1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /* Copyright (c) 2016-2019 Mellanox Technologies. All rights reserved */ 3 4 #include <linux/netdevice.h> 5 #include <linux/etherdevice.h> 6 #include <linux/ethtool.h> 7 #include <linux/i2c.h> 8 #include <linux/kernel.h> 9 #include <linux/module.h> 10 #include <linux/mod_devicetable.h> 11 #include <linux/types.h> 12 13 #include "core.h" 14 #include "core_env.h" 15 #include "i2c.h" 16 17 static const char mlxsw_m_driver_name[] = "mlxsw_minimal"; 18 19 #define MLXSW_M_FWREV_MINOR 2000 20 #define MLXSW_M_FWREV_SUBMINOR 1886 21 22 static const struct mlxsw_fw_rev mlxsw_m_fw_rev = { 23 .minor = MLXSW_M_FWREV_MINOR, 24 .subminor = MLXSW_M_FWREV_SUBMINOR, 25 }; 26 27 struct mlxsw_m_port; 28 29 struct mlxsw_m_line_card { 30 bool active; 31 int module_to_port[]; 32 }; 33 34 struct mlxsw_m { 35 struct mlxsw_m_port **ports; 36 struct mlxsw_core *core; 37 const struct mlxsw_bus_info *bus_info; 38 u8 base_mac[ETH_ALEN]; 39 u8 max_ports; 40 u8 max_modules_per_slot; /* Maximum number of modules per-slot. */ 41 u8 num_of_slots; /* Including the main board. */ 42 struct mlxsw_m_line_card **line_cards; 43 }; 44 45 struct mlxsw_m_port { 46 struct net_device *dev; 47 struct mlxsw_m *mlxsw_m; 48 u16 local_port; 49 u8 slot_index; 50 u8 module; 51 u8 module_offset; 52 }; 53 54 static int mlxsw_m_base_mac_get(struct mlxsw_m *mlxsw_m) 55 { 56 char spad_pl[MLXSW_REG_SPAD_LEN] = {0}; 57 int err; 58 59 err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(spad), spad_pl); 60 if (err) 61 return err; 62 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_m->base_mac); 63 return 0; 64 } 65 66 static int mlxsw_m_port_open(struct net_device *dev) 67 { 68 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev); 69 struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; 70 71 return mlxsw_env_module_port_up(mlxsw_m->core, 0, 72 mlxsw_m_port->module); 73 } 74 75 static int mlxsw_m_port_stop(struct net_device *dev) 76 { 77 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev); 78 struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; 79 80 mlxsw_env_module_port_down(mlxsw_m->core, 0, mlxsw_m_port->module); 81 return 0; 82 } 83 84 static struct devlink_port * 85 mlxsw_m_port_get_devlink_port(struct net_device *dev) 86 { 87 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev); 88 struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; 89 90 return mlxsw_core_port_devlink_port_get(mlxsw_m->core, 91 mlxsw_m_port->local_port); 92 } 93 94 static const struct net_device_ops mlxsw_m_port_netdev_ops = { 95 .ndo_open = mlxsw_m_port_open, 96 .ndo_stop = mlxsw_m_port_stop, 97 .ndo_get_devlink_port = mlxsw_m_port_get_devlink_port, 98 }; 99 100 static void mlxsw_m_module_get_drvinfo(struct net_device *dev, 101 struct ethtool_drvinfo *drvinfo) 102 { 103 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev); 104 struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; 105 106 strlcpy(drvinfo->driver, mlxsw_m->bus_info->device_kind, 107 sizeof(drvinfo->driver)); 108 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 109 "%d.%d.%d", 110 mlxsw_m->bus_info->fw_rev.major, 111 mlxsw_m->bus_info->fw_rev.minor, 112 mlxsw_m->bus_info->fw_rev.subminor); 113 strlcpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name, 114 sizeof(drvinfo->bus_info)); 115 } 116 117 static int mlxsw_m_get_module_info(struct net_device *netdev, 118 struct ethtool_modinfo *modinfo) 119 { 120 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 121 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 122 123 return mlxsw_env_get_module_info(netdev, core, 124 mlxsw_m_port->slot_index, 125 