diff options
Diffstat (limited to 'drivers/net/sfc')
-rw-r--r-- | drivers/net/sfc/Kconfig | 7 | ||||
-rw-r--r-- | drivers/net/sfc/efx.c | 60 | ||||
-rw-r--r-- | drivers/net/sfc/enum.h | 3 | ||||
-rw-r--r-- | drivers/net/sfc/ethtool.c | 27 | ||||
-rw-r--r-- | drivers/net/sfc/falcon.c | 51 | ||||
-rw-r--r-- | drivers/net/sfc/filter.c | 47 | ||||
-rw-r--r-- | drivers/net/sfc/net_driver.h | 12 | ||||
-rw-r--r-- | drivers/net/sfc/nic.c | 1 | ||||
-rw-r--r-- | drivers/net/sfc/siena.c | 49 |
9 files changed, 155 insertions, 102 deletions
diff --git a/drivers/net/sfc/Kconfig b/drivers/net/sfc/Kconfig index a65c98638398..a3d5bb9e39dc 100644 --- a/drivers/net/sfc/Kconfig +++ b/drivers/net/sfc/Kconfig @@ -1,5 +1,5 @@ config SFC - tristate "Solarflare Solarstorm SFC4000/SFC9000-family support" + tristate "Solarflare SFC4000/SFC9000-family support" depends on PCI && INET select MDIO select CRC32 @@ -7,13 +7,12 @@ config SFC select I2C_ALGOBIT help This driver supports 10-gigabit Ethernet cards based on - the Solarflare Communications Solarstorm SFC4000 and - SFC9000-family controllers. + the Solarflare SFC4000 and SFC9000-family controllers. To compile this driver as a module, choose M here. The module will be called sfc. config SFC_MTD - bool "Solarflare Solarstorm SFC4000/SFC9000-family MTD support" + bool "Solarflare SFC4000/SFC9000-family MTD support" depends on SFC && MTD && !(SFC=y && MTD=m) default y help diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index c914729f9554..faca764aa21b 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -229,8 +229,7 @@ static int efx_process_channel(struct efx_channel *channel, int budget) struct efx_nic *efx = channel->efx; int spent; - if (unlikely(efx->reset_pending != RESET_TYPE_NONE || - !channel->enabled)) + if (unlikely(efx->reset_pending || !channel->enabled)) return 0; spent = efx_nic_process_eventq(channel, budget); @@ -1461,7 +1460,7 @@ static void efx_start_all(struct efx_nic *efx) * reset_pending [modified from an atomic context], we instead guarantee * that efx_mcdi_mode_poll() isn't reverted erroneously */ efx_mcdi_mode_event(efx); - if (efx->reset_pending != RESET_TYPE_NONE) + if (efx->reset_pending) efx_mcdi_mode_poll(efx); /* Start the hardware monitor if there is one. Otherwise (we're link @@ -2118,8 +2117,10 @@ int efx_reset(struct efx_nic *efx, enum reset_type method) goto out; } - /* Allow resets to be rescheduled. */ - efx->reset_pending = RESET_TYPE_NONE; + /* Clear flags for the scopes we covered. We assume the NIC and + * driver are now quiescent so that there is no race here. + */ + efx->reset_pending &= -(1 << (method + 1)); /* Reinitialise bus-mastering, which may have been turned off before * the reset was scheduled. This is still appropriate, even in the @@ -2154,12 +2155,13 @@ out: static void efx_reset_work(struct work_struct *data) { struct efx_nic *efx = container_of(data, struct efx_nic, reset_work); + unsigned long pending = ACCESS_ONCE(efx->reset_pending); - if (efx->reset_pending == RESET_TYPE_NONE) + if (!pending) return; /* If we're not RUNNING then don't reset. Leave the reset_pending - * flag set so that efx_pci_probe_main will be retried */ + * flags set so that efx_pci_probe_main will be retried */ if (efx->state != STATE_RUNNING) { netif_info(efx, drv, efx->net_dev, "scheduled reset quenched. NIC not RUNNING\n"); @@ -2167,7 +2169,7 @@ static void efx_reset_work(struct work_struct *data) } rtnl_lock(); - (void)efx_reset(efx, efx->reset_pending); + (void)efx_reset(efx, fls(pending) - 1); rtnl_unlock(); } @@ -2175,40 +2177,24 @@ void efx_schedule_reset(struct efx_nic *efx, enum reset_type type) { enum reset_type method; - if (efx->reset_pending != RESET_TYPE_NONE) { - netif_info(efx, drv, efx->net_dev, - "quenching already scheduled reset\n"); - return; - } - switch (type) { case RESET_TYPE_INVISIBLE: case RESET_TYPE_ALL: case RESET_TYPE_WORLD: case RESET_TYPE_DISABLE: method = type; + netif_dbg(efx, drv, efx->net_dev, "scheduling %s reset\n", + RESET_TYPE(method)); break; - case RESET_TYPE_RX_RECOVERY: - case RESET_TYPE_RX_DESC_FETCH: - case RESET_TYPE_TX_DESC_FETCH: - case RESET_TYPE_TX_SKIP: - method = RESET_TYPE_INVISIBLE; - break; - case RESET_TYPE_MC_FAILURE: default: - method = RESET_TYPE_ALL; - break; - } - - if (method != type) + method = efx->type->map_reset_reason(type); netif_dbg(efx, drv, efx->net_dev, "scheduling %s reset for %s\n", RESET_TYPE(method), RESET_TYPE(type)); - else - netif_dbg(efx, drv, efx->net_dev, "scheduling %s reset\n", - RESET_TYPE(method)); + break; + } - efx->reset_pending = method; + set_bit(method, &efx->reset_pending); /* efx_process_channel() will no longer read events once a * reset is scheduled. So switch back to poll'd MCDI completions. */ @@ -2288,7 +2274,6 @@ static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type, efx->pci_dev = pci_dev; efx->msg_enable = debug; efx->state = STATE_INIT; - efx->reset_pending = RESET_TYPE_NONE; strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name)); efx->net_dev = net_dev; @@ -2491,7 +2476,7 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev, goto fail1; netif_info(efx, probe, efx->net_dev, - "Solarflare Communications NIC detected\n"); + "Solarflare NIC detected\n"); /* Set up basic I/O (BAR mappings etc) */ rc = efx_init_io(efx); @@ -2510,7 +2495,7 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev, cancel_work_sync(&efx->reset_work); if (rc == 0) { - if (efx->reset_pending != RESET_TYPE_NONE) { + if (efx->reset_pending) { /* If there was a scheduled reset during * probe, the NIC is probably hosed anyway */ efx_pci_remove_main(efx); @@ -2521,11 +2506,12 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev, } /* Retry if a recoverably reset event has been scheduled */ - if ((efx->reset_pending != RESET_TYPE_INVISIBLE) && - (efx->reset_pending != RESET_TYPE_ALL)) + if (efx->reset_pending & + ~(1 << RESET_TYPE_INVISIBLE | 1 << RESET_TYPE_ALL) || + !efx->reset_pending) goto fail3; - efx->reset_pending = RESET_TYPE_NONE; + efx->reset_pending = 0; } if (rc) { @@ -2609,7 +2595,7 @@ static int efx_pm_poweroff(struct device *dev) efx->type->fini(efx); - efx->reset_pending = RESET_TYPE_NONE; + efx->reset_pending = 0; pci_save_state(pci_dev); return pci_set_power_state(pci_dev, PCI_D3hot); diff --git a/drivers/net/sfc/enum.h b/drivers/net/sfc/enum.h index 384cfe3b1be1..d725a8fbe1a6 100644 --- a/drivers/net/sfc/enum.h +++ b/drivers/net/sfc/enum.h @@ -134,6 +134,8 @@ enum efx_loopback_mode { * other valuesspecify reasons, which efx_schedule_reset() will choose * a method for. * + * Reset methods are numbered in order of increasing scope. + * * @RESET_TYPE_INVISIBLE: don't reset the PHYs or interrupts * @RESET_TYPE_ALL: reset everything but PCI core blocks * @RESET_TYPE_WORLD: reset everything, save & restore PCI config @@ -147,7 +149,6 @@ enum efx_loopback_mode { * @RESET_TYPE_MC_FAILURE: MC reboot/assertion */ enum reset_type { - RESET_TYPE_NONE = -1, RESET_TYPE_INVISIBLE = 0, RESET_TYPE_ALL = 1, RESET_TYPE_WORLD = 2, diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c index d229027dc363..bc4643af6dd1 100644 --- a/drivers/net/sfc/ethtool.c +++ b/drivers/net/sfc/ethtool.c @@ -796,30 +796,13 @@ static int efx_ethtool_set_wol(struct net_device *net_dev, static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags) { struct efx_nic *efx = netdev_priv(net_dev); - enum reset_type method; - enum { - ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER | - ETH_RESET_OFFLOAD | ETH_RESET_MAC) - }; - - /* Check for minimal reset flags */ - if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE) - return -EINVAL; - *flags ^= ETH_RESET_EFX_INVISIBLE; - method = RESET_TYPE_INVISIBLE; - - if (*flags & ETH_RESET_PHY) { - *flags ^= ETH_RESET_PHY; - method = RESET_TYPE_ALL; - } + int rc; - if ((*flags & efx->type->reset_world_flags) == - efx->type->reset_world_flags) { - *flags ^= efx->type->reset_world_flags; - method = RESET_TYPE_WORLD; - } + rc = efx->type->map_reset_flags(flags); + if (rc < 0) + return rc; - return efx_reset(efx, method); + return efx_reset(efx, rc); } static int diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index 60176e873d62..94bf4aaf984d 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -536,7 +536,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx) efx_oword_t reg; int link_speed, isolate; - isolate = (efx->reset_pending != RESET_TYPE_NONE); + isolate = !!ACCESS_ONCE(efx->reset_pending); switch (link_state->speed) { case 10000: link_speed = 3; break; @@ -1051,6 +1051,49 @@ static int falcon_b0_test_registers(struct efx_nic *efx) ************************************************************************** */ +static enum reset_type falcon_map_reset_reason(enum reset_type reason) +{ + switch (reason) { + case RESET_TYPE_RX_RECOVERY: + case RESET_TYPE_RX_DESC_FETCH: + case RESET_TYPE_TX_DESC_FETCH: + case RESET_TYPE_TX_SKIP: + /* These can occasionally occur due to hardware bugs. + * We try to reset without disrupting the link. + */ + return RESET_TYPE_INVISIBLE; + default: + return RESET_TYPE_ALL; + } +} + +static int falcon_map_reset_flags(u32 *flags) +{ + enum { + FALCON_RESET_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER | + ETH_RESET_OFFLOAD | ETH_RESET_MAC), + FALCON_RESET_ALL = FALCON_RESET_INVISIBLE | ETH_RESET_PHY, + FALCON_RESET_WORLD = FALCON_RESET_ALL | ETH_RESET_IRQ, + }; + + if ((*flags & FALCON_RESET_WORLD) == FALCON_RESET_WORLD) { + *flags &= ~FALCON_RESET_WORLD; + return RESET_TYPE_WORLD; + } + + if ((*flags & FALCON_RESET_ALL) == FALCON_RESET_ALL) { + *flags &= ~FALCON_RESET_ALL; + return RESET_TYPE_ALL; + } + + if ((*flags & FALCON_RESET_INVISIBLE) == FALCON_RESET_INVISIBLE) { + *flags &= ~FALCON_RESET_INVISIBLE; + return