diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-04-07 11:36:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-04-07 11:36:44 -0700 |
| commit | df9b29d13e043e134e65b9f66b68fa7eae5db8f0 (patch) | |
| tree | f2c9ec8792a35bf0ea0b7227cad7275a5b1d0453 | |
| parent | 7bc30c23c8ace3821a6732bfbe7e8f1b0995a63e (diff) | |
| parent | 28276a28d8b3cd19f4449991faad4945fe557656 (diff) | |
Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (28 commits)
staging: usbip: bugfix for isochronous packets and optimization
staging: usbip: bugfix add number of packets for isochronous frames
staging: usbip: bugfixes related to kthread conversion
staging: usbip: fix shutdown problems.
staging: hv: Fix GARP not sent after Quick Migration
staging: IIO: IMU: ADIS16400: Avoid using printk facility directly
staging: IIO: IMU: ADIS16400: Fix product ID check, skip embedded revision number
staging: IIO: IMU: ADIS16400: Make sure only enabled scan_elements are pushed into the ring
staging: IIO: IMU: ADIS16400: Fix addresses of GYRO and ACCEL calibration offset
staging: IIO: IMU: ADIS16400: Add delay after self test
staging: IIO: IMU: ADIS16400: Fix up SPI messages cs_change behavior
staging/rtl81*: build as loadable modules only
staging: brcm80211: removed 'is_amsdu causing toss' log spam
staging: brcm80211: fix for 'Short CCK' log spam
staging: brcm80211: fix for 'AC_BE txop..' logs spammed problem
staging: memrar: remove driver from tree
staging: sep: remove last memrar remnants
staging: fix hv_mouse build, needs delay.h
staging: fix olpc_dcon build errors
staging: sm7xx: fixed defines
...
Fix up trivial conflict in drivers/staging/memrar/memrar_handler.c
(deleted vs trivial spelling fixes)
40 files changed, 324 insertions, 2092 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 18b43fcb4171..dca4a0bb6ca9 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -117,8 +117,6 @@ source "drivers/staging/hv/Kconfig" source "drivers/staging/vme/Kconfig" -source "drivers/staging/memrar/Kconfig" - source "drivers/staging/sep/Kconfig" source "drivers/staging/iio/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index cfd13cd55efb..eb93012b6f59 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -40,7 +40,6 @@ obj-$(CONFIG_VT6655) += vt6655/ obj-$(CONFIG_VT6656) += vt6656/ obj-$(CONFIG_HYPERV) += hv/ obj-$(CONFIG_VME_BUS) += vme/ -obj-$(CONFIG_MRST_RAR_HANDLER) += memrar/ obj-$(CONFIG_DX_SEP) += sep/ obj-$(CONFIG_IIO) += iio/ obj-$(CONFIG_CS5535_GPIO) += cs5535_gpio/ diff --git a/drivers/staging/brcm80211/brcmsmac/wlc_main.c b/drivers/staging/brcm80211/brcmsmac/wlc_main.c index 717fced45801..ab7ab850e199 100644 --- a/drivers/staging/brcm80211/brcmsmac/wlc_main.c +++ b/drivers/staging/brcm80211/brcmsmac/wlc_main.c @@ -6283,7 +6283,7 @@ wlc_d11hdrs_mac80211(struct wlc_info *wlc, struct ieee80211_hw *hw, ((preamble_type[1] == WLC_MM_PREAMBLE) == (txh->MModeFbrLen != 0))); - ac = wme_fifo2ac[queue]; + ac = skb_get_queue_mapping(p); if (SCB_WME(scb) && qos && wlc->edcf_txop[ac]) { uint frag_dur, dur, dur_fallback; @@ -6919,8 +6919,7 @@ prep_mac80211_status(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p, preamble = 0; if (IS_CCK(rspec)) { if (rxh->PhyRxStatus_0 & PRXS0_SHORTH) - WL_ERROR("Short CCK\n"); - rx_status->flag |= RX_FLAG_SHORTPRE; + rx_status->flag |= RX_FLAG_SHORTPRE; } else if (IS_OFDM(rspec)) { rx_status->flag |= RX_FLAG_SHORTPRE; } else { @@ -7079,10 +7078,8 @@ void BCMFASTPATH wlc_recv(struct wlc_info *wlc, struct sk_buff *p) if (ieee80211_is_probe_req(h->frame_control)) goto toss; - if (is_amsdu) { - WL_ERROR("%s: is_amsdu causing toss\n", __func__); + if (is_amsdu) goto toss; - } wlc_recvctl(wlc, rxh, p); return; diff --git a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c index b0729fc3c89a..fb375ea26dd2 100644 --- a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c +++ b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c @@ -95,47 +95,47 @@ void put_request_value(struct net_device *dev, long lvalue); USHORT hdr_checksum(PPSEUDO_HDR pHdr); typedef struct _DSP_FILE_HDR { - long build_date; - long dsp_coff_date; - long loader_code_address; - long loader_code_size; - long loader_code_end; - long dsp_code_address; - long dsp_code_size; - long dsp_code_end; - long reserved[8]; + u32 build_date; + u32 dsp_coff_date; + u32 loader_code_address; + u32 loader_code_size; + u32 loader_code_end; + u32 dsp_code_address; + u32 dsp_code_size; + u32 dsp_code_end; + u32 reserved[8]; } __attribute__ ((packed)) DSP_FILE_HDR, *PDSP_FILE_HDR; typedef struct _DSP_FILE_HDR_5 { - long version_id; // Version ID of this image format. - long package_id; // Package ID of code release. - long build_date; // Date/time stamp when file was built. - long commands_offset; // Offset to attached commands in Pseudo Hdr format. - long loader_offset; // Offset to bootloader code. - long loader_code_address; // Start address of bootloader. - long loader_code_end; // Where bootloader code ends. - long loader_code_size; - long version_data_offset; // Offset were scrambled version data begins. - long version_data_size; // Size, in words, of scrambled version data. - long nDspImages; // Number of DSP images in file. + u32 version_id; // Version ID of this image format. + u32 package_id; // Package ID of code release. + u32 build_date; // Date/time stamp when file was built. + u32 commands_offset; // Offset to attached commands in Pseudo Hdr format. + u32 loader_offset; // Offset to bootloader code. + u32 loader_code_address; // Start address of bootloader. + u32 loader_code_end; // Where bootloader code ends. + u32 loader_code_size; + u32 version_data_offset; // Offset were scrambled version data begins. + u32 version_data_size; // Size, in words, of scrambled version data. + u32 nDspImages; // Number of DSP images in file. } __attribute__ ((packed)) DSP_FILE_HDR_5, *PDSP_FILE_HDR_5; typedef struct _DSP_IMAGE_INFO { - long coff_date; // Date/time when DSP Coff image was built. - long begin_offset; // Offset in file where image begins. - long end_offset; // Offset in file where image begins. - long run_address; // On chip Start address of DSP code. - long image_size; // Size of image. - long version; // Embedded version # of DSP code. + u32 coff_date; // Date/time when DSP Coff image was built. + u32 begin_offset; // Offset in file where image begins. + u32 end_offset; // Offset in file where image begins. + u32 run_address; // On chip Start address of DSP code. + u32 image_size; // Size of image. + u32 version; // Embedded version # of DSP code. } __attribute__ ((packed)) DSP_IMAGE_INFO, *PDSP_IMAGE_INFO; typedef struct _DSP_IMAGE_INFO_V6 { - long coff_date; // Date/time when DSP Coff image was built. - long begin_offset; // Offset in file where image begins. - long end_offset; // Offset in file where image begins. - long run_address; // On chip Start address of DSP code. - long image_size; // Size of image. - long version; // Embedded version # of DSP code. + u32 coff_date; // Date/time when DSP Coff image was built. + u32 begin_offset; // Offset in file where image begins. + u32 end_offset; // Offset in file where image begins. + u32 run_address; // On chip Start address of DSP code. + u32 image_size; // Size of image. + u32 version; // Embedded version # of DSP code. unsigned short checksum; // Dsp File checksum unsigned short pad1; } __attribute__ ((packed)) DSP_IMAGE_INFO_V6, *PDSP_IMAGE_INFO_V6; @@ -846,8 +846,8 @@ int card_download(struct net_device *dev, const u8 *pFileStart, UINT FileLength) break; case STATE_DONE_DWNLD: - if (((UINT) (pUcFile) - (UINT) pFileStart) >= - (UINT) FileLength) { + if (((unsigned long) (pUcFile) - (unsigned long) pFileStart) >= + (unsigned long) FileLength) { uiState = STATE_DONE_FILE; break; } @@ -901,11 +901,11 @@ int card_download(struct net_device *dev, const u8 *pFileStart, UINT FileLength) &info->prov_list); // Move to next entry if available pUcFile = - (UCHAR *) ((UINT) pUcFile + - (UINT) ((usHdrLength + 1) & 0xFFFFFFFE) + sizeof(PSEUDO_HDR)); - if ((UINT) (pUcFile) - - (UINT) (pFileStart) >= - (UINT) FileLength) { + (UCHAR *) ((unsigned long) pUcFile + + (unsigned long) ((usHdrLength + 1) & 0xFFFFFFFE) + sizeof(PSEUDO_HDR)); + if ((unsigned long) (pUcFile) - + (unsigned long) (pFileStart) >= + (unsigned long) FileLength) { uiState = STATE_DONE_FILE; } diff --git a/drivers/staging/hv/channel.c b/drivers/staging/hv/channel.c index 775a52a91222..f7ce7d2494b3 100644 --- a/drivers/staging/hv/channel.c +++ b/drivers/staging/hv/channel.c @@ -81,14 +81,14 @@ static void vmbus_setevent(struct vmbus_channel *channel) if (channel->offermsg.monitor_allocated) { /* Each u32 represents 32 channels */ - set_bit(channel->offermsg.child_relid & 31, + sync_set_bit(channel->offermsg.child_relid & 31, (unsigned long *) vmbus_connection.send_int_page + (channel->offermsg.child_relid >> 5)); monitorpage = vmbus_connection.monitor_pages; monitorpage++; /* Get the child to parent monitor page */ - set_bit(channel->monitor_bit, + sync_set_bit(channel->monitor_bit, (unsigned long *)&monitorpage->trigger_group [channel->monitor_grp].pending); @@ -104,7 +104,7 @@ static void VmbusChannelClearEvent(struct vmbus_channel *channel) if (Channel->offermsg.monitor_allocated) { /* Each u32 represents 32 channels */ - clear_bit(Channel->offermsg.child_relid & 31, + sync_clear_bit(Channel->offermsg.child_relid & 31, (unsigned long *)vmbus_connection.send_int_page + (Channel->offermsg.child_relid >> 5)); @@ -112,7 +112,7 @@ static void VmbusChannelClearEvent(struct vmbus_channel *channel) vmbus_connection.monitor_pages; monitorPage++; /* Get the child to parent monitor page */ - clear_bit(Channel->monitor_bit, + sync_clear_bit(Channel->monitor_bit, (unsigned long *)&monitorPage->trigger_group [Channel->monitor_grp].Pending); } diff --git a/drivers/staging/hv/connection.c b/drivers/staging/hv/connection.c index 44b203b95a22..afc8116e7aa4 100644 --- a/drivers/staging/hv/connection.c +++ b/drivers/staging/hv/connection.c @@ -296,7 +296,7 @@ void vmbus_on_event(unsigned long data) for (dword = 0; dword < maxdword; dword++) { if (recv_int_page[dword]) { for (bit = 0; bit < 32; bit++) { - if (test_and_clear_bit(bit, + if (sync_test_and_clear_bit(bit, (unsigned long *) &recv_int_page[dword])) { relid = (dword << 5) + bit; @@ -338,7 +338,7 @@ int vmbus_post_msg(void *buffer, size_t buflen) int vmbus_set_event(u32 child_relid) { /* Each u32 represents 32 channels */ - set_bit(child_relid & 31, + sync_set_bit(child_relid & 31, (unsigned long *)vmbus_connection.send_int_page + (child_relid >> 5)); diff --git a/drivers/staging/hv/hv_mouse.c b/drivers/staging/hv/hv_mouse.c index 9c6d4d24f889..118c7be22562 100644 --- a/drivers/staging/hv/hv_mouse.c +++ b/drivers/staging/hv/hv_mouse.c @@ -14,6 +14,7 @@ */ #include <linux/init.h> #include <linux/module.h> +#include <linux/delay.h> #include <linux/device.h> #include <linux/workqueue.h> #include <linux/sched.h> @@ -375,7 +376,7 @@ static void MousevscOnReceiveDeviceInfo(struct mousevsc_dev *InputDevice, struct desc->desc[0].wDescriptorLength); /* Send the ack */ - memset(&ack, sizeof(struct mousevsc_prt_msg), 0); + memset(&ack, 0, sizeof(struct mousevsc_prt_msg)); ack.type = PipeMessageData; ack.size = sizeof(struct synthhid_device_info_ack); @@ -596,7 +597,7 @@ static int MousevscConnectToVsp(struct hv_device *Device) /* * Now, initiate the vsc/vsp initialization protocol on the open channel */ - memset(request, sizeof(struct mousevsc_prt_msg), 0); + memset(request, 0, sizeof(struct mousevsc_prt_msg)); request->type = PipeMessageData; request->size = sizeof(struct synthhid_protocol_request); diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index 2d40f5f86b24..33973568214f 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -46,6 +46,7 @@ struct net_device_context { /* point back to our device context */ struct hv_device *device_ctx; unsigned long avail; + struct work_struct work; }; @@ -219,6 +220,7 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj, unsigned int status) { struct net_device *net = dev_get_drvdata(&device_obj->device); + struct net_device_context *ndev_ctx; if (!net) { DPRINT_ERR(NETVSC_DRV, "got link status but net device " @@ -230,6 +232,8 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj, netif_carrier_on(net); netif_wake_queue(net); netif_notify_peers(net); + ndev_ctx = netdev_priv(net); + schedule_work(&ndev_ctx->work); } else { netif_carrier_off(net); netif_stop_queue(net); @@ -328,6 +332,25 @@ static const struct net_device_ops device_ops = { .ndo_set_mac_address = eth_mac_addr, }; +/* + * Send GARP packet to network peers after migrations. + * After Quick Migration, the network is not immediately operational in the + * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add + * another netif_notify_peers() into a scheduled work, otherwise GARP packet + * will not be sent after quick migration, and cause network disconnection. + */ +static void netvsc_send_garp(struct work_struct *w) +{ + struct net_device_context *ndev_ctx; + struct net_device *net; + + msleep(20); + ndev_ctx = container_of(w, struct net_device_context, work); + net = dev_get_drvdata(&ndev_ctx->device_ctx->device); + netif_notify_peers(net); +} + + static int netvsc_probe(struct device *device) { struct hv_driver *drv = @@ -353,6 +376,7 @@ static int netvsc_probe(struct device *device) net_device_ctx->device_ctx = device_obj; net_device_ctx->avail = ring_size; dev_set_drvdata(device, net); + INIT_WORK(&net_device_ctx->work, netvsc_send_garp); /* Notify the netvsc driver of the new device */ ret = net_drv_obj->base.dev_add(device_obj, &device_info); diff --git a/drivers/staging/hv/tools/hv_kvp_daemon.c b/drivers/staging/hv/tools/hv_kvp_daemon.c index aa77a971aace..33f0f1c8ad73 100644 --- a/drivers/staging/hv/tools/hv_kvp_daemon.c +++ b/drivers/staging/hv/tools/hv_kvp_daemon.c @@ -102,22 +102,22 @@ static char kvp_send_buffer[4096]; static char kvp_recv_buffer[4096]; static struct sockaddr_nl addr; -static char os_name[100]; -static char os_major[50]; -static char os_minor[50]; -static char processor_arch[50]; -static char os_build[100]; +static char *os_name = ""; +static char *os_major = ""; +static char *os_minor = ""; +static char *processor_arch; +static char *os_build; static char *lic_version; +static struct utsname uts_buf; void kvp_get_os_info(void) { FILE *file; - char *eol; - struct utsname buf; + char *p, buf[512]; - uname(&buf); - strcpy(os_build, buf.release); - strcpy(processor_arch, buf.machine); + uname(&uts_buf); + os_build = uts_buf.release; + processor_arch= uts_buf.machine; file = fopen("/etc/SuSE-release", "r"); if (file != NULL) @@ -132,21 +132,46 @@ void kvp_get_os_info(void) /* * We don't have information about the os. */ - strcpy(os_name, "Linux"); - strcpy(os_major, "0"); - strcpy(os_minor, "0"); + os_name = uts_buf.sysname; return; kvp_osinfo_found: - fgets(os_name, 99, file); - eol = index(os_name, '\n'); - *eol = '\0'; - fgets(os_major, 49, file); - eol = index(os_major, '\n'); - *eol = '\0'; - fgets(os_minor, 49, file); - eol = index(os_minor, '\n'); - *eol = '\0'; + /* up to three lines */ + p = fgets(buf, sizeof(buf), file); + if (p) { + p = strchr(buf, '\n'); + if (p) + *p = '\0'; + p = strdup(buf); + if (!p) + goto done; + os_name = p; + + /* second line */ + p = fgets(buf, sizeof(buf), file); + if (p) { + p = strchr(buf, '\n'); + if (p) + *p = '\0'; + p = strdup(buf); + if (!p) + goto done; + os_major = p; + + /* third line */ + p = fgets(buf, sizeof(buf), file); + if (p) { + p = strchr(buf, '\n'); + if (p) + *p = '\0'; + p = strdup(buf); + if (p) + os_minor = p; + } + } + } + +done: fclose(file); return; } @@ -293,7 +318,7 @@ netlink_send(int fd, struct cn_msg *msg) return sendmsg(fd, &message, 0); } -main(void) +int main(void) { int fd, len, sock_opt; int error; @@ -301,9 +326,10 @@ main(void) struct pollfd pfd; struct nlmsghdr *incoming_msg; struct cn_msg *incoming_cn_msg; + struct hv_ku_msg *hv_msg; + char *p; char *key_value; char *key_name; - int key_index; daemon(1, 0); openlog("KVP", 0, LOG_USER); @@ -373,9 +399,10 @@ main(void) * Driver is registering with us; stash away the version * information. */ - lic_version = malloc(strlen(incoming_cn_msg->data) + 1); + p = (char *)incoming_cn_msg->data; + lic_version = malloc(strlen(p) + 1); if (lic_version) { - strcpy(lic_version, incoming_cn_msg->data); + strcpy(lic_version, p); syslog(LOG_INFO, "KVP LIC Version: %s", lic_version); } else { @@ -389,14 +416,11 @@ main(void) continue; } - key_index = - ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_index; - key_name = - ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_key; - key_value = - ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_value; + hv_msg = (struct hv_ku_msg *)incoming_cn_msg->data; + key_name = (char *)hv_msg->kvp_key; + key_value = (char *)hv_msg->kvp_value; - switch (key_index) { + switch (hv_msg->kvp_index) { case FullyQualifiedDomainName: kvp_get_domain_name(key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c index b473f468dd83..79089f85d903 100644 --- a/drivers/staging/hv/vmbus_drv.c +++ b/drivers/staging/hv/vmbus_drv.c @@ -254,7 +254,7 @@ static int vmbus_on_isr(void) event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT; /* Since we are a child, we only need to check bit 0 */ - if (test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) { + if (sync_test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) { DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]); ret |= 0x2; } diff --git a/drivers/staging/hv/vmbus_private.h b/drivers/staging/hv/vmbus_private.h index ca050a499b99..6f0d8df5e178 100644 --- a/drivers/staging/hv/vmbus_private.h +++ b/drivers/staging/hv/vmbus_private.h @@ -31,6 +31,7 @@ #include "channel_mgmt.h" #include "ring_buffer.h" #include <linux/list.h> +#include <asm/sync_bitops.h> /* diff --git a/drivers/staging/iio/imu/adis16400.h b/drivers/staging/iio/imu/adis16400.h index 7a127029e099..e328bcc5922f 100644 --- a/drivers/staging/iio/imu/adis16400.h +++ b/drivers/staging/iio/imu/adis16400.h @@ -17,7 +17,8 @@ #ifndef SPI_ADIS16400_H_ #define SPI_ADIS16400_H_ -#define ADIS16400_STARTUP_DELAY 220 /* ms */ +#define ADIS16400_STARTUP_DELAY 290 /* ms */ +#define ADIS16400_MTEST_DELAY 90 /* ms */ #define ADIS16400_READ_REG(a) a #define ADIS16400_WRITE_REG(a) ((a) | 0x80) diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c index cfb108a1545b..540bde69cc3b 100644 --- a/drivers/staging/iio/imu/adis16400_core.c +++ b/drivers/staging/iio/imu/adis16400_core.c @@ -6,6 +6,7 @@ * * Copyright (c) 2009 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> * Copyright (c) 2007 Jonathan Cameron <jic23@cam.ac.uk> + * Copyright (c) 2011 Analog Devices Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -93,7 +94,6 @@ static int adis16400_spi_write_reg_16(struct device *dev, .tx_buf = st->tx + 2, .bits_per_word = 8, .len = 2, - .cs_change = 1, }, }; @@ -137,7 +137,6 @@ static int adis16400_spi_read_reg_16(struct device *dev, .rx_buf = st->rx, .bits_per_word = 8, .len = 2, - .cs_change = 1, }, }; @@ -375,7 +374,7 @@ static int adis16400_self_test(struct device *dev) dev_err(dev, "problem starting self test"); goto err_ret; } - + msleep(ADIS16400_MTEST_DELAY); adis16400_check_status(dev); err_ret: @@ -471,10 +470,11 @@ static int adis16400_initial_setup(struct adis16400_state *st) if (ret) goto err_ret; - if (prod_id != ADIS16400_PRODUCT_ID_DEFAULT) + if ((prod_id & 0xF000) != ADIS16400_PRODUCT_ID_DEFAULT) dev_warn(dev, "unknown product id"); - printk(KERN_INFO DRIVER_NAME ": prod_id 0x%04x at CS%d (irq %d)\n", + + dev_info(dev, ": prod_id 0x%04x at CS%d (irq %d)\n", prod_id, st->us->chip_select, st->us->irq); /* use high spi speed if possible */ @@ -497,12 +497,12 @@ err_ret: _reg) static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_X, ADIS16400_XGYRO_OFF); -static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Y, ADIS16400_XGYRO_OFF); -static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Z, ADIS16400_XGYRO_OFF); +static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Y, ADIS16400_YGYRO_OFF); +static ADIS16400_DEV_ATTR_CALIBBIAS(GYRO_Z, ADIS16400_ZGYRO_OFF); static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_X, ADIS16400_XACCL_OFF); -static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Y, ADIS16400_XACCL_OFF); -static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Z, ADIS16400_XACCL_OFF); +static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Y, ADIS16400_YACCL_OFF); +static ADIS16400_DEV_ATTR_CALIBBIAS(ACCEL_Z, ADIS16400_ZACCL_OFF); static IIO_DEV_ATTR_IN_NAMED_RAW(0, supply, adis16400_read_14bit_signed, @@ -647,7 +647,7 @@ static int __devinit adis16400_probe(struct spi_device *spi) ret = iio_ring_buffer_register(st->indio_dev->ring, 0); if (ret) { - printk(KERN_ERR "failed to initialize the ring\n"); + dev_err(&spi->dev, "failed to initialize the ring\n"); goto error_unreg_ring_funcs; } diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c index 33293fba9bcc..da28cb4288af 100644 --- a/drivers/staging/iio/imu/adis16400_ring.c +++ b/drivers/staging/iio/imu/adis16400_ring.c @@ -122,12 +122,10 @@ static int adis16400_spi_read_burst(struct device *dev, u8 *rx) .tx_buf = st->tx, .bits_per_word = 8, .len = 2, - .cs_change = 0, }, { .rx_buf = rx, .bits_per_word = 8, .len = 24, - .cs_change = 1, }, }; @@ -162,9 +160,10 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s) work_trigger_to_ring); struct iio_ring_buffer *ring = st->indio_dev->ring; - int i = 0; + int i = 0, j; s16 *data; size_t datasize = ring->access.get_bytes_per_datum(ring); + unsigned long mask = ring->scan_mask; data = kmalloc(datasize , GFP_KERNEL); if (data == NULL) { @@ -174,9 +173,12 @@ static void adis16400_trigger_bh_to_ring(struct work_struct *work_s) if (ring->scan_count) if (adis16400_spi_read_burst(&st->indio_dev->dev, st->rx) >= 0) - for (; i < ring->scan_count; i++) + for (; i < ring->scan_count; i++) { + j = __ffs(mask); + mask &= ~(1 << j); data[i] = be16_to_cpup( - (__be16 *)&(st->rx[i*2])); + (__be16 *)&(st->rx[j*2])); + } /* Guaranteed to be aligned with 8 byte boundary */ if (ring->scan_timestamp) diff --git a/drivers/staging/memrar/Kconfig b/drivers/staging/memrar/Kconfig deleted file mode 100644 index cbeebc550904..000000000000 --- a/drivers/staging/memrar/Kconfig +++ /dev/null @@ -1,15 +0,0 @@ -config MRST_RAR_HANDLER - tristate "RAR handler driver for Intel Moorestown platform" - depends on RAR_REGISTER - ---help--- - This driver provides a memory management interface to - restricted access regions (RAR) available on the Intel - Moorestown platform. - - Once locked down, restricted access regions are only - accessible by specific hardware on the platform. The x86 - CPU is typically not one of those platforms. As such this - driver does not access RAR, and only provides a buffer - allocation/bookkeeping mechanism. - - If unsure, say N. diff --git a/drivers/staging/memrar/Makefile b/drivers/staging/memrar/Makefile deleted file mode 100644 index a3336c00cc5f..000000000000 --- a/drivers/staging/memrar/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -obj-$(CONFIG_MRST_RAR_HANDLER) += memrar.o -memrar-y := memrar_allocator.o memrar_handler.o diff --git a/drivers/staging/memrar/TODO b/drivers/staging/memrar/TODO deleted file mode 100644 index 435e09ba44c5..000000000000 --- a/drivers/staging/memrar/TODO +++ /dev/null @@ -1,43 +0,0 @@ -RAR Handler (memrar) Driver TODO Items -====================================== - -Maintainer: Eugene Epshteyn <eugene.epshteyn@intel.com> - -memrar.h --------- -1. This header exposes the driver's user space and kernel space - interfaces. It should be moved to <linux/rar/memrar.h>, or - something along those lines, when this memrar driver is moved out - of `staging'. - a. It would be ideal if staging/rar_register/rar_register.h was - moved to the same directory. - -memrar_allocator.