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 strscpy(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 strscpy(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_core_port_netdev_link(mlxsw_m->core, local_port, 269 mlxsw_m_port, dev); 270 mlxsw_m_port->dev = dev; 271 mlxsw_m_port->mlxsw_m = mlxsw_m; 272 mlxsw_m_port->local_port = local_port; 273 mlxsw_m_port->module = module; 274 mlxsw_m_port->slot_index = slot_index; 275 /* Add module offset for line card. Offset for main board iz zero. 276 * For line card in slot #n offset is calculated as (#n - 1) 277 * multiplied by maximum modules number, which could be found on a line 278 * card. 279 */ 280 mlxsw_m_port->module_offset = mlxsw_m_port->slot_index ? 281 (mlxsw_m_port->slot_index - 1) * 282 mlxsw_m->max_modules_per_slot : 0; 283 284 dev->netdev_ops = &mlxsw_m_port_netdev_ops; 285 dev->ethtool_ops = &mlxsw_m_port_ethtool_ops; 286 287 err = mlxsw_m_port_dev_addr_get(mlxsw_m_port); 288 if (err) { 289 dev_err(mlxsw_m->bus_info->dev, "Port %d: Unable to get port mac address\n", 290 mlxsw_m_port->local_port); 291 goto err_dev_addr_get; 292 } 293 294 netif_carrier_off(dev); 295 mlxsw_m->ports[local_port] = mlxsw_m_port; 296 err = register_netdev(dev); 297 if (err) { 298 dev_err(mlxsw_m->bus_info->dev, "Port %d: Failed to register netdev\n", 299 mlxsw_m_port->local_port); 300 goto err_register_netdev; 301 } 302 303 return 0; 304 305 err_register_netdev: 306 mlxsw_m->ports[local_port] = NULL; 307 err_dev_addr_get: 308 free_netdev(dev); 309 err_alloc_etherdev: 310 mlxsw_core_port_fini(mlxsw_m->core, local_port); 311 return err; 312 } 313 314 static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port) 315 { 316 struct mlxsw_m_port *mlxsw_m_port = mlxsw_m->ports[local_port]; 317 318 unregister_netdev(mlxsw_m_port->dev); /* This calls ndo_stop */ 319 mlxsw_m->ports[local_port] = NULL; 320 free_netdev(mlxsw_m_port->dev); 321 mlxsw_core_port_fini(mlxsw_m->core, local_port); 322 } 323 324 static int* 325 mlxsw_m_port_mapping_get(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) 326 { 327 return &mlxsw_m->line_cards[slot_index]->module_to_port[module]; 328 } 329 330 static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port, 331 u8 *last_module) 332 { 333 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 334 u8 module, width, slot_index; 335 int *module_to_port; 336 int err; 337 338 /* Fill out to local port mapping array */ 339 err = mlxsw_m_port_module_info_get(mlxsw_m, local_port, &module, 340 &width, &slot_index); 341 if (err) 342 return err; 343 344 /* Skip if line card has been already configured */ 345 if (mlxsw_m->line_cards[slot_index]->active) 346 return 0; 347 if (!width) 348 return 0; 349 /* Skip, if port belongs to the cluster */ 350 if (module == *last_module) 351 return 0; 352 *last_module = module; 353 354 if (WARN_ON_ONCE(module >= max_ports)) 355 return -EINVAL; 356 mlxsw_env_module_port_map(mlxsw_m->core, slot_index, module); 357 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, module); 358 *module_to_port = local_port; 359 360 return 0; 361 } 362 363 static void 364 mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module) 365 { 366 int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, 367 module); 368 *module_to_port = -1; 369 mlxsw_env_module_port_unmap(mlxsw_m->core, slot_index, module); 370 } 371 372 static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m) 373 { 374 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 375 char mgpir_pl[MLXSW_REG_MGPIR_LEN]; 376 u8 num_of_modules; 377 int i, j, err; 378 379 mlxsw_reg_mgpir_pack(mgpir_pl, 0); 380 err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mgpir), mgpir_pl); 381 if (err) 382 return err; 383 384 mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, &num_of_modules, 385 &mlxsw_m->num_of_slots); 386 /* If the system is modular, get the maximum number of modules per-slot. 387 * Otherwise, get the maximum number of modules on the main board. 