From: Gavin Li gavinl@nvidia.com
[ Upstream commit 37ca95e62ee23fa6d2c2c64e3dc40b4a0c0146dc ]
Currently, health recovery will reload driver to recover it from fatal errors. During the driver's load process, it would wait for FW to set the pre-init bit for up to 120 seconds, beyond this threshold it would abort the load process. In some cases, such as a FW upgrade on the DPU, this timeout period is insufficient, and the user has no way to recover the host device.
To solve this issue, introduce a new FW pre-init timeout for health recovery, which is set to 2 hours.
The timeout for devlink reload and probe will use the original one because they are user triggered flows, and therefore should not have a significantly long timeout, during which the user command would hang.
Signed-off-by: Gavin Li gavinl@nvidia.com Reviewed-by: Moshe Shemesh moshe@nvidia.com Reviewed-by: Shay Drory shayd@nvidia.com Signed-off-by: Saeed Mahameed saeedm@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/mellanox/mlx5/core/devlink.c | 4 ++-- .../ethernet/mellanox/mlx5/core/fw_reset.c | 2 +- .../ethernet/mellanox/mlx5/core/lib/tout.c | 1 + .../ethernet/mellanox/mlx5/core/lib/tout.h | 1 + .../net/ethernet/mellanox/mlx5/core/main.c | 23 +++++++++++-------- .../ethernet/mellanox/mlx5/core/mlx5_core.h | 2 +- 6 files changed, 20 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c index 057dde6f4417..9401127fb0ec 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c @@ -178,13 +178,13 @@ static int mlx5_devlink_reload_up(struct devlink *devlink, enum devlink_reload_a *actions_performed = BIT(action); switch (action) { case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: - return mlx5_load_one(dev); + return mlx5_load_one(dev, false); case DEVLINK_RELOAD_ACTION_FW_ACTIVATE: if (limit == DEVLINK_RELOAD_LIMIT_NO_RESET) break; /* On fw_activate action, also driver is reloaded and reinit performed */ *actions_performed |= BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT); - return mlx5_load_one(dev); + return mlx5_load_one(dev, false); default: /* Unsupported action should not get to this function */ WARN_ON(1); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c index 81eb67fb95b0..052af4901c0b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c @@ -149,7 +149,7 @@ static void mlx5_fw_reset_complete_reload(struct mlx5_core_dev *dev) if (test_bit(MLX5_FW_RESET_FLAGS_PENDING_COMP, &fw_reset->reset_flags)) { complete(&fw_reset->done); } else { - mlx5_load_one(dev); + 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)); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c index c1df0d3595d8..d758848d34d0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.c @@ -10,6 +10,7 @@ struct mlx5_timeouts {
static const u32 tout_def_sw_val[MAX_TIMEOUT_TYPES] = { [MLX5_TO_FW_PRE_INIT_TIMEOUT_MS] = 120000, + [MLX5_TO_FW_PRE_INIT_ON_RECOVERY_TIMEOUT_MS] = 7200000, [MLX5_TO_FW_PRE_INIT_WARN_MESSAGE_INTERVAL_MS] = 20000, [MLX5_TO_FW_PRE_INIT_WAIT_MS] = 2, [MLX5_TO_FW_INIT_MS] = 2000, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h index 1c42ead782fa..257c03eeab36 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/tout.h @@ -7,6 +7,7 @@ enum mlx5_timeouts_types { /* pre init timeouts (not read from FW) */ MLX5_TO_FW_PRE_INIT_TIMEOUT_MS, + MLX5_TO_FW_PRE_INIT_ON_RECOVERY_TIMEOUT_MS, MLX5_TO_FW_PRE_INIT_WARN_MESSAGE_INTERVAL_MS, MLX5_TO_FW_PRE_INIT_WAIT_MS,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index ef196cb764e2..8b5263699994 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1014,7 +1014,7 @@ static void mlx5_cleanup_once(struct mlx5_core_dev *dev) mlx5_devcom_unregister_device(dev->priv.devcom); }
-static int mlx5_function_setup(struct mlx5_core_dev *dev, bool boot) +static int mlx5_function_setup(struct mlx5_core_dev *dev, u64 timeout) { int err;
@@ -1029,11 +1029,11 @@ static int mlx5_function_setup(struct mlx5_core_dev *dev, bool boot)
/* wait for firmware to accept initialization segments configurations */ - err = wait_fw_init(dev, mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT), + err = wait_fw_init(dev, timeout, mlx5_tout_ms(dev, FW_PRE_INIT_WARN_MESSAGE_INTERVAL)); if (err) { mlx5_core_err(dev, "Firmware over %llu MS in pre-initializing state, aborting\n", - mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT)); + timeout); return err; }
@@ -1296,7 +1296,7 @@ int mlx5_init_one(struct mlx5_core_dev *dev) mutex_lock(&dev->intf_state_mutex); dev->state = MLX5_DEVICE_STATE_UP;
- err = mlx5_function_setup(dev, true); + err = mlx5_function_setup(dev, mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT)); if (err) goto err_function;
@@ -1360,9 +1360,10 @@ void mlx5_uninit_one(struct mlx5_core_dev *dev) mutex_unlock(&dev->intf_state_mutex); }
-int mlx5_load_one(struct mlx5_core_dev *dev) +int mlx5_load_one(struct mlx5_core_dev *dev, bool recovery) { int err = 0; + u64 timeout;
mutex_lock(&dev->intf_state_mutex); if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) { @@ -1372,7 +1373,11 @@ int mlx5_load_one(struct mlx5_core_dev *dev) /* remove any previous indication of internal error */ dev->state = MLX5_DEVICE_STATE_UP;
- err = mlx5_function_setup(dev, false); + if (recovery) + timeout = mlx5_tout_ms(dev, FW_PRE_INIT_ON_RECOVERY_TIMEOUT); + else + timeout = mlx5_tout_ms(dev, FW_PRE_INIT_TIMEOUT); + err = mlx5_function_setup(dev, timeout); if (err) goto err_function;
@@ -1746,7 +1751,7 @@ static void mlx5_pci_resume(struct pci_dev *pdev)
mlx5_pci_trace(dev, "Enter, loading driver..\n");
- err = mlx5_load_one(dev); + err = mlx5_load_one(dev, false);
mlx5_pci_trace(dev, "Done, err = %d, device %s\n", err, !err ? "recovered" : "Failed"); @@ -1833,7 +1838,7 @@ static int mlx5_resume(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
- return mlx5_load_one(dev); + return mlx5_load_one(dev, false); }
static const struct pci_device_id mlx5_core_pci_table[] = { @@ -1878,7 +1883,7 @@ int mlx5_recover_device(struct mlx5_core_dev *dev) return -EIO; }
- return mlx5_load_one(dev); + return mlx5_load_one(dev, true); }
static struct pci_driver mlx5_core_driver = { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h index a9b2d6ead542..9026be1d6223 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h @@ -290,7 +290,7 @@ void mlx5_mdev_uninit(struct mlx5_core_dev *dev); int mlx5_init_one(struct mlx5_core_dev *dev); void mlx5_uninit_one(struct mlx5_core_dev *dev); void mlx5_unload_one(struct mlx5_core_dev *dev); -int mlx5_load_one(struct mlx5_core_dev *dev); +int mlx5_load_one(struct mlx5_core_dev *dev, bool recovery);
int mlx5_vport_get_other_func_cap(struct mlx5_core_dev *dev, u16 function_id, void *out);