[ch] ---------------------- -1. Address potential fragmentation issues with the memrar_allocator. - -2. Hide struct memrar_allocator details/fields. They need not be - exposed to the user. - a. Forward declare struct memrar_allocator. - b. Move all three struct definitions to `memrar_allocator.c' - source file. - c. Add a memrar_allocator_largest_free_area() function, or - something like that to get access to the value of the struct - memrar_allocator "largest_free_area" field. This allows the - struct memrar_allocator fields to be completely hidden from - the user. The memrar_handler code really only needs this for - statistic gathering on-demand. - d. Do the same for the "capacity" field as the - "largest_free_area" field. - -3. Move memrar_allocator.* to kernel `lib' directory since it is HW - neutral. - a. Alternatively, use lib/genalloc.c instead. - b. A kernel port of Doug Lea's malloc() implementation may also - be an option. - -memrar_handler.c ----------------- -1. Split user space interface (ioctl code) from core/kernel code, - e.g.: - memrar_handler.c -> memrar_core.c, memrar_user.c diff --git a/drivers/staging/memrar/memrar-abi b/drivers/staging/memrar/memrar-abi deleted file mode 100644 index c23fc996a435..000000000000 --- a/drivers/staging/memrar/memrar-abi +++ /dev/null @@ -1,89 +0,0 @@ -What: /dev/memrar -Date: March 2010 -KernelVersion: 2.6.34 -Contact: Eugene Epshteyn <eugene.epshteyn@intel.com> -Description: The Intel Moorestown Restricted Access Region (RAR) - Handler driver exposes an ioctl() based interface that - allows a user to reserve and release blocks of RAR - memory. - - Note: A sysfs based one was not appropriate for the - RAR handler's usage model. - - ========================================================= - ioctl() Requests - ========================================================= - RAR_HANDLER_RESERVE - ------------------- - Description: Reserve RAR block. - Type: struct RAR_block_info - Direction: in/out - Errors: EINVAL (invalid RAR type or size) - ENOMEM (not enough RAR memory) - - RAR_HANDLER_STAT - ---------------- - Description: Get RAR statistics. - Type: struct RAR_stat - Direction: in/out - Errors: EINVAL (invalid RAR type) - - RAR_HANDLER_RELEASE - ------------------- - Description: Release previously reserved RAR block. - Type: 32 bit unsigned integer - (e.g. uint32_t), i.e the RAR "handle". - Direction: in - Errors: EINVAL (invalid RAR handle) - - - ========================================================= - ioctl() Request Parameter Types - ========================================================= - The structures referred to above are defined as - follows: - - /** - * struct RAR_block_info - user space struct that - * describes RAR buffer - * @type: Type of RAR memory (e.g., - * RAR_TYPE_VIDEO or RAR_TYPE_AUDIO) [in] - * @size: Requested size of a block in bytes to - * be reserved in RAR. [in] - * @handle: Handle that can be used to refer to - * reserved block. [out] - * - * This is the basic structure exposed to the user - * space that describes a given RAR buffer. It used - * as the parameter for the RAR_HANDLER_RESERVE ioctl. - * The buffer's underlying bus address is not exposed - * to the user. User space code refers to the buffer - * entirely by "handle". - */ - struct RAR_block_info { - __u32 type; - __u32 size; - __u32 handle; - }; - - /** - * struct RAR_stat - RAR statistics structure - * @type: Type of RAR memory (e.g., - * RAR_TYPE_VIDEO or - * RAR_TYPE_AUDIO) [in] - * @capacity: Total size of RAR memory - * region. [out] - * @largest_block_size: Size of the largest reservable - * block. [out] - * - * This structure is used for RAR_HANDLER_STAT ioctl. - */ - struct RAR_stat { - __u32 type; - __u32 capacity; - __u32 largest_block_size; - }; - - Lastly, the RAR_HANDLER_RELEASE ioctl expects a - "handle" to the RAR block of memory. It is a 32 bit - unsigned integer. diff --git a/drivers/staging/memrar/memrar.h b/drivers/staging/memrar/memrar.h deleted file mode 100644 index 0feb73b94c91..000000000000 --- a/drivers/staging/memrar/memrar.h +++ /dev/null @@ -1,174 +0,0 @@ -/* - * RAR Handler (/dev/memrar) internal driver API. - * Copyright (C) 2010 Intel Corporation. All rights reserved. - * - * 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 published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * The full GNU General Public License is included in this - * distribution in the file called COPYING. - */ - - -#ifndef _MEMRAR_H -#define _MEMRAR_H - -#include <linux/ioctl.h> -#include <linux/types.h> - - -/** - * struct RAR_stat - RAR statistics structure - * @type: Type of RAR memory (e.g., audio vs. video) - * @capacity: Total size of RAR memory region. - * @largest_block_size: Size of the largest reservable block. - * - * This structure is used for RAR_HANDLER_STAT ioctl and for the - * RAR_get_stat() user space wrapper function. - */ -struct RAR_stat { - __u32 type; - __u32 capacity; - __u32 largest_block_size; -}; - - -/** - * struct RAR_block_info - user space struct that describes RAR buffer - * @type: Type of RAR memory (e.g., audio vs. video) - * @size: Requested size of a block to be reserved in RAR. - * @handle: Handle that can be used to refer to reserved block. - * - * This is the basic structure exposed to the user space that - * describes a given RAR buffer. The buffer's underlying bus address - * is not exposed to the user. User space code refers to the buffer - * entirely by "handle". - */ -struct RAR_block_info { - __u32 type; - __u32 size; - __u32 handle; -}; - - -#define RAR_IOCTL_BASE 0xE0 - -/* Reserve RAR block. */ -#define RAR_HANDLER_RESERVE _IOWR(RAR_IOCTL_BASE, 0x00, struct RAR_block_info) - -/* Release previously reserved RAR block. */ -#define RAR_HANDLER_RELEASE _IOW(RAR_IOCTL_BASE, 0x01, __u32) - -/* Get RAR stats. */ -#define RAR_HANDLER_STAT _IOWR(RAR_IOCTL_BASE, 0x02, struct RAR_stat) - - -#ifdef __KERNEL__ - -/* -------------------------------------------------------------- */ -/* Kernel Side RAR Handler Interface */ -/* -------------------------------------------------------------- */ - -/** - * struct RAR_buffer - kernel space struct that describes RAR buffer - * @info: structure containing base RAR buffer information - * @bus_address: buffer bus address - * - * Structure that contains all information related to a given block of - * memory in RAR. It is generally only used when retrieving RAR - * related bus addresses. - * - * Note: This structure is used only by RAR-enabled drivers, and is - * not intended to be exposed to the user space. - */ -struct RAR_buffer { - struct RAR_block_info info; - dma_addr_t bus_address; -}; - -#if defined(CONFIG_MRST_RAR_HANDLER) -/** - * rar_reserve() - reserve RAR buffers - * @buffers: array of RAR_buffers where type and size of buffers to - * reserve are passed in, handle and bus address are - * passed out - * @count: number of RAR_buffers in the "buffers" array - * - * This function will reserve buffers in the restricted access regions - * of given types. - * - * It returns the number of successfully reserved buffers. Successful - * buffer reservations will have the corresponding bus_address field - * set to a non-zero value in the given buffers vector. - */ -extern size_t rar_reserve(struct RAR_buffer *buffers, - size_t count); - -/** - * rar_release() - release RAR buffers - * @buffers: array of RAR_buffers where handles to buffers to be - * released are passed in - * @count: number of RAR_buffers in the "buffers" array - * - * This function will release RAR buffers that were retrieved through - * a call to rar_reserve() or rar_handle_to_bus() by decrementing the - * reference count. The RAR buffer will be reclaimed when the - * reference count drops to zero. - * - * It returns the number of successfully released buffers. Successful - * releases will have their handle field set to zero in the given - * buffers vector. - */ -extern size_t rar_release(struct RAR_buffer *buffers, - size_t count); - -/** - * rar_handle_to_bus() - convert a vector of RAR handles to bus addresses - * @buffers: array of RAR_buffers containing handles to be - * converted to bus_addresses - * @count: number of RAR_buffers in the "buffers" array - - * This function will retrieve the RAR buffer bus addresses, type and - * size corresponding to the RAR handles provided in the buffers - * vector. - * - * It returns the number of successfully converted buffers. The bus - * address will be set to 0 for unrecognized handles. - * - * The reference count for each corresponding buffer in RAR will be - * incremented. Call rar_release() when done with the buffers. - */ -extern size_t rar_handle_to_bus(struct RAR_buffer *buffers, - size_t count); - -#else - -extern inline size_t rar_reserve(struct RAR_buffer *buffers, size_t count) -{ - return 0; -} - -extern inline size_t rar_release(struct RAR_buffer *buffers, size_t count) -{ - return 0; -} - -extern inline size_t rar_handle_to_bus(struct RAR_buffer *buffers, - size_t count) -{ - return 0; -} - -#endif /* MRST_RAR_HANDLER */ -#endif /* __KERNEL__ */ - -#endif /* _MEMRAR_H */ diff --git a/drivers/staging/memrar/memrar_allocator.c b/drivers/staging/memrar/memrar_allocator.c deleted file mode 100644 index a4f8c5846a00..000000000000 --- a/drivers/staging/memrar/memrar_allocator.c +++ /dev/null @@ -1,432 +0,0 @@ -/* - * memrar_allocator 1.0: An allocator for Intel RAR. - * - * Copyright (C) 2010 Intel Corporation. All rights reserved. - * - * 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 published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * The full GNU General Public License is included in this - * distribution in the file called COPYING. - * - * - * ------------------------------------------------------------------ - * - * This simple allocator implementation provides a - * malloc()/free()-like interface for reserving space within a - * previously reserved block of memory. It is not specific to - * any hardware, nor is it coupled with the lower level paging - * mechanism. - * - * The primary goal of this implementation is to provide a means - * to partition an arbitrary block of memory without actually - * accessing the memory or incurring any hardware side-effects - * (e.g. paging). It is, in effect, a bookkeeping mechanism for - * buffers. - */ - - -#include "memrar_allocator.h" -#include <linux/slab.h> -#include <linux/bug.h> -#include <linux/kernel.h> - - -struct memrar_allocator *memrar_create_allocator(unsigned long base, - size_t capacity, - size_t block_size) -{ - struct memrar_allocator *allocator = NULL; - struct memrar_address_ranges *first_node = NULL; - - /* - * Make sure the base address is aligned on a block_size - * boundary. - * - * @todo Is this necessary? - */ - /* base = ALIGN(base, block_size); */ - - /* Validate parameters. - * - * Make sure we can allocate the entire memory space. Zero - * capacity or block size are obviously invalid. - */ - if (base == 0 - || capacity == 0 - || block_size == 0 - || ULONG_MAX - capacity < base - || capacity < block_size) - return allocator; - - /* - * There isn't much point in creating a memory allocator that - * is only capable of holding one block but we'll allow it, - * and issue a diagnostic. - */ - WARN(capacity < block_size * 2, - "memrar: Only one block available to allocator.