mlxsw_m_port->module, modinfo); 126 } 127 128 static int 129 mlxsw_m_get_module_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, 130 u8 *data) 131 { 132 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 133 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 134 135 return mlxsw_env_get_module_eeprom(netdev, core, 136 mlxsw_m_port->slot_index, 137 mlxsw_m_port->module, ee, data); 138 } 139 140 static int 141 mlxsw_m_get_module_eeprom_by_page(struct net_device *netdev, 142 const struct ethtool_module_eeprom *page, 143 struct netlink_ext_ack *extack) 144 { 145 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 146 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 147 148 return mlxsw_env_get_module_eeprom_by_page(core, 149 mlxsw_m_port->slot_index, 150 mlxsw_m_port->module, 151 page, extack); 152 } 153 154 static int mlxsw_m_reset(struct net_device *netdev, u32 *flags) 155 { 156 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 157 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 158 159 return mlxsw_env_reset_module(netdev, core, mlxsw_m_port->slot_index, 160 mlxsw_m_port->module, 161 flags); 162 } 163 164 static int 165 mlxsw_m_get_module_power_mode(struct net_device *netdev, 166 struct ethtool_module_power_mode_params *params, 167 struct netlink_ext_ack *extack) 168 { 169 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 170 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 171 172 return mlxsw_env_get_module_power_mode(core, mlxsw_m_port->slot_index, 173 mlxsw_m_port->module, 174 params, extack); 175 } 176 177 static int 178 mlxsw_m_set_module_power_mode(struct net_device *netdev, 179 const struct ethtool_module_power_mode_params *params, 180 struct netlink_ext_ack *extack) 181 { 182 struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev); 183 struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core; 184 185 return mlxsw_env_set_module_power_mode(core, mlxsw_m_port->slot_index, 186 mlxsw_m_port->module, 187 params->policy, extack); 188 } 189 190 static const struct ethtool_ops mlxsw_m_port_ethtool_ops = { 191 .get_drvinfo = mlxsw_m_module_get_drvinfo, 192 .get_module_info = mlxsw_m_get_module_info, 193 .get_module_eeprom = mlxsw_m_get_module_eeprom, 194 .get_module_eeprom_by_page = mlxsw_m_get_module_eeprom_by_page, 195 .reset = mlxsw_m_reset, 196 .get_module_power_mode = mlxsw_m_get_module_power_mode, 197 .set_module_power_mode = mlxsw_m_set_module_power_mode, 198 }; 199 200 static int 201 mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port, 202 u8 *p_module, u8 *p_width, u8 *p_slot_index) 203 { 204 char pmlp_pl[MLXSW_REG_PMLP_LEN]; 205 int err; 206 207 mlxsw_reg_pmlp_pack(pmlp_pl, local_port); 208 err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(pmlp), pmlp_pl); 209 if (err) 210 return err; 211 *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0); 212 *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl); 213 *p_slot_index = mlxsw_reg_pmlp_slot_index_get(pmlp_pl, 0); 214 215 return 0; 216 } 217 218 static int 219 mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port) 220 { 221 struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m; 222 char ppad_pl[MLXSW_REG_PPAD_LEN]; 223 u8 addr[ETH_ALEN]; 224 int err; 225 226 mlxsw_reg_ppad_pack(ppad_pl, false, 0); 227 err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(ppad), ppad_pl); 228 if (err) 229 return err; 230 mlxsw_reg_ppad_mac_memcpy_from(ppad_pl, addr); 231 eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1 + 232 mlxsw_m_port->module_offset); 233 return 0; 234 } 235 236 static bool mlxsw_m_port_created(struct mlxsw_m *mlxsw_m, u16 local_port) 237 { 238 return