388 */ 389 if (mlxsw_m->num_of_slots) 390 mlxsw_m->max_modules_per_slot = 391 mlxsw_reg_mgpir_max_modules_per_slot_get(mgpir_pl); 392 else 393 mlxsw_m->max_modules_per_slot = num_of_modules; 394 /* Add slot for main board. */ 395 mlxsw_m->num_of_slots += 1; 396 397 mlxsw_m->ports = kcalloc(max_ports, sizeof(*mlxsw_m->ports), 398 GFP_KERNEL); 399 if (!mlxsw_m->ports) 400 return -ENOMEM; 401 402 mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots, 403 sizeof(*mlxsw_m->line_cards), 404 GFP_KERNEL); 405 if (!mlxsw_m->line_cards) { 406 err = -ENOMEM; 407 goto err_kcalloc; 408 } 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 err = -ENOMEM; 418 goto err_kmalloc_array; 419 } 420 421 /* Invalidate the entries of module to local port mapping array. */ 422 for (j = 0; j < mlxsw_m->max_modules_per_slot; j++) 423 mlxsw_m->line_cards[i]->module_to_port[j] = -1; 424 } 425 426 return 0; 427 428 err_kmalloc_array: 429 for (i--; i >= 0; i--) 430 kfree(mlxsw_m->line_cards[i]); 431 err_kcalloc: 432 kfree(mlxsw_m->ports); 433 return err; 434 } 435 436 static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m) 437 { 438 int i = mlxsw_m->num_of_slots; 439 440 for (i--; i >= 0; i--) 441 kfree(mlxsw_m->line_cards[i]); 442 kfree(mlxsw_m->line_cards); 443 kfree(mlxsw_m->ports); 444 } 445 446 static void 447 mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index) 448 { 449 int i; 450 451 for (i = mlxsw_m->max_modules_per_slot - 1; i >= 0; i--) { 452 int *module_to_port; 453 454 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 455 if (*module_to_port > 0) 456 mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); 457 } 458 } 459 460 static int 461 mlxsw_m_linecard_ports_create(struct mlxsw_m *mlxsw_m, u8 slot_index) 462 { 463 int *module_to_port; 464 int i, err; 465 466 for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { 467 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 468 if (*module_to_port > 0) { 469 err = mlxsw_m_port_create(mlxsw_m, *module_to_port, 470 slot_index, i); 471 if (err) 472 goto err_port_create; 473 /* Mark slot as active */ 474 if (!mlxsw_m->line_cards[slot_index]->active) 475 mlxsw_m->line_cards[slot_index]->active = true; 476 } 477 } 478 return 0; 479 480 err_port_create: 481 for (i--; i >= 0; i--) { 482 module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i); 483 if (*module_to_port > 0 && 484 mlxsw_m_port_created(mlxsw_m, *module_to_port)) { 485 mlxsw_m_port_remove(mlxsw_m, *module_to_port); 486 /* Mark slot as inactive */ 487 if (mlxsw_m->line_cards[slot_index]->active) 488 mlxsw_m->line_cards[slot_index]->active = false; 489 } 490 } 491 return err; 492 } 493 494 static void 495 mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index) 496 { 497 int i; 498 499 for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) { 500 int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, 501 slot_index, i); 502 503 if (*module_to_port > 0 && 504 