1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */ 3 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/device.h> 7 #include <linux/export.h> 8 #include <linux/err.h> 9 #include <linux/if_link.h> 10 #include <linux/netdevice.h> 11 #include <linux/completion.h> 12 #include <linux/skbuff.h> 13 #include <linux/etherdevice.h> 14 #include <linux/types.h> 15 #include <linux/string.h> 16 #include <linux/gfp.h> 17 #include <linux/random.h> 18 #include <linux/jiffies.h> 19 #include <linux/mutex.h> 20 #include <linux/rcupdate.h> 21 #include <linux/slab.h> 22 #include <linux/workqueue.h> 23 #include <linux/firmware.h> 24 #include <asm/byteorder.h> 25 #include <net/devlink.h> 26 #include <trace/events/devlink.h> 27 28 #include "core.h" 29 #include "core_env.h" 30 #include "item.h" 31 #include "cmd.h" 32 #include "port.h" 33 #include "trap.h" 34 #include "emad.h" 35 #include "reg.h" 36 #include "resources.h" 37 #include "../mlxfw/mlxfw.h" 38 39 static LIST_HEAD(mlxsw_core_driver_list); 40 static DEFINE_SPINLOCK(mlxsw_core_driver_list_lock); 41 42 static const char mlxsw_core_driver_name[] = "mlxsw_core"; 43 44 static struct workqueue_struct *mlxsw_wq; 45 static struct workqueue_struct *mlxsw_owq; 46 47 struct mlxsw_core_port { 48 struct devlink_port devlink_port; 49 void *port_driver_priv; 50 u8 local_port; 51 }; 52 53 void *mlxsw_core_port_driver_priv(struct mlxsw_core_port *mlxsw_core_port) 54 { 55 return mlxsw_core_port->port_driver_priv; 56 } 57 EXPORT_SYMBOL(mlxsw_core_port_driver_priv); 58 59 static bool mlxsw_core_port_check(struct mlxsw_core_port *mlxsw_core_port) 60 { 61 return mlxsw_core_port->port_driver_priv != NULL; 62 } 63 64 struct mlxsw_core { 65 struct mlxsw_driver *driver; 66 const struct mlxsw_bus *bus; 67 void *bus_priv; 68 const struct mlxsw_bus_info *bus_info; 69 struct workqueue_struct *emad_wq; 70 struct list_head rx_listener_list; 71 struct list_head event_listener_list; 72 struct { 73 atomic64_t tid; 74 struct list_head trans_list; 75 spinlock_t trans_list_lock; /* protects trans_list writes */ 76 bool use_emad; 77 bool enable_string_tlv; 78 } emad; 79 struct { 80 u8 *mapping; /* lag_id+port_index to local_port mapping */ 81 } lag; 82 struct mlxsw_res res; 83 struct mlxsw_hwmon *hwmon; 84 struct mlxsw_thermal *thermal; 85 struct mlxsw_core_port *ports; 86 unsigned int max_ports; 87 atomic_t active_ports_count; 88 bool fw_flash_in_progress; 89 struct { 90 struct devlink_health_reporter *fw_fatal; 91 } health; 92 struct mlxsw_env *env; 93 bool is_initialized; /* Denotes if core was already initialized. */ 94 unsigned long driver_priv[]; 95 /* driver_priv has to be always the last item */ 96 }; 97 98 #define MLXSW_PORT_MAX_PORTS_DEFAULT 0x40 99 100 static u64 mlxsw_ports_occ_get(void *priv) 101 { 102 struct mlxsw_core *mlxsw_core = priv; 103 104 return atomic_read(&mlxsw_core->active_ports_count); 105 } 106 107 static int mlxsw_core_resources_ports_register(struct mlxsw_core *mlxsw_core) 108 { 109 struct devlink *devlink = priv_to_devlink(mlxsw_core); 110 struct devlink_resource_size_params ports_num_params; 111 u32 max_ports; 112 113 max_ports = mlxsw_core->max_ports - 1; 114 devlink_resource_size_params_init(&ports_num_params, max_ports, 115 max_ports, 1, 116 DEVLINK_RESOURCE_UNIT_ENTRY); 117 118 return devlink_resource_register(devlink, 119 DEVLINK_RESOURCE_GENERIC_NAME_PORTS, 120 max_ports, MLXSW_CORE_RESOURCE_PORTS, 121 DEVLINK_RESOURCE_ID_PARENT_TOP, 122 &ports_num_params); 123 } 124 125 static int mlxsw_ports_init(struct mlxsw_core *mlxsw_core, bool reload) 126 { 127 struct devlink *devlink = priv_to_devlink(mlxsw_core); 128 int err; 129 130 /* Switch ports are numbered from 1 to queried value */ 131 if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_SYSTEM_PORT)) 132 mlxsw_core->max_ports = MLXSW_CORE_RES_GET(mlxsw_core, 133 MAX_SYSTEM_PORT) + 1; 134 else 135 mlxsw_core->max_ports = MLXSW_PORT_MAX_PORTS_DEFAULT + 1; 136 137 mlxsw_core->ports = kcalloc(mlxsw_core->max_ports, 138 sizeof(struct mlxsw_core_port), GFP_KERNEL); 139 if (!mlxsw_core->ports) 140 return -ENOMEM; 141 142 if (!reload) { 143 err = mlxsw_core_resources_ports_register(mlxsw_core); 144 if (err) 145 goto err_resources_ports_register; 146 } 147 atomic_set(&mlxsw_core->active_ports_count, 0); 148 devlink_resource_occ_get_register(devlink, MLXSW_CORE_RESOURCE_PORTS, 149 mlxsw_ports_occ_get, mlxsw_core); 150 151 return 0; 152 153 err_resources_ports_register: 154 kfree(mlxsw_core->ports); 155 return err; 156 } 157 158 static void mlxsw_ports_fini(struct mlxsw_core *mlxsw_core, bool reload) 159 { 160 struct devlink *devlink = priv_to_devlink(mlxsw_core); 161 162 devlink_resource_occ_get_unregister(devlink, MLXSW_CORE_RESOURCE_PORTS); 163 if (!reload) 164 devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL); 165 166 kfree(mlxsw_core->ports); 167 } 168 169 unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core) 170 { 171 return mlxsw_core->max_ports; 172 } 173 EXPORT_SYMBOL(mlxsw_core_max_ports); 174 175 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core) 176 { 177 return mlxsw_core->driver_priv; 178 } 179 EXPORT_SYMBOL(mlxsw_core_driver_priv); 180 181 bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core) 182 { 183 return mlxsw_core->driver->res_query_enabled; 184 } 185 EXPORT_SYMBOL(mlxsw_core_res_query_enabled); 186 187 bool mlxsw_core_temp_warn_enabled(const struct mlxsw_core *mlxsw_core) 188 { 189 return mlxsw_core->driver->temp_warn_enabled; 190 } 191 192 bool 193 mlxsw_core_fw_rev_minor_subminor_validate(const struct mlxsw_fw_rev *rev, 194 const struct mlxsw_fw_rev *req_rev) 195 { 196 return rev->minor > req_rev->minor || 197 (rev->minor == req_rev->minor && 198 rev->subminor >= req_rev->subminor); 199 } 200 EXPORT_SYMBOL(mlxsw_core_fw_rev_minor_subminor_validate); 201 202 struct mlxsw_rx_listener_item { 203 struct list_head list; 204 struct mlxsw_rx_listener rxl; 205 void *priv; 206 bool enabled; 207 }; 208 209 struct mlxsw_event_listener_item { 210 struct list_head list; 211 struct mlxsw_core *mlxsw_core; 212 struct mlxsw_event_listener el; 213 void *priv; 214 }; 215 216 /****************** 217 * EMAD processing 218 ******************/ 219 220 /* emad_eth_hdr_dmac 221 * Destination MAC in EMAD's Ethernet header. 222 * Must be set to 01:02:c9:00:00:01 223 */ 224 MLXSW_ITEM_BUF(emad, eth_hdr, dmac, 0x00, 6); 225 226 /* emad_eth_hdr_smac 227 * Source MAC in EMAD's Ethernet header. 228 * Must be set to 00:02:c9:01:02:03 229 */ 230 MLXSW_ITEM_BUF(emad, eth_hdr, smac, 0x06, 6); 231 232 /* emad_eth_hdr_ethertype 233 * Ethertype in EMAD's Ethernet header. 234 * Must be set to 0x8932 235 */ 236 MLXSW_ITEM32(emad, eth_hdr, ethertype, 0x0C, 16, 16); 237 238 /* emad_eth_hdr_mlx_proto 239 * Mellanox protocol. 240 * Must be set to 0x0. 241 */ 242 MLXSW_ITEM32(emad, eth_hdr, mlx_proto, 0x0C, 8, 8); 243 244 /* emad_eth_hdr_ver 245 * Mellanox protocol version. 246 * Must be set to 0x0. 247 */ 248 MLXSW_ITEM32(emad, eth_hdr, ver, 0x0C, 4, 4); 249 250 /* emad_op_tlv_type 251 * Type of the TLV. 252 * Must be set to 0x1 (operation TLV). 253 */ 254 MLXSW_ITEM32(emad, op_tlv, type, 0x00, 27, 5); 255 256 /* emad_op_tlv_len 257 * Length of the operation TLV in u32. 258 * Must be set to 0x4. 259 */ 260 MLXSW_ITEM32(emad, op_tlv, len, 0x00, 16, 11); 261 262 /* emad_op_tlv_dr 263 * Direct route bit. Setting to 1 indicates the EMAD is a direct route 264 * EMAD. DR TLV must follow. 265 * 266 * Note: Currently not supported and must not be set. 267 */ 268 MLXSW_ITEM32(emad, op_tlv, dr, 0x00, 15, 1); 269 270 /* emad_op_tlv_status 271 * Returned status in case of EMAD response. Must be set to 0 in case 272 * of EMAD request. 273 * 0x0 - success 274 * 0x1 - device is busy. Requester should retry 275 * 0x2 - Mellanox protocol version not supported 276 * 0x3 - unknown TLV 277 * 0x4 - register not supported 278 * 0x5 - operation class not supported 279 * 0x6 - EMAD method not supported 280 * 0x7 - bad parameter (e.g. port out of range) 281 * 0x8 - resource not available 282 * 0x9 - message receipt acknowledgment. Requester should retry 283 * 0x70 - internal error 284 */ 285 MLXSW_ITEM32(emad, op_tlv, status, 0x00, 8, 7); 286 287 /* emad_op_tlv_register_id 288 * Register ID of register within register TLV. 289 */ 290 MLXSW_ITEM32(emad, op_tlv, register_id, 0x04, 16, 16); 291 292 /* emad_op_tlv_r 293 * Response bit. Setting to 1 indicates Response, otherwise request. 294 */ 295 MLXSW_ITEM32(emad, op_tlv, r, 0x04, 15, 1); 296 297 /* emad_op_tlv_method 298 * EMAD method type. 299 * 0x1 - query 300 * 0x2 - write 301 * 0x3 - send (currently not supported) 302 * 0x4 - event 303 */ 304 MLXSW_ITEM32(emad, op_tlv, method, 0x04, 8, 7); 305 306 /* emad_op_tlv_class 307 * EMAD operation class. Must be set to 0x1 (REG_ACCESS). 308 */ 309 MLXSW_ITEM32(emad, op_tlv, class, 0x04, 0, 8); 310 311 /* emad_op_tlv_tid 312 * EMAD transaction ID. Used for pairing request and response EMADs. 