/*
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* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/random.h>
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#include <linux/vmalloc.h>
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#include <linux/hardirq.h>
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#include <linux/mlx5/driver.h>
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#include "mlx5_core.h"
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#include "lib/eq.h"
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#include "lib/mlx5.h"
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#include "lib/pci_vsc.h"
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#include "diag/fw_tracer.h"
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enum {
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MLX5_HEALTH_POLL_INTERVAL = 2 * HZ,
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MAX_MISSES = 3,
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};
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enum {
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MLX5_HEALTH_SYNDR_FW_ERR = 0x1,
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MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7,
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MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR = 0x8,
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MLX5_HEALTH_SYNDR_CRC_ERR = 0x9,
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MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa,
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MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb,
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MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc,
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MLX5_HEALTH_SYNDR_EQ_ERR = 0xd,
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MLX5_HEALTH_SYNDR_EQ_INV = 0xe,
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MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf,
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MLX5_HEALTH_SYNDR_HIGH_TEMP = 0x10
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};
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enum {
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MLX5_DROP_NEW_HEALTH_WORK,
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};
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enum {
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MLX5_SENSOR_NO_ERR = 0,
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MLX5_SENSOR_PCI_COMM_ERR = 1,
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MLX5_SENSOR_PCI_ERR = 2,
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MLX5_SENSOR_NIC_DISABLED = 3,
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MLX5_SENSOR_NIC_SW_RESET = 4,
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MLX5_SENSOR_FW_SYND_RFR = 5,
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};
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u8 mlx5_get_nic_state(struct mlx5_core_dev *dev)
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{
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return (ioread32be(&dev->iseg->cmdq_addr_l_sz) >> 8) & 7;
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}
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void mlx5_set_nic_state(struct mlx5_core_dev *dev, u8 state)
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{
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u32 cur_cmdq_addr_l_sz;
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cur_cmdq_addr_l_sz = ioread32be(&dev->iseg->cmdq_addr_l_sz);
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iowrite32be((cur_cmdq_addr_l_sz & 0xFFFFF000) |
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state << MLX5_NIC_IFC_OFFSET,
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&dev->iseg->cmdq_addr_l_sz);
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}
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static bool sensor_pci_not_working(struct mlx5_core_dev *dev)
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{
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struct mlx5_core_health *health = &dev->priv.health;
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struct health_buffer __iomem *h = health->health;
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/* Offline PCI reads return 0xffffffff */
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return (ioread32be(&h->fw_ver) == 0xffffffff);
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}
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static bool sensor_fw_synd_rfr(struct mlx5_core_dev *dev)
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{
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struct mlx5_core_health *health = &dev->priv.health;
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struct health_buffer __iomem *h = health->health;
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u32 rfr = ioread32be(&h->rfr) >> MLX5_RFR_OFFSET;
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u8 synd = ioread8(&h->synd);
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if (rfr && synd)
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mlx5_core_dbg(dev, "FW requests reset, synd: %d\n", synd);
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return rfr && synd;
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}
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u32 mlx5_health_check_fatal_sensors(struct mlx5_core_dev *dev)
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{
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if (sensor_pci_not_working(dev))
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return MLX5_SENSOR_PCI_COMM_ERR;
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if (pci_channel_offline(dev->pdev))
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return MLX5_SENSOR_PCI_ERR;
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if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_DISABLED)
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return MLX5_SENSOR_NIC_DISABLED;
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if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_SW_RESET)
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return MLX5_SENSOR_NIC_SW_RESET;
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if (sensor_fw_synd_rfr(dev))
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return MLX5_SENSOR_FW_SYND_RFR;
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return MLX5_SENSOR_NO_ERR;
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}
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static int lock_sem_sw_reset(struct mlx5_core_dev *dev, bool lock)
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{
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enum mlx5_vsc_state state;
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int ret;
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if (!mlx5_core_is_pf(dev))
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return -EBUSY;
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/* Try to lock GW access, this stage doesn't return
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* EBUSY because locked GW does not mean that other PF
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* already started the reset.
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*/
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ret = mlx5_vsc_gw_lock(dev);
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if (ret == -EBUSY)
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return -EINVAL;
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if (ret)
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return ret;
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state = lock ? MLX5_VSC_LOCK : MLX5_VSC_UNLOCK;
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/* At this stage, if the return status == EBUSY, then we know
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* for sure that another PF started the reset, so don't allow
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* another reset.
