/* * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include "mlx5_core.h" #include "lib/eq.h" #include "lib/mlx5.h" #include "lib/pci_vsc.h" #include "lib/tout.h" #include "diag/fw_tracer.h" enum { MAX_MISSES = 3, }; enum { MLX5_HEALTH_SYNDR_FW_ERR = 0x1, MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7, MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR = 0x8, MLX5_HEALTH_SYNDR_CRC_ERR = 0x9, MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa, MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb, MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc, MLX5_HEALTH_SYNDR_EQ_ERR = 0xd, MLX5_HEALTH_SYNDR_EQ_INV = 0xe, MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf, MLX5_HEALTH_SYNDR_HIGH_TEMP = 0x10 }; enum { MLX5_DROP_NEW_HEALTH_WORK, }; enum { MLX5_SENSOR_NO_ERR = 0, MLX5_SENSOR_PCI_COMM_ERR = 1, MLX5_SENSOR_PCI_ERR = 2, MLX5_SENSOR_NIC_DISABLED = 3, MLX5_SENSOR_NIC_SW_RESET = 4, MLX5_SENSOR_FW_SYND_RFR = 5, }; enum { MLX5_SEVERITY_MASK = 0x7, MLX5_SEVERITY_VALID_MASK = 0x8, }; u8 mlx5_get_nic_state(struct mlx5_core_dev *dev) { return (ioread32be(&dev->iseg->cmdq_addr_l_sz) >> 8) & 7; } void mlx5_set_nic_state(struct mlx5_core_dev *dev, u8 state) { u32 cur_cmdq_addr_l_sz; cur_cmdq_addr_l_sz = ioread32be(&dev->iseg->cmdq_addr_l_sz); iowrite32be((cur_cmdq_addr_l_sz & 0xFFFFF000) | state << MLX5_NIC_IFC_OFFSET, &dev->iseg->cmdq_addr_l_sz); } static bool sensor_pci_not_working(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; /* Offline PCI reads return 0xffffffff */ return (ioread32be(&h->fw_ver) == 0xffffffff); } static int mlx5_health_get_rfr(u8 rfr_severity) { return rfr_severity >> MLX5_RFR_BIT_OFFSET; } static bool sensor_fw_synd_rfr(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; u8 synd = ioread8(&h->synd); u8 rfr; rfr = mlx5_health_get_rfr(ioread8(&h->rfr_severity)); if (rfr && synd) mlx5_core_dbg(dev, "FW requests reset, synd: %d\n", synd); return rfr && synd; } u32 mlx5_health_check_fatal_sensors(struct mlx5_core_dev *dev) { if (sensor_pci_not_working(dev)) return MLX5_SENSOR_PCI_COMM_ERR; if (pci_channel_offline(dev->pdev)) return MLX5_SENSOR_PCI_ERR; if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_DISABLED) return MLX5_SENSOR_NIC_DISABLED; if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_SW_RESET) return MLX5_SENSOR_NIC_SW_RESET; if (sensor_fw_synd_rfr(dev)) return MLX5_SENSOR_FW_SYND_RFR; return MLX5_SENSOR_NO_ERR; } static int lock_sem_sw_reset(struct mlx5_core_dev *dev, bool lock) { enum mlx5_vsc_state state; int ret; if (!mlx5_core_is_pf(dev)) return -EBUSY; /* Try to lock GW access, this stage doesn't return * EBUSY because locked GW does not mean that other PF * already started the reset. */ ret = mlx5_vsc_gw_lock(dev); if (ret == -EBUSY) return -EINVAL; if (ret) return ret; state = lock ? MLX5_VSC_LOCK : MLX5_VSC_UNLOCK; /* At this stage, if the return status == EBUSY, then we know * for sure that another PF started the reset, so don't allow * another reset. */ ret = mlx5_vsc_sem_set_space(dev, MLX5_SEMAPHORE_SW_RESET, state); if (ret) mlx5_core_warn(dev, "Failed to lock SW reset semaphore\n"); /* Unlock GW access */ mlx5_vsc_gw_unlock(dev); return ret; } static bool reset_fw_if_needed(struct mlx5_core_dev *dev) { bool supported = (ioread32be(&dev->iseg->initializing) >> MLX5_FW_RESET_SUPPORTED_OFFSET) & 1; u32 fatal_error; if (!supported) return false; /* The reset only