RESET_TYPE_INVISIBLE; + } + + return -EINVAL; +} + /* Resets NIC to known state. This routine must be called in process * context and is allowed to sleep. */ static int __falcon_reset_hw(struct efx_nic *efx, enum reset_type method) @@ -1709,6 +1752,8 @@ const struct efx_nic_type falcon_a1_nic_type = { .init = falcon_init_nic, .fini = efx_port_dummy_op_void, .monitor = falcon_monitor, + .map_reset_reason = falcon_map_reset_reason, + .map_reset_flags = falcon_map_reset_flags, .reset = falcon_reset_hw, .probe_port = falcon_probe_port, .remove_port = falcon_remove_port, @@ -1741,7 +1786,6 @@ const struct efx_nic_type falcon_a1_nic_type = { .tx_dc_base = 0x130000, .rx_dc_base = 0x100000, .offload_features = NETIF_F_IP_CSUM, - .reset_world_flags = ETH_RESET_IRQ, }; const struct efx_nic_type falcon_b0_nic_type = { @@ -1750,6 +1794,8 @@ const struct efx_nic_type falcon_b0_nic_type = { .init = falcon_init_nic, .fini = efx_port_dummy_op_void, .monitor = falcon_monitor, + .map_reset_reason = falcon_map_reset_reason, + .map_reset_flags = falcon_map_reset_flags, .reset = falcon_reset_hw, .probe_port = falcon_probe_port, .remove_port = falcon_remove_port, @@ -1791,6 +1837,5 @@ const struct efx_nic_type falcon_b0_nic_type = { .tx_dc_base = 0x130000, .rx_dc_base = 0x100000, .offload_features = NETIF_F_IP_CSUM | NETIF_F_RXHASH | NETIF_F_NTUPLE, - .reset_world_flags = ETH_RESET_IRQ, }; diff --git a/drivers/net/sfc/filter.c b/drivers/net/sfc/filter.c index 95a980fd63d5..2b9636f96e05 100644 --- a/drivers/net/sfc/filter.c +++ b/drivers/net/sfc/filter.c @@ -335,28 +335,35 @@ static int efx_filter_search(struct efx_filter_table *table, bool for_insert, int *depth_required) { unsigned hash, incr, filter_idx, depth, depth_max; - struct efx_filter_spec *cmp; hash = efx_filter_hash(key); incr = efx_filter_increment(key); - depth_max = (spec->priority <= EFX_FILTER_PRI_HINT ? - FILTER_CTL_SRCH_HINT_MAX : FILTER_CTL_SRCH_MAX); - - for (depth = 1, filter_idx = hash & (table->size - 1); - depth <= depth_max && test_bit(filter_idx, table->used_bitmap); - ++depth) { - cmp = &table->spec[filter_idx]; - if (efx_filter_equal(spec, cmp)) - goto found; + + filter_idx = hash & (table->size - 1); + depth = 1; + depth_max = (for_insert ? + (spec->priority <= EFX_FILTER_PRI_HINT ? + FILTER_CTL_SRCH_HINT_MAX : FILTER_CTL_SRCH_MAX) : + table->search_depth[spec->type]); + + for (;;) { + /* Return success if entry is used and matches this spec + * or entry is unused and we are trying to insert. + */ + if (test_bit(filter_idx, table->used_bitmap) ? + efx_filter_equal(spec, &table->spec[filter_idx]) : + for_insert) { + *depth_required = depth; + return filter_idx; + } + + /* Return failure if we reached the maximum search depth */ + if (depth == depth_max) + return for_insert ? -EBUSY : -ENOENT; + filter_idx = (filter_idx + incr) & (table->size - 1); + ++depth; } - if (!for_insert) - return -ENOENT; - if (depth > depth_max) - return -EBUSY; -found: - *depth_required = depth; - return filter_idx; } /* Construct/deconstruct external filter IDs */ @@ -650,11 +657,11 @@ int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, return -EPROTONOSUPPORT; /* RFS must validate the IP header length before calling us */ - EFX_BUG_ON_PARANOID(!pskb_may_pull(skb, nhoff + sizeof(*ip))); + EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + sizeof(*ip)); ip = (const struct iphdr *)(skb->data + nhoff); - if (ip->frag_off & htons(IP_MF | IP_OFFSET)) + if (ip_is_fragment(ip)) return -EPROTONOSUPPORT; - EFX_BUG_ON_PARANOID(!pskb_may_pull(skb, nhoff + 4 * ip->ihl + 4)); + EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + 4 * ip->ihl + 4); ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); efx_filter_init_rx(&spec, EFX_FILTER_PRI_HINT, 0, rxq_index); diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index e8d5f03a89fe..b8e251a1ee48 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -17,7 +17,6 @@ #define DEBUG #endif -#include <linux/version.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> @@ -645,7 +644,7 @@ struct efx_filter_state; * @irq_rx_moderation: IRQ moderation time for RX event queues * @msg_enable: Log message enable flags * @state: Device state flag. Serialised by the rtnl_lock. - * @reset_pending: Pending reset method (normally RESET_TYPE_NONE) + * @reset_pending: Bitmask for pending resets * @tx_queue: TX DMA queues * @rx_queue: RX DMA queues * @channel: Channels @@ -728,7 +727,7 @@ struct efx_nic { u32 msg_enable; enum nic_state state; - enum reset_type reset_pending; + unsigned long reset_pending; struct efx_channel *channel[EFX_MAX_CHANNELS]; char channel_name[EFX_MAX_CHANNELS][IFNAMSIZ + 6]; @@ -828,6 +827,8 @@ static inline unsigned int efx_port_num(struct efx_nic *efx) * @init: Initialise the controller * @fini: Shut down the controller * @monitor: Periodic function for polling link state and hardware monitor + * @map_reset_reason: Map ethtool reset reason to a reset method + * @map_reset_flags: Map ethtool reset flags to a reset method, if possible * @reset: Reset the controller hardware and possibly the PHY. This will * be called while the controller is uninitialised. * @probe_port: Probe the MAC and PHY @@ -865,8 +866,6 @@ static inline unsigned int efx_port_num(struct efx_nic *efx) * @rx_dc_base: Base address in SRAM of RX queue descriptor caches * @offload_features: net_device feature flags for protocol offload * features implemented in hardware - * @reset_world_flags: Flags for additional components covered by - * reset method RESET_TYPE_WORLD */ struct efx_nic_type { int (*probe)(struct efx_nic *efx); @@ -874,6 +873,8 @@ struct efx_nic_type { int (*init)(struct efx_nic *efx); void (*fini)(struct efx_nic *efx); void (*monitor)(struct efx_nic *efx); + enum reset_type (*map_reset_reason)(enum reset_type reason); + int (*map_reset_flags)(u32 *flags); int (*reset)(struct efx_nic *efx, enum reset_type method); int (*probe_port)(struct efx_nic *efx); void (*remove_port)(struct efx_nic *efx); @@ -908,7 +909,6 @@ struct efx_nic_type { unsigned int tx_dc_base; unsigned int rx_dc_base; u32 offload_features; - u32 reset_world_flags; }; /************************************************************************** diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c index f2a2b947f860..bafa23a6874c 100644 --- a/drivers/net/sfc/nic.c +++ b/drivers/net/sfc/nic.c @@ -10,6 +10,7 @@ #include <linux/bitops.h> #include <linux/delay.h> +#include <linux/interrupt.h> #include <linux/pci.h> #include <linux/module.h> #include <linux/seq_file.h> diff --git a/drivers/net/sfc/siena.c b/drivers/net/sfc/siena.c index fb4721f780ff..5735e84c69de 100644 --- a/drivers/net/sfc/siena.c +++ b/drivers/net/sfc/siena.c @@ -177,6 +177,36 @@ static int siena_test_registers(struct efx_nic *efx) ************************************************************************** */ +static enum reset_type siena_map_reset_reason(enum reset_type reason) +{ + return RESET_TYPE_ALL; +} + +static int siena_map_reset_flags(u32 *flags) +{ + enum { + SIENA_RESET_PORT = (ETH_RESET_DMA | ETH_RESET_FILTER | + ETH_RESET_OFFLOAD | ETH_RESET_MAC | + ETH_RESET_PHY), + SIENA_RESET_MC = (SIENA_RESET_PORT | + ETH_RESET_MGMT << ETH_RESET_SHARED_SHIFT), + }; + + if ((*flags & SIENA_RESET_MC) == SIENA_RESET_MC) { + *flags &= ~SIENA_RESET_MC; + return RESET_TYPE_WORLD; + } + + if ((*flags & SIENA_RESET_PORT) == SIENA_RESET_PORT) { + *flags &= ~SIENA_RESET_PORT; + return RESET_TYPE_ALL; + } + + /* no invisible reset implemented */ + + return -EINVAL; +} + static int siena_reset_hw(struct efx_nic *efx, enum reset_type method) { int rc; @@ -390,17 +420,16 @@ static void siena_remove_nic(struct efx_nic *efx) efx->nic_data = NULL; } -#define STATS_GENERATION_INVALID ((u64)(-1)) +#define STATS_GENERATION_INVALID ((__force __le64)(-1)) static int siena_try_update_nic_stats(struct efx_nic *efx) { - u64 *dma_stats; + __le64 *dma_stats; struct efx_mac_stats *mac_stats; - u64 generation_start; - u64 generation_end; + __le64 generation_start, generation_end; mac_stats = &efx->mac_stats; - dma_stats = (u64 *)efx->stats_buffer.addr; + dma_stats = efx->stats_buffer.addr; generation_end = dma_stats[MC_CMD_MAC_GENERATION_END]; if (generation_end == STATS_GENERATION_INVALID) @@ -408,7 +437,7 @@ static int siena_try_update_nic_stats(struct efx_nic *efx) rmb(); #define MAC_STAT(M, D) \ - mac_stats->M = dma_stats[MC_CMD_MAC_ ## D] + mac_stats->M = le64_to_cpu(dma_stats[MC_CMD_MAC_ ## D]) MAC_STAT(tx_bytes, TX_BYTES); MAC_STAT(tx_bad_bytes, TX_BAD_BYTES); @@ -478,7 +507,8 @@ static int siena_try_update_nic_stats(struct efx_nic *efx) MAC_STAT(rx_internal_error, RX_INTERNAL_ERROR_PKTS); mac_stats->rx_good_lt64 = 0; - efx->n_rx_nodesc_drop_cnt = dma_stats[MC_CMD_MAC_RX_NODESC_DROPS]; + efx->n_rx_nodesc_drop_cnt = + le64_to_cpu(dma_stats[MC_CMD_MAC_RX_NODESC_DROPS]); #undef MAC_STAT @@ -507,7 +537,7 @@ static void siena_update_nic_stats(struct efx_nic *efx) static void siena_start_nic_stats(struct efx_nic *efx) { - u64 *dma_stats = (u64 *)efx->stats_buffer.addr; + __le64 *dma_stats = efx->stats_buffer.addr; dma_stats[MC_CMD_MAC_GENERATION_END] = STATS_GENERATION_INVALID; @@ -605,6 +635,8 @@ const struct efx_nic_type siena_a0_nic_type = { .init = siena_init_nic, .fini = efx_port_dummy_op_void, .monitor = NULL, + .map_reset_reason = siena_map_reset_reason, + .map_reset_flags = siena_map_reset_flags, .reset = siena_reset_hw, .probe_port = siena_probe_port, .remove_port = siena_remove_port, @@ -641,5 +673,4 @@ const struct efx_nic_type siena_a0_nic_type = { .rx_dc_base = 0x68000, .offload_features = (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXHASH | NETIF_F_NTUPLE), - .reset_world_flags = ETH_RESET_MGMT << ETH_RESET_SHARED_SHIFT, }; |