rdma/ipath/ipath_fs.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" - -#define IPATHFS_MAGIC 0x726a77 - -static struct super_block *ipath_super; - -static int ipathfs_mknod(struct inode *dir, struct dentry *dentry, - umode_t mode, const struct file_operations *fops, - void *data) -{ - int error; - struct inode *inode = new_inode(dir->i_sb); - - if (!inode) { - error = -EPERM; - goto bail; - } - - inode->i_ino = get_next_ino(); - inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; - inode->i_private = data; - if (S_ISDIR(mode)) { - inode->i_op = &simple_dir_inode_operations; - inc_nlink(inode); - inc_nlink(dir); - } - - inode->i_fop = fops; - - d_instantiate(dentry, inode); - error = 0; - -bail: - return error; -} - -static int create_file(const char *name, umode_t mode, - struct dentry *parent, struct dentry **dentry, - const struct file_operations *fops, void *data) -{ - int error; - - inode_lock(d_inode(parent)); - *dentry = lookup_one_len(name, parent, strlen(name)); - if (!IS_ERR(*dentry)) - error = ipathfs_mknod(d_inode(parent), *dentry, - mode, fops, data); - else - error = PTR_ERR(*dentry); - inode_unlock(d_inode(parent)); - - return error; -} - -static ssize_t atomic_stats_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - return simple_read_from_buffer(buf, count, ppos, &ipath_stats, - sizeof ipath_stats); -} - -static const struct file_operations atomic_stats_ops = { - .read = atomic_stats_read, - .llseek = default_llseek, -}; - -static ssize_t atomic_counters_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct infinipath_counters counters; - struct ipath_devdata *dd; - - dd = file_inode(file)->i_private; - dd->ipath_f_read_counters(dd, &counters); - - return simple_read_from_buffer(buf, count, ppos, &counters, - sizeof counters); -} - -static const struct file_operations atomic_counters_ops = { - .read = atomic_counters_read, - .llseek = default_llseek, -}; - -static ssize_t flash_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct ipath_devdata *dd; - ssize_t ret; - loff_t pos; - char *tmp; - - pos = *ppos; - - if ( pos < 0) { - ret = -EINVAL; - goto bail; - } - - if (pos >= sizeof(struct ipath_flash)) { - ret = 0; - goto bail; - } - - if (count > sizeof(struct ipath_flash) - pos) - count = sizeof(struct ipath_flash) - pos; - - tmp = kmalloc(count, GFP_KERNEL); - if (!tmp) { - ret = -ENOMEM; - goto bail; - } - - dd = file_inode(file)->i_private; - if (ipath_eeprom_read(dd, pos, tmp, count)) { - ipath_dev_err(dd, "failed to read from flash\n"); - ret = -ENXIO; - goto bail_tmp; - } - - if (copy_to_user(buf, tmp, count)) { - ret = -EFAULT; - goto bail_tmp; - } - - *ppos = pos + count; - ret = count; - -bail_tmp: - kfree(tmp); - -bail: - return ret; -} - -static ssize_t flash_write(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct ipath_devdata *dd; - ssize_t ret; - loff_t pos; - char *tmp; - - pos = *ppos; - - if (pos != 0) { - ret = -EINVAL; - goto bail; - } - - if (count != sizeof(struct ipath_flash)) { - ret = -EINVAL; - goto bail; - } - - tmp = memdup_user(buf, count); - if (IS_ERR(tmp)) - return PTR_ERR(tmp); - - dd = file_inode(file)->i_private; - if (ipath_eeprom_write(dd, pos, tmp, count)) { - ret = -ENXIO; - ipath_dev_err(dd, "failed to write to flash\n"); - goto bail_tmp; - } - - *ppos = pos + count; - ret = count; - -bail_tmp: - kfree(tmp); - -bail: - return ret; -} - -static const struct file_operations flash_ops = { - .read = flash_read, - .write = flash_write, - .llseek = default_llseek, -}; - -static int create_device_files(struct super_block *sb, - struct ipath_devdata *dd) -{ - struct dentry *dir, *tmp; - char unit[10]; - int ret; - - snprintf(unit, sizeof unit, "%02d", dd->ipath_unit); - ret = create_file(unit, S_IFDIR|S_IRUGO|S_IXUGO, sb->s_root, &dir, - &simple_dir_operations, dd); - if (ret) { - printk(KERN_ERR "create_file(%s) failed: %d\n", unit, ret); - goto bail; - } - - ret = create_file("atomic_counters", S_IFREG|S_IRUGO, dir, &tmp, - &atomic_counters_ops, dd); - if (ret) { - printk(KERN_ERR "create_file(%s/atomic_counters) " - "failed: %d\n", unit, ret); - goto bail; - } - - ret = create_file("flash", S_IFREG|S_IWUSR|S_IRUGO, dir, &tmp, - &flash_ops, dd); - if (ret) { - printk(KERN_ERR "create_file(%s/flash) " - "failed: %d\n", unit, ret); - goto bail; - } - -bail: - return ret; -} - -static int remove_file(struct dentry *parent, char *name) -{ - struct dentry *tmp; - int ret; - - tmp = lookup_one_len(name, parent, strlen(name)); - - if (IS_ERR(tmp)) { - ret = PTR_ERR(tmp); - goto bail; - } - - spin_lock(&tmp->d_lock); - if (simple_positive(tmp)) { - dget_dlock(tmp); - __d_drop(tmp); - spin_unlock(&tmp->d_lock); - simple_unlink(d_inode(parent), tmp); - } else - spin_unlock(&tmp->d_lock); - - ret = 0; -bail: - /* - * We don't expect clients to care about the return value, but - * it's there if they need it. - */ - return ret; -} - -static int remove_device_files(struct super_block *sb, - struct ipath_devdata *dd) -{ - struct dentry *dir, *root; - char unit[10]; - int ret; - - root = dget(sb->s_root); - inode_lock(d_inode(root)); - snprintf(unit, sizeof unit, "%02d", dd->ipath_unit); - dir = lookup_one_len(unit, root, strlen(unit)); - - if (IS_ERR(dir)) { - ret = PTR_ERR(dir); - printk(KERN_ERR "Lookup of %s failed\n", unit); - goto bail; - } - - remove_file(dir, "flash"); - remove_file(dir, "atomic_counters"); - d_delete(dir); - ret = simple_rmdir(d_inode(root), dir); - -bail: - inode_unlock(d_inode(root)); - dput(root); - return ret; -} - -static int ipathfs_fill_super(struct super_block *sb, void *data, - int silent) -{ - struct ipath_devdata *dd, *tmp; - unsigned long flags; - int ret; - - static struct tree_descr files[] = { - [2] = {"atomic_stats", &atomic_stats_ops, S_IRUGO}, - {""}, - }; - - ret = simple_fill_super(sb, IPATHFS_MAGIC, files); - if (ret) { - printk(KERN_ERR "simple_fill_super failed: %d\n", ret); - goto bail; - } - - spin_lock_irqsave(&ipath_devs_lock, flags); - - list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) { - spin_unlock_irqrestore(&ipath_devs_lock, flags); - ret = create_device_files(sb, dd); - if (ret) - goto bail; - spin_lock_irqsave(&ipath_devs_lock, flags); - } - - spin_unlock_irqrestore(&ipath_devs_lock, flags); - -bail: - return ret; -} - -static struct dentry *ipathfs_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) -{ - struct dentry *ret; - ret = mount_single(fs_type, flags, data, ipathfs_fill_super); - if (!IS_ERR(ret)) - ipath_super = ret->d_sb; - return ret; -} - -static void ipathfs_kill_super(struct super_block *s) -{ - kill_litter_super(s); - ipath_super = NULL; -} - -int ipathfs_add_device(struct ipath_devdata *dd) -{ - int ret; - - if (ipath_super == NULL) { - ret = 0; - goto bail; - } - - ret = create_device_files(ipath_super, dd); - -bail: - return ret; -} - -int ipathfs_remove_device(struct ipath_devdata *dd) -{ - int ret; - - if (ipath_super == NULL) { - ret = 0; - goto bail; - } - - ret = remove_device_files(ipath_super, dd); - -bail: - return ret; -} - -static struct file_system_type ipathfs_fs_type = { - .owner = THIS_MODULE, - .name = "ipathfs", - .mount = ipathfs_mount, - .kill_sb = ipathfs_kill_super, -}; -MODULE_ALIAS_FS("ipathfs"); - -int __init ipath_init_ipathfs(void) -{ - return register_filesystem(&ipathfs_fs_type); -} - -void __exit ipath_exit_ipathfs(void) -{ - unregister_filesystem(&ipathfs_fs_type); -} diff --git a/drivers/staging/rdma/ipath/ipath_iba6110.c b/drivers/staging/rdma/ipath/ipath_iba6110.c deleted file mode 100644 index 5f13572a5e24..000000000000 --- a/drivers/staging/rdma/ipath/ipath_iba6110.c +++ /dev/null @@ -1,1939 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * This file contains all of the code that is specific to the InfiniPath - * HT chip. - */ - -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_registers.h" - -static void ipath_setup_ht_setextled(struct ipath_devdata *, u64, u64); - - -/* - * This lists the InfiniPath registers, in the actual chip layout. - * This structure should never be directly accessed. - * - * The names are in InterCap form because they're taken straight from - * the chip specification. Since they're only used in this file, they - * don't pollute the rest of the source. -*/ - -struct _infinipath_do_not_use_kernel_regs { - unsigned long long Revision; - unsigned long long Control; - unsigned long long PageAlign; - unsigned long long PortCnt; - unsigned long long DebugPortSelect; - unsigned long long DebugPort; - unsigned long long SendRegBase; - unsigned long long UserRegBase; - unsigned long long CounterRegBase; - unsigned long long Scratch; - unsigned long long ReservedMisc1; - unsigned long long InterruptConfig; - unsigned long long IntBlocked; - unsigned long long IntMask; - unsigned long long IntStatus; - unsigned long long IntClear; - unsigned long long ErrorMask; - unsigned long long ErrorStatus; - unsigned long long ErrorClear; - unsigned long long HwErrMask; - unsigned long long HwErrStatus; - unsigned long long HwErrClear; - unsigned long long HwDiagCtrl; - unsigned long long MDIO; - unsigned long long IBCStatus; - unsigned long long IBCCtrl; - unsigned long long ExtStatus; - unsigned long long ExtCtrl; - unsigned long long GPIOOut; - unsigned long long GPIOMask; - unsigned long long GPIOStatus; - unsigned long long GPIOClear; - unsigned long long RcvCtrl; - unsigned long long RcvBTHQP; - unsigned long long RcvHdrSize; - unsigned long long RcvHdrCnt; - unsigned long long RcvHdrEntSize; - unsigned long long RcvTIDBase; - unsigned long long RcvTIDCnt; - unsigned long long RcvEgrBase; - unsigned long long RcvEgrCnt; - unsigned long long RcvBufBase; - unsigned long long RcvBufSize; - unsigned long long RxIntMemBase; - unsigned long long RxIntMemSize; - unsigned long long RcvPartitionKey; - unsigned long long ReservedRcv[10]; - unsigned long long SendCtrl; - unsigned long long SendPIOBufBase; - unsigned long long SendPIOSize; - unsigned long long SendPIOBufCnt; - unsigned long long SendPIOAvailAddr; - unsigned long long TxIntMemBase; - unsigned long long TxIntMemSize; - unsigned long long ReservedSend[9]; - unsigned long long SendBufferError; - unsigned long long SendBufferErrorCONT1; - unsigned long long SendBufferErrorCONT2; - unsigned long long SendBufferErrorCONT3; - unsigned long long ReservedSBE[4]; - unsigned long long RcvHdrAddr0; - unsigned long long RcvHdrAddr1; - unsigned long long RcvHdrAddr2; - unsigned long long RcvHdrAddr3; - unsigned long long RcvHdrAddr4; - unsigned long long RcvHdrAddr5; - unsigned long long RcvHdrAddr6; - unsigned long long RcvHdrAddr7; - unsigned long long RcvHdrAddr8; - unsigned long long ReservedRHA[7]; - unsigned long long RcvHdrTailAddr0; - unsigned long long RcvHdrTailAddr1; - unsigned long long RcvHdrTailAddr2; - unsigned long long RcvHdrTailAddr3; - unsigned long long RcvHdrTailAddr4; - unsigned long long RcvHdrTailAddr5; - unsigned long long RcvHdrTailAddr6; - unsigned long long RcvHdrTailAddr7; - unsigned long long RcvHdrTailAddr8; - unsigned long long ReservedRHTA[7]; - unsigned long long Sync; /* Software only */ - unsigned long long Dump; /* Software only */ - unsigned long long SimVer; /* Software only */ - unsigned long long ReservedSW[5]; - unsigned long long SerdesConfig0; - unsigned long long SerdesConfig1; - unsigned long long SerdesStatus; - unsigned long long XGXSConfig; - unsigned long long ReservedSW2[4]; -}; - -struct _infinipath_do_not_use_counters { - __u64 LBIntCnt; - __u64 LBFlowStallCnt; - __u64 Reserved1; - __u64 TxUnsupVLErrCnt; - __u64 TxDataPktCnt; - __u64 TxFlowPktCnt; - __u64 TxDwordCnt; - __u64 TxLenErrCnt; - __u64 TxMaxMinLenErrCnt; - __u64 TxUnderrunCnt; - __u64 TxFlowStallCnt; - __u64 TxDroppedPktCnt; - __u64 RxDroppedPktCnt; - __u64 RxDataPktCnt; - __u64 RxFlowPktCnt; - __u64 RxDwordCnt; - __u64 RxLenErrCnt; - __u64 RxMaxMinLenErrCnt; - __u64 RxICRCErrCnt; - __u64 RxVCRCErrCnt; - __u64 RxFlowCtrlErrCnt; - __u64 RxBadFormatCnt; - __u64 RxLinkProblemCnt; - __u64 RxEBPCnt; - __u64 RxLPCRCErrCnt; - __u64 RxBufOvflCnt; - __u64 RxTIDFullErrCnt; - __u64 RxTIDValidErrCnt; - __u64 RxPKeyMismatchCnt; - __u64 RxP0HdrEgrOvflCnt; - __u64 RxP1HdrEgrOvflCnt; - __u64 RxP2HdrEgrOvflCnt; - __u64 RxP3HdrEgrOvflCnt; - __u64 RxP4HdrEgrOvflCnt; - __u64 RxP5HdrEgrOvflCnt; - __u64 RxP6HdrEgrOvflCnt; - __u64 RxP7HdrEgrOvflCnt; - __u64 RxP8HdrEgrOvflCnt; - __u64 Reserved6; - __u64 Reserved7; - __u64 IBStatusChangeCnt; - __u64 IBLinkErrRecoveryCnt; - __u64 IBLinkDownedCnt; - __u64 IBSymbolErrCnt; -}; - -#define IPATH_KREG_OFFSET(field) (offsetof( \ - struct _infinipath_do_not_use_kernel_regs, field) / sizeof(u64)) -#define IPATH_CREG_OFFSET(field) (offsetof( \ - struct _infinipath_do_not_use_counters, field) / sizeof(u64)) - -static const struct ipath_kregs ipath_ht_kregs = { - .kr_control = IPATH_KREG_OFFSET(Control), - .kr_counterregbase = IPATH_KREG_OFFSET(CounterRegBase), - .kr_debugport = IPATH_KREG_OFFSET(DebugPort), - .kr_debugportselect = IPATH_KREG_OFFSET(DebugPortSelect), - .kr_errorclear = IPATH_KREG_OFFSET(ErrorClear), - .kr_errormask = IPATH_KREG_OFFSET(ErrorMask), - .kr_errorstatus = IPATH_KREG_OFFSET(ErrorStatus), - .kr_extctrl = IPATH_KREG_OFFSET(ExtCtrl), - .kr_extstatus = IPATH_KREG_OFFSET(ExtStatus), - .kr_gpio_clear = IPATH_KREG_OFFSET(GPIOClear), - .kr_gpio_mask = IPATH_KREG_OFFSET(GPIOMask), - .kr_gpio_out = IPATH_KREG_OFFSET(GPIOOut), - .kr_gpio_status = IPATH_KREG_OFFSET(GPIOStatus), - .kr_hwdiagctrl = IPATH_KREG_OFFSET(HwDiagCtrl), - .kr_hwerrclear = IPATH_KREG_OFFSET(HwErrClear), - .kr_hwerrmask = IPATH_KREG_OFFSET(HwErrMask), - .kr_hwerrstatus = IPATH_KREG_OFFSET(HwErrStatus), - .kr_ibcctrl = IPATH_KREG_OFFSET(IBCCtrl), - .kr_ibcstatus = IPATH_KREG_OFFSET(IBCStatus), - .kr_intblocked = IPATH_KREG_OFFSET(IntBlocked), - .kr_intclear = IPATH_KREG_OFFSET(IntClear), - .kr_interruptconfig = IPATH_KREG_OFFSET(InterruptConfig), - .kr_intmask = IPATH_KREG_OFFSET(IntMask), - .kr_intstatus = IPATH_KREG_OFFSET(IntStatus), - .kr_mdio = IPATH_KREG_OFFSET(MDIO), - .kr_pagealign = IPATH_KREG_OFFSET(PageAlign), - .kr_partitionkey = IPATH_KREG_OFFSET(RcvPartitionKey), - .kr_portcnt = IPATH_KREG_OFFSET(PortCnt), - .kr_rcvbthqp = IPATH_KREG_OFFSET(RcvBTHQP), - .kr_rcvbufbase = IPATH_KREG_OFFSET(RcvBufBase), - .kr_rcvbufsize = IPATH_KREG_OFFSET(RcvBufSize), - .kr_rcvctrl = IPATH_KREG_OFFSET(RcvCtrl), - .kr_rcvegrbase = IPATH_KREG_OFFSET(RcvEgrBase), - .kr_rcvegrcnt = IPATH_KREG_OFFSET(RcvEgrCnt), - .kr_rcvhdrcnt = IPATH_KREG_OFFSET(RcvHdrCnt), - .kr_rcvhdrentsize = IPATH_KREG_OFFSET(RcvHdrEntSize), - .kr_rcvhdrsize = IPATH_KREG_OFFSET(RcvHdrSize), - .kr_rcvintmembase = IPATH_KREG_OFFSET(RxIntMemBase), - .kr_rcvintmemsize = IPATH_KREG_OFFSET(RxIntMemSize), - .kr_rcvtidbase = IPATH_KREG_OFFSET(RcvTIDBase), - .kr_rcvtidcnt = IPATH_KREG_OFFSET(RcvTIDCnt), - .kr_revision = IPATH_KREG_OFFSET(Revision), - .kr_scratch = IPATH_KREG_OFFSET(Scratch), - .kr_sendbuffererror = IPATH_KREG_OFFSET(SendBufferError), - .kr_sendctrl = IPATH_KREG_OFFSET(SendCtrl), - .kr_sendpioavailaddr = IPATH_KREG_OFFSET(SendPIOAvailAddr), - .kr_sendpiobufbase = IPATH_KREG_OFFSET(SendPIOBufBase), - .kr_sendpiobufcnt = IPATH_KREG_OFFSET(SendPIOBufCnt), - .kr_sendpiosize = IPATH_KREG_OFFSET(SendPIOSize), - .kr_sendregbase = IPATH_KREG_OFFSET(SendRegBase), - .kr_txintmembase = IPATH_KREG_OFFSET(TxIntMemBase), - .kr_txintmemsize = IPATH_KREG_OFFSET(TxIntMemSize), - .kr_userregbase = IPATH_KREG_OFFSET(UserRegBase), - .kr_serdesconfig0 = IPATH_KREG_OFFSET(SerdesConfig0), - .kr_serdesconfig1 = IPATH_KREG_OFFSET(SerdesConfig1), - .kr_serdesstatus = IPATH_KREG_OFFSET(SerdesStatus), - .kr_xgxsconfig = IPATH_KREG_OFFSET(XGXSConfig), - /* - * These should not be used directly via ipath_write_kreg64(), - * use them with ipath_write_kreg64_port(), - */ - .kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0), - .kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0) -}; - -static const struct ipath_cregs ipath_ht_cregs = { - .cr_badformatcnt = IPATH_CREG_OFFSET(RxBadFormatCnt), - .cr_erricrccnt = IPATH_CREG_OFFSET(RxICRCErrCnt), - .cr_errlinkcnt = IPATH_CREG_OFFSET(RxLinkProblemCnt), - .cr_errlpcrccnt = IPATH_CREG_OFFSET(RxLPCRCErrCnt), - .cr_errpkey = IPATH_CREG_OFFSET(RxPKeyMismatchCnt), - .cr_errrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowCtrlErrCnt), - .cr_err_rlencnt = IPATH_CREG_OFFSET(RxLenErrCnt), - .cr_errslencnt = IPATH_CREG_OFFSET(TxLenErrCnt), - .cr_errtidfull = IPATH_CREG_OFFSET(RxTIDFullErrCnt), - .cr_errtidvalid = IPATH_CREG_OFFSET(RxTIDValidErrCnt), - .cr_errvcrccnt = IPATH_CREG_OFFSET(RxVCRCErrCnt), - .cr_ibstatuschange = IPATH_CREG_OFFSET(IBStatusChangeCnt), - /* calc from Reg_CounterRegBase + offset */ - .cr_intcnt = IPATH_CREG_OFFSET(LBIntCnt), - .cr_invalidrlencnt = IPATH_CREG_OFFSET(RxMaxMinLenErrCnt), - .cr_invalidslencnt = IPATH_CREG_OFFSET(TxMaxMinLenErrCnt), - .cr_lbflowstallcnt = IPATH_CREG_OFFSET(LBFlowStallCnt), - .cr_pktrcvcnt = IPATH_CREG_OFFSET(RxDataPktCnt), - .cr_pktrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowPktCnt), - .cr_pktsendcnt = IPATH_CREG_OFFSET(TxDataPktCnt), - .cr_pktsendflowcnt = IPATH_CREG_OFFSET(TxFlowPktCnt), - .cr_portovflcnt = IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt), - .cr_rcvebpcnt = IPATH_CREG_OFFSET(RxEBPCnt), - .cr_rcvovflcnt = IPATH_CREG_OFFSET(RxBufOvflCnt), - .cr_senddropped = IPATH_CREG_OFFSET(TxDroppedPktCnt), - .cr_sendstallcnt = IPATH_CREG_OFFSET(TxFlowStallCnt), - .cr_sendunderruncnt = IPATH_CREG_OFFSET(TxUnderrunCnt), - .cr_wordrcvcnt = IPATH_CREG_OFFSET(RxDwordCnt), - .cr_wordsendcnt = IPATH_CREG_OFFSET(TxDwordCnt), - .cr_unsupvlcnt = IPATH_CREG_OFFSET(TxUnsupVLErrCnt), - .cr_rxdroppktcnt = IPATH_CREG_OFFSET(RxDroppedPktCnt), - .cr_iblinkerrrecovcnt = IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt), - .cr_iblinkdowncnt = IPATH_CREG_OFFSET(IBLinkDownedCnt), - .cr_ibsymbolerrcnt = IPATH_CREG_OFFSET(IBSymbolErrCnt) -}; - -/* kr_intstatus, kr_intclear, kr_intmask bits */ -#define INFINIPATH_I_RCVURG_MASK ((1U<<9)-1) -#define INFINIPATH_I_RCVURG_SHIFT 0 -#define INFINIPATH_I_RCVAVAIL_MASK ((1U<<9)-1) -#define INFINIPATH_I_RCVAVAIL_SHIFT 12 - -/* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */ -#define INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT 0 -#define INFINIPATH_HWE_HTCMEMPARITYERR_MASK 0x3FFFFFULL -#define INFINIPATH_HWE_HTCLNKABYTE0CRCERR 0x0000000000800000ULL -#define INFINIPATH_HWE_HTCLNKABYTE1CRCERR 0x0000000001000000ULL -#define INFINIPATH_HWE_HTCLNKBBYTE0CRCERR 0x0000000002000000ULL -#define INFINIPATH_HWE_HTCLNKBBYTE1CRCERR 0x0000000004000000ULL -#define INFINIPATH_HWE_HTCMISCERR4 0x0000000008000000ULL -#define INFINIPATH_HWE_HTCMISCERR5 0x0000000010000000ULL -#define INFINIPATH_HWE_HTCMISCERR6 0x0000000020000000ULL -#define INFINIPATH_HWE_HTCMISCERR7 0x0000000040000000ULL -#define INFINIPATH_HWE_HTCBUSTREQPARITYERR 0x0000000080000000ULL -#define INFINIPATH_HWE_HTCBUSTRESPPARITYERR 0x0000000100000000ULL -#define INFINIPATH_HWE_HTCBUSIREQPARITYERR 0x0000000200000000ULL -#define INFINIPATH_HWE_COREPLL_FBSLIP 0x0080000000000000ULL -#define INFINIPATH_HWE_COREPLL_RFSLIP 0x0100000000000000ULL -#define INFINIPATH_HWE_HTBPLL_FBSLIP 0x0200000000000000ULL -#define INFINIPATH_HWE_HTBPLL_RFSLIP 0x0400000000000000ULL -#define INFINIPATH_HWE_HTAPLL_FBSLIP 0x0800000000000000ULL -#define INFINIPATH_HWE_HTAPLL_RFSLIP 0x1000000000000000ULL -#define INFINIPATH_HWE_SERDESPLLFAILED 0x2000000000000000ULL - -#define IBA6110_IBCS_LINKTRAININGSTATE_MASK 0xf -#define IBA6110_IBCS_LINKSTATE_SHIFT 4 - -/* kr_extstatus bits */ -#define INFINIPATH_EXTS_FREQSEL 0x2 -#define INFINIPATH_EXTS_SERDESSEL 0x4 -#define INFINIPATH_EXTS_MEMBIST_ENDTEST 0x0000000000004000 -#define INFINIPATH_EXTS_MEMBIST_CORRECT 0x0000000000008000 - - -/* TID entries (memory), HT-only */ -#define INFINIPATH_RT_ADDR_MASK 0xFFFFFFFFFFULL /* 40 bits valid */ -#define INFINIPATH_RT_VALID 0x8000000000000000ULL -#define INFINIPATH_RT_ADDR_SHIFT 0 -#define INFINIPATH_RT_BUFSIZE_MASK 0x3FFFULL -#define INFINIPATH_RT_BUFSIZE_SHIFT 48 - -#define INFINIPATH_R_INTRAVAIL_SHIFT 16 -#define INFINIPATH_R_TAILUPD_SHIFT 31 - -/* kr_xgxsconfig bits */ -#define INFINIPATH_XGXS_RESET 0x7ULL - -/* - * masks and bits that are different in different chips, or present only - * in one - */ -static const ipath_err_t infinipath_hwe_htcmemparityerr_mask = - INFINIPATH_HWE_HTCMEMPARITYERR_MASK; -static const ipath_err_t infinipath_hwe_htcmemparityerr_shift = - INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT; - -static const ipath_err_t infinipath_hwe_htclnkabyte0crcerr = - INFINIPATH_HWE_HTCLNKABYTE0CRCERR; -static const ipath_err_t infinipath_hwe_htclnkabyte1crcerr = - INFINIPATH_HWE_HTCLNKABYTE1CRCERR; -static const ipath_err_t infinipath_hwe_htclnkbbyte0crcerr = - INFINIPATH_HWE_HTCLNKBBYTE0CRCERR; -static const ipath_err_t infinipath_hwe_htclnkbbyte1crcerr = - INFINIPATH_HWE_HTCLNKBBYTE1CRCERR; - -#define _IPATH_GPIO_SDA_NUM 1 -#define _IPATH_GPIO_SCL_NUM 0 - -#define IPATH_GPIO_SDA \ - (1ULL << (_IPATH_GPIO_SDA_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT)) -#define IPATH_GPIO_SCL \ - (1ULL << (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT)) - -/* keep the code below somewhat more readable; not used elsewhere */ -#define _IPATH_HTLINK0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr | \ - infinipath_hwe_htclnkabyte1crcerr) -#define _IPATH_HTLINK1_CRCBITS (infinipath_hwe_htclnkbbyte0crcerr | \ - infinipath_hwe_htclnkbbyte1crcerr) -#define _IPATH_HTLANE0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr | \ - infinipath_hwe_htclnkbbyte0crcerr) -#define _IPATH_HTLANE1_CRCBITS (infinipath_hwe_htclnkabyte1crcerr | \ - infinipath_hwe_htclnkbbyte1crcerr) - -static void hwerr_crcbits(struct ipath_devdata *dd, ipath_err_t hwerrs, - char *msg, size_t msgl) -{ - char bitsmsg[64]; - ipath_err_t crcbits = hwerrs & - (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS); - /* don't check if 8bit HT */ - if (dd->ipath_flags & IPATH_8BIT_IN_HT0) - crcbits &= ~infinipath_hwe_htclnkabyte1crcerr; - /* don't check if 8bit HT */ - if (dd->ipath_flags & IPATH_8BIT_IN_HT1) - crcbits &= ~infinipath_hwe_htclnkbbyte1crcerr; - /* - * we'll want to ignore link errors on link that is - * not in use, if any. For now, complain about both - */ - if (crcbits) { - u16 ctrl0, ctrl1; - snprintf(bitsmsg, sizeof bitsmsg, - "[HT%s lane %s CRC (%llx); powercycle to completely clear]", - !(crcbits & _IPATH_HTLINK1_CRCBITS) ? - "0 (A)" : (!(crcbits & _IPATH_HTLINK0_CRCBITS) - ? "1 (B)" : "0+1 (A+B)"), - !(crcbits & _IPATH_HTLANE1_CRCBITS) ? "0" - : (!(crcbits & _IPATH_HTLANE0_CRCBITS) ? "1" : - "0+1"), (unsigned long long) crcbits); - strlcat(msg, bitsmsg, msgl); - - /* - * print extra info for debugging. slave/primary - * config word 4, 8 (link control 0, 1) - */ - - if (pci_read_config_word(dd->pcidev, - dd->ipath_ht_slave_off + 0x4, - &ctrl0)) - dev_info(&dd->pcidev->dev, "Couldn't read " - "linkctrl0 of slave/primary " - "config block\n"); - else if (!(ctrl0 & 1 << 6)) - /* not if EOC bit set */ - ipath_dbg("HT linkctrl0 0x%x%s%s\n", ctrl0, - ((ctrl0 >> 8) & 7) ? " CRC" : "", - ((ctrl0 >> 4) & 1) ? "linkfail" : - ""); - if (pci_read_config_word(dd->pcidev, - dd->ipath_ht_slave_off + 0x8, - &ctrl1)) - dev_info(&dd->pcidev->dev, "Couldn't read " - "linkctrl1 of slave/primary " - "config block\n"); - else if (!(ctrl1 & 1 << 6)) - /* not if EOC bit set */ - ipath_dbg("HT linkctrl1 0x%x%s%s\n", ctrl1, - ((ctrl1 >> 8) & 7) ? " CRC" : "", - ((ctrl1 >> 4) & 1) ? "linkfail" : - ""); - - /* disable until driver reloaded */ - dd->ipath_hwerrmask &= ~crcbits; - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, - dd->ipath_hwerrmask); - ipath_dbg("HT crc errs: %s\n", msg); - } else - ipath_dbg("ignoring HT crc errors 0x%llx, " - "not in use\n", (unsigned long long) - (hwerrs & (_IPATH_HTLINK0_CRCBITS | - _IPATH_HTLINK1_CRCBITS))); -} - -/* 6110 specific hardware errors... */ -static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = { - INFINIPATH_HWE_MSG(HTCBUSIREQPARITYERR, "HTC Ireq Parity"), - INFINIPATH_HWE_MSG(HTCBUSTREQPARITYERR, "HTC Treq Parity"), - INFINIPATH_HWE_MSG(HTCBUSTRESPPARITYERR, "HTC Tresp Parity"), - INFINIPATH_HWE_MSG(HTCMISCERR5, "HT core Misc5"), - INFINIPATH_HWE_MSG(HTCMISCERR6, "HT core Misc6"), - INFINIPATH_HWE_MSG(HTCMISCERR7, "HT core Misc7"), - INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"), - INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"), -}; - -#define TXE_PIO_PARITY ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | \ - INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) \ - << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) -#define RXE_EAGER_PARITY (INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID \ - << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) - -static void ipath_ht_txe_recover(struct ipath_devdata *dd) -{ - ++ipath_stats.sps_txeparity; - dev_info(&dd->pcidev->dev, - "Recovering from TXE PIO parity error\n"); -} - - -/** - * ipath_ht_handle_hwerrors - display hardware errors. - * @dd: the infinipath device - * @msg: the output buffer - * @msgl: the size of the output buffer - * - * Use same msg buffer as regular errors to avoid excessive stack - * use. Most hardware errors are catastrophic, but for right now, - * we'll print them and continue. We reuse the same message buffer as - * ipath_handle_errors() to avoid excessive stack usage. - */ -static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg, - size_t msgl) -{ - ipath_err_t hwerrs; - u32 bits, ctrl; - int isfatal = 0; - char bitsmsg[64]; - int log_idx; - - hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus); - - if (!hwerrs) { - ipath_cdbg(VERBOSE, "Called but no hardware errors set\n"); - /* - * better than printing cofusing messages - * This seems to be related to clearing the crc error, or - * the pll error during init. - */ - goto bail; - } else if (hwerrs == -1LL) { - ipath_dev_err(dd, "Read of hardware error status failed " - "(all bits set); ignoring\n"); - goto bail; - } - ipath_stats.sps_hwerrs++; - - /* Always clear the error status register, except MEMBISTFAIL, - * regardless of whether we continue or stop using the chip. - * We want that set so we know it failed, even across driver reload. - * We'll still ignore it in the hwerrmask. We do this partly for - * diagnostics, but also for support */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, - hwerrs&~INFINIPATH_HWE_MEMBISTFAILED); - - hwerrs &= dd->ipath_hwerrmask; - - /* We log some errors to EEPROM, check if we have any of those. */ - for (log_idx = 0; log_idx < IPATH_EEP_LOG_CNT; ++log_idx) - if (hwerrs & dd->ipath_eep_st_masks[log_idx].hwerrs_to_log) - ipath_inc_eeprom_err(dd, log_idx, 1); - - /* - * make sure we get this much out, unless told to be quiet, - * it's a parity error we may recover from, - * or it's occurred within the last 5 seconds - */ - if ((hwerrs & ~(dd->ipath_lasthwerror | TXE_PIO_PARITY | - RXE_EAGER_PARITY)) || - (ipath_debug & __IPATH_VERBDBG)) - dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx " - "(cleared)\n", (unsigned long long) hwerrs); - dd->ipath_lasthwerror |= hwerrs; - - if (hwerrs & ~dd->ipath_hwe_bitsextant) - ipath_dev_err(dd, "hwerror interrupt with unknown errors " - "%llx set\n", (unsigned long long) - (hwerrs & ~dd->ipath_hwe_bitsextant)); - - ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control); - if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) { - /* - * parity errors in send memory are recoverable, - * just cancel the send (if indicated in * sendbuffererror), - * count the occurrence, unfreeze (if no other handled - * hardware error bits are set), and continue. They can - * occur if a processor speculative read is done to the PIO - * buffer while we are sending a packet, for example. - */ - if (hwerrs & TXE_PIO_PARITY) { - ipath_ht_txe_recover(dd); - hwerrs &= ~TXE_PIO_PARITY; - } - - if (!hwerrs) { - ipath_dbg("Clearing freezemode on ignored or " - "recovered hardware error\n"); - ipath_clear_freeze(dd); - } - } - - *msg = '\0'; - - /* - * may someday want to decode into which bits are which - * functional area for parity errors, etc. - */ - if (hwerrs & (infinipath_hwe_htcmemparityerr_mask - << INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT)) { - bits = (u32) ((hwerrs >> - INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) & - INFINIPATH_HWE_HTCMEMPARITYERR_MASK); - snprintf(bitsmsg, sizeof bitsmsg, "[HTC Parity Errs %x] ", - bits); - strlcat(msg, bitsmsg, msgl); - } - - ipath_format_hwerrors(hwerrs, - ipath_6110_hwerror_msgs, - ARRAY_SIZE(ipath_6110_hwerror_msgs), - msg, msgl); - - if (hwerrs & (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS)) - hwerr_crcbits(dd, hwerrs, msg, msgl); - - if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) { - strlcat(msg, "[Memory BIST test failed, InfiniPath hardware unusable]", - msgl); - /* ignore from now on, so disable until driver reloaded */ - dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED; - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, - dd->ipath_hwerrmask); - } -#define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP | \ - INFINIPATH_HWE_COREPLL_RFSLIP | \ - INFINIPATH_HWE_HTBPLL_FBSLIP | \ - INFINIPATH_HWE_HTBPLL_RFSLIP | \ - INFINIPATH_HWE_HTAPLL_FBSLIP | \ - INFINIPATH_HWE_HTAPLL_RFSLIP) - - if (hwerrs & _IPATH_PLL_FAIL) { - snprintf(bitsmsg, sizeof bitsmsg, - "[PLL failed (%llx), InfiniPath hardware unusable]", - (unsigned long long) (hwerrs & _IPATH_PLL_FAIL)); - strlcat(msg, bitsmsg, msgl); - /* ignore from now on, so disable until driver reloaded */ - dd->ipath_hwerrmask &= ~(hwerrs & _IPATH_PLL_FAIL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, - dd->ipath_hwerrmask); - } - - if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) { - /* - * If it occurs, it is left masked since the eternal - * interface is unused - */ - dd->ipath_hwerrmask &= ~INFINIPATH_HWE_SERDESPLLFAILED; - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, - dd->ipath_hwerrmask); - } - - if (hwerrs) { - /* - * if any set that we aren't ignoring; only - * make the complaint once, in case it's stuck - * or recurring, and we get here multiple - * times. - * force link down, so switch knows, and - * LEDs are turned off - */ - if (dd->ipath_flags & IPATH_INITTED) { - ipath_set_linkstate(dd, IPATH_IB_LINKDOWN); - ipath_setup_ht_setextled(dd, - INFINIPATH_IBCS_L_STATE_DOWN, - INFINIPATH_IBCS_LT_STATE_DISABLED); - ipath_dev_err(dd, "Fatal Hardware Error (freeze " - "mode), no longer usable, SN %.16s\n", - dd->ipath_serial); - isfatal = 1; - } - *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; - /* mark as having had error */ - *dd->ipath_statusp |= IPATH_STATUS_HWERROR; - /* - * mark as not usable, at a minimum until driver - * is reloaded, probably until reboot, since no - * other reset is possible. - */ - dd->ipath_flags &= ~IPATH_INITTED; - } else { - *msg = 0; /* recovered from all of them */ - } - if (*msg) - ipath_dev_err(dd, "%s hardware error\n", msg); - if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg) - /* - * for status file; if no trailing brace is copied, - * we'll know it was truncated. - */ - snprintf(dd->ipath_freezemsg, - dd->ipath_freezelen, "{%s}", msg); - -bail:; -} - -/** - * ipath_ht_boardname - fill in the board name - * @dd: the infinipath device - * @name: the output buffer - * @namelen: the size of the output buffer - * - * fill in the board name, based on the board revision register - */ -static int ipath_ht_boardname(struct ipath_devdata *dd, char *name, - size_t namelen) -{ - char *n = NULL; - u8 boardrev = dd->ipath_boardrev; - int ret = 0; - - switch (boardrev) { - case 5: - /* - * original production board; two production levels, with - * different serial number ranges. See ipath_ht_early_init() for - * case where we enable IPATH_GPIO_INTR for later serial # range. - * Original 112* serial number is no longer supported. - */ - n = "InfiniPath_QHT7040"; - break; - case 7: - /* small form factor production board */ - n = "InfiniPath_QHT7140"; - break; - default: /* don't know, just print the number */ - ipath_dev_err(dd, "Don't yet know about board " - "with ID %u\n", boardrev); - snprintf(name, namelen, "Unknown_InfiniPath_QHT7xxx_%u", - boardrev); - break; - } - if (n) - snprintf(name, namelen, "%s", n); - - if (ret) { - ipath_dev_err(dd, "Unsupported InfiniPath board %s!\n", name); - goto bail; - } - if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 || - dd->ipath_minrev > 4)) { - /* - * This version of the driver only supports Rev 3.2 - 3.4 - */ - ipath_dev_err(dd, - "Unsupported InfiniPath hardware revision %u.%u!\n", - dd->ipath_majrev, dd->ipath_minrev); - ret = 1; - goto bail; - } - /* - * pkt/word counters are 32 bit, and therefore wrap fast enough - * that we snapshot them from a timer, and maintain 64 bit shadow - * copies - */ - dd->ipath_flags |= IPATH_32BITCOUNTERS; - dd->ipath_flags |= IPATH_GPIO_INTR; - if (dd->ipath_lbus_speed != 800) - ipath_dev_err(dd, - "Incorrectly configured for HT @ %uMHz\n", - dd->ipath_lbus_speed); - - /* - * set here, not in ipath_init_*_funcs because we have to do - * it after we can read chip registers. - */ - dd->ipath_ureg_align = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_pagealign); - -bail: - return ret; -} - -static void ipath_check_htlink(struct ipath_devdata *dd) -{ - u8 linkerr, link_off, i; - - for (i = 0; i < 2; i++) { - link_off = dd->ipath_ht_slave_off + i * 4 + 0xd; - if (pci_read_config_byte(dd->pcidev, link_off, &linkerr)) - dev_info(&dd->pcidev->dev, "Couldn't read " - "linkerror%d of HT slave/primary block\n", - i); - else if (linkerr & 0xf0) { - ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, " - "clearing\n", linkerr >> 4, i); - /* - * writing the linkerr bits that are set should - * clear them - */ - if (pci_write_config_byte(dd->pcidev, link_off, - linkerr)) - ipath_dbg("Failed write to clear HT " - "linkerror%d\n", i); - if (pci_read_config_byte(dd->pcidev, link_off, - &linkerr)) - dev_info(&dd->pcidev->dev, - "Couldn't reread linkerror%d of " - "HT slave/primary block\n", i); - else if (linkerr & 0xf0) - dev_info(&dd->pcidev->dev, - "HT linkerror%d bits 0x%x " - "couldn't be cleared\n", - i, linkerr >> 4); - } - } -} - -static int ipath_setup_ht_reset(struct ipath_devdata *dd) -{ - ipath_dbg("No reset possible for this InfiniPath hardware\n"); - return 0; -} - -#define HT_INTR_DISC_CONFIG 0x80 /* HT interrupt and discovery cap */ -#define HT_INTR_REG_INDEX 2 /* intconfig requires indirect accesses */ - -/* - * Bits 13-15 of command==0 is slave/primary block. Clear any HT CRC - * errors. We only bother to do this at load time, because it's OK if - * it happened before we were loaded (first time after boot/reset), - * but any time after that, it's fatal anyway. Also need to not check - * for upper byte errors if we are in 8 bit mode, so figure out - * our width. For now, at least, also complain if it's 8 bit. - */ -static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev, - int pos, u8 cap_type) -{ - u8 linkwidth = 0, linkerr, link_a_b_off, link_off; - u16 linkctrl = 0; - int i; - - dd->ipath_ht_slave_off = pos; - /* command word, master_host bit */ - /* master host || slave */ - if ((cap_type >> 2) & 1) - link_a_b_off = 4; - else - link_a_b_off = 0; - ipath_cdbg(VERBOSE, "HT%u (Link %c) connected to processor\n", - link_a_b_off ? 1 : 0, - link_a_b_off ? 'B' : 'A'); - - link_a_b_off += pos; - - /* - * check both link control registers; clear both HT CRC sets if - * necessary. - */ - for (i = 0; i < 2; i++) { - link_off = pos + i * 4 + 0x4; - if (pci_read_config_word(pdev, link_off, &linkctrl)) - ipath_dev_err(dd, "Couldn't read HT link control%d " - "register\n", i); - else if (linkctrl & (0xf << 8)) { - ipath_cdbg(VERBOSE, "Clear linkctrl%d CRC Error " - "bits %x\n", i, linkctrl & (0xf << 8)); - /* - * now write them back to clear the error. - */ - pci_write_config_word(pdev, link_off, - linkctrl & (0xf << 8)); - } - } - - /* - * As with HT CRC bits, same for protocol errors that might occur - * during boot. - */ - for (i = 0; i < 2; i++) { - link_off = pos + i * 4 + 0xd; - if (pci_read_config_byte(pdev, link_off, &linkerr)) - dev_info(&pdev->dev, "Couldn't read linkerror%d " - "of HT slave/primary block\n", i); - else if (linkerr & 0xf0) { - ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, " - "clearing\n", linkerr >> 4, i); - /* - * writing the linkerr bits that are set will clear - * them - */ - if (pci_write_config_byte - (pdev, link_off, linkerr)) - ipath_dbg("Failed write to clear HT " - "linkerror%d\n", i); - if (pci_read_config_byte(pdev, link_off, &linkerr)) - dev_info(&pdev->dev, "Couldn't reread " - "linkerror%d of HT slave/primary " - "block\n", i); - else if (linkerr & 0xf0) - dev_info(&pdev->dev, "HT linkerror%d bits " - "0x%x couldn't be cleared\n", - i, linkerr >> 4); - } - } - - /* - * this is just for our link to the host, not devices connected - * through tunnel. - */ - - if (pci_read_config_byte(pdev, link_a_b_off + 7, &linkwidth)) - ipath_dev_err(dd, "Couldn't read HT link width " - "config register\n"); - else { - u32 width; - switch (linkwidth & 7) { - case 5: - width = 4; - break; - case 4: - width = 2; - break; - case 3: - width = 32; - break; - case 1: - width = 16; - break; - case 0: - default: /* if wrong, assume 8 bit */ - width = 8; - break; - } - - dd->ipath_lbus_width = width; - - if (linkwidth != 0x11) { - ipath_dev_err(dd, "Not configured for 16 bit HT " - "(%x)\n", linkwidth); - if (!(linkwidth & 0xf)) { - ipath_dbg("Will ignore HT lane1 errors\n"); - dd->ipath_flags |= IPATH_8BIT_IN_HT0; - } - } - } - - /* - * this is just for our link to the host, not devices connected - * through tunnel. - */ - if (pci_read_config_byte(pdev, link_a_b_off + 0xd, &linkwidth)) - ipath_dev_err(dd, "Couldn't read HT link frequency " - "config register\n"); - else { - u32 speed; - switch (linkwidth & 0xf) { - case 6: - speed = 1000; - break; - case 5: - speed = 800; - break; - case 4: - speed = 600; - break; - case 3: - speed = 500; - break; - case 2: - speed = 400; - break; - case 1: - speed = 300; - break; - default: - /* - * assume reserved and vendor-specific are 200... - */ - case 0: - speed = 200; - break; - } - dd->ipath_lbus_speed = speed; - } - - snprintf(dd->ipath_lbus_info, sizeof(dd->ipath_lbus_info), - "HyperTransport,%uMHz,x%u\n", - dd->ipath_lbus_speed, - dd->ipath_lbus_width); -} - -static int ipath_ht_intconfig(struct ipath_devdata *dd) -{ - int ret; - - if (dd->ipath_intconfig) { - ipath_write_kreg(dd, dd->ipath_kregs->kr_interruptconfig, - dd->ipath_intconfig); /* interrupt address */ - ret = 0; - } else { - ipath_dev_err(dd, "No interrupts enabled, couldn't setup " - "interrupt address\n"); - ret = -EINVAL; - } - - return ret; -} - -static void ipath_ht_irq_update(struct pci_dev *dev, int irq, - struct ht_irq_msg *msg) -{ - struct ipath_devdata *dd = pci_get_drvdata(dev); - u64 prev_intconfig = dd->ipath_intconfig; - - dd->ipath_intconfig = msg->address_lo; - dd->ipath_intconfig |= ((u64) msg->address_hi) << 32; - - /* - * If the previous value of dd->ipath_intconfig is zero, we're - * getting configured for the first time, and must not program the - * intconfig register here (it will be programmed later, when the - * hardware is ready). Otherwise, we should. - */ - if (prev_intconfig) - ipath_ht_intconfig(dd); -} - -/** - * ipath_setup_ht_config - setup the interruptconfig register - * @dd: the infinipath device - * @pdev: the PCI device - * - * setup the interruptconfig register from the HT config info. - * Also clear CRC errors in HT linkcontrol, if necessary. - * This is done only for the real hardware. It is done before - * chip address space is initted, so can't touch infinipath registers - */ -static int ipath_setup_ht_config(struct ipath_devdata *dd, - struct pci_dev *pdev) -{ - int pos, ret; - - ret = __ht_create_irq(pdev, 0, ipath_ht_irq_update); - if (ret < 0) { - ipath_dev_err(dd, "Couldn't create interrupt handler: " - "err %d\n", ret); - goto bail; - } - dd->ipath_irq = ret; - ret = 0; - - /* - * Handle clearing CRC errors in linkctrl register if necessary. We - * do this early, before we ever enable errors or hardware errors, - * mostly to avoid causing the chip to enter freeze mode. - */ - pos = pci_find_capability(pdev, PCI_CAP_ID_HT); - if (!pos) { - ipath_dev_err(dd, "Couldn't find HyperTransport " - "capability; no interrupts\n"); - ret = -ENODEV; - goto bail; - } - do { - u8 cap_type; - - /* - * The HT capability type byte is 3 bytes after the - * capability byte. - */ - if (pci_read_config_byte(pdev, pos + 3, &cap_type)) { - dev_info(&pdev->dev, "Couldn't read config " - "command @ %d\n", pos); - continue; - } - if (!(cap_type & 0xE0)) - slave_or_pri_blk(dd, pdev, pos, cap_type); - } while ((pos = pci_find_next_capability(pdev, pos, - PCI_CAP_ID_HT))); - - dd->ipath_flags |= IPATH_SWAP_PIOBUFS; - -bail: - return ret; -} - -/** - * ipath_setup_ht_cleanup - clean up any per-chip chip-specific stuff - * @dd: the infinipath device - * - * Called during driver unload. - * This is currently a nop for the HT chip, not for all chips - */ -static void ipath_setup_ht_cleanup(struct ipath_devdata *dd) -{ -} - -/** - * ipath_setup_ht_setextled - set the state of the two external LEDs - * @dd: the infinipath device - * @lst: the L state - * @ltst: the LT state - * - * Set the state of the two external LEDs, to indicate physical and - * logical state of IB link. For this chip (at least with recommended - * board pinouts), LED1 is Green (physical state), and LED2 is Yellow - * (logical state) - * - * Note: We try to match the Mellanox HCA LED behavior as best - * we can. Green indicates physical link state is OK (something is - * plugged in, and we can train). - * Amber indicates the link is logically up (ACTIVE). - * Mellanox further blinks the amber LED to indicate data packet - * activity, but we have no hardware support for that, so it would - * require waking up every 10-20 msecs and checking the counters - * on the chip, and then turning the LED off if appropriate. That's - * visible overhead, so not something we will do. - * - */ -static void ipath_setup_ht_setextled(struct ipath_devdata *dd, - u64 lst, u64 ltst) -{ - u64 extctl; - unsigned long flags = 0; - - /* the diags use the LED to indicate diag info, so we leave - * the external LED alone when the diags are running */ - if (ipath_diag_inuse) - return; - - /* Allow override of LED display for, e.g. Locating system in rack */ - if (dd->ipath_led_override) { - ltst = (dd->ipath_led_override & IPATH_LED_PHYS) - ? INFINIPATH_IBCS_LT_STATE_LINKUP - : INFINIPATH_IBCS_LT_STATE_DISABLED; - lst = (dd->ipath_led_override & IPATH_LED_LOG) - ? INFINIPATH_IBCS_L_STATE_ACTIVE - : INFINIPATH_IBCS_L_STATE_DOWN; - } - - spin_lock_irqsave(&dd->ipath_gpio_lock, flags); - /* - * start by setting both LED control bits to off, then turn - * on the appropriate bit(s). - */ - if (dd->ipath_boardrev == 8) { /* LS/X-1 uses different pins */ - /* - * major difference is that INFINIPATH_EXTC_LEDGBLERR_OFF - * is inverted, because it is normally used to indicate - * a hardware fault at reset, if there were errors - */ - extctl = (dd->ipath_extctrl & ~INFINIPATH_EXTC_LEDGBLOK_ON) - | INFINIPATH_EXTC_LEDGBLERR_OFF; - if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP) - extctl &= ~INFINIPATH_EXTC_LEDGBLERR_OFF; - if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE) - extctl |= INFINIPATH_EXTC_LEDGBLOK_ON; - } else { - extctl = dd->ipath_extctrl & - ~(INFINIPATH_EXTC_LED1PRIPORT_ON | - INFINIPATH_EXTC_LED2PRIPORT_ON); - if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP) - extctl |= INFINIPATH_EXTC_LED1PRIPORT_ON; - if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE) - extctl |= INFINIPATH_EXTC_LED2PRIPORT_ON; - } - dd->ipath_extctrl = extctl; - ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl); - spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags); -} - -static void ipath_init_ht_variables(struct ipath_devdata *dd) -{ - /* - * setup the register offsets, since they are different for each - * chip - */ - dd->ipath_kregs = &ipath_ht_kregs; - dd->ipath_cregs = &ipath_ht_cregs; - - dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM; - dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM; - dd->ipath_gpio_sda = IPATH_GPIO_SDA; - dd->ipath_gpio_scl = IPATH_GPIO_SCL; - - /* - * Fill in data for field-values that change in newer chips. - * We dynamically specify only the mask for LINKTRAININGSTATE - * and only the shift for LINKSTATE, as they are the only ones - * that change. Also precalculate the 3 link states of interest - * and the combined mask. - */ - dd->ibcs_ls_shift = IBA6110_IBCS_LINKSTATE_SHIFT; - dd->ibcs_lts_mask = IBA6110_IBCS_LINKTRAININGSTATE_MASK; - dd->ibcs_mask = (INFINIPATH_IBCS_LINKSTATE_MASK << - dd->ibcs_ls_shift) | dd->ibcs_lts_mask; - dd->ib_init = (INFINIPATH_IBCS_LT_STATE_LINKUP << - INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) | - (INFINIPATH_IBCS_L_STATE_INIT << dd->ibcs_ls_shift); - dd->ib_arm = (INFINIPATH_IBCS_LT_STATE_LINKUP << - INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) | - (INFINIPATH_IBCS_L_STATE_ARM << dd->ibcs_ls_shift); - dd->ib_active = (INFINIPATH_IBCS_LT_STATE_LINKUP << - INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) | - (INFINIPATH_IBCS_L_STATE_ACTIVE << dd->ibcs_ls_shift); - - /* - * Fill in data for ibcc field-values that change in newer chips. - * We dynamically specify only the mask for LINKINITCMD - * and only the shift for LINKCMD and MAXPKTLEN, as they are - * the only ones that change. - */ - dd->ibcc_lic_mask = INFINIPATH_IBCC_LINKINITCMD_MASK; - dd->ibcc_lc_shift = INFINIPATH_IBCC_LINKCMD_SHIFT; - dd->ibcc_mpl_shift = INFINIPATH_IBCC_MAXPKTLEN_SHIFT; - - /* Fill in shifts for RcvCtrl. */ - dd->ipath_r_portenable_shift = INFINIPATH_R_PORTENABLE_SHIFT; - dd->ipath_r_intravail_shift = INFINIPATH_R_INTRAVAIL_SHIFT; - dd->ipath_r_tailupd_shift = INFINIPATH_R_TAILUPD_SHIFT; - dd->ipath_r_portcfg_shift = 0; /* Not on IBA6110 */ - - dd->ipath_i_bitsextant = - (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) | - (INFINIPATH_I_RCVAVAIL_MASK << - INFINIPATH_I_RCVAVAIL_SHIFT) | - INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT | - INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO; - - dd->ipath_e_bitsextant = - INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC | - INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN | - INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN | - INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RUNEXPCHAR | - INFINIPATH_E_RUNSUPVL | INFINIPATH_E_REBP | - INFINIPATH_E_RIBFLOW | INFINIPATH_E_RBADVERSION | - INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL | - INFINIPATH_E_RBADTID | INFINIPATH_E_RHDRLEN | - INFINIPATH_E_RHDR | INFINIPATH_E_RIBLOSTLINK | - INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SMAXPKTLEN | - INFINIPATH_E_SUNDERRUN | INFINIPATH_E_SPKTLEN | - INFINIPATH_E_SDROPPEDSMPPKT | INFINIPATH_E_SDROPPEDDATAPKT | - INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM | - INFINIPATH_E_SUNSUPVL | INFINIPATH_E_IBSTATUSCHANGED | - INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET | - INFINIPATH_E_HARDWARE; - - dd->ipath_hwe_bitsextant = - (INFINIPATH_HWE_HTCMEMPARITYERR_MASK << - INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) | - (INFINIPATH_HWE_TXEMEMPARITYERR_MASK << - INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) | - (INFINIPATH_HWE_RXEMEMPARITYERR_MASK << - INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) | - INFINIPATH_HWE_HTCLNKABYTE0CRCERR | - INFINIPATH_HWE_HTCLNKABYTE1CRCERR | - INFINIPATH_HWE_HTCLNKBBYTE0CRCERR | - INFINIPATH_HWE_HTCLNKBBYTE1CRCERR | - INFINIPATH_HWE_HTCMISCERR4 | - INFINIPATH_HWE_HTCMISCERR5 | INFINIPATH_HWE_HTCMISCERR6 | - INFINIPATH_HWE_HTCMISCERR7 | - INFINIPATH_HWE_HTCBUSTREQPARITYERR | - INFINIPATH_HWE_HTCBUSTRESPPARITYERR | - INFINIPATH_HWE_HTCBUSIREQPARITYERR | - INFINIPATH_HWE_RXDSYNCMEMPARITYERR | - INFINIPATH_HWE_MEMBISTFAILED | - INFINIPATH_HWE_COREPLL_FBSLIP | - INFINIPATH_HWE_COREPLL_RFSLIP | - INFINIPATH_HWE_HTBPLL_FBSLIP | - INFINIPATH_HWE_HTBPLL_RFSLIP | - INFINIPATH_HWE_HTAPLL_FBSLIP | - INFINIPATH_HWE_HTAPLL_RFSLIP | - INFINIPATH_HWE_SERDESPLLFAILED | - INFINIPATH_HWE_IBCBUSTOSPCPARITYERR | - INFINIPATH_HWE_IBCBUSFRSPCPARITYERR; - - dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK; - dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK; - dd->ipath_i_rcvavail_shift = INFINIPATH_I_RCVAVAIL_SHIFT; - dd->ipath_i_rcvurg_shift = INFINIPATH_I_RCVURG_SHIFT; - - /* - * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity. - * 2 is Some Misc, 3 is reserved for future. - */ - dd->ipath_eep_st_masks[0].hwerrs_to_log = - INFINIPATH_HWE_TXEMEMPARITYERR_MASK << - INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT; - - dd->ipath_eep_st_masks[1].hwerrs_to_log = - INFINIPATH_HWE_RXEMEMPARITYERR_MASK << - INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT; - - dd->ipath_eep_st_masks[2].errs_to_log = INFINIPATH_E_RESET; - - dd->delay_mult = 2; /* SDR, 4X, can't change */ - - dd->ipath_link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X; - dd->ipath_link_speed_supported = IPATH_IB_SDR; - dd->ipath_link_width_enabled = IB_WIDTH_4X; - dd->ipath_link_speed_enabled = dd->ipath_link_speed_supported; - /* these can't change for this chip, so set once */ - dd->ipath_link_width_active = dd->ipath_link_width_enabled; - dd->ipath_link_speed_active = dd->ipath_link_speed_enabled; -} - -/** - * ipath_ht_init_hwerrors - enable hardware errors - * @dd: the infinipath device - * - * now that we have finished initializing everything that might reasonably - * cause a hardware error, and cleared those errors bits as they occur, - * we can enable hardware errors in the mask (potentially enabling - * freeze mode), and enable hardware errors as errors (along with - * everything else) in errormask - */ -static void ipath_ht_init_hwerrors(struct ipath_devdata *dd) -{ - ipath_err_t val; - u64 extsval; - - extsval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus); - - if (!(extsval & INFINIPATH_EXTS_MEMBIST_ENDTEST)) - ipath_dev_err(dd, "MemBIST did not complete!\n"); - if (extsval & INFINIPATH_EXTS_MEMBIST_CORRECT) - ipath_dbg("MemBIST corrected\n"); - - ipath_check_htlink(dd); - - /* barring bugs, all hwerrors become interrupts, which can */ - val = -1LL; - /* don't look at crc lane1 if 8 bit */ - if (dd->ipath_flags & IPATH_8BIT_IN_HT0) - val &= ~infinipath_hwe_htclnkabyte1crcerr; - /* don't look at crc lane1 if 8 bit */ - if (dd->ipath_flags & IPATH_8BIT_IN_HT1) - val &= ~infinipath_hwe_htclnkbbyte1crcerr; - - /* - * disable RXDSYNCMEMPARITY because external serdes is unused, - * and therefore the logic will never be used or initialized, - * and uninitialized state will normally result in this error - * being asserted. Similarly for the external serdess pll - * lock signal. - */ - val &= ~(INFINIPATH_HWE_SERDESPLLFAILED | - INFINIPATH_HWE_RXDSYNCMEMPARITYERR); - - /* - * Disable MISCERR4 because of an inversion in the HT core - * logic checking for errors that cause this bit to be set. - * The errata can also cause the protocol error bit to be set - * in the HT config space linkerror register(s). - */ - val &= ~INFINIPATH_HWE_HTCMISCERR4; - - /* - * PLL ignored because unused MDIO interface has a logic problem - */ - if (dd->ipath_boardrev == 4 || dd->ipath_boardrev == 9) - val &= ~INFINIPATH_HWE_SERDESPLLFAILED; - dd->ipath_hwerrmask = val; -} - - - - -/** - * ipath_ht_bringup_serdes - bring up the serdes - * @dd: the infinipath device - */ -static int ipath_ht_bringup_serdes(struct ipath_devdata *dd) -{ - u64 val, config1; - int ret = 0, change = 0; - - ipath_dbg("Trying to bringup serdes\n"); - - if (ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus) & - INFINIPATH_HWE_SERDESPLLFAILED) - { - ipath_dbg("At start, serdes PLL failed bit set in " - "hwerrstatus, clearing and continuing\n"); - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, - INFINIPATH_HWE_SERDESPLLFAILED); - } - - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0); - config1 = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig1); - - ipath_cdbg(VERBOSE, "Initial serdes status is config0=%llx " - "config1=%llx, sstatus=%llx xgxs %llx\n", - (unsigned long long) val, (unsigned long long) config1, - (unsigned long long) - ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus), - (unsigned long long) - ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig)); - - /* force reset on */ - val |= INFINIPATH_SERDC0_RESET_PLL - /* | INFINIPATH_SERDC0_RESET_MASK */ - ; - ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val); - udelay(15); /* need pll reset set at least for a bit */ - - if (val & INFINIPATH_SERDC0_RESET_PLL) { - u64 val2 = val &= ~INFINIPATH_SERDC0_RESET_PLL; - /* set lane resets, and tx idle, during pll reset */ - val2 |= INFINIPATH_SERDC0_RESET_MASK | - INFINIPATH_SERDC0_TXIDLE; - ipath_cdbg(VERBOSE, "Clearing serdes PLL reset (writing " - "%llx)\n", (unsigned long long) val2); - ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, - val2); - /* - * be sure chip saw it - */ - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - /* - * need pll reset clear at least 11 usec before lane - * resets cleared; give it a few more - */ - udelay(15); - val = val2; /* for check below */ - } - - if (val & (INFINIPATH_SERDC0_RESET_PLL | - INFINIPATH_SERDC0_RESET_MASK | - INFINIPATH_SERDC0_TXIDLE)) { - val &= ~(INFINIPATH_SERDC0_RESET_PLL | - INFINIPATH_SERDC0_RESET_MASK | - INFINIPATH_SERDC0_TXIDLE); - /* clear them */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, - val); - } - - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig); - if (val & INFINIPATH_XGXS_RESET) { - /* normally true after boot */ - val &= ~INFINIPATH_XGXS_RESET; - change = 1; - } - if (((val >> INFINIPATH_XGXS_RX_POL_SHIFT) & - INFINIPATH_XGXS_RX_POL_MASK) != dd->ipath_rx_pol_inv ) { - /* need to compensate for Tx inversion in partner */ - val &= ~(INFINIPATH_XGXS_RX_POL_MASK << - INFINIPATH_XGXS_RX_POL_SHIFT); - val |= dd->ipath_rx_pol_inv << - INFINIPATH_XGXS_RX_POL_SHIFT; - change = 1; - } - if (change) - ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); - - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0); - - /* clear current and de-emphasis bits */ - config1 &= ~0x0ffffffff00ULL; - /* set current to 20ma */ - config1 |= 0x00000000000ULL; - /* set de-emphasis to -5.68dB */ - config1 |= 0x0cccc000000ULL; - ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig1, config1); - - ipath_cdbg(VERBOSE, "After setup: serdes status is config0=%llx " - "config1=%llx, sstatus=%llx xgxs %llx\n", - (unsigned long long) val, (unsigned long long) config1, - (unsigned long long) - ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus), - (unsigned long long) - ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig)); - - return ret; /* for now, say we always succeeded */ -} - -/** - * ipath_ht_quiet_serdes - set serdes to txidle - * @dd: the infinipath device - * driver is being unloaded - */ -static void ipath_ht_quiet_serdes(struct ipath_devdata *dd) -{ - u64 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0); - - val |= INFINIPATH_SERDC0_TXIDLE; - ipath_dbg("Setting TxIdleEn on serdes (config0 = %llx)\n", - (unsigned long long) val); - ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val); -} - -/** - * ipath_pe_put_tid - write a TID in chip - * @dd: the infinipath device - * @tidptr: pointer to the expected TID (in chip) to update - * @tidtype: RCVHQ_RCV_TYPE_EAGER (1) for eager, RCVHQ_RCV_TYPE_EXPECTED (0) for expected - * @pa: physical address of in memory buffer; ipath_tidinvalid if freeing - * - * This exists as a separate routine to allow for special locking etc. - * It's used for both the full cleanup on exit, as well as the normal - * setup and teardown. - */ -static void ipath_ht_put_tid(struct ipath_devdata *dd, - u64 __iomem *tidptr, u32 type, - unsigned long pa) -{ - if (!dd->ipath_kregbase) - return; - - if (pa != dd->ipath_tidinvalid) { - if (unlikely((pa & ~INFINIPATH_RT_ADDR_MASK))) { - dev_info(&dd->pcidev->dev, - "physaddr %lx has more than " - "40 bits, using only 40!!!\n", pa); - pa &= INFINIPATH_RT_ADDR_MASK; - } - if (type == RCVHQ_RCV_TYPE_EAGER) - pa |= dd->ipath_tidtemplate; - else { - /* in words (fixed, full page). */ - u64 lenvalid = PAGE_SIZE >> 2; - lenvalid <<= INFINIPATH_RT_BUFSIZE_SHIFT; - pa |= lenvalid | INFINIPATH_RT_VALID; - } - } - - writeq(pa, tidptr); -} - - -/** - * ipath_ht_clear_tid - clear all TID entries for a port, expected and eager - * @dd: the infinipath device - * @port: the port - * - * Used from ipath_close(), and at chip initialization. - */ -static void ipath_ht_clear_tids(struct ipath_devdata *dd, unsigned port) -{ - u64 __iomem *tidbase; - int i; - - if (!dd->ipath_kregbase) - return; - - ipath_cdbg(VERBOSE, "Invalidate TIDs for port %u\n", port); - - /* - * need to invalidate all of the expected TID entries for this - * port, so we don't have valid entries that might somehow get - * used (early in next use of this port, or through some bug) - */ - tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) + - dd->ipath_rcvtidbase + - port * dd->ipath_rcvtidcnt * - sizeof(*tidbase)); - for (i = 0; i < dd->ipath_rcvtidcnt; i++) - ipath_ht_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED, - dd->ipath_tidinvalid); - - tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) + - dd->ipath_rcvegrbase + - port * dd->ipath_rcvegrcnt * - sizeof(*tidbase)); - - for (i = 0; i < dd->ipath_rcvegrcnt; i++) - ipath_ht_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER, - dd->ipath_tidinvalid); -} - -/** - * ipath_ht_tidtemplate - setup constants for TID updates - * @dd: the infinipath device - * - * We setup stuff that we use a lot, to avoid calculating each time - */ -static void ipath_ht_tidtemplate(struct ipath_devdata *dd) -{ - dd->ipath_tidtemplate = dd->ipath_ibmaxlen >> 2; - dd->ipath_tidtemplate <<= INFINIPATH_RT_BUFSIZE_SHIFT; - dd->ipath_tidtemplate |= INFINIPATH_RT_VALID; - - /* - * work around chip errata bug 7358, by marking invalid tids - * as having max length - */ - dd->ipath_tidinvalid = (-1LL & INFINIPATH_RT_BUFSIZE_MASK) << - INFINIPATH_RT_BUFSIZE_SHIFT; -} - -static int ipath_ht_early_init(struct ipath_devdata *dd) -{ - u32 __iomem *piobuf; - u32 pioincr, val32; - int i; - - /* - * one cache line; long IB headers will spill over into received - * buffer - */ - dd->ipath_rcvhdrentsize = 16; - dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE; - - /* - * For HT, we allocate a somewhat overly large eager buffer, - * such that we can guarantee that we can receive the largest - * packet that we can send out. To truly support a 4KB MTU, - * we need to bump this to a large value. To date, other than - * testing, we have never encountered an HCA that can really - * send 4KB MTU packets, so we do not handle that (we'll get - * errors interrupts if we ever see one). - */ - dd->ipath_rcvegrbufsize = dd->ipath_piosize2k; - - /* - * the min() check here is currently a nop, but it may not - * always be, depending on just how we do ipath_rcvegrbufsize - */ - dd->ipath_ibmaxlen = min(dd->ipath_piosize2k, - dd->ipath_rcvegrbufsize); - dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen; - ipath_ht_tidtemplate(dd); - - /* - * zero all the TID entries at startup. We do this for sanity, - * in case of a previous driver crash of some kind, and also - * because the chip powers up with these memories in an unknown - * state. Use portcnt, not cfgports, since this is for the - * full chip, not for current (possibly different) configuration - * value. - * Chip Errata bug 6447 - */ - for (val32 = 0; val32 < dd->ipath_portcnt; val32++) - ipath_ht_clear_tids(dd, val32); - - /* - * write the pbc of each buffer, to be sure it's initialized, then - * cancel all the buffers, and also abort any packets that might - * have been in flight for some reason (the latter is for driver - * unload/reload, but isn't a bad idea at first init). PIO send - * isn't enabled at this point, so there is no danger of sending - * these out on the wire. - * Chip Errata bug 6610 - */ - piobuf = (u32 __iomem *) (((char __iomem *)(dd->ipath_kregbase)) + - dd->ipath_piobufbase); - pioincr = dd->ipath_palign / sizeof(*piobuf); - for (i = 0; i < dd->ipath_piobcnt2k; i++) { - /* - * reasonable word count, just to init pbc - */ - writel(16, piobuf); - piobuf += pioincr; - } - - ipath_get_eeprom_info(dd); - if (dd->ipath_boardrev == 5) { - /* - * Later production QHT7040 has same changes as QHT7140, so - * can use GPIO interrupts. They have serial #'s starting - * with 128, rather than 112. - */ - if (dd->ipath_serial[0] == '1' && - dd->ipath_serial[1] == '2' && - dd->ipath_serial[2] == '8') - dd->ipath_flags |= IPATH_GPIO_INTR; - else { - ipath_dev_err(dd, "Unsupported InfiniPath board " - "(serial number %.16s)!\n", - dd->ipath_serial); - return 1; - } - } - - if (dd->ipath_minrev >= 4) { - /* Rev4+ reports extra errors via internal GPIO pins */ - dd->ipath_flags |= IPATH_GPIO_ERRINTRS; - dd->ipath_gpio_mask |= IPATH_GPIO_ERRINTR_MASK; - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, - dd->ipath_gpio_mask); - } - - return 0; -} - - -/** - * ipath_init_ht_get_base_info - set chip-specific flags for user code - * @dd: the infinipath device - * @kbase: ipath_base_info pointer - * - * We set the PCIE flag because the lower bandwidth on PCIe vs - * HyperTransport can affect some user packet algorithms. - */ -static int ipath_ht_get_base_info(struct ipath_portdata *pd, void *kbase) -{ - struct ipath_base_info *kinfo = kbase; - - kinfo->spi_runtime_flags |= IPATH_RUNTIME_HT | - IPATH_RUNTIME_PIO_REGSWAPPED; - - if (pd->port_dd->ipath_minrev < 4) - kinfo->spi_runtime_flags |= IPATH_RUNTIME_RCVHDR_COPY; - - return 0; -} - -static void ipath_ht_free_irq(struct ipath_devdata *dd) -{ - free_irq(dd->ipath_irq, dd); - ht_destroy_irq(dd->ipath_irq); - dd->ipath_irq = 0; - dd->ipath_intconfig = 0; -} - -static struct ipath_message_header * -ipath_ht_get_msgheader(struct ipath_devdata *dd, __le32 *rhf_addr) -{ - return (struct ipath_message_header *) - &rhf_addr[sizeof(u64) / sizeof(u32)]; -} - -static void ipath_ht_config_ports(struct ipath_devdata *dd, ushort cfgports) -{ - dd->ipath_portcnt = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt); - dd->ipath_p0_rcvegrcnt = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt); -} - -static void ipath_ht_read_counters(struct ipath_devdata *dd, - struct infinipath_counters *cntrs) -{ - cntrs->LBIntCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBIntCnt)); - cntrs->LBFlowStallCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBFlowStallCnt)); - cntrs->TxSDmaDescCnt = 0; - cntrs->TxUnsupVLErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnsupVLErrCnt)); - cntrs->TxDataPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDataPktCnt)); - cntrs->TxFlowPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowPktCnt)); - cntrs->TxDwordCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDwordCnt)); - cntrs->TxLenErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxLenErrCnt)); - cntrs->TxMaxMinLenErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxMaxMinLenErrCnt)); - cntrs->TxUnderrunCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnderrunCnt)); - cntrs->TxFlowStallCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowStallCnt)); - cntrs->TxDroppedPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDroppedPktCnt)); - cntrs->RxDroppedPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDroppedPktCnt)); - cntrs->RxDataPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDataPktCnt)); - cntrs->RxFlowPktCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowPktCnt)); - cntrs->RxDwordCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDwordCnt)); - cntrs->RxLenErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLenErrCnt)); - cntrs->RxMaxMinLenErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxMaxMinLenErrCnt)); - cntrs->RxICRCErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxICRCErrCnt)); - cntrs->RxVCRCErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxVCRCErrCnt)); - cntrs->RxFlowCtrlErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowCtrlErrCnt)); - cntrs->RxBadFormatCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBadFormatCnt)); - cntrs->RxLinkProblemCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLinkProblemCnt)); - cntrs->RxEBPCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxEBPCnt)); - cntrs->RxLPCRCErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLPCRCErrCnt)); - cntrs->RxBufOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBufOvflCnt)); - cntrs->RxTIDFullErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDFullErrCnt)); - cntrs->RxTIDValidErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDValidErrCnt)); - cntrs->RxPKeyMismatchCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxPKeyMismatchCnt)); - cntrs->RxP0HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt)); - cntrs->RxP1HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP1HdrEgrOvflCnt)); - cntrs->RxP2HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP2HdrEgrOvflCnt)); - cntrs->RxP3HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP3HdrEgrOvflCnt)); - cntrs->RxP4HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP4HdrEgrOvflCnt)); - cntrs->RxP5HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP5HdrEgrOvflCnt)); - cntrs->RxP6HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP6HdrEgrOvflCnt)); - cntrs->RxP7HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP7HdrEgrOvflCnt)); - cntrs->RxP8HdrEgrOvflCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP8HdrEgrOvflCnt)); - cntrs->RxP9HdrEgrOvflCnt = 0; - cntrs->RxP10HdrEgrOvflCnt = 0; - cntrs->RxP11HdrEgrOvflCnt = 0; - cntrs->RxP12HdrEgrOvflCnt = 0; - cntrs->RxP13HdrEgrOvflCnt = 0; - cntrs->RxP14HdrEgrOvflCnt = 0; - cntrs->RxP15HdrEgrOvflCnt = 0; - cntrs->RxP16HdrEgrOvflCnt = 0; - cntrs->IBStatusChangeCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBStatusChangeCnt)); - cntrs->IBLinkErrRecoveryCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt)); - cntrs->IBLinkDownedCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkDownedCnt)); - cntrs->IBSymbolErrCnt = - ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBSymbolErrCnt)); - cntrs->RxVL15DroppedPktCnt = 0; - cntrs->RxOtherLocalPhyErrCnt = 0; - cntrs->PcieRetryBufDiagQwordCnt = 0; - cntrs->ExcessBufferOvflCnt = dd->ipath_overrun_thresh_errs; - cntrs->LocalLinkIntegrityErrCnt = - (dd->ipath_flags & IPATH_GPIO_ERRINTRS) ? - dd->ipath_lli_errs : dd->ipath_lli_errors; - cntrs->RxVlErrCnt = 0; - cntrs->RxDlidFltrCnt = 0; -} - - -/* no interrupt fallback for these chips */ -static int ipath_ht_nointr_fallback(struct ipath_devdata *dd) -{ - return 0; -} - - -/* - * reset the XGXS (between serdes and IBC). Slightly less intrusive - * than resetting the IBC or external link state, and useful in some - * cases to cause some retraining. To do this right, we reset IBC - * as well. - */ -static void ipath_ht_xgxs_reset(struct ipath_devdata *dd) -{ - u64 val, prev_val; - - prev_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig); - val = prev_val | INFINIPATH_XGXS_RESET; - prev_val &= ~INFINIPATH_XGXS_RESET; /* be sure */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control & ~INFINIPATH_C_LINKENABLE); - ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val); - ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch); - ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, prev_val); - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control); -} - - -static int ipath_ht_get_ib_cfg(struct ipath_devdata *dd, int which) -{ - int ret; - - switch (which) { - case IPATH_IB_CFG_LWID: - ret = dd->ipath_link_width_active; - break; - case IPATH_IB_CFG_SPD: - ret = dd->ipath_link_speed_active; - break; - case IPATH_IB_CFG_LWID_ENB: - ret = dd->ipath_link_width_enabled; - break; - case IPATH_IB_CFG_SPD_ENB: - ret = dd->ipath_link_speed_enabled; - break; - default: - ret = -ENOTSUPP; - break; - } - return ret; -} - - -/* we assume range checking is already done, if needed */ -static int ipath_ht_set_ib_cfg(struct ipath_devdata *dd, int which, u32 val) -{ - int ret = 0; - - if (which == IPATH_IB_CFG_LWID_ENB) - dd->ipath_link_width_enabled = val; - else if (which == IPATH_IB_CFG_SPD_ENB) - dd->ipath_link_speed_enabled = val; - else - ret = -ENOTSUPP; - return ret; -} - - -static void ipath_ht_config_jint(struct ipath_devdata *dd, u16 a, u16 b) -{ -} - - -static int ipath_ht_ib_updown(struct ipath_devdata *dd, int ibup, u64 ibcs) -{ - ipath_setup_ht_setextled(dd, ipath_ib_linkstate(dd, ibcs), - ipath_ib_linktrstate(dd, ibcs)); - return 0; -} - - -/** - * ipath_init_iba6110_funcs - set up the chip-specific function pointers - * @dd: the infinipath device - * - * This is global, and is called directly at init to set up the - * chip-specific function pointers for later use. - */ -void ipath_init_iba6110_funcs(struct ipath_devdata *dd) -{ - dd->ipath_f_intrsetup = ipath_ht_intconfig; - dd->ipath_f_bus = ipath_setup_ht_config; - dd->ipath_f_reset = ipath_setup_ht_reset; - dd->ipath_f_get_boardname = ipath_ht_boardname; - dd->ipath_f_init_hwerrors = ipath_ht_init_hwerrors; - dd->ipath_f_early_init = ipath_ht_early_init; - dd->ipath_f_handle_hwerrors = ipath_ht_handle_hwerrors; - dd->ipath_f_quiet_serdes = ipath_ht_quiet_serdes; - dd->ipath_f_bringup_serdes = ipath_ht_bringup_serdes; - dd->ipath_f_clear_tids = ipath_ht_clear_tids; - dd->ipath_f_put_tid = ipath_ht_put_tid; - dd->ipath_f_cleanup = ipath_setup_ht_cleanup; - dd->ipath_f_setextled = ipath_setup_ht_setextled; - dd->ipath_f_get_base_info = ipath_ht_get_base_info; - dd->ipath_f_free_irq = ipath_ht_free_irq; - dd->ipath_f_tidtemplate = ipath_ht_tidtemplate; - dd->ipath_f_intr_fallback = ipath_ht_nointr_fallback; - dd->ipath_f_get_msgheader = ipath_ht_get_msgheader; - dd->ipath_f_config_ports = ipath_ht_config_ports; - dd->ipath_f_read_counters = ipath_ht_read_counters; - dd->ipath_f_xgxs_reset = ipath_ht_xgxs_reset; - dd->ipath_f_get_ib_cfg = ipath_ht_get_ib_cfg; - dd->ipath_f_set_ib_cfg = ipath_ht_set_ib_cfg; - dd->ipath_f_config_jint = ipath_ht_config_jint; - dd->ipath_f_ib_updown = ipath_ht_ib_updown; - - /* - * initialize chip-specific variables - */ - ipath_init_ht_variables(dd); -} diff --git a/drivers/staging/rdma/ipath/ipath_init_chip.c b/drivers/staging/rdma/ipath/ipath_init_chip.c deleted file mode 100644 index a5eea199f733..000000000000 --- a/drivers/staging/rdma/ipath/ipath_init_chip.c +++ /dev/null @@ -1,1062 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_common.h" - -/* - * min buffers we want to have per port, after driver - */ -#define IPATH_MIN_USER_PORT_BUFCNT 7 - -/* - * Number of ports we are configured to use (to allow for more pio - * buffers per port, etc.) Zero means use chip value. - */ -static ushort ipath_cfgports; - -module_param_named(cfgports, ipath_cfgports, ushort, S_IRUGO); -MODULE_PARM_DESC(cfgports, "Set max number of ports to use"); - -/* - * Number of buffers reserved for driver (verbs and layered drivers.) - * Initialized based on number of PIO buffers if not set via module interface. - * The problem with this is that it's global, but we'll use different - * numbers for different chip types. - */ -static ushort ipath_kpiobufs; - -static int ipath_set_kpiobufs(const char *val, struct kernel_param *kp); - -module_param_call(kpiobufs, ipath_set_kpiobufs, param_get_ushort, - &ipath_kpiobufs, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(kpiobufs, "Set number of PIO buffers for driver"); - -/** - * create_port0_egr - allocate the eager TID buffers - * @dd: the infinipath device - * - * This code is now quite different for user and kernel, because - * the kernel uses skb's, for the accelerated network performance. - * This is the kernel (port0) version. - * - * Allocate the eager TID buffers and program them into infinipath. - * We use the network layer alloc_skb() allocator to allocate the - * memory, and either use the buffers as is for things like verbs - * packets, or pass the buffers up to the ipath layered driver and - * thence the network layer, replacing them as we do so (see - * ipath_rcv_layer()). - */ -static int create_port0_egr(struct ipath_devdata *dd) -{ - unsigned e, egrcnt; - struct ipath_skbinfo *skbinfo; - int ret; - - egrcnt = dd->ipath_p0_rcvegrcnt; - - skbinfo = vmalloc(sizeof(*dd->ipath_port0_skbinfo) * egrcnt); - if (skbinfo == NULL) { - ipath_dev_err(dd, "allocation error for eager TID " - "skb array\n"); - ret = -ENOMEM; - goto bail; - } - for (e = 0; e < egrcnt; e++) { - /* - * This is a bit tricky in that we allocate extra - * space for 2 bytes of the 14 byte ethernet header. - * These two bytes are passed in the ipath header so - * the rest of the data is word aligned. We allocate - * 4 bytes so that the data buffer stays word aligned. - * See ipath_kreceive() for more details. - */ - skbinfo[e].skb = ipath_alloc_skb(dd, GFP_KERNEL); - if (!skbinfo[e].skb) { - ipath_dev_err(dd, "SKB allocation error for " - "eager TID %u\n", e); - while (e != 0) - dev_kfree_skb(skbinfo[--e].skb); - vfree(skbinfo); - ret = -ENOMEM; - goto bail; - } - } - /* - * After loop above, so we can test non-NULL to see if ready - * to use at receive, etc. - */ - dd->ipath_port0_skbinfo = skbinfo; - - for (e = 0; e < egrcnt; e++) { - dd->ipath_port0_skbinfo[e].phys = - ipath_map_single(dd->pcidev, - dd->ipath_port0_skbinfo[e].skb->data, - dd->ipath_ibmaxlen, PCI_DMA_FROMDEVICE); - dd->ipath_f_put_tid(dd, e + (u64 __iomem *) - ((char __iomem *) dd->ipath_kregbase + - dd->ipath_rcvegrbase), - RCVHQ_RCV_TYPE_EAGER, - dd->ipath_port0_skbinfo[e].phys); - } - - ret = 0; - -bail: - return ret; -} - -static int bringup_link(struct ipath_devdata *dd) -{ - u64 val, ibc; - int ret = 0; - - /* hold IBC in reset */ - dd->ipath_control &= ~INFINIPATH_C_LINKENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control); - - /* - * set initial max size pkt IBC will send, including ICRC; it's the - * PIO buffer size in dwords, less 1; also see ipath_set_mtu() - */ - val = (dd->ipath_ibmaxlen >> 2) + 1; - ibc = val << dd->ibcc_mpl_shift; - - /* flowcontrolwatermark is in units of KBytes */ - ibc |= 0x5ULL << INFINIPATH_IBCC_FLOWCTRLWATERMARK_SHIFT; - /* - * How often flowctrl sent. More or less in usecs; balance against - * watermark value, so that in theory senders always get a flow - * control update in time to not let the IB link go idle. - */ - ibc |= 0x3ULL << INFINIPATH_IBCC_FLOWCTRLPERIOD_SHIFT; - /* max error tolerance */ - ibc |= 0xfULL << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; - /* use "real" buffer space for */ - ibc |= 4ULL << INFINIPATH_IBCC_CREDITSCALE_SHIFT; - /* IB credit flow control. */ - ibc |= 0xfULL << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; - /* initially come up waiting for TS1, without sending anything. */ - dd->ipath_ibcctrl = ibc; - /* - * Want to start out with both LINKCMD and LINKINITCMD in NOP - * (0 and 0). Don't put linkinitcmd in ipath_ibcctrl, want that - * to stay a NOP. Flag that we are disabled, for the (unlikely) - * case that some recovery path is trying to bring the link up - * before we are ready. - */ - ibc |= INFINIPATH_IBCC_LINKINITCMD_DISABLE << - INFINIPATH_IBCC_LINKINITCMD_SHIFT; - dd->ipath_flags |= IPATH_IB_LINK_DISABLED; - ipath_cdbg(VERBOSE, "Writing 0x%llx to ibcctrl\n", - (unsigned long long) ibc); - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, ibc); - - // be sure chip saw it - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - - ret = dd->ipath_f_bringup_serdes(dd); - - if (ret) - dev_info(&dd->pcidev->dev, "Could not initialize SerDes, " - "not usable\n"); - else { - /* enable IBC */ - dd->ipath_control |= INFINIPATH_C_LINKENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control); - } - - return ret; -} - -static struct ipath_portdata *create_portdata0(struct ipath_devdata *dd) -{ - struct ipath_portdata *pd; - - pd = kzalloc(sizeof(*pd), GFP_KERNEL); - if (pd) { - pd->port_dd = dd; - pd->port_cnt = 1; - /* The port 0 pkey table is used by the layer interface. */ - pd->port_pkeys[0] = IPATH_DEFAULT_P_KEY; - pd->port_seq_cnt = 1; - } - return pd; -} - -static int init_chip_first(struct ipath_devdata *dd) -{ - struct ipath_portdata *pd; - int ret = 0; - u64 val; - - spin_lock_init(&dd->ipath_kernel_tid_lock); - spin_lock_init(&dd->ipath_user_tid_lock); - spin_lock_init(&dd->ipath_sendctrl_lock); - spin_lock_init(&dd->ipath_uctxt_lock); - spin_lock_init(&dd->ipath_sdma_lock); - spin_lock_init(&dd->ipath_gpio_lock); - spin_lock_init(&dd->ipath_eep_st_lock); - spin_lock_init(&dd->ipath_sdepb_lock); - mutex_init(&dd->ipath_eep_lock); - - /* - * skip cfgports stuff because we are not allocating memory, - * and we don't want problems if the portcnt changed due to - * cfgports. We do still check and report a difference, if - * not same (should be impossible). - */ - dd->ipath_f_config_ports(dd, ipath_cfgports); - if (!ipath_cfgports) - dd->ipath_cfgports = dd->ipath_portcnt; - else if (ipath_cfgports <= dd->ipath_portcnt) { - dd->ipath_cfgports = ipath_cfgports; - ipath_dbg("Configured to use %u ports out of %u in chip\n", - dd->ipath_cfgports, ipath_read_kreg32(dd, - dd->ipath_kregs->kr_portcnt)); - } else { - dd->ipath_cfgports = dd->ipath_portcnt; - ipath_dbg("Tried to configured to use %u ports; chip " - "only supports %u\n", ipath_cfgports, - ipath_read_kreg32(dd, - dd->ipath_kregs->kr_portcnt)); - } - /* - * Allocate full portcnt array, rather than just cfgports, because - * cleanup iterates across all possible ports. - */ - dd->ipath_pd = kcalloc(dd->ipath_portcnt, sizeof(*dd->ipath_pd), - GFP_KERNEL); - - if (!dd->ipath_pd) { - ipath_dev_err(dd, "Unable to allocate portdata array, " - "failing\n"); - ret = -ENOMEM; - goto done; - } - - pd = create_portdata0(dd); - if (!pd) { - ipath_dev_err(dd, "Unable to allocate portdata for port " - "0, failing\n"); - ret = -ENOMEM; - goto done; - } - dd->ipath_pd[0] = pd; - - dd->ipath_rcvtidcnt = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidcnt); - dd->ipath_rcvtidbase = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidbase); - dd->ipath_rcvegrcnt = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt); - dd->ipath_rcvegrbase = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrbase); - dd->ipath_palign = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_pagealign); - dd->ipath_piobufbase = - ipath_read_kreg64(dd, dd->ipath_kregs->kr_sendpiobufbase); - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_sendpiosize); - dd->ipath_piosize2k = val & ~0U; - dd->ipath_piosize4k = val >> 32; - if (dd->ipath_piosize4k == 0 && ipath_mtu4096) - ipath_mtu4096 = 0; /* 4KB not supported by this chip */ - dd->ipath_ibmtu = ipath_mtu4096 ? 4096 : 2048; - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_sendpiobufcnt); - dd->ipath_piobcnt2k = val & ~0U; - dd->ipath_piobcnt4k = val >> 32; - dd->ipath_pio2kbase = - (u32 __iomem *) (((char __iomem *) dd->ipath_kregbase) + - (dd->ipath_piobufbase & 0xffffffff)); - if (dd->ipath_piobcnt4k) { - dd->ipath_pio4kbase = (u32 __iomem *) - (((char __iomem *) dd->ipath_kregbase) + - (dd->ipath_piobufbase >> 32)); - /* - * 4K buffers take 2 pages; we use roundup just to be - * paranoid; we calculate it once here, rather than on - * ever buf allocate - */ - dd->ipath_4kalign = ALIGN(dd->ipath_piosize4k, - dd->ipath_palign); - ipath_dbg("%u 2k(%x) piobufs @ %p, %u 4k(%x) @ %p " - "(%x aligned)\n", - dd->ipath_piobcnt2k, dd->ipath_piosize2k, - dd->ipath_pio2kbase, dd->ipath_piobcnt4k, - dd->ipath_piosize4k, dd->ipath_pio4kbase, - dd->ipath_4kalign); - } else { - ipath_dbg("%u 2k piobufs @ %p\n", - dd->ipath_piobcnt2k, dd->ipath_pio2kbase); - } -done: - return ret; -} - -/** - * init_chip_reset - re-initialize after a reset, or enable - * @dd: the infinipath device - * - * sanity check at least some of the values after reset, and - * ensure no receive or transmit (explicitly, in case reset - * failed - */ -static int init_chip_reset(struct ipath_devdata *dd) -{ - u32 rtmp; - int i; - unsigned long flags; - - /* - * ensure chip does no sends or receives, tail updates, or - * pioavail updates while we re-initialize - */ - dd->ipath_rcvctrl &= ~(1ULL << dd->ipath_r_tailupd_shift); - for (i = 0; i < dd->ipath_portcnt; i++) { - clear_bit(dd->ipath_r_portenable_shift + i, - &dd->ipath_rcvctrl); - clear_bit(dd->ipath_r_intravail_shift + i, - &dd->ipath_rcvctrl); - } - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl = 0U; /* no sdma, etc */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, 0ULL); - - rtmp = ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidcnt); - if (rtmp != dd->ipath_rcvtidcnt) - dev_info(&dd->pcidev->dev, "tidcnt was %u before " - "reset, now %u, using original\n", - dd->ipath_rcvtidcnt, rtmp); - rtmp = ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidbase); - if (rtmp != dd->ipath_rcvtidbase) - dev_info(&dd->pcidev->dev, "tidbase was %u before " - "reset, now %u, using original\n", - dd->ipath_rcvtidbase, rtmp); - rtmp = ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt); - if (rtmp != dd->ipath_rcvegrcnt) - dev_info(&dd->pcidev->dev, "egrcnt was %u before " - "reset, now %u, using original\n", - dd->ipath_rcvegrcnt, rtmp); - rtmp = ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrbase); - if (rtmp != dd->ipath_rcvegrbase) - dev_info(&dd->pcidev->dev, "egrbase was %u before " - "reset, now %u, using original\n", - dd->ipath_rcvegrbase, rtmp); - - return 0; -} - -static int init_pioavailregs(struct ipath_devdata *dd) -{ - int ret; - - dd->ipath_pioavailregs_dma = dma_alloc_coherent( - &dd->pcidev->dev, PAGE_SIZE, &dd->ipath_pioavailregs_phys, - GFP_KERNEL); - if (!dd->ipath_pioavailregs_dma) { - ipath_dev_err(dd, "failed to allocate PIOavail reg area " - "in memory\n"); - ret = -ENOMEM; - goto done; - } - - /* - * we really want L2 cache aligned, but for current CPUs of - * interest, they are the same. - */ - dd->ipath_statusp = (u64 *) - ((char *)dd->ipath_pioavailregs_dma + - ((2 * L1_CACHE_BYTES + - dd->ipath_pioavregs * sizeof(u64)) & ~L1_CACHE_BYTES)); - /* copy the current value now that it's really allocated */ - *dd->ipath_statusp = dd->_ipath_status; - /* - * setup buffer to hold freeze msg, accessible to apps, - * following statusp - */ - dd->ipath_freezemsg = (char *)&dd->ipath_statusp[1]; - /* and its length */ - dd->ipath_freezelen = L1_CACHE_BYTES - sizeof(dd->ipath_statusp[0]); - - ret = 0; - -done: - return ret; -} - -/** - * init_shadow_tids - allocate the shadow TID array - * @dd: the infinipath device - * - * allocate the shadow TID array, so we can ipath_munlock previous - * entries. It may make more sense to move the pageshadow to the - * port data structure, so we only allocate memory for ports actually - * in use, since we at 8k per port, now. - */ -static void init_shadow_tids(struct ipath_devdata *dd) -{ - struct page **pages; - dma_addr_t *addrs; - - pages = vzalloc(dd->ipath_cfgports * dd->ipath_rcvtidcnt * - sizeof(struct page *)); - if (!pages) { - ipath_dev_err(dd, "failed to allocate shadow page * " - "array, no expected sends!\n"); - dd->ipath_pageshadow = NULL; - return; - } - - addrs = vmalloc(dd->ipath_cfgports * dd->ipath_rcvtidcnt * - sizeof(dma_addr_t)); - if (!addrs) { - ipath_dev_err(dd, "failed to allocate shadow dma handle " - "array, no expected sends!\n"); - vfree(pages); - dd->ipath_pageshadow = NULL; - return; - } - - dd->ipath_pageshadow = pages; - dd->ipath_physshadow = addrs; -} - -static void enable_chip(struct ipath_devdata *dd, int reinit) -{ - u32 val; - u64 rcvmask; - unsigned long flags; - int i; - - if (!reinit) - init_waitqueue_head(&ipath_state_wait); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - /* Enable PIO send, and update of PIOavail regs to memory. */ - dd->ipath_sendctrl = INFINIPATH_S_PIOENABLE | - INFINIPATH_S_PIOBUFAVAILUPD; - - /* - * Set the PIO avail update threshold to host memory - * on chips that support it. - */ - if (dd->ipath_pioupd_thresh) - dd->ipath_sendctrl |= dd->ipath_pioupd_thresh - << INFINIPATH_S_UPDTHRESH_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* - * Enable kernel ports' receive and receive interrupt. - * Other ports done as user opens and inits them. - */ - rcvmask = 1ULL; - dd->ipath_rcvctrl |= (rcvmask << dd->ipath_r_portenable_shift) | - (rcvmask << dd->ipath_r_intravail_shift); - if (!(dd->ipath_flags & IPATH_NODMA_RTAIL)) - dd->ipath_rcvctrl |= (1ULL << dd->ipath_r_tailupd_shift); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - - /* - * now ready for use. this should be cleared whenever we - * detect a reset, or initiate one. - */ - dd->ipath_flags |= IPATH_INITTED; - - /* - * Init our shadow copies of head from tail values, - * and write head values to match. - */ - val = ipath_read_ureg32(dd, ur_rcvegrindextail, 0); - ipath_write_ureg(dd, ur_rcvegrindexhead, val, 0); - - /* Initialize so we interrupt on next packet received */ - ipath_write_ureg(dd, ur_rcvhdrhead, - dd->ipath_rhdrhead_intr_off | - dd->ipath_pd[0]->port_head, 0); - - /* - * by now pioavail updates to memory should have occurred, so - * copy them into our working/shadow registers; this is in - * case something went wrong with abort, but mostly to get the - * initial values of the generation bit correct. - */ - for (i = 0; i < dd->ipath_pioavregs; i++) { - __le64 pioavail; - - /* - * Chip Errata bug 6641; even and odd qwords>3 are swapped. - */ - if (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) - pioavail = dd->ipath_pioavailregs_dma[i ^ 1]; - else - pioavail = dd->ipath_pioavailregs_dma[i]; - /* - * don't need to worry about ipath_pioavailkernel here - * because we will call ipath_chg_pioavailkernel() later - * in initialization, to busy out buffers as needed - */ - dd->ipath_pioavailshadow[i] = le64_to_cpu(pioavail); - } - /* can get counters, stats, etc. */ - dd->ipath_flags |= IPATH_PRESENT; -} - -static int init_housekeeping(struct ipath_devdata *dd, int reinit) -{ - char boardn[40]; - int ret = 0; - - /* - * have to clear shadow copies of registers at init that are - * not otherwise set here, or all kinds of bizarre things - * happen with driver on chip reset - */ - dd->ipath_rcvhdrsize = 0; - - /* - * Don't clear ipath_flags as 8bit mode was set before - * entering this func. However, we do set the linkstate to - * unknown, so we can watch for a transition. - * PRESENT is set because we want register reads to work, - * and the kernel infrastructure saw it in config space; - * We clear it if we have failures. - */ - dd->ipath_flags |= IPATH_LINKUNK | IPATH_PRESENT; - dd->ipath_flags &= ~(IPATH_LINKACTIVE | IPATH_LINKARMED | - IPATH_LINKDOWN | IPATH_LINKINIT); - - ipath_cdbg(VERBOSE, "Try to read spc chip revision\n"); - dd->ipath_revision = - ipath_read_kreg64(dd, dd->ipath_kregs->kr_revision); - - /* - * set up fundamental info we need to use the chip; we assume - * if the revision reg and these regs are OK, we don't need to - * special case the rest - */ - dd->ipath_sregbase = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_sendregbase); - dd->ipath_cregbase = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_counterregbase); - dd->ipath_uregbase = - ipath_read_kreg32(dd, dd->ipath_kregs->kr_userregbase); - ipath_cdbg(VERBOSE, "ipath_kregbase %p, sendbase %x usrbase %x, " - "cntrbase %x\n", dd->ipath_kregbase, dd->ipath_sregbase, - dd->ipath_uregbase, dd->ipath_cregbase); - if ((dd->ipath_revision & 0xffffffff) == 0xffffffff - || (dd->ipath_sregbase & 0xffffffff) == 0xffffffff - || (dd->ipath_cregbase & 0xffffffff) == 0xffffffff - || (dd->ipath_uregbase & 0xffffffff) == 0xffffffff) { - ipath_dev_err(dd, "Register read failures from chip, " - "giving up initialization\n"); - dd->ipath_flags &= ~IPATH_PRESENT; - ret = -ENODEV; - goto done; - } - - - /* clear diagctrl register, in case diags were running and crashed */ - ipath_write_kreg (dd, dd->ipath_kregs->kr_hwdiagctrl, 0); - - /* clear the initial reset flag, in case first driver load */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, - INFINIPATH_E_RESET); - - ipath_cdbg(VERBOSE, "Revision %llx (PCI %x)\n", - (unsigned long long) dd->ipath_revision, - dd->ipath_pcirev); - - if (((dd->ipath_revision >> INFINIPATH_R_SOFTWARE_SHIFT) & - INFINIPATH_R_SOFTWARE_MASK) != IPATH_CHIP_SWVERSION) { - ipath_dev_err(dd, "Driver only handles version %d, " - "chip swversion is %d (%llx), failng\n", - IPATH_CHIP_SWVERSION, - (int)(dd->ipath_revision >> - INFINIPATH_R_SOFTWARE_SHIFT) & - INFINIPATH_R_SOFTWARE_MASK, - (unsigned long long) dd->ipath_revision); - ret = -ENOSYS; - goto done; - } - dd->ipath_majrev = (u8) ((dd->ipath_revision >> - INFINIPATH_R_CHIPREVMAJOR_SHIFT) & - INFINIPATH_R_CHIPREVMAJOR_MASK); - dd->ipath_minrev = (u8) ((dd->ipath_revision >> - INFINIPATH_R_CHIPREVMINOR_SHIFT) & - INFINIPATH_R_CHIPREVMINOR_MASK); - dd->ipath_boardrev = (u8) ((dd->ipath_revision >> - INFINIPATH_R_BOARDID_SHIFT) & - INFINIPATH_R_BOARDID_MASK); - - ret = dd->ipath_f_get_boardname(dd, boardn, sizeof boardn); - - snprintf(dd->ipath_boardversion, sizeof(dd->ipath_boardversion), - "ChipABI %u.%u, %s, InfiniPath%u %u.%u, PCI %u, " - "SW Compat %u\n", - IPATH_CHIP_VERS_MAJ, IPATH_CHIP_VERS_MIN, boardn, - (unsigned)(dd->ipath_revision >> INFINIPATH_R_ARCH_SHIFT) & - INFINIPATH_R_ARCH_MASK, - dd->ipath_majrev, dd->ipath_minrev, dd->ipath_pcirev, - (unsigned)(dd->ipath_revision >> - INFINIPATH_R_SOFTWARE_SHIFT) & - INFINIPATH_R_SOFTWARE_MASK); - - ipath_dbg("%s", dd->ipath_boardversion); - - if (ret) - goto done; - - if (reinit) - ret = init_chip_reset(dd); - else - ret = init_chip_first(dd); - -done: - return ret; -} - -static void verify_interrupt(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *) opaque; - - if (!dd) - return; /* being torn down */ - - /* - * If we don't have any interrupts, let the user know and - * don't bother checking again. - */ - if (dd->ipath_int_counter == 0) { - if (!dd->ipath_f_intr_fallback(dd)) - dev_err(&dd->pcidev->dev, "No interrupts detected, " - "not usable.\n"); - else /* re-arm the timer to see if fallback works */ - mod_timer(&dd->ipath_intrchk_timer, jiffies + HZ/2); - } else - ipath_cdbg(VERBOSE, "%u interrupts at timer check\n", - dd->ipath_int_counter); -} - -/** - * ipath_init_chip - do the actual initialization sequence on the chip - * @dd: the infinipath device - * @reinit: reinitializing, so don't allocate new memory - * - * Do the actual initialization sequence on the chip. This is done - * both from the init routine called from the PCI infrastructure, and - * when we reset the chip, or detect that it was reset internally, - * or it's administratively re-enabled. - * - * Memory allocation here and in called routines is only done in - * the first case (reinit == 0). We have to be careful, because even - * without memory allocation, we need to re-write all the chip registers - * TIDs, etc. after the reset or enable has completed. - */ -int ipath_init_chip(struct ipath_devdata *dd, int reinit) -{ - int ret = 0; - u32 kpiobufs, defkbufs; - u32 piobufs, uports; - u64 val; - struct ipath_portdata *pd; - gfp_t gfp_flags = GFP_USER | __GFP_COMP; - - ret = init_housekeeping(dd, reinit); - if (ret) - goto done; - - /* - * We could bump this to allow for full rcvegrcnt + rcvtidcnt, - * but then it no longer nicely fits power of two, and since - * we now use routines that backend onto __get_free_pages, the - * rest would be wasted. - */ - dd->ipath_rcvhdrcnt = max(dd->ipath_p0_rcvegrcnt, dd->ipath_rcvegrcnt); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvhdrcnt, - dd->ipath_rcvhdrcnt); - - /* - * Set up the shadow copies of the piobufavail registers, - * which we compare against the chip registers for now, and - * the in memory DMA'ed copies of the registers. This has to - * be done early, before we calculate lastport, etc. - */ - piobufs = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; - /* - * calc number of pioavail registers, and save it; we have 2 - * bits per buffer. - */ - dd->ipath_pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) - / (sizeof(u64) * BITS_PER_BYTE / 2); - uports = dd->ipath_cfgports ? dd->ipath_cfgports - 1 : 0; - if (piobufs > 144) - defkbufs = 32 + dd->ipath_pioreserved; - else - defkbufs = 16 + dd->ipath_pioreserved; - - if (ipath_kpiobufs && (ipath_kpiobufs + - (uports * IPATH_MIN_USER_PORT_BUFCNT)) > piobufs) { - int i = (int) piobufs - - (int) (uports * IPATH_MIN_USER_PORT_BUFCNT); - if (i < 1) - i = 1; - dev_info(&dd->pcidev->dev, "Allocating %d PIO bufs of " - "%d for kernel leaves too few for %d user ports " - "(%d each); using %u\n", ipath_kpiobufs, - piobufs, uports, IPATH_MIN_USER_PORT_BUFCNT, i); - /* - * shouldn't change ipath_kpiobufs, because could be - * different for different devices... - */ - kpiobufs = i; - } else if (ipath_kpiobufs) - kpiobufs = ipath_kpiobufs; - else - kpiobufs = defkbufs; - dd->ipath_lastport_piobuf = piobufs - kpiobufs; - dd->ipath_pbufsport = - uports ? dd->ipath_lastport_piobuf / uports : 0; - /* if not an even divisor, some user ports get extra buffers */ - dd->ipath_ports_extrabuf = dd->ipath_lastport_piobuf - - (dd->ipath_pbufsport * uports); - if (dd->ipath_ports_extrabuf) - ipath_dbg("%u pbufs/port leaves some unused, add 1 buffer to " - "ports <= %u\n", dd->ipath_pbufsport, - dd->ipath_ports_extrabuf); - dd->ipath_lastpioindex = 0; - dd->ipath_lastpioindexl = dd->ipath_piobcnt2k; - /* ipath_pioavailshadow initialized earlier */ - ipath_cdbg(VERBOSE, "%d PIO bufs for kernel out of %d total %u " - "each for %u user ports\n", kpiobufs, - piobufs, dd->ipath_pbufsport, uports); - ret = dd->ipath_f_early_init(dd); - if (ret) { - ipath_dev_err(dd, "Early initialization failure\n"); - goto done; - } - - /* - * Early_init sets rcvhdrentsize and rcvhdrsize, so this must be - * done after early_init. - */ - dd->ipath_hdrqlast = - dd->ipath_rcvhdrentsize * (dd->ipath_rcvhdrcnt - 1); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvhdrentsize, - dd->ipath_rcvhdrentsize); - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvhdrsize, - dd->ipath_rcvhdrsize); - - if (!reinit) { - ret = init_pioavailregs(dd); - init_shadow_tids(dd); - if (ret) - goto done; - } - - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendpioavailaddr, - dd->ipath_pioavailregs_phys); - - /* - * this is to detect s/w errors, which the h/w works around by - * ignoring the low 6 bits of address, if it wasn't aligned. - */ - val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_sendpioavailaddr); - if (val != dd->ipath_pioavailregs_phys) { - ipath_dev_err(dd, "Catastrophic software error, " - "SendPIOAvailAddr written as %lx, " - "read back as %llx\n", - (unsigned long) dd->ipath_pioavailregs_phys, - (unsigned long long) val); - ret = -EINVAL; - goto done; - } - - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvbthqp, IPATH_KD_QP); - - /* - * make sure we are not in freeze, and PIO send enabled, so - * writes to pbc happen - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, 0ULL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, - ~0ULL&~INFINIPATH_HWE_MEMBISTFAILED); - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, 0ULL); - - /* - * before error clears, since we expect serdes pll errors during - * this, the first time after reset - */ - if (bringup_link(dd)) { - dev_info(&dd->pcidev->dev, "Failed to bringup IB link\n"); - ret = -ENETDOWN; - goto done; - } - - /* - * clear any "expected" hwerrs from reset and/or initialization - * clear any that aren't enabled (at least this once), and then - * set the enable mask - */ - dd->ipath_f_init_hwerrors(dd); - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, - ~0ULL&~INFINIPATH_HWE_MEMBISTFAILED); - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask, - dd->ipath_hwerrmask); - - /* clear all */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, -1LL); - /* enable errors that are masked, at least this first time. */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - ~dd->ipath_maskederrs); - dd->ipath_maskederrs = 0; /* don't re-enable ignored in timer */ - dd->ipath_errormask = - ipath_read_kreg64(dd, dd->ipath_kregs->kr_errormask); - /* clear any interrupts up to this point (ints still not enabled) */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, -1LL); - - dd->ipath_f_tidtemplate(dd); - - /* - * Set up the port 0 (kernel) rcvhdr q and egr TIDs. If doing - * re-init, the simplest way to handle this is to free - * existing, and re-allocate. - * Need to re-create rest of port 0 portdata as well. - */ - pd = dd->ipath_pd[0]; - if (reinit) { - struct ipath_portdata *npd; - - /* - * Alloc and init new ipath_portdata for port0, - * Then free old pd. Could lead to fragmentation, but also - * makes later support for hot-swap easier. - */ - npd = create_portdata0(dd); - if (npd) { - ipath_free_pddata(dd, pd); - dd->ipath_pd[0] = npd; - pd = npd; - } else { - ipath_dev_err(dd, "Unable to allocate portdata" - " for port 0, failing\n"); - ret = -ENOMEM; - goto done; - } - } - ret = ipath_create_rcvhdrq(dd, pd); - if (!ret) - ret = create_port0_egr(dd); - if (ret) { - ipath_dev_err(dd, "failed to allocate kernel port's " - "rcvhdrq and/or egr bufs\n"); - goto done; - } else { - enable_chip(dd, reinit); - } - - /* after enable_chip, so pioavailshadow setup */ - ipath_chg_pioavailkernel(dd, 0, piobufs, 1); - - /* - * Cancel any possible active sends from early driver load. - * Follows early_init because some chips have to initialize - * PIO buffers in early_init to avoid false parity errors. - * After enable and ipath_chg_pioavailkernel so we can safely - * enable pioavail updates and PIOENABLE; packets are now - * ready to go out. - */ - ipath_cancel_sends(dd, 1); - - if (!reinit) { - /* - * Used when we close a port, for DMA already in flight - * at close. - */ - dd->ipath_dummy_hdrq = dma_alloc_coherent( - &dd->pcidev->dev, dd->ipath_pd[0]->port_rcvhdrq_size, - &dd->ipath_dummy_hdrq_phys, - gfp_flags); - if (!dd->ipath_dummy_hdrq) { - dev_info(&dd->pcidev->dev, - "Couldn't allocate 0x%lx bytes for dummy hdrq\n", - dd->ipath_pd[0]->port_rcvhdrq_size); - /* fallback to just 0'ing */ - dd->ipath_dummy_hdrq_phys = 0UL; - } - } - - /* - * cause retrigger of pending interrupts ignored during init, - * even if we had errors - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, 0ULL); - - if (!dd->ipath_stats_timer_active) { - /* - * first init, or after an admin disable/enable - * set up stats retrieval timer, even if we had errors - * in last portion of setup - */ - setup_timer(&dd->ipath_stats_timer, ipath_get_faststats, - (unsigned long)dd); - /* every 5 seconds; */ - dd->ipath_stats_timer.expires = jiffies + 5 * HZ; - /* takes ~16 seconds to overflow at full IB 4x bandwdith */ - add_timer(&dd->ipath_stats_timer); - dd->ipath_stats_timer_active = 1; - } - - /* Set up SendDMA if chip supports it */ - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - ret = setup_sdma(dd); - - /* Set up HoL state */ - setup_timer(&dd->ipath_hol_timer, ipath_hol_event, (unsigned long)dd); - - dd->ipath_hol_state = IPATH_HOL_UP; - -done: - if (!ret) { - *dd->ipath_statusp |= IPATH_STATUS_CHIP_PRESENT; - if (!dd->ipath_f_intrsetup(dd)) { - /* now we can enable all interrupts from the chip */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, - -1LL); - /* force re-interrupt of any pending interrupts. */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, - 0ULL); - /* chip is usable; mark it as initialized */ - *dd->ipath_statusp |= IPATH_STATUS_INITTED; - - /* - * setup to verify we get an interrupt, and fallback - * to an alternate if necessary and possible - */ - if (!reinit) { - setup_timer(&dd->ipath_intrchk_timer, - verify_interrupt, - (unsigned long)dd); - } - dd->ipath_intrchk_timer.expires = jiffies + HZ/2; - add_timer(&dd->ipath_intrchk_timer); - } else - ipath_dev_err(dd, "No interrupts enabled, couldn't " - "setup interrupt address\n"); - - if (dd->ipath_cfgports > ipath_stats.sps_nports) - /* - * sps_nports is a global, so, we set it to - * the highest number of ports of any of the - * chips we find; we never decrement it, at - * least for now. Since this might have changed - * over disable/enable or prior to reset, always - * do the check and potentially adjust. - */ - ipath_stats.sps_nports = dd->ipath_cfgports; - } else - ipath_dbg("Failed (%d) to initialize chip\n", ret); - - /* if ret is non-zero, we probably should do some cleanup - here... */ - return ret; -} - -static int ipath_set_kpiobufs(const char *str, struct kernel_param *kp) -{ - struct ipath_devdata *dd; - unsigned long flags; - unsigned short val; - int ret; - - ret = ipath_parse_ushort(str, &val); - - spin_lock_irqsave(&ipath_devs_lock, flags); - - if (ret < 0) - goto bail; - - if (val == 0) { - ret = -EINVAL; - goto bail; - } - - list_for_each_entry(dd, &ipath_dev_list, ipath_list) { - if (dd->ipath_kregbase) - continue; - if (val > (dd->ipath_piobcnt2k + dd->ipath_piobcnt4k - - (dd->ipath_cfgports * - IPATH_MIN_USER_PORT_BUFCNT))) - { - ipath_dev_err( - dd, - "Allocating %d PIO bufs for kernel leaves " - "too few for %d user ports (%d each)\n", - val, dd->ipath_cfgports - 1, - IPATH_MIN_USER_PORT_BUFCNT); - ret = -EINVAL; - goto bail; - } - dd->ipath_lastport_piobuf = - dd->ipath_piobcnt2k + dd->ipath_piobcnt4k - val; - } - - ipath_kpiobufs = val; - ret = 0; -bail: - spin_unlock_irqrestore(&ipath_devs_lock, flags); - - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_intr.c b/drivers/staging/rdma/ipath/ipath_intr.c deleted file mode 100644 index 0403fa28ed8d..000000000000 --- a/drivers/staging/rdma/ipath/ipath_intr.c +++ /dev/null @@ -1,1271 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "ipath_kernel.h" -#include "ipath_verbs.h" -#include "ipath_common.h" - - -/* - * Called when we might have an error that is specific to a particular - * PIO buffer, and may need to cancel that buffer, so it can be re-used. - */ -void ipath_disarm_senderrbufs(struct ipath_devdata *dd) -{ - u32 piobcnt; - unsigned long sbuf[4]; - /* - * it's possible that sendbuffererror could have bits set; might - * have already done this as a result of hardware error handling - */ - piobcnt = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; - /* read these before writing errorclear */ - sbuf[0] = ipath_read_kreg64( - dd, dd->ipath_kregs->kr_sendbuffererror); - sbuf[1] = ipath_read_kreg64( - dd, dd->ipath_kregs->kr_sendbuffererror + 1); - if (piobcnt > 128) - sbuf[2] = ipath_read_kreg64( - dd, dd->ipath_kregs->kr_sendbuffererror + 2); - if (piobcnt > 192) - sbuf[3] = ipath_read_kreg64( - dd, dd->ipath_kregs->kr_sendbuffererror + 3); - else - sbuf[3] = 0; - - if (sbuf[0] || sbuf[1] || (piobcnt > 128 && (sbuf[2] || sbuf[3]))) { - int i; - if (ipath_debug & (__IPATH_PKTDBG|__IPATH_DBG) && - time_after(dd->ipath_lastcancel, jiffies)) { - __IPATH_DBG_WHICH(__IPATH_PKTDBG|__IPATH_DBG, - "SendbufErrs %lx %lx", sbuf[0], - sbuf[1]); - if (ipath_debug & __IPATH_PKTDBG && piobcnt > 128) - printk(" %lx %lx ", sbuf[2], sbuf[3]); - printk("\n"); - } - - for (i = 0; i < piobcnt; i++) - if (test_bit(i, sbuf)) - ipath_disarm_piobufs(dd, i, 1); - /* ignore armlaunch errs for a bit */ - dd->ipath_lastcancel = jiffies+3; - } -} - - -/* These are all rcv-related errors which we want to count for stats */ -#define E_SUM_PKTERRS \ - (INFINIPATH_E_RHDRLEN | INFINIPATH_E_RBADTID | \ - INFINIPATH_E_RBADVERSION | INFINIPATH_E_RHDR | \ - INFINIPATH_E_RLONGPKTLEN | INFINIPATH_E_RSHORTPKTLEN | \ - INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RMINPKTLEN | \ - INFINIPATH_E_RFORMATERR | INFINIPATH_E_RUNSUPVL | \ - INFINIPATH_E_RUNEXPCHAR | INFINIPATH_E_REBP) - -/* These are all send-related errors which we want to count for stats */ -#define E_SUM_ERRS \ - (INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM | \ - INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ - INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SUNSUPVL | \ - INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SPKTLEN | \ - INFINIPATH_E_INVALIDADDR) - -/* - * this is similar to E_SUM_ERRS, but can't ignore armlaunch, don't ignore - * errors not related to freeze and cancelling buffers. Can't ignore - * armlaunch because could get more while still cleaning up, and need - * to cancel those as they happen. - */ -#define E_SPKT_ERRS_IGNORE \ - (INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ - INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SMINPKTLEN | \ - INFINIPATH_E_SPKTLEN) - -/* - * these are errors that can occur when the link changes state while - * a packet is being sent or received. This doesn't cover things - * like EBP or VCRC that can be the result of a sending having the - * link change state, so we receive a "known bad" packet. - */ -#define E_SUM_LINK_PKTERRS \ - (INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_SDROPPEDSMPPKT | \ - INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SPKTLEN | \ - INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RMINPKTLEN | \ - INFINIPATH_E_RUNEXPCHAR) - -static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) -{ - u64 ignore_this_time = 0; - - ipath_disarm_senderrbufs(dd); - if ((errs & E_SUM_LINK_PKTERRS) && - !