needs to be issued by one PF. The health buffer is * shared between all functions, and will be cleared during a reset. * Check again to avoid a redundant 2nd reset. If the fatal errors was * PCI related a reset won't help. */ fatal_error = mlx5_health_check_fatal_sensors(dev); if (fatal_error == MLX5_SENSOR_PCI_COMM_ERR || fatal_error == MLX5_SENSOR_NIC_DISABLED || fatal_error == MLX5_SENSOR_NIC_SW_RESET) { mlx5_core_warn(dev, "Not issuing FW reset. Either it's already done or won't help."); return false; } mlx5_core_warn(dev, "Issuing FW Reset\n"); /* Write the NIC interface field to initiate the reset, the command * interface address also resides here, don't overwrite it. */ mlx5_set_nic_state(dev, MLX5_NIC_IFC_SW_RESET); return true; } static void enter_error_state(struct mlx5_core_dev *dev, bool force) { if (mlx5_health_check_fatal_sensors(dev) || force) { /* protected state setting */ dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR; mlx5_cmd_flush(dev); } mlx5_notifier_call_chain(dev->priv.events, MLX5_DEV_EVENT_SYS_ERROR, (void *)1); } void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force) { bool err_detected = false; /* Mark the device as fatal in order to abort FW commands */ if ((mlx5_health_check_fatal_sensors(dev) || force) && dev->state == MLX5_DEVICE_STATE_UP) { dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR; err_detected = true; } mutex_lock(&dev->intf_state_mutex); if (!err_detected && dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) goto unlock;/* a previous error is still being handled */ enter_error_state(dev, force); unlock: mutex_unlock(&dev->intf_state_mutex); } void mlx5_error_sw_reset(struct mlx5_core_dev *dev) { unsigned long end, delay_ms = mlx5_tout_ms(dev, PCI_TOGGLE); int lock = -EBUSY; mutex_lock(&dev->intf_state_mutex); if (dev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) goto unlock; mlx5_core_err(dev, "start\n"); if (mlx5_health_check_fatal_sensors(dev) == MLX5_SENSOR_FW_SYND_RFR) { /* Get cr-dump and reset FW semaphore */ lock = lock_sem_sw_reset(dev, true); if (lock == -EBUSY) { delay_ms = mlx5_tout_ms(dev, FULL_CRDUMP); goto recover_from_sw_reset; } /* Execute SW reset */ reset_fw_if_needed(dev); } recover_from_sw_reset: /* Recover from SW reset */ end = jiffies + msecs_to_jiffies(delay_ms); do { if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_DISABLED) break; msleep(20); } while (!time_after(jiffies, end)); if (mlx5_get_nic_state(dev) != MLX5_NIC_IFC_DISABLED) { dev_err(&dev->pdev->dev, "NIC IFC still %d after %lums.\n", mlx5_get_nic_state(dev), delay_ms); } /* Release FW semaphore if you are the lock owner */ if (!lock) lock_sem_sw_reset(dev, false); mlx5_core_err(dev, "end\n"); unlock: mutex_unlock(&dev->intf_state_mutex); } static void mlx5_handle_bad_state(struct mlx5_core_dev *dev) { u8 nic_interface = mlx5_get_nic_state(dev); switch (nic_interface) { case MLX5_NIC_IFC_FULL: mlx5_core_warn(dev, "Expected to see disabled NIC but it is full driver\n"); break; case MLX5_NIC_IFC_DISABLED: mlx5_core_warn(dev, "starting teardown\n"); break; case MLX5_NIC_IFC_NO_DRAM_NIC: mlx5_core_warn(dev, "Expected to see disabled NIC but it is no dram nic\n"); break; case MLX5_NIC_IFC_SW_RESET: /* The IFC mode field is 3 bits, so it will read 0x7 in 2 cases: * 1. PCI has been disabled (ie. PCI-AER, PF driver unloaded * and this is a VF), this is not recoverable by SW