\n"); - - allocator = kmalloc(sizeof(*allocator), GFP_KERNEL); - - if (allocator == NULL) - return allocator; - - mutex_init(&allocator->lock); - allocator->base = base; - - /* Round the capacity down to a multiple of block_size. */ - allocator->capacity = (capacity / block_size) * block_size; - - allocator->block_size = block_size; - - allocator->largest_free_area = allocator->capacity; - - /* Initialize the handle and free lists. */ - INIT_LIST_HEAD(&allocator->allocated_list.list); - INIT_LIST_HEAD(&allocator->free_list.list); - - first_node = kmalloc(sizeof(*first_node), GFP_KERNEL); - if (first_node == NULL) { - kfree(allocator); - allocator = NULL; - } else { - /* Full range of blocks is available. */ - first_node->range.begin = base; - first_node->range.end = base + allocator->capacity; - list_add(&first_node->list, - &allocator->free_list.list); - } - - return allocator; -} - -void memrar_destroy_allocator(struct memrar_allocator *allocator) -{ - /* - * Assume that the memory allocator lock isn't held at this - * point in time. Caller must ensure that. - */ - - struct memrar_address_ranges *pos = NULL; - struct memrar_address_ranges *n = NULL; - - if (allocator == NULL) - return; - - mutex_lock(&allocator->lock); - - /* Reclaim free list resources. */ - list_for_each_entry_safe(pos, - n, - &allocator->free_list.list, - list) { - list_del(&pos->list); - kfree(pos); - } - - mutex_unlock(&allocator->lock); - - kfree(allocator); -} - -unsigned long memrar_allocator_alloc(struct memrar_allocator *allocator, - size_t size) -{ - struct memrar_address_ranges *pos = NULL; - - size_t num_blocks; - unsigned long reserved_bytes; - - /* - * Address of allocated buffer. We assume that zero is not a - * valid address. - */ - unsigned long addr = 0; - - if (allocator == NULL || size == 0) - return addr; - - /* Reserve enough blocks to hold the amount of bytes requested. */ - num_blocks = DIV_ROUND_UP(size, allocator->block_size); - - reserved_bytes = num_blocks * allocator->block_size; - - mutex_lock(&allocator->lock); - - if (reserved_bytes > allocator->largest_free_area) { - mutex_unlock(&allocator->lock); - return addr; - } - - /* - * Iterate through the free list to find a suitably sized - * range of free contiguous memory blocks. - * - * We also take the opportunity to reset the size of the - * largest free area size statistic. - */ - list_for_each_entry(pos, &allocator->free_list.list, list) { - struct memrar_address_range * const fr = &pos->range; - size_t const curr_size = fr->end - fr->begin; - - if (curr_size >= reserved_bytes && addr == 0) { - struct memrar_address_range *range = NULL; - struct memrar_address_ranges * const new_node = - kmalloc(sizeof(*new_node), GFP_KERNEL); - - if (new_node == NULL) - break; - - list_add(&new_node->list, - &allocator->allocated_list.list); - - /* - * Carve out area of memory from end of free - * range. - */ - range = &new_node->range; - range->end = fr->end; - fr->end -= reserved_bytes; - range->begin = fr->end; - addr = range->begin; - - /* - * Check if largest area has decreased in - * size. We'll need to continue scanning for - * the next largest area if it has. - */ - if (curr_size == allocator->largest_free_area) - allocator->largest_free_area -= - reserved_bytes; - else - break; - } - - /* - * Reset largest free area size statistic as needed, - * but only if we've actually allocated memory. - */ - if (addr != 0 - && curr_size > allocator->largest_free_area) { - allocator->largest_free_area = curr_size; - break; - } - } - - mutex_unlock(&allocator->lock); - - return addr; -} - -long memrar_allocator_free(struct memrar_allocator *allocator, - unsigned long addr) -{ - struct list_head *pos = NULL; - struct list_head *tmp = NULL; - struct list_head *dst = NULL; - - struct memrar_address_ranges *allocated = NULL; - struct memrar_address_range const *handle = NULL; - - unsigned long old_end = 0; - unsigned long new_chunk_size = 0; - - if (allocator == NULL) - return -EINVAL; - - if (addr == 0) - return 0; /* Ignore "free(0)". */ - - mutex_lock(&allocator->lock); - - /* Find the corresponding handle. */ - list_for_each_entry(allocated, - &allocator->allocated_list.list, - list) { - if (allocated->range.begin == addr) { - handle = &allocated->range; - break; - } - } - - /* No such buffer created by this allocator. */ - if (handle == NULL) { - mutex_unlock(&allocator->lock); - return -EFAULT; - } - - /* - * Coalesce adjacent chunks of memory if possible. - * - * @note This isn't full blown coalescing since we're only - * coalescing at most three chunks of memory. - */ - list_for_each_safe(pos, tmp, &allocator->free_list.list) { - /* @todo O(n) performance. Optimize. */ - - struct memrar_address_range * const chunk = - &list_entry(pos, - struct memrar_address_ranges, - list)->range; - - /* Extend size of existing free adjacent chunk. */ - if (chunk->end == handle->begin) { - /* - * Chunk "less than" than the one we're - * freeing is adjacent. - * - * Before: - * - * +-----+------+ - * |chunk|handle| - * +-----+------+ - * - * After: - * - * +------------+ - * | chunk | - * +------------+ - */ - - struct memrar_address_ranges const * const next = - list_entry(pos->next, - struct memrar_address_ranges, - list); - - chunk->end = handle->end; - - /* - * Now check if next free chunk is adjacent to - * the current extended free chunk. - * - * Before: - * - * +------------+----+ - * | chunk |next| - * +------------+----+ - * - * After: - * - * +-----------------+ - * | chunk | - * +-----------------+ - */ - if (!list_is_singular(pos) - && chunk->end == next->range.begin) { - chunk->end = next->range.end; - list_del(pos->next); - kfree(next); - } - - list_del(&allocated->list); - - new_chunk_size = chunk->end - chunk->begin; - - goto exit_memrar_free; - - } else if (handle->end == chunk->begin) { - /* - * Chunk "greater than" than the one we're - * freeing is adjacent. - * - * +------+-----+ - * |handle|chunk| - * +------+-----+ - * - * After: - * - * +------------+ - * | chunk | - * +------------+ - */ - - struct memrar_address_ranges const * const prev = - list_entry(pos->prev, - struct memrar_address_ranges, - list); - - chunk->begin = handle->begin; - - /* - * Now check if previous free chunk is - * adjacent to the current extended free - * chunk. - * - * - * Before: - * - * +----+------------+ - * |prev| chunk | - * +----+------------+ - * - * After: - * - * +-----------------+ - * | chunk | - * +-----------------+ - */ - if (!list_is_singular(pos) - && prev->range.end == chunk->begin) { - chunk->begin = prev->range.begin; - list_del(pos->prev); - kfree(prev); - } - - list_del(&allocated->list); - - new_chunk_size = chunk->end - chunk->begin; - - goto exit_memrar_free; - - } else if (chunk->end < handle->begin - && chunk->end > old_end) { - /* Keep track of where the entry could be - * potentially moved from the "allocated" list - * to the "free" list if coalescing doesn't - * occur, making sure the "free" list remains - * sorted. - */ - old_end = chunk->end; - dst = pos; - } - } - - /* - * Nothing to coalesce. - * - * Move the entry from the "allocated" list to the "free" - * list. - */ - list_move(&allocated->list, dst); - new_chunk_size = handle->end - handle->begin; - allocated = NULL; - -exit_memrar_free: - - if (new_chunk_size > allocator->largest_free_area) - allocator->largest_free_area = new_chunk_size; - - mutex_unlock(&allocator->lock); - - kfree(allocated); - - return 0; -} - - - -/* - Local Variables: - c-file-style: "linux" - End: -*/ diff --git a/drivers/staging/memrar/memrar_allocator.h b/drivers/staging/memrar/memrar_allocator.h deleted file mode 100644 index 0b80dead710f..000000000000 --- a/drivers/staging/memrar/memrar_allocator.h +++ /dev/null @@ -1,149 +0,0 @@ -/* - * Copyright (C) 2010 Intel Corporation. All rights reserved. - * - * 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 published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * The full GNU General Public License is included in this - * distribution in the file called COPYING. - */ - -#ifndef MEMRAR_ALLOCATOR_H -#define MEMRAR_ALLOCATOR_H - - -#include <linux/mutex.h> -#include <linux/list.h> -#include <linux/types.h> -#include <linux/kernel.h> - - -/** - * struct memrar_address_range - struct that describes a memory range - * @begin: Beginning of available address range. - * @end: End of available address range, one past the end, - * i.e. [begin, end). - */ -struct memrar_address_range { -/* private: internal use only */ - unsigned long begin; - unsigned long end; -}; - -/** - * struct memrar_address_ranges - list of areas of memory. - * @list: Linked list of address ranges. - * @range: Memory address range corresponding to given list node. - */ -struct memrar_address_ranges { -/* private: internal use only */ - struct list_head list; - struct memrar_address_range range; -}; - -/** - * struct memrar_allocator - encapsulation of the memory allocator state - * @lock: Lock used to synchronize access to the memory - * allocator state. - * @base: Base (start) address of the allocator memory - * space. - * @capacity: Size of the allocator memory space in bytes. - * @block_size: The size in bytes of individual blocks within - * the allocator memory space. - * @largest_free_area: Largest free area of memory in the allocator - * in bytes. - * @allocated_list: List of allocated memory block address - * ranges. - * @free_list: List of free address ranges. - * - * This structure contains all memory allocator state, including the - * base address, capacity, free list, lock, etc. - */ -struct memrar_allocator { -/* private: internal use only */ - struct mutex lock; - unsigned long base; - size_t capacity; - size_t block_size; - size_t largest_free_area; - struct memrar_address_ranges allocated_list; - struct memrar_address_ranges free_list; -}; - -/** - * memrar_create_allocator() - create a memory allocator - * @base: Address at which the memory allocator begins. - * @capacity: Desired size of the memory allocator. This value must - * be larger than the block_size, ideally more than twice - * as large since there wouldn't be much point in using a - * memory allocator otherwise. - * @block_size: The size of individual blocks within the memory - * allocator. This value must smaller than the - * capacity. - * - * Create a memory allocator with the given capacity and block size. - * The capacity will be reduced to be a