(dd->ipath_flags & IPATH_LINKACTIVE)) { - /* - * This can happen when SMA is trying to bring the link - * up, but the IB link changes state at the "wrong" time. - * The IB logic then complains that the packet isn't - * valid. We don't want to confuse people, so we just - * don't print them, except at debug - */ - ipath_dbg("Ignoring packet errors %llx, because link not " - "ACTIVE\n", (unsigned long long) errs); - ignore_this_time = errs & E_SUM_LINK_PKTERRS; - } - - return ignore_this_time; -} - -/* generic hw error messages... */ -#define INFINIPATH_HWE_TXEMEMPARITYERR_MSG(a) \ - { \ - .mask = ( INFINIPATH_HWE_TXEMEMPARITYERR_##a << \ - INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT ), \ - .msg = "TXE " #a " Memory Parity" \ - } -#define INFINIPATH_HWE_RXEMEMPARITYERR_MSG(a) \ - { \ - .mask = ( INFINIPATH_HWE_RXEMEMPARITYERR_##a << \ - INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT ), \ - .msg = "RXE " #a " Memory Parity" \ - } - -static const struct ipath_hwerror_msgs ipath_generic_hwerror_msgs[] = { - INFINIPATH_HWE_MSG(IBCBUSFRSPCPARITYERR, "IPATH2IB Parity"), - INFINIPATH_HWE_MSG(IBCBUSTOSPCPARITYERR, "IB2IPATH Parity"), - - INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOBUF), - INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOPBC), - INFINIPATH_HWE_TXEMEMPARITYERR_MSG(PIOLAUNCHFIFO), - - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(RCVBUF), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(LOOKUPQ), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(EAGERTID), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(EXPTID), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(FLAGBUF), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(DATAINFO), - INFINIPATH_HWE_RXEMEMPARITYERR_MSG(HDRINFO), -}; - -/** - * ipath_format_hwmsg - format a single hwerror message - * @msg message buffer - * @msgl length of message buffer - * @hwmsg message to add to message buffer - */ -static void ipath_format_hwmsg(char *msg, size_t msgl, const char *hwmsg) -{ - strlcat(msg, "[", msgl); - strlcat(msg, hwmsg, msgl); - strlcat(msg, "]", msgl); -} - -/** - * ipath_format_hwerrors - format hardware error messages for display - * @hwerrs hardware errors bit vector - * @hwerrmsgs hardware error descriptions - * @nhwerrmsgs number of hwerrmsgs - * @msg message buffer - * @msgl message buffer length - */ -void ipath_format_hwerrors(u64 hwerrs, - const struct ipath_hwerror_msgs *hwerrmsgs, - size_t nhwerrmsgs, - char *msg, size_t msgl) -{ - int i; - const int glen = - ARRAY_SIZE(ipath_generic_hwerror_msgs); - - for (i=0; iib_init) - ret = "Init"; - else if (state == dd->ib_arm) - ret = "Arm"; - else if (state == dd->ib_active) - ret = "Active"; - else - ret = "Down"; - return ret; -} - -void signal_ib_event(struct ipath_devdata *dd, enum ib_event_type ev) -{ - struct ib_event event; - - event.device = &dd->verbs_dev->ibdev; - event.element.port_num = 1; - event.event = ev; - ib_dispatch_event(&event); -} - -static void handle_e_ibstatuschanged(struct ipath_devdata *dd, - ipath_err_t errs) -{ - u32 ltstate, lstate, ibstate, lastlstate; - u32 init = dd->ib_init; - u32 arm = dd->ib_arm; - u32 active = dd->ib_active; - const u64 ibcs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); - - lstate = ipath_ib_linkstate(dd, ibcs); /* linkstate */ - ibstate = ipath_ib_state(dd, ibcs); - /* linkstate at last interrupt */ - lastlstate = ipath_ib_linkstate(dd, dd->ipath_lastibcstat); - ltstate = ipath_ib_linktrstate(dd, ibcs); /* linktrainingtate */ - - /* - * Since going into a recovery state causes the link state to go - * down and since recovery is transitory, it is better if we "miss" - * ever seeing the link training state go into recovery (i.e., - * ignore this transition for link state special handling purposes) - * without even updating ipath_lastibcstat. - */ - if ((ltstate == INFINIPATH_IBCS_LT_STATE_RECOVERRETRAIN) || - (ltstate == INFINIPATH_IBCS_LT_STATE_RECOVERWAITRMT) || - (ltstate == INFINIPATH_IBCS_LT_STATE_RECOVERIDLE)) - goto done; - - /* - * if linkstate transitions into INIT from any of the various down - * states, or if it transitions from any of the up (INIT or better) - * states into any of the down states (except link recovery), then - * call the chip-specific code to take appropriate actions. - */ - if (lstate >= INFINIPATH_IBCS_L_STATE_INIT && - lastlstate == INFINIPATH_IBCS_L_STATE_DOWN) { - /* transitioned to UP */ - if (dd->ipath_f_ib_updown(dd, 1, ibcs)) { - /* link came up, so we must no longer be disabled */ - dd->ipath_flags &= ~IPATH_IB_LINK_DISABLED; - ipath_cdbg(LINKVERB, "LinkUp handled, skipped\n"); - goto skip_ibchange; /* chip-code handled */ - } - } else if ((lastlstate >= INFINIPATH_IBCS_L_STATE_INIT || - (dd->ipath_flags & IPATH_IB_FORCE_NOTIFY)) && - ltstate <= INFINIPATH_IBCS_LT_STATE_CFGWAITRMT && - ltstate != INFINIPATH_IBCS_LT_STATE_LINKUP) { - int handled; - handled = dd->ipath_f_ib_updown(dd, 0, ibcs); - dd->ipath_flags &= ~IPATH_IB_FORCE_NOTIFY; - if (handled) { - ipath_cdbg(LINKVERB, "LinkDown handled, skipped\n"); - goto skip_ibchange; /* chip-code handled */ - } - } - - /* - * Significant enough to always print and get into logs, if it was - * unexpected. If it was a requested state change, we'll have - * already cleared the flags, so we won't print this warning - */ - if ((ibstate != arm && ibstate != active) && - (dd->ipath_flags & (IPATH_LINKARMED | IPATH_LINKACTIVE))) { - dev_info(&dd->pcidev->dev, "Link state changed from %s " - "to %s\n", (dd->ipath_flags & IPATH_LINKARMED) ? - "ARM" : "ACTIVE", ib_linkstate(dd, ibcs)); - } - - if (ltstate == INFINIPATH_IBCS_LT_STATE_POLLACTIVE || - ltstate == INFINIPATH_IBCS_LT_STATE_POLLQUIET) { - u32 lastlts; - lastlts = ipath_ib_linktrstate(dd, dd->ipath_lastibcstat); - /* - * Ignore cycling back and forth from Polling.Active to - * Polling.Quiet while waiting for the other end of the link - * to come up, except to try and decide if we are connected - * to a live IB device or not. We will cycle back and - * forth between them if no cable is plugged in, the other - * device is powered off or disabled, etc. - */ - if (lastlts == INFINIPATH_IBCS_LT_STATE_POLLACTIVE || - lastlts == INFINIPATH_IBCS_LT_STATE_POLLQUIET) { - if (!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) && - (++dd->ipath_ibpollcnt == 40)) { - dd->ipath_flags |= IPATH_NOCABLE; - *dd->ipath_statusp |= - IPATH_STATUS_IB_NOCABLE; - ipath_cdbg(LINKVERB, "Set NOCABLE\n"); - } - ipath_cdbg(LINKVERB, "POLL change to %s (%x)\n", - ipath_ibcstatus_str[ltstate], ibstate); - goto skip_ibchange; - } - } - - dd->ipath_ibpollcnt = 0; /* not poll*, now */ - ipath_stats.sps_iblink++; - - if (ibstate != init && dd->ipath_lastlinkrecov && ipath_linkrecovery) { - u64 linkrecov; - linkrecov = ipath_snap_cntr(dd, - dd->ipath_cregs->cr_iblinkerrrecovcnt); - if (linkrecov != dd->ipath_lastlinkrecov) { - ipath_dbg("IB linkrecov up %Lx (%s %s) recov %Lu\n", - (unsigned long long) ibcs, - ib_linkstate(dd, ibcs), - ipath_ibcstatus_str[ltstate], - (unsigned long long) linkrecov); - /* and no more until active again */ - dd->ipath_lastlinkrecov = 0; - ipath_set_linkstate(dd, IPATH_IB_LINKDOWN); - goto skip_ibchange; - } - } - - if (ibstate == init || ibstate == arm || ibstate == active) { - *dd->ipath_statusp &= ~IPATH_STATUS_IB_NOCABLE; - if (ibstate == init || ibstate == arm) { - *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; - if (dd->ipath_flags & IPATH_LINKACTIVE) - signal_ib_event(dd, IB_EVENT_PORT_ERR); - } - if (ibstate == arm) { - dd->ipath_flags |= IPATH_LINKARMED; - dd->ipath_flags &= ~(IPATH_LINKUNK | - IPATH_LINKINIT | IPATH_LINKDOWN | - IPATH_LINKACTIVE | IPATH_NOCABLE); - ipath_hol_down(dd); - } else if (ibstate == init) { - /* - * set INIT and DOWN. Down is checked by - * most of the other code, but INIT is - * useful to know in a few places. - */ - dd->ipath_flags |= IPATH_LINKINIT | - IPATH_LINKDOWN; - dd->ipath_flags &= ~(IPATH_LINKUNK | - IPATH_LINKARMED | IPATH_LINKACTIVE | - IPATH_NOCABLE); - ipath_hol_down(dd); - } else { /* active */ - dd->ipath_lastlinkrecov = ipath_snap_cntr(dd, - dd->ipath_cregs->cr_iblinkerrrecovcnt); - *dd->ipath_statusp |= - IPATH_STATUS_IB_READY | IPATH_STATUS_IB_CONF; - dd->ipath_flags |= IPATH_LINKACTIVE; - dd->ipath_flags &= ~(IPATH_LINKUNK | IPATH_LINKINIT - | IPATH_LINKDOWN | IPATH_LINKARMED | - IPATH_NOCABLE); - if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - ipath_restart_sdma(dd); - signal_ib_event(dd, IB_EVENT_PORT_ACTIVE); - /* LED active not handled in chip _f_updown */ - dd->ipath_f_setextled(dd, lstate, ltstate); - ipath_hol_up(dd); - } - - /* - * print after we've already done the work, so as not to - * delay the state changes and notifications, for debugging - */ - if (lstate == lastlstate) - ipath_cdbg(LINKVERB, "Unchanged from last: %s " - "(%x)\n", ib_linkstate(dd, ibcs), ibstate); - else - ipath_cdbg(VERBOSE, "Unit %u: link up to %s %s (%x)\n", - dd->ipath_unit, ib_linkstate(dd, ibcs), - ipath_ibcstatus_str[ltstate], ibstate); - } else { /* down */ - if (dd->ipath_flags & IPATH_LINKACTIVE) - signal_ib_event(dd, IB_EVENT_PORT_ERR); - dd->ipath_flags |= IPATH_LINKDOWN; - dd->ipath_flags &= ~(IPATH_LINKUNK | IPATH_LINKINIT - | IPATH_LINKACTIVE | - IPATH_LINKARMED); - *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; - dd->ipath_lli_counter = 0; - - if (lastlstate != INFINIPATH_IBCS_L_STATE_DOWN) - ipath_cdbg(VERBOSE, "Unit %u link state down " - "(state 0x%x), from %s\n", - dd->ipath_unit, lstate, - ib_linkstate(dd, dd->ipath_lastibcstat)); - else - ipath_cdbg(LINKVERB, "Unit %u link state changed " - "to %s (0x%x) from down (%x)\n", - dd->ipath_unit, - ipath_ibcstatus_str[ltstate], - ibstate, lastlstate); - } - -skip_ibchange: - dd->ipath_lastibcstat = ibcs; -done: - return; -} - -static void handle_supp_msgs(struct ipath_devdata *dd, - unsigned supp_msgs, char *msg, u32 msgsz) -{ - /* - * Print the message unless it's ibc status change only, which - * happens so often we never want to count it. - */ - if (dd->ipath_lasterror & ~INFINIPATH_E_IBSTATUSCHANGED) { - int iserr; - ipath_err_t mask; - iserr = ipath_decode_err(dd, msg, msgsz, - dd->ipath_lasterror & - ~INFINIPATH_E_IBSTATUSCHANGED); - - mask = INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL | - INFINIPATH_E_PKTERRS | INFINIPATH_E_SDMADISABLED; - - /* if we're in debug, then don't mask SDMADISABLED msgs */ - if (ipath_debug & __IPATH_DBG) - mask &= ~INFINIPATH_E_SDMADISABLED; - - if (dd->ipath_lasterror & ~mask) - ipath_dev_err(dd, "Suppressed %u messages for " - "fast-repeating errors (%s) (%llx)\n", - supp_msgs, msg, - (unsigned long long) - dd->ipath_lasterror); - else { - /* - * rcvegrfull and rcvhdrqfull are "normal", for some - * types of processes (mostly benchmarks) that send - * huge numbers of messages, while not processing - * them. So only complain about these at debug - * level. - */ - if (iserr) - ipath_dbg("Suppressed %u messages for %s\n", - supp_msgs, msg); - else - ipath_cdbg(ERRPKT, - "Suppressed %u messages for %s\n", - supp_msgs, msg); - } - } -} - -static unsigned handle_frequent_errors(struct ipath_devdata *dd, - ipath_err_t errs, char *msg, - u32 msgsz, int *noprint) -{ - unsigned long nc; - static unsigned long nextmsg_time; - static unsigned nmsgs, supp_msgs; - - /* - * Throttle back "fast" messages to no more than 10 per 5 seconds. - * This isn't perfect, but it's a reasonable heuristic. If we get - * more than 10, give a 6x longer delay. - */ - nc = jiffies; - if (nmsgs > 10) { - if (time_before(nc, nextmsg_time)) { - *noprint = 1; - if (!supp_msgs++) - nextmsg_time = nc + HZ * 3; - } else if (supp_msgs) { - handle_supp_msgs(dd, supp_msgs, msg, msgsz); - supp_msgs = 0; - nmsgs = 0; - } - } else if (!nmsgs++ || time_after(nc, nextmsg_time)) { - nextmsg_time = nc + HZ / 2; - } - - return supp_msgs; -} - -static void handle_sdma_errors(struct ipath_devdata *dd, ipath_err_t errs) -{ - unsigned long flags; - int expected; - - if (ipath_debug & __IPATH_DBG) { - char msg[128]; - ipath_decode_err(dd, msg, sizeof msg, errs & - INFINIPATH_E_SDMAERRS); - ipath_dbg("errors %lx (%s)\n", (unsigned long)errs, msg); - } - if (ipath_debug & __IPATH_VERBDBG) { - unsigned long tl, hd, status, lengen; - tl = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmatail); - hd = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmahead); - status = ipath_read_kreg64(dd - , dd->ipath_kregs->kr_senddmastatus); - lengen = ipath_read_kreg64(dd, - dd->ipath_kregs->kr_senddmalengen); - ipath_cdbg(VERBOSE, "sdma tl 0x%lx hd 0x%lx status 0x%lx " - "lengen 0x%lx\n", tl, hd, status, lengen); - } - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - __set_bit(IPATH_SDMA_DISABLED, &dd->ipath_sdma_status); - expected = test_bit(IPATH_SDMA_ABORTING, &dd->ipath_sdma_status); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - if (!expected) - ipath_cancel_sends(dd, 1); -} - -static void handle_sdma_intr(struct ipath_devdata *dd, u64 istat) -{ - unsigned long flags; - int expected; - - if ((istat & INFINIPATH_I_SDMAINT) && - !test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - ipath_sdma_intr(dd); - - if (istat & INFINIPATH_I_SDMADISABLED) { - expected = test_bit(IPATH_SDMA_ABORTING, - &dd->ipath_sdma_status); - ipath_dbg("%s SDmaDisabled intr\n", - expected ? "expected" : "unexpected"); - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - __set_bit(IPATH_SDMA_DISABLED, &dd->ipath_sdma_status); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - if (!expected) - ipath_cancel_sends(dd, 1); - if (!test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - tasklet_hi_schedule(&dd->ipath_sdma_abort_task); - } -} - -static int handle_hdrq_full(struct ipath_devdata *dd) -{ - int chkerrpkts = 0; - u32 hd, tl; - u32 i; - - ipath_stats.sps_hdrqfull++; - for (i = 0; i < dd->ipath_cfgports; i++) { - struct ipath_portdata *pd = dd->ipath_pd[i]; - - if (i == 0) { - /* - * For kernel receive queues, we just want to know - * if there are packets in the queue that we can - * process. - */ - if (pd->port_head != ipath_get_hdrqtail(pd)) - chkerrpkts |= 1 << i; - continue; - } - - /* Skip if user context is not open */ - if (!pd || !pd->port_cnt) - continue; - - /* Don't report the same point multiple times. */ - if (dd->ipath_flags & IPATH_NODMA_RTAIL) - tl = ipath_read_ureg32(dd, ur_rcvhdrtail, i); - else - tl = ipath_get_rcvhdrtail(pd); - if (tl == pd->port_lastrcvhdrqtail) - continue; - - hd = ipath_read_ureg32(dd, ur_rcvhdrhead, i); - if (hd == (tl + 1) || (!hd && tl == dd->ipath_hdrqlast)) { - pd->port_lastrcvhdrqtail = tl; - pd->port_hdrqfull++; - /* flush hdrqfull so that poll() sees it */ - wmb(); - wake_up_interruptible(&pd->port_wait); - } - } - - return chkerrpkts; -} - -static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) -{ - char msg[128]; - u64 ignore_this_time = 0; - u64 iserr = 0; - int chkerrpkts = 0, noprint = 0; - unsigned supp_msgs; - int log_idx; - - /* - * don't report errors that are masked, either at init - * (not set in ipath_errormask), or temporarily (set in - * ipath_maskederrs) - */ - errs &= dd->ipath_errormask & ~dd->ipath_maskederrs; - - supp_msgs = handle_frequent_errors(dd, errs, msg, (u32)sizeof msg, - &noprint); - - /* do these first, they are most important */ - if (errs & INFINIPATH_E_HARDWARE) { - /* reuse same msg buf */ - dd->ipath_f_handle_hwerrors(dd, msg, sizeof msg); - } else { - u64 mask; - for (log_idx = 0; log_idx < IPATH_EEP_LOG_CNT; ++log_idx) { - mask = dd->ipath_eep_st_masks[log_idx].errs_to_log; - if (errs & mask) - ipath_inc_eeprom_err(dd, log_idx, 1); - } - } - - if (errs & INFINIPATH_E_SDMAERRS) - handle_sdma_errors(dd, errs); - - if (!noprint && (errs & ~dd->ipath_e_bitsextant)) - ipath_dev_err(dd, "error interrupt with unknown errors " - "%llx set\n", (unsigned long long) - (errs & ~dd->ipath_e_bitsextant)); - - if (errs & E_SUM_ERRS) - ignore_this_time = handle_e_sum_errs(dd, errs); - else if ((errs & E_SUM_LINK_PKTERRS) && - !(dd->ipath_flags & IPATH_LINKACTIVE)) { - /* - * This can happen when SMA is trying to bring the link - * up, but the IB link changes state at the "wrong" time. - * The IB logic then complains that the packet isn't - * valid. We don't want to confuse people, so we just - * don't print them, except at debug - */ - ipath_dbg("Ignoring packet errors %llx, because link not " - "ACTIVE\n", (unsigned long long) errs); - ignore_this_time = errs & E_SUM_LINK_PKTERRS; - } - - if (supp_msgs == 250000) { - int s_iserr; - /* - * It's not entirely reasonable assuming that the errors set - * in the last clear period are all responsible for the - * problem, but the alternative is to assume it's the only - * ones on this particular interrupt, which also isn't great - */ - dd->ipath_maskederrs |= dd->ipath_lasterror | errs; - - dd->ipath_errormask &= ~dd->ipath_maskederrs; - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); - s_iserr = ipath_decode_err(dd, msg, sizeof msg, - dd->ipath_maskederrs); - - if (dd->ipath_maskederrs & - ~(INFINIPATH_E_RRCVEGRFULL | - INFINIPATH_E_RRCVHDRFULL | INFINIPATH_E_PKTERRS)) - ipath_dev_err(dd, "Temporarily disabling " - "error(s) %llx reporting; too frequent (%s)\n", - (unsigned long long) dd->ipath_maskederrs, - msg); - else { - /* - * rcvegrfull and rcvhdrqfull are "normal", - * for some types of processes (mostly benchmarks) - * that send huge numbers of messages, while not - * processing them. So only complain about - * these at debug level. - */ - if (s_iserr) - ipath_dbg("Temporarily disabling reporting " - "too frequent queue full errors (%s)\n", - msg); - else - ipath_cdbg(ERRPKT, - "Temporarily disabling reporting too" - " frequent packet errors (%s)\n", - msg); - } - - /* - * Re-enable the masked errors after around 3 minutes. in - * ipath_get_faststats(). If we have a series of fast - * repeating but different errors, the interval will keep - * stretching out, but that's OK, as that's pretty - * catastrophic. - */ - dd->ipath_unmasktime = jiffies + HZ * 180; - } - - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, errs); - if (ignore_this_time) - errs &= ~ignore_this_time; - if (errs & ~dd->ipath_lasterror) { - errs &= ~dd->ipath_lasterror; - /* never suppress duplicate hwerrors or ibstatuschange */ - dd->ipath_lasterror |= errs & - ~(INFINIPATH_E_HARDWARE | - INFINIPATH_E_IBSTATUSCHANGED); - } - - if (errs & INFINIPATH_E_SENDSPECIALTRIGGER) { - dd->ipath_spectriggerhit++; - ipath_dbg("%lu special trigger hits\n", - dd->ipath_spectriggerhit); - } - - /* likely due to cancel; so suppress message unless verbose */ - if ((errs & (INFINIPATH_E_SPKTLEN | INFINIPATH_E_SPIOARMLAUNCH)) && - time_after(dd->ipath_lastcancel, jiffies)) { - /* armlaunch takes precedence; it often causes both. */ - ipath_cdbg(VERBOSE, - "Suppressed %s error (%llx) after sendbuf cancel\n", - (errs & INFINIPATH_E_SPIOARMLAUNCH) ? - "armlaunch" : "sendpktlen", (unsigned long long)errs); - errs &= ~(INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SPKTLEN); - } - - if (!errs) - return 0; - - if (!noprint) { - ipath_err_t mask; - /* - * The ones we mask off are handled specially below - * or above. Also mask SDMADISABLED by default as it - * is too chatty. - */ - mask = INFINIPATH_E_IBSTATUSCHANGED | - INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL | - INFINIPATH_E_HARDWARE | INFINIPATH_E_SDMADISABLED; - - /* if we're in debug, then don't mask SDMADISABLED msgs */ - if (ipath_debug & __IPATH_DBG) - mask &= ~INFINIPATH_E_SDMADISABLED; - - ipath_decode_err(dd, msg, sizeof msg, errs & ~mask); - } else - /* so we don't need if (!noprint) at strlcat's below */ - *msg = 0; - - if (errs & E_SUM_PKTERRS) { - ipath_stats.sps_pkterrs++; - chkerrpkts = 1; - } - if (errs & E_SUM_ERRS) - ipath_stats.sps_errs++; - - if (errs & (INFINIPATH_E_RICRC | INFINIPATH_E_RVCRC)) { - ipath_stats.sps_crcerrs++; - chkerrpkts = 1; - } - iserr = errs & ~(E_SUM_PKTERRS | INFINIPATH_E_PKTERRS); - - - /* - * We don't want to print these two as they happen, or we can make - * the situation even worse, because it takes so long to print - * messages to serial consoles. Kernel ports get printed from - * fast_stats, no more than every 5 seconds, user ports get printed - * on close - */ - if (errs & INFINIPATH_E_RRCVHDRFULL) - chkerrpkts |= handle_hdrq_full(dd); - if (errs & INFINIPATH_E_RRCVEGRFULL) { - struct ipath_portdata *pd = dd->ipath_pd[0]; - - /* - * since this is of less importance and not likely to - * happen without also getting hdrfull, only count - * occurrences; don't check each port (or even the kernel - * vs user) - */ - ipath_stats.sps_etidfull++; - if (pd->port_head != ipath_get_hdrqtail(pd)) - chkerrpkts |= 1; - } - - /* - * do this before IBSTATUSCHANGED, in case both bits set in a single - * interrupt; we want the STATUSCHANGE to "win", so we do our - * internal copy of state machine correctly - */ - if (errs & INFINIPATH_E_RIBLOSTLINK) { - /* - * force through block below - */ - errs |= INFINIPATH_E_IBSTATUSCHANGED; - ipath_stats.sps_iblink++; - dd->ipath_flags |= IPATH_LINKDOWN; - dd->ipath_flags &= ~(IPATH_LINKUNK | IPATH_LINKINIT - | IPATH_LINKARMED | IPATH_LINKACTIVE); - *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY; - - ipath_dbg("Lost link, link now down (%s)\n", - ipath_ibcstatus_str[ipath_read_kreg64(dd, - dd->ipath_kregs->kr_ibcstatus) & 0xf]); - } - if (errs & INFINIPATH_E_IBSTATUSCHANGED) - handle_e_ibstatuschanged(dd, errs); - - if (errs & INFINIPATH_E_RESET) { - if (!noprint) - ipath_dev_err(dd, "Got reset, requires re-init " - "(unload and reload driver)\n"); - dd->ipath_flags &= ~IPATH_INITTED; /* needs re-init */ - /* mark as having had error */ - *dd->ipath_statusp |= IPATH_STATUS_HWERROR; - *dd->ipath_statusp &= ~IPATH_STATUS_IB_CONF; - } - - if (!noprint && *msg) { - if (iserr) - ipath_dev_err(dd, "%s error\n", msg); - } - if (dd->ipath_state_wanted & dd->ipath_flags) { - ipath_cdbg(VERBOSE, "driver wanted state %x, iflags now %x, " - "waking\n", dd->ipath_state_wanted, - dd->ipath_flags); - wake_up_interruptible(&ipath_state_wait); - } - - return chkerrpkts; -} - -/* - * try to cleanup as much as possible for anything that might have gone - * wrong while in freeze mode, such as pio buffers being written by user - * processes (causing armlaunch), send errors due to going into freeze mode, - * etc., and try to avoid causing extra interrupts while doing so. - * Forcibly update the in-memory pioavail register copies after cleanup - * because the chip won't do it while in freeze mode (the register values - * themselves are kept correct). - * Make sure that we don't lose any important interrupts by using the chip - * feature that says that writing 0 to a bit in *clear that is set in - * *status will cause an interrupt to be generated again (if allowed by - * the *mask value). - */ -void ipath_clear_freeze(struct ipath_devdata *dd) -{ - /* disable error interrupts, to avoid confusion */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, 0ULL); - - /* also disable interrupts; errormask is sometimes overwriten */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, 0ULL); - - ipath_cancel_sends(dd, 1); - - /* clear the freeze, and be sure chip saw it */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_control, - dd->ipath_control); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - - /* force in-memory update now we are out of freeze */ - ipath_force_pio_avail_update(dd); - - /* - * force new interrupt if any hwerr, error or interrupt bits are - * still set, and clear "safe" send packet errors related to freeze - * and cancelling sends. Re-enable error interrupts before possible - * force of re-interrupt on pending interrupts. - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, 0ULL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, - E_SPKT_ERRS_IGNORE); - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, -1LL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, 0ULL); -} - - -/* this is separate to allow for better optimization of ipath_intr() */ - -static noinline void ipath_bad_intr(struct ipath_devdata *dd, u32 *unexpectp) -{ - /* - * sometimes happen during driver init and unload, don't want - * to process any interrupts at that point - */ - - /* this is just a bandaid, not a fix, if something goes badly - * wrong */ - if (++*unexpectp > 100) { - if (++*unexpectp > 105) { - /* - * ok, we must be taking somebody else's interrupts, - * due to a messed up mptable and/or PIRQ table, so - * unregister the interrupt. We've seen this during - * linuxbios development work, and it may happen in - * the future again. - */ - if (dd->pcidev && dd->ipath_irq) { - ipath_dev_err(dd, "Now %u unexpected " - "interrupts, unregistering " - "interrupt handler\n", - *unexpectp); - ipath_dbg("free_irq of irq %d\n", - dd->ipath_irq); - dd->ipath_f_free_irq(dd); - } - } - if (ipath_read_ireg(dd, dd->ipath_kregs->kr_intmask)) { - ipath_dev_err(dd, "%u unexpected interrupts, " - "disabling interrupts completely\n", - *unexpectp); - /* - * disable all interrupts, something is very wrong - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, - 0ULL); - } - } else if (*unexpectp > 1) - ipath_dbg("Interrupt when not ready, should not happen, " - "ignoring\n"); -} - -static noinline void ipath_bad_regread(struct ipath_devdata *dd) -{ - static int allbits; - - /* separate routine, for better optimization of ipath_intr() */ - - /* - * We print the message and disable interrupts, in hope of - * having a better chance of debugging the problem. - */ - ipath_dev_err(dd, - "Read of interrupt status failed (all bits set)\n"); - if (allbits++) { - /* disable all interrupts, something is very wrong */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, 0ULL); - if (allbits == 2) { - ipath_dev_err(dd, "Still bad interrupt status, " - "unregistering interrupt\n"); - dd->ipath_f_free_irq(dd); - } else if (allbits > 2) { - if ((allbits % 10000) == 0) - printk("."); - } else - ipath_dev_err(dd, "Disabling interrupts, " - "multiple errors\n"); - } -} - -static void handle_layer_pioavail(struct ipath_devdata *dd) -{ - unsigned long flags; - int ret; - - ret = ipath_ib_piobufavail(dd->verbs_dev); - if (ret > 0) - goto set; - - return; -set: - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl |= INFINIPATH_S_PIOINTBUFAVAIL; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); -} - -/* - * Handle receive interrupts for user ports; this means a user - * process was waiting for a packet to arrive, and didn't want - * to poll - */ -static void handle_urcv(struct ipath_devdata *dd, u64 istat) -{ - u64 portr; - int i; - int rcvdint = 0; - - /* - * test_and_clear_bit(IPATH_PORT_WAITING_RCV) and - * test_and_clear_bit(IPATH_PORT_WAITING_URG) below - * would both like timely updates of the bits so that - * we don't pass them by unnecessarily. the rmb() - * here ensures that we see them promptly -- the - * corresponding wmb()'s are in ipath_poll_urgent() - * and ipath_poll_next()... - */ - rmb(); - portr = ((istat >> dd->ipath_i_rcvavail_shift) & - dd->ipath_i_rcvavail_mask) | - ((istat >> dd->ipath_i_rcvurg_shift) & - dd->ipath_i_rcvurg_mask); - for (i = 1; i < dd->ipath_cfgports; i++) { - struct ipath_portdata *pd = dd->ipath_pd[i]; - - if (portr & (1 << i) && pd && pd->port_cnt) { - if (test_and_clear_bit(IPATH_PORT_WAITING_RCV, - &pd->port_flag)) { - clear_bit(i + dd->ipath_r_intravail_shift, - &dd->ipath_rcvctrl); - wake_up_interruptible(&pd->port_wait); - rcvdint = 1; - } else if (test_and_clear_bit(IPATH_PORT_WAITING_URG, - &pd->port_flag)) { - pd->port_urgent++; - wake_up_interruptible(&pd->port_wait); - } - } - } - if (rcvdint) { - /* only want to take one interrupt, so turn off the rcv - * interrupt for all the ports that we set the rcv_waiting - * (but never for kernel port) - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, - dd->ipath_rcvctrl); - } -} - -irqreturn_t ipath_intr(int irq, void *data) -{ - struct ipath_devdata *dd = data; - u64 istat, chk0rcv = 0; - ipath_err_t estat = 0; - irqreturn_t ret; - static unsigned unexpected = 0; - u64 kportrbits; - - ipath_stats.sps_ints++; - - if (dd->ipath_int_counter != (u32) -1) - dd->ipath_int_counter++; - - if (!(dd->ipath_flags & IPATH_PRESENT)) { - /* - * This return value is not great, but we do not want the - * interrupt core code to remove our interrupt handler - * because we don't appear to be handling an interrupt - * during a chip reset. - */ - return IRQ_HANDLED; - } - - /* - * this needs to be flags&initted, not statusp, so we keep - * taking interrupts even after link goes down, etc. - * Also, we *must* clear the interrupt at some point, or we won't - * take it again, which can be real bad for errors, etc... - */ - - if (!(dd->ipath_flags & IPATH_INITTED)) { - ipath_bad_intr(dd, &unexpected); - ret = IRQ_NONE; - goto bail; - } - - istat = ipath_read_ireg(dd, dd->ipath_kregs->kr_intstatus); - - if (unlikely(!istat)) { - ipath_stats.sps_nullintr++; - ret = IRQ_NONE; /* not our interrupt, or already handled */ - goto bail; - } - if (unlikely(istat == -1)) { - ipath_bad_regread(dd); - /* don't know if it was our interrupt or not */ - ret = IRQ_NONE; - goto bail; - } - - if (unexpected) - unexpected = 0; - - if (unlikely(istat & ~dd->ipath_i_bitsextant)) - ipath_dev_err(dd, - "interrupt with unknown interrupts %Lx set\n", - (unsigned long long) - istat & ~dd->ipath_i_bitsextant); - else if (istat & ~INFINIPATH_I_ERROR) /* errors do own printing */ - ipath_cdbg(VERBOSE, "intr stat=0x%Lx\n", - (unsigned long long) istat); - - if (istat & INFINIPATH_I_ERROR) { - ipath_stats.sps_errints++; - estat = ipath_read_kreg64(dd, - dd->ipath_kregs->kr_errorstatus); - if (!estat) - dev_info(&dd->pcidev->dev, "error interrupt (%Lx), " - "but no error bits set!\n", - (unsigned long long) istat); - else if (estat == -1LL) - /* - * should we try clearing all, or hope next read - * works? - */ - ipath_dev_err(dd, "Read of error status failed " - "(all bits set); ignoring\n"); - else - chk0rcv |= handle_errors(dd, estat); - } - - if (istat & INFINIPATH_I_GPIO) { - /* - * GPIO interrupts fall in two broad classes: - * GPIO_2 indicates (on some HT4xx boards) that a packet - * has arrived for Port 0. Checking for this - * is controlled by flag IPATH_GPIO_INTR. - * GPIO_3..5 on IBA6120 Rev2 and IBA6110 Rev4 chips indicate - * errors that we need to count. Checking for this - * is controlled by flag IPATH_GPIO_ERRINTRS. - */ - u32 gpiostatus; - u32 to_clear = 0; - - gpiostatus = ipath_read_kreg32( - dd, dd->ipath_kregs->kr_gpio_status); - /* First the error-counter case. */ - if ((gpiostatus & IPATH_GPIO_ERRINTR_MASK) && - (dd->ipath_flags & IPATH_GPIO_ERRINTRS)) { - /* want to clear the bits we see asserted. */ - to_clear |= (gpiostatus & IPATH_GPIO_ERRINTR_MASK); - - /* - * Count appropriately, clear bits out of our copy, - * as they have been "handled". - */ - if (gpiostatus & (1 << IPATH_GPIO_RXUVL_BIT)) { - ipath_dbg("FlowCtl on UnsupVL\n"); - dd->ipath_rxfc_unsupvl_errs++; - } - if (gpiostatus & (1 << IPATH_GPIO_OVRUN_BIT)) { - ipath_dbg("Overrun Threshold exceeded\n"); - dd->ipath_overrun_thresh_errs++; - } - if (gpiostatus & (1 << IPATH_GPIO_LLI_BIT)) { - ipath_dbg("Local Link Integrity error\n"); - dd->ipath_lli_errs++; - } - gpiostatus &= ~IPATH_GPIO_ERRINTR_MASK; - } - /* Now the Port0 Receive case */ - if ((gpiostatus & (1 << IPATH_GPIO_PORT0_BIT)) && - (dd->ipath_flags & IPATH_GPIO_INTR)) { - /* - * GPIO status bit 2 is set, and we expected it. - * clear it and indicate in p0bits. - * This probably only happens if a Port0 pkt - * arrives at _just_ the wrong time, and we - * handle that by seting chk0rcv; - */ - to_clear |= (1 << IPATH_GPIO_PORT0_BIT); - gpiostatus &= ~(1 << IPATH_GPIO_PORT0_BIT); - chk0rcv = 1; - } - if (gpiostatus) { - /* - * Some unexpected bits remain. If they could have - * caused the interrupt, complain and clear. - * To avoid repetition of this condition, also clear - * the mask. It is almost certainly due to error. - */ - const u32 mask = (u32) dd->ipath_gpio_mask; - - if (mask & gpiostatus) { - ipath_dbg("Unexpected GPIO IRQ bits %x\n", - gpiostatus & mask); - to_clear |= (gpiostatus & mask); - dd->ipath_gpio_mask &= ~(gpiostatus & mask); - ipath_write_kreg(dd, - dd->ipath_kregs->kr_gpio_mask, - dd->ipath_gpio_mask); - } - } - if (to_clear) { - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_clear, - (u64) to_clear); - } - } - - /* - * Clear the interrupt bits we found set, unless they are receive - * related, in which case we already cleared them above, and don't - * want to clear them again, because we might lose an interrupt. - * Clear it early, so we "know" know the chip will have seen this by - * the time we process the queue, and will re-interrupt if necessary. - * The processor itself won't take the interrupt again until we return. - */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, istat); - - /* - * Handle kernel receive queues before checking for pio buffers - * available since receives can overflow; piobuf waiters can afford - * a few extra cycles, since they were waiting anyway, and user's - * waiting for receive are at the bottom. - */ - kportrbits = (1ULL << dd->ipath_i_rcvavail_shift) | - (1ULL << dd->ipath_i_rcvurg_shift); - if (chk0rcv || (istat & kportrbits)) { - istat &= ~kportrbits; - ipath_kreceive(dd->ipath_pd[0]); - } - - if (istat & ((dd->ipath_i_rcvavail_mask << dd->ipath_i_rcvavail_shift) | - (dd->ipath_i_rcvurg_mask << dd->ipath_i_rcvurg_shift))) - handle_urcv(dd, istat); - - if (istat & (INFINIPATH_I_SDMAINT | INFINIPATH_I_SDMADISABLED)) - handle_sdma_intr(dd, istat); - - if (istat & INFINIPATH_I_SPIOBUFAVAIL) { - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~INFINIPATH_S_PIOINTBUFAVAIL; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* always process; sdma verbs uses PIO for acks and VL15 */ - handle_layer_pioavail(dd); - } - - ret = IRQ_HANDLED; - -bail: - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_kernel.h b/drivers/staging/rdma/ipath/ipath_kernel.h deleted file mode 100644 index 66c934a5f839..000000000000 --- a/drivers/staging/rdma/ipath/ipath_kernel.h +++ /dev/null @@ -1,1374 +0,0 @@ -#ifndef _IPATH_KERNEL_H -#define _IPATH_KERNEL_H -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * This header file is the base header file for infinipath kernel code - * ipath_user.h serves a similar purpose for user code. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_common.h" -#include "ipath_debug.h" -#include "ipath_registers.h" - -/* only s/w major version of InfiniPath we can handle */ -#define IPATH_CHIP_VERS_MAJ 2U - -/* don't care about this except printing */ -#define IPATH_CHIP_VERS_MIN 0U - -/* temporary, maybe always */ -extern struct infinipath_stats ipath_stats; - -#define IPATH_CHIP_SWVERSION IPATH_CHIP_VERS_MAJ -/* - * First-cut critierion for "device is active" is - * two thousand dwords combined Tx, Rx traffic per - * 5-second interval. SMA packets are 64 dwords, - * and occur "a few per second", presumably each way. - */ -#define IPATH_TRAFFIC_ACTIVE_THRESHOLD (2000) -/* - * Struct used to indicate which errors are logged in each of the - * error-counters that are logged to EEPROM. A counter is incremented - * _once_ (saturating at 255) for each event with any bits set in - * the error or hwerror register masks below. - */ -#define IPATH_EEP_LOG_CNT (4) -struct ipath_eep_log_mask { - u64 errs_to_log; - u64 hwerrs_to_log; -}; - -struct ipath_portdata { - void **port_rcvegrbuf; - dma_addr_t *port_rcvegrbuf_phys; - /* rcvhdrq base, needs mmap before useful */ - void *port_rcvhdrq; - /* kernel virtual address where hdrqtail is updated */ - void *port_rcvhdrtail_kvaddr; - /* - * temp buffer for expected send setup, allocated at open, instead - * of each setup call - */ - void *port_tid_pg_list; - /* when waiting for rcv or pioavail */ - wait_queue_head_t port_wait; - /* - * rcvegr bufs base, physical, must fit - * in 44 bits so 32 bit programs mmap64 44 bit works) - */ - dma_addr_t port_rcvegr_phys; - /* mmap of hdrq, must fit in 44 bits */ - dma_addr_t port_rcvhdrq_phys; - dma_addr_t port_rcvhdrqtailaddr_phys; - /* - * number of opens (including slave subports) on this instance - * (ignoring forks, dup, etc. for now) - */ - int port_cnt; - /* - * how much space to leave at start of eager TID entries for - * protocol use, on each TID - */ - /* instead of calculating it */ - unsigned port_port; - /* non-zero if port is being shared. */ - u16 port_subport_cnt; - /* non-zero if port is being shared. */ - u16 port_subport_id; - /* number of pio bufs for this port (all procs, if shared) */ - u32 port_piocnt; - /* first pio buffer for this port */ - u32 port_pio_base; - /* chip offset of PIO buffers for this port */ - u32 port_piobufs; - /* how many alloc_pages() chunks in port_rcvegrbuf_pages */ - u32 port_rcvegrbuf_chunks; - /* how many egrbufs per chunk */ - u32 port_rcvegrbufs_perchunk; - /* order for port_rcvegrbuf_pages */ - size_t port_rcvegrbuf_size; - /* rcvhdrq size (for freeing) */ - size_t port_rcvhdrq_size; - /* next expected TID to check when looking for free */ - u32 port_tidcursor; - /* next expected TID to check */ - unsigned long port_flag; - /* what happened */ - unsigned long int_flag; - /* WAIT_RCV that timed out, no interrupt */ - u32 port_rcvwait_to; - /* WAIT_PIO that timed out, no interrupt */ - u32 port_piowait_to; - /* WAIT_RCV already happened, no wait */ - u32 port_rcvnowait; - /* WAIT_PIO already happened, no wait */ - u32 port_pionowait; - /* total number of rcvhdrqfull errors */ - u32 port_hdrqfull; - /* - * Used to suppress multiple instances of same - * port staying stuck at same point. - */ - u32 port_lastrcvhdrqtail; - /* saved total number of rcvhdrqfull errors for poll edge trigger */ - u32 port_hdrqfull_poll; - /* total number of polled urgent packets */ - u32 port_urgent; - /* saved total number of polled urgent packets for poll edge trigger */ - u32 port_urgent_poll; - /* pid of process using this port */ - struct pid *port_pid; - struct pid *port_subpid[INFINIPATH_MAX_SUBPORT]; - /* same size as task_struct .comm[] */ - char port_comm[TASK_COMM_LEN]; - /* pkeys set by this use of this port */ - u16 port_pkeys[4]; - /* so file ops can get at unit */ - struct ipath_devdata *port_dd; - /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ - void *subport_uregbase; - /* An array of pages for the eager receive buffers * N */ - void *subport_rcvegrbuf; - /* An array of pages for the eager header queue entries * N */ - void *subport_rcvhdr_base; - /* The version of the library which opened this port */ - u32 userversion; - /* Bitmask of active slaves */ - u32 active_slaves; - /* Type of packets or conditions we want to poll for */ - u16 poll_type; - /* port rcvhdrq head offset */ - u32 port_head; - /* receive packet sequence counter */ - u32 port_seq_cnt; -}; - -struct sk_buff; -struct ipath_sge_state; -struct ipath_verbs_txreq; - -/* - * control information for layered drivers - */ -struct _ipath_layer { - void *l_arg; -}; - -struct ipath_skbinfo { - struct sk_buff *skb; - dma_addr_t phys; -}; - -struct ipath_sdma_txreq { - int flags; - int sg_count; - union { - struct scatterlist *sg; - void *map_addr; - }; - void (*callback)(void *, int); - void *callback_cookie; - int callback_status; - u16 start_idx; /* sdma private */ - u16 next_descq_idx; /* sdma private */ - struct list_head list; /* sdma private */ -}; - -struct ipath_sdma_desc { - __le64 qw[2]; -}; - -#define IPATH_SDMA_TXREQ_F_USELARGEBUF 0x1 -#define IPATH_SDMA_TXREQ_F_HEADTOHOST 0x2 -#define IPATH_SDMA_TXREQ_F_INTREQ 0x4 -#define IPATH_SDMA_TXREQ_F_FREEBUF 0x8 -#define IPATH_SDMA_TXREQ_F_FREEDESC 0x10 -#define IPATH_SDMA_TXREQ_F_VL15 0x20 - -#define IPATH_SDMA_TXREQ_S_OK 0 -#define IPATH_SDMA_TXREQ_S_SENDERROR 1 -#define IPATH_SDMA_TXREQ_S_ABORTED 2 -#define IPATH_SDMA_TXREQ_S_SHUTDOWN 3 - -#define IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG (1ull << 63) -#define IPATH_SDMA_STATUS_ABORT_IN_PROG (1ull << 62) -#define IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE (1ull << 61) -#define IPATH_SDMA_STATUS_SCB_EMPTY (1ull << 30) - -/* max dwords in small buffer packet */ -#define IPATH_SMALLBUF_DWORDS (dd->ipath_piosize2k >> 2) - -/* - * Possible IB config parameters for ipath_f_get/set_ib_cfg() - */ -#define IPATH_IB_CFG_LIDLMC 0 /* Get/set LID (LS16b) and Mask (MS16b) */ -#define IPATH_IB_CFG_HRTBT 1 /* Get/set Heartbeat off/enable/auto */ -#define IPATH_IB_HRTBT_ON 3 /* Heartbeat enabled, sent every 100msec */ -#define IPATH_IB_HRTBT_OFF 0 /* Heartbeat off */ -#define IPATH_IB_CFG_LWID_ENB 2 /* Get/set allowed Link-width */ -#define IPATH_IB_CFG_LWID 3 /* Get currently active Link-width */ -#define IPATH_IB_CFG_SPD_ENB 4 /* Get/set allowed Link speeds */ -#define IPATH_IB_CFG_SPD 5 /* Get current Link spd */ -#define IPATH_IB_CFG_RXPOL_ENB 6 /* Get/set Auto-RX-polarity enable */ -#define IPATH_IB_CFG_LREV_ENB 7 /* Get/set Auto-Lane-reversal enable */ -#define IPATH_IB_CFG_LINKLATENCY 8 /* Get Auto-Lane-reversal enable */ - - -struct ipath_devdata { - struct list_head ipath_list; - - struct ipath_kregs const *ipath_kregs; - struct ipath_cregs const *ipath_cregs; - - /* mem-mapped pointer to base of chip regs */ - u64 __iomem *ipath_kregbase; - /* end of mem-mapped chip space; range checking */ - u64 __iomem *ipath_kregend; - /* physical address of chip for io_remap, etc. */ - unsigned long ipath_physaddr; - /* base of memory alloced for ipath_kregbase, for free */ - u64 *ipath_kregalloc; - /* ipath_cfgports pointers */ - struct ipath_portdata **ipath_pd; - /* sk_buffs used by port 0 eager receive queue */ - struct ipath_skbinfo *ipath_port0_skbinfo; - /* kvirt address of 1st 2k pio buffer */ - void __iomem *ipath_pio2kbase; - /* kvirt address of 1st 4k pio buffer */ - void __iomem *ipath_pio4kbase; - /* - * points to area where PIOavail registers will be DMA'ed. - * Has to be on a page of it's own, because the page will be - * mapped into user program space. This copy is *ONLY* ever - * written by DMA, not by the driver! Need a copy per device - * when we get to multiple devices - */ - volatile __le64 *ipath_pioavailregs_dma; - /* physical address where updates occur */ - dma_addr_t ipath_pioavailregs_phys; - struct _ipath_layer ipath_layer; - /* setup intr */ - int (*ipath_f_intrsetup)(struct ipath_devdata *); - /* fallback to alternate interrupt type if possible */ - int (*ipath_f_intr_fallback)(struct ipath_devdata *); - /* setup on-chip bus config */ - int (*ipath_f_bus)(struct ipath_devdata *, struct pci_dev *); - /* hard reset chip */ - int (*ipath_f_reset)(struct ipath_devdata *); - int (*ipath_f_get_boardname)(struct ipath_devdata *, char *, - size_t); - void (*ipath_f_init_hwerrors)(struct ipath_devdata *); - void (*ipath_f_handle_hwerrors)(struct ipath_devdata *, char *, - size_t); - void (*ipath_f_quiet_serdes)(struct ipath_devdata *); - int (*ipath_f_bringup_serdes)(struct ipath_devdata *); - int (*ipath_f_early_init)(struct ipath_devdata *); - void (*ipath_f_clear_tids)(struct ipath_devdata *, unsigned); - void (*ipath_f_put_tid)(struct ipath_devdata *, u64 __iomem*, - u32, unsigned long); - void (*ipath_f_tidtemplate)(struct ipath_devdata *); - void (*ipath_f_cleanup)(struct ipath_devdata *); - void (*ipath_f_setextled)(struct ipath_devdata *, u64, u64); - /* fill out chip-specific fields */ - int (*ipath_f_get_base_info)(struct ipath_portdata *, void *); - /* free irq */ - void (*ipath_f_free_irq)(struct ipath_devdata *); - struct ipath_message_header *(*ipath_f_get_msgheader) - (struct ipath_devdata *, __le32 *); - void (*ipath_f_config_ports)(struct ipath_devdata *, ushort); - int (*ipath_f_get_ib_cfg)(struct ipath_devdata *, int); - int (*ipath_f_set_ib_cfg)(struct ipath_devdata *, int, u32); - void (*ipath_f_config_jint)(struct ipath_devdata *, u16 , u16); - void (*ipath_f_read_counters)(struct ipath_devdata *, - struct infinipath_counters *); - void (*ipath_f_xgxs_reset)(struct ipath_devdata *); - /* per chip actions needed for IB Link up/down changes */ - int (*ipath_f_ib_updown)(struct ipath_devdata *, int, u64); - - unsigned ipath_lastegr_idx; - struct ipath_ibdev *verbs_dev; - struct timer_list verbs_timer; - /* total dwords sent (summed from counter) */ - u64 ipath_sword; - /* total dwords rcvd (summed from counter) */ - u64 ipath_rword; - /* total packets sent (summed from counter) */ - u64 ipath_spkts; - /* total packets rcvd (summed from counter) */ - u64 ipath_rpkts; - /* ipath_statusp initially points to this. */ - u64 _ipath_status; - /* GUID for this interface, in network order */ - __be64 ipath_guid; - /* - * aggregrate of error bits reported since last cleared, for - * limiting of error reporting - */ - ipath_err_t ipath_lasterror; - /* - * aggregrate of error bits reported since last cleared, for - * limiting of hwerror reporting - */ - ipath_err_t ipath_lasthwerror; - /* errors masked because they occur too fast */ - ipath_err_t ipath_maskederrs; - u64 ipath_lastlinkrecov; /* link recoveries at last ACTIVE */ - /* these 5 fields are used to establish deltas for IB Symbol - * errors and linkrecovery errors. They can be reported on - * some chips during link negotiation prior to INIT, and with - * DDR when faking DDR negotiations with non-IBTA switches. - * The chip counters are adjusted at driver unload if there is - * a non-zero delta. - */ - u64 ibdeltainprog; - u64 ibsymdelta; - u64 ibsymsnap; - u64 iblnkerrdelta; - u64 iblnkerrsnap; - - /* time in jiffies at which to re-enable maskederrs */ - unsigned long ipath_unmasktime; - /* count of egrfull errors, combined for all ports */ - u64 ipath_last_tidfull; - /* for ipath_qcheck() */ - u64 ipath_lastport0rcv_cnt; - /* template for writing TIDs */ - u64 ipath_tidtemplate; - /* value to write to free TIDs */ - u64 ipath_tidinvalid; - /* IBA6120 rcv interrupt setup */ - u64 ipath_rhdrhead_intr_off; - - /* size of memory at ipath_kregbase */ - u32 ipath_kregsize; - /* number of registers used for pioavail */ - u32 ipath_pioavregs; - /* IPATH_POLL, etc. */ - u32 ipath_flags; - /* ipath_flags driver is waiting for */ - u32 ipath_state_wanted; - /* last buffer for user use, first buf for kernel use is this - * index. */ - u32 ipath_lastport_piobuf; - /* is a stats timer active */ - u32 ipath_stats_timer_active; - /* number of interrupts for this device -- saturates... */ - u32 ipath_int_counter; - /* dwords sent read from counter */ - u32 ipath_lastsword; - /* dwords received read from counter */ - u32 ipath_lastrword; - /* sent packets read from counter */ - u32 ipath_lastspkts; - /* received packets read from counter */ - u32 ipath_lastrpkts; - /* pio bufs allocated per port */ - u32 ipath_pbufsport; - /* if remainder on bufs/port, ports < extrabuf get 1 extra */ - u32 ipath_ports_extrabuf; - u32 ipath_pioupd_thresh; /* update threshold, some chips */ - /* - * number of ports configured as max; zero is set to number chip - * supports, less gives more pio bufs/port, etc. - */ - u32 ipath_cfgports; - /* count of port 0 hdrqfull errors */ - u32 ipath_p0_hdrqfull; - /* port 0 number of receive eager buffers */ - u32 ipath_p0_rcvegrcnt; - - /* - * index of last piobuffer we used. Speeds up searching, by - * starting at this point. Doesn't matter if multiple cpu's use and - * update, last updater is only write that matters. Whenever it - * wraps, we update shadow copies. Need a copy per device when we - * get to multiple devices - */ - u32 ipath_lastpioindex; - u32 ipath_lastpioindexl; - /* max length of freezemsg */ - u32 ipath_freezelen; - /* - * consecutive times we wanted a PIO buffer but were unable to - * get one - */ - u32 ipath_consec_nopiobuf; - /* - * hint that we should update ipath_pioavailshadow before - * looking for a PIO buffer - */ - u32 ipath_upd_pio_shadow; - /* so we can rewrite it after a chip reset */ - u32 ipath_pcibar0; - /* so we can rewrite it after a chip reset */ - u32 ipath_pcibar1; - u32 ipath_x1_fix_tries; - u32 ipath_autoneg_tries; - u32 serdes_first_init_done; - - struct ipath_relock { - atomic_t ipath_relock_timer_active; - struct timer_list ipath_relock_timer; - unsigned int ipath_relock_interval; /* in jiffies */ - } ipath_relock_singleton; - - /* interrupt number */ - int ipath_irq; - /* HT/PCI Vendor ID (here for NodeInfo) */ - u16 ipath_vendorid; - /* HT/PCI Device ID (here for NodeInfo) */ - u16 ipath_deviceid; - /* offset in HT config space of slave/primary interface block */ - u8 ipath_ht_slave_off; - /* for write combining settings */ - int wc_cookie; - /* ref count for each pkey */ - atomic_t ipath_pkeyrefs[4]; - /* shadow copy of struct page *'s for exp tid pages */ - struct page **ipath_pageshadow; - /* shadow copy of dma handles for exp tid pages */ - dma_addr_t *ipath_physshadow; - u64 __iomem *ipath_egrtidbase; - /* lock to workaround chip bug 9437 and others */ - spinlock_t ipath_kernel_tid_lock; - spinlock_t ipath_user_tid_lock; - spinlock_t ipath_sendctrl_lock; - /* around ipath_pd and (user ports) port_cnt use (intr vs free) */ - spinlock_t ipath_uctxt_lock; - - /* - * IPATH_STATUS_*, - * this address is mapped readonly into user processes so they can - * get status cheaply, whenever they want. - */ - u64 *ipath_statusp; - /* freeze msg if hw error put chip in freeze */ - char *ipath_freezemsg; - /* pci access data structure */ - struct pci_dev *pcidev; - struct cdev *user_cdev; - struct cdev *diag_cdev; - struct device *user_dev; - struct device *diag_dev; - /* timer used to prevent stats overflow, error throttling, etc. */ - struct timer_list ipath_stats_timer; - /* timer to verify interrupts work, and fallback if possible */ - struct timer_list ipath_intrchk_timer; - void *ipath_dummy_hdrq; /* used after port close */ - dma_addr_t ipath_dummy_hdrq_phys; - - /* SendDMA related entries */ - spinlock_t ipath_sdma_lock; - unsigned long ipath_sdma_status; - unsigned long ipath_sdma_abort_jiffies; - unsigned long ipath_sdma_abort_intr_timeout; - unsigned long ipath_sdma_buf_jiffies; - struct ipath_sdma_desc *ipath_sdma_descq; - u64 ipath_sdma_descq_added; - u64 ipath_sdma_descq_removed; - int ipath_sdma_desc_nreserved; - u16 ipath_sdma_descq_cnt; - u16 ipath_sdma_descq_tail; - u16 ipath_sdma_descq_head; - u16 ipath_sdma_next_intr; - u16 ipath_sdma_reset_wait; - u8 ipath_sdma_generation; - struct tasklet_struct ipath_sdma_abort_task; - struct tasklet_struct ipath_sdma_notify_task; - struct list_head ipath_sdma_activelist; - struct list_head ipath_sdma_notifylist; - atomic_t ipath_sdma_vl15_count; - struct timer_list ipath_sdma_vl15_timer; - - dma_addr_t ipath_sdma_descq_phys; - volatile __le64 *ipath_sdma_head_dma; - dma_addr_t ipath_sdma_head_phys; - - unsigned long ipath_ureg_align; /* user register alignment */ - - struct delayed_work ipath_autoneg_work; - wait_queue_head_t ipath_autoneg_wait; - - /* HoL blocking / user app forward-progress state */ - unsigned ipath_hol_state; - unsigned ipath_hol_next; - struct timer_list ipath_hol_timer; - - /* - * Shadow copies of registers; size indicates read access size. - * Most of them are readonly, but some are write-only register, - * where we manipulate the bits in the shadow copy, and then write - * the shadow copy to infinipath. - * - * We deliberately make most of these 32 bits, since they have - * restricted range. For any that we read, we won't to generate 32 - * bit accesses, since Opteron will generate 2 separate 32 bit HT - * transactions for a 64 bit read, and we want to avoid unnecessary - * HT transactions. - */ - - /* This is the 64 bit group */ - - /* - * shadow of pioavail, check to be sure it's large enough at - * init time. - */ - unsigned long ipath_pioavailshadow[8]; - /* bitmap of send buffers available for the kernel to use with PIO. */ - unsigned long ipath_pioavailkernel[8]; - /* shadow of kr_gpio_out, for rmw ops */ - u64 ipath_gpio_out; - /* shadow the gpio mask register */ - u64 ipath_gpio_mask; - /* shadow the gpio output enable, etc... */ - u64 ipath_extctrl; - /* kr_revision shadow */ - u64 ipath_revision; - /* - * shadow of ibcctrl, for interrupt handling of link changes, - * etc. - */ - u64 ipath_ibcctrl; - /* - * last ibcstatus, to suppress "duplicate" status change messages, - * mostly from 2 to 3 - */ - u64 ipath_lastibcstat; - /* hwerrmask shadow */ - ipath_err_t ipath_hwerrmask; - ipath_err_t ipath_errormask; /* errormask shadow */ - /* interrupt config reg shadow */ - u64 ipath_intconfig; - /* kr_sendpiobufbase value */ - u64 ipath_piobufbase; - /* kr_ibcddrctrl shadow */ - u64 ipath_ibcddrctrl; - - /* these are the "32 bit" regs */ - - /* - * number of GUIDs in the flash for this interface; may need some - * rethinking for setting on other ifaces - */ - u32 ipath_nguid; - /* - * the following two are 32-bit bitmasks, but {test,clear,set}_bit - * all expect bit fields to be "unsigned long" - */ - /* shadow kr_rcvctrl */ - unsigned long ipath_rcvctrl; - /* shadow kr_sendctrl */ - unsigned long ipath_sendctrl; - /* to not count armlaunch after cancel */ - unsigned long ipath_lastcancel; - /* count cases where special trigger was needed (double write) */ - unsigned long ipath_spectriggerhit; - - /* value we put in kr_rcvhdrcnt */ - u32 ipath_rcvhdrcnt; - /* value we put in kr_rcvhdrsize */ - u32 ipath_rcvhdrsize; - /* value we put in kr_rcvhdrentsize */ - u32 ipath_rcvhdrentsize; - /* offset of last entry in rcvhdrq */ - u32 ipath_hdrqlast; - /* kr_portcnt value */ - u32 ipath_portcnt; - /* kr_pagealign value */ - u32 ipath_palign; - /* number of "2KB" PIO buffers */ - u32 ipath_piobcnt2k; - /* size in bytes of "2KB" PIO buffers */ - u32 ipath_piosize2k; - /* number of "4KB" PIO buffers */ - u32 ipath_piobcnt4k; - /* size in bytes of "4KB" PIO buffers */ - u32 ipath_piosize4k; - u32 ipath_pioreserved; /* reserved special-inkernel; */ - /* kr_rcvegrbase value */ - u32 ipath_rcvegrbase; - /* kr_rcvegrcnt value */ - u32 ipath_rcvegrcnt; - /* kr_rcvtidbase value */ - u32 ipath_rcvtidbase; - /* kr_rcvtidcnt value */ - u32 ipath_rcvtidcnt; - /* kr_sendregbase */ - u32 ipath_sregbase; - /* kr_userregbase */ - u32 ipath_uregbase; - /* kr_counterregbase */ - u32 ipath_cregbase; - /* shadow the control register contents */ - u32 ipath_control; - /* PCI revision register (HTC rev on FPGA) */ - u32 ipath_pcirev; - - /* chip address space used by 4k pio buffers */ - u32 ipath_4kalign; - /* The MTU programmed for this unit */ - u32 ipath_ibmtu; - /* - * The max size IB packet, included IB headers that we can send. - * Starts same as ipath_piosize, but is affected when ibmtu is - * changed, or by size of eager buffers - */ - u32 ipath_ibmaxlen; - /* - * ibmaxlen at init time, limited by chip and by receive buffer - * size. Not changed after init. - */ - u32 ipath_init_ibmaxlen; - /* size of each rcvegrbuffer */ - u32 ipath_rcvegrbufsize; - /* localbus width (1, 2,4,8,16,32) from config space */ - u32 ipath_lbus_width; - /* localbus speed (HT: 200,400,800,1000; PCIe 2500) */ - u32 ipath_lbus_speed; - /* - * number of sequential ibcstatus change for polling active/quiet - * (i.e., link not coming up). - */ - u32 ipath_ibpollcnt; - /* low and high portions of MSI capability/vector */ - u32 ipath_msi_lo; - /* saved after PCIe init for restore after reset */ - u32 ipath_msi_hi; - /* MSI data (vector) saved for restore */ - u16 ipath_msi_data; - /* MLID programmed for this instance */ - u16 ipath_mlid; - /* LID programmed for this instance */ - u16 ipath_lid; - /* list of pkeys programmed; 0 if not set */ - u16 ipath_pkeys[4]; - /* - * ASCII serial number, from flash, large enough for original - * all digit strings, and longer QLogic serial number format - */ - u8 ipath_serial[16]; - /* human readable board version */ - u8 ipath_boardversion[96]; - u8 ipath_lbus_info[32]; /* human readable localbus info */ - /* chip major rev, from ipath_revision */ - u8 ipath_majrev; - /* chip minor rev, from ipath_revision */ - u8 ipath_minrev; - /* board rev, from ipath_revision */ - u8 ipath_boardrev; - /* saved for restore after reset */ - u8 ipath_pci_cacheline; - /* LID mask control */ - u8 ipath_lmc; - /* link width supported */ - u8 ipath_link_width_supported; - /* link speed supported */ - u8 ipath_link_speed_supported; - u8 ipath_link_width_enabled; - u8 ipath_link_speed_enabled; - u8 ipath_link_width_active; - u8 ipath_link_speed_active; - /* Rx Polarity inversion (compensate for ~tx on partner) */ - u8 ipath_rx_pol_inv; - - u8 ipath_r_portenable_shift; - u8 ipath_r_intravail_shift; - u8 ipath_r_tailupd_shift; - u8 ipath_r_portcfg_shift; - - /* unit # of this chip, if present */ - int ipath_unit; - - /* local link integrity counter */ - u32 ipath_lli_counter; - /* local link integrity errors */ - u32 ipath_lli_errors; - /* - * Above counts only cases where _successive_ LocalLinkIntegrity - * errors were seen in the receive headers of kern-packets. - * Below are the three (monotonically increasing) counters - * maintained via GPIO interrupts on iba6120-rev2. - */ - u32 ipath_rxfc_unsupvl_errs; - u32 ipath_overrun_thresh_errs; - u32 ipath_lli_errs; - - /* - * Not all devices managed by a driver instance are the same - * type, so these fields must be per-device. - */ - u64 ipath_i_bitsextant; - ipath_err_t ipath_e_bitsextant; - ipath_err_t ipath_hwe_bitsextant; - - /* - * Below should be computable from number of ports, - * since they are never modified. - */ - u64 ipath_i_rcvavail_mask; - u64 ipath_i_rcvurg_mask; - u16 ipath_i_rcvurg_shift; - u16 ipath_i_rcvavail_shift; - - /* - * Register bits for selecting i2c direction and values, used for - * I2C serial flash. - */ - u8 ipath_gpio_sda_num; - u8 ipath_gpio_scl_num; - u8 ipath_i2c_chain_type; - u64 ipath_gpio_sda; - u64 ipath_gpio_scl; - - /* lock for doing RMW of shadows/regs for ExtCtrl and GPIO */ - spinlock_t ipath_gpio_lock; - - /* - * IB link and linktraining states and masks that vary per chip in - * some way. Set at init, to avoid each IB status change interrupt - */ - u8 ibcs_ls_shift; - u8 ibcs_lts_mask; - u32 ibcs_mask; - u32 ib_init; - u32 ib_arm; - u32 ib_active; - - u16 ipath_rhf_offset; /* offset of RHF within receive header entry */ - - /* - * shift/mask for linkcmd, linkinitcmd, maxpktlen in ibccontol - * reg. Changes for IBA7220 - */ - u8 ibcc_lic_mask; /* LinkInitCmd */ - u8 ibcc_lc_shift; /* LinkCmd */ - u8 ibcc_mpl_shift; /* Maxpktlen */ - - u8 delay_mult; - - /* used to override LED behavior */ - u8 ipath_led_override; /* Substituted for normal value, if non-zero */ - u16 ipath_led_override_timeoff; /* delta to next timer event */ - u8 ipath_led_override_vals[2]; /* Alternates per blink-frame */ - u8 ipath_led_override_phase; /* Just counts, LSB picks from vals[] */ - atomic_t ipath_led_override_timer_active; - /* Used to flash LEDs in override mode */ - struct timer_list ipath_led_override_timer; - - /* Support (including locks) for EEPROM logging of errors and time */ - /* control access to actual counters, timer */ - spinlock_t ipath_eep_st_lock; - /* control high-level access to EEPROM */ - struct mutex ipath_eep_lock; - /* Below inc'd by ipath_snap_cntrs(), locked by ipath_eep_st_lock */ - uint64_t ipath_traffic_wds; - /* active time is kept in seconds, but logged in hours */ - atomic_t ipath_active_time; - /* Below are nominal shadow of EEPROM, new since last EEPROM update */ - uint8_t ipath_eep_st_errs[IPATH_EEP_LOG_CNT]; - uint8_t ipath_eep_st_new_errs[IPATH_EEP_LOG_CNT]; - uint16_t ipath_eep_hrs; - /* - * masks for which bits of errs, hwerrs that cause - * each of the counters to increment. - */ - struct ipath_eep_log_mask ipath_eep_st_masks[IPATH_EEP_LOG_CNT]; - - /* interrupt mitigation reload register info */ - u16 ipath_jint_idle_ticks; /* idle clock ticks */ - u16 ipath_jint_max_packets; /* max packets across all ports */ - - /* - * lock for access to SerDes, and flags to sequence preset - * versus steady-state. 7220-only at the moment. - */ - spinlock_t ipath_sdepb_lock; - u8 ipath_presets_needed; /* Set if presets to be restored next DOWN */ -}; - -/* ipath_hol_state values (stopping/starting user proc, send flushing) */ -#define IPATH_HOL_UP 0 -#define IPATH_HOL_DOWN 1 -/* ipath_hol_next toggle values, used when hol_state IPATH_HOL_DOWN */ -#define IPATH_HOL_DOWNSTOP 0 -#define IPATH_HOL_DOWNCONT 1 - -/* bit positions for sdma_status */ -#define IPATH_SDMA_ABORTING 0 -#define IPATH_SDMA_DISARMED 1 -#define IPATH_SDMA_DISABLED 2 -#define IPATH_SDMA_LAYERBUF 3 -#define IPATH_SDMA_RUNNING 30 -#define IPATH_SDMA_SHUTDOWN 31 - -/* bit combinations that correspond to abort states */ -#define IPATH_SDMA_ABORT_NONE 0 -#define IPATH_SDMA_ABORT_ABORTING (1UL << IPATH_SDMA_ABORTING) -#define IPATH_SDMA_ABORT_DISARMED ((1UL << IPATH_SDMA_ABORTING) | \ - (1UL << IPATH_SDMA_DISARMED)) -#define IPATH_SDMA_ABORT_DISABLED ((1UL << IPATH_SDMA_ABORTING) | \ - (1UL << IPATH_SDMA_DISABLED)) -#define IPATH_SDMA_ABORT_ABORTED ((1UL << IPATH_SDMA_ABORTING) | \ - (1UL << IPATH_SDMA_DISARMED) | (1UL << IPATH_SDMA_DISABLED)) -#define IPATH_SDMA_ABORT_MASK ((1UL<private_data)->pd -#define subport_fp(fp) \ - ((struct ipath_filedata *)(fp)->private_data)->subport -#define tidcursor_fp(fp) \ - ((struct ipath_filedata *)(fp)->private_data)->tidcursor -#define user_sdma_queue_fp(fp) \ - ((struct ipath_filedata *)(fp)->private_data)->pq - -/* - * values for ipath_flags - */ - /* chip can report link latency (IB 1.2) */ -#define IPATH_HAS_LINK_LATENCY 0x1 - /* The chip is up and initted */ -#define IPATH_INITTED 0x2 - /* set if any user code has set kr_rcvhdrsize */ -#define IPATH_RCVHDRSZ_SET 0x4 - /* The chip is present and valid for accesses */ -#define IPATH_PRESENT 0x8 - /* HT link0 is only 8 bits wide, ignore upper byte crc - * errors, etc. */ -#define IPATH_8BIT_IN_HT0 0x10 - /* HT link1 is only 8 bits wide, ignore upper byte crc - * errors, etc. */ -#define IPATH_8BIT_IN_HT1 0x20 - /* The link is down */ -#define IPATH_LINKDOWN 0x40 - /* The link level is up (0x11) */ -#define IPATH_LINKINIT 0x80 - /* The link is in the armed (0x21) state */ -#define IPATH_LINKARMED 0x100 - /* The link is in the active (0x31) state */ -#define IPATH_LINKACTIVE 0x200 - /* link current state is unknown */ -#define IPATH_LINKUNK 0x400 - /* Write combining flush needed for PIO */ -#define IPATH_PIO_FLUSH_WC 0x1000 - /* DMA Receive tail pointer */ -#define IPATH_NODMA_RTAIL 0x2000 - /* no IB cable, or no device on IB cable */ -#define IPATH_NOCABLE 0x4000 - /* Supports port zero per packet receive interrupts via - * GPIO */ -#define IPATH_GPIO_INTR 0x8000 - /* uses the coded 4byte TID, not 8 byte */ -#define IPATH_4BYTE_TID 0x10000 - /* packet/word counters are 32 bit, else those 4 counters - * are 64bit */ -#define IPATH_32BITCOUNTERS 0x20000 - /* Interrupt register is 64 bits */ -#define IPATH_INTREG_64 0x40000 - /* can miss port0 rx interrupts */ -#define IPATH_DISABLED 0x80000 /* administratively disabled */ - /* Use GPIO interrupts for new counters */ -#define IPATH_GPIO_ERRINTRS 0x100000 -#define IPATH_SWAP_PIOBUFS 0x200000 - /* Supports Send DMA */ -#define IPATH_HAS_SEND_DMA 0x400000 - /* Supports Send Count (not just word count) in PBC */ -#define IPATH_HAS_PBC_CNT 0x800000 - /* Suppress heartbeat, even if turning off loopback */ -#define IPATH_NO_HRTBT 0x1000000 -#define IPATH_HAS_THRESH_UPDATE 0x4000000 -#define IPATH_HAS_MULT_IB_SPEED 0x8000000 -#define IPATH_IB_AUTONEG_INPROG 0x10000000 -#define IPATH_IB_AUTONEG_FAILED 0x20000000 - /* Linkdown-disable intentionally, Do not attempt to bring up */ -#define IPATH_IB_LINK_DISABLED 0x40000000 -#define IPATH_IB_FORCE_NOTIFY 0x80000000 /* force notify on next ib change */ - -/* Bits in GPIO for the added interrupts */ -#define IPATH_GPIO_PORT0_BIT 2 -#define IPATH_GPIO_RXUVL_BIT 3 -#define IPATH_GPIO_OVRUN_BIT 4 -#define IPATH_GPIO_LLI_BIT 5 -#define IPATH_GPIO_ERRINTR_MASK 0x38 - -/* portdata flag bit offsets */ - /* waiting for a packet to arrive */ -#define IPATH_PORT_WAITING_RCV 2 - /* master has not finished initializing */ -#define IPATH_PORT_MASTER_UNINIT 4 - /* waiting for an urgent packet to arrive */ -#define IPATH_PORT_WAITING_URG 5 - -/* free up any allocated data at closes */ -void ipath_free_data(struct ipath_portdata *dd); -u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32, u32 *); -void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, - unsigned len, int avail); -void ipath_init_iba6110_funcs(struct ipath_devdata *); -void ipath_get_eeprom_info(struct ipath_devdata *); -int ipath_update_eeprom_log(struct ipath_devdata *dd); -void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr); -u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); -void ipath_disarm_senderrbufs(struct ipath_devdata *); -void ipath_force_pio_avail_update(struct ipath_devdata *); -void signal_ib_event(struct ipath_devdata *dd, enum ib_event_type ev); - -/* - * Set LED override, only the two LSBs have "public" meaning, but - * any non-zero value substitutes them for the Link and LinkTrain - * LED states. - */ -#define IPATH_LED_PHYS 1 /* Physical (linktraining) GREEN LED */ -#define IPATH_LED_LOG 2 /* Logical (link) YELLOW LED */ -void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val); - -/* send dma routines */ -int setup_sdma(struct ipath_devdata *); -void teardown_sdma(struct ipath_devdata *); -void ipath_restart_sdma(struct ipath_devdata *); -void ipath_sdma_intr(struct ipath_devdata *); -int ipath_sdma_verbs_send(struct ipath_devdata *, struct ipath_sge_state *, - u32, struct ipath_verbs_txreq *); -/* ipath_sdma_lock should be locked before calling this. */ -int ipath_sdma_make_progress(struct ipath_devdata *dd); - -/* must be called under ipath_sdma_lock */ -static inline u16 ipath_sdma_descq_freecnt(const struct ipath_devdata *dd) -{ - return dd->ipath_sdma_descq_cnt - - (dd->ipath_sdma_descq_added - dd->ipath_sdma_descq_removed) - - 1 - dd->ipath_sdma_desc_nreserved; -} - -static inline void ipath_sdma_desc_reserve(struct ipath_devdata *dd, u16 cnt) -{ - dd->ipath_sdma_desc_nreserved += cnt; -} - -static inline void ipath_sdma_desc_unreserve(struct ipath_devdata *dd, u16 cnt) -{ - dd->ipath_sdma_desc_nreserved -= cnt; -} - -/* - * number of words used for protocol header if not set by ipath_userinit(); - */ -#define IPATH_DFLT_RCVHDRSIZE 9 - -int ipath_get_user_pages(unsigned long, size_t, struct page **); -void ipath_release_user_pages(struct page **, size_t); -void ipath_release_user_pages_on_close(struct page **, size_t); -int ipath_eeprom_read(struct ipath_devdata *, u8, void *, int); -int ipath_eeprom_write(struct ipath_devdata *, u8, const void *, int); -int ipath_tempsense_read(struct ipath_devdata *, u8 regnum); -int ipath_tempsense_write(struct ipath_devdata *, u8 regnum, u8 data); - -/* these are used for the registers that vary with port */ -void ipath_write_kreg_port(const struct ipath_devdata *, ipath_kreg, - unsigned, u64); - -/* - * We could have a single register get/put routine, that takes a group type, - * but this is somewhat clearer and cleaner. It also gives us some error - * checking. 64 bit register reads should always work, but are inefficient - * on opteron (the northbridge always generates 2 separate HT 32 bit reads), - * so we use kreg32 wherever possible. User register and counter register - * reads are always 32 bit reads, so only one form of those routines. - */ - -/* - * At the moment, none of the s-registers are writable, so no - * ipath_write_sreg(). - */ - -/** - * ipath_read_ureg32 - read 32-bit virtualized per-port register - * @dd: device - * @regno: register number - * @port: port number - * - * Return the contents of a register that is virtualized to be per port. - * Returns -1 on errors (not distinguishable from valid contents at - * runtime; we may add a separate error variable at some point). - */ -static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd, - ipath_ureg regno, int port) -{ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) - return 0; - - return readl(regno + (u64 __iomem *) - (dd->ipath_uregbase + - (char __iomem *)dd->ipath_kregbase + - dd->ipath_ureg_align * port)); -} - -/** - * ipath_write_ureg - write 32-bit virtualized per-port register - * @dd: device - * @regno: register number - * @value: value - * @port: port - * - * Write the contents of a register that is virtualized to be per port. - */ -static inline void ipath_write_ureg(const struct ipath_devdata *dd, - ipath_ureg regno, u64 value, int port) -{ - u64 __iomem *ubase = (u64 __iomem *) - (dd->ipath_uregbase + (char __iomem *) dd->ipath_kregbase + - dd->ipath_ureg_align * port); - if (dd->ipath_kregbase) - writeq(value, &ubase[regno]); -} - -static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd, - ipath_kreg regno) -{ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) - return -1; - return readl((u32 __iomem *) & dd->ipath_kregbase[regno]); -} - -static inline u64 ipath_read_kreg64(const struct ipath_devdata *dd, - ipath_kreg regno) -{ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) - return -1; - - return readq(&dd->ipath_kregbase[regno]); -} - -static inline void ipath_write_kreg(const struct ipath_devdata *dd, - ipath_kreg regno, u64 value) -{ - if (dd->ipath_kregbase) - writeq(value, &dd->ipath_kregbase[regno]); -} - -static inline u64 ipath_read_creg(const struct ipath_devdata *dd, - ipath_sreg regno) -{ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) - return 0; - - return readq(regno + (u64 __iomem *) - (dd->ipath_cregbase + - (char __iomem *)dd->ipath_kregbase)); -} - -static inline u32 ipath_read_creg32(const struct ipath_devdata *dd, - ipath_sreg regno) -{ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) - return 0; - return readl(regno + (u64 __iomem *) - (dd->ipath_cregbase + - (char __iomem *)dd->ipath_kregbase)); -} - -static inline void ipath_write_creg(const struct ipath_devdata *dd, - ipath_creg regno, u64 value) -{ - if (dd->ipath_kregbase) - writeq(value, regno + (u64 __iomem *) - (dd->ipath_cregbase + - (char __iomem *)dd->ipath_kregbase)); -} - -static inline void ipath_clear_rcvhdrtail(const struct ipath_portdata *pd) -{ - *((u64 *) pd->port_rcvhdrtail_kvaddr) = 0ULL; -} - -static inline u32 ipath_get_rcvhdrtail(const struct ipath_portdata *pd) -{ - return (u32) le64_to_cpu(*((volatile __le64 *) - pd->port_rcvhdrtail_kvaddr)); -} - -static inline u32 ipath_get_hdrqtail(const struct ipath_portdata *pd) -{ - const struct ipath_devdata *dd = pd->port_dd; - u32 hdrqtail; - - if (dd->ipath_flags & IPATH_NODMA_RTAIL) { - __le32 *rhf_addr; - u32 seq; - - rhf_addr = (__le32 *) pd->port_rcvhdrq + - pd->port_head + dd->ipath_rhf_offset; - seq = ipath_hdrget_seq(rhf_addr); - hdrqtail = pd->port_head; - if (seq == pd->port_seq_cnt) - hdrqtail++; - } else - hdrqtail = ipath_get_rcvhdrtail(pd); - - return hdrqtail; -} - -static inline u64 ipath_read_ireg(const struct ipath_devdata *dd, ipath_kreg r) -{ - return (dd->ipath_flags & IPATH_INTREG_64) ? - ipath_read_kreg64(dd, r) : ipath_read_kreg32(dd, r); -} - -/* - * from contents of IBCStatus (or a saved copy), return linkstate - * Report ACTIVE_DEFER as ACTIVE, because we treat them the same - * everywhere, anyway (and should be, for almost all purposes). - */ -static inline u32 ipath_ib_linkstate(struct ipath_devdata *dd, u64 ibcs) -{ - u32 state = (u32)(ibcs >> dd->ibcs_ls_shift) & - INFINIPATH_IBCS_LINKSTATE_MASK; - if (state == INFINIPATH_IBCS_L_STATE_ACT_DEFER) - state = INFINIPATH_IBCS_L_STATE_ACTIVE; - return state; -} - -/* from contents of IBCStatus (or a saved copy), return linktrainingstate */ -static inline u32 ipath_ib_linktrstate(struct ipath_devdata *dd, u64 ibcs) -{ - return (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & - dd->ibcs_lts_mask; -} - -/* - * from contents of IBCStatus (or a saved copy), return logical link state - * combination of link state and linktraining state (down, active, init, - * arm, etc. - */ -static inline u32 ipath_ib_state(struct ipath_devdata *dd, u64 ibcs) -{ - u32 ibs; - ibs = (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & - dd->ibcs_lts_mask; - ibs |= (u32)(ibcs & - (INFINIPATH_IBCS_LINKSTATE_MASK << dd->ibcs_ls_shift)); - return ibs; -} - -/* - * sysfs interface. - */ - -struct device_driver; - -extern const char ib_ipath_version[]; - -extern const struct attribute_group *ipath_driver_attr_groups[]; - -int ipath_device_create_group(struct device *, struct ipath_devdata *); -void ipath_device_remove_group(struct device *, struct ipath_devdata *); -int ipath_expose_reset(struct device *); - -int ipath_init_ipathfs(void); -void ipath_exit_ipathfs(void); -int ipathfs_add_device(struct ipath_devdata *); -int ipathfs_remove_device(struct ipath_devdata *); - -/* - * dma_addr wrappers - all 0's invalid for hw - */ -dma_addr_t ipath_map_page(struct pci_dev *, struct page *, unsigned long, - size_t, int); -dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int); -const char *ipath_get_unit_name(int unit); - -/* - * Flush write combining store buffers (if present) and perform a write - * barrier. - */ -#if defined(CONFIG_X86_64) -#define ipath_flush_wc() asm volatile("sfence" ::: "memory") -#else -#define ipath_flush_wc() wmb() -#endif - -extern unsigned ipath_debug; /* debugging bit mask */ -extern unsigned ipath_linkrecovery; -extern unsigned ipath_mtu4096; -extern struct mutex ipath_mutex; - -#define IPATH_DRV_NAME "ib_ipath" -#define IPATH_MAJOR 233 -#define IPATH_USER_MINOR_BASE 0 -#define IPATH_DIAGPKT_MINOR 127 -#define IPATH_DIAG_MINOR_BASE 129 -#define IPATH_NMINORS 255 - -#define ipath_dev_err(dd,fmt,...) \ - do { \ - const struct ipath_devdata *__dd = (dd); \ - if (__dd->pcidev) \ - dev_err(&__dd->pcidev->dev, "%s: " fmt, \ - ipath_get_unit_name(__dd->ipath_unit), \ - ##__VA_ARGS__); \ - else \ - printk(KERN_ERR IPATH_DRV_NAME ": %s: " fmt, \ - ipath_get_unit_name(__dd->ipath_unit), \ - ##__VA_ARGS__); \ - } while (0) - -#if _IPATH_DEBUGGING - -# define __IPATH_DBG_WHICH(which,fmt,...) \ - do { \ - if (unlikely(ipath_debug & (which))) \ - printk(KERN_DEBUG IPATH_DRV_NAME ": %s: " fmt, \ - __func__,##__VA_ARGS__); \ - } while(0) - -# define ipath_dbg(fmt,...) \ - __IPATH_DBG_WHICH(__IPATH_DBG,fmt,##__VA_ARGS__) -# define ipath_cdbg(which,fmt,...) \ - __IPATH_DBG_WHICH(__IPATH_##which##DBG,fmt,##__VA_ARGS__) - -#else /* ! _IPATH_DEBUGGING */ - -# define ipath_dbg(fmt,...) -# define ipath_cdbg(which,fmt,...) - -#endif /* _IPATH_DEBUGGING */ - -/* - * this is used for formatting hw error messages... - */ -struct ipath_hwerror_msgs { - u64 mask; - const char *msg; -}; - -#define INFINIPATH_HWE_MSG(a, b) { .mask = INFINIPATH_HWE_##a, .msg = b } - -/* in ipath_intr.c... */ -void ipath_format_hwerrors(u64 hwerrs, - const struct ipath_hwerror_msgs *hwerrmsgs, - size_t nhwerrmsgs, - char *msg, size_t lmsg); - -#endif /* _IPATH_KERNEL_H */ diff --git a/drivers/staging/rdma/ipath/ipath_keys.c b/drivers/staging/rdma/ipath/ipath_keys.c deleted file mode 100644 index c0e933fec218..000000000000 --- a/drivers/staging/rdma/ipath/ipath_keys.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -/** - * ipath_alloc_lkey - allocate an lkey - * @rkt: lkey table in which to allocate the lkey - * @mr: memory region that this lkey protects - * - * Returns 1 if successful, otherwise returns 0. - */ - -int ipath_alloc_lkey(struct ipath_lkey_table *rkt, struct ipath_mregion *mr) -{ - unsigned long flags; - u32 r; - u32 n; - int ret; - - spin_lock_irqsave(&rkt->lock, flags); - - /* Find the next available LKEY */ - r = n = rkt->next; - for (;;) { - if (rkt->table[r] == NULL) - break; - r = (r + 1) & (rkt->max - 1); - if (r == n) { - spin_unlock_irqrestore(&rkt->lock, flags); - ipath_dbg("LKEY table full\n"); - ret = 0; - goto bail; - } - } - rkt->next = (r + 1) & (rkt->max - 1); - /* - * Make sure lkey is never zero which is reserved to indicate an - * unrestricted LKEY. - */ - rkt->gen++; - mr->lkey = (r << (32 - ib_ipath_lkey_table_size)) | - ((((1 << (24 - ib_ipath_lkey_table_size)) - 1) & rkt->gen) - << 8); - if (mr->lkey == 0) { - mr->lkey |= 1 << 8; - rkt->gen++; - } - rkt->table[r] = mr; - spin_unlock_irqrestore(&rkt->lock, flags); - - ret = 1; - -bail: - return ret; -} - -/** - * ipath_free_lkey - free an lkey - * @rkt: table from which to free the lkey - * @lkey: lkey id to free - */ -void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey) -{ - unsigned long flags; - u32 r; - - if (lkey == 0) - return; - r = lkey >> (32 - ib_ipath_lkey_table_size); - spin_lock_irqsave(&rkt->lock, flags); - rkt->table[r] = NULL; - spin_unlock_irqrestore(&rkt->lock, flags); -} - -/** - * ipath_lkey_ok - check IB SGE for validity and initialize - * @rkt: table containing lkey to check SGE against - * @isge: outgoing internal SGE - * @sge: SGE to check - * @acc: access flags - * - * Return 1 if valid and successful, otherwise returns 0. - * - * Check the IB SGE for validity and initialize our internal version - * of it. - */ -int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, - struct ib_sge *sge, int acc) -{ - struct ipath_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table; - struct ipath_mregion *mr; - unsigned n, m; - size_t off; - int ret; - - /* - * We use LKEY == zero for kernel virtual addresses - * (see ipath_get_dma_mr and ipath_dma.c). - */ - if (sge->lkey == 0) { - /* always a kernel port, no locking needed */ - struct ipath_pd *pd = to_ipd(qp->ibqp.pd); - - if (pd->user) { - ret = 0; - goto bail; - } - isge->mr = NULL; - isge->vaddr = (void *) sge->addr; - isge->length = sge->length; - isge->sge_length = sge->length; - ret = 1; - goto bail; - } - mr = rkt->table[(sge->lkey >> (32 - ib_ipath_lkey_table_size))]; - if (unlikely(mr == NULL || mr->lkey != sge->lkey || - qp->ibqp.pd != mr->pd)) { - ret = 0; - goto bail; - } - - off = sge->addr - mr->user_base; - if (unlikely(sge->addr < mr->user_base || - off + sge->length > mr->length || - (mr->access_flags & acc) != acc)) { - ret = 0; - goto bail; - } - - off += mr->offset; - m = 0; - n = 0; - while (off >= mr->map[m]->segs[n].length) { - off -= mr->map[m]->segs[n].length; - n++; - if (n >= IPATH_SEGSZ) { - m++; - n = 0; - } - } - isge->mr = mr; - isge->vaddr = mr->map[m]->segs[n].vaddr + off; - isge->length = mr->map[m]->segs[n].length - off; - isge->sge_length = sge->length; - isge->m = m; - isge->n = n; - - ret = 1; - -bail: - return ret; -} - -/** - * ipath_rkey_ok - check the IB virtual address, length, and RKEY - * @dev: infiniband device - * @ss: SGE state - * @len: length of data - * @vaddr: virtual address to place data - * @rkey: rkey to check - * @acc: access flags - * - * Return 1 if successful, otherwise 0. - */ -int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, - u32 len, u64 vaddr, u32 rkey, int acc) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_lkey_table *rkt = &dev->lk_table; - struct ipath_sge *sge = &ss->sge; - struct ipath_mregion *mr; - unsigned n, m; - size_t off; - int ret; - - /* - * We use RKEY == zero for kernel virtual addresses - * (see ipath_get_dma_mr and ipath_dma.c). - */ - if (rkey == 0) { - /* always a kernel port, no locking needed */ - struct ipath_pd *pd = to_ipd(qp->ibqp.pd); - - if (pd->user) { - ret = 0; - goto bail; - } - sge->mr = NULL; - sge->vaddr = (void *) vaddr; - sge->length = len; - sge->sge_length = len; - ss->sg_list = NULL; - ss->num_sge = 1; - ret = 1; - goto bail; - } - - mr = rkt->table[(rkey >> (32 - ib_ipath_lkey_table_size))]; - if (unlikely(mr == NULL || mr->lkey != rkey || - qp->ibqp.pd != mr->pd)) { - ret = 0; - goto bail; - } - - off = vaddr - mr->iova; - if (unlikely(vaddr < mr->iova || off + len > mr->length || - (mr->access_flags & acc) == 0)) { - ret = 0; - goto bail; - } - - off += mr->offset; - m = 0; - n = 0; - while (off >= mr->map[m]->segs[n].length) { - off -= mr->map[m]->segs[n].length; - n++; - if (n >= IPATH_SEGSZ) { - m++; - n = 0; - } - } - sge->mr = mr; - sge->vaddr = mr->map[m]->segs[n].vaddr + off; - sge->length = mr->map[m]->segs[n].length - off; - sge->sge_length = len; - sge->m = m; - sge->n = n; - ss->sg_list = NULL; - ss->num_sge = 1; - - ret = 1; - -bail: - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_mad.c b/drivers/staging/rdma/ipath/ipath_mad.c deleted file mode 100644 index ad3a926ab3c5..000000000000 --- a/drivers/staging/rdma/ipath/ipath_mad.c +++ /dev/null @@ -1,1521 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "ipath_kernel.h" -#include "ipath_verbs.h" -#include "ipath_common.h" - -#define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004) -#define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008) -#define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C) -#define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C) - -static int reply(struct ib_smp *smp) -{ - /* - * The verbs framework will handle the directed/LID route - * packet changes. - */ - smp->method = IB_MGMT_METHOD_GET_RESP; - if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) - smp->status |= IB_SMP_DIRECTION; - return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; -} - -static int recv_subn_get_nodedescription(struct ib_smp *smp, - struct ib_device *ibdev) -{ - if (smp->attr_mod) - smp->status |= IB_SMP_INVALID_FIELD; - - memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); - - return reply(smp); -} - -struct nodeinfo { - u8 base_version; - u8 class_version; - u8 node_type; - u8 num_ports; - __be64 sys_guid; - __be64 node_guid; - __be64 port_guid; - __be16 partition_cap; - __be16 device_id; - __be32 revision; - u8 local_port_num; - u8 vendor_id[3]; -} __attribute__ ((packed)); - -static int recv_subn_get_nodeinfo(struct ib_smp *smp, - struct ib_device *ibdev, u8 port) -{ - struct nodeinfo *nip = (struct nodeinfo *)&smp->data; - struct ipath_devdata *dd = to_idev(ibdev)->dd; - u32 vendor, majrev, minrev; - - /* GUID 0 is illegal */ - if (smp->attr_mod || (dd->ipath_guid == 0)) - smp->status |= IB_SMP_INVALID_FIELD; - - nip->base_version = 1; - nip->class_version = 1; - nip->node_type = 1; /* channel adapter */ - /* - * XXX The num_ports value will need a layer function to get - * the value if we ever have more than one IB port on a chip. - * We will also need to get the GUID for the port. - */ - nip->num_ports = ibdev->phys_port_cnt; - /* This is already in network order */ - nip->sys_guid = to_idev(ibdev)->sys_image_guid; - nip->node_guid = dd->ipath_guid; - nip->port_guid = dd->ipath_guid; - nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd)); - nip->device_id = cpu_to_be16(dd->ipath_deviceid); - majrev = dd->ipath_majrev; - minrev = dd->ipath_minrev; - nip->revision = cpu_to_be32((majrev << 16) | minrev); - nip->local_port_num = port; - vendor = dd->ipath_vendorid; - nip->vendor_id[0] = IPATH_SRC_OUI_1; - nip->vendor_id[1] = IPATH_SRC_OUI_2; - nip->vendor_id[2] = IPATH_SRC_OUI_3; - - return reply(smp); -} - -static int recv_subn_get_guidinfo(struct ib_smp *smp, - struct ib_device *ibdev) -{ - u32 startgx = 8 * be32_to_cpu(smp->attr_mod); - __be64 *p = (__be64 *) smp->data; - - /* 32 blocks of 8 64-bit GUIDs per block */ - - memset(smp->data, 0, sizeof(smp->data)); - - /* - * We only support one GUID for now. If this changes, the - * portinfo.guid_cap field needs to be updated too. - */ - if (startgx == 0) { - __be64 g = to_idev(ibdev)->dd->ipath_guid; - if (g == 0) - /* GUID 0 is illegal */ - smp->status |= IB_SMP_INVALID_FIELD; - else - /* The first is a copy of the read-only HW GUID. */ - *p = g; - } else - smp->status |= IB_SMP_INVALID_FIELD; - - return reply(smp); -} - -static void set_link_width_enabled(struct ipath_devdata *dd, u32 w) -{ - (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, w); -} - -static void set_link_speed_enabled(struct ipath_devdata *dd, u32 s) -{ - (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, s); -} - -static int get_overrunthreshold(struct ipath_devdata *dd) -{ - return (dd->ipath_ibcctrl >> - INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; -} - -/** - * set_overrunthreshold - set the overrun threshold - * @dd: the infinipath device - * @n: the new threshold - * - * Note that this will only take effect when the link state changes. - */ -static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n) -{ - unsigned v; - - v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; - if (v != n) { - dd->ipath_ibcctrl &= - ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK << - INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT); - dd->ipath_ibcctrl |= - (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - } - return 0; -} - -static int get_phyerrthreshold(struct ipath_devdata *dd) -{ - return (dd->ipath_ibcctrl >> - INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; -} - -/** - * set_phyerrthreshold - set the physical error threshold - * @dd: the infinipath device - * @n: the new threshold - * - * Note that this will only take effect when the link state changes. - */ -static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n) -{ - unsigned v; - - v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & - INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; - if (v != n) { - dd->ipath_ibcctrl &= - ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK << - INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT); - dd->ipath_ibcctrl |= - (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - } - return 0; -} - -/** - * get_linkdowndefaultstate - get the default linkdown state - * @dd: the infinipath device - * - * Returns zero if the default is POLL, 1 if the default is SLEEP. - */ -static int get_linkdowndefaultstate(struct ipath_devdata *dd) -{ - return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE); -} - -static int recv_subn_get_portinfo(struct ib_smp *smp, - struct ib_device *ibdev, u8 port) -{ - struct ipath_ibdev *dev; - struct ipath_devdata *dd; - struct ib_port_info *pip = (struct ib_port_info *)smp->data; - u16 lid; - u8 ibcstat; - u8 mtu; - int ret; - - if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) { - smp->status |= IB_SMP_INVALID_FIELD; - ret = reply(smp); - goto bail; - } - - dev = to_idev(ibdev); - dd = dev->dd; - - /* Clear all fields. Only set the non-zero fields. */ - memset(smp->data, 0, sizeof(smp->data)); - - /* Only return the mkey if the protection field allows it. */ - if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey || - dev->mkeyprot == 0) - pip->mkey = dev->mkey; - pip->gid_prefix = dev->gid_prefix; - lid = dd->ipath_lid; - pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE; - pip->sm_lid = cpu_to_be16(dev->sm_lid); - pip->cap_mask = cpu_to_be32(dev->port_cap_flags); - /* pip->diag_code; */ - pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period); - pip->local_port_num = port; - pip->link_width_enabled = dd->ipath_link_width_enabled; - pip->link_width_supported = dd->ipath_link_width_supported; - pip->link_width_active = dd->ipath_link_width_active; - pip->linkspeed_portstate = dd->ipath_link_speed_supported << 4; - ibcstat = dd->ipath_lastibcstat; - /* map LinkState to IB portinfo values. */ - pip->linkspeed_portstate |= ipath_ib_linkstate(dd, ibcstat) + 1; - - pip->portphysstate_linkdown = - (ipath_cvt_physportstate[ibcstat & dd->ibcs_lts_mask] << 4) | - (get_linkdowndefaultstate(dd) ? 1 : 2); - pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dd->ipath_lmc; - pip->linkspeedactive_enabled = (dd->ipath_link_speed_active << 4) | - dd->ipath_link_speed_enabled; - switch (dd->ipath_ibmtu) { - case 4096: - mtu = IB_MTU_4096; - break; - case 2048: - mtu = IB_MTU_2048; - break; - case 1024: - mtu = IB_MTU_1024; - break; - case 512: - mtu = IB_MTU_512; - break; - case 256: - mtu = IB_MTU_256; - break; - default: /* oops, something is wrong */ - mtu = IB_MTU_2048; - break; - } - pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl; - pip->vlcap_inittype = 0x10; /* VLCap = VL0, InitType = 0 */ - pip->vl_high_limit = dev->vl_high_limit; - /* pip->vl_arb_high_cap; // only one VL */ - /* pip->vl_arb_low_cap; // only one VL */ - /* InitTypeReply = 0 */ - /* our mtu cap depends on whether 4K MTU enabled or not */ - pip->inittypereply_mtucap = ipath_mtu4096 ? IB_MTU_4096 : IB_MTU_2048; - /* HCAs ignore VLStallCount and HOQLife */ - /* pip->vlstallcnt_hoqlife; */ - pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */ - pip->mkey_violations = cpu_to_be16(dev->mkey_violations); - /* P_KeyViolations are counted by hardware. */ - pip->pkey_violations = - cpu_to_be16((ipath_get_cr_errpkey(dd) - - dev->z_pkey_violations) & 0xFFFF); - pip->qkey_violations = cpu_to_be16(dev->qkey_violations); - /* Only the hardware GUID is supported for now */ - pip->guid_cap = 1; - pip->clientrereg_resv_subnetto = dev->subnet_timeout; - /* 32.768 usec. response time (guessing) */ - pip->resv_resptimevalue = 3; - pip->localphyerrors_overrunerrors = - (get_phyerrthreshold(dd) << 4) | - get_overrunthreshold(dd); - /* pip->max_credit_hint; */ - if (dev->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { - u32 v; - - v = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LINKLATENCY); - pip->link_roundtrip_latency[0] = v >> 16; - pip->link_roundtrip_latency[1] = v >> 8; - pip->link_roundtrip_latency[2] = v; - } - - ret = reply(smp); - -bail: - return ret; -} - -/** - * get_pkeys - return the PKEY table for port 0 - * @dd: the infinipath device - * @pkeys: the pkey table is placed here - */ -static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys) -{ - /* always a kernel port, no locking needed */ - struct ipath_portdata *pd = dd->ipath_pd[0]; - - memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys)); - - return 0; -} - -static int recv_subn_get_pkeytable(struct ib_smp *smp, - struct ib_device *ibdev) -{ - u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); - u16 *p = (u16 *) smp->data; - __be16 *q = (__be16 *) smp->data; - - /* 64 blocks of 32 16-bit P_Key entries */ - - memset(smp->data, 0, sizeof(smp->data)); - if (startpx == 0) { - struct ipath_ibdev *dev = to_idev(ibdev); - unsigned i, n = ipath_get_npkeys(dev->dd); - - get_pkeys(dev->dd, p); - - for (i = 0; i < n; i++) - q[i] = cpu_to_be16(p[i]); - } else - smp->status |= IB_SMP_INVALID_FIELD; - - return reply(smp); -} - -static int recv_subn_set_guidinfo(struct ib_smp *smp, - struct ib_device *ibdev) -{ - /* The only GUID we support is the first read-only entry. */ - return recv_subn_get_guidinfo(smp, ibdev); -} - -/** - * set_linkdowndefaultstate - set the default linkdown state - * @dd: the infinipath device - * @sleep: the new state - * - * Note that this will only take effect when the link state changes. - */ -static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep) -{ - if (sleep) - dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; - else - dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, - dd->ipath_ibcctrl); - return 0; -} - -/** - * recv_subn_set_portinfo - set port information - * @smp: the incoming SM packet - * @ibdev: the infiniband device - * @port: the port on the device - * - * Set Portinfo (see ch. 14.2.5.6). - */ -static int recv_subn_set_portinfo(struct ib_smp *smp, - struct ib_device *ibdev, u8 port) -{ - struct ib_port_info *pip = (struct ib_port_info *)smp->data; - struct ib_event event; - struct ipath_ibdev *dev; - struct ipath_devdata *dd; - char clientrereg = 0; - u16 lid, smlid; - u8 lwe; - u8 lse; - u8 state; - u16 lstate; - u32 mtu; - int ret, ore; - - if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) - goto err; - - dev = to_idev(ibdev); - dd = dev->dd; - event.device = ibdev; - event.element.port_num = port; - - dev->mkey = pip->mkey; - dev->gid_prefix = pip->gid_prefix; - dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); - - lid = be16_to_cpu(pip->lid); - if (dd->ipath_lid != lid || - dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) { - /* Must be a valid unicast LID address. */ - if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) - goto err; - ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7); - event.event = IB_EVENT_LID_CHANGE; - ib_dispatch_event(&event); - } - - smlid = be16_to_cpu(pip->sm_lid); - if (smlid != dev->sm_lid) { - /* Must be a valid unicast LID address. */ - if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE) - goto err; - dev->sm_lid = smlid; - event.event = IB_EVENT_SM_CHANGE; - ib_dispatch_event(&event); - } - - /* Allow 1x or 4x to be set (see 14.2.6.6). */ - lwe = pip->link_width_enabled; - if (lwe) { - if (lwe == 0xFF) - lwe = dd->ipath_link_width_supported; - else if (lwe >= 16 || (lwe & ~dd->ipath_link_width_supported)) - goto err; - set_link_width_enabled(dd, lwe); - } - - /* Allow 2.5 or 5.0 Gbs. */ - lse = pip->linkspeedactive_enabled & 0xF; - if (lse) { - if (lse == 15) - lse = dd->ipath_link_speed_supported; - else if (lse >= 8 || (lse & ~dd->ipath_link_speed_supported)) - goto err; - set_link_speed_enabled(dd, lse); - } - - /* Set link down default state. */ - switch (pip->portphysstate_linkdown & 0xF) { - case 0: /* NOP */ - break; - case 1: /* SLEEP */ - if (set_linkdowndefaultstate(dd, 1)) - goto err; - break; - case 2: /* POLL */ - if (set_linkdowndefaultstate(dd, 0)) - goto err; - break; - default: - goto err; - } - - dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6; - dev->vl_high_limit = pip->vl_high_limit; - - switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) { - case IB_MTU_256: - mtu = 256; - break; - case IB_MTU_512: - mtu = 512; - break; - case IB_MTU_1024: - mtu = 1024; - break; - case IB_MTU_2048: - mtu = 2048; - break; - case IB_MTU_4096: - if (!ipath_mtu4096) - goto err; - mtu = 4096; - break; - default: - /* XXX We have already partially updated our state! */ - goto err; - } - ipath_set_mtu(dd, mtu); - - dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF; - - /* We only support VL0 */ - if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1) - goto err; - - if (pip->mkey_violations == 0) - dev->mkey_violations = 0; - - /* - * Hardware counter can't be reset so snapshot and subtract - * later. - */ - if (pip->pkey_violations == 0) - dev->z_pkey_violations = ipath_get_cr_errpkey(dd); - - if (pip->qkey_violations == 0) - dev->qkey_violations = 0; - - ore = pip->localphyerrors_overrunerrors; - if (set_phyerrthreshold(dd, (ore >> 4) & 0xF)) - goto err; - - if (set_overrunthreshold(dd, (ore & 0xF))) - goto err; - - dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; - - if (pip->clientrereg_resv_subnetto & 0x80) { - clientrereg = 1; - event.event = IB_EVENT_CLIENT_REREGISTER; - ib_dispatch_event(&event); - } - - /* - * Do the port state change now that the other link parameters - * have been set. - * Changing the port physical state only makes sense if the link - * is down or is being set to down. - */ - state = pip->linkspeed_portstate & 0xF; - lstate = (pip->portphysstate_linkdown >> 4) & 0xF; - if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) - goto err; - - /* - * Only state changes of DOWN, ARM, and ACTIVE are valid - * and must be in the correct state to take effect (see 7.2.6). - */ - switch (state) { - case IB_PORT_NOP: - if (lstate == 0) - break; - /* FALLTHROUGH */ - case IB_PORT_DOWN: - if (lstate == 0) - lstate = IPATH_IB_LINKDOWN_ONLY; - else if (lstate == 1) - lstate = IPATH_IB_LINKDOWN_SLEEP; - else if (lstate == 2) - lstate = IPATH_IB_LINKDOWN; - else if (lstate == 3) - lstate = IPATH_IB_LINKDOWN_DISABLE; - else - goto err; - ipath_set_linkstate(dd, lstate); - if (lstate == IPATH_IB_LINKDOWN_DISABLE) { - ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; - goto done; - } - ipath_wait_linkstate(dd, IPATH_LINKINIT | IPATH_LINKARMED | - IPATH_LINKACTIVE, 1000); - break; - case IB_PORT_ARMED: - ipath_set_linkstate(dd, IPATH_IB_LINKARM); - break; - case IB_PORT_ACTIVE: - ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE); - break; - default: - /* XXX We have already partially updated our state! */ - goto err; - } - - ret = recv_subn_get_portinfo(smp, ibdev, port); - - if (clientrereg) - pip->clientrereg_resv_subnetto |= 0x80; - - goto done; - -err: - smp->status |= IB_SMP_INVALID_FIELD; - ret = recv_subn_get_portinfo(smp, ibdev, port); - -done: - return ret; -} - -/** - * rm_pkey - decrecment the reference count for the given PKEY - * @dd: the infinipath device - * @key: the PKEY index - * - * Return true if this was the last reference and the hardware table entry - * needs to be changed. - */ -static int rm_pkey(struct ipath_devdata *dd, u16 key) -{ - int i; - int ret; - - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (dd->ipath_pkeys[i] != key) - continue; - if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) { - dd->ipath_pkeys[i] = 0; - ret = 1; - goto bail; - } - break; - } - - ret = 0; - -bail: - return ret; -} - -/** - * add_pkey - add the given PKEY to the hardware table - * @dd: the infinipath device - * @key: the PKEY - * - * Return an error code if unable to add the entry, zero if no change, - * or 1 if the hardware PKEY register needs to be updated. - */ -static int add_pkey(struct ipath_devdata *dd, u16 key) -{ - int i; - u16 lkey = key & 0x7FFF; - int any = 0; - int ret; - - if (lkey == 0x7FFF) { - ret = 0; - goto bail; - } - - /* Look for an empty slot or a matching PKEY. */ - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i]) { - any++; - continue; - } - /* If it matches exactly, try to increment the ref count */ - if (dd->ipath_pkeys[i] == key) { - if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) { - ret = 0; - goto bail; - } - /* Lost the race. Look for an empty slot below. */ - atomic_dec(&dd->ipath_pkeyrefs[i]); - any++; - } - /* - * It makes no sense to have both the limited and unlimited - * PKEY set at the same time since the unlimited one will - * disable the limited one. - */ - if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { - ret = -EEXIST; - goto bail; - } - } - if (!any) { - ret = -EBUSY; - goto bail; - } - for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { - if (!dd->ipath_pkeys[i] && - atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { - /* for ipathstats, etc. */ - ipath_stats.sps_pkeys[i] = lkey; - dd->ipath_pkeys[i] = key; - ret = 1; - goto bail; - } - } - ret = -EBUSY; - -bail: - return ret; -} - -/** - * set_pkeys - set the PKEY table for port 0 - * @dd: the infinipath device - * @pkeys: the PKEY table - */ -static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys, u8 port) -{ - struct ipath_portdata *pd; - int i; - int changed = 0; - - /* always a kernel port, no locking needed */ - pd = dd->ipath_pd[0]; - - for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { - u16 key = pkeys[i]; - u16 okey = pd->port_pkeys[i]; - - if (key == okey) - continue; - /* - * The value of this PKEY table entry is changing. - * Remove the old entry in the hardware's array of PKEYs. - */ - if (okey & 0x7FFF) - changed |= rm_pkey(dd, okey); - if (key & 0x7FFF) { - int ret = add_pkey(dd, key); - - if (ret < 0) - key = 0; - else - changed |= ret; - } - pd->port_pkeys[i] = key; - } - if (changed) { - u64 pkey; - struct ib_event event; - - pkey = (u64) dd->ipath_pkeys[0] | - ((u64) dd->ipath_pkeys[1] << 16) | - ((u64) dd->ipath_pkeys[2] << 32) | - ((u64) dd->ipath_pkeys[3] << 48); - ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n", - (unsigned long long) pkey); - ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, - pkey); - - event.event = IB_EVENT_PKEY_CHANGE; - event.device = &dd->verbs_dev->ibdev; - event.element.port_num = port; - ib_dispatch_event(&event); - } - return 0; -} - -static int recv_subn_set_pkeytable(struct ib_smp *smp, - struct ib_device *ibdev, u8 port) -{ - u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); - __be16 *p = (__be16 *) smp->data; - u16 *q = (u16 *) smp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - unsigned i, n = ipath_get_npkeys(dev->dd); - - for (i = 0; i < n; i++) - q[i] = be16_to_cpu(p[i]); - - if (startpx != 0 || set_pkeys(dev->dd, q, port) != 0) - smp->status |= IB_SMP_INVALID_FIELD; - - return recv_subn_get_pkeytable(smp, ibdev); -} - -static int recv_pma_get_classportinfo(struct ib_pma_mad *pmp) -{ - struct ib_class_port_info *p = - (struct ib_class_port_info *)pmp->data; - - memset(pmp->data, 0, sizeof(pmp->data)); - - if (pmp->mad_hdr.attr_mod != 0) - pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - - /* Indicate AllPortSelect is valid (only one port anyway) */ - p->capability_mask = cpu_to_be16(1 << 8); - p->base_version = 1; - p->class_version = 1; - /* - * Expected response time is 4.096 usec. * 2^18 == 1.073741824 - * sec. - */ - p->resp_time_value = 18; - - return reply((struct ib_smp *) pmp); -} - -/* - * The PortSamplesControl.CounterMasks field is an array of 3 bit fields - * which specify the N'th counter's capabilities. See ch. 16.1.3.2. - * We support 5 counters which only count the mandatory quantities. - */ -#define COUNTER_MASK(q, n) (q << ((9 - n) * 3)) -#define COUNTER_MASK0_9 cpu_to_be32(COUNTER_MASK(1, 0) | \ - COUNTER_MASK(1, 1) | \ - COUNTER_MASK(1, 2) | \ - COUNTER_MASK(1, 3) | \ - COUNTER_MASK(1, 4)) - -static int recv_pma_get_portsamplescontrol(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portsamplescontrol *p = - (struct ib_pma_portsamplescontrol *)pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_cregs const *crp = dev->dd->ipath_cregs; - unsigned long flags; - u8 port_select = p->port_select; - - memset(pmp->data, 0, sizeof(pmp->data)); - - p->port_select = port_select; - if (pmp->mad_hdr.attr_mod != 0 || - (port_select != port && port_select != 0xFF)) - pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - /* - * Ticks are 10x the link transfer period which for 2.5Gbs is 4 - * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample - * intervals are counted in ticks. Since we use Linux timers, that - * count in jiffies, we can't sample for less than 1000 ticks if HZ - * == 1000 (4000 ticks if HZ is 250). link_speed_active returns 2 for - * DDR, 1 for SDR, set the tick to 1 for DDR, 0 for SDR on chips that - * have hardware support for delaying packets. - */ - if (crp->cr_psstat) - p->tick = dev->dd->ipath_link_speed_active - 1; - else - p->tick = 250; /* 1 usec. */ - p->counter_width = 4; /* 32 bit counters */ - p->counter_mask0_9 = COUNTER_MASK0_9; - spin_lock_irqsave(&dev->pending_lock, flags); - if (crp->cr_psstat) - p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat); - else - p->sample_status = dev->pma_sample_status; - p->sample_start = cpu_to_be32(dev->pma_sample_start); - p->sample_interval = cpu_to_be32(dev->pma_sample_interval); - p->tag = cpu_to_be16(dev->pma_tag); - p->counter_select[0] = dev->pma_counter_select[0]; - p->counter_select[1] = dev->pma_counter_select[1]; - p->counter_select[2] = dev->pma_counter_select[2]; - p->counter_select[3] = dev->pma_counter_select[3]; - p->counter_select[4] = dev->pma_counter_select[4]; - spin_unlock_irqrestore(&dev->pending_lock, flags); - - return reply((struct ib_smp *) pmp); -} - -static int recv_pma_set_portsamplescontrol(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portsamplescontrol *p = - (struct ib_pma_portsamplescontrol *)pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_cregs const *crp = dev->dd->ipath_cregs; - unsigned long flags; - u8 status; - int ret; - - if (pmp->mad_hdr.attr_mod != 0 || - (p->port_select != port && p->port_select != 0xFF)) { - pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - ret = reply((struct ib_smp *) pmp); - goto bail; - } - - spin_lock_irqsave(&dev->pending_lock, flags); - if (crp->cr_psstat) - status = ipath_read_creg32(dev->dd, crp->cr_psstat); - else - status = dev->pma_sample_status; - if (status == IB_PMA_SAMPLE_STATUS_DONE) { - dev->pma_sample_start = be32_to_cpu(p->sample_start); - dev->pma_sample_interval = be32_to_cpu(p->sample_interval); - dev->pma_tag = be16_to_cpu(p->tag); - dev->pma_counter_select[0] = p->counter_select[0]; - dev->pma_counter_select[1] = p->counter_select[1]; - dev->pma_counter_select[2] = p->counter_select[2]; - dev->pma_counter_select[3] = p->counter_select[3]; - dev->pma_counter_select[4] = p->counter_select[4]; - if (crp->cr_psstat) { - ipath_write_creg(dev->dd, crp->cr_psinterval, - dev->pma_sample_interval); - ipath_write_creg(dev->dd, crp->cr_psstart, - dev->pma_sample_start); - } else - dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED; - } - spin_unlock_irqrestore(&dev->pending_lock, flags); - - ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port); - -bail: - return ret; -} - -static u64 get_counter(struct ipath_ibdev *dev, - struct ipath_cregs const *crp, - __be16 sel) -{ - u64 ret; - - switch (sel) { - case IB_PMA_PORT_XMIT_DATA: - ret = (crp->cr_psxmitdatacount) ? - ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) : - dev->ipath_sword; - break; - case IB_PMA_PORT_RCV_DATA: - ret = (crp->cr_psrcvdatacount) ? - ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) : - dev->ipath_rword; - break; - case IB_PMA_PORT_XMIT_PKTS: - ret = (crp->cr_psxmitpktscount) ? - ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) : - dev->ipath_spkts; - break; - case IB_PMA_PORT_RCV_PKTS: - ret = (crp->cr_psrcvpktscount) ? - ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) : - dev->ipath_rpkts; - break; - case IB_PMA_PORT_XMIT_WAIT: - ret = (crp->cr_psxmitwaitcount) ? - ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) : - dev->ipath_xmit_wait; - break; - default: - ret = 0; - } - - return ret; -} - -static int recv_pma_get_portsamplesresult(struct ib_pma_mad *pmp, - struct ib_device *ibdev) -{ - struct ib_pma_portsamplesresult *p = - (struct ib_pma_portsamplesresult *)pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_cregs const *crp = dev->dd->ipath_cregs; - u8 status; - int i; - - memset(pmp->data, 0, sizeof(pmp->data)); - p->tag = cpu_to_be16(dev->pma_tag); - if (crp->cr_psstat) - status = ipath_read_creg32(dev->dd, crp->cr_psstat); - else - status = dev->pma_sample_status; - p->sample_status = cpu_to_be16(status); - for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) - p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : - cpu_to_be32( - get_counter(dev, crp, dev->pma_counter_select[i])); - - return reply((struct ib_smp *) pmp); -} - -static int recv_pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, - struct ib_device *ibdev) -{ - struct ib_pma_portsamplesresult_ext *p = - (struct ib_pma_portsamplesresult_ext *)pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_cregs const *crp = dev->dd->ipath_cregs; - u8 status; - int i; - - memset(pmp->data, 0, sizeof(pmp->data)); - p->tag = cpu_to_be16(dev->pma_tag); - if (crp->cr_psstat) - status = ipath_read_creg32(dev->dd, crp->cr_psstat); - else - status = dev->pma_sample_status; - p->sample_status = cpu_to_be16(status); - /* 64 bits */ - p->extended_width = cpu_to_be32(0x80000000); - for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) - p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : - cpu_to_be64( - get_counter(dev, crp, dev->pma_counter_select[i])); - - return reply((struct ib_smp *) pmp); -} - -static int recv_pma_get_portcounters(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) - pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_verbs_counters cntrs; - u8 port_select = p->port_select; - - ipath_get_counters(dev->dd, &cntrs); - - /* Adjust counters for any resets done. */ - cntrs.symbol_error_counter -= dev->z_symbol_error_counter; - cntrs.link_error_recovery_counter -= - dev->z_link_error_recovery_counter; - cntrs.link_downed_counter -= dev->z_link_downed_counter; - cntrs.port_rcv_errors += dev->rcv_errors; - cntrs.port_rcv_errors -= dev->z_port_rcv_errors; - cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors; - cntrs.port_xmit_discards -= dev->z_port_xmit_discards; - cntrs.port_xmit_data -= dev->z_port_xmit_data; - cntrs.port_rcv_data -= dev->z_port_rcv_data; - cntrs.port_xmit_packets -= dev->z_port_xmit_packets; - cntrs.port_rcv_packets -= dev->z_port_rcv_packets; - cntrs.local_link_integrity_errors -= - dev->z_local_link_integrity_errors; - cntrs.excessive_buffer_overrun_errors -= - dev->z_excessive_buffer_overrun_errors; - cntrs.vl15_dropped -= dev->z_vl15_dropped; - cntrs.vl15_dropped += dev->n_vl15_dropped; - - memset(pmp->data, 0, sizeof(pmp->data)); - - p->port_select = port_select; - if (pmp->mad_hdr.attr_mod != 0 || - (port_select != port && port_select != 0xFF)) - pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - - if (cntrs.symbol_error_counter > 0xFFFFUL) - p->symbol_error_counter = cpu_to_be16(0xFFFF); - else - p->symbol_error_counter = - cpu_to_be16((u16)cntrs.symbol_error_counter); - if (cntrs.link_error_recovery_counter > 0xFFUL) - p->link_error_recovery_counter = 0xFF; - else - p->link_error_recovery_counter = - (u8)cntrs.link_error_recovery_counter; - if (cntrs.link_downed_counter > 0xFFUL) - p->link_downed_counter = 0xFF; - else - p->link_downed_counter = (u8)cntrs.link_downed_counter; - if (cntrs.port_rcv_errors > 0xFFFFUL) - p->port_rcv_errors = cpu_to_be16(0xFFFF); - else - p->port_rcv_errors = - cpu_to_be16((u16) cntrs.port_rcv_errors); - if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) - p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); - else - p->port_rcv_remphys_errors = - cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); - if (cntrs.port_xmit_discards > 0xFFFFUL) - p->port_xmit_discards = cpu_to_be16(0xFFFF); - else - p->port_xmit_discards = - cpu_to_be16((u16)cntrs.port_xmit_discards); - if (cntrs.local_link_integrity_errors > 0xFUL) - cntrs.local_link_integrity_errors = 0xFUL; - if (cntrs.excessive_buffer_overrun_errors > 0xFUL) - cntrs.excessive_buffer_overrun_errors = 0xFUL; - p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | - cntrs.excessive_buffer_overrun_errors; - if (cntrs.vl15_dropped > 0xFFFFUL) - p->vl15_dropped = cpu_to_be16(0xFFFF); - else - p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); - if (cntrs.port_xmit_data > 0xFFFFFFFFUL) - p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); - else - p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); - if (cntrs.port_rcv_data > 0xFFFFFFFFUL) - p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); - else - p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); - if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) - p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); - else - p->port_xmit_packets = - cpu_to_be32((u32)cntrs.port_xmit_packets); - if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) - p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); - else - p->port_rcv_packets = - cpu_to_be32((u32) cntrs.port_rcv_packets); - - return reply((struct ib_smp *) pmp); -} - -static int recv_pma_get_portcounters_ext(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portcounters_ext *p = - (struct ib_pma_portcounters_ext *)pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - u64 swords, rwords, spkts, rpkts, xwait; - u8 port_select = p->port_select; - - ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, - &rpkts, &xwait); - - /* Adjust counters for any resets done. */ - swords -= dev->z_port_xmit_data; - rwords -= dev->z_port_rcv_data; - spkts -= dev->z_port_xmit_packets; - rpkts -= dev->z_port_rcv_packets; - - memset(pmp->data, 0, sizeof(pmp->data)); - - p->port_select = port_select; - if (pmp->mad_hdr.attr_mod != 0 || - (port_select != port && port_select != 0xFF)) - pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - - p->port_xmit_data = cpu_to_be64(swords); - p->port_rcv_data = cpu_to_be64(rwords); - p->port_xmit_packets = cpu_to_be64(spkts); - p->port_rcv_packets = cpu_to_be64(rpkts); - p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit); - p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv); - p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit); - p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv); - - return reply((struct ib_smp *) pmp); -} - -static int recv_pma_set_portcounters(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) - pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_verbs_counters cntrs; - - /* - * Since the HW doesn't support clearing counters, we save the - * current count and subtract it from future responses. - */ - ipath_get_counters(dev->dd, &cntrs); - - if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) - dev->z_symbol_error_counter = cntrs.symbol_error_counter; - - if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) - dev->z_link_error_recovery_counter = - cntrs.link_error_recovery_counter; - - if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) - dev->z_link_downed_counter = cntrs.link_downed_counter; - - if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) - dev->z_port_rcv_errors = - cntrs.port_rcv_errors + dev->rcv_errors; - - if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) - dev->z_port_rcv_remphys_errors = - cntrs.port_rcv_remphys_errors; - - if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) - dev->z_port_xmit_discards = cntrs.port_xmit_discards; - - if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) - dev->z_local_link_integrity_errors = - cntrs.local_link_integrity_errors; - - if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) - dev->z_excessive_buffer_overrun_errors = - cntrs.excessive_buffer_overrun_errors; - - if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { - dev->n_vl15_dropped = 0; - dev->z_vl15_dropped = cntrs.vl15_dropped; - } - - if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) - dev->z_port_xmit_data = cntrs.port_xmit_data; - - if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) - dev->z_port_rcv_data = cntrs.port_rcv_data; - - if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) - dev->z_port_xmit_packets = cntrs.port_xmit_packets; - - if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) - dev->z_port_rcv_packets = cntrs.port_rcv_packets; - - return recv_pma_get_portcounters(pmp, ibdev, port); -} - -static int recv_pma_set_portcounters_ext(struct ib_pma_mad *pmp, - struct ib_device *ibdev, u8 port) -{ - struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) - pmp->data; - struct ipath_ibdev *dev = to_idev(ibdev); - u64 swords, rwords, spkts, rpkts, xwait; - - ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, - &rpkts, &xwait); - - if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) - dev->z_port_xmit_data = swords; - - if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) - dev->z_port_rcv_data = rwords; - - if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) - dev->z_port_xmit_packets = spkts; - - if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) - dev->z_port_rcv_packets = rpkts; - - if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) - dev->n_unicast_xmit = 0; - - if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) - dev->n_unicast_rcv = 0; - - if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) - dev->n_multicast_xmit = 0; - - if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) - dev->n_multicast_rcv = 0; - - return recv_pma_get_portcounters_ext(pmp, ibdev, port); -} - -static int process_subn(struct ib_device *ibdev, int mad_flags, - u8 port_num, const struct ib_mad *in_mad, - struct ib_mad *out_mad) -{ - struct ib_smp *smp = (struct ib_smp *)out_mad; - struct ipath_ibdev *dev = to_idev(ibdev); - int ret; - - *out_mad = *in_mad; - if (smp->class_version != 1) { - smp->status |= IB_SMP_UNSUP_VERSION; - ret = reply(smp); - goto bail; - } - - /* Is the mkey in the process of expiring? */ - if (dev->mkey_lease_timeout && - time_after_eq(jiffies, dev->mkey_lease_timeout)) { - /* Clear timeout and mkey protection field. */ - dev->mkey_lease_timeout = 0; - dev->mkeyprot = 0; - } - - /* - * M_Key checking depends on - * Portinfo:M_Key_protect_bits - */ - if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 && - dev->mkey != smp->mkey && - (smp->method == IB_MGMT_METHOD_SET || - (smp->method == IB_MGMT_METHOD_GET && - dev->mkeyprot >= 2))) { - if (dev->mkey_violations != 0xFFFF) - ++dev->mkey_violations; - if (dev->mkey_lease_timeout || - dev->mkey_lease_period == 0) { - ret = IB_MAD_RESULT_SUCCESS | - IB_MAD_RESULT_CONSUMED; - goto bail; - } - dev->mkey_lease_timeout = jiffies + - dev->mkey_lease_period * HZ; - /* Future: Generate a trap notice. */ - ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; - goto bail; - } else if (dev->mkey_lease_timeout) - dev->mkey_lease_timeout = 0; - - switch (smp->method) { - case IB_MGMT_METHOD_GET: - switch (smp->attr_id) { - case IB_SMP_ATTR_NODE_DESC: - ret = recv_subn_get_nodedescription(smp, ibdev); - goto bail; - case IB_SMP_ATTR_NODE_INFO: - ret = recv_subn_get_nodeinfo(smp, ibdev, port_num); - goto bail; - case IB_SMP_ATTR_GUID_INFO: - ret = recv_subn_get_guidinfo(smp, ibdev); - goto bail; - case IB_SMP_ATTR_PORT_INFO: - ret = recv_subn_get_portinfo(smp, ibdev, port_num); - goto bail; - case IB_SMP_ATTR_PKEY_TABLE: - ret = recv_subn_get_pkeytable(smp, ibdev); - goto bail; - case IB_SMP_ATTR_SM_INFO: - if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { - ret = IB_MAD_RESULT_SUCCESS | - IB_MAD_RESULT_CONSUMED; - goto bail; - } - if (dev->port_cap_flags & IB_PORT_SM) { - ret = IB_MAD_RESULT_SUCCESS; - goto bail; - } - /* FALLTHROUGH */ - default: - smp->status |= IB_SMP_UNSUP_METH_ATTR; - ret = reply(smp); - goto bail; - } - - case IB_MGMT_METHOD_SET: - switch (smp->attr_id) { - case IB_SMP_ATTR_GUID_INFO: - ret = recv_subn_set_guidinfo(smp, ibdev); - goto bail; - case IB_SMP_ATTR_PORT_INFO: - ret = recv_subn_set_portinfo(smp, ibdev, port_num); - goto bail; - case IB_SMP_ATTR_PKEY_TABLE: - ret = recv_subn_set_pkeytable(smp, ibdev, port_num); - goto bail; - case IB_SMP_ATTR_SM_INFO: - if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { - ret = IB_MAD_RESULT_SUCCESS | - IB_MAD_RESULT_CONSUMED; - goto bail; - } - if (dev->port_cap_flags & IB_PORT_SM) { - ret = IB_MAD_RESULT_SUCCESS; - goto bail; - } - /* FALLTHROUGH */ - default: - smp->status |= IB_SMP_UNSUP_METH_ATTR; - ret = reply(smp); - goto bail; - } - - case IB_MGMT_METHOD_TRAP: - case IB_MGMT_METHOD_REPORT: - case IB_MGMT_METHOD_REPORT_RESP: - case IB_MGMT_METHOD_TRAP_REPRESS: - case IB_MGMT_METHOD_GET_RESP: - /* - * The ib_mad module will call us to process responses - * before checking for other consumers. - * Just tell the caller to process it normally. - */ - ret = IB_MAD_RESULT_SUCCESS; - goto bail; - default: - smp->status |= IB_SMP_UNSUP_METHOD; - ret = reply(smp); - } - -bail: - return ret; -} - -static int process_perf(struct ib_device *ibdev, u8 port_num, - const struct ib_mad *in_mad, - struct ib_mad *out_mad) -{ - struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; - int ret; - - *out_mad = *in_mad; - if (pmp->mad_hdr.class_version != 1) { - pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; - ret = reply((struct ib_smp *) pmp); - goto bail; - } - - switch (pmp->mad_hdr.method) { - case IB_MGMT_METHOD_GET: - switch (pmp->mad_hdr.attr_id) { - case IB_PMA_CLASS_PORT_INFO: - ret = recv_pma_get_classportinfo(pmp); - goto bail; - case IB_PMA_PORT_SAMPLES_CONTROL: - ret = recv_pma_get_portsamplescontrol(pmp, ibdev, - port_num); - goto bail; - case IB_PMA_PORT_SAMPLES_RESULT: - ret = recv_pma_get_portsamplesresult(pmp, ibdev); - goto bail; - case IB_PMA_PORT_SAMPLES_RESULT_EXT: - ret = recv_pma_get_portsamplesresult_ext(pmp, - ibdev); - goto bail; - case IB_PMA_PORT_COUNTERS: - ret = recv_pma_get_portcounters(pmp, ibdev, - port_num); - goto bail; - case IB_PMA_PORT_COUNTERS_EXT: - ret = recv_pma_get_portcounters_ext(pmp, ibdev, - port_num); - goto bail; - default: - pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; - ret = reply((struct ib_smp *) pmp); - goto bail; - } - - case IB_MGMT_METHOD_SET: - switch (pmp->mad_hdr.attr_id) { - case IB_PMA_PORT_SAMPLES_CONTROL: - ret = recv_pma_set_portsamplescontrol(pmp, ibdev, - port_num); - goto bail; - case IB_PMA_PORT_COUNTERS: - ret = recv_pma_set_portcounters(pmp, ibdev, - port_num); - goto bail; - case IB_PMA_PORT_COUNTERS_EXT: - ret = recv_pma_set_portcounters_ext(pmp, ibdev, - port_num); - goto bail; - default: - pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; - ret = reply((struct ib_smp *) pmp); - goto bail; - } - - case IB_MGMT_METHOD_GET_RESP: - /* - * The ib_mad module will call us to process responses - * before checking for other consumers. - * Just tell the caller to process it normally. - */ - ret = IB_MAD_RESULT_SUCCESS; - goto bail; - default: - pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; - ret = reply((struct ib_smp *) pmp); - } - -bail: - return ret; -} - -/** - * ipath_process_mad - process an incoming MAD packet - * @ibdev: the infiniband device this packet came in on - * @mad_flags: MAD flags - * @port_num: the port number this packet came in on - * @in_wc: the work completion entry for this packet - * @in_grh: the global route header for this packet - * @in_mad: the incoming MAD - * @out_mad: any outgoing MAD reply - * - * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not - * interested in processing. - * - * Note that the verbs framework has already done the MAD sanity checks, - * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE - * MADs. - * - * This is called by the ib_mad module. - */ -int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, - const struct ib_wc *in_wc, const struct ib_grh *in_grh, - const struct ib_mad_hdr *in, size_t in_mad_size, - struct ib_mad_hdr *out, size_t *out_mad_size, - u16 *out_mad_pkey_index) -{ - int ret; - const struct ib_mad *in_mad = (const struct ib_mad *)in; - struct ib_mad *out_mad = (struct ib_mad *)out; - - if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || - *out_mad_size != sizeof(*out_mad))) - return IB_MAD_RESULT_FAILURE; - - switch (in_mad->mad_hdr.mgmt_class) { - case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: - case IB_MGMT_CLASS_SUBN_LID_ROUTED: - ret = process_subn(ibdev, mad_flags, port_num, - in_mad, out_mad); - goto bail; - case IB_MGMT_CLASS_PERF_MGMT: - ret = process_perf(ibdev, port_num, in_mad, out_mad); - goto bail; - default: - ret = IB_MAD_RESULT_SUCCESS; - } - -bail: - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_mmap.c b/drivers/staging/rdma/ipath/ipath_mmap.c deleted file mode 100644 index e73274229404..000000000000 --- a/drivers/staging/rdma/ipath/ipath_mmap.