mlxsw_m_port_created(mlxsw_m, *module_to_port)) { 505 mlxsw_m_port_remove(mlxsw_m, *module_to_port); 506 mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i); 507 } 508 } 509 } 510 511 static int mlxsw_m_ports_module_map(struct mlxsw_m *mlxsw_m) 512 { 513 unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core); 514 u8 last_module = max_ports; 515 int i, err; 516 517 for (i = 1; i < max_ports; i++) { 518 err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module); 519 if (err) 520 return err; 521 } 522 523 return 0; 524 } 525 526 static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m) 527 { 528 int err; 529 530 /* Fill out module to local port mapping array */ 531 err = mlxsw_m_ports_module_map(mlxsw_m); 532 if (err) 533 goto err_ports_module_map; 534 535 /* Create port objects for each valid entry */ 536 err = mlxsw_m_linecard_ports_create(mlxsw_m, 0); 537 if (err) 538 goto err_linecard_ports_create; 539 540 return 0; 541 542 err_linecard_ports_create: 543 err_ports_module_map: 544 mlxsw_m_linecard_port_module_unmap(mlxsw_m, 0); 545 546 return err; 547 } 548 549 static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m) 550 { 551 mlxsw_m_linecard_ports_remove(mlxsw_m, 0); 552 } 553 554 static void 555 mlxsw_m_ports_remove_selected(struct mlxsw_core *mlxsw_core, 556 bool (*selector)(void *priv, u16 local_port), 557 void *priv) 558 { 559 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 560 struct mlxsw_linecard *linecard_priv = priv; 561 struct mlxsw_m_line_card *linecard; 562 563 linecard = mlxsw_m->line_cards[linecard_priv->slot_index]; 564 565 if (WARN_ON(!linecard->active)) 566 return; 567 568 mlxsw_m_linecard_ports_remove(mlxsw_m, linecard_priv->slot_index); 569 linecard->active = false; 570 } 571 572 static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m) 573 { 574 const struct mlxsw_fw_rev *rev = &mlxsw_m->bus_info->fw_rev; 575 576 /* Validate driver and FW are compatible. 577 * Do not check major version, since it defines chip type, while 578 * driver is supposed to support any type. 579 */ 580 if (mlxsw_core_fw_rev_minor_subminor_validate(rev, &mlxsw_m_fw_rev)) 581 return 0; 582 583 dev_err(mlxsw_m->bus_info->dev, "The firmware version %d.%d.%d is incompatible with the driver (required >= %d.%d.%d)\n", 584 rev->major, rev->minor, rev->subminor, rev->major, 585 mlxsw_m_fw_rev.minor, mlxsw_m_fw_rev.subminor); 586 587 return -EINVAL; 588 } 589 590 static void 591 mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) 592 { 593 struct mlxsw_m_line_card *linecard; 594 struct mlxsw_m *mlxsw_m = priv; 595 int err; 596 597 linecard = mlxsw_m->line_cards[slot_index]; 598 /* Skip if line card has been already configured during init */ 599 if (linecard->active) 600 return; 601 602 /* Fill out module to local port mapping array */ 603 err = mlxsw_m_ports_module_map(mlxsw_m); 604 if (err) 605 goto err_ports_module_map; 606 607 /* Create port objects for each valid entry */ 608 err = mlxsw_m_linecard_ports_create(mlxsw_m, slot_index); 609 if (err) { 610 dev_err(mlxsw_m->bus_info->dev, "Failed to create port for line card at slot %d\n", 611 slot_index); 612 goto err_linecard_ports_create; 613 } 614 615 linecard->active = true; 616 617 return; 618 619 err_linecard_ports_create: 620 err_ports_module_map: 621 mlxsw_m_linecard_port_module_unmap(mlxsw_m, slot_index); 622 } 623 624 static void 625 mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv) 626 { 627 struct mlxsw_m_line_card *linecard; 628 struct