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*/
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ret = mlx5_vsc_sem_set_space(dev, MLX5_SEMAPHORE_SW_RESET, state);
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if (ret)
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mlx5_core_warn(dev, "Failed to lock SW reset semaphore\n");
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/* Unlock GW access */
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mlx5_vsc_gw_unlock(dev);
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return ret;
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}
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static bool reset_fw_if_needed(struct mlx5_core_dev *dev)
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{
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bool supported = (ioread32be(&dev->iseg->initializing) >>
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MLX5_FW_RESET_SUPPORTED_OFFSET) & 1;
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u32 fatal_error;
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if (!supported)
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return false;
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/* The reset only needs to be issued by one PF. The health buffer is
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* shared between all functions, and will be cleared during a reset.
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* Check again to avoid a redundant 2nd reset. If the fatal erros was
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* PCI related a reset won't help.
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*/
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fatal_error = mlx5_health_check_fatal_sensors(dev);
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if (fatal_error == MLX5_SENSOR_PCI_COMM_ERR ||
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fatal_error == MLX5_SENSOR_NIC_DISABLED ||
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fatal_error == MLX5_SENSOR_NIC_SW_RESET) {
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mlx5_core_warn(dev, "Not issuing FW reset. Either it's already done or won't help.");
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return false;
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}
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mlx5_core_warn(dev, "Issuing FW Reset\n");
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/* Write the NIC interface field to initiate the reset, the command
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* interface address also resides here, don't overwrite it.
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*/
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mlx5_set_nic_state(dev, MLX5_NIC_IFC_SW_RESET);
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return true;
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}
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static void enter_error_state(struct mlx5_core_dev *dev, bool force)
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{
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if (mlx5_health_check_fatal_sensors(dev) || force) { /* protected state setting */
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dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
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mlx5_cmd_flush(dev);
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}
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mlx5_notifier_call_chain(dev->priv.events, MLX5_DEV_EVENT_SYS_ERROR, (void *)1);
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}
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void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force)
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{
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bool err_detected = false;
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/* Mark the device as fatal in order to abort FW commands */
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if ((mlx5_health_check_fatal_sensors(dev) || force) &&
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dev->state == MLX5_DEVICE_STATE_UP) {
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dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
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err_detected = true;
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}
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mutex_lock(&dev->intf_state_mutex);
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if (!err_detected && dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
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goto unlock;/* a previous error is still being handled */
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if (dev->state == MLX5_DEVICE_STATE_UNINITIALIZED) {
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dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
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goto unlock;
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}
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enter_error_state(dev, force);
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unlock:
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mutex_unlock(&dev->intf_state_mutex);
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}
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#define MLX5_CRDUMP_WAIT_MS 60000
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#define MLX5_FW_RESET_WAIT_MS 1000
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void mlx5_error_sw_reset(struct mlx5_core_dev *dev)
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{
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unsigned long end, delay_ms = MLX5_FW_RESET_WAIT_MS;
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int lock = -EBUSY;
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mutex_lock(&dev->intf_state_mutex);
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if (dev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR)
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goto unlock;
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mlx5_core_err(dev, "start\n");
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if (mlx5_health_check_fatal_sensors(dev) == MLX5_SENSOR_FW_SYND_RFR) {
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/* Get cr-dump and reset FW semaphore */
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lock = lock_sem_sw_reset(dev, true);
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if (lock == -EBUSY) {
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delay_ms = MLX5_CRDUMP_WAIT_MS;
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goto recover_from_sw_reset;
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}
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/* Execute SW reset */
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reset_fw_if_needed(dev);
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}
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recover_from_sw_reset:
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/* Recover from SW reset */
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end = jiffies + msecs_to_jiffies(delay_ms);
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do {
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if (mlx5_get_nic_state(dev) == MLX5_NIC_IFC_DISABLED)
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break;
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msleep(20);
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} while (!time_after(jiffies, end));
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if (mlx5_get_nic_state(dev) != MLX5_NIC_IFC_DISABLED) {
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dev_err(&dev->pdev->dev, "NIC IFC still %d after %lums.\n",
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mlx5_get_nic_state(dev), delay_ms);
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}
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/* Release FW semaphore if you are the lock owner */
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if (!lock)
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lock_sem_sw_reset(dev, false);
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mlx5_core_err(dev, "end\n");
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unlock:
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mutex_unlock(&dev->intf_state_mutex);
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}
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static void mlx5_handle_bad_state(struct mlx5_core_dev *dev)
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{
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u8 nic_interface = mlx5_get_nic_state(dev);
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switch (nic_interface) {
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case MLX5_NIC_IFC_FULL:
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mlx5_core_warn(dev, "Expected to see disabled NIC but it is full driver\n");
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break;
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case MLX5_NIC_IFC_DISABLED:
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mlx5_core_warn(dev, "starting teardown\n");
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break;
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case MLX5_NIC_IFC_NO_DRAM_NIC:
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mlx5_core_warn(dev, "Expected to see disabled NIC but it is no dram nic\n");
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break;
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case MLX5_NIC_IFC_SW_RESET:
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/* The IFC mode field is 3 bits, so it will read 0x7 in 2 cases:
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* 1. PCI has been disabled (ie. PCI-AER, PF driver unloaded
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* and this is a VF), this is not recoverable by SW reset.