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include - -#include "ipath_verbs.h" - -/** - * ipath_release_mmap_info - free mmap info structure - * @ref: a pointer to the kref within struct ipath_mmap_info - */ -void ipath_release_mmap_info(struct kref *ref) -{ - struct ipath_mmap_info *ip = - container_of(ref, struct ipath_mmap_info, ref); - struct ipath_ibdev *dev = to_idev(ip->context->device); - - spin_lock_irq(&dev->pending_lock); - list_del(&ip->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - - vfree(ip->obj); - kfree(ip); -} - -/* - * open and close keep track of how many times the CQ is mapped, - * to avoid releasing it. - */ -static void ipath_vma_open(struct vm_area_struct *vma) -{ - struct ipath_mmap_info *ip = vma->vm_private_data; - - kref_get(&ip->ref); -} - -static void ipath_vma_close(struct vm_area_struct *vma) -{ - struct ipath_mmap_info *ip = vma->vm_private_data; - - kref_put(&ip->ref, ipath_release_mmap_info); -} - -static const struct vm_operations_struct ipath_vm_ops = { - .open = ipath_vma_open, - .close = ipath_vma_close, -}; - -/** - * ipath_mmap - create a new mmap region - * @context: the IB user context of the process making the mmap() call - * @vma: the VMA to be initialized - * Return zero if the mmap is OK. Otherwise, return an errno. - */ -int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) -{ - struct ipath_ibdev *dev = to_idev(context->device); - unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; - unsigned long size = vma->vm_end - vma->vm_start; - struct ipath_mmap_info *ip, *pp; - int ret = -EINVAL; - - /* - * Search the device's list of objects waiting for a mmap call. - * Normally, this list is very short since a call to create a - * CQ, QP, or SRQ is soon followed by a call to mmap(). - */ - spin_lock_irq(&dev->pending_lock); - list_for_each_entry_safe(ip, pp, &dev->pending_mmaps, - pending_mmaps) { - /* Only the creator is allowed to mmap the object */ - if (context != ip->context || (__u64) offset != ip->offset) - continue; - /* Don't allow a mmap larger than the object. */ - if (size > ip->size) - break; - - list_del_init(&ip->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - - ret = remap_vmalloc_range(vma, ip->obj, 0); - if (ret) - goto done; - vma->vm_ops = &ipath_vm_ops; - vma->vm_private_data = ip; - ipath_vma_open(vma); - goto done; - } - spin_unlock_irq(&dev->pending_lock); -done: - return ret; -} - -/* - * Allocate information for ipath_mmap - */ -struct ipath_mmap_info *ipath_create_mmap_info(struct ipath_ibdev *dev, - u32 size, - struct ib_ucontext *context, - void *obj) { - struct ipath_mmap_info *ip; - - ip = kmalloc(sizeof *ip, GFP_KERNEL); - if (!ip) - goto bail; - - size = PAGE_ALIGN(size); - - spin_lock_irq(&dev->mmap_offset_lock); - if (dev->mmap_offset == 0) - dev->mmap_offset = PAGE_SIZE; - ip->offset = dev->mmap_offset; - dev->mmap_offset += size; - spin_unlock_irq(&dev->mmap_offset_lock); - - INIT_LIST_HEAD(&ip->pending_mmaps); - ip->size = size; - ip->context = context; - ip->obj = obj; - kref_init(&ip->ref); - -bail: - return ip; -} - -void ipath_update_mmap_info(struct ipath_ibdev *dev, - struct ipath_mmap_info *ip, - u32 size, void *obj) { - size = PAGE_ALIGN(size); - - spin_lock_irq(&dev->mmap_offset_lock); - if (dev->mmap_offset == 0) - dev->mmap_offset = PAGE_SIZE; - ip->offset = dev->mmap_offset; - dev->mmap_offset += size; - spin_unlock_irq(&dev->mmap_offset_lock); - - ip->size = size; - ip->obj = obj; -} diff --git a/drivers/staging/rdma/ipath/ipath_mr.c b/drivers/staging/rdma/ipath/ipath_mr.c deleted file mode 100644 index b76b0ce66709..000000000000 --- a/drivers/staging/rdma/ipath/ipath_mr.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include - -#include -#include -#include - -#include "ipath_verbs.h" - -/* Fast memory region */ -struct ipath_fmr { - struct ib_fmr ibfmr; - u8 page_shift; - struct ipath_mregion mr; /* must be last */ -}; - -static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr) -{ - return container_of(ibfmr, struct ipath_fmr, ibfmr); -} - -/** - * ipath_get_dma_mr - get a DMA memory region - * @pd: protection domain for this memory region - * @acc: access flags - * - * Returns the memory region on success, otherwise returns an errno. - * Note that all DMA addresses should be created via the - * struct ib_dma_mapping_ops functions (see ipath_dma.c). - */ -struct ib_mr *ipath_get_dma_mr(struct ib_pd *pd, int acc) -{ - struct ipath_mr *mr; - struct ib_mr *ret; - - mr = kzalloc(sizeof *mr, GFP_KERNEL); - if (!mr) { - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - mr->mr.access_flags = acc; - ret = &mr->ibmr; - -bail: - return ret; -} - -static struct ipath_mr *alloc_mr(int count, - struct ipath_lkey_table *lk_table) -{ - struct ipath_mr *mr; - int m, i = 0; - - /* Allocate struct plus pointers to first level page tables. */ - m = (count + IPATH_SEGSZ - 1) / IPATH_SEGSZ; - mr = kmalloc(sizeof *mr + m * sizeof mr->mr.map[0], GFP_KERNEL); - if (!mr) - goto done; - - /* Allocate first level page tables. */ - for (; i < m; i++) { - mr->mr.map[i] = kmalloc(sizeof *mr->mr.map[0], GFP_KERNEL); - if (!mr->mr.map[i]) - goto bail; - } - mr->mr.mapsz = m; - - if (!ipath_alloc_lkey(lk_table, &mr->mr)) - goto bail; - mr->ibmr.rkey = mr->ibmr.lkey = mr->mr.lkey; - - goto done; - -bail: - while (i) { - i--; - kfree(mr->mr.map[i]); - } - kfree(mr); - mr = NULL; - -done: - return mr; -} - -/** - * ipath_reg_user_mr - register a userspace memory region - * @pd: protection domain for this memory region - * @start: starting userspace address - * @length: length of region to register - * @virt_addr: virtual address to use (from HCA's point of view) - * @mr_access_flags: access flags for this memory region - * @udata: unused by the InfiniPath driver - * - * Returns the memory region on success, otherwise returns an errno. - */ -struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, - u64 virt_addr, int mr_access_flags, - struct ib_udata *udata) -{ - struct ipath_mr *mr; - struct ib_umem *umem; - int n, m, entry; - struct scatterlist *sg; - struct ib_mr *ret; - - if (length == 0) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - umem = ib_umem_get(pd->uobject->context, start, length, - mr_access_flags, 0); - if (IS_ERR(umem)) - return (void *) umem; - - n = umem->nmap; - mr = alloc_mr(n, &to_idev(pd->device)->lk_table); - if (!mr) { - ret = ERR_PTR(-ENOMEM); - ib_umem_release(umem); - goto bail; - } - - mr->mr.pd = pd; - mr->mr.user_base = start; - mr->mr.iova = virt_addr; - mr->mr.length = length; - mr->mr.offset = ib_umem_offset(umem); - mr->mr.access_flags = mr_access_flags; - mr->mr.max_segs = n; - mr->umem = umem; - - m = 0; - n = 0; - for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) { - void *vaddr; - - vaddr = page_address(sg_page(sg)); - if (!vaddr) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - mr->mr.map[m]->segs[n].vaddr = vaddr; - mr->mr.map[m]->segs[n].length = umem->page_size; - n++; - if (n == IPATH_SEGSZ) { - m++; - n = 0; - } - } - ret = &mr->ibmr; - -bail: - return ret; -} - -/** - * ipath_dereg_mr - unregister and free a memory region - * @ibmr: the memory region to free - * - * Returns 0 on success. - * - * Note that this is called to free MRs created by ipath_get_dma_mr() - * or ipath_reg_user_mr(). - */ -int ipath_dereg_mr(struct ib_mr *ibmr) -{ - struct ipath_mr *mr = to_imr(ibmr); - int i; - - ipath_free_lkey(&to_idev(ibmr->device)->lk_table, ibmr->lkey); - i = mr->mr.mapsz; - while (i) { - i--; - kfree(mr->mr.map[i]); - } - - if (mr->umem) - ib_umem_release(mr->umem); - - kfree(mr); - return 0; -} - -/** - * ipath_alloc_fmr - allocate a fast memory region - * @pd: the protection domain for this memory region - * @mr_access_flags: access flags for this memory region - * @fmr_attr: fast memory region attributes - * - * Returns the memory region on success, otherwise returns an errno. - */ -struct ib_fmr *ipath_alloc_fmr(struct ib_pd *pd, int mr_access_flags, - struct ib_fmr_attr *fmr_attr) -{ - struct ipath_fmr *fmr; - int m, i = 0; - struct ib_fmr *ret; - - /* Allocate struct plus pointers to first level page tables. */ - m = (fmr_attr->max_pages + IPATH_SEGSZ - 1) / IPATH_SEGSZ; - fmr = kmalloc(sizeof *fmr + m * sizeof fmr->mr.map[0], GFP_KERNEL); - if (!fmr) - goto bail; - - /* Allocate first level page tables. */ - for (; i < m; i++) { - fmr->mr.map[i] = kmalloc(sizeof *fmr->mr.map[0], - GFP_KERNEL); - if (!fmr->mr.map[i]) - goto bail; - } - fmr->mr.mapsz = m; - - /* - * ib_alloc_fmr() will initialize fmr->ibfmr except for lkey & - * rkey. - */ - if (!ipath_alloc_lkey(&to_idev(pd->device)->lk_table, &fmr->mr)) - goto bail; - fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mr.lkey; - /* - * Resources are allocated but no valid mapping (RKEY can't be - * used). - */ - fmr->mr.pd = pd; - fmr->mr.user_base = 0; - fmr->mr.iova = 0; - fmr->mr.length = 0; - fmr->mr.offset = 0; - fmr->mr.access_flags = mr_access_flags; - fmr->mr.max_segs = fmr_attr->max_pages; - fmr->page_shift = fmr_attr->page_shift; - - ret = &fmr->ibfmr; - goto done; - -bail: - while (i) - kfree(fmr->mr.map[--i]); - kfree(fmr); - ret = ERR_PTR(-ENOMEM); - -done: - return ret; -} - -/** - * ipath_map_phys_fmr - set up a fast memory region - * @ibmfr: the fast memory region to set up - * @page_list: the list of pages to associate with the fast memory region - * @list_len: the number of pages to associate with the fast memory region - * @iova: the virtual address of the start of the fast memory region - * - * This may be called from interrupt context. - */ - -int ipath_map_phys_fmr(struct ib_fmr *ibfmr, u64 * page_list, - int list_len, u64 iova) -{ - struct ipath_fmr *fmr = to_ifmr(ibfmr); - struct ipath_lkey_table *rkt; - unsigned long flags; - int m, n, i; - u32 ps; - int ret; - - if (list_len > fmr->mr.max_segs) { - ret = -EINVAL; - goto bail; - } - rkt = &to_idev(ibfmr->device)->lk_table; - spin_lock_irqsave(&rkt->lock, flags); - fmr->mr.user_base = iova; - fmr->mr.iova = iova; - ps = 1 << fmr->page_shift; - fmr->mr.length = list_len * ps; - m = 0; - n = 0; - ps = 1 << fmr->page_shift; - for (i = 0; i < list_len; i++) { - fmr->mr.map[m]->segs[n].vaddr = (void *) page_list[i]; - fmr->mr.map[m]->segs[n].length = ps; - if (++n == IPATH_SEGSZ) { - m++; - n = 0; - } - } - spin_unlock_irqrestore(&rkt->lock, flags); - ret = 0; - -bail: - return ret; -} - -/** - * ipath_unmap_fmr - unmap fast memory regions - * @fmr_list: the list of fast memory regions to unmap - * - * Returns 0 on success. - */ -int ipath_unmap_fmr(struct list_head *fmr_list) -{ - struct ipath_fmr *fmr; - struct ipath_lkey_table *rkt; - unsigned long flags; - - list_for_each_entry(fmr, fmr_list, ibfmr.list) { - rkt = &to_idev(fmr->ibfmr.device)->lk_table; - spin_lock_irqsave(&rkt->lock, flags); - fmr->mr.user_base = 0; - fmr->mr.iova = 0; - fmr->mr.length = 0; - spin_unlock_irqrestore(&rkt->lock, flags); - } - return 0; -} - -/** - * ipath_dealloc_fmr - deallocate a fast memory region - * @ibfmr: the fast memory region to deallocate - * - * Returns 0 on success. - */ -int ipath_dealloc_fmr(struct ib_fmr *ibfmr) -{ - struct ipath_fmr *fmr = to_ifmr(ibfmr); - int i; - - ipath_free_lkey(&to_idev(ibfmr->device)->lk_table, ibfmr->lkey); - i = fmr->mr.mapsz; - while (i) - kfree(fmr->mr.map[--i]); - kfree(fmr); - return 0; -} diff --git a/drivers/staging/rdma/ipath/ipath_qp.c b/drivers/staging/rdma/ipath/ipath_qp.c deleted file mode 100644 index 280cd2d638e4..000000000000 --- a/drivers/staging/rdma/ipath/ipath_qp.c +++ /dev/null @@ -1,1079 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -#define BITS_PER_PAGE (PAGE_SIZE*BITS_PER_BYTE) -#define BITS_PER_PAGE_MASK (BITS_PER_PAGE-1) -#define mk_qpn(qpt, map, off) (((map) - (qpt)->map) * BITS_PER_PAGE + \ - (off)) -#define find_next_offset(map, off) find_next_zero_bit((map)->page, \ - BITS_PER_PAGE, off) - -/* - * Convert the AETH credit code into the number of credits. - */ -static u32 credit_table[31] = { - 0, /* 0 */ - 1, /* 1 */ - 2, /* 2 */ - 3, /* 3 */ - 4, /* 4 */ - 6, /* 5 */ - 8, /* 6 */ - 12, /* 7 */ - 16, /* 8 */ - 24, /* 9 */ - 32, /* A */ - 48, /* B */ - 64, /* C */ - 96, /* D */ - 128, /* E */ - 192, /* F */ - 256, /* 10 */ - 384, /* 11 */ - 512, /* 12 */ - 768, /* 13 */ - 1024, /* 14 */ - 1536, /* 15 */ - 2048, /* 16 */ - 3072, /* 17 */ - 4096, /* 18 */ - 6144, /* 19 */ - 8192, /* 1A */ - 12288, /* 1B */ - 16384, /* 1C */ - 24576, /* 1D */ - 32768 /* 1E */ -}; - - -static void get_map_page(struct ipath_qp_table *qpt, struct qpn_map *map) -{ - unsigned long page = get_zeroed_page(GFP_KERNEL); - unsigned long flags; - - /* - * Free the page if someone raced with us installing it. - */ - - spin_lock_irqsave(&qpt->lock, flags); - if (map->page) - free_page(page); - else - map->page = (void *)page; - spin_unlock_irqrestore(&qpt->lock, flags); -} - - -static int alloc_qpn(struct ipath_qp_table *qpt, enum ib_qp_type type) -{ - u32 i, offset, max_scan, qpn; - struct qpn_map *map; - u32 ret = -1; - - if (type == IB_QPT_SMI) - ret = 0; - else if (type == IB_QPT_GSI) - ret = 1; - - if (ret != -1) { - map = &qpt->map[0]; - if (unlikely(!map->page)) { - get_map_page(qpt, map); - if (unlikely(!map->page)) { - ret = -ENOMEM; - goto bail; - } - } - if (!test_and_set_bit(ret, map->page)) - atomic_dec(&map->n_free); - else - ret = -EBUSY; - goto bail; - } - - qpn = qpt->last + 1; - if (qpn >= QPN_MAX) - qpn = 2; - offset = qpn & BITS_PER_PAGE_MASK; - map = &qpt->map[qpn / BITS_PER_PAGE]; - max_scan = qpt->nmaps - !offset; - for (i = 0;;) { - if (unlikely(!map->page)) { - get_map_page(qpt, map); - if (unlikely(!map->page)) - break; - } - if (likely(atomic_read(&map->n_free))) { - do { - if (!test_and_set_bit(offset, map->page)) { - atomic_dec(&map->n_free); - qpt->last = qpn; - ret = qpn; - goto bail; - } - offset = find_next_offset(map, offset); - qpn = mk_qpn(qpt, map, offset); - /* - * This test differs from alloc_pidmap(). - * If find_next_offset() does find a zero - * bit, we don't need to check for QPN - * wrapping around past our starting QPN. - * We just need to be sure we don't loop - * forever. - */ - } while (offset < BITS_PER_PAGE && qpn < QPN_MAX); - } - /* - * In order to keep the number of pages allocated to a - * minimum, we scan the all existing pages before increasing - * the size of the bitmap table. - */ - if (++i > max_scan) { - if (qpt->nmaps == QPNMAP_ENTRIES) - break; - map = &qpt->map[qpt->nmaps++]; - offset = 0; - } else if (map < &qpt->map[qpt->nmaps]) { - ++map; - offset = 0; - } else { - map = &qpt->map[0]; - offset = 2; - } - qpn = mk_qpn(qpt, map, offset); - } - - ret = -ENOMEM; - -bail: - return ret; -} - -static void free_qpn(struct ipath_qp_table *qpt, u32 qpn) -{ - struct qpn_map *map; - - map = qpt->map + qpn / BITS_PER_PAGE; - if (map->page) - clear_bit(qpn & BITS_PER_PAGE_MASK, map->page); - atomic_inc(&map->n_free); -} - -/** - * ipath_alloc_qpn - allocate a QP number - * @qpt: the QP table - * @qp: the QP - * @type: the QP type (IB_QPT_SMI and IB_QPT_GSI are special) - * - * Allocate the next available QPN and put the QP into the hash table. - * The hash table holds a reference to the QP. - */ -static int ipath_alloc_qpn(struct ipath_qp_table *qpt, struct ipath_qp *qp, - enum ib_qp_type type) -{ - unsigned long flags; - int ret; - - ret = alloc_qpn(qpt, type); - if (ret < 0) - goto bail; - qp->ibqp.qp_num = ret; - - /* Add the QP to the hash table. */ - spin_lock_irqsave(&qpt->lock, flags); - - ret %= qpt->max; - qp->next = qpt->table[ret]; - qpt->table[ret] = qp; - atomic_inc(&qp->refcount); - - spin_unlock_irqrestore(&qpt->lock, flags); - ret = 0; - -bail: - return ret; -} - -/** - * ipath_free_qp - remove a QP from the QP table - * @qpt: the QP table - * @qp: the QP to remove - * - * Remove the QP from the table so it can't be found asynchronously by - * the receive interrupt routine. - */ -static void ipath_free_qp(struct ipath_qp_table *qpt, struct ipath_qp *qp) -{ - struct ipath_qp *q, **qpp; - unsigned long flags; - - spin_lock_irqsave(&qpt->lock, flags); - - /* Remove QP from the hash table. */ - qpp = &qpt->table[qp->ibqp.qp_num % qpt->max]; - for (; (q = *qpp) != NULL; qpp = &q->next) { - if (q == qp) { - *qpp = qp->next; - qp->next = NULL; - atomic_dec(&qp->refcount); - break; - } - } - - spin_unlock_irqrestore(&qpt->lock, flags); -} - -/** - * ipath_free_all_qps - check for QPs still in use - * @qpt: the QP table to empty - * - * There should not be any QPs still in use. - * Free memory for table. - */ -unsigned ipath_free_all_qps(struct ipath_qp_table *qpt) -{ - unsigned long flags; - struct ipath_qp *qp; - u32 n, qp_inuse = 0; - - spin_lock_irqsave(&qpt->lock, flags); - for (n = 0; n < qpt->max; n++) { - qp = qpt->table[n]; - qpt->table[n] = NULL; - - for (; qp; qp = qp->next) - qp_inuse++; - } - spin_unlock_irqrestore(&qpt->lock, flags); - - for (n = 0; n < ARRAY_SIZE(qpt->map); n++) - if (qpt->map[n].page) - free_page((unsigned long) qpt->map[n].page); - return qp_inuse; -} - -/** - * ipath_lookup_qpn - return the QP with the given QPN - * @qpt: the QP table - * @qpn: the QP number to look up - * - * The caller is responsible for decrementing the QP reference count - * when done. - */ -struct ipath_qp *ipath_lookup_qpn(struct ipath_qp_table *qpt, u32 qpn) -{ - unsigned long flags; - struct ipath_qp *qp; - - spin_lock_irqsave(&qpt->lock, flags); - - for (qp = qpt->table[qpn % qpt->max]; qp; qp = qp->next) { - if (qp->ibqp.qp_num == qpn) { - atomic_inc(&qp->refcount); - break; - } - } - - spin_unlock_irqrestore(&qpt->lock, flags); - return qp; -} - -/** - * ipath_reset_qp - initialize the QP state to the reset state - * @qp: the QP to reset - * @type: the QP type - */ -static void ipath_reset_qp(struct ipath_qp *qp, enum ib_qp_type type) -{ - qp->remote_qpn = 0; - qp->qkey = 0; - qp->qp_access_flags = 0; - atomic_set(&qp->s_dma_busy, 0); - qp->s_flags &= IPATH_S_SIGNAL_REQ_WR; - qp->s_hdrwords = 0; - qp->s_wqe = NULL; - qp->s_pkt_delay = 0; - qp->s_draining = 0; - qp->s_psn = 0; - qp->r_psn = 0; - qp->r_msn = 0; - if (type == IB_QPT_RC) { - qp->s_state = IB_OPCODE_RC_SEND_LAST; - qp->r_state = IB_OPCODE_RC_SEND_LAST; - } else { - qp->s_state = IB_OPCODE_UC_SEND_LAST; - qp->r_state = IB_OPCODE_UC_SEND_LAST; - } - qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; - qp->r_nak_state = 0; - qp->r_aflags = 0; - qp->r_flags = 0; - qp->s_rnr_timeout = 0; - qp->s_head = 0; - qp->s_tail = 0; - qp->s_cur = 0; - qp->s_last = 0; - qp->s_ssn = 1; - qp->s_lsn = 0; - memset(qp->s_ack_queue, 0, sizeof(qp->s_ack_queue)); - qp->r_head_ack_queue = 0; - qp->s_tail_ack_queue = 0; - qp->s_num_rd_atomic = 0; - if (qp->r_rq.wq) { - qp->r_rq.wq->head = 0; - qp->r_rq.wq->tail = 0; - } -} - -/** - * ipath_error_qp - put a QP into the error state - * @qp: the QP to put into the error state - * @err: the receive completion error to signal if a RWQE is active - * - * Flushes both send and receive work queues. - * Returns true if last WQE event should be generated. - * The QP s_lock should be held and interrupts disabled. - * If we are already in error state, just return. - */ - -int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ib_wc wc; - int ret = 0; - - if (qp->state == IB_QPS_ERR) - goto bail; - - qp->state = IB_QPS_ERR; - - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - spin_unlock(&dev->pending_lock); - - /* Schedule the sending tasklet to drain the send work queue. */ - if (qp->s_last != qp->s_head) - ipath_schedule_send(qp); - - memset(&wc, 0, sizeof(wc)); - wc.qp = &qp->ibqp; - wc.opcode = IB_WC_RECV; - - if (test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) { - wc.wr_id = qp->r_wr_id; - wc.status = err; - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); - } - wc.status = IB_WC_WR_FLUSH_ERR; - - if (qp->r_rq.wq) { - struct ipath_rwq *wq; - u32 head; - u32 tail; - - spin_lock(&qp->r_rq.lock); - - /* sanity check pointers before trusting them */ - wq = qp->r_rq.wq; - head = wq->head; - if (head >= qp->r_rq.size) - head = 0; - tail = wq->tail; - if (tail >= qp->r_rq.size) - tail = 0; - while (tail != head) { - wc.wr_id = get_rwqe_ptr(&qp->r_rq, tail)->wr_id; - if (++tail >= qp->r_rq.size) - tail = 0; - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); - } - wq->tail = tail; - - spin_unlock(&qp->r_rq.lock); - } else if (qp->ibqp.event_handler) - ret = 1; - -bail: - return ret; -} - -/** - * ipath_modify_qp - modify the attributes of a queue pair - * @ibqp: the queue pair who's attributes we're modifying - * @attr: the new attributes - * @attr_mask: the mask of attributes to modify - * @udata: user data for ipathverbs.so - * - * Returns 0 on success, otherwise returns an errno. - */ -int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask, struct ib_udata *udata) -{ - struct ipath_ibdev *dev = to_idev(ibqp->device); - struct ipath_qp *qp = to_iqp(ibqp); - enum ib_qp_state cur_state, new_state; - int lastwqe = 0; - int ret; - - spin_lock_irq(&qp->s_lock); - - cur_state = attr_mask & IB_QP_CUR_STATE ? - attr->cur_qp_state : qp->state; - new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; - - if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, - attr_mask, IB_LINK_LAYER_UNSPECIFIED)) - goto inval; - - if (attr_mask & IB_QP_AV) { - if (attr->ah_attr.dlid == 0 || - attr->ah_attr.dlid >= IPATH_MULTICAST_LID_BASE) - goto inval; - - if ((attr->ah_attr.ah_flags & IB_AH_GRH) && - (attr->ah_attr.grh.sgid_index > 1)) - goto inval; - } - - if (attr_mask & IB_QP_PKEY_INDEX) - if (attr->pkey_index >= ipath_get_npkeys(dev->dd)) - goto inval; - - if (attr_mask & IB_QP_MIN_RNR_TIMER) - if (attr->min_rnr_timer > 31) - goto inval; - - if (attr_mask & IB_QP_PORT) - if (attr->port_num == 0 || - attr->port_num > ibqp->device->phys_port_cnt) - goto inval; - - /* - * don't allow invalid Path MTU values or greater than 2048 - * unless we are configured for a 4KB MTU - */ - if ((attr_mask & IB_QP_PATH_MTU) && - (ib_mtu_enum_to_int(attr->path_mtu) == -1 || - (attr->path_mtu > IB_MTU_2048 && !ipath_mtu4096))) - goto inval; - - if (attr_mask & IB_QP_PATH_MIG_STATE) - if (attr->path_mig_state != IB_MIG_MIGRATED && - attr->path_mig_state != IB_MIG_REARM) - goto inval; - - if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) - if (attr->max_dest_rd_atomic > IPATH_MAX_RDMA_ATOMIC) - goto inval; - - switch (new_state) { - case IB_QPS_RESET: - if (qp->state != IB_QPS_RESET) { - qp->state = IB_QPS_RESET; - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - spin_unlock(&dev->pending_lock); - qp->s_flags &= ~IPATH_S_ANY_WAIT; - spin_unlock_irq(&qp->s_lock); - /* Stop the sending tasklet */ - tasklet_kill(&qp->s_task); - wait_event(qp->wait_dma, !atomic_read(&qp->s_dma_busy)); - spin_lock_irq(&qp->s_lock); - } - ipath_reset_qp(qp, ibqp->qp_type); - break; - - case IB_QPS_SQD: - qp->s_draining = qp->s_last != qp->s_cur; - qp->state = new_state; - break; - - case IB_QPS_SQE: - if (qp->ibqp.qp_type == IB_QPT_RC) - goto inval; - qp->state = new_state; - break; - - case IB_QPS_ERR: - lastwqe = ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); - break; - - default: - qp->state = new_state; - break; - } - - if (attr_mask & IB_QP_PKEY_INDEX) - qp->s_pkey_index = attr->pkey_index; - - if (attr_mask & IB_QP_DEST_QPN) - qp->remote_qpn = attr->dest_qp_num; - - if (attr_mask & IB_QP_SQ_PSN) { - qp->s_psn = qp->s_next_psn = attr->sq_psn; - qp->s_last_psn = qp->s_next_psn - 1; - } - - if (attr_mask & IB_QP_RQ_PSN) - qp->r_psn = attr->rq_psn; - - if (attr_mask & IB_QP_ACCESS_FLAGS) - qp->qp_access_flags = attr->qp_access_flags; - - if (attr_mask & IB_QP_AV) { - qp->remote_ah_attr = attr->ah_attr; - qp->s_dmult = ipath_ib_rate_to_mult(attr->ah_attr.static_rate); - } - - if (attr_mask & IB_QP_PATH_MTU) - qp->path_mtu = attr->path_mtu; - - if (attr_mask & IB_QP_RETRY_CNT) - qp->s_retry = qp->s_retry_cnt = attr->retry_cnt; - - if (attr_mask & IB_QP_RNR_RETRY) { - qp->s_rnr_retry = attr->rnr_retry; - if (qp->s_rnr_retry > 7) - qp->s_rnr_retry = 7; - qp->s_rnr_retry_cnt = qp->s_rnr_retry; - } - - if (attr_mask & IB_QP_MIN_RNR_TIMER) - qp->r_min_rnr_timer = attr->min_rnr_timer; - - if (attr_mask & IB_QP_TIMEOUT) - qp->timeout = attr->timeout; - - if (attr_mask & IB_QP_QKEY) - qp->qkey = attr->qkey; - - if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) - qp->r_max_rd_atomic = attr->max_dest_rd_atomic; - - if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) - qp->s_max_rd_atomic = attr->max_rd_atomic; - - spin_unlock_irq(&qp->s_lock); - - if (lastwqe) { - struct ib_event ev; - - ev.device = qp->ibqp.device; - ev.element.qp = &qp->ibqp; - ev.event = IB_EVENT_QP_LAST_WQE_REACHED; - qp->ibqp.event_handler(&ev, qp->ibqp.qp_context); - } - ret = 0; - goto bail; - -inval: - spin_unlock_irq(&qp->s_lock); - ret = -EINVAL; - -bail: - return ret; -} - -int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask, struct ib_qp_init_attr *init_attr) -{ - struct ipath_qp *qp = to_iqp(ibqp); - - attr->qp_state = qp->state; - attr->cur_qp_state = attr->qp_state; - attr->path_mtu = qp->path_mtu; - attr->path_mig_state = 0; - attr->qkey = qp->qkey; - attr->rq_psn = qp->r_psn; - attr->sq_psn = qp->s_next_psn; - attr->dest_qp_num = qp->remote_qpn; - attr->qp_access_flags = qp->qp_access_flags; - attr->cap.max_send_wr = qp->s_size - 1; - attr->cap.max_recv_wr = qp->ibqp.srq ? 0 : qp->r_rq.size - 1; - attr->cap.max_send_sge = qp->s_max_sge; - attr->cap.max_recv_sge = qp->r_rq.max_sge; - attr->cap.max_inline_data = 0; - attr->ah_attr = qp->remote_ah_attr; - memset(&attr->alt_ah_attr, 0, sizeof(attr->alt_ah_attr)); - attr->pkey_index = qp->s_pkey_index; - attr->alt_pkey_index = 0; - attr->en_sqd_async_notify = 0; - attr->sq_draining = qp->s_draining; - attr->max_rd_atomic = qp->s_max_rd_atomic; - attr->max_dest_rd_atomic = qp->r_max_rd_atomic; - attr->min_rnr_timer = qp->r_min_rnr_timer; - attr->port_num = 1; - attr->timeout = qp->timeout; - attr->retry_cnt = qp->s_retry_cnt; - attr->rnr_retry = qp->s_rnr_retry_cnt; - attr->alt_port_num = 0; - attr->alt_timeout = 0; - - init_attr->event_handler = qp->ibqp.event_handler; - init_attr->qp_context = qp->ibqp.qp_context; - init_attr->send_cq = qp->ibqp.send_cq; - init_attr->recv_cq = qp->ibqp.recv_cq; - init_attr->srq = qp->ibqp.srq; - init_attr->cap = attr->cap; - if (qp->s_flags & IPATH_S_SIGNAL_REQ_WR) - init_attr->sq_sig_type = IB_SIGNAL_REQ_WR; - else - init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; - init_attr->qp_type = qp->ibqp.qp_type; - init_attr->port_num = 1; - return 0; -} - -/** - * ipath_compute_aeth - compute the AETH (syndrome + MSN) - * @qp: the queue pair to compute the AETH for - * - * Returns the AETH. - */ -__be32 ipath_compute_aeth(struct ipath_qp *qp) -{ - u32 aeth = qp->r_msn & IPATH_MSN_MASK; - - if (qp->ibqp.srq) { - /* - * Shared receive queues don't generate credits. - * Set the credit field to the invalid value. - */ - aeth |= IPATH_AETH_CREDIT_INVAL << IPATH_AETH_CREDIT_SHIFT; - } else { - u32 min, max, x; - u32 credits; - struct ipath_rwq *wq = qp->r_rq.wq; - u32 head; - u32 tail; - - /* sanity check pointers before trusting them */ - head = wq->head; - if (head >= qp->r_rq.size) - head = 0; - tail = wq->tail; - if (tail >= qp->r_rq.size) - tail = 0; - /* - * Compute the number of credits available (RWQEs). - * XXX Not holding the r_rq.lock here so there is a small - * chance that the pair of reads are not atomic. - */ - credits = head - tail; - if ((int)credits < 0) - credits += qp->r_rq.size; - /* - * Binary search the credit table to find the code to - * use. - */ - min = 0; - max = 31; - for (;;) { - x = (min + max) / 2; - if (credit_table[x] == credits) - break; - if (credit_table[x] > credits) - max = x; - else if (min == x) - break; - else - min = x; - } - aeth |= x << IPATH_AETH_CREDIT_SHIFT; - } - return cpu_to_be32(aeth); -} - -/** - * ipath_create_qp - create a queue pair for a device - * @ibpd: the protection domain who's device we create the queue pair for - * @init_attr: the attributes of the queue pair - * @udata: unused by InfiniPath - * - * Returns the queue pair on success, otherwise returns an errno. - * - * Called by the ib_create_qp() core verbs function. - */ -struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, - struct ib_qp_init_attr *init_attr, - struct ib_udata *udata) -{ - struct ipath_qp *qp; - int err; - struct ipath_swqe *swq = NULL; - struct ipath_ibdev *dev; - size_t sz; - size_t sg_list_sz; - struct ib_qp *ret; - - if (init_attr->create_flags) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - if (init_attr->cap.max_send_sge > ib_ipath_max_sges || - init_attr->cap.max_send_wr > ib_ipath_max_qp_wrs) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - /* Check receive queue parameters if no SRQ is specified. */ - if (!init_attr->srq) { - if (init_attr->cap.max_recv_sge > ib_ipath_max_sges || - init_attr->cap.max_recv_wr > ib_ipath_max_qp_wrs) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - if (init_attr->cap.max_send_sge + - init_attr->cap.max_send_wr + - init_attr->cap.max_recv_sge + - init_attr->cap.max_recv_wr == 0) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - } - - switch (init_attr->qp_type) { - case IB_QPT_UC: - case IB_QPT_RC: - case IB_QPT_UD: - case IB_QPT_SMI: - case IB_QPT_GSI: - sz = sizeof(struct ipath_sge) * - init_attr->cap.max_send_sge + - sizeof(struct ipath_swqe); - swq = vmalloc((init_attr->cap.max_send_wr + 1) * sz); - if (swq == NULL) { - ret = ERR_PTR(-ENOMEM); - goto bail; - } - sz = sizeof(*qp); - sg_list_sz = 0; - if (init_attr->srq) { - struct ipath_srq *srq = to_isrq(init_attr->srq); - - if (srq->rq.max_sge > 1) - sg_list_sz = sizeof(*qp->r_sg_list) * - (srq->rq.max_sge - 1); - } else if (init_attr->cap.max_recv_sge > 1) - sg_list_sz = sizeof(*qp->r_sg_list) * - (init_attr->cap.max_recv_sge - 1); - qp = kmalloc(sz + sg_list_sz, GFP_KERNEL); - if (!qp) { - ret = ERR_PTR(-ENOMEM); - goto bail_swq; - } - if (sg_list_sz && (init_attr->qp_type == IB_QPT_UD || - init_attr->qp_type == IB_QPT_SMI || - init_attr->qp_type == IB_QPT_GSI)) { - qp->r_ud_sg_list = kmalloc(sg_list_sz, GFP_KERNEL); - if (!qp->r_ud_sg_list) { - ret = ERR_PTR(-ENOMEM); - goto bail_qp; - } - } else - qp->r_ud_sg_list = NULL; - if (init_attr->srq) { - sz = 0; - qp->r_rq.size = 0; - qp->r_rq.max_sge = 0; - qp->r_rq.wq = NULL; - init_attr->cap.max_recv_wr = 0; - init_attr->cap.max_recv_sge = 0; - } else { - qp->r_rq.size = init_attr->cap.max_recv_wr + 1; - qp->r_rq.max_sge = init_attr->cap.max_recv_sge; - sz = (sizeof(struct ib_sge) * qp->r_rq.max_sge) + - sizeof(struct ipath_rwqe); - qp->r_rq.wq = vmalloc_user(sizeof(struct ipath_rwq) + - qp->r_rq.size * sz); - if (!qp->r_rq.wq) { - ret = ERR_PTR(-ENOMEM); - goto bail_sg_list; - } - } - - /* - * ib_create_qp() will initialize qp->ibqp - * except for qp->ibqp.qp_num. - */ - spin_lock_init(&qp->s_lock); - spin_lock_init(&qp->r_rq.lock); - atomic_set(&qp->refcount, 0); - init_waitqueue_head(&qp->wait); - init_waitqueue_head(&qp->wait_dma); - tasklet_init(&qp->s_task, ipath_do_send, (unsigned long)qp); - INIT_LIST_HEAD(&qp->piowait); - INIT_LIST_HEAD(&qp->timerwait); - qp->state = IB_QPS_RESET; - qp->s_wq = swq; - qp->s_size = init_attr->cap.max_send_wr + 1; - qp->s_max_sge = init_attr->cap.max_send_sge; - if (init_attr->sq_sig_type == IB_SIGNAL_REQ_WR) - qp->s_flags = IPATH_S_SIGNAL_REQ_WR; - else - qp->s_flags = 0; - dev = to_idev(ibpd->device); - err = ipath_alloc_qpn(&dev->qp_table, qp, - init_attr->qp_type); - if (err) { - ret = ERR_PTR(err); - vfree(qp->r_rq.wq); - goto bail_sg_list; - } - qp->ip = NULL; - qp->s_tx = NULL; - ipath_reset_qp(qp, init_attr->qp_type); - break; - - default: - /* Don't support raw QPs */ - ret = ERR_PTR(-ENOSYS); - goto bail; - } - - init_attr->cap.max_inline_data = 0; - - /* - * Return the address of the RWQ as the offset to mmap. - * See ipath_mmap() for details. - */ - if (udata && udata->outlen >= sizeof(__u64)) { - if (!qp->r_rq.wq) { - __u64 offset = 0; - - err = ib_copy_to_udata(udata, &offset, - sizeof(offset)); - if (err) { - ret = ERR_PTR(err); - goto bail_ip; - } - } else { - u32 s = sizeof(struct ipath_rwq) + - qp->r_rq.size * sz; - - qp->ip = - ipath_create_mmap_info(dev, s, - ibpd->uobject->context, - qp->r_rq.wq); - if (!qp->ip) { - ret = ERR_PTR(-ENOMEM); - goto bail_ip; - } - - err = ib_copy_to_udata(udata, &(qp->ip->offset), - sizeof(qp->ip->offset)); - if (err) { - ret = ERR_PTR(err); - goto bail_ip; - } - } - } - - spin_lock(&dev->n_qps_lock); - if (dev->n_qps_allocated == ib_ipath_max_qps) { - spin_unlock(&dev->n_qps_lock); - ret = ERR_PTR(-ENOMEM); - goto bail_ip; - } - - dev->n_qps_allocated++; - spin_unlock(&dev->n_qps_lock); - - if (qp->ip) { - spin_lock_irq(&dev->pending_lock); - list_add(&qp->ip->pending_mmaps, &dev->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - } - - ret = &qp->ibqp; - goto bail; - -bail_ip: - if (qp->ip) - kref_put(&qp->ip->ref, ipath_release_mmap_info); - else - vfree(qp->r_rq.wq); - ipath_free_qp(&dev->qp_table, qp); - free_qpn(&dev->qp_table, qp->ibqp.qp_num); -bail_sg_list: - kfree(qp->r_ud_sg_list); -bail_qp: - kfree(qp); -bail_swq: - vfree(swq); -bail: - return ret; -} - -/** - * ipath_destroy_qp - destroy a queue pair - * @ibqp: the queue pair to destroy - * - * Returns 0 on success. - * - * Note that this can be called while the QP is actively sending or - * receiving! - */ -int ipath_destroy_qp(struct ib_qp *ibqp) -{ - struct ipath_qp *qp = to_iqp(ibqp); - struct ipath_ibdev *dev = to_idev(ibqp->device); - - /* Make sure HW and driver activity is stopped. */ - spin_lock_irq(&qp->s_lock); - if (qp->state != IB_QPS_RESET) { - qp->state = IB_QPS_RESET; - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - spin_unlock(&dev->pending_lock); - qp->s_flags &= ~IPATH_S_ANY_WAIT; - spin_unlock_irq(&qp->s_lock); - /* Stop the sending tasklet */ - tasklet_kill(&qp->s_task); - wait_event(qp->wait_dma, !atomic_read(&qp->s_dma_busy)); - } else - spin_unlock_irq(&qp->s_lock); - - ipath_free_qp(&dev->qp_table, qp); - - if (qp->s_tx) { - atomic_dec(&qp->refcount); - if (qp->s_tx->txreq.flags & IPATH_SDMA_TXREQ_F_FREEBUF) - kfree(qp->s_tx->txreq.map_addr); - spin_lock_irq(&dev->pending_lock); - list_add(&qp->s_tx->txreq.list, &dev->txreq_free); - spin_unlock_irq(&dev->pending_lock); - qp->s_tx = NULL; - } - - wait_event(qp->wait, !atomic_read(&qp->refcount)); - - /* all user's cleaned up, mark it available */ - free_qpn(&dev->qp_table, qp->ibqp.qp_num); - spin_lock(&dev->n_qps_lock); - dev->n_qps_allocated--; - spin_unlock(&dev->n_qps_lock); - - if (qp->ip) - kref_put(&qp->ip->ref, ipath_release_mmap_info); - else - vfree(qp->r_rq.wq); - kfree(qp->r_ud_sg_list); - vfree(qp->s_wq); - kfree(qp); - return 0; -} - -/** - * ipath_init_qp_table - initialize the QP table for a device - * @idev: the device who's QP table we're initializing - * @size: the size of the QP table - * - * Returns 0 on success, otherwise returns an errno. - */ -int ipath_init_qp_table(struct ipath_ibdev *idev, int size) -{ - int i; - int ret; - - idev->qp_table.last = 1; /* QPN 0 and 1 are special. */ - idev->qp_table.max = size; - idev->qp_table.nmaps = 1; - idev->qp_table.table = kcalloc(size, sizeof(*idev->qp_table.table), - GFP_KERNEL); - if (idev->qp_table.table == NULL) { - ret = -ENOMEM; - goto bail; - } - - for (i = 0; i < ARRAY_SIZE(idev->qp_table.map); i++) { - atomic_set(&idev->qp_table.map[i].n_free, BITS_PER_PAGE); - idev->qp_table.map[i].page = NULL; - } - - ret = 0; - -bail: - return ret; -} - -/** - * ipath_get_credit - flush the send work queue of a QP - * @qp: the qp who's send work queue to flush - * @aeth: the Acknowledge Extended Transport Header - * - * The QP s_lock should be held. - */ -void ipath_get_credit(struct ipath_qp *qp, u32 aeth) -{ - u32 credit = (aeth >> IPATH_AETH_CREDIT_SHIFT) & IPATH_AETH_CREDIT_MASK; - - /* - * If the credit is invalid, we can send - * as many packets as we like. Otherwise, we have to - * honor the credit field. - */ - if (credit == IPATH_AETH_CREDIT_INVAL) - qp->s_lsn = (u32) -1; - else if (qp->s_lsn != (u32) -1) { - /* Compute new LSN (i.e., MSN + credit) */ - credit = (aeth + credit_table[credit]) & IPATH_MSN_MASK; - if (ipath_cmp24(credit, qp->s_lsn) > 0) - qp->s_lsn = credit; - } - - /* Restart sending if it was blocked due to lack of credits. */ - if ((qp->s_flags & IPATH_S_WAIT_SSN_CREDIT) && - qp->s_cur != qp->s_head && - (qp->s_lsn == (u32) -1 || - ipath_cmp24(get_swqe_ptr(qp, qp->s_cur)->ssn, - qp->s_lsn + 1) <= 0)) - ipath_schedule_send(qp); -} diff --git a/drivers/staging/rdma/ipath/ipath_rc.c b/drivers/staging/rdma/ipath/ipath_rc.c deleted file mode 100644 index d4aa53574e57..000000000000 --- a/drivers/staging/rdma/ipath/ipath_rc.c +++ /dev/null @@ -1,1969 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -/* cut down ridiculously long IB macro names */ -#define OP(x) IB_OPCODE_RC_##x - -static u32 restart_sge(struct ipath_sge_state *ss, struct ipath_swqe *wqe, - u32 psn, u32 pmtu) -{ - u32 len; - - len = ((psn - wqe->psn) & IPATH_PSN_MASK) * pmtu; - ss->sge = wqe->sg_list[0]; - ss->sg_list = wqe->sg_list + 1; - ss->num_sge = wqe->wr.num_sge; - ipath_skip_sge(ss, len); - return wqe->length - len; -} - -/** - * ipath_init_restart- initialize the qp->s_sge after a restart - * @qp: the QP who's SGE we're restarting - * @wqe: the work queue to initialize the QP's SGE from - * - * The QP s_lock should be held and interrupts disabled. - */ -static void ipath_init_restart(struct ipath_qp *qp, struct ipath_swqe *wqe) -{ - struct ipath_ibdev *dev; - - qp->s_len = restart_sge(&qp->s_sge, wqe, qp->s_psn, - ib_mtu_enum_to_int(qp->path_mtu)); - dev = to_idev(qp->ibqp.device); - spin_lock(&dev->pending_lock); - if (list_empty(&qp->timerwait)) - list_add_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); - spin_unlock(&dev->pending_lock); -} - -/** - * ipath_make_rc_ack - construct a response packet (ACK, NAK, or RDMA read) - * @qp: a pointer to the QP - * @ohdr: a pointer to the IB header being constructed - * @pmtu: the path MTU - * - * Return 1 if constructed; otherwise, return 0. - * Note that we are in the responder's side of the QP context. - * Note the QP s_lock must be held. - */ -static int ipath_make_rc_ack(struct ipath_ibdev *dev, struct ipath_qp *qp, - struct ipath_other_headers *ohdr, u32 pmtu) -{ - struct ipath_ack_entry *e; - u32 hwords; - u32 len; - u32 bth0; - u32 bth2; - - /* Don't send an ACK if we aren't supposed to. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) - goto bail; - - /* header size in 32-bit words LRH+BTH = (8+12)/4. */ - hwords = 5; - - switch (qp->s_ack_state) { - case OP(RDMA_READ_RESPONSE_LAST): - case OP(RDMA_READ_RESPONSE_ONLY): - case OP(ATOMIC_ACKNOWLEDGE): - /* - * We can increment the tail pointer now that the last - * response has been sent instead of only being - * constructed. - */ - if (++qp->s_tail_ack_queue > IPATH_MAX_RDMA_ATOMIC) - qp->s_tail_ack_queue = 0; - /* FALLTHROUGH */ - case OP(SEND_ONLY): - case OP(ACKNOWLEDGE): - /* Check for no next entry in the queue. */ - if (qp->r_head_ack_queue == qp->s_tail_ack_queue) { - if (qp->s_flags & IPATH_S_ACK_PENDING) - goto normal; - qp->s_ack_state = OP(ACKNOWLEDGE); - goto bail; - } - - e = &qp->s_ack_queue[qp->s_tail_ack_queue]; - if (e->opcode == OP(RDMA_READ_REQUEST)) { - /* Copy SGE state in case we need to resend */ - qp->s_ack_rdma_sge = e->rdma_sge; - qp->s_cur_sge = &qp->s_ack_rdma_sge; - len = e->rdma_sge.sge.sge_length; - if (len > pmtu) { - len = pmtu; - qp->s_ack_state = OP(RDMA_READ_RESPONSE_FIRST); - } else { - qp->s_ack_state = OP(RDMA_READ_RESPONSE_ONLY); - e->sent = 1; - } - ohdr->u.aeth = ipath_compute_aeth(qp); - hwords++; - qp->s_ack_rdma_psn = e->psn; - bth2 = qp->s_ack_rdma_psn++ & IPATH_PSN_MASK; - } else { - /* COMPARE_SWAP or FETCH_ADD */ - qp->s_cur_sge = NULL; - len = 0; - qp->s_ack_state = OP(ATOMIC_ACKNOWLEDGE); - ohdr->u.at.aeth = ipath_compute_aeth(qp); - ohdr->u.at.atomic_ack_eth[0] = - cpu_to_be32(e->atomic_data >> 32); - ohdr->u.at.atomic_ack_eth[1] = - cpu_to_be32(e->atomic_data); - hwords += sizeof(ohdr->u.at) / sizeof(u32); - bth2 = e->psn; - e->sent = 1; - } - bth0 = qp->s_ack_state << 24; - break; - - case OP(RDMA_READ_RESPONSE_FIRST): - qp->s_ack_state = OP(RDMA_READ_RESPONSE_MIDDLE); - /* FALLTHROUGH */ - case OP(RDMA_READ_RESPONSE_MIDDLE): - len = qp->s_ack_rdma_sge.sge.sge_length; - if (len > pmtu) - len = pmtu; - else { - ohdr->u.aeth = ipath_compute_aeth(qp); - hwords++; - qp->s_ack_state = OP(RDMA_READ_RESPONSE_LAST); - qp->s_ack_queue[qp->s_tail_ack_queue].sent = 1; - } - bth0 = qp->s_ack_state << 24; - bth2 = qp->s_ack_rdma_psn++ & IPATH_PSN_MASK; - break; - - default: - normal: - /* - * Send a regular ACK. - * Set the s_ack_state so we wait until after sending - * the ACK before setting s_ack_state to ACKNOWLEDGE - * (see above). - */ - qp->s_ack_state = OP(SEND_ONLY); - qp->s_flags &= ~IPATH_S_ACK_PENDING; - qp->s_cur_sge = NULL; - if (qp->s_nak_state) - ohdr->u.aeth = - cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) | - (qp->s_nak_state << - IPATH_AETH_CREDIT_SHIFT)); - else - ohdr->u.aeth = ipath_compute_aeth(qp); - hwords++; - len = 0; - bth0 = OP(ACKNOWLEDGE) << 24; - bth2 = qp->s_ack_psn & IPATH_PSN_MASK; - } - qp->s_hdrwords = hwords; - qp->s_cur_size = len; - ipath_make_ruc_header(dev, qp, ohdr, bth0, bth2); - return 1; - -bail: - return 0; -} - -/** - * ipath_make_rc_req - construct a request packet (SEND, RDMA r/w, ATOMIC) - * @qp: a pointer to the QP - * - * Return 1 if constructed; otherwise, return 0. - */ -int ipath_make_rc_req(struct ipath_qp *qp) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_other_headers *ohdr; - struct ipath_sge_state *ss; - struct ipath_swqe *wqe; - u32 hwords; - u32 len; - u32 bth0; - u32 bth2; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); - char newreq; - unsigned long flags; - int ret = 0; - - ohdr = &qp->s_hdr.u.oth; - if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) - ohdr = &qp->s_hdr.u.l.oth; - - /* - * The lock is needed to synchronize between the sending tasklet, - * the receive interrupt handler, and timeout resends. - */ - spin_lock_irqsave(&qp->s_lock, flags); - - /* Sending responses has higher priority over sending requests. */ - if ((qp->r_head_ack_queue != qp->s_tail_ack_queue || - (qp->s_flags & IPATH_S_ACK_PENDING) || - qp->s_ack_state != OP(ACKNOWLEDGE)) && - ipath_make_rc_ack(dev, qp, ohdr, pmtu)) - goto done; - - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) { - if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) - goto bail; - /* We are in the error state, flush the work request. */ - if (qp->s_last == qp->s_head) - goto bail; - /* If DMAs are in progress, we can't flush immediately. */ - if (atomic_read(&qp->s_dma_busy)) { - qp->s_flags |= IPATH_S_WAIT_DMA; - goto bail; - } - wqe = get_swqe_ptr(qp, qp->s_last); - ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); - goto done; - } - - /* Leave BUSY set until RNR timeout. */ - if (qp->s_rnr_timeout) { - qp->s_flags |= IPATH_S_WAITING; - goto bail; - } - - /* header size in 32-bit words LRH+BTH = (8+12)/4. */ - hwords = 5; - bth0 = 1 << 22; /* Set M bit */ - - /* Send a request. */ - wqe = get_swqe_ptr(qp, qp->s_cur); - switch (qp->s_state) { - default: - if (!(ib_ipath_state_ops[qp->state] & - IPATH_PROCESS_NEXT_SEND_OK)) - goto bail; - /* - * Resend an old request or start a new one. - * - * We keep track of the current SWQE so that - * we don't reset the "furthest progress" state - * if we need to back up. - */ - newreq = 0; - if (qp->s_cur == qp->s_tail) { - /* Check if send work queue is empty. */ - if (qp->s_tail == qp->s_head) - goto bail; - /* - * If a fence is requested, wait for previous - * RDMA read and atomic operations to finish. - */ - if ((wqe->wr.send_flags & IB_SEND_FENCE) && - qp->s_num_rd_atomic) { - qp->s_flags |= IPATH_S_FENCE_PENDING; - goto bail; - } - wqe->psn = qp->s_next_psn; - newreq = 1; - } - /* - * Note that we have to be careful not to modify the - * original work request since we may need to resend - * it. - */ - len = wqe->length; - ss = &qp->s_sge; - bth2 = 0; - switch (wqe->wr.opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - /* If no credit, return. */ - if (qp->s_lsn != (u32) -1 && - ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) { - qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT; - goto bail; - } - wqe->lpsn = wqe->psn; - if (len > pmtu) { - wqe->lpsn += (len - 1) / pmtu; - qp->s_state = OP(SEND_FIRST); - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_SEND) - qp->s_state = OP(SEND_ONLY); - else { - qp->s_state = OP(SEND_ONLY_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - } - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - bth2 = 1 << 31; /* Request ACK. */ - if (++qp->s_cur == qp->s_size) - qp->s_cur = 0; - break; - - case IB_WR_RDMA_WRITE: - if (newreq && qp->s_lsn != (u32) -1) - qp->s_lsn++; - /* FALLTHROUGH */ - case IB_WR_RDMA_WRITE_WITH_IMM: - /* If no credit, return. */ - if (qp->s_lsn != (u32) -1 && - ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) { - qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT; - goto bail; - } - ohdr->u.rc.reth.vaddr = - cpu_to_be64(wqe->rdma_wr.remote_addr); - ohdr->u.rc.reth.rkey = - cpu_to_be32(wqe->rdma_wr.rkey); - ohdr->u.rc.reth.length = cpu_to_be32(len); - hwords += sizeof(struct ib_reth) / sizeof(u32); - wqe->lpsn = wqe->psn; - if (len > pmtu) { - wqe->lpsn += (len - 1) / pmtu; - qp->s_state = OP(RDMA_WRITE_FIRST); - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_RDMA_WRITE) - qp->s_state = OP(RDMA_WRITE_ONLY); - else { - qp->s_state = - OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE); - /* Immediate data comes after RETH */ - ohdr->u.rc.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - } - bth2 = 1 << 31; /* Request ACK. */ - if (++qp->s_cur == qp->s_size) - qp->s_cur = 0; - break; - - case IB_WR_RDMA_READ: - /* - * Don't allow more operations to be started - * than the QP limits allow. - */ - if (newreq) { - if (qp->s_num_rd_atomic >= - qp->s_max_rd_atomic) { - qp->s_flags |= IPATH_S_RDMAR_PENDING; - goto bail; - } - qp->s_num_rd_atomic++; - if (qp->s_lsn != (u32) -1) - qp->s_lsn++; - /* - * Adjust s_next_psn to count the - * expected number of responses. - */ - if (len > pmtu) - qp->s_next_psn += (len - 1) / pmtu; - wqe->lpsn = qp->s_next_psn++; - } - ohdr->u.rc.reth.vaddr = - cpu_to_be64(wqe->rdma_wr.remote_addr); - ohdr->u.rc.reth.rkey = - cpu_to_be32(wqe->rdma_wr.rkey); - ohdr->u.rc.reth.length = cpu_to_be32(len); - qp->s_state = OP(RDMA_READ_REQUEST); - hwords += sizeof(ohdr->u.rc.reth) / sizeof(u32); - ss = NULL; - len = 0; - if (++qp->s_cur == qp->s_size) - qp->s_cur = 0; - break; - - case IB_WR_ATOMIC_CMP_AND_SWP: - case IB_WR_ATOMIC_FETCH_AND_ADD: - /* - * Don't allow more operations to be started - * than the QP limits allow. - */ - if (newreq) { - if (qp->s_num_rd_atomic >= - qp->s_max_rd_atomic) { - qp->s_flags |= IPATH_S_RDMAR_PENDING; - goto bail; - } - qp->s_num_rd_atomic++; - if (qp->s_lsn != (u32) -1) - qp->s_lsn++; - wqe->lpsn = wqe->psn; - } - if (wqe->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP) { - qp->s_state = OP(COMPARE_SWAP); - ohdr->u.atomic_eth.swap_data = cpu_to_be64( - wqe->atomic_wr.swap); - ohdr->u.atomic_eth.compare_data = cpu_to_be64( - wqe->atomic_wr.compare_add); - } else { - qp->s_state = OP(FETCH_ADD); - ohdr->u.atomic_eth.swap_data = cpu_to_be64( - wqe->atomic_wr.compare_add); - ohdr->u.atomic_eth.compare_data = 0; - } - ohdr->u.atomic_eth.vaddr[0] = cpu_to_be32( - wqe->atomic_wr.remote_addr >> 32); - ohdr->u.atomic_eth.vaddr[1] = cpu_to_be32( - wqe->atomic_wr.remote_addr); - ohdr->u.atomic_eth.rkey = cpu_to_be32( - wqe->atomic_wr.rkey); - hwords += sizeof(struct ib_atomic_eth) / sizeof(u32); - ss = NULL; - len = 0; - if (++qp->s_cur == qp->s_size) - qp->s_cur = 0; - break; - - default: - goto bail; - } - qp->s_sge.sge = wqe->sg_list[0]; - qp->s_sge.sg_list = wqe->sg_list + 1; - qp->s_sge.num_sge = wqe->wr.num_sge; - qp->s_len = wqe->length; - if (newreq) { - qp->s_tail++; - if (qp->s_tail >= qp->s_size) - qp->s_tail = 0; - } - bth2 |= qp->s_psn & IPATH_PSN_MASK; - if (wqe->wr.opcode == IB_WR_RDMA_READ) - qp->s_psn = wqe->lpsn + 1; - else { - qp->s_psn++; - if (ipath_cmp24(qp->s_psn, qp->s_next_psn) > 0) - qp->s_next_psn = qp->s_psn; - } - /* - * Put the QP on the pending list so lost ACKs will cause - * a retry. More than one request can be pending so the - * QP may already be on the dev->pending list. - */ - spin_lock(&dev->pending_lock); - if (list_empty(&qp->timerwait)) - list_add_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); - spin_unlock(&dev->pending_lock); - break; - - case OP(RDMA_READ_RESPONSE_FIRST): - /* - * This case can only happen if a send is restarted. - * See ipath_restart_rc(). - */ - ipath_init_restart(qp, wqe); - /* FALLTHROUGH */ - case OP(SEND_FIRST): - qp->s_state = OP(SEND_MIDDLE); - /* FALLTHROUGH */ - case OP(SEND_MIDDLE): - bth2 = qp->s_psn++ & IPATH_PSN_MASK; - if (ipath_cmp24(qp->s_psn, qp->s_next_psn) > 0) - qp->s_next_psn = qp->s_psn; - ss = &qp->s_sge; - len = qp->s_len; - if (len > pmtu) { - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_SEND) - qp->s_state = OP(SEND_LAST); - else { - qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - } - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - bth2 |= 1 << 31; /* Request ACK. */ - qp->s_cur++; - if (qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - - case OP(RDMA_READ_RESPONSE_LAST): - /* - * This case can only happen if a RDMA write is restarted. - * See ipath_restart_rc(). - */ - ipath_init_restart(qp, wqe); - /* FALLTHROUGH */ - case OP(RDMA_WRITE_FIRST): - qp->s_state = OP(RDMA_WRITE_MIDDLE); - /* FALLTHROUGH */ - case OP(RDMA_WRITE_MIDDLE): - bth2 = qp->s_psn++ & IPATH_PSN_MASK; - if (ipath_cmp24(qp->s_psn, qp->s_next_psn) > 0) - qp->s_next_psn = qp->s_psn; - ss = &qp->s_sge; - len = qp->s_len; - if (len > pmtu) { - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_RDMA_WRITE) - qp->s_state = OP(RDMA_WRITE_LAST); - else { - qp->s_state = OP(RDMA_WRITE_LAST_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - } - bth2 |= 1 << 31; /* Request ACK. */ - qp->s_cur++; - if (qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - - case OP(RDMA_READ_RESPONSE_MIDDLE): - /* - * This case can only happen if a RDMA read is restarted. - * See ipath_restart_rc(). - */ - ipath_init_restart(qp, wqe); - len = ((qp->s_psn - wqe->psn) & IPATH_PSN_MASK) * pmtu; - ohdr->u.rc.reth.vaddr = - cpu_to_be64(wqe->rdma_wr.remote_addr + len); - ohdr->u.rc.reth.rkey = - cpu_to_be32(wqe->rdma_wr.rkey); - ohdr->u.rc.reth.length = cpu_to_be32(qp->s_len); - qp->s_state = OP(RDMA_READ_REQUEST); - hwords += sizeof(ohdr->u.rc.reth) / sizeof(u32); - bth2 = qp->s_psn & IPATH_PSN_MASK; - qp->s_psn = wqe->lpsn + 1; - ss = NULL; - len = 0; - qp->s_cur++; - if (qp->s_cur == qp->s_size) - qp->s_cur = 0; - break; - } - if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT - 1) >= 0) - bth2 |= 1 << 31; /* Request ACK. */ - qp->s_len -= len; - qp->s_hdrwords = hwords; - qp->s_cur_sge = ss; - qp->s_cur_size = len; - ipath_make_ruc_header(dev, qp, ohdr, bth0 | (qp->s_state << 24), bth2); -done: - ret = 1; - goto unlock; - -bail: - qp->s_flags &= ~IPATH_S_BUSY; -unlock: - spin_unlock_irqrestore(&qp->s_lock, flags); - return ret; -} - -/** - * send_rc_ack - Construct an ACK packet and send it - * @qp: a pointer to the QP - * - * This is called from ipath_rc_rcv() and only uses the receive - * side QP state. - * Note that RDMA reads and atomics are handled in the - * send side QP state and tasklet. - */ -static void send_rc_ack(struct ipath_qp *qp) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_devdata *dd; - u16 lrh0; - u32 bth0; - u32 hwords; - u32 __iomem *piobuf; - struct ipath_ib_header hdr; - struct ipath_other_headers *ohdr; - unsigned long flags; - - spin_lock_irqsave(&qp->s_lock, flags); - - /* Don't send ACK or NAK if a RDMA read or atomic is pending. */ - if (qp->r_head_ack_queue != qp->s_tail_ack_queue || - (qp->s_flags & IPATH_S_ACK_PENDING) || - qp->s_ack_state != OP(ACKNOWLEDGE)) - goto queue_ack; - - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Don't try to send ACKs if the link isn't ACTIVE */ - dd = dev->dd; - if (!(dd->ipath_flags & IPATH_LINKACTIVE)) - goto done; - - piobuf = ipath_getpiobuf(dd, 0, NULL); - if (!piobuf) { - /* - * We are out of PIO buffers at the moment. - * Pass responsibility for sending the ACK to the - * send tasklet so that when a PIO buffer becomes - * available, the ACK is sent ahead of other outgoing - * packets. - */ - spin_lock_irqsave(&qp->s_lock, flags); - goto queue_ack; - } - - /* Construct the header. */ - ohdr = &hdr.u.oth; - lrh0 = IPATH_LRH_BTH; - /* header size in 32-bit words LRH+BTH+AETH = (8+12+4)/4. */ - hwords = 6; - if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { - hwords += ipath_make_grh(dev, &hdr.u.l.grh, - &qp->remote_ah_attr.grh, - hwords, 0); - ohdr = &hdr.u.l.oth; - lrh0 = IPATH_LRH_GRH; - } - /* read pkey_index w/o lock (its atomic) */ - bth0 = ipath_get_pkey(dd, qp->s_pkey_index) | - (OP(ACKNOWLEDGE) << 24) | (1 << 22); - if (qp->r_nak_state) - ohdr->u.aeth = cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) | - (qp->r_nak_state << - IPATH_AETH_CREDIT_SHIFT)); - else - ohdr->u.aeth = ipath_compute_aeth(qp); - lrh0 |= qp->remote_ah_attr.sl << 4; - hdr.lrh[0] = cpu_to_be16(lrh0); - hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); - hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC); - hdr.lrh[3] = cpu_to_be16(dd->ipath_lid | - qp->remote_ah_attr.src_path_bits); - ohdr->bth[0] = cpu_to_be32(bth0); - ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); - ohdr->bth[2] = cpu_to_be32(qp->r_ack_psn & IPATH_PSN_MASK); - - writeq(hwords + 1, piobuf); - - if (dd->ipath_flags & IPATH_PIO_FLUSH_WC) { - u32 *hdrp = (u32 *) &hdr; - - ipath_flush_wc(); - __iowrite32_copy(piobuf + 2, hdrp, hwords - 1); - ipath_flush_wc(); - __raw_writel(hdrp[hwords - 1], piobuf + hwords + 1); - } else - __iowrite32_copy(piobuf + 2, (u32 *) &hdr, hwords); - - ipath_flush_wc(); - - dev->n_unicast_xmit++; - goto done; - -queue_ack: - if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK) { - dev->n_rc_qacks++; - qp->s_flags |= IPATH_S_ACK_PENDING; - qp->s_nak_state = qp->r_nak_state; - qp->s_ack_psn = qp->r_ack_psn; - - /* Schedule the send tasklet. */ - ipath_schedule_send(qp); - } - spin_unlock_irqrestore(&qp->s_lock, flags); -done: - return; -} - -/** - * reset_psn - reset the QP state to send starting from PSN - * @qp: the QP - * @psn: the packet sequence number to restart at - * - * This is called from ipath_rc_rcv() to process an incoming RC ACK - * for the given QP. - * Called at interrupt level with the QP s_lock held. - */ -static void reset_psn(struct ipath_qp *qp, u32 psn) -{ - u32 n = qp->s_last; - struct ipath_swqe *wqe = get_swqe_ptr(qp, n); - u32 opcode; - - qp->s_cur = n; - - /* - * If we are starting the request from the beginning, - * let the normal send code handle initialization. - */ - if (ipath_cmp24(psn, wqe->psn) <= 0) { - qp->s_state = OP(SEND_LAST); - goto done; - } - - /* Find the work request opcode corresponding to the given PSN. */ - opcode = wqe->wr.opcode; - for (;;) { - int diff; - - if (++n == qp->s_size) - n = 0; - if (n == qp->s_tail) - break; - wqe = get_swqe_ptr(qp, n); - diff = ipath_cmp24(psn, wqe->psn); - if (diff < 0) - break; - qp->s_cur = n; - /* - * If we are starting the request from the beginning, - * let the normal send code handle initialization. - */ - if (diff == 0) { - qp->s_state = OP(SEND_LAST); - goto done; - } - opcode = wqe->wr.opcode; - } - - /* - * Set the state to restart in the middle of a request. - * Don't change the s_sge, s_cur_sge, or s_cur_size. - * See ipath_make_rc_req(). - */ - switch (opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_FIRST); - break; - - case IB_WR_RDMA_WRITE: - case IB_WR_RDMA_WRITE_WITH_IMM: - qp->s_state = OP(RDMA_READ_RESPONSE_LAST); - break; - - case IB_WR_RDMA_READ: - qp->s_state = OP(RDMA_READ_RESPONSE_MIDDLE); - break; - - default: - /* - * This case shouldn't happen since its only - * one PSN per req. - */ - qp->s_state = OP(SEND_LAST); - } -done: - qp->s_psn = psn; -} - -/** - * ipath_restart_rc - back up requester to resend the last un-ACKed request - * @qp: the QP to restart - * @psn: packet sequence number for the request - * @wc: the work completion request - * - * The QP s_lock should be held and interrupts disabled. - */ -void ipath_restart_rc(struct ipath_qp *qp, u32 psn) -{ - struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); - struct ipath_ibdev *dev; - - if (qp->s_retry == 0) { - ipath_send_complete(qp, wqe, IB_WC_RETRY_EXC_ERR); - ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); - goto bail; - } - qp->s_retry--; - - /* - * Remove the QP from the timeout queue. - * Note: it may already have been removed by ipath_ib_timer(). - */ - dev = to_idev(qp->ibqp.device); - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - spin_unlock(&dev->pending_lock); - - if (wqe->wr.opcode == IB_WR_RDMA_READ) - dev->n_rc_resends++; - else - dev->n_rc_resends += (qp->s_psn - psn) & IPATH_PSN_MASK; - - reset_psn(qp, psn); - ipath_schedule_send(qp); - -bail: - return; -} - -static inline void update_last_psn(struct ipath_qp *qp, u32 psn) -{ - qp->s_last_psn = psn; -} - -/** - * do_rc_ack - process an incoming RC ACK - * @qp: the QP the ACK came in on - * @psn: the packet sequence number of the ACK - * @opcode: the opcode of the request that resulted in the ACK - * - * This is called from ipath_rc_rcv_resp() to process an incoming RC ACK - * for the given QP. - * Called at interrupt level with the QP s_lock held and interrupts disabled. - * Returns 1 if OK, 0 if current operation should be aborted (NAK). - */ -static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, - u64 val) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ib_wc wc; - enum ib_wc_status status; - struct ipath_swqe *wqe; - int ret = 0; - u32 ack_psn; - int diff; - - /* - * Remove the QP from the timeout queue (or RNR timeout queue). - * If ipath_ib_timer() has already removed it, - * it's OK since we hold the QP s_lock and ipath_restart_rc() - * just won't find anything to restart if we ACK everything. - */ - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - spin_unlock(&dev->pending_lock); - - /* - * Note that NAKs implicitly ACK outstanding SEND and RDMA write - * requests and implicitly NAK RDMA read and atomic requests issued - * before the NAK'ed request. The MSN won't include the NAK'ed - * request but will include an ACK'ed request(s). - */ - ack_psn = psn; - if (aeth >> 29) - ack_psn--; - wqe = get_swqe_ptr(qp, qp->s_last); - - /* - * The MSN might be for a later WQE than the PSN indicates so - * only complete WQEs that the PSN finishes. - */ - while ((diff = ipath_cmp24(ack_psn, wqe->lpsn)) >= 0) { - /* - * RDMA_READ_RESPONSE_ONLY is a special case since - * we want to generate completion events for everything - * before the RDMA read, copy the data, then generate - * the completion for the read. - */ - if (wqe->wr.opcode == IB_WR_RDMA_READ && - opcode == OP(RDMA_READ_RESPONSE_ONLY) && - diff == 0) { - ret = 1; - goto bail; - } - /* - * If this request is a RDMA read or atomic, and the ACK is - * for a later operation, this ACK NAKs the RDMA read or - * atomic. In other words, only a RDMA_READ_LAST or ONLY - * can ACK a RDMA read and likewise for atomic ops. Note - * that the NAK case can only happen if relaxed ordering is - * used and requests are sent after an RDMA read or atomic - * is sent but before the response is received. - */ - if ((wqe->wr.opcode == IB_WR_RDMA_READ && - (opcode != OP(RDMA_READ_RESPONSE_LAST) || diff != 0)) || - ((wqe->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP || - wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) && - (opcode != OP(ATOMIC_ACKNOWLEDGE) || diff != 0))) { - /* - * The last valid PSN seen is the previous - * request's. - */ - update_last_psn(qp, wqe->psn - 1); - /* Retry this request. */ - ipath_restart_rc(qp, wqe->psn); - /* - * No need to process the ACK/NAK since we are - * restarting an earlier request. - */ - goto bail; - } - if (wqe->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP || - wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) - *(u64 *) wqe->sg_list[0].vaddr = val; - if (qp->s_num_rd_atomic && - (wqe->wr.opcode == IB_WR_RDMA_READ || - wqe->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP || - wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD)) { - qp->s_num_rd_atomic--; - /* Restart sending task if fence is complete */ - if (((qp->s_flags & IPATH_S_FENCE_PENDING) && - !qp->s_num_rd_atomic) || - qp->s_flags & IPATH_S_RDMAR_PENDING) - ipath_schedule_send(qp); - } - /* Post a send completion queue entry if requested. */ - if (!(qp->s_flags & IPATH_S_SIGNAL_REQ_WR) || - (wqe->wr.send_flags & IB_SEND_SIGNALED)) { - memset(&wc, 0, sizeof wc); - wc.wr_id = wqe->wr.wr_id; - wc.status = IB_WC_SUCCESS; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.byte_len = wqe->length; - wc.qp = &qp->ibqp; - wc.src_qp = qp->remote_qpn; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 0); - } - qp->s_retry = qp->s_retry_cnt; - /* - * If we are completing a request which is in the process of - * being resent, we can stop resending it since we know the - * responder has already seen it. - */ - if (qp->s_last == qp->s_cur) { - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; - qp->s_last = qp->s_cur; - if (qp->s_last == qp->s_tail) - break; - wqe = get_swqe_ptr(qp, qp->s_cur); - qp->s_state = OP(SEND_LAST); - qp->s_psn = wqe->psn; - } else { - if (++qp->s_last >= qp->s_size) - qp->s_last = 0; - if (qp->state == IB_QPS_SQD && qp->s_last == qp->s_cur) - qp->s_draining = 0; - if (qp->s_last == qp->s_tail) - break; - wqe = get_swqe_ptr(qp, qp->s_last); - } - } - - switch (aeth >> 29) { - case 0: /* ACK */ - dev->n_rc_acks++; - /* If this is a partial ACK, reset the retransmit timer. */ - if (qp->s_last != qp->s_tail) { - spin_lock(&dev->pending_lock); - if (list_empty(&qp->timerwait)) - list_add_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); - spin_unlock(&dev->pending_lock); - /* - * If we get a partial ACK for a resent operation, - * we can stop resending the earlier packets and - * continue with the next packet the receiver wants. - */ - if (ipath_cmp24(qp->s_psn, psn) <= 0) { - reset_psn(qp, psn + 1); - ipath_schedule_send(qp); - } - } else if (ipath_cmp24(qp->s_psn, psn) <= 0) { - qp->s_state = OP(SEND_LAST); - qp->s_psn = psn + 1; - } - ipath_get_credit(qp, aeth); - qp->s_rnr_retry = qp->s_rnr_retry_cnt; - qp->s_retry = qp->s_retry_cnt; - update_last_psn(qp, psn); - ret = 1; - goto bail; - - case 1: /* RNR NAK */ - dev->n_rnr_naks++; - if (qp->s_last == qp->s_tail) - goto bail; - if (qp->s_rnr_retry == 0) { - status = IB_WC_RNR_RETRY_EXC_ERR; - goto class_b; - } - if (qp->s_rnr_retry_cnt < 7) - qp->s_rnr_retry--; - - /* The last valid PSN is the previous PSN. */ - update_last_psn(qp, psn - 1); - - if (wqe->wr.opcode == IB_WR_RDMA_READ) - dev->n_rc_resends++; - else - dev->n_rc_resends += - (qp->s_psn - psn) & IPATH_PSN_MASK; - - reset_psn(qp, psn); - - qp->s_rnr_timeout = - ib_ipath_rnr_table[(aeth >> IPATH_AETH_CREDIT_SHIFT) & - IPATH_AETH_CREDIT_MASK]; - ipath_insert_rnr_queue(qp); - ipath_schedule_send(qp); - goto bail; - - case 3: /* NAK */ - if (qp->s_last == qp->s_tail) - goto bail; - /* The last valid PSN is the previous PSN. */ - update_last_psn(qp, psn - 1); - switch ((aeth >> IPATH_AETH_CREDIT_SHIFT) & - IPATH_AETH_CREDIT_MASK) { - case 0: /* PSN sequence error */ - dev->n_seq_naks++; - /* - * Back up to the responder's expected PSN. - * Note that we might get a NAK in the middle of an - * RDMA READ response which terminates the RDMA - * READ. - */ - ipath_restart_rc(qp, psn); - break; - - case 1: /* Invalid Request */ - status = IB_WC_REM_INV_REQ_ERR; - dev->n_other_naks++; - goto class_b; - - case 2: /* Remote Access Error */ - status = IB_WC_REM_ACCESS_ERR; - dev->n_other_naks++; - goto class_b; - - case 3: /* Remote Operation Error */ - status = IB_WC_REM_OP_ERR; - dev->n_other_naks++; - class_b: - ipath_send_complete(qp, wqe, status); - ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); - break; - - default: - /* Ignore other reserved NAK error codes */ - goto reserved; - } - qp->s_rnr_retry = qp->s_rnr_retry_cnt; - goto bail; - - default: /* 2: reserved */ - reserved: - /* Ignore reserved NAK codes. */ - goto bail; - } - -bail: - return ret; -} - -/** - * ipath_rc_rcv_resp - process an incoming RC response packet - * @dev: the device this packet came in on - * @ohdr: the other headers for this packet - * @data: the packet data - * @tlen: the packet length - * @qp: the QP for this packet - * @opcode: the opcode for this packet - * @psn: the packet sequence number for this packet - * @hdrsize: the header length - * @pmtu: the path MTU - * @header_in_data: true if part of the header data is in the data buffer - * - * This is called from ipath_rc_rcv() to process an incoming RC response - * packet for the given QP. - * Called at interrupt level. - */ -static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, - struct ipath_other_headers *ohdr, - void *data, u32 tlen, - struct ipath_qp *qp, - u32 opcode, - u32 psn, u32 hdrsize, u32 pmtu, - int header_in_data) -{ - struct ipath_swqe *wqe; - enum ib_wc_status status; - unsigned long flags; - int diff; - u32 pad; - u32 aeth; - u64 val; - - spin_lock_irqsave(&qp->s_lock, flags); - - /* Double check we can process this now that we hold the s_lock. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) - goto ack_done; - - /* Ignore invalid responses. */ - if (ipath_cmp24(psn, qp->s_next_psn) >= 0) - goto ack_done; - - /* Ignore duplicate responses. */ - diff = ipath_cmp24(psn, qp->s_last_psn); - if (unlikely(diff <= 0)) { - /* Update credits for "ghost" ACKs */ - if (diff == 0 && opcode == OP(ACKNOWLEDGE)) { - if (!header_in_data) - aeth = be32_to_cpu(ohdr->u.aeth); - else { - aeth = be32_to_cpu(((__be32 *) data)[0]); - data += sizeof(__be32); - } - if ((aeth >> 29) == 0) - ipath_get_credit(qp, aeth); - } - goto ack_done; - } - - if (unlikely(qp->s_last == qp->s_tail)) - goto ack_done; - wqe = get_swqe_ptr(qp, qp->s_last); - status = IB_WC_SUCCESS; - - switch (opcode) { - case OP(ACKNOWLEDGE): - case OP(ATOMIC_ACKNOWLEDGE): - case OP(RDMA_READ_RESPONSE_FIRST): - if (!header_in_data) - aeth = be32_to_cpu(ohdr->u.aeth); - else { - aeth = be32_to_cpu(((__be32 *) data)[0]); - data += sizeof(__be32); - } - if (opcode == OP(ATOMIC_ACKNOWLEDGE)) { - if (!header_in_data) { - __be32 *p = ohdr->u.at.atomic_ack_eth; - - val = ((u64) be32_to_cpu(p[0]) << 32) | - be32_to_cpu(p[1]); - } else - val = be64_to_cpu(((__be64 *) data)[0]); - } else - val = 0; - if (!do_rc_ack(qp, aeth, psn, opcode, val) || - opcode != OP(RDMA_READ_RESPONSE_FIRST)) - goto ack_done; - hdrsize += 4; - wqe = get_swqe_ptr(qp, qp->s_last); - if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) - goto ack_op_err; - qp->r_flags &= ~IPATH_R_RDMAR_SEQ; - /* - * If this is a response to a resent RDMA read, we - * have to be careful to copy the data to the right - * location. - */ - qp->s_rdma_read_len = restart_sge(&qp->s_rdma_read_sge, - wqe, psn, pmtu); - goto read_middle; - - case OP(RDMA_READ_RESPONSE_MIDDLE): - /* no AETH, no ACK */ - if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) { - dev->n_rdma_seq++; - if (qp->r_flags & IPATH_R_RDMAR_SEQ) - goto ack_done; - qp->r_flags |= IPATH_R_RDMAR_SEQ; - ipath_restart_rc(qp, qp->s_last_psn + 1); - goto ack_done; - } - if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) - goto ack_op_err; - read_middle: - if (unlikely(tlen != (hdrsize + pmtu + 4))) - goto ack_len_err; - if (unlikely(pmtu >= qp->s_rdma_read_len)) - goto ack_len_err; - - /* We got a response so update the timeout. */ - spin_lock(&dev->pending_lock); - if (qp->s_rnr_timeout == 0 && !list_empty(&qp->timerwait)) - list_move_tail(&qp->timerwait, - &dev->pending[dev->pending_index]); - spin_unlock(&dev->pending_lock); - - if (opcode == OP(RDMA_READ_RESPONSE_MIDDLE)) - qp->s_retry = qp->s_retry_cnt; - - /* - * Update the RDMA receive state but do the copy w/o - * holding the locks and blocking interrupts. - */ - qp->s_rdma_read_len -= pmtu; - update_last_psn(qp, psn); - spin_unlock_irqrestore(&qp->s_lock, flags); - ipath_copy_sge(&qp->s_rdma_read_sge, data, pmtu); - goto bail; - - case OP(RDMA_READ_RESPONSE_ONLY): - if (!header_in_data) - aeth = be32_to_cpu(ohdr->u.aeth); - else - aeth = be32_to_cpu(((__be32 *) data)[0]); - if (!do_rc_ack(qp, aeth, psn, opcode, 0)) - goto ack_done; - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* - * Check that the data size is >= 0 && <= pmtu. - * Remember to account for the AETH header (4) and - * ICRC (4). - */ - if (unlikely(tlen < (hdrsize + pad + 8))) - goto ack_len_err; - /* - * If this is a response to a resent RDMA read, we - * have to be careful to copy the data to the right - * location. - */ - wqe = get_swqe_ptr(qp, qp->s_last); - qp->s_rdma_read_len = restart_sge(&qp->s_rdma_read_sge, - wqe, psn, pmtu); - goto read_last; - - case OP(RDMA_READ_RESPONSE_LAST): - /* ACKs READ req. */ - if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) { - dev->n_rdma_seq++; - if (qp->r_flags & IPATH_R_RDMAR_SEQ) - goto ack_done; - qp->r_flags |= IPATH_R_RDMAR_SEQ; - ipath_restart_rc(qp, qp->s_last_psn + 1); - goto ack_done; - } - if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) - goto ack_op_err; - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* - * Check that the data size is >= 1 && <= pmtu. - * Remember to account for the AETH header (4) and - * ICRC (4). - */ - if (unlikely(tlen <= (hdrsize + pad + 8))) - goto ack_len_err; - read_last: - tlen -= hdrsize + pad + 8; - if (unlikely(tlen != qp->s_rdma_read_len)) - goto ack_len_err; - if (!header_in_data) - aeth = be32_to_cpu(ohdr->u.aeth); - else { - aeth = be32_to_cpu(((__be32 *) data)[0]); - data += sizeof(__be32); - } - ipath_copy_sge(&qp->s_rdma_read_sge, data, tlen); - (void) do_rc_ack(qp, aeth, psn, - OP(RDMA_READ_RESPONSE_LAST), 0); - goto ack_done; - } - -ack_op_err: - status = IB_WC_LOC_QP_OP_ERR; - goto ack_err; - -ack_len_err: - status = IB_WC_LOC_LEN_ERR; -ack_err: - ipath_send_complete(qp, wqe, status); - ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); -ack_done: - spin_unlock_irqrestore(&qp->s_lock, flags); -bail: - return; -} - -/** - * ipath_rc_rcv_error - process an incoming duplicate or error RC packet - * @dev: the device this packet came in on - * @ohdr: the other headers for this packet - * @data: the packet data - * @qp: the QP for this packet - * @opcode: the opcode for this packet - * @psn: the packet sequence number for this packet - * @diff: the difference between the PSN and the expected PSN - * @header_in_data: true if part of the header data is in the data buffer - * - * This is called from ipath_rc_rcv() to process an unexpected - * incoming RC packet for the given QP. - * Called at interrupt level. - * Return 1 if no more processing is needed; otherwise return 0 to - * schedule a response to be sent. - */ -static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, - struct ipath_other_headers *ohdr, - void *data, - struct ipath_qp *qp, - u32 opcode, - u32 psn, - int diff, - int header_in_data) -{ - struct ipath_ack_entry *e; - u8 i, prev; - int old_req; - unsigned long flags; - - if (diff > 0) { - /* - * Packet sequence error. - * A NAK will ACK earlier sends and RDMA writes. - * Don't queue the NAK if we already sent one. - */ - if (!qp->r_nak_state) { - qp->r_nak_state = IB_NAK_PSN_ERROR; - /* Use the expected PSN. */ - qp->r_ack_psn = qp->r_psn; - goto send_ack; - } - goto done; - } - - /* - * Handle a duplicate request. Don't re-execute SEND, RDMA - * write or atomic op. Don't NAK errors, just silently drop - * the duplicate request. Note that r_sge, r_len, and - * r_rcv_len may be in use so don't modify them. - * - * We are supposed to ACK the earliest duplicate PSN but we - * can coalesce an outstanding duplicate ACK. We have to - * send the earliest so that RDMA reads can be restarted at - * the requester's expected PSN. - * - * First, find where this duplicate PSN falls within the - * ACKs previously sent. - */ - psn &= IPATH_PSN_MASK; - e = NULL; - old_req = 1; - - spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this now that we hold the s_lock. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) - goto unlock_done; - - for (i = qp->r_head_ack_queue; ; i = prev) { - if (i == qp->s_tail_ack_queue) - old_req = 0; - if (i) - prev = i - 1; - else - prev = IPATH_MAX_RDMA_ATOMIC; - if (prev == qp->r_head_ack_queue) { - e = NULL; - break; - } - e = &qp->s_ack_queue[prev]; - if (!e->opcode) { - e = NULL; - break; - } - if (ipath_cmp24(psn, e->psn) >= 0) { - if (prev == qp->s_tail_ack_queue) - old_req = 0; - break; - } - } - switch (opcode) { - case OP(RDMA_READ_REQUEST): { - struct ib_reth *reth; - u32 offset; - u32 len; - - /* - * If we didn't find the RDMA read request in the ack queue, - * or the send tasklet is already backed up to send an - * earlier entry, we can ignore this request. - */ - if (!e || e->opcode != OP(RDMA_READ_REQUEST) || old_req) - goto unlock_done; - /* RETH comes after BTH */ - if (!header_in_data) - reth = &ohdr->u.rc.reth; - else { - reth = (struct ib_reth *)data; - data += sizeof(*reth); - } - /* - * Address range must be a subset of the original - * request and start on pmtu boundaries. - * We reuse the old ack_queue slot since the requester - * should not back up and request an earlier PSN for the - * same request. - */ - offset = ((psn - e->psn) & IPATH_PSN_MASK) * - ib_mtu_enum_to_int(qp->path_mtu); - len = be32_to_cpu(reth->length); - if (unlikely(offset + len > e->rdma_sge.sge.sge_length)) - goto unlock_done; - if (len != 0) { - u32 rkey = be32_to_cpu(reth->rkey); - u64 vaddr = be64_to_cpu(reth->vaddr); - int ok; - - ok = ipath_rkey_ok(qp, &e->rdma_sge, - len, vaddr, rkey, - IB_ACCESS_REMOTE_READ); - if (unlikely(!ok)) - goto unlock_done; - } else { - e->rdma_sge.sg_list = NULL; - e->rdma_sge.num_sge = 0; - e->rdma_sge.sge.mr = NULL; - e->rdma_sge.sge.vaddr = NULL; - e->rdma_sge.sge.length = 0; - e->rdma_sge.sge.sge_length = 0; - } - e->psn = psn; - qp->s_ack_state = OP(ACKNOWLEDGE); - qp->s_tail_ack_queue = prev; - break; - } - - case OP(COMPARE_SWAP): - case OP(FETCH_ADD): { - /* - * If we didn't find the atomic request in the ack queue - * or the send tasklet is already backed up to send an - * earlier entry, we can ignore this request. - */ - if (!e || e->opcode != (u8) opcode || old_req) - goto unlock_done; - qp->s_ack_state = OP(ACKNOWLEDGE); - qp->s_tail_ack_queue = prev; - break; - } - - default: - if (old_req) - goto unlock_done; - /* - * Resend the most recent ACK if this request is - * after all the previous RDMA reads and atomics. - */ - if (i == qp->r_head_ack_queue) { - spin_unlock_irqrestore(&qp->s_lock, flags); - qp->r_nak_state = 0; - qp->r_ack_psn = qp->r_psn - 1; - goto send_ack; - } - /* - * Try to send a simple ACK to work around a Mellanox bug - * which doesn't accept a RDMA read response or atomic - * response as an ACK for earlier SENDs or RDMA writes. - */ - if (qp->r_head_ack_queue == qp->s_tail_ack_queue && - !(qp->s_flags & IPATH_S_ACK_PENDING) && - qp->s_ack_state == OP(ACKNOWLEDGE)) { - spin_unlock_irqrestore(&qp->s_lock, flags); - qp->r_nak_state = 0; - qp->r_ack_psn = qp->s_ack_queue[i].psn - 1; - goto send_ack; - } - /* - * Resend the RDMA read or atomic op which - * ACKs this duplicate request. - */ - qp->s_ack_state = OP(ACKNOWLEDGE); - qp->s_tail_ack_queue = i; - break; - } - qp->r_nak_state = 0; - ipath_schedule_send(qp); - -unlock_done: - spin_unlock_irqrestore(&qp->s_lock, flags); -done: - return 1; - -send_ack: - return 0; -} - -void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err) -{ - unsigned long flags; - int lastwqe; - - spin_lock_irqsave(&qp->s_lock, flags); - lastwqe = ipath_error_qp(qp, err); - spin_unlock_irqrestore(&qp->s_lock, flags); - - if (lastwqe) { - struct ib_event ev; - - ev.device = qp->ibqp.device; - ev.element.qp = &qp->ibqp; - ev.event = IB_EVENT_QP_LAST_WQE_REACHED; - qp->ibqp.event_handler(&ev, qp->ibqp.qp_context); - } -} - -static inline void ipath_update_ack_queue(struct ipath_qp *qp, unsigned n) -{ - unsigned next; - - next = n + 1; - if (next > IPATH_MAX_RDMA_ATOMIC) - next = 0; - if (n == qp->s_tail_ack_queue) { - qp->s_tail_ack_queue = next; - qp->s_ack_state = OP(ACKNOWLEDGE); - } -} - -/** - * ipath_rc_rcv - process an incoming RC packet - * @dev: the device this packet came in on - * @hdr: the header of this packet - * @has_grh: true if the header has a GRH - * @data: the packet data - * @tlen: the packet length - * @qp: the QP for this packet - * - * This is called from ipath_qp_rcv() to process an incoming RC packet - * for the given QP. - * Called at interrupt level. - */ -void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp) -{ - struct ipath_other_headers *ohdr; - u32 opcode; - u32 hdrsize; - u32 psn; - u32 pad; - struct ib_wc wc; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); - int diff; - struct ib_reth *reth; - int header_in_data; - unsigned long flags; - - /* Validate the SLID. See Ch. 9.6.1.5 */ - if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid)) - goto done; - - /* Check for GRH */ - if (!has_grh) { - ohdr = &hdr->u.oth; - hdrsize = 8 + 12; /* LRH + BTH */ - psn = be32_to_cpu(ohdr->bth[2]); - header_in_data = 0; - } else { - ohdr = &hdr->u.l.oth; - hdrsize = 8 + 40 + 12; /* LRH + GRH + BTH */ - /* - * The header with GRH is 60 bytes and the core driver sets - * the eager header buffer size to 56 bytes so the last 4 - * bytes of the BTH header (PSN) is in the data buffer. - */ - header_in_data = dev->dd->ipath_rcvhdrentsize == 16; - if (header_in_data) { - psn = be32_to_cpu(((__be32 *) data)[0]); - data += sizeof(__be32); - } else - psn = be32_to_cpu(ohdr->bth[2]); - } - - /* - * Process responses (ACKs) before anything else. Note that the - * packet sequence number will be for something in the send work - * queue rather than the expected receive packet sequence number. - * In other words, this QP is the requester. - */ - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; - if (opcode >= OP(RDMA_READ_RESPONSE_FIRST) && - opcode <= OP(ATOMIC_ACKNOWLEDGE)) { - ipath_rc_rcv_resp(dev, ohdr, data, tlen, qp, opcode, psn, - hdrsize, pmtu, header_in_data); - goto done; - } - - /* Compute 24 bits worth of difference. */ - diff = ipath_cmp24(psn, qp->r_psn); - if (unlikely(diff)) { - if (ipath_rc_rcv_error(dev, ohdr, data, qp, opcode, - psn, diff, header_in_data)) - goto done; - goto send_ack; - } - - /* Check for opcode sequence errors. */ - switch (qp->r_state) { - case OP(SEND_FIRST): - case OP(SEND_MIDDLE): - if (opcode == OP(SEND_MIDDLE) || - opcode == OP(SEND_LAST) || - opcode == OP(SEND_LAST_WITH_IMMEDIATE)) - break; - goto nack_inv; - - case OP(RDMA_WRITE_FIRST): - case OP(RDMA_WRITE_MIDDLE): - if (opcode == OP(RDMA_WRITE_MIDDLE) || - opcode == OP(RDMA_WRITE_LAST) || - opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE)) - break; - goto nack_inv; - - default: - if (opcode == OP(SEND_MIDDLE) || - opcode == OP(SEND_LAST) || - opcode == OP(SEND_LAST_WITH_IMMEDIATE) || - opcode == OP(RDMA_WRITE_MIDDLE) || - opcode == OP(RDMA_WRITE_LAST) || - opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE)) - goto nack_inv; - /* - * Note that it is up to the requester to not send a new - * RDMA read or atomic operation before receiving an ACK - * for the previous operation. - */ - break; - } - - memset(&wc, 0, sizeof wc); - - /* OK, process the packet. */ - switch (opcode) { - case OP(SEND_FIRST): - if (!ipath_get_rwqe(qp, 0)) - goto rnr_nak; - qp->r_rcv_len = 0; - /* FALLTHROUGH */ - case OP(SEND_MIDDLE): - case OP(RDMA_WRITE_MIDDLE): - send_middle: - /* Check for invalid length PMTU or posted rwqe len. */ - if (unlikely(tlen != (hdrsize + pmtu + 4))) - goto nack_inv; - qp->r_rcv_len += pmtu; - if (unlikely(qp->r_rcv_len > qp->r_len)) - goto nack_inv; - ipath_copy_sge(&qp->r_sge, data, pmtu); - break; - - case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE): - /* consume RWQE */ - if (!ipath_get_rwqe(qp, 1)) - goto rnr_nak; - goto send_last_imm; - - case OP(SEND_ONLY): - case OP(SEND_ONLY_WITH_IMMEDIATE): - if (!ipath_get_rwqe(qp, 0)) - goto rnr_nak; - qp->r_rcv_len = 0; - if (opcode == OP(SEND_ONLY)) - goto send_last; - /* FALLTHROUGH */ - case OP(SEND_LAST_WITH_IMMEDIATE): - send_last_imm: - if (header_in_data) { - wc.ex.imm_data = *(__be32 *) data; - data += sizeof(__be32); - } else { - /* Immediate data comes after BTH */ - wc.ex.imm_data = ohdr->u.imm_data; - } - hdrsize += 4; - wc.wc_flags = IB_WC_WITH_IMM; - /* FALLTHROUGH */ - case OP(SEND_LAST): - case OP(RDMA_WRITE_LAST): - send_last: - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* Check for invalid length. */ - /* XXX LAST len should be >= 1 */ - if (unlikely(tlen < (hdrsize + pad + 4))) - goto nack_inv; - /* Don't count the CRC. */ - tlen -= (hdrsize + pad + 4); - wc.byte_len = tlen + qp->r_rcv_len; - if (unlikely(wc.byte_len > qp->r_len)) - goto nack_inv; - ipath_copy_sge(&qp->r_sge, data, tlen); - qp->r_msn++; - if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) - break; - wc.wr_id = qp->r_wr_id; - wc.status = IB_WC_SUCCESS; - if (opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE) || - opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) - wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; - else - wc.opcode = IB_WC_RECV; - wc.qp = &qp->ibqp; - wc.src_qp = qp->remote_qpn; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(1 << 23)) != 0); - break; - - case OP(RDMA_WRITE_FIRST): - case OP(RDMA_WRITE_ONLY): - case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE): - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_WRITE))) - goto nack_inv; - /* consume RWQE */ - /* RETH comes after BTH */ - if (!header_in_data) - reth = &ohdr->u.rc.reth; - else { - reth = (struct ib_reth *)data; - data += sizeof(*reth); - } - hdrsize += sizeof(*reth); - qp->r_len = be32_to_cpu(reth->length); - qp->r_rcv_len = 0; - if (qp->r_len != 0) { - u32 rkey = be32_to_cpu(reth->rkey); - u64 vaddr = be64_to_cpu(reth->vaddr); - int ok; - - /* Check rkey & NAK */ - ok = ipath_rkey_ok(qp, &qp->r_sge, - qp->r_len, vaddr, rkey, - IB_ACCESS_REMOTE_WRITE); - if (unlikely(!ok)) - goto nack_acc; - } else { - qp->r_sge.sg_list = NULL; - qp->r_sge.sge.mr = NULL; - qp->r_sge.sge.vaddr = NULL; - qp->r_sge.sge.length = 0; - qp->r_sge.sge.sge_length = 0; - } - if (opcode == OP(RDMA_WRITE_FIRST)) - goto send_middle; - else if (opcode == OP(RDMA_WRITE_ONLY)) - goto send_last; - if (!ipath_get_rwqe(qp, 1)) - goto rnr_nak; - goto send_last_imm; - - case OP(RDMA_READ_REQUEST): { - struct ipath_ack_entry *e; - u32 len; - u8 next; - - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_READ))) - goto nack_inv; - next = qp->r_head_ack_queue + 1; - if (next > IPATH_MAX_RDMA_ATOMIC) - next = 0; - spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this while holding the s_lock. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) - goto unlock; - if (unlikely(next == qp->s_tail_ack_queue)) { - if (!qp->s_ack_queue[next].sent) - goto nack_inv_unlck; - ipath_update_ack_queue(qp, next); - } - e = &qp->s_ack_queue[qp->r_head_ack_queue]; - /* RETH comes after BTH */ - if (!header_in_data) - reth = &ohdr->u.rc.reth; - else { - reth = (struct ib_reth *)data; - data += sizeof(*reth); - } - len = be32_to_cpu(reth->length); - if (len) { - u32 rkey = be32_to_cpu(reth->rkey); - u64 vaddr = be64_to_cpu(reth->vaddr); - int ok; - - /* Check rkey & NAK */ - ok = ipath_rkey_ok(qp, &e->rdma_sge, len, vaddr, - rkey, IB_ACCESS_REMOTE_READ); - if (unlikely(!ok)) - goto nack_acc_unlck; - /* - * Update the next expected PSN. We add 1 later - * below, so only add the remainder here. - */ - if (len > pmtu) - qp->r_psn += (len - 1) / pmtu; - } else { - e->rdma_sge.sg_list = NULL; - e->rdma_sge.num_sge = 0; - e->rdma_sge.sge.mr = NULL; - e->rdma_sge.sge.vaddr = NULL; - e->rdma_sge.sge.length = 0; - e->rdma_sge.sge.sge_length = 0; - } - e->opcode = opcode; - e->sent = 0; - e->psn = psn; - /* - * We need to increment the MSN here instead of when we - * finish sending the result since a duplicate request would - * increment it more than once. - */ - qp->r_msn++; - qp->r_psn++; - qp->r_state = opcode; - qp->r_nak_state = 0; - qp->r_head_ack_queue = next; - - /* Schedule the send tasklet. */ - ipath_schedule_send(qp); - - goto unlock; - } - - case OP(COMPARE_SWAP): - case OP(FETCH_ADD): { - struct ib_atomic_eth *ateth; - struct ipath_ack_entry *e; - u64 vaddr; - atomic64_t *maddr; - u64 sdata; - u32 rkey; - u8 next; - - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_ATOMIC))) - goto nack_inv; - next = qp->r_head_ack_queue + 1; - if (next > IPATH_MAX_RDMA_ATOMIC) - next = 0; - spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this while holding the s_lock. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) - goto unlock; - if (unlikely(next == qp->s_tail_ack_queue)) { - if (!qp->s_ack_queue[next].sent) - goto nack_inv_unlck; - ipath_update_ack_queue(qp, next); - } - if (!header_in_data) - ateth = &ohdr->u.atomic_eth; - else - ateth = (struct ib_atomic_eth *)data; - vaddr = ((u64) be32_to_cpu(ateth->vaddr[0]) << 32) | - be32_to_cpu(ateth->vaddr[1]); - if (unlikely(vaddr & (sizeof(u64) - 1))) - goto nack_inv_unlck; - rkey = be32_to_cpu(ateth->rkey); - /* Check rkey & NAK */ - if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, - sizeof(u64), vaddr, rkey, - IB_ACCESS_REMOTE_ATOMIC))) - goto nack_acc_unlck; - /* Perform atomic OP and save result. */ - maddr = (atomic64_t *) qp->r_sge.sge.vaddr; - sdata = be64_to_cpu(ateth->swap_data); - e = &qp->s_ack_queue[qp->r_head_ack_queue]; - e->atomic_data = (opcode == OP(FETCH_ADD)) ? - (u64) atomic64_add_return(sdata, maddr) - sdata : - (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, - be64_to_cpu(ateth->compare_data), - sdata); - e->opcode = opcode; - e->sent = 0; - e->psn = psn & IPATH_PSN_MASK; - qp->r_msn++; - qp->r_psn++; - qp->r_state = opcode; - qp->r_nak_state = 0; - qp->r_head_ack_queue = next; - - /* Schedule the send tasklet. */ - ipath_schedule_send(qp); - - goto unlock; - } - - default: - /* NAK unknown opcodes. */ - goto nack_inv; - } - qp->r_psn++; - qp->r_state = opcode; - qp->r_ack_psn = psn; - qp->r_nak_state = 0; - /* Send an ACK if requested or required. */ - if (psn & (1 << 31)) - goto send_ack; - goto done; - -rnr_nak: - qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; - qp->r_ack_psn = qp->r_psn; - goto send_ack; - -nack_inv_unlck: - spin_unlock_irqrestore(&qp->s_lock, flags); -nack_inv: - ipath_rc_error(qp, IB_WC_LOC_QP_OP_ERR); - qp->r_nak_state = IB_NAK_INVALID_REQUEST; - qp->r_ack_psn = qp->r_psn; - goto send_ack; - -nack_acc_unlck: - spin_unlock_irqrestore(&qp->s_lock, flags); -nack_acc: - ipath_rc_error(qp, IB_WC_LOC_PROT_ERR); - qp->r_nak_state = IB_NAK_REMOTE_ACCESS_ERROR; - qp->r_ack_psn = qp->r_psn; -send_ack: - send_rc_ack(qp); - goto done; - -unlock: - spin_unlock_irqrestore(&qp->s_lock, flags); -done: - return; -} diff --git a/drivers/staging/rdma/ipath/ipath_registers.h b/drivers/staging/rdma/ipath/ipath_registers.h deleted file mode 100644 index 8f44d0cf3833..000000000000 --- a/drivers/staging/rdma/ipath/ipath_registers.h +++ /dev/null @@ -1,512 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _IPATH_REGISTERS_H -#define _IPATH_REGISTERS_H - -/* - * This file should only be included by kernel source, and by the diags. It - * defines the registers, and their contents, for InfiniPath chips. - */ - -/* - * These are the InfiniPath register and buffer bit definitions, - * that are visible to software, and needed only by the kernel - * and diag code. A few, that are visible to protocol and user - * code are in ipath_common.h. Some bits are specific - * to a given chip implementation, and have been moved to the - * chip-specific source file - */ - -/* kr_revision bits */ -#define INFINIPATH_R_CHIPREVMINOR_MASK 0xFF -#define INFINIPATH_R_CHIPREVMINOR_SHIFT 0 -#define INFINIPATH_R_CHIPREVMAJOR_MASK 0xFF -#define INFINIPATH_R_CHIPREVMAJOR_SHIFT 8 -#define INFINIPATH_R_ARCH_MASK 0xFF -#define INFINIPATH_R_ARCH_SHIFT 16 -#define INFINIPATH_R_SOFTWARE_MASK 0xFF -#define INFINIPATH_R_SOFTWARE_SHIFT 24 -#define INFINIPATH_R_BOARDID_MASK 0xFF -#define INFINIPATH_R_BOARDID_SHIFT 32 - -/* kr_control bits */ -#define INFINIPATH_C_FREEZEMODE 0x00000002 -#define INFINIPATH_C_LINKENABLE 0x00000004 - -/* kr_sendctrl bits */ -#define INFINIPATH_S_DISARMPIOBUF_SHIFT 16 -#define INFINIPATH_S_UPDTHRESH_SHIFT 24 -#define INFINIPATH_S_UPDTHRESH_MASK 0x1f - -#define IPATH_S_ABORT 0 -#define IPATH_S_PIOINTBUFAVAIL 1 -#define IPATH_S_PIOBUFAVAILUPD 2 -#define IPATH_S_PIOENABLE 3 -#define IPATH_S_SDMAINTENABLE 9 -#define IPATH_S_SDMASINGLEDESCRIPTOR 10 -#define IPATH_S_SDMAENABLE 11 -#define IPATH_S_SDMAHALT 12 -#define IPATH_S_DISARM 31 - -#define INFINIPATH_S_ABORT (1U << IPATH_S_ABORT) -#define INFINIPATH_S_PIOINTBUFAVAIL (1U << IPATH_S_PIOINTBUFAVAIL) -#define INFINIPATH_S_PIOBUFAVAILUPD (1U << IPATH_S_PIOBUFAVAILUPD) -#define INFINIPATH_S_PIOENABLE (1U << IPATH_S_PIOENABLE) -#define INFINIPATH_S_SDMAINTENABLE (1U << IPATH_S_SDMAINTENABLE) -#define INFINIPATH_S_SDMASINGLEDESCRIPTOR \ - (1U << IPATH_S_SDMASINGLEDESCRIPTOR) -#define INFINIPATH_S_SDMAENABLE (1U << IPATH_S_SDMAENABLE) -#define INFINIPATH_S_SDMAHALT (1U << IPATH_S_SDMAHALT) -#define INFINIPATH_S_DISARM (1U << IPATH_S_DISARM) - -/* kr_rcvctrl bits that are the same on multiple chips */ -#define INFINIPATH_R_PORTENABLE_SHIFT 0 -#define INFINIPATH_R_QPMAP_ENABLE (1ULL << 38) - -/* kr_intstatus, kr_intclear, kr_intmask bits */ -#define INFINIPATH_I_SDMAINT 0x8000000000000000ULL -#define INFINIPATH_I_SDMADISABLED 0x4000000000000000ULL -#define INFINIPATH_I_ERROR 0x0000000080000000ULL -#define INFINIPATH_I_SPIOSENT 0x0000000040000000ULL -#define INFINIPATH_I_SPIOBUFAVAIL 0x0000000020000000ULL -#define INFINIPATH_I_GPIO 0x0000000010000000ULL -#define INFINIPATH_I_JINT 0x0000000004000000ULL - -/* kr_errorstatus, kr_errorclear, kr_errormask bits */ -#define INFINIPATH_E_RFORMATERR 0x0000000000000001ULL -#define INFINIPATH_E_RVCRC 0x0000000000000002ULL -#define INFINIPATH_E_RICRC 0x0000000000000004ULL -#define INFINIPATH_E_RMINPKTLEN 0x0000000000000008ULL -#define INFINIPATH_E_RMAXPKTLEN 0x0000000000000010ULL -#define INFINIPATH_E_RLONGPKTLEN 0x0000000000000020ULL -#define INFINIPATH_E_RSHORTPKTLEN 0x0000000000000040ULL -#define INFINIPATH_E_RUNEXPCHAR 0x0000000000000080ULL -#define INFINIPATH_E_RUNSUPVL 0x0000000000000100ULL -#define INFINIPATH_E_REBP 0x0000000000000200ULL -#define INFINIPATH_E_RIBFLOW 0x0000000000000400ULL -#define INFINIPATH_E_RBADVERSION 0x0000000000000800ULL -#define INFINIPATH_E_RRCVEGRFULL 0x0000000000001000ULL -#define INFINIPATH_E_RRCVHDRFULL 0x0000000000002000ULL -#define INFINIPATH_E_RBADTID 0x0000000000004000ULL -#define INFINIPATH_E_RHDRLEN 0x0000000000008000ULL -#define INFINIPATH_E_RHDR 0x0000000000010000ULL -#define INFINIPATH_E_RIBLOSTLINK 0x0000000000020000ULL -#define INFINIPATH_E_SENDSPECIALTRIGGER 0x0000000008000000ULL -#define INFINIPATH_E_SDMADISABLED 0x0000000010000000ULL -#define INFINIPATH_E_SMINPKTLEN 0x0000000020000000ULL -#define INFINIPATH_E_SMAXPKTLEN 0x0000000040000000ULL -#define INFINIPATH_E_SUNDERRUN 0x0000000080000000ULL -#define INFINIPATH_E_SPKTLEN 0x0000000100000000ULL -#define INFINIPATH_E_SDROPPEDSMPPKT 0x0000000200000000ULL -#define INFINIPATH_E_SDROPPEDDATAPKT 0x0000000400000000ULL -#define INFINIPATH_E_SPIOARMLAUNCH 0x0000000800000000ULL -#define INFINIPATH_E_SUNEXPERRPKTNUM 0x0000001000000000ULL -#define INFINIPATH_E_SUNSUPVL 0x0000002000000000ULL -#define INFINIPATH_E_SENDBUFMISUSE 0x0000004000000000ULL -#define INFINIPATH_E_SDMAGENMISMATCH 0x0000008000000000ULL -#define INFINIPATH_E_SDMAOUTOFBOUND 0x0000010000000000ULL -#define INFINIPATH_E_SDMATAILOUTOFBOUND 0x0000020000000000ULL -#define INFINIPATH_E_SDMABASE 0x0000040000000000ULL -#define INFINIPATH_E_SDMA1STDESC 0x0000080000000000ULL -#define INFINIPATH_E_SDMARPYTAG 0x0000100000000000ULL -#define INFINIPATH_E_SDMADWEN 0x0000200000000000ULL -#define INFINIPATH_E_SDMAMISSINGDW 0x0000400000000000ULL -#define INFINIPATH_E_SDMAUNEXPDATA 0x0000800000000000ULL -#define INFINIPATH_E_IBSTATUSCHANGED 0x0001000000000000ULL -#define INFINIPATH_E_INVALIDADDR 0x0002000000000000ULL -#define INFINIPATH_E_RESET 0x0004000000000000ULL -#define INFINIPATH_E_HARDWARE 0x0008000000000000ULL -#define INFINIPATH_E_SDMADESCADDRMISALIGN 0x0010000000000000ULL -#define INFINIPATH_E_INVALIDEEPCMD 0x0020000000000000ULL - -/* - * this is used to print "common" packet errors only when the - * __IPATH_ERRPKTDBG bit is set in ipath_debug. - */ -#define INFINIPATH_E_PKTERRS ( INFINIPATH_E_SPKTLEN \ - | INFINIPATH_E_SDROPPEDDATAPKT | INFINIPATH_E_RVCRC \ - | INFINIPATH_E_RICRC | INFINIPATH_E_RSHORTPKTLEN \ - | INFINIPATH_E_REBP ) - -/* Convenience for decoding Send DMA errors */ -#define INFINIPATH_E_SDMAERRS ( \ - INFINIPATH_E_SDMAGENMISMATCH | INFINIPATH_E_SDMAOUTOFBOUND | \ - INFINIPATH_E_SDMATAILOUTOFBOUND | INFINIPATH_E_SDMABASE | \ - INFINIPATH_E_SDMA1STDESC | INFINIPATH_E_SDMARPYTAG | \ - INFINIPATH_E_SDMADWEN | INFINIPATH_E_SDMAMISSINGDW | \ - INFINIPATH_E_SDMAUNEXPDATA | \ - INFINIPATH_E_SDMADESCADDRMISALIGN | \ - INFINIPATH_E_SDMADISABLED | \ - INFINIPATH_E_SENDBUFMISUSE) - -/* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */ -/* TXEMEMPARITYERR bit 0: PIObuf, 1: PIOpbc, 2: launchfifo - * RXEMEMPARITYERR bit 0: rcvbuf, 1: lookupq, 2: expTID, 3: eagerTID - * bit 4: flag buffer, 5: datainfo, 6: header info */ -#define INFINIPATH_HWE_TXEMEMPARITYERR_MASK 0xFULL -#define INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT 40 -#define INFINIPATH_HWE_RXEMEMPARITYERR_MASK 0x7FULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT 44 -#define INFINIPATH_HWE_IBCBUSTOSPCPARITYERR 0x4000000000000000ULL -#define INFINIPATH_HWE_IBCBUSFRSPCPARITYERR 0x8000000000000000ULL -/* txe mem parity errors (shift by INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) */ -#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF 0x1ULL -#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC 0x2ULL -#define INFINIPATH_HWE_TXEMEMPARITYERR_PIOLAUNCHFIFO 0x4ULL -/* rxe mem parity errors (shift by INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) */ -#define INFINIPATH_HWE_RXEMEMPARITYERR_RCVBUF 0x01ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_LOOKUPQ 0x02ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_EXPTID 0x04ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID 0x08ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_FLAGBUF 0x10ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_DATAINFO 0x20ULL -#define INFINIPATH_HWE_RXEMEMPARITYERR_HDRINFO 0x40ULL -/* waldo specific -- find the rest in ipath_6110.c */ -#define INFINIPATH_HWE_RXDSYNCMEMPARITYERR 0x0000000400000000ULL -/* 6120/7220 specific -- find the rest in ipath_6120.c and ipath_7220.c */ -#define INFINIPATH_HWE_MEMBISTFAILED 0x0040000000000000ULL - -/* kr_hwdiagctrl bits */ -#define INFINIPATH_DC_FORCETXEMEMPARITYERR_MASK 0xFULL -#define INFINIPATH_DC_FORCETXEMEMPARITYERR_SHIFT 40 -#define INFINIPATH_DC_FORCERXEMEMPARITYERR_MASK 0x7FULL -#define INFINIPATH_DC_FORCERXEMEMPARITYERR_SHIFT 44 -#define INFINIPATH_DC_FORCERXDSYNCMEMPARITYERR 0x0000000400000000ULL -#define INFINIPATH_DC_COUNTERDISABLE 0x1000000000000000ULL -#define INFINIPATH_DC_COUNTERWREN 0x2000000000000000ULL -#define INFINIPATH_DC_FORCEIBCBUSTOSPCPARITYERR 0x4000000000000000ULL -#define INFINIPATH_DC_FORCEIBCBUSFRSPCPARITYERR 0x8000000000000000ULL - -/* kr_ibcctrl bits */ -#define INFINIPATH_IBCC_FLOWCTRLPERIOD_MASK 0xFFULL -#define INFINIPATH_IBCC_FLOWCTRLPERIOD_SHIFT 0 -#define INFINIPATH_IBCC_FLOWCTRLWATERMARK_MASK 0xFFULL -#define INFINIPATH_IBCC_FLOWCTRLWATERMARK_SHIFT 8 -#define INFINIPATH_IBCC_LINKINITCMD_MASK 0x3ULL -#define INFINIPATH_IBCC_LINKINITCMD_DISABLE 1 -/* cycle through TS1/TS2 till OK */ -#define INFINIPATH_IBCC_LINKINITCMD_POLL 2 -/* wait for TS1, then go on */ -#define INFINIPATH_IBCC_LINKINITCMD_SLEEP 3 -#define INFINIPATH_IBCC_LINKINITCMD_SHIFT 16 -#define INFINIPATH_IBCC_LINKCMD_MASK 0x3ULL -#define INFINIPATH_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */ -#define INFINIPATH_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */ -#define INFINIPATH_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */ -#define INFINIPATH_IBCC_LINKCMD_SHIFT 18 -#define INFINIPATH_IBCC_MAXPKTLEN_MASK 0x7FFULL -#define INFINIPATH_IBCC_MAXPKTLEN_SHIFT 20 -#define INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK 0xFULL -#define INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT 32 -#define INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK 0xFULL -#define INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT 36 -#define INFINIPATH_IBCC_CREDITSCALE_MASK 0x7ULL -#define INFINIPATH_IBCC_CREDITSCALE_SHIFT 40 -#define INFINIPATH_IBCC_LOOPBACK 0x8000000000000000ULL -#define INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE 0x4000000000000000ULL - -/* kr_ibcstatus bits */ -#define INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT 0 -#define INFINIPATH_IBCS_LINKSTATE_MASK 0x7 - -#define INFINIPATH_IBCS_TXREADY 0x40000000 -#define INFINIPATH_IBCS_TXCREDITOK 0x80000000 -/* link training states (shift by - INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) */ -#define INFINIPATH_IBCS_LT_STATE_DISABLED 0x00 -#define INFINIPATH_IBCS_LT_STATE_LINKUP 0x01 -#define INFINIPATH_IBCS_LT_STATE_POLLACTIVE 0x02 -#define INFINIPATH_IBCS_LT_STATE_POLLQUIET 0x03 -#define INFINIPATH_IBCS_LT_STATE_SLEEPDELAY 0x04 -#define INFINIPATH_IBCS_LT_STATE_SLEEPQUIET 0x05 -#define INFINIPATH_IBCS_LT_STATE_CFGDEBOUNCE 0x08 -#define INFINIPATH_IBCS_LT_STATE_CFGRCVFCFG 0x09 -#define INFINIPATH_IBCS_LT_STATE_CFGWAITRMT 0x0a -#define INFINIPATH_IBCS_LT_STATE_CFGIDLE 0x0b -#define INFINIPATH_IBCS_LT_STATE_RECOVERRETRAIN 0x0c -#define INFINIPATH_IBCS_LT_STATE_RECOVERWAITRMT 0x0e -#define INFINIPATH_IBCS_LT_STATE_RECOVERIDLE 0x0f -/* link state machine states (shift by ibcs_ls_shift) */ -#define INFINIPATH_IBCS_L_STATE_DOWN 0x0 -#define INFINIPATH_IBCS_L_STATE_INIT 0x1 -#define INFINIPATH_IBCS_L_STATE_ARM 0x2 -#define INFINIPATH_IBCS_L_STATE_ACTIVE 0x3 -#define INFINIPATH_IBCS_L_STATE_ACT_DEFER 0x4 - - -/* kr_extstatus bits */ -#define INFINIPATH_EXTS_SERDESPLLLOCK 0x1 -#define INFINIPATH_EXTS_GPIOIN_MASK 0xFFFFULL -#define INFINIPATH_EXTS_GPIOIN_SHIFT 48 - -/* kr_extctrl bits */ -#define INFINIPATH_EXTC_GPIOINVERT_MASK 0xFFFFULL -#define INFINIPATH_EXTC_GPIOINVERT_SHIFT 32 -#define INFINIPATH_EXTC_GPIOOE_MASK 0xFFFFULL -#define INFINIPATH_EXTC_GPIOOE_SHIFT 48 -#define INFINIPATH_EXTC_SERDESENABLE 0x80000000ULL -#define INFINIPATH_EXTC_SERDESCONNECT 0x40000000ULL -#define INFINIPATH_EXTC_SERDESENTRUNKING 0x20000000ULL -#define INFINIPATH_EXTC_SERDESDISRXFIFO 0x10000000ULL -#define INFINIPATH_EXTC_SERDESENPLPBK1 0x08000000ULL -#define INFINIPATH_EXTC_SERDESENPLPBK2 0x04000000ULL -#define INFINIPATH_EXTC_SERDESENENCDEC 0x02000000ULL -#define INFINIPATH_EXTC_LED1SECPORT_ON 0x00000020ULL -#define INFINIPATH_EXTC_LED2SECPORT_ON 0x00000010ULL -#define INFINIPATH_EXTC_LED1PRIPORT_ON 0x00000008ULL -#define INFINIPATH_EXTC_LED2PRIPORT_ON 0x00000004ULL -#define INFINIPATH_EXTC_LEDGBLOK_ON 0x00000002ULL -#define INFINIPATH_EXTC_LEDGBLERR_OFF 0x00000001ULL - -/* kr_partitionkey bits */ -#define INFINIPATH_PKEY_SIZE 16 -#define INFINIPATH_PKEY_MASK 0xFFFF -#define INFINIPATH_PKEY_DEFAULT_PKEY 0xFFFF - -/* kr_serdesconfig0 bits */ -#define INFINIPATH_SERDC0_RESET_MASK 0xfULL /* overal reset bits */ -#define INFINIPATH_SERDC0_RESET_PLL 0x10000000ULL /* pll reset */ -/* tx idle enables (per lane) */ -#define INFINIPATH_SERDC0_TXIDLE 0xF000ULL -/* rx detect enables (per lane) */ -#define INFINIPATH_SERDC0_RXDETECT_EN 0xF0000ULL -/* L1 Power down; use with RXDETECT, Otherwise not used on IB side */ -#define INFINIPATH_SERDC0_L1PWR_DN 0xF0ULL - -/* common kr_xgxsconfig bits (or safe in all, even if not implemented) */ -#define INFINIPATH_XGXS_RX_POL_SHIFT 19 -#define INFINIPATH_XGXS_RX_POL_MASK 0xfULL - - -/* - * IPATH_PIO_MAXIBHDR is the max IB header size allowed for in our - * PIO send buffers. This is well beyond anything currently - * defined in the InfiniBand spec. - */ -#define IPATH_PIO_MAXIBHDR 128 - -typedef u64 ipath_err_t; - -/* The following change with the type of device, so - * need to be part of the ipath_devdata struct, or - * we could have problems plugging in devices of - * different types (e.g. one HT, one PCIE) - * in one system, to be managed by one driver. - * On the other hand, this file is may also be included - * by other code, so leave the declarations here - * temporarily. Minor footprint issue if common-model - * linker used, none if C89+ linker used. - */ - -/* mask of defined bits for various registers */ -extern u64 infinipath_i_bitsextant; -extern ipath_err_t infinipath_e_bitsextant, infinipath_hwe_bitsextant; - -/* masks that are different in various chips, or only exist in some chips */ -extern u32 infinipath_i_rcvavail_mask, infinipath_i_rcvurg_mask; - -/* - * These are the infinipath general register numbers (not offsets). - * The kernel registers are used directly, those beyond the kernel - * registers are calculated from one of the base registers. The use of - * an integer type doesn't allow type-checking as thorough as, say, - * an enum but allows for better hiding of chip differences. - */ -typedef const u16 ipath_kreg, /* infinipath general registers */ - ipath_creg, /* infinipath counter registers */ - ipath_sreg; /* kernel-only, infinipath send registers */ - -/* - * These are the chip registers common to all infinipath chips, and - * used both by the kernel and the diagnostics or other user code. - * They are all implemented such that 64 bit accesses work. - * Some implement no more than 32 bits. Because 64 bit reads - * require 2 HT cmds on opteron, we access those with 32 bit - * reads for efficiency (they are written as 64 bits, since - * the extra 32 bits are nearly free on writes, and it slightly reduces - * complexity). The rest are all accessed as 64 bits. - */ -struct ipath_kregs { - /* These are the 32 bit group */ - ipath_kreg kr_control; - ipath_kreg kr_counterregbase; - ipath_kreg kr_intmask; - ipath_kreg kr_intstatus; - ipath_kreg kr_pagealign; - ipath_kreg kr_portcnt; - ipath_kreg kr_rcvtidbase; - ipath_kreg kr_rcvtidcnt; - ipath_kreg kr_rcvegrbase; - ipath_kreg kr_rcvegrcnt; - ipath_kreg kr_scratch; - ipath_kreg kr_sendctrl; - ipath_kreg kr_sendpiobufbase; - ipath_kreg kr_sendpiobufcnt; - ipath_kreg kr_sendpiosize; - ipath_kreg kr_sendregbase; - ipath_kreg kr_userregbase; - /* These are the 64 bit group */ - ipath_kreg kr_debugport; - ipath_kreg kr_debugportselect; - ipath_kreg kr_errorclear; - ipath_kreg kr_errormask; - ipath_kreg kr_errorstatus; - ipath_kreg kr_extctrl; - ipath_kreg kr_extstatus; - ipath_kreg kr_gpio_clear; - ipath_kreg kr_gpio_mask; - ipath_kreg kr_gpio_out; - ipath_kreg kr_gpio_status; - ipath_kreg kr_hwdiagctrl; - ipath_kreg kr_hwerrclear; - ipath_kreg kr_hwerrmask; - ipath_kreg kr_hwerrstatus; - ipath_kreg kr_ibcctrl; - ipath_kreg kr_ibcstatus; - ipath_kreg kr_intblocked; - ipath_kreg kr_intclear; - ipath_kreg kr_interruptconfig; - ipath_kreg kr_mdio; - ipath_kreg kr_partitionkey; - ipath_kreg kr_rcvbthqp; - ipath_kreg kr_rcvbufbase; - ipath_kreg kr_rcvbufsize; - ipath_kreg kr_rcvctrl; - ipath_kreg kr_rcvhdrcnt; - ipath_kreg kr_rcvhdrentsize; - ipath_kreg kr_rcvhdrsize; - ipath_kreg kr_rcvintmembase; - ipath_kreg kr_rcvintmemsize; - ipath_kreg kr_revision; - ipath_kreg kr_sendbuffererror; - ipath_kreg kr_sendpioavailaddr; - ipath_kreg kr_serdesconfig0; - ipath_kreg kr_serdesconfig1; - ipath_kreg kr_serdesstatus; - ipath_kreg kr_txintmembase; - ipath_kreg kr_txintmemsize; - ipath_kreg kr_xgxsconfig; - ipath_kreg kr_ibpllcfg; - /* use these two (and the following N ports) only with - * ipath_k*_kreg64_port(); not *kreg64() */ - ipath_kreg kr_rcvhdraddr; - ipath_kreg kr_rcvhdrtailaddr; - - /* remaining registers are not present on all types of infinipath - chips */ - ipath_kreg kr_rcvpktledcnt; - ipath_kreg kr_pcierbuftestreg0; - ipath_kreg kr_pcierbuftestreg1; - ipath_kreg kr_pcieq0serdesconfig0; - ipath_kreg kr_pcieq0serdesconfig1; - ipath_kreg kr_pcieq0serdesstatus; - ipath_kreg kr_pcieq1serdesconfig0; - ipath_kreg kr_pcieq1serdesconfig1; - ipath_kreg kr_pcieq1serdesstatus; - ipath_kreg kr_hrtbt_guid; - ipath_kreg kr_ibcddrctrl; - ipath_kreg kr_ibcddrstatus; - ipath_kreg kr_jintreload; - - /* send dma related regs */ - ipath_kreg kr_senddmabase; - ipath_kreg kr_senddmalengen; - ipath_kreg kr_senddmatail; - ipath_kreg kr_senddmahead; - ipath_kreg kr_senddmaheadaddr; - ipath_kreg kr_senddmabufmask0; - ipath_kreg kr_senddmabufmask1; - ipath_kreg kr_senddmabufmask2; - ipath_kreg kr_senddmastatus; - - /* SerDes related regs (IBA7220-only) */ - ipath_kreg kr_ibserdesctrl; - ipath_kreg kr_ib_epbacc; - ipath_kreg kr_ib_epbtrans; - ipath_kreg kr_pcie_epbacc; - ipath_kreg kr_pcie_epbtrans; - ipath_kreg kr_ib_ddsrxeq; -}; - -struct ipath_cregs { - ipath_creg cr_badformatcnt; - ipath_creg cr_erricrccnt; - ipath_creg cr_errlinkcnt; - ipath_creg cr_errlpcrccnt; - ipath_creg cr_errpkey; - ipath_creg cr_errrcvflowctrlcnt; - ipath_creg cr_err_rlencnt; - ipath_creg cr_errslencnt; - ipath_creg cr_errtidfull; - ipath_creg cr_errtidvalid; - ipath_creg cr_errvcrccnt; - ipath_creg cr_ibstatuschange; - ipath_creg cr_intcnt; - ipath_creg cr_invalidrlencnt; - ipath_creg cr_invalidslencnt; - ipath_creg cr_lbflowstallcnt; - ipath_creg cr_iblinkdowncnt; - ipath_creg cr_iblinkerrrecovcnt; - ipath_creg cr_ibsymbolerrcnt; - ipath_creg cr_pktrcvcnt; - ipath_creg cr_pktrcvflowctrlcnt; - ipath_creg cr_pktsendcnt; - ipath_creg cr_pktsendflowcnt; - ipath_creg cr_portovflcnt; - ipath_creg cr_rcvebpcnt; - ipath_creg cr_rcvovflcnt; - ipath_creg cr_rxdroppktcnt; - ipath_creg cr_senddropped; - ipath_creg cr_sendstallcnt; - ipath_creg cr_sendunderruncnt; - ipath_creg cr_unsupvlcnt; - ipath_creg cr_wordrcvcnt; - ipath_creg cr_wordsendcnt; - ipath_creg cr_vl15droppedpktcnt; - ipath_creg cr_rxotherlocalphyerrcnt; - ipath_creg cr_excessbufferovflcnt; - ipath_creg cr_locallinkintegrityerrcnt; - ipath_creg cr_rxvlerrcnt; - ipath_creg cr_rxdlidfltrcnt; - ipath_creg cr_psstat; - ipath_creg cr_psstart; - ipath_creg cr_psinterval; - ipath_creg cr_psrcvdatacount; - ipath_creg cr_psrcvpktscount; - ipath_creg cr_psxmitdatacount; - ipath_creg cr_psxmitpktscount; - ipath_creg cr_psxmitwaitcount; -}; - -#endif /* _IPATH_REGISTERS_H */ diff --git a/drivers/staging/rdma/ipath/ipath_ruc.c b/drivers/staging/rdma/ipath/ipath_ruc.c deleted file mode 100644 index e541a01f1f61..000000000000 --- a/drivers/staging/rdma/ipath/ipath_ruc.c +++ /dev/null @@ -1,733 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -/* - * Convert the AETH RNR timeout code into the number of milliseconds. - */ -const u32 ib_ipath_rnr_table[32] = { - 656, /* 0 */ - 1, /* 1 */ - 1, /* 2 */ - 1, /* 3 */ - 1, /* 4 */ - 1, /* 5 */ - 1, /* 6 */ - 1, /* 7 */ - 1, /* 8 */ - 1, /* 9 */ - 1, /* A */ - 1, /* B */ - 1, /* C */ - 1, /* D */ - 2, /* E */ - 2, /* F */ - 3, /* 10 */ - 4, /* 11 */ - 6, /* 12 */ - 8, /* 13 */ - 11, /* 14 */ - 16, /* 15 */ - 21, /* 16 */ - 31, /* 17 */ - 41, /* 18 */ - 62, /* 19 */ - 82, /* 1A */ - 123, /* 1B */ - 164, /* 1C */ - 246, /* 1D */ - 328, /* 1E */ - 492 /* 1F */ -}; - -/** - * ipath_insert_rnr_queue - put QP on the RNR timeout list for the device - * @qp: the QP - * - * Called with the QP s_lock held and interrupts disabled. - * XXX Use a simple list for now. We might need a priority - * queue if we have lots of QPs waiting for RNR timeouts - * but that should be rare. - */ -void ipath_insert_rnr_queue(struct ipath_qp *qp) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - - /* We already did a spin_lock_irqsave(), so just use spin_lock */ - spin_lock(&dev->pending_lock); - if (list_empty(&dev->rnrwait)) - list_add(&qp->timerwait, &dev->rnrwait); - else { - struct list_head *l = &dev->rnrwait; - struct ipath_qp *nqp = list_entry(l->next, struct ipath_qp, - timerwait); - - while (qp->s_rnr_timeout >= nqp->s_rnr_timeout) { - qp->s_rnr_timeout -= nqp->s_rnr_timeout; - l = l->next; - if (l->next == &dev->rnrwait) { - nqp = NULL; - break; - } - nqp = list_entry(l->next, struct ipath_qp, - timerwait); - } - if (nqp) - nqp->s_rnr_timeout -= qp->s_rnr_timeout; - list_add(&qp->timerwait, l); - } - spin_unlock(&dev->pending_lock); -} - -/** - * ipath_init_sge - Validate a RWQE and fill in the SGE state - * @qp: the QP - * - * Return 1 if OK. - */ -int ipath_init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe, - u32 *lengthp, struct ipath_sge_state *ss) -{ - int i, j, ret; - struct ib_wc wc; - - *lengthp = 0; - for (i = j = 0; i < wqe->num_sge; i++) { - if (wqe->sg_list[i].length == 0) - continue; - /* Check LKEY */ - if (!ipath_lkey_ok(qp, j ? &ss->sg_list[j - 1] : &ss->sge, - &wqe->sg_list[i], IB_ACCESS_LOCAL_WRITE)) - goto bad_lkey; - *lengthp += wqe->sg_list[i].length; - j++; - } - ss->num_sge = j; - ret = 1; - goto bail; - -bad_lkey: - memset(&wc, 0, sizeof(wc)); - wc.wr_id = wqe->wr_id; - wc.status = IB_WC_LOC_PROT_ERR; - wc.opcode = IB_WC_RECV; - wc.qp = &qp->ibqp; - /* Signal solicited completion event. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); - ret = 0; -bail: - return ret; -} - -/** - * ipath_get_rwqe - copy the next RWQE into the QP's RWQE - * @qp: the QP - * @wr_id_only: update qp->r_wr_id only, not qp->r_sge - * - * Return 0 if no RWQE is available, otherwise return 1. - * - * Can be called from interrupt level. - */ -int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) -{ - unsigned long flags; - struct ipath_rq *rq; - struct ipath_rwq *wq; - struct ipath_srq *srq; - struct ipath_rwqe *wqe; - void (*handler)(struct ib_event *, void *); - u32 tail; - int ret; - - if (qp->ibqp.srq) { - srq = to_isrq(qp->ibqp.srq); - handler = srq->ibsrq.event_handler; - rq = &srq->rq; - } else { - srq = NULL; - handler = NULL; - rq = &qp->r_rq; - } - - spin_lock_irqsave(&rq->lock, flags); - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { - ret = 0; - goto unlock; - } - - wq = rq->wq; - tail = wq->tail; - /* Validate tail before using it since it is user writable. */ - if (tail >= rq->size) - tail = 0; - do { - if (unlikely(tail == wq->head)) { - ret = 0; - goto unlock; - } - /* Make sure entry is read after head index is read. */ - smp_rmb(); - wqe = get_rwqe_ptr(rq, tail); - if (++tail >= rq->size) - tail = 0; - if (wr_id_only) - break; - qp->r_sge.sg_list = qp->r_sg_list; - } while (!ipath_init_sge(qp, wqe, &qp->r_len, &qp->r_sge)); - qp->r_wr_id = wqe->wr_id; - wq->tail = tail; - - ret = 1; - set_bit(IPATH_R_WRID_VALID, &qp->r_aflags); - if (handler) { - u32 n; - - /* - * validate head pointer value and compute - * the number of remaining WQEs. - */ - n = wq->head; - if (n >= rq->size) - n = 0; - if (n < tail) - n += rq->size - tail; - else - n -= tail; - if (n < srq->limit) { - struct ib_event ev; - - srq->limit = 0; - spin_unlock_irqrestore(&rq->lock, flags); - ev.device = qp->ibqp.device; - ev.element.srq = qp->ibqp.srq; - ev.event = IB_EVENT_SRQ_LIMIT_REACHED; - handler(&ev, srq->ibsrq.srq_context); - goto bail; - } - } -unlock: - spin_unlock_irqrestore(&rq->lock, flags); -bail: - return ret; -} - -/** - * ipath_ruc_loopback - handle UC and RC lookback requests - * @sqp: the sending QP - * - * This is called from ipath_do_send() to - * forward a WQE addressed to the same HCA. - * Note that although we are single threaded due to the tasklet, we still - * have to protect against post_send(). We don't have to worry about - * receive interrupts since this is a connected protocol and all packets - * will pass through here. - */ -static void ipath_ruc_loopback(struct ipath_qp *sqp) -{ - struct ipath_ibdev *dev = to_idev(sqp->ibqp.device); - struct ipath_qp *qp; - struct ipath_swqe *wqe; - struct ipath_sge *sge; - unsigned long flags; - struct ib_wc wc; - u64 sdata; - atomic64_t *maddr; - enum ib_wc_status send_status; - - /* - * Note that we check the responder QP state after - * checking the requester's state. - */ - qp = ipath_lookup_qpn(&dev->qp_table, sqp->remote_qpn); - - spin_lock_irqsave(&sqp->s_lock, flags); - - /* Return if we are already busy processing a work request. */ - if ((sqp->s_flags & (IPATH_S_BUSY | IPATH_S_ANY_WAIT)) || - !(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) - goto unlock; - - sqp->s_flags |= IPATH_S_BUSY; - -again: - if (sqp->s_last == sqp->s_head) - goto clr_busy; - wqe = get_swqe_ptr(sqp, sqp->s_last); - - /* Return if it is not OK to start a new work reqeust. */ - if (!(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_NEXT_SEND_OK)) { - if (!(ib_ipath_state_ops[sqp->state] & IPATH_FLUSH_SEND)) - goto clr_busy; - /* We are in the error state, flush the work request. */ - send_status = IB_WC_WR_FLUSH_ERR; - goto flush_send; - } - - /* - * We can rely on the entry not changing without the s_lock - * being held until we update s_last. - * We increment s_cur to indicate s_last is in progress. - */ - if (sqp->s_last == sqp->s_cur) { - if (++sqp->s_cur >= sqp->s_size) - sqp->s_cur = 0; - } - spin_unlock_irqrestore(&sqp->s_lock, flags); - - if (!qp || !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { - dev->n_pkt_drops++; - /* - * For RC, the requester would timeout and retry so - * shortcut the timeouts and just signal too many retries. - */ - if (sqp->ibqp.qp_type == IB_QPT_RC) - send_status = IB_WC_RETRY_EXC_ERR; - else - send_status = IB_WC_SUCCESS; - goto serr; - } - - memset(&wc, 0, sizeof wc); - send_status = IB_WC_SUCCESS; - - sqp->s_sge.sge = wqe->sg_list[0]; - sqp->s_sge.sg_list = wqe->sg_list + 1; - sqp->s_sge.num_sge = wqe->wr.num_sge; - sqp->s_len = wqe->length; - switch (wqe->wr.opcode) { - case IB_WR_SEND_WITH_IMM: - wc.wc_flags = IB_WC_WITH_IMM; - wc.ex.imm_data = wqe->wr.ex.imm_data; - /* FALLTHROUGH */ - case IB_WR_SEND: - if (!ipath_get_rwqe(qp, 0)) - goto rnr_nak; - break; - - case IB_WR_RDMA_WRITE_WITH_IMM: - if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE))) - goto inv_err; - wc.wc_flags = IB_WC_WITH_IMM; - wc.ex.imm_data = wqe->wr.ex.imm_data; - if (!ipath_get_rwqe(qp, 1)) - goto rnr_nak; - /* FALLTHROUGH */ - case IB_WR_RDMA_WRITE: - if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE))) - goto inv_err; - if (wqe->length == 0) - break; - if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, wqe->length, - wqe->rdma_wr.remote_addr, - wqe->rdma_wr.rkey, - IB_ACCESS_REMOTE_WRITE))) - goto acc_err; - break; - - case IB_WR_RDMA_READ: - if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ))) - goto inv_err; - if (unlikely(!ipath_rkey_ok(qp, &sqp->s_sge, wqe->length, - wqe->rdma_wr.remote_addr, - wqe->rdma_wr.rkey, - IB_ACCESS_REMOTE_READ))) - goto acc_err; - qp->r_sge.sge = wqe->sg_list[0]; - qp->r_sge.sg_list = wqe->sg_list + 1; - qp->r_sge.num_sge = wqe->wr.num_sge; - break; - - case IB_WR_ATOMIC_CMP_AND_SWP: - case IB_WR_ATOMIC_FETCH_AND_ADD: - if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC))) - goto inv_err; - if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64), - wqe->atomic_wr.remote_addr, - wqe->atomic_wr.rkey, - IB_ACCESS_REMOTE_ATOMIC))) - goto acc_err; - /* Perform atomic OP and save result. */ - maddr = (atomic64_t *) qp->r_sge.sge.vaddr; - sdata = wqe->atomic_wr.compare_add; - *(u64 *) sqp->s_sge.sge.vaddr = - (wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ? - (u64) atomic64_add_return(sdata, maddr) - sdata : - (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, - sdata, wqe->atomic_wr.swap); - goto send_comp; - - default: - send_status = IB_WC_LOC_QP_OP_ERR; - goto serr; - } - - sge = &sqp->s_sge.sge; - while (sqp->s_len) { - u32 len = sqp->s_len; - - if (len > sge->length) - len = sge->length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - ipath_copy_sge(&qp->r_sge, sge->vaddr, len); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--sqp->s_sge.num_sge) - *sge = *sqp->s_sge.sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - sqp->s_len -= len; - } - - if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) - goto send_comp; - - if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM) - wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; - else - wc.opcode = IB_WC_RECV; - wc.wr_id = qp->r_wr_id; - wc.status = IB_WC_SUCCESS; - wc.byte_len = wqe->length; - wc.qp = &qp->ibqp; - wc.src_qp = qp->remote_qpn; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - wc.port_num = 1; - /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, - wqe->wr.send_flags & IB_SEND_SOLICITED); - -send_comp: - spin_lock_irqsave(&sqp->s_lock, flags); -flush_send: - sqp->s_rnr_retry = sqp->s_rnr_retry_cnt; - ipath_send_complete(sqp, wqe, send_status); - goto again; - -rnr_nak: - /* Handle RNR NAK */ - if (qp->ibqp.qp_type == IB_QPT_UC) - goto send_comp; - /* - * Note: we don't need the s_lock held since the BUSY flag - * makes this single threaded. - */ - if (sqp->s_rnr_retry == 0) { - send_status = IB_WC_RNR_RETRY_EXC_ERR; - goto serr; - } - if (sqp->s_rnr_retry_cnt < 7) - sqp->s_rnr_retry--; - spin_lock_irqsave(&sqp->s_lock, flags); - if (!(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_RECV_OK)) - goto clr_busy; - sqp->s_flags |= IPATH_S_WAITING; - dev->n_rnr_naks++; - sqp->s_rnr_timeout = ib_ipath_rnr_table[qp->r_min_rnr_timer]; - ipath_insert_rnr_queue(sqp); - goto clr_busy; - -inv_err: - send_status = IB_WC_REM_INV_REQ_ERR; - wc.status = IB_WC_LOC_QP_OP_ERR; - goto err; - -acc_err: - send_status = IB_WC_REM_ACCESS_ERR; - wc.status = IB_WC_LOC_PROT_ERR; -err: - /* responder goes to error state */ - ipath_rc_error(qp, wc.status); - -serr: - spin_lock_irqsave(&sqp->s_lock, flags); - ipath_send_complete(sqp, wqe, send_status); - if (sqp->ibqp.qp_type == IB_QPT_RC) { - int lastwqe = ipath_error_qp(sqp, IB_WC_WR_FLUSH_ERR); - - sqp->s_flags &= ~IPATH_S_BUSY; - spin_unlock_irqrestore(&sqp->s_lock, flags); - if (lastwqe) { - struct ib_event ev; - - ev.device = sqp->ibqp.device; - ev.element.qp = &sqp->ibqp; - ev.event = IB_EVENT_QP_LAST_WQE_REACHED; - sqp->ibqp.event_handler(&ev, sqp->ibqp.qp_context); - } - goto done; - } -clr_busy: - sqp->s_flags &= ~IPATH_S_BUSY; -unlock: - spin_unlock_irqrestore(&sqp->s_lock, flags); -done: - if (qp && atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); -} - -static void want_buffer(struct ipath_devdata *dd, struct ipath_qp *qp) -{ - if (!(dd->ipath_flags & IPATH_HAS_SEND_DMA) || - qp->ibqp.qp_type == IB_QPT_SMI) { - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl |= INFINIPATH_S_PIOINTBUFAVAIL; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - } -} - -/** - * ipath_no_bufs_available - tell the layer driver we need buffers - * @qp: the QP that caused the problem - * @dev: the device we ran out of buffers on - * - * Called when we run out of PIO buffers. - * If we are now in the error state, return zero to flush the - * send work request. - */ -static int ipath_no_bufs_available(struct ipath_qp *qp, - struct ipath_ibdev *dev) -{ - unsigned long flags; - int ret = 1; - - /* - * Note that as soon as want_buffer() is called and - * possibly before it returns, ipath_ib_piobufavail() - * could be called. Therefore, put QP on the piowait list before - * enabling the PIO avail interrupt. - */ - spin_lock_irqsave(&qp->s_lock, flags); - if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) { - dev->n_piowait++; - qp->s_flags |= IPATH_S_WAITING; - qp->s_flags &= ~IPATH_S_BUSY; - spin_lock(&dev->pending_lock); - if (list_empty(&qp->piowait)) - list_add_tail(&qp->piowait, &dev->piowait); - spin_unlock(&dev->pending_lock); - } else - ret = 0; - spin_unlock_irqrestore(&qp->s_lock, flags); - if (ret) - want_buffer(dev->dd, qp); - return ret; -} - -/** - * ipath_make_grh - construct a GRH header - * @dev: a pointer to the ipath device - * @hdr: a pointer to the GRH header being constructed - * @grh: the global route address to send to - * @hwords: the number of 32 bit words of header being sent - * @nwords: the number of 32 bit words of data being sent - * - * Return the size of the header in 32 bit words. - */ -u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr, - struct ib_global_route *grh, u32 hwords, u32 nwords) -{ - hdr->version_tclass_flow = - cpu_to_be32((6 << 28) | - (grh->traffic_class << 20) | - grh->flow_label); - hdr->paylen = cpu_to_be16((hwords - 2 + nwords + SIZE_OF_CRC) << 2); - /* next_hdr is defined by C8-7 in ch. 8.4.1 */ - hdr->next_hdr = 0x1B; - hdr->hop_limit = grh->hop_limit; - /* The SGID is 32-bit aligned. */ - hdr->sgid.global.subnet_prefix = dev->gid_prefix; - hdr->sgid.global.interface_id = dev->dd->ipath_guid; - hdr->dgid = grh->dgid; - - /* GRH header size in 32-bit words. */ - return sizeof(struct ib_grh) / sizeof(u32); -} - -void ipath_make_ruc_header(struct ipath_ibdev *dev, struct ipath_qp *qp, - struct ipath_other_headers *ohdr, - u32 bth0, u32 bth2) -{ - u16 lrh0; - u32 nwords; - u32 extra_bytes; - - /* Construct the header. */ - extra_bytes = -qp->s_cur_size & 3; - nwords = (qp->s_cur_size + extra_bytes) >> 2; - lrh0 = IPATH_LRH_BTH; - if (unlikely(qp->remote_ah_attr.ah_flags & IB_AH_GRH)) { - qp->s_hdrwords += ipath_make_grh(dev, &qp->s_hdr.u.l.grh, - &qp->remote_ah_attr.grh, - qp->s_hdrwords, nwords); - lrh0 = IPATH_LRH_GRH; - } - lrh0 |= qp->remote_ah_attr.sl << 4; - qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); - qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid); - qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + nwords + SIZE_OF_CRC); - qp->s_hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid | - qp->remote_ah_attr.src_path_bits); - bth0 |= ipath_get_pkey(dev->dd, qp->s_pkey_index); - bth0 |= extra_bytes << 20; - ohdr->bth[0] = cpu_to_be32(bth0 | (1 << 22)); - ohdr->bth[1] = cpu_to_be32(qp->remote_qpn); - ohdr->bth[2] = cpu_to_be32(bth2); -} - -/** - * ipath_do_send - perform a send on a QP - * @data: contains a pointer to the QP - * - * Process entries in the send work queue until credit or queue is - * exhausted. Only allow one CPU to send a packet per QP (tasklet). - * Otherwise, two threads could send packets out of order. - */ -void ipath_do_send(unsigned long data) -{ - struct ipath_qp *qp = (struct ipath_qp *)data; - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - int (*make_req)(struct ipath_qp *qp); - unsigned long flags; - - if ((qp->ibqp.qp_type == IB_QPT_RC || - qp->ibqp.qp_type == IB_QPT_UC) && - qp->remote_ah_attr.dlid == dev->dd->ipath_lid) { - ipath_ruc_loopback(qp); - goto bail; - } - - if (qp->ibqp.qp_type == IB_QPT_RC) - make_req = ipath_make_rc_req; - else if (qp->ibqp.qp_type == IB_QPT_UC) - make_req = ipath_make_uc_req; - else - make_req = ipath_make_ud_req; - - spin_lock_irqsave(&qp->s_lock, flags); - - /* Return if we are already busy processing a work request. */ - if ((qp->s_flags & (IPATH_S_BUSY | IPATH_S_ANY_WAIT)) || - !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) { - spin_unlock_irqrestore(&qp->s_lock, flags); - goto bail; - } - - qp->s_flags |= IPATH_S_BUSY; - - spin_unlock_irqrestore(&qp->s_lock, flags); - -again: - /* Check for a constructed packet to be sent. */ - if (qp->s_hdrwords != 0) { - /* - * If no PIO bufs are available, return. An interrupt will - * call ipath_ib_piobufavail() when one is available. - */ - if (ipath_verbs_send(qp, &qp->s_hdr, qp->s_hdrwords, - qp->s_cur_sge, qp->s_cur_size)) { - if (ipath_no_bufs_available(qp, dev)) - goto bail; - } - dev->n_unicast_xmit++; - /* Record that we sent the packet and s_hdr is empty. */ - qp->s_hdrwords = 0; - } - - if (make_req(qp)) - goto again; - -bail:; -} - -/* - * This should be called with s_lock held. - */ -void ipath_send_complete(struct ipath_qp *qp, struct ipath_swqe *wqe, - enum ib_wc_status status) -{ - u32 old_last, last; - - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) - return; - - /* See ch. 11.2.4.1 and 10.7.3.1 */ - if (!(qp->s_flags & IPATH_S_SIGNAL_REQ_WR) || - (wqe->wr.send_flags & IB_SEND_SIGNALED) || - status != IB_WC_SUCCESS) { - struct ib_wc wc; - - memset(&wc, 0, sizeof wc); - wc.wr_id = wqe->wr.wr_id; - wc.status = status; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.qp = &qp->ibqp; - if (status == IB_WC_SUCCESS) - wc.byte_len = wqe->length; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, - status != IB_WC_SUCCESS); - } - - old_last = last = qp->s_last; - if (++last >= qp->s_size) - last = 0; - qp->s_last = last; - if (qp->s_cur == old_last) - qp->s_cur = last; - if (qp->s_tail == old_last) - qp->s_tail = last; - if (qp->state == IB_QPS_SQD && last == qp->s_cur) - qp->s_draining = 0; -} diff --git a/drivers/staging/rdma/ipath/ipath_sdma.c b/drivers/staging/rdma/ipath/ipath_sdma.c deleted file mode 100644 index 1ffc06abf9da..000000000000 --- a/drivers/staging/rdma/ipath/ipath_sdma.c +++ /dev/null @@ -1,818 +0,0 @@ -/* - * Copyright (c) 2007, 2008 QLogic Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "ipath_kernel.h" -#include "ipath_verbs.h" -#include "ipath_common.h" - -#define SDMA_DESCQ_SZ PAGE_SIZE /* 256 entries per 4KB page */ - -static void vl15_watchdog_enq(struct ipath_devdata *dd) -{ - /* ipath_sdma_lock must already be held */ - if (atomic_inc_return(&dd->ipath_sdma_vl15_count) == 1) { - unsigned long interval = (HZ + 19) / 20; - dd->ipath_sdma_vl15_timer.expires = jiffies + interval; - add_timer(&dd->ipath_sdma_vl15_timer); - } -} - -static void vl15_watchdog_deq(struct ipath_devdata *dd) -{ - /* ipath_sdma_lock must already be held */ - if (atomic_dec_return(&dd->ipath_sdma_vl15_count) != 0) { - unsigned long interval = (HZ + 19) / 20; - mod_timer(&dd->ipath_sdma_vl15_timer, jiffies + interval); - } else { - del_timer(&dd->ipath_sdma_vl15_timer); - } -} - -static void vl15_watchdog_timeout(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *)opaque; - - if (atomic_read(&dd->ipath_sdma_vl15_count) != 0) { - ipath_dbg("vl15 watchdog timeout - clearing\n"); - ipath_cancel_sends(dd, 1); - ipath_hol_down(dd); - } else { - ipath_dbg("vl15 watchdog timeout - " - "condition already cleared\n"); - } -} - -static void unmap_desc(struct ipath_devdata *dd, unsigned head) -{ - __le64 *descqp = &dd->ipath_sdma_descq[head].qw[0]; - u64 desc[2]; - dma_addr_t addr; - size_t len; - - desc[0] = le64_to_cpu(descqp[0]); - desc[1] = le64_to_cpu(descqp[1]); - - addr = (desc[1] << 32) | (desc[0] >> 32); - len = (desc[0] >> 14) & (0x7ffULL << 2); - dma_unmap_single(&dd->pcidev->dev, addr, len, DMA_TO_DEVICE); -} - -/* - * ipath_sdma_lock should be locked before calling this. - */ -int ipath_sdma_make_progress(struct ipath_devdata *dd) -{ - struct list_head *lp = NULL; - struct ipath_sdma_txreq *txp = NULL; - u16 dmahead; - u16 start_idx = 0; - int progress = 0; - - if (!list_empty(&dd->ipath_sdma_activelist)) { - lp = dd->ipath_sdma_activelist.next; - txp = list_entry(lp, struct ipath_sdma_txreq, list); - start_idx = txp->start_idx; - } - - /* - * Read the SDMA head register in order to know that the - * interrupt clear has been written to the chip. - * Otherwise, we may not get an interrupt for the last - * descriptor in the queue. - */ - dmahead = (u16)ipath_read_kreg32(dd, dd->ipath_kregs->kr_senddmahead); - /* sanity check return value for error handling (chip reset, etc.) */ - if (dmahead >= dd->ipath_sdma_descq_cnt) - goto done; - - while (dd->ipath_sdma_descq_head != dmahead) { - if (txp && txp->flags & IPATH_SDMA_TXREQ_F_FREEDESC && - dd->ipath_sdma_descq_head == start_idx) { - unmap_desc(dd, dd->ipath_sdma_descq_head); - start_idx++; - if (start_idx == dd->ipath_sdma_descq_cnt) - start_idx = 0; - } - - /* increment free count and head */ - dd->ipath_sdma_descq_removed++; - if (++dd->ipath_sdma_descq_head == dd->ipath_sdma_descq_cnt) - dd->ipath_sdma_descq_head = 0; - - if (txp && txp->next_descq_idx == dd->ipath_sdma_descq_head) { - /* move to notify list */ - if (txp->flags & IPATH_SDMA_TXREQ_F_VL15) - vl15_watchdog_deq(dd); - list_move_tail(lp, &dd->ipath_sdma_notifylist); - if (!list_empty(&dd->ipath_sdma_activelist)) { - lp = dd->ipath_sdma_activelist.next; - txp = list_entry(lp, struct ipath_sdma_txreq, - list); - start_idx = txp->start_idx; - } else { - lp = NULL; - txp = NULL; - } - } - progress = 1; - } - - if (progress) - tasklet_hi_schedule(&dd->ipath_sdma_notify_task); - -done: - return progress; -} - -static void ipath_sdma_notify(struct ipath_devdata *dd, struct list_head *list) -{ - struct ipath_sdma_txreq *txp, *txp_next; - - list_for_each_entry_safe(txp, txp_next, list, list) { - list_del_init(&txp->list); - - if (txp->callback) - (*txp->callback)(txp->callback_cookie, - txp->callback_status); - } -} - -static void sdma_notify_taskbody(struct ipath_devdata *dd) -{ - unsigned long flags; - struct list_head list; - - INIT_LIST_HEAD(&list); - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - - list_splice_init(&dd->ipath_sdma_notifylist, &list); - - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - ipath_sdma_notify(dd, &list); - - /* - * The IB verbs layer needs to see the callback before getting - * the call to ipath_ib_piobufavail() because the callback - * handles releasing resources the next send will need. - * Otherwise, we could do these calls in - * ipath_sdma_make_progress(). - */ - ipath_ib_piobufavail(dd->verbs_dev); -} - -static void sdma_notify_task(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *)opaque; - - if (!test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - sdma_notify_taskbody(dd); -} - -static void dump_sdma_state(struct ipath_devdata *dd) -{ - unsigned long reg; - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmastatus); - ipath_cdbg(VERBOSE, "kr_senddmastatus: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_sendctrl); - ipath_cdbg(VERBOSE, "kr_sendctrl: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmabufmask0); - ipath_cdbg(VERBOSE, "kr_senddmabufmask0: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmabufmask1); - ipath_cdbg(VERBOSE, "kr_senddmabufmask1: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmabufmask2); - ipath_cdbg(VERBOSE, "kr_senddmabufmask2: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmatail); - ipath_cdbg(VERBOSE, "kr_senddmatail: 0x%016lx\n", reg); - - reg = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmahead); - ipath_cdbg(VERBOSE, "kr_senddmahead: 0x%016lx\n", reg); -} - -static void sdma_abort_task(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *) opaque; - u64 status; - unsigned long flags; - - if (test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - return; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - - status = dd->ipath_sdma_status & IPATH_SDMA_ABORT_MASK; - - /* nothing to do */ - if (status == IPATH_SDMA_ABORT_NONE) - goto unlock; - - /* ipath_sdma_abort() is done, waiting for interrupt */ - if (status == IPATH_SDMA_ABORT_DISARMED) { - if (time_before(jiffies, dd->ipath_sdma_abort_intr_timeout)) - goto resched_noprint; - /* give up, intr got lost somewhere */ - ipath_dbg("give up waiting for SDMADISABLED intr\n"); - __set_bit(IPATH_SDMA_DISABLED, &dd->ipath_sdma_status); - status = IPATH_SDMA_ABORT_ABORTED; - } - - /* everything is stopped, time to clean up and restart */ - if (status == IPATH_SDMA_ABORT_ABORTED) { - struct ipath_sdma_txreq *txp, *txpnext; - u64 hwstatus; - int notify = 0; - - hwstatus = ipath_read_kreg64(dd, - dd->ipath_kregs->kr_senddmastatus); - - if ((hwstatus & (IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG | - IPATH_SDMA_STATUS_ABORT_IN_PROG | - IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE)) || - !(hwstatus & IPATH_SDMA_STATUS_SCB_EMPTY)) { - if (dd->ipath_sdma_reset_wait > 0) { - /* not done shutting down sdma */ - --dd->ipath_sdma_reset_wait; - goto resched; - } - ipath_cdbg(VERBOSE, "gave up waiting for quiescent " - "status after SDMA reset, continuing\n"); - dump_sdma_state(dd); - } - - /* dequeue all "sent" requests */ - list_for_each_entry_safe(txp, txpnext, - &dd->ipath_sdma_activelist, list) { - txp->callback_status = IPATH_SDMA_TXREQ_S_ABORTED; - if (txp->flags & IPATH_SDMA_TXREQ_F_VL15) - vl15_watchdog_deq(dd); - list_move_tail(&txp->list, &dd->ipath_sdma_notifylist); - notify = 1; - } - if (notify) - tasklet_hi_schedule(&dd->ipath_sdma_notify_task); - - /* reset our notion of head and tail */ - dd->ipath_sdma_descq_tail = 0; - dd->ipath_sdma_descq_head = 0; - dd->ipath_sdma_head_dma[0] = 0; - dd->ipath_sdma_generation = 0; - dd->ipath_sdma_descq_removed = dd->ipath_sdma_descq_added; - - /* Reset SendDmaLenGen */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmalengen, - (u64) dd->ipath_sdma_descq_cnt | (1ULL << 18)); - - /* done with sdma state for a bit */ - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - /* - * Don't restart sdma here (with the exception - * below). Wait until link is up to ACTIVE. VL15 MADs - * used to bring the link up use PIO, and multiple link - * transitions otherwise cause the sdma engine to be - * stopped and started multiple times. - * The disable is done here, including the shadow, - * so the state is kept consistent. - * See ipath_restart_sdma() for the actual starting - * of sdma. - */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~INFINIPATH_S_SDMAENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* make sure I see next message */ - dd->ipath_sdma_abort_jiffies = 0; - - /* - * Not everything that takes SDMA offline is a link - * status change. If the link was up, restart SDMA. - */ - if (dd->ipath_flags & IPATH_LINKACTIVE) - ipath_restart_sdma(dd); - - goto done; - } - -resched: - /* - * for now, keep spinning - * JAG - this is bad to just have default be a loop without - * state change - */ - if (time_after(jiffies, dd->ipath_sdma_abort_jiffies)) { - ipath_dbg("looping with status 0x%08lx\n", - dd->ipath_sdma_status); - dd->ipath_sdma_abort_jiffies = jiffies + 5 * HZ; - } -resched_noprint: - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - if (!test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - tasklet_hi_schedule(&dd->ipath_sdma_abort_task); - return; - -unlock: - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); -done: - return; -} - -/* - * This is called from interrupt context. - */ -void ipath_sdma_intr(struct ipath_devdata *dd) -{ - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - - (void) ipath_sdma_make_progress(dd); - - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); -} - -static int alloc_sdma(struct ipath_devdata *dd) -{ - int ret = 0; - - /* Allocate memory for SendDMA descriptor FIFO */ - dd->ipath_sdma_descq = dma_alloc_coherent(&dd->pcidev->dev, - SDMA_DESCQ_SZ, &dd->ipath_sdma_descq_phys, GFP_KERNEL); - - if (!dd->ipath_sdma_descq) { - ipath_dev_err(dd, "failed to allocate SendDMA descriptor " - "FIFO memory\n"); - ret = -ENOMEM; - goto done; - } - - dd->ipath_sdma_descq_cnt = - SDMA_DESCQ_SZ / sizeof(struct ipath_sdma_desc); - - /* Allocate memory for DMA of head register to memory */ - dd->ipath_sdma_head_dma = dma_alloc_coherent(&dd->pcidev->dev, - PAGE_SIZE, &dd->ipath_sdma_head_phys, GFP_KERNEL); - if (!dd->ipath_sdma_head_dma) { - ipath_dev_err(dd, "failed to allocate SendDMA head memory\n"); - ret = -ENOMEM; - goto cleanup_descq; - } - dd->ipath_sdma_head_dma[0] = 0; - - setup_timer(&dd->ipath_sdma_vl15_timer, vl15_watchdog_timeout, - (unsigned long)dd); - - atomic_set(&dd->ipath_sdma_vl15_count, 0); - - goto done; - -cleanup_descq: - dma_free_coherent(&dd->pcidev->dev, SDMA_DESCQ_SZ, - (void *)dd->ipath_sdma_descq, dd->ipath_sdma_descq_phys); - dd->ipath_sdma_descq = NULL; - dd->ipath_sdma_descq_phys = 0; -done: - return ret; -} - -int setup_sdma(struct ipath_devdata *dd) -{ - int ret = 0; - unsigned i, n; - u64 tmp64; - u64 senddmabufmask[3] = { 0 }; - unsigned long flags; - - ret = alloc_sdma(dd); - if (ret) - goto done; - - if (!dd->ipath_sdma_descq) { - ipath_dev_err(dd, "SendDMA memory not allocated\n"); - goto done; - } - - /* - * Set initial status as if we had been up, then gone down. - * This lets initial start on transition to ACTIVE be the - * same as restart after link flap. - */ - dd->ipath_sdma_status = IPATH_SDMA_ABORT_ABORTED; - dd->ipath_sdma_abort_jiffies = 0; - dd->ipath_sdma_generation = 0; - dd->ipath_sdma_descq_tail = 0; - dd->ipath_sdma_descq_head = 0; - dd->ipath_sdma_descq_removed = 0; - dd->ipath_sdma_descq_added = 0; - - /* Set SendDmaBase */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabase, - dd->ipath_sdma_descq_phys); - /* Set SendDmaLenGen */ - tmp64 = dd->ipath_sdma_descq_cnt; - tmp64 |= 1<<18; /* enable generation checking */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmalengen, tmp64); - /* Set SendDmaTail */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmatail, - dd->ipath_sdma_descq_tail); - /* Set SendDmaHeadAddr */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmaheadaddr, - dd->ipath_sdma_head_phys); - - /* - * Reserve all the former "kernel" piobufs, using high number range - * so we get as many 4K buffers as possible - */ - n = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; - i = dd->ipath_lastport_piobuf + dd->ipath_pioreserved; - ipath_chg_pioavailkernel(dd, i, n - i , 0); - for (; i < n; ++i) { - unsigned word = i / 64; - unsigned bit = i & 63; - BUG_ON(word >= 3); - senddmabufmask[word] |= 1ULL << bit; - } - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask0, - senddmabufmask[0]); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask1, - senddmabufmask[1]); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask2, - senddmabufmask[2]); - - INIT_LIST_HEAD(&dd->ipath_sdma_activelist); - INIT_LIST_HEAD(&dd->ipath_sdma_notifylist); - - tasklet_init(&dd->ipath_sdma_notify_task, sdma_notify_task, - (unsigned long) dd); - tasklet_init(&dd->ipath_sdma_abort_task, sdma_abort_task, - (unsigned long) dd); - - /* - * No use to turn on SDMA here, as link is probably not ACTIVE - * Just mark it RUNNING and enable the interrupt, and let the - * ipath_restart_sdma() on link transition to ACTIVE actually - * enable it. - */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl |= INFINIPATH_S_SDMAINTENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - __set_bit(IPATH_SDMA_RUNNING, &dd->ipath_sdma_status); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - -done: - return ret; -} - -void teardown_sdma(struct ipath_devdata *dd) -{ - struct ipath_sdma_txreq *txp, *txpnext; - unsigned long flags; - dma_addr_t sdma_head_phys = 0; - dma_addr_t sdma_descq_phys = 0; - void *sdma_descq = NULL; - void *sdma_head_dma = NULL; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - __clear_bit(IPATH_SDMA_RUNNING, &dd->ipath_sdma_status); - __set_bit(IPATH_SDMA_ABORTING, &dd->ipath_sdma_status); - __set_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - tasklet_kill(&dd->ipath_sdma_abort_task); - tasklet_kill(&dd->ipath_sdma_notify_task); - - /* turn off sdma */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~INFINIPATH_S_SDMAENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - /* dequeue all "sent" requests */ - list_for_each_entry_safe(txp, txpnext, &dd->ipath_sdma_activelist, - list) { - txp->callback_status = IPATH_SDMA_TXREQ_S_SHUTDOWN; - if (txp->flags & IPATH_SDMA_TXREQ_F_VL15) - vl15_watchdog_deq(dd); - list_move_tail(&txp->list, &dd->ipath_sdma_notifylist); - } - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - sdma_notify_taskbody(dd); - - del_timer_sync(&dd->ipath_sdma_vl15_timer); - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - - dd->ipath_sdma_abort_jiffies = 0; - - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabase, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmalengen, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmatail, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmaheadaddr, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask0, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask1, 0); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask2, 0); - - if (dd->ipath_sdma_head_dma) { - sdma_head_dma = (void *) dd->ipath_sdma_head_dma; - sdma_head_phys = dd->ipath_sdma_head_phys; - dd->ipath_sdma_head_dma = NULL; - dd->ipath_sdma_head_phys = 0; - } - - if (dd->ipath_sdma_descq) { - sdma_descq = dd->ipath_sdma_descq; - sdma_descq_phys = dd->ipath_sdma_descq_phys; - dd->ipath_sdma_descq = NULL; - dd->ipath_sdma_descq_phys = 0; - } - - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - if (sdma_head_dma) - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - sdma_head_dma, sdma_head_phys); - - if (sdma_descq) - dma_free_coherent(&dd->pcidev->dev, SDMA_DESCQ_SZ, - sdma_descq, sdma_descq_phys); -} - -/* - * [Re]start SDMA, if we use it, and it's not already OK. - * This is called on transition to link ACTIVE, either the first or - * subsequent times. - */ -void ipath_restart_sdma(struct ipath_devdata *dd) -{ - unsigned long flags; - int needed = 1; - - if (!(dd->ipath_flags & IPATH_HAS_SEND_DMA)) - goto bail; - - /* - * First, make sure we should, which is to say, - * check that we are "RUNNING" (not in teardown) - * and not "SHUTDOWN" - */ - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - if (!test_bit(IPATH_SDMA_RUNNING, &dd->ipath_sdma_status) - || test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) - needed = 0; - else { - __clear_bit(IPATH_SDMA_DISABLED, &dd->ipath_sdma_status); - __clear_bit(IPATH_SDMA_DISARMED, &dd->ipath_sdma_status); - __clear_bit(IPATH_SDMA_ABORTING, &dd->ipath_sdma_status); - } - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - if (!needed) { - ipath_dbg("invalid attempt to restart SDMA, status 0x%08lx\n", - dd->ipath_sdma_status); - goto bail; - } - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - /* - * First clear, just to be safe. Enable is only done - * in chip on 0->1 transition - */ - dd->ipath_sendctrl &= ~INFINIPATH_S_SDMAENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - dd->ipath_sendctrl |= INFINIPATH_S_SDMAENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - - /* notify upper layers */ - ipath_ib_piobufavail(dd->verbs_dev); - -bail: - return; -} - -static inline void make_sdma_desc(struct ipath_devdata *dd, - u64 *sdmadesc, u64 addr, u64 dwlen, u64 dwoffset) -{ - WARN_ON(addr & 3); - /* SDmaPhyAddr[47:32] */ - sdmadesc[1] = addr >> 32; - /* SDmaPhyAddr[31:0] */ - sdmadesc[0] = (addr & 0xfffffffcULL) << 32; - /* SDmaGeneration[1:0] */ - sdmadesc[0] |= (dd->ipath_sdma_generation & 3ULL) << 30; - /* SDmaDwordCount[10:0] */ - sdmadesc[0] |= (dwlen & 0x7ffULL) << 16; - /* SDmaBufOffset[12:2] */ - sdmadesc[0] |= dwoffset & 0x7ffULL; -} - -/* - * This function queues one IB packet onto the send DMA queue per call. - * The caller is responsible for checking: - * 1) The number of send DMA descriptor entries is less than the size of - * the descriptor queue. - * 2) The IB SGE addresses and lengths are 32-bit aligned - * (except possibly the last SGE's length) - * 3) The SGE addresses are suitable for passing to dma_map_single(). - */ -int ipath_sdma_verbs_send(struct ipath_devdata *dd, - struct ipath_sge_state *ss, u32 dwords, - struct ipath_verbs_txreq *tx) -{ - - unsigned long flags; - struct ipath_sge *sge; - int ret = 0; - u16 tail; - __le64 *descqp; - u64 sdmadesc[2]; - u32 dwoffset; - dma_addr_t addr; - - if ((tx->map_len + (dwords<<2)) > dd->ipath_ibmaxlen) { - ipath_dbg("packet size %X > ibmax %X, fail\n", - tx->map_len + (dwords<<2), dd->ipath_ibmaxlen); - ret = -EMSGSIZE; - goto fail; - } - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - -retry: - if (unlikely(test_bit(IPATH_SDMA_ABORTING, &dd->ipath_sdma_status))) { - ret = -EBUSY; - goto unlock; - } - - if (tx->txreq.sg_count > ipath_sdma_descq_freecnt(dd)) { - if (ipath_sdma_make_progress(dd)) - goto retry; - ret = -ENOBUFS; - goto unlock; - } - - addr = dma_map_single(&dd->pcidev->dev, tx->txreq.map_addr, - tx->map_len, DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, addr)) - goto ioerr; - - dwoffset = tx->map_len >> 2; - make_sdma_desc(dd, sdmadesc, (u64) addr, dwoffset, 0); - - /* SDmaFirstDesc */ - sdmadesc[0] |= 1ULL << 12; - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_USELARGEBUF) - sdmadesc[0] |= 1ULL << 14; /* SDmaUseLargeBuf */ - - /* write to the descq */ - tail = dd->ipath_sdma_descq_tail; - descqp = &dd->ipath_sdma_descq[tail].qw[0]; - *descqp++ = cpu_to_le64(sdmadesc[0]); - *descqp++ = cpu_to_le64(sdmadesc[1]); - - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_FREEDESC) - tx->txreq.start_idx = tail; - - /* increment the tail */ - if (++tail == dd->ipath_sdma_descq_cnt) { - tail = 0; - descqp = &dd->ipath_sdma_descq[0].qw[0]; - ++dd->ipath_sdma_generation; - } - - sge = &ss->sge; - while (dwords) { - u32 dw; - u32 len; - - len = dwords << 2; - if (len > sge->length) - len = sge->length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - dw = (len + 3) >> 2; - addr = dma_map_single(&dd->pcidev->dev, sge->vaddr, dw << 2, - DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, addr)) - goto unmap; - make_sdma_desc(dd, sdmadesc, (u64) addr, dw, dwoffset); - /* SDmaUseLargeBuf has to be set in every descriptor */ - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_USELARGEBUF) - sdmadesc[0] |= 1ULL << 14; - /* write to the descq */ - *descqp++ = cpu_to_le64(sdmadesc[0]); - *descqp++ = cpu_to_le64(sdmadesc[1]); - - /* increment the tail */ - if (++tail == dd->ipath_sdma_descq_cnt) { - tail = 0; - descqp = &dd->ipath_sdma_descq[0].qw[0]; - ++dd->ipath_sdma_generation; - } - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - - dwoffset += dw; - dwords -= dw; - } - - if (!tail) - descqp = &dd->ipath_sdma_descq[dd->ipath_sdma_descq_cnt].qw[0]; - descqp -= 2; - /* SDmaLastDesc */ - descqp[0] |= cpu_to_le64(1ULL << 11); - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_INTREQ) { - /* SDmaIntReq */ - descqp[0] |= cpu_to_le64(1ULL << 15); - } - - /* Commit writes to memory and advance the tail on the chip */ - wmb(); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmatail, tail); - - tx->txreq.next_descq_idx = tail; - tx->txreq.callback_status = IPATH_SDMA_TXREQ_S_OK; - dd->ipath_sdma_descq_tail = tail; - dd->ipath_sdma_descq_added += tx->txreq.sg_count; - list_add_tail(&tx->txreq.list, &dd->ipath_sdma_activelist); - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_VL15) - vl15_watchdog_enq(dd); - goto unlock; - -unmap: - while (tail != dd->ipath_sdma_descq_tail) { - if (!tail) - tail = dd->ipath_sdma_descq_cnt - 1; - else - tail--; - unmap_desc(dd, tail); - } -ioerr: - ret = -EIO; -unlock: - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); -fail: - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_srq.c b/drivers/staging/rdma/ipath/ipath_srq.c deleted file mode 100644 index 26271984b717..000000000000 --- a/drivers/staging/rdma/ipath/ipath_srq.c +++ /dev/null @@ -1,380 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_verbs.h" - -/** - * ipath_post_srq_receive - post a receive on a shared receive queue - * @ibsrq: the SRQ to post the receive on - * @wr: the list of work requests to post - * @bad_wr: the first WR to cause a problem is put here - * - * This may be called from interrupt context. - */ -int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, - struct ib_recv_wr **bad_wr) -{ - struct ipath_srq *srq = to_isrq(ibsrq); - struct ipath_rwq *wq; - unsigned long flags; - int ret; - - for (; wr; wr = wr->next) { - struct ipath_rwqe *wqe; - u32 next; - int i; - - if ((unsigned) wr->num_sge > srq->rq.max_sge) { - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - - spin_lock_irqsave(&srq->rq.lock, flags); - wq = srq->rq.wq; - next = wq->head + 1; - if (next >= srq->rq.size) - next = 0; - if (next == wq->tail) { - spin_unlock_irqrestore(&srq->rq.lock, flags); - *bad_wr = wr; - ret = -ENOMEM; - goto bail; - } - - wqe = get_rwqe_ptr(&srq->rq, wq->head); - wqe->wr_id = wr->wr_id; - wqe->num_sge = wr->num_sge; - for (i = 0; i < wr->num_sge; i++) - wqe->sg_list[i] = wr->sg_list[i]; - /* Make sure queue entry is written before the head index. */ - smp_wmb(); - wq->head = next; - spin_unlock_irqrestore(&srq->rq.lock, flags); - } - ret = 0; - -bail: - return ret; -} - -/** - * ipath_create_srq - create a shared receive queue - * @ibpd: the protection domain of the SRQ to create - * @srq_init_attr: the attributes of the SRQ - * @udata: data from libipathverbs when creating a user SRQ - */ -struct ib_srq *ipath_create_srq(struct ib_pd *ibpd, - struct ib_srq_init_attr *srq_init_attr, - struct ib_udata *udata) -{ - struct ipath_ibdev *dev = to_idev(ibpd->device); - struct ipath_srq *srq; - u32 sz; - struct ib_srq *ret; - - if (srq_init_attr->srq_type != IB_SRQT_BASIC) { - ret = ERR_PTR(-ENOSYS); - goto done; - } - - if (srq_init_attr->attr.max_wr == 0) { - ret = ERR_PTR(-EINVAL); - goto done; - } - - if ((srq_init_attr->attr.max_sge > ib_ipath_max_srq_sges) || - (srq_init_attr->attr.max_wr > ib_ipath_max_srq_wrs)) { - ret = ERR_PTR(-EINVAL); - goto done; - } - - srq = kmalloc(sizeof(*srq), GFP_KERNEL); - if (!srq) { - ret = ERR_PTR(-ENOMEM); - goto done; - } - - /* - * Need to use vmalloc() if we want to support large #s of entries. - */ - srq->rq.size = srq_init_attr->attr.max_wr + 1; - srq->rq.max_sge = srq_init_attr->attr.max_sge; - sz = sizeof(struct ib_sge) * srq->rq.max_sge + - sizeof(struct ipath_rwqe); - srq->rq.wq = vmalloc_user(sizeof(struct ipath_rwq) + srq->rq.size * sz); - if (!srq->rq.wq) { - ret = ERR_PTR(-ENOMEM); - goto bail_srq; - } - - /* - * Return the address of the RWQ as the offset to mmap. - * See ipath_mmap() for details. - */ - if (udata && udata->outlen >= sizeof(__u64)) { - int err; - u32 s = sizeof(struct ipath_rwq) + srq->rq.size * sz; - - srq->ip = - ipath_create_mmap_info(dev, s, - ibpd->uobject->context, - srq->rq.wq); - if (!srq->ip) { - ret = ERR_PTR(-ENOMEM); - goto bail_wq; - } - - err = ib_copy_to_udata(udata, &srq->ip->offset, - sizeof(srq->ip->offset)); - if (err) { - ret = ERR_PTR(err); - goto bail_ip; - } - } else - srq->ip = NULL; - - /* - * ib_create_srq() will initialize srq->ibsrq. - */ - spin_lock_init(&srq->rq.lock); - srq->rq.wq->head = 0; - srq->rq.wq->tail = 0; - srq->limit = srq_init_attr->attr.srq_limit; - - spin_lock(&dev->n_srqs_lock); - if (dev->n_srqs_allocated == ib_ipath_max_srqs) { - spin_unlock(&dev->n_srqs_lock); - ret = ERR_PTR(-ENOMEM); - goto bail_ip; - } - - dev->n_srqs_allocated++; - spin_unlock(&dev->n_srqs_lock); - - if (srq->ip) { - spin_lock_irq(&dev->pending_lock); - list_add(&srq->ip->pending_mmaps, &dev->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - } - - ret = &srq->ibsrq; - goto done; - -bail_ip: - kfree(srq->ip); -bail_wq: - vfree(srq->rq.wq); -bail_srq: - kfree(srq); -done: - return ret; -} - -/** - * ipath_modify_srq - modify a shared receive queue - * @ibsrq: the SRQ to modify - * @attr: the new attributes of the SRQ - * @attr_mask: indicates which attributes to modify - * @udata: user data for ipathverbs.so - */ -int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask, - struct ib_udata *udata) -{ - struct ipath_srq *srq = to_isrq(ibsrq); - struct ipath_rwq *wq; - int ret = 0; - - if (attr_mask & IB_SRQ_MAX_WR) { - struct ipath_rwq *owq; - struct ipath_rwqe *p; - u32 sz, size, n, head, tail; - - /* Check that the requested sizes are below the limits. */ - if ((attr->max_wr > ib_ipath_max_srq_wrs) || - ((attr_mask & IB_SRQ_LIMIT) ? - attr->srq_limit : srq->limit) > attr->max_wr) { - ret = -EINVAL; - goto bail; - } - - sz = sizeof(struct ipath_rwqe) + - srq->rq.max_sge * sizeof(struct ib_sge); - size = attr->max_wr + 1; - wq = vmalloc_user(sizeof(struct ipath_rwq) + size * sz); - if (!wq) { - ret = -ENOMEM; - goto bail; - } - - /* Check that we can write the offset to mmap. */ - if (udata && udata->inlen >= sizeof(__u64)) { - __u64 offset_addr; - __u64 offset = 0; - - ret = ib_copy_from_udata(&offset_addr, udata, - sizeof(offset_addr)); - if (ret) - goto bail_free; - udata->outbuf = - (void __user *) (unsigned long) offset_addr; - ret = ib_copy_to_udata(udata, &offset, - sizeof(offset)); - if (ret) - goto bail_free; - } - - spin_lock_irq(&srq->rq.lock); - /* - * validate head pointer value and compute - * the number of remaining WQEs. - */ - owq = srq->rq.wq; - head = owq->head; - if (head >= srq->rq.size) - head = 0; - tail = owq->tail; - if (tail >= srq->rq.size) - tail = 0; - n = head; - if (n < tail) - n += srq->rq.size - tail; - else - n -= tail; - if (size <= n) { - ret = -EINVAL; - goto bail_unlock; - } - n = 0; - p = wq->wq; - while (tail != head) { - struct ipath_rwqe *wqe; - int i; - - wqe = get_rwqe_ptr(&srq->rq, tail); - p->wr_id = wqe->wr_id; - p->num_sge = wqe->num_sge; - for (i = 0; i < wqe->num_sge; i++) - p->sg_list[i] = wqe->sg_list[i]; - n++; - p = (struct ipath_rwqe *)((char *) p + sz); - if (++tail >= srq->rq.size) - tail = 0; - } - srq->rq.wq = wq; - srq->rq.size = size; - wq->head = n; - wq->tail = 0; - if (attr_mask & IB_SRQ_LIMIT) - srq->limit = attr->srq_limit; - spin_unlock_irq(&srq->rq.lock); - - vfree(owq); - - if (srq->ip) { - struct ipath_mmap_info *ip = srq->ip; - struct ipath_ibdev *dev = to_idev(srq->ibsrq.device); - u32 s = sizeof(struct ipath_rwq) + size * sz; - - ipath_update_mmap_info(dev, ip, s, wq); - - /* - * Return the offset to mmap. - * See ipath_mmap() for details. - */ - if (udata && udata->inlen >= sizeof(__u64)) { - ret = ib_copy_to_udata(udata, &ip->offset, - sizeof(ip->offset)); - if (ret) - goto bail; - } - - spin_lock_irq(&dev->pending_lock); - if (list_empty(&ip->pending_mmaps)) - list_add(&ip->pending_mmaps, - &dev->pending_mmaps); - spin_unlock_irq(&dev->pending_lock); - } - } else if (attr_mask & IB_SRQ_LIMIT) { - spin_lock_irq(&srq->rq.lock); - if (attr->srq_limit >= srq->rq.size) - ret = -EINVAL; - else - srq->limit = attr->srq_limit; - spin_unlock_irq(&srq->rq.lock); - } - goto bail; - -bail_unlock: - spin_unlock_irq(&srq->rq.lock); -bail_free: - vfree(wq); -bail: - return ret; -} - -int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) -{ - struct ipath_srq *srq = to_isrq(ibsrq); - - attr->max_wr = srq->rq.size - 1; - attr->max_sge = srq->rq.max_sge; - attr->srq_limit = srq->limit; - return 0; -} - -/** - * ipath_destroy_srq - destroy a shared receive queue - * @ibsrq: the SRQ to destroy - */ -int ipath_destroy_srq(struct ib_srq *ibsrq) -{ - struct ipath_srq *srq = to_isrq(ibsrq); - struct ipath_ibdev *dev = to_idev(ibsrq->device); - - spin_lock(&dev->n_srqs_lock); - dev->n_srqs_allocated--; - spin_unlock(&dev->n_srqs_lock); - if (srq->ip) - kref_put(&srq->ip->ref, ipath_release_mmap_info); - else - vfree(srq->rq.wq); - kfree(srq); - - return 0; -} diff --git a/drivers/staging/rdma/ipath/ipath_stats.c b/drivers/staging/rdma/ipath/ipath_stats.c deleted file mode 100644 index f63e143e3292..000000000000 --- a/drivers/staging/rdma/ipath/ipath_stats.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "ipath_kernel.h" - -struct infinipath_stats ipath_stats; - -/** - * ipath_snap_cntr - snapshot a chip counter - * @dd: the infinipath device - * @creg: the counter to snapshot - * - * called from add_timer and user counter read calls, to deal with - * counters that wrap in "human time". The words sent and received, and - * the packets sent and received are all that we worry about. For now, - * at least, we don't worry about error counters, because if they wrap - * that quickly, we probably don't care. We may eventually just make this - * handle all the counters. word counters can wrap in about 20 seconds - * of full bandwidth traffic, packet counters in a few hours. - */ - -u64 ipath_snap_cntr(struct ipath_devdata *dd, ipath_creg creg) -{ - u32 val, reg64 = 0; - u64 val64; - unsigned long t0, t1; - u64 ret; - - t0 = jiffies; - /* If fast increment counters are only 32 bits, snapshot them, - * and maintain them as 64bit values in the driver */ - if (!(dd->ipath_flags & IPATH_32BITCOUNTERS) && - (creg == dd->ipath_cregs->cr_wordsendcnt || - creg == dd->ipath_cregs->cr_wordrcvcnt || - creg == dd->ipath_cregs->cr_pktsendcnt || - creg == dd->ipath_cregs->cr_pktrcvcnt)) { - val64 = ipath_read_creg(dd, creg); - val = val64 == ~0ULL ? ~0U : 0; - reg64 = 1; - } else /* val64 just to keep gcc quiet... */ - val64 = val = ipath_read_creg32(dd, creg); - /* - * See if a second has passed. This is just a way to detect things - * that are quite broken. Normally this should take just a few - * cycles (the check is for long enough that we don't care if we get - * pre-empted.) An Opteron HT O read timeout is 4 seconds with - * normal NB values - */ - t1 = jiffies; - if (time_before(t0 + HZ, t1) && val == -1) { - ipath_dev_err(dd, "Error! Read counter 0x%x timed out\n", - creg); - ret = 0ULL; - goto bail; - } - if (reg64) { - ret = val64; - goto bail; - } - - if (creg == dd->ipath_cregs->cr_wordsendcnt) { - if (val != dd->ipath_lastsword) { - dd->ipath_sword += val - dd->ipath_lastsword; - dd->ipath_lastsword = val; - } - val64 = dd->ipath_sword; - } else if (creg == dd->ipath_cregs->cr_wordrcvcnt) { - if (val != dd->ipath_lastrword) { - dd->ipath_rword += val - dd->ipath_lastrword; - dd->ipath_lastrword = val; - } - val64 = dd->ipath_rword; - } else if (creg == dd->ipath_cregs->cr_pktsendcnt) { - if (val != dd->ipath_lastspkts) { - dd->ipath_spkts += val - dd->ipath_lastspkts; - dd->ipath_lastspkts = val; - } - val64 = dd->ipath_spkts; - } else if (creg == dd->ipath_cregs->cr_pktrcvcnt) { - if (val != dd->ipath_lastrpkts) { - dd->ipath_rpkts += val - dd->ipath_lastrpkts; - dd->ipath_lastrpkts = val; - } - val64 = dd->ipath_rpkts; - } else if (creg == dd->ipath_cregs->cr_ibsymbolerrcnt) { - if (dd->ibdeltainprog) - val64 -= val64 - dd->ibsymsnap; - val64 -= dd->ibsymdelta; - } else if (creg == dd->ipath_cregs->cr_iblinkerrrecovcnt) { - if (dd->ibdeltainprog) - val64 -= val64 - dd->iblnkerrsnap; - val64 -= dd->iblnkerrdelta; - } else - val64 = (u64) val; - - ret = val64; - -bail: - return ret; -} - -/** - * ipath_qcheck - print delta of egrfull/hdrqfull errors for kernel ports - * @dd: the infinipath device - * - * print the delta of egrfull/hdrqfull errors for kernel ports no more than - * every 5 seconds. User processes are printed at close, but kernel doesn't - * close, so... Separate routine so may call from other places someday, and - * so function name when printed by _IPATH_INFO is meaningfull - */ -static void ipath_qcheck(struct ipath_devdata *dd) -{ - static u64 last_tot_hdrqfull; - struct ipath_portdata *pd = dd->ipath_pd[0]; - size_t blen = 0; - char buf[128]; - u32 hdrqtail; - - *buf = 0; - if (pd->port_hdrqfull != dd->ipath_p0_hdrqfull) { - blen = snprintf(buf, sizeof buf, "port 0 hdrqfull %u", - pd->port_hdrqfull - - dd->ipath_p0_hdrqfull); - dd->ipath_p0_hdrqfull = pd->port_hdrqfull; - } - if (ipath_stats.sps_etidfull != dd->ipath_last_tidfull) { - blen += snprintf(buf + blen, sizeof buf - blen, - "%srcvegrfull %llu", - blen ? ", " : "", - (unsigned long long) - (ipath_stats.sps_etidfull - - dd->ipath_last_tidfull)); - dd->ipath_last_tidfull = ipath_stats.sps_etidfull; - } - - /* - * this is actually the number of hdrq full interrupts, not actual - * events, but at the moment that's mostly what I'm interested in. - * Actual count, etc. is in the counters, if needed. For production - * users this won't ordinarily be printed. - */ - - if ((ipath_debug & (__IPATH_PKTDBG | __IPATH_DBG)) && - ipath_stats.sps_hdrqfull != last_tot_hdrqfull) { - blen += snprintf(buf + blen, sizeof buf - blen, - "%shdrqfull %llu (all ports)", - blen ? ", " : "", - (unsigned long long) - (ipath_stats.sps_hdrqfull - - last_tot_hdrqfull)); - last_tot_hdrqfull = ipath_stats.sps_hdrqfull; - } - if (blen) - ipath_dbg("%s\n", buf); - - hdrqtail = ipath_get_hdrqtail(pd); - if (pd->port_head != hdrqtail) { - if (dd->ipath_lastport0rcv_cnt == - ipath_stats.sps_port0pkts) { - ipath_cdbg(PKT, "missing rcv interrupts? " - "port0 hd=%x tl=%x; port0pkts %llx; write" - " hd (w/intr)\n", - pd->port_head, hdrqtail, - (unsigned long long) - ipath_stats.sps_port0pkts); - ipath_write_ureg(dd, ur_rcvhdrhead, hdrqtail | - dd->ipath_rhdrhead_intr_off, pd->port_port); - } - dd->ipath_lastport0rcv_cnt = ipath_stats.sps_port0pkts; - } -} - -static void ipath_chk_errormask(struct ipath_devdata *dd) -{ - static u32 fixed; - u32 ctrl; - unsigned long errormask; - unsigned long hwerrs; - - if (!dd->ipath_errormask || !(dd->ipath_flags & IPATH_INITTED)) - return; - - errormask = ipath_read_kreg64(dd, dd->ipath_kregs->kr_errormask); - - if (errormask == dd->ipath_errormask) - return; - fixed++; - - hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus); - ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control); - - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); - - if ((hwerrs & dd->ipath_hwerrmask) || - (ctrl & INFINIPATH_C_FREEZEMODE)) { - /* force re-interrupt of pending events, just in case */ - ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear, 0ULL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, 0ULL); - ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, 0ULL); - dev_info(&dd->pcidev->dev, - "errormask fixed(%u) %lx -> %lx, ctrl %x hwerr %lx\n", - fixed, errormask, (unsigned long)dd->ipath_errormask, - ctrl, hwerrs); - } else - ipath_dbg("errormask fixed(%u) %lx -> %lx, no freeze\n", - fixed, errormask, - (unsigned long)dd->ipath_errormask); -} - - -/** - * ipath_get_faststats - get word counters from chip before they overflow - * @opaque - contains a pointer to the infinipath device ipath_devdata - * - * called from add_timer - */ -void ipath_get_faststats(unsigned long opaque) -{ - struct ipath_devdata *dd = (struct ipath_devdata *) opaque; - int i; - static unsigned cnt; - unsigned long flags; - u64 traffic_wds; - - /* - * don't access the chip while running diags, or memory diags can - * fail - */ - if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_INITTED) || - ipath_diag_inuse) - /* but re-arm the timer, for diags case; won't hurt other */ - goto done; - - /* - * We now try to maintain a "active timer", based on traffic - * exceeding a threshold, so we need to check the word-counts - * even if they are 64-bit. - */ - traffic_wds = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt) + - ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); - spin_lock_irqsave(&dd->ipath_eep_st_lock, flags); - traffic_wds -= dd->ipath_traffic_wds; - dd->ipath_traffic_wds += traffic_wds; - if (traffic_wds >= IPATH_TRAFFIC_ACTIVE_THRESHOLD) - atomic_add(5, &dd->ipath_active_time); /* S/B #define */ - spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags); - - if (dd->ipath_flags & IPATH_32BITCOUNTERS) { - ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); - ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); - } - - ipath_qcheck(dd); - - /* - * deal with repeat error suppression. Doesn't really matter if - * last error was almost a full interval ago, or just a few usecs - * ago; still won't get more than 2 per interval. We may want - * longer intervals for this eventually, could do with mod, counter - * or separate timer. Also see code in ipath_handle_errors() and - * ipath_handle_hwerrors(). - */ - - if (dd->ipath_lasterror) - dd->ipath_lasterror = 0; - if (dd->ipath_lasthwerror) - dd->ipath_lasthwerror = 0; - if (dd->ipath_maskederrs - && time_after(jiffies, dd->ipath_unmasktime)) { - char ebuf[256]; - int iserr; - iserr = ipath_decode_err(dd, ebuf, sizeof ebuf, - dd->ipath_maskederrs); - if (dd->ipath_maskederrs & - ~(INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL | - INFINIPATH_E_PKTERRS)) - ipath_dev_err(dd, "Re-enabling masked errors " - "(%s)\n", ebuf); - else { - /* - * rcvegrfull and rcvhdrqfull are "normal", for some - * types of processes (mostly benchmarks) that send - * huge numbers of messages, while not processing - * them. So only complain about these at debug - * level. - */ - if (iserr) - ipath_dbg( - "Re-enabling queue full errors (%s)\n", - ebuf); - else - ipath_cdbg(ERRPKT, "Re-enabling packet" - " problem interrupt (%s)\n", ebuf); - } - - /* re-enable masked errors */ - dd->ipath_errormask |= dd->ipath_maskederrs; - ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, - dd->ipath_errormask); - dd->ipath_maskederrs = 0; - } - - /* limit qfull messages to ~one per minute per port */ - if ((++cnt & 0x10)) { - for (i = (int) dd->ipath_cfgports; --i >= 0; ) { - struct ipath_portdata *pd = dd->ipath_pd[i]; - - if (pd && pd->port_lastrcvhdrqtail != -1) - pd->port_lastrcvhdrqtail = -1; - } - } - - ipath_chk_errormask(dd); -done: - mod_timer(&dd->ipath_stats_timer, jiffies + HZ * 5); -} diff --git a/drivers/staging/rdma/ipath/ipath_sysfs.c b/drivers/staging/rdma/ipath/ipath_sysfs.c deleted file mode 100644 index b12b1f6caf59..000000000000 --- a/drivers/staging/rdma/ipath/ipath_sysfs.c +++ /dev/null @@ -1,1237 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "ipath_kernel.h" -#include "ipath_verbs.h" -#include "ipath_common.h" - -/** - * ipath_parse_ushort - parse an unsigned short value in an arbitrary base - * @str: the string containing the number - * @valp: where to put the result - * - * returns the number of bytes consumed, or negative value on error - */ -int ipath_parse_ushort(const char *str, unsigned short *valp) -{ - unsigned long val; - char *end; - int ret; - - if (!isdigit(str[0])) { - ret = -EINVAL; - goto bail; - } - - val = simple_strtoul(str, &end, 0); - - if (val > 0xffff) { - ret = -EINVAL; - goto bail; - } - - *valp = val; - - ret = end + 1 - str; - if (ret == 0) - ret = -EINVAL; - -bail: - return ret; -} - -static ssize_t show_version(struct device_driver *dev, char *buf) -{ - /* The string printed here is already newline-terminated. */ - return scnprintf(buf, PAGE_SIZE, "%s", ib_ipath_version); -} - -static ssize_t show_num_units(struct device_driver *dev, char *buf) -{ - return scnprintf(buf, PAGE_SIZE, "%d\n", - ipath_count_units(NULL, NULL, NULL)); -} - -static ssize_t show_status(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - ssize_t ret; - - if (!dd->ipath_statusp) { - ret = -EINVAL; - goto bail; - } - - ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n", - (unsigned long long) *(dd->ipath_statusp)); - -bail: - return ret; -} - -static const char *ipath_status_str[] = { - "Initted", - "Disabled", - "Admin_Disabled", - "", /* This used to be the old "OIB_SMA" status. */ - "", /* This used to be the old "SMA" status. */ - "Present", - "IB_link_up", - "IB_configured", - "NoIBcable", - "Fatal_Hardware_Error", - NULL, -}; - -static ssize_t show_status_str(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int i, any; - u64 s; - ssize_t ret; - - if (!dd->ipath_statusp) { - ret = -EINVAL; - goto bail; - } - - s = *(dd->ipath_statusp); - *buf = '\0'; - for (any = i = 0; s && ipath_status_str[i]; i++) { - if (s & 1) { - if (any && strlcat(buf, " ", PAGE_SIZE) >= - PAGE_SIZE) - /* overflow */ - break; - if (strlcat(buf, ipath_status_str[i], - PAGE_SIZE) >= PAGE_SIZE) - break; - any = 1; - } - s >>= 1; - } - if (any) - strlcat(buf, "\n", PAGE_SIZE); - - ret = strlen(buf); - -bail: - return ret; -} - -static ssize_t show_boardversion(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - /* The string printed here is already newline-terminated. */ - return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion); -} - -static ssize_t show_localbus_info(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - /* The string printed here is already newline-terminated. */ - return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_lbus_info); -} - -static ssize_t show_lmc(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc); -} - -static ssize_t store_lmc(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 lmc = 0; - int ret; - - ret = ipath_parse_ushort(buf, &lmc); - if (ret < 0) - goto invalid; - - if (lmc > 7) { - ret = -EINVAL; - goto invalid; - } - - ipath_set_lid(dd, dd->ipath_lid, lmc); - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc); -bail: - return ret; -} - -static ssize_t show_lid(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid); -} - -static ssize_t store_lid(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 lid = 0; - int ret; - - ret = ipath_parse_ushort(buf, &lid); - if (ret < 0) - goto invalid; - - if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) { - ret = -EINVAL; - goto invalid; - } - - ipath_set_lid(dd, lid, dd->ipath_lmc); - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid); -bail: - return ret; -} - -static ssize_t show_mlid(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid); -} - -static ssize_t store_mlid(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 mlid; - int ret; - - ret = ipath_parse_ushort(buf, &mlid); - if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE) - goto invalid; - - dd->ipath_mlid = mlid; - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid MLID\n"); -bail: - return ret; -} - -static ssize_t show_guid(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u8 *guid; - - guid = (u8 *) & (dd->ipath_guid); - - return scnprintf(buf, PAGE_SIZE, - "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", - guid[0], guid[1], guid[2], guid[3], - guid[4], guid[5], guid[6], guid[7]); -} - -static ssize_t store_guid(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - ssize_t ret; - unsigned short guid[8]; - __be64 new_guid; - u8 *ng; - int i; - - if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", - &guid[0], &guid[1], &guid[2], &guid[3], - &guid[4], &guid[5], &guid[6], &guid[7]) != 8) - goto invalid; - - ng = (u8 *) &new_guid; - - for (i = 0; i < 8; i++) { - if (guid[i] > 0xff) - goto invalid; - ng[i] = guid[i]; - } - - if (new_guid == 0) - goto invalid; - - dd->ipath_guid = new_guid; - dd->ipath_nguid = 1; - if (dd->verbs_dev) - dd->verbs_dev->ibdev.node_guid = new_guid; - - ret = strlen(buf); - goto bail; - -invalid: - ipath_dev_err(dd, "attempt to set invalid GUID\n"); - ret = -EINVAL; - -bail: - return ret; -} - -static ssize_t show_nguid(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid); -} - -static ssize_t show_nports(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - /* Return the number of user ports available. */ - return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1); -} - -static ssize_t show_serial(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - buf[sizeof dd->ipath_serial] = '\0'; - memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial); - strcat(buf, "\n"); - return strlen(buf); -} - -static ssize_t show_unit(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit); -} - -static ssize_t show_jint_max_packets(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "%hu\n", dd->ipath_jint_max_packets); -} - -static ssize_t store_jint_max_packets(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 v = 0; - int ret; - - ret = ipath_parse_ushort(buf, &v); - if (ret < 0) - ipath_dev_err(dd, "invalid jint_max_packets.\n"); - else - dd->ipath_f_config_jint(dd, dd->ipath_jint_idle_ticks, v); - - return ret; -} - -static ssize_t show_jint_idle_ticks(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - - return scnprintf(buf, PAGE_SIZE, "%hu\n", dd->ipath_jint_idle_ticks); -} - -static ssize_t store_jint_idle_ticks(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - u16 v = 0; - int ret; - - ret = ipath_parse_ushort(buf, &v); - if (ret < 0) - ipath_dev_err(dd, "invalid jint_idle_ticks.\n"); - else - dd->ipath_f_config_jint(dd, v, dd->ipath_jint_max_packets); - - return ret; -} - -#define DEVICE_COUNTER(name, attr) \ - static ssize_t show_counter_##name(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ - { \ - struct ipath_devdata *dd = dev_get_drvdata(dev); \ - return scnprintf(\ - buf, PAGE_SIZE, "%llu\n", (unsigned long long) \ - ipath_snap_cntr( \ - dd, offsetof(struct infinipath_counters, \ - attr) / sizeof(u64))); \ - } \ - static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL); - -DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt); -DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt); -DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt); -DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt); -DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt); -DEVICE_COUNTER(lb_ints, LBIntCnt); -DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt); -DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt); -DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt); -DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt); -DEVICE_COUNTER(rx_dwords, RxDwordCnt); -DEVICE_COUNTER(rx_ebps, RxEBPCnt); -DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt); -DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt); -DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt); -DEVICE_COUNTER(rx_len_errs, RxLenErrCnt); -DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt); -DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt); -DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt); -DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt); -DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt); -DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt); -DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt); -DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt); -DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt); -DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt); -DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt); -DEVICE_COUNTER(tx_dwords, TxDwordCnt); -DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt); -DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt); -DEVICE_COUNTER(tx_len_errs, TxLenErrCnt); -DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt); -DEVICE_COUNTER(tx_underruns, TxUnderrunCnt); -DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt); - -static struct attribute *dev_counter_attributes[] = { - &dev_attr_ib_link_downeds.attr, - &dev_attr_ib_link_err_recoveries.attr, - &dev_attr_ib_status_changes.attr, - &dev_attr_ib_symbol_errs.attr, - &dev_attr_lb_flow_stalls.attr, - &dev_attr_lb_ints.attr, - &dev_attr_rx_bad_formats.attr, - &dev_attr_rx_buf_ovfls.attr, - &dev_attr_rx_data_pkts.attr, - &dev_attr_rx_dropped_pkts.attr, - &dev_attr_rx_dwords.attr, - &dev_attr_rx_ebps.attr, - &dev_attr_rx_flow_ctrl_errs.attr, - &dev_attr_rx_flow_pkts.attr, - &dev_attr_rx_icrc_errs.attr, - &dev_attr_rx_len_errs.attr, - &dev_attr_rx_link_problems.attr, - &dev_attr_rx_lpcrc_errs.attr, - &dev_attr_rx_max_min_len_errs.attr, - &dev_attr_rx_p0_hdr_egr_ovfls.attr, - &dev_attr_rx_p1_hdr_egr_ovfls.attr, - &dev_attr_rx_p2_hdr_egr_ovfls.attr, - &dev_attr_rx_p3_hdr_egr_ovfls.attr, - &dev_attr_rx_p4_hdr_egr_ovfls.attr, - &dev_attr_rx_p5_hdr_egr_ovfls.attr, - &dev_attr_rx_p6_hdr_egr_ovfls.attr, - &dev_attr_rx_p7_hdr_egr_ovfls.attr, - &dev_attr_rx_p8_hdr_egr_ovfls.attr, - &dev_attr_rx_pkey_mismatches.attr, - &dev_attr_rx_tid_full_errs.attr, - &dev_attr_rx_tid_valid_errs.attr, - &dev_attr_rx_vcrc_errs.attr, - &dev_attr_tx_data_pkts.attr, - &dev_attr_tx_dropped_pkts.attr, - &dev_attr_tx_dwords.attr, - &dev_attr_tx_flow_pkts.attr, - &dev_attr_tx_flow_stalls.attr, - &dev_attr_tx_len_errs.attr, - &dev_attr_tx_max_min_len_errs.attr, - &dev_attr_tx_underruns.attr, - &dev_attr_tx_unsup_vl_errs.attr, - NULL -}; - -static struct attribute_group dev_counter_attr_group = { - .name = "counters", - .attrs = dev_counter_attributes -}; - -static ssize_t store_reset(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - if (count < 5 || memcmp(buf, "reset", 5)) { - ret = -EINVAL; - goto bail; - } - - if (dd->ipath_flags & IPATH_DISABLED) { - /* - * post-reset init would re-enable interrupts, etc. - * so don't allow reset on disabled devices. Not - * perfect error, but about the best choice. - */ - dev_info(dev,"Unit %d is disabled, can't reset\n", - dd->ipath_unit); - ret = -EINVAL; - goto bail; - } - ret = ipath_reset_device(dd->ipath_unit); -bail: - return ret<0 ? ret : count; -} - -static ssize_t store_link_state(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 state; - - ret = ipath_parse_ushort(buf, &state); - if (ret < 0) - goto invalid; - - r = ipath_set_linkstate(dd, state); - if (r < 0) { - ret = r; - goto bail; - } - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid link state\n"); -bail: - return ret; -} - -static ssize_t show_mtu(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu); -} - -static ssize_t store_mtu(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - ssize_t ret; - u16 mtu = 0; - int r; - - ret = ipath_parse_ushort(buf, &mtu); - if (ret < 0) - goto invalid; - - r = ipath_set_mtu(dd, mtu); - if (r < 0) - ret = r; - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid MTU\n"); -bail: - return ret; -} - -static ssize_t show_enabled(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%u\n", - (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1); -} - -static ssize_t store_enabled(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - ssize_t ret; - u16 enable = 0; - - ret = ipath_parse_ushort(buf, &enable); - if (ret < 0) { - ipath_dev_err(dd, "attempt to use non-numeric on enable\n"); - goto bail; - } - - if (enable) { - if (!(dd->ipath_flags & IPATH_DISABLED)) - goto bail; - - dev_info(dev, "Enabling unit %d\n", dd->ipath_unit); - /* same as post-reset */ - ret = ipath_init_chip(dd, 1); - if (ret) - ipath_dev_err(dd, "Failed to enable unit %d\n", - dd->ipath_unit); - else { - dd->ipath_flags &= ~IPATH_DISABLED; - *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED; - } - } else if (!(dd->ipath_flags & IPATH_DISABLED)) { - dev_info(dev, "Disabling unit %d\n", dd->ipath_unit); - ipath_shutdown_device(dd); - dd->ipath_flags |= IPATH_DISABLED; - *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED; - } - -bail: - return ret; -} - -static ssize_t store_rx_pol_inv(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret < 0) - goto invalid; - - r = ipath_set_rx_pol_inv(dd, val); - if (r < 0) { - ret = r; - goto bail; - } - - goto bail; -invalid: - ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n"); -bail: - return ret; -} - -static ssize_t store_led_override(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret > 0) - ipath_set_led_override(dd, val); - else - ipath_dev_err(dd, "attempt to set invalid LED override\n"); - return ret; -} - -static ssize_t show_logged_errs(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int idx, count; - - /* force consistency with actual EEPROM */ - if (ipath_update_eeprom_log(dd) != 0) - return -ENXIO; - - count = 0; - for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) { - count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c", - dd->ipath_eep_st_errs[idx], - idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' '); - } - - return count; -} - -/* - * New sysfs entries to control various IB config. These all turn into - * accesses via ipath_f_get/set_ib_cfg. - * - * Get/Set heartbeat enable. Or of 1=enabled, 2=auto - */ -static ssize_t show_hrtbt_enb(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_HRTBT); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -static ssize_t store_hrtbt_enb(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret >= 0 && val > 3) - ret = -EINVAL; - if (ret < 0) { - ipath_dev_err(dd, "attempt to set invalid Heartbeat enable\n"); - goto bail; - } - - /* - * Set the "intentional" heartbeat enable per either of - * "Enable" and "Auto", as these are normally set together. - * This bit is consulted when leaving loopback mode, - * because entering loopback mode overrides it and automatically - * disables heartbeat. - */ - r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, val); - if (r < 0) - ret = r; - else if (val == IPATH_IB_HRTBT_OFF) - dd->ipath_flags |= IPATH_NO_HRTBT; - else - dd->ipath_flags &= ~IPATH_NO_HRTBT; - -bail: - return ret; -} - -/* - * Get/Set Link-widths enabled. Or of 1=1x, 2=4x (this is human/IB centric, - * _not_ the particular encoding of any given chip) - */ -static ssize_t show_lwid_enb(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -static ssize_t store_lwid_enb(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret >= 0 && (val == 0 || val > 3)) - ret = -EINVAL; - if (ret < 0) { - ipath_dev_err(dd, - "attempt to set invalid Link Width (enable)\n"); - goto bail; - } - - r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, val); - if (r < 0) - ret = r; - -bail: - return ret; -} - -/* Get current link width */ -static ssize_t show_lwid(struct device *dev, - struct device_attribute *attr, - char *buf) - -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LWID); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -/* - * Get/Set Link-speeds enabled. Or of 1=SDR 2=DDR. - */ -static ssize_t show_spd_enb(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -static ssize_t store_spd_enb(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret >= 0 && (val == 0 || val > (IPATH_IB_SDR | IPATH_IB_DDR))) - ret = -EINVAL; - if (ret < 0) { - ipath_dev_err(dd, - "attempt to set invalid Link Speed (enable)\n"); - goto bail; - } - - r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, val); - if (r < 0) - ret = r; - -bail: - return ret; -} - -/* Get current link speed */ -static ssize_t show_spd(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_SPD); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -/* - * Get/Set RX polarity-invert enable. 0=no, 1=yes. - */ -static ssize_t show_rx_polinv_enb(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_RXPOL_ENB); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -static ssize_t store_rx_polinv_enb(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret >= 0 && val > 1) { - ipath_dev_err(dd, - "attempt to set invalid Rx Polarity (enable)\n"); - ret = -EINVAL; - goto bail; - } - - r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_RXPOL_ENB, val); - if (r < 0) - ret = r; - -bail: - return ret; -} - -/* - * Get/Set RX lane-reversal enable. 0=no, 1=yes. - */ -static ssize_t show_lanerev_enb(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - - ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LREV_ENB); - if (ret >= 0) - ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); - return ret; -} - -static ssize_t store_lanerev_enb(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, r; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret >= 0 && val > 1) { - ret = -EINVAL; - ipath_dev_err(dd, - "attempt to set invalid Lane reversal (enable)\n"); - goto bail; - } - - r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LREV_ENB, val); - if (r < 0) - ret = r; - -bail: - return ret; -} - -static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL); -static DRIVER_ATTR(version, S_IRUGO, show_version, NULL); - -static struct attribute *driver_attributes[] = { - &driver_attr_num_units.attr, - &driver_attr_version.attr, - NULL -}; - -static struct attribute_group driver_attr_group = { - .attrs = driver_attributes -}; - -static ssize_t store_tempsense(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t count) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret, stat; - u16 val; - - ret = ipath_parse_ushort(buf, &val); - if (ret <= 0) { - ipath_dev_err(dd, "attempt to set invalid tempsense config\n"); - goto bail; - } - /* If anything but the highest limit, enable T_CRIT_A "interrupt" */ - stat = ipath_tempsense_write(dd, 9, (val == 0x7f7f) ? 0x80 : 0); - if (stat) { - ipath_dev_err(dd, "Unable to set tempsense config\n"); - ret = -1; - goto bail; - } - stat = ipath_tempsense_write(dd, 0xB, (u8) (val & 0xFF)); - if (stat) { - ipath_dev_err(dd, "Unable to set local Tcrit\n"); - ret = -1; - goto bail; - } - stat = ipath_tempsense_write(dd, 0xD, (u8) (val >> 8)); - if (stat) { - ipath_dev_err(dd, "Unable to set remote Tcrit\n"); - ret = -1; - goto bail; - } - -bail: - return ret; -} - -/* - * dump tempsense regs. in decimal, to ease shell-scripts. - */ -static ssize_t show_tempsense(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ipath_devdata *dd = dev_get_drvdata(dev); - int ret; - int idx; - u8 regvals[8]; - - ret = -ENXIO; - for (idx = 0; idx < 8; ++idx) { - if (idx == 6) - continue; - ret = ipath_tempsense_read(dd, idx); - if (ret < 0) - break; - regvals[idx] = ret; - } - if (idx == 8) - ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n", - *(signed char *)(regvals), - *(signed char *)(regvals + 1), - regvals[2], regvals[3], - *(signed char *)(regvals + 5), - *(signed char *)(regvals + 7)); - return ret; -} - -const struct attribute_group *ipath_driver_attr_groups[] = { - &driver_attr_group, - NULL, -}; - -static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid); -static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc); -static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid); -static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state); -static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid); -static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu); -static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled); -static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL); -static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL); -static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset); -static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL); -static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); -static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL); -static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); -static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL); -static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv); -static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override); -static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL); -static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL); -static DEVICE_ATTR(jint_max_packets, S_IWUSR | S_IRUGO, - show_jint_max_packets, store_jint_max_packets); -static DEVICE_ATTR(jint_idle_ticks, S_IWUSR | S_IRUGO, - show_jint_idle_ticks, store_jint_idle_ticks); -static DEVICE_ATTR(tempsense, S_IWUSR | S_IRUGO, - show_tempsense, store_tempsense); - -static struct attribute *dev_attributes[] = { - &dev_attr_guid.attr, - &dev_attr_lmc.attr, - &dev_attr_lid.attr, - &dev_attr_link_state.attr, - &dev_attr_mlid.attr, - &dev_attr_mtu.attr, - &dev_attr_nguid.attr, - &dev_attr_nports.attr, - &dev_attr_serial.attr, - &dev_attr_status.attr, - &dev_attr_status_str.attr, - &dev_attr_boardversion.attr, - &dev_attr_unit.attr, - &dev_attr_enabled.attr, - &dev_attr_rx_pol_inv.attr, - &dev_attr_led_override.attr, - &dev_attr_logged_errors.attr, - &dev_attr_tempsense.attr, - &dev_attr_localbus_info.attr, - NULL -}; - -static struct attribute_group dev_attr_group = { - .attrs = dev_attributes -}; - -static DEVICE_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb, - store_hrtbt_enb); -static DEVICE_ATTR(link_width_enable, S_IWUSR | S_IRUGO, show_lwid_enb, - store_lwid_enb); -static DEVICE_ATTR(link_width, S_IRUGO, show_lwid, NULL); -static DEVICE_ATTR(link_speed_enable, S_IWUSR | S_IRUGO, show_spd_enb, - store_spd_enb); -static DEVICE_ATTR(link_speed, S_IRUGO, show_spd, NULL); -static DEVICE_ATTR(rx_pol_inv_enable, S_IWUSR | S_IRUGO, show_rx_polinv_enb, - store_rx_polinv_enb); -static DEVICE_ATTR(rx_lane_rev_enable, S_IWUSR | S_IRUGO, show_lanerev_enb, - store_lanerev_enb); - -static struct attribute *dev_ibcfg_attributes[] = { - &dev_attr_hrtbt_enable.attr, - &dev_attr_link_width_enable.attr, - &dev_attr_link_width.attr, - &dev_attr_link_speed_enable.attr, - &dev_attr_link_speed.attr, - &dev_attr_rx_pol_inv_enable.attr, - &dev_attr_rx_lane_rev_enable.attr, - NULL -}; - -static struct attribute_group dev_ibcfg_attr_group = { - .attrs = dev_ibcfg_attributes -}; - -/** - * ipath_expose_reset - create a device reset file - * @dev: the device structure - * - * Only expose a file that lets us reset the device after someone - * enters diag mode. A device reset is quite likely to crash the - * machine entirely, so we don't want to normally make it - * available. - * - * Called with ipath_mutex held. - */ -int ipath_expose_reset(struct device *dev) -{ - static int exposed; - int ret; - - if (!exposed) { - ret = device_create_file(dev, &dev_attr_reset); - exposed = 1; - } else { - ret = 0; - } - - return ret; -} - -int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd) -{ - int ret; - - ret = sysfs_create_group(&dev->kobj, &dev_attr_group); - if (ret) - goto bail; - - ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group); - if (ret) - goto bail_attrs; - - if (dd->ipath_flags & IPATH_HAS_MULT_IB_SPEED) { - ret = device_create_file(dev, &dev_attr_jint_idle_ticks); - if (ret) - goto bail_counter; - ret = device_create_file(dev, &dev_attr_jint_max_packets); - if (ret) - goto bail_idle; - - ret = sysfs_create_group(&dev->kobj, &dev_ibcfg_attr_group); - if (ret) - goto bail_max; - } - - return 0; - -bail_max: - device_remove_file(dev, &dev_attr_jint_max_packets); -bail_idle: - device_remove_file(dev, &dev_attr_jint_idle_ticks); -bail_counter: - sysfs_remove_group(&dev->kobj, &dev_counter_attr_group); -bail_attrs: - sysfs_remove_group(&dev->kobj, &dev_attr_group); -bail: - return ret; -} - -void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd) -{ - sysfs_remove_group(&dev->kobj, &dev_counter_attr_group); - - if (dd->ipath_flags & IPATH_HAS_MULT_IB_SPEED) { - sysfs_remove_group(&dev->kobj, &dev_ibcfg_attr_group); - device_remove_file(dev, &dev_attr_jint_idle_ticks); - device_remove_file(dev, &dev_attr_jint_max_packets); - } - - sysfs_remove_group(&dev->kobj, &dev_attr_group); - - device_remove_file(dev, &dev_attr_reset); -} diff --git a/drivers/staging/rdma/ipath/ipath_uc.c b/drivers/staging/rdma/ipath/ipath_uc.c deleted file mode 100644 index 0246b30280b9..000000000000 --- a/drivers/staging/rdma/ipath/ipath_uc.c +++ /dev/null @@ -1,547 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -/* cut down ridiculously long IB macro names */ -#define OP(x) IB_OPCODE_UC_##x - -/** - * ipath_make_uc_req - construct a request packet (SEND, RDMA write) - * @qp: a pointer to the QP - * - * Return 1 if constructed; otherwise, return 0. - */ -int ipath_make_uc_req(struct ipath_qp *qp) -{ - struct ipath_other_headers *ohdr; - struct ipath_swqe *wqe; - unsigned long flags; - u32 hwords; - u32 bth0; - u32 len; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); - int ret = 0; - - spin_lock_irqsave(&qp->s_lock, flags); - - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) { - if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) - goto bail; - /* We are in the error state, flush the work request. */ - if (qp->s_last == qp->s_head) - goto bail; - /* If DMAs are in progress, we can't flush immediately. */ - if (atomic_read(&qp->s_dma_busy)) { - qp->s_flags |= IPATH_S_WAIT_DMA; - goto bail; - } - wqe = get_swqe_ptr(qp, qp->s_last); - ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); - goto done; - } - - ohdr = &qp->s_hdr.u.oth; - if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) - ohdr = &qp->s_hdr.u.l.oth; - - /* header size in 32-bit words LRH+BTH = (8+12)/4. */ - hwords = 5; - bth0 = 1 << 22; /* Set M bit */ - - /* Get the next send request. */ - wqe = get_swqe_ptr(qp, qp->s_cur); - qp->s_wqe = NULL; - switch (qp->s_state) { - default: - if (!(ib_ipath_state_ops[qp->state] & - IPATH_PROCESS_NEXT_SEND_OK)) - goto bail; - /* Check if send work queue is empty. */ - if (qp->s_cur == qp->s_head) - goto bail; - /* - * Start a new request. - */ - qp->s_psn = wqe->psn = qp->s_next_psn; - qp->s_sge.sge = wqe->sg_list[0]; - qp->s_sge.sg_list = wqe->sg_list + 1; - qp->s_sge.num_sge = wqe->wr.num_sge; - qp->s_len = len = wqe->length; - switch (wqe->wr.opcode) { - case IB_WR_SEND: - case IB_WR_SEND_WITH_IMM: - if (len > pmtu) { - qp->s_state = OP(SEND_FIRST); - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_SEND) - qp->s_state = OP(SEND_ONLY); - else { - qp->s_state = - OP(SEND_ONLY_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - } - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - qp->s_wqe = wqe; - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - - case IB_WR_RDMA_WRITE: - case IB_WR_RDMA_WRITE_WITH_IMM: - ohdr->u.rc.reth.vaddr = - cpu_to_be64(wqe->rdma_wr.remote_addr); - ohdr->u.rc.reth.rkey = - cpu_to_be32(wqe->rdma_wr.rkey); - ohdr->u.rc.reth.length = cpu_to_be32(len); - hwords += sizeof(struct ib_reth) / 4; - if (len > pmtu) { - qp->s_state = OP(RDMA_WRITE_FIRST); - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_RDMA_WRITE) - qp->s_state = OP(RDMA_WRITE_ONLY); - else { - qp->s_state = - OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE); - /* Immediate data comes after the RETH */ - ohdr->u.rc.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - } - qp->s_wqe = wqe; - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - - default: - goto bail; - } - break; - - case OP(SEND_FIRST): - qp->s_state = OP(SEND_MIDDLE); - /* FALLTHROUGH */ - case OP(SEND_MIDDLE): - len = qp->s_len; - if (len > pmtu) { - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_SEND) - qp->s_state = OP(SEND_LAST); - else { - qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - } - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - qp->s_wqe = wqe; - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - - case OP(RDMA_WRITE_FIRST): - qp->s_state = OP(RDMA_WRITE_MIDDLE); - /* FALLTHROUGH */ - case OP(RDMA_WRITE_MIDDLE): - len = qp->s_len; - if (len > pmtu) { - len = pmtu; - break; - } - if (wqe->wr.opcode == IB_WR_RDMA_WRITE) - qp->s_state = OP(RDMA_WRITE_LAST); - else { - qp->s_state = - OP(RDMA_WRITE_LAST_WITH_IMMEDIATE); - /* Immediate data comes after the BTH */ - ohdr->u.imm_data = wqe->wr.ex.imm_data; - hwords += 1; - if (wqe->wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - } - qp->s_wqe = wqe; - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; - break; - } - qp->s_len -= len; - qp->s_hdrwords = hwords; - qp->s_cur_sge = &qp->s_sge; - qp->s_cur_size = len; - ipath_make_ruc_header(to_idev(qp->ibqp.device), - qp, ohdr, bth0 | (qp->s_state << 24), - qp->s_next_psn++ & IPATH_PSN_MASK); -done: - ret = 1; - goto unlock; - -bail: - qp->s_flags &= ~IPATH_S_BUSY; -unlock: - spin_unlock_irqrestore(&qp->s_lock, flags); - return ret; -} - -/** - * ipath_uc_rcv - handle an incoming UC packet - * @dev: the device the packet came in on - * @hdr: the header of the packet - * @has_grh: true if the packet has a GRH - * @data: the packet data - * @tlen: the length of the packet - * @qp: the QP for this packet. - * - * This is called from ipath_qp_rcv() to process an incoming UC packet - * for the given QP. - * Called at interrupt level. - */ -void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp) -{ - struct ipath_other_headers *ohdr; - int opcode; - u32 hdrsize; - u32 psn; - u32 pad; - struct ib_wc wc; - u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); - struct ib_reth *reth; - int header_in_data; - - /* Validate the SLID. See Ch. 9.6.1.5 */ - if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid)) - goto done; - - /* Check for GRH */ - if (!has_grh) { - ohdr = &hdr->u.oth; - hdrsize = 8 + 12; /* LRH + BTH */ - psn = be32_to_cpu(ohdr->bth[2]); - header_in_data = 0; - } else { - ohdr = &hdr->u.l.oth; - hdrsize = 8 + 40 + 12; /* LRH + GRH + BTH */ - /* - * The header with GRH is 60 bytes and the - * core driver sets the eager header buffer - * size to 56 bytes so the last 4 bytes of - * the BTH header (PSN) is in the data buffer. - */ - header_in_data = dev->dd->ipath_rcvhdrentsize == 16; - if (header_in_data) { - psn = be32_to_cpu(((__be32 *) data)[0]); - data += sizeof(__be32); - } else - psn = be32_to_cpu(ohdr->bth[2]); - } - /* - * The opcode is in the low byte when its in network order - * (top byte when in host order). - */ - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; - - memset(&wc, 0, sizeof wc); - - /* Compare the PSN verses the expected PSN. */ - if (unlikely(ipath_cmp24(psn, qp->r_psn) != 0)) { - /* - * Handle a sequence error. - * Silently drop any current message. - */ - qp->r_psn = psn; - inv: - qp->r_state = OP(SEND_LAST); - switch (opcode) { - case OP(SEND_FIRST): - case OP(SEND_ONLY): - case OP(SEND_ONLY_WITH_IMMEDIATE): - goto send_first; - - case OP(RDMA_WRITE_FIRST): - case OP(RDMA_WRITE_ONLY): - case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE): - goto rdma_first; - - default: - dev->n_pkt_drops++; - goto done; - } - } - - /* Check for opcode sequence errors. */ - switch (qp->r_state) { - case OP(SEND_FIRST): - case OP(SEND_MIDDLE): - if (opcode == OP(SEND_MIDDLE) || - opcode == OP(SEND_LAST) || - opcode == OP(SEND_LAST_WITH_IMMEDIATE)) - break; - goto inv; - - case OP(RDMA_WRITE_FIRST): - case OP(RDMA_WRITE_MIDDLE): - if (opcode == OP(RDMA_WRITE_MIDDLE) || - opcode == OP(RDMA_WRITE_LAST) || - opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE)) - break; - goto inv; - - default: - if (opcode == OP(SEND_FIRST) || - opcode == OP(SEND_ONLY) || - opcode == OP(SEND_ONLY_WITH_IMMEDIATE) || - opcode == OP(RDMA_WRITE_FIRST) || - opcode == OP(RDMA_WRITE_ONLY) || - opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) - break; - goto inv; - } - - /* OK, process the packet. */ - switch (opcode) { - case OP(SEND_FIRST): - case OP(SEND_ONLY): - case OP(SEND_ONLY_WITH_IMMEDIATE): - send_first: - if (qp->r_flags & IPATH_R_REUSE_SGE) { - qp->r_flags &= ~IPATH_R_REUSE_SGE; - qp->r_sge = qp->s_rdma_read_sge; - } else if (!ipath_get_rwqe(qp, 0)) { - dev->n_pkt_drops++; - goto done; - } - /* Save the WQE so we can reuse it in case of an error. */ - qp->s_rdma_read_sge = qp->r_sge; - qp->r_rcv_len = 0; - if (opcode == OP(SEND_ONLY)) - goto send_last; - else if (opcode == OP(SEND_ONLY_WITH_IMMEDIATE)) - goto send_last_imm; - /* FALLTHROUGH */ - case OP(SEND_MIDDLE): - /* Check for invalid length PMTU or posted rwqe len. */ - if (unlikely(tlen != (hdrsize + pmtu + 4))) { - qp->r_flags |= IPATH_R_REUSE_SGE; - dev->n_pkt_drops++; - goto done; - } - qp->r_rcv_len += pmtu; - if (unlikely(qp->r_rcv_len > qp->r_len)) { - qp->r_flags |= IPATH_R_REUSE_SGE; - dev->n_pkt_drops++; - goto done; - } - ipath_copy_sge(&qp->r_sge, data, pmtu); - break; - - case OP(SEND_LAST_WITH_IMMEDIATE): - send_last_imm: - if (header_in_data) { - wc.ex.imm_data = *(__be32 *) data; - data += sizeof(__be32); - } else { - /* Immediate data comes after BTH */ - wc.ex.imm_data = ohdr->u.imm_data; - } - hdrsize += 4; - wc.wc_flags = IB_WC_WITH_IMM; - /* FALLTHROUGH */ - case OP(SEND_LAST): - send_last: - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* Check for invalid length. */ - /* XXX LAST len should be >= 1 */ - if (unlikely(tlen < (hdrsize + pad + 4))) { - qp->r_flags |= IPATH_R_REUSE_SGE; - dev->n_pkt_drops++; - goto done; - } - /* Don't count the CRC. */ - tlen -= (hdrsize + pad + 4); - wc.byte_len = tlen + qp->r_rcv_len; - if (unlikely(wc.byte_len > qp->r_len)) { - qp->r_flags |= IPATH_R_REUSE_SGE; - dev->n_pkt_drops++; - goto done; - } - wc.opcode = IB_WC_RECV; - last_imm: - ipath_copy_sge(&qp->r_sge, data, tlen); - wc.wr_id = qp->r_wr_id; - wc.status = IB_WC_SUCCESS; - wc.qp = &qp->ibqp; - wc.src_qp = qp->remote_qpn; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(1 << 23)) != 0); - break; - - case OP(RDMA_WRITE_FIRST): - case OP(RDMA_WRITE_ONLY): - case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE): /* consume RWQE */ - rdma_first: - /* RETH comes after BTH */ - if (!header_in_data) - reth = &ohdr->u.rc.reth; - else { - reth = (struct ib_reth *)data; - data += sizeof(*reth); - } - hdrsize += sizeof(*reth); - qp->r_len = be32_to_cpu(reth->length); - qp->r_rcv_len = 0; - if (qp->r_len != 0) { - u32 rkey = be32_to_cpu(reth->rkey); - u64 vaddr = be64_to_cpu(reth->vaddr); - int ok; - - /* Check rkey */ - ok = ipath_rkey_ok(qp, &qp->r_sge, qp->r_len, - vaddr, rkey, - IB_ACCESS_REMOTE_WRITE); - if (unlikely(!ok)) { - dev->n_pkt_drops++; - goto done; - } - } else { - qp->r_sge.sg_list = NULL; - qp->r_sge.sge.mr = NULL; - qp->r_sge.sge.vaddr = NULL; - qp->r_sge.sge.length = 0; - qp->r_sge.sge.sge_length = 0; - } - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_WRITE))) { - dev->n_pkt_drops++; - goto done; - } - if (opcode == OP(RDMA_WRITE_ONLY)) - goto rdma_last; - else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) - goto rdma_last_imm; - /* FALLTHROUGH */ - case OP(RDMA_WRITE_MIDDLE): - /* Check for invalid length PMTU or posted rwqe len. */ - if (unlikely(tlen != (hdrsize + pmtu + 4))) { - dev->n_pkt_drops++; - goto done; - } - qp->r_rcv_len += pmtu; - if (unlikely(qp->r_rcv_len > qp->r_len)) { - dev->n_pkt_drops++; - goto done; - } - ipath_copy_sge(&qp->r_sge, data, pmtu); - break; - - case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE): - rdma_last_imm: - if (header_in_data) { - wc.ex.imm_data = *(__be32 *) data; - data += sizeof(__be32); - } else { - /* Immediate data comes after BTH */ - wc.ex.imm_data = ohdr->u.imm_data; - } - hdrsize += 4; - wc.wc_flags = IB_WC_WITH_IMM; - - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* Check for invalid length. */ - /* XXX LAST len should be >= 1 */ - if (unlikely(tlen < (hdrsize + pad + 4))) { - dev->n_pkt_drops++; - goto done; - } - /* Don't count the CRC. */ - tlen -= (hdrsize + pad + 4); - if (unlikely(tlen + qp->r_rcv_len != qp->r_len)) { - dev->n_pkt_drops++; - goto done; - } - if (qp->r_flags & IPATH_R_REUSE_SGE) - qp->r_flags &= ~IPATH_R_REUSE_SGE; - else if (!ipath_get_rwqe(qp, 1)) { - dev->n_pkt_drops++; - goto done; - } - wc.byte_len = qp->r_len; - wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; - goto last_imm; - - case OP(RDMA_WRITE_LAST): - rdma_last: - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - /* Check for invalid length. */ - /* XXX LAST len should be >= 1 */ - if (unlikely(tlen < (hdrsize + pad + 4))) { - dev->n_pkt_drops++; - goto done; - } - /* Don't count the CRC. */ - tlen -= (hdrsize + pad + 4); - if (unlikely(tlen + qp->r_rcv_len != qp->r_len)) { - dev->n_pkt_drops++; - goto done; - } - ipath_copy_sge(&qp->r_sge, data, tlen); - break; - - default: - /* Drop packet for unknown opcodes. */ - dev->n_pkt_drops++; - goto done; - } - qp->r_psn++; - qp->r_state = opcode; -done: - return; -} diff --git a/drivers/staging/rdma/ipath/ipath_ud.c b/drivers/staging/rdma/ipath/ipath_ud.c deleted file mode 100644 index 385d9410a51e..000000000000 --- a/drivers/staging/rdma/ipath/ipath_ud.c +++ /dev/null @@ -1,579 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include - -#include "ipath_verbs.h" -#include "ipath_kernel.h" - -/** - * ipath_ud_loopback - handle send on loopback QPs - * @sqp: the sending QP - * @swqe: the send work request - * - * This is called from ipath_make_ud_req() to forward a WQE addressed - * to the same HCA. - * Note that the receive interrupt handler may be calling ipath_ud_rcv() - * while this is being called. - */ -static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_swqe *swqe) -{ - struct ipath_ibdev *dev = to_idev(sqp->ibqp.device); - struct ipath_qp *qp; - struct ib_ah_attr *ah_attr; - unsigned long flags; - struct ipath_rq *rq; - struct ipath_srq *srq; - struct ipath_sge_state rsge; - struct ipath_sge *sge; - struct ipath_rwq *wq; - struct ipath_rwqe *wqe; - void (*handler)(struct ib_event *, void *); - struct ib_wc wc; - u32 tail; - u32 rlen; - u32 length; - - qp = ipath_lookup_qpn(&dev->qp_table, swqe->ud_wr.remote_qpn); - if (!qp || !