reset. * Logging of this is handled elsewhere. * 2. FW reset has been issued by another function, driver can * be reloaded to recover after the mode switches to * MLX5_NIC_IFC_DISABLED. */ if (dev->priv.health.fatal_error != MLX5_SENSOR_PCI_COMM_ERR) mlx5_core_warn(dev, "NIC SW reset in progress\n"); break; default: mlx5_core_warn(dev, "Expected to see disabled NIC but it is has invalid value %d\n", nic_interface); } mlx5_disable_device(dev); } int mlx5_health_wait_pci_up(struct mlx5_core_dev *dev) { unsigned long end; end = jiffies + msecs_to_jiffies(mlx5_tout_ms(dev, FW_RESET)); while (sensor_pci_not_working(dev)) { if (time_after(jiffies, end)) return -ETIMEDOUT; msleep(100); } return 0; } static int mlx5_health_try_recover(struct mlx5_core_dev *dev) { mlx5_core_warn(dev, "handling bad device here\n"); mlx5_handle_bad_state(dev); if (mlx5_health_wait_pci_up(dev)) { mlx5_core_err(dev, "health recovery flow aborted, PCI reads still not working\n"); return -EIO; } mlx5_core_err(dev, "starting health recovery flow\n"); if (mlx5_recover_device(dev) || mlx5_health_check_fatal_sensors(dev)) { mlx5_core_err(dev, "health recovery failed\n"); return -EIO; } mlx5_core_info(dev, "health recovery succeeded\n"); return 0; } static const char *hsynd_str(u8 synd) { switch (synd) { case MLX5_HEALTH_SYNDR_FW_ERR: return "firmware internal error"; case MLX5_HEALTH_SYNDR_IRISC_ERR: return "irisc not responding"; case MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR: return "unrecoverable hardware error"; case MLX5_HEALTH_SYNDR_CRC_ERR: return "firmware CRC error"; case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR: return "ICM fetch PCI error"; case MLX5_HEALTH_SYNDR_HW_FTL_ERR: return "HW fatal error\n"; case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR: return "async EQ buffer overrun"; case MLX5_HEALTH_SYNDR_EQ_ERR: return "EQ error"; case MLX5_HEALTH_SYNDR_EQ_INV: return "Invalid EQ referenced"; case MLX5_HEALTH_SYNDR_FFSER_ERR: return "FFSER error"; case MLX5_HEALTH_SYNDR_HIGH_TEMP: return "High temperature"; default: return "unrecognized error"; } } static const char *mlx5_loglevel_str(int level) { switch (level) { case LOGLEVEL_EMERG: return "EMERGENCY"; case LOGLEVEL_ALERT: return "ALERT"; case LOGLEVEL_CRIT: return "CRITICAL"; case LOGLEVEL_ERR: return "ERROR"; case LOGLEVEL_WARNING: return "WARNING"; case LOGLEVEL_NOTICE: return "NOTICE"; case LOGLEVEL_INFO: return "INFO"; case LOGLEVEL_DEBUG: return "DEBUG"; } return "Unknown log level"; } static int mlx5_health_get_severity(u8 rfr_severity) { return rfr_severity & MLX5_SEVERITY_VALID_MASK ? rfr_severity & MLX5_SEVERITY_MASK : LOGLEVEL_ERR; } static void print_health_info(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; u8 rfr_severity; int severity; int i; /* If the syndrome is 0, the device is OK and no need to print buffer */ if (!ioread8(&h->synd)) return; if (ioread32be(&h->fw_ver) == 0xFFFFFFFF) { mlx5_log(dev, LOGLEVEL_ERR, "PCI slot is unavailable\n"); return; } rfr_severity = ioread8(&h->rfr_severity); severity = mlx5_health_get_severity(rfr_severity); mlx5_log(dev, severity, "Health issue observed, %s, severity(%d) %s:\n", hsynd_str(ioread8(&h->synd)), severity, mlx5_loglevel_str(severity)); for (i = 0; i < ARRAY_SIZE(h->assert_var); i++) mlx5_log(dev, severity, "assert_var[%d] 0x%08x\n", i, ioread32be(h->assert_var + i)); mlx5_log(dev, severity, "assert_exit_ptr 0x%08x\n", ioread32be(&h->assert_exit_ptr)); mlx5_log(dev, severity, "assert_callra 0x%08x\n", ioread32be(&h->assert_callra)); mlx5_log(dev, severity, "fw_ver %d.