313 */ 314 MLXSW_ITEM64(emad, op_tlv, tid, 0x08, 0, 64); 315 316 /* emad_string_tlv_type 317 * Type of the TLV. 318 * Must be set to 0x2 (string TLV). 319 */ 320 MLXSW_ITEM32(emad, string_tlv, type, 0x00, 27, 5); 321 322 /* emad_string_tlv_len 323 * Length of the string TLV in u32. 324 */ 325 MLXSW_ITEM32(emad, string_tlv, len, 0x00, 16, 11); 326 327 #define MLXSW_EMAD_STRING_TLV_STRING_LEN 128 328 329 /* emad_string_tlv_string 330 * String provided by the device's firmware in case of erroneous register access 331 */ 332 MLXSW_ITEM_BUF(emad, string_tlv, string, 0x04, 333 MLXSW_EMAD_STRING_TLV_STRING_LEN); 334 335 /* emad_reg_tlv_type 336 * Type of the TLV. 337 * Must be set to 0x3 (register TLV). 338 */ 339 MLXSW_ITEM32(emad, reg_tlv, type, 0x00, 27, 5); 340 341 /* emad_reg_tlv_len 342 * Length of the operation TLV in u32. 343 */ 344 MLXSW_ITEM32(emad, reg_tlv, len, 0x00, 16, 11); 345 346 /* emad_end_tlv_type 347 * Type of the TLV. 348 * Must be set to 0x0 (end TLV). 349 */ 350 MLXSW_ITEM32(emad, end_tlv, type, 0x00, 27, 5); 351 352 /* emad_end_tlv_len 353 * Length of the end TLV in u32. 354 * Must be set to 1. 355 */ 356 MLXSW_ITEM32(emad, end_tlv, len, 0x00, 16, 11); 357 358 enum mlxsw_core_reg_access_type { 359 MLXSW_CORE_REG_ACCESS_TYPE_QUERY, 360 MLXSW_CORE_REG_ACCESS_TYPE_WRITE, 361 }; 362 363 static inline const char * 364 mlxsw_core_reg_access_type_str(enum mlxsw_core_reg_access_type type) 365 { 366 switch (type) { 367 case MLXSW_CORE_REG_ACCESS_TYPE_QUERY: 368 return "query"; 369 case MLXSW_CORE_REG_ACCESS_TYPE_WRITE: 370 return "write"; 371 } 372 BUG(); 373 } 374 375 static void mlxsw_emad_pack_end_tlv(char *end_tlv) 376 { 377 mlxsw_emad_end_tlv_type_set(end_tlv, MLXSW_EMAD_TLV_TYPE_END); 378 mlxsw_emad_end_tlv_len_set(end_tlv, MLXSW_EMAD_END_TLV_LEN); 379 } 380 381 static void mlxsw_emad_pack_reg_tlv(char *reg_tlv, 382 const struct mlxsw_reg_info *reg, 383 char *payload) 384 { 385 mlxsw_emad_reg_tlv_type_set(reg_tlv, MLXSW_EMAD_TLV_TYPE_REG); 386 mlxsw_emad_reg_tlv_len_set(reg_tlv, reg->len / sizeof(u32) + 1); 387 memcpy(reg_tlv + sizeof(u32), payload, reg->len); 388 } 389 390 static void mlxsw_emad_pack_string_tlv(char *string_tlv) 391 { 392 mlxsw_emad_string_tlv_type_set(string_tlv, MLXSW_EMAD_TLV_TYPE_STRING); 393 mlxsw_emad_string_tlv_len_set(string_tlv, MLXSW_EMAD_STRING_TLV_LEN); 394 } 395 396 static void mlxsw_emad_pack_op_tlv(char *op_tlv, 397 const struct mlxsw_reg_info *reg, 398 enum mlxsw_core_reg_access_type type, 399 u64 tid) 400 { 401 mlxsw_emad_op_tlv_type_set(op_tlv, MLXSW_EMAD_TLV_TYPE_OP); 402 mlxsw_emad_op_tlv_len_set(op_tlv, MLXSW_EMAD_OP_TLV_LEN); 403 mlxsw_emad_op_tlv_dr_set(op_tlv, 0); 404 mlxsw_emad_op_tlv_status_set(op_tlv, 0); 405 mlxsw_emad_op_tlv_register_id_set(op_tlv, reg->id); 406 mlxsw_emad_op_tlv_r_set(op_tlv, MLXSW_EMAD_OP_TLV_REQUEST); 407 if (type == MLXSW_CORE_REG_ACCESS_TYPE_QUERY) 408 mlxsw_emad_op_tlv_method_set(op_tlv, 409 MLXSW_EMAD_OP_TLV_METHOD_QUERY); 410 else 411 mlxsw_emad_op_tlv_method_set(op_tlv, 412 MLXSW_EMAD_OP_TLV_METHOD_WRITE); 413 mlxsw_emad_op_tlv_class_set(op_tlv, 414 MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS); 415 mlxsw_emad_op_tlv_tid_set(op_tlv, tid); 416 } 417 418 static int mlxsw_emad_construct_eth_hdr(struct sk_buff *skb) 419 { 420 char *eth_hdr = skb_push(skb, MLXSW_EMAD_ETH_HDR_LEN); 421 422 mlxsw_emad_eth_hdr_dmac_memcpy_to(eth_hdr, MLXSW_EMAD_EH_DMAC); 423 mlxsw_emad_eth_hdr_smac_memcpy_to(eth_hdr, MLXSW_EMAD_EH_SMAC); 424 mlxsw_emad_eth_hdr_ethertype_set(eth_hdr, MLXSW_EMAD_EH_ETHERTYPE); 425 mlxsw_emad_eth_hdr_mlx_proto_set(eth_hdr, MLXSW_EMAD_EH_MLX_PROTO); 426 mlxsw_emad_eth_hdr_ver_set(eth_hdr, MLXSW_EMAD_EH_PROTO_VERSION); 427 428 skb_reset_mac_header(skb); 429 430 return 0; 431 } 432 433 static void mlxsw_emad_construct(struct sk_buff *skb, 434 const struct mlxsw_reg_info *reg, 435 char *payload, 436 enum mlxsw_core_reg_access_type type, 437 u64 tid, bool enable_string_tlv) 438 { 439 char *buf; 440 441 buf = skb_push(skb, MLXSW_EMAD_END_TLV_LEN * sizeof(u32)); 442 mlxsw_emad_pack_end_tlv(buf); 443 444 buf = skb_push(skb, reg->len + sizeof(u32)); 445 mlxsw_emad_pack_reg_tlv(buf, reg, payload); 446 447 if (enable_string_tlv) { 448 buf = skb_push(skb, MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32)); 449 mlxsw_emad_pack_string_tlv(buf); 450 } 451 452 buf = skb_push(skb, MLXSW_EMAD_OP_TLV_LEN * sizeof(u32)); 453 mlxsw_emad_pack_op_tlv(buf, reg, type, tid); 454 455 mlxsw_emad_construct_eth_hdr(skb); 456 } 457 458 struct mlxsw_emad_tlv_offsets { 459 u16 op_tlv; 460 u16 string_tlv; 461 u16 reg_tlv; 462 }; 463 464 static bool mlxsw_emad_tlv_is_string_tlv(const char *tlv) 465 { 466 u8 tlv_type = mlxsw_emad_string_tlv_type_get(tlv); 467 468 return tlv_type == MLXSW_EMAD_TLV_TYPE_STRING; 469 } 470 471 static void mlxsw_emad_tlv_parse(struct sk_buff *skb) 472 { 473 struct mlxsw_emad_tlv_offsets *offsets = 474 (struct mlxsw_emad_tlv_offsets *) skb->cb; 475 476 offsets->op_tlv = MLXSW_EMAD_ETH_HDR_LEN; 477 offsets->string_tlv = 0; 478 offsets->reg_tlv = MLXSW_EMAD_ETH_HDR_LEN + 479 MLXSW_EMAD_OP_TLV_LEN * sizeof(u32); 480 481 /* If string TLV is present, it must come after the operation TLV. */ 482 if (mlxsw_emad_tlv_is_string_tlv(skb->data + offsets->reg_tlv)) { 483 offsets->string_tlv = offsets->reg_tlv; 484 offsets->reg_tlv += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32); 485 } 486 } 487 488 static char *mlxsw_emad_op_tlv(const struct sk_buff *skb) 489 { 490 struct mlxsw_emad_tlv_offsets *offsets = 491 (struct mlxsw_emad_tlv_offsets *) skb->cb; 492 493 return ((char *) (skb->data + offsets->op_tlv)); 494 } 495 496 static char *mlxsw_emad_string_tlv(const struct sk_buff *skb) 497 { 498 struct mlxsw_emad_tlv_offsets *offsets = 499 (struct mlxsw_emad_tlv_offsets *) skb->cb; 500 501 if (!offsets->string_tlv) 502 return NULL; 503 504 return ((char *) (skb->data + offsets->string_tlv)); 505 } 506 507 static char *mlxsw_emad_reg_tlv(const struct sk_buff *skb) 508 { 509 struct mlxsw_emad_tlv_offsets *offsets = 510 (struct mlxsw_emad_tlv_offsets *) skb->cb; 511 512 return ((char *) (skb->data + offsets->reg_tlv)); 513 } 514 515 static char *mlxsw_emad_reg_payload(const char *reg_tlv) 516 { 517 return ((char *) (reg_tlv + sizeof(u32))); 518 } 519 520 static char *mlxsw_emad_reg_payload_cmd(const char *mbox) 521 { 522 return ((char *) (mbox + (MLXSW_EMAD_OP_TLV_LEN + 1) * sizeof(u32))); 523 } 524 525 static u64 mlxsw_emad_get_tid(const struct sk_buff *skb) 526 { 527 char *op_tlv; 528 529 op_tlv = mlxsw_emad_op_tlv(skb); 530 return mlxsw_emad_op_tlv_tid_get(op_tlv); 531 } 532 533 static bool mlxsw_emad_is_resp(const struct sk_buff *skb) 534 { 535 char *op_tlv; 536 537 op_tlv = mlxsw_emad_op_tlv(skb); 538 return (mlxsw_emad_op_tlv_r_get(op_tlv) == MLXSW_EMAD_OP_TLV_RESPONSE); 539 } 540 541 static int mlxsw_emad_process_status(char *op_tlv, 542 enum mlxsw_emad_op_tlv_status *p_status) 543 { 544 *p_status = mlxsw_emad_op_tlv_status_get(op_tlv); 545 546 switch (*p_status) { 547 case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS: 548 return 0; 549 case MLXSW_EMAD_OP_TLV_STATUS_BUSY: 550 case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK: 551 return -EAGAIN; 552 case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED: 553 case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV: 554 case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED: 555 case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED: 556 case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED: 557 case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER: 558 case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE: 559 case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR: 560 default: 561 return -EIO; 562 } 563 } 564 565 static int 566 mlxsw_emad_process_status_skb(struct sk_buff *skb, 567 enum mlxsw_emad_op_tlv_status *p_status) 568 { 569 return mlxsw_emad_process_status(mlxsw_emad_op_tlv(skb), p_status); 570 } 571 572 struct mlxsw_reg_trans { 573 struct list_head list; 574 struct list_head bulk_list; 575 struct mlxsw_core *core; 576 struct sk_buff *tx_skb; 577 struct mlxsw_tx_info tx_info; 578 struct delayed_work timeout_dw; 579 unsigned int retries; 580 u64 tid; 581 struct completion completion; 582 atomic_t active; 583 mlxsw_reg_trans_cb_t *cb; 584 unsigned long cb_priv; 585 const struct mlxsw_reg_info *reg; 586 enum mlxsw_core_reg_access_type type; 587 int err; 588 char *emad_err_string; 589 enum mlxsw_emad_op_tlv_status emad_status; 590 struct rcu_head rcu; 591 }; 592 593 static void mlxsw_emad_process_string_tlv(const struct sk_buff *skb, 594 struct mlxsw_reg_trans *trans) 595 { 596 char *string_tlv; 597 char *string; 598 599 string_tlv = mlxsw_emad_string_tlv(skb); 600 if (!string_tlv) 601 return; 602 603 trans->emad_err_string = kzalloc(MLXSW_EMAD_STRING_TLV_STRING_LEN, 604 GFP_ATOMIC); 