mlxsw_m->ports[local_port]; 239 } 240 241 static int 242 mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index, 243 u8 module) 244 { 245 struct mlxsw_m_port *mlxsw_m_port; 246 struct net_device *dev; 247 int err; 248 249 err = mlxsw_core_port_init(mlxsw_m->core, local_port, slot_index, 250 module + 1, false, 0, false, 251 0, mlxsw_m->base_mac, 252 sizeof(mlxsw_m->base_mac)); 253 if (err) { 254 dev_err(mlxsw_m->bus_info->dev, "Port %d: Failed to init core port\n", 255 local_port); 256 return err; 257 } 258 259 dev = alloc_etherdev(sizeof(struct mlxsw_m_port)); 260 if (!dev) { 261 err = -ENOMEM; 262 goto err_alloc_etherdev; 263 } 264 265 SET_NETDEV_DEV(dev, mlxsw_m->bus_info->dev); 266 dev_net_set(dev, mlxsw_core_net(mlxsw_m->core)); 267 mlxsw_m_port = netdev_priv(dev); 268 mlxsw_m_port->dev = dev; 269 mlxsw_m_port->mlxsw_m = mlxsw_m; 270 mlxsw_m_port->local_port = local_port; 271 mlxsw_m_port->module = module; 272 mlxsw_m_port->slot_index = slot_index; 273 /* Add module offset for line card. Offset for main board iz zero. 274 * For line card in slot #n offset is calculated as (#n - 1) 275 * multiplied by maximum modules number, which could be found on a line 276 * card. 277 */ 278 mlxsw_m_port->module_offset = mlxsw_m_port->slot_index ? 279 (mlxsw_m_port->slot_index - 1) * 280 mlxsw_m->max_modules_per_slot : 0; 281 282 dev->netdev_ops = &mlxsw_m_port_netdev_ops; 283 dev->ethtool_ops = &mlxsw_m_port_ethtool_ops; 284 285 err = mlxsw_m_port_dev_addr_get(mlxsw_m_port); 286 if (err) { 287 dev_err(mlxsw_m->bus_info->dev, "Port %d: Unable to get port mac address\n", 288 mlxsw_m_port->local_port); 289 goto err_dev_addr_get; 290 } 291 292 netif_carrier_off(dev); 293 mlxsw_m->ports[local_port] = mlxsw_m_port; 294 err = register_netdev(dev); 295 if (err) { 296 dev_err(mlxsw_m->bus_info->dev, "Port %d: Failed to register netdev\n", 297 mlxsw_m_port->local_port); 298 goto err_register_netdev; 299 } 300 301 mlxsw_core_port_eth_set(mlxsw_m->core, mlxsw_m_port->local_port, 302 mlxsw_m_port, dev); 303 304 return 0; 305 306 err_register_netdev: 307 mlxsw_m->ports[local_port] = NULL; 308 err_dev_addr_get: 309 free_netdev(dev); 310 err_alloc_etherdev: 311 mlxsw_core_port_fini(mlxsw_m->core, local_port); 312 return err; 313 } 314 315 static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port) 316 { 317 struct mlxsw_m_port *mlxsw_m_port = mlxsw_m->ports[local_port]; 318 319 mlxsw_core_port_clear(mlxsw_m->core, local_port, mlxsw_m); 320 unregister_netdev(mlxsw_m_port->dev); /* This calls ndo_stop */ 321 mlxsw_m->ports[local_port] = NULL; 322 free_netdev(mlxsw_m_port->dev); 323 mlxsw_core_port_fini(mlxsw_m->core, local_port); 324 } 325 326 static int* 327 mlxsw_m_port_mapping_get(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) 328 { 329 return &mlxsw_m->line_cards[slot_index]->module_to_port[module]; 330 } 331 332 static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port, 333 u8 *last_module) 334 { 335 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 336 u8 module, width, slot_index; 337 int *module_to_port; 338 int err; 339 340 /* Fill out to local port mapping array */ 341 err = mlxsw_m_port_module_info_get(mlxsw_m, local_port, &module, 342 &width, &slot_index); 343 if (err) 344 return err; 345 346 /* Skip if line card has been already configured */ 347 if (mlxsw_m->line_cards[slot_index]->active) 348 return 0; 349 if (!width) 350 return 0; 351 /* Skip, if port belongs to the cluster */ 352 if (module == *last_module) 353 return 0; 354 *last_module = module; 355 356 if (WARN_ON_ONCE(module >= max_ports)) 357 return -EINVAL; 358 mlxsw_env_module_port_map(mlxsw_m->core, slot_index, module); 359 