diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/minimal.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/minimal.c | 379 |
1 files changed, 314 insertions, 65 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c index bb1cd4bae82e..55b3c42bb007 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c +++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c @@ -26,20 +26,29 @@ static const struct mlxsw_fw_rev mlxsw_m_fw_rev = { struct mlxsw_m_port; +struct mlxsw_m_line_card { + bool active; + int module_to_port[]; +}; + struct mlxsw_m { struct mlxsw_m_port **ports; - int *module_to_port; struct mlxsw_core *core; const struct mlxsw_bus_info *bus_info; u8 base_mac[ETH_ALEN]; u8 max_ports; + u8 max_modules_per_slot; /* Maximum number of modules per-slot. */ + u8 num_of_slots; /* Including the main board. */ + struct mlxsw_m_line_card **line_cards; }; struct mlxsw_m_port { struct net_device *dev; struct mlxsw_m *mlxsw_m; u16 local_port; + u8 slot_index; u8 module; + u8 module_offset; }; static int mlxsw_m_base_mac_get(struct mlxsw_m *mlxsw_m) @@ -94,14 +103,14 @@ static void mlxsw_m_module_get_drvinfo(struct net_device *dev, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev); struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; - strlcpy(drvinfo->driver, mlxsw_m->bus_info->device_kind, + strscpy(drvinfo->driver, mlxsw_m->bus_info->device_kind, sizeof(drvinfo->driver)); snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d", mlxsw_m->bus_info->fw_rev.major, mlxsw_m->bus_info->fw_rev.minor, mlxsw_m->bus_info->fw_rev.subminor); - strlcpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name, + strscpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name, sizeof(drvinfo->bus_info)); } @@ -111,8 +120,9 @@ static int mlxsw_m_get_module_info(struct net_device *netdev, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_get_module_info(netdev, core, 0, mlxsw_m_port->module, - modinfo); + return mlxsw_env_get_module_info(netdev, core, + mlxsw_m_port->slot_index, + mlxsw_m_port->module, modinfo); } static int @@ -122,7 +132,8 @@ mlxsw_m_get_module_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_get_module_eeprom(netdev, core, 0, + return mlxsw_env_get_module_eeprom(netdev, core, + mlxsw_m_port->slot_index, mlxsw_m_port->module, ee, data); } @@ -134,7 +145,8 @@ mlxsw_m_get_module_eeprom_by_page(struct net_device *netdev, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_get_module_eeprom_by_page(core, 0, + return mlxsw_env_get_module_eeprom_by_page(core, + mlxsw_m_port->slot_index, mlxsw_m_port->module, page, extack); } @@ -144,7 +156,8 @@ static int mlxsw_m_reset(struct net_device *netdev, u32 *flags) struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_reset_module(netdev, core, 0, mlxsw_m_port->module, + return mlxsw_env_reset_module(netdev, core, mlxsw_m_port->slot_index, + mlxsw_m_port->module, flags); } @@ -156,7 +169,8 @@ mlxsw_m_get_module_power_mode(struct net_device *netdev, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_get_module_power_mode(core, 0, mlxsw_m_port->module, + return mlxsw_env_get_module_power_mode(core, mlxsw_m_port->slot_index, + mlxsw_m_port->module, params, extack); } @@ -168,7 +182,8 @@ mlxsw_m_set_module_power_mode(struct net_device *netdev, struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; - return mlxsw_env_set_module_power_mode(core, 0, mlxsw_m_port->module, + return mlxsw_env_set_module_power_mode(core, mlxsw_m_port->slot_index, + mlxsw_m_port->module, params->policy, extack); } @@ -184,7 +199,7 @@ static const struct ethtool_ops mlxsw_m_port_ethtool_ops = { static int mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port, - u8 *p_module, u8 *p_width) + u8 *p_module, u8 *p_width, u8 *p_slot_index) { char pmlp_pl[MLXSW_REG_PMLP_LEN]; int err; @@ -195,6 +210,7 @@ mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port, return err; *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0); *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl); + *p_slot_index = mlxsw_reg_pmlp_slot_index_get(pmlp_pl, 0); return 0; } @@ -212,18 +228,25 @@ mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port) if (err) return