605 if (!trans->emad_err_string) 606 return; 607 608 string = mlxsw_emad_string_tlv_string_data(string_tlv); 609 strlcpy(trans->emad_err_string, string, 610 MLXSW_EMAD_STRING_TLV_STRING_LEN); 611 } 612 613 #define MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS 3000 614 #define MLXSW_EMAD_TIMEOUT_MS 200 615 616 static void mlxsw_emad_trans_timeout_schedule(struct mlxsw_reg_trans *trans) 617 { 618 unsigned long timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_MS); 619 620 if (trans->core->fw_flash_in_progress) 621 timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS); 622 623 queue_delayed_work(trans->core->emad_wq, &trans->timeout_dw, 624 timeout << trans->retries); 625 } 626 627 static int mlxsw_emad_transmit(struct mlxsw_core *mlxsw_core, 628 struct mlxsw_reg_trans *trans) 629 { 630 struct sk_buff *skb; 631 int err; 632 633 skb = skb_clone(trans->tx_skb, GFP_KERNEL); 634 if (!skb) 635 return -ENOMEM; 636 637 trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), false, 0, 638 skb->data + mlxsw_core->driver->txhdr_len, 639 skb->len - mlxsw_core->driver->txhdr_len); 640 641 atomic_set(&trans->active, 1); 642 err = mlxsw_core_skb_transmit(mlxsw_core, skb, &trans->tx_info); 643 if (err) { 644 dev_kfree_skb(skb); 645 return err; 646 } 647 mlxsw_emad_trans_timeout_schedule(trans); 648 return 0; 649 } 650 651 static void mlxsw_emad_trans_finish(struct mlxsw_reg_trans *trans, int err) 652 { 653 struct mlxsw_core *mlxsw_core = trans->core; 654 655 dev_kfree_skb(trans->tx_skb); 656 spin_lock_bh(&mlxsw_core->emad.trans_list_lock); 657 list_del_rcu(&trans->list); 658 spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); 659 trans->err = err; 660 complete(&trans->completion); 661 } 662 663 static void mlxsw_emad_transmit_retry(struct mlxsw_core *mlxsw_core, 664 struct mlxsw_reg_trans *trans) 665 { 666 int err; 667 668 if (trans->retries < MLXSW_EMAD_MAX_RETRY) { 669 trans->retries++; 670 err = mlxsw_emad_transmit(trans->core, trans); 671 if (err == 0) 672 return; 673 674 if (!atomic_dec_and_test(&trans->active)) 675 return; 676 } else { 677 err = -EIO; 678 } 679 mlxsw_emad_trans_finish(trans, err); 680 } 681 682 static void mlxsw_emad_trans_timeout_work(struct work_struct *work) 683 { 684 struct mlxsw_reg_trans *trans = container_of(work, 685 struct mlxsw_reg_trans, 686 timeout_dw.work); 687 688 if (!atomic_dec_and_test(&trans->active)) 689 return; 690 691 mlxsw_emad_transmit_retry(trans->core, trans); 692 } 693 694 static void mlxsw_emad_process_response(struct mlxsw_core *mlxsw_core, 695 struct mlxsw_reg_trans *trans, 696 struct sk_buff *skb) 697 { 698 int err; 699 700 if (!atomic_dec_and_test(&trans->active)) 701 return; 702 703 err = mlxsw_emad_process_status_skb(skb, &trans->emad_status); 704 if (err == -EAGAIN) { 705 mlxsw_emad_transmit_retry(mlxsw_core, trans); 706 } else { 707 if (err == 0) { 708 char *reg_tlv = mlxsw_emad_reg_tlv(skb); 709 710 if (trans->cb) 711 trans->cb(mlxsw_core, 712 mlxsw_emad_reg_payload(reg_tlv), 713 trans->reg->len, trans->cb_priv); 714 } else { 715 mlxsw_emad_process_string_tlv(skb, trans); 716 } 717 mlxsw_emad_trans_finish(trans, err); 718 } 719 } 720 721 /* called with rcu read lock held */ 722 static void mlxsw_emad_rx_listener_func(struct sk_buff *skb, u8 local_port, 723 void *priv) 724 { 725 struct mlxsw_core *mlxsw_core = priv; 726 struct mlxsw_reg_trans *trans; 727 728 trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), true, 0, 729 skb->data, skb->len); 730 731 mlxsw_emad_tlv_parse(skb); 732 733 if (!mlxsw_emad_is_resp(skb)) 734 goto free_skb; 735 736 list_for_each_entry_rcu(trans, &mlxsw_core->emad.trans_list, list) { 737 if (mlxsw_emad_get_tid(skb) == trans->tid) { 738 mlxsw_emad_process_response(mlxsw_core, trans, skb); 739 break; 740 } 741 } 742 743 free_skb: 744 dev_kfree_skb(skb); 745 } 746 747 static const struct mlxsw_listener mlxsw_emad_rx_listener = 748 MLXSW_RXL(mlxsw_emad_rx_listener_func, ETHEMAD, TRAP_TO_CPU, false, 749 EMAD, DISCARD); 750 751 static int mlxsw_emad_init(struct mlxsw_core *mlxsw_core) 752 { 753 struct workqueue_struct *emad_wq; 754 u64 tid; 755 int err; 756 757 if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX)) 758 return 0; 759 760 emad_wq = alloc_workqueue("mlxsw_core_emad", 0, 0); 761 if (!emad_wq) 762 return -ENOMEM; 763 mlxsw_core->emad_wq = emad_wq; 764 765 /* Set the upper 32 bits of the transaction ID field to a random 766 * number. This allows us to discard EMADs addressed to other 767 * devices. 768 */ 769 get_random_bytes(&tid, 4); 770 tid <<= 32; 771 atomic64_set(&mlxsw_core->emad.tid, tid); 772 773 INIT_LIST_HEAD(&mlxsw_core->emad.trans_list); 774 spin_lock_init(&mlxsw_core->emad.trans_list_lock); 775 776 err = mlxsw_core_trap_register(mlxsw_core, &mlxsw_emad_rx_listener, 777 mlxsw_core); 778 if (err) 779 goto err_trap_register; 780 781 err = mlxsw_core->driver->basic_trap_groups_set(mlxsw_core); 782 if (err) 783 goto err_emad_trap_set; 784 mlxsw_core->emad.use_emad = true; 785 786 return 0; 787 788 err_emad_trap_set: 789 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_emad_rx_listener, 790 mlxsw_core); 791 err_trap_register: 792 destroy_workqueue(mlxsw_core->emad_wq); 793 return err; 794 } 795 796 static void mlxsw_emad_fini(struct mlxsw_core *mlxsw_core) 797 { 798 799 if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX)) 800 return; 801 802 mlxsw_core->emad.use_emad = false; 803 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_emad_rx_listener, 804 mlxsw_core); 805 destroy_workqueue(mlxsw_core->emad_wq); 806 } 807 808 static struct sk_buff *mlxsw_emad_alloc(const struct mlxsw_core *mlxsw_core, 809 u16 reg_len, bool enable_string_tlv) 810 { 811 struct sk_buff *skb; 812 u16 emad_len; 813 814 emad_len = (reg_len + sizeof(u32) + MLXSW_EMAD_ETH_HDR_LEN + 815 (MLXSW_EMAD_OP_TLV_LEN + MLXSW_EMAD_END_TLV_LEN) * 816 sizeof(u32) + mlxsw_core->driver->txhdr_len); 817 if (enable_string_tlv) 818 emad_len += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32); 819 if (emad_len > MLXSW_EMAD_MAX_FRAME_LEN) 820 return NULL; 821 822 skb = netdev_alloc_skb(NULL, emad_len); 823 if (!skb) 824 return NULL; 825 memset(skb->data, 0, emad_len); 826 skb_reserve(skb, emad_len); 827 828 return skb; 829 } 830 831 static int mlxsw_emad_reg_access(struct mlxsw_core *mlxsw_core, 832 const struct mlxsw_reg_info *reg, 833 char *payload, 834 enum mlxsw_core_reg_access_type type, 835 struct mlxsw_reg_trans *trans, 836 struct list_head *bulk_list, 837 mlxsw_reg_trans_cb_t *cb, 838 unsigned long cb_priv, u64 tid) 839 { 840 bool enable_string_tlv; 841 struct sk_buff *skb; 842 int err; 843 844 dev_dbg(mlxsw_core->bus_info->dev, "EMAD reg access (tid=%llx,reg_id=%x(%s),type=%s)\n", 845 tid, reg->id, mlxsw_reg_id_str(reg->id), 846 mlxsw_core_reg_access_type_str(type)); 847 848 /* Since this can be changed during emad_reg_access, read it once and 849 * use the value all the way. 850 */ 851 enable_string_tlv = mlxsw_core->emad.enable_string_tlv; 852 853 skb = mlxsw_emad_alloc(mlxsw_core, reg->len, enable_string_tlv); 854 if (!skb) 855 return -ENOMEM; 856 857 list_add_tail(&trans->bulk_list, bulk_list); 858 trans->core = mlxsw_core; 859 trans->tx_skb = skb; 860 trans->tx_info.local_port = MLXSW_PORT_CPU_PORT; 861 trans->tx_info.is_emad = true; 862 INIT_DELAYED_WORK(&trans->timeout_dw, mlxsw_emad_trans_timeout_work); 863 trans->tid = tid; 864 init_completion(&trans->completion); 865 trans->cb = cb; 866 trans->cb_priv = cb_priv; 867 trans->reg = reg; 868 trans->type = type; 869 870 mlxsw_emad_construct(skb, reg, payload, type, trans->tid, 871 enable_string_tlv); 872 mlxsw_core->driver->txhdr_construct(skb, &trans->tx_info); 873 874 spin_lock_bh(&mlxsw_core->emad.trans_list_lock); 875 list_add_tail_rcu(&trans->list, &mlxsw_core->emad.trans_list); 876 spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); 877 err = mlxsw_emad_transmit(mlxsw_core, trans); 878 if (err) 879 goto err_out; 880 return 0; 881 882 err_out: 883 spin_lock_bh(&mlxsw_core->emad.trans_list_lock); 884 list_del_rcu(&trans->list); 885 spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); 886 list_del(&trans->bulk_list); 887 dev_kfree_skb(trans->tx_skb); 888 return err; 889 } 890 891 /***************** 892 * Core functions 893 *****************/ 894 895 int mlxsw_core_driver_register(struct mlxsw_driver *mlxsw_driver) 896 { 897 spin_lock(&mlxsw_core_driver_list_lock); 898 list_add_tail(&mlxsw_driver->list, &mlxsw_core_driver_list); 899 spin_unlock(&mlxsw_core_driver_list_lock); 900 return 0; 901 } 902 EXPORT_SYMBOL(mlxsw_core_driver_register); 903 904 void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver) 905 { 906 spin_lock(&mlxsw_core_driver_list_lock); 907 list_del(&mlxsw_driver->list); 908 spin_unlock(&mlxsw_core_driver_list_lock); 909 } 910 EXPORT_SYMBOL(mlxsw_core_driver_unregister); 911 912 static struct mlxsw_driver *__driver_find(const