%d.%d", fw_rev_maj(dev), fw_rev_min(dev), fw_rev_sub(dev)); mlx5_log(dev, severity, "time %u\n", ioread32be(&h->time)); mlx5_log(dev, severity, "hw_id 0x%08x\n", ioread32be(&h->hw_id)); mlx5_log(dev, severity, "rfr %d\n", mlx5_health_get_rfr(rfr_severity)); mlx5_log(dev, severity, "severity %d (%s)\n", severity, mlx5_loglevel_str(severity)); mlx5_log(dev, severity, "irisc_index %d\n", ioread8(&h->irisc_index)); mlx5_log(dev, severity, "synd 0x%x: %s\n", ioread8(&h->synd), hsynd_str(ioread8(&h->synd))); mlx5_log(dev, severity, "ext_synd 0x%04x\n", ioread16be(&h->ext_synd)); mlx5_log(dev, severity, "raw fw_ver 0x%08x\n", ioread32be(&h->fw_ver)); } static int mlx5_fw_reporter_diagnose(struct devlink_health_reporter *reporter, struct devlink_fmsg *fmsg, struct netlink_ext_ack *extack) { struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter); struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; u8 synd; int err; synd = ioread8(&h->synd); err = devlink_fmsg_u8_pair_put(fmsg, "Syndrome", synd); if (err || !synd) return err; return devlink_fmsg_string_pair_put(fmsg, "Description", hsynd_str(synd)); } struct mlx5_fw_reporter_ctx { u8 err_synd; int miss_counter; }; static int mlx5_fw_reporter_ctx_pairs_put(struct devlink_fmsg *fmsg, struct mlx5_fw_reporter_ctx *fw_reporter_ctx) { int err; err = devlink_fmsg_u8_pair_put(fmsg, "syndrome", fw_reporter_ctx->err_synd); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "fw_miss_counter", fw_reporter_ctx->miss_counter); if (err) return err; return 0; } static int mlx5_fw_reporter_heath_buffer_data_put(struct mlx5_core_dev *dev, struct devlink_fmsg *fmsg) { struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; u8 rfr_severity; int err; int i; if (!ioread8(&h->synd)) return 0; err = devlink_fmsg_pair_nest_start(fmsg, "health buffer"); if (err) return err; err = devlink_fmsg_obj_nest_start(fmsg); if (err) return err; err = devlink_fmsg_arr_pair_nest_start(fmsg, "assert_var"); if (err) return err; for (i = 0; i < ARRAY_SIZE(h->assert_var); i++) { err = devlink_fmsg_u32_put(fmsg, ioread32be(h->assert_var + i)); if (err) return err; } err = devlink_fmsg_arr_pair_nest_end(fmsg); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "assert_exit_ptr", ioread32be(&h->assert_exit_ptr)); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "assert_callra", ioread32be(&h->assert_callra)); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "time", ioread32be(&h->time)); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "hw_id", ioread32be(&h->hw_id)); if (err) return err; rfr_severity = ioread8(&h->rfr_severity); err = devlink_fmsg_u8_pair_put(fmsg, "rfr", mlx5_health_get_rfr(rfr_severity)); if (err) return err; err = devlink_fmsg_u8_pair_put(fmsg, "severity", mlx5_health_get_severity(rfr_severity)); if (err) return err; err = devlink_fmsg_u8_pair_put(fmsg, "irisc_index", ioread8(&h->irisc_index)); if (err) return err; err = devlink_fmsg_u8_pair_put(fmsg, "synd", ioread8(&h->synd)); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "ext_synd", ioread16be(&h->ext_synd)); if (err) return err; err = devlink_fmsg_u32_pair_put(fmsg, "raw_fw_ver", ioread32be(&h->fw_ver)); if (err) return err; err = devlink_fmsg_obj_nest_end(fmsg); if (err) return err; return