err; mlxsw_reg_ppad_mac_memcpy_from(ppad_pl, addr); - eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1); + eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1 + + mlxsw_m_port->module_offset); return 0; } +static bool mlxsw_m_port_created(struct mlxsw_m *mlxsw_m, u16 local_port) +{ + return mlxsw_m->ports[local_port]; +} + static int -mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 module) +mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index, + u8 module) { struct mlxsw_m_port *mlxsw_m_port; struct net_device *dev; int err; - err = mlxsw_core_port_init(mlxsw_m->core, local_port, 0, + err = mlxsw_core_port_init(mlxsw_m->core, local_port, slot_index, module + 1, false, 0, false, 0, mlxsw_m->base_mac, sizeof(mlxsw_m->base_mac)); @@ -246,6 +269,15 @@ mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 module) mlxsw_m_port->mlxsw_m = mlxsw_m; mlxsw_m_port->local_port = local_port; mlxsw_m_port->module = module; + mlxsw_m_port->slot_index = slot_index; + /* Add module offset for line card. Offset for main board iz zero. + * For line card in slot #n offset is calculated as (#n - 1) + * multiplied by maximum modules number, which could be found on a line + * card. + */ + mlxsw_m_port->module_offset = mlxsw_m_port->slot_index ? + (mlxsw_m_port->slot_index - 1) * + mlxsw_m->max_modules_per_slot : 0; dev->netdev_ops = &mlxsw_m_port_netdev_ops; dev->ethtool_ops = &mlxsw_m_port_ethtool_ops; @@ -291,19 +323,29 @@ static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port) mlxsw_core_port_fini(mlxsw_m->core, local_port); } +static int* +mlxsw_m_port_mapping_get(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) +{ + return &mlxsw_m->line_cards[slot_index]->module_to_port[module]; +} + static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port, u8 *last_module) { unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); - u8 module, width; + u8 module, width, slot_index; + int *module_to_port; int err; /* Fill out to local port mapping array */ err = mlxsw_m_port_module_info_get(mlxsw_m, local_port, &module, - &width); + &width, &slot_index); if (err) return err; + /* Skip if line card has been already configured */ + if (mlxsw_m->line_cards[slot_index]->active) + return 0; if (!width) return 0; /* Skip, if port belongs to the cluster */ @@ -313,91 +355,220 @@ static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port, if (WARN_ON_ONCE(module >= max_ports)) return -EINVAL; - mlxsw_env_module_port_map(mlxsw_m->core, 0, module); - mlxsw_m->module_to_port[module] = ++mlxsw_m->max_ports; + mlxsw_env_module_port_map(mlxsw_m->core, slot_index, module); + module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, module); + *module_to_port = local_port; return 0; } -static void mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 module) +static void +mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) { - mlxsw_m->module_to_port[module] = -1; - mlxsw_env_module_port_unmap(mlxsw_m->core, 0, module); + int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, + module); + *module_to_port = -1; + mlxsw_env_module_port_unmap(mlxsw_m->core, slot_index, module); } -static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m) +static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m) { unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); - u8 last_module = max_ports; - int i; - int err; + char mgpir_pl[MLXSW_REG_MGPIR_LEN]; + u8 num_of_modules; + int i, j, err; + + mlxsw_reg_mgpir_pack(mgpir_pl, 0); + err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mgpir), mgpir_pl); + if (err) + return err; + + mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, &num_of_modules, + &mlxsw_m->num_of_slots); + /* If the system is modular, get the maximum number of modules per-slot. + * Otherwise, get the maximum number of modules on the main board. + */ + if (mlxsw_m->num_of_slots) + mlxsw_m->max_modules_per_slot = + mlxsw_reg_mgpir_max_modules_per_slot_get(mgpir_pl); + else + mlxsw_m->max_modules_per_slot = num_of_modules; + /* Add slot for main board. */ + mlxsw_m->num_of_slots += 1; mlxsw_m->ports = kcalloc(max_ports, sizeof(*mlxsw_m->ports), GFP_KERNEL); if (!mlxsw_m->ports) return -ENOMEM; - mlxsw_m->module_to_port = kmalloc_array(max_ports, sizeof(int), - GFP_KERNEL); - if (!mlxsw_m->module_to_port) { + mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots, + sizeof(*mlxsw_m->line_cards), + GFP_KERNEL); + if (!mlxsw_m->line_cards) { err = -ENOMEM; - goto err_module_to_port_alloc; + goto err_kcalloc; } - /* Invalidate the entries of module to local port mapping array */ - for (i = 0; i < max_ports; i++) - mlxsw_m->module_to_port[i] = -1; + for (i = 0; i < mlxsw_m->num_of_slots; i++) { + mlxsw_m->line_cards[i] = + kzalloc(struct_size(mlxsw_m->line_cards[i], + module_to_port, + mlxsw_m->max_modules_per_slot), + GFP_KERNEL); + if (!mlxsw_m->line_cards[i]) { + err = -ENOMEM; + goto err_kmalloc_array; + } - /* Fill out module to local port mapping array */ - for (i = 1; i < max_ports; i++) { - err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module); - if (err) - goto err_module_to_port_map; + /* Invalidate the entries of module to local port mapping array. */ + for (j = 0; j < mlxsw_m->max_modules_per_slot; j++) + mlxsw_m->line_cards[i]->module_to_port[j] = -1; } - /* Create port objects for each valid entry */ - for (i = 0; i < mlxsw_m->max_ports; i++) { - if (mlxsw_m->module_to_port[i] > 0) { - err = mlxsw_m_port_create(mlxsw_m, - mlxsw_m->module_to_port[i], - i); + return 0; + +err_kmalloc_array: + for (i--; i >= 0; i--) + kfree(mlxsw_m->line_cards[i]); +err_kcalloc: + kfree(mlxsw_m->ports); + return err; +} + +static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m) +{ + int i = mlxsw_m->num_of_slots; + + for (i--; i >= 0; i--) + kfree(mlxsw_m->line_cards[i]); + kfree(mlxsw_m->line_cards); + kfree(mlxsw_m->ports); +} + +static void +mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index) +{ + int i; + + for (i = mlxsw_m->max_modules_per_slot - 1; i >= 0; i--) { + int *module_to_port; + + module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); + if (*module_to_port > 0) + mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); + } +} + +static int +mlxsw_m_linecard_ports_create(struct mlxsw_m *mlxsw_m, u8 slot_index) +{ + int *module_to_port; + int i, err; + + for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { + module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); + if (*module_to_port > 0) { + err = mlxsw_m_port_create(mlxsw_m, *module_to_port, + slot_index, i); if (err) - goto err_module_to_port_create; + goto err_port_create; + /* Mark slot as active */ + if (!mlxsw_m->line_cards[slot_index]->active) + mlxsw_m->line_cards[slot_index]->active = true; } } - return 0; -err_module_to_port_create: +err_port_create: for (i--; i >= 0; i--) { - if (mlxsw_m->module_to_port[i] > 0) - mlxsw_m_port_remove(mlxsw_m, - mlxsw_m->module_to_port[i]); + module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); + if (*module_to_port > 0 && + mlxsw_m_port_created(mlxsw_m, *module_to_port)) { + mlxsw_m_port_remove(mlxsw_m, *module_to_port); + /* Mark slot as inactive */ + if (mlxsw_m->line_cards[slot_index]->active) + mlxsw_m->line_cards[slot_index]->active = false; + } } - i = max_ports; -err_module_to_port_map: - for (i--; i > 0; i--) - mlxsw_m_port_module_unmap(mlxsw_m, i); - kfree(mlxsw_m->module_to_port); -err_module_to_port_alloc: - kfree(mlxsw_m->ports); return err; } -static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m) +static void +mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index) { int i; - for (i = 0; i < mlxsw_m->max_ports; i++) { - if (mlxsw_m->module_to_port[i] > 0) { - mlxsw_m_port_remove(mlxsw_m, - mlxsw_m->module_to_port[i]); - mlxsw_m_port_module_unmap(mlxsw_m, i); + for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { + int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, + slot_index, i); + + if (*module_to_port > 0 && + mlxsw_m_port_created(mlxsw_m, *module_to_port)) { + mlxsw_m_port_remove(mlxsw_m, *module_to_port); + mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); } } +} - kfree(mlxsw_m->module_to_port); - kfree(mlxsw_m->ports); +static int mlxsw_m_ports_module_map(struct mlxsw_m *mlxsw_m) +{ + unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); + u8 last_module = max_ports; + int i, err; + + for (i = 1; i < max_ports; i++) { + err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module); + if (err) + return err; + } + + return 