char *kind) 913 { 914 struct mlxsw_driver *mlxsw_driver; 915 916 list_for_each_entry(mlxsw_driver, &mlxsw_core_driver_list, list) { 917 if (strcmp(mlxsw_driver->kind, kind) == 0) 918 return mlxsw_driver; 919 } 920 return NULL; 921 } 922 923 static struct mlxsw_driver *mlxsw_core_driver_get(const char *kind) 924 { 925 struct mlxsw_driver *mlxsw_driver; 926 927 spin_lock(&mlxsw_core_driver_list_lock); 928 mlxsw_driver = __driver_find(kind); 929 spin_unlock(&mlxsw_core_driver_list_lock); 930 return mlxsw_driver; 931 } 932 933 struct mlxsw_core_fw_info { 934 struct mlxfw_dev mlxfw_dev; 935 struct mlxsw_core *mlxsw_core; 936 }; 937 938 static int mlxsw_core_fw_component_query(struct mlxfw_dev *mlxfw_dev, 939 u16 component_index, u32 *p_max_size, 940 u8 *p_align_bits, u16 *p_max_write_size) 941 { 942 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 943 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 944 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 945 char mcqi_pl[MLXSW_REG_MCQI_LEN]; 946 int err; 947 948 mlxsw_reg_mcqi_pack(mcqi_pl, component_index); 949 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcqi), mcqi_pl); 950 if (err) 951 return err; 952 mlxsw_reg_mcqi_unpack(mcqi_pl, p_max_size, p_align_bits, p_max_write_size); 953 954 *p_align_bits = max_t(u8, *p_align_bits, 2); 955 *p_max_write_size = min_t(u16, *p_max_write_size, MLXSW_REG_MCDA_MAX_DATA_LEN); 956 return 0; 957 } 958 959 static int mlxsw_core_fw_fsm_lock(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle) 960 { 961 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 962 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 963 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 964 char mcc_pl[MLXSW_REG_MCC_LEN]; 965 u8 control_state; 966 int err; 967 968 mlxsw_reg_mcc_pack(mcc_pl, 0, 0, 0, 0); 969 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 970 if (err) 971 return err; 972 973 mlxsw_reg_mcc_unpack(mcc_pl, fwhandle, NULL, &control_state); 974 if (control_state != MLXFW_FSM_STATE_IDLE) 975 return -EBUSY; 976 977 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_LOCK_UPDATE_HANDLE, 0, *fwhandle, 0); 978 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 979 } 980 981 static int mlxsw_core_fw_fsm_component_update(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, 982 u16 component_index, u32 component_size) 983 { 984 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 985 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 986 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 987 char mcc_pl[MLXSW_REG_MCC_LEN]; 988 989 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_UPDATE_COMPONENT, 990 component_index, fwhandle, component_size); 991 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 992 } 993 994 static int mlxsw_core_fw_fsm_block_download(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, 995 u8 *data, u16 size, u32 offset) 996 { 997 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 998 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 999 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1000 char mcda_pl[MLXSW_REG_MCDA_LEN]; 1001 1002 mlxsw_reg_mcda_pack(mcda_pl, fwhandle, offset, size, data); 1003 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcda), mcda_pl); 1004 } 1005 1006 static int mlxsw_core_fw_fsm_component_verify(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, 1007 u16 component_index) 1008 { 1009 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 1010 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 1011 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1012 char mcc_pl[MLXSW_REG_MCC_LEN]; 1013 1014 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_VERIFY_COMPONENT, 1015 component_index, fwhandle, 0); 1016 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 1017 } 1018 1019 static int mlxsw_core_fw_fsm_activate(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) 1020 { 1021 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 1022 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 1023 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1024 char mcc_pl[MLXSW_REG_MCC_LEN]; 1025 1026 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_ACTIVATE, 0, fwhandle, 0); 1027 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 1028 } 1029 1030 static int mlxsw_core_fw_fsm_query_state(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, 1031 enum mlxfw_fsm_state *fsm_state, 1032 enum mlxfw_fsm_state_err *fsm_state_err) 1033 { 1034 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 1035 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 1036 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1037 char mcc_pl[MLXSW_REG_MCC_LEN]; 1038 u8 control_state; 1039 u8 error_code; 1040 int err; 1041 1042 mlxsw_reg_mcc_pack(mcc_pl, 0, 0, fwhandle, 0); 1043 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 1044 if (err) 1045 return err; 1046 1047 mlxsw_reg_mcc_unpack(mcc_pl, NULL, &error_code, &control_state); 1048 *fsm_state = control_state; 1049 *fsm_state_err = min_t(enum mlxfw_fsm_state_err, error_code, MLXFW_FSM_STATE_ERR_MAX); 1050 return 0; 1051 } 1052 1053 static void mlxsw_core_fw_fsm_cancel(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) 1054 { 1055 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 1056 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 1057 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1058 char mcc_pl[MLXSW_REG_MCC_LEN]; 1059 1060 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_CANCEL, 0, fwhandle, 0); 1061 mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 1062 } 1063 1064 static void mlxsw_core_fw_fsm_release(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) 1065 { 1066 struct mlxsw_core_fw_info *mlxsw_core_fw_info = 1067 container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); 1068 struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; 1069 char mcc_pl[MLXSW_REG_MCC_LEN]; 1070 1071 mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_RELEASE_UPDATE_HANDLE, 0, fwhandle, 0); 1072 mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); 1073 } 1074 1075 static const struct mlxfw_dev_ops mlxsw_core_fw_mlxsw_dev_ops = { 1076 .component_query = mlxsw_core_fw_component_query, 1077 .fsm_lock = mlxsw_core_fw_fsm_lock, 1078 .fsm_component_update = mlxsw_core_fw_fsm_component_update, 1079 .fsm_block_download = mlxsw_core_fw_fsm_block_download, 1080 .fsm_component_verify = mlxsw_core_fw_fsm_component_verify, 1081 .fsm_activate = mlxsw_core_fw_fsm_activate, 1082 .fsm_query_state = mlxsw_core_fw_fsm_query_state, 1083 .fsm_cancel = mlxsw_core_fw_fsm_cancel, 1084 .fsm_release = mlxsw_core_fw_fsm_release, 1085 }; 1086 1087 static int mlxsw_core_fw_flash(struct mlxsw_core *mlxsw_core, const struct firmware *firmware, 1088 struct netlink_ext_ack *extack) 1089 { 1090 struct mlxsw_core_fw_info mlxsw_core_fw_info = { 1091 .mlxfw_dev = { 1092 .ops = &mlxsw_core_fw_mlxsw_dev_ops, 1093 .psid = mlxsw_core->bus_info->psid, 1094 .psid_size = strlen(mlxsw_core->bus_info->psid), 1095 .devlink = priv_to_devlink(mlxsw_core), 1096 }, 1097 .mlxsw_core = mlxsw_core 1098 }; 1099 int err; 1100 1101 mlxsw_core->fw_flash_in_progress = true; 1102 err = mlxfw_firmware_flash(&mlxsw_core_fw_info.mlxfw_dev, firmware, extack); 1103 mlxsw_core->fw_flash_in_progress = false; 1104 1105 return err; 1106 } 1107 1108 static int mlxsw_core_fw_rev_validate(struct mlxsw_core *mlxsw_core, 1109 const struct mlxsw_bus_info *mlxsw_bus_info, 1110 const struct mlxsw_fw_rev *req_rev, 1111 const char *filename) 1112 { 1113 const struct mlxsw_fw_rev *rev = &mlxsw_bus_info->fw_rev; 1114 union devlink_param_value value; 1115 const struct firmware *firmware; 1116 int err; 1117 1118 /* Don't check if driver does not require it */ 1119 if (!req_rev || !filename) 1120 return 0; 1121 1122 /* Don't check if devlink 'fw_load_policy' param is 'flash' */ 1123 err = devlink_param_driverinit_value_get(priv_to_devlink(mlxsw_core), 1124 DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, 1125 &value); 1126 if (err) 1127 return err; 1128 if (value.vu8 == DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH) 1129 return 0; 1130 1131 /* Validate driver & FW are compatible */ 1132 if (rev->major != req_rev->major) { 1133 WARN(1, "Mismatch in major FW version [%d:%d] is never expected; Please contact support\n", 1134 rev->major, req_rev->major); 1135 return -EINVAL; 1136 } 1137 if (mlxsw_core_fw_rev_minor_subminor_validate(rev, req_rev)) 1138 return 0; 1139 1140 dev_err(mlxsw_bus_info->dev, "The firmware version %d.%d.%d is incompatible with the driver (required >= %d.%d.