multiple of the block size, if - * necessary. - * - * Returns an instance of the memory allocator, if creation succeeds, - * otherwise zero if creation fails. Failure may occur if not enough - * kernel memory exists to create the memrar_allocator instance - * itself, or if the capacity and block_size arguments are not - * compatible or make sense. - */ -struct memrar_allocator *memrar_create_allocator(unsigned long base, - size_t capacity, - size_t block_size); - -/** - * memrar_destroy_allocator() - destroy allocator - * @allocator: The allocator being destroyed. - * - * Reclaim resources held by the memory allocator. The caller must - * explicitly free all memory reserved by memrar_allocator_alloc() - * prior to calling this function. Otherwise leaks will occur. - */ -void memrar_destroy_allocator(struct memrar_allocator *allocator); - -/** - * memrar_allocator_alloc() - reserve an area of memory of given size - * @allocator: The allocator instance being used to reserve buffer. - * @size: The size in bytes of the buffer to allocate. - * - * This functions reserves an area of memory managed by the given - * allocator. It returns zero if allocation was not possible. - * Failure may occur if the allocator no longer has space available. - */ -unsigned long memrar_allocator_alloc(struct memrar_allocator *allocator, - size_t size); - -/** - * memrar_allocator_free() - release buffer starting at given address - * @allocator: The allocator instance being used to release the buffer. - * @address: The address of the buffer being released. - * - * Release an area of memory starting at the given address. Failure - * could occur if the given address is not in the address space - * managed by the allocator. Returns zero on success or an errno - * (negative value) on failure. - */ -long memrar_allocator_free(struct memrar_allocator *allocator, - unsigned long address); - -#endif /* MEMRAR_ALLOCATOR_H */ - - -/* - Local Variables: - c-file-style: "linux" - End: -*/ diff --git a/drivers/staging/memrar/memrar_handler.c b/drivers/staging/memrar/memrar_handler.c deleted file mode 100644 index 1d9399d6f10f..000000000000 --- a/drivers/staging/memrar/memrar_handler.c +++ /dev/null @@ -1,1007 +0,0 @@ -/* - * memrar_handler 1.0: An Intel restricted access region handler device - * - * Copyright (C) 2010 Intel Corporation. All rights reserved. - * - * 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 published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * The full GNU General Public License is included in this - * distribution in the file called COPYING. - * - * ------------------------------------------------------------------- - * - * Moorestown restricted access regions (RAR) provide isolated - * areas of main memory that are only acceessible by authorized - * devices. - * - * The Intel Moorestown RAR handler module exposes a kernel space - * RAR memory management mechanism. It is essentially a - * RAR-specific allocator. - * - * Besides providing RAR buffer management, the RAR handler also - * behaves in many ways like an OS virtual memory manager. For - * example, the RAR "handles" created by the RAR handler are - * analogous to user space virtual addresses. - * - * RAR memory itself is never accessed directly by the RAR - * handler. - */ - -#include <linux/miscdevice.h> -#include <linux/fs.h> -#include <linux/slab.h> -#include <linux/kref.h> -#include <linux/mutex.h> -#include <linux/kernel.h> -#include <linux/uaccess.h> -#include <linux/mm.h> -#include <linux/ioport.h> -#include <linux/io.h> -#include <linux/rar_register.h> - -#include "memrar.h" -#include "memrar_allocator.h" - - -#define MEMRAR_VER "1.0" - -/* - * Moorestown supports three restricted access regions. - * - * We only care about the first two, video and audio. The third, - * reserved for Chaabi and the P-unit, will be handled by their - * respective drivers. - */ -#define MRST_NUM_RAR 2 - -/* ---------------- -------------------- ------------------- */ - -/** - * struct memrar_buffer_info - struct that keeps track of all RAR buffers - * @list: Linked list of memrar_buffer_info objects. - * @buffer: Core RAR buffer information. - * @refcount: Reference count. - * @owner: File handle corresponding to process that reserved the - * block of memory in RAR. This will be zero for buffers - * allocated by other drivers instead of by a user space - * process. - * - * This structure encapsulates a link list of RAR buffers, as well as - * other characteristics specific to a given list node, such as the - * reference count on the corresponding RAR buffer. - */ -struct memrar_buffer_info { - struct list_head list; - struct RAR_buffer buffer; - struct kref refcount; - struct file *owner; -}; - -/** - * struct memrar_rar_info - characteristics of a given RAR - * @base: Base bus address of the RAR. - * @length: Length of the RAR. - * @iobase: Virtual address of RAR mapped into kernel. - * @allocator: Allocator associated with the RAR. Note the allocator - * "capacity" may be smaller than the RAR length if the - * length is not a multiple of the configured allocator - * block size. - * @buffers: Table that keeps track of all reserved RAR buffers. - * @lock: Lock used to synchronize access to RAR-specific data - * structures. - * - * Each RAR has an associated memrar_rar_info structure that describes - * where in memory the RAR is located, how large it is, and a list of - * reserved RAR buffers inside that RAR. Each RAR also has a mutex - * associated with it to reduce lock contention when operations on - * multiple RARs are performed in parallel. - */ -struct memrar_rar_info { - dma_addr_t base; - unsigned long length; - void __iomem *iobase; - struct memrar_allocator *allocator; - struct memrar_buffer_info buffers; - struct mutex lock; - int allocated; /* True if we own this RAR */ -}; - -/* - * Array of RAR characteristics. - */ -static struct memrar_rar_info memrars[MRST_NUM_RAR]; - -/* ---------------- -------------------- ------------------- */ - -/* Validate RAR type. */ -static inline int memrar_is_valid_rar_type(u32 type) -{ - return type == RAR_TYPE_VIDEO || type == RAR_TYPE_AUDIO; -} - -/* Check if an address/handle falls with the given RAR memory range. */ -static inline int memrar_handle_in_range(struct memrar_rar_info *rar, - u32 vaddr) -{ - unsigned long const iobase = (unsigned long) (rar->iobase); - return (vaddr >= iobase && vaddr < iobase + rar->length); -} - -/* Retrieve RAR information associated with the given handle. */ -static struct memrar_rar_info *memrar_get_rar_info(u32 vaddr) -{ - int i; - for (i = 0; i < MRST_NUM_RAR; ++i) { - struct memrar_rar_info * const rar = &memrars[i]; - if (memrar_handle_in_range(rar, vaddr)) - return rar; - } - - return NULL; -} - -/** - * memrar_get_bus address - handle to bus address - * - * Retrieve bus address from given handle. - * - * Returns address corresponding to given handle. Zero if handle is - * invalid. - */ -static dma_addr_t memrar_get_bus_address( - struct memrar_rar_info *rar, - u32 vaddr) -{ - unsigned long const iobase = (unsigned long) (rar->iobase); - - if (!memrar_handle_in_range(rar, vaddr)) - return 0; - - /* - * An assumption is made that the virtual address offset is - * the same as the bus address offset, at least based on the - * way this driver is implemented. For example, vaddr + 2 == - * baddr + 2. - * - * @todo Is that a valid assumption? - */ - return rar->base + (vaddr - iobase); -} - -/** - * memrar_get_physical_address - handle to physical address - * - * Retrieve physical address from given handle. - * - * Returns address corresponding to given handle. Zero if handle is - * invalid. - */ -static dma_addr_t memrar_get_physical_address( - struct memrar_rar_info *rar, - u32 vaddr) -{ - /* - * @todo This assumes that the bus address and physical - * address are the same. That is true for Moorestown - * but not necessarily on other platforms. This - * deficiency should be addressed at some point. - */ - return memrar_get_bus_address(rar, vaddr); -} - -/** - * memrar_release_block - release a block to the pool - * @kref: kref of block - * - * Core block release code. A node has hit zero references so can - * be released and the lists must be updated. - * - * Note: This code removes the node from a list. Make sure any list - * iteration is performed using list_for_each_safe(). - */ -static void memrar_release_block_i(struct kref *ref) -{ - /* - * Last reference is being released. Remove from the table, - * and reclaim resources. - */ - - struct memrar_buffer_info * const node = - container_of(ref, struct memrar_buffer_info, refcount); - - struct RAR_block_info * const user_info = - &node->buffer.info; - - struct memrar_allocator * const allocator = - memrars[user_info->type].allocator; - - list_del(&node->list); - - memrar_allocator_free(allocator, user_info->handle); - - kfree(node); -} - -/** - * memrar_init_rar_resources - configure a RAR - * @rarnum: rar that has been allocated - * @devname: name of our device - * - * Initialize RAR parameters, such as bus addresses, etc and make - * the resource accessible. - */ -static int memrar_init_rar_resources(int rarnum, char const *devname) -{ - /* ---- Sanity Checks ---- - * 1. RAR bus addresses in both Lincroft and Langwell RAR - * registers should be the same. - * a. There's no way we can do this through IA. - * - * 2. Secure device ID in Langwell RAR registers should be set - * appropriately, e.g. only LPE DMA for the audio RAR, and - * security for the other Langwell based RAR registers. - * a. There's no way we can do this through IA. - * - * 3. Audio and video RAR registers and RAR access should be - * locked down. If not, enable RAR access control. Except - * for debugging purposes, there is no reason for them to - * be unlocked. - * a. We can only do this for the Lincroft (IA) side. - * - * @todo Should the RAR handler driver even be aware of audio - * and video RAR settings? - */ - - /* - * RAR buffer block size. - * - * We choose it to be the size of a page to simplify the - * /dev/memrar mmap() implementation and usage. Otherwise - * paging is not involved once an RAR is locked down. - */ - static size_t const RAR_BLOCK_SIZE = PAGE_SIZE; - - dma_addr_t low, high; - struct memrar_rar_info * const rar = &memrars[rarnum]; - - BUG_ON(MRST_NUM_RAR != ARRAY_SIZE(memrars)); - BUG_ON(!memrar_is_valid_rar_type(rarnum)); - BUG_ON(rar->allocated); - - if (rar_get_address(rarnum, &low, &high) != 0) - /* No RAR is available. */ - return -ENODEV; - - if (low == 0 || high == 0) { - rar->base = 0; - rar->length = 0; - rar->iobase = NULL; - rar->allocator = NULL; - return -ENOSPC; - } - - /* - * @todo Verify that LNC and LNW RAR register contents - * addresses, security, etc are compatible and - * consistent). - */ - - rar->length = high - low + 1; - - /* Claim RAR memory as our own. */ - if (request_mem_region(low, rar->length, devname) == NULL) { - rar->length = 0; - pr_err("%s: Unable to claim RAR[%d] memory.\n", - devname, rarnum); - pr_err("%s: RAR[%d] disabled.\n", devname, rarnum); - return -EBUSY; - } - - rar->base = low; - - /* - * Now map it into the kernel address space. - * - * Note that the RAR memory may only be accessed by IA - * when debugging. Otherwise attempts to access the - * RAR memory when it is locked down will result in - * behavior similar to writing to /dev/null and - * reading from /dev/zero. This behavior is enforced - * by the hardware. Even if we don't access the - * memory, mapping it into the kernel provides us with - * a convenient RAR handle to bus address mapping. - */ - rar->iobase = ioremap_nocache(rar->base, rar->length); - if (rar->iobase == NULL) { - pr_err("%s: Unable to map RAR memory.