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, module); 360 *module_to_port = local_port; 361 362 return 0; 363 } 364 365 static void 366 mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) 367 { 368 int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, 369 module); 370 *module_to_port = -1; 371 mlxsw_env_module_port_unmap(mlxsw_m->core, slot_index, module); 372 } 373 374 static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m) 375 { 376 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 377 char mgpir_pl[MLXSW_REG_MGPIR_LEN]; 378 u8 num_of_modules; 379 int i, j, err; 380 381 mlxsw_reg_mgpir_pack(mgpir_pl, 0); 382 err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mgpir), mgpir_pl); 383 if (err) 384 return err; 385 386 mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, &num_of_modules, 387 &mlxsw_m->num_of_slots); 388 /* If the system is modular, get the maximum number of modules per-slot. 389 * Otherwise, get the maximum number of modules on the main board. 390 */ 391 if (mlxsw_m->num_of_slots) 392 mlxsw_m->max_modules_per_slot = 393 mlxsw_reg_mgpir_max_modules_per_slot_get(mgpir_pl); 394 else 395 mlxsw_m->max_modules_per_slot = num_of_modules; 396 /* Add slot for main board. */ 397 mlxsw_m->num_of_slots += 1; 398 399 mlxsw_m->ports = kcalloc(max_ports, sizeof(*mlxsw_m->ports), 400 GFP_KERNEL); 401 if (!mlxsw_m->ports) 402 return -ENOMEM; 403 404 mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots, 405 sizeof(*mlxsw_m->line_cards), 406 GFP_KERNEL); 407 if (!mlxsw_m->line_cards) 408 goto err_kcalloc; 409 410 for (i = 0; i < mlxsw_m->num_of_slots; i++) { 411 mlxsw_m->line_cards[i] = 412 kzalloc(struct_size(mlxsw_m->line_cards[i], 413 module_to_port, 414 mlxsw_m->max_modules_per_slot), 415 GFP_KERNEL); 416 if (!mlxsw_m->line_cards[i]) 417 goto err_kmalloc_array; 418 419 /* Invalidate the entries of module to local port mapping array. */ 420 for (j = 0; j < mlxsw_m->max_modules_per_slot; j++) 421 mlxsw_m->line_cards[i]->module_to_port[j] = -1; 422 } 423 424 return 0; 425 426 err_kmalloc_array: 427 for (i--; i >= 0; i--) 428 kfree(mlxsw_m->line_cards[i]); 429 err_kcalloc: 430 kfree(mlxsw_m->ports); 431 return err; 432 } 433 434 static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m) 435 { 436 int i = mlxsw_m->num_of_slots; 437 438 for (i--; i >= 0; i--) 439 kfree(mlxsw_m->line_cards[i]); 440 kfree(mlxsw_m->line_cards); 441 kfree(mlxsw_m->ports); 442 } 443 444 static void 445 mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index) 446 { 447 int i; 448 449 for (i = mlxsw_m->max_modules_per_slot - 1; i >= 0; i--) { 450 int *module_to_port; 451 452 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 453 if (*module_to_port > 0) 454 mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); 455 } 456 } 457 458 static int 459 mlxsw_m_linecard_ports_create(struct mlxsw_m *mlxsw_m, u8 slot_index) 460 { 461 int *module_to_port; 462 int i, err; 463 464 for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { 465 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 466 if (*module_to_port > 0) { 467 err = mlxsw_m_port_create(mlxsw_m, *module_to_port, 468 slot_index, i); 469 if (err) 470 goto err_port_create; 471 /* Mark slot as active */ 472 if (!mlxsw_m->line_cards[slot_index]->active) 473 mlxsw_m->line_cards[slot_index]->active = true; 474 } 475 } 476 return 0; 477 478 err_port_create: 479 for (i--; i >= 0; i--) { 480 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 481 if (*module_to_port > 0 && 482 mlxsw_m_port_created(mlxsw_m, *module_to_port)) { 483 mlxsw_m_port_remove(mlxsw_m, *module_to_port); 484 /* Mark slot as inactive */ 485 if (mlxsw_m->line_cards[slot_index]->active) 