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { - dev->n_pkt_drops++; - goto done; - } - - /* - * Check that the qkey matches (except for QP0, see 9.6.1.4.1). - * Qkeys with the high order bit set mean use the - * qkey from the QP context instead of the WR (see 10.2.5). - */ - if (unlikely(qp->ibqp.qp_num && - ((int) swqe->ud_wr.remote_qkey < 0 ? - sqp->qkey : swqe->ud_wr.remote_qkey) != qp->qkey)) { - /* XXX OK to lose a count once in a while. */ - dev->qkey_violations++; - dev->n_pkt_drops++; - goto drop; - } - - /* - * A GRH is expected to precede the data even if not - * present on the wire. - */ - length = swqe->length; - memset(&wc, 0, sizeof wc); - wc.byte_len = length + sizeof(struct ib_grh); - - if (swqe->wr.opcode == IB_WR_SEND_WITH_IMM) { - wc.wc_flags = IB_WC_WITH_IMM; - wc.ex.imm_data = swqe->wr.ex.imm_data; - } - - /* - * This would be a lot simpler if we could call ipath_get_rwqe() - * but that uses state that the receive interrupt handler uses - * so we would need to lock out receive interrupts while doing - * local loopback. - */ - if (qp->ibqp.srq) { - srq = to_isrq(qp->ibqp.srq); - handler = srq->ibsrq.event_handler; - rq = &srq->rq; - } else { - srq = NULL; - handler = NULL; - rq = &qp->r_rq; - } - - /* - * Get the next work request entry to find where to put the data. - * Note that it is safe to drop the lock after changing rq->tail - * since ipath_post_receive() won't fill the empty slot. - */ - spin_lock_irqsave(&rq->lock, flags); - wq = rq->wq; - tail = wq->tail; - /* Validate tail before using it since it is user writable. */ - if (tail >= rq->size) - tail = 0; - if (unlikely(tail == wq->head)) { - spin_unlock_irqrestore(&rq->lock, flags); - dev->n_pkt_drops++; - goto drop; - } - wqe = get_rwqe_ptr(rq, tail); - rsge.sg_list = qp->r_ud_sg_list; - if (!ipath_init_sge(qp, wqe, &rlen, &rsge)) { - spin_unlock_irqrestore(&rq->lock, flags); - dev->n_pkt_drops++; - goto drop; - } - /* Silently drop packets which are too big. */ - if (wc.byte_len > rlen) { - spin_unlock_irqrestore(&rq->lock, flags); - dev->n_pkt_drops++; - goto drop; - } - if (++tail >= rq->size) - tail = 0; - wq->tail = tail; - wc.wr_id = wqe->wr_id; - if (handler) { - u32 n; - - /* - * validate head pointer value and compute - * the number of remaining WQEs. - */ - n = wq->head; - if (n >= rq->size) - n = 0; - if (n < tail) - n += rq->size - tail; - else - n -= tail; - if (n < srq->limit) { - struct ib_event ev; - - srq->limit = 0; - spin_unlock_irqrestore(&rq->lock, flags); - ev.device = qp->ibqp.device; - ev.element.srq = qp->ibqp.srq; - ev.event = IB_EVENT_SRQ_LIMIT_REACHED; - handler(&ev, srq->ibsrq.srq_context); - } else - spin_unlock_irqrestore(&rq->lock, flags); - } else - spin_unlock_irqrestore(&rq->lock, flags); - - ah_attr = &to_iah(swqe->ud_wr.ah)->attr; - if (ah_attr->ah_flags & IB_AH_GRH) { - ipath_copy_sge(&rsge, &ah_attr->grh, sizeof(struct ib_grh)); - wc.wc_flags |= IB_WC_GRH; - } else - ipath_skip_sge(&rsge, sizeof(struct ib_grh)); - sge = swqe->sg_list; - while (length) { - u32 len = sge->length; - - if (len > length) - len = length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - ipath_copy_sge(&rsge, sge->vaddr, len); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--swqe->wr.num_sge) - sge++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - length -= len; - } - wc.status = IB_WC_SUCCESS; - wc.opcode = IB_WC_RECV; - wc.qp = &qp->ibqp; - wc.src_qp = sqp->ibqp.qp_num; - /* XXX do we know which pkey matched? Only needed for GSI. */ - wc.pkey_index = 0; - wc.slid = dev->dd->ipath_lid | - (ah_attr->src_path_bits & - ((1 << dev->dd->ipath_lmc) - 1)); - wc.sl = ah_attr->sl; - wc.dlid_path_bits = - ah_attr->dlid & ((1 << dev->dd->ipath_lmc) - 1); - wc.port_num = 1; - /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, - swqe->ud_wr.wr.send_flags & IB_SEND_SOLICITED); -drop: - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); -done:; -} - -/** - * ipath_make_ud_req - construct a UD request packet - * @qp: the QP - * - * Return 1 if constructed; otherwise, return 0. - */ -int ipath_make_ud_req(struct ipath_qp *qp) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_other_headers *ohdr; - struct ib_ah_attr *ah_attr; - struct ipath_swqe *wqe; - unsigned long flags; - u32 nwords; - u32 extra_bytes; - u32 bth0; - u16 lrh0; - u16 lid; - int ret = 0; - int next_cur; - - spin_lock_irqsave(&qp->s_lock, flags); - - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_NEXT_SEND_OK)) { - if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) - goto bail; - /* We are in the error state, flush the work request. */ - if (qp->s_last == qp->s_head) - goto bail; - /* If DMAs are in progress, we can't flush immediately. */ - if (atomic_read(&qp->s_dma_busy)) { - qp->s_flags |= IPATH_S_WAIT_DMA; - goto bail; - } - wqe = get_swqe_ptr(qp, qp->s_last); - ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); - goto done; - } - - if (qp->s_cur == qp->s_head) - goto bail; - - wqe = get_swqe_ptr(qp, qp->s_cur); - next_cur = qp->s_cur + 1; - if (next_cur >= qp->s_size) - next_cur = 0; - - /* Construct the header. */ - ah_attr = &to_iah(wqe->ud_wr.ah)->attr; - if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE) { - if (ah_attr->dlid != IPATH_PERMISSIVE_LID) - dev->n_multicast_xmit++; - else - dev->n_unicast_xmit++; - } else { - dev->n_unicast_xmit++; - lid = ah_attr->dlid & ~((1 << dev->dd->ipath_lmc) - 1); - if (unlikely(lid == dev->dd->ipath_lid)) { - /* - * If DMAs are in progress, we can't generate - * a completion for the loopback packet since - * it would be out of order. - * XXX Instead of waiting, we could queue a - * zero length descriptor so we get a callback. - */ - if (atomic_read(&qp->s_dma_busy)) { - qp->s_flags |= IPATH_S_WAIT_DMA; - goto bail; - } - qp->s_cur = next_cur; - spin_unlock_irqrestore(&qp->s_lock, flags); - ipath_ud_loopback(qp, wqe); - spin_lock_irqsave(&qp->s_lock, flags); - ipath_send_complete(qp, wqe, IB_WC_SUCCESS); - goto done; - } - } - - qp->s_cur = next_cur; - extra_bytes = -wqe->length & 3; - nwords = (wqe->length + extra_bytes) >> 2; - - /* header size in 32-bit words LRH+BTH+DETH = (8+12+8)/4. */ - qp->s_hdrwords = 7; - qp->s_cur_size = wqe->length; - qp->s_cur_sge = &qp->s_sge; - qp->s_dmult = ah_attr->static_rate; - qp->s_wqe = wqe; - qp->s_sge.sge = wqe->sg_list[0]; - qp->s_sge.sg_list = wqe->sg_list + 1; - qp->s_sge.num_sge = wqe->ud_wr.wr.num_sge; - - if (ah_attr->ah_flags & IB_AH_GRH) { - /* Header size in 32-bit words. */ - qp->s_hdrwords += ipath_make_grh(dev, &qp->s_hdr.u.l.grh, - &ah_attr->grh, - qp->s_hdrwords, nwords); - lrh0 = IPATH_LRH_GRH; - ohdr = &qp->s_hdr.u.l.oth; - /* - * Don't worry about sending to locally attached multicast - * QPs. It is unspecified by the spec. what happens. - */ - } else { - /* Header size in 32-bit words. */ - lrh0 = IPATH_LRH_BTH; - ohdr = &qp->s_hdr.u.oth; - } - if (wqe->ud_wr.wr.opcode == IB_WR_SEND_WITH_IMM) { - qp->s_hdrwords++; - ohdr->u.ud.imm_data = wqe->ud_wr.wr.ex.imm_data; - bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24; - } else - bth0 = IB_OPCODE_UD_SEND_ONLY << 24; - lrh0 |= ah_attr->sl << 4; - if (qp->ibqp.qp_type == IB_QPT_SMI) - lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */ - qp->s_hdr.lrh[0] = cpu_to_be16(lrh0); - qp->s_hdr.lrh[1] = cpu_to_be16(ah_attr->dlid); /* DEST LID */ - qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + nwords + - SIZE_OF_CRC); - lid = dev->dd->ipath_lid; - if (lid) { - lid |= ah_attr->src_path_bits & - ((1 << dev->dd->ipath_lmc) - 1); - qp->s_hdr.lrh[3] = cpu_to_be16(lid); - } else - qp->s_hdr.lrh[3] = IB_LID_PERMISSIVE; - if (wqe->ud_wr.wr.send_flags & IB_SEND_SOLICITED) - bth0 |= 1 << 23; - bth0 |= extra_bytes << 20; - bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPATH_DEFAULT_P_KEY : - ipath_get_pkey(dev->dd, qp->s_pkey_index); - ohdr->bth[0] = cpu_to_be32(bth0); - /* - * Use the multicast QP if the destination LID is a multicast LID. - */ - ohdr->bth[1] = ah_attr->dlid >= IPATH_MULTICAST_LID_BASE && - ah_attr->dlid != IPATH_PERMISSIVE_LID ? - cpu_to_be32(IPATH_MULTICAST_QPN) : - cpu_to_be32(wqe->ud_wr.remote_qpn); - ohdr->bth[2] = cpu_to_be32(qp->s_next_psn++ & IPATH_PSN_MASK); - /* - * Qkeys with the high order bit set mean use the - * qkey from the QP context instead of the WR (see 10.2.5). - */ - ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ? - qp->qkey : wqe->ud_wr.remote_qkey); - ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num); - -done: - ret = 1; - goto unlock; - -bail: - qp->s_flags &= ~IPATH_S_BUSY; -unlock: - spin_unlock_irqrestore(&qp->s_lock, flags); - return ret; -} - -/** - * ipath_ud_rcv - receive an incoming UD packet - * @dev: the device the packet came in on - * @hdr: the packet header - * @has_grh: true if the packet has a GRH - * @data: the packet data - * @tlen: the packet length - * @qp: the QP the packet came on - * - * This is called from ipath_qp_rcv() to process an incoming UD packet - * for the given QP. - * Called at interrupt level. - */ -void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp) -{ - struct ipath_other_headers *ohdr; - int opcode; - u32 hdrsize; - u32 pad; - struct ib_wc wc; - u32 qkey; - u32 src_qp; - u16 dlid; - int header_in_data; - - /* Check for GRH */ - if (!has_grh) { - ohdr = &hdr->u.oth; - hdrsize = 8 + 12 + 8; /* LRH + BTH + DETH */ - qkey = be32_to_cpu(ohdr->u.ud.deth[0]); - src_qp = be32_to_cpu(ohdr->u.ud.deth[1]); - header_in_data = 0; - } else { - ohdr = &hdr->u.l.oth; - hdrsize = 8 + 40 + 12 + 8; /* LRH + GRH + BTH + DETH */ - /* - * The header with GRH is 68 bytes and the core driver sets - * the eager header buffer size to 56 bytes so the last 12 - * bytes of the IB header is in the data buffer. - */ - header_in_data = dev->dd->ipath_rcvhdrentsize == 16; - if (header_in_data) { - qkey = be32_to_cpu(((__be32 *) data)[1]); - src_qp = be32_to_cpu(((__be32 *) data)[2]); - data += 12; - } else { - qkey = be32_to_cpu(ohdr->u.ud.deth[0]); - src_qp = be32_to_cpu(ohdr->u.ud.deth[1]); - } - } - src_qp &= IPATH_QPN_MASK; - - /* - * Check that the permissive LID is only used on QP0 - * and the QKEY matches (see 9.6.1.4.1 and 9.6.1.5.1). - */ - if (qp->ibqp.qp_num) { - if (unlikely(hdr->lrh[1] == IB_LID_PERMISSIVE || - hdr->lrh[3] == IB_LID_PERMISSIVE)) { - dev->n_pkt_drops++; - goto bail; - } - if (unlikely(qkey != qp->qkey)) { - /* XXX OK to lose a count once in a while. */ - dev->qkey_violations++; - dev->n_pkt_drops++; - goto bail; - } - } else if (hdr->lrh[1] == IB_LID_PERMISSIVE || - hdr->lrh[3] == IB_LID_PERMISSIVE) { - struct ib_smp *smp = (struct ib_smp *) data; - - if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { - dev->n_pkt_drops++; - goto bail; - } - } - - /* - * The opcode is in the low byte when its in network order - * (top byte when in host order). - */ - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; - if (qp->ibqp.qp_num > 1 && - opcode == IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE) { - if (header_in_data) { - wc.ex.imm_data = *(__be32 *) data; - data += sizeof(__be32); - } else - wc.ex.imm_data = ohdr->u.ud.imm_data; - wc.wc_flags = IB_WC_WITH_IMM; - hdrsize += sizeof(u32); - } else if (opcode == IB_OPCODE_UD_SEND_ONLY) { - wc.ex.imm_data = 0; - wc.wc_flags = 0; - } else { - dev->n_pkt_drops++; - goto bail; - } - - /* Get the number of bytes the message was padded by. */ - pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3; - if (unlikely(tlen < (hdrsize + pad + 4))) { - /* Drop incomplete packets. */ - dev->n_pkt_drops++; - goto bail; - } - tlen -= hdrsize + pad + 4; - - /* Drop invalid MAD packets (see 13.5.3.1). */ - if (unlikely((qp->ibqp.qp_num == 0 && - (tlen != 256 || - (be16_to_cpu(hdr->lrh[0]) >> 12) != 15)) || - (qp->ibqp.qp_num == 1 && - (tlen != 256 || - (be16_to_cpu(hdr->lrh[0]) >> 12) == 15)))) { - dev->n_pkt_drops++; - goto bail; - } - - /* - * A GRH is expected to precede the data even if not - * present on the wire. - */ - wc.byte_len = tlen + sizeof(struct ib_grh); - - /* - * Get the next work request entry to find where to put the data. - */ - if (qp->r_flags & IPATH_R_REUSE_SGE) - qp->r_flags &= ~IPATH_R_REUSE_SGE; - else if (!ipath_get_rwqe(qp, 0)) { - /* - * Count VL15 packets dropped due to no receive buffer. - * Otherwise, count them as buffer overruns since usually, - * the HW will be able to receive packets even if there are - * no QPs with posted receive buffers. - */ - if (qp->ibqp.qp_num == 0) - dev->n_vl15_dropped++; - else - dev->rcv_errors++; - goto bail; - } - /* Silently drop packets which are too big. */ - if (wc.byte_len > qp->r_len) { - qp->r_flags |= IPATH_R_REUSE_SGE; - dev->n_pkt_drops++; - goto bail; - } - if (has_grh) { - ipath_copy_sge(&qp->r_sge, &hdr->u.l.grh, - sizeof(struct ib_grh)); - wc.wc_flags |= IB_WC_GRH; - } else - ipath_skip_sge(&qp->r_sge, sizeof(struct ib_grh)); - ipath_copy_sge(&qp->r_sge, data, - wc.byte_len - sizeof(struct ib_grh)); - if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) - goto bail; - wc.wr_id = qp->r_wr_id; - wc.status = IB_WC_SUCCESS; - wc.opcode = IB_WC_RECV; - wc.vendor_err = 0; - wc.qp = &qp->ibqp; - wc.src_qp = src_qp; - /* XXX do we know which pkey matched? Only needed for GSI. */ - wc.pkey_index = 0; - wc.slid = be16_to_cpu(hdr->lrh[3]); - wc.sl = (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF; - dlid = be16_to_cpu(hdr->lrh[1]); - /* - * Save the LMC lower bits if the destination LID is a unicast LID. - */ - wc.dlid_path_bits = dlid >= IPATH_MULTICAST_LID_BASE ? 0 : - dlid & ((1 << dev->dd->ipath_lmc) - 1); - wc.port_num = 1; - /* Signal completion event if the solicited bit is set. */ - ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(1 << 23)) != 0); - -bail:; -} diff --git a/drivers/staging/rdma/ipath/ipath_user_pages.c b/drivers/staging/rdma/ipath/ipath_user_pages.c deleted file mode 100644 index d29b4daf61f8..000000000000 --- a/drivers/staging/rdma/ipath/ipath_user_pages.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include - -#include "ipath_kernel.h" - -static void __ipath_release_user_pages(struct page **p, size_t num_pages, - int dirty) -{ - size_t i; - - for (i = 0; i < num_pages; i++) { - ipath_cdbg(MM, "%lu/%lu put_page %p\n", (unsigned long) i, - (unsigned long) num_pages, p[i]); - if (dirty) - set_page_dirty_lock(p[i]); - put_page(p[i]); - } -} - -/* call with current->mm->mmap_sem held */ -static int __ipath_get_user_pages(unsigned long start_page, size_t num_pages, - struct page **p) -{ - unsigned long lock_limit; - size_t got; - int ret; - - lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT; - - if (num_pages > lock_limit) { - ret = -ENOMEM; - goto bail; - } - - ipath_cdbg(VERBOSE, "pin %lx pages from vaddr %lx\n", - (unsigned long) num_pages, start_page); - - for (got = 0; got < num_pages; got += ret) { - ret = get_user_pages(current, current->mm, - start_page + got * PAGE_SIZE, - num_pages - got, 1, 1, - p + got, NULL); - if (ret < 0) - goto bail_release; - } - - current->mm->pinned_vm += num_pages; - - ret = 0; - goto bail; - -bail_release: - __ipath_release_user_pages(p, got, 0); -bail: - return ret; -} - -/** - * ipath_map_page - a safety wrapper around pci_map_page() - * - * A dma_addr of all 0's is interpreted by the chip as "disabled". - * Unfortunately, it can also be a valid dma_addr returned on some - * architectures. - * - * The powerpc iommu assigns dma_addrs in ascending order, so we don't - * have to bother with retries or mapping a dummy page to insure we - * don't just get the same mapping again. - * - * I'm sure we won't be so lucky with other iommu's, so FIXME. - */ -dma_addr_t ipath_map_page(struct pci_dev *hwdev, struct page *page, - unsigned long offset, size_t size, int direction) -{ - dma_addr_t phys; - - phys = pci_map_page(hwdev, page, offset, size, direction); - - if (phys == 0) { - pci_unmap_page(hwdev, phys, size, direction); - phys = pci_map_page(hwdev, page, offset, size, direction); - /* - * FIXME: If we get 0 again, we should keep this page, - * map another, then free the 0 page. - */ - } - - return phys; -} - -/** - * ipath_map_single - a safety wrapper around pci_map_single() - * - * Same idea as ipath_map_page(). - */ -dma_addr_t ipath_map_single(struct pci_dev *hwdev, void *ptr, size_t size, - int direction) -{ - dma_addr_t phys; - - phys = pci_map_single(hwdev, ptr, size, direction); - - if (phys == 0) { - pci_unmap_single(hwdev, phys, size, direction); - phys = pci_map_single(hwdev, ptr, size, direction); - /* - * FIXME: If we get 0 again, we should keep this page, - * map another, then free the 0 page. - */ - } - - return phys; -} - -/** - * ipath_get_user_pages - lock user pages into memory - * @start_page: the start page - * @num_pages: the number of pages - * @p: the output page structures - * - * This function takes a given start page (page aligned user virtual - * address) and pins it and the following specified number of pages. For - * now, num_pages is always 1, but that will probably change at some point - * (because caller is doing expected sends on a single virtually contiguous - * buffer, so we can do all pages at once). - */ -int ipath_get_user_pages(unsigned long start_page, size_t num_pages, - struct page **p) -{ - int ret; - - down_write(¤t->mm->mmap_sem); - - ret = __ipath_get_user_pages(start_page, num_pages, p); - - up_write(¤t->mm->mmap_sem); - - return ret; -} - -void ipath_release_user_pages(struct page **p, size_t num_pages) -{ - down_write(¤t->mm->mmap_sem); - - __ipath_release_user_pages(p, num_pages, 1); - - current->mm->pinned_vm -= num_pages; - - up_write(¤t->mm->mmap_sem); -} - -struct ipath_user_pages_work { - struct work_struct work; - struct mm_struct *mm; - unsigned long num_pages; -}; - -static void user_pages_account(struct work_struct *_work) -{ - struct ipath_user_pages_work *work = - container_of(_work, struct ipath_user_pages_work, work); - - down_write(&work->mm->mmap_sem); - work->mm->pinned_vm -= work->num_pages; - up_write(&work->mm->mmap_sem); - mmput(work->mm); - kfree(work); -} - -void ipath_release_user_pages_on_close(struct page **p, size_t num_pages) -{ - struct ipath_user_pages_work *work; - struct mm_struct *mm; - - __ipath_release_user_pages(p, num_pages, 1); - - mm = get_task_mm(current); - if (!mm) - return; - - work = kmalloc(sizeof(*work), GFP_KERNEL); - if (!work) - goto bail_mm; - - INIT_WORK(&work->work, user_pages_account); - work->mm = mm; - work->num_pages = num_pages; - - queue_work(ib_wq, &work->work); - return; - -bail_mm: - mmput(mm); - return; -} diff --git a/drivers/staging/rdma/ipath/ipath_user_sdma.c b/drivers/staging/rdma/ipath/ipath_user_sdma.c deleted file mode 100644 index 8c12e3cccc58..000000000000 --- a/drivers/staging/rdma/ipath/ipath_user_sdma.c +++ /dev/null @@ -1,874 +0,0 @@ -/* - * Copyright (c) 2007, 2008 QLogic Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_user_sdma.h" - -/* minimum size of header */ -#define IPATH_USER_SDMA_MIN_HEADER_LENGTH 64 -/* expected size of headers (for dma_pool) */ -#define IPATH_USER_SDMA_EXP_HEADER_LENGTH 64 -/* length mask in PBC (lower 11 bits) */ -#define IPATH_PBC_LENGTH_MASK ((1 << 11) - 1) - -struct ipath_user_sdma_pkt { - u8 naddr; /* dimension of addr (1..3) ... */ - u32 counter; /* sdma pkts queued counter for this entry */ - u64 added; /* global descq number of entries */ - - struct { - u32 offset; /* offset for kvaddr, addr */ - u32 length; /* length in page */ - u8 put_page; /* should we put_page? */ - u8 dma_mapped; /* is page dma_mapped? */ - struct page *page; /* may be NULL (coherent mem) */ - void *kvaddr; /* FIXME: only for pio hack */ - dma_addr_t addr; - } addr[4]; /* max pages, any more and we coalesce */ - struct list_head list; /* list element */ -}; - -struct ipath_user_sdma_queue { - /* - * pkts sent to dma engine are queued on this - * list head. the type of the elements of this - * list are struct ipath_user_sdma_pkt... - */ - struct list_head sent; - - /* headers with expected length are allocated from here... */ - char header_cache_name[64]; - struct dma_pool *header_cache; - - /* packets are allocated from the slab cache... */ - char pkt_slab_name[64]; - struct kmem_cache *pkt_slab; - - /* as packets go on the queued queue, they are counted... */ - u32 counter; - u32 sent_counter; - - /* dma page table */ - struct rb_root dma_pages_root; - - /* protect everything above... */ - struct mutex lock; -}; - -struct ipath_user_sdma_queue * -ipath_user_sdma_queue_create(struct device *dev, int unit, int port, int sport) -{ - struct ipath_user_sdma_queue *pq = - kmalloc(sizeof(struct ipath_user_sdma_queue), GFP_KERNEL); - - if (!pq) - goto done; - - pq->counter = 0; - pq->sent_counter = 0; - INIT_LIST_HEAD(&pq->sent); - - mutex_init(&pq->lock); - - snprintf(pq->pkt_slab_name, sizeof(pq->pkt_slab_name), - "ipath-user-sdma-pkts-%u-%02u.%02u", unit, port, sport); - pq->pkt_slab = kmem_cache_create(pq->pkt_slab_name, - sizeof(struct ipath_user_sdma_pkt), - 0, 0, NULL); - - if (!pq->pkt_slab) - goto err_kfree; - - snprintf(pq->header_cache_name, sizeof(pq->header_cache_name), - "ipath-user-sdma-headers-%u-%02u.%02u", unit, port, sport); - pq->header_cache = dma_pool_create(pq->header_cache_name, - dev, - IPATH_USER_SDMA_EXP_HEADER_LENGTH, - 4, 0); - if (!pq->header_cache) - goto err_slab; - - pq->dma_pages_root = RB_ROOT; - - goto done; - -err_slab: - kmem_cache_destroy(pq->pkt_slab); -err_kfree: - kfree(pq); - pq = NULL; - -done: - return pq; -} - -static void ipath_user_sdma_init_frag(struct ipath_user_sdma_pkt *pkt, - int i, size_t offset, size_t len, - int put_page, int dma_mapped, - struct page *page, - void *kvaddr, dma_addr_t dma_addr) -{ - pkt->addr[i].offset = offset; - pkt->addr[i].length = len; - pkt->addr[i].put_page = put_page; - pkt->addr[i].dma_mapped = dma_mapped; - pkt->addr[i].page = page; - pkt->addr[i].kvaddr = kvaddr; - pkt->addr[i].addr = dma_addr; -} - -static void ipath_user_sdma_init_header(struct ipath_user_sdma_pkt *pkt, - u32 counter, size_t offset, - size_t len, int dma_mapped, - struct page *page, - void *kvaddr, dma_addr_t dma_addr) -{ - pkt->naddr = 1; - pkt->counter = counter; - ipath_user_sdma_init_frag(pkt, 0, offset, len, 0, dma_mapped, page, - kvaddr, dma_addr); -} - -/* we've too many pages in the iovec, coalesce to a single page */ -static int ipath_user_sdma_coalesce(const struct ipath_devdata *dd, - struct ipath_user_sdma_pkt *pkt, - const struct iovec *iov, - unsigned long niov) { - int ret = 0; - struct page *page = alloc_page(GFP_KERNEL); - void *mpage_save; - char *mpage; - int i; - int len = 0; - dma_addr_t dma_addr; - - if (!page) { - ret = -ENOMEM; - goto done; - } - - mpage = kmap(page); - mpage_save = mpage; - for (i = 0; i < niov; i++) { - int cfur; - - cfur = copy_from_user(mpage, - iov[i].iov_base, iov[i].iov_len); - if (cfur) { - ret = -EFAULT; - goto free_unmap; - } - - mpage += iov[i].iov_len; - len += iov[i].iov_len; - } - - dma_addr = dma_map_page(&dd->pcidev->dev, page, 0, len, - DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, dma_addr)) { - ret = -ENOMEM; - goto free_unmap; - } - - ipath_user_sdma_init_frag(pkt, 1, 0, len, 0, 1, page, mpage_save, - dma_addr); - pkt->naddr = 2; - - goto done; - -free_unmap: - kunmap(page); - __free_page(page); -done: - return ret; -} - -/* how many pages in this iovec element? */ -static int ipath_user_sdma_num_pages(const struct iovec *iov) -{ - const unsigned long addr = (unsigned long) iov->iov_base; - const unsigned long len = iov->iov_len; - const unsigned long spage = addr & PAGE_MASK; - const unsigned long epage = (addr + len - 1) & PAGE_MASK; - - return 1 + ((epage - spage) >> PAGE_SHIFT); -} - -/* truncate length to page boundary */ -static int ipath_user_sdma_page_length(unsigned long addr, unsigned long len) -{ - const unsigned long offset = offset_in_page(addr); - - return ((offset + len) > PAGE_SIZE) ? (PAGE_SIZE - offset) : len; -} - -static void ipath_user_sdma_free_pkt_frag(struct device *dev, - struct ipath_user_sdma_queue *pq, - struct ipath_user_sdma_pkt *pkt, - int frag) -{ - const int i = frag; - - if (pkt->addr[i].page) { - if (pkt->addr[i].dma_mapped) - dma_unmap_page(dev, - pkt->addr[i].addr, - pkt->addr[i].length, - DMA_TO_DEVICE); - - if (pkt->addr[i].kvaddr) - kunmap(pkt->addr[i].page); - - if (pkt->addr[i].put_page) - put_page(pkt->addr[i].page); - else - __free_page(pkt->addr[i].page); - } else if (pkt->addr[i].kvaddr) - /* free coherent mem from cache... */ - dma_pool_free(pq->header_cache, - pkt->addr[i].kvaddr, pkt->addr[i].addr); -} - -/* return number of pages pinned... */ -static int ipath_user_sdma_pin_pages(const struct ipath_devdata *dd, - struct ipath_user_sdma_pkt *pkt, - unsigned long addr, int tlen, int npages) -{ - struct page *pages[2]; - int j; - int ret; - - ret = get_user_pages_fast(addr, npages, 0, pages); - if (ret != npages) { - int i; - - for (i = 0; i < ret; i++) - put_page(pages[i]); - - ret = -ENOMEM; - goto done; - } - - for (j = 0; j < npages; j++) { - /* map the pages... */ - const int flen = - ipath_user_sdma_page_length(addr, tlen); - dma_addr_t dma_addr = - dma_map_page(&dd->pcidev->dev, - pages[j], 0, flen, DMA_TO_DEVICE); - unsigned long fofs = offset_in_page(addr); - - if (dma_mapping_error(&dd->pcidev->dev, dma_addr)) { - ret = -ENOMEM; - goto done; - } - - ipath_user_sdma_init_frag(pkt, pkt->naddr, fofs, flen, 1, 1, - pages[j], kmap(pages[j]), - dma_addr); - - pkt->naddr++; - addr += flen; - tlen -= flen; - } - -done: - return ret; -} - -static int ipath_user_sdma_pin_pkt(const struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - struct ipath_user_sdma_pkt *pkt, - const struct iovec *iov, - unsigned long niov) -{ - int ret = 0; - unsigned long idx; - - for (idx = 0; idx < niov; idx++) { - const int npages = ipath_user_sdma_num_pages(iov + idx); - const unsigned long addr = (unsigned long) iov[idx].iov_base; - - ret = ipath_user_sdma_pin_pages(dd, pkt, - addr, iov[idx].iov_len, - npages); - if (ret < 0) - goto free_pkt; - } - - goto done; - -free_pkt: - for (idx = 0; idx < pkt->naddr; idx++) - ipath_user_sdma_free_pkt_frag(&dd->pcidev->dev, pq, pkt, idx); - -done: - return ret; -} - -static int ipath_user_sdma_init_payload(const struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - struct ipath_user_sdma_pkt *pkt, - const struct iovec *iov, - unsigned long niov, int npages) -{ - int ret = 0; - - if (npages >= ARRAY_SIZE(pkt->addr)) - ret = ipath_user_sdma_coalesce(dd, pkt, iov, niov); - else - ret = ipath_user_sdma_pin_pkt(dd, pq, pkt, iov, niov); - - return ret; -} - -/* free a packet list -- return counter value of last packet */ -static void ipath_user_sdma_free_pkt_list(struct device *dev, - struct ipath_user_sdma_queue *pq, - struct list_head *list) -{ - struct ipath_user_sdma_pkt *pkt, *pkt_next; - - list_for_each_entry_safe(pkt, pkt_next, list, list) { - int i; - - for (i = 0; i < pkt->naddr; i++) - ipath_user_sdma_free_pkt_frag(dev, pq, pkt, i); - - kmem_cache_free(pq->pkt_slab, pkt); - } -} - -/* - * copy headers, coalesce etc -- pq->lock must be held - * - * we queue all the packets to list, returning the - * number of bytes total. list must be empty initially, - * as, if there is an error we clean it... - */ -static int ipath_user_sdma_queue_pkts(const struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - struct list_head *list, - const struct iovec *iov, - unsigned long niov, - int maxpkts) -{ - unsigned long idx = 0; - int ret = 0; - int npkts = 0; - struct page *page = NULL; - __le32 *pbc; - dma_addr_t dma_addr; - struct ipath_user_sdma_pkt *pkt = NULL; - size_t len; - size_t nw; - u32 counter = pq->counter; - int dma_mapped = 0; - - while (idx < niov && npkts < maxpkts) { - const unsigned long addr = (unsigned long) iov[idx].iov_base; - const unsigned long idx_save = idx; - unsigned pktnw; - unsigned pktnwc; - int nfrags = 0; - int npages = 0; - int cfur; - - dma_mapped = 0; - len = iov[idx].iov_len; - nw = len >> 2; - page = NULL; - - pkt = kmem_cache_alloc(pq->pkt_slab, GFP_KERNEL); - if (!pkt) { - ret = -ENOMEM; - goto free_list; - } - - if (len < IPATH_USER_SDMA_MIN_HEADER_LENGTH || - len > PAGE_SIZE || len & 3 || addr & 3) { - ret = -EINVAL; - goto free_pkt; - } - - if (len == IPATH_USER_SDMA_EXP_HEADER_LENGTH) - pbc = dma_pool_alloc(pq->header_cache, GFP_KERNEL, - &dma_addr); - else - pbc = NULL; - - if (!pbc) { - page = alloc_page(GFP_KERNEL); - if (!page) { - ret = -ENOMEM; - goto free_pkt; - } - pbc = kmap(page); - } - - cfur = copy_from_user(pbc, iov[idx].iov_base, len); - if (cfur) { - ret = -EFAULT; - goto free_pbc; - } - - /* - * this assignment is a bit strange. it's because the - * the pbc counts the number of 32 bit words in the full - * packet _except_ the first word of the pbc itself... - */ - pktnwc = nw - 1; - - /* - * pktnw computation yields the number of 32 bit words - * that the caller has indicated in the PBC. note that - * this is one less than the total number of words that - * goes to the send DMA engine as the first 32 bit word - * of the PBC itself is not counted. Armed with this count, - * we can verify that the packet is consistent with the - * iovec lengths. - */ - pktnw = le32_to_cpu(*pbc) & IPATH_PBC_LENGTH_MASK; - if (pktnw < pktnwc || pktnw > pktnwc + (PAGE_SIZE >> 2)) { - ret = -EINVAL; - goto free_pbc; - } - - - idx++; - while (pktnwc < pktnw && idx < niov) { - const size_t slen = iov[idx].iov_len; - const unsigned long faddr = - (unsigned long) iov[idx].iov_base; - - if (slen & 3 || faddr & 3 || !slen || - slen > PAGE_SIZE) { - ret = -EINVAL; - goto free_pbc; - } - - npages++; - if ((faddr & PAGE_MASK) != - ((faddr + slen - 1) & PAGE_MASK)) - npages++; - - pktnwc += slen >> 2; - idx++; - nfrags++; - } - - if (pktnwc != pktnw) { - ret = -EINVAL; - goto free_pbc; - } - - if (page) { - dma_addr = dma_map_page(&dd->pcidev->dev, - page, 0, len, DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, dma_addr)) { - ret = -ENOMEM; - goto free_pbc; - } - - dma_mapped = 1; - } - - ipath_user_sdma_init_header(pkt, counter, 0, len, dma_mapped, - page, pbc, dma_addr); - - if (nfrags) { - ret = ipath_user_sdma_init_payload(dd, pq, pkt, - iov + idx_save + 1, - nfrags, npages); - if (ret < 0) - goto free_pbc_dma; - } - - counter++; - npkts++; - - list_add_tail(&pkt->list, list); - } - - ret = idx; - goto done; - -free_pbc_dma: - if (dma_mapped) - dma_unmap_page(&dd->pcidev->dev, dma_addr, len, DMA_TO_DEVICE); -free_pbc: - if (page) { - kunmap(page); - __free_page(page); - } else - dma_pool_free(pq->header_cache, pbc, dma_addr); -free_pkt: - kmem_cache_free(pq->pkt_slab, pkt); -free_list: - ipath_user_sdma_free_pkt_list(&dd->pcidev->dev, pq, list); -done: - return ret; -} - -static void ipath_user_sdma_set_complete_counter(struct ipath_user_sdma_queue *pq, - u32 c) -{ - pq->sent_counter = c; -} - -/* try to clean out queue -- needs pq->lock */ -static int ipath_user_sdma_queue_clean(const struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq) -{ - struct list_head free_list; - struct ipath_user_sdma_pkt *pkt; - struct ipath_user_sdma_pkt *pkt_prev; - int ret = 0; - - INIT_LIST_HEAD(&free_list); - - list_for_each_entry_safe(pkt, pkt_prev, &pq->sent, list) { - s64 descd = dd->ipath_sdma_descq_removed - pkt->added; - - if (descd < 0) - break; - - list_move_tail(&pkt->list, &free_list); - - /* one more packet cleaned */ - ret++; - } - - if (!list_empty(&free_list)) { - u32 counter; - - pkt = list_entry(free_list.prev, - struct ipath_user_sdma_pkt, list); - counter = pkt->counter; - - ipath_user_sdma_free_pkt_list(&dd->pcidev->dev, pq, &free_list); - ipath_user_sdma_set_complete_counter(pq, counter); - } - - return ret; -} - -void ipath_user_sdma_queue_destroy(struct ipath_user_sdma_queue *pq) -{ - if (!pq) - return; - - kmem_cache_destroy(pq->pkt_slab); - dma_pool_destroy(pq->header_cache); - kfree(pq); -} - -/* clean descriptor queue, returns > 0 if some elements cleaned */ -static int ipath_user_sdma_hwqueue_clean(struct ipath_devdata *dd) -{ - int ret; - unsigned long flags; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - ret = ipath_sdma_make_progress(dd); - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - return ret; -} - -/* we're in close, drain packets so that we can cleanup successfully... */ -void ipath_user_sdma_queue_drain(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq) -{ - int i; - - if (!pq) - return; - - for (i = 0; i < 100; i++) { - mutex_lock(&pq->lock); - if (list_empty(&pq->sent)) { - mutex_unlock(&pq->lock); - break; - } - ipath_user_sdma_hwqueue_clean(dd); - ipath_user_sdma_queue_clean(dd, pq); - mutex_unlock(&pq->lock); - msleep(10); - } - - if (!list_empty(&pq->sent)) { - struct list_head free_list; - - printk(KERN_INFO "drain: lists not empty: forcing!\n"); - INIT_LIST_HEAD(&free_list); - mutex_lock(&pq->lock); - list_splice_init(&pq->sent, &free_list); - ipath_user_sdma_free_pkt_list(&dd->pcidev->dev, pq, &free_list); - mutex_unlock(&pq->lock); - } -} - -static inline __le64 ipath_sdma_make_desc0(struct ipath_devdata *dd, - u64 addr, u64 dwlen, u64 dwoffset) -{ - return cpu_to_le64(/* SDmaPhyAddr[31:0] */ - ((addr & 0xfffffffcULL) << 32) | - /* SDmaGeneration[1:0] */ - ((dd->ipath_sdma_generation & 3ULL) << 30) | - /* SDmaDwordCount[10:0] */ - ((dwlen & 0x7ffULL) << 16) | - /* SDmaBufOffset[12:2] */ - (dwoffset & 0x7ffULL)); -} - -static inline __le64 ipath_sdma_make_first_desc0(__le64 descq) -{ - return descq | cpu_to_le64(1ULL << 12); -} - -static inline __le64 ipath_sdma_make_last_desc0(__le64 descq) -{ - /* last */ /* dma head */ - return descq | cpu_to_le64(1ULL << 11 | 1ULL << 13); -} - -static inline __le64 ipath_sdma_make_desc1(u64 addr) -{ - /* SDmaPhyAddr[47:32] */ - return cpu_to_le64(addr >> 32); -} - -static void ipath_user_sdma_send_frag(struct ipath_devdata *dd, - struct ipath_user_sdma_pkt *pkt, int idx, - unsigned ofs, u16 tail) -{ - const u64 addr = (u64) pkt->addr[idx].addr + - (u64) pkt->addr[idx].offset; - const u64 dwlen = (u64) pkt->addr[idx].length / 4; - __le64 *descqp; - __le64 descq0; - - descqp = &dd->ipath_sdma_descq[tail].qw[0]; - - descq0 = ipath_sdma_make_desc0(dd, addr, dwlen, ofs); - if (idx == 0) - descq0 = ipath_sdma_make_first_desc0(descq0); - if (idx == pkt->naddr - 1) - descq0 = ipath_sdma_make_last_desc0(descq0); - - descqp[0] = descq0; - descqp[1] = ipath_sdma_make_desc1(addr); -} - -/* pq->lock must be held, get packets on the wire... */ -static int ipath_user_sdma_push_pkts(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - struct list_head *pktlist) -{ - int ret = 0; - unsigned long flags; - u16 tail; - - if (list_empty(pktlist)) - return 0; - - if (unlikely(!(dd->ipath_flags & IPATH_LINKACTIVE))) - return -ECOMM; - - spin_lock_irqsave(&dd->ipath_sdma_lock, flags); - - if (unlikely(dd->ipath_sdma_status & IPATH_SDMA_ABORT_MASK)) { - ret = -ECOMM; - goto unlock; - } - - tail = dd->ipath_sdma_descq_tail; - while (!list_empty(pktlist)) { - struct ipath_user_sdma_pkt *pkt = - list_entry(pktlist->next, struct ipath_user_sdma_pkt, - list); - int i; - unsigned ofs = 0; - u16 dtail = tail; - - if (pkt->naddr > ipath_sdma_descq_freecnt(dd)) - goto unlock_check_tail; - - for (i = 0; i < pkt->naddr; i++) { - ipath_user_sdma_send_frag(dd, pkt, i, ofs, tail); - ofs += pkt->addr[i].length >> 2; - - if (++tail == dd->ipath_sdma_descq_cnt) { - tail = 0; - ++dd->ipath_sdma_generation; - } - } - - if ((ofs<<2) > dd->ipath_ibmaxlen) { - ipath_dbg("packet size %X > ibmax %X, fail\n", - ofs<<2, dd->ipath_ibmaxlen); - ret = -EMSGSIZE; - goto unlock; - } - - /* - * if the packet is >= 2KB mtu equivalent, we have to use - * the large buffers, and have to mark each descriptor as - * part of a large buffer packet. - */ - if (ofs >= IPATH_SMALLBUF_DWORDS) { - for (i = 0; i < pkt->naddr; i++) { - dd->ipath_sdma_descq[dtail].qw[0] |= - cpu_to_le64(1ULL << 14); - if (++dtail == dd->ipath_sdma_descq_cnt) - dtail = 0; - } - } - - dd->ipath_sdma_descq_added += pkt->naddr; - pkt->added = dd->ipath_sdma_descq_added; - list_move_tail(&pkt->list, &pq->sent); - ret++; - } - -unlock_check_tail: - /* advance the tail on the chip if necessary */ - if (dd->ipath_sdma_descq_tail != tail) { - wmb(); - ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmatail, tail); - dd->ipath_sdma_descq_tail = tail; - } - -unlock: - spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); - - return ret; -} - -int ipath_user_sdma_writev(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - const struct iovec *iov, - unsigned long dim) -{ - int ret = 0; - struct list_head list; - int npkts = 0; - - INIT_LIST_HEAD(&list); - - mutex_lock(&pq->lock); - - if (dd->ipath_sdma_descq_added != dd->ipath_sdma_descq_removed) { - ipath_user_sdma_hwqueue_clean(dd); - ipath_user_sdma_queue_clean(dd, pq); - } - - while (dim) { - const int mxp = 8; - - ret = ipath_user_sdma_queue_pkts(dd, pq, &list, iov, dim, mxp); - if (ret <= 0) - goto done_unlock; - else { - dim -= ret; - iov += ret; - } - - /* force packets onto the sdma hw queue... */ - if (!list_empty(&list)) { - /* - * lazily clean hw queue. the 4 is a guess of about - * how many sdma descriptors a packet will take (it - * doesn't have to be perfect). - */ - if (ipath_sdma_descq_freecnt(dd) < ret * 4) { - ipath_user_sdma_hwqueue_clean(dd); - ipath_user_sdma_queue_clean(dd, pq); - } - - ret = ipath_user_sdma_push_pkts(dd, pq, &list); - if (ret < 0) - goto done_unlock; - else { - npkts += ret; - pq->counter += ret; - - if (!list_empty(&list)) - goto done_unlock; - } - } - } - -done_unlock: - if (!list_empty(&list)) - ipath_user_sdma_free_pkt_list(&dd->pcidev->dev, pq, &list); - mutex_unlock(&pq->lock); - - return (ret < 0) ? ret : npkts; -} - -int ipath_user_sdma_make_progress(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq) -{ - int ret = 0; - - mutex_lock(&pq->lock); - ipath_user_sdma_hwqueue_clean(dd); - ret = ipath_user_sdma_queue_clean(dd, pq); - mutex_unlock(&pq->lock); - - return ret; -} - -u32 ipath_user_sdma_complete_counter(const struct ipath_user_sdma_queue *pq) -{ - return pq->sent_counter; -} - -u32 ipath_user_sdma_inflight_counter(struct ipath_user_sdma_queue *pq) -{ - return pq->counter; -} - diff --git a/drivers/staging/rdma/ipath/ipath_user_sdma.h b/drivers/staging/rdma/ipath/ipath_user_sdma.h deleted file mode 100644 index fc76316c4a58..000000000000 --- a/drivers/staging/rdma/ipath/ipath_user_sdma.h +++ /dev/null @@ -1,52 +0,0 @@ -/* - * Copyright (c) 2007, 2008 QLogic Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include - -struct ipath_user_sdma_queue; - -struct ipath_user_sdma_queue * -ipath_user_sdma_queue_create(struct device *dev, int unit, int port, int sport); -void ipath_user_sdma_queue_destroy(struct ipath_user_sdma_queue *pq); - -int ipath_user_sdma_writev(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq, - const struct iovec *iov, - unsigned long dim); - -int ipath_user_sdma_make_progress(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq); - -void ipath_user_sdma_queue_drain(struct ipath_devdata *dd, - struct ipath_user_sdma_queue *pq); - -u32 ipath_user_sdma_complete_counter(const struct ipath_user_sdma_queue *pq); -u32 ipath_user_sdma_inflight_counter(struct ipath_user_sdma_queue *pq); diff --git a/drivers/staging/rdma/ipath/ipath_verbs.c b/drivers/staging/rdma/ipath/ipath_verbs.c deleted file mode 100644 index 53f9dcab180d..000000000000 --- a/drivers/staging/rdma/ipath/ipath_verbs.c +++ /dev/null @@ -1,2376 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" -#include "ipath_verbs.h" -#include "ipath_common.h" - -static unsigned int ib_ipath_qp_table_size = 251; -module_param_named(qp_table_size, ib_ipath_qp_table_size, uint, S_IRUGO); -MODULE_PARM_DESC(qp_table_size, "QP table size"); - -unsigned int ib_ipath_lkey_table_size = 12; -module_param_named(lkey_table_size, ib_ipath_lkey_table_size, uint, - S_IRUGO); -MODULE_PARM_DESC(lkey_table_size, - "LKEY table size in bits (2^n, 1 <= n <= 23)"); - -static unsigned int ib_ipath_max_pds = 0xFFFF; -module_param_named(max_pds, ib_ipath_max_pds, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_pds, - "Maximum number of protection domains to support"); - -static unsigned int ib_ipath_max_ahs = 0xFFFF; -module_param_named(max_ahs, ib_ipath_max_ahs, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support"); - -unsigned int ib_ipath_max_cqes = 0x2FFFF; -module_param_named(max_cqes, ib_ipath_max_cqes, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_cqes, - "Maximum number of completion queue entries to support"); - -unsigned int ib_ipath_max_cqs = 0x1FFFF; -module_param_named(max_cqs, ib_ipath_max_cqs, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support"); - -unsigned int ib_ipath_max_qp_wrs = 0x3FFF; -module_param_named(max_qp_wrs, ib_ipath_max_qp_wrs, uint, - S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support"); - -unsigned int ib_ipath_max_qps = 16384; -module_param_named(max_qps, ib_ipath_max_qps, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support"); - -unsigned int ib_ipath_max_sges = 0x60; -module_param_named(max_sges, ib_ipath_max_sges, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support"); - -unsigned int ib_ipath_max_mcast_grps = 16384; -module_param_named(max_mcast_grps, ib_ipath_max_mcast_grps, uint, - S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_mcast_grps, - "Maximum number of multicast groups to support"); - -unsigned int ib_ipath_max_mcast_qp_attached = 16; -module_param_named(max_mcast_qp_attached, ib_ipath_max_mcast_qp_attached, - uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_mcast_qp_attached, - "Maximum number of attached QPs to support"); - -unsigned int ib_ipath_max_srqs = 1024; -module_param_named(max_srqs, ib_ipath_max_srqs, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support"); - -unsigned int ib_ipath_max_srq_sges = 128; -module_param_named(max_srq_sges, ib_ipath_max_srq_sges, - uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support"); - -unsigned int ib_ipath_max_srq_wrs = 0x1FFFF; -module_param_named(max_srq_wrs, ib_ipath_max_srq_wrs, - uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support"); - -static unsigned int ib_ipath_disable_sma; -module_param_named(disable_sma, ib_ipath_disable_sma, uint, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(disable_sma, "Disable the SMA"); - -/* - * Note that it is OK to post send work requests in the SQE and ERR - * states; ipath_do_send() will process them and generate error - * completions as per IB 1.2 C10-96. - */ -const int ib_ipath_state_ops[IB_QPS_ERR + 1] = { - [IB_QPS_RESET] = 0, - [IB_QPS_INIT] = IPATH_POST_RECV_OK, - [IB_QPS_RTR] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK, - [IB_QPS_RTS] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | - IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK | - IPATH_PROCESS_NEXT_SEND_OK, - [IB_QPS_SQD] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | - IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK, - [IB_QPS_SQE] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | - IPATH_POST_SEND_OK | IPATH_FLUSH_SEND, - [IB_QPS_ERR] = IPATH_POST_RECV_OK | IPATH_FLUSH_RECV | - IPATH_POST_SEND_OK | IPATH_FLUSH_SEND, -}; - -struct ipath_ucontext { - struct ib_ucontext ibucontext; -}; - -static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext - *ibucontext) -{ - return container_of(ibucontext, struct ipath_ucontext, ibucontext); -} - -/* - * Translate ib_wr_opcode into ib_wc_opcode. - */ -const enum ib_wc_opcode ib_ipath_wc_opcode[] = { - [IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE, - [IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE, - [IB_WR_SEND] = IB_WC_SEND, - [IB_WR_SEND_WITH_IMM] = IB_WC_SEND, - [IB_WR_RDMA_READ] = IB_WC_RDMA_READ, - [IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP, - [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD -}; - -/* - * System image GUID. - */ -static __be64 sys_image_guid; - -/** - * ipath_copy_sge - copy data to SGE memory - * @ss: the SGE state - * @data: the data to copy - * @length: the length of the data - */ -void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length) -{ - struct ipath_sge *sge = &ss->sge; - - while (length) { - u32 len = sge->length; - - if (len > length) - len = length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - memcpy(sge->vaddr, data, len); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - data += len; - length -= len; - } -} - -/** - * ipath_skip_sge - skip over SGE memory - XXX almost dup of prev func - * @ss: the SGE state - * @length: the number of bytes to skip - */ -void ipath_skip_sge(struct ipath_sge_state *ss, u32 length) -{ - struct ipath_sge *sge = &ss->sge; - - while (length) { - u32 len = sge->length; - - if (len > length) - len = length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - length -= len; - } -} - -/* - * Count the number of DMA descriptors needed to send length bytes of data. - * Don't modify the ipath_sge_state to get the count. - * Return zero if any of the segments is not aligned. - */ -static u32 ipath_count_sge(struct ipath_sge_state *ss, u32 length) -{ - struct ipath_sge *sg_list = ss->sg_list; - struct ipath_sge sge = ss->sge; - u8 num_sge = ss->num_sge; - u32 ndesc = 1; /* count the header */ - - while (length) { - u32 len = sge.length; - - if (len > length) - len = length; - if (len > sge.sge_length) - len = sge.sge_length; - BUG_ON(len == 0); - if (((long) sge.vaddr & (sizeof(u32) - 1)) || - (len != length && (len & (sizeof(u32) - 1)))) { - ndesc = 0; - break; - } - ndesc++; - sge.vaddr += len; - sge.length -= len; - sge.sge_length -= len; - if (sge.sge_length == 0) { - if (--num_sge) - sge = *sg_list++; - } else if (sge.length == 0 && sge.mr != NULL) { - if (++sge.n >= IPATH_SEGSZ) { - if (++sge.m >= sge.mr->mapsz) - break; - sge.n = 0; - } - sge.vaddr = - sge.mr->map[sge.m]->segs[sge.n].vaddr; - sge.length = - sge.mr->map[sge.m]->segs[sge.n].length; - } - length -= len; - } - return ndesc; -} - -/* - * Copy from the SGEs to the data buffer. - */ -static void ipath_copy_from_sge(void *data, struct ipath_sge_state *ss, - u32 length) -{ - struct ipath_sge *sge = &ss->sge; - - while (length) { - u32 len = sge->length; - - if (len > length) - len = length; - if (len > sge->sge_length) - len = sge->sge_length; - BUG_ON(len == 0); - memcpy(data, sge->vaddr, len); - sge->vaddr += len; - sge->length -= len; - sge->sge_length -= len; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - break; - sge->n = 0; - } - sge->vaddr = - sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = - sge->mr->map[sge->m]->segs[sge->n].length; - } - data += len; - length -= len; - } -} - -/** - * ipath_post_one_send - post one RC, UC, or UD send work request - * @qp: the QP to post on - * @wr: the work request to send - */ -static int ipath_post_one_send(struct ipath_qp *qp, struct ib_send_wr *wr) -{ - struct ipath_swqe *wqe; - u32 next; - int i; - int j; - int acc; - int ret; - unsigned long flags; - struct ipath_devdata *dd = to_idev(qp->ibqp.device)->dd; - - spin_lock_irqsave(&qp->s_lock, flags); - - if (qp->ibqp.qp_type != IB_QPT_SMI && - !(dd->ipath_flags & IPATH_LINKACTIVE)) { - ret = -ENETDOWN; - goto bail; - } - - /* Check that state is OK to post send. */ - if (unlikely(!(ib_ipath_state_ops[qp->state] & IPATH_POST_SEND_OK))) - goto bail_inval; - - /* IB spec says that num_sge == 0 is OK. */ - if (wr->num_sge > qp->s_max_sge) - goto bail_inval; - - /* - * Don't allow RDMA reads or atomic operations on UC or - * undefined operations. - * Make sure buffer is large enough to hold the result for atomics. - */ - if (qp->ibqp.qp_type == IB_QPT_UC) { - if ((unsigned) wr->opcode >= IB_WR_RDMA_READ) - goto bail_inval; - } else if (qp->ibqp.qp_type == IB_QPT_UD) { - /* Check UD opcode */ - if (wr->opcode != IB_WR_SEND && - wr->opcode != IB_WR_SEND_WITH_IMM) - goto bail_inval; - /* Check UD destination address PD */ - if (qp->ibqp.pd != ud_wr(wr)->ah->pd) - goto bail_inval; - } else if ((unsigned) wr->opcode > IB_WR_ATOMIC_FETCH_AND_ADD) - goto bail_inval; - else if (wr->opcode >= IB_WR_ATOMIC_CMP_AND_SWP && - (wr->num_sge == 0 || - wr->sg_list[0].length < sizeof(u64) || - wr->sg_list[0].addr & (sizeof(u64) - 1))) - goto bail_inval; - else if (wr->opcode >= IB_WR_RDMA_READ && !qp->s_max_rd_atomic) - goto bail_inval; - - next = qp->s_head + 1; - if (next >= qp->s_size) - next = 0; - if (next == qp->s_last) { - ret = -ENOMEM; - goto bail; - } - - wqe = get_swqe_ptr(qp, qp->s_head); - - if (qp->ibqp.qp_type != IB_QPT_UC && - qp->ibqp.qp_type != IB_QPT_RC) - memcpy(&wqe->ud_wr, ud_wr(wr), sizeof(wqe->ud_wr)); - else if (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || - wr->opcode == IB_WR_RDMA_WRITE || - wr->opcode == IB_WR_RDMA_READ) - memcpy(&wqe->rdma_wr, rdma_wr(wr), sizeof(wqe->rdma_wr)); - else if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || - wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) - memcpy(&wqe->atomic_wr, atomic_wr(wr), sizeof(wqe->atomic_wr)); - else - memcpy(&wqe->wr, wr, sizeof(wqe->wr)); - - wqe->length = 0; - if (wr->num_sge) { - acc = wr->opcode >= IB_WR_RDMA_READ ? - IB_ACCESS_LOCAL_WRITE : 0; - for (i = 0, j = 0; i < wr->num_sge; i++) { - u32 length = wr->sg_list[i].length; - int ok; - - if (length == 0) - continue; - ok = ipath_lkey_ok(qp, &wqe->sg_list[j], - &wr->sg_list[i], acc); - if (!ok) - goto bail_inval; - wqe->length += length; - j++; - } - wqe->wr.num_sge = j; - } - if (qp->ibqp.qp_type == IB_QPT_UC || - qp->ibqp.qp_type == IB_QPT_RC) { - if (wqe->length > 0x80000000U) - goto bail_inval; - } else if (wqe->length > to_idev(qp->ibqp.device)->dd->ipath_ibmtu) - goto bail_inval; - wqe->ssn = qp->s_ssn++; - qp->s_head = next; - - ret = 0; - goto bail; - -bail_inval: - ret = -EINVAL; -bail: - spin_unlock_irqrestore(&qp->s_lock, flags); - return ret; -} - -/** - * ipath_post_send - post a send on a QP - * @ibqp: the QP to post the send on - * @wr: the list of work requests to post - * @bad_wr: the first bad WR is put here - * - * This may be called from interrupt context. - */ -static int ipath_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, - struct ib_send_wr **bad_wr) -{ - struct ipath_qp *qp = to_iqp(ibqp); - int err = 0; - - for (; wr; wr = wr->next) { - err = ipath_post_one_send(qp, wr); - if (err) { - *bad_wr = wr; - goto bail; - } - } - - /* Try to do the send work in the caller's context. */ - ipath_do_send((unsigned long) qp); - -bail: - return err; -} - -/** - * ipath_post_receive - post a receive on a QP - * @ibqp: the QP to post the receive on - * @wr: the WR to post - * @bad_wr: the first bad WR is put here - * - * This may be called from interrupt context. - */ -static int ipath_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, - struct ib_recv_wr **bad_wr) -{ - struct ipath_qp *qp = to_iqp(ibqp); - struct ipath_rwq *wq = qp->r_rq.wq; - unsigned long flags; - int ret; - - /* Check that state is OK to post receive. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_POST_RECV_OK) || !wq) { - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - - for (; wr; wr = wr->next) { - struct ipath_rwqe *wqe; - u32 next; - int i; - - if ((unsigned) wr->num_sge > qp->r_rq.max_sge) { - *bad_wr = wr; - ret = -EINVAL; - goto bail; - } - - spin_lock_irqsave(&qp->r_rq.lock, flags); - next = wq->head + 1; - if (next >= qp->r_rq.size) - next = 0; - if (next == wq->tail) { - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - *bad_wr = wr; - ret = -ENOMEM; - goto bail; - } - - wqe = get_rwqe_ptr(&qp->r_rq, wq->head); - wqe->wr_id = wr->wr_id; - wqe->num_sge = wr->num_sge; - for (i = 0; i < wr->num_sge; i++) - wqe->sg_list[i] = wr->sg_list[i]; - /* Make sure queue entry is written before the head index. */ - smp_wmb(); - wq->head = next; - spin_unlock_irqrestore(&qp->r_rq.lock, flags); - } - ret = 0; - -bail: - return ret; -} - -/** - * ipath_qp_rcv - processing an incoming packet on a QP - * @dev: the device the packet came on - * @hdr: the packet header - * @has_grh: true if the packet has a GRH - * @data: the packet data - * @tlen: the packet length - * @qp: the QP the packet came on - * - * This is called from ipath_ib_rcv() to process an incoming packet - * for the given QP. - * Called at interrupt level. - */ -static void ipath_qp_rcv(struct ipath_ibdev *dev, - struct ipath_ib_header *hdr, int has_grh, - void *data, u32 tlen, struct ipath_qp *qp) -{ - /* Check for valid receive state. */ - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { - dev->n_pkt_drops++; - return; - } - - switch (qp->ibqp.qp_type) { - case IB_QPT_SMI: - case IB_QPT_GSI: - if (ib_ipath_disable_sma) - break; - /* FALLTHROUGH */ - case IB_QPT_UD: - ipath_ud_rcv(dev, hdr, has_grh, data, tlen, qp); - break; - - case IB_QPT_RC: - ipath_rc_rcv(dev, hdr, has_grh, data, tlen, qp); - break; - - case IB_QPT_UC: - ipath_uc_rcv(dev, hdr, has_grh, data, tlen, qp); - break; - - default: - break; - } -} - -/** - * ipath_ib_rcv - process an incoming packet - * @arg: the device pointer - * @rhdr: the header of the packet - * @data: the packet data - * @tlen: the packet length - * - * This is called from ipath_kreceive() to process an incoming packet at - * interrupt level. Tlen is the length of the header + data + CRC in bytes. - */ -void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, - u32 tlen) -{ - struct ipath_ib_header *hdr = rhdr; - struct ipath_other_headers *ohdr; - struct ipath_qp *qp; - u32 qp_num; - int lnh; - u8 opcode; - u16 lid; - - if (unlikely(dev == NULL)) - goto bail; - - if (unlikely(tlen < 24)) { /* LRH+BTH+CRC */ - dev->rcv_errors++; - goto bail; - } - - /* Check for a valid destination LID (see ch. 7.11.1). */ - lid = be16_to_cpu(hdr->lrh[1]); - if (lid < IPATH_MULTICAST_LID_BASE) { - lid &= ~((1 << dev->dd->ipath_lmc) - 1); - if (unlikely(lid != dev->dd->ipath_lid)) { - dev->rcv_errors++; - goto bail; - } - } - - /* Check for GRH */ - lnh = be16_to_cpu(hdr->lrh[0]) & 3; - if (lnh == IPATH_LRH_BTH) - ohdr = &hdr->u.oth; - else if (lnh == IPATH_LRH_GRH) - ohdr = &hdr->u.l.oth; - else { - dev->rcv_errors++; - goto bail; - } - - opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f; - dev->opstats[opcode].n_bytes += tlen; - dev->opstats[opcode].n_packets++; - - /* Get the destination QP number. */ - qp_num = be32_to_cpu(ohdr->bth[1]) & IPATH_QPN_MASK; - if (qp_num == IPATH_MULTICAST_QPN) { - struct ipath_mcast *mcast; - struct ipath_mcast_qp *p; - - if (lnh != IPATH_LRH_GRH) { - dev->n_pkt_drops++; - goto bail; - } - mcast = ipath_mcast_find(&hdr->u.l.grh.dgid); - if (mcast == NULL) { - dev->n_pkt_drops++; - goto bail; - } - dev->n_multicast_rcv++; - list_for_each_entry_rcu(p, &mcast->qp_list, list) - ipath_qp_rcv(dev, hdr, 1, data, tlen, p->qp); - /* - * Notify ipath_multicast_detach() if it is waiting for us - * to finish. - */ - if (atomic_dec_return(&mcast->refcount) <= 1) - wake_up(&mcast->wait); - } else { - qp = ipath_lookup_qpn(&dev->qp_table, qp_num); - if (qp) { - dev->n_unicast_rcv++; - ipath_qp_rcv(dev, hdr, lnh == IPATH_LRH_GRH, data, - tlen, qp); - /* - * Notify ipath_destroy_qp() if it is waiting - * for us to finish. - */ - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - } else - dev->n_pkt_drops++; - } - -bail:; -} - -/** - * ipath_ib_timer - verbs timer - * @arg: the device pointer - * - * This is called from ipath_do_rcv_timer() at interrupt level to check for - * QPs which need retransmits and to collect performance numbers. - */ -static void ipath_ib_timer(struct ipath_ibdev *dev) -{ - struct ipath_qp *resend = NULL; - struct ipath_qp *rnr = NULL; - struct list_head *last; - struct ipath_qp *qp; - unsigned long flags; - - if (dev == NULL) - return; - - spin_lock_irqsave(&dev->pending_lock, flags); - /* Start filling the next pending queue. */ - if (++dev->pending_index >= ARRAY_SIZE(dev->pending)) - dev->pending_index = 0; - /* Save any requests still in the new queue, they have timed out. */ - last = &dev->pending[dev->pending_index]; - while (!list_empty(last)) { - qp = list_entry(last->next, struct ipath_qp, timerwait); - list_del_init(&qp->timerwait); - qp->timer_next = resend; - resend = qp; - atomic_inc(&qp->refcount); - } - last = &dev->rnrwait; - if (!list_empty(last)) { - qp = list_entry(last->next, struct ipath_qp, timerwait); - if (--qp->s_rnr_timeout == 0) { - do { - list_del_init(&qp->timerwait); - qp->timer_next = rnr; - rnr = qp; - atomic_inc(&qp->refcount); - if (list_empty(last)) - break; - qp = list_entry(last->next, struct ipath_qp, - timerwait); - } while (qp->s_rnr_timeout == 0); - } - } - /* - * We should only be in the started state if pma_sample_start != 0 - */ - if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_STARTED && - --dev->pma_sample_start == 0) { - dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_RUNNING; - ipath_snapshot_counters(dev->dd, &dev->ipath_sword, - &dev->ipath_rword, - &dev->ipath_spkts, - &dev->ipath_rpkts, - &dev->ipath_xmit_wait); - } - if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_RUNNING) { - if (dev->pma_sample_interval == 0) { - u64 ta, tb, tc, td, te; - - dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_DONE; - ipath_snapshot_counters(dev->dd, &ta, &tb, - &tc, &td, &te); - - dev->ipath_sword = ta - dev->ipath_sword; - dev->ipath_rword = tb - dev->ipath_rword; - dev->ipath_spkts = tc - dev->ipath_spkts; - dev->ipath_rpkts = td - dev->ipath_rpkts; - dev->ipath_xmit_wait = te - dev->ipath_xmit_wait; - } else { - dev->pma_sample_interval--; - } - } - spin_unlock_irqrestore(&dev->pending_lock, flags); - - /* XXX What if timer fires again while this is running? */ - while (resend != NULL) { - qp = resend; - resend = qp->timer_next; - - spin_lock_irqsave(&qp->s_lock, flags); - if (qp->s_last != qp->s_tail && - ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) { - dev->n_timeouts++; - ipath_restart_rc(qp, qp->s_last_psn + 1); - } - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Notify ipath_destroy_qp() if it is waiting. */ - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - } - while (rnr != NULL) { - qp = rnr; - rnr = qp->timer_next; - - spin_lock_irqsave(&qp->s_lock, flags); - if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) - ipath_schedule_send(qp); - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Notify ipath_destroy_qp() if it is waiting. */ - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - } -} - -static void update_sge(struct ipath_sge_state *ss, u32 length) -{ - struct ipath_sge *sge = &ss->sge; - - sge->vaddr += length; - sge->length -= length; - sge->sge_length -= length; - if (sge->sge_length == 0) { - if (--ss->num_sge) - *sge = *ss->sg_list++; - } else if (sge->length == 0 && sge->mr != NULL) { - if (++sge->n >= IPATH_SEGSZ) { - if (++sge->m >= sge->mr->mapsz) - return; - sge->n = 0; - } - sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr; - sge->length = sge->mr->map[sge->m]->segs[sge->n].length; - } -} - -#ifdef __LITTLE_ENDIAN -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data <<= ((sizeof(u32) - n) * BITS_PER_BYTE); - data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#else -static inline u32 get_upper_bits(u32 data, u32 shift) -{ - return data << shift; -} - -static inline u32 set_upper_bits(u32 data, u32 shift) -{ - return data >> shift; -} - -static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) -{ - data >>= ((sizeof(u32) - n) * BITS_PER_BYTE); - data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE); - return data; -} -#endif - -static void copy_io(u32 __iomem *piobuf, struct ipath_sge_state *ss, - u32 length, unsigned flush_wc) -{ - u32 extra = 0; - u32 data = 0; - u32 last; - - while (1) { - u32 len = ss->sge.length; - u32 off; - - if (len > length) - len = length; - if (len > ss->sge.sge_length) - len = ss->sge.sge_length; - BUG_ON(len == 0); - /* If the source address is not aligned, try to align it. */ - off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1); - if (off) { - u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr & - ~(sizeof(u32) - 1)); - u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE); - u32 y; - - y = sizeof(u32) - off; - if (len > y) - len = y; - if (len + extra >= sizeof(u32)) { - data |= set_upper_bits(v, extra * - BITS_PER_BYTE); - len = sizeof(u32) - extra; - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, len, extra); - if (len == length) { - last = data; - break; - } - extra += len; - } - } else if (extra) { - /* Source address is aligned. */ - u32 *addr = (u32 *) ss->sge.vaddr; - int shift = extra * BITS_PER_BYTE; - int ushift = 32 - shift; - u32 l = len; - - while (l >= sizeof(u32)) { - u32 v = *addr; - - data |= set_upper_bits(v, shift); - __raw_writel(data, piobuf); - data = get_upper_bits(v, ushift); - piobuf++; - addr++; - l -= sizeof(u32); - } - /* - * We still have 'extra' number of bytes leftover. - */ - if (l) { - u32 v = *addr; - - if (l + extra >= sizeof(u32)) { - data |= set_upper_bits(v, shift); - len -= l + extra - sizeof(u32); - if (len == length) { - last = data; - break; - } - __raw_writel(data, piobuf); - piobuf++; - extra = 0; - data = 0; - } else { - /* Clear unused upper bytes */ - data |= clear_upper_bytes(v, l, - extra); - if (len == length) { - last = data; - break; - } - extra += l; - } - } else if (len == length) { - last = data; - break; - } - } else if (len == length) { - u32 w; - - /* - * Need to round up for the last dword in the - * packet. - */ - w = (len + 3) >> 2; - __iowrite32_copy(piobuf, ss->sge.vaddr, w - 1); - piobuf += w - 1; - last = ((u32 *) ss->sge.vaddr)[w - 1]; - break; - } else { - u32 w = len >> 2; - - __iowrite32_copy(piobuf, ss->sge.vaddr, w); - piobuf += w; - - extra = len & (sizeof(u32) - 1); - if (extra) { - u32 v = ((u32 *) ss->sge.vaddr)[w]; - - /* Clear unused upper bytes */ - data = clear_upper_bytes(v, extra, 0); - } - } - update_sge(ss, len); - length -= len; - } - /* Update address before sending packet. */ - update_sge(ss, length); - if (flush_wc) { - /* must flush early everything before trigger word */ - ipath_flush_wc(); - __raw_writel(last, piobuf); - /* be sure trigger word is written */ - ipath_flush_wc(); - } else - __raw_writel(last, piobuf); -} - -/* - * Convert IB rate to delay multiplier. - */ -unsigned ipath_ib_rate_to_mult(enum ib_rate rate) -{ - switch (rate) { - case IB_RATE_2_5_GBPS: return 8; - case IB_RATE_5_GBPS: return 4; - case IB_RATE_10_GBPS: return 2; - case IB_RATE_20_GBPS: return 1; - default: return 0; - } -} - -/* - * Convert delay multiplier to IB rate - */ -static enum ib_rate ipath_mult_to_ib_rate(unsigned mult) -{ - switch (mult) { - case 8: return IB_RATE_2_5_GBPS; - case 4: return IB_RATE_5_GBPS; - case 2: return IB_RATE_10_GBPS; - case 1: return IB_RATE_20_GBPS; - default: return IB_RATE_PORT_CURRENT; - } -} - -static inline struct ipath_verbs_txreq *get_txreq(struct ipath_ibdev *dev) -{ - struct ipath_verbs_txreq *tx = NULL; - unsigned long flags; - - spin_lock_irqsave(&dev->pending_lock, flags); - if (!list_empty(&dev->txreq_free)) { - struct list_head *l = dev->txreq_free.next; - - list_del(l); - tx = list_entry(l, struct ipath_verbs_txreq, txreq.list); - } - spin_unlock_irqrestore(&dev->pending_lock, flags); - return tx; -} - -static inline void put_txreq(struct ipath_ibdev *dev, - struct ipath_verbs_txreq *tx) -{ - unsigned long flags; - - spin_lock_irqsave(&dev->pending_lock, flags); - list_add(&tx->txreq.list, &dev->txreq_free); - spin_unlock_irqrestore(&dev->pending_lock, flags); -} - -static void sdma_complete(void *cookie, int status) -{ - struct ipath_verbs_txreq *tx = cookie; - struct ipath_qp *qp = tx->qp; - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - unsigned long flags; - enum ib_wc_status ibs = status == IPATH_SDMA_TXREQ_S_OK ? - IB_WC_SUCCESS : IB_WC_WR_FLUSH_ERR; - - if (atomic_dec_and_test(&qp->s_dma_busy)) { - spin_lock_irqsave(&qp->s_lock, flags); - if (tx->wqe) - ipath_send_complete(qp, tx->wqe, ibs); - if ((ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND && - qp->s_last != qp->s_head) || - (qp->s_flags & IPATH_S_WAIT_DMA)) - ipath_schedule_send(qp); - spin_unlock_irqrestore(&qp->s_lock, flags); - wake_up(&qp->wait_dma); - } else if (tx->wqe) { - spin_lock_irqsave(&qp->s_lock, flags); - ipath_send_complete(qp, tx->wqe, ibs); - spin_unlock_irqrestore(&qp->s_lock, flags); - } - - if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_FREEBUF) - kfree(tx->txreq.map_addr); - put_txreq(dev, tx); - - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); -} - -static void decrement_dma_busy(struct ipath_qp *qp) -{ - unsigned long flags; - - if (atomic_dec_and_test(&qp->s_dma_busy)) { - spin_lock_irqsave(&qp->s_lock, flags); - if ((ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND && - qp->s_last != qp->s_head) || - (qp->s_flags & IPATH_S_WAIT_DMA)) - ipath_schedule_send(qp); - spin_unlock_irqrestore(&qp->s_lock, flags); - wake_up(&qp->wait_dma); - } -} - -/* - * Compute the number of clock cycles of delay before sending the next packet. - * The multipliers reflect the number of clocks for the fastest rate so - * one tick at 4xDDR is 8 ticks at 1xSDR. - * If the destination port will take longer to receive a packet than - * the outgoing link can send it, we need to delay sending the next packet - * by the difference in time it takes the receiver to receive and the sender - * to send this packet. - * Note that this delay is always correct for UC and RC but not always - * optimal for UD. For UD, the destination HCA can be different for each - * packet, in which case, we could send packets to a different destination - * while "waiting" for the delay. The overhead for doing this without - * HW support is more than just paying the cost of delaying some packets - * unnecessarily. - */ -static inline unsigned ipath_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult) -{ - return (rcv_mult > snd_mult) ? - (plen * (rcv_mult - snd_mult) + 1) >> 1 : 0; -} - -static int ipath_verbs_send_dma(struct ipath_qp *qp, - struct ipath_ib_header *hdr, u32 hdrwords, - struct ipath_sge_state *ss, u32 len, - u32 plen, u32 dwords) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_devdata *dd = dev->dd; - struct ipath_verbs_txreq *tx; - u32 *piobuf; - u32 control; - u32 ndesc; - int ret; - - tx = qp->s_tx; - if (tx) { - qp->s_tx = NULL; - /* resend previously constructed packet */ - atomic_inc(&qp->s_dma_busy); - ret = ipath_sdma_verbs_send(dd, tx->ss, tx->len, tx); - if (ret) { - qp->s_tx = tx; - decrement_dma_busy(qp); - } - goto bail; - } - - tx = get_txreq(dev); - if (!tx) { - ret = -EBUSY; - goto bail; - } - - /* - * Get the saved delay count we computed for the previous packet - * and save the delay count for this packet to be used next time - * we get here. - */ - control = qp->s_pkt_delay; - qp->s_pkt_delay = ipath_pkt_delay(plen, dd->delay_mult, qp->s_dmult); - - tx->qp = qp; - atomic_inc(&qp->refcount); - tx->wqe = qp->s_wqe; - tx->txreq.callback = sdma_complete; - tx->txreq.callback_cookie = tx; - tx->txreq.flags = IPATH_SDMA_TXREQ_F_HEADTOHOST | - IPATH_SDMA_TXREQ_F_INTREQ | IPATH_SDMA_TXREQ_F_FREEDESC; - if (plen + 1 >= IPATH_SMALLBUF_DWORDS) - tx->txreq.flags |= IPATH_SDMA_TXREQ_F_USELARGEBUF; - - /* VL15 packets bypass credit check */ - if ((be16_to_cpu(hdr->lrh[0]) >> 12) == 15) { - control |= 1ULL << 31; - tx->txreq.flags |= IPATH_SDMA_TXREQ_F_VL15; - } - - if (len) { - /* - * Don't try to DMA if it takes more descriptors than - * the queue holds. - */ - ndesc = ipath_count_sge(ss, len); - if (ndesc >= dd->ipath_sdma_descq_cnt) - ndesc = 0; - } else - ndesc = 1; - if (ndesc) { - tx->hdr.pbc[0] = cpu_to_le32(plen); - tx->hdr.pbc[1] = cpu_to_le32(control); - memcpy(&tx->hdr.hdr, hdr, hdrwords << 2); - tx->txreq.sg_count = ndesc; - tx->map_len = (hdrwords + 2) << 2; - tx->txreq.map_addr = &tx->hdr; - atomic_inc(&qp->s_dma_busy); - ret = ipath_sdma_verbs_send(dd, ss, dwords, tx); - if (ret) { - /* save ss and length in dwords */ - tx->ss = ss; - tx->len = dwords; - qp->s_tx = tx; - decrement_dma_busy(qp); - } - goto bail; - } - - /* Allocate a buffer and copy the header and payload to it. */ - tx->map_len = (plen + 1) << 2; - piobuf = kmalloc(tx->map_len, GFP_ATOMIC); - if (unlikely(piobuf == NULL)) { - ret = -EBUSY; - goto err_tx; - } - tx->txreq.map_addr = piobuf; - tx->txreq.flags |= IPATH_SDMA_TXREQ_F_FREEBUF; - tx->txreq.sg_count = 1; - - *piobuf++ = (__force u32) cpu_to_le32(plen); - *piobuf++ = (__force u32) cpu_to_le32(control); - memcpy(piobuf, hdr, hdrwords << 2); - ipath_copy_from_sge(piobuf + hdrwords, ss, len); - - atomic_inc(&qp->s_dma_busy); - ret = ipath_sdma_verbs_send(dd, NULL, 0, tx); - /* - * If we couldn't queue the DMA request, save the info - * and try again later rather than destroying the - * buffer and undoing the side effects of the copy. - */ - if (ret) { - tx->ss = NULL; - tx->len = 0; - qp->s_tx = tx; - decrement_dma_busy(qp); - } - dev->n_unaligned++; - goto bail; - -err_tx: - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - put_txreq(dev, tx); -bail: - return ret; -} - -static int ipath_verbs_send_pio(struct ipath_qp *qp, - struct ipath_ib_header *ibhdr, u32 hdrwords, - struct ipath_sge_state *ss, u32 len, - u32 plen, u32 dwords) -{ - struct ipath_devdata *dd = to_idev(qp->ibqp.device)->dd; - u32 *hdr = (u32 *) ibhdr; - u32 __iomem *piobuf; - unsigned flush_wc; - u32 control; - int ret; - unsigned long flags; - - piobuf = ipath_getpiobuf(dd, plen, NULL); - if (unlikely(piobuf == NULL)) { - ret = -EBUSY; - goto bail; - } - - /* - * Get the saved delay count we computed for the previous packet - * and save the delay count for this packet to be used next time - * we get here. - */ - control = qp->s_pkt_delay; - qp->s_pkt_delay = ipath_pkt_delay(plen, dd->delay_mult, qp->s_dmult); - - /* VL15 packets bypass credit check */ - if ((be16_to_cpu(ibhdr->lrh[0]) >> 12) == 15) - control |= 1ULL << 31; - - /* - * Write the length to the control qword plus any needed flags. - * We have to flush after the PBC for correctness on some cpus - * or WC buffer can be written out of order. - */ - writeq(((u64) control << 32) | plen, piobuf); - piobuf += 2; - - flush_wc = dd->ipath_flags & IPATH_PIO_FLUSH_WC; - if (len == 0) { - /* - * If there is just the header portion, must flush before - * writing last word of header for correctness, and after - * the last header word (trigger word). - */ - if (flush_wc) { - ipath_flush_wc(); - __iowrite32_copy(piobuf, hdr, hdrwords - 1); - ipath_flush_wc(); - __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1); - ipath_flush_wc(); - } else - __iowrite32_copy(piobuf, hdr, hdrwords); - goto done; - } - - if (flush_wc) - ipath_flush_wc(); - __iowrite32_copy(piobuf, hdr, hdrwords); - piobuf += hdrwords; - - /* The common case is aligned and contained in one segment. */ - if (likely(ss->num_sge == 1 && len <= ss->sge.length && - !((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) { - u32 *addr = (u32 *) ss->sge.vaddr; - - /* Update address before sending packet. */ - update_sge(ss, len); - if (flush_wc) { - __iowrite32_copy(piobuf, addr, dwords - 1); - /* must flush early everything before trigger word */ - ipath_flush_wc(); - __raw_writel(addr[dwords - 1], piobuf + dwords - 1); - /* be sure trigger word is written */ - ipath_flush_wc(); - } else - __iowrite32_copy(piobuf, addr, dwords); - goto done; - } - copy_io(piobuf, ss, len, flush_wc); -done: - if (qp->s_wqe) { - spin_lock_irqsave(&qp->s_lock, flags); - ipath_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS); - spin_unlock_irqrestore(&qp->s_lock, flags); - } - ret = 0; -bail: - return ret; -} - -/** - * ipath_verbs_send - send a packet - * @qp: the QP to send on - * @hdr: the packet header - * @hdrwords: the number of 32-bit words in the header - * @ss: the SGE to send - * @len: the length of the packet in bytes - */ -int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr, - u32 hdrwords, struct ipath_sge_state *ss, u32 len) -{ - struct ipath_devdata *dd = to_idev(qp->ibqp.device)->dd; - u32 plen; - int ret; - u32 dwords = (len + 3) >> 2; - - /* - * Calculate the send buffer trigger address. - * The +1 counts for the pbc control dword following the pbc length. - */ - plen = hdrwords + dwords + 1; - - /* - * VL15 packets (IB_QPT_SMI) will always use PIO, so we - * can defer SDMA restart until link goes ACTIVE without - * worrying about just how we got there. - */ - if (qp->ibqp.qp_type == IB_QPT_SMI || - !(dd->ipath_flags & IPATH_HAS_SEND_DMA)) - ret = ipath_verbs_send_pio(qp, hdr, hdrwords, ss, len, - plen, dwords); - else - ret = ipath_verbs_send_dma(qp, hdr, hdrwords, ss, len, - plen, dwords); - - return ret; -} - -int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords, - u64 *rwords, u64 *spkts, u64 *rpkts, - u64 *xmit_wait) -{ - int ret; - - if (!(dd->ipath_flags & IPATH_INITTED)) { - /* no hardware, freeze, etc. */ - ret = -EINVAL; - goto bail; - } - *swords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); - *rwords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); - *spkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); - *rpkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); - *xmit_wait = ipath_snap_cntr(dd, dd->ipath_cregs->cr_sendstallcnt); - - ret = 0; - -bail: - return ret; -} - -/** - * ipath_get_counters - get various chip counters - * @dd: the infinipath device - * @cntrs: counters are placed here - * - * Return the counters needed by recv_pma_get_portcounters(). - */ -int ipath_get_counters(struct ipath_devdata *dd, - struct ipath_verbs_counters *cntrs) -{ - struct ipath_cregs const *crp = dd->ipath_cregs; - int ret; - - if (!(dd->ipath_flags & IPATH_INITTED)) { - /* no hardware, freeze, etc. */ - ret = -EINVAL; - goto bail; - } - cntrs->symbol_error_counter = - ipath_snap_cntr(dd, crp->cr_ibsymbolerrcnt); - cntrs->link_error_recovery_counter = - ipath_snap_cntr(dd, crp->cr_iblinkerrrecovcnt); - /* - * The link downed counter counts when the other side downs the - * connection. We add in the number of times we downed the link - * due to local link integrity errors to compensate. - */ - cntrs->link_downed_counter = - ipath_snap_cntr(dd, crp->cr_iblinkdowncnt); - cntrs->port_rcv_errors = - ipath_snap_cntr(dd, crp->cr_rxdroppktcnt) + - ipath_snap_cntr(dd, crp->cr_rcvovflcnt) + - ipath_snap_cntr(dd, crp->cr_portovflcnt) + - ipath_snap_cntr(dd, crp->cr_err_rlencnt) + - ipath_snap_cntr(dd, crp->cr_invalidrlencnt) + - ipath_snap_cntr(dd, crp->cr_errlinkcnt) + - ipath_snap_cntr(dd, crp->cr_erricrccnt) + - ipath_snap_cntr(dd, crp->cr_errvcrccnt) + - ipath_snap_cntr(dd, crp->cr_errlpcrccnt) + - ipath_snap_cntr(dd, crp->cr_badformatcnt) + - dd->ipath_rxfc_unsupvl_errs; - if (crp->cr_rxotherlocalphyerrcnt) - cntrs->port_rcv_errors += - ipath_snap_cntr(dd, crp->cr_rxotherlocalphyerrcnt); - if (crp->cr_rxvlerrcnt) - cntrs->port_rcv_errors += - ipath_snap_cntr(dd, crp->cr_rxvlerrcnt); - cntrs->port_rcv_remphys_errors = - ipath_snap_cntr(dd, crp->cr_rcvebpcnt); - cntrs->port_xmit_discards = ipath_snap_cntr(dd, crp->cr_unsupvlcnt); - cntrs->port_xmit_data = ipath_snap_cntr(dd, crp->cr_wordsendcnt); - cntrs->port_rcv_data = ipath_snap_cntr(dd, crp->cr_wordrcvcnt); - cntrs->port_xmit_packets = ipath_snap_cntr(dd, crp->cr_pktsendcnt); - cntrs->port_rcv_packets = ipath_snap_cntr(dd, crp->cr_pktrcvcnt); - cntrs->local_link_integrity_errors = - crp->cr_locallinkintegrityerrcnt ? - ipath_snap_cntr(dd, crp->cr_locallinkintegrityerrcnt) : - ((dd->ipath_flags & IPATH_GPIO_ERRINTRS) ? - dd->ipath_lli_errs : dd->ipath_lli_errors); - cntrs->excessive_buffer_overrun_errors = - crp->cr_excessbufferovflcnt ? - ipath_snap_cntr(dd, crp->cr_excessbufferovflcnt) : - dd->ipath_overrun_thresh_errs; - cntrs->vl15_dropped = crp->cr_vl15droppedpktcnt ? - ipath_snap_cntr(dd, crp->cr_vl15droppedpktcnt) : 0; - - ret = 0; - -bail: - return ret; -} - -/** - * ipath_ib_piobufavail - callback when a PIO buffer is available - * @arg: the device pointer - * - * This is called from ipath_intr() at interrupt level when a PIO buffer is - * available after ipath_verbs_send() returned an error that no buffers were - * available. Return 1 if we consumed all the PIO buffers and we still have - * QPs waiting for buffers (for now, just restart the send tasklet and - * return zero). - */ -int ipath_ib_piobufavail(struct ipath_ibdev *dev) -{ - struct list_head *list; - struct ipath_qp *qplist; - struct ipath_qp *qp; - unsigned long flags; - - if (dev == NULL) - goto bail; - - list = &dev->piowait; - qplist = NULL; - - spin_lock_irqsave(&dev->pending_lock, flags); - while (!list_empty(list)) { - qp = list_entry(list->next, struct ipath_qp, piowait); - list_del_init(&qp->piowait); - qp->pio_next = qplist; - qplist = qp; - atomic_inc(&qp->refcount); - } - spin_unlock_irqrestore(&dev->pending_lock, flags); - - while (qplist != NULL) { - qp = qplist; - qplist = qp->pio_next; - - spin_lock_irqsave(&qp->s_lock, flags); - if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) - ipath_schedule_send(qp); - spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Notify ipath_destroy_qp() if it is waiting. */ - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - } - -bail: - return 0; -} - -static int ipath_query_device(struct ib_device *ibdev, struct ib_device_attr *props, - struct ib_udata *uhw) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - - if (uhw->inlen || uhw->outlen) - return -EINVAL; - - memset(props, 0, sizeof(*props)); - - props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | - IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | - IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | - IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE; - props->page_size_cap = PAGE_SIZE; - props->vendor_id = - IPATH_SRC_OUI_1 << 16 | IPATH_SRC_OUI_2 << 8 | IPATH_SRC_OUI_3; - props->vendor_part_id = dev->dd->ipath_deviceid; - props->hw_ver = dev->dd->ipath_pcirev; - - props->sys_image_guid = dev->sys_image_guid; - - props->max_mr_size = ~0ull; - props->max_qp = ib_ipath_max_qps; - props->max_qp_wr = ib_ipath_max_qp_wrs; - props->max_sge = ib_ipath_max_sges; - props->max_sge_rd = ib_ipath_max_sges; - props->max_cq = ib_ipath_max_cqs; - props->max_ah = ib_ipath_max_ahs; - props->max_cqe = ib_ipath_max_cqes; - props->max_mr = dev->lk_table.max; - props->max_fmr = dev->lk_table.max; - props->max_map_per_fmr = 32767; - props->max_pd = ib_ipath_max_pds; - props->max_qp_rd_atom = IPATH_MAX_RDMA_ATOMIC; - props->max_qp_init_rd_atom = 255; - /* props->max_res_rd_atom */ - props->max_srq = ib_ipath_max_srqs; - props->max_srq_wr = ib_ipath_max_srq_wrs; - props->max_srq_sge = ib_ipath_max_srq_sges; - /* props->local_ca_ack_delay */ - props->atomic_cap = IB_ATOMIC_GLOB; - props->max_pkeys = ipath_get_npkeys(dev->dd); - props->max_mcast_grp = ib_ipath_max_mcast_grps; - props->max_mcast_qp_attach = ib_ipath_max_mcast_qp_attached; - props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * - props->max_mcast_grp; - - return 0; -} - -const u8 ipath_cvt_physportstate[32] = { - [INFINIPATH_IBCS_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED, - [INFINIPATH_IBCS_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP, - [INFINIPATH_IBCS_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL, - [INFINIPATH_IBCS_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL, - [INFINIPATH_IBCS_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP, - [INFINIPATH_IBCS_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP, - [INFINIPATH_IBCS_LT_STATE_CFGDEBOUNCE] = - IB_PHYSPORTSTATE_CFG_TRAIN, - [INFINIPATH_IBCS_LT_STATE_CFGRCVFCFG] = - IB_PHYSPORTSTATE_CFG_TRAIN, - [INFINIPATH_IBCS_LT_STATE_CFGWAITRMT] = - IB_PHYSPORTSTATE_CFG_TRAIN, - [INFINIPATH_IBCS_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_TRAIN, - [INFINIPATH_IBCS_LT_STATE_RECOVERRETRAIN] = - IB_PHYSPORTSTATE_LINK_ERR_RECOVER, - [INFINIPATH_IBCS_LT_STATE_RECOVERWAITRMT] = - IB_PHYSPORTSTATE_LINK_ERR_RECOVER, - [INFINIPATH_IBCS_LT_STATE_RECOVERIDLE] = - IB_PHYSPORTSTATE_LINK_ERR_RECOVER, - [0x10] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x11] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x13] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN, - [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN -}; - -u32 ipath_get_cr_errpkey(struct ipath_devdata *dd) -{ - return ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey); -} - -static int ipath_query_port(struct ib_device *ibdev, - u8 port, struct ib_port_attr *props) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_devdata *dd = dev->dd; - enum ib_mtu mtu; - u16 lid = dd->ipath_lid; - u64 ibcstat; - - memset(props, 0, sizeof(*props)); - props->lid = lid ? lid : be16_to_cpu(IB_LID_PERMISSIVE); - props->lmc = dd->ipath_lmc; - props->sm_lid = dev->sm_lid; - props->sm_sl = dev->sm_sl; - ibcstat = dd->ipath_lastibcstat; - /* map LinkState to IB portinfo values. */ - props->state = ipath_ib_linkstate(dd, ibcstat) + 1; - - /* See phys_state_show() */ - props->phys_state = /* MEA: assumes shift == 0 */ - ipath_cvt_physportstate[dd->ipath_lastibcstat & - dd->ibcs_lts_mask]; - props->port_cap_flags = dev->port_cap_flags; - props->gid_tbl_len = 1; - props->max_msg_sz = 0x80000000; - props->pkey_tbl_len = ipath_get_npkeys(dd); - props->bad_pkey_cntr = ipath_get_cr_errpkey(dd) - - dev->z_pkey_violations; - props->qkey_viol_cntr = dev->qkey_violations; - props->active_width = dd->ipath_link_width_active; - /* See rate_show() */ - props->active_speed = dd->ipath_link_speed_active; - props->max_vl_num = 1; /* VLCap = VL0 */ - props->init_type_reply = 0; - - props->max_mtu = ipath_mtu4096 ? IB_MTU_4096 : IB_MTU_2048; - switch (dd->ipath_ibmtu) { - case 4096: - mtu = IB_MTU_4096; - break; - case 2048: - mtu = IB_MTU_2048; - break; - case 1024: - mtu = IB_MTU_1024; - break; - case 512: - mtu = IB_MTU_512; - break; - case 256: - mtu = IB_MTU_256; - break; - default: - mtu = IB_MTU_2048; - } - props->active_mtu = mtu; - props->subnet_timeout = dev->subnet_timeout; - - return 0; -} - -static int ipath_modify_device(struct ib_device *device, - int device_modify_mask, - struct ib_device_modify *device_modify) -{ - int ret; - - if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID | - IB_DEVICE_MODIFY_NODE_DESC)) { - ret = -EOPNOTSUPP; - goto bail; - } - - if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) - memcpy(device->node_desc, device_modify->node_desc, 64); - - if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) - to_idev(device)->sys_image_guid = - cpu_to_be64(device_modify->sys_image_guid); - - ret = 0; - -bail: - return ret; -} - -static int ipath_modify_port(struct ib_device *ibdev, - u8 port, int port_modify_mask, - struct ib_port_modify *props) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - - dev->port_cap_flags |= props->set_port_cap_mask; - dev->port_cap_flags &= ~props->clr_port_cap_mask; - if (port_modify_mask & IB_PORT_SHUTDOWN) - ipath_set_linkstate(dev->dd, IPATH_IB_LINKDOWN); - if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) - dev->qkey_violations = 0; - return 0; -} - -static int ipath_query_gid(struct ib_device *ibdev, u8 port, - int index, union ib_gid *gid) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - int ret; - - if (index >= 1) { - ret = -EINVAL; - goto bail; - } - gid->global.subnet_prefix = dev->gid_prefix; - gid->global.interface_id = dev->dd->ipath_guid; - - ret = 0; - -bail: - return ret; -} - -static struct ib_pd *ipath_alloc_pd(struct ib_device *ibdev, - struct ib_ucontext *context, - struct ib_udata *udata) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - struct ipath_pd *pd; - struct ib_pd *ret; - - /* - * This is actually totally arbitrary. Some correctness tests - * assume there's a maximum number of PDs that can be allocated. - * We don't actually have this limit, but we fail the test if - * we allow allocations of more than we report for this value. - */ - - pd = kmalloc(sizeof *pd, GFP_KERNEL); - if (!pd) { - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - spin_lock(&dev->n_pds_lock); - if (dev->n_pds_allocated == ib_ipath_max_pds) { - spin_unlock(&dev->n_pds_lock); - kfree(pd); - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - dev->n_pds_allocated++; - spin_unlock(&dev->n_pds_lock); - - /* ib_alloc_pd() will initialize pd->ibpd. */ - pd->user = udata != NULL; - - ret = &pd->ibpd; - -bail: - return ret; -} - -static int ipath_dealloc_pd(struct ib_pd *ibpd) -{ - struct ipath_pd *pd = to_ipd(ibpd); - struct ipath_ibdev *dev = to_idev(ibpd->device); - - spin_lock(&dev->n_pds_lock); - dev->n_pds_allocated--; - spin_unlock(&dev->n_pds_lock); - - kfree(pd); - - return 0; -} - -/** - * ipath_create_ah - create an address handle - * @pd: the protection domain - * @ah_attr: the attributes of the AH - * - * This may be called from interrupt context. - */ -static struct ib_ah *ipath_create_ah(struct ib_pd *pd, - struct ib_ah_attr *ah_attr) -{ - struct ipath_ah *ah; - struct ib_ah *ret; - struct ipath_ibdev *dev = to_idev(pd->device); - unsigned long flags; - - /* A multicast address requires a GRH (see ch. 8.4.1). */ - if (ah_attr->dlid >= IPATH_MULTICAST_LID_BASE && - ah_attr->dlid != IPATH_PERMISSIVE_LID && - !(ah_attr->ah_flags & IB_AH_GRH)) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - if (ah_attr->dlid == 0) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - if (ah_attr->port_num < 1 || - ah_attr->port_num > pd->device->phys_port_cnt) { - ret = ERR_PTR(-EINVAL); - goto bail; - } - - ah = kmalloc(sizeof *ah, GFP_ATOMIC); - if (!ah) { - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - spin_lock_irqsave(&dev->n_ahs_lock, flags); - if (dev->n_ahs_allocated == ib_ipath_max_ahs) { - spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - kfree(ah); - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - dev->n_ahs_allocated++; - spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - - /* ib_create_ah() will initialize ah->ibah. */ - ah->attr = *ah_attr; - ah->attr.static_rate = ipath_ib_rate_to_mult(ah_attr->static_rate); - - ret = &ah->ibah; - -bail: - return ret; -} - -/** - * ipath_destroy_ah - destroy an address handle - * @ibah: the AH to destroy - * - * This may be called from interrupt context. - */ -static int ipath_destroy_ah(struct ib_ah *ibah) -{ - struct ipath_ibdev *dev = to_idev(ibah->device); - struct ipath_ah *ah = to_iah(ibah); - unsigned long flags; - - spin_lock_irqsave(&dev->n_ahs_lock, flags); - dev->n_ahs_allocated--; - spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - - kfree(ah); - - return 0; -} - -static int ipath_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) -{ - struct ipath_ah *ah = to_iah(ibah); - - *ah_attr = ah->attr; - ah_attr->static_rate = ipath_mult_to_ib_rate(ah->attr.static_rate); - - return 0; -} - -/** - * ipath_get_npkeys - return the size of the PKEY table for port 0 - * @dd: the infinipath device - */ -unsigned ipath_get_npkeys(struct ipath_devdata *dd) -{ - return ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys); -} - -/** - * ipath_get_pkey - return the indexed PKEY from the port PKEY table - * @dd: the infinipath device - * @index: the PKEY index - */ -unsigned ipath_get_pkey(struct ipath_devdata *dd, unsigned index) -{ - unsigned ret; - - /* always a kernel port, no locking needed */ - if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys)) - ret = 0; - else - ret = dd->ipath_pd[0]->port_pkeys[index]; - - return ret; -} - -static int ipath_query_pkey(struct ib_device *ibdev, u8 port, u16 index, - u16 *pkey) -{ - struct ipath_ibdev *dev = to_idev(ibdev); - int ret; - - if (index >= ipath_get_npkeys(dev->dd)) { - ret = -EINVAL; - goto bail; - } - - *pkey = ipath_get_pkey(dev->dd, index); - ret = 0; - -bail: - return ret; -} - -/** - * ipath_alloc_ucontext - allocate a ucontest - * @ibdev: the infiniband device - * @udata: not used by the InfiniPath driver - */ - -static struct ib_ucontext *ipath_alloc_ucontext(struct ib_device *ibdev, - struct ib_udata *udata) -{ - struct ipath_ucontext *context; - struct ib_ucontext *ret; - - context = kmalloc(sizeof *context, GFP_KERNEL); - if (!context) { - ret = ERR_PTR(-ENOMEM); - goto bail; - } - - ret = &context->ibucontext; - -bail: - return ret; -} - -static int ipath_dealloc_ucontext(struct ib_ucontext *context) -{ - kfree(to_iucontext(context)); - return 0; -} - -static int ipath_verbs_register_sysfs(struct ib_device *dev); - -static void __verbs_timer(unsigned long arg) -{ - struct ipath_devdata *dd = (struct ipath_devdata *) arg; - - /* Handle verbs layer timeouts. */ - ipath_ib_timer(dd->verbs_dev); - - mod_timer(&dd->verbs_timer, jiffies + 1); -} - -static int enable_timer(struct ipath_devdata *dd) -{ - /* - * Early chips had a design flaw where the chip and kernel idea - * of the tail register don't always agree, and therefore we won't - * get an interrupt on the next packet received. - * If the board supports per packet receive interrupts, use it. - * Otherwise, the timer function periodically checks for packets - * to cover this case. - * Either way, the timer is needed for verbs layer related - * processing. - */ - if (dd->ipath_flags & IPATH_GPIO_INTR) { - ipath_write_kreg(dd, dd->ipath_kregs->kr_debugportselect, - 0x2074076542310ULL); - /* Enable GPIO bit 2 interrupt */ - dd->ipath_gpio_mask |= (u64) (1 << IPATH_GPIO_PORT0_BIT); - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, - dd->ipath_gpio_mask); - } - - setup_timer(&dd->verbs_timer, __verbs_timer, (unsigned long)dd); - - dd->verbs_timer.expires = jiffies + 1; - add_timer(&dd->verbs_timer); - - return 0; -} - -static int disable_timer(struct ipath_devdata *dd) -{ - /* Disable GPIO bit 2 interrupt */ - if (dd->ipath_flags & IPATH_GPIO_INTR) { - /* Disable GPIO bit 2 interrupt */ - dd->ipath_gpio_mask &= ~((u64) (1 << IPATH_GPIO_PORT0_BIT)); - ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, - dd->ipath_gpio_mask); - /* - * We might want to undo changes to debugportselect, - * but how? - */ - } - - del_timer_sync(&dd->verbs_timer); - - return 0; -} - -static int ipath_port_immutable(struct ib_device *ibdev, u8 port_num, - struct ib_port_immutable *immutable) -{ - struct ib_port_attr attr; - int err; - - err = ipath_query_port(ibdev, port_num, &attr); - if (err) - return err; - - immutable->pkey_tbl_len = attr.pkey_tbl_len; - immutable->gid_tbl_len = attr.gid_tbl_len; - immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; - immutable->max_mad_size = IB_MGMT_MAD_SIZE; - - return 0; -} - -/** - * ipath_register_ib_device - register our device with the infiniband core - * @dd: the device data structure - * Return the allocated ipath_ibdev pointer or NULL on error. - */ -int ipath_register_ib_device(struct ipath_devdata *dd) -{ - struct ipath_verbs_counters cntrs; - struct ipath_ibdev *idev; - struct ib_device *dev; - struct ipath_verbs_txreq *tx; - unsigned i; - int ret; - - idev = (struct ipath_ibdev *)ib_alloc_device(sizeof *idev); - if (idev == NULL) { - ret = -ENOMEM; - goto bail; - } - - dev = &idev->ibdev; - - if (dd->ipath_sdma_descq_cnt) { - tx = kmalloc_array(dd->ipath_sdma_descq_cnt, sizeof *tx, - GFP_KERNEL); - if (tx == NULL) { - ret = -ENOMEM; - goto err_tx; - } - } else - tx = NULL; - idev->txreq_bufs = tx; - - /* Only need to initialize non-zero fields. */ - spin_lock_init(&idev->n_pds_lock); - spin_lock_init(&idev->n_ahs_lock); - spin_lock_init(&idev->n_cqs_lock); - spin_lock_init(&idev->n_qps_lock); - spin_lock_init(&idev->n_srqs_lock); - spin_lock_init(&idev->n_mcast_grps_lock); - - spin_lock_init(&idev->qp_table.lock); - spin_lock_init(&idev->lk_table.lock); - idev->sm_lid = be16_to_cpu(IB_LID_PERMISSIVE); - /* Set the prefix to the default value (see ch. 4.1.1) */ - idev->gid_prefix = cpu_to_be64(0xfe80000000000000ULL); - - ret = ipath_init_qp_table(idev, ib_ipath_qp_table_size); - if (ret) - goto err_qp; - - /* - * The top ib_ipath_lkey_table_size bits are used to index the - * table. The lower 8 bits can be owned by the user (copied from - * the LKEY). The remaining bits act as a generation number or tag. - */ - idev->lk_table.max = 1 << ib_ipath_lkey_table_size; - idev->lk_table.table = kcalloc(idev->lk_table.max, - sizeof(*idev->lk_table.table), - GFP_KERNEL); - if (idev->lk_table.table == NULL) { - ret = -ENOMEM; - goto err_lk; - } - INIT_LIST_HEAD(&idev->pending_mmaps); - spin_lock_init(&idev->pending_lock); - idev->mmap_offset = PAGE_SIZE; - spin_lock_init(&idev->mmap_offset_lock); - INIT_LIST_HEAD(&idev->pending[0]); - INIT_LIST_HEAD(&idev->pending[1]); - INIT_LIST_HEAD(&idev->pending[2]); - INIT_LIST_HEAD(&idev->piowait); - INIT_LIST_HEAD(&idev->rnrwait); - INIT_LIST_HEAD(&idev->txreq_free); - idev->pending_index = 0; - idev->port_cap_flags = - IB_PORT_SYS_IMAGE_GUID_SUP | IB_PORT_CLIENT_REG_SUP; - if (dd->ipath_flags & IPATH_HAS_LINK_LATENCY) - idev->port_cap_flags |= IB_PORT_LINK_LATENCY_SUP; - idev->pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA; - idev->pma_counter_select[1] = IB_PMA_PORT_RCV_DATA; - idev->pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS; - idev->pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS; - idev->pma_counter_select[4] = IB_PMA_PORT_XMIT_WAIT; - - /* Snapshot current HW counters to "clear" them. */ - ipath_get_counters(dd, &cntrs); - idev->z_symbol_error_counter = cntrs.symbol_error_counter; - idev->z_link_error_recovery_counter = - cntrs.link_error_recovery_counter; - idev->z_link_downed_counter = cntrs.link_downed_counter; - idev->z_port_rcv_errors = cntrs.port_rcv_errors; - idev->z_port_rcv_remphys_errors = - cntrs.port_rcv_remphys_errors; - idev->z_port_xmit_discards = cntrs.port_xmit_discards; - idev->z_port_xmit_data = cntrs.port_xmit_data; - idev->z_port_rcv_data = cntrs.port_rcv_data; - idev->z_port_xmit_packets = cntrs.port_xmit_packets; - idev->z_port_rcv_packets = cntrs.port_rcv_packets; - idev->z_local_link_integrity_errors = - cntrs.local_link_integrity_errors; - idev->z_excessive_buffer_overrun_errors = - cntrs.excessive_buffer_overrun_errors; - idev->z_vl15_dropped = cntrs.vl15_dropped; - - for (i = 0; i < dd->ipath_sdma_descq_cnt; i++, tx++) - list_add(&tx->txreq.list, &idev->txreq_free); - - /* - * The system image GUID is supposed to be the same for all - * IB HCAs in a single system but since there can be other - * device types in the system, we can't be sure this is unique. - */ - if (!sys_image_guid) - sys_image_guid = dd->ipath_guid; - idev->sys_image_guid = sys_image_guid; - idev->ib_unit = dd->ipath_unit; - idev->dd = dd; - - strlcpy(dev->name, "ipath%d", IB_DEVICE_NAME_MAX); - dev->owner = THIS_MODULE; - dev->node_guid = dd->ipath_guid; - dev->uverbs_abi_ver = IPATH_UVERBS_ABI_VERSION; - dev->uverbs_cmd_mask = - (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | - (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | - (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | - (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | - (1ull << IB_USER_VERBS_CMD_CREATE_AH) | - (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | - (1ull << IB_USER_VERBS_CMD_QUERY_AH) | - (1ull << IB_USER_VERBS_CMD_REG_MR) | - (1ull << IB_USER_VERBS_CMD_DEREG_MR) | - (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | - (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | - (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | - (1ull << IB_USER_VERBS_CMD_POLL_CQ) | - (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | - (1ull << IB_USER_VERBS_CMD_CREATE_QP) | - (1ull << IB_USER_VERBS_CMD_QUERY_QP) | - (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | - (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | - (1ull << IB_USER_VERBS_CMD_POST_SEND) | - (1ull << IB_USER_VERBS_CMD_POST_RECV) | - (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | - (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | - (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | - (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | - (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | - (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | - (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); - dev->node_type = RDMA_NODE_IB_CA; - dev->phys_port_cnt = 1; - dev->num_comp_vectors = 1; - dev->dma_device = &dd->pcidev->dev; - dev->query_device = ipath_query_device; - dev->modify_device = ipath_modify_device; - dev->query_port = ipath_query_port; - dev->modify_port = ipath_modify_port; - dev->query_pkey = ipath_query_pkey; - dev->query_gid = ipath_query_gid; - dev->alloc_ucontext = ipath_alloc_ucontext; - dev->dealloc_ucontext = ipath_dealloc_ucontext; - dev->alloc_pd = ipath_alloc_pd; - dev->dealloc_pd = ipath_dealloc_pd; - dev->create_ah = ipath_create_ah; - dev->destroy_ah = ipath_destroy_ah; - dev->query_ah = ipath_query_ah; - dev->create_srq = ipath_create_srq; - dev->modify_srq = ipath_modify_srq; - dev->query_srq = ipath_query_srq; - dev->destroy_srq = ipath_destroy_srq; - dev->create_qp = ipath_create_qp; - dev->modify_qp = ipath_modify_qp; - dev->query_qp = ipath_query_qp; - dev->destroy_qp = ipath_destroy_qp; - dev->post_send = ipath_post_send; - dev->post_recv = ipath_post_receive; - dev->post_srq_recv = ipath_post_srq_receive; - dev->create_cq = ipath_create_cq; - dev->destroy_cq = ipath_destroy_cq; - dev->resize_cq = ipath_resize_cq; - dev->poll_cq = ipath_poll_cq; - dev->req_notify_cq = ipath_req_notify_cq; - dev->get_dma_mr = ipath_get_dma_mr; - dev->reg_user_mr = ipath_reg_user_mr; - dev->dereg_mr = ipath_dereg_mr; - dev->alloc_fmr = ipath_alloc_fmr; - dev->map_phys_fmr = ipath_map_phys_fmr; - dev->unmap_fmr = ipath_unmap_fmr; - dev->dealloc_fmr = ipath_dealloc_fmr; - dev->attach_mcast = ipath_multicast_attach; - dev->detach_mcast = ipath_multicast_detach; - dev->process_mad = ipath_process_mad; - dev->mmap = ipath_mmap; - dev->dma_ops = &ipath_dma_mapping_ops; - dev->get_port_immutable = ipath_port_immutable; - - snprintf(dev->node_desc, sizeof(dev->node_desc), - IPATH_IDSTR " %s", init_utsname()->nodename); - - ret = ib_register_device(dev, NULL); - if (ret) - goto err_reg; - - ret = ipath_verbs_register_sysfs(dev); - if (ret) - goto err_class; - - enable_timer(dd); - - goto bail; - -err_class: - ib_unregister_device(dev); -err_reg: - kfree(idev->lk_table.table); -err_lk: - kfree(idev->qp_table.table); -err_qp: - kfree(idev->txreq_bufs); -err_tx: - ib_dealloc_device(dev); - ipath_dev_err(dd, "cannot register verbs: %d!\n", -ret); - idev = NULL; - -bail: - dd->verbs_dev = idev; - return ret; -} - -void ipath_unregister_ib_device(struct ipath_ibdev *dev) -{ - struct ib_device *ibdev = &dev->ibdev; - u32 qps_inuse; - - ib_unregister_device(ibdev); - - disable_timer(dev->dd); - - if (!list_empty(&dev->pending[0]) || - !list_empty(&dev->pending[1]) || - !list_empty(&dev->pending[2])) - ipath_dev_err(dev->dd, "pending list not empty!\n"); - if (!list_empty(&dev->piowait)) - ipath_dev_err(dev->dd, "piowait list not empty!\n"); - if (!list_empty(&dev->rnrwait)) - ipath_dev_err(dev->dd, "rnrwait list not empty!\n"); - if (!ipath_mcast_tree_empty()) - ipath_dev_err(dev->dd, "multicast table memory leak!