diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/minimal.c | 215 |
1 files changed, 163 insertions, 52 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c index f8dee111d25b..7fc5ebb8e0ba 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c +++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c @@ -26,13 +26,20 @@ 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 { @@ -191,7 +198,7 @@ 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; @@ -202,6 +209,7 @@ 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; } @@ -223,6 +231,11 @@ mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port) 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 slot_index, u8 module) @@ -300,16 +313,23 @@ 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; @@ -322,8 +342,9 @@ 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; } @@ -331,98 +352,188 @@ static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port, static void mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) { - mlxsw_m->module_to_port[module] = -1; + 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_linecards_init(struct mlxsw_m *mlxsw_m) { unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); - int i, 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) { - err = -ENOMEM; - goto err_module_to_port_alloc; + mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots, + sizeof(*mlxsw_m->line_cards), + GFP_KERNEL); + if (!mlxsw_m->line_cards) + goto err_kcalloc; + + 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]) + goto err_kmalloc_array; + + /* 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; } - /* Invalidate the entries of module to local port mapping array */ - for (i = 0; i < max_ports; i++) - mlxsw_m->module_to_port[i] = -1; - return 0; -err_module_to_port_alloc: +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) { - kfree(mlxsw_m->module_to_port); + 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 int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m) +static void +mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index) { - unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); - u8 last_module = max_ports; int i; - int err; - /* 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; + 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); } +} - /* 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], - 0, 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, 0, i); 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, 0, 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 int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m) |