\n", devname); - release_mem_region(low, rar->length); - return -ENOMEM; - } - - /* Initialize corresponding memory allocator. */ - rar->allocator = memrar_create_allocator((unsigned long) rar->iobase, - rar->length, RAR_BLOCK_SIZE); - if (rar->allocator == NULL) { - iounmap(rar->iobase); - release_mem_region(low, rar->length); - return -ENOMEM; - } - - pr_info("%s: BRAR[%d] bus address range = [0x%lx, 0x%lx]\n", - devname, rarnum, (unsigned long) low, (unsigned long) high); - - pr_info("%s: BRAR[%d] size = %zu KiB\n", - devname, rarnum, rar->allocator->capacity / 1024); - - rar->allocated = 1; - return 0; -} - -/** - * memrar_fini_rar_resources - free up RAR resources - * - * Finalize RAR resources. Free up the resource tables, hand the memory - * back to the kernel, unmap the device and release the address space. - */ -static void memrar_fini_rar_resources(void) -{ - int z; - struct memrar_buffer_info *pos; - struct memrar_buffer_info *tmp; - - /* - * @todo Do we need to hold a lock at this point in time? - * (module initialization failure or exit?) - */ - - for (z = MRST_NUM_RAR; z-- != 0; ) { - struct memrar_rar_info * const rar = &memrars[z]; - - if (!rar->allocated) - continue; - - /* Clean up remaining resources. */ - - list_for_each_entry_safe(pos, - tmp, - &rar->buffers.list, - list) { - kref_put(&pos->refcount, memrar_release_block_i); - } - - memrar_destroy_allocator(rar->allocator); - rar->allocator = NULL; - - iounmap(rar->iobase); - release_mem_region(rar->base, rar->length); - - rar->iobase = NULL; - rar->base = 0; - rar->length = 0; - - unregister_rar(z); - } -} - -/** - * memrar_reserve_block - handle an allocation request - * @request: block being requested - * @filp: owner it is tied to - * - * Allocate a block of the requested RAR. If successful return the - * request object filled in and zero, if not report an error code - */ - -static long memrar_reserve_block(struct RAR_buffer *request, - struct file *filp) -{ - struct RAR_block_info * const rinfo = &request->info; - struct RAR_buffer *buffer; - struct memrar_buffer_info *buffer_info; - u32 handle; - struct memrar_rar_info *rar = NULL; - - /* Prevent array overflow. */ - if (!memrar_is_valid_rar_type(rinfo->type)) - return -EINVAL; - - rar = &memrars[rinfo->type]; - if (!rar->allocated) - return -ENODEV; - - /* Reserve memory in RAR. */ - handle = memrar_allocator_alloc(rar->allocator, rinfo->size); - if (handle == 0) - return -ENOMEM; - - buffer_info = kmalloc(sizeof(*buffer_info), GFP_KERNEL); - - if (buffer_info == NULL) { - memrar_allocator_free(rar->allocator, handle); - return -ENOMEM; - } - - buffer = &buffer_info->buffer; - buffer->info.type = rinfo->type; - buffer->info.size = rinfo->size; - - /* Memory handle corresponding to the bus address. */ - buffer->info.handle = handle; - buffer->bus_address = memrar_get_bus_address(rar, handle); - - /* - * Keep track of owner so that we can later cleanup if - * necessary. - */ - buffer_info->owner = filp; - - kref_init(&buffer_info->refcount); - - mutex_lock(&rar->lock); - list_add(&buffer_info->list, &rar->buffers.list); - mutex_unlock(&rar->lock); - - rinfo->handle = buffer->info.handle; - request->bus_address = buffer->bus_address; - - return 0; -} - -/** - * memrar_release_block - release a RAR block - * @addr: address in RAR space - * - * Release a previously allocated block. Releases act on complete - * blocks, partially freeing a block is not supported - */ - -static long memrar_release_block(u32 addr) -{ - struct memrar_buffer_info *pos; - struct memrar_buffer_info *tmp; - struct memrar_rar_info * const rar = memrar_get_rar_info(addr); - long result = -EINVAL; - - if (rar == NULL) - return -ENOENT; - - mutex_lock(&rar->lock); - - /* - * Iterate through the buffer list to find the corresponding - * buffer to be released. - */ - list_for_each_entry_safe(pos, - tmp, - &rar->buffers.list, - list) { - struct RAR_block_info * const info = - &pos->buffer.info; - - /* - * Take into account handle offsets that may have been - * added to the base handle, such as in the following - * scenario: - * - * u32 handle = base + offset; - * rar_handle_to_bus(handle); - * rar_release(handle); - */ - if (addr >= info->handle - && addr < (info->handle + info->size) - && memrar_is_valid_rar_type(info->type)) { - kref_put(&pos->refcount, memrar_release_block_i); - result = 0; - break; - } - } - - mutex_unlock(&rar->lock); - - return result; -} - -/** - * memrar_get_stats - read statistics for a RAR - * @r: statistics to be filled in - * - * Returns the statistics data for the RAR, or an error code if - * the request cannot be completed - */ -static long memrar_get_stat(struct RAR_stat *r) -{ - struct memrar_allocator *allocator; - - if (!memrar_is_valid_rar_type(r->type)) - return -EINVAL; - - if (!memrars[r->type].allocated) - return -ENODEV; - - allocator = memrars[r->type].allocator; - - BUG_ON(allocator == NULL); - - /* - * Allocator capacity doesn't change over time. No - * need to synchronize. - */ - r->capacity = allocator->capacity; - - mutex_lock(&allocator->lock); - r->largest_block_size = allocator->largest_free_area; - mutex_unlock(&allocator->lock); - return 0; -} - -/** - * memrar_ioctl - ioctl callback - * @filp: file issuing the request - * @cmd: command - * @arg: pointer to control information - * - * Perform one of the ioctls supported by the memrar device - */ - -static long memrar_ioctl(struct file *filp, - unsigned int cmd, - unsigned long arg) -{ - void __user *argp = (void __user *)arg; - long result = 0; - - struct RAR_buffer buffer; - struct RAR_block_info * const request = &buffer.info; - struct RAR_stat rar_info; - u32 rar_handle; - - switch (cmd) { - case RAR_HANDLER_RESERVE: - if (copy_from_user(request, - argp, - sizeof(*request))) - return -EFAULT; - - result = memrar_reserve_block(&buffer, filp); - if (result != 0) - return result; - - return copy_to_user(argp, request, sizeof(*request)); - - case RAR_HANDLER_RELEASE: - if (copy_from_user(&rar_handle, - argp, - sizeof(rar_handle))) - return -EFAULT; - - return memrar_release_block(rar_handle); - - case RAR_HANDLER_STAT: - if (copy_from_user(&rar_info, - argp, - sizeof(rar_info))) - return -EFAULT; - - /* - * Populate the RAR_stat structure based on the RAR - * type given by the user - */ - if (memrar_get_stat(&rar_info) != 0) - return -EINVAL; - - /* - * @todo Do we need to verify destination pointer - * "argp" is non-zero? Is that already done by - * copy_to_user()? - */ - return copy_to_user(argp, - &rar_info, - sizeof(rar_info)) ? -EFAULT : 0; - - default: - return -ENOTTY; - } - - return 0; -} - -/** - * memrar_mmap - mmap helper for deubgging - * @filp: handle doing the mapping - * @vma: memory area - * - * Support the mmap operation on the RAR space for debugging systems - * when the memory is not locked down. - */ - -static int memrar_mmap(struct file *filp, struct vm_area_struct *vma) -{ - /* - * This mmap() implementation is predominantly useful for - * debugging since the CPU will be prevented from accessing - * RAR memory by the hardware when RAR is properly locked - * down. - * - * In order for this implementation to be useful RAR memory - * must be not be locked down. However, we only want to do - * that when debugging. DO NOT leave RAR memory unlocked in a - * deployed device that utilizes RAR. - */ - - size_t const size = vma->vm_end - vma->vm_start; - - /* Users pass the RAR handle as the mmap() offset parameter. */ - unsigned long const handle = vma->vm_pgoff << PAGE_SHIFT; - - struct memrar_rar_info * const rar = memrar_get_rar_info(handle); - unsigned long pfn; - - /* Only allow priviledged apps to go poking around this way */ - if (!capable(CAP_SYS_RAWIO)) - return -EPERM; - - /* Invalid RAR handle or size passed to mmap(). */ - if (rar == NULL - || handle == 0 - || size > (handle - (unsigned long) rar->iobase)) - return -EINVAL; - - /* - * Retrieve physical address corresponding to the RAR handle, - * and convert it to a page frame. - */ - pfn = memrar_get_physical_address(rar, handle) >> PAGE_SHIFT; - - - pr_debug("memrar: mapping RAR range [0x%lx, 0x%lx) into user space.\n", - handle, - handle + size); - - /* - * Map RAR memory into user space. This is really only useful - * for debugging purposes since the memory won't be - * accessible, i.e. reads return zero and writes are ignored, - * when RAR access control is enabled. - */ - if (remap_pfn_range(vma, - vma->vm_start, - pfn, - size, - vma->vm_page_prot)) - return -EAGAIN; - - /* vma->vm_ops = &memrar_mem_ops; */ - - return 0; -} - -/** - * memrar_open - device open method - * @inode: inode to open - * @filp: file handle - * - * As we support multiple arbitrary opens there is no work to be done - * really. - */ - -static int memrar_open(struct inode *inode, struct file *filp) -{ - nonseekable_open(inode, filp); - return 0; -} - -/** - * memrar_release - close method for miscev - * @inode: inode of device - * @filp: handle that is going away - * - * Free up all the regions that belong to this file handle. We use - * the handle as a natural Linux style 'lifetime' indicator and to - * ensure resources are not leaked when their owner explodes in an - * unplanned fashion. - */ - -static int memrar_release(struct inode *inode, struct file *filp) -{ - /* Free all regions associated with the given file handle. */ - - struct memrar_buffer_info *pos; - struct memrar_buffer_info *tmp; - int z; - - for (z = 0; z != MRST_NUM_RAR; ++z) { - struct memrar_rar_info * const rar = &memrars[z]; - - mutex_lock(&rar->lock); - - list_for_each_entry_safe(pos, - tmp, - &rar->buffers.list, - list) { - if (filp == pos->owner) - kref_put(&pos->refcount, - memrar_release_block_i); - } - - mutex_unlock(&rar->lock); - } - - return 0; -} - -/** - * rar_reserve - reserve RAR memory - * @buffers: buffers to reserve - * @count: number wanted - * - * Reserve a series of buffers in the RAR space. Returns the number of - * buffers successfully allocated - */ - -size_t rar_reserve(struct RAR_buffer *buffers, size_t count) -{ - struct RAR_buffer * const end = - (buffers == NULL ? buffers : buffers + count); - struct RAR_buffer *i; - - size_t reserve_count = 0; - - for (i = buffers; i != end; ++i) { - if (memrar_reserve_block(i, NULL) == 0) - ++reserve_count; - else - i->bus_address = 0; - } - - return reserve_count; -} -EXPORT_SYMBOL(rar_reserve); - -/** - * rar_release - return RAR buffers - * @buffers: buffers to release - * @size: size of released block - * - * Return a set of buffers to the RAR pool - */ - -size_t rar_release(struct RAR_buffer *buffers, size_t count) -{ - struct RAR_buffer * const end = - (buffers == NULL ? buffers : buffers + count); - struct RAR_buffer *i; - - size_t release_count = 0; - - for (i = buffers; i != end; ++i) { - u32 * const handle = &i->info.handle; - if (memrar_release_block(*handle) == 0) { - /* - * @todo We assume we should do this each time - * the ref count is decremented. Should - * we instead only do this when the ref - * count has dropped to zero, and the - * buffer has been completely - * released/unmapped? - */ - *handle = 