486 mlxsw_m->line_cards[slot_index]->active = false; 487 } 488 } 489 return err; 490 } 491 492 static void 493 mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index) 494 { 495 int i; 496 497 for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { 498 int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, 499 slot_index, i); 500 501 if (*module_to_port > 0 && 502 mlxsw_m_port_created(mlxsw_m, *module_to_port)) { 503 mlxsw_m_port_remove(mlxsw_m, *module_to_port); 504 mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); 505 } 506 } 507 } 508 509 static int mlxsw_m_ports_module_map(struct mlxsw_m *mlxsw_m) 510 { 511 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 512 u8 last_module = max_ports; 513 int i, err; 514 515 for (i = 1; i < max_ports; i++) { 516 err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module); 517 if (err) 518 return err; 519 } 520 521 return 0; 522 } 523 524 static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m) 525 { 526 int err; 527 528 /* Fill out module to local port mapping array */ 529 err = mlxsw_m_ports_module_map(mlxsw_m); 530 if (err) 531 goto err_ports_module_map; 532 533 /* Create port objects for each valid entry */ 534 err = mlxsw_m_linecard_ports_create(mlxsw_m, 0); 535 if (err) 536 goto err_linecard_ports_create; 537 538 return 0; 539 540 err_linecard_ports_create: 541 err_ports_module_map: 542 mlxsw_m_linecard_port_module_unmap(mlxsw_m, 0); 543 544 return err; 545 } 546 547 static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m) 548 { 549 mlxsw_m_linecard_ports_remove(mlxsw_m, 0); 550 } 551 552 static void 553 mlxsw_m_ports_remove_selected(struct mlxsw_core *mlxsw_core, 554 bool (*selector)(void *priv, u16 local_port), 555 void *priv) 556 { 557 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 558 struct mlxsw_linecard *linecard_priv = priv; 559 struct mlxsw_m_line_card *linecard; 560 561 linecard = mlxsw_m->line_cards[linecard_priv->slot_index]; 562 563 if (WARN_ON(!linecard->active)) 564 return; 565 566 mlxsw_m_linecard_ports_remove(mlxsw_m, linecard_priv->slot_index); 567 linecard->active = false; 568 } 569 570 static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m) 571 { 572 const struct mlxsw_fw_rev *rev = &mlxsw_m->bus_info->fw_rev; 573 574 /* Validate driver and FW are compatible. 575 * Do not check major version, since it defines chip type, while 576 * driver is supposed to support any type. 577 */ 578 if (mlxsw_core_fw_rev_minor_subminor_validate(rev, &mlxsw_m_fw_rev)) 579 return 0; 580 581 dev_err(mlxsw_m->bus_info->dev, "The firmware version %d.%d.%d is incompatible with the driver (required >= %d.%d.%d)\n", 582 rev->major, rev->minor, rev->subminor, rev->major, 583 mlxsw_m_fw_rev.minor, mlxsw_m_fw_rev.subminor); 584 585 return -EINVAL; 586 } 587 588 static void 589 mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) 590 { 591 struct mlxsw_m_line_card *linecard; 592 struct mlxsw_m *mlxsw_m = priv; 593 int err; 594 595 linecard = mlxsw_m->line_cards[slot_index]; 596 /* Skip if line card has been already configured during init */ 597 if (linecard->active) 598 return; 599 600 /* Fill out module to local port mapping array */ 601 err = mlxsw_m_ports_module_map(mlxsw_m); 602 if (err) 603 goto err_ports_module_map; 604 605 /* Create port objects for each valid entry */ 606 err = mlxsw_m_linecard_ports_create(mlxsw_m, slot_index); 607 if (err) { 608 dev_err(mlxsw_m->bus_info->dev, "Failed to create port for line card at slot %d\n", 609 slot_index); 610 goto err_linecard_ports_create; 611 } 612 613 linecard->active = true; 614 615 return; 616 617 err_linecard_ports_create: 618 err_ports_module_map: 619 