\n"); - /* - * Note that ipath_unregister_ib_device() can be called before all - * the QPs are destroyed! - */ - qps_inuse = ipath_free_all_qps(&dev->qp_table); - if (qps_inuse) - ipath_dev_err(dev->dd, "QP memory leak! %u still in use\n", - qps_inuse); - kfree(dev->qp_table.table); - kfree(dev->lk_table.table); - kfree(dev->txreq_bufs); - ib_dealloc_device(ibdev); -} - -static ssize_t show_rev(struct device *device, struct device_attribute *attr, - char *buf) -{ - struct ipath_ibdev *dev = - container_of(device, struct ipath_ibdev, ibdev.dev); - - return sprintf(buf, "%x\n", dev->dd->ipath_pcirev); -} - -static ssize_t show_hca(struct device *device, struct device_attribute *attr, - char *buf) -{ - struct ipath_ibdev *dev = - container_of(device, struct ipath_ibdev, ibdev.dev); - int ret; - - ret = dev->dd->ipath_f_get_boardname(dev->dd, buf, 128); - if (ret < 0) - goto bail; - strcat(buf, "\n"); - ret = strlen(buf); - -bail: - return ret; -} - -static ssize_t show_stats(struct device *device, struct device_attribute *attr, - char *buf) -{ - struct ipath_ibdev *dev = - container_of(device, struct ipath_ibdev, ibdev.dev); - int i; - int len; - - len = sprintf(buf, - "RC resends %d\n" - "RC no QACK %d\n" - "RC ACKs %d\n" - "RC SEQ NAKs %d\n" - "RC RDMA seq %d\n" - "RC RNR NAKs %d\n" - "RC OTH NAKs %d\n" - "RC timeouts %d\n" - "RC RDMA dup %d\n" - "piobuf wait %d\n" - "unaligned %d\n" - "PKT drops %d\n" - "WQE errs %d\n", - dev->n_rc_resends, dev->n_rc_qacks, dev->n_rc_acks, - dev->n_seq_naks, dev->n_rdma_seq, dev->n_rnr_naks, - dev->n_other_naks, dev->n_timeouts, - dev->n_rdma_dup_busy, dev->n_piowait, dev->n_unaligned, - dev->n_pkt_drops, dev->n_wqe_errs); - for (i = 0; i < ARRAY_SIZE(dev->opstats); i++) { - const struct ipath_opcode_stats *si = &dev->opstats[i]; - - if (!si->n_packets && !si->n_bytes) - continue; - len += sprintf(buf + len, "%02x %llu/%llu\n", i, - (unsigned long long) si->n_packets, - (unsigned long long) si->n_bytes); - } - return len; -} - -static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); -static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); -static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL); -static DEVICE_ATTR(stats, S_IRUGO, show_stats, NULL); - -static struct device_attribute *ipath_class_attributes[] = { - &dev_attr_hw_rev, - &dev_attr_hca_type, - &dev_attr_board_id, - &dev_attr_stats -}; - -static int ipath_verbs_register_sysfs(struct ib_device *dev) -{ - int i; - int ret; - - for (i = 0; i < ARRAY_SIZE(ipath_class_attributes); ++i) { - ret = device_create_file(&dev->dev, - ipath_class_attributes[i]); - if (ret) - goto bail; - } - return 0; -bail: - for (i = 0; i < ARRAY_SIZE(ipath_class_attributes); ++i) - device_remove_file(&dev->dev, ipath_class_attributes[i]); - return ret; -} diff --git a/drivers/staging/rdma/ipath/ipath_verbs.h b/drivers/staging/rdma/ipath/ipath_verbs.h deleted file mode 100644 index 6c70a89667a9..000000000000 --- a/drivers/staging/rdma/ipath/ipath_verbs.h +++ /dev/null @@ -1,941 +0,0 @@ -/* - * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef IPATH_VERBS_H -#define IPATH_VERBS_H - -#include -#include -#include -#include -#include -#include -#include - -#include "ipath_kernel.h" - -#define IPATH_MAX_RDMA_ATOMIC 4 - -#define QPN_MAX (1 << 24) -#define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE) - -/* - * Increment this value if any changes that break userspace ABI - * compatibility are made. - */ -#define IPATH_UVERBS_ABI_VERSION 2 - -/* - * Define an ib_cq_notify value that is not valid so we know when CQ - * notifications are armed. - */ -#define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1) - -/* AETH NAK opcode values */ -#define IB_RNR_NAK 0x20 -#define IB_NAK_PSN_ERROR 0x60 -#define IB_NAK_INVALID_REQUEST 0x61 -#define IB_NAK_REMOTE_ACCESS_ERROR 0x62 -#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63 -#define IB_NAK_INVALID_RD_REQUEST 0x64 - -/* Flags for checking QP state (see ib_ipath_state_ops[]) */ -#define IPATH_POST_SEND_OK 0x01 -#define IPATH_POST_RECV_OK 0x02 -#define IPATH_PROCESS_RECV_OK 0x04 -#define IPATH_PROCESS_SEND_OK 0x08 -#define IPATH_PROCESS_NEXT_SEND_OK 0x10 -#define IPATH_FLUSH_SEND 0x20 -#define IPATH_FLUSH_RECV 0x40 -#define IPATH_PROCESS_OR_FLUSH_SEND \ - (IPATH_PROCESS_SEND_OK | IPATH_FLUSH_SEND) - -/* IB Performance Manager status values */ -#define IB_PMA_SAMPLE_STATUS_DONE 0x00 -#define IB_PMA_SAMPLE_STATUS_STARTED 0x01 -#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02 - -/* Mandatory IB performance counter select values. */ -#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001) -#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002) -#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003) -#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004) -#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005) - -struct ib_reth { - __be64 vaddr; - __be32 rkey; - __be32 length; -} __attribute__ ((packed)); - -struct ib_atomic_eth { - __be32 vaddr[2]; /* unaligned so access as 2 32-bit words */ - __be32 rkey; - __be64 swap_data; - __be64 compare_data; -} __attribute__ ((packed)); - -struct ipath_other_headers { - __be32 bth[3]; - union { - struct { - __be32 deth[2]; - __be32 imm_data; - } ud; - struct { - struct ib_reth reth; - __be32 imm_data; - } rc; - struct { - __be32 aeth; - __be32 atomic_ack_eth[2]; - } at; - __be32 imm_data; - __be32 aeth; - struct ib_atomic_eth atomic_eth; - } u; -} __attribute__ ((packed)); - -/* - * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes - * long (72 w/ imm_data). Only the first 56 bytes of the IB header - * will be in the eager header buffer. The remaining 12 or 16 bytes - * are in the data buffer. - */ -struct ipath_ib_header { - __be16 lrh[4]; - union { - struct { - struct ib_grh grh; - struct ipath_other_headers oth; - } l; - struct ipath_other_headers oth; - } u; -} __attribute__ ((packed)); - -struct ipath_pio_header { - __le32 pbc[2]; - struct ipath_ib_header hdr; -} __attribute__ ((packed)); - -/* - * There is one struct ipath_mcast for each multicast GID. - * All attached QPs are then stored as a list of - * struct ipath_mcast_qp. - */ -struct ipath_mcast_qp { - struct list_head list; - struct ipath_qp *qp; -}; - -struct ipath_mcast { - struct rb_node rb_node; - union ib_gid mgid; - struct list_head qp_list; - wait_queue_head_t wait; - atomic_t refcount; - int n_attached; -}; - -/* Protection domain */ -struct ipath_pd { - struct ib_pd ibpd; - int user; /* non-zero if created from user space */ -}; - -/* Address Handle */ -struct ipath_ah { - struct ib_ah ibah; - struct ib_ah_attr attr; -}; - -/* - * This structure is used by ipath_mmap() to validate an offset - * when an mmap() request is made. The vm_area_struct then uses - * this as its vm_private_data. - */ -struct ipath_mmap_info { - struct list_head pending_mmaps; - struct ib_ucontext *context; - void *obj; - __u64 offset; - struct kref ref; - unsigned size; -}; - -/* - * This structure is used to contain the head pointer, tail pointer, - * and completion queue entries as a single memory allocation so - * it can be mmap'ed into user space. - */ -struct ipath_cq_wc { - u32 head; /* index of next entry to fill */ - u32 tail; /* index of next ib_poll_cq() entry */ - union { - /* these are actually size ibcq.cqe + 1 */ - struct ib_uverbs_wc uqueue[0]; - struct ib_wc kqueue[0]; - }; -}; - -/* - * The completion queue structure. - */ -struct ipath_cq { - struct ib_cq ibcq; - struct tasklet_struct comptask; - spinlock_t lock; - u8 notify; - u8 triggered; - struct ipath_cq_wc *queue; - struct ipath_mmap_info *ip; -}; - -/* - * A segment is a linear region of low physical memory. - * XXX Maybe we should use phys addr here and kmap()/kunmap(). - * Used by the verbs layer. - */ -struct ipath_seg { - void *vaddr; - size_t length; -}; - -/* The number of ipath_segs that fit in a page. */ -#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) - -struct ipath_segarray { - struct ipath_seg segs[IPATH_SEGSZ]; -}; - -struct ipath_mregion { - struct ib_pd *pd; /* shares refcnt of ibmr.pd */ - u64 user_base; /* User's address for this region */ - u64 iova; /* IB start address of this region */ - size_t length; - u32 lkey; - u32 offset; /* offset (bytes) to start of region */ - int access_flags; - u32 max_segs; /* number of ipath_segs in all the arrays */ - u32 mapsz; /* size of the map array */ - struct ipath_segarray *map[0]; /* the segments */ -}; - -/* - * These keep track of the copy progress within a memory region. - * Used by the verbs layer. - */ -struct ipath_sge { - struct ipath_mregion *mr; - void *vaddr; /* kernel virtual address of segment */ - u32 sge_length; /* length of the SGE */ - u32 length; /* remaining length of the segment */ - u16 m; /* current index: mr->map[m] */ - u16 n; /* current index: mr->map[m]->segs[n] */ -}; - -/* Memory region */ -struct ipath_mr { - struct ib_mr ibmr; - struct ib_umem *umem; - struct ipath_mregion mr; /* must be last */ -}; - -/* - * Send work request queue entry. - * The size of the sg_list is determined when the QP is created and stored - * in qp->s_max_sge. - */ -struct ipath_swqe { - union { - struct ib_send_wr wr; /* don't use wr.sg_list */ - struct ib_ud_wr ud_wr; - struct ib_rdma_wr rdma_wr; - struct ib_atomic_wr atomic_wr; - }; - - u32 psn; /* first packet sequence number */ - u32 lpsn; /* last packet sequence number */ - u32 ssn; /* send sequence number */ - u32 length; /* total length of data in sg_list */ - struct ipath_sge sg_list[0]; -}; - -/* - * Receive work request queue entry. - * The size of the sg_list is determined when the QP (or SRQ) is created - * and stored in qp->r_rq.max_sge (or srq->rq.max_sge). - */ -struct ipath_rwqe { - u64 wr_id; - u8 num_sge; - struct ib_sge sg_list[0]; -}; - -/* - * This structure is used to contain the head pointer, tail pointer, - * and receive work queue entries as a single memory allocation so - * it can be mmap'ed into user space. - * Note that the wq array elements are variable size so you can't - * just index into the array to get the N'th element; - * use get_rwqe_ptr() instead. - */ -struct ipath_rwq { - u32 head; /* new work requests posted to the head */ - u32 tail; /* receives pull requests from here. */ - struct ipath_rwqe wq[0]; -}; - -struct ipath_rq { - struct ipath_rwq *wq; - spinlock_t lock; - u32 size; /* size of RWQE array */ - u8 max_sge; -}; - -struct ipath_srq { - struct ib_srq ibsrq; - struct ipath_rq rq; - struct ipath_mmap_info *ip; - /* send signal when number of RWQEs < limit */ - u32 limit; -}; - -struct ipath_sge_state { - struct ipath_sge *sg_list; /* next SGE to be used if any */ - struct ipath_sge sge; /* progress state for the current SGE */ - u8 num_sge; - u8 static_rate; -}; - -/* - * This structure holds the information that the send tasklet needs - * to send a RDMA read response or atomic operation. - */ -struct ipath_ack_entry { - u8 opcode; - u8 sent; - u32 psn; - union { - struct ipath_sge_state rdma_sge; - u64 atomic_data; - }; -}; - -/* - * Variables prefixed with s_ are for the requester (sender). - * Variables prefixed with r_ are for the responder (receiver). - * Variables prefixed with ack_ are for responder replies. - * - * Common variables are protected by both r_rq.lock and s_lock in that order - * which only happens in modify_qp() or changing the QP 'state'. - */ -struct ipath_qp { - struct ib_qp ibqp; - struct ipath_qp *next; /* link list for QPN hash table */ - struct ipath_qp *timer_next; /* link list for ipath_ib_timer() */ - struct ipath_qp *pio_next; /* link for ipath_ib_piobufavail() */ - struct list_head piowait; /* link for wait PIO buf */ - struct list_head timerwait; /* link for waiting for timeouts */ - struct ib_ah_attr remote_ah_attr; - struct ipath_ib_header s_hdr; /* next packet header to send */ - atomic_t refcount; - wait_queue_head_t wait; - wait_queue_head_t wait_dma; - struct tasklet_struct s_task; - struct ipath_mmap_info *ip; - struct ipath_sge_state *s_cur_sge; - struct ipath_verbs_txreq *s_tx; - struct ipath_sge_state s_sge; /* current send request data */ - struct ipath_ack_entry s_ack_queue[IPATH_MAX_RDMA_ATOMIC + 1]; - struct ipath_sge_state s_ack_rdma_sge; - struct ipath_sge_state s_rdma_read_sge; - struct ipath_sge_state r_sge; /* current receive data */ - spinlock_t s_lock; - atomic_t s_dma_busy; - u16 s_pkt_delay; - u16 s_hdrwords; /* size of s_hdr in 32 bit words */ - u32 s_cur_size; /* size of send packet in bytes */ - u32 s_len; /* total length of s_sge */ - u32 s_rdma_read_len; /* total length of s_rdma_read_sge */ - u32 s_next_psn; /* PSN for next request */ - u32 s_last_psn; /* last response PSN processed */ - u32 s_psn; /* current packet sequence number */ - u32 s_ack_rdma_psn; /* PSN for sending RDMA read responses */ - u32 s_ack_psn; /* PSN for acking sends and RDMA writes */ - u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ - u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ - u64 r_wr_id; /* ID for current receive WQE */ - unsigned long r_aflags; - u32 r_len; /* total length of r_sge */ - u32 r_rcv_len; /* receive data len processed */ - u32 r_psn; /* expected rcv packet sequence number */ - u32 r_msn; /* message sequence number */ - u8 state; /* QP state */ - u8 s_state; /* opcode of last packet sent */ - u8 s_ack_state; /* opcode of packet to ACK */ - u8 s_nak_state; /* non-zero if NAK is pending */ - u8 r_state; /* opcode of last packet received */ - u8 r_nak_state; /* non-zero if NAK is pending */ - u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ - u8 r_flags; - u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */ - u8 r_head_ack_queue; /* index into s_ack_queue[] */ - u8 qp_access_flags; - u8 s_max_sge; /* size of s_wq->sg_list */ - u8 s_retry_cnt; /* number of times to retry */ - u8 s_rnr_retry_cnt; - u8 s_retry; /* requester retry counter */ - u8 s_rnr_retry; /* requester RNR retry counter */ - u8 s_pkey_index; /* PKEY index to use */ - u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */ - u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */ - u8 s_tail_ack_queue; /* index into s_ack_queue[] */ - u8 s_flags; - u8 s_dmult; - u8 s_draining; - u8 timeout; /* Timeout for this QP */ - enum ib_mtu path_mtu; - u32 remote_qpn; - u32 qkey; /* QKEY for this QP (for UD or RD) */ - u32 s_size; /* send work queue size */ - u32 s_head; /* new entries added here */ - u32 s_tail; /* next entry to process */ - u32 s_cur; /* current work queue entry */ - u32 s_last; /* last un-ACK'ed entry */ - u32 s_ssn; /* SSN of tail entry */ - u32 s_lsn; /* limit sequence number (credit) */ - struct ipath_swqe *s_wq; /* send work queue */ - struct ipath_swqe *s_wqe; - struct ipath_sge *r_ud_sg_list; - struct ipath_rq r_rq; /* receive work queue */ - struct ipath_sge r_sg_list[0]; /* verified SGEs */ -}; - -/* - * Atomic bit definitions for r_aflags. - */ -#define IPATH_R_WRID_VALID 0 - -/* - * Bit definitions for r_flags. - */ -#define IPATH_R_REUSE_SGE 0x01 -#define IPATH_R_RDMAR_SEQ 0x02 - -/* - * Bit definitions for s_flags. - * - * IPATH_S_FENCE_PENDING - waiting for all prior RDMA read or atomic SWQEs - * before processing the next SWQE - * IPATH_S_RDMAR_PENDING - waiting for any RDMA read or atomic SWQEs - * before processing the next SWQE - * IPATH_S_WAITING - waiting for RNR timeout or send buffer available. - * IPATH_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE - * IPATH_S_WAIT_DMA - waiting for send DMA queue to drain before generating - * next send completion entry not via send DMA. - */ -#define IPATH_S_SIGNAL_REQ_WR 0x01 -#define IPATH_S_FENCE_PENDING 0x02 -#define IPATH_S_RDMAR_PENDING 0x04 -#define IPATH_S_ACK_PENDING 0x08 -#define IPATH_S_BUSY 0x10 -#define IPATH_S_WAITING 0x20 -#define IPATH_S_WAIT_SSN_CREDIT 0x40 -#define IPATH_S_WAIT_DMA 0x80 - -#define IPATH_S_ANY_WAIT (IPATH_S_FENCE_PENDING | IPATH_S_RDMAR_PENDING | \ - IPATH_S_WAITING | IPATH_S_WAIT_SSN_CREDIT | IPATH_S_WAIT_DMA) - -#define IPATH_PSN_CREDIT 512 - -/* - * Since struct ipath_swqe is not a fixed size, we can't simply index into - * struct ipath_qp.s_wq. This function does the array index computation. - */ -static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp, - unsigned n) -{ - return (struct ipath_swqe *)((char *)qp->s_wq + - (sizeof(struct ipath_swqe) + - qp->s_max_sge * - sizeof(struct ipath_sge)) * n); -} - -/* - * Since struct ipath_rwqe is not a fixed size, we can't simply index into - * struct ipath_rwq.wq. This function does the array index computation. - */ -static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq, - unsigned n) -{ - return (struct ipath_rwqe *) - ((char *) rq->wq->wq + - (sizeof(struct ipath_rwqe) + - rq->max_sge * sizeof(struct ib_sge)) * n); -} - -/* - * QPN-map pages start out as NULL, they get allocated upon - * first use and are never deallocated. This way, - * large bitmaps are not allocated unless large numbers of QPs are used. - */ -struct qpn_map { - atomic_t n_free; - void *page; -}; - -struct ipath_qp_table { - spinlock_t lock; - u32 last; /* last QP number allocated */ - u32 max; /* size of the hash table */ - u32 nmaps; /* size of the map table */ - struct ipath_qp **table; - /* bit map of free numbers */ - struct qpn_map map[QPNMAP_ENTRIES]; -}; - -struct ipath_lkey_table { - spinlock_t lock; - u32 next; /* next unused index (speeds search) */ - u32 gen; /* generation count */ - u32 max; /* size of the table */ - struct ipath_mregion **table; -}; - -struct ipath_opcode_stats { - u64 n_packets; /* number of packets */ - u64 n_bytes; /* total number of bytes */ -}; - -struct ipath_ibdev { - struct ib_device ibdev; - struct ipath_devdata *dd; - struct list_head pending_mmaps; - spinlock_t mmap_offset_lock; - u32 mmap_offset; - int ib_unit; /* This is the device number */ - u16 sm_lid; /* in host order */ - u8 sm_sl; - u8 mkeyprot; - /* non-zero when timer is set */ - unsigned long mkey_lease_timeout; - - /* The following fields are really per port. */ - struct ipath_qp_table qp_table; - struct ipath_lkey_table lk_table; - struct list_head pending[3]; /* FIFO of QPs waiting for ACKs */ - struct list_head piowait; /* list for wait PIO buf */ - struct list_head txreq_free; - void *txreq_bufs; - /* list of QPs waiting for RNR timer */ - struct list_head rnrwait; - spinlock_t pending_lock; - __be64 sys_image_guid; /* in network order */ - __be64 gid_prefix; /* in network order */ - __be64 mkey; - - u32 n_pds_allocated; /* number of PDs allocated for device */ - spinlock_t n_pds_lock; - u32 n_ahs_allocated; /* number of AHs allocated for device */ - spinlock_t n_ahs_lock; - u32 n_cqs_allocated; /* number of CQs allocated for device */ - spinlock_t n_cqs_lock; - u32 n_qps_allocated; /* number of QPs allocated for device */ - spinlock_t n_qps_lock; - u32 n_srqs_allocated; /* number of SRQs allocated for device */ - spinlock_t n_srqs_lock; - u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ - spinlock_t n_mcast_grps_lock; - - u64 ipath_sword; /* total dwords sent (sample result) */ - u64 ipath_rword; /* total dwords received (sample result) */ - u64 ipath_spkts; /* total packets sent (sample result) */ - u64 ipath_rpkts; /* total packets received (sample result) */ - /* # of ticks no data sent (sample result) */ - u64 ipath_xmit_wait; - u64 rcv_errors; /* # of packets with SW detected rcv errs */ - u64 n_unicast_xmit; /* total unicast packets sent */ - u64 n_unicast_rcv; /* total unicast packets received */ - u64 n_multicast_xmit; /* total multicast packets sent */ - u64 n_multicast_rcv; /* total multicast packets received */ - u64 z_symbol_error_counter; /* starting count for PMA */ - u64 z_link_error_recovery_counter; /* starting count for PMA */ - u64 z_link_downed_counter; /* starting count for PMA */ - u64 z_port_rcv_errors; /* starting count for PMA */ - u64 z_port_rcv_remphys_errors; /* starting count for PMA */ - u64 z_port_xmit_discards; /* starting count for PMA */ - u64 z_port_xmit_data; /* starting count for PMA */ - u64 z_port_rcv_data; /* starting count for PMA */ - u64 z_port_xmit_packets; /* starting count for PMA */ - u64 z_port_rcv_packets; /* starting count for PMA */ - u32 z_pkey_violations; /* starting count for PMA */ - u32 z_local_link_integrity_errors; /* starting count for PMA */ - u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ - u32 z_vl15_dropped; /* starting count for PMA */ - u32 n_rc_resends; - u32 n_rc_acks; - u32 n_rc_qacks; - u32 n_seq_naks; - u32 n_rdma_seq; - u32 n_rnr_naks; - u32 n_other_naks; - u32 n_timeouts; - u32 n_pkt_drops; - u32 n_vl15_dropped; - u32 n_wqe_errs; - u32 n_rdma_dup_busy; - u32 n_piowait; - u32 n_unaligned; - u32 port_cap_flags; - u32 pma_sample_start; - u32 pma_sample_interval; - __be16 pma_counter_select[5]; - u16 pma_tag; - u16 qkey_violations; - u16 mkey_violations; - u16 mkey_lease_period; - u16 pending_index; /* which pending queue is active */ - u8 pma_sample_status; - u8 subnet_timeout; - u8 vl_high_limit; - struct ipath_opcode_stats opstats[128]; -}; - -struct ipath_verbs_counters { - u64 symbol_error_counter; - u64 link_error_recovery_counter; - u64 link_downed_counter; - u64 port_rcv_errors; - u64 port_rcv_remphys_errors; - u64 port_xmit_discards; - u64 port_xmit_data; - u64 port_rcv_data; - u64 port_xmit_packets; - u64 port_rcv_packets; - u32 local_link_integrity_errors; - u32 excessive_buffer_overrun_errors; - u32 vl15_dropped; -}; - -struct ipath_verbs_txreq { - struct ipath_qp *qp; - struct ipath_swqe *wqe; - u32 map_len; - u32 len; - struct ipath_sge_state *ss; - struct ipath_pio_header hdr; - struct ipath_sdma_txreq txreq; -}; - -static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) -{ - return container_of(ibmr, struct ipath_mr, ibmr); -} - -static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd) -{ - return container_of(ibpd, struct ipath_pd, ibpd); -} - -static inline struct ipath_ah *to_iah(struct ib_ah *ibah) -{ - return container_of(ibah, struct ipath_ah, ibah); -} - -static inline struct ipath_cq *to_icq(struct ib_cq *ibcq) -{ - return container_of(ibcq, struct ipath_cq, ibcq); -} - -static inline struct ipath_srq *to_isrq(struct ib_srq *ibsrq) -{ - return container_of(ibsrq, struct ipath_srq, ibsrq); -} - -static inline struct ipath_qp *to_iqp(struct ib_qp *ibqp) -{ - return container_of(ibqp, struct ipath_qp, ibqp); -} - -static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev) -{ - return container_of(ibdev, struct ipath_ibdev, ibdev); -} - -/* - * This must be called with s_lock held. - */ -static inline void ipath_schedule_send(struct ipath_qp *qp) -{ - if (qp->s_flags & IPATH_S_ANY_WAIT) - qp->s_flags &= ~IPATH_S_ANY_WAIT; - if (!(qp->s_flags & IPATH_S_BUSY)) - tasklet_hi_schedule(&qp->s_task); -} - -int ipath_process_mad(struct ib_device *ibdev, - int mad_flags, - u8 port_num, - const struct ib_wc *in_wc, - const struct ib_grh *in_grh, - const struct ib_mad_hdr *in, size_t in_mad_size, - struct ib_mad_hdr *out, size_t *out_mad_size, - u16 *out_mad_pkey_index); - -/* - * Compare the lower 24 bits of the two values. - * Returns an integer <, ==, or > than zero. - */ -static inline int ipath_cmp24(u32 a, u32 b) -{ - return (((int) a) - ((int) b)) << 8; -} - -struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid); - -int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords, - u64 *rwords, u64 *spkts, u64 *rpkts, - u64 *xmit_wait); - -int ipath_get_counters(struct ipath_devdata *dd, - struct ipath_verbs_counters *cntrs); - -int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); - -int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); - -int ipath_mcast_tree_empty(void); - -__be32 ipath_compute_aeth(struct ipath_qp *qp); - -struct ipath_qp *ipath_lookup_qpn(struct ipath_qp_table *qpt, u32 qpn); - -struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, - struct ib_qp_init_attr *init_attr, - struct ib_udata *udata); - -int ipath_destroy_qp(struct ib_qp *ibqp); - -int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err); - -int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask, struct ib_udata *udata); - -int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, - int attr_mask, struct ib_qp_init_attr *init_attr); - -unsigned ipath_free_all_qps(struct ipath_qp_table *qpt); - -int ipath_init_qp_table(struct ipath_ibdev *idev, int size); - -void ipath_get_credit(struct ipath_qp *qp, u32 aeth); - -unsigned ipath_ib_rate_to_mult(enum ib_rate rate); - -int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr, - u32 hdrwords, struct ipath_sge_state *ss, u32 len); - -void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length); - -void ipath_skip_sge(struct ipath_sge_state *ss, u32 length); - -void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp); - -void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp); - -void ipath_restart_rc(struct ipath_qp *qp, u32 psn); - -void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err); - -int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr); - -void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - int has_grh, void *data, u32 tlen, struct ipath_qp *qp); - -int ipath_alloc_lkey(struct ipath_lkey_table *rkt, - struct ipath_mregion *mr); - -void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey); - -int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, - struct ib_sge *sge, int acc); - -int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, - u32 len, u64 vaddr, u32 rkey, int acc); - -int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, - struct ib_recv_wr **bad_wr); - -struct ib_srq *ipath_create_srq(struct ib_pd *ibpd, - struct ib_srq_init_attr *srq_init_attr, - struct ib_udata *udata); - -int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, - enum ib_srq_attr_mask attr_mask, - struct ib_udata *udata); - -int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr); - -int ipath_destroy_srq(struct ib_srq *ibsrq); - -void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int sig); - -int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); - -struct ib_cq *ipath_create_cq(struct ib_device *ibdev, - const struct ib_cq_init_attr *attr, - struct ib_ucontext *context, - struct ib_udata *udata); - -int ipath_destroy_cq(struct ib_cq *ibcq); - -int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags); - -int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata); - -struct ib_mr *ipath_get_dma_mr(struct ib_pd *pd, int acc); - -struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, - u64 virt_addr, int mr_access_flags, - struct ib_udata *udata); - -int ipath_dereg_mr(struct ib_mr *ibmr); - -struct ib_fmr *ipath_alloc_fmr(struct ib_pd *pd, int mr_access_flags, - struct ib_fmr_attr *fmr_attr); - -int ipath_map_phys_fmr(struct ib_fmr *ibfmr, u64 * page_list, - int list_len, u64 iova); - -int ipath_unmap_fmr(struct list_head *fmr_list); - -int ipath_dealloc_fmr(struct ib_fmr *ibfmr); - -void ipath_release_mmap_info(struct kref *ref); - -struct ipath_mmap_info *ipath_create_mmap_info(struct ipath_ibdev *dev, - u32 size, - struct ib_ucontext *context, - void *obj); - -void ipath_update_mmap_info(struct ipath_ibdev *dev, - struct ipath_mmap_info *ip, - u32 size, void *obj); - -int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); - -void ipath_insert_rnr_queue(struct ipath_qp *qp); - -int ipath_init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe, - u32 *lengthp, struct ipath_sge_state *ss); - -int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only); - -u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr, - struct ib_global_route *grh, u32 hwords, u32 nwords); - -void ipath_make_ruc_header(struct ipath_ibdev *dev, struct ipath_qp *qp, - struct ipath_other_headers *ohdr, - u32 bth0, u32 bth2); - -void ipath_do_send(unsigned long data); - -void ipath_send_complete(struct ipath_qp *qp, struct ipath_swqe *wqe, - enum ib_wc_status status); - -int ipath_make_rc_req(struct ipath_qp *qp); - -int ipath_make_uc_req(struct ipath_qp *qp); - -int ipath_make_ud_req(struct ipath_qp *qp); - -int ipath_register_ib_device(struct ipath_devdata *); - -void ipath_unregister_ib_device(struct ipath_ibdev *); - -void ipath_ib_rcv(struct ipath_ibdev *, void *, void *, u32); - -int ipath_ib_piobufavail(struct ipath_ibdev *); - -unsigned ipath_get_npkeys(struct ipath_devdata *); - -u32 ipath_get_cr_errpkey(struct ipath_devdata *); - -unsigned ipath_get_pkey(struct ipath_devdata *, unsigned); - -extern const enum ib_wc_opcode ib_ipath_wc_opcode[]; - -/* - * Below converts HCA-specific LinkTrainingState to IB PhysPortState - * values. - */ -extern const u8 ipath_cvt_physportstate[]; -#define IB_PHYSPORTSTATE_SLEEP 1 -#define IB_PHYSPORTSTATE_POLL 2 -#define IB_PHYSPORTSTATE_DISABLED 3 -#define IB_PHYSPORTSTATE_CFG_TRAIN 4 -#define IB_PHYSPORTSTATE_LINKUP 5 -#define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6 - -extern const int ib_ipath_state_ops[]; - -extern unsigned int ib_ipath_lkey_table_size; - -extern unsigned int ib_ipath_max_cqes; - -extern unsigned int ib_ipath_max_cqs; - -extern unsigned int ib_ipath_max_qp_wrs; - -extern unsigned int ib_ipath_max_qps; - -extern unsigned int ib_ipath_max_sges; - -extern unsigned int ib_ipath_max_mcast_grps; - -extern unsigned int ib_ipath_max_mcast_qp_attached; - -extern unsigned int ib_ipath_max_srqs; - -extern unsigned int ib_ipath_max_srq_sges; - -extern unsigned int ib_ipath_max_srq_wrs; - -extern const u32 ib_ipath_rnr_table[]; - -extern struct ib_dma_mapping_ops ipath_dma_mapping_ops; - -#endif /* IPATH_VERBS_H */ diff --git a/drivers/staging/rdma/ipath/ipath_verbs_mcast.c b/drivers/staging/rdma/ipath/ipath_verbs_mcast.c deleted file mode 100644 index 72d476fa5b8f..000000000000 --- a/drivers/staging/rdma/ipath/ipath_verbs_mcast.c +++ /dev/null @@ -1,363 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include -#include - -#include "ipath_verbs.h" - -/* - * Global table of GID to attached QPs. - * The table is global to all ipath devices since a send from one QP/device - * needs to be locally routed to any locally attached QPs on the same - * or different device. - */ -static struct rb_root mcast_tree; -static DEFINE_SPINLOCK(mcast_lock); - -/** - * ipath_mcast_qp_alloc - alloc a struct to link a QP to mcast GID struct - * @qp: the QP to link - */ -static struct ipath_mcast_qp *ipath_mcast_qp_alloc(struct ipath_qp *qp) -{ - struct ipath_mcast_qp *mqp; - - mqp = kmalloc(sizeof *mqp, GFP_KERNEL); - if (!mqp) - goto bail; - - mqp->qp = qp; - atomic_inc(&qp->refcount); - -bail: - return mqp; -} - -static void ipath_mcast_qp_free(struct ipath_mcast_qp *mqp) -{ - struct ipath_qp *qp = mqp->qp; - - /* Notify ipath_destroy_qp() if it is waiting. */ - if (atomic_dec_and_test(&qp->refcount)) - wake_up(&qp->wait); - - kfree(mqp); -} - -/** - * ipath_mcast_alloc - allocate the multicast GID structure - * @mgid: the multicast GID - * - * A list of QPs will be attached to this structure. - */ -static struct ipath_mcast *ipath_mcast_alloc(union ib_gid *mgid) -{ - struct ipath_mcast *mcast; - - mcast = kmalloc(sizeof *mcast, GFP_KERNEL); - if (!mcast) - goto bail; - - mcast->mgid = *mgid; - INIT_LIST_HEAD(&mcast->qp_list); - init_waitqueue_head(&mcast->wait); - atomic_set(&mcast->refcount, 0); - mcast->n_attached = 0; - -bail: - return mcast; -} - -static void ipath_mcast_free(struct ipath_mcast *mcast) -{ - struct ipath_mcast_qp *p, *tmp; - - list_for_each_entry_safe(p, tmp, &mcast->qp_list, list) - ipath_mcast_qp_free(p); - - kfree(mcast); -} - -/** - * ipath_mcast_find - search the global table for the given multicast GID - * @mgid: the multicast GID to search for - * - * Returns NULL if not found. - * - * The caller is responsible for decrementing the reference count if found. - */ -struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid) -{ - struct rb_node *n; - unsigned long flags; - struct ipath_mcast *mcast; - - spin_lock_irqsave(&mcast_lock, flags); - n = mcast_tree.rb_node; - while (n) { - int ret; - - mcast = rb_entry(n, struct ipath_mcast, rb_node); - - ret = memcmp(mgid->raw, mcast->mgid.raw, - sizeof(union ib_gid)); - if (ret < 0) - n = n->rb_left; - else if (ret > 0) - n = n->rb_right; - else { - atomic_inc(&mcast->refcount); - spin_unlock_irqrestore(&mcast_lock, flags); - goto bail; - } - } - spin_unlock_irqrestore(&mcast_lock, flags); - - mcast = NULL; - -bail: - return mcast; -} - -/** - * ipath_mcast_add - insert mcast GID into table and attach QP struct - * @mcast: the mcast GID table - * @mqp: the QP to attach - * - * Return zero if both were added. Return EEXIST if the GID was already in - * the table but the QP was added. Return ESRCH if the QP was already - * attached and neither structure was added. - */ -static int ipath_mcast_add(struct ipath_ibdev *dev, - struct ipath_mcast *mcast, - struct ipath_mcast_qp *mqp) -{ - struct rb_node **n = &mcast_tree.rb_node; - struct rb_node *pn = NULL; - int ret; - - spin_lock_irq(&mcast_lock); - - while (*n) { - struct ipath_mcast *tmcast; - struct ipath_mcast_qp *p; - - pn = *n; - tmcast = rb_entry(pn, struct ipath_mcast, rb_node); - - ret = memcmp(mcast->mgid.raw, tmcast->mgid.raw, - sizeof(union ib_gid)); - if (ret < 0) { - n = &pn->rb_left; - continue; - } - if (ret > 0) { - n = &pn->rb_right; - continue; - } - - /* Search the QP list to see if this is already there. */ - list_for_each_entry_rcu(p, &tmcast->qp_list, list) { - if (p->qp == mqp->qp) { - ret = ESRCH; - goto bail; - } - } - if (tmcast->n_attached == ib_ipath_max_mcast_qp_attached) { - ret = ENOMEM; - goto bail; - } - - tmcast->n_attached++; - - list_add_tail_rcu(&mqp->list, &tmcast->qp_list); - ret = EEXIST; - goto bail; - } - - spin_lock(&dev->n_mcast_grps_lock); - if (dev->n_mcast_grps_allocated == ib_ipath_max_mcast_grps) { - spin_unlock(&dev->n_mcast_grps_lock); - ret = ENOMEM; - goto bail; - } - - dev->n_mcast_grps_allocated++; - spin_unlock(&dev->n_mcast_grps_lock); - - mcast->n_attached++; - - list_add_tail_rcu(&mqp->list, &mcast->qp_list); - - atomic_inc(&mcast->refcount); - rb_link_node(&mcast->rb_node, pn, n); - rb_insert_color(&mcast->rb_node, &mcast_tree); - - ret = 0; - -bail: - spin_unlock_irq(&mcast_lock); - - return ret; -} - -int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - struct ipath_qp *qp = to_iqp(ibqp); - struct ipath_ibdev *dev = to_idev(ibqp->device); - struct ipath_mcast *mcast; - struct ipath_mcast_qp *mqp; - int ret; - - /* - * Allocate data structures since its better to do this outside of - * spin locks and it will most likely be needed. - */ - mcast = ipath_mcast_alloc(gid); - if (mcast == NULL) { - ret = -ENOMEM; - goto bail; - } - mqp = ipath_mcast_qp_alloc(qp); - if (mqp == NULL) { - ipath_mcast_free(mcast); - ret = -ENOMEM; - goto bail; - } - switch (ipath_mcast_add(dev, mcast, mqp)) { - case ESRCH: - /* Neither was used: can't attach the same QP twice. */ - ipath_mcast_qp_free(mqp); - ipath_mcast_free(mcast); - ret = -EINVAL; - goto bail; - case EEXIST: /* The mcast wasn't used */ - ipath_mcast_free(mcast); - break; - case ENOMEM: - /* Exceeded the maximum number of mcast groups. */ - ipath_mcast_qp_free(mqp); - ipath_mcast_free(mcast); - ret = -ENOMEM; - goto bail; - default: - break; - } - - ret = 0; - -bail: - return ret; -} - -int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) -{ - struct ipath_qp *qp = to_iqp(ibqp); - struct ipath_ibdev *dev = to_idev(ibqp->device); - struct ipath_mcast *mcast = NULL; - struct ipath_mcast_qp *p, *tmp; - struct rb_node *n; - int last = 0; - int ret; - - spin_lock_irq(&mcast_lock); - - /* Find the GID in the mcast table. */ - n = mcast_tree.rb_node; - while (1) { - if (n == NULL) { - spin_unlock_irq(&mcast_lock); - ret = -EINVAL; - goto bail; - } - - mcast = rb_entry(n, struct ipath_mcast, rb_node); - ret = memcmp(gid->raw, mcast->mgid.raw, - sizeof(union ib_gid)); - if (ret < 0) - n = n->rb_left; - else if (ret > 0) - n = n->rb_right; - else - break; - } - - /* Search the QP list. */ - list_for_each_entry_safe(p, tmp, &mcast->qp_list, list) { - if (p->qp != qp) - continue; - /* - * We found it, so remove it, but don't poison the forward - * link until we are sure there are no list walkers. - */ - list_del_rcu(&p->list); - mcast->n_attached--; - - /* If this was the last attached QP, remove the GID too. */ - if (list_empty(&mcast->qp_list)) { - rb_erase(&mcast->rb_node, &mcast_tree); - last = 1; - } - break; - } - - spin_unlock_irq(&mcast_lock); - - if (p) { - /* - * Wait for any list walkers to finish before freeing the - * list element. - */ - wait_event(mcast->wait, atomic_read(&mcast->refcount) <= 1); - ipath_mcast_qp_free(p); - } - if (last) { - atomic_dec(&mcast->refcount); - wait_event(mcast->wait, !atomic_read(&mcast->refcount)); - ipath_mcast_free(mcast); - spin_lock_irq(&dev->n_mcast_grps_lock); - dev->n_mcast_grps_allocated--; - spin_unlock_irq(&dev->n_mcast_grps_lock); - } - - ret = 0; - -bail: - return ret; -} - -int ipath_mcast_tree_empty(void) -{ - return mcast_tree.rb_node == NULL; -} diff --git a/drivers/staging/rdma/ipath/ipath_wc_ppc64.c b/drivers/staging/rdma/ipath/ipath_wc_ppc64.c deleted file mode 100644 index 1a7e20a75149..000000000000 --- a/drivers/staging/rdma/ipath/ipath_wc_ppc64.c +++ /dev/null @@ -1,49 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * This file is conditionally built on PowerPC only. Otherwise weak symbol - * versions of the functions exported from here are used. - */ - -#include "ipath_kernel.h" - -/** - * ipath_enable_wc - enable write combining for MMIO writes to the device - * @dd: infinipath device - * - * Nothing to do on PowerPC, so just return without error. - */ -int ipath_enable_wc(struct ipath_devdata *dd) -{ - return 0; -} diff --git a/drivers/staging/rdma/ipath/ipath_wc_x86_64.c b/drivers/staging/rdma/ipath/ipath_wc_x86_64.c deleted file mode 100644 index 7b6e4c843e19..000000000000 --- a/drivers/staging/rdma/ipath/ipath_wc_x86_64.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * This file is conditionally built on x86_64 only. Otherwise weak symbol - * versions of the functions exported from here are used. - */ - -#include -#include - -#include "ipath_kernel.h" - -/** - * ipath_enable_wc - enable write combining for MMIO writes to the device - * @dd: infinipath device - * - * This routine is x86_64-specific; it twiddles the CPU's MTRRs to enable - * write combining. - */ -int ipath_enable_wc(struct ipath_devdata *dd) -{ - int ret = 0; - u64 pioaddr, piolen; - unsigned bits; - const unsigned long addr = pci_resource_start(dd->pcidev, 0); - const size_t len = pci_resource_len(dd->pcidev, 0); - - /* - * Set the PIO buffers to be WCCOMB, so we get HT bursts to the - * chip. Linux (possibly the hardware) requires it to be on a power - * of 2 address matching the length (which has to be a power of 2). - * For rev1, that means the base address, for rev2, it will be just - * the PIO buffers themselves. - * For chips with two sets of buffers, the calculations are - * somewhat more complicated; we need to sum, and the piobufbase - * register has both offsets, 2K in low 32 bits, 4K in high 32 bits. - * The buffers are still packed, so a single range covers both. - */ - if (dd->ipath_piobcnt2k && dd->ipath_piobcnt4k) { /* 2 sizes */ - unsigned long pio2kbase, pio4kbase; - pio2kbase = dd->ipath_piobufbase & 0xffffffffUL; - pio4kbase = (dd->ipath_piobufbase >> 32) & 0xffffffffUL; - if (pio2kbase < pio4kbase) { /* all, for now */ - pioaddr = addr + pio2kbase; - piolen = pio4kbase - pio2kbase + - dd->ipath_piobcnt4k * dd->ipath_4kalign; - } else { - pioaddr = addr + pio4kbase; - piolen = pio2kbase - pio4kbase + - dd->ipath_piobcnt2k * dd->ipath_palign; - } - } else { /* single buffer size (2K, currently) */ - pioaddr = addr + dd->ipath_piobufbase; - piolen = dd->ipath_piobcnt2k * dd->ipath_palign + - dd->ipath_piobcnt4k * dd->ipath_4kalign; - } - - for (bits = 0; !(piolen & (1ULL << bits)); bits++) - /* do nothing */ ; - - if (piolen != (1ULL << bits)) { - piolen >>= bits; - while (piolen >>= 1) - bits++; - piolen = 1ULL << (bits + 1); - } - if (pioaddr & (piolen - 1)) { - u64 atmp; - ipath_dbg("pioaddr %llx not on right boundary for size " - "%llx, fixing\n", - (unsigned long long) pioaddr, - (unsigned long long) piolen); - atmp = pioaddr & ~(piolen - 1); - if (atmp < addr || (atmp + piolen) > (addr + len)) { - ipath_dev_err(dd, "No way to align address/size " - "(%llx/%llx), no WC mtrr\n", - (unsigned long long) atmp, - (unsigned long long) piolen << 1); - ret = -ENODEV; - } else { - ipath_dbg("changing WC base from %llx to %llx, " - "len from %llx to %llx\n", - (unsigned long long) pioaddr, - (unsigned long long) atmp, - (unsigned long long) piolen, - (unsigned long long) piolen << 1); - pioaddr = atmp; - piolen <<= 1; - } - } - - if (!ret) { - dd->wc_cookie = arch_phys_wc_add(pioaddr, piolen); - if (dd->wc_cookie < 0) { - ipath_dev_err(dd, "Seting mtrr failed on PIO buffers\n"); - ret = -ENODEV; - } else if (dd->wc_cookie == 0) - ipath_cdbg(VERBOSE, "Set mtrr for chip to WC not needed\n"); - else - ipath_cdbg(VERBOSE, "Set mtrr for chip to WC\n"); - } - - return ret; -} - -/** - * ipath_disable_wc - disable write combining for MMIO writes to the device - * @dd: infinipath device - */ -void ipath_disable_wc(struct ipath_devdata *dd) -{ - arch_phys_wc_del(dd->wc_cookie); -} -- cgit v1.2.3 From 461c7fa126794157484dca48e88effa4963e3af3 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Tue, 2 Feb 2016 16:57:35 -0800 Subject: drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration Reduced testcase: #include #include #include #include #define SIZE 0x2000 int main() { int fd; void *p; fd = open("/dev/sg0", O_RDWR); p = mmap(NULL, SIZE, PROT_EXEC, MAP_PRIVATE | MAP_LOCKED, fd, 0); mbind(p, SIZE, 0, NULL, 0, MPOL_MF_MOVE); return 0; } We shouldn't try to migrate pages in sg VMA as we don't have a way to update Sg_scatter_hold::pages accordingly from mm core. Let's mark the VMA as VM_IO to indicate to mm core that the VMA is not migratable. Signed-off-by: Kirill A. Shutemov Reported-by: Dmitry Vyukov Acked-by: Vlastimil Babka Cc: Doug Gilbert Cc: David Rientjes Cc: Naoya Horiguchi Cc: "Kirill A. Shutemov" Cc: Shiraz Hashim Cc: Hugh Dickins Cc: Sasha Levin Cc: syzkaller Cc: Kostya Serebryany Cc: Alexander Potapenko Cc: James Bottomley Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/scsi/sg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 503ab8b46c0b..5e820674432c 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1261,7 +1261,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma) } sfp->mmap_called = 1; - vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; vma->vm_private_data = sfp; vma->vm_ops = &sg_mmap_vm_ops; return 0; -- cgit v1.2.3 From c6400ba7e13a41539342f1b6e1f9e78419cb0148 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Tue, 2 Feb 2016 16:57:55 -0800 Subject: drivers/hwspinlock: fix race between radix tree insertion and lookup of_hwspin_lock_get_id() is protected by the RCU lock, which means that insertions can occur simultaneously with the lookup. If the radix tree transitions from a height of 0, we can see a slot with the indirect_ptr bit set, which will cause us to at least read random memory, and could cause other havoc. Fix this by using the newly introduced radix_tree_iter_retry(). Signed-off-by: Matthew Wilcox Cc: Hugh Dickins Cc: Ohad Ben-Cohen Cc: Konstantin Khlebnikov Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/hwspinlock/hwspinlock_core.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c index 52f708bcf77f..d50c701b19d6 100644 --- a/drivers/hwspinlock/hwspinlock_core.c +++ b/drivers/hwspinlock/hwspinlock_core.c @@ -313,6 +313,10 @@ int of_hwspin_lock_get_id(struct device_node *np, int index) hwlock = radix_tree_deref_slot(slot); if (unlikely(!hwlock)) continue; + if (radix_tree_is_indirect_ptr(hwlock)) { + slot = radix_tree_iter_retry(&iter); + continue; + } if (hwlock->bank->dev->of_node == args.np) { ret = 0; -- cgit v1.2.3 From 58c9d61f86e86ebe1e45ac7a0cd89a2c6299b034 Mon Sep 17 00:00:00 2001 From: Tony Camuso Date: Tue, 2 Feb 2016 13:57:24 -0500 Subject: ipmi: put acpi.h with the other headers Enclosing '#include ' within '#ifdef CONFIG_ACPI' is unnecessary, since it has its own conditional compile for CONFIG_ACPI. Commit 0fbcf4af7c83 ("ipmi: Convert the IPMI SI ACPI handling to a platform device") exposed this as a problem for platforms that do not support ACPI when it introduced a call to ACPI_PTR() macro outside of the CONFIG_ACPI conditional compile. This would have been perfectly acceptable if acpi.h were not conditionally excluded for the non-acpi platform, because the conditional compile within acpi.h defines ACPI_PTR() to return NULL when compiled for non acpi platforms. Signed-off-by: Tony Camuso Fixed commit reference in header to conform to standard. Signed-off-by: Corey Minyard --- drivers/char/ipmi/ipmi_si_intf.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 9fda22e3387e..7fddd8696211 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -68,6 +68,7 @@ #include #include #include +#include #ifdef CONFIG_PARISC #include /* for register_parisc_driver() stuff */ @@ -2054,8 +2055,6 @@ static int hardcode_find_bmc(void) #ifdef CONFIG_ACPI -#include - /* * Once we get an ACPI failure, we don't try any more, because we go * through the tables sequentially. Once we don't find a table, there -- cgit v1.2.3 From a38a08dfaaab978dced63aa9cad45f0f62e23a66 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Wed, 13 Jan 2016 09:13:10 +0000 Subject: usb: phy: msm: fix error handling in probe. This driver registers for extcon events as part of its probe, but never unregisters them in case of error in the probe path. There were multiple issues noticed due to this missing error handling. One of them is random crashes if the regulators are not ready yet by the time probe is invoked. Ivan's previous attempt [1] to fix this issue, did not really address all the failure cases like regualtor/get_irq failures. [1] https://lkml.org/lkml/2015/9/7/62 Without this patch the kernel would carsh with log: ... Unable to handle kernel paging request at virtual address 17d78410 pgd = ffffffc001a5c000 [17d78410] *pgd=00000000b6806003, *pud=00000000b6806003, *pmd=0000000000000000 Internal error: Oops: 96000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6 Comm: kworker/u8:0 Not tainted 4.4.0+ #48 Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) Workqueue: deferwq deferred_probe_work_func task: ffffffc03686e900 ti: ffffffc0368b0000 task.ti: ffffffc0368b0000 PC is at raw_notifier_chain_register+0x1c/0x44 LR is at extcon_register_notifier+0x88/0xc8 pc : [] lr : [] pstate: 80000085 sp : ffffffc0368b3a70 x29: ffffffc0368b3a70 x28: ffffffc03680c310 x27: ffffffc035518000 x26: ffffffc035518000 x25: ffffffc03bfa20e0 x24: ffffffc035580a18 x23: 0000000000000000 x22: ffffffc035518458 x21: ffffffc0355e9a60 x20: ffffffc035518000 x19: 0000000000000000 x18: 0000000000000028 x17: 0000000000000003 x16: ffffffc0018153c8 x15: 0000000000000001 x14: ffffffc03686f0f8 x13: ffffffc03686f0f8 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000001 x9 : ffffffc03686f0f8 x8 : 0000e3872014c1a1 x7 : 0000000000000028 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : 00000000354fb170 x2 : 0000000017d78400 x1 : ffffffc0355e9a60 x0 : ffffffc0354fb268 Fixes: 591fc116f330 ("usb: phy: msm: Use extcon framework for VBUS and ID detection") CC: Stable Signed-off-by: Srinivas Kandagatla Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-msm-usb.c | 37 ++++++++++++++++++++++++------------- 1 file changed, 24 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index 0d19a6d61a71..970a30e155cb 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -1599,6 +1599,8 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) &motg->id.nb); if (ret < 0) { dev_err(&pdev->dev, "register ID notifier failed\n"); + extcon_unregister_notifier(motg->vbus.extcon, + EXTCON_USB, &motg->vbus.nb); return ret; } @@ -1660,15 +1662,6 @@ static int msm_otg_probe(struct platform_device *pdev) if (!motg) return -ENOMEM; - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - if (!np) - return -ENXIO; - ret = msm_otg_read_dt(pdev, motg); - if (ret) - return ret; - } - motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), GFP_KERNEL); if (!motg->phy.otg) @@ -1710,6 +1703,15 @@ static int msm_otg_probe(struct platform_device *pdev) if (!motg->regs) return -ENOMEM; + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) { + if (!np) + return -ENXIO; + ret = msm_otg_read_dt(pdev, motg); + if (ret) + return ret; + } + /* * NOTE: The PHYs can be multiplexed between the chipidea controller * and the dwc3 controller, using a single bit. It is important that @@ -1717,8 +1719,10 @@ static int msm_otg_probe(struct platform_device *pdev) */ if (motg->phy_number) { phy_select = devm_ioremap_nocache(&pdev->dev, USB2_PHY_SEL, 4); - if (!phy_select) - return -ENOMEM; + if (!phy_select) { + ret = -ENOMEM; + goto unregister_extcon; + } /* Enable second PHY with the OTG port */ writel(0x1, phy_select); } @@ -1728,7 +1732,8 @@ static int msm_otg_probe(struct platform_device *pdev) motg->irq = platform_get_irq(pdev, 0); if (motg->irq < 0) { dev_err(&pdev->dev, "platform_get_irq failed\n"); - return motg->irq; + ret = motg->irq; + goto unregister_extcon; } regs[0].supply = "vddcx"; @@ -1737,7 +1742,7 @@ static int msm_otg_probe(struct platform_device *pdev) ret = devm_regulator_bulk_get(motg->phy.dev, ARRAY_SIZE(regs), regs); if (ret) - return ret; + goto unregister_extcon; motg->vddcx = regs[0].consumer; motg->v3p3 = regs[1].consumer; @@ -1834,6 +1839,12 @@ disable_clks: clk_disable_unprepare(motg->clk); if (!IS_ERR(motg->core_clk)) clk_disable_unprepare(motg->core_clk); +unregister_extcon: + extcon_unregister_notifier(motg->id.extcon, + EXTCON_USB_HOST, &motg->id.nb); + extcon_unregister_notifier(motg->vbus.extcon, + EXTCON_USB, &motg->vbus.nb); + return ret; } -- cgit v1.2.3 From 63b121e3a3167df9fdb99633fd1c840c841b07b9 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Thu, 21 Jan 2016 15:51:26 +0800 Subject: usb: phy: mxs: declare variable with initialized value Initialize vbus_value to be 0 since it's possible not to assign any value before judgement. Acked-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-mxs-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index c2936dc48ca7..00bfea01be65 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -220,7 +220,7 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) /* Return true if the vbus is there */ static bool mxs_phy_get_vbus_status(struct mxs_phy *mxs_phy) { - unsigned int vbus_value; + unsigned int vbus_value = 0; if (!mxs_phy->regmap_anatop) return false; -- cgit v1.2.3 From 79c5623f1cb85f33403eb9f1e45124e9f56181f8 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Mon, 25 Jan 2016 13:01:29 +0100 Subject: usb: musb: ux500: Fix NULL pointer dereference at system PM The commit 7d32cdef5356 ("usb: musb: fail with error when no DMA controller set"), caused the core platform driver to correctly return an error code when fail probing. Unfurtante it also caused bug for a NULL pointer dereference, during system suspend for the ux500 driver. The reason is a lacking validation of the corresponding ->driver_data pointer, which won't be set when the musb core driver fails to probe (or haven't yet been probed). Fixes: 7d32cdef5356 ("usb: musb: fail with error when no DMA...") Acked-by: Linus Walleij Signed-off-by: Ulf Hansson Signed-off-by: Felipe Balbi --- drivers/usb/musb/ux500.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index b2685e75a683..3eaa4ba6867d 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -348,7 +348,9 @@ static int ux500_suspend(struct device *dev) struct ux500_glue *glue = dev_get_drvdata(dev); struct musb *musb = glue_to_musb(glue); - usb_phy_set_suspend(musb->xceiv, 1); + if (musb) + usb_phy_set_suspend(musb->xceiv, 1); + clk_disable_unprepare(glue->clk); return 0; @@ -366,7 +368,8 @@ static int ux500_resume(struct device *dev) return ret; } - usb_phy_set_suspend(musb->xceiv, 0); + if (musb) + usb_phy_set_suspend(musb->xceiv, 0); return 0; } -- cgit v1.2.3 From e79aee49bcf9ad005b3f2f4cf68b17dc2c22d9c2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 30 Jan 2016 12:54:29 +0100 Subject: PM: Avoid false-positive warnings in dev_pm_domain_set() There is a WARN_ON() in dev_pm_domain_set() that triggers on attempts to set the pm_domain pointer for devices with a driver bound. However, that WARN_ON() triggers on attempts to clear the pointer too and the test it uses is based on checking the device's p->knode_driver pointer which still is set when the device bus type's/driver's ->remove callback has been executed. This leads to false-positive warnings when bus type code calls dev_pm_domain_set() to clear the pm_domain pointer after invoking the driver's ->remove() callback. To avoid those false-positives, make dev_pm_domain_set() check if the pointer passed to it is NULL and skip the warning in that case. Fixes: 989561de9b51 (PM / Domains: add setter for dev.pm_domain) Signed-off-by: Rafael J. Wysocki Tested-by: Andy Shevchenko Tested-by: Sinan Kaya Tested-by: Steven Rostedt Acked-by: Ulf Hansson --- drivers/base/power/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index 93ed14cc2252..f6a9ad52cbbf 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -146,7 +146,7 @@ void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd) if (dev->pm_domain == pd) return; - WARN(device_is_bound(dev), + WARN(pd && device_is_bound(dev), "PM domains can only be changed for unbound devices\n"); dev->pm_domain = pd; device_pm_check_callbacks(dev); -- cgit v1.2.3 From 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398 Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 11 Jan 2016 16:32:14 -0800 Subject: Revert "usb: dwc2: Move reset into dwc2_get_hwparams()" This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB ethernet fails, due to being unable to pick up proper parameters when performing a plain reset before reading hw params. Below shows the results of the gnptxfsiz and hptxfsiz with and before and after reverting this (from Stefan Wahren): So here is the probe result before Patch 1 is applied: [ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host [ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000 [ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000 [ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration. [ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration. [ 1.394249] dwc2 20980000.usb: DWC OTG Controller [ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000 And here is the probe result after Patch 1 is applied: [ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host [ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000 [ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000 [ 1.434301] dwc2 20980000.usb: DWC OTG Controller [ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000 Tested-by: Heiko Stuebner Tested-by: Douglas Anderson Signed-off-by: John Youn Reported-by: Stefan Wahren Reported-by: Remi Pommarel Tested-by: Stefan Wahren Tested-by: Remi Pommarel Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 8 -------- drivers/usb/dwc2/platform.c | 8 +++++++- 2 files changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 39a0fa8a4c0a..1489d315f287 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -3278,9 +3278,6 @@ static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg) /** * During device initialization, read various hardware configuration * registers and interpret the contents. - * - * This should be called during driver probe. It will perform a core - * soft reset in order to get the reset values of the parameters. */ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) { @@ -3288,7 +3285,6 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) unsigned width; u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4; u32 grxfsiz; - int retval; /* * Attempt to ensure this device is really a DWC_otg Controller. @@ -3308,10 +3304,6 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) hw->snpsid >> 12 & 0xf, hw->snpsid >> 8 & 0xf, hw->snpsid >> 4 & 0xf, hw->snpsid & 0xf, hw->snpsid); - retval = dwc2_core_reset(hsotg); - if (retval) - return retval; - hwcfg1 = dwc2_readl(hsotg->regs + GHWCFG1); hwcfg2 = dwc2_readl(hsotg->regs + GHWCFG2); hwcfg3 = dwc2_readl(hsotg->regs + GHWCFG3); diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 510f787434b3..690b9fd98b55 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -530,7 +530,13 @@ static int dwc2_driver_probe(struct platform_device *dev) if (retval) return retval; - /* Reset the controller and detect hardware config values */ + /* + * Reset before dwc2_get_hwparams() then it could get power-on real + * reset value form registers. + */ + dwc2_core_reset_and_force_dr_mode(hsotg); + + /* Detect config values from hardware */ retval = dwc2_get_hwparams(hsotg); if (retval) goto error; -- cgit v1.2.3 From 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 11 Jan 2016 16:32:28 -0800 Subject: usb: dwc2: Fix probe problem on bcm2835 Fixes an issue found on Raspberry PI platform that prevents probe. Don't skip setting the force mode if it's already set. Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode") Tested-by: Heiko Stuebner Tested-by: Douglas Anderson Signed-off-by: John Youn Reported-by: Stefan Wahren Reported-by: Remi Pommarel Tested-by: Stefan Wahren Tested-by: Remi Pommarel Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 1489d315f287..e991d55914db 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -572,12 +572,6 @@ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) set = host ? GUSBCFG_FORCEHOSTMODE : GUSBCFG_FORCEDEVMODE; clear = host ? GUSBCFG_FORCEDEVMODE : GUSBCFG_FORCEHOSTMODE; - /* - * If the force mode bit is already set, don't set it. - */ - if ((gusbcfg & set) && !(gusbcfg & clear)) - return false; - gusbcfg &= ~clear; gusbcfg |= set; dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); -- cgit v1.2.3 From 6357b75a5c356a9d8f91c614ab72ac5264a5932c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Feb 2016 18:22:24 -0500 Subject: drm/amdgpu: disable uvd and vce clockgating on Fiji MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Doesn't work properly yet. Reviewed-by: Christian König Reviewed-by: Sonny Jiang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/vi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index d94c625575b9..89f5a1ff6f43 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -1443,8 +1443,7 @@ static int vi_common_early_init(void *handle) break; case CHIP_FIJI: adev->has_uvd = true; - adev->cg_flags = AMDGPU_CG_SUPPORT_UVD_MGCG | - AMDGPU_CG_SUPPORT_VCE_MGCG; + adev->cg_flags = 0; adev->pg_flags = 0; adev->external_rev_id = adev->rev_id + 0x3c; break; -- cgit v1.2.3 From a6835090716a85f2297668ba593bd00e1051e662 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 26 Jan 2016 17:50:04 +0200 Subject: Revert "xhci: don't finish a TD if we get a short-transfer event mid TD" This reverts commit e210c422b6fd ("xhci: don't finish a TD if we get a short transfer event mid TD") Turns out that most host controllers do not follow the xHCI specs and never send the second event for the last TRB in the TD if there was a short event mid-TD. Returning the URB directly after the first short-transfer event is far better than never returning the URB. (class drivers usually timeout after 30sec). For the hosts that do send the second event we will go back to treating it as misplaced event and print an error message for it. The origial patch was sent to stable kernels and needs to be reverted from there as well Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index f1c21c40b4a6..3915657e6078 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2193,10 +2193,6 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td, } /* Fast path - was this the last TRB in the TD for this URB? */ } else if (event_trb == td->last_trb) { - if (td->urb_length_set && trb_comp_code == COMP_SHORT_TX) - return finish_td(xhci, td, event_trb, event, ep, - status, false); - if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { td->urb->actual_length = td->urb->transfer_buffer_length - @@ -2248,12 +2244,6 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td, td->urb->actual_length += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) - EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); - - if (trb_comp_code == COMP_SHORT_TX) { - xhci_dbg(xhci, "mid bulk/intr SP, wait for last TRB event\n"); - td->urb_length_set = true; - return 0; - } } return finish_td(xhci, td, event_trb, event, ep, status, false); -- cgit v1.2.3 From 6a4290cc28be12d72d50644bd4bda1aede37cd41 Mon Sep 17 00:00:00 2001 From: Jianqiang Tang Date: Wed, 20 Jan 2016 14:09:39 +0800 Subject: usb: dwc3: gadget: set the OTG flag in dwc3 gadget driver. This patch is needed in order to pass one test case defined in the OTG Automated Compliance Test specification. Specification location: http://www.usb.org/developers/onthego/otgeh_compliance_plan_1_2.pdf This test case uses PET Tool, and PET Tool is one USB hardware equipment provided by MQP Electronics. Test case id is 6.8.3 B-UUT Bypass Capacitance. We must set this otg flag in order to be able to return OTG descriptor during enumeration, otherwise this test case with failed with below error: "Get OTG descriptor request stalled". Signed-off-by: Jianqiang Tang Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index af023a81a0b0..7d1dd82a95ac 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2789,6 +2789,7 @@ int dwc3_gadget_init(struct dwc3 *dwc) dwc->gadget.speed = USB_SPEED_UNKNOWN; dwc->gadget.sg_supported = true; dwc->gadget.name = "dwc3-gadget"; + dwc->gadget.is_otg = dwc->dr_mode == USB_DR_MODE_OTG; /* * FIXME We might be setting max_speed to Date: Tue, 26 Jan 2016 17:50:05 +0200 Subject: usb: xhci: handle both SSIC ports in PME stuck quirk Commit abce329c27b3 ("xhci: Workaround to get D3 working in Intel xHCI") adds a workaround for a limitation of PME storm caused by SSIC port in some Intel SoCs. This commit only handled one SSIC port, while there are actually two SSIC ports in the chips. This patch handles both SSIC ports. Without this fix, users still see PME storm. Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Zhuang Jin Can Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 48 +++++++++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 58c43ed7ff3b..67471fb28de5 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -28,7 +28,9 @@ #include "xhci.h" #include "xhci-trace.h" -#define PORT2_SSIC_CONFIG_REG2 0x883c +#define SSIC_PORT_NUM 2 +#define SSIC_PORT_CFG2 0x880c +#define SSIC_PORT_CFG2_OFFSET 0x30 #define PROG_DONE (1 << 30) #define SSIC_PORT_UNUSED (1 << 31) @@ -321,28 +323,36 @@ static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend) struct pci_dev *pdev = to_pci_dev(hcd->self.controller); u32 val; void __iomem *reg; + int i; if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { - reg = (void __iomem *) xhci->cap_regs + PORT2_SSIC_CONFIG_REG2; - - /* Notify SSIC that SSIC profile programming is not done */ - val = readl(reg) & ~PROG_DONE; - writel(val, reg); - - /* Mark SSIC port as unused(suspend) or used(resume) */ - val = readl(reg); - if (suspend) - val |= SSIC_PORT_UNUSED; - else - val &= ~SSIC_PORT_UNUSED; - writel(val, reg); - - /* Notify SSIC that SSIC profile programming is done */ - val = readl(reg) | PROG_DONE; - writel(val, reg); - readl(reg); + for (i = 0; i < SSIC_PORT_NUM; i++) { + reg = (void __iomem *) xhci->cap_regs + + SSIC_PORT_CFG2 + + i * SSIC_PORT_CFG2_OFFSET; + + /* + * Notify SSIC that SSIC profile programming + * is not done. + */ + val = readl(reg) & ~PROG_DONE; + writel(val, reg); + + /* Mark SSIC port as unused(suspend) or used(resume) */ + val = readl(reg); + if (suspend) + val |= SSIC_PORT_UNUSED; + else + val &= ~SSIC_PORT_UNUSED; + writel(val, reg); + + /* Notify SSIC that SSIC profile programming is done */ + val = readl(reg) | PROG_DONE; + writel(val, reg); + readl(reg); + } } reg = (void __iomem *) xhci->cap_regs + 0x80a4; -- cgit v1.2.3 From 7e70cbffe236721051bbaff965e477df06dcb190 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 26 Jan 2016 17:50:06 +0200 Subject: usb: xhci: add a quirk bit for ssic port unused Two workarounds introduced by commit b8cb91e058cd ("xhci: Workaround for PME stuck issues in Intel xhci") and commit abce329c27b3 ("xhci: Workaround to get D3 working in Intel xHCI") share a single quirk bit XHCI_PME_STUCK_QUIRK. These two workarounds actually are different and might happen on different hardwares. Need to separate them by adding a quirk bit for the later. Cc: stable@vger.kernel.org Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 79 ++++++++++++++++++++++++++------------------- drivers/usb/host/xhci.h | 1 + 2 files changed, 46 insertions(+), 34 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 67471fb28de5..86377a0955e6 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -156,6 +156,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) { xhci->quirks |= XHCI_PME_STUCK_QUIRK; } + if (pdev->vendor == PCI_VENDOR_ID_INTEL && + pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { + xhci->quirks |= XHCI_SSIC_PORT_UNUSED; + } if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_EJ168) { xhci->quirks |= XHCI_RESET_ON_RESUME; @@ -314,46 +318,47 @@ static void xhci_pci_remove(struct pci_dev *dev) * SSIC PORT need to be marked as "unused" before putting xHCI * into D3. After D3 exit, the SSIC port need to be marked as "used". * Without this change, xHCI might not enter D3 state. - * Make sure PME works on some Intel xHCI controllers by writing 1 to clear - * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4 */ -static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend) +static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); - struct pci_dev *pdev = to_pci_dev(hcd->self.controller); u32 val; void __iomem *reg; int i; - if (pdev->vendor == PCI_VENDOR_ID_INTEL && - pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { - - for (i = 0; i < SSIC_PORT_NUM; i++) { - reg = (void __iomem *) xhci->cap_regs + - SSIC_PORT_CFG2 + - i * SSIC_PORT_CFG2_OFFSET; - - /* - * Notify SSIC that SSIC profile programming - * is not done. - */ - val = readl(reg) & ~PROG_DONE; - writel(val, reg); - - /* Mark SSIC port as unused(suspend) or used(resume) */ - val = readl(reg); - if (suspend) - val |= SSIC_PORT_UNUSED; - else - val &= ~SSIC_PORT_UNUSED; - writel(val, reg); - - /* Notify SSIC that SSIC profile programming is done */ - val = readl(reg) | PROG_DONE; - writel(val, reg); - readl(reg); - } + for (i = 0; i < SSIC_PORT_NUM; i++) { + reg = (void __iomem *) xhci->cap_regs + + SSIC_PORT_CFG2 + + i * SSIC_PORT_CFG2_OFFSET; + + /* Notify SSIC that SSIC profile programming is not done. */ + val = readl(reg) & ~PROG_DONE; + writel(val, reg); + + /* Mark SSIC port as unused(suspend) or used(resume) */ + val = readl(reg); + if (suspend) + val |= SSIC_PORT_UNUSED; + else + val &= ~SSIC_PORT_UNUSED; + writel(val, reg); + + /* Notify SSIC that SSIC profile programming is done */ + val = readl(reg) | PROG_DONE; + writel(val, reg); + readl(reg); } +} + +/* + * Make sure PME works on some Intel xHCI controllers by writing 1 to clear + * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4 + */ +static void xhci_pme_quirk(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + void __iomem *reg; + u32 val; reg = (void __iomem *) xhci->cap_regs + 0x80a4; val = readl(reg); @@ -374,7 +379,10 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) pdev->no_d3cold = true; if (xhci->quirks & XHCI_PME_STUCK_QUIRK) - xhci_pme_quirk(hcd, true); + xhci_pme_quirk(hcd); + + if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) + xhci_ssic_port_unused_quirk(hcd, true); return xhci_suspend(xhci, do_wakeup); } @@ -406,8 +414,11 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) if (pdev->vendor == PCI_VENDOR_ID_INTEL) usb_enable_intel_xhci_ports(pdev); + if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) + xhci_ssic_port_unused_quirk(hcd, false); + if (xhci->quirks & XHCI_PME_STUCK_QUIRK) - xhci_pme_quirk(hcd, false); + xhci_pme_quirk(hcd); retval = xhci_resume(xhci, hibernated); return retval; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 9be7348872ba..cc651383ce5a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1631,6 +1631,7 @@ struct xhci_hcd { #define XHCI_BROKEN_STREAMS (1 << 19) #define XHCI_PME_STUCK_QUIRK (1 << 20) #define XHCI_MTK_HOST (1 << 21) +#define XHCI_SSIC_PORT_UNUSED (1 << 22) unsigned int num_active_eps; unsigned int limit_active_eps; /* There are two roothubs to keep track of bus suspend info for */ -- cgit v1.2.3 From 92149c930cce1865d0d4aca2ab07c2b4b197b418 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 26 Jan 2016 17:50:07 +0200 Subject: usb: xhci: set SSIC port unused only if xhci_suspend succeeds XHCI_SSIC_PORT_UNUSED quirk was applied to the xHCI host controllers in some Intel SoC chips. With this quirk applied, SSIC port is set to "unused" prior to xhci_suspend(). This may cause problem if host fails to suspend. In this case, the port is set to unused without host further entering D3, and the port will not be usable anymore. Cc: stable@vger.kernel.org Signed-off-by: Zhuang Jin Can Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 86377a0955e6..7ee1d0f6891c 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -370,6 +370,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + int ret; /* * Systems with the TI redriver that loses port status change events @@ -384,7 +385,11 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) xhci_ssic_port_unused_quirk(hcd, true); - return xhci_suspend(xhci, do_wakeup); + ret = xhci_suspend(xhci, do_wakeup); + if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED)) + xhci_ssic_port_unused_quirk(hcd, false); + + return ret; } static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) -- cgit v1.2.3 From ccc04afb72cddbdf7c0e1c17e92886405a71b754 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 26 Jan 2016 17:50:08 +0200 Subject: usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Broxton-M platforms Intel Broxton M was verifed to require XHCI_PME_STUCK_QUIRK quirk as well. Cc: stable@vger.kernel.org Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 7ee1d0f6891c..f0640b7a1c42 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -47,6 +47,7 @@ #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f +#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8 static const char hcd_name[] = "xhci_hcd"; @@ -153,7 +154,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) if (pdev->vendor == PCI_VENDOR_ID_INTEL && (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI || - pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) { + pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || + pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) { xhci->quirks |= XHCI_PME_STUCK_QUIRK; } if (pdev->vendor == PCI_VENDOR_ID_INTEL && -- cgit v1.2.3 From b765a16a11fad6b9c94fea7718c22692581e8d18 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Tue, 26 Jan 2016 17:50:09 +0200 Subject: usb: xhci-mtk: fix bpkts value of LS/HS periodic eps not behind TT when a LS or FS device doesn't connect though a HS hub, the @bPkts field of its periodic endpoint context should be set to 1. Signed-off-by: Chunfeng Yun Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mtk-sch.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index c30de7c39f44..73f763c4f5f5 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -275,8 +275,9 @@ static bool need_bw_sch(struct usb_host_endpoint *ep, return false; /* - * for LS & FS periodic endpoints which its device don't attach - * to TT are also ignored, root-hub will schedule them directly + * for LS & FS periodic endpoints which its device is not behind + * a TT are also ignored, root-hub will schedule them directly, + * but need set @bpkts field of endpoint context to 1. */ if (is_fs_or_ls(speed) && !has_tt) return false; @@ -339,8 +340,17 @@ int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev, GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)), usb_endpoint_dir_in(&ep->desc), ep); - if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT)) + if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT)) { + /* + * set @bpkts to 1 if it is LS or FS periodic endpoint, and its + * device does not connected through an external HS hub + */ + if (usb_endpoint_xfer_int(&ep->desc) + || usb_endpoint_xfer_isoc(&ep->desc)) + ep_ctx->reserved[0] |= cpu_to_le32(EP_BPKTS(1)); + return 0; + } bw_index = get_bw_index(xhci, udev, ep); sch_bw = &sch_array[bw_index]; -- cgit v1.2.3 From 882fa27f488ed3c4b67699d99e8c5ff64c7a9cd1 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Tue, 26 Jan 2016 17:50:10 +0200 Subject: usb: xhci-mtk: fix AHB bus hang up caused by roothubs polling when ip fails to enter sleep mode, register access protection will be disabled, at the same time if all clocks are disabled, access register will hang up AHB bus. the common case causes ip sleep failure is that after all ports enter U3 but before ip enters sleep mode, a port receives a resume signal('K'). this will happens when such as clicks mouse to try to do remote-wakeup to stop system enter suspend. so stop polling root hubs to avoid access xHCI register on bus suspend, and restart it when bus resumes. Signed-off-by: Chunfeng Yun Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mtk.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index c9ab6a44c34a..9532f5aef71b 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -696,9 +696,24 @@ static int xhci_mtk_remove(struct platform_device *dev) } #ifdef CONFIG_PM_SLEEP +/* + * if ip sleep fails, and all clocks are disabled, access register will hang + * AHB bus, so stop polling roothubs to avoid regs access on bus suspend. + * and no need to check whether ip sleep failed or not; this will cause SPM + * to wake up system immediately after system suspend complete if ip sleep + * fails, it is what we wanted. + */ static int xhci_mtk_suspend(struct device *dev) { struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct usb_hcd *hcd = mtk->hcd; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + xhci_dbg(xhci, "%s: stop port polling\n", __func__); + clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); + del_timer_sync(&hcd->rh_timer); + clear_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); + del_timer_sync(&xhci->shared_hcd->rh_timer); xhci_mtk_host_disable(mtk); xhci_mtk_phy_power_off(mtk); @@ -710,11 +725,19 @@ static int xhci_mtk_suspend(struct device *dev) static int xhci_mtk_resume(struct device *dev) { struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct usb_hcd *hcd = mtk->hcd; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); usb_wakeup_disable(mtk); xhci_mtk_clks_enable(mtk); xhci_mtk_phy_power_on(mtk); xhci_mtk_host_enable(mtk); + + xhci_dbg(xhci, "%s: restart port polling\n", __func__); + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); + usb_hcd_poll_rh_status(hcd); + set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); + usb_hcd_poll_rh_status(xhci->shared_hcd); return 0; } -- cgit v1.2.3 From 2ad294d5f9d13d108c1e2f1a4be8542859ead134 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Tue, 26 Jan 2016 17:50:11 +0200 Subject: usb: host: xhci-plat: fix NULL pointer in probe for device tree case During probe, in the device tree case, the data pointer associated to a compatible is dereferenced. However, not all the compatibles are associated to a private data pointer. The generic-xhci and the xhci-platform don't need them, this patch adds a test on the data pointer before accessing it, avoiding a kernel crash. Fixes: 4efb2f694114 ("usb: host: xhci-plat: add struct xhci_plat_priv") Cc: stable@vger.kernel.org Signed-off-by: Gregory CLEMENT Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-plat.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 770b6b088797..d39d6bf1d090 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -184,7 +184,8 @@ static int xhci_plat_probe(struct platform_device *pdev) struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); /* Just copy data for now */ - *priv = *priv_match; + if (priv_match) + *priv = *priv_match; } if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_MARVELL_ARMADA)) { -- cgit v1.2.3 From 5c82171167adb8e4ac77b91a42cd49fb211a81a0 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Tue, 26 Jan 2016 17:50:12 +0200 Subject: xhci: Fix list corruption in urb dequeue at host removal xhci driver frees data for all devices, both usb2 and and usb3 the first time usb_remove_hcd() is called, including td_list and and xhci_ring structures. When usb_remove_hcd() is called a second time for the second xhci bus it will try to dequeue all pending urbs, and touches td_list which is already freed for that endpoint. Cc: Reported-by: Joe Lawrence Tested-by: Joe Lawrence Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 26a44c0e969e..0c8087d3c313 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1554,7 +1554,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "HW died, freeing TD."); urb_priv = urb->hcpriv; - for (i = urb_priv->td_cnt; i < urb_priv->length; i++) { + for (i = urb_priv->td_cnt; + i < urb_priv->length && xhci->devs[urb->dev->slot_id]; + i++) { td = urb_priv->td[i]; if (!list_empty(&td->td_list)) list_del_init(&td->td_list); -- cgit v1.2.3 From febe562c20dfa8f33bee7d419c6b517986a5aa33 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 11 Jan 2016 21:31:09 -0800 Subject: target: Fix LUN_RESET active I/O handling for ACK_KREF This patch fixes a NULL pointer se_cmd->cmd_kref < 0 refcount bug during TMR LUN_RESET with active se_cmd I/O, that can be triggered during se_cmd descriptor shutdown + release via core_tmr_drain_state_list() code. To address this bug, add common __target_check_io_state() helper for ABORT_TASK + LUN_RESET w/ CMD_T_COMPLETE checking, and set CMD_T_ABORTED + obtain ->cmd_kref for both cases ahead of last target_put_sess_cmd() after TFO->aborted_task() -> transport_cmd_finish_abort() callback has completed. It also introduces SCF_ACK_KREF to determine when transport_cmd_finish_abort() needs to drop the second extra reference, ahead of calling target_put_sess_cmd() for the final kref_put(&se_cmd->cmd_kref). It also updates transport_cmd_check_stop() to avoid holding se_cmd->t_state_lock while dropping se_cmd device state via target_remove_from_state_list(), now that core_tmr_drain_state_list() is holding the se_device lock while checking se_cmd state from within TMR logic. Finally, move transport_put_cmd() release of SGL + TMR + extended CDB memory into target_free_cmd_mem() in order to avoid potential resource leaks in TMR ABORT_TASK + LUN_RESET code-paths. Also update target_release_cmd_kref() accordingly. Reviewed-by: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tmr.c | 69 ++++++++++++++++++++++------------ drivers/target/target_core_transport.c | 67 ++++++++++++++------------------- 2 files changed, 75 insertions(+), 61 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index fcdcb117c60d..fb3decc28589 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -107,6 +107,34 @@ static int target_check_cdb_and_preempt(struct list_head *list, return 1; } +static bool __target_check_io_state(struct se_cmd *se_cmd) +{ + struct se_session *sess = se_cmd->se_sess; + + assert_spin_locked(&sess->sess_cmd_lock); + WARN_ON_ONCE(!irqs_disabled()); + /* + * If command already reached CMD_T_COMPLETE state within + * target_complete_cmd(), this se_cmd has been passed to + * fabric driver and will not be aborted. + * + * Otherwise, obtain a local se_cmd->cmd_kref now for TMR + * ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as + * long as se_cmd->cmd_kref is still active unless zero. + */ + spin_lock(&se_cmd->t_state_lock); + if (se_cmd->transport_state & CMD_T_COMPLETE) { + pr_debug("Attempted to abort io tag: %llu already complete," + " skipping\n", se_cmd->tag); + spin_unlock(&se_cmd->t_state_lock); + return false; + } + se_cmd->transport_state |= CMD_T_ABORTED; + spin_unlock(&se_cmd->t_state_lock); + + return kref_get_unless_zero(&se_cmd->cmd_kref); +} + void core_tmr_abort_task( struct se_device *dev, struct se_tmr_req *tmr, @@ -130,34 +158,22 @@ void core_tmr_abort_task( if (tmr->ref_task_tag != ref_tag) continue; - if (!kref_get_unless_zero(&se_cmd->cmd_kref)) - continue; - printk("ABORT_TASK: Found referenced %s task_tag: %llu\n", se_cmd->se_tfo->get_fabric_name(), ref_tag); - spin_lock(&se_cmd->t_state_lock); - if (se_cmd->transport_state & CMD_T_COMPLETE) { - printk("ABORT_TASK: ref_tag: %llu already complete," - " skipping\n", ref_tag); - spin_unlock(&se_cmd->t_state_lock); + if (!__target_check_io_state(se_cmd)) { spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); - target_put_sess_cmd(se_cmd); - goto out; } - se_cmd->transport_state |= CMD_T_ABORTED; - spin_unlock(&se_cmd->t_state_lock); - list_del_init(&se_cmd->se_cmd_list); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); cancel_work_sync(&se_cmd->work); transport_wait_for_tasks(se_cmd); - target_put_sess_cmd(se_cmd); transport_cmd_finish_abort(se_cmd, true); + target_put_sess_cmd(se_cmd); printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for" " ref_tag: %llu\n", ref_tag); @@ -242,8 +258,10 @@ static void core_tmr_drain_state_list( struct list_head *preempt_and_abort_list) { LIST_HEAD(drain_task_list); + struct se_session *sess; struct se_cmd *cmd, *next; unsigned long flags; + int rc; /* * Complete outstanding commands with TASK_ABORTED SAM status. @@ -282,6 +300,16 @@ static void core_tmr_drain_state_list( if (prout_cmd == cmd) continue; + sess = cmd->se_sess; + if (WARN_ON_ONCE(!sess)) + continue; + + spin_lock(&sess->sess_cmd_lock); + rc = __target_check_io_state(cmd); + spin_unlock(&sess->sess_cmd_lock); + if (!rc) + continue; + list_move_tail(&cmd->state_list, &drain_task_list); cmd->state_active = false; } @@ -289,7 +317,7 @@ static void core_tmr_drain_state_list( while (!list_empty(&drain_task_list)) { cmd = list_entry(drain_task_list.next, struct se_cmd, state_list); - list_del(&cmd->state_list); + list_del_init(&cmd->state_list); pr_debug("LUN_RESET: %s cmd: %p" " ITT/CmdSN: 0x%08llx/0x%08x, i_state: %d, t_state: %d" @@ -313,16 +341,11 @@ static void core_tmr_drain_state_list( * loop above, but we do it down here given that * cancel_work_sync may block. */ - if (cmd->t_state == TRANSPORT_COMPLETE) - cancel_work_sync(&cmd->work); - - spin_lock_irqsave(&cmd->t_state_lock, flags); - target_stop_cmd(cmd, &flags); - - cmd->transport_state |= CMD_T_ABORTED; - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + cancel_work_sync(&cmd->work); + transport_wait_for_tasks(cmd); core_tmr_handle_tas_abort(tmr_nacl, cmd, tas); + target_put_sess_cmd(cmd); } } diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 9f3608e10f25..af52f8bd8954 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -534,9 +534,6 @@ void transport_deregister_session(struct se_session *se_sess) } EXPORT_SYMBOL(transport_deregister_session); -/* - * Called with cmd->t_state_lock held. - */ static void target_remove_from_state_list(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; @@ -561,10 +558,6 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists, { unsigned long flags; - spin_lock_irqsave(&cmd->t_state_lock, flags); - if (write_pending) - cmd->t_state = TRANSPORT_WRITE_PENDING; - if (remove_from_lists) { target_remove_from_state_list(cmd); @@ -574,6 +567,10 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists, cmd->se_lun = NULL; } + spin_lock_irqsave(&cmd->t_state_lock, flags); + if (write_pending) + cmd->t_state = TRANSPORT_WRITE_PENDING; + /* * Determine if frontend context caller is requesting the stopping of * this command for frontend exceptions. @@ -627,6 +624,8 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd) void transport_cmd_finish_abort(struct se_cmd *cmd, int remove) { + bool ack_kref = (cmd->se_cmd_flags & SCF_ACK_KREF); + if (cmd->se_cmd_flags & SCF_SE_LUN_CMD) transport_lun_remove_cmd(cmd); /* @@ -638,7 +637,7 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove) if (transport_cmd_check_stop_to_fabric(cmd)) return; - if (remove) + if (remove && ack_kref) transport_put_cmd(cmd); } @@ -706,7 +705,7 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) * Check for case where an explicit ABORT_TASK has been received * and transport_wait_for_tasks() will be waiting for completion.. */ - if (cmd->transport_state & CMD_T_ABORTED && + if (cmd->transport_state & CMD_T_ABORTED || cmd->transport_state & CMD_T_STOP) { spin_unlock_irqrestore(&cmd->t_state_lock, flags); complete_all(&cmd->t_transport_stop_comp); @@ -2222,20 +2221,14 @@ static inline void transport_free_pages(struct se_cmd *cmd) } /** - * transport_release_cmd - free a command - * @cmd: command to free + * transport_put_cmd - release a reference to a command + * @cmd: command to release * - * This routine unconditionally frees a command, and reference counting - * or list removal must be done in the caller. + * This routine releases our reference to the command and frees it if possible. */ -static int transport_release_cmd(struct se_cmd *cmd) +static int transport_put_cmd(struct se_cmd *cmd) { BUG_ON(!cmd->se_tfo); - - if (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) - core_tmr_release_req(cmd->se_tmr_req); - if (cmd->t_task_cdb != cmd->__t_task_cdb) - kfree(cmd->t_task_cdb); /* * If this cmd has been setup with target_get_sess_cmd(), drop * the kref and call ->release_cmd() in kref callback. @@ -2243,18 +2236,6 @@ static int transport_release_cmd(struct se_cmd *cmd) return target_put_sess_cmd(cmd); } -/** - * transport_put_cmd - release a reference to a command - * @cmd: command to release - * - * This routine releases our reference to the command and frees it if possible. - */ -static int transport_put_cmd(struct se_cmd *cmd) -{ - transport_free_pages(cmd); - return transport_release_cmd(cmd); -} - void *transport_kmap_data_sg(struct se_cmd *cmd) { struct scatterlist *sg = cmd->t_data_sg; @@ -2452,14 +2433,13 @@ static void transport_write_pending_qf(struct se_cmd *cmd) int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) { - unsigned long flags; int ret = 0; if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) { if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) - transport_wait_for_tasks(cmd); + transport_wait_for_tasks(cmd); - ret = transport_release_cmd(cmd); + ret = transport_put_cmd(cmd); } else { if (wait_for_tasks) transport_wait_for_tasks(cmd); @@ -2468,11 +2448,8 @@ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) * has already added se_cmd to state_list, but fabric has * failed command before I/O submission. */ - if (cmd->state_active) { - spin_lock_irqsave(&cmd->t_state_lock, flags); + if (cmd->state_active) target_remove_from_state_list(cmd); - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - } if (cmd->se_lun) transport_lun_remove_cmd(cmd); @@ -2517,6 +2494,16 @@ out: } EXPORT_SYMBOL(target_get_sess_cmd); +static void target_free_cmd_mem(struct se_cmd *cmd) +{ + transport_free_pages(cmd); + + if (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) + core_tmr_release_req(cmd->se_tmr_req); + if (cmd->t_task_cdb != cmd->__t_task_cdb) + kfree(cmd->t_task_cdb); +} + static void target_release_cmd_kref(struct kref *kref) { struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref); @@ -2526,17 +2513,20 @@ static void target_release_cmd_kref(struct kref *kref) spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); if (list_empty(&se_cmd->se_cmd_list)) { spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + target_free_cmd_mem(se_cmd); se_cmd->se_tfo->release_cmd(se_cmd); return; } if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) { spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + target_free_cmd_mem(se_cmd); complete(&se_cmd->cmd_wait_comp); return; } list_del(&se_cmd->se_cmd_list); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + target_free_cmd_mem(se_cmd); se_cmd->se_tfo->release_cmd(se_cmd); } @@ -2548,6 +2538,7 @@ int target_put_sess_cmd(struct se_cmd *se_cmd) struct se_session *se_sess = se_cmd->se_sess; if (!se_sess) { + target_free_cmd_mem(se_cmd); se_cmd->se_tfo->release_cmd(se_cmd); return 1; } -- cgit v1.2.3 From a6d9bb1c9605cd4f44e2d8290dc4d0e88f20292d Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 11 Jan 2016 21:53:05 -0800 Subject: target: Fix LUN_RESET active TMR descriptor handling This patch fixes a NULL pointer se_cmd->cmd_kref < 0 refcount bug during TMR LUN_RESET with active TMRs, triggered during se_cmd + se_tmr_req descriptor shutdown + release via core_tmr_drain_tmr_list(). To address this bug, go ahead and obtain a local kref_get_unless_zero(&se_cmd->cmd_kref) for active I/O to set CMD_T_ABORTED, and transport_wait_for_tasks() followed by the final target_put_sess_cmd() to drop the local ->cmd_kref. Also add two new checks within target_tmr_work() to avoid CMD_T_ABORTED -> TFO->queue_tm_rsp() callbacks ahead of invoking the backend -> fabric put in transport_cmd_check_stop_to_fabric(). For good measure, also change core_tmr_release_req() to use list_del_init() ahead of se_tmr_req memory free. Reviewed-by: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tmr.c | 22 +++++++++++++++++++++- drivers/target/target_core_transport.c | 17 +++++++++++++++++ 2 files changed, 38 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index fb3decc28589..072af07bd2ff 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -68,7 +68,7 @@ void core_tmr_release_req(struct se_tmr_req *tmr) if (dev) { spin_lock_irqsave(&dev->se_tmr_lock, flags); - list_del(&tmr->tmr_list); + list_del_init(&tmr->tmr_list); spin_unlock_irqrestore(&dev->se_tmr_lock, flags); } @@ -194,9 +194,11 @@ static void core_tmr_drain_tmr_list( struct list_head *preempt_and_abort_list) { LIST_HEAD(drain_tmr_list); + struct se_session *sess; struct se_tmr_req *tmr_p, *tmr_pp; struct se_cmd *cmd; unsigned long flags; + bool rc; /* * Release all pending and outgoing TMRs aside from the received * LUN_RESET tmr.. @@ -222,17 +224,31 @@ static void core_tmr_drain_tmr_list( if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) continue; + sess = cmd->se_sess; + if (WARN_ON_ONCE(!sess)) + continue; + + spin_lock(&sess->sess_cmd_lock); spin_lock(&cmd->t_state_lock); if (!(cmd->transport_state & CMD_T_ACTIVE)) { spin_unlock(&cmd->t_state_lock); + spin_unlock(&sess->sess_cmd_lock); continue; } if (cmd->t_state == TRANSPORT_ISTATE_PROCESSING) { spin_unlock(&cmd->t_state_lock); + spin_unlock(&sess->sess_cmd_lock); continue; } + cmd->transport_state |= CMD_T_ABORTED; spin_unlock(&cmd->t_state_lock); + rc = kref_get_unless_zero(&cmd->cmd_kref); + spin_unlock(&sess->sess_cmd_lock); + if (!rc) { + printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n"); + continue; + } list_move_tail(&tmr_p->tmr_list, &drain_tmr_list); } spin_unlock_irqrestore(&dev->se_tmr_lock, flags); @@ -246,7 +262,11 @@ static void core_tmr_drain_tmr_list( (preempt_and_abort_list) ? "Preempt" : "", tmr_p, tmr_p->function, tmr_p->response, cmd->t_state); + cancel_work_sync(&cmd->work); + transport_wait_for_tasks(cmd); + transport_cmd_finish_abort(cmd, 1); + target_put_sess_cmd(cmd); } } diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index af52f8bd8954..94e372af9e28 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2900,8 +2900,17 @@ static void target_tmr_work(struct work_struct *work) struct se_cmd *cmd = container_of(work, struct se_cmd, work); struct se_device *dev = cmd->se_dev; struct se_tmr_req *tmr = cmd->se_tmr_req; + unsigned long flags; int ret; + spin_lock_irqsave(&cmd->t_state_lock, flags); + if (cmd->transport_state & CMD_T_ABORTED) { + tmr->response = TMR_FUNCTION_REJECTED; + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + goto check_stop; + } + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + switch (tmr->function) { case TMR_ABORT_TASK: core_tmr_abort_task(dev, tmr, cmd->se_sess); @@ -2934,9 +2943,17 @@ static void target_tmr_work(struct work_struct *work) break; } + spin_lock_irqsave(&cmd->t_state_lock, flags); + if (cmd->transport_state & CMD_T_ABORTED) { + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + goto check_stop; + } cmd->t_state = TRANSPORT_ISTATE_PROCESSING; + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + cmd->se_tfo->queue_tm_rsp(cmd); +check_stop: transport_cmd_check_stop_to_fabric(cmd); } -- cgit v1.2.3 From ebde1ca5a908b10312db4ecd7553e3ba039319ab Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Sat, 16 Jan 2016 12:49:49 -0800 Subject: target: Fix TAS handling for multi-session se_node_acls This patch fixes a bug in TMR task aborted status (TAS) handling when multiple sessions are connected to the same target WWPN endpoint and se_node_acl descriptor, resulting in TASK_ABORTED status to not be generated for aborted se_cmds on the remote port. This is due to core_tmr_handle_tas_abort() incorrectly comparing se_node_acl instead of se_session, for which the multi-session case is expected to be sharing the same se_node_acl. Instead, go ahead and update core_tmr_handle_tas_abort() to compare tmr_sess + cmd->se_sess in order to determine if the LUN_RESET was received on a different I_T nexus, and TASK_ABORTED status response needs to be generated. Reviewed-by: Christoph Hellwig Cc: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tmr.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index 072af07bd2ff..3e0d77a4c7b6 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -76,7 +76,7 @@ void core_tmr_release_req(struct se_tmr_req *tmr) } static void core_tmr_handle_tas_abort( - struct se_node_acl *tmr_nacl, + struct se_session *tmr_sess, struct se_cmd *cmd, int tas) { @@ -84,7 +84,7 @@ static void core_tmr_handle_tas_abort( /* * TASK ABORTED status (TAS) bit support */ - if ((tmr_nacl && (tmr_nacl != cmd->se_sess->se_node_acl)) && tas) { + if (tmr_sess && tmr_sess != cmd->se_sess && tas) { remove = false; transport_send_task_abort(cmd); } @@ -273,7 +273,7 @@ static void core_tmr_drain_tmr_list( static void core_tmr_drain_state_list( struct se_device *dev, struct se_cmd *prout_cmd, - struct se_node_acl *tmr_nacl, + struct se_session *tmr_sess, int tas, struct list_head *preempt_and_abort_list) { @@ -364,7 +364,7 @@ static void core_tmr_drain_state_list( cancel_work_sync(&cmd->work); transport_wait_for_tasks(cmd); - core_tmr_handle_tas_abort(tmr_nacl, cmd, tas); + core_tmr_handle_tas_abort(tmr_sess, cmd, tas); target_put_sess_cmd(cmd); } } @@ -377,6 +377,7 @@ int core_tmr_lun_reset( { struct se_node_acl *tmr_nacl = NULL; struct se_portal_group *tmr_tpg = NULL; + struct se_session *tmr_sess = NULL; int tas; /* * TASK_ABORTED status bit, this is configurable via ConfigFS @@ -395,8 +396,9 @@ int core_tmr_lun_reset( * or struct se_device passthrough.. */ if (tmr && tmr->task_cmd && tmr->task_cmd->se_sess) { - tmr_nacl = tmr->task_cmd->se_sess->se_node_acl; - tmr_tpg = tmr->task_cmd->se_sess->se_tpg; + tmr_sess = tmr->task_cmd->se_sess; + tmr_nacl = tmr_sess->se_node_acl; + tmr_tpg = tmr_sess->se_tpg; if (tmr_nacl && tmr_tpg) { pr_debug("LUN_RESET: TMR caller fabric: %s" " initiator port %s\n", @@ -409,7 +411,7 @@ int core_tmr_lun_reset( dev->transport->name, tas); core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list); - core_tmr_drain_state_list(dev, prout_cmd, tmr_nacl, tas, + core_tmr_drain_state_list(dev, prout_cmd, tmr_sess, tas, preempt_and_abort_list); /* -- cgit v1.2.3 From e8beb02343e7582980c6705816cd957cf4f74c7a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 3 Feb 2016 17:33:48 -0200 Subject: [media] tda1004x: only update the frontend properties if locked The tda1004x was updating the properties cache before locking. If the device is not locked, the data at the registers are just random values with no real meaning. This caused the driver to fail with libdvbv5, as such library calls GET_PROPERTY from time to time, in order to return the DVB stats. Tested with a saa7134 card 78: ASUSTeK P7131 Dual, vendor PCI ID: 1043:4862 Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/tda1004x.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers') diff --git a/drivers/media/dvb-frontends/tda1004x.c b/drivers/media/dvb-frontends/tda1004x.c index 0e209b56c76c..c6abeb4fba9d 100644 --- a/drivers/media/dvb-frontends/tda1004x.c +++ b/drivers/media/dvb-frontends/tda1004x.c @@ -903,9 +903,18 @@ static int tda1004x_get_fe(struct dvb_frontend *fe) { struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache; struct tda1004x_state* state = fe->demodulator_priv; + int status; dprintk("%s\n", __func__); + status = tda1004x_read_byte(state, TDA1004X_STATUS_CD); + if (status == -1) + return -EIO; + + /* Only update the properties cache if device is locked */ + if (!(status & 8)) + return 0; + // inversion status fe_params->inversion = INVERSION_OFF; if (tda1004x_read_byte(state, TDA1004X_CONFC1) & 0x20) -- cgit v1.2.3 From fac710e45d0b12443acd4d905c9acec27ab4ca14 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 27 Jan 2016 10:08:42 -0200 Subject: [media] vb2: fix nasty vb2_thread regression The vb2_thread implementation was made generic and was moved from videobuf2-v4l2.c to videobuf2-core.c in commit af3bac1a. Unfortunately that clearly was never tested since it broke read() causing NULL address references. The root cause was confused handling of vb2_buffer vs v4l2_buffer (the pb pointer in various core functions). The v4l2_buffer no longer exists after moving the code into the core and it is no longer needed. However, the vb2_thread code passed a pointer to a vb2_buffer to the core functions were a v4l2_buffer pointer was expected and vb2_thread expected that the vb2_buffer fields would be filled in correctly. This is obviously wrong since v4l2_buffer != vb2_buffer. Note that the pb pointer is a void pointer, so no type-checking took place. This patch fixes this problem: 1) allow pb to be NULL for vb2_core_(d)qbuf. The vb2_thread code will use a NULL pointer here since they don't care about v4l2_buffer anyway. 2) let vb2_core_dqbuf pass back the index of the received buffer. This is all vb2_thread needs: this index is the index into the q->bufs array and vb2_thread just gets the vb2_buffer from there. 3) the fileio->b pointer (that originally contained a v4l2_buffer) is removed altogether since it is no longer needed. Tested with vivid and the cobalt driver. Cc: stable@vger.kernel.org # Kernel >= 4.3 Signed-off-by: Hans Verkuil Reported-by: Matthias Schwarzott Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 95 +++++++++++++++----------------- drivers/media/v4l2-core/videobuf2-v4l2.c | 2 +- 2 files changed, 44 insertions(+), 53 deletions(-) (limited to 'drivers') diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index c5d49d7a0d76..b53e42c329cb 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1063,8 +1063,11 @@ EXPORT_SYMBOL_GPL(vb2_discard_done); */ static int __qbuf_mmap(struct vb2_buffer *vb, const void *pb) { - int ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, - vb, pb, vb->planes); + int ret = 0; + + if (pb) + ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, + vb, pb, vb->planes); return ret ? ret : call_vb_qop(vb, buf_prepare, vb); } @@ -1077,14 +1080,16 @@ static int __qbuf_userptr(struct vb2_buffer *vb, const void *pb) struct vb2_queue *q = vb->vb2_queue; void *mem_priv; unsigned int plane; - int ret; + int ret = 0; enum dma_data_direction dma_dir = q->is_output ? DMA_TO_DEVICE : DMA_FROM_DEVICE; bool reacquired = vb->planes[0].mem_priv == NULL; memset(planes, 0, sizeof(planes[0]) * vb->num_planes); /* Copy relevant information provided by the userspace */ - ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, vb, pb, planes); + if (pb) + ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, + vb, pb, planes); if (ret) return ret; @@ -1192,14 +1197,16 @@ static int __qbuf_dmabuf(struct vb2_buffer *vb, const void *pb) struct vb2_queue *q = vb->vb2_queue; void *mem_priv; unsigned int plane; - int ret; + int ret = 0; enum dma_data_direction dma_dir = q->is_output ? DMA_TO_DEVICE : DMA_FROM_DEVICE; bool reacquired = vb->planes[0].mem_priv == NULL; memset(planes, 0, sizeof(planes[0]) * vb->num_planes); /* Copy relevant information provided by the userspace */ - ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, vb, pb, planes); + if (pb) + ret = call_bufop(vb->vb2_queue, fill_vb2_buffer, + vb, pb, planes); if (ret) return ret; @@ -1520,7 +1527,8 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) q->waiting_for_buffers = false; vb->state = VB2_BUF_STATE_QUEUED; - call_void_bufop(q, copy_timestamp, vb, pb); + if (pb) + call_void_bufop(q, copy_timestamp, vb, pb); trace_vb2_qbuf(q, vb); @@ -1532,7 +1540,8 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) __enqueue_in_driver(vb); /* Fill buffer information for the userspace */ - call_void_bufop(q, fill_user_buffer, vb, pb); + if (pb) + call_void_bufop(q, fill_user_buffer, vb, pb); /* * If streamon has been called, and we haven't yet called @@ -1731,7 +1740,8 @@ static void __vb2_dqbuf(struct vb2_buffer *vb) * The return values from this function are intended to be directly returned * from vidioc_dqbuf handler in driver. */ -int vb2_core_dqbuf(struct vb2_queue *q, void *pb, bool nonblocking) +int vb2_core_dqbuf(struct vb2_queue *q, unsigned int *pindex, void *pb, + bool nonblocking) { struct vb2_buffer *vb = NULL; int ret; @@ -1754,8 +1764,12 @@ int vb2_core_dqbuf(struct vb2_queue *q, void *pb, bool nonblocking) call_void_vb_qop(vb, buf_finish, vb); + if (pindex) + *pindex = vb->index; + /* Fill buffer information for the userspace */ - call_void_bufop(q, fill_user_buffer, vb, pb); + if (pb) + call_void_bufop(q, fill_user_buffer, vb, pb); /* Remove from videobuf queue */ list_del(&vb->queued_entry); @@ -1828,7 +1842,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q) * that's done in dqbuf, but that's not going to happen when we * cancel the whole queue. Note: this code belongs here, not in * __vb2_dqbuf() since in vb2_internal_dqbuf() there is a critical - * call to __fill_v4l2_buffer() after buf_finish(). That order can't + * call to __fill_user_buffer() after buf_finish(). That order can't * be changed, so we can't move the buf_finish() to __vb2_dqbuf(). */ for (i = 0; i < q->num_buffers; ++i) { @@ -2357,7 +2371,6 @@ struct vb2_fileio_data { unsigned int count; unsigned int type; unsigned int memory; - struct vb2_buffer *b; struct vb2_fileio_buf bufs[VB2_MAX_FRAME]; unsigned int cur_index; unsigned int initial_index; @@ -2410,12 +2423,6 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) if (fileio == NULL) return -ENOMEM; - fileio->b = kzalloc(q->buf_struct_size, GFP_KERNEL); - if (fileio->b == NULL) { - kfree(fileio); - return -ENOMEM; - } - fileio->read_once = q->fileio_read_once; fileio->write_immediately = q->fileio_write_immediately; @@ -2460,13 +2467,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) * Queue all buffers. */ for (i = 0; i < q->num_buffers; i++) { - struct vb2_buffer *b = fileio->b; - - memset(b, 0, q->buf_struct_size); - b->type = q->type; - b->memory = q->memory; - b->index = i; - ret = vb2_core_qbuf(q, i, b); + ret = vb2_core_qbuf(q, i, NULL); if (ret) goto err_reqbufs; fileio->bufs[i].queued = 1; @@ -2511,7 +2512,6 @@ static int __vb2_cleanup_fileio(struct vb2_queue *q) q->fileio = NULL; fileio->count = 0; vb2_core_reqbufs(q, fileio->memory, &fileio->count); - kfree(fileio->b); kfree(fileio); dprintk(3, "file io emulator closed\n"); } @@ -2539,7 +2539,8 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ * else is able to provide this information with the write() operation. */ bool copy_timestamp = !read && q->copy_timestamp; - int ret, index; + unsigned index; + int ret; dprintk(3, "mode %s, offset %ld, count %zd, %sblocking\n", read ? "read" : "write", (long)*ppos, count, @@ -2564,22 +2565,20 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ */ index = fileio->cur_index; if (index >= q->num_buffers) { - struct vb2_buffer *b = fileio->b; + struct vb2_buffer *b; /* * Call vb2_dqbuf to get buffer back. */ - memset(b, 0, q->buf_struct_size); - b->type = q->type; - b->memory = q->memory; - ret = vb2_core_dqbuf(q, b, nonblock); + ret = vb2_core_dqbuf(q, &index, NULL, nonblock); dprintk(5, "vb2_dqbuf result: %d\n", ret); if (ret) return ret; fileio->dq_count += 1; - fileio->cur_index = index = b->index; + fileio->cur_index = index; buf = &fileio->bufs[index]; + b = q->bufs[index]; /* * Get number of bytes filled by the driver @@ -2630,7 +2629,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ * Queue next buffer if required. */ if (buf->pos == buf->size || (!read && fileio->write_immediately)) { - struct vb2_buffer *b = fileio->b; + struct vb2_buffer *b = q->bufs[index]; /* * Check if this is the last buffer to read. @@ -2643,15 +2642,11 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ /* * Call vb2_qbuf and give buffer to the driver. */ - memset(b, 0, q->buf_struct_size); - b->type = q->type; - b->memory = q->memory; - b->index = index; b->planes[0].bytesused = buf->pos; if (copy_timestamp) b->timestamp = ktime_get_ns(); - ret = vb2_core_qbuf(q, index, b); + ret = vb2_core_qbuf(q, index, NULL); dprintk(5, "vb2_dbuf result: %d\n", ret); if (ret) return ret; @@ -2713,10 +2708,9 @@ static int vb2_thread(void *data) { struct vb2_queue *q = data; struct vb2_threadio_data *threadio = q->threadio; - struct vb2_fileio_data *fileio = q->fileio; bool copy_timestamp = false; - int prequeue = 0; - int index = 0; + unsigned prequeue = 0; + unsigned index = 0; int ret = 0; if (q->is_output) { @@ -2728,37 +2722,34 @@ static int vb2_thread(void *data) for (;;) { struct vb2_buffer *vb; - struct vb2_buffer *b = fileio->b; /* * Call vb2_dqbuf to get buffer back. */ - memset(b, 0, q->buf_struct_size); - b->type = q->type; - b->memory = q->memory; if (prequeue) { - b->index = index++; + vb = q->bufs[index++]; prequeue--; } else { call_void_qop(q, wait_finish, q); if (!threadio->stop) - ret = vb2_core_dqbuf(q, b, 0); + ret = vb2_core_dqbuf(q, &index, NULL, 0); call_void_qop(q, wait_prepare, q); dprintk(5, "file io: vb2_dqbuf result: %d\n", ret); + if (!ret) + vb = q->bufs[index]; } if (ret || threadio->stop) break; try_to_freeze(); - vb = q->bufs[b->index]; - if (b->state == VB2_BUF_STATE_DONE) + if (vb->state == VB2_BUF_STATE_DONE) if (threadio->fnc(vb, threadio->priv)) break; call_void_qop(q, wait_finish, q); if (copy_timestamp) - b->timestamp = ktime_get_ns();; + vb->timestamp = ktime_get_ns();; if (!threadio->stop) - ret = vb2_core_qbuf(q, b->index, b); + ret = vb2_core_qbuf(q, vb->index, NULL); call_void_qop(q, wait_prepare, q); if (ret || threadio->stop) break; diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c index c9a28605511a..91f552124050 100644 --- a/drivers/media/v4l2-core/videobuf2-v4l2.c +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c @@ -625,7 +625,7 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, return -EINVAL; } - ret = vb2_core_dqbuf(q, b, nonblocking); + ret = vb2_core_dqbuf(q, NULL, b, nonblocking); return ret; } -- cgit v1.2.3 From 1f2c450185b7b8d50d38d37ee30387ff4cd337f8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 3 Feb 2016 19:30:31 -0200 Subject: [media] vb2-core: call threadio->fnc() if !VB2_BUF_STATE_ERROR changeset 70433a152f0 ("media: videobuf2: Refactor vb2_fileio_data and vb2_thread") broke videobuf2-dvb. The root cause is that, instead of calling threadio->fnc() for all types of events except for VB2_BUF_STATE_ERROR, it was calling it only for VB2_BUF_STATE_DONE. With that, the DVB thread were never called. Cc: stable@vger.kernel.org # Kernel >= 4.3 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index b53e42c329cb..ff8953ae52d1 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -2742,7 +2742,7 @@ static int vb2_thread(void *data) break; try_to_freeze(); - if (vb->state == VB2_BUF_STATE_DONE) + if (vb->state != VB2_BUF_STATE_ERROR) if (threadio->fnc(vb, threadio->priv)) break; call_void_qop(q, wait_finish, q); -- cgit v1.2.3 From bb6a777369449d15a4a890306d2f925cae720e1c Mon Sep 17 00:00:00 2001 From: Carol L Soto Date: Wed, 3 Feb 2016 15:55:37 -0500 Subject: IB/IPoIB: Do not set skb truesize since using one linearskb We are seeing this warning: at net/core/skbuff.c:4174 and before commit a44878d10063 ("IB/ipoib: Use one linear skb in RX flow") skb truesize was not being set when ipoib was using just one skb. Removing this line avoids the warning when running tcp tests like iperf. Fixes: a44878d10063 ("IB/ipoib: Use one linear skb in RX flow") Signed-off-by: Carol L Soto Signed-off-by: Doug Ledford --- drivers/infiniband/ulp/ipoib/ipoib_ib.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index 5ea0c14070d1..fa9c42ff1fb0 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -245,8 +245,6 @@ static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) skb_reset_mac_header(skb); skb_pull(skb, IPOIB_ENCAP_LEN); - skb->truesize = SKB_TRUESIZE(skb->len); - ++dev->stats.rx_packets; dev->stats.rx_bytes += skb->len; -- cgit v1.2.3 From 9f780dab7fb5618ee8bacbf6f91832374231c30c Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 25 Jan 2016 18:38:06 +0000 Subject: IB/sysfs: remove unused va_list args _show_port_gid_attr performs a va_end on some unused va_list args. Clean this up by removing the args completely. Fixes: 470be516a226e8 ("IB/core: Add gid attributes to sysfs") Signed-off-by: Colin Ian King Reviewed-by: Ira Weiny Reviewed-by: Jason Gunthorpe Signed-off-by: Doug Ledford --- drivers/infiniband/core/sysfs.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 3de93517efe4..ec46386e3c7f 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -336,7 +336,6 @@ static ssize_t _show_port_gid_attr(struct ib_port *p, union ib_gid gid; struct ib_gid_attr gid_attr = {}; ssize_t ret; - va_list args; ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, &gid_attr); @@ -348,7 +347,6 @@ static ssize_t _show_port_gid_attr(struct ib_port *p, err: if (gid_attr.ndev) dev_put(gid_attr.ndev); - va_end(args); return ret; } -- cgit v1.2.3 From 1a485f4d2e28efd77075b2952926683d6c245633 Mon Sep 17 00:00:00 2001 From: Shanker Donthineni Date: Mon, 1 Feb 2016 20:19:44 -0600 Subject: irqchip/gicv3-its: Fix memory leak in its_free_tables() The current ITS driver has a memory leak in its_free_tables(). It happens on tear down path of the driver when its_probe() call fails. its_free_tables() should free the exact number of pages that have been allocated, not just a single page as current code does. This patch records the memory size for each ITS_BASERn at the time of page allocation and uses the same size information when freeing pages to fix the issue. Signed-off-by: Shanker Donthineni Acked-by: Marc Zyngier Cc: Jason Cooper Cc: Vikram Sethi Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1454379584-21772-1-git-send-email-shankerd@codeaurora.org Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-gic-v3-its.