diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index c93512b16121c409d5b58117e71695fcf7324a75..3529b545675d1bfa8caf5306e2ee7df6f83447af 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -113,6 +113,7 @@ struct mlxsw_core { struct mlxsw_thermal *thermal; struct mlxsw_core_port *ports; unsigned int max_ports; + bool reload_fail; unsigned long driver_priv[0]; /* driver_priv has to be always the last item */ }; @@ -962,7 +963,28 @@ mlxsw_devlink_sb_occ_tc_port_bind_get(struct devlink_port *devlink_port, pool_type, p_cur, p_max); } +static int mlxsw_devlink_core_bus_device_reload(struct devlink *devlink) +{ + struct mlxsw_core *mlxsw_core = devlink_priv(devlink); + const struct mlxsw_bus *mlxsw_bus = mlxsw_core->bus; + int err; + + if (!mlxsw_bus->reset) + return -EOPNOTSUPP; + + mlxsw_core_bus_device_unregister(mlxsw_core, true); + mlxsw_bus->reset(mlxsw_core->bus_priv); + err = mlxsw_core_bus_device_register(mlxsw_core->bus_info, + mlxsw_core->bus, + mlxsw_core->bus_priv, true, + devlink); + if (err) + mlxsw_core->reload_fail = true; + return err; +} + static const struct devlink_ops mlxsw_devlink_ops = { + .reload = mlxsw_devlink_core_bus_device_reload, .port_type_set = mlxsw_devlink_port_type_set, .port_split = mlxsw_devlink_port_split, .port_unsplit = mlxsw_devlink_port_unsplit, @@ -980,23 +1002,26 @@ static const struct devlink_ops mlxsw_devlink_ops = { int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, const struct mlxsw_bus *mlxsw_bus, - void *bus_priv) + void *bus_priv, bool reload, + struct devlink *devlink) { const char *device_kind = mlxsw_bus_info->device_kind; struct mlxsw_core *mlxsw_core; struct mlxsw_driver *mlxsw_driver; - struct devlink *devlink; size_t alloc_size; int err; mlxsw_driver = mlxsw_core_driver_get(device_kind); if (!mlxsw_driver) return -EINVAL; - alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; - devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); - if (!devlink) { - err = -ENOMEM; - goto err_devlink_alloc; + + if (!reload) { + alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; + devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); + if (!devlink) { + err = -ENOMEM; + goto err_devlink_alloc; + } } mlxsw_core = devlink_priv(devlink); @@ -1012,7 +1037,7 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, if (err) goto err_bus_init; - if (mlxsw_driver->resources_register) { + if (mlxsw_driver->resources_register && !reload) { err = mlxsw_driver->resources_register(mlxsw_core); if (err) goto err_register_resources; @@ -1038,9 +1063,11 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, if (err) goto err_emad_init; - err = devlink_register(devlink, mlxsw_bus_info->dev); - if (err) - goto err_devlink_register; + if (!reload) { + err = devlink_register(devlink, mlxsw_bus_info->dev); + if (err) + goto err_devlink_register; + } err = mlxsw_hwmon_init(mlxsw_core, mlxsw_bus_info, &mlxsw_core->hwmon); if (err) @@ -1063,7 +1090,8 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, mlxsw_thermal_fini(mlxsw_core->thermal); err_thermal_init: err_hwmon_init: - devlink_unregister(devlink); + if (!reload) + devlink_unregister(devlink); err_devlink_register: mlxsw_emad_fini(mlxsw_core); err_emad_init: @@ -1073,29 +1101,40 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, err_ports_init: mlxsw_bus->fini(bus_priv); err_bus_init: - devlink_resources_unregister(devlink, NULL); + if (!reload) + devlink_resources_unregister(devlink, NULL); err_register_resources: - devlink_free(devlink); + if (!reload) + devlink_free(devlink); err_devlink_alloc: mlxsw_core_driver_put(device_kind); return err; } EXPORT_SYMBOL(mlxsw_core_bus_device_register); -void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core) +void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, + bool reload) { const char *device_kind = mlxsw_core->bus_info->device_kind; struct devlink *devlink = priv_to_devlink(mlxsw_core); + if (mlxsw_core->reload_fail) + goto reload_fail; + if (mlxsw_core->driver->fini) mlxsw_core->driver->fini(mlxsw_core); mlxsw_thermal_fini(mlxsw_core->thermal); - devlink_unregister(devlink); + if (!reload) + devlink_unregister(devlink); mlxsw_emad_fini(mlxsw_core); kfree(mlxsw_core->lag.mapping); mlxsw_ports_fini(mlxsw_core); - devlink_resources_unregister(devlink, NULL); + if (!reload) + devlink_resources_unregister(devlink, NULL); mlxsw_core->bus->fini(mlxsw_core->bus_priv); + if (reload) + return; +reload_fail: devlink_free(devlink); mlxsw_core_driver_put(device_kind); } diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index e44061dfe8c7aa257963baf565020cec4089237e..5ddafd74dc00b48783e88c8d40e8f4667670f85c 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -66,8 +66,9 @@ void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver); int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, const struct mlxsw_bus *mlxsw_bus, - void *bus_priv); -void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core); + void *bus_priv, bool reload, + struct devlink *devlink); +void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, bool reload); struct mlxsw_tx_info { u8 local_port; diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c index c0dcfa05b0771589631e1c20fa68801622abb6c4..25f9915ebd820d7cd9f4ddaea24b83f84a96a323 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c +++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c @@ -539,7 +539,8 @@ static int mlxsw_i2c_probe(struct i2c_client *client, mlxsw_i2c->dev = &client->dev; err = mlxsw_core_bus_device_register(&mlxsw_i2c->bus_info, - &mlxsw_i2c_bus, mlxsw_i2c); + &mlxsw_i2c_bus, mlxsw_i2c, false, + NULL); if (err) { dev_err(&client->dev, "Fail to register core bus\n"); return err; @@ -557,7 +558,7 @@ static int mlxsw_i2c_remove(struct i2c_client *client) { struct mlxsw_i2c *mlxsw_i2c = i2c_get_clientdata(client); - mlxsw_core_bus_device_unregister(mlxsw_i2c->core); + mlxsw_core_bus_device_unregister(mlxsw_i2c->core, false); mutex_destroy(&mlxsw_i2c->cmd.lock); return 0; diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 58ab18845928a0cfba893a2b9af21a5080d39d83..85faa87bf42d5a88a6b7ed173ee675e093e72436 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -1739,7 +1739,8 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) mlxsw_pci->id = id; err = mlxsw_core_bus_device_register(&mlxsw_pci->bus_info, - &mlxsw_pci_bus, mlxsw_pci); + &mlxsw_pci_bus, mlxsw_pci, false, + NULL); if (err) { dev_err(&pdev->dev, "cannot register bus device\n"); goto err_bus_device_register; @@ -1767,7 +1768,7 @@ static void mlxsw_pci_remove(struct pci_dev *pdev) { struct mlxsw_pci *mlxsw_pci = pci_get_drvdata(pdev); - mlxsw_core_bus_device_unregister(mlxsw_pci->core); + mlxsw_core_bus_device_unregister(mlxsw_pci->core, false); mlxsw_pci_free_irq_vectors(mlxsw_pci); iounmap(mlxsw_pci->hw_addr); pci_release_regions(mlxsw_pci->pdev);