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* Logging of this is handled elsewhere.
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* 2. FW reset has been issued by another function, driver can
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* be reloaded to recover after the mode switches to
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* MLX5_NIC_IFC_DISABLED.
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*/
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if (dev->priv.health.fatal_error != MLX5_SENSOR_PCI_COMM_ERR)
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mlx5_core_warn(dev, "NIC SW reset in progress\n");
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break;
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default:
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mlx5_core_warn(dev, "Expected to see disabled NIC but it is has invalid value %d\n",
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nic_interface);
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}
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mlx5_disable_device(dev);
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}
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/* How much time to wait until health resetting the driver (in msecs) */
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#define MLX5_RECOVERY_WAIT_MSECS 60000
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int mlx5_health_wait_pci_up(struct mlx5_core_dev *dev)
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{
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unsigned long end;
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end = jiffies + msecs_to_jiffies(MLX5_RECOVERY_WAIT_MSECS);
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while (sensor_pci_not_working(dev)) {
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if (time_after(jiffies, end))
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return -ETIMEDOUT;
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msleep(100);
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}
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return 0;
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}
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static int mlx5_health_try_recover(struct mlx5_core_dev *dev)
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{
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mlx5_core_warn(dev, "handling bad device here\n");
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mlx5_handle_bad_state(dev);
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if (mlx5_health_wait_pci_up(dev)) {
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mlx5_core_err(dev, "health recovery flow aborted, PCI reads still not working\n");
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return -EIO;
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}
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mlx5_core_err(dev, "starting health recovery flow\n");
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mlx5_recover_device(dev);
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if (!test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state) ||
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mlx5_health_check_fatal_sensors(dev)) {
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mlx5_core_err(dev, "health recovery failed\n");
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return -EIO;
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}
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return 0;
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}
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static const char *hsynd_str(u8 synd)
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{
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switch (synd) {
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case MLX5_HEALTH_SYNDR_FW_ERR:
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return "firmware internal error";
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case MLX5_HEALTH_SYNDR_IRISC_ERR:
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return "irisc not responding";
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case MLX5_HEALTH_SYNDR_HW_UNRECOVERABLE_ERR:
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return "unrecoverable hardware error";
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case MLX5_HEALTH_SYNDR_CRC_ERR:
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return "firmware CRC error";
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case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR:
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return "ICM fetch PCI error";
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case MLX5_HEALTH_SYNDR_HW_FTL_ERR:
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return "HW fatal error\n";
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case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR:
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return "async EQ buffer overrun";
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case MLX5_HEALTH_SYNDR_EQ_ERR:
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return "EQ error";
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case MLX5_HEALTH_SYNDR_EQ_INV:
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return "Invalid EQ referenced";
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case MLX5_HEALTH_SYNDR_FFSER_ERR:
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return "FFSER error";
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case MLX5_HEALTH_SYNDR_HIGH_TEMP:
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return "High temperature";
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default:
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return "unrecognized error";
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}
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}
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static void print_health_info(struct mlx5_core_dev *dev)
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{
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struct mlx5_core_health *health = &dev->priv.health;
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struct health_buffer __iomem *h = health->health;
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char fw_str[18];
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u32 fw;