%d)\n", 1141 rev->major, rev->minor, rev->subminor, req_rev->major, 1142 req_rev->minor, req_rev->subminor); 1143 dev_info(mlxsw_bus_info->dev, "Flashing firmware using file %s\n", filename); 1144 1145 err = request_firmware_direct(&firmware, filename, mlxsw_bus_info->dev); 1146 if (err) { 1147 dev_err(mlxsw_bus_info->dev, "Could not request firmware file %s\n", filename); 1148 return err; 1149 } 1150 1151 err = mlxsw_core_fw_flash(mlxsw_core, firmware, NULL); 1152 release_firmware(firmware); 1153 if (err) 1154 dev_err(mlxsw_bus_info->dev, "Could not upgrade firmware\n"); 1155 1156 /* On FW flash success, tell the caller FW reset is needed 1157 * if current FW supports it. 1158 */ 1159 if (rev->minor >= req_rev->can_reset_minor) 1160 return err ? err : -EAGAIN; 1161 else 1162 return 0; 1163 } 1164 1165 static int mlxsw_core_fw_flash_update(struct mlxsw_core *mlxsw_core, 1166 struct devlink_flash_update_params *params, 1167 struct netlink_ext_ack *extack) 1168 { 1169 return mlxsw_core_fw_flash(mlxsw_core, params->fw, extack); 1170 } 1171 1172 static int mlxsw_core_devlink_param_fw_load_policy_validate(struct devlink *devlink, u32 id, 1173 union devlink_param_value val, 1174 struct netlink_ext_ack *extack) 1175 { 1176 if (val.vu8 != DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_DRIVER && 1177 val.vu8 != DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH) { 1178 NL_SET_ERR_MSG_MOD(extack, "'fw_load_policy' must be 'driver' or 'flash'"); 1179 return -EINVAL; 1180 } 1181 1182 return 0; 1183 } 1184 1185 static const struct devlink_param mlxsw_core_fw_devlink_params[] = { 1186 DEVLINK_PARAM_GENERIC(FW_LOAD_POLICY, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), NULL, NULL, 1187 mlxsw_core_devlink_param_fw_load_policy_validate), 1188 }; 1189 1190 static int mlxsw_core_fw_params_register(struct mlxsw_core *mlxsw_core) 1191 { 1192 struct devlink *devlink = priv_to_devlink(mlxsw_core); 1193 union devlink_param_value value; 1194 int err; 1195 1196 err = devlink_params_register(devlink, mlxsw_core_fw_devlink_params, 1197 ARRAY_SIZE(mlxsw_core_fw_devlink_params)); 1198 if (err) 1199 return err; 1200 1201 value.vu8 = DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_DRIVER; 1202 devlink_param_driverinit_value_set(devlink, DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, value); 1203 return 0; 1204 } 1205 1206 static void mlxsw_core_fw_params_unregister(struct mlxsw_core *mlxsw_core) 1207 { 1208 devlink_params_unregister(priv_to_devlink(mlxsw_core), mlxsw_core_fw_devlink_params, 1209 ARRAY_SIZE(mlxsw_core_fw_devlink_params)); 1210 } 1211 1212 static int mlxsw_devlink_port_split(struct devlink *devlink, 1213 unsigned int port_index, 1214 unsigned int count, 1215 struct netlink_ext_ack *extack) 1216 { 1217 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1218 1219 if (port_index >= mlxsw_core->max_ports) { 1220 NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports"); 1221 return -EINVAL; 1222 } 1223 if (!mlxsw_core->driver->port_split) 1224 return -EOPNOTSUPP; 1225 return mlxsw_core->driver->port_split(mlxsw_core, port_index, count, 1226 extack); 1227 } 1228 1229 static int mlxsw_devlink_port_unsplit(struct devlink *devlink, 1230 unsigned int port_index, 1231 struct netlink_ext_ack *extack) 1232 { 1233 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1234 1235 if (port_index >= mlxsw_core->max_ports) { 1236 NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports"); 1237 return -EINVAL; 1238 } 1239 if (!mlxsw_core->driver->port_unsplit) 1240 return -EOPNOTSUPP; 1241 return mlxsw_core->driver->port_unsplit(mlxsw_core, port_index, 1242 extack); 1243 } 1244 1245 static int 1246 mlxsw_devlink_sb_pool_get(struct devlink *devlink, 1247 unsigned int sb_index, u16 pool_index, 1248 struct devlink_sb_pool_info *pool_info) 1249 { 1250 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1251 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1252 1253 if (!mlxsw_driver->sb_pool_get) 1254 return -EOPNOTSUPP; 1255 return mlxsw_driver->sb_pool_get(mlxsw_core, sb_index, 1256 pool_index, pool_info); 1257 } 1258 1259 static int 1260 mlxsw_devlink_sb_pool_set(struct devlink *devlink, 1261 unsigned int sb_index, u16 pool_index, u32 size, 1262 enum devlink_sb_threshold_type threshold_type, 1263 struct netlink_ext_ack *extack) 1264 { 1265 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1266 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1267 1268 if (!mlxsw_driver->sb_pool_set) 1269 return -EOPNOTSUPP; 1270 return mlxsw_driver->sb_pool_set(mlxsw_core, sb_index, 1271 pool_index, size, threshold_type, 1272 extack); 1273 } 1274 1275 static void *__dl_port(struct devlink_port *devlink_port) 1276 { 1277 return container_of(devlink_port, struct mlxsw_core_port, devlink_port); 1278 } 1279 1280 static int mlxsw_devlink_port_type_set(struct devlink_port *devlink_port, 1281 enum devlink_port_type port_type) 1282 { 1283 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1284 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1285 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1286 1287 if (!mlxsw_driver->port_type_set) 1288 return -EOPNOTSUPP; 1289 1290 return mlxsw_driver->port_type_set(mlxsw_core, 1291 mlxsw_core_port->local_port, 1292 port_type); 1293 } 1294 1295 static int mlxsw_devlink_sb_port_pool_get(struct devlink_port *devlink_port, 1296 unsigned int sb_index, u16 pool_index, 1297 u32 *p_threshold) 1298 { 1299 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1300 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1301 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1302 1303 if (!mlxsw_driver->sb_port_pool_get || 1304 !mlxsw_core_port_check(mlxsw_core_port)) 1305 return -EOPNOTSUPP; 1306 return mlxsw_driver->sb_port_pool_get(mlxsw_core_port, sb_index, 1307 pool_index, p_threshold); 1308 } 1309 1310 static int mlxsw_devlink_sb_port_pool_set(struct devlink_port *devlink_port, 1311 unsigned int sb_index, u16 pool_index, 1312 u32 threshold, 1313 struct netlink_ext_ack *extack) 1314 { 1315 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1316 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1317 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1318 1319 if (!mlxsw_driver->sb_port_pool_set || 1320 !mlxsw_core_port_check(mlxsw_core_port)) 1321 return -EOPNOTSUPP; 1322 return mlxsw_driver->sb_port_pool_set(mlxsw_core_port, sb_index, 1323 pool_index, threshold, extack); 1324 } 1325 1326 static int 1327 mlxsw_devlink_sb_tc_pool_bind_get(struct devlink_port *devlink_port, 1328 unsigned int sb_index, u16 tc_index, 1329 enum devlink_sb_pool_type pool_type, 1330 u16 *p_pool_index, u32 *p_threshold) 1331 { 1332 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1333 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1334 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1335 1336 if (!mlxsw_driver->sb_tc_pool_bind_get || 1337 !mlxsw_core_port_check(mlxsw_core_port)) 1338 return -EOPNOTSUPP; 1339 return mlxsw_driver->sb_tc_pool_bind_get(mlxsw_core_port, sb_index, 1340 tc_index, pool_type, 1341 p_pool_index, p_threshold); 1342 } 1343 1344 static int 1345 mlxsw_devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port, 1346 unsigned int sb_index, u16 tc_index, 1347 enum devlink_sb_pool_type pool_type, 1348 u16 pool_index, u32 threshold, 1349 struct netlink_ext_ack *extack) 1350 { 1351 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1352 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1353 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1354 1355 if (!mlxsw_driver->sb_tc_pool_bind_set || 1356 !mlxsw_core_port_check(mlxsw_core_port)) 1357 return -EOPNOTSUPP; 1358 return mlxsw_driver->sb_tc_pool_bind_set(mlxsw_core_port, sb_index, 1359 tc_index, pool_type, 1360 pool_index, threshold, extack); 1361 } 1362 1363 static int mlxsw_devlink_sb_occ_snapshot(struct devlink *devlink, 1364 unsigned int sb_index) 1365 { 1366 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1367 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1368 1369 if (!mlxsw_driver->sb_occ_snapshot) 1370 return -EOPNOTSUPP; 1371 return mlxsw_driver->sb_occ_snapshot(mlxsw_core, sb_index); 1372 } 1373 1374 static int mlxsw_devlink_sb_occ_max_clear(struct devlink *devlink, 1375 unsigned int sb_index) 1376 { 1377 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1378 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1379 1380 if (!mlxsw_driver->sb_occ_max_clear) 1381 return -EOPNOTSUPP; 1382 return mlxsw_driver->sb_occ_max_clear(mlxsw_core, sb_index); 1383 } 1384 1385 static int 1386 mlxsw_devlink_sb_occ_port_pool_get(struct devlink_port *devlink_port, 1387 unsigned int sb_index, u16 pool_index, 1388 u32 *p_cur, u32 *p_max) 1389 { 1390 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1391 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1392 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1393 1394 if (!mlxsw_driver->sb_occ_port_pool_get || 1395 !mlxsw_core_port_check(mlxsw_core_port)) 1396 return -EOPNOTSUPP; 1397 return mlxsw_driver->sb_occ_port_pool_get(mlxsw_core_port, sb_index, 1398 pool_index, p_cur, p_max); 1399 } 1400 1401 static int 