diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 59 |
1 files changed, 53 insertions, 6 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c index 56ae72e016f1..f5ffb6fc55c3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c @@ -5,6 +5,7 @@ enum { MLX5_FW_RESET_FLAGS_RESET_REQUESTED, + MLX5_FW_RESET_FLAGS_PENDING_COMP }; struct mlx5_fw_reset { @@ -17,6 +18,8 @@ struct mlx5_fw_reset { struct work_struct reset_abort_work; unsigned long reset_flags; struct timer_list timer; + struct completion done; + int ret; }; static int mlx5_reg_mfrl_set(struct mlx5_core_dev *dev, u8 reset_level, @@ -58,7 +61,14 @@ int mlx5_fw_reset_query(struct mlx5_core_dev *dev, u8 *reset_level, u8 *reset_ty int mlx5_fw_reset_set_reset_sync(struct mlx5_core_dev *dev, u8 reset_type_sel) { - return mlx5_reg_mfrl_set(dev, MLX5_MFRL_REG_RESET_LEVEL3, reset_type_sel, 0, true); + struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset; + int err; + + set_bit(MLX5_FW_RESET_FLAGS_PENDING_COMP, &fw_reset->reset_flags); + err = mlx5_reg_mfrl_set(dev, MLX5_MFRL_REG_RESET_LEVEL3, reset_type_sel, 0, true); + if (err) + clear_bit(MLX5_FW_RESET_FLAGS_PENDING_COMP, &fw_reset->reset_flags); + return err; } int mlx5_fw_reset_set_live_patch(struct mlx5_core_dev *dev) @@ -66,19 +76,35 @@ int mlx5_fw_reset_set_live_patch(struct mlx5_core_dev *dev) return mlx5_reg_mfrl_set(dev, MLX5_MFRL_REG_RESET_LEVEL0, 0, 0, false); } +static void mlx5_fw_reset_complete_reload(struct mlx5_core_dev *dev) +{ + struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset; + + /* if this is the driver that initiated the fw reset, devlink completed the reload */ + if (test_bit(MLX5_FW_RESET_FLAGS_PENDING_COMP, &fw_reset->reset_flags)) { + complete(&fw_reset->done); + } else { + mlx5_load_one(dev, false); + devlink_remote_reload_actions_performed(priv_to_devlink(dev), 0, + BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | + BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE)); + } +} + static void mlx5_sync_reset_reload_work(struct work_struct *work) { struct mlx5_fw_reset *fw_reset = container_of(work, struct mlx5_fw_reset, reset_reload_work); struct mlx5_core_dev *dev = fw_reset->dev; + int err; mlx5_enter_error_state(dev, true); mlx5_unload_one(dev, false); - if (mlx5_health_wait_pci_up(dev)) { + err = mlx5_health_wait_pci_up(dev); + if (err) mlx5_core_err(dev, "reset reload flow aborted, PCI reads still not working\n"); - return; - } - mlx5_load_one(dev, false); + fw_reset->ret = err; + mlx5_fw_reset_complete_reload(dev); } static void mlx5_stop_sync_reset_poll(struct mlx5_core_dev *dev) @@ -269,7 +295,8 @@ static void mlx5_sync_reset_now_event(struct work_struct *work) mlx5_enter_error_state(dev, true); mlx5_unload_one(dev, false); done: - mlx5_load_one(dev, false); + fw_reset->ret = err; + mlx5_fw_reset_complete_reload(dev); } static void mlx5_sync_reset_abort_event(struct work_struct *work) @@ -318,6 +345,25 @@ static int fw_reset_event_notifier(struct notifier_block *nb, unsigned long acti return NOTIFY_OK; } +#define MLX5_FW_RESET_TIMEOUT_MSEC 5000 +int mlx5_fw_reset_wait_reset_done(struct mlx5_core_dev *dev) +{ + unsigned long timeout = msecs_to_jiffies(MLX5_FW_RESET_TIMEOUT_MSEC); + struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset; + int err; + + if (!wait_for_completion_timeout(&fw_reset->done, timeout)) { + mlx5_core_warn(dev, "FW sync reset timeout after %d seconds\n", + MLX5_FW_RESET_TIMEOUT_MSEC / 1000); + err = -ETIMEDOUT; + goto out; + } + err = fw_reset->ret; +out: + clear_bit(MLX5_FW_RESET_FLAGS_PENDING_COMP, &fw_reset->reset_flags); + return err; +} + void mlx5_fw_reset_events_start(struct mlx5_core_dev *dev) { struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset; @@ -351,6 +397,7 @@ int mlx5_fw_reset_init(struct mlx5_core_dev *dev) INIT_WORK(&fw_reset->reset_now_work, mlx5_sync_reset_now_event); INIT_WORK(&fw_reset->reset_abort_work, mlx5_sync_reset_abort_event); + init_completion(&fw_reset->done); return 0; } |