0; - ++release_count; - } - } - - return release_count; -} -EXPORT_SYMBOL(rar_release); - -/** - * rar_handle_to_bus - RAR to bus address - * @buffers: RAR buffer structure - * @count: number of buffers to convert - * - * Turn a list of RAR handle mappings into actual bus addresses. Note - * that when the device is locked down the bus addresses in question - * are not CPU accessible. - */ - -size_t rar_handle_to_bus(struct RAR_buffer *buffers, size_t count) -{ - struct RAR_buffer * const end = - (buffers == NULL ? buffers : buffers + count); - struct RAR_buffer *i; - struct memrar_buffer_info *pos; - - size_t conversion_count = 0; - - /* - * Find all bus addresses corresponding to the given handles. - * - * @todo Not liking this nested loop. Optimize. - */ - for (i = buffers; i != end; ++i) { - struct memrar_rar_info * const rar = - memrar_get_rar_info(i->info.handle); - - /* - * Check if we have a bogus handle, and then continue - * with remaining buffers. - */ - if (rar == NULL) { - i->bus_address = 0; - continue; - } - - mutex_lock(&rar->lock); - - list_for_each_entry(pos, &rar->buffers.list, list) { - struct RAR_block_info * const user_info = - &pos->buffer.info; - - /* - * Take into account handle offsets that may - * have been added to the base handle, such as - * in the following scenario: - * - * u32 handle = base + offset; - * rar_handle_to_bus(handle); - */ - - if (i->info.handle >= user_info->handle - && i->info.handle < (user_info->handle - + user_info->size)) { - u32 const offset = - i->info.handle - user_info->handle; - - i->info.type = user_info->type; - i->info.size = user_info->size - offset; - i->bus_address = - pos->buffer.bus_address - + offset; - - /* Increment the reference count. */ - kref_get(&pos->refcount); - - ++conversion_count; - break; - } else { - i->bus_address = 0; - } - } - - mutex_unlock(&rar->lock); - } - - return conversion_count; -} -EXPORT_SYMBOL(rar_handle_to_bus); - -static const struct file_operations memrar_fops = { - .owner = THIS_MODULE, - .unlocked_ioctl = memrar_ioctl, - .mmap = memrar_mmap, - .open = memrar_open, - .release = memrar_release, - .llseek = no_llseek, -}; - -static struct miscdevice memrar_miscdev = { - .minor = MISC_DYNAMIC_MINOR, /* dynamic allocation */ - .name = "memrar", /* /dev/memrar */ - .fops = &memrar_fops -}; - -static char const banner[] __initdata = - KERN_INFO - "Intel RAR Handler: " MEMRAR_VER " initialized.\n"; - -/** - * memrar_registration_callback - RAR obtained - * @rar: RAR number - * - * We have been granted ownership of the RAR. Add it to our memory - * management tables - */ - -static int memrar_registration_callback(unsigned long rar) -{ - /* - * We initialize the RAR parameters early on so that we can - * discontinue memrar device initialization and registration - * if suitably configured RARs are not available. - */ - return memrar_init_rar_resources(rar, memrar_miscdev.name); -} - -/** - * memrar_init - initialise RAR support - * - * Initialise support for RAR handlers. This may get loaded before - * the RAR support is activated, but the callbacks on the registration - * will handle that situation for us anyway. - */ - -static int __init memrar_init(void) -{ - int err; - int i; - - printk(banner); - - /* - * Some delayed initialization is performed in this driver. - * Make sure resources that are used during driver clean-up - * (e.g. during driver's release() function) are fully - * initialized before first use. This is particularly - * important for the case when the delayed initialization - * isn't completed, leaving behind a partially initialized - * driver. - * - * Such a scenario can occur when RAR is not available on the - * platform, and the driver is release()d. - */ - for (i = 0; i != ARRAY_SIZE(memrars); ++i) { - struct memrar_rar_info * const rar = &memrars[i]; - mutex_init(&rar->lock); - INIT_LIST_HEAD(&rar->buffers.list); - } - - err = misc_register(&memrar_miscdev); - if (err) - return err; - - /* Now claim the two RARs we want */ - err = register_rar(0, memrar_registration_callback, 0); - if (err) - goto fail; - - err = register_rar(1, memrar_registration_callback, 1); - if (err == 0) - return 0; - - /* It is possible rar 0 registered and allocated resources then rar 1 - failed so do a full resource free */ - memrar_fini_rar_resources(); -fail: - misc_deregister(&memrar_miscdev); - return err; -} - -/** - * memrar_exit - unregister and unload - * - * Unregister the device and then unload any mappings and release - * the RAR resources - */ - -static void __exit memrar_exit(void) -{ - misc_deregister(&memrar_miscdev); - memrar_fini_rar_resources(); -} - - -module_init(memrar_init); -module_exit(memrar_exit); - - -MODULE_AUTHOR("Ossama Othman <ossama.othman@intel.com>"); -MODULE_DESCRIPTION("Intel Restricted Access Region Handler"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(MEMRAR_VER); - - - -/* - Local Variables: - c-file-style: "linux" - End: -*/ diff --git a/drivers/staging/olpc_dcon/Kconfig b/drivers/staging/olpc_dcon/Kconfig index f1082f50fdce..b05306766870 100644 --- a/drivers/staging/olpc_dcon/Kconfig +++ b/drivers/staging/olpc_dcon/Kconfig @@ -9,7 +9,7 @@ config FB_OLPC_DCON config FB_OLPC_DCON_1 bool "OLPC XO-1 DCON support" - depends on FB_OLPC_DCON + depends on FB_OLPC_DCON && GPIO_CS5535 default y ---help--- Enable support for the DCON in XO-1 model laptops. The kernel diff --git a/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c b/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c index e213b63f8116..7aa9b1a45bd6 100644 --- a/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c +++ b/drivers/staging/olpc_dcon/olpc_dcon_xo_1_5.c @@ -7,6 +7,7 @@ */ #include <linux/acpi.h> +#include <linux/delay.h> #include <linux/pci.h> #include <linux/gpio.h> #include <asm/olpc.h> diff --git a/drivers/staging/rtl8187se/Kconfig b/drivers/staging/rtl8187se/Kconfig index 1b3103fbf29c..3162aabbeb07 100644 --- a/drivers/staging/rtl8187se/Kconfig +++ b/drivers/staging/rtl8187se/Kconfig @@ -1,6 +1,7 @@ config R8187SE tristate "RealTek RTL8187SE Wireless LAN NIC driver" depends on PCI && WLAN + depends on m select WIRELESS_EXT select WEXT_PRIV select EEPROM_93CX6 diff --git a/drivers/staging/rtl8192e/Kconfig b/drivers/staging/rtl8192e/Kconfig index 2e64b239e241..750c347bfbe1 100644 --- a/drivers/staging/rtl8192e/Kconfig +++ b/drivers/staging/rtl8192e/Kconfig @@ -1,6 +1,7 @@ config RTL8192E tristate "RealTek RTL8192E Wireless LAN NIC driver" depends on PCI && WLAN + depends on m select WIRELESS_EXT select WEXT_PRIV select CRYPTO diff --git a/drivers/staging/rtl8192u/Kconfig b/drivers/staging/rtl8192u/Kconfig index 28969198e7e2..3f055091b35f 100644 --- a/drivers/staging/rtl8192u/Kconfig +++ b/drivers/staging/rtl8192u/Kconfig @@ -1,6 +1,7 @@ config RTL8192U tristate "RealTek RTL8192U Wireless LAN NIC driver" depends on PCI && WLAN && USB + depends on m select WIRELESS_EXT select WEXT_PRIV select CRYPTO diff --git a/drivers/staging/rts_pstor/rtsx.c b/drivers/staging/rts_pstor/rtsx.c index 4514419a5fb8..02525d57ba83 100644 --- a/drivers/staging/rts_pstor/rtsx.c +++ b/drivers/staging/rts_pstor/rtsx.c @@ -824,13 +824,13 @@ static void rtsx_init_options(struct rtsx_chip *chip) chip->fpga_ms_hg_clk = CLK_80; chip->fpga_ms_4bit_clk = CLK_80; chip->fpga_ms_1bit_clk = CLK_40; - chip->asic_sd_sdr104_clk = 207; - chip->asic_sd_sdr50_clk = 99; - chip->asic_sd_ddr50_clk = 99; - chip->asic_sd_hs_clk = 99; - chip->asic_mmc_52m_clk = 99; - chip->asic_ms_hg_clk = 119; - chip->asic_ms_4bit_clk = 79; + chip->asic_sd_sdr104_clk = 203; + chip->asic_sd_sdr50_clk = 98; + chip->asic_sd_ddr50_clk = 98; + chip->asic_sd_hs_clk = 98; + chip->asic_mmc_52m_clk = 98; + chip->asic_ms_hg_clk = 117; + chip->asic_ms_4bit_clk = 78; chip->asic_ms_1bit_clk = 39; chip->ssc_depth_sd_sdr104 = SSC_DEPTH_2M; chip->ssc_depth_sd_sdr50 = SSC_DEPTH_2M; diff --git a/drivers/staging/rts_pstor/rtsx_chip.c b/drivers/staging/rts_pstor/rtsx_chip.c index f443d97a56f8..d2f1c715a684 100644 --- a/drivers/staging/rts_pstor/rtsx_chip.c +++ b/drivers/staging/rts_pstor/rtsx_chip.c @@ -684,6 +684,11 @@ static int rts5209_init(struct rtsx_chip *chip) RTSX_DEBUGP("dw in 0x724: 0x%x\n", lval); val = (u8)lval; if (!(val & 0x80)) { + if (val & 0x08) + chip->lun_mode = DEFAULT_SINGLE; + else + chip->lun_mode = SD_MS_2LUN; + if (val & 0x04) { SET_SDIO_EXIST(chip); } else { @@ -705,12 +710,6 @@ static int rts5209_init(struct rtsx_chip *chip) chip->aspm_l0s_l1_en = (val >> 5) & 0x03; - if (val & 0x08) { - chip->lun_mode = DEFAULT_SINGLE; - } else { - chip->lun_mode = SD_MS_2LUN; - } - val = (u8)(lval >> 8); clk = (val >> 5) & 0x07; diff --git a/drivers/staging/sep/sep_driver.c b/drivers/staging/sep/sep_driver.c index c2f2664b61ae..890eede5e3f9 100644 --- a/drivers/staging/sep/sep_driver.c +++ b/drivers/staging/sep/sep_driver.c @@ -55,8 +55,6 @@ #include <linux/jiffies.h> #include <linux/rar_register.h> -#include "../memrar/memrar.h" - #include "sep_driver_hw_defs.h" #include "sep_driver_config.h" #include "sep_driver_api.h" @@ -2372,7 +2370,6 @@ static int sep_rar_prepare_output_msg_handler(struct sep_device *sep, int error = 0; /* Command args */ struct rar_hndl_to_bus_struct command_args; - struct RAR_buffer rar_buf; /* Bus address */ dma_addr_t rar_bus = 0; /* Holds the RAR address in the system memory offset */ @@ -2386,16 +2383,8 @@ static int sep_rar_prepare_output_msg_handler(struct sep_device *sep, } /* Call to translation function only if user handle is not NULL */ - if (command_args.rar_handle) { - memset(&rar_buf, 0, sizeof(rar_buf)); - rar_buf.info.handle = (u32)command_args.rar_handle; - - if (rar_handle_to_bus(&rar_buf, 1) != 1) { - error = -EFAULT; - goto end_function; - } - rar_bus = rar_buf.bus_address; - } + if (command_args.rar_handle) + return -EOPNOTSUPP; dev_dbg(&sep->pdev->dev, "rar msg; rar_addr_bus = %x\n", (u32)rar_bus); /* Set value in the SYSTEM MEMORY offset */ diff --git a/drivers/staging/sm7xx/smtcfb.c b/drivers/staging/sm7xx/smtcfb.c index 78a16a768509..3e2230f0879a 100644 --- a/drivers/staging/sm7xx/smtcfb.c +++ b/drivers/staging/sm7xx/smtcfb.c @@ -26,10 +26,6 @@ * Boyod.yang <boyod.yang@siliconmotion.com.cn> */ -#ifndef __KERNEL__ -#define __KERNEL__ -#endif - #include <linux/io.h> #include <linux/fb.h> #include <linux/pci.h> @@ -1019,6 +1015,7 @@ static void __devexit smtcfb_pci_remove(struct pci_dev *pdev) smtc_free_fb_info(sfb); } +#ifdef CONFIG_PM /* Jason (08/14/2009) * suspend function, called when the suspend event is triggered */ @@ -1111,6 +1108,7 @@ static int __maybe_unused smtcfb_resume(struct pci_dev *pdev) return 0; } +#endif /* Jason (08/13/2009) * pci_driver struct used to wrap the original driver diff --git a/drivers/staging/usbip/stub_dev.c b/drivers/staging/usbip/stub_dev.c index 8214c353d9f5..bce7d039346c 100644 --- a/drivers/staging/usbip/stub_dev.c +++ b/drivers/staging/usbip/stub_dev.c @@ -220,8 +220,10 @@ static void stub_shutdown_connection(struct usbip_device *ud) } /* 1. stop threads */ - kthread_stop(ud->tcp_rx); - kthread_stop(ud->tcp_tx); + if (ud->tcp_rx && !task_is_dead(ud->tcp_rx)) + kthread_stop(ud->tcp_rx); + if (ud->tcp_tx && !task_is_dead(ud->tcp_tx)) + kthread_stop(ud->tcp_tx); /* 2. close the socket */ /* diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c index 6445f12cb4fd..51fbd0986475 100644 --- a/drivers/staging/usbip/stub_rx.c +++ b/drivers/staging/usbip/stub_rx.c @@ -171,33 +171,23 @@ static int tweak_set_configuration_cmd(struct urb *urb) static int tweak_reset_device_cmd(struct urb *urb) { - struct usb_ctrlrequest *req; - __u16 value; - __u16 index; - int ret; - - req = (struct usb_ctrlrequest *) urb->setup_packet; - value = le16_to_cpu(req->wValue); - index = le16_to_cpu(req->wIndex); - - usbip_uinfo("reset_device (port %d) to %s\n", index, - dev_name(&urb->dev->dev)); + struct stub_priv *priv = (struct stub_priv *) urb->context; + struct stub_device *sdev = priv->sdev; - /* all interfaces should be owned by usbip driver, so just reset it. */ - ret = usb_lock_device_for_reset(urb->dev, NULL); - if (ret < 0) { - dev_err(&urb->dev->dev, "lock for reset\n"); - return ret; - } - - /* try to reset the device */ - ret = usb_reset_device(urb->dev); - if (ret < 0) - dev_err(&urb->dev->dev, "device reset\n"); + usbip_uinfo("reset_device %s\n", dev_name(&urb->dev->dev)); - usb_unlock_device(urb->dev); - - return ret; + /* + * usb_lock_device_for_reset caused a deadlock: it causes the driver + * to unbind. In the shutdown the rx thread is signalled to shut down + * but this thread is pending in the usb_lock_device_for_reset. + * + * Instead queue the reset. + * + * Unfortunatly an existing usbip connection will be dropped due to + * driver unbinding. + */ + usb_queue_reset_device(sdev->interface); + return 0; } /* diff --git a/drivers/staging/usbip/stub_tx.c b/drivers/staging/usbip/stub_tx.c index 5523f25998e6..64a52b26dcf6 100644 --- a/drivers/staging/usbip/stub_tx.c +++ b/drivers/staging/usbip/stub_tx.c @@ -170,7 +170,6 @@ static int stub_send_ret_submit(struct stub_device *sdev) struct stub_priv *priv, *tmp; struct msghdr msg; - struct kvec iov[3]; size_t txsize; size_t total_size = 0; @@ -180,28 +179,73 @@ static int stub_send_ret_submit(struct stub_device *sdev) struct urb *urb = priv->urb; struct usbip_header pdu_header; void *iso_buffer = NULL; + struct kvec *iov = NULL; + int iovnum = 0; txsize = 0; memset(&pdu_header, 0, sizeof(pdu_header)); memset(&msg, 0, sizeof(msg)); - memset(&iov, 0, sizeof(iov)); - usbip_dbg_stub_tx("setup txdata urb %p\n", urb); + if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) + iovnum = 2 + urb->number_of_packets; + else + iovnum = 2; + + iov = kzalloc(iovnum * sizeof(struct kvec), GFP_KERNEL); + if (!iov) { + usbip_event_add(&sdev->ud, SDEV_EVENT_ERROR_MALLOC); + return -1; + } + + iovnum = 0; /* 1. setup usbip_header */ setup_ret_submit_pdu(&pdu_header, urb); + usbip_dbg_stub_tx("setup txdata seqnum: %d urb: %p\n", + pdu_header.base.seqnum, urb); + /*usbip_dump_header(pdu_header);*/ usbip_header_correct_endian(&pdu_header, 1); - iov[0].iov_base = &pdu_header; - iov[0].iov_len = sizeof(pdu_header); + iov[iovnum].iov_base = &pdu_header; + iov[iovnum].iov_len = sizeof(pdu_header); + iovnum++; txsize += sizeof(pdu_header); /* 2. setup transfer buffer */ - if (usb_pipein(urb->pipe) && urb->actual_length > 0) { - iov[1].iov_base = urb->transfer_buffer; - iov[1].iov_len = urb->actual_length; + if (usb_pipein(urb->pipe) && + usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS && + urb->actual_length > 0) { + iov[iovnum].iov_base = urb->transfer_buffer; + iov[iovnum].iov_len = urb->actual_length; + iovnum++; txsize += urb->actual_length; + } else if (usb_pipein(urb->pipe) && + usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { + /* + * For isochronous packets: actual length is the sum of + * the actual length of the individual, packets, but as + * the packet offsets are not changed there will be + * padding between the packets. To optimally use the + * bandwidth the padding is not transmitted. + */ + + int i; + for (i = 0; i < urb->number_of_packets; i++) { + iov[iovnum].iov_base = urb->transfer_buffer + urb->iso_frame_desc[i].offset; + iov[iovnum].iov_len = urb->iso_frame_desc[i].actual_length; + iovnum++; + txsize += urb->iso_frame_desc[i].actual_length; + } + + if (txsize != sizeof(pdu_header) + urb->actual_length) { + dev_err(&sdev->interface->dev, + "actual length of urb (%d) does not match iso packet sizes (%d)\n", + urb->actual_length, txsize-sizeof(pdu_header)); + kfree(iov); + usbip_event_add(&sdev->ud, SDEV_EVENT_ERROR_TCP); + return -1; + } } /* 3. setup iso_packet_descriptor */ @@ -212,32 +256,34 @@ static int stub_send_ret_submit(struct stub_device *sdev) if (!iso_buffer) { usbip_event_add(&sdev->ud, SDEV_EVENT_ERROR_MALLOC); + kfree(iov); return -1; } - iov[2].iov_base = iso_buffer; - iov[2].iov_len = len; + iov[iovnum].iov_base = iso_buffer; + iov[iovnum].iov_len = len; txsize += len; + iovnum++; } - ret = kernel_sendmsg(sdev->ud.tcp_socket, &msg, iov, - 3, txsize); + ret = kernel_sendmsg(sdev->ud.tcp_socket, &msg, + iov, iovnum, txsize); if (ret != txsize) { dev_err(&sdev->interface->dev, "sendmsg failed!, retval %d for %zd\n", ret, txsize); + kfree(iov); kfree(iso_buffer); usbip_event_add(&sdev->ud, SDEV_EVENT_ERROR_TCP); return -1; } + kfree(iov); kfree(iso_buffer); - usbip_dbg_stub_tx("send txdata\n"); total_size += txsize; } - spin_lock_irqsave(&sdev->priv_lock, flags); list_for_each_entry_safe(priv, tmp, &sdev->priv_free, list) { diff --git a/drivers/staging/usbip/usbip_common.c b/drivers/staging/usbip/usbip_common.c index 337abc48f714..7b1fe45bf7dd 100644 --- a/drivers/staging/usbip/usbip_common.c +++ b/drivers/staging/usbip/usbip_common.c @@ -333,10 +333,11 @@ void usbip_dump_header(struct usbip_header *pdu) usbip_udbg("CMD_UNLINK: seq %u\n", pdu->u.cmd_unlink.seqnum); break; case USBIP_RET_SUBMIT: - usbip_udbg("RET_SUBMIT: st %d al %u sf %d ec %d\n", + usbip_udbg("RET_SUBMIT: st %d al %u sf %d #p %d ec %d\n", pdu->u.ret_submit.status, pdu->u.ret_submit.actual_length, pdu->u.ret_submit.start_frame, + pdu->u.ret_submit.number_of_packets, pdu->u.ret_submit.error_count); case USBIP_RET_UNLINK: usbip_udbg("RET_UNLINK: status %d\n", pdu->u.ret_unlink.status); @@ -520,6 +521,7 @@ static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb, rpdu->status = urb->status; rpdu->actual_length = urb->actual_length; rpdu->start_frame = urb->start_frame; + rpdu->number_of_packets = urb->number_of_packets; rpdu->error_count = urb->error_count; } else { /* vhci_rx.c */ @@ -527,6 +529,7 @@ static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb, urb->status = rpdu->status; urb->actual_length = rpdu->actual_length; urb->start_frame = rpdu->start_frame; + urb->number_of_packets = rpdu->number_of_packets; urb->error_count = rpdu->error_count; } } @@ -595,11 +598,13 @@ static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu, cpu_to_be32s(&pdu->status); cpu_to_be32s(&pdu->actual_length); cpu_to_be32s(&pdu->start_frame); + cpu_to_be32s(&pdu->number_of_packets); cpu_to_be32s(&pdu->error_count); } else { be32_to_cpus(&pdu->status); be32_to_cpus(&pdu->actual_length); be32_to_cpus(&pdu->start_frame); + cpu_to_be32s(&pdu->number_of_packets); be32_to_cpus(&pdu->error_count); } } @@ -725,6 +730,7 @@ int usbip_recv_iso(struct usbip_device *ud, struct urb *urb) int size = np * sizeof(*iso); int i; int ret; + int total_length = 0; if (!usb_pipeisoc(urb->pipe)) return 0; @@ -754,19 +760,75 @@ int usbip_recv_iso(struct usbip_device *ud, struct urb *urb) return -EPIPE; } + for (i = 0; i < np; i++) { iso = buff + (i * sizeof(*iso)); usbip_iso_pakcet_correct_endian(iso, 0); usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0); + total_length += urb->iso_frame_desc[i].actual_length; } kfree(buff); + if (total_length != urb->actual_length) { + dev_err(&urb->dev->dev, + "total length of iso packets (%d) not equal to actual length of buffer (%d)\n", + total_length, urb->actual_length); + + if (ud->side == USBIP_STUB) + usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); + else + usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); + + return -EPIPE; + } + return ret; } EXPORT_SYMBOL_GPL(usbip_recv_iso); +/* + * This functions restores the padding which was removed for optimizing + * the bandwidth during transfer over tcp/ip + * + * buffer and iso packets need to be stored and be in propeper endian in urb + * before calling this function + */ +int usbip_pad_iso(struct usbip_device *ud, struct urb *urb) +{ + int np = urb->number_of_packets; + int i; + int ret; + int actualoffset = urb->actual_length; + + if (!usb_pipeisoc(urb->pipe)) + return 0; + + /* if no packets or length of data is 0, then nothing to unpack */ + if (np == 0 || urb->actual_length == 0) + return 0; + + /* + * if actual_length is transfer_buffer_length then no padding is + * present. + */ + if (urb->actual_length == urb->transfer_buffer_length) + return 0; + + /* + * loop over all packets from last to first (to prevent overwritting + * memory when padding) and move them into the proper place + */ + for (i = np-1; i > 0; i--) { + actualoffset -= urb->iso_frame_desc[i].actual_length; + memmove(urb->transfer_buffer + urb->iso_frame_desc[i].offset, + urb->transfer_buffer + actualoffset, + urb->iso_frame_desc[i].actual_length); + } + return ret; +} +EXPORT_SYMBOL_GPL(usbip_pad_iso); /* some members of urb must be substituted before. */ int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb) diff --git a/drivers/staging/usbip/usbip_common.h b/drivers/staging/usbip/usbip_common.h index 9f809c315d92..c767f52be5fb 100644 --- a/drivers/staging/usbip/usbip_common.h +++ b/drivers/staging/usbip/usbip_common.h @@ -379,6 +379,8 @@ void usbip_header_correct_endian(struct usbip_header *pdu, int send); int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb); /* some members of urb must be substituted before. */ int usbip_recv_iso(struct usbip_device *ud, struct urb *urb); +/* some members of urb must be substituted before. */ +int usbip_pad_iso(struct usbip_device *ud, struct urb *urb); void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen); diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c index 09bf2355934b..2ffc96a4c0d4 100644 --- a/drivers/staging/usbip/vhci_rx.c +++ b/drivers/staging/usbip/vhci_rx.c @@ -100,6 +100,9 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, if (usbip_recv_iso(ud, urb) < 0) return; + /* restore the padding in iso packets */ + if (usbip_pad_iso(ud, urb) < 0) + return; if (usbip_dbg_flag_vhci_rx) usbip_dump_urb(urb); diff --git a/drivers/staging/vt6655/Kconfig b/drivers/staging/vt6655/Kconfig index 061e730df2d0..c3ba693a8cad 100644 --- a/drivers/staging/vt6655/Kconfig +++ b/drivers/staging/vt6655/Kconfig @@ -1,6 +1,6 @@ config VT6655 tristate "VIA Technologies VT6655 support" - depends on PCI && WLAN + depends on PCI && WLAN && m select WIRELESS_EXT select WEXT_PRIV ---help--- diff --git a/drivers/staging/vt6656/Kconfig b/drivers/staging/vt6656/Kconfig index a441ba513c40..f89ab205c8e0 100644 --- a/drivers/staging/vt6656/Kconfig +++ b/drivers/staging/vt6656/Kconfig @@ -1,6 +1,6 @@ config VT6656 tristate "VIA Technologies VT6656 support" - depends on USB && WLAN + depends on USB && WLAN && m select WIRELESS_EXT select WEXT_PRIV select FW_LOADER diff --git a/drivers/staging/westbridge/astoria/gadget/cyasgadget.c b/drivers/staging/westbridge/astoria/gadget/cyasgadget.c index defa05cd5e50..be851ca54cec 100644 --- a/drivers/staging/westbridge/astoria/gadget/cyasgadget.c +++ b/drivers/staging/westbridge/astoria/gadget/cyasgadget.c @@ -587,6 +587,7 @@ static int cyasgadget_enable( "cy_as_usb_end_point_config EP %s mismatch " "on enabled\n", an_ep->usb_ep_inst.name); #endif + spin_unlock_irqrestore(&an_dev->lock, flags); return -EINVAL; } |