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int i;
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/* If the syndrome is 0, the device is OK and no need to print buffer */
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if (!ioread8(&h->synd))
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return;
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for (i = 0; i < ARRAY_SIZE(h->assert_var); i++)
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mlx5_core_err(dev, "assert_var[%d] 0x%08x\n", i,
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ioread32be(h->assert_var + i));
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mlx5_core_err(dev, "assert_exit_ptr 0x%08x\n",
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ioread32be(&h->assert_exit_ptr));
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mlx5_core_err(dev, "assert_callra 0x%08x\n",
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ioread32be(&h->assert_callra));
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sprintf(fw_str, "%d.%d.%d", fw_rev_maj(dev), fw_rev_min(dev), fw_rev_sub(dev));
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mlx5_core_err(dev, "fw_ver %s\n", fw_str);
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mlx5_core_err(dev, "hw_id 0x%08x\n", ioread32be(&h->hw_id));
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mlx5_core_err(dev, "irisc_index %d\n", ioread8(&h->irisc_index));
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mlx5_core_err(dev, "synd 0x%x: %s\n", ioread8(&h->synd),
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hsynd_str(ioread8(&h->synd)));
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mlx5_core_err(dev, "ext_synd 0x%04x\n", ioread16be(&h->ext_synd));
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fw = ioread32be(&h->fw_ver);
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mlx5_core_err(dev, "raw fw_ver 0x%08x\n", fw);
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}
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static int
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mlx5_fw_reporter_diagnose(struct devlink_health_reporter *reporter,
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struct devlink_fmsg *fmsg,
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struct netlink_ext_ack *extack)
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{
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struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter);
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struct mlx5_core_health *health = &dev->priv.health;
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struct health_buffer __iomem *h = health->health;
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u8 synd;
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int err;
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synd = ioread8(&h->synd);
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err = devlink_fmsg_u8_pair_put(fmsg, "Syndrome", synd);
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if (err || !synd)
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return err;
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return devlink_fmsg_string_pair_put(fmsg, "Description", hsynd_str(synd));
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}
|
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struct mlx5_fw_reporter_ctx {
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u8 err_synd;
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int miss_counter;
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};
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static int
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mlx5_fw_reporter_ctx_pairs_put(struct devlink_fmsg *fmsg,
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struct mlx5_fw_reporter_ctx *fw_reporter_ctx)
|
{
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int err;
|
|
err = devlink_fmsg_u8_pair_put(fmsg, "syndrome",
|
fw_reporter_ctx->err_synd);
|
if (err)
|
return err;
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err = devlink_fmsg_u32_pair_put(fmsg, "fw_miss_counter",
|
fw_reporter_ctx->miss_counter);
|
if (err)
|
return err;
|
return 0;
|
}
|
|
static int
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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;
|
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, "hw_id", ioread32be(&h->hw_id));
|
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 syndrom 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 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);
|
|
mutex_lock(&dev->intf_state_mutex);
|
if (test_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags)) {
|
mlx5_core_err(dev, "health works are not permitted at this stage\n");
|
mutex_unlock(&dev->intf_state_mutex);
|
return;
|
}
|
mutex_unlock(&dev->intf_state_mutex);
|
enter_error_state(dev, false);
|
if (IS_ERR_OR_NULL(health->fw_fatal_reporter)) {
|
if (mlx5_health_try_recover(dev))
|
mlx5_core_err(dev, "health recovery failed\n");
|
return;
|
}
|
fw_reporter_ctx.err_synd = health->synd;
|
fw_reporter_ctx.miss_counter = health->miss_counter;
|
devlink_health_report(health->fw_fatal_reporter,
|
"FW fatal error reported", &fw_reporter_ctx);
|
}
|
|
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_REPORTER_FW_GRACEFUL_PERIOD 1200000
|
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);
|
|
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,
|
MLX5_REPORTER_FW_GRACEFUL_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(void)
|
{
|
unsigned long next;
|
|
get_random_bytes(&next, sizeof(next));
|
next %= HZ;
|
next += jiffies + MLX5_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);
|
}
|
|
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());
|
}
|
|
void mlx5_start_health_poll(struct mlx5_core_dev *dev)
|
{
|
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 = round_jiffies(jiffies + MLX5_HEALTH_POLL_INTERVAL);
|
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_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_work_sync(&health->report_work);
|
cancel_work_sync(&health->fatal_report_work);
|
}
|
|
void mlx5_health_flush(struct mlx5_core_dev *dev)
|
{
|
struct mlx5_core_health *health = &dev->priv.health;
|
|
flush_workqueue(health->wq);
|
}
|
|
void mlx5_health_cleanup(struct mlx5_core_dev *dev)
|
{
|
struct mlx5_core_health *health = &dev->priv.health;
|
|
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);
|
|
return 0;
|
|
out_err:
|
mlx5_fw_reporters_destroy(dev);
|
return -ENOMEM;
|
}
|