1402 mlxsw_devlink_sb_occ_tc_port_bind_get(struct devlink_port *devlink_port, 1403 unsigned int sb_index, u16 tc_index, 1404 enum devlink_sb_pool_type pool_type, 1405 u32 *p_cur, u32 *p_max) 1406 { 1407 struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); 1408 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1409 struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); 1410 1411 if (!mlxsw_driver->sb_occ_tc_port_bind_get || 1412 !mlxsw_core_port_check(mlxsw_core_port)) 1413 return -EOPNOTSUPP; 1414 return mlxsw_driver->sb_occ_tc_port_bind_get(mlxsw_core_port, 1415 sb_index, tc_index, 1416 pool_type, p_cur, p_max); 1417 } 1418 1419 static int 1420 mlxsw_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, 1421 struct netlink_ext_ack *extack) 1422 { 1423 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1424 char fw_info_psid[MLXSW_REG_MGIR_FW_INFO_PSID_SIZE]; 1425 u32 hw_rev, fw_major, fw_minor, fw_sub_minor; 1426 char mgir_pl[MLXSW_REG_MGIR_LEN]; 1427 char buf[32]; 1428 int err; 1429 1430 err = devlink_info_driver_name_put(req, 1431 mlxsw_core->bus_info->device_kind); 1432 if (err) 1433 return err; 1434 1435 mlxsw_reg_mgir_pack(mgir_pl); 1436 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mgir), mgir_pl); 1437 if (err) 1438 return err; 1439 mlxsw_reg_mgir_unpack(mgir_pl, &hw_rev, fw_info_psid, &fw_major, 1440 &fw_minor, &fw_sub_minor); 1441 1442 sprintf(buf, "%X", hw_rev); 1443 err = devlink_info_version_fixed_put(req, "hw.revision", buf); 1444 if (err) 1445 return err; 1446 1447 err = devlink_info_version_fixed_put(req, 1448 DEVLINK_INFO_VERSION_GENERIC_FW_PSID, 1449 fw_info_psid); 1450 if (err) 1451 return err; 1452 1453 sprintf(buf, "%d.%d.%d", fw_major, fw_minor, fw_sub_minor); 1454 err = devlink_info_version_running_put(req, "fw.version", buf); 1455 if (err) 1456 return err; 1457 1458 return devlink_info_version_running_put(req, 1459 DEVLINK_INFO_VERSION_GENERIC_FW, 1460 buf); 1461 } 1462 1463 static int 1464 mlxsw_devlink_core_bus_device_reload_down(struct devlink *devlink, 1465 bool netns_change, enum devlink_reload_action action, 1466 enum devlink_reload_limit limit, 1467 struct netlink_ext_ack *extack) 1468 { 1469 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1470 1471 if (!(mlxsw_core->bus->features & MLXSW_BUS_F_RESET)) 1472 return -EOPNOTSUPP; 1473 1474 mlxsw_core_bus_device_unregister(mlxsw_core, true); 1475 return 0; 1476 } 1477 1478 static int 1479 mlxsw_devlink_core_bus_device_reload_up(struct devlink *devlink, enum devlink_reload_action action, 1480 enum devlink_reload_limit limit, u32 *actions_performed, 1481 struct netlink_ext_ack *extack) 1482 { 1483 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1484 1485 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | 1486 BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE); 1487 return mlxsw_core_bus_device_register(mlxsw_core->bus_info, 1488 mlxsw_core->bus, 1489 mlxsw_core->bus_priv, true, 1490 devlink, extack); 1491 } 1492 1493 static int mlxsw_devlink_flash_update(struct devlink *devlink, 1494 struct devlink_flash_update_params *params, 1495 struct netlink_ext_ack *extack) 1496 { 1497 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1498 1499 return mlxsw_core_fw_flash_update(mlxsw_core, params, extack); 1500 } 1501 1502 static int mlxsw_devlink_trap_init(struct devlink *devlink, 1503 const struct devlink_trap *trap, 1504 void *trap_ctx) 1505 { 1506 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1507 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1508 1509 if (!mlxsw_driver->trap_init) 1510 return -EOPNOTSUPP; 1511 return mlxsw_driver->trap_init(mlxsw_core, trap, trap_ctx); 1512 } 1513 1514 static void mlxsw_devlink_trap_fini(struct devlink *devlink, 1515 const struct devlink_trap *trap, 1516 void *trap_ctx) 1517 { 1518 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1519 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1520 1521 if (!mlxsw_driver->trap_fini) 1522 return; 1523 mlxsw_driver->trap_fini(mlxsw_core, trap, trap_ctx); 1524 } 1525 1526 static int mlxsw_devlink_trap_action_set(struct devlink *devlink, 1527 const struct devlink_trap *trap, 1528 enum devlink_trap_action action, 1529 struct netlink_ext_ack *extack) 1530 { 1531 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1532 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1533 1534 if (!mlxsw_driver->trap_action_set) 1535 return -EOPNOTSUPP; 1536 return mlxsw_driver->trap_action_set(mlxsw_core, trap, action, extack); 1537 } 1538 1539 static int 1540 mlxsw_devlink_trap_group_init(struct devlink *devlink, 1541 const struct devlink_trap_group *group) 1542 { 1543 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1544 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1545 1546 if (!mlxsw_driver->trap_group_init) 1547 return -EOPNOTSUPP; 1548 return mlxsw_driver->trap_group_init(mlxsw_core, group); 1549 } 1550 1551 static int 1552 mlxsw_devlink_trap_group_set(struct devlink *devlink, 1553 const struct devlink_trap_group *group, 1554 const struct devlink_trap_policer *policer, 1555 struct netlink_ext_ack *extack) 1556 { 1557 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1558 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1559 1560 if (!mlxsw_driver->trap_group_set) 1561 return -EOPNOTSUPP; 1562 return mlxsw_driver->trap_group_set(mlxsw_core, group, policer, extack); 1563 } 1564 1565 static int 1566 mlxsw_devlink_trap_policer_init(struct devlink *devlink, 1567 const struct devlink_trap_policer *policer) 1568 { 1569 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1570 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1571 1572 if (!mlxsw_driver->trap_policer_init) 1573 return -EOPNOTSUPP; 1574 return mlxsw_driver->trap_policer_init(mlxsw_core, policer); 1575 } 1576 1577 static void 1578 mlxsw_devlink_trap_policer_fini(struct devlink *devlink, 1579 const struct devlink_trap_policer *policer) 1580 { 1581 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1582 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1583 1584 if (!mlxsw_driver->trap_policer_fini) 1585 return; 1586 mlxsw_driver->trap_policer_fini(mlxsw_core, policer); 1587 } 1588 1589 static int 1590 mlxsw_devlink_trap_policer_set(struct devlink *devlink, 1591 const struct devlink_trap_policer *policer, 1592 u64 rate, u64 burst, 1593 struct netlink_ext_ack *extack) 1594 { 1595 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1596 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1597 1598 if (!mlxsw_driver->trap_policer_set) 1599 return -EOPNOTSUPP; 1600 return mlxsw_driver->trap_policer_set(mlxsw_core, policer, rate, burst, 1601 extack); 1602 } 1603 1604 static int 1605 mlxsw_devlink_trap_policer_counter_get(struct devlink *devlink, 1606 const struct devlink_trap_policer *policer, 1607 u64 *p_drops) 1608 { 1609 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1610 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1611 1612 if (!mlxsw_driver->trap_policer_counter_get) 1613 return -EOPNOTSUPP; 1614 return mlxsw_driver->trap_policer_counter_get(mlxsw_core, policer, 1615 p_drops); 1616 } 1617 1618 static const struct devlink_ops mlxsw_devlink_ops = { 1619 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | 1620 BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE), 1621 .reload_down = mlxsw_devlink_core_bus_device_reload_down, 1622 .reload_up = mlxsw_devlink_core_bus_device_reload_up, 1623 .port_type_set = mlxsw_devlink_port_type_set, 1624 .port_split = mlxsw_devlink_port_split, 1625 .port_unsplit = mlxsw_devlink_port_unsplit, 1626 .sb_pool_get = mlxsw_devlink_sb_pool_get, 1627 .sb_pool_set = mlxsw_devlink_sb_pool_set, 1628 .sb_port_pool_get = mlxsw_devlink_sb_port_pool_get, 1629 .sb_port_pool_set = mlxsw_devlink_sb_port_pool_set, 1630 .sb_tc_pool_bind_get = mlxsw_devlink_sb_tc_pool_bind_get, 1631 .sb_tc_pool_bind_set = mlxsw_devlink_sb_tc_pool_bind_set, 1632 .sb_occ_snapshot = mlxsw_devlink_sb_occ_snapshot, 1633 .sb_occ_max_clear = mlxsw_devlink_sb_occ_max_clear, 1634 .sb_occ_port_pool_get = mlxsw_devlink_sb_occ_port_pool_get, 1635 .sb_occ_tc_port_bind_get = mlxsw_devlink_sb_occ_tc_port_bind_get, 1636 .info_get = mlxsw_devlink_info_get, 1637 .flash_update = mlxsw_devlink_flash_update, 1638 .trap_init = mlxsw_devlink_trap_init, 1639 .trap_fini = mlxsw_devlink_trap_fini, 1640 .trap_action_set = mlxsw_devlink_trap_action_set, 1641 .trap_group_init = mlxsw_devlink_trap_group_init, 1642 .trap_group_set = mlxsw_devlink_trap_group_set, 1643 .trap_policer_init = mlxsw_devlink_trap_policer_init, 1644 .trap_policer_fini = mlxsw_devlink_trap_policer_fini, 1645 .trap_policer_set = mlxsw_devlink_trap_policer_set, 1646 .trap_policer_counter_get = mlxsw_devlink_trap_policer_counter_get, 1647 }; 1648 1649 static int mlxsw_core_params_register(struct mlxsw_core *mlxsw_core) 1650 { 1651 int err; 1652 1653 err = mlxsw_core_fw_params_register(mlxsw_core); 