mlxsw_m *mlxsw_m = priv; 629 630 linecard = mlxsw_m->line_cards[slot_index]; 631 632 if (WARN_ON(!linecard->active)) 633 return; 634 635 mlxsw_m_linecard_ports_remove(mlxsw_m, slot_index); 636 linecard->active = false; 637 } 638 639 static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = { 640 .got_active = mlxsw_m_got_active, 641 .got_inactive = mlxsw_m_got_inactive, 642 }; 643 644 static int mlxsw_m_init(struct mlxsw_core *mlxsw_core, 645 const struct mlxsw_bus_info *mlxsw_bus_info, 646 struct netlink_ext_ack *extack) 647 { 648 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 649 int err; 650 651 mlxsw_m->core = mlxsw_core; 652 mlxsw_m->bus_info = mlxsw_bus_info; 653 654 err = mlxsw_m_fw_rev_validate(mlxsw_m); 655 if (err) 656 return err; 657 658 err = mlxsw_m_base_mac_get(mlxsw_m); 659 if (err) { 660 dev_err(mlxsw_m->bus_info->dev, "Failed to get base mac\n"); 661 return err; 662 } 663 664 err = mlxsw_m_linecards_init(mlxsw_m); 665 if (err) { 666 dev_err(mlxsw_m->bus_info->dev, "Failed to create line cards\n"); 667 return err; 668 } 669 670 err = mlxsw_linecards_event_ops_register(mlxsw_core, 671 &mlxsw_m_event_ops, mlxsw_m); 672 if (err) { 673 dev_err(mlxsw_m->bus_info->dev, "Failed to register line cards operations\n"); 674 goto linecards_event_ops_register; 675 } 676 677 err = mlxsw_m_ports_create(mlxsw_m); 678 if (err) { 679 dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n"); 680 goto err_ports_create; 681 } 682 683 return 0; 684 685 err_ports_create: 686 mlxsw_linecards_event_ops_unregister(mlxsw_core, 687 &mlxsw_m_event_ops, mlxsw_m); 688 linecards_event_ops_register: 689 mlxsw_m_linecards_fini(mlxsw_m); 690 return err; 691 } 692 693 static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core) 694 { 695 struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core); 696 697 mlxsw_m_ports_remove(mlxsw_m); 698 mlxsw_linecards_event_ops_unregister(mlxsw_core, 699 &mlxsw_m_event_ops, mlxsw_m); 700 mlxsw_m_linecards_fini(mlxsw_m); 701 } 702 703 static const struct mlxsw_config_profile mlxsw_m_config_profile; 704 705 static struct mlxsw_driver mlxsw_m_driver = { 706 .kind = mlxsw_m_driver_name, 707 .priv_size = sizeof(struct mlxsw_m), 708 .init = mlxsw_m_init, 709 .fini = mlxsw_m_fini, 710 .ports_remove_selected = mlxsw_m_ports_remove_selected, 711 .profile = &mlxsw_m_config_profile, 712 }; 713 714 static const struct i2c_device_id mlxsw_m_i2c_id[] = { 715 { "mlxsw_minimal", 0}, 716 { }, 717 }; 718 719 static struct i2c_driver mlxsw_m_i2c_driver = { 720 .driver.name = "mlxsw_minimal", 721 .class = I2C_CLASS_HWMON, 722 .id_table = mlxsw_m_i2c_id, 723 }; 724 725 static int __init mlxsw_m_module_init(void) 726 { 727 int err; 728 729 err = mlxsw_core_driver_register(&mlxsw_m_driver); 730 if (err) 731 return err; 732 733 err = mlxsw_i2c_driver_register(&mlxsw_m_i2c_driver); 734 if (err) 735 goto err_i2c_driver_register; 736 737 return 0; 738 739 err_i2c_driver_register: 740 mlxsw_core_driver_unregister(&mlxsw_m_driver); 741 742 return err; 743 } 744 745 static void __exit mlxsw_m_module_exit(void) 746 { 747 mlxsw_i2c_driver_unregister(&mlxsw_m_i2c_driver); 748 mlxsw_core_driver_unregister(&mlxsw_m_driver); 749 } 750 751 module_init(mlxsw_m_module_init); 752 module_exit(mlxsw_m_module_exit); 753 754 MODULE_LICENSE("Dual BSD/GPL"); 755 MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>"); 756 MODULE_DESCRIPTION("Mellanox minimal driver"); 757 MODULE_DEVICE_TABLE(i2c, mlxsw_m_i2c_id); 758