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 3447549fcc93..0a73632b28d5 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -66,7 +66,10 @@ struct its_node { unsigned long phys_base; struct its_cmd_block *cmd_base; struct its_cmd_block *cmd_write; - void *tables[GITS_BASER_NR_REGS]; + struct { + void *base; + u32 order; + } tables[GITS_BASER_NR_REGS]; struct its_collection *collections; struct list_head its_device_list; u64 flags; @@ -807,9 +810,10 @@ static void its_free_tables(struct its_node *its) int i; for (i = 0; i < GITS_BASER_NR_REGS; i++) { - if (its->tables[i]) { - free_page((unsigned long)its->tables[i]); - its->tables[i] = NULL; + if (its->tables[i].base) { + free_pages((unsigned long)its->tables[i].base, + its->tables[i].order); + its->tables[i].base = NULL; } } } @@ -890,7 +894,8 @@ retry_alloc_baser: goto out_free; } - its->tables[i] = base; + its->tables[i].base = base; + its->tables[i].order = order; retry_baser: val = (virt_to_phys(base) | @@ -940,7 +945,7 @@ retry_baser: * something is horribly wrong... */ free_pages((unsigned long)base, order); - its->tables[i] = NULL; + its->tables[i].base = NULL; switch (psz) { case SZ_16K: -- cgit v1.2.3 From ac75fe5d8fe4a0bf063be18fb29684405279e79e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 4 Feb 2016 15:59:43 -0200 Subject: [media] saa7134-alsa: Only frees registered sound cards That prevents this bug: [ 2382.269496] BUG: unable to handle kernel NULL pointer dereference at 0000000000000540 [ 2382.270013] IP: [] snd_card_free+0x36/0x70 [snd] [ 2382.270013] PGD 0 [ 2382.270013] Oops: 0002 [#1] SMP [ 2382.270013] Modules linked in: saa7134_alsa(-) tda1004x saa7134_dvb videobuf2_dvb dvb_core tda827x tda8290 tuner saa7134 tveeprom videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc tun bridge stp llc ebtables ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack it87 hwmon_vid snd_hda_codec_idt snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_seq pcspkr i2c_i801 snd_seq_device snd_pcm snd_timer lpc_ich snd mfd_core soundcore binfmt_misc i915 video i2c_algo_bit drm_kms_helper drm r8169 ata_generic serio_raw pata_acpi mii i2c_core [last unloaded: videobuf2_memops] [ 2382.270013] CPU: 0 PID: 4899 Comm: rmmod Not tainted 4.5.0-rc1+ #4 [ 2382.270013] Hardware name: PCCHIPS P17G/P17G, BIOS 080012 05/14/2008 [ 2382.270013] task: ffff880039c38000 ti: ffff88003c764000 task.ti: ffff88003c764000 [ 2382.270013] RIP: 0010:[] [] snd_card_free+0x36/0x70 [snd] [ 2382.270013] RSP: 0018:ffff88003c767ea0 EFLAGS: 00010286 [ 2382.270013] RAX: ffff88003c767eb8 RBX: 0000000000000000 RCX: 0000000000006260 [ 2382.270013] RDX: ffffffffa020a060 RSI: ffffffffa0206de1 RDI: ffff88003c767eb0 [ 2382.270013] RBP: ffff88003c767ed8 R08: 0000000000019960 R09: ffffffff811a5412 [ 2382.270013] R10: ffffea0000d7c200 R11: 0000000000000000 R12: ffff88003c767ea8 [ 2382.270013] R13: 00007ffe760617f7 R14: 0000000000000000 R15: 0000557625d7f1e0 [ 2382.270013] FS: 00007f80bb1c0700(0000) GS:ffff88003f400000(0000) knlGS:0000000000000000 [ 2382.270013] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2382.270013] CR2: 0000000000000540 CR3: 000000003c00f000 CR4: 00000000000006f0 [ 2382.270013] Stack: [ 2382.270013] 000000003c767ed8 ffffffff00000000 ffff880000000000 ffff88003c767eb8 [ 2382.270013] ffff88003c767eb8 ffffffffa049a890 00007ffe76060060 ffff88003c767ef0 [ 2382.270013] ffffffffa049889d ffffffffa049a500 ffff88003c767f48 ffffffff8111079c [ 2382.270013] Call Trace: [ 2382.270013] [] saa7134_alsa_exit+0x1d/0x780 [saa7134_alsa] [ 2382.270013] [] SyS_delete_module+0x19c/0x1f0 [ 2382.270013] [] entry_SYSCALL_64_fastpath+0x12/0x71 [ 2382.270013] Code: 20 a0 48 c7 c6 e1 6d 20 a0 48 89 e5 41 54 53 4c 8d 65 d0 48 89 fb 48 83 ec 28 c7 45 d0 00 00 00 00 49 8d 7c 24 08 e8 7a 55 ed e0 <4c> 89 a3 40 05 00 00 48 89 df e8 eb fd ff ff 85 c0 75 1a 48 8d [ 2382.270013] RIP [] snd_card_free+0x36/0x70 [snd] [ 2382.270013] RSP [ 2382.270013] CR2: 0000000000000540 Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/saa7134/saa7134-alsa.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/pci/saa7134/saa7134-alsa.c b/drivers/media/pci/saa7134/saa7134-alsa.c index 1d2c310ce838..94f816244407 100644 --- a/drivers/media/pci/saa7134/saa7134-alsa.c +++ b/drivers/media/pci/saa7134/saa7134-alsa.c @@ -1211,6 +1211,8 @@ static int alsa_device_init(struct saa7134_dev *dev) static int alsa_device_exit(struct saa7134_dev *dev) { + if (!snd_saa7134_cards[dev->nr]) + return 1; snd_card_free(snd_saa7134_cards[dev->nr]); snd_saa7134_cards[dev->nr] = NULL; @@ -1260,7 +1262,8 @@ static void saa7134_alsa_exit(void) int idx; for (idx = 0; idx < SNDRV_CARDS; idx++) { - snd_card_free(snd_saa7134_cards[idx]); + if (snd_saa7134_cards[idx]) + snd_card_free(snd_saa7134_cards[idx]); } saa7134_dmasound_init = NULL; -- cgit v1.2.3 From 89140fdaf11aec81e93d5590a993720f2ef0d26e Mon Sep 17 00:00:00 2001 From: Joe Lawrence Date: Wed, 3 Feb 2016 12:51:12 -0500 Subject: xhci: harden xhci_find_next_ext_cap against device removal xhci_find_next_ext_cap doesn't check for PCI hotplug removal and may use the PCI master abort bit pattern (~0) to calculate a new PCI address offset to read/write. The has lead to reproducable crashes when testing surprise removal during device initialization on a Stratus platform, at least after commit d5ddcdf4d672 ("xhci: rework xhci extended capability list parsing functions"). The crash is repeatable on a Stratus platform when injecting hardware faults to induce xHCI host controller hotplug during driver initialization. If a PCI read in xhci_find_next_ext_cap returns the master abort pattern, quirk_usb_handoff_xhci may start using a bogus ext_cap_offset to start searching more bogus PCI addresses. Signed-off-by: Joe Lawrence Acked-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ext-caps.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index 04ce6b156b35..e0244fb3903d 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -112,12 +112,16 @@ static inline int xhci_find_next_ext_cap(void __iomem *base, u32 start, int id) offset = start; if (!start || start == XHCI_HCC_PARAMS_OFFSET) { val = readl(base + XHCI_HCC_PARAMS_OFFSET); + if (val == ~0) + return 0; offset = XHCI_HCC_EXT_CAPS(val) << 2; if (!offset) return 0; }; do { val = readl(base + offset); + if (val == ~0) + return 0; if (XHCI_EXT_CAPS_ID(val) == id && offset != start) return offset; -- cgit v1.2.3 From d2d06d4fe0f2cc2df9b17fefec96e6e1a1271d91 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Fri, 22 Jan 2016 15:42:41 +0100 Subject: scsi_dh_rdac: always retry MODE SELECT on command lock violation If MODE SELECT returns with sense '05/91/36' (command lock violation) it should always be retried without counting the number of retries. During an HBA upgrade or similar circumstances one might see a flood of MODE SELECT command from various HBAs, which will easily trigger the sense code and exceed the retry count. Cc: Signed-off-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- drivers/scsi/device_handler/scsi_dh_rdac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c index 361358134315..93880ed6291c 100644 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c @@ -562,7 +562,7 @@ static int mode_select_handle_sense(struct scsi_device *sdev, /* * Command Lock contention */ - err = SCSI_DH_RETRY; + err = SCSI_DH_IMM_RETRY; break; default: break; @@ -612,6 +612,8 @@ retry: err = mode_select_handle_sense(sdev, h->sense); if (err == SCSI_DH_RETRY && retry_cnt--) goto retry; + if (err == SCSI_DH_IMM_RETRY) + goto retry; } if (err == SCSI_DH_OK) { h->state = RDAC_STATE_ACTIVE; -- cgit v1.2.3 From 82c43310508eb19eb41fe7862e89afeb74030b84 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 27 Jan 2016 16:19:13 +0200 Subject: SCSI: Add Marvell Console to VPD blacklist I have a Marvell 88SE9230 SATA Controller that has some sort of integrated console SCSI device attached to one of the ports. ata14: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata14.00: ATAPI: MARVELL VIRTUALL, 1.09, max UDMA/66 ata14.00: configured for UDMA/66 scsi 13:0:0:0: Processor Marvell Console 1.01 PQ: 0 ANSI: 5 Sending it VPD INQUIRY command seem to always fail with following error: ata14.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 ata14.00: irq_stat 0x40000001 ata14.00: cmd a0/01:00:00:00:01/00:00:00:00:00/a0 tag 2 dma 16640 in Inquiry 12 01 00 00 ff 00res 00/00:00:00:00:00/00:00:00:00:00/00 Emask 0x3 (HSM violation) ata14: hard resetting link This has been minor annoyance (only error printed on dmesg) until commit 09e2b0b14690 ("scsi: rescan VPD attributes") added call to scsi_attach_vpd() in scsi_rescan_device(). The commit causes the system to splat out following errors continuously without ever reaching the UI: ata14.00: configured for UDMA/66 ata14: EH complete ata14.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 ata14.00: irq_stat 0x40000001 ata14.00: cmd a0/01:00:00:00:01/00:00:00:00:00/a0 tag 6 dma 16640 in Inquiry 12 01 00 00 ff 00res 00/00:00:00:00:00/00:00:00:00:00/00 Emask 0x3 (HSM violation) ata14: hard resetting link ata14: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata14.00: configured for UDMA/66 ata14: EH complete ata14.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 ata14.00: irq_stat 0x40000001 ata14.00: cmd a0/01:00:00:00:01/00:00:00:00:00/a0 tag 7 dma 16640 in Inquiry 12 01 00 00 ff 00res 00/00:00:00:00:00/00:00:00:00:00/00 Emask 0x3 (HSM violation) Without in-depth understanding of SCSI layer and the Marvell controller, I suspect this happens because when the link goes down (because of an error) we schedule scsi_rescan_device() which again fails to read VPD data... ad infinitum. Since VPD data cannot be read from the device anyway we prevent the SCSI layer from even trying by blacklisting the device. This gets away the error and the system starts up normally. [mkp: Widened the match to all revisions of this device] Cc: Signed-off-by: Mika Westerberg Reported-by: Kirill A. Shutemov Reported-by: Alexander Duyck Signed-off-by: Martin K. Petersen --- drivers/scsi/scsi_devinfo.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index 2c1160c7ec92..820416665324 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -205,6 +205,7 @@ static struct { {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, + {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, -- cgit v1.2.3 From 0fb5b1fb30fba3671dd5b1489d78e93e08d62e4e Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Thu, 4 Feb 2016 00:52:12 -0500 Subject: block/sd: Return -EREMOTEIO when WRITE SAME and DISCARD are disabled When a storage device rejects a WRITE SAME command we will disable write same functionality for the device and return -EREMOTEIO to the block layer. -EREMOTEIO will in turn prevent DM from retrying the I/O and/or failing the path. Yiwen Jiang discovered a small race where WRITE SAME requests issued simultaneously would cause -EIO to be returned. This happened because any requests being prepared after WRITE SAME had been disabled for the device caused us to return BLKPREP_KILL. The latter caused the block layer to return -EIO upon completion. To overcome this we introduce BLKPREP_INVALID which indicates that this is an invalid request for the device. blk_peek_request() is modified to return -EREMOTEIO in that case. Reported-by: Yiwen Jiang Suggested-by: Mike Snitzer Reviewed-by: Hannes Reinicke Reviewed-by: Ewan Milne Reviewed-by: Yiwen Jiang Signed-off-by: Martin K. Petersen --- drivers/scsi/sd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index ec163d08f6c3..6e841c6da632 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -761,7 +761,7 @@ static int sd_setup_discard_cmnd(struct scsi_cmnd *cmd) break; default: - ret = BLKPREP_KILL; + ret = BLKPREP_INVALID; goto out; } @@ -839,7 +839,7 @@ static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd) int ret; if (sdkp->device->no_write_same) - return BLKPREP_KILL; + return BLKPREP_INVALID; BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size); -- cgit v1.2.3 From dabe19540af9e563d526113bb102e1b9b9fa73f9 Mon Sep 17 00:00:00 2001 From: Insu Yun Date: Mon, 1 Feb 2016 11:08:29 -0500 Subject: drm: fix missing reference counting decrease In drm_dp_mst_allocate_vcpi, it returns true in two paths, but in one path, there is no reference couting decrease. Signed-off-by: Insu Yun Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 6ed90a2437e5..fe273b681fe5 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2446,6 +2446,7 @@ bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp DRM_DEBUG_KMS("payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", port->vcpi.vcpi, port->vcpi.pbn, pbn); if (pbn == port->vcpi.pbn) { *slots = port->vcpi.num_slots; + drm_dp_put_port(port); return true; } } -- cgit v1.2.3 From 441388a8a73f905359e60518cfc18eca6aed2b6a Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Fri, 29 Jan 2016 14:44:28 +0200 Subject: drm/mst: Don't ignore the MST PBN self-test result Otherwise this call would have no effect. Caught by Coverity. Signed-off-by: Imre Deak Reviewed-by: David Weinehall Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index fe273b681fe5..2b7c2f068834 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2855,7 +2855,9 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, if (!mgr->proposed_vcpis) return -ENOMEM; set_bit(0, &mgr->payload_mask); - test_calc_pbn_mode(); + if (test_calc_pbn_mode() < 0) + DRM_ERROR("MST PBN self-test failed\n"); + return 0; } EXPORT_SYMBOL(drm_dp_mst_topology_mgr_init); -- cgit v1.2.3 From 4d6a10da79fddcf7460299ab390da74ef2b592f6 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Fri, 29 Jan 2016 14:44:29 +0200 Subject: drm/mst: Add range check for max_payloads during init max_payload is limited by the space we have in drm_dp_mst_topology_mgr::vcpi_mask,payload_mask. We need to track max_payloads+1 IDs in these masks, see drm_dp_mst_assign_payload_id(). Add a sanity check for this. Caught by coverity. Signed-off-by: Imre Deak Reviewed-by: David Weinehall Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 2b7c2f068834..0680e7aecac4 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2848,6 +2848,9 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, mgr->max_dpcd_transaction_bytes = max_dpcd_transaction_bytes; mgr->max_payloads = max_payloads; mgr->conn_base_id = conn_base_id; + if (max_payloads + 1 > sizeof(mgr->payload_mask) * 8 || + max_payloads + 1 > sizeof(mgr->vcpi_mask) * 8) + return -EINVAL; mgr->payloads = kcalloc(max_payloads, sizeof(struct drm_dp_payload), GFP_KERNEL); if (!mgr->payloads) return -ENOMEM; -- cgit v1.2.3 From a9ebb3e46c7ef6112c0da466ef0954673ad36832 Mon Sep 17 00:00:00 2001 From: Harry Wentland Date: Fri, 22 Jan 2016 17:07:26 -0500 Subject: drm/dp/mst: Calculate MST PBN with 31.32 fixed point Our PBN value overflows the 20 bits integer part of the 20.12 fixed point. We need to use 31.32 fixed point to avoid this. This happens with display clocks larger than 293122 (at 24 bpp), which we see with the Sharp (and similar) 4k tiled displays. Signed-off-by: Harry Wentland Cc: stable@vger.kernel.org Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 67 ++++++++++++++++++++--------------- 1 file changed, 39 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 0680e7aecac4..84047b802c18 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2606,32 +2606,31 @@ EXPORT_SYMBOL(drm_dp_check_act_status); */ int drm_dp_calc_pbn_mode(int clock, int bpp) { - fixed20_12 pix_bw; - fixed20_12 fbpp; - fixed20_12 result; - fixed20_12 margin, tmp; - u32 res; - - pix_bw.full = dfixed_const(clock); - fbpp.full = dfixed_const(bpp); - tmp.full = dfixed_const(8); - fbpp.full = dfixed_div(fbpp, tmp); - - result.full = dfixed_mul(pix_bw, fbpp); - margin.full = dfixed_const(54); - tmp.full = dfixed_const(64); - margin.full = dfixed_div(margin, tmp); - result.full = dfixed_div(result, margin); - - margin.full = dfixed_const(1006); - tmp.full = dfixed_const(1000); - margin.full = dfixed_div(margin, tmp); - result.full = dfixed_mul(result, margin); - - result.full = dfixed_div(result, tmp); - result.full = dfixed_ceil(result); - res = dfixed_trunc(result); - return res; + u64 kbps; + s64 peak_kbps; + u32 numerator; + u32 denominator; + + kbps = clock * bpp; + + /* + * margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006 + * The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on + * common multiplier to render an integer PBN for all link rate/lane + * counts combinations + * calculate + * peak_kbps *= (1006/1000) + * peak_kbps *= (64/54) + * peak_kbps *= 8 convert to bytes + */ + + numerator = 64 * 1006; + denominator = 54 * 8 * 1000 * 1000; + + kbps *= numerator; + peak_kbps = drm_fixp_from_fraction(kbps, denominator); + + return drm_fixp2int_ceil(peak_kbps); } EXPORT_SYMBOL(drm_dp_calc_pbn_mode); @@ -2639,11 +2638,23 @@ static int test_calc_pbn_mode(void) { int ret; ret = drm_dp_calc_pbn_mode(154000, 30); - if (ret != 689) + if (ret != 689) { + DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", + 154000, 30, 689, ret); return -EINVAL; + } ret = drm_dp_calc_pbn_mode(234000, 30); - if (ret != 1047) + if (ret != 1047) { + DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", + 234000, 30, 1047, ret); return -EINVAL; + } + ret = drm_dp_calc_pbn_mode(297000, 24); + if (ret != 1063) { + DRM_ERROR("PBN calculation test failed - clock %d, bpp %d, expected PBN %d, actual PBN %d.\n", + 297000, 24, 1063, ret); + return -EINVAL; + } return 0; } -- cgit v1.2.3 From cfcfa086d43ced33e1099b9befb12f17fca102e1 Mon Sep 17 00:00:00 2001 From: Mykola Lysenko Date: Fri, 22 Jan 2016 17:07:27 -0500 Subject: drm/dp/mst: change MST detection scheme MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 1. Get edid for all connected MST displays, not only on logical ports, in the same thread as MST topology detection is done: There are displays that have branches inside w/o logical ports. So in case another SST display connected downstream system can end-up in situation when 3 DOWN requests sent: two for ‘remote i2c read’ and one for ‘enum path resources’, making slots full. 2. Call notification callback in one place in the end of topology discovery/update: This is done to reduce number of events sent to userspace in case complex topology discovery is going, adding multiple number of connectors; 3. Remove notification callback call from short pulse interrupt processing function: This is done in order not to block interrupt processing function, in case any MST request will be made from it. Notification will be send from topology discovery/update work item. Signed-off-by: Mykola Lysenko Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Acked-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 37 ++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 84047b802c18..630e6eb55fa3 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1130,13 +1130,11 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, drm_dp_put_port(port); goto out; } - if (port->port_num >= DP_MST_LOGICAL_PORT_0) { - port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc); - drm_mode_connector_set_tile_property(port->connector); - } + + drm_mode_connector_set_tile_property(port->connector); + (*mstb->mgr->cbs->register_connector)(port->connector); } - out: /* put reference to this port */ drm_dp_put_port(port); @@ -1161,9 +1159,9 @@ static void drm_dp_update_port(struct drm_dp_mst_branch *mstb, port->ddps = conn_stat->displayport_device_plug_status; if (old_ddps != port->ddps) { + dowork = true; if (port->ddps) { drm_dp_check_port_guid(mstb, port); - dowork = true; } else { port->guid_valid = false; port->available_pbn = 0; @@ -1271,8 +1269,13 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m if (port->input) continue; - if (!port->ddps) + if (!port->ddps) { + if (port->cached_edid) { + kfree(port->cached_edid); + port->cached_edid = NULL; + } continue; + } if (!port->available_pbn) drm_dp_send_enum_path_resources(mgr, mstb, port); @@ -1283,6 +1286,12 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m drm_dp_check_and_send_link_address(mgr, mstb_child); drm_dp_put_mst_branch_device(mstb_child); } + } else if (port->pdt == DP_PEER_DEVICE_SST_SINK || + port->pdt == DP_PEER_DEVICE_DP_LEGACY_CONV) { + if (!port->cached_edid) { + port->cached_edid = + drm_get_edid(port->connector, &port->aux.ddc); + } } } } @@ -1302,6 +1311,8 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work) drm_dp_check_and_send_link_address(mgr, mstb); drm_dp_put_mst_branch_device(mstb); } + + (*mgr->cbs->hotplug)(mgr); } static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr, @@ -1558,7 +1569,6 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) { drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]); } - (*mgr->cbs->hotplug)(mgr); } } else { mstb->link_address_sent = false; @@ -2232,8 +2242,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) drm_dp_update_port(mstb, &msg.u.conn_stat); DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type); - (*mgr->cbs->hotplug)(mgr); - } else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) { drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false); if (!mstb) @@ -2320,10 +2328,6 @@ enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector case DP_PEER_DEVICE_SST_SINK: status = connector_status_connected; - /* for logical ports - cache the EDID */ - if (port->port_num >= 8 && !port->cached_edid) { - port->cached_edid = drm_get_edid(connector, &port->aux.ddc); - } break; case DP_PEER_DEVICE_DP_LEGACY_CONV: if (port->ldps) @@ -2378,10 +2382,7 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_ if (port->cached_edid) edid = drm_edid_duplicate(port->cached_edid); - else { - edid = drm_get_edid(connector, &port->aux.ddc); - drm_mode_connector_set_tile_property(connector); - } + port->has_audio = drm_detect_monitor_audio(edid); drm_dp_put_port(port); return edid; -- cgit v1.2.3 From 5e93b8208d3c419b515fb75e2601931c027e12ab Mon Sep 17 00:00:00 2001 From: Hersen Wu Date: Fri, 22 Jan 2016 17:07:28 -0500 Subject: drm/dp/mst: move GUID storage from mgr, port to only mst branch Previous implementation does not handle case below: boot up one MST branch to DP connector of ASIC. After boot up, hot plug 2nd MST branch to DP output of 1st MST, GUID is not created for 2nd MST branch. When downstream port of 2nd MST branch send upstream request, it fails because 2nd MST branch GUID is not available. New Implementation: only create GUID for MST branch and save it within Branch. Signed-off-by: Hersen Wu Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Acked-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 64 +++++++++++++++-------------------- 1 file changed, 28 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 630e6eb55fa3..2c12a20ff08e 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1018,18 +1018,27 @@ static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port) return send_link; } -static void drm_dp_check_port_guid(struct drm_dp_mst_branch *mstb, - struct drm_dp_mst_port *port) +static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid) { int ret; - if (port->dpcd_rev >= 0x12) { - port->guid_valid = drm_dp_validate_guid(mstb->mgr, port->guid); - if (!port->guid_valid) { - ret = drm_dp_send_dpcd_write(mstb->mgr, - port, - DP_GUID, - 16, port->guid); - port->guid_valid = true; + + memcpy(mstb->guid, guid, 16); + + if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) { + if (mstb->port_parent) { + ret = drm_dp_send_dpcd_write( + mstb->mgr, + mstb->port_parent, + DP_GUID, + 16, + mstb->guid); + } else { + + ret = drm_dp_dpcd_write( + mstb->mgr->aux, + DP_GUID, + mstb->guid, + 16); } } } @@ -1086,7 +1095,6 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, port->dpcd_rev = port_msg->dpcd_revision; port->num_sdp_streams = port_msg->num_sdp_streams; port->num_sdp_stream_sinks = port_msg->num_sdp_stream_sinks; - memcpy(port->guid, port_msg->peer_guid, 16); /* manage mstb port lists with mgr lock - take a reference for this list */ @@ -1099,11 +1107,9 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb, if (old_ddps != port->ddps) { if (port->ddps) { - drm_dp_check_port_guid(mstb, port); if (!port->input) drm_dp_send_enum_path_resources(mstb->mgr, mstb, port); } else { - port->guid_valid = false; port->available_pbn = 0; } } @@ -1161,9 +1167,7 @@ static void drm_dp_update_port(struct drm_dp_mst_branch *mstb, if (old_ddps != port->ddps) { dowork = true; if (port->ddps) { - drm_dp_check_port_guid(mstb, port); } else { - port->guid_valid = false; port->available_pbn = 0; } } @@ -1220,13 +1224,14 @@ static struct drm_dp_mst_branch *get_mst_branch_device_by_guid_helper( struct drm_dp_mst_branch *found_mstb; struct drm_dp_mst_port *port; + if (memcmp(mstb->guid, guid, 16) == 0) + return mstb; + + list_for_each_entry(port, &mstb->ports, next) { if (!port->mstb) continue; - if (port->guid_valid && memcmp(port->guid, guid, 16) == 0) - return port->mstb; - found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid); if (found_mstb) @@ -1245,10 +1250,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device_by_guid( /* find the port by iterating down */ mutex_lock(&mgr->lock); - if (mgr->guid_valid && memcmp(mgr->guid, guid, 16) == 0) - mstb = mgr->mst_primary; - else - mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid); + mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid); if (mstb) kref_get(&mstb->kref); @@ -1566,6 +1568,9 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, txmsg->reply.u.link_addr.ports[i].num_sdp_streams, txmsg->reply.u.link_addr.ports[i].num_sdp_stream_sinks); } + + drm_dp_check_mstb_guid(mstb, txmsg->reply.u.link_addr.guid); + for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) { drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]); } @@ -2006,20 +2011,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms goto out_unlock; } - - /* sort out guid */ - ret = drm_dp_dpcd_read(mgr->aux, DP_GUID, mgr->guid, 16); - if (ret != 16) { - DRM_DEBUG_KMS("failed to read DP GUID %d\n", ret); - goto out_unlock; - } - - mgr->guid_valid = drm_dp_validate_guid(mgr, mgr->guid); - if (!mgr->guid_valid) { - ret = drm_dp_dpcd_write(mgr->aux, DP_GUID, mgr->guid, 16); - mgr->guid_valid = true; - } - queue_work(system_long_wq, &mgr->work); ret = 0; @@ -2241,6 +2232,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) } drm_dp_update_port(mstb, &msg.u.conn_stat); + DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type); } else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) { drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false); -- cgit v1.2.3 From c175cd16df272119534058f28cbd5eeac6ff2d24 Mon Sep 17 00:00:00 2001 From: Andrey Grodzovsky Date: Fri, 22 Jan 2016 17:07:29 -0500 Subject: drm/dp/mst: Reverse order of MST enable and clearing VC payload table. On DELL U3014 if you clear the table before enabling MST it sometimes hangs the receiver. Signed-off-by: Andrey Grodzovsky Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Acked-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 2c12a20ff08e..7e5d98c7b908 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1998,6 +1998,12 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms mgr->mst_primary = mstb; kref_get(&mgr->mst_primary->kref); + ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, + DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC); + if (ret < 0) { + goto out_unlock; + } + { struct drm_dp_payload reset_pay; reset_pay.start_slot = 0; @@ -2005,12 +2011,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms drm_dp_dpcd_write_payload(mgr, 0, &reset_pay); } - ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, - DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC); - if (ret < 0) { - goto out_unlock; - } - queue_work(system_long_wq, &mgr->work); ret = 0; -- cgit v1.2.3 From 91a25e463130c8e19bdb42f2d827836c7937992e Mon Sep 17 00:00:00 2001 From: Mykola Lysenko Date: Wed, 27 Jan 2016 09:39:36 -0500 Subject: drm/dp/mst: deallocate payload on port destruction This is needed to properly deallocate port payload after downstream branch get unplugged. In order to do this unplugged MST topology should be preserved, to find first alive port on path to unplugged MST topology, and send payload deallocation request to branch device of found port. For this mstb and port kref's are used in reversed order to track when port and branch memory could be freed. Added additional functions to find appropriate mstb as described above. Signed-off-by: Mykola Lysenko Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_dp_mst_topology.c | 91 ++++++++++++++++++++++++++++++++--- 1 file changed, 83 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 7e5d98c7b908..8ae13de272c4 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -803,12 +803,33 @@ static struct drm_dp_mst_branch *drm_dp_add_mst_branch_device(u8 lct, u8 *rad) return mstb; } +static void drm_dp_free_mst_port(struct kref *kref); + +static void drm_dp_free_mst_branch_device(struct kref *kref) +{ + struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref); + if (mstb->port_parent) { + if (list_empty(&mstb->port_parent->next)) + kref_put(&mstb->port_parent->kref, drm_dp_free_mst_port); + } + kfree(mstb); +} + static void drm_dp_destroy_mst_branch_device(struct kref *kref) { struct drm_dp_mst_branch *mstb = container_of(kref, struct drm_dp_mst_branch, kref); struct drm_dp_mst_port *port, *tmp; bool wake_tx = false; + /* + * init kref again to be used by ports to remove mst branch when it is + * not needed anymore + */ + kref_init(kref); + + if (mstb->port_parent && list_empty(&mstb->port_parent->next)) + kref_get(&mstb->port_parent->kref); + /* * destroy all ports - don't need lock * as there are no more references to the mst branch @@ -835,7 +856,8 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref) if (wake_tx) wake_up(&mstb->mgr->tx_waitq); - kfree(mstb); + + kref_put(kref, drm_dp_free_mst_branch_device); } static void drm_dp_put_mst_branch_device(struct drm_dp_mst_branch *mstb) @@ -883,6 +905,7 @@ static void drm_dp_destroy_port(struct kref *kref) * from an EDID retrieval */ mutex_lock(&mgr->destroy_connector_lock); + kref_get(&port->parent->kref); list_add(&port->next, &mgr->destroy_connector_list); mutex_unlock(&mgr->destroy_connector_lock); schedule_work(&mgr->destroy_connector_work); @@ -1617,6 +1640,37 @@ static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, return 0; } +static struct drm_dp_mst_port *drm_dp_get_last_connected_port_to_mstb(struct drm_dp_mst_branch *mstb) +{ + if (!mstb->port_parent) + return NULL; + + if (mstb->port_parent->mstb != mstb) + return mstb->port_parent; + + return drm_dp_get_last_connected_port_to_mstb(mstb->port_parent->parent); +} + +static struct drm_dp_mst_branch *drm_dp_get_last_connected_port_and_mstb(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_branch *mstb, + int *port_num) +{ + struct drm_dp_mst_branch *rmstb = NULL; + struct drm_dp_mst_port *found_port; + mutex_lock(&mgr->lock); + if (mgr->mst_primary) { + found_port = drm_dp_get_last_connected_port_to_mstb(mstb); + + if (found_port) { + rmstb = found_port->parent; + kref_get(&rmstb->kref); + *port_num = found_port->port_num; + } + } + mutex_unlock(&mgr->lock); + return rmstb; +} + static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int id, @@ -1624,13 +1678,18 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, { struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_mst_branch *mstb; - int len, ret; + int len, ret, port_num; u8 sinks[DRM_DP_MAX_SDP_STREAMS]; int i; + port_num = port->port_num; mstb = drm_dp_get_validated_mstb_ref(mgr, port->parent); - if (!mstb) - return -EINVAL; + if (!mstb) { + mstb = drm_dp_get_last_connected_port_and_mstb(mgr, port->parent, &port_num); + + if (!mstb) + return -EINVAL; + } txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); if (!txmsg) { @@ -1642,7 +1701,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, sinks[i] = i; txmsg->dst = mstb; - len = build_allocate_payload(txmsg, port->port_num, + len = build_allocate_payload(txmsg, port_num, id, pbn, port->num_sdp_streams, sinks); @@ -2788,6 +2847,13 @@ static void drm_dp_tx_work(struct work_struct *work) mutex_unlock(&mgr->qlock); } +static void drm_dp_free_mst_port(struct kref *kref) +{ + struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref); + kref_put(&port->parent->kref, drm_dp_free_mst_branch_device); + kfree(port); +} + static void drm_dp_destroy_connector_work(struct work_struct *work) { struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work); @@ -2808,13 +2874,22 @@ static void drm_dp_destroy_connector_work(struct work_struct *work) list_del(&port->next); mutex_unlock(&mgr->destroy_connector_lock); + kref_init(&port->kref); + INIT_LIST_HEAD(&port->next); + mgr->cbs->destroy_connector(mgr, port->connector); drm_dp_port_teardown_pdt(port, port->pdt); - if (!port->input && port->vcpi.vcpi > 0) - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - kfree(port); + if (!port->input && port->vcpi.vcpi > 0) { + if (mgr->mst_state) { + drm_dp_mst_reset_vcpi_slots(mgr, port); + drm_dp_update_payload_part1(mgr); + drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); + } + } + + kref_put(&port->kref, drm_dp_free_mst_port); send_hotplug = true; } if (send_hotplug) -- cgit v1.2.3 From 320549a22484952d88d4e0320218765b16cd2174 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 5 Feb 2016 11:22:04 +0000 Subject: regmap: mmio: Revert to v4.4 endianness handling Commit 29bb45f25ff3 (regmap-mmio: Use native endianness for read/write) attempted to fix some long standing bugs in the MMIO implementation for big endian systems caused by duplicate byte swapping in both regmap and readl()/writel() which affected MIPS systems as when they are in big endian mode they flip the endianness of all registers in the system, not just the CPU. MIPS systems had worked around this by declaring regmap using IPs as little endian which is inaccurate, unfortunately the issue had not been reported. Sadly the fix makes things worse rather than better. By changing the behaviour to match the documentation it caused behaviour changes for other IPs which broke them and by using the __raw I/O accessors to avoid the endianness swapping in readl()/writel() it removed some memory ordering guarantees and could potentially generate unvirtualisable instructions on some architectures. Unfortunately sorting out all this mess in any half way sensible fashion was far too invasive to go in during an -rc cycle so instead let's go back to the old broken behaviour for v4.5, the better fixes are already queued for v4.6. This does mean that we keep the broken MIPS DTs for another release but that seems the least bad way of handling the situation. Reported-by: Johannes Berg Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-mmio.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c index 8812bfb9e3b8..eea51569f0eb 100644 --- a/drivers/base/regmap/regmap-mmio.c +++ b/drivers/base/regmap/regmap-mmio.c @@ -133,17 +133,17 @@ static int regmap_mmio_gather_write(void *context, while (val_size) { switch (ctx->val_bytes) { case 1: - __raw_writeb(*(u8 *)val, ctx->regs + offset); + writeb(*(u8 *)val, ctx->regs + offset); break; case 2: - __raw_writew(*(u16 *)val, ctx->regs + offset); + writew(*(u16 *)val, ctx->regs + offset); break; case 4: - __raw_writel(*(u32 *)val, ctx->regs + offset); + writel(*(u32 *)val, ctx->regs + offset); break; #ifdef CONFIG_64BIT case 8: - __raw_writeq(*(u64 *)val, ctx->regs + offset); + writeq(*(u64 *)val, ctx->regs + offset); break; #endif default: @@ -193,17 +193,17 @@ static int regmap_mmio_read(void *context, while (val_size) { switch (ctx->val_bytes) { case 1: - *(u8 *)val = __raw_readb(ctx->regs + offset); + *(u8 *)val = readb(ctx->regs + offset); break; case 2: - *(u16 *)val = __raw_readw(ctx->regs + offset); + *(u16 *)val = readw(ctx->regs + offset); break; case 4: - *(u32 *)val = __raw_readl(ctx->regs + offset); + *(u32 *)val = readl(ctx->regs + offset); break; #ifdef CONFIG_64BIT case 8: - *(u64 *)val = __raw_readq(ctx->regs + offset); + *(u64 *)val = readq(ctx->regs + offset); break; #endif default: -- cgit v1.2.3 From fd98d89698855f6cf5650c014e5d3fca38783c8b Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Fri, 5 Feb 2016 20:06:37 +0530 Subject: RDMA/ocrdma: Initialize stats resources in the driver before ib device registration. In the latest kernel, process_mad hook of the driver can be invoked as soon as device is registered. In this hook, ocrdma driver is issuing a command to get the stats counters from the HW. This is triggering system crash since the statistics command resources are not allocated by the driver. Changing the sequence of initialization to avoid this crash. Signed-off-by: Selvin Xavier Signed-off-by: Doug Ledford --- drivers/infiniband/hw/ocrdma/ocrdma_main.c | 6 ++++++ drivers/infiniband/hw/ocrdma/ocrdma_stats.c | 14 ++++---------- drivers/infiniband/hw/ocrdma/ocrdma_stats.h | 2 ++ 3 files changed, 12 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c index 573849354cb9..f38743018cb4 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -228,6 +228,11 @@ static int ocrdma_alloc_resources(struct ocrdma_dev *dev) ocrdma_alloc_pd_pool(dev); + if (!ocrdma_alloc_stats_resources(dev)) { + pr_err("%s: stats resource allocation failed\n", __func__); + goto alloc_err; + } + spin_lock_init(&dev->av_tbl.lock); spin_lock_init(&dev->flush_q_lock); return 0; @@ -238,6 +243,7 @@ alloc_err: static void ocrdma_free_resources(struct ocrdma_dev *dev) { + ocrdma_release_stats_resources(dev); kfree(dev->stag_arr); kfree(dev->qp_tbl); kfree(dev->cq_tbl); diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c index 86c303a620c1..fc02e86849ce 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c @@ -64,10 +64,11 @@ static int ocrdma_add_stat(char *start, char *pcur, return cpy_len; } -static bool ocrdma_alloc_stats_mem(struct ocrdma_dev *dev) +bool ocrdma_alloc_stats_resources(struct ocrdma_dev *dev) { struct stats_mem *mem = &dev->stats_mem; + mutex_init(&dev->stats_lock); /* Alloc mbox command mem*/ mem->size = max_t(u32, sizeof(struct ocrdma_rdma_stats_req), sizeof(struct ocrdma_rdma_stats_resp)); @@ -91,13 +92,14 @@ static bool ocrdma_alloc_stats_mem(struct ocrdma_dev *dev) return true; } -static void ocrdma_release_stats_mem(struct ocrdma_dev *dev) +void ocrdma_release_stats_resources(struct ocrdma_dev *dev) { struct stats_mem *mem = &dev->stats_mem; if (mem->va) dma_free_coherent(&dev->nic_info.pdev->dev, mem->size, mem->va, mem->pa); + mem->va = NULL; kfree(mem->debugfs_mem); } @@ -838,15 +840,9 @@ void ocrdma_add_port_stats(struct ocrdma_dev *dev) &dev->reset_stats, &ocrdma_dbg_ops)) goto err; - /* Now create dma_mem for stats mbx command */ - if (!ocrdma_alloc_stats_mem(dev)) - goto err; - - mutex_init(&dev->stats_lock); return; err: - ocrdma_release_stats_mem(dev); debugfs_remove_recursive(dev->dir); dev->dir = NULL; } @@ -856,8 +852,6 @@ void ocrdma_rem_port_stats(struct ocrdma_dev *dev) if (!dev->dir) return; debugfs_remove(dev->dir); - mutex_destroy(&dev->stats_lock); - ocrdma_release_stats_mem(dev); } void ocrdma_init_debugfs(void) diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.h b/drivers/infiniband/hw/ocrdma/ocrdma_stats.h index c9e58d04c7b8..bba1fec4f11f 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.h @@ -65,6 +65,8 @@ enum OCRDMA_STATS_TYPE { void ocrdma_rem_debugfs(void); void ocrdma_init_debugfs(void); +bool ocrdma_alloc_stats_resources(struct ocrdma_dev *dev); +void ocrdma_release_stats_resources(struct ocrdma_dev *dev); void ocrdma_rem_port_stats(struct ocrdma_dev *dev); void ocrdma_add_port_stats(struct ocrdma_dev *dev); int ocrdma_pma_counters(struct ocrdma_dev *dev, -- cgit v1.2.3 From 7d82df1663e8a66961954258f3a99701f0126e73 Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Fri, 5 Feb 2016 20:06:38 +0530 Subject: RDMA/ocrdma: populate max_sge_rd in device attributes max_sge_rd is used by some of the ULPs to calculate the maximum number of SGEs that can be used for RDMA READ. Populating this value in the response of query_device verb. Also, avoid checking the max_srq_sge while populating max_sge. Signed-off-by: Selvin Xavier Signed-off-by: Doug Ledford --- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index d4c687b548d8..7cf1324ad081 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -125,8 +125,8 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_MGT_EXTENSIONS; - attr->max_sge = min(dev->attr.max_send_sge, dev->attr.max_srq_sge); - attr->max_sge_rd = 0; + attr->max_sge = dev->attr.max_send_sge; + attr->max_sge_rd = attr->max_sge; attr->max_cq = dev->attr.max_cq; attr->max_cqe = dev->attr.max_cqe; attr->max_mr = dev->attr.max_mr; -- cgit v1.2.3 From aff3ead9fa25b2a472d1a894365f66b28e1e2787 Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Fri, 5 Feb 2016 20:06:39 +0530 Subject: RDMA/ocrdma: Fix pkey_index returned by driver in rq work completion Currently returning the pkey value instead of pkey index. pkey index is always zero since ocrdma supports only default pkey. Signed-off-by: Selvin Xavier Signed-off-by: Doug Ledford --- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 7cf1324ad081..37620b4baafb 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -2726,8 +2726,7 @@ static int ocrdma_update_ud_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe) OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT; ibwc->src_qp = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_SRCQP_MASK; - ibwc->pkey_index = le32_to_cpu(cqe->ud.rxlen_pkey) & - OCRDMA_CQE_PKEY_MASK; + ibwc->pkey_index = 0; ibwc->wc_flags = IB_WC_GRH; ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >> OCRDMA_CQE_UD_XFER_LEN_SHIFT); -- cgit v1.2.3 From 7425f410ca6cffe81400906286f80e8e15d9b301 Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Fri, 5 Feb 2016 20:06:40 +0530 Subject: RDMA/ocrdma: Fixing ocrdma debugfs directory remove During the ocrdma device remove sequence, the debugfs directory tree of each ocrdma device needs to be removed. Use debugfs_remove_recursive instead of debugfs_remove. Signed-off-by: Selvin Xavier Signed-off-by: Doug Ledford --- drivers/infiniband/hw/ocrdma/ocrdma_stats.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c index fc02e86849ce..255f774080a4 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c @@ -851,7 +851,7 @@ void ocrdma_rem_port_stats(struct ocrdma_dev *dev) { if (!dev->dir) return; - debugfs_remove(dev->dir); + debugfs_remove_recursive(dev->dir); } void ocrdma_init_debugfs(void) -- cgit v1.2.3 From 0f4a943168f31d29a1701908931acaba518b131a Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 19 Jan 2016 15:23:02 -0800 Subject: target: Fix remote-port TMR ABORT + se_cmd fabric stop To address the bug where fabric driver level shutdown of se_cmd occurs at the same time when TMR CMD_T_ABORTED is happening resulting in a -1 ->cmd_kref, this patch adds a CMD_T_FABRIC_STOP bit that is used to determine when TMR + driver I_T nexus shutdown is happening concurrently. It changes target_sess_cmd_list_set_waiting() to obtain se_cmd->cmd_kref + set CMD_T_FABRIC_STOP, and drop local reference in target_wait_for_sess_cmds() and invoke extra target_put_sess_cmd() during Task Aborted Status (TAS) when necessary. Also, it adds a new target_wait_free_cmd() wrapper around transport_wait_for_tasks() for the special case within transport_generic_free_cmd() to set CMD_T_FABRIC_STOP, and is now aware of CMD_T_ABORTED + CMD_T_TAS status bits to know when an extra transport_put_cmd() during TAS is required. Note transport_generic_free_cmd() is expected to block on cmd->cmd_wait_comp in order to follow what iscsi-target expects during iscsi_conn context se_cmd shutdown. Cc: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tmr.c | 54 ++++++++---- drivers/target/target_core_transport.c | 145 +++++++++++++++++++++++++-------- 2 files changed, 148 insertions(+), 51 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index 3e0d77a4c7b6..82a663ba9800 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -75,16 +75,18 @@ void core_tmr_release_req(struct se_tmr_req *tmr) kfree(tmr); } -static void core_tmr_handle_tas_abort( - struct se_session *tmr_sess, - struct se_cmd *cmd, - int tas) +static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas) { - bool remove = true; + unsigned long flags; + bool remove = true, send_tas; /* * TASK ABORTED status (TAS) bit support */ - if (tmr_sess && tmr_sess != cmd->se_sess && tas) { + spin_lock_irqsave(&cmd->t_state_lock, flags); + send_tas = (cmd->transport_state & CMD_T_TAS); + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + + if (send_tas) { remove = false; transport_send_task_abort(cmd); } @@ -107,7 +109,8 @@ static int target_check_cdb_and_preempt(struct list_head *list, return 1; } -static bool __target_check_io_state(struct se_cmd *se_cmd) +static bool __target_check_io_state(struct se_cmd *se_cmd, + struct se_session *tmr_sess, int tas) { struct se_session *sess = se_cmd->se_sess; @@ -115,21 +118,32 @@ static bool __target_check_io_state(struct se_cmd *se_cmd) WARN_ON_ONCE(!irqs_disabled()); /* * If command already reached CMD_T_COMPLETE state within - * target_complete_cmd(), this se_cmd has been passed to - * fabric driver and will not be aborted. + * target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown, + * this se_cmd has been passed to fabric driver and will + * not be aborted. * * Otherwise, obtain a local se_cmd->cmd_kref now for TMR * ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as * long as se_cmd->cmd_kref is still active unless zero. */ spin_lock(&se_cmd->t_state_lock); - if (se_cmd->transport_state & CMD_T_COMPLETE) { - pr_debug("Attempted to abort io tag: %llu already complete," + if (se_cmd->transport_state & (CMD_T_COMPLETE | CMD_T_FABRIC_STOP)) { + pr_debug("Attempted to abort io tag: %llu already complete or" + " fabric stop, skipping\n", se_cmd->tag); + spin_unlock(&se_cmd->t_state_lock); + return false; + } + if (sess->sess_tearing_down || se_cmd->cmd_wait_set) { + pr_debug("Attempted to abort io tag: %llu already shutdown," " skipping\n", se_cmd->tag); spin_unlock(&se_cmd->t_state_lock); return false; } se_cmd->transport_state |= CMD_T_ABORTED; + + if ((tmr_sess != se_cmd->se_sess) && tas) + se_cmd->transport_state |= CMD_T_TAS; + spin_unlock(&se_cmd->t_state_lock); return kref_get_unless_zero(&se_cmd->cmd_kref); @@ -161,7 +175,7 @@ void core_tmr_abort_task( printk("ABORT_TASK: Found referenced %s task_tag: %llu\n", se_cmd->se_tfo->get_fabric_name(), ref_tag); - if (!__target_check_io_state(se_cmd)) { + if (!__target_check_io_state(se_cmd, se_sess, 0)) { spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); target_put_sess_cmd(se_cmd); goto out; @@ -230,7 +244,8 @@ static void core_tmr_drain_tmr_list( spin_lock(&sess->sess_cmd_lock); spin_lock(&cmd->t_state_lock); - if (!(cmd->transport_state & CMD_T_ACTIVE)) { + if (!(cmd->transport_state & CMD_T_ACTIVE) || + (cmd->transport_state & CMD_T_FABRIC_STOP)) { spin_unlock(&cmd->t_state_lock); spin_unlock(&sess->sess_cmd_lock); continue; @@ -240,15 +255,22 @@ static void core_tmr_drain_tmr_list( spin_unlock(&sess->sess_cmd_lock); continue; } + if (sess->sess_tearing_down || cmd->cmd_wait_set) { + spin_unlock(&cmd->t_state_lock); + spin_unlock(&sess->sess_cmd_lock); + continue; + } cmd->transport_state |= CMD_T_ABORTED; spin_unlock(&cmd->t_state_lock); rc = kref_get_unless_zero(&cmd->cmd_kref); - spin_unlock(&sess->sess_cmd_lock); if (!rc) { printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n"); + spin_unlock(&sess->sess_cmd_lock); continue; } + spin_unlock(&sess->sess_cmd_lock); + list_move_tail(&tmr_p->tmr_list, &drain_tmr_list); } spin_unlock_irqrestore(&dev->se_tmr_lock, flags); @@ -325,7 +347,7 @@ static void core_tmr_drain_state_list( continue; spin_lock(&sess->sess_cmd_lock); - rc = __target_check_io_state(cmd); + rc = __target_check_io_state(cmd, tmr_sess, tas); spin_unlock(&sess->sess_cmd_lock); if (!rc) continue; @@ -364,7 +386,7 @@ static void core_tmr_drain_state_list( cancel_work_sync(&cmd->work); transport_wait_for_tasks(cmd); - core_tmr_handle_tas_abort(tmr_sess, cmd, tas); + core_tmr_handle_tas_abort(cmd, tas); target_put_sess_cmd(cmd); } } diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 94e372af9e28..3441b159e306 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2431,18 +2431,33 @@ static void transport_write_pending_qf(struct se_cmd *cmd) } } +static bool +__transport_wait_for_tasks(struct se_cmd *, bool, bool *, bool *, + unsigned long *flags); + +static void target_wait_free_cmd(struct se_cmd *cmd, bool *aborted, bool *tas) +{ + unsigned long flags; + + spin_lock_irqsave(&cmd->t_state_lock, flags); + __transport_wait_for_tasks(cmd, true, aborted, tas, &flags); + spin_unlock_irqrestore(&cmd->t_state_lock, flags); +} + int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) { int ret = 0; + bool aborted = false, tas = false; if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) { if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) - transport_wait_for_tasks(cmd); + target_wait_free_cmd(cmd, &aborted, &tas); - ret = transport_put_cmd(cmd); + if (!aborted || tas) + ret = transport_put_cmd(cmd); } else { if (wait_for_tasks) - transport_wait_for_tasks(cmd); + target_wait_free_cmd(cmd, &aborted, &tas); /* * Handle WRITE failure case where transport_generic_new_cmd() * has already added se_cmd to state_list, but fabric has @@ -2454,7 +2469,20 @@ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) if (cmd->se_lun) transport_lun_remove_cmd(cmd); - ret = transport_put_cmd(cmd); + if (!aborted || tas) + ret = transport_put_cmd(cmd); + } + /* + * If the task has been internally aborted due to TMR ABORT_TASK + * or LUN_RESET, target_core_tmr.c is responsible for performing + * the remaining calls to target_put_sess_cmd(), and not the + * callers of this function. + */ + if (aborted) { + pr_debug("Detected CMD_T_ABORTED for ITT: %llu\n", cmd->tag); + wait_for_completion(&cmd->cmd_wait_comp); + cmd->se_tfo->release_cmd(cmd); + ret = 1; } return ret; } @@ -2509,6 +2537,7 @@ static void target_release_cmd_kref(struct kref *kref) struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref); struct se_session *se_sess = se_cmd->se_sess; unsigned long flags; + bool fabric_stop; spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); if (list_empty(&se_cmd->se_cmd_list)) { @@ -2517,13 +2546,19 @@ static void target_release_cmd_kref(struct kref *kref) se_cmd->se_tfo->release_cmd(se_cmd); return; } - if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) { + + spin_lock(&se_cmd->t_state_lock); + fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP); + spin_unlock(&se_cmd->t_state_lock); + + if (se_cmd->cmd_wait_set || fabric_stop) { + list_del_init(&se_cmd->se_cmd_list); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); target_free_cmd_mem(se_cmd); complete(&se_cmd->cmd_wait_comp); return; } - list_del(&se_cmd->se_cmd_list); + list_del_init(&se_cmd->se_cmd_list); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); target_free_cmd_mem(se_cmd); @@ -2555,6 +2590,7 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) { struct se_cmd *se_cmd; unsigned long flags; + int rc; spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); if (se_sess->sess_tearing_down) { @@ -2564,8 +2600,15 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) se_sess->sess_tearing_down = 1; list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list); - list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) - se_cmd->cmd_wait_set = 1; + list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) { + rc = kref_get_unless_zero(&se_cmd->cmd_kref); + if (rc) { + se_cmd->cmd_wait_set = 1; + spin_lock(&se_cmd->t_state_lock); + se_cmd->transport_state |= CMD_T_FABRIC_STOP; + spin_unlock(&se_cmd->t_state_lock); + } + } spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); } @@ -2578,15 +2621,25 @@ void target_wait_for_sess_cmds(struct se_session *se_sess) { struct se_cmd *se_cmd, *tmp_cmd; unsigned long flags; + bool tas; list_for_each_entry_safe(se_cmd, tmp_cmd, &se_sess->sess_wait_list, se_cmd_list) { - list_del(&se_cmd->se_cmd_list); + list_del_init(&se_cmd->se_cmd_list); pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:" " %d\n", se_cmd, se_cmd->t_state, se_cmd->se_tfo->get_cmd_state(se_cmd)); + spin_lock_irqsave(&se_cmd->t_state_lock, flags); + tas = (se_cmd->transport_state & CMD_T_TAS); + spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); + + if (!target_put_sess_cmd(se_cmd)) { + if (tas) + target_put_sess_cmd(se_cmd); + } + wait_for_completion(&se_cmd->cmd_wait_comp); pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d" " fabric state: %d\n", se_cmd, se_cmd->t_state, @@ -2608,53 +2661,75 @@ void transport_clear_lun_ref(struct se_lun *lun) wait_for_completion(&lun->lun_ref_comp); } -/** - * transport_wait_for_tasks - wait for completion to occur - * @cmd: command to wait - * - * Called from frontend fabric context to wait for storage engine - * to pause and/or release frontend generated struct se_cmd. - */ -bool transport_wait_for_tasks(struct se_cmd *cmd) +static bool +__transport_wait_for_tasks(struct se_cmd *cmd, bool fabric_stop, + bool *aborted, bool *tas, unsigned long *flags) + __releases(&cmd->t_state_lock) + __acquires(&cmd->t_state_lock) { - unsigned long flags; - spin_lock_irqsave(&cmd->t_state_lock, flags); + assert_spin_locked(&cmd->t_state_lock); + WARN_ON_ONCE(!irqs_disabled()); + + if (fabric_stop) + cmd->transport_state |= CMD_T_FABRIC_STOP; + + if (cmd->transport_state & CMD_T_ABORTED) + *aborted = true; + + if (cmd->transport_state & CMD_T_TAS) + *tas = true; + if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) && - !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) return false; - } if (!(cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE) && - !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) return false; - } - if (!(cmd->transport_state & CMD_T_ACTIVE)) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + if (!(cmd->transport_state & CMD_T_ACTIVE)) + return false; + + if (fabric_stop && *aborted) return false; - } cmd->transport_state |= CMD_T_STOP; - pr_debug("wait_for_tasks: Stopping %p ITT: 0x%08llx i_state: %d, t_state: %d, CMD_T_STOP\n", - cmd, cmd->tag, cmd->se_tfo->get_cmd_state(cmd), cmd->t_state); + pr_debug("wait_for_tasks: Stopping %p ITT: 0x%08llx i_state: %d," + " t_state: %d, CMD_T_STOP\n", cmd, cmd->tag, + cmd->se_tfo->get_cmd_state(cmd), cmd->t_state); - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + spin_unlock_irqrestore(&cmd->t_state_lock, *flags); wait_for_completion(&cmd->t_transport_stop_comp); - spin_lock_irqsave(&cmd->t_state_lock, flags); + spin_lock_irqsave(&cmd->t_state_lock, *flags); cmd->transport_state &= ~(CMD_T_ACTIVE | CMD_T_STOP); - pr_debug("wait_for_tasks: Stopped wait_for_completion(&cmd->t_transport_stop_comp) for ITT: 0x%08llx\n", - cmd->tag); + pr_debug("wait_for_tasks: Stopped wait_for_completion(&cmd->" + "t_transport_stop_comp) for ITT: 0x%08llx\n", cmd->tag); + return true; +} + +/** + * transport_wait_for_tasks - wait for completion to occur + * @cmd: command to wait + * + * Called from frontend fabric context to wait for storage engine + * to pause and/or release frontend generated struct se_cmd. + */ +bool transport_wait_for_tasks(struct se_cmd *cmd) +{ + unsigned long flags; + bool ret, aborted = false, tas = false; + + spin_lock_irqsave(&cmd->t_state_lock, flags); + ret = __transport_wait_for_tasks(cmd, false, &aborted, &tas, &flags); spin_unlock_irqrestore(&cmd->t_state_lock, flags); - return true; + return ret; } EXPORT_SYMBOL(transport_wait_for_tasks); -- cgit v1.2.3 From d961436c11482e974b702c8324426208f00cd7c4 Mon Sep 17 00:00:00 2001 From: Cyrille Pitchen Date: Fri, 5 Feb 2016 13:45:12 +0100 Subject: crypto: atmel-sha - fix atmel_sha_remove() Since atmel_sha_probe() uses devm_xxx functions to allocate resources, atmel_sha_remove() should no longer explicitly release them. Cc: stable@vger.kernel.org Signed-off-by: Cyrille Pitchen Fixes: b0e8b3417a62 ("crypto: atmel - use devm_xxx() managed function") Signed-off-by: Herbert Xu --- drivers/crypto/atmel-sha.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c index 20de861aa0ea..b5ab7400008d 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -1483,13 +1483,6 @@ static int atmel_sha_remove(struct platform_device *pdev) if (sha_dd->caps.has_dma) atmel_sha_dma_cleanup(sha_dd); - iounmap(sha_dd->io_base); - - clk_put(sha_dd->iclk); - - if (sha_dd->irq >= 0) - free_irq(sha_dd->irq, sha_dd); - return 0; } -- cgit v1.2.3 From c033042aa8f69894df37dabcaa0231594834a4e4 Mon Sep 17 00:00:00 2001 From: Cyrille Pitchen Date: Fri, 5 Feb 2016 13:45:13 +0100 Subject: crypto: atmel-sha - remove calls of clk_prepare() from atomic contexts clk_prepare()/clk_unprepare() must not be called within atomic context. This patch calls clk_prepare() once for all from atmel_sha_probe() and clk_unprepare() from atmel_sha_remove(). Then calls of clk_prepare_enable()/clk_disable_unprepare() were replaced by calls of clk_enable()/clk_disable(). Cc: stable@vger.kernel.org Signed-off-by: Cyrille Pitchen Reported-by: Matthias Mayr Signed-off-by: Herbert Xu --- drivers/crypto/atmel-sha.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c index b5ab7400008d..8bf9914d4d15 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -782,7 +782,7 @@ static void atmel_sha_finish_req(struct ahash_request *req, int err) dd->flags &= ~(SHA_FLAGS_BUSY | SHA_FLAGS_FINAL | SHA_FLAGS_CPU | SHA_FLAGS_DMA_READY | SHA_FLAGS_OUTPUT_READY); - clk_disable_unprepare(dd->iclk); + clk_disable(dd->iclk); if (req->base.complete) req->base.complete(&req->base, err); @@ -795,7 +795,7 @@ static int atmel_sha_hw_init(struct atmel_sha_dev *dd) { int err; - err = clk_prepare_enable(dd->iclk); + err = clk_enable(dd->iclk); if (err) return err; @@ -822,7 +822,7 @@ static void atmel_sha_hw_version_init(struct atmel_sha_dev *dd) dev_info(dd->dev, "version: 0x%x\n", dd->hw_version); - clk_disable_unprepare(dd->iclk); + clk_disable(dd->iclk); } static int atmel_sha_handle_queue(struct atmel_sha_dev *dd, @@ -1410,6 +1410,10 @@ static int atmel_sha_probe(struct platform_device *pdev) goto res_err; } + err = clk_prepare(sha_dd->iclk); + if (err) + goto res_err; + atmel_sha_hw_version_init(sha_dd); atmel_sha_get_cap(sha_dd); @@ -1421,12 +1425,12 @@ static int atmel_sha_probe(struct platform_device *pdev) if (IS_ERR(pdata)) { dev_err(&pdev->dev, "platform data not available\n"); err = PTR_ERR(pdata); - goto res_err; + goto iclk_unprepare; } } if (!pdata->dma_slave) { err = -ENXIO; - goto res_err; + goto iclk_unprepare; } err = atmel_sha_dma_init(sha_dd, pdata); if (err) @@ -1457,6 +1461,8 @@ err_algs: if (sha_dd->caps.has_dma) atmel_sha_dma_cleanup(sha_dd); err_sha_dma: +iclk_unprepare: + clk_unprepare(sha_dd->iclk); res_err: tasklet_kill(&sha_dd->done_task); sha_dd_err: @@ -1483,6 +1489,8 @@ static int atmel_sha_remove(struct platform_device *pdev) if (sha_dd->caps.has_dma) atmel_sha_dma_cleanup(sha_dd); + clk_unprepare(sha_dd->iclk); + return 0; } -- cgit v1.2.3 From 8a3978ad55fb4c0564d285fb2f6cdee2313fce01 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Fri, 5 Feb 2016 17:45:48 +0100 Subject: crypto: marvell/cesa - fix test in mv_cesa_dev_dma_init() We are checking twice if dma->cache_pool is not NULL but are never testing dma->padding_pool value. Cc: stable@vger.kernel.org Signed-off-by: Boris Brezillon Signed-off-by: Herbert Xu --- drivers/crypto/marvell/cesa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index 0643e3366e33..c0656e7f37b5 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -306,7 +306,7 @@ static int mv_cesa_dev_dma_init(struct mv_cesa_dev *cesa) return -ENOMEM; dma->padding_pool = dmam_pool_create("cesa_padding", dev, 72, 1, 0); - if (!dma->cache_pool) + if (!dma->padding_pool) return -ENOMEM; cesa->dma = dma; -- cgit v1.2.3 From 3647bc35bd427610a70eb83c58c5e834262badfa Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Tue, 2 Feb 2016 09:39:02 +0100 Subject: dwc_eth_qos: Reset hardware before PHY start The hardware reset is currently done after phy_start() is called, leading to a race where we can lose the link status if the phy state machine calls dwceqos_adjust_link() before we reset the MAC registers. Acked-by: Lars Persson Signed-off-by: Rabin Vincent Signed-off-by: David S. Miller --- drivers/net/ethernet/synopsys/dwc_eth_qos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/synopsys/dwc_eth_qos.c b/drivers/net/ethernet/synopsys/dwc_eth_qos.c index 70814b7386b3..fc8bbff2d7e3 100644 --- a/drivers/net/ethernet/synopsys/dwc_eth_qos.c +++ b/drivers/net/ethernet/synopsys/dwc_eth_qos.c @@ -1880,9 +1880,9 @@ static int dwceqos_open(struct net_device *ndev) } netdev_reset_queue(ndev); + dwceqos_init_hw(lp); napi_enable(&lp->napi); phy_start(lp->phy_dev); - dwceqos_init_hw(lp); netif_start_queue(ndev); tasklet_enable(&lp->tx_bdreclaim_tasklet); -- cgit v1.2.3 From 310d3d314be7f0a84011ebdc4bdccbcae9755a87 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 5 Feb 2016 14:51:36 -0800 Subject: target: Fix race with SCF_SEND_DELAYED_TAS handling This patch fixes a race between setting of SCF_SEND_DELAYED_TAS in transport_send_task_abort(), and check of the same bit in transport_check_aborted_status(). It adds a __transport_check_aborted_status() version that is used by target_execute_cmd() when se_cmd->t_state_lock is held, and a transport_check_aborted_status() wrapper for all other existing callers. Also, it handles the case where the check happens before transport_send_task_abort() gets called. For this, go ahead and set SCF_SEND_DELAYED_TAS early when necessary, and have transport_send_task_abort() send the abort. Cc: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_transport.c | 53 ++++++++++++++++++++++++++-------- 1 file changed, 41 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 3441b159e306..2e0b23a3d5c4 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1858,19 +1858,21 @@ static bool target_handle_task_attr(struct se_cmd *cmd) return true; } +static int __transport_check_aborted_status(struct se_cmd *, int); + void target_execute_cmd(struct se_cmd *cmd) { - /* - * If the received CDB has aleady been aborted stop processing it here. - */ - if (transport_check_aborted_status(cmd, 1)) - return; - /* * Determine if frontend context caller is requesting the stopping of * this command for frontend exceptions. + * + * If the received CDB has aleady been aborted stop processing it here. */ spin_lock_irq(&cmd->t_state_lock); + if (__transport_check_aborted_status(cmd, 1)) { + spin_unlock_irq(&cmd->t_state_lock); + return; + } if (cmd->transport_state & CMD_T_STOP) { pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08llx\n", __func__, __LINE__, cmd->tag); @@ -2911,28 +2913,49 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd, } EXPORT_SYMBOL(transport_send_check_condition_and_sense); -int transport_check_aborted_status(struct se_cmd *cmd, int send_status) +static int __transport_check_aborted_status(struct se_cmd *cmd, int send_status) + __releases(&cmd->t_state_lock) + __acquires(&cmd->t_state_lock) { + assert_spin_locked(&cmd->t_state_lock); + WARN_ON_ONCE(!irqs_disabled()); + if (!(cmd->transport_state & CMD_T_ABORTED)) return 0; - /* * If cmd has been aborted but either no status is to be sent or it has * already been sent, just return */ - if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS)) + if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS)) { + if (send_status) + cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; return 1; + } - pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB: 0x%02x ITT: 0x%08llx\n", - cmd->t_task_cdb[0], cmd->tag); + pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB:" + " 0x%02x ITT: 0x%08llx\n", cmd->t_task_cdb[0], cmd->tag); cmd->se_cmd_flags &= ~SCF_SEND_DELAYED_TAS; cmd->scsi_status = SAM_STAT_TASK_ABORTED; trace_target_cmd_complete(cmd); + + spin_unlock_irq(&cmd->t_state_lock); cmd->se_tfo->queue_status(cmd); + spin_lock_irq(&cmd->t_state_lock); return 1; } + +int transport_check_aborted_status(struct se_cmd *cmd, int send_status) +{ + int ret; + + spin_lock_irq(&cmd->t_state_lock); + ret = __transport_check_aborted_status(cmd, send_status); + spin_unlock_irq(&cmd->t_state_lock); + + return ret; +} EXPORT_SYMBOL(transport_check_aborted_status); void transport_send_task_abort(struct se_cmd *cmd) @@ -2954,11 +2977,17 @@ void transport_send_task_abort(struct se_cmd *cmd) */ if (cmd->data_direction == DMA_TO_DEVICE) { if (cmd->se_tfo->write_pending_status(cmd) != 0) { - cmd->transport_state |= CMD_T_ABORTED; + spin_lock_irqsave(&cmd->t_state_lock, flags); + if (cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS) { + spin_unlock_irqrestore(&cmd->t_state_lock, flags); + goto send_abort; + } cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; + spin_unlock_irqrestore(&cmd->t_state_lock, flags); return; } } +send_abort: cmd->scsi_status = SAM_STAT_TASK_ABORTED; transport_lun_remove_cmd(cmd); -- cgit v1.2.3 From 57dae19065bde296dfdf08b8e46c102a671ff741 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Fri, 29 Jan 2016 00:07:25 -0800 Subject: target: Drop legacy se_cmd->task_stop_comp + REQUEST_STOP usage With CMD_T_FABRIC_STOP + se_cmd->cmd_wait_set usage in place, go ahead and drop left-over CMD_T_REQUEST_STOP checks in target_complete_cmd() and unused target_stop_cmd(). Reviewed-by: Christoph Hellwig Cc: Quinn Tran Cc: Himanshu Madhani Cc: Sagi Grimberg Cc: Hannes Reinecke Cc: Andy Grover Cc: Mike Christie Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_internal.h | 1 - drivers/target/target_core_transport.c | 37 ---------------------------------- 2 files changed, 38 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index dae0750c2032..db4412fe6b8a 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -141,7 +141,6 @@ void transport_dump_vpd_proto_id(struct t10_vpd *, unsigned char *, int); int transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int); int transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int); int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int); -bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags); void transport_clear_lun_ref(struct se_lun *); void transport_send_task_abort(struct se_cmd *); sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2e0b23a3d5c4..d92cb644d8f9 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -692,15 +692,6 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) success = 1; } - /* - * See if we are waiting to complete for an exception condition. - */ - if (cmd->transport_state & CMD_T_REQUEST_STOP) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - complete(&cmd->task_stop_comp); - return; - } - /* * Check for case where an explicit ABORT_TASK has been received * and transport_wait_for_tasks() will be waiting for completion.. @@ -1202,7 +1193,6 @@ void transport_init_se_cmd( INIT_LIST_HEAD(&cmd->state_list); init_completion(&cmd->t_transport_stop_comp); init_completion(&cmd->cmd_wait_comp); - init_completion(&cmd->task_stop_comp); spin_lock_init(&cmd->t_state_lock); kref_init(&cmd->cmd_kref); cmd->transport_state = CMD_T_DEV_ACTIVE; @@ -1633,33 +1623,6 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, } EXPORT_SYMBOL(target_submit_tmr); -/* - * If the cmd is active, request it to be stopped and sleep until it - * has completed. - */ -bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags) - __releases(&cmd->t_state_lock) - __acquires(&cmd->t_state_lock) -{ - bool was_active = false; - - if (cmd->transport_state & CMD_T_BUSY) { - cmd->transport_state |= CMD_T_REQUEST_STOP; - spin_unlock_irqrestore(&cmd->t_state_lock, *flags); - - pr_debug("cmd %p waiting to complete\n", cmd); - wait_for_completion(&cmd->task_stop_comp); - pr_debug("cmd %p stopped successfully\n", cmd); - - spin_lock_irqsave(&cmd->t_state_lock, *flags); - cmd->transport_state &= ~CMD_T_REQUEST_STOP; - cmd->transport_state &= ~CMD_T_BUSY; - was_active = true; - } - - return was_active; -} - /* * Handle SAM-esque emulation for generic transport request failures. */ -- cgit v1.2.3 From 0633e123465b61a12a262b742bebf2a9945f7964 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 1 Feb 2016 17:29:45 +0100 Subject: target/user: Fix cast from pointer to phys_addr_t The uio_mem structure has a member that is a phys_addr_t, but can be a number of other types too. The target core driver attempts to assign a pointer from vmalloc() to it, by casting it to phys_addr_t, but that causes a warning when phys_addr_t is longer than a pointer: drivers/target/target_core_user.c: In function 'tcmu_configure_device': drivers/target/target_core_user.c:906:22: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] This adds another cast to uintptr_t to shut up the warning. A nicer fix might be to have additional fields in uio_mem for the different purposes, so we can assign a pointer directly. Signed-off-by: Arnd Bergmann Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index dd600e5ead71..94f5154ac788 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -903,7 +903,7 @@ static int tcmu_configure_device(struct se_device *dev) info->version = __stringify(TCMU_MAILBOX_VERSION); info->mem[0].name = "tcm-user command & data buffer"; - info->mem[0].addr = (phys_addr_t) udev->mb_addr; + info->mem[0].addr = (phys_addr_t)(uintptr_t)udev->mb_addr; info->mem[0].size = TCMU_RING_SIZE; info->mem[0].memtype = UIO_MEM_VIRTUAL; -- cgit v1.2.3 From e9036d0662360cd4c79578565ce422ed5872f301 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 5 Feb 2016 10:49:36 -0800 Subject: tty: Drop krefs for interrupted tty lock When the tty lock is interrupted on attempted re-open, 2 tty krefs are still held. Drop extra kref before returning failure from tty_lock_interruptible(), and drop lookup kref before returning failure from tty_open(). Fixes: 0bfd464d3fdd ("tty: Wait interruptibly for tty lock on reopen") Reported-by: Dmitry Vyukov Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_io.c | 3 +-- drivers/tty/tty_mutex.c | 7 ++++++- 2 files changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 5cec01c75691..a7eacef1bd22 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2066,13 +2066,12 @@ retry_open: if (tty) { mutex_unlock(&tty_mutex); retval = tty_lock_interruptible(tty); + tty_kref_put(tty); /* drop kref from tty_driver_lookup_tty() */ if (retval) { if (retval == -EINTR) retval = -ERESTARTSYS; goto err_unref; } - /* safe to drop the kref from tty_driver_lookup_tty() */ - tty_kref_put(tty); retval = tty_reopen(tty); if (retval < 0) { tty_unlock(tty); diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c index d2f3c4cd697f..dfa9ec03fa8e 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -21,10 +21,15 @@ EXPORT_SYMBOL(tty_lock); int tty_lock_interruptible(struct tty_struct *tty) { + int ret; + if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty)) return -EIO; tty_kref_get(tty); - return mutex_lock_interruptible(&tty->legacy_mutex); + ret = mutex_lock_interruptible(&tty->legacy_mutex); + if (ret) + tty_kref_put(tty); + return ret; } void __lockfunc tty_unlock(struct tty_struct *tty) -- cgit v1.2.3 From cb43285ff7039fe3c4b0bc476e6d6569c31104f3 Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Thu, 4 Feb 2016 11:45:16 -0500 Subject: qla2xxx: Fix stale pointer access. [ Upstream Commit 84e32a06f4f8756ce9ec3c8dc7e97896575f0771 ] Commit 84e32a0 ("qla2xxx: Use pci_enable_msix_range() instead of pci_enable_msix()") introduced a regression when target mode is enabled. In qla24xx_enable_msix(), ha->max_rsp_queues was incorrectly set to a value higher than the number of response queues allocated causing an invalid dereference. Specifically here in qla2x00_init_rings(): *rsp->in_ptr = 0; Add additional check to make sure the pointer is valid. following call stack will be seen ---- 8< ---- RIP: 0010:[] [] qla2x00_init_rings+0xdc/0x320 [qla2xxx] RSP: 0018:ffff880429447dd8 EFLAGS: 00010082 .... Call Trace: [] qla2x00_abort_isp+0x170/0x6b0 [qla2xxx] [] qla2x00_do_dpc+0x357/0x7f0 [qla2xxx] [] ? qla2x00_relogin+0x260/0x260 [qla2xxx] [] kthread+0xc9/0xe0 [] ? flush_kthread_worker+0x90/0x90 [] ret_from_fork+0x3f/0x70 [] ? flush_kthread_worker+0x90/0x90 ---- 8< ---- Cc: Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_init.c | 10 +++++----- drivers/scsi/qla2xxx/qla_isr.c | 4 ++-- drivers/scsi/qla2xxx/qla_mid.c | 4 ++-- drivers/scsi/qla2xxx/qla_os.c | 6 ++++++ drivers/scsi/qla2xxx/qla_tmpl.c | 16 ++++++++++++++++ 5 files changed, 31 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 52a87657c7dd..692a7570b5e1 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2204,7 +2204,7 @@ qla2x00_init_rings(scsi_qla_host_t *vha) /* Clear outstanding commands array. */ for (que = 0; que < ha->max_req_queues; que++) { req = ha->req_q_map[que]; - if (!req) + if (!req || !test_bit(que, ha->req_qid_map)) continue; req->out_ptr = (void *)(req->ring + req->length); *req->out_ptr = 0; @@ -2221,7 +2221,7 @@ qla2x00_init_rings(scsi_qla_host_t *vha) for (que = 0; que < ha->max_rsp_queues; que++) { rsp = ha->rsp_q_map[que]; - if (!rsp) + if (!rsp || !test_bit(que, ha->rsp_qid_map)) continue; rsp->in_ptr = (void *)(rsp->ring + rsp->length); *rsp->in_ptr = 0; @@ -4981,7 +4981,7 @@ qla25xx_init_queues(struct qla_hw_data *ha) for (i = 1; i < ha->max_rsp_queues; i++) { rsp = ha->rsp_q_map[i]; - if (rsp) { + if (rsp && test_bit(i, ha->rsp_qid_map)) { rsp->options &= ~BIT_0; ret = qla25xx_init_rsp_que(base_vha, rsp); if (ret != QLA_SUCCESS) @@ -4996,8 +4996,8 @@ qla25xx_init_queues(struct qla_hw_data *ha) } for (i = 1; i < ha->max_req_queues; i++) { req = ha->req_q_map[i]; - if (req) { - /* Clear outstanding commands array. */ + if (req && test_bit(i, ha->req_qid_map)) { + /* Clear outstanding commands array. */ req->options &= ~BIT_0; ret = qla25xx_init_req_que(base_vha, req); if (ret != QLA_SUCCESS) diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index d4d65eb0e9b4..4af95479a9db 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3063,9 +3063,9 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp) "MSI-X: Failed to enable support " "-- %d/%d\n Retry with %d vectors.\n", ha->msix_count, ret, ret); + ha->msix_count = ret; + ha->max_rsp_queues = ha->msix_count - 1; } - ha->msix_count = ret; - ha->max_rsp_queues = ha->msix_count - 1; ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) * ha->msix_count, GFP_KERNEL); if (!ha->msix_entries) { diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index c5dd594f6c31..cf7ba52bae66 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -600,7 +600,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha) /* Delete request queues */ for (cnt = 1; cnt < ha->max_req_queues; cnt++) { req = ha->req_q_map[cnt]; - if (req) { + if (req && test_bit(cnt, ha->req_qid_map)) { ret = qla25xx_delete_req_que(vha, req); if (ret != QLA_SUCCESS) { ql_log(ql_log_warn, vha, 0x00ea, @@ -614,7 +614,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha) /* Delete response queues */ for (cnt = 1; cnt < ha->max_rsp_queues; cnt++) { rsp = ha->rsp_q_map[cnt]; - if (rsp) { + if (rsp && test_bit(cnt, ha->rsp_qid_map)) { ret = qla25xx_delete_rsp_que(vha, rsp); if (ret != QLA_SUCCESS) { ql_log(ql_log_warn, vha, 0x00eb, diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f1788db43195..f6c7ce35b542 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -409,6 +409,9 @@ static void qla2x00_free_queues(struct qla_hw_data *ha) int cnt; for (cnt = 0; cnt < ha->max_req_queues; cnt++) { + if (!test_bit(cnt, ha->req_qid_map)) + continue; + req = ha->req_q_map[cnt]; qla2x00_free_req_que(ha, req); } @@ -416,6 +419,9 @@ static void qla2x00_free_queues(struct qla_hw_data *ha) ha->req_q_map = NULL; for (cnt = 0; cnt < ha->max_rsp_queues; cnt++) { + if (!test_bit(cnt, ha->rsp_qid_map)) + continue; + rsp = ha->rsp_q_map[cnt]; qla2x00_free_rsp_que(ha, rsp); } diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c index ddbe2e7ac14d..c3e622524604 100644 --- a/drivers/scsi/qla2xxx/qla_tmpl.c +++ b/drivers/scsi/qla2xxx/qla_tmpl.c @@ -395,6 +395,10 @@ qla27xx_fwdt_entry_t263(struct scsi_qla_host *vha, if (ent->t263.queue_type == T263_QUEUE_TYPE_REQ) { for (i = 0; i < vha->hw->max_req_queues; i++) { struct req_que *req = vha->hw->req_q_map[i]; + + if (!test_bit(i, vha->hw->req_qid_map)) + continue; + if (req || !buf) { length = req ? req->length : REQUEST_ENTRY_CNT_24XX; @@ -408,6 +412,10 @@ qla27xx_fwdt_entry_t263(struct scsi_qla_host *vha, } else if (ent->t263.queue_type == T263_QUEUE_TYPE_RSP) { for (i = 0; i < vha->hw->max_rsp_queues; i++) { struct rsp_que *rsp = vha->hw->rsp_q_map[i]; + + if (!test_bit(i, vha->hw->rsp_qid_map)) + continue; + if (rsp || !buf) { length = rsp ? rsp->length : RESPONSE_ENTRY_CNT_MQ; @@ -634,6 +642,10 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha, if (ent->t274.queue_type == T274_QUEUE_TYPE_REQ_SHAD) { for (i = 0; i < vha->hw->max_req_queues; i++) { struct req_que *req = vha->hw->req_q_map[i]; + + if (!test_bit(i, vha->hw->req_qid_map)) + continue; + if (req || !buf) { qla27xx_insert16(i, buf, len); qla27xx_insert16(1, buf, len); @@ -645,6 +657,10 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha, } else if (ent->t274.queue_type == T274_QUEUE_TYPE_RSP_SHAD) { for (i = 0; i < vha->hw->max_rsp_queues; i++) { struct rsp_que *rsp = vha->hw->rsp_q_map[i]; + + if (!test_bit(i, vha->hw->rsp_qid_map)) + continue; + if (rsp || !buf) { qla27xx_insert16(i, buf, len); qla27xx_insert16(1, buf, len); -- cgit v1.2.3 From d7236ac368212bd6fc8b45f050136ee53e6a6f2d Mon Sep 17 00:00:00 2001 From: Swapnil Nagle Date: Thu, 4 Feb 2016 11:45:17 -0500 Subject: qla2xxx: Use ATIO type to send correct tmr response The function value inside se_cmd can change if the TMR is cancelled. Use original ATIO Type to correctly determine CTIO response. Signed-off-by: Swapnil Nagle Signed-off-by: Himanshu Madhani Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 74eb776d2faa..46c667979411 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -1756,7 +1756,7 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); else { - if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK) + if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, mcmd->fc_tm_rsp, false); else -- cgit v1.2.3 From 7326fffb712f09a315bc73cc1ee63843f59b8bd4 Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Sun, 17 Jan 2016 12:25:01 +0200 Subject: mei: validate request value in client notify request ioctl This patch address a possible security issue: The request field in client notify request ioctl comes from user space as u32 and is downcasted to u8 with out validation. Check request field to have approved values MEI_HBM_NOTIFICATION_STAR/STOP Cc: #4.3+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 677d0362f334..80f9afcb1382 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -458,7 +458,11 @@ static int mei_ioctl_client_notify_request(struct file *file, u32 request) { struct mei_cl *cl = file->private_data; - return mei_cl_notify_request(cl, file, request); + if (request != MEI_HBM_NOTIFICATION_START && + request != MEI_HBM_NOTIFICATION_STOP) + return -EINVAL; + + return mei_cl_notify_request(cl, file, (u8)request); } /** -- cgit v1.2.3 From d56edd7ed0ed46a8043ee3040ededbd190818ccf Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 13 Jan 2016 23:33:59 +0100 Subject: 8250: uniphier: allow modular build with 8250 console The recently added uniphier 8250 port driver supports early console probing, and it supports being built as a module, but the combination of the two fails to link: ERROR: "early_serial8250_setup" [drivers/tty/serial/8250/8250_uniphier.ko] undefined! Given that earlycon support in a loadable module makes no sense, making that code conditional on 'MODULE' is a correct solution. Signed-off-by: Arnd Bergmann Fixes: b8d20e06eaad ("serial: 8250_uniphier: add earlycon support") Acked-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_uniphier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index bab6b3ae2540..1b7bd26555b7 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -35,7 +35,7 @@ struct uniphier8250_priv { spinlock_t atomic_write_lock; }; -#ifdef CONFIG_SERIAL_8250_CONSOLE +#if defined(CONFIG_SERIAL_8250_CONSOLE) && !defined(MODULE) static int __init uniphier_early_console_setup(struct earlycon_device *device, const char *options) { -- cgit v1.2.3 From 308bbc9ab838d0ace0298268c7970ba9513e2c65 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 12 Jan 2016 15:14:46 -0800 Subject: serial: omap: Prevent DoS using unprivileged ioctl(TIOCSRS485) The omap-serial driver emulates RS485 delays using software timers, but neglects to clamp the input values from the unprivileged ioctl(TIOCSRS485). Because the software implementation busy-waits, malicious userspace could stall the cpu for ~49 days. Clamp the input values to < 100ms. Fixes: 4a0ac0f55b18 ("OMAP: add RS485 support") Cc: # 3.12+ Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/omap-serial.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index b645f9228ed7..27d3b978f16e 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -1343,7 +1343,7 @@ static inline void serial_omap_add_console_port(struct uart_omap_port *up) /* Enable or disable the rs485 support */ static int -serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf) +serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485) { struct uart_omap_port *up = to_uart_omap_port(port); unsigned int mode; @@ -1356,8 +1356,12 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf) up->ier = 0; serial_out(up, UART_IER, 0); + /* Clamp the delays to [0, 100ms] */ + rs485->delay_rts_before_send = min(rs485->delay_rts_before_send, 100U); + rs485->delay_rts_after_send = min(rs485->delay_rts_after_send, 100U); + /* store new config */ - port->rs485 = *rs485conf; + port->rs485 = *rs485; /* * Just as a precaution, only allow rs485 -- cgit v1.2.3 From b4a512b8bf7185787e291cddad3b6457b2367120 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 13 Jan 2016 21:59:23 +0100 Subject: serial/omap: mark wait_for_xmitr as __maybe_unused The wait_for_xmitr() function is only used if CONFIG_CONSOLE_POLL or CONFIG_SERIAL_OMAP_CONSOLE are set, but when both are disabled, the compiler warns about it being unused: drivers/tty/serial/omap-serial.c:1168:13: warning: 'wait_for_xmitr' defined but not used [-Wunused-func We could add more #ifdefs to work around it, but adding __maybe_unused seems nicer. Signed-off-by: Arnd Bergmann Fixes: 2172076d2399 ("serial/omap-serial: Deinline wait_for_xmitr, save 165 bytes") Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/omap-serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 27d3b978f16e..fa49eb1e2fa2 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -1165,7 +1165,7 @@ serial_omap_type(struct uart_port *port) #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) -static void wait_for_xmitr(struct uart_omap_port *up) +static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) { unsigned int status, tmout = 10000; -- cgit v1.2.3 From 7dde55787b43a8f2b4021916db38d90c03a2ec64 Mon Sep 17 00:00:00 2001 From: Jeremy McNicoll Date: Tue, 2 Feb 2016 13:00:45 -0800 Subject: tty: Add support for PCIe WCH382 2S multi-IO card WCH382 2S board is a PCIe card with 2 DB9 COM ports detected as Serial controller: Device 1c00:3253 (rev 10) (prog-if 05 [16850]) Signed-off-by: Jeremy McNicoll Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pci.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers') diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index e71ec78fc11e..7cd6f9a90542 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1941,6 +1941,7 @@ pci_wch_ch38x_setup(struct serial_private *priv, #define PCIE_VENDOR_ID_WCH 0x1c00 #define PCIE_DEVICE_ID_WCH_CH382_2S1P 0x3250 #define PCIE_DEVICE_ID_WCH_CH384_4S 0x3470 +#define PCIE_DEVICE_ID_WCH_CH382_2S 0x3253 #define PCI_VENDOR_ID_PERICOM 0x12D8 #define PCI_DEVICE_ID_PERICOM_PI7C9X7951 0x7951 @@ -2637,6 +2638,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subdevice = PCI_ANY_ID, .setup = pci_wch_ch353_setup, }, + /* WCH CH382 2S card (16850 clone) */ + { + .vendor = PCIE_VENDOR_ID_WCH, + .device = PCIE_DEVICE_ID_WCH_CH382_2S, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_wch_ch38x_setup, + }, /* WCH CH382 2S1P card (16850 clone) */ { .vendor = PCIE_VENDOR_ID_WCH, @@ -2955,6 +2964,7 @@ enum pci_board_num_t { pbn_fintek_4, pbn_fintek_8, pbn_fintek_12, + pbn_wch382_2, pbn_wch384_4, pbn_pericom_PI7C9X7951, pbn_pericom_PI7C9X7952, @@ -3775,6 +3785,13 @@ static struct pciserial_board pci_boards[] = { .base_baud = 115200, .first_offset = 0x40, }, + [pbn_wch382_2] = { + .flags = FL_BASE0, + .num_ports = 2, + .base_baud = 115200, + .uart_offset = 8, + .first_offset = 0xC0, + }, [pbn_wch384_4] = { .flags = FL_BASE0, .num_ports = 4, @@ -5574,6 +5591,10 @@ static struct pci_device_id serial_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_b0_bt_2_115200 }, + { PCIE_VENDOR_ID_WCH, PCIE_DEVICE_ID_WCH_CH382_2S, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, pbn_wch382_2 }, + { PCIE_VENDOR_ID_WCH, PCIE_DEVICE_ID_WCH_CH384_4S, PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_wch384_4 }, -- cgit v1.2.3 From 2831c89f42dcde440cfdccb9fee9f42d54bbc1ef Mon Sep 17 00:00:00 2001 From: "Herton R. Krzesinski" Date: Mon, 11 Jan 2016 12:07:43 -0200 Subject: pty: fix possible use after free of tty->driver_data This change fixes a bug for a corner case where we have the the last release from a pty master/slave coming from a previously opened /dev/tty file. When this happens, the tty->driver_data can be stale, due to all ptmx or pts/N files having already been closed before (and thus the inode related to these files, which tty->driver_data points to, being already freed/destroyed). The fix here is to keep a reference on the opened master ptmx inode. We maintain the inode referenced until the final pty_unix98_shutdown, and only pass this inode to devpts_kill_index. Signed-off-by: Herton R. Krzesinski Cc: # 2.6.29+ Reviewed-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/pty.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index b3110040164a..3b5cde833ee5 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -681,7 +681,14 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty) /* this is called once with whichever end is closed last */ static void pty_unix98_shutdown(struct tty_struct *tty) { - devpts_kill_index(tty->driver_data, tty->index); + struct inode *ptmx_inode; + + if (tty->driver->subtype == PTY_TYPE_MASTER) + ptmx_inode = tty->driver_data; + else + ptmx_inode = tty->link->driver_data; + devpts_kill_index(ptmx_inode, tty->index); + iput(ptmx_inode); /* drop reference we acquired at ptmx_open */ } static const struct tty_operations ptm_unix98_ops = { @@ -773,6 +780,15 @@ static int ptmx_open(struct inode *inode, struct file *filp) set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */ tty->driver_data = inode; + /* + * In the case where all references to ptmx inode are dropped and we + * still have /dev/tty opened pointing to the master/slave pair (ptmx + * is closed/released before /dev/tty), we must make sure that the inode + * is still valid when we call the final pty_unix98_shutdown, thus we + * hold an additional reference to the ptmx inode + */ + ihold(inode); + tty_add_file(tty, filp); slave_inode = devpts_pty_new(inode, -- cgit v1.2.3 From 1f55c718c290616889c04946864a13ef30f64929 Mon Sep 17 00:00:00 2001 From: "Herton R. Krzesinski" Date: Thu, 14 Jan 2016 17:56:58 -0200 Subject: pty: make sure super_block is still valid in final /dev/tty close Considering current pty code and multiple devpts instances, it's possible to umount a devpts file system while a program still has /dev/tty opened pointing to a previosuly closed pty pair in that instance. In the case all ptmx and pts/N files are closed, umount can be done. If the program closes /dev/tty after umount is done, devpts_kill_index will use now an invalid super_block, which was already destroyed in the umount operation after running ->kill_sb. This is another "use after free" type of issue, but now related to the allocated super_block instance. To avoid the problem (warning at ida_remove and potential crashes) for this specific case, I added two functions in devpts which grabs additional references to the super_block, which pty code now uses so it makes sure the super block structure is still valid until pty shutdown is done. I also moved the additional inode references to the same functions, which also covered similar case with inode being freed before /dev/tty final close/shutdown. Signed-off-by: Herton R. Krzesinski Cc: stable@vger.kernel.org # 2.6.29+ Reviewed-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/pty.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 3b5cde833ee5..2348fa613707 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -688,7 +688,7 @@ static void pty_unix98_shutdown(struct tty_struct *tty) else ptmx_inode = tty->link->driver_data; devpts_kill_index(ptmx_inode, tty->index); - iput(ptmx_inode); /* drop reference we acquired at ptmx_open */ + devpts_del_ref(ptmx_inode); } static const struct tty_operations ptm_unix98_ops = { @@ -785,9 +785,12 @@ static int ptmx_open(struct inode *inode, struct file *filp) * still have /dev/tty opened pointing to the master/slave pair (ptmx * is closed/released before /dev/tty), we must make sure that the inode * is still valid when we call the final pty_unix98_shutdown, thus we - * hold an additional reference to the ptmx inode + * hold an additional reference to the ptmx inode. For the same /dev/tty + * last close case, we also need to make sure the super_block isn't + * destroyed (devpts instance unmounted), before /dev/tty is closed and + * on its release devpts_kill_index is called. */ - ihold(inode); + devpts_add_ref(inode); tty_add_file(tty, filp); -- cgit v1.2.3 From c8053b58762745d93930826b60a4073854a15ce5 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Sun, 7 Feb 2016 18:22:54 -0800 Subject: Revert "8250: uniphier: allow modular build with 8250 console" This reverts commit d56edd7ed0ed46a8043ee3040ededbd190818ccf, it shouldn't have been applied, it was fixed properly with commit 71f50c6d9a2276f3ec85384bffe2aee1962f4669 ("of: drop symbols declared by _OF_DECLARE() from modules") Reported-by: Masahiro Yamada Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_uniphier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index 1b7bd26555b7..bab6b3ae2540 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -35,7 +35,7 @@ struct uniphier8250_priv { spinlock_t atomic_write_lock; }; -#if defined(CONFIG_SERIAL_8250_CONSOLE) && !defined(MODULE) +#ifdef CONFIG_SERIAL_8250_CONSOLE static int __init uniphier_early_console_setup(struct earlycon_device *device, const char *options) { -- cgit v1.2.3 From 2f9ba5b2f8420e0e5712080dafc773f7dd47c3df Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Mon, 14 Dec 2015 09:42:38 +0000 Subject: nvmem: core: return error for non word aligned access nvmem providers have restrictions on register strides, so return error when users attempt to read/write buffers with sizes which are less than word size. Without this patch the userspace would continue to try as it does not get any error from the nvmem core, resulting in a hang or endless loop in userspace. Reported-by: Ariel D'Alessandro Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/core.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 6fd4e5a5ef4a..9d11d9837312 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -70,6 +70,9 @@ static ssize_t bin_attr_nvmem_read(struct file *filp, struct kobject *kobj, if (pos >= nvmem->size) return 0; + if (count < nvmem->word_size) + return -EINVAL; + if (pos + count > nvmem->size) count = nvmem->size - pos; @@ -95,6 +98,9 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct kobject *kobj, if (pos >= nvmem->size) return 0; + if (count < nvmem->word_size) + return -EINVAL; + if (pos + count > nvmem->size) count = nvmem->size - pos; -- cgit v1.2.3 From 3b2b9ead32142b4cf55ea2793e5e4f7b63c04818 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 14 Dec 2015 09:42:57 +0000 Subject: nvmem: qfprom: Specify LE device endianness The qfprom is a little endian device, but so far we've been relying on the regmap mmio bus handling this for us without explicitly stating that fact. After commit 4a98da2164cf (regmap-mmio: Use native endianness for read/write, 2015-10-29), the regmap mmio bus will read/write with the __raw_*() IO accessors, instead of using the readl/writel() APIs that do proper byte swapping for little endian devices. So if we're running on a big endian processor and haven't specified the endianness explicitly in the regmap config or in DT, we're going to switch from doing little endian byte swapping to big endian accesses without byte swapping, leading to some confusing results. Specify the endianness explicitly so that the regmap core properly byte swaps the accesses for us. Cc: Rajendra Nayak Cc: Kevin Hilman Cc: Tyler Baker Cc: Simon Arlott Cc: Mark Brown Signed-off-by: Stephen Boyd Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/qfprom.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c index afb67e7eeee4..3829e5fbf8c3 100644 --- a/drivers/nvmem/qfprom.c +++ b/drivers/nvmem/qfprom.c @@ -21,6 +21,7 @@ static struct regmap_config qfprom_regmap_config = { .reg_bits = 32, .val_bits = 8, .reg_stride = 1, + .val_format_endian = REGMAP_ENDIAN_LITTLE, }; static struct nvmem_config econfig = { -- cgit v1.2.3 From b00663124c76f69e71d118d778842471e85c6f11 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 6 Feb 2016 02:36:35 +0300 Subject: mmc: mmc_spi: add checks for dma mapping error There is no checks for dma mapping errors in mmc_spi. Tha patch fixes that and by the way it adds dma_unmap_single(ones_dma) that was left on a failure path mmc_spi_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Ulf Hansson --- drivers/mmc/host/mmc_spi.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 1c1b45ef3faf..3446097a43c0 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -925,6 +925,10 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, dma_addr = dma_map_page(dma_dev, sg_page(sg), 0, PAGE_SIZE, dir); + if (dma_mapping_error(dma_dev, dma_addr)) { + data->error = -EFAULT; + break; + } if (direction == DMA_TO_DEVICE) t->tx_dma = dma_addr + sg->offset; else @@ -1393,10 +1397,12 @@ static int mmc_spi_probe(struct spi_device *spi) host->dma_dev = dev; host->ones_dma = dma_map_single(dev, ones, MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE); + if (dma_mapping_error(dev, host->ones_dma)) + goto fail_ones_dma; host->data_dma = dma_map_single(dev, host->data, sizeof(*host->data), DMA_BIDIRECTIONAL); - - /* REVISIT in theory those map operations can fail... */ + if (dma_mapping_error(dev, host->data_dma)) + goto fail_data_dma; dma_sync_single_for_cpu(host->dma_dev, host->data_dma, sizeof(*host->data), @@ -1462,6 +1468,11 @@ fail_glue_init: if (host->dma_dev) dma_unmap_single(host->dma_dev, host->data_dma, sizeof(*host->data), DMA_BIDIRECTIONAL); +fail_data_dma: + if (host->dma_dev) + dma_unmap_single(host->dma_dev, host->ones_dma, + MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE); +fail_ones_dma: kfree(host->data); fail_nobuf1: -- cgit v1.2.3 From 07e7716c746dd4e43211903eac954a18192d3d14 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Mon, 8 Feb 2016 15:17:57 +0100 Subject: mmc: pxamci: fix the device-tree probe deferral path When the gpio driver is probed after the mmc one, the read/write gpio and card detection one return -EPROBE_DEFER. Unfortunately, the memory region remains requested, and upon the next probe, the probe will fail anyway with -EBUSY. Fix this by releasing the memory resource upon probe failure. More broadly, this patch uses devm_*() primitives whenever possible in the probe function. Signed-off-by: Robert Jarzmik Signed-off-by: Ulf Hansson --- drivers/mmc/host/pxamci.c | 35 +++++++++-------------------------- 1 file changed, 9 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 28a057fae0a1..da824772bbb4 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -86,7 +86,7 @@ struct pxamci_host { static inline void pxamci_init_ocr(struct pxamci_host *host) { #ifdef CONFIG_REGULATOR - host->vcc = regulator_get_optional(mmc_dev(host->mmc), "vmmc"); + host->vcc = devm_regulator_get_optional(mmc_dev(host->mmc), "vmmc"); if (IS_ERR(host->vcc)) host->vcc = NULL; @@ -654,12 +654,8 @@ static int pxamci_probe(struct platform_device *pdev) r = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - if (!r || irq < 0) - return -ENXIO; - - r = request_mem_region(r->start, SZ_4K, DRIVER_NAME); - if (!r) - return -EBUSY; + if (irq < 0) + return irq; mmc = mmc_alloc_host(sizeof(struct pxamci_host), &pdev->dev); if (!mmc) { @@ -695,7 +691,7 @@ static int pxamci_probe(struct platform_device *pdev) host->pdata = pdev->dev.platform_data; host->clkrt = CLKRT_OFF; - host->clk = clk_get(&pdev->dev, NULL); + host->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(host->clk)) { ret = PTR_ERR(host->clk); host->clk = NULL; @@ -727,9 +723,9 @@ static int pxamci_probe(struct platform_device *pdev) host->irq = irq; host->imask = MMC_I_MASK_ALL; - host->base = ioremap(r->start, SZ_4K); - if (!host->base) { - ret = -ENOMEM; + host->base = devm_ioremap_resource(&pdev->dev, r); + if (IS_ERR(host->base)) { + ret = PTR_ERR(host->base); goto out; } @@ -742,7 +738,8 @@ static int pxamci_probe(struct platform_device *pdev) writel(64, host->base + MMC_RESTO); writel(host->imask, host->base + MMC_I_MASK); - ret = request_irq(host->irq, pxamci_irq, 0, DRIVER_NAME, host); + ret = devm_request_irq(&pdev->dev, host->irq, pxamci_irq, 0, + DRIVER_NAME, host); if (ret) goto out; @@ -833,14 +830,9 @@ out: dma_release_channel(host->dma_chan_rx); if (host->dma_chan_tx) dma_release_channel(host->dma_chan_tx); - if (host->base) - iounmap(host->base); - if (host->clk) - clk_put(host->clk); } if (mmc) mmc_free_host(mmc); - release_resource(r); return ret; } @@ -859,9 +851,6 @@ static int pxamci_remove(struct platform_device *pdev) gpio_ro = host->pdata->gpio_card_ro; gpio_power = host->pdata->gpio_power; } - if (host->vcc) - regulator_put(host->vcc); - if (host->pdata && host->pdata->exit) host->pdata->exit(&pdev->dev, mmc); @@ -870,16 +859,10 @@ static int pxamci_remove(struct platform_device *pdev) END_CMD_RES|PRG_DONE|DATA_TRAN_DONE, host->base + MMC_I_MASK); - free_irq(host->irq, host); dmaengine_terminate_all(host->dma_chan_rx); dmaengine_terminate_all(host->dma_chan_tx); dma_release_channel(host->dma_chan_rx); dma_release_channel(host->dma_chan_tx); - iounmap(host->base); - - clk_put(host->clk); - - release_resource(host->res); mmc_free_host(mmc); } -- cgit v1.2.3 From cd474ba0d6048aeefe6f1066a6bfb5eac36a2a81 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 10:21:23 -0500 Subject: drm/amdgpu: add pcie cap module parameters (v2) Allows the user to force the supported pcie gen and lane config on both the asic and the chipset. Useful for debugging pcie problems and for virtualization where we may not be able to query the pcie bridge caps. Default to: gen: chipset 1/2, asic 1/2/3 lanes: 1/2/4/8/16 v2: fix bare metal case Reviewed-by: monk liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 147 ++++++++++++++++------------- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 8 ++ 3 files changed, 92 insertions(+), 65 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 82edf95b7740..4021c8a97fc7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -87,6 +87,8 @@ extern int amdgpu_sched_jobs; extern int amdgpu_sched_hw_submission; extern int amdgpu_enable_semaphores; extern int amdgpu_powerplay; +extern unsigned amdgpu_pcie_gen_cap; +extern unsigned amdgpu_pcie_lane_cap; #define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000 #define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */ diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 65531463f88e..85991cee62e6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1933,80 +1933,97 @@ retry: return r; } +#define AMDGPU_DEFAULT_PCIE_GEN_MASK 0x30007 /* gen: chipset 1/2, asic 1/2/3 */ +#define AMDGPU_DEFAULT_PCIE_MLW_MASK 0x2f0000 /* 1/2/4/8/16 lanes */ + void amdgpu_get_pcie_info(struct amdgpu_device *adev) { u32 mask; int ret; - if (pci_is_root_bus(adev->pdev->bus)) - return; + if (amdgpu_pcie_gen_cap) + adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap; - if (amdgpu_pcie_gen2 == 0) - return; + if (amdgpu_pcie_lane_cap) + adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap; - if (adev->flags & AMD_IS_APU) + /* covers APUs as well */ + if (pci_is_root_bus(adev->pdev->bus)) { + if (adev->pm.pcie_gen_mask == 0) + adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK; + if (adev->pm.pcie_mlw_mask == 0) + adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK; return; + } - ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask); - if (!ret) { - adev->pm.pcie_gen_mask = (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | - CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | - CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3); - - if (mask & DRM_PCIE_SPEED_25) - adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1; - if (mask & DRM_PCIE_SPEED_50) - adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2; - if (mask & DRM_PCIE_SPEED_80) - adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3; - } - ret = drm_pcie_get_max_link_width(adev->ddev, &mask); - if (!ret) { - switch (mask) { - case 32: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 16: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 12: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 8: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 4: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 2: - adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | - CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); - break; - case 1: - adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1; - break; - default: - break; + if (adev->pm.pcie_gen_mask == 0) { + ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask); + if (!ret) { + adev->pm.pcie_gen_mask = (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3); + + if (mask & DRM_PCIE_SPEED_25) + adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1; + if (mask & DRM_PCIE_SPEED_50) + adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2; + if (mask & DRM_PCIE_SPEED_80) + adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3; + } else { + adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK; + } + } + if (adev->pm.pcie_mlw_mask == 0) { + ret = drm_pcie_get_max_link_width(adev->ddev, &mask); + if (!ret) { + switch (mask) { + case 32: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 16: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 12: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 8: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 4: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 2: + adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case 1: + adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1; + break; + default: + break; + } + } else { + adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK; } } } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 9c1af8976bef..9ef1db87cf26 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -83,6 +83,8 @@ int amdgpu_sched_jobs = 32; int amdgpu_sched_hw_submission = 2; int amdgpu_enable_semaphores = 0; int amdgpu_powerplay = -1; +unsigned amdgpu_pcie_gen_cap = 0; +unsigned amdgpu_pcie_lane_cap = 0; MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes"); module_param_named(vramlimit, amdgpu_vram_limit, int, 0600); @@ -170,6 +172,12 @@ MODULE_PARM_DESC(powerplay, "Powerplay component (1 = enable, 0 = disable, -1 = module_param_named(powerplay, amdgpu_powerplay, int, 0444); #endif +MODULE_PARM_DESC(pcie_gen_cap, "PCIE Gen Caps (0: autodetect (default))"); +module_param_named(pcie_gen_cap, amdgpu_pcie_gen_cap, uint, 0444); + +MODULE_PARM_DESC(pcie_lane_cap, "PCIE Lane Caps (0: autodetect (default))"); +module_param_named(pcie_lane_cap, amdgpu_pcie_lane_cap, uint, 0444); + static struct pci_device_id pciidlist[] = { #ifdef CONFIG_DRM_AMDGPU_CIK /* Kaveri */ -- cgit v1.2.3 From 76ecb2c75bc772050f2e0462b9cf0163cc43046e Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 10:33:59 -0500 Subject: drm/amdgpu/cik: don't mess with aspm if gpu is root bus Pcie registers may not be available in a virtualized environment. Reviewed-by: monk liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/cik.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index fd9c9588ef46..5c978e064f47 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -1762,6 +1762,9 @@ static void cik_program_aspm(struct amdgpu_device *adev) if (amdgpu_aspm == 0) return; + if (pci_is_root_bus(adev->pdev->bus)) + return; + /* XXX double check APUs */ if (adev->flags & AMD_IS_APU) return; -- cgit v1.2.3 From 50171ebecf87521056db2b3d5654c4348f32c9bd Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 10:44:04 -0500 Subject: drm/amdgpu/dpm/ci: switch over to the common pcie caps interface We already query this at driver init, so use that info. Also handles virtualization cases. Reviewed-by: monk liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/ci_dpm.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c index 8b4731d4e10e..474ca02b0949 100644 --- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c @@ -31,6 +31,7 @@ #include "ci_dpm.h" #include "gfx_v7_0.h" #include "atom.h" +#include "amd_pcie.h" #include #include "smu/smu_7_0_1_d.h" @@ -5835,18 +5836,16 @@ static int ci_dpm_init(struct amdgpu_device *adev) u8 frev, crev; struct ci_power_info *pi; int ret; - u32 mask; pi = kzalloc(sizeof(struct ci_power_info), GFP_KERNEL); if (pi == NULL) return -ENOMEM; adev->pm.dpm.priv = pi; - ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask); - if (ret) - pi->sys_pcie_mask = 0; - else - pi->sys_pcie_mask = mask; + pi->sys_pcie_mask = + (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_MASK) >> + CAIL_PCIE_LINK_SPEED_SUPPORT_SHIFT; + pi->force_pcie_gen = AMDGPU_PCIE_GEN_INVALID; pi->pcie_gen_performance.max = AMDGPU_PCIE_GEN1; -- cgit v1.2.3 From b6df77fc5c42041a11ff094e5595d1e7379c917f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:26:56 -0500 Subject: drm/amdgpu: handle uvd pg flags properly Don't attempt to start/stop the uvd block if pg is disabled. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c | 3 +++ drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 3 +++ 3 files changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c index 5e9f73af83a8..9cb528740473 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c @@ -848,7 +848,10 @@ static int uvd_v4_2_set_powergating_state(void *handle, * revisit this when there is a cleaner line between * the smc and the hw blocks */ - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + return 0; if (state == AMD_PG_STATE_GATE) { uvd_v4_2_stop(adev); diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c index 38864f562981..b4623deac8ef 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c @@ -789,6 +789,9 @@ static int uvd_v5_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + return 0; + if (state == AMD_PG_STATE_GATE) { uvd_v5_0_stop(adev); return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c index 3d5913926436..c41eda78f0b7 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c @@ -1030,6 +1030,9 @@ static int uvd_v6_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + return 0; + if (state == AMD_PG_STATE_GATE) { uvd_v6_0_stop(adev); return 0; -- cgit v1.2.3 From 808a934fd47c1c4a1670069cbe2fae7c23068b14 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:29:45 -0500 Subject: drm/amdgpu: handle vce pg flags properly Don't attempt to start/stop the vce block if pg is disabled. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/vce_v2_0.c | 3 +++ drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 3 +++ 2 files changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c index 52ac7a8f1e58..d3ce6085ccd2 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c @@ -608,6 +608,9 @@ static int vce_v2_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_VCE)) + return 0; + if (state == AMD_PG_STATE_GATE) /* XXX do we need a vce_v2_0_stop()? */ return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c index e99af81e4aec..797d12c31475 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c @@ -728,6 +728,9 @@ static int vce_v3_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_VCE)) + return 0; + if (state == AMD_PG_STATE_GATE) /* XXX do we need a vce_v3_0_stop()? */ return 0; -- cgit v1.2.3 From 0fd4af9e328c0f694d21a646232a7a62da7ec4ae Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:31:32 -0500 Subject: drm/amdgpu: clean up vce pg flags for cz/st It was already disabled elsewhere, make it offical. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/vi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 89f5a1ff6f43..0d14d108a6c4 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -1457,8 +1457,7 @@ static int vi_common_early_init(void *handle) case CHIP_STONEY: adev->has_uvd = true; adev->cg_flags = 0; - /* Disable UVD pg */ - adev->pg_flags = /* AMDGPU_PG_SUPPORT_UVD | */AMDGPU_PG_SUPPORT_VCE; + adev->pg_flags = 0; adev->external_rev_id = adev->rev_id + 0x1; break; default: -- cgit v1.2.3 From 35e5912d0801184b57119383da003263a21eeed1 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:33:56 -0500 Subject: drm/amdgpu: be consistent with uvd cg flags Don't do anything if the uvd cg flags are not set. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c | 3 +++ drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c | 5 +++++ 2 files changed, 8 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c index 9cb528740473..c982524d9287 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c @@ -830,6 +830,9 @@ static int uvd_v4_2_set_clockgating_state(void *handle, bool gate = false; struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) + return 0; + if (state == AMD_CG_STATE_GATE) gate = true; diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c index b4623deac8ef..aad1ab596bdc 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c @@ -774,6 +774,11 @@ static int uvd_v5_0_process_interrupt(struct amdgpu_device *adev, static int uvd_v5_0_set_clockgating_state(void *handle, enum amd_clockgating_state state) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) + return 0; + return 0; } -- cgit v1.2.3 From d4fdc08e251316e2e0710d02e65b4576ce7963d2 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:40:32 -0500 Subject: drm/amd/powerplay/cz: disable uvd pg Not working reliably yet. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c index 0874ab42ee95..8fc9e01a7e50 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c @@ -247,6 +247,8 @@ static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr) phm_cap_set(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableVoltageIsland); + phm_cap_unset(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_UVDPowerGating); return 0; } -- cgit v1.2.3 From 67a0a0fd11524bd9943635168f8380b9906fb389 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:42:24 -0500 Subject: drm/amd/powerplay/cz: disable vce pg Not working reliably yet. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c index 8fc9e01a7e50..80af87fa0bf0 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c @@ -249,6 +249,9 @@ static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr) phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_UVDPowerGating); + phm_cap_unset(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_VCEPowerGating); + return 0; } -- cgit v1.2.3 From 3d5afb41f82f55e6912678ea24d637b84c160d65 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:47:38 -0500 Subject: drm/amd/powerplay/tonga: disable uvd pg Not working reliably yet. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c index 44a925006479..7518caae7bed 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c @@ -4615,6 +4615,9 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr) data->vddc_phase_shed_control = 0; + phm_cap_unset(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_UVDPowerGating); + if (0 == result) { struct cgs_system_info sys_info = {0}; -- cgit v1.2.3 From f997e6f21308f0627c46caed0315ee005ef4775a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 4 Feb 2016 23:48:51 -0500 Subject: drm/amd/powerplay/tonga: disable vce pg Not working reliably yet. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c index 7518caae7bed..69c81c14d89c 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c @@ -4617,6 +4617,8 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr) phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_UVDPowerGating); + phm_cap_unset(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_VCEPowerGating); if (0 == result) { struct cgs_system_info sys_info = {0}; -- cgit v1.2.3 From 08d334087617ed9662d40db776c5d2c0a614315a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 5 Feb 2016 10:34:28 -0500 Subject: drm/amdgpu: add a cgs interface to fetch cg and pg flags Needed to pass the cg and pg info to powerplay. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 6 ++++++ drivers/gpu/drm/amd/include/cgs_common.h | 2 ++ 2 files changed, 8 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c index a081dda9fa2f..7a4b101e10c6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c @@ -795,6 +795,12 @@ static int amdgpu_cgs_query_system_info(void *cgs_device, case CGS_SYSTEM_INFO_PCIE_MLW: sys_info->value = adev->pm.pcie_mlw_mask; break; + case CGS_SYSTEM_INFO_CG_FLAGS: + sys_info->value = adev->cg_flags; + break; + case CGS_SYSTEM_INFO_PG_FLAGS: + sys_info->value = adev->pg_flags; + break; default: return -ENODEV; } diff --git a/drivers/gpu/drm/amd/include/cgs_common.h b/drivers/gpu/drm/amd/include/cgs_common.h index 713aec954692..aec38fc3834f 100644 --- a/drivers/gpu/drm/amd/include/cgs_common.h +++ b/drivers/gpu/drm/amd/include/cgs_common.h @@ -109,6 +109,8 @@ enum cgs_system_info_id { CGS_SYSTEM_INFO_ADAPTER_BDF_ID = 1, CGS_SYSTEM_INFO_PCIE_GEN_INFO, CGS_SYSTEM_INFO_PCIE_MLW, + CGS_SYSTEM_INFO_CG_FLAGS, + CGS_SYSTEM_INFO_PG_FLAGS, CGS_SYSTEM_INFO_ID_MAXIMUM, }; -- cgit v1.2.3 From b118af7012f9bd4bdbda12681ce66f91aabffd3f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 5 Feb 2016 10:37:29 -0500 Subject: drm/amdgpu: remove unused cg defines Leftover from radeon. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 4021c8a97fc7..73a72eee4dc3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -134,15 +134,6 @@ extern unsigned amdgpu_pcie_lane_cap; #define AMDGPU_RESET_VCE (1 << 13) #define AMDGPU_RESET_VCE1 (1 << 14) -/* CG block flags */ -#define AMDGPU_CG_BLOCK_GFX (1 << 0) -#define AMDGPU_CG_BLOCK_MC (1 << 1) -#define AMDGPU_CG_BLOCK_SDMA (1 << 2) -#define AMDGPU_CG_BLOCK_UVD (1 << 3) -#define AMDGPU_CG_BLOCK_VCE (1 << 4) -#define AMDGPU_CG_BLOCK_HDP (1 << 5) -#define AMDGPU_CG_BLOCK_BIF (1 << 6) - /* CG flags */ #define AMDGPU_CG_SUPPORT_GFX_MGCG (1 << 0) #define AMDGPU_CG_SUPPORT_GFX_MGLS (1 << 1) -- cgit v1.2.3 From e3b04bc790ecd6d08d4699bc60b4f5a76f7f7b6b Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 5 Feb 2016 10:56:22 -0500 Subject: drma/dmgpu: move cg and pg flags into shared headers So they can be used by powerplay. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 32 ------- drivers/gpu/drm/amd/amdgpu/cik.c | 154 +++++++++++++++---------------- drivers/gpu/drm/amd/amdgpu/cik_sdma.c | 4 +- drivers/gpu/drm/amd/amdgpu/cz_dpm.c | 6 +- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 70 +++++++------- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 10 +- drivers/gpu/drm/amd/amdgpu/kv_dpm.c | 8 +- drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c | 6 +- drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c | 4 +- drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 6 +- drivers/gpu/drm/amd/amdgpu/vce_v2_0.c | 4 +- drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 6 +- drivers/gpu/drm/amd/include/amd_shared.h | 32 +++++++ 13 files changed, 171 insertions(+), 171 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 73a72eee4dc3..6808facaf6af 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -134,38 +134,6 @@ extern unsigned amdgpu_pcie_lane_cap; #define AMDGPU_RESET_VCE (1 << 13) #define AMDGPU_RESET_VCE1 (1 << 14) -/* CG flags */ -#define AMDGPU_CG_SUPPORT_GFX_MGCG (1 << 0) -#define AMDGPU_CG_SUPPORT_GFX_MGLS (1 << 1) -#define AMDGPU_CG_SUPPORT_GFX_CGCG (1 << 2) -#define AMDGPU_CG_SUPPORT_GFX_CGLS (1 << 3) -#define AMDGPU_CG_SUPPORT_GFX_CGTS (1 << 4) -#define AMDGPU_CG_SUPPORT_GFX_CGTS_LS (1 << 5) -#define AMDGPU_CG_SUPPORT_GFX_CP_LS (1 << 6) -#define AMDGPU_CG_SUPPORT_GFX_RLC_LS (1 << 7) -#define AMDGPU_CG_SUPPORT_MC_LS (1 << 8) -#define AMDGPU_CG_SUPPORT_MC_MGCG (1 << 9) -#define AMDGPU_CG_SUPPORT_SDMA_LS (1 << 10) -#define AMDGPU_CG_SUPPORT_SDMA_MGCG (1 << 11) -#define AMDGPU_CG_SUPPORT_BIF_LS (1 << 12) -#define AMDGPU_CG_SUPPORT_UVD_MGCG (1 << 13) -#define AMDGPU_CG_SUPPORT_VCE_MGCG (1 << 14) -#define AMDGPU_CG_SUPPORT_HDP_LS (1 << 15) -#define AMDGPU_CG_SUPPORT_HDP_MGCG (1 << 16) - -/* PG flags */ -#define AMDGPU_PG_SUPPORT_GFX_PG (1 << 0) -#define AMDGPU_PG_SUPPORT_GFX_SMG (1 << 1) -#define AMDGPU_PG_SUPPORT_GFX_DMG (1 << 2) -#define AMDGPU_PG_SUPPORT_UVD (1 << 3) -#define AMDGPU_PG_SUPPORT_VCE (1 << 4) -#define AMDGPU_PG_SUPPORT_CP (1 << 5) -#define AMDGPU_PG_SUPPORT_GDS (1 << 6) -#define AMDGPU_PG_SUPPORT_RLC_SMU_HS (1 << 7) -#define AMDGPU_PG_SUPPORT_SDMA (1 << 8) -#define AMDGPU_PG_SUPPORT_ACP (1 << 9) -#define AMDGPU_PG_SUPPORT_SAMU (1 << 10) - /* GFX current status */ #define AMDGPU_GFX_NORMAL_MODE 0x00000000L #define AMDGPU_GFX_SAFE_MODE 0x00000001L diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index 5c978e064f47..155965ed14a3 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -2335,72 +2335,72 @@ static int cik_common_early_init(void *handle) switch (adev->asic_type) { case CHIP_BONAIRE: adev->cg_flags = - AMDGPU_CG_SUPPORT_GFX_MGCG | - AMDGPU_CG_SUPPORT_GFX_MGLS | - /*AMDGPU_CG_SUPPORT_GFX_CGCG |*/ - AMDGPU_CG_SUPPORT_GFX_CGLS | - AMDGPU_CG_SUPPORT_GFX_CGTS | - AMDGPU_CG_SUPPORT_GFX_CGTS_LS | - AMDGPU_CG_SUPPORT_GFX_CP_LS | - AMDGPU_CG_SUPPORT_MC_LS | - AMDGPU_CG_SUPPORT_MC_MGCG | - AMDGPU_CG_SUPPORT_SDMA_MGCG | - AMDGPU_CG_SUPPORT_SDMA_LS | - AMDGPU_CG_SUPPORT_BIF_LS | - AMDGPU_CG_SUPPORT_VCE_MGCG | - AMDGPU_CG_SUPPORT_UVD_MGCG | - AMDGPU_CG_SUPPORT_HDP_LS | - AMDGPU_CG_SUPPORT_HDP_MGCG; + AMD_CG_SUPPORT_GFX_MGCG | + AMD_CG_SUPPORT_GFX_MGLS | + /*AMD_CG_SUPPORT_GFX_CGCG |*/ + AMD_CG_SUPPORT_GFX_CGLS | + AMD_CG_SUPPORT_GFX_CGTS | + AMD_CG_SUPPORT_GFX_CGTS_LS | + AMD_CG_SUPPORT_GFX_CP_LS | + AMD_CG_SUPPORT_MC_LS | + AMD_CG_SUPPORT_MC_MGCG | + AMD_CG_SUPPORT_SDMA_MGCG | + AMD_CG_SUPPORT_SDMA_LS | + AMD_CG_SUPPORT_BIF_LS | + AMD_CG_SUPPORT_VCE_MGCG | + AMD_CG_SUPPORT_UVD_MGCG | + AMD_CG_SUPPORT_HDP_LS | + AMD_CG_SUPPORT_HDP_MGCG; adev->pg_flags = 0; adev->external_rev_id = adev->rev_id + 0x14; break; case CHIP_HAWAII: adev->cg_flags = - AMDGPU_CG_SUPPORT_GFX_MGCG | - AMDGPU_CG_SUPPORT_GFX_MGLS | - /*AMDGPU_CG_SUPPORT_GFX_CGCG |*/ - AMDGPU_CG_SUPPORT_GFX_CGLS | - AMDGPU_CG_SUPPORT_GFX_CGTS | - AMDGPU_CG_SUPPORT_GFX_CP_LS | - AMDGPU_CG_SUPPORT_MC_LS | - AMDGPU_CG_SUPPORT_MC_MGCG | - AMDGPU_CG_SUPPORT_SDMA_MGCG | - AMDGPU_CG_SUPPORT_SDMA_LS | - AMDGPU_CG_SUPPORT_BIF_LS | - AMDGPU_CG_SUPPORT_VCE_MGCG | - AMDGPU_CG_SUPPORT_UVD_MGCG | - AMDGPU_CG_SUPPORT_HDP_LS | - AMDGPU_CG_SUPPORT_HDP_MGCG; + AMD_CG_SUPPORT_GFX_MGCG | + AMD_CG_SUPPORT_GFX_MGLS | + /*AMD_CG_SUPPORT_GFX_CGCG |*/ + AMD_CG_SUPPORT_GFX_CGLS | + AMD_CG_SUPPORT_GFX_CGTS | + AMD_CG_SUPPORT_GFX_CP_LS | + AMD_CG_SUPPORT_MC_LS | + AMD_CG_SUPPORT_MC_MGCG | + AMD_CG_SUPPORT_SDMA_MGCG | + AMD_CG_SUPPORT_SDMA_LS | + AMD_CG_SUPPORT_BIF_LS | + AMD_CG_SUPPORT_VCE_MGCG | + AMD_CG_SUPPORT_UVD_MGCG | + AMD_CG_SUPPORT_HDP_LS | + AMD_CG_SUPPORT_HDP_MGCG; adev->pg_flags = 0; adev->external_rev_id = 0x28; break; case CHIP_KAVERI: adev->cg_flags = - AMDGPU_CG_SUPPORT_GFX_MGCG | - AMDGPU_CG_SUPPORT_GFX_MGLS | - /*AMDGPU_CG_SUPPORT_GFX_CGCG |*/ - AMDGPU_CG_SUPPORT_GFX_CGLS | - AMDGPU_CG_SUPPORT_GFX_CGTS | - AMDGPU_CG_SUPPORT_GFX_CGTS_LS | - AMDGPU_CG_SUPPORT_GFX_CP_LS | - AMDGPU_CG_SUPPORT_SDMA_MGCG | - AMDGPU_CG_SUPPORT_SDMA_LS | - AMDGPU_CG_SUPPORT_BIF_LS | - AMDGPU_CG_SUPPORT_VCE_MGCG | - AMDGPU_CG_SUPPORT_UVD_MGCG | - AMDGPU_CG_SUPPORT_HDP_LS | - AMDGPU_CG_SUPPORT_HDP_MGCG; + AMD_CG_SUPPORT_GFX_MGCG | + AMD_CG_SUPPORT_GFX_MGLS | + /*AMD_CG_SUPPORT_GFX_CGCG |*/ + AMD_CG_SUPPORT_GFX_CGLS | + AMD_CG_SUPPORT_GFX_CGTS | + AMD_CG_SUPPORT_GFX_CGTS_LS | + AMD_CG_SUPPORT_GFX_CP_LS | + AMD_CG_SUPPORT_SDMA_MGCG | + AMD_CG_SUPPORT_SDMA_LS | + AMD_CG_SUPPORT_BIF_LS | + AMD_CG_SUPPORT_VCE_MGCG | + AMD_CG_SUPPORT_UVD_MGCG | + AMD_CG_SUPPORT_HDP_LS | + AMD_CG_SUPPORT_HDP_MGCG; adev->pg_flags = - /*AMDGPU_PG_SUPPORT_GFX_PG | - AMDGPU_PG_SUPPORT_GFX_SMG | - AMDGPU_PG_SUPPORT_GFX_DMG |*/ - AMDGPU_PG_SUPPORT_UVD | - /*AMDGPU_PG_SUPPORT_VCE | - AMDGPU_PG_SUPPORT_CP | - AMDGPU_PG_SUPPORT_GDS | - AMDGPU_PG_SUPPORT_RLC_SMU_HS | - AMDGPU_PG_SUPPORT_ACP | - AMDGPU_PG_SUPPORT_SAMU |*/ + /*AMD_PG_SUPPORT_GFX_PG | + AMD_PG_SUPPORT_GFX_SMG | + AMD_PG_SUPPORT_GFX_DMG |*/ + AMD_PG_SUPPORT_UVD | + /*AMD_PG_SUPPORT_VCE | + AMD_PG_SUPPORT_CP | + AMD_PG_SUPPORT_GDS | + AMD_PG_SUPPORT_RLC_SMU_HS | + AMD_PG_SUPPORT_ACP | + AMD_PG_SUPPORT_SAMU |*/ 0; if (adev->pdev->device == 0x1312 || adev->pdev->device == 0x1316 || @@ -2412,29 +2412,29 @@ static int cik_common_early_init(void *handle) case CHIP_KABINI: case CHIP_MULLINS: adev->cg_flags = - AMDGPU_CG_SUPPORT_GFX_MGCG | - AMDGPU_CG_SUPPORT_GFX_MGLS | - /*AMDGPU_CG_SUPPORT_GFX_CGCG |*/ - AMDGPU_CG_SUPPORT_GFX_CGLS | - AMDGPU_CG_SUPPORT_GFX_CGTS | - AMDGPU_CG_SUPPORT_GFX_CGTS_LS | - AMDGPU_CG_SUPPORT_GFX_CP_LS | - AMDGPU_CG_SUPPORT_SDMA_MGCG | - AMDGPU_CG_SUPPORT_SDMA_LS | - AMDGPU_CG_SUPPORT_BIF_LS | - AMDGPU_CG_SUPPORT_VCE_MGCG | - AMDGPU_CG_SUPPORT_UVD_MGCG | - AMDGPU_CG_SUPPORT_HDP_LS | - AMDGPU_CG_SUPPORT_HDP_MGCG; + AMD_CG_SUPPORT_GFX_MGCG | + AMD_CG_SUPPORT_GFX_MGLS | + /*AMD_CG_SUPPORT_GFX_CGCG |*/ + AMD_CG_SUPPORT_GFX_CGLS | + AMD_CG_SUPPORT_GFX_CGTS | + AMD_CG_SUPPORT_GFX_CGTS_LS | + AMD_CG_SUPPORT_GFX_CP_LS | + AMD_CG_SUPPORT_SDMA_MGCG | + AMD_CG_SUPPORT_SDMA_LS | + AMD_CG_SUPPORT_BIF_LS | + AMD_CG_SUPPORT_VCE_MGCG | + AMD_CG_SUPPORT_UVD_MGCG | + AMD_CG_SUPPORT_HDP_LS | + AMD_CG_SUPPORT_HDP_MGCG; adev->pg_flags = - /*AMDGPU_PG_SUPPORT_GFX_PG | - AMDGPU_PG_SUPPORT_GFX_SMG | */ - AMDGPU_PG_SUPPORT_UVD | - /*AMDGPU_PG_SUPPORT_VCE | - AMDGPU_PG_SUPPORT_CP | - AMDGPU_PG_SUPPORT_GDS | - AMDGPU_PG_SUPPORT_RLC_SMU_HS | - AMDGPU_PG_SUPPORT_SAMU |*/ + /*AMD_PG_SUPPORT_GFX_PG | + AMD_PG_SUPPORT_GFX_SMG | */ + AMD_PG_SUPPORT_UVD | + /*AMD_PG_SUPPORT_VCE | + AMD_PG_SUPPORT_CP | + AMD_PG_SUPPORT_GDS | + AMD_PG_SUPPORT_RLC_SMU_HS | + AMD_PG_SUPPORT_SAMU |*/ 0; if (adev->asic_type == CHIP_KABINI) { if (adev->rev_id == 0) diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c index 5f712ceddf08..c55ecf0ea845 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c @@ -885,7 +885,7 @@ static void cik_enable_sdma_mgcg(struct amdgpu_device *adev, { u32 orig, data; - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_SDMA_MGCG)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) { WREG32(mmSDMA0_CLK_CTRL + SDMA0_REGISTER_OFFSET, 0x00000100); WREG32(mmSDMA0_CLK_CTRL + SDMA1_REGISTER_OFFSET, 0x00000100); } else { @@ -906,7 +906,7 @@ static void cik_enable_sdma_mgls(struct amdgpu_device *adev, { u32 orig, data; - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_SDMA_LS)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_LS)) { orig = data = RREG32(mmSDMA0_POWER_CNTL + SDMA0_REGISTER_OFFSET); data |= 0x100; if (orig != data) diff --git a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c index 4dd17f2dd905..9056355309d1 100644 --- a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c @@ -445,13 +445,13 @@ static int cz_dpm_init(struct amdgpu_device *adev) pi->gfx_pg_threshold = 500; pi->caps_fps = true; /* uvd */ - pi->caps_uvd_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_UVD) ? true : false; + pi->caps_uvd_pg = (adev->pg_flags & AMD_PG_SUPPORT_UVD) ? true : false; pi->caps_uvd_dpm = true; /* vce */ - pi->caps_vce_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_VCE) ? true : false; + pi->caps_vce_pg = (adev->pg_flags & AMD_PG_SUPPORT_VCE) ? true : false; pi->caps_vce_dpm = true; /* acp */ - pi->caps_acp_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_ACP) ? true : false; + pi->caps_acp_pg = (adev->pg_flags & AMD_PG_SUPPORT_ACP) ? true : false; pi->caps_acp_dpm = true; pi->caps_stable_power_state = false; diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index 6c76139de1c9..7732059ae30f 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -4109,7 +4109,7 @@ static void gfx_v7_0_enable_cgcg(struct amdgpu_device *adev, bool enable) orig = data = RREG32(mmRLC_CGCG_CGLS_CTRL); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_CGCG)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_GFX_CGCG)) { gfx_v7_0_enable_gui_idle_interrupt(adev, true); tmp = gfx_v7_0_halt_rlc(adev); @@ -4147,9 +4147,9 @@ static void gfx_v7_0_enable_mgcg(struct amdgpu_device *adev, bool enable) { u32 data, orig, tmp = 0; - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_MGCG)) { - if (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_MGLS) { - if (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_CP_LS) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_GFX_MGCG)) { + if (adev->cg_flags & AMD_CG_SUPPORT_GFX_MGLS) { + if (adev->cg_flags & AMD_CG_SUPPORT_GFX_CP_LS) { orig = data = RREG32(mmCP_MEM_SLP_CNTL); data |= CP_MEM_SLP_CNTL__CP_MEM_LS_EN_MASK; if (orig != data) @@ -4176,14 +4176,14 @@ static void gfx_v7_0_enable_mgcg(struct amdgpu_device *adev, bool enable) gfx_v7_0_update_rlc(adev, tmp); - if (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_CGTS) { + if (adev->cg_flags & AMD_CG_SUPPORT_GFX_CGTS) { orig = data = RREG32(mmCGTS_SM_CTRL_REG); data &= ~CGTS_SM_CTRL_REG__SM_MODE_MASK; data |= (0x2 << CGTS_SM_CTRL_REG__SM_MODE__SHIFT); data |= CGTS_SM_CTRL_REG__SM_MODE_ENABLE_MASK; data &= ~CGTS_SM_CTRL_REG__OVERRIDE_MASK; - if ((adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_MGLS) && - (adev->cg_flags & AMDGPU_CG_SUPPORT_GFX_CGTS_LS)) + if ((adev->cg_flags & AMD_CG_SUPPORT_GFX_MGLS) && + (adev->cg_flags & AMD_CG_SUPPORT_GFX_CGTS_LS)) data &= ~CGTS_SM_CTRL_REG__LS_OVERRIDE_MASK; data &= ~CGTS_SM_CTRL_REG__ON_MONITOR_ADD_MASK; data |= CGTS_SM_CTRL_REG__ON_MONITOR_ADD_EN_MASK; @@ -4249,7 +4249,7 @@ static void gfx_v7_0_enable_sclk_slowdown_on_pu(struct amdgpu_device *adev, u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_RLC_SMU_HS)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS)) data |= RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PU_ENABLE_MASK; else data &= ~RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PU_ENABLE_MASK; @@ -4263,7 +4263,7 @@ static void gfx_v7_0_enable_sclk_slowdown_on_pd(struct amdgpu_device *adev, u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_RLC_SMU_HS)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS)) data |= RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK; else data &= ~RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK; @@ -4276,7 +4276,7 @@ static void gfx_v7_0_enable_cp_pg(struct amdgpu_device *adev, bool enable) u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_CP)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_CP)) data &= ~0x8000; else data |= 0x8000; @@ -4289,7 +4289,7 @@ static void gfx_v7_0_enable_gds_pg(struct amdgpu_device *adev, bool enable) u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_GDS)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GDS)) data &= ~0x2000; else data |= 0x2000; @@ -4370,7 +4370,7 @@ static void gfx_v7_0_enable_gfx_cgpg(struct amdgpu_device *adev, { u32 data, orig; - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_PG)) { + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG)) { orig = data = RREG32(mmRLC_PG_CNTL); data |= RLC_PG_CNTL__GFX_POWER_GATING_ENABLE_MASK; if (orig != data) @@ -4442,7 +4442,7 @@ static void gfx_v7_0_enable_gfx_static_mgpg(struct amdgpu_device *adev, u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_SMG)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GFX_SMG)) data |= RLC_PG_CNTL__STATIC_PER_CU_PG_ENABLE_MASK; else data &= ~RLC_PG_CNTL__STATIC_PER_CU_PG_ENABLE_MASK; @@ -4456,7 +4456,7 @@ static void gfx_v7_0_enable_gfx_dynamic_mgpg(struct amdgpu_device *adev, u32 data, orig; orig = data = RREG32(mmRLC_PG_CNTL); - if (enable && (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_DMG)) + if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GFX_DMG)) data |= RLC_PG_CNTL__DYN_PER_CU_PG_ENABLE_MASK; else data &= ~RLC_PG_CNTL__DYN_PER_CU_PG_ENABLE_MASK; @@ -4623,15 +4623,15 @@ static void gfx_v7_0_get_csb_buffer(struct amdgpu_device *adev, static void gfx_v7_0_init_pg(struct amdgpu_device *adev) { - if (adev->pg_flags & (AMDGPU_PG_SUPPORT_GFX_PG | - AMDGPU_PG_SUPPORT_GFX_SMG | - AMDGPU_PG_SUPPORT_GFX_DMG | - AMDGPU_PG_SUPPORT_CP | - AMDGPU_PG_SUPPORT_GDS | - AMDGPU_PG_SUPPORT_RLC_SMU_HS)) { + if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG | + AMD_PG_SUPPORT_GFX_SMG | + AMD_PG_SUPPORT_GFX_DMG | + AMD_PG_SUPPORT_CP | + AMD_PG_SUPPORT_GDS | + AMD_PG_SUPPORT_RLC_SMU_HS)) { gfx_v7_0_enable_sclk_slowdown_on_pu(adev, true); gfx_v7_0_enable_sclk_slowdown_on_pd(adev, true); - if (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_PG) { + if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) { gfx_v7_0_init_gfx_cgpg(adev); gfx_v7_0_enable_cp_pg(adev, true); gfx_v7_0_enable_gds_pg(adev, true); @@ -4643,14 +4643,14 @@ static void gfx_v7_0_init_pg(struct amdgpu_device *adev) static void gfx_v7_0_fini_pg(struct amdgpu_device *adev) { - if (adev->pg_flags & (AMDGPU_PG_SUPPORT_GFX_PG | - AMDGPU_PG_SUPPORT_GFX_SMG | - AMDGPU_PG_SUPPORT_GFX_DMG | - AMDGPU_PG_SUPPORT_CP | - AMDGPU_PG_SUPPORT_GDS | - AMDGPU_PG_SUPPORT_RLC_SMU_HS)) { + if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG | + AMD_PG_SUPPORT_GFX_SMG | + AMD_PG_SUPPORT_GFX_DMG | + AMD_PG_SUPPORT_CP | + AMD_PG_SUPPORT_GDS | + AMD_PG_SUPPORT_RLC_SMU_HS)) { gfx_v7_0_update_gfx_pg(adev, false); - if (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_PG) { + if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) { gfx_v7_0_enable_cp_pg(adev, false); gfx_v7_0_enable_gds_pg(adev, false); } @@ -5527,14 +5527,14 @@ static int gfx_v7_0_set_powergating_state(void *handle, if (state == AMD_PG_STATE_GATE) gate = true; - if (adev->pg_flags & (AMDGPU_PG_SUPPORT_GFX_PG | - AMDGPU_PG_SUPPORT_GFX_SMG | - AMDGPU_PG_SUPPORT_GFX_DMG | - AMDGPU_PG_SUPPORT_CP | - AMDGPU_PG_SUPPORT_GDS | - AMDGPU_PG_SUPPORT_RLC_SMU_HS)) { + if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG | + AMD_PG_SUPPORT_GFX_SMG | + AMD_PG_SUPPORT_GFX_DMG | + AMD_PG_SUPPORT_CP | + AMD_PG_SUPPORT_GDS | + AMD_PG_SUPPORT_RLC_SMU_HS)) { gfx_v7_0_update_gfx_pg(adev, gate); - if (adev->pg_flags & AMDGPU_PG_SUPPORT_GFX_PG) { + if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) { gfx_v7_0_enable_cp_pg(adev, gate); gfx_v7_0_enable_gds_pg(adev, gate); } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 8aa2991ab379..b8060795b27b 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -792,7 +792,7 @@ static void gmc_v7_0_enable_mc_ls(struct amdgpu_device *adev, for (i = 0; i < ARRAY_SIZE(mc_cg_registers); i++) { orig = data = RREG32(mc_cg_registers[i]); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_MC_LS)) + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS)) data |= mc_cg_ls_en[i]; else data &= ~mc_cg_ls_en[i]; @@ -809,7 +809,7 @@ static void gmc_v7_0_enable_mc_mgcg(struct amdgpu_device *adev, for (i = 0; i < ARRAY_SIZE(mc_cg_registers); i++) { orig = data = RREG32(mc_cg_registers[i]); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_MC_MGCG)) + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) data |= mc_cg_en[i]; else data &= ~mc_cg_en[i]; @@ -825,7 +825,7 @@ static void gmc_v7_0_enable_bif_mgls(struct amdgpu_device *adev, orig = data = RREG32_PCIE(ixPCIE_CNTL2); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_BIF_LS)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) { data = REG_SET_FIELD(data, PCIE_CNTL2, SLV_MEM_LS_EN, 1); data = REG_SET_FIELD(data, PCIE_CNTL2, MST_MEM_LS_EN, 1); data = REG_SET_FIELD(data, PCIE_CNTL2, REPLAY_MEM_LS_EN, 1); @@ -848,7 +848,7 @@ static void gmc_v7_0_enable_hdp_mgcg(struct amdgpu_device *adev, orig = data = RREG32(mmHDP_HOST_PATH_CNTL); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_HDP_MGCG)) + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_MGCG)) data = REG_SET_FIELD(data, HDP_HOST_PATH_CNTL, CLOCK_GATING_DIS, 0); else data = REG_SET_FIELD(data, HDP_HOST_PATH_CNTL, CLOCK_GATING_DIS, 1); @@ -864,7 +864,7 @@ static void gmc_v7_0_enable_hdp_ls(struct amdgpu_device *adev, orig = data = RREG32(mmHDP_MEM_POWER_LS); - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_HDP_LS)) + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS)) data = REG_SET_FIELD(data, HDP_MEM_POWER_LS, LS_ENABLE, 1); else data = REG_SET_FIELD(data, HDP_MEM_POWER_LS, LS_ENABLE, 0); diff --git a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c index 7e9154c7f1db..654d76723bc3 100644 --- a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c @@ -2859,11 +2859,11 @@ static int kv_dpm_init(struct amdgpu_device *adev) pi->voltage_drop_t = 0; pi->caps_sclk_throttle_low_notification = false; pi->caps_fps = false; /* true? */ - pi->caps_uvd_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_UVD) ? true : false; + pi->caps_uvd_pg = (adev->pg_flags & AMD_PG_SUPPORT_UVD) ? true : false; pi->caps_uvd_dpm = true; - pi->caps_vce_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_VCE) ? true : false; - pi->caps_samu_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_SAMU) ? true : false; - pi->caps_acp_pg = (adev->pg_flags & AMDGPU_PG_SUPPORT_ACP) ? true : false; + pi->caps_vce_pg = (adev->pg_flags & AMD_PG_SUPPORT_VCE) ? true : false; + pi->caps_samu_pg = (adev->pg_flags & AMD_PG_SUPPORT_SAMU) ? true : false; + pi->caps_acp_pg = (adev->pg_flags & AMD_PG_SUPPORT_ACP) ? true : false; pi->caps_stable_p_state = false; ret = kv_parse_sys_info_table(adev); diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c index c982524d9287..fbd3767671bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c @@ -611,7 +611,7 @@ static void uvd_v4_2_enable_mgcg(struct amdgpu_device *adev, { u32 orig, data; - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG)) { data = RREG32_UVD_CTX(ixUVD_CGC_MEM_CTRL); data = 0xfff; WREG32_UVD_CTX(ixUVD_CGC_MEM_CTRL, data); @@ -830,7 +830,7 @@ static int uvd_v4_2_set_clockgating_state(void *handle, bool gate = false; struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) + if (!(adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG)) return 0; if (state == AMD_CG_STATE_GATE) @@ -853,7 +853,7 @@ static int uvd_v4_2_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD)) return 0; if (state == AMD_PG_STATE_GATE) { diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c index aad1ab596bdc..57f1c5bf3bf1 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c @@ -776,7 +776,7 @@ static int uvd_v5_0_set_clockgating_state(void *handle, { struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) + if (!(adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG)) return 0; return 0; @@ -794,7 +794,7 @@ static int uvd_v5_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD)) return 0; if (state == AMD_PG_STATE_GATE) { diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c index c41eda78f0b7..0b365b7651ff 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c @@ -532,7 +532,7 @@ static int uvd_v6_0_start(struct amdgpu_device *adev) uvd_v6_0_mc_resume(adev); /* Set dynamic clock gating in S/W control mode */ - if (adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG) { + if (adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG) { if (adev->flags & AMD_IS_APU) cz_set_uvd_clock_gating_branches(adev, false); else @@ -1000,7 +1000,7 @@ static int uvd_v6_0_set_clockgating_state(void *handle, struct amdgpu_device *adev = (struct amdgpu_device *)handle; bool enable = (state == AMD_CG_STATE_GATE) ? true : false; - if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_UVD_MGCG)) + if (!(adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG)) return 0; if (enable) { @@ -1030,7 +1030,7 @@ static int uvd_v6_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_UVD)) + if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD)) return 0; if (state == AMD_PG_STATE_GATE) { diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c index d3ce6085ccd2..a822edacfa95 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v2_0.c @@ -373,7 +373,7 @@ static void vce_v2_0_enable_mgcg(struct amdgpu_device *adev, bool enable) { bool sw_cg = false; - if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_VCE_MGCG)) { + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_VCE_MGCG)) { if (sw_cg) vce_v2_0_set_sw_cg(adev, true); else @@ -608,7 +608,7 @@ static int vce_v2_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_VCE)) + if (!(adev->pg_flags & AMD_PG_SUPPORT_VCE)) return 0; if (state == AMD_PG_STATE_GATE) diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c index 797d12c31475..d662fa9f9091 100644 --- a/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c @@ -277,7 +277,7 @@ static int vce_v3_0_start(struct amdgpu_device *adev) WREG32_P(mmVCE_STATUS, 0, ~1); /* Set Clock-Gating off */ - if (adev->cg_flags & AMDGPU_CG_SUPPORT_VCE_MGCG) + if (adev->cg_flags & AMD_CG_SUPPORT_VCE_MGCG) vce_v3_0_set_vce_sw_clock_gating(adev, false); if (r) { @@ -676,7 +676,7 @@ static int vce_v3_0_set_clockgating_state(void *handle, bool enable = (state == AMD_CG_STATE_GATE) ? true : false; int i; - if (!(adev->cg_flags & AMDGPU_CG_SUPPORT_VCE_MGCG)) + if (!(adev->cg_flags & AMD_CG_SUPPORT_VCE_MGCG)) return 0; mutex_lock(&adev->grbm_idx_mutex); @@ -728,7 +728,7 @@ static int vce_v3_0_set_powergating_state(void *handle, */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; - if (!(adev->pg_flags & AMDGPU_PG_SUPPORT_VCE)) + if (!(adev->pg_flags & AMD_PG_SUPPORT_VCE)) return 0; if (state == AMD_PG_STATE_GATE) diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index 1195d06f55bc..dbf7e6413cab 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -85,6 +85,38 @@ enum amd_powergating_state { AMD_PG_STATE_UNGATE, }; +/* CG flags */ +#define AMD_CG_SUPPORT_GFX_MGCG (1 << 0) +#define AMD_CG_SUPPORT_GFX_MGLS (1 << 1) +#define AMD_CG_SUPPORT_GFX_CGCG (1 << 2) +#define AMD_CG_SUPPORT_GFX_CGLS (1 << 3) +#define AMD_CG_SUPPORT_GFX_CGTS (1 << 4) +#define AMD_CG_SUPPORT_GFX_CGTS_LS (1 << 5) +#define AMD_CG_SUPPORT_GFX_CP_LS (1 << 6) +#define AMD_CG_SUPPORT_GFX_RLC_LS (1 << 7) +#define AMD_CG_SUPPORT_MC_LS (1 << 8) +#define AMD_CG_SUPPORT_MC_MGCG (1 << 9) +#define AMD_CG_SUPPORT_SDMA_LS (1 << 10) +#define AMD_CG_SUPPORT_SDMA_MGCG (1 << 11) +#define AMD_CG_SUPPORT_BIF_LS (1 << 12) +#define AMD_CG_SUPPORT_UVD_MGCG (1 << 13) +#define AMD_CG_SUPPORT_VCE_MGCG (1 << 14) +#define AMD_CG_SUPPORT_HDP_LS (1 << 15) +#define AMD_CG_SUPPORT_HDP_MGCG (1 << 16) + +/* PG flags */ +#define AMD_PG_SUPPORT_GFX_PG (1 << 0) +#define AMD_PG_SUPPORT_GFX_SMG (1 << 1) +#define AMD_PG_SUPPORT_GFX_DMG (1 << 2) +#define AMD_PG_SUPPORT_UVD (1 << 3) +#define AMD_PG_SUPPORT_VCE (1 << 4) +#define AMD_PG_SUPPORT_CP (1 << 5) +#define AMD_PG_SUPPORT_GDS (1 << 6) +#define AMD_PG_SUPPORT_RLC_SMU_HS (1 << 7) +#define AMD_PG_SUPPORT_SDMA (1 << 8) +#define AMD_PG_SUPPORT_ACP (1 << 9) +#define AMD_PG_SUPPORT_SAMU (1 << 10) + enum amd_pm_state_type { /* not used for dpm */ POWER_STATE_TYPE_DEFAULT, -- cgit v1.2.3 From 52b52a87814b4016bb324c0d1b45eb6e6f4cea3b Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 5 Feb 2016 11:11:51 -0500 Subject: drm/amdgpu/tonga: plumb pg flags through to powerplay Enable vce and uvd pg based on single set of pg flags. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c index 69c81c14d89c..980d3bf8ea76 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c @@ -4451,6 +4451,7 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr) pp_atomctrl_gpio_pin_assignment gpio_pin_assignment; struct phm_ppt_v1_information *pptable_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); phw_tonga_ulv_parm *ulv; + struct cgs_system_info sys_info = {0}; PP_ASSERT_WITH_CODE((NULL != hwmgr), "Invalid Parameter!", return -1;); @@ -4619,10 +4620,19 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr) PHM_PlatformCaps_UVDPowerGating); phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_VCEPowerGating); + sys_info.size = sizeof(struct cgs_system_info); + sys_info.info_id = CGS_SYSTEM_INFO_PG_FLAGS; + result = cgs_query_system_info(hwmgr->device, &sys_info); + if (!result) { + if (sys_info.value & AMD_PG_SUPPORT_UVD) + phm_cap_set(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_UVDPowerGating); + if (sys_info.value & AMD_PG_SUPPORT_VCE) + phm_cap_set(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_VCEPowerGating); + } if (0 == result) { - struct cgs_system_info sys_info = {0}; - data->is_tlu_enabled = 0; hwmgr->platform_descriptor.hardwareActivityPerformanceLevels = TONGA_MAX_HARDWARE_POWERLEVELS; -- cgit v1.2.3 From db5cffcd2bca5fafc4912446605101ec368d4d5f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 5 Feb 2016 11:23:28 -0500 Subject: drm/amdgpu/cz: plumb pg flags through to powerplay Enable vce and uvd pg based on single set of pg flags. Reviewed-by: Eric Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c index 80af87fa0bf0..cf01177ca3b5 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c @@ -174,6 +174,8 @@ static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr) { struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend); uint32_t i; + struct cgs_system_info sys_info = {0}; + int result; cz_hwmgr->gfx_ramp_step = 256*25/100; @@ -251,6 +253,17 @@ static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr) PHM_PlatformCaps_UVDPowerGating); phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_VCEPowerGating); + sys_info.size = sizeof(struct cgs_system_info); + sys_info.info_id = CGS_SYSTEM_INFO_PG_FLAGS; + result = cgs_query_system_info(hwmgr->device, &sys_info); + if (!result) { + if (sys_info.value & AMD_PG_SUPPORT_UVD) + phm_cap_set(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_UVDPowerGating); + if (sys_info.value & AMD_PG_SUPPORT_VCE) + phm_cap_set(hwmgr->platform_descriptor.platformCaps, + PHM_PlatformCaps_VCEPowerGating); + } return 0; } -- cgit v1.2.3 From b7d987295c74500b733a0ba07f9a9bcc4074fa83 Mon Sep 17 00:00:00 2001 From: Siva Reddy Kallam Date: Wed, 3 Feb 2016 14:09:38 +0530 Subject: tg3: Fix for tg3 transmit queue 0 timed out when too many gso_segs tg3_tso_bug() can hit a condition where the entire tx ring is not big enough to segment the GSO packet. For example, if MSS is very small, gso_segs can exceed the tx ring size. When we hit the condition, it will cause tx timeout. tg3_tso_bug() is called to handle TSO and DMA hardware bugs. For TSO bugs, if tg3_tso_bug() cannot succeed, we have to drop the packet. For DMA bugs, we can still fall back to linearize the SKB and let the hardware transmit the TSO packet. This patch adds a function tg3_tso_bug_gso_check() to check if there are enough tx descriptors for GSO before calling tg3_tso_bug(). The caller will then handle the error appropriately - drop or lineraize the SKB. v2: Corrected patch description to avoid confusion. Signed-off-by: Siva Reddy Kallam Signed-off-by: Michael Chan Acked-by: Prashant Sreedharan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 49eea8981332..3010080cfeee 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -7831,6 +7831,14 @@ static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi, return ret; } +static bool tg3_tso_bug_gso_check(struct tg3_napi *tnapi, struct sk_buff *skb) +{ + /* Check if we will never have enough descriptors, + * as gso_segs can be more than current ring size + */ + return skb_shinfo(skb)->gso_segs < tnapi->tx_pending / 3; +} + static netdev_tx_t tg3_start_xmit(struct sk_buff *, struct net_device *); /* Use GSO to workaround all TSO packets that meet HW bug conditions @@ -7934,14 +7942,19 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) * vlan encapsulated. */ if (skb->protocol == htons(ETH_P_8021Q) || - skb->protocol == htons(ETH_P_8021AD)) - return tg3_tso_bug(tp, tnapi, txq, skb); + skb->protocol == htons(ETH_P_8021AD)) { + if (tg3_tso_bug_gso_check(tnapi, skb)) + return tg3_tso_bug(tp, tnapi, txq, skb); + goto drop; + } if (!skb_is_gso_v6(skb)) { if (unlikely((ETH_HLEN + hdr_len) > 80) && - tg3_flag(tp, TSO_BUG)) - return tg3_tso_bug(tp, tnapi, txq, skb); - + tg3_flag(tp, TSO_BUG)) { + if (tg3_tso_bug_gso_check(tnapi, skb)) + return tg3_tso_bug(tp, tnapi, txq, skb); + goto drop; + } ip_csum = iph->check; ip_tot_len = iph->tot_len; iph->check = 0; @@ -8073,7 +8086,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) if (would_hit_hwbug) { tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i); - if (mss) { + if (mss && tg3_tso_bug_gso_check(tnapi, skb)) { /* If it's a TSO packet, do GSO instead of * allocating and copying to a large linear SKB */ -- cgit v1.2.3 From ca7f41a4957b872577807169bd7464b36aae9b9c Mon Sep 17 00:00:00 2001 From: Sandeep Pillai Date: Wed, 3 Feb 2016 14:40:44 +0530 Subject: enic: increment devcmd2 result ring in case of timeout Firmware posts the devcmd result in result ring. In case of timeout, driver does not increment the current result pointer and firmware could post the result after timeout has occurred. During next devcmd, driver would be reading the result of previous devcmd. Fix this by incrementing result even in case of timeout. Fixes: 373fb0873d43 ("enic: add devcmd2") Signed-off-by: Sandeep Pillai Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller --- drivers/net/ethernet/cisco/enic/enic.h | 2 +- drivers/net/ethernet/cisco/enic/vnic_dev.c | 19 ++++++++++++------- 2 files changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h index 1671fa3332c2..7ba6d530b0c0 100644 --- a/drivers/net/ethernet/cisco/enic/enic.h +++ b/drivers/net/ethernet/cisco/enic/enic.h @@ -33,7 +33,7 @@ #define DRV_NAME "enic" #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver" -#define DRV_VERSION "2.3.0.12" +#define DRV_VERSION "2.3.0.20" #define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc" #define ENIC_BARS_MAX 6 diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.c b/drivers/net/ethernet/cisco/enic/vnic_dev.c index 1ffd1050860b..1fdf5fe12a95 100644 --- a/drivers/net/ethernet/cisco/enic/vnic_dev.c +++ b/drivers/net/ethernet/cisco/enic/vnic_dev.c @@ -298,7 +298,8 @@ static int _vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, int wait) { struct devcmd2_controller *dc2c = vdev->devcmd2; - struct devcmd2_result *result = dc2c->result + dc2c->next_result; + struct devcmd2_result *result; + u8 color; unsigned int i; int delay, err; u32 fetch_index, new_posted; @@ -336,13 +337,17 @@ static int _vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT) return 0; + result = dc2c->result + dc2c->next_result; + color = dc2c->color; + + dc2c->next_result++; + if (dc2c->next_result == dc2c->result_size) { + dc2c->next_result = 0; + dc2c->color = dc2c->color ? 0 : 1; + } + for (delay = 0; delay < wait; delay++) { - if (result->color == dc2c->color) { - dc2c->next_result++; - if (dc2c->next_result == dc2c->result_size) { - dc2c->next_result = 0; - dc2c->color = dc2c->color ? 0 : 1; - } + if (result->color == color) { if (result->error) { err = result->error; if (err != ERR_ECMDUNKNOWN || -- cgit v1.2.3 From f5a952c08e842cb06eb5c65947ced9b5128a62ee Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Wed, 3 Feb 2016 21:35:29 +0200 Subject: of: of_mdio: Add marvell, 88e1145 to whitelist of PHY compatibilities. Commit ae461131960b ("of: of_mdio: Add a whitelist of PHY compatibilities.") missed one compatible string used in in-tree DTBs: in OCTEON, for selected boards, the kernel DTB pruning code will overwrite the DTB compatible string with "marvell,88e1145", which is missing from the whitelist. Add it. The patch fixes broken networking on EdgeRouter Lite. Fixes: ae461131960b ("of: of_mdio: Add a whitelist of PHY compatibilities.") Signed-off-by: Aaro Koskinen Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 5648317d355f..39c4be41ef83 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -154,6 +154,7 @@ static const struct of_device_id whitelist_phys[] = { { .compatible = "marvell,88E1111", }, { .compatible = "marvell,88e1116", }, { .compatible = "marvell,88e1118", }, + { .compatible = "marvell,88e1145", }, { .compatible = "marvell,88e1149r", }, { .compatible = "marvell,88e1310", }, { .compatible = "marvell,88E1510", }, -- cgit v1.2.3 From 42bbe400fbef6283a28227ea262a1145b27e957f Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Mon, 8 Feb 2016 18:58:34 +0530 Subject: thermal: of: use for_each_available_child_of_node for child iterator Use for_each_available_child_of_node() for iterating over each available child instead of iterating over each child and then checking their status. Signed-off-by: Laxman Dewangan Signed-off-by: Eduardo Valentin --- drivers/thermal/of-thermal.c | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index be4eedcb839a..9043f8f91852 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -475,14 +475,10 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data, sensor_np = of_node_get(dev->of_node); - for_each_child_of_node(np, child) { + for_each_available_child_of_node(np, child) { struct of_phandle_args sensor_specs; int ret, id; - /* Check whether child is enabled or not */ - if (!of_device_is_available(child)) - continue; - /* For now, thermal framework supports only 1 sensor per zone */ ret = of_parse_phandle_with_args(child, "thermal-sensors", "#thermal-sensor-cells", @@ -881,16 +877,12 @@ int __init of_parse_thermal_zones(void) return 0; /* Run successfully on systems without thermal DT */ } - for_each_child_of_node(np, child) { + for_each_available_child_of_node(np, child) { struct thermal_zone_device *zone; struct thermal_zone_params *tzp; int i, mask = 0; u32 prop; - /* Check whether child is enabled or not */ - if (!of_device_is_available(child)) - continue; - tz = thermal_of_build_thermal_zone(child); if (IS_ERR(tz)) { pr_err("failed to build thermal zone %s: %ld\n", @@ -968,13 +960,9 @@ void of_thermal_destroy_zones(void) return; } - for_each_child_of_node(np, child) { + for_each_available_child_of_node(np, child) { struct thermal_zone_device *zone; - /* Check whether child is enabled or not */ - if (!of_device_is_available(child)) - continue; - zone = thermal_zone_get_zone_by_name(child->name); if (IS_ERR(zone)) continue; -- cgit v1.2.3 From 8b477ea56383dc8b838f1f8b506e4571c14ceb30 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 28 Jan 2016 02:45:08 +0000 Subject: thermal: rcar: enable to use thermal-zone on DT This patch enables to use thermal-zone on DT if it was calles as "renesas,rcar-thermal-gen2". Previous style (= non thermal-zone) is still supported by "renesas,rcar-thermal" to keep compatibility for "git bisect". Signed-off-by: Kuninori Morimoto Signed-off-by: Eduardo Valentin --- drivers/thermal/rcar_thermal.c | 45 +++++++++++++++++++++++++++++++++++++----- 1 file changed, 40 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 44b9c485157d..0e735acea33a 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -75,8 +76,10 @@ struct rcar_thermal_priv { #define rcar_has_irq_support(priv) ((priv)->common->base) #define rcar_id_to_shift(priv) ((priv)->id * 8) +#define USE_OF_THERMAL 1 static const struct of_device_id rcar_thermal_dt_ids[] = { { .compatible = "renesas,rcar-thermal", }, + { .compatible = "renesas,rcar-gen2-thermal", .data = (void *)USE_OF_THERMAL }, {}, }; MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids); @@ -200,9 +203,9 @@ err_out_unlock: return ret; } -static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp) +static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv, + int *temp) { - struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); int tmp; int ret; @@ -226,6 +229,20 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp) return 0; } +static int rcar_thermal_of_get_temp(void *data, int *temp) +{ + struct rcar_thermal_priv *priv = data; + + return rcar_thermal_get_current_temp(priv, temp); +} + +static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp) +{ + struct rcar_thermal_priv *priv = rcar_zone_to_priv(zone); + + return rcar_thermal_get_current_temp(priv, temp); +} + static int rcar_thermal_get_trip_type(struct thermal_zone_device *zone, int trip, enum thermal_trip_type *type) { @@ -282,6 +299,10 @@ static int rcar_thermal_notify(struct thermal_zone_device *zone, return 0; } +static const struct thermal_zone_of_device_ops rcar_thermal_zone_of_ops = { + .get_temp = rcar_thermal_of_get_temp, +}; + static struct thermal_zone_device_ops rcar_thermal_zone_ops = { .get_temp = rcar_thermal_get_temp, .get_trip_type = rcar_thermal_get_trip_type, @@ -318,14 +339,20 @@ static void rcar_thermal_work(struct work_struct *work) priv = container_of(work, struct rcar_thermal_priv, work.work); - rcar_thermal_get_temp(priv->zone, &cctemp); + ret = rcar_thermal_get_current_temp(priv, &cctemp); + if (ret < 0) + return; + ret = rcar_thermal_update_temp(priv); if (ret < 0) return; rcar_thermal_irq_enable(priv); - rcar_thermal_get_temp(priv->zone, &nctemp); + ret = rcar_thermal_get_current_temp(priv, &nctemp); + if (ret < 0) + return; + if (nctemp != cctemp) thermal_zone_device_update(priv->zone); } @@ -403,6 +430,8 @@ static int rcar_thermal_probe(struct platform_device *pdev) struct rcar_thermal_priv *priv; struct device *dev = &pdev->dev; struct resource *res, *irq; + const struct of_device_id *of_id = of_match_device(rcar_thermal_dt_ids, dev); + unsigned long of_data = (unsigned long)of_id->data; int mres = 0; int i; int ret = -ENODEV; @@ -463,7 +492,13 @@ static int rcar_thermal_probe(struct platform_device *pdev) if (ret < 0) goto error_unregister; - priv->zone = thermal_zone_device_register("rcar_thermal", + if (of_data == USE_OF_THERMAL) + priv->zone = thermal_zone_of_sensor_register( + dev, i, priv, + &rcar_thermal_zone_of_ops); + else + priv->zone = thermal_zone_device_register( + "rcar_thermal", 1, 0, priv, &rcar_thermal_zone_ops, NULL, 0, idle); -- cgit v1.2.3 From d612c64d1f4d6b2464993dfeafd9ec319f774188 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 17:44:10 +0100 Subject: thermal: spear: use __maybe_unused for PM functions The spear thermal driver hides its suspend/resume function conditionally based on CONFIG_PM, but references them based on CONFIG_PM_SLEEP, so we get a warning if the former is set but the latter is not: thermal/spear_thermal.c:58:12: warning: 'spear_thermal_suspend' defined but not used [-Wunused-function] thermal/spear_thermal.c:75:12: warning: 'spear_thermal_resume' defined but not used [-Wunused-function] This removes the #ifdef and instead uses a __maybe_uninitialized annotation to avoid the warning and improve compile-time coverage. Signed-off-by: Arnd Bergmann Signed-off-by: Eduardo Valentin --- drivers/thermal/spear_thermal.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c index 534dd9136662..81b35aace9de 100644 --- a/drivers/thermal/spear_thermal.c +++ b/drivers/thermal/spear_thermal.c @@ -54,8 +54,7 @@ static struct thermal_zone_device_ops ops = { .get_temp = thermal_get_temp, }; -#ifdef CONFIG_PM -static int spear_thermal_suspend(struct device *dev) +static int __maybe_unused spear_thermal_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev); @@ -72,7 +71,7 @@ static int spear_thermal_suspend(struct device *dev) return 0; } -static int spear_thermal_resume(struct device *dev) +static int __maybe_unused spear_thermal_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev); @@ -94,7 +93,6 @@ static int spear_thermal_resume(struct device *dev) return 0; } -#endif static SIMPLE_DEV_PM_OPS(spear_thermal_pm_ops, spear_thermal_suspend, spear_thermal_resume); -- cgit v1.2.3 From 4d2f1794c07aae55b8f25f4d8aebcafc0d3e501d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 17:44:11 +0100 Subject: thermal: allow spear-thermal driver to be a module When the thermal subsystem is a loadable module, the spear driver fails to build: drivers/thermal/built-in.o: In function `spear_thermal_exit': spear_thermal.c:(.text+0xf8): undefined reference to `thermal_zone_device_unregister' drivers/thermal/built-in.o: In function `spear_thermal_probe': spear_thermal.c:(.text+0x230): undefined reference to `thermal_zone_device_register' This changes the symbol to a tristate, so Kconfig can track the dependency correctly. Signed-off-by: Arnd Bergmann Signed-off-by: Eduardo Valentin --- drivers/thermal/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 8cc4ac64a91c..0852fd028dc9 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -195,7 +195,7 @@ config IMX_THERMAL passive trip is crossed. config SPEAR_THERMAL - bool "SPEAr thermal sensor driver" + tristate "SPEAr thermal sensor driver" depends on PLAT_SPEAR || COMPILE_TEST depends on OF help -- cgit v1.2.3 From 26716ce124fce88f288f07738ef685d5dfe5c13f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Jan 2016 17:44:12 +0100 Subject: thermal: allow u8500-thermal driver to be a module When the thermal subsystem is a loadable module, the u8500 driver fails to build: drivers/thermal/built-in.o: In function `db8500_thermal_probe': db8500_thermal.c:(.text+0x96c): undefined reference to `thermal_zone_device_register' drivers/thermal/built-in.o: In function `db8500_thermal_work': db8500_thermal.c:(.text+0xab4): undefined reference to `thermal_zone_device_update' This changes the symbol to a tristate, so Kconfig can track the dependency correctly. Signed-off-by: Arnd Bergmann Signed-off-by: Eduardo Valentin --- drivers/mfd/db8500-prcmu.c | 3 +++ drivers/thermal/Kconfig | 4 ++-- 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index e6e4bacb09ee..12099b09a9a7 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -2048,6 +2048,7 @@ int db8500_prcmu_config_hotmon(u8 low, u8 high) return 0; } +EXPORT_SYMBOL_GPL(db8500_prcmu_config_hotmon); static int config_hot_period(u16 val) { @@ -2074,11 +2075,13 @@ int db8500_prcmu_start_temp_sense(u16 cycles32k) return config_hot_period(cycles32k); } +EXPORT_SYMBOL_GPL(db8500_prcmu_start_temp_sense); int db8500_prcmu_stop_temp_sense(void) { return config_hot_period(0xFFFF); } +EXPORT_SYMBOL_GPL(db8500_prcmu_stop_temp_sense); static int prcmu_a9wdog(u8 cmd, u8 d0, u8 d1, u8 d2, u8 d3) { diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 0852fd028dc9..7c92c09be213 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -237,8 +237,8 @@ config DOVE_THERMAL framework. config DB8500_THERMAL - bool "DB8500 thermal management" - depends on ARCH_U8500 + tristate "DB8500 thermal management" + depends on MFD_DB8500_PRCMU default y help Adds DB8500 thermal management implementation according to the thermal -- cgit v1.2.3 From dc262dfaaeda7617ae0b15b5ce1252a6cd102b19 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Tue, 9 Feb 2016 09:32:42 -0800 Subject: Input: edt-ft5x06 - fix setting gain, offset, and threshold via device tree A recent patch broke parsing the gain, offset, and threshold parameters from device tree. Instead of setting the cached values and writing them to the correct registers during probe, it would write the values from DT into the register address variables and never write them to the chip during normal operation. Fixes: 2e23b7a96372 ("Input: edt-ft5x06 - use generic properties API") Signed-off-by: Philipp Zabel Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/edt-ft5x06.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 0b0f8c17f3f7..23fbe382da8b 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -822,16 +822,22 @@ static void edt_ft5x06_ts_get_defaults(struct device *dev, int error; error = device_property_read_u32(dev, "threshold", &val); - if (!error) - reg_addr->reg_threshold = val; + if (!error) { + edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val); + tsdata->threshold = val; + } error = device_property_read_u32(dev, "gain", &val); - if (!error) - reg_addr->reg_gain = val; + if (!error) { + edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val); + tsdata->gain = val; + } error = device_property_read_u32(dev, "offset", &val); - if (!error) - reg_addr->reg_offset = val; + if (!error) { + edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val); + tsdata->offset = val; + } } static void -- cgit v1.2.3 From 7008dafb02c858411d70b82c3aeb40f93b93c67a Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 9 Feb 2016 09:35:33 -0800 Subject: Input: adp5589 - fix row 5 handling for adp5589 The adp5589 has row 5, don't skip it when creating the GPIO mapping. Otherwise the pin gets reserved as used and it is not possible to use it as a GPIO. Signed-off-by: Lars-Peter Clausen Acked-by: Michael Hennerich Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/adp5589-keys.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/input/keyboard/adp5589-keys.c b/drivers/input/keyboard/adp5589-keys.c index 4d446d5085aa..c01a1d648f9f 100644 --- a/drivers/input/keyboard/adp5589-keys.c +++ b/drivers/input/keyboard/adp5589-keys.c @@ -235,7 +235,7 @@ struct adp5589_kpad { unsigned short gpimapsize; unsigned extend_cfg; bool is_adp5585; - bool adp5585_support_row5; + bool support_row5; #ifdef CONFIG_GPIOLIB unsigned char gpiomap[ADP5589_MAXGPIO]; bool export_gpio; @@ -485,7 +485,7 @@ static int adp5589_build_gpiomap(struct adp5589_kpad *kpad, if (kpad->extend_cfg & C4_EXTEND_CFG) pin_used[kpad->var->c4_extend_cfg] = true; - if (!kpad->adp5585_support_row5) + if (!kpad->support_row5) pin_used[5] = true; for (i = 0; i < kpad->var->maxgpio; i++) @@ -884,12 +884,13 @@ static int adp5589_probe(struct i2c_client *client, switch (id->driver_data) { case ADP5585_02: - kpad->adp5585_support_row5 = true; + kpad->support_row5 = true; case ADP5585_01: kpad->is_adp5585 = true; kpad->var = &const_adp5585; break; case ADP5589: + kpad->support_row5 = true; kpad->var = &const_adp5589; break; } -- cgit v1.2.3 From ff84dabe3c6ebba517086e1161145d70ff129665 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 9 Feb 2016 10:32:53 -0800 Subject: Input: colibri-vf50-ts - add missing #include MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/input/touchscreen/colibri-vf50-ts.c: In function ‘vf50_ts_probe’: drivers/input/touchscreen/colibri-vf50-ts.c:302: error: implicit declaration of function ‘of_property_read_u32’ Signed-off-by: Geert Uytterhoeven Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/colibri-vf50-ts.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/input/touchscreen/colibri-vf50-ts.c b/drivers/input/touchscreen/colibri-vf50-ts.c index 5d4903a402cc..69828d015d45 100644 --- a/drivers/input/touchscreen/colibri-vf50-ts.c +++ b/drivers/input/touchscreen/colibri-vf50-ts.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include -- cgit v1.2.3 From b82fcabe212a11698fd4b3e604d2f81d929d22f6 Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 28 Jan 2016 16:14:18 +0800 Subject: phy: core: fix wrong err handle for phy_power_on If phy_pm_runtime_get_sync failed but we already enable regulator, current code return directly without doing regulator_disable. This patch fix this problem and cleanup err handle of phy_power_on to be more readable. Fixes: 3be88125d85d ("phy: core: Support regulator ...") Cc: # v3.18+ Cc: Roger Quadros Cc: Axel Lin Signed-off-by: Shawn Lin Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8c7f27db6ad3..e7e574dc667a 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -275,20 +275,21 @@ EXPORT_SYMBOL_GPL(phy_exit); int phy_power_on(struct phy *phy) { - int ret; + int ret = 0; if (!phy) - return 0; + goto out; if (phy->pwr) { ret = regulator_enable(phy->pwr); if (ret) - return ret; + goto out; } ret = phy_pm_runtime_get_sync(phy); if (ret < 0 && ret != -ENOTSUPP) - return ret; + goto err_pm_sync; + ret = 0; /* Override possible ret == -ENOTSUPP */ mutex_lock(&phy->mutex); @@ -296,19 +297,20 @@ int phy_power_on(struct phy *phy) ret = phy->ops->power_on(phy); if (ret < 0) { dev_err(&phy->dev, "phy poweron failed --> %d\n", ret); - goto out; + goto err_pwr_on; } } ++phy->power_count; mutex_unlock(&phy->mutex); return 0; -out: +err_pwr_on: mutex_unlock(&phy->mutex); phy_pm_runtime_put_sync(phy); +err_pm_sync: if (phy->pwr) regulator_disable(phy->pwr); - +out: return ret; } EXPORT_SYMBOL_GPL(phy_power_on); -- cgit v1.2.3 From b241d31ef2f6a289d33dcaa004714b26e06f476f Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 30 Nov 2015 21:39:53 -0800 Subject: phy: twl4030-usb: Relase usb phy on unload Otherwise rmmod omap2430; rmmod phy-twl4030-usb; modprobe omap2430 will try to use a non-existing phy and oops: Unable to handle kernel paging request at virtual address b6f7c1f0 ... [] (devm_usb_get_phy_by_node) from [] (omap2430_musb_init+0x44/0x2b4 [omap2430]) [] (omap2430_musb_init [omap2430]) from [] (musb_init_controller+0x194/0x878 [musb_hdrc]) Cc: stable@vger.kernel.org Cc: Bin Liu Cc: Felipe Balbi Cc: Kishon Vijay Abraham I Cc: NeilBrown Signed-off-by: Tony Lindgren Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-twl4030-usb.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c index 4a3fc6e59f8e..fe5538ff380f 100644 --- a/drivers/phy/phy-twl4030-usb.c +++ b/drivers/phy/phy-twl4030-usb.c @@ -750,6 +750,7 @@ static int twl4030_usb_remove(struct platform_device *pdev) struct twl4030_usb *twl = platform_get_drvdata(pdev); int val; + usb_remove_phy(&twl->phy); pm_runtime_get_sync(twl->dev); cancel_delayed_work(&twl->id_workaround_work); device_remove_file(twl->dev, &dev_attr_vbus); -- cgit v1.2.3 From 58a66dba1beac2121d931cda4682ae4d40816af5 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 30 Nov 2015 21:39:54 -0800 Subject: phy: twl4030-usb: Fix unbalanced pm_runtime_enable on module reload If we reload phy-twl4030-usb, we get a warning about unbalanced pm_runtime_enable. Let's fix the issue and also fix idling of the device on unload before we attempt to shut it down. If we don't properly idle the PHY before shutting it down on removal, the twl4030 ends up consuming about 62mW of extra power compared to running idle with the module loaded. Cc: stable@vger.kernel.org Cc: Bin Liu Cc: Felipe Balbi Cc: Kishon Vijay Abraham I Cc: NeilBrown Signed-off-by: Tony Lindgren Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-twl4030-usb.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c index fe5538ff380f..840f3eae428b 100644 --- a/drivers/phy/phy-twl4030-usb.c +++ b/drivers/phy/phy-twl4030-usb.c @@ -715,6 +715,7 @@ static int twl4030_usb_probe(struct platform_device *pdev) pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_autosuspend_delay(&pdev->dev, 2000); pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); /* Our job is to use irqs and status from the power module * to keep the transceiver disabled when nothing's connected. @@ -758,6 +759,13 @@ static int twl4030_usb_remove(struct platform_device *pdev) /* set transceiver mode to power on defaults */ twl4030_usb_set_mode(twl, -1); + /* idle ulpi before powering off */ + if (cable_present(twl->linkstat)) + pm_runtime_put_noidle(twl->dev); + pm_runtime_mark_last_busy(twl->dev); + pm_runtime_put_sync_suspend(twl->dev); + pm_runtime_disable(twl->dev); + /* autogate 60MHz ULPI clock, * clear dpll clock request for i2c access, * disable 32KHz @@ -772,11 +780,6 @@ static int twl4030_usb_remove(struct platform_device *pdev) /* disable complete OTG block */ twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - if (cable_present(twl->linkstat)) - pm_runtime_put_noidle(twl->dev); - pm_runtime_mark_last_busy(twl->dev); - pm_runtime_put(twl->dev); - return 0; } -- cgit v1.2.3 From f00ab14c252ac459e86194747a1f580ab503c954 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Tue, 9 Feb 2016 09:34:30 -0800 Subject: mmc: block: return error on failed mmc_blk_get() This used to return -EFAULT, but the function above returns -EINVAL on the same condition so let's stick to that. The removal of error return on this path was introduced with b093410c9aef ('mmc: block: copy resp[] data on err for MMC_IOC_MULTI_CMD'). Fixes: b093410c9aef ('mmc: block: copy resp[] data on err for MMC_IOC_MULTI_CMD'). Signed-off-by: Olof Johansson Cc: Grant Grundler Signed-off-by: Ulf Hansson --- drivers/mmc/card/block.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 5914263090fc..951641a96806 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -655,8 +655,10 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, } md = mmc_blk_get(bdev->bd_disk); - if (!md) + if (!md) { + err = -EINVAL; goto cmd_err; + } card = md->queue.card; if (IS_ERR(card)) { -- cgit v1.2.3 From 310a7e60435151ccab6dc4bc64b4b3a93b89c0d1 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 28 Jan 2016 19:08:50 +0530 Subject: gpio: davinci: Add the missing of-node pointer Currently the first parameter of irq_domain_add_legacy is NULL. irq_find_host function returns NULL when we do not populate the of_node and hence irq_of_parse_and_map call fails whenever we want to request a gpio irq. This fixes the request_irq failures for gpio interrupts. Signed-off-by: Keerthy Reviewed-by: Grygorii Strashko Signed-off-by: Linus Walleij --- drivers/gpio/gpio-davinci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index ec58f4288649..c889f3166205 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -511,7 +511,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev) return irq; } - irq_domain = irq_domain_add_legacy(NULL, ngpio, irq, 0, + irq_domain = irq_domain_add_legacy(dev->of_node, ngpio, irq, 0, &davinci_gpio_irq_ops, chips); if (!irq_domain) { -- cgit v1.2.3 From 6ec9249a83b00a754af435ed57ad02ffed105d93 Mon Sep 17 00:00:00 2001 From: Lokesh Vutla Date: Thu, 28 Jan 2016 19:08:51 +0530 Subject: gpio: davinci: Fix the number of controllers allocated Driver only needs to allocate for [ngpio / 32] controllers, as each controller handles 32 gpios. But the current driver allocates for ngpio of which the extra allocated are unused. Fix it be registering only the required number of controllers. Signed-off-by: Lokesh Vutla Signed-off-by: Keerthy Reviewed-by: Grygorii Strashko Signed-off-by: Linus Walleij --- drivers/gpio/gpio-davinci.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index c889f3166205..cd007a67b302 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -195,7 +195,7 @@ static int davinci_gpio_of_xlate(struct gpio_chip *gc, static int davinci_gpio_probe(struct platform_device *pdev) { int i, base; - unsigned ngpio; + unsigned ngpio, nbank; struct davinci_gpio_controller *chips; struct davinci_gpio_platform_data *pdata; struct davinci_gpio_regs __iomem *regs; @@ -224,8 +224,9 @@ static int davinci_gpio_probe(struct platform_device *pdev) if (WARN_ON(ARCH_NR_GPIOS < ngpio)) ngpio = ARCH_NR_GPIOS; + nbank = DIV_ROUND_UP(ngpio, 32); chips = devm_kzalloc(dev, - ngpio * sizeof(struct davinci_gpio_controller), + nbank * sizeof(struct davinci_gpio_controller), GFP_KERNEL); if (!chips) return -ENOMEM; -- cgit v1.2.3 From 72564b59ffc438ea103b0727a921aaddce766728 Mon Sep 17 00:00:00 2001 From: David Wragg Date: Wed, 10 Feb 2016 00:05:55 +0000 Subject: vxlan: Relax MTU constraints Allow the MTU of vxlan devices without an underlying device to be set to larger values (up to a maximum based on IP packet limits and vxlan overhead). Previously, their MTUs could not be set to higher than the conventional ethernet value of 1500. This is a very arbitrary value in the context of vxlan, and prevented vxlan devices from being able to take advantage of jumbo frames etc. The default MTU remains 1500, for compatibility. Signed-off-by: David Wragg Acked-by: Roopa Prabhu Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 36 +++++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 65439188c582..e992c6a05f86 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2367,29 +2367,43 @@ static void vxlan_set_multicast_list(struct net_device *dev) { } -static int vxlan_change_mtu(struct net_device *dev, int new_mtu) +static int __vxlan_change_mtu(struct net_device *dev, + struct net_device *lowerdev, + struct vxlan_rdst *dst, int new_mtu, bool strict) { - struct vxlan_dev *vxlan = netdev_priv(dev); - struct vxlan_rdst *dst = &vxlan->default_dst; - struct net_device *lowerdev; - int max_mtu; + int max_mtu = IP_MAX_MTU; - lowerdev = __dev_get_by_index(vxlan->net, dst->remote_ifindex); - if (lowerdev == NULL) - return eth_change_mtu(dev, new_mtu); + if (lowerdev) + max_mtu = lowerdev->mtu; if (dst->remote_ip.sa.sa_family == AF_INET6) - max_mtu = lowerdev->mtu - VXLAN6_HEADROOM; + max_mtu -= VXLAN6_HEADROOM; else - max_mtu = lowerdev->mtu - VXLAN_HEADROOM; + max_mtu -= VXLAN_HEADROOM; - if (new_mtu < 68 || new_mtu > max_mtu) + if (new_mtu < 68) return -EINVAL; + if (new_mtu > max_mtu) { + if (strict) + return -EINVAL; + + new_mtu = max_mtu; + } + dev->mtu = new_mtu; return 0; } +static int vxlan_change_mtu(struct net_device *dev, int new_mtu) +{ + struct vxlan_dev *vxlan = netdev_priv(dev); + struct vxlan_rdst *dst = &vxlan->default_dst; + struct net_device *lowerdev = __dev_get_by_index(vxlan->net, + dst->remote_ifindex); + return __vxlan_change_mtu(dev, lowerdev, dst, new_mtu, true); +} + static int egress_ipv4_tun_info(struct net_device *dev, struct sk_buff *skb, struct ip_tunnel_info *info, __be16 sport, __be16 dport) -- cgit v1.2.3 From 55e5bfb53cff286c1c1ff49f51325dc15c7fea63 Mon Sep 17 00:00:00 2001 From: David Wragg Date: Wed, 10 Feb 2016 00:05:57 +0000 Subject: geneve: Relax MTU constraints Allow the MTU of geneve devices to be set to large values, in order to exploit underlying networks with larger frame sizes. GENEVE does not have a fixed encapsulation overhead (an openvswitch rule can add variable length options), so there is no relevant maximum MTU to enforce. A maximum of IP_MAX_MTU is used instead. Encapsulated packets that are too big for the underlying network will get dropped on the floor. Signed-off-by: David Wragg Signed-off-by: David S. Miller --- drivers/net/geneve.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 0b14ac3b8d11..d2031ce8baea 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1039,6 +1039,17 @@ static netdev_tx_t geneve_xmit(struct sk_buff *skb, struct net_device *dev) return geneve_xmit_skb(skb, dev, info); } +static int geneve_change_mtu(struct net_device *dev, int new_mtu) +{ + /* GENEVE overhead is not fixed, so we can't enforce a more + * precise max MTU. + */ + if (new_mtu < 68 || new_mtu > IP_MAX_MTU) + return -EINVAL; + dev->mtu = new_mtu; + return 0; +} + static int geneve_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb) { struct ip_tunnel_info *info = skb_tunnel_info(skb); @@ -1083,7 +1094,7 @@ static const struct net_device_ops geneve_netdev_ops = { .ndo_stop = geneve_stop, .ndo_start_xmit = geneve_xmit, .ndo_get_stats64 = ip_tunnel_get_stats64, - .ndo_change_mtu = eth_change_mtu, + .ndo_change_mtu = geneve_change_mtu, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, .ndo_fill_metadata_dst = geneve_fill_metadata_dst, -- cgit v1.2.3 From 7e059158d57b79159eaf1f504825d19866ef2c42 Mon Sep 17 00:00:00 2001 From: David Wragg Date: Wed, 10 Feb 2016 00:05:58 +0000 Subject: vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices Prior to 4.3, openvswitch tunnel vports (vxlan, gre and geneve) could transmit vxlan packets of any size, constrained only by the ability to send out the resulting packets. 4.3 introduced netdevs corresponding to tunnel vports. These netdevs have an MTU, which limits the size of a packet that can be successfully encapsulated. The default MTU values are low (1500 or less), which is awkwardly small in the context of physical networks supporting jumbo frames, and leads to a conspicuous change in behaviour for userspace. Instead, set the MTU on openvswitch-created netdevs to be the relevant maximum (i.e. the maximum IP packet size minus any relevant overhead), effectively restoring the behaviour prior to 4.3. Signed-off-by: David Wragg Signed-off-by: David S. Miller --- drivers/net/geneve.c | 18 ++++++++++++++---- drivers/net/vxlan.c | 11 ++++++++--- 2 files changed, 22 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index d2031ce8baea..028e3873c310 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1453,11 +1453,21 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name, err = geneve_configure(net, dev, &geneve_remote_unspec, 0, 0, 0, htons(dst_port), true, 0); - if (err) { - free_netdev(dev); - return ERR_PTR(err); - } + if (err) + goto err; + + /* openvswitch users expect packet sizes to be unrestricted, + * so set the largest MTU we can. + */ + err = geneve_change_mtu(dev, IP_MAX_MTU); + if (err) + goto err; + return dev; + + err: + free_netdev(dev); + return ERR_PTR(err); } EXPORT_SYMBOL_GPL(geneve_dev_create_fb); diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index e992c6a05f86..a31cd954b308 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2779,6 +2779,7 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, int err; bool use_ipv6 = false; __be16 default_port = vxlan->cfg.dst_port; + struct net_device *lowerdev = NULL; vxlan->net = src_net; @@ -2799,9 +2800,7 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, } if (conf->remote_ifindex) { - struct net_device *lowerdev - = __dev_get_by_index(src_net, conf->remote_ifindex); - + lowerdev = __dev_get_by_index(src_net, conf->remote_ifindex); dst->remote_ifindex = conf->remote_ifindex; if (!lowerdev) { @@ -2825,6 +2824,12 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, needed_headroom = lowerdev->hard_header_len; } + if (conf->mtu) { + err = __vxlan_change_mtu(dev, lowerdev, dst, conf->mtu, false); + if (err) + return err; + } + if (use_ipv6 || conf->flags & VXLAN_F_COLLECT_METADATA) needed_headroom += VXLAN6_HEADROOM; else -- cgit v1.2.3 From a32ef81c9889c9554a3c4b465c4ee7b2d26c6b10 Mon Sep 17 00:00:00 2001 From: Chris Paterson Date: Wed, 10 Feb 2016 14:07:01 +0000 Subject: mmc: sh_mmcif: Correct TX DMA channel allocation Commit 27cbd7e815a8 ("mmc: sh_mmcif: rework dma channel handling") introduced a typo causing the TX DMA channel allocation to be overwritten by the requested RX DMA channel. Fixes: 27cbd7e815a8 ("mmc: sh_mmcif: rework dma channel handling") Signed-off-by: Chris Paterson Acked-by: Laurent Pinchart Acked-by: Arnd Bergmann Signed-off-by: Ulf Hansson --- drivers/mmc/host/sh_mmcif.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 1ca8a1359cbc..6234eab38ff3 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -445,7 +445,7 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host) pdata->slave_id_rx); } else { host->chan_tx = dma_request_slave_channel(dev, "tx"); - host->chan_tx = dma_request_slave_channel(dev, "rx"); + host->chan_rx = dma_request_slave_channel(dev, "rx"); } dev_dbg(dev, "%s: got channel TX %p RX %p\n", __func__, host->chan_tx, host->chan_rx); -- cgit v1.2.3 From 342decff2b846b46fa61eb5ee40986fab79a9a32 Mon Sep 17 00:00:00 2001 From: Alexandra Yates Date: Fri, 5 Feb 2016 15:27:49 -0800 Subject: ahci: Intel DNV device IDs SATA Adding Intel codename DNV platform device IDs for SATA. Signed-off-by: Alexandra Yates Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- drivers/ata/ahci.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 594fcabd22cd..546a3692774f 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -264,6 +264,26 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */ { PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH RAID */ { PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */ + { PCI_VDEVICE(INTEL, 0x19b0), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b1), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b2), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b3), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b4), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b5), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b6), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19b7), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19bE), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19bF), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c0), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c1), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c2), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c3), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c4), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c5), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c6), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19c7), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19cE), board_ahci }, /* DNV AHCI */ + { PCI_VDEVICE(INTEL, 0x19cF), board_ahci }, /* DNV AHCI */ { PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */ { PCI_VDEVICE(INTEL, 0x1c03), board_ahci }, /* CPT AHCI */ { PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */ -- cgit v1.2.3 From ca19852884c8937eed89560f924f5a34cfcc22af Mon Sep 17 00:00:00 2001 From: Flora Cui Date: Thu, 4 Feb 2016 15:10:08 +0800 Subject: drm/amdgpu: fix s4 resume No need to re-init asic if it's already been initialized. Skip IB tests since kernel processes are frozen in thaw. Signed-off-by: Flora Cui Reviewed-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 85991cee62e6..51bfc114584e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1795,15 +1795,20 @@ int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon) } /* post card */ - amdgpu_atom_asic_init(adev->mode_info.atom_context); + if (!amdgpu_card_posted(adev)) + amdgpu_atom_asic_init(adev->mode_info.atom_context); r = amdgpu_resume(adev); + if (r) + DRM_ERROR("amdgpu_resume failed (%d).\n", r); amdgpu_fence_driver_resume(adev); - r = amdgpu_ib_ring_tests(adev); - if (r) - DRM_ERROR("ib ring test failed (%d).\n", r); + if (resume) { + r = amdgpu_ib_ring_tests(adev); + if (r) + DRM_ERROR("ib ring test failed (%d).\n", r); + } r = amdgpu_late_init(adev); if (r) -- cgit v1.2.3 From a8d81b36267366603771431747438d18f32ae2d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolai=20H=C3=A4hnle?= Date: Fri, 5 Feb 2016 10:59:43 -0500 Subject: drm/amdgpu: hold reference to fences in amdgpu_sa_bo_new (v2) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit An arbitrary amount of time can pass between spin_unlock and fence_wait_any_timeout, so we need to ensure that nobody frees the fences from under us. A stress test (rapidly starting and killing hundreds of glxgears instances) ran into a deadlock in fence_wait_any_timeout after about an hour, and this race condition appears to be a plausible cause. v2: agd: rebase on upstream Signed-off-by: Nicolai Hähnle Reviewed-by: Alex Deucher Reviewed-by: Christian König Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c index 8b88edb0434b..ca72a2e487b9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c @@ -354,12 +354,15 @@ int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager, for (i = 0, count = 0; i < AMDGPU_MAX_RINGS; ++i) if (fences[i]) - fences[count++] = fences[i]; + fences[count++] = fence_get(fences[i]); if (count) { spin_unlock(&sa_manager->wq.lock); t = fence_wait_any_timeout(fences, count, false, MAX_SCHEDULE_TIMEOUT); + for (i = 0; i < count; ++i) + fence_put(fences[i]); + r = (t > 0) ? 0 : t; spin_lock(&sa_manager->wq.lock); } else { -- cgit v1.2.3 From b19763d0d867eb863953500a5c87f2fd663863b8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolai=20H=C3=A4hnle?= Date: Fri, 5 Feb 2016 10:49:50 -0500 Subject: drm/amdgpu: remove unnecessary forward declaration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Nicolai Hähnle Reviewed-by: Alex Deucher Reviewed-by: Christian König Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 6808facaf6af..43e7ed1e74e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -567,8 +567,6 @@ struct amdgpu_sa_manager { uint32_t align; }; -struct amdgpu_sa_bo; - /* sub-allocation buffer */ struct amdgpu_sa_bo { struct list_head olist; -- cgit v1.2.3 From f6ff4f67cdf8455d0a4226eeeaf5af17c37d05eb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolai=20H=C3=A4hnle?= Date: Fri, 5 Feb 2016 14:35:53 -0500 Subject: drm/radeon: hold reference to fences in radeon_sa_bo_new MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit An arbitrary amount of time can pass between spin_unlock and radeon_fence_wait_any, so we need to ensure that nobody frees the fences from under us. Based on the analogous fix for amdgpu. Signed-off-by: Nicolai Hähnle Reviewed-by: Christian König Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_sa.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c index c507896aca45..197b157b73d0 100644 --- a/drivers/gpu/drm/radeon/radeon_sa.c +++ b/drivers/gpu/drm/radeon/radeon_sa.c @@ -349,8 +349,13 @@ int radeon_sa_bo_new(struct radeon_device *rdev, /* see if we can skip over some allocations */ } while (radeon_sa_bo_next_hole(sa_manager, fences, tries)); + for (i = 0; i < RADEON_NUM_RINGS; ++i) + radeon_fence_ref(fences[i]); + spin_unlock(&sa_manager->wq.lock); r = radeon_fence_wait_any(rdev, fences, false); + for (i = 0; i < RADEON_NUM_RINGS; ++i) + radeon_fence_unref(&fences[i]); spin_lock(&sa_manager->wq.lock); /* if we have nothing to wait for block */ if (r == -ENOENT) { -- cgit v1.2.3 From cc1de6e800c253172334f8774c419dc64401cd2e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 8 Feb 2016 10:57:22 +0100 Subject: drm/amdgpu: fix issue with overlapping userptrs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Otherwise we could try to evict overlapping userptr BOs in get_user_pages(), leading to a possible circular locking dependency. Signed-off-by: Christian König Acked-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c | 3 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 19 +++++++++++++++++++ 3 files changed, 23 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 43e7ed1e74e7..5e7770f9a415 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -2319,6 +2319,8 @@ bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo); int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, uint32_t flags); bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm); +bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start, + unsigned long end); bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm); uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, struct ttm_mem_reg *mem); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c index b1969f2b2038..d4e2780c0796 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c @@ -142,7 +142,8 @@ static void amdgpu_mn_invalidate_range_start(struct mmu_notifier *mn, list_for_each_entry(bo, &node->bos, mn_list) { - if (!bo->tbo.ttm || bo->tbo.ttm->state != tt_bound) + if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, + end)) continue; r = amdgpu_bo_reserve(bo, true); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 55cf05e1c81c..6442a06d6fdc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -783,6 +783,25 @@ bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm) return !!gtt->userptr; } +bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start, + unsigned long end) +{ + struct amdgpu_ttm_tt *gtt = (void *)ttm; + unsigned long size; + + if (gtt == NULL) + return false; + + if (gtt->ttm.ttm.state != tt_bound || !gtt->userptr) + return false; + + size = (unsigned long)gtt->ttm.ttm.num_pages * PAGE_SIZE; + if (gtt->userptr > end || gtt->userptr + size <= start) + return false; + + return true; +} + bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm) { struct amdgpu_ttm_tt *gtt = (void *)ttm; -- cgit v1.2.3 From 2e498f25b0daa9dec761e3e880024ff7417f2445 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 10 Feb 2016 20:34:56 -0800 Subject: target: Fix incorrect unmap_zeroes_data_store return This patch fixes an incorrect return of zero from the new unmap_zeroes_data_store() configfs store attribute handler introduced in v4.5-rc1, to use the correct 'count' bytes return value. Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_configfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 3327c49674d3..713c63d9681b 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -898,7 +898,7 @@ static ssize_t unmap_zeroes_data_store(struct config_item *item, da->unmap_zeroes_data = flag; pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", da->da_dev, flag); - return 0; + return count; } /* -- cgit v1.2.3 From 9095adaab8c1d82707e4e9961b6ad79b62f3361b Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Wed, 10 Feb 2016 18:59:13 -0500 Subject: target/transport: add flag to indicate CPU Affinity is observed Signed-off-by: Quinn Tran Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Fixes: fb3269b ("qla2xxx: Add selective command queuing") Signed-off-by: Himanshu Madhani Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_transport.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index d92cb644d8f9..867bc6d0a68a 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -711,10 +711,10 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) cmd->transport_state |= (CMD_T_COMPLETE | CMD_T_ACTIVE); spin_unlock_irqrestore(&cmd->t_state_lock, flags); - if (cmd->cpuid == -1) - queue_work(target_completion_wq, &cmd->work); - else + if (cmd->se_cmd_flags & SCF_USE_CPUID) queue_work_on(cmd->cpuid, target_completion_wq, &cmd->work); + else + queue_work(target_completion_wq, &cmd->work); } EXPORT_SYMBOL(target_complete_cmd); @@ -1426,6 +1426,12 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess */ transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess, data_length, data_dir, task_attr, sense); + + if (flags & TARGET_SCF_USE_CPUID) + se_cmd->se_cmd_flags |= SCF_USE_CPUID; + else + se_cmd->cpuid = WORK_CPU_UNBOUND; + if (flags & TARGET_SCF_UNKNOWN_SIZE) se_cmd->unknown_data_length = 1; /* -- cgit v1.2.3 From 5327c7dbd1a7fd980608f44789076a636e5ee5fc Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Wed, 10 Feb 2016 18:59:14 -0500 Subject: qla2xxx: use TARGET_SCF_USE_CPUID flag to indiate CPU Affinity Signed-off-by: Quinn Tran Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Fixes: fb3269b ("qla2xxx: Add selective command queuing") Signed-off-by: Himanshu Madhani Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 4 ++-- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 3 +++ 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 46c667979411..ee967becd257 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -4004,7 +4004,8 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, cmd->cmd_in_wq = 1; cmd->cmd_flags |= BIT_0; - cmd->se_cmd.cpuid = -1; + cmd->se_cmd.cpuid = ha->msix_count ? + ha->tgt.rspq_vector_cpuid : WORK_CPU_UNBOUND; spin_lock(&vha->cmd_list_lock); list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); @@ -4012,7 +4013,6 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, INIT_WORK(&cmd->work, qlt_do_work); if (ha->msix_count) { - cmd->se_cmd.cpuid = ha->tgt.rspq_vector_cpuid; if (cmd->atio.u.isp24.fcp_cmnd.rddata) queue_work_on(smp_processor_id(), qla_tgt_wq, &cmd->work); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 3eecdd1bc6fb..1808a01cfb7e 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -462,6 +462,9 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, if (bidi) flags |= TARGET_SCF_BIDI_OP; + if (se_cmd->cpuid != WORK_CPU_UNBOUND) + flags |= TARGET_SCF_USE_CPUID; + sess = cmd->sess; if (!sess) { pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); -- cgit v1.2.3 From 8e7199c2c50fff1969302643171eaa33f1ca148f Mon Sep 17 00:00:00 2001 From: Daniel Stone Date: Mon, 8 Feb 2016 21:12:58 +0000 Subject: component: remove device from master match list on failed add Calling component_add() may result in the completion of a set of devices, which will try to bring up a master. In bringing the master up, we populate its match array with the current set of children. If binding any of the devices fails, component_add() itself will fail, free the struct component entry, and return to the caller. The now-freed entry is never removed from the master's match array, and will later be used in a futile attempt to bind to freed memory. Bring component_add's behaviour on failure to bring up a master into line with component_del by removing the (to-be-freed) component from the master's match array. The specific case which broke was: - rockchip_drm_drv adds a component master - dwhdmi_rockchip adds a child component in probe (master incomplete) - rockchip_drm_vop adds two children in probe, which completes the set - inside component_add, we try to bring up the master, having populated the master's match array, and fail with EPROBE_DEFER from dwhdmi_rockchip; we delete the putative component - rockchip_drm_vop's probe fails and returns EPROBE_DEFER - we later re-probe rockchip_drm_vop and add the component; the master is complete, so we attempt to bring it up again - walking the match array, we find the previous child, whose master pointer doesn't match (as it has been freed in the meantime) - rockchip_drm_vop probe fails, and will never be attempted again Fixes: ffc30b74fd6d01588bd3fdebc3b1acc0857e6fc8 Signed-off-by: Daniel Stone Cc: Russell King Cc: Thierry Reding Cc: Laurent Pinchart Signed-off-by: Russell King --- drivers/base/component.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/base/component.c b/drivers/base/component.c index 2738039aae9e..04a1582e80bb 100644 --- a/drivers/base/component.c +++ b/drivers/base/component.c @@ -491,6 +491,8 @@ int component_add(struct device *dev, const struct component_ops *ops) ret = try_to_bring_up_masters(component); if (ret < 0) { + if (component->master) + remove_component(component->master, component); list_del(&component->node); kfree(component); -- cgit v1.2.3 From 7bf29d3af6807d2a97a8b7d4627104a8da9bcdcb Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Tue, 9 Feb 2016 15:24:56 +0000 Subject: irqchip/gic: Only populate set_affinity for the root controller Setting the affinity of an IRQ, it only applicable for the root interrupt controller and so only populate this operator for the root controller. Acked-by: Marc Zyngier Signed-off-by: Jon Hunter Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 911758c056c1..db7b161b0295 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -384,9 +384,6 @@ static struct irq_chip gic_chip = { .irq_unmask = gic_unmask_irq, .irq_eoi = gic_eoi_irq, .irq_set_type = gic_set_type, -#ifdef CONFIG_SMP - .irq_set_affinity = gic_set_affinity, -#endif .irq_get_irqchip_state = gic_irq_get_irqchip_state, .irq_set_irqchip_state = gic_irq_set_irqchip_state, .flags = IRQCHIP_SET_TYPE_MASKED | @@ -400,9 +397,6 @@ static struct irq_chip gic_eoimode1_chip = { .irq_unmask = gic_unmask_irq, .irq_eoi = gic_eoimode1_eoi_irq, .irq_set_type = gic_set_type, -#ifdef CONFIG_SMP - .irq_set_affinity = gic_set_affinity, -#endif .irq_get_irqchip_state = gic_irq_get_irqchip_state, .irq_set_irqchip_state = gic_irq_set_irqchip_state, .irq_set_vcpu_affinity = gic_irq_set_vcpu_affinity, @@ -1039,6 +1033,11 @@ static void __init __gic_init_bases(unsigned int gic_nr, int irq_start, gic->chip.name = kasprintf(GFP_KERNEL, "GIC-%d", gic_nr); } +#ifdef CONFIG_SMP + if (gic_nr == 0) + gic->chip.irq_set_affinity = gic_set_affinity; +#endif + #ifdef CONFIG_GIC_NON_BANKED if (percpu_offset) { /* Frankein-GIC without banked registers... */ unsigned int cpu; -- cgit v1.2.3 From 389a00d3ad02a06b5d6d692cce76fed6a3dae8b4 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Tue, 9 Feb 2016 15:24:57 +0000 Subject: irqchip/gic: Only set the EOImodeNS bit for the root controller EOImode1 is only used for the root controller and hence only the root controller uses the eoimode1 functions for handling interrupts. However, if the root controller supports EOImode1, then the EOImodeNS bit will be set for all GICs, enabling EOImode1. This is not what we want and this causes interrupts on non-root GICs to only be dropped in priority but never deactivated. Therefore, only set the EOImodeNS bit for the root controller. Acked-by: Marc Zyngier Signed-off-by: Jon Hunter Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index db7b161b0295..8f9ebf714e2b 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -437,7 +437,7 @@ static void gic_cpu_if_up(struct gic_chip_data *gic) u32 bypass = 0; u32 mode = 0; - if (static_key_true(&supports_deactivate)) + if (gic == &gic_data[0] && static_key_true(&supports_deactivate)) mode = GIC_CPU_CTRL_EOImodeNS; /* -- cgit v1.2.3 From bf60e592a1af4d6f65dd54593250183f14360eed Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 9 Feb 2016 16:12:35 +0200 Subject: mmc: sdhci: Allow override of mmc host operations In the past, fixes for specific hardware devices were implemented in sdhci using quirks. That approach is no longer accepted because the growing number of quirks was starting to make the code difficult to understand and maintain. One alternative to quirks, is to allow drivers to override the default mmc host operations. This patch makes it easy to do that, and it is needed for a subsequent bug fix, for which separate patches are provided. Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci.c | 3 ++- drivers/mmc/host/sdhci.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index d622435d1bcc..9bfa66df963a 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2849,6 +2849,8 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev, host = mmc_priv(mmc); host->mmc = mmc; + host->mmc_host_ops = sdhci_ops; + mmc->ops = &host->mmc_host_ops; return host; } @@ -3037,7 +3039,6 @@ int sdhci_add_host(struct sdhci_host *host) /* * Set host parameters. */ - mmc->ops = &sdhci_ops; max_clk = host->max_clk; if (host->ops->get_min_clock) diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 7654ae5d2b4e..0115e9907bf8 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -430,6 +430,7 @@ struct sdhci_host { /* Internal data */ struct mmc_host *mmc; /* MMC structure */ + struct mmc_host_ops mmc_host_ops; /* MMC host ops */ u64 dma_mask; /* custom DMA mask */ #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) -- cgit v1.2.3 From 8d28b7a72fe18bcdcdb047243ba8fec36b149955 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 9 Feb 2016 16:12:36 +0200 Subject: mmc: sdhci: Allow override of get_cd() called from sdhci_request() Drivers may need to provide their own get_cd() mmc host op, but currently the internals of the current op (sdhci_get_cd()) are provided by sdhci_do_get_cd() which is also called from sdhci_request(). To allow override of the get_cd functionality, change sdhci_request() to call ->get_cd() instead of sdhci_do_get_cd(). Note, in the future the call to ->get_cd() will likely be removed from sdhci_request() since most drivers don't need actually it. However this change is being done now to facilitate a subsequent bug fix. Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 9bfa66df963a..add9fdfd1d8f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1360,7 +1360,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) sdhci_runtime_pm_get(host); /* Firstly check card presence */ - present = sdhci_do_get_cd(host); + present = mmc->ops->get_cd(mmc); spin_lock_irqsave(&host->lock, flags); -- cgit v1.2.3 From 163cbe31e5163459908a41a2b4e0d33a28fd557a Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 9 Feb 2016 16:12:37 +0200 Subject: mmc: sdhci-pci: Fix card detect race for Intel BXT/APL Intel BXT/APL use a card detect GPIO however the host controller will not enable bus power unless it's card detect also reflects the presence of a card. Unfortunately those 2 things race which can result in commands not starting, after which the controller does nothing and there is a 10 second wait for the driver's 10-second timer to timeout. That is fixed by having the driver look also at the present state register to determine if the card is present. Consequently, provide a 'get_cd' mmc host operation for BXT/APL that does that. Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-pci-core.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index cc851b065d0a..df3b8eced8c4 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -330,6 +330,33 @@ static void spt_read_drive_strength(struct sdhci_host *host) sdhci_pci_spt_drive_strength = 0x10 | ((val >> 12) & 0xf); } +static int bxt_get_cd(struct mmc_host *mmc) +{ + int gpio_cd = mmc_gpio_get_cd(mmc); + struct sdhci_host *host = mmc_priv(mmc); + unsigned long flags; + int ret = 0; + + if (!gpio_cd) + return 0; + + pm_runtime_get_sync(mmc->parent); + + spin_lock_irqsave(&host->lock, flags); + + if (host->flags & SDHCI_DEVICE_DEAD) + goto out; + + ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); +out: + spin_unlock_irqrestore(&host->lock, flags); + + pm_runtime_mark_last_busy(mmc->parent); + pm_runtime_put_autosuspend(mmc->parent); + + return ret; +} + static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) { slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | @@ -362,6 +389,10 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) slot->cd_con_id = NULL; slot->cd_idx = 0; slot->cd_override_level = true; + if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD || + slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD) + slot->host->mmc_host_ops.get_cd = bxt_get_cd; + return 0; } -- cgit v1.2.3 From 6a645dd87a5a506779810d7d9935c25fc2ef4687 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 9 Feb 2016 16:12:38 +0200 Subject: mmc: sdhci-acpi: Fix card detect race for Intel BXT/APL Intel BXT/APL use a card detect GPIO however the host controller will not enable bus power unless it's card detect also reflects the presence of a card. Unfortunately those 2 things race which can result in commands not starting, after which the controller does nothing and there is a 10 second wait for the driver's 10-second timer to timeout. That is fixed by having the driver look also at the present state register to determine if the card is present. Consequently, provide a 'get_cd' mmc host operation for BXT/APL that does that. Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-acpi.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index f6047fc94062..a5cda926d38e 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -146,6 +146,33 @@ static const struct sdhci_acpi_chip sdhci_acpi_chip_int = { .ops = &sdhci_acpi_ops_int, }; +static int bxt_get_cd(struct mmc_host *mmc) +{ + int gpio_cd = mmc_gpio_get_cd(mmc); + struct sdhci_host *host = mmc_priv(mmc); + unsigned long flags; + int ret = 0; + + if (!gpio_cd) + return 0; + + pm_runtime_get_sync(mmc->parent); + + spin_lock_irqsave(&host->lock, flags); + + if (host->flags & SDHCI_DEVICE_DEAD) + goto out; + + ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); +out: + spin_unlock_irqrestore(&host->lock, flags); + + pm_runtime_mark_last_busy(mmc->parent); + pm_runtime_put_autosuspend(mmc->parent); + + return ret; +} + static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev, const char *hid, const char *uid) { @@ -196,6 +223,9 @@ static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev, /* Platform specific code during sd probe slot goes here */ + if (hid && !strcmp(hid, "80865ACA")) + host->mmc_host_ops.get_cd = bxt_get_cd; + return 0; } -- cgit v1.2.3 From a53b8394ec3c67255928df6ee9cc99dd1cd452e3 Mon Sep 17 00:00:00 2001 From: Javi Merino Date: Thu, 11 Feb 2016 12:00:51 +0000 Subject: thermal: cpu_cooling: fix out of bounds access in time_in_idle In __cpufreq_cooling_register() we allocate the arrays for time_in_idle and time_in_idle_timestamp to be as big as the number of cpus in this cpufreq device. However, in get_load() we access this array using the cpu number as index, which can result in an out of bound access. Index time_in_idle{,_timestamp} using the index in the cpufreq_device's allowed_cpus mask, as we do for the load_cpu array in cpufreq_get_requested_power() Reported-by: Nicolas Boichat Cc: Amit Daniel Kachhap Cc: Zhang Rui Cc: Eduardo Valentin Tested-by: Nicolas Boichat Acked-by: Viresh Kumar Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin --- drivers/thermal/cpu_cooling.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index e3fbc5a5d88f..6ceac4f2d4b2 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -377,26 +377,28 @@ static u32 cpu_power_to_freq(struct cpufreq_cooling_device *cpufreq_device, * get_load() - get load for a cpu since last updated * @cpufreq_device: &struct cpufreq_cooling_device for this cpu * @cpu: cpu number + * @cpu_idx: index of the cpu in cpufreq_device->allowed_cpus * * Return: The average load of cpu @cpu in percentage since this * function was last called. */ -static u32 get_load(struct cpufreq_cooling_device *cpufreq_device, int cpu) +static u32 get_load(struct cpufreq_cooling_device *cpufreq_device, int cpu, + int cpu_idx) { u32 load; u64 now, now_idle, delta_time, delta_idle; now_idle = get_cpu_idle_time(cpu, &now, 0); - delta_idle = now_idle - cpufreq_device->time_in_idle[cpu]; - delta_time = now - cpufreq_device->time_in_idle_timestamp[cpu]; + delta_idle = now_idle - cpufreq_device->time_in_idle[cpu_idx]; + delta_time = now - cpufreq_device->time_in_idle_timestamp[cpu_idx]; if (delta_time <= delta_idle) load = 0; else load = div64_u64(100 * (delta_time - delta_idle), delta_time); - cpufreq_device->time_in_idle[cpu] = now_idle; - cpufreq_device->time_in_idle_timestamp[cpu] = now; + cpufreq_device->time_in_idle[cpu_idx] = now_idle; + cpufreq_device->time_in_idle_timestamp[cpu_idx] = now; return load; } @@ -598,7 +600,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev, u32 load; if (cpu_online(cpu)) - load = get_load(cpufreq_device, cpu); + load = get_load(cpufreq_device, cpu, i); else load = 0; -- cgit v1.2.3 From a5ebb87db84392edfd3142c3a6a78431d820a789 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Thu, 11 Feb 2016 16:42:58 +0100 Subject: Revert "mmc: block: don't use parameter prefix if built as module" This reverts commit 829b6962f7e3cfc06f7c5c26269fd47ad48cf503. Revert this change as it causes a sysfs path to change and therefore introduces and ABI regression. More precisely Android's vold is not being able to access /sys/module/mmcblk/parameters/perdev_minors any more, since the path becomes changed to: "/sys/module/mmc_block/..." Fixes: 829b6962f7e3 ("mmc: block: don't use parameter prefix if built as module") Reported-by: John Stultz Cc: Andy Shevchenko Signed-off-by: Ulf Hansson --- drivers/mmc/card/block.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 951641a96806..fe207e542032 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -47,13 +47,10 @@ #include "queue.h" MODULE_ALIAS("mmc:block"); - -#ifdef KERNEL #ifdef MODULE_PARAM_PREFIX #undef MODULE_PARAM_PREFIX #endif #define MODULE_PARAM_PREFIX "mmcblk." -#endif #define INAND_CMD38_ARG_EXT_CSD 113 #define INAND_CMD38_ARG_ERASE 0x00 -- cgit v1.2.3 From fa51b247d67b521e1a1103cad75eb7a666fc9ff9 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Tue, 9 Feb 2016 21:11:14 +0100 Subject: net/mlx4: fix some error handling in mlx4_multi_func_init() The while loop after err_slaves should use post-decrement; otherwise we'll fail to do the kfrees for i==0, and will run into out-of-bounds accesses if the setup above failed already at i==0. [I'm not sure why one even bothers populating the ->vlan_filter array: mlx4.h isn't #included by anything outside drivers/net/ethernet/mellanox/mlx4/, and "git grep -C2 -w vlan_filter drivers/net/ethernet/mellanox/mlx4/" seems to suggest that the vlan_filter elements aren't used at all.] Signed-off-by: Rasmus Villemoes Signed-off-by: Doug Ledford --- drivers/net/ethernet/mellanox/mlx4/cmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index d48d5793407d..e94ca1c3fc7c 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -2429,7 +2429,7 @@ err_thread: flush_workqueue(priv->mfunc.master.comm_wq); destroy_workqueue(priv->mfunc.master.comm_wq); err_slaves: - while (--i) { + while (i--) { for (port = 1; port <= MLX4_MAX_PORTS; port++) kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]); } -- cgit v1.2.3 From ee50aeac60ba5c4c7e072fbc0c9aa2043c8896e6 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 11 Feb 2016 10:24:42 +0200 Subject: IB/core: Fix reading capability mask of the port info class When checking specific attribute from a bit mask, need to use bitwise AND and not logical AND, fixed that. Fixes: 145d9c541032 ('IB/core: Display extended counter set if available') Signed-off-by: Eran Ben Elisha Signed-off-by: Matan Barak Reviewed-by: Or Gerlitz Reviewed-by: Christoph Lameter Signed-off-by: Doug Ledford --- drivers/infiniband/core/sysfs.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index ec46386e3c7f..14606afbfaa8 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -720,12 +720,11 @@ static struct attribute_group *get_counter_table(struct ib_device *dev, if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, &cpi, 40, sizeof(cpi)) >= 0) { - - if (cpi.capability_mask && IB_PMA_CLASS_CAP_EXT_WIDTH) + if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) /* We have extended counters */ return &pma_group_ext; - if (cpi.capability_mask && IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) + if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) /* But not the IETF ones */ return &pma_group_noietf; } -- cgit v1.2.3 From 08bc327629cbd63bb2f66677e4b33b643695097c Mon Sep 17 00:00:00 2001 From: Alex Estrin Date: Thu, 11 Feb 2016 16:30:51 -0500 Subject: IB/ipoib: fix for rare multicast join race condition A narrow window for race condition still exist between multicast join thread and *dev_flush workers. A kernel crash caused by prolong erratic link state changes was observed (most likely a faulty cabling): [167275.656270] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [167275.665973] IP: [] ipoib_mcast_join+0xae/0x1d0 [ib_ipoib] [167275.674443] PGD 0 [167275.677373] Oops: 0000 [#1] SMP ... [167275.977530] Call Trace: [167275.982225] [] ? ipoib_mcast_free+0x200/0x200 [ib_ipoib] [167275.992024] [] ipoib_mcast_join_task+0x2a7/0x490 [ib_ipoib] [167276.002149] [] process_one_work+0x17b/0x470 [167276.010754] [] worker_thread+0x11b/0x400 [167276.019088] [] ? rescuer_thread+0x400/0x400 [167276.027737] [] kthread+0xcf/0xe0 Here was a hit spot: ipoib_mcast_join() { .............. rec.qkey = priv->broadcast->mcmember.qkey; ^^^^^^^ ..... } Proposed patch should prevent multicast join task to continue if link state change is detected. Signed-off-by: Alex Estrin Changes from v4: - as suggested by Doug Ledford, optimized spinlock usage, i.e. ipoib_mcast_join() is called with lock held. Changes from v3: - sync with priv->lock before flag check. Chages from v2: - Move check for OPER_UP flag state to mcast_join() to ensure no event worker is in progress. - minor style fixes. Changes from v1: - No need to lock again if error detected. Signed-off-by: Doug Ledford --- drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index 050dfa175d16..25889311b1e9 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -456,7 +456,10 @@ out_locked: return status; } -static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast) +/* + * Caller must hold 'priv->lock' + */ +static int ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast) { struct ipoib_dev_priv *priv = netdev_priv(dev); struct ib_sa_multicast *multicast; @@ -466,6 +469,10 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast) ib_sa_comp_mask comp_mask; int ret = 0; + if (!priv->broadcast || + !test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) + return -EINVAL; + ipoib_dbg_mcast(priv, "joining MGID %pI6\n", mcast->mcmember.mgid.raw); rec.mgid = mcast->mcmember.mgid; @@ -525,20 +532,23 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast) rec.join_state = 4; #endif } + spin_unlock_irq(&priv->lock); multicast = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port, &rec, comp_mask, GFP_KERNEL, ipoib_mcast_join_complete, mcast); + spin_lock_irq(&priv->lock); if (IS_ERR(multicast)) { ret = PTR_ERR(multicast); ipoib_warn(priv, "ib_sa_join_multicast failed, status %d\n", ret); - spin_lock_irq(&priv->lock); /* Requeue this join task with a backoff delay */ __ipoib_mcast_schedule_join_thread(priv, mcast, 1); clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); spin_unlock_irq(&priv->lock); complete(&mcast->done); + spin_lock_irq(&priv->lock); } + return 0; } void ipoib_mcast_join_task(struct work_struct *work) @@ -620,9 +630,10 @@ void ipoib_mcast_join_task(struct work_struct *work) /* Found the next unjoined group */ init_completion(&mcast->done); set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); - spin_unlock_irq(&priv->lock); - ipoib_mcast_join(dev, mcast); - spin_lock_irq(&priv->lock); + if (ipoib_mcast_join(dev, mcast)) { + spin_unlock_irq(&priv->lock); + return; + } } else if (!delay_until || time_before(mcast->delay_until, delay_until)) delay_until = mcast->delay_until; @@ -641,10 +652,9 @@ out: if (mcast) { init_completion(&mcast->done); set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); + ipoib_mcast_join(dev, mcast); } spin_unlock_irq(&priv->lock); - if (mcast) - ipoib_mcast_join(dev, mcast); } int ipoib_mcast_start_thread(struct net_device *dev) -- cgit v1.2.3 From 75c1657e1d50730dc0130a67977f7831a4e241f4 Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Thu, 11 Feb 2016 21:09:57 +0200 Subject: IB/mlx5: Fix RC transport send queue overhead computation Fix the RC QPs send queue overhead computation to take into account two additional segments in the WQE which are needed for registration operations. The ATOMIC and UMR segments can't coexist together, so chose maximum out of them. The commit 9e65dc371b5c ("IB/mlx5: Fix RC transport send queue overhead computation") was intended to update RC transport as commit messages states, but added the code to UC transport. Fixes: 9e65dc371b5c ("IB/mlx5: Fix RC transport send queue overhead computation") Signed-off-by: Kamal Heib Signed-off-by: Leon Romanovsky Reviewed-by: Sagi Grimberg Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx5/qp.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 9116bc3988a6..34cb8e87c7b8 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -270,8 +270,10 @@ static int sq_overhead(enum ib_qp_type qp_type) /* fall through */ case IB_QPT_RC: size += sizeof(struct mlx5_wqe_ctrl_seg) + - sizeof(struct mlx5_wqe_atomic_seg) + - sizeof(struct mlx5_wqe_raddr_seg); + max(sizeof(struct mlx5_wqe_atomic_seg) + + sizeof(struct mlx5_wqe_raddr_seg), + sizeof(struct mlx5_wqe_umr_ctrl_seg) + + sizeof(struct mlx5_mkey_seg)); break; case IB_QPT_XRC_TGT: @@ -279,9 +281,9 @@ static int sq_overhead(enum ib_qp_type qp_type) case IB_QPT_UC: size += sizeof(struct mlx5_wqe_ctrl_seg) + - sizeof(struct mlx5_wqe_raddr_seg) + - sizeof(struct mlx5_wqe_umr_ctrl_seg) + - sizeof(struct mlx5_mkey_seg); + max(sizeof(struct mlx5_wqe_raddr_seg), + sizeof(struct mlx5_wqe_umr_ctrl_seg) + + sizeof(struct mlx5_mkey_seg)); break; case IB_QPT_UD: -- cgit v1.2.3