1654 if (err) 1655 return err; 1656 1657 if (mlxsw_core->driver->params_register) { 1658 err = mlxsw_core->driver->params_register(mlxsw_core); 1659 if (err) 1660 goto err_params_register; 1661 } 1662 return 0; 1663 1664 err_params_register: 1665 mlxsw_core_fw_params_unregister(mlxsw_core); 1666 return err; 1667 } 1668 1669 static void mlxsw_core_params_unregister(struct mlxsw_core *mlxsw_core) 1670 { 1671 mlxsw_core_fw_params_unregister(mlxsw_core); 1672 if (mlxsw_core->driver->params_register) 1673 mlxsw_core->driver->params_unregister(mlxsw_core); 1674 } 1675 1676 struct mlxsw_core_health_event { 1677 struct mlxsw_core *mlxsw_core; 1678 char mfde_pl[MLXSW_REG_MFDE_LEN]; 1679 struct work_struct work; 1680 }; 1681 1682 static void mlxsw_core_health_event_work(struct work_struct *work) 1683 { 1684 struct mlxsw_core_health_event *event; 1685 struct mlxsw_core *mlxsw_core; 1686 1687 event = container_of(work, struct mlxsw_core_health_event, work); 1688 mlxsw_core = event->mlxsw_core; 1689 devlink_health_report(mlxsw_core->health.fw_fatal, "FW fatal event occurred", 1690 event->mfde_pl); 1691 kfree(event); 1692 } 1693 1694 static void mlxsw_core_health_listener_func(const struct mlxsw_reg_info *reg, 1695 char *mfde_pl, void *priv) 1696 { 1697 struct mlxsw_core_health_event *event; 1698 struct mlxsw_core *mlxsw_core = priv; 1699 1700 event = kmalloc(sizeof(*event), GFP_ATOMIC); 1701 if (!event) 1702 return; 1703 event->mlxsw_core = mlxsw_core; 1704 memcpy(event->mfde_pl, mfde_pl, sizeof(event->mfde_pl)); 1705 INIT_WORK(&event->work, mlxsw_core_health_event_work); 1706 mlxsw_core_schedule_work(&event->work); 1707 } 1708 1709 static const struct mlxsw_listener mlxsw_core_health_listener = 1710 MLXSW_EVENTL(mlxsw_core_health_listener_func, MFDE, MFDE); 1711 1712 static int mlxsw_core_health_fw_fatal_dump(struct devlink_health_reporter *reporter, 1713 struct devlink_fmsg *fmsg, void *priv_ctx, 1714 struct netlink_ext_ack *extack) 1715 { 1716 char *mfde_pl = priv_ctx; 1717 char *val_str; 1718 u8 event_id; 1719 u32 val; 1720 int err; 1721 1722 if (!priv_ctx) 1723 /* User-triggered dumps are not possible */ 1724 return -EOPNOTSUPP; 1725 1726 val = mlxsw_reg_mfde_irisc_id_get(mfde_pl); 1727 err = devlink_fmsg_u8_pair_put(fmsg, "irisc_id", val); 1728 if (err) 1729 return err; 1730 err = devlink_fmsg_arr_pair_nest_start(fmsg, "event"); 1731 if (err) 1732 return err; 1733 1734 event_id = mlxsw_reg_mfde_event_id_get(mfde_pl); 1735 err = devlink_fmsg_u32_pair_put(fmsg, "id", event_id); 1736 if (err) 1737 return err; 1738 switch (event_id) { 1739 case MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO: 1740 val_str = "CR space timeout"; 1741 break; 1742 case MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP: 1743 val_str = "KVD insertion machine stopped"; 1744 break; 1745 default: 1746 val_str = NULL; 1747 } 1748 if (val_str) { 1749 err = devlink_fmsg_string_pair_put(fmsg, "desc", val_str); 1750 if (err) 1751 return err; 1752 } 1753 err = devlink_fmsg_arr_pair_nest_end(fmsg); 1754 if (err) 1755 return err; 1756 1757 val = mlxsw_reg_mfde_method_get(mfde_pl); 1758 switch (val) { 1759 case MLXSW_REG_MFDE_METHOD_QUERY: 1760 val_str = "query"; 1761 break; 1762 case MLXSW_REG_MFDE_METHOD_WRITE: 1763 val_str = "write"; 1764 break; 1765 default: 1766 val_str = NULL; 1767 } 1768 if (val_str) { 1769 err = devlink_fmsg_string_pair_put(fmsg, "method", val_str); 1770 if (err) 1771 return err; 1772 } 1773 1774 val = mlxsw_reg_mfde_long_process_get(mfde_pl); 1775 err = devlink_fmsg_bool_pair_put(fmsg, "long_process", val); 1776 if (err) 1777 return err; 1778 1779 val = mlxsw_reg_mfde_command_type_get(mfde_pl); 1780 switch (val) { 1781 case MLXSW_REG_MFDE_COMMAND_TYPE_MAD: 1782 val_str = "mad"; 1783 break; 1784 case MLXSW_REG_MFDE_COMMAND_TYPE_EMAD: 1785 val_str = "emad"; 1786 break; 1787 case MLXSW_REG_MFDE_COMMAND_TYPE_CMDIF: 1788 val_str = "cmdif"; 1789 break; 1790 default: 1791 val_str = NULL; 1792 } 1793 if (val_str) { 1794 err = devlink_fmsg_string_pair_put(fmsg, "command_type", val_str); 1795 if (err) 1796 return err; 1797 } 1798 1799 val = mlxsw_reg_mfde_reg_attr_id_get(mfde_pl); 1800 err = devlink_fmsg_u32_pair_put(fmsg, "reg_attr_id", val); 1801 if (err) 1802 return err; 1803 1804 if (event_id == MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO) { 1805 val = mlxsw_reg_mfde_log_address_get(mfde_pl); 1806 err = devlink_fmsg_u32_pair_put(fmsg, "log_address", val); 1807 if (err) 1808 return err; 1809 val = mlxsw_reg_mfde_log_id_get(mfde_pl); 1810 err = devlink_fmsg_u8_pair_put(fmsg, "log_irisc_id", val); 1811 if (err) 1812 return err; 1813 val = mlxsw_reg_mfde_log_ip_get(mfde_pl); 1814 err = devlink_fmsg_u64_pair_put(fmsg, "log_ip", val); 1815 if (err) 1816 return err; 1817 } else if (event_id == MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP) { 1818 val = mlxsw_reg_mfde_pipes_mask_get(mfde_pl); 1819 err = devlink_fmsg_u32_pair_put(fmsg, "pipes_mask", val); 1820 if (err) 1821 return err; 1822 } 1823 1824 return 0; 1825 } 1826 1827 static int 1828 mlxsw_core_health_fw_fatal_test(struct devlink_health_reporter *reporter, 1829 struct netlink_ext_ack *extack) 1830 { 1831 struct mlxsw_core *mlxsw_core = devlink_health_reporter_priv(reporter); 1832 char mfgd_pl[MLXSW_REG_MFGD_LEN]; 1833 int err; 1834 1835 /* Read the register first to make sure no other bits are changed. */ 1836 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1837 if (err) 1838 return err; 1839 mlxsw_reg_mfgd_trigger_test_set(mfgd_pl, true); 1840 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1841 } 1842 1843 static const struct devlink_health_reporter_ops 1844 mlxsw_core_health_fw_fatal_ops = { 1845 .name = "fw_fatal", 1846 .dump = mlxsw_core_health_fw_fatal_dump, 1847 .test = mlxsw_core_health_fw_fatal_test, 1848 }; 1849 1850 static int mlxsw_core_health_fw_fatal_config(struct mlxsw_core *mlxsw_core, 1851 bool enable) 1852 { 1853 char mfgd_pl[MLXSW_REG_MFGD_LEN]; 1854 int err; 1855 1856 /* Read the register first to make sure no other bits are changed. */ 1857 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1858 if (err) 1859 return err; 1860 mlxsw_reg_mfgd_fatal_event_mode_set(mfgd_pl, enable); 1861 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1862 } 1863 1864 static int mlxsw_core_health_init(struct mlxsw_core *mlxsw_core) 1865 { 1866 struct devlink *devlink = priv_to_devlink(mlxsw_core); 1867 struct devlink_health_reporter *fw_fatal; 1868 int err; 1869 1870 if (!mlxsw_core->driver->fw_fatal_enabled) 1871 return 0; 1872 1873 fw_fatal = devlink_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops, 1874 0, mlxsw_core); 1875 if (IS_ERR(fw_fatal)) { 1876 dev_err(mlxsw_core->bus_info->dev, "Failed to create fw fatal reporter"); 1877 return PTR_ERR(fw_fatal); 1878 } 1879 mlxsw_core->health.fw_fatal = fw_fatal; 1880 1881 err = mlxsw_core_trap_register(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1882 if (err) 1883 goto err_trap_register; 1884 1885 err = mlxsw_core_health_fw_fatal_config(mlxsw_core, true); 1886 if (err) 1887 goto err_fw_fatal_config; 1888 1889 return 0; 1890 1891 err_fw_fatal_config: 1892 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1893 err_trap_register: 1894 devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); 1895 return err; 1896 } 1897 1898 static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core) 1899 { 1900 if (!mlxsw_core->driver->fw_fatal_enabled) 1901 return; 1902 1903 mlxsw_core_health_fw_fatal_config(mlxsw_core, false); 1904 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1905 /* Make sure there is no more event work scheduled */ 1906 mlxsw_core_flush_owq(); 1907 devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); 1908 } 1909 1910 static int 1911 __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, 1912 const struct mlxsw_bus *mlxsw_bus, 1913 void *bus_priv, bool reload, 1914 struct devlink *devlink, 1915 struct netlink_ext_ack *extack) 1916 { 1917 const char *device_kind = mlxsw_bus_info->device_kind; 1918 struct mlxsw_core *mlxsw_core; 1919 struct mlxsw_driver *mlxsw_driver; 1920 struct mlxsw_res *res; 1921 size_t alloc_size; 1922 int err; 1923 1924 mlxsw_driver = mlxsw_core_driver_get(device_kind); 1925 if (!mlxsw_driver) 1926 return -EINVAL; 1927 1928 if (!reload) { 1929 alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; 1930 devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); 1931 if (!devlink) { 1932 err = -ENOMEM; 1933 goto err_devlink_alloc; 1934 } 1935 } 1936 1937 mlxsw_core = devlink_priv(devlink); 1938 INIT_LIST_HEAD(&mlxsw_core->rx_listener_list); 1939 INIT_LIST_HEAD(&mlxsw_core->event_listener_list); 1940 mlxsw_core->driver = mlxsw_driver; 1941 mlxsw_core->bus = mlxsw_bus; 1942 mlxsw_core->bus_priv = bus_priv; 1943 mlxsw_core->bus_info = mlxsw_bus_info; 1944 1945 res = mlxsw_driver->res_query_enabled ? &mlxsw_core->res : NULL; 