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