mlxsw_m_linecard_port_module_unmap(mlxsw_m, slot_index); 620 } 621 622 static void 623 mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) 624 { 625 struct mlxsw_m_line_card *linecard; 626 struct mlxsw_m *mlxsw_m = priv; 627 628 linecard = mlxsw_m->line_cards[slot_index]; 629 630 if (WARN_ON(!linecard->active)) 631 return; 632 633 mlxsw_m_linecard_ports_remove(mlxsw_m, slot_index); 634 linecard->active = false; 635 } 636 637 static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = { 638 .got_active = mlxsw_m_got_active, 639 .got_inactive = mlxsw_m_got_inactive, 640 }; 641 642 static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, 643 const struct mlxsw_bus_info *mlxsw_bus_info, 644 struct netlink_ext_ack *extack) 645 { 646 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 647 int err; 648 649 mlxsw_m->core = mlxsw_core; 650 mlxsw_m->bus_info = mlxsw_bus_info; 651 652 err = mlxsw_m_fw_rev_validate(mlxsw_m); 653 if (err) 654 return err; 655 656 err = mlxsw_m_base_mac_get(mlxsw_m); 657 if (err) { 658 dev_err(mlxsw_m->bus_info->dev, "Failed to get base mac\n"); 659 return err; 660 } 661 662 err = mlxsw_m_linecards_init(mlxsw_m); 663 if (err) { 664 dev_err(mlxsw_m->bus_info->dev, "Failed to create line cards\n"); 665 return err; 666 } 667 668 err = mlxsw_linecards_event_ops_register(mlxsw_core, 669 &mlxsw_m_event_ops, mlxsw_m); 670 if (err) { 671 dev_err(mlxsw_m->bus_info->dev, "Failed to register line cards operations\n"); 672 goto linecards_event_ops_register; 673 } 674 675 err = mlxsw_m_ports_create(mlxsw_m); 676 if (err) { 677 dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n"); 678 goto err_ports_create; 679 } 680 681 return 0; 682 683 err_ports_create: 684 mlxsw_linecards_event_ops_unregister(mlxsw_core, 685 &mlxsw_m_event_ops, mlxsw_m); 686 linecards_event_ops_register: 687 mlxsw_m_linecards_fini(mlxsw_m); 688 return err; 689 } 690 691 static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core) 692 { 693 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 694 695 mlxsw_m_ports_remove(mlxsw_m); 696 mlxsw_linecards_event_ops_unregister(mlxsw_core, 697 &mlxsw_m_event_ops, mlxsw_m); 698 mlxsw_m_linecards_fini(mlxsw_m); 699 } 700 701 static const struct mlxsw_config_profile mlxsw_m_config_profile; 702 703 static struct mlxsw_driver mlxsw_m_driver = { 704 .kind = mlxsw_m_driver_name, 705 .priv_size = sizeof(struct mlxsw_m), 706 .init = mlxsw_m_init, 707 .fini = mlxsw_m_fini, 708 .ports_remove_selected = mlxsw_m_ports_remove_selected, 709 .profile = &mlxsw_m_config_profile, 710 }; 711 712 static const struct i2c_device_id mlxsw_m_i2c_id[] = { 713 { "mlxsw_minimal", 0}, 714 { }, 715 }; 716 717 static struct i2c_driver mlxsw_m_i2c_driver = { 718 .driver.name = "mlxsw_minimal", 719 .class = I2C_CLASS_HWMON, 720 .id_table = mlxsw_m_i2c_id, 721 }; 722 723 static int __init mlxsw_m_module_init(void) 724 { 725 int err; 726 727 err = mlxsw_core_driver_register(&mlxsw_m_driver); 728 if (err) 729 return err; 730 731 err = mlxsw_i2c_driver_register(&mlxsw_m_i2c_driver); 732 if (err) 733 goto err_i2c_driver_register; 734 735 return 0; 736 737 err_i2c_driver_register: 738 mlxsw_core_driver_unregister(&mlxsw_m_driver); 739 740 return err; 741 } 742 743 static void __exit mlxsw_m_module_exit(void) 744 { 745 mlxsw_i2c_driver_unregister(&mlxsw_m_i2c_driver); 746 mlxsw_core_driver_unregister(&mlxsw_m_driver); 747 } 748 749 module_init(mlxsw_m_module_init); 750 module_exit(mlxsw_m_module_exit); 751 752 MODULE_LICENSE("Dual BSD/GPL"); 753 MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); 754 MODULE_DESCRIPTION("Mellanox minimal driver"); 755 MODULE_DEVICE_TABLE(i2c, mlxsw_m_i2c_id); 756