1946 err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile, res); 1947 if (err) 1948 goto err_bus_init; 1949 1950 if (mlxsw_driver->resources_register && !reload) { 1951 err = mlxsw_driver->resources_register(mlxsw_core); 1952 if (err) 1953 goto err_register_resources; 1954 } 1955 1956 err = mlxsw_ports_init(mlxsw_core, reload); 1957 if (err) 1958 goto err_ports_init; 1959 1960 if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG) && 1961 MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) { 1962 alloc_size = sizeof(u8) * 1963 MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG) * 1964 MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); 1965 mlxsw_core->lag.mapping = kzalloc(alloc_size, GFP_KERNEL); 1966 if (!mlxsw_core->lag.mapping) { 1967 err = -ENOMEM; 1968 goto err_alloc_lag_mapping; 1969 } 1970 } 1971 1972 err = mlxsw_emad_init(mlxsw_core); 1973 if (err) 1974 goto err_emad_init; 1975 1976 if (!reload) { 1977 err = devlink_register(devlink, mlxsw_bus_info->dev); 1978 if (err) 1979 goto err_devlink_register; 1980 } 1981 1982 if (!reload) { 1983 err = mlxsw_core_params_register(mlxsw_core); 1984 if (err) 1985 goto err_register_params; 1986 } 1987 1988 err = mlxsw_core_fw_rev_validate(mlxsw_core, mlxsw_bus_info, mlxsw_driver->fw_req_rev, 1989 mlxsw_driver->fw_filename); 1990 if (err) 1991 goto err_fw_rev_validate; 1992 1993 err = mlxsw_core_health_init(mlxsw_core); 1994 if (err) 1995 goto err_health_init; 1996 1997 if (mlxsw_driver->init) { 1998 err = mlxsw_driver->init(mlxsw_core, mlxsw_bus_info, extack); 1999 if (err) 2000 goto err_driver_init; 2001 } 2002 2003 err = mlxsw_hwmon_init(mlxsw_core, mlxsw_bus_info, &mlxsw_core->hwmon); 2004 if (err) 2005 goto err_hwmon_init; 2006 2007 err = mlxsw_thermal_init(mlxsw_core, mlxsw_bus_info, 2008 &mlxsw_core->thermal); 2009 if (err) 2010 goto err_thermal_init; 2011 2012 err = mlxsw_env_init(mlxsw_core, &mlxsw_core->env); 2013 if (err) 2014 goto err_env_init; 2015 2016 mlxsw_core->is_initialized = true; 2017 devlink_params_publish(devlink); 2018 2019 if (!reload) 2020 devlink_reload_enable(devlink); 2021 2022 return 0; 2023 2024 err_env_init: 2025 mlxsw_thermal_fini(mlxsw_core->thermal); 2026 err_thermal_init: 2027 mlxsw_hwmon_fini(mlxsw_core->hwmon); 2028 err_hwmon_init: 2029 if (mlxsw_core->driver->fini) 2030 mlxsw_core->driver->fini(mlxsw_core); 2031 err_driver_init: 2032 mlxsw_core_health_fini(mlxsw_core); 2033 err_health_init: 2034 err_fw_rev_validate: 2035 if (!reload) 2036 mlxsw_core_params_unregister(mlxsw_core); 2037 err_register_params: 2038 if (!reload) 2039 devlink_unregister(devlink); 2040 err_devlink_register: 2041 mlxsw_emad_fini(mlxsw_core); 2042 err_emad_init: 2043 kfree(mlxsw_core->lag.mapping); 2044 err_alloc_lag_mapping: 2045 mlxsw_ports_fini(mlxsw_core, reload); 2046 err_ports_init: 2047 if (!reload) 2048 devlink_resources_unregister(devlink, NULL); 2049 err_register_resources: 2050 mlxsw_bus->fini(bus_priv); 2051 err_bus_init: 2052 if (!reload) 2053 devlink_free(devlink); 2054 err_devlink_alloc: 2055 return err; 2056 } 2057 2058 int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, 2059 const struct mlxsw_bus *mlxsw_bus, 2060 void *bus_priv, bool reload, 2061 struct devlink *devlink, 2062 struct netlink_ext_ack *extack) 2063 { 2064 bool called_again = false; 2065 int err; 2066 2067 again: 2068 err = __mlxsw_core_bus_device_register(mlxsw_bus_info, mlxsw_bus, 2069 bus_priv, reload, 2070 devlink, extack); 2071 /* -EAGAIN is returned in case the FW was updated. FW needs 2072 * a reset, so lets try to call __mlxsw_core_bus_device_register() 2073 * again. 2074 */ 2075 if (err == -EAGAIN && !called_again) { 2076 called_again = true; 2077 goto again; 2078 } 2079 2080 return err; 2081 } 2082 EXPORT_SYMBOL(mlxsw_core_bus_device_register); 2083 2084 void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, 2085 bool reload) 2086 { 2087 struct devlink *devlink = priv_to_devlink(mlxsw_core); 2088 2089 if (!reload) 2090 devlink_reload_disable(devlink); 2091 if (devlink_is_reload_failed(devlink)) { 2092 if (!reload) 2093 /* Only the parts that were not de-initialized in the 2094 * failed reload attempt need to be de-initialized. 2095 */ 2096 goto reload_fail_deinit; 2097 else 2098 return; 2099 } 2100 2101 devlink_params_unpublish(devlink); 2102 mlxsw_core->is_initialized = false; 2103 mlxsw_env_fini(mlxsw_core->env); 2104 mlxsw_thermal_fini(mlxsw_core->thermal); 2105 mlxsw_hwmon_fini(mlxsw_core->hwmon); 2106 if (mlxsw_core->driver->fini) 2107 mlxsw_core->driver->fini(mlxsw_core); 2108 mlxsw_core_health_fini(mlxsw_core); 2109 if (!reload) 2110 mlxsw_core_params_unregister(mlxsw_core); 2111 if (!reload) 2112 devlink_unregister(devlink); 2113 mlxsw_emad_fini(mlxsw_core); 2114 kfree(mlxsw_core->lag.mapping); 2115 mlxsw_ports_fini(mlxsw_core, reload); 2116 if (!reload) 2117 devlink_resources_unregister(devlink, NULL); 2118 mlxsw_core->bus->fini(mlxsw_core->bus_priv); 2119 if (!reload) 2120 devlink_free(devlink); 2121 2122 return; 2123 2124 reload_fail_deinit: 2125 mlxsw_core_params_unregister(mlxsw_core); 2126 devlink_unregister(devlink); 2127 devlink_resources_unregister(devlink, NULL); 2128 devlink_free(devlink); 2129 } 2130 EXPORT_SYMBOL(mlxsw_core_bus_device_unregister); 2131 2132 bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core, 2133 const struct mlxsw_tx_info *tx_info) 2134 { 2135 return mlxsw_core->bus->skb_transmit_busy(mlxsw_core->bus_priv, 2136 tx_info); 2137 } 2138 EXPORT_SYMBOL(mlxsw_core_skb_transmit_busy); 2139 2140 int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, 2141 const struct mlxsw_tx_info *tx_info) 2142 { 2143 return mlxsw_core->bus->skb_transmit(mlxsw_core->bus_priv, skb, 2144 tx_info); 2145 } 2146 EXPORT_SYMBOL(mlxsw_core_skb_transmit); 2147 2148 void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core, 2149 struct sk_buff *skb, u8 local_port) 2150 { 2151 if (mlxsw_core->driver->ptp_transmitted) 2152 mlxsw_core->driver->ptp_transmitted(mlxsw_core, skb, 2153 local_port); 2154 } 2155 EXPORT_SYMBOL(mlxsw_core_ptp_transmitted); 2156 2157 static bool __is_rx_listener_equal(const struct mlxsw_rx_listener *rxl_a, 2158 const struct mlxsw_rx_listener *rxl_b) 2159 { 2160 return (rxl_a->func == rxl_b->func && 2161 rxl_a->local_port == rxl_b->local_port && 2162 rxl_a->trap_id == rxl_b->trap_id && 2163 rxl_a->mirror_reason == rxl_b->mirror_reason); 2164 } 2165 2166 static struct mlxsw_rx_listener_item * 2167 __find_rx_listener_item(struct mlxsw_core *mlxsw_core, 2168 const struct mlxsw_rx_listener *rxl) 2169 { 2170 struct mlxsw_rx_listener_item *rxl_item; 2171 2172 list_for_each_entry(rxl_item, &mlxsw_core->rx_listener_list, list) { 2173 if (__is_rx_listener_equal(&rxl_item->rxl, rxl)) 2174 return rxl_item; 2175 } 2176 return NULL; 2177 } 2178 2179 int mlxsw_core_rx_listener_register(struct mlxsw_core *mlxsw_core, 2180 const struct mlxsw_rx_listener *rxl, 2181 void *priv, bool enabled) 2182 { 2183 struct mlxsw_rx_listener_item *rxl_item; 2184 2185 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2186 if (rxl_item) 2187 return -EEXIST; 2188 rxl_item = kmalloc(sizeof(*rxl_item), GFP_KERNEL); 2189 if (!rxl_item) 2190 return -ENOMEM; 2191 rxl_item->rxl = *rxl; 2192 rxl_item->priv = priv; 2193 rxl_item->enabled = enabled; 2194 2195 list_add_rcu(&rxl_item->list, &mlxsw_core->rx_listener_list); 2196 return 0; 2197 } 2198 EXPORT_SYMBOL(mlxsw_core_rx_listener_register); 2199 2200 void mlxsw_core_rx_listener_unregister(struct mlxsw_core *mlxsw_core, 2201 const struct mlxsw_rx_listener *rxl) 2202 { 2203 struct mlxsw_rx_listener_item *rxl_item; 2204 2205 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2206 if (!rxl_item) 2207 return; 2208 list_del_rcu(&rxl_item->list); 2209 synchronize_rcu(); 2210 kfree(rxl_item); 2211 } 2212 EXPORT_SYMBOL(mlxsw_core_rx_listener_unregister); 2213 2214 static void 2215 mlxsw_core_rx_listener_state_set(struct mlxsw_core *mlxsw_core, 2216 const struct mlxsw_rx_listener *rxl, 2217 bool enabled) 2218 { 2219 struct mlxsw_rx_listener_item *rxl_item; 2220 2221 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2222 if (WARN_ON(!rxl_item)) 2223 return; 2224 rxl_item->enabled = enabled; 2225 } 2226 2227 static void mlxsw_core_event_listener_func(struct sk_buff *skb, u8 local_port, 2228 void *priv) 2229 { 2230 struct mlxsw_event_listener_item *event_listener_item = priv; 2231 struct mlxsw_core *mlxsw_core; 2232 struct mlxsw_reg_info reg; 2233 char *payload; 2234 char *reg_tlv; 2235 char *op_tlv; 2236 2237 mlxsw_core = event_listener_item->mlxsw_core; 2238 trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), true, 0, 2239 skb->data, skb->len); 2240 2241 mlxsw_emad_tlv_parse(skb); 2242 op_tlv = mlxsw_emad_op_tlv(skb); 2243 reg_tlv = mlxsw_emad_reg_tlv(skb); 2244 2245 reg.id = mlxsw_emad_op_tlv_register_id_get(op_tlv); 2246 reg.len = (mlxsw_emad_reg_tlv_len_get(reg_tlv) - 1) * sizeof(u32