0; +} + +static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m) +{ + int err; + + /* Fill out module to local port mapping array */ + err = mlxsw_m_ports_module_map(mlxsw_m); + if (err) + goto err_ports_module_map; + + /* Create port objects for each valid entry */ + err = mlxsw_m_linecard_ports_create(mlxsw_m, 0); + if (err) + goto err_linecard_ports_create; + + return 0; + +err_linecard_ports_create: +err_ports_module_map: + mlxsw_m_linecard_port_module_unmap(mlxsw_m, 0); + + return err; +} + +static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m) +{ + mlxsw_m_linecard_ports_remove(mlxsw_m, 0); +} + +static void +mlxsw_m_ports_remove_selected(struct mlxsw_core *mlxsw_core, + bool (*selector)(void *priv, u16 local_port), + void *priv) +{ + struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); + struct mlxsw_linecard *linecard_priv = priv; + struct mlxsw_m_line_card *linecard; + + linecard = mlxsw_m->line_cards[linecard_priv->slot_index]; + + if (WARN_ON(!linecard->active)) + return; + + mlxsw_m_linecard_ports_remove(mlxsw_m, linecard_priv->slot_index); + linecard->active = false; } static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m) @@ -418,6 +589,60 @@ static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m) return -EINVAL; } +static void +mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) +{ + struct mlxsw_m_line_card *linecard; + struct mlxsw_m *mlxsw_m = priv; + int err; + + linecard = mlxsw_m->line_cards[slot_index]; + /* Skip if line card has been already configured during init */ + if (linecard->active) + return; + + /* Fill out module to local port mapping array */ + err = mlxsw_m_ports_module_map(mlxsw_m); + if (err) + goto err_ports_module_map; + + /* Create port objects for each valid entry */ + err = mlxsw_m_linecard_ports_create(mlxsw_m, slot_index); + if (err) { + dev_err(mlxsw_m->bus_info->dev, "Failed to create port for line card at slot %d\n", + slot_index); + goto err_linecard_ports_create; + } + + linecard->active = true; + + return; + +err_linecard_ports_create: +err_ports_module_map: + mlxsw_m_linecard_port_module_unmap(mlxsw_m, slot_index); +} + +static void +mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) +{ + struct mlxsw_m_line_card *linecard; + struct mlxsw_m *mlxsw_m = priv; + + linecard = mlxsw_m->line_cards[slot_index]; + + if (WARN_ON(!linecard->active)) + return; + + mlxsw_m_linecard_ports_remove(mlxsw_m, slot_index); + linecard->active = false; +} + +static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = { + .got_active = mlxsw_m_got_active, + .got_inactive = mlxsw_m_got_inactive, +}; + static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, const struct mlxsw_bus_info *mlxsw_bus_info, struct netlink_ext_ack *extack) @@ -438,13 +663,33 @@ static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, return err; } + err = mlxsw_m_linecards_init(mlxsw_m); + if (err) { + dev_err(mlxsw_m->bus_info->dev, "Failed to create line cards\n"); + return err; + } + + err = mlxsw_linecards_event_ops_register(mlxsw_core, + &mlxsw_m_event_ops, mlxsw_m); + if (err) { + dev_err(mlxsw_m->bus_info->dev, "Failed to register line cards operations\n"); + goto linecards_event_ops_register; + } + err = mlxsw_m_ports_create(mlxsw_m); if (err) { dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n"); - return err; + goto err_ports_create; } return 0; + +err_ports_create: + mlxsw_linecards_event_ops_unregister(mlxsw_core, + &mlxsw_m_event_ops, mlxsw_m); +linecards_event_ops_register: + mlxsw_m_linecards_fini(mlxsw_m); + return err; } static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core) @@ -452,6 +697,9 @@ static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core) struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); mlxsw_m_ports_remove(mlxsw_m); + mlxsw_linecards_event_ops_unregister(mlxsw_core, + &mlxsw_m_event_ops, mlxsw_m); + mlxsw_m_linecards_fini(mlxsw_m); } static const struct mlxsw_config_profile mlxsw_m_config_profile; @@ -461,6 +709,7 @@ static struct mlxsw_driver mlxsw_m_driver = { .priv_size = sizeof(struct mlxsw_m), .init = mlxsw_m_init, .fini = mlxsw_m_fini, + .ports_remove_selected = mlxsw_m_ports_remove_selected, .profile = &mlxsw_m_config_profile, }; |