devlink_fmsg_pair_nest_end(fmsg); } static int mlx5_fw_reporter_dump(struct devlink_health_reporter *reporter, struct devlink_fmsg *fmsg, void *priv_ctx, struct netlink_ext_ack *extack) { struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter); int err; err = mlx5_fw_tracer_trigger_core_dump_general(dev); if (err) return err; if (priv_ctx) { struct mlx5_fw_reporter_ctx *fw_reporter_ctx = priv_ctx; err = mlx5_fw_reporter_ctx_pairs_put(fmsg, fw_reporter_ctx); if (err) return err; } err = mlx5_fw_reporter_heath_buffer_data_put(dev, fmsg); if (err) return err; return mlx5_fw_tracer_get_saved_traces_objects(dev->tracer, fmsg); } static void mlx5_fw_reporter_err_work(struct work_struct *work) { struct mlx5_fw_reporter_ctx fw_reporter_ctx; struct mlx5_core_health *health; health = container_of(work, struct mlx5_core_health, report_work); if (IS_ERR_OR_NULL(health->fw_reporter)) return; fw_reporter_ctx.err_synd = health->synd; fw_reporter_ctx.miss_counter = health->miss_counter; if (fw_reporter_ctx.err_synd) { devlink_health_report(health->fw_reporter, "FW syndrome reported", &fw_reporter_ctx); return; } if (fw_reporter_ctx.miss_counter) devlink_health_report(health->fw_reporter, "FW miss counter reported", &fw_reporter_ctx); } static const struct devlink_health_reporter_ops mlx5_fw_reporter_ops = { .name = "fw", .diagnose = mlx5_fw_reporter_diagnose, .dump = mlx5_fw_reporter_dump, }; static int mlx5_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter, void *priv_ctx, struct netlink_ext_ack *extack) { struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter); return mlx5_health_try_recover(dev); } static int mlx5_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter, struct devlink_fmsg *fmsg, void *priv_ctx, struct netlink_ext_ack *extack) { struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter); u32 crdump_size = dev->priv.health.crdump_size; u32 *cr_data; int err; if (!mlx5_core_is_pf(dev)) return -EPERM; cr_data = kvmalloc(crdump_size, GFP_KERNEL); if (!cr_data) return -ENOMEM; err = mlx5_crdump_collect(dev, cr_data); if (err) goto free_data; if (priv_ctx) { struct mlx5_fw_reporter_ctx *fw_reporter_ctx = priv_ctx; err = mlx5_fw_reporter_ctx_pairs_put(fmsg, fw_reporter_ctx); if (err) goto free_data; } err = devlink_fmsg_binary_pair_put(fmsg, "crdump_data", cr_data, crdump_size); free_data: kvfree(cr_data); return err; } static void mlx5_fw_fatal_reporter_err_work(struct work_struct *work) { struct mlx5_fw_reporter_ctx fw_reporter_ctx; struct mlx5_core_health *health; struct mlx5_core_dev *dev; struct devlink *devlink; struct mlx5_priv *priv; health = container_of(work, struct mlx5_core_health, fatal_report_work); priv = container_of(health, struct mlx5_priv, health); dev = container_of(priv, struct mlx5_core_dev, priv); devlink = priv_to_devlink(dev); enter_error_state(dev, false); if (IS_ERR_OR_NULL(health->fw_fatal_reporter)) { devl_lock(devlink); if (mlx5_health_try_recover(dev)) mlx5_core_err(dev, "health recovery failed\n"); devl_unlock(devlink); return; } fw_reporter_ctx.err_synd = health->synd; fw_reporter_ctx.miss_counter = health->miss_counter; if (devlink_health_report(health->fw_fatal_reporter, "FW fatal error reported", &fw_reporter_ctx) == -ECANCELED) { /* If recovery wasn't performed, due to grace period, * unload the driver. This ensures that the driver * closes all its resources and it is not subjected to * requests from the kernel. */ mlx5_core_err(dev, "Driver is in error state. Unloading\n"); mlx5_unload_one(dev); } } static const struct devlink_health_reporter_ops mlx5_fw_fatal_reporter_ops = { .name = "fw_fatal", .recover = mlx5_fw_fatal_reporter_recover, .dump = mlx5_fw_fatal_reporter_dump, }; #define MLX5_FW_REPORTER_ECPF_GRACEFUL_PERIOD 180000 #define MLX5_FW_REPORTER_PF_GRACEFUL_PERIOD 60000 #define MLX5_FW_REPORTER_VF_GRACEFUL_PERIOD 30000 #define MLX5_FW_REPORTER_DEFAULT_GRACEFUL_PERIOD MLX5_FW_REPORTER_VF_GRACEFUL_PERIOD static void mlx5_fw_reporters_create(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; struct devlink *devlink = priv_to_devlink(dev); u64 grace_period; if (mlx5_core_is_ecpf(dev)) { grace_period = MLX5_FW_REPORTER_ECPF_GRACEFUL_PERIOD; } else if (mlx5_core_is_pf(dev)) { grace_period = MLX5_FW_REPORTER_PF_GRACEFUL_PERIOD; } else { /* VF or SF */ grace_period = MLX5_FW_REPORTER_DEFAULT_GRACEFUL_PERIOD; } health->fw_reporter = devlink_health_reporter_create(devlink, &mlx5_fw_reporter_ops, 0, dev); if (IS_ERR(health->fw_reporter)) mlx5_core_warn(dev, "Failed to create fw reporter, err = %ld\n", PTR_ERR(health->fw_reporter)); health->fw_fatal_reporter = devlink_health_reporter_create(devlink, &mlx5_fw_fatal_reporter_ops, grace_period, dev); if (IS_ERR(health->fw_fatal_reporter)) mlx5_core_warn(dev, "Failed to create fw fatal reporter, err = %ld\n", PTR_ERR(health->fw_fatal_reporter)); } static void mlx5_fw_reporters_destroy(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; if (!IS_ERR_OR_NULL(health->fw_reporter)) devlink_health_reporter_destroy(health->fw_reporter); if (!IS_ERR_OR_NULL(health->fw_fatal_reporter)) devlink_health_reporter_destroy(health->fw_fatal_reporter); } static unsigned long get_next_poll_jiffies(struct mlx5_core_dev *dev) { unsigned long next; get_random_bytes(&next, sizeof(next)); next %= HZ; next += jiffies + msecs_to_jiffies(mlx5_tout_ms(dev, HEALTH_POLL_INTERVAL)); return next; } void mlx5_trigger_health_work(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; unsigned long flags; spin_lock_irqsave(&health->wq_lock, flags); if (!test_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags)) queue_work(health->wq, &health->fatal_report_work); else mlx5_core_err(dev, "new health works are not permitted at this stage\n"); spin_unlock_irqrestore(&health->wq_lock, flags); } #define MLX5_MSEC_PER_HOUR (MSEC_PER_SEC * 60 * 60) static void mlx5_health_log_ts_update(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); u32 out[MLX5_ST_SZ_DW(mrtc_reg)] = {}; u32 in[MLX5_ST_SZ_DW(mrtc_reg)] = {}; struct mlx5_core_health *health; struct mlx5_core_dev *dev; struct mlx5_priv *priv; u64 now_us; health = container_of(dwork, struct mlx5_core_health, update_fw_log_ts_work); priv = container_of(health, struct mlx5_priv, health); dev = container_of(priv, struct mlx5_core_dev, priv); now_us = ktime_to_us(ktime_get_real()); MLX5_SET(mrtc_reg, in, time_h, now_us >> 32); MLX5_SET(mrtc_reg, in, time_l, now_us & 0xFFFFFFFF); mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out), MLX5_REG_MRTC, 0, 1); queue_delayed_work(health->wq, &health->update_fw_log_ts_work, msecs_to_jiffies(MLX5_MSEC_PER_HOUR)); } static void poll_health(struct timer_list *t) { struct mlx5_core_dev *dev = from_timer(dev, t, priv.health.timer); struct mlx5_core_health *health = &dev->priv.health; struct health_buffer __iomem *h = health->health; u32 fatal_error; u8 prev_synd; u32 count; if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) goto out; fatal_error = mlx5_health_check_fatal_sensors(dev); if (fatal_error && !health->fatal_error) { mlx5_core_err(dev, "Fatal error %u detected\n", fatal_error); dev->priv.health.fatal_error = fatal_error; print_health_info(dev); dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR; mlx5_trigger_health_work(dev); return; } count = ioread32be(health->health_counter); if (count == health->prev) ++health->miss_counter; else health->miss_counter = 0; health->prev = count; if (health->miss_counter == MAX_MISSES) { mlx5_core_err(dev, "device's health compromised - reached miss count\n"); print_health_info(dev); queue_work(health->wq, &health->report_work); } prev_synd = health->synd; health->synd = ioread8(&h->synd); if (health->synd && health->synd != prev_synd) queue_work(health->wq, &health->report_work); out: mod_timer(&health->timer, get_next_poll_jiffies(dev)); } void mlx5_start_health_poll(struct mlx5_core_dev *dev) { u64 poll_interval_ms = mlx5_tout_ms(dev, HEALTH_POLL_INTERVAL); struct mlx5_core_health *health = &dev->priv.health; timer_setup(&health->timer, poll_health, 0); health->fatal_error = MLX5_SENSOR_NO_ERR; clear_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags); health->health = &dev->iseg->health; health->health_counter = &dev->iseg->health_counter; health->timer.expires = jiffies + msecs_to_jiffies(poll_interval_ms); add_timer(&health->timer); } void mlx5_stop_health_poll(struct mlx5_core_dev *dev, bool disable_health) { struct mlx5_core_health *health = &dev->priv.health; unsigned long flags; if (disable_health) { spin_lock_irqsave(&health->wq_lock, flags); set_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags); spin_unlock_irqrestore(&health->wq_lock, flags); } del_timer_sync(&health->timer); } void mlx5_start_health_fw_log_up(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; if (mlx5_core_is_pf(dev) && MLX5_CAP_MCAM_REG(dev, mrtc)) queue_delayed_work(health->wq, &health->update_fw_log_ts_work, 0); } void mlx5_drain_health_wq(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; unsigned long flags; spin_lock_irqsave(&health->wq_lock, flags); set_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags); spin_unlock_irqrestore(&health->wq_lock, flags); cancel_delayed_work_sync(&health->update_fw_log_ts_work); cancel_work_sync(&health->report_work); cancel_work_sync(&health->fatal_report_work); } void mlx5_health_cleanup(struct mlx5_core_dev *dev) { struct mlx5_core_health *health = &dev->priv.health; cancel_delayed_work_sync(&health->update_fw_log_ts_work); destroy_workqueue(health->wq); mlx5_fw_reporters_destroy(dev); } int mlx5_health_init(struct mlx5_core_dev *dev) { struct mlx5_core_health *health; char *name; mlx5_fw_reporters_create(dev); health = &dev->priv.health; name = kmalloc(64, GFP_KERNEL); if (!name) goto out_err; strcpy(name, "mlx5_health"); strcat(name, dev_name(dev->device)); health->wq = create_singlethread_workqueue(name); kfree(name); if (!health->wq) goto out_err; spin_lock_init(&health->wq_lock); INIT_WORK(&health->fatal_report_work, mlx5_fw_fatal_reporter_err_work); INIT_WORK(&health->report_work, mlx5_fw_reporter_err_work); INIT_DELAYED_WORK(&health->update_fw_log_ts_work, mlx5_health_log_ts_update); return 0; out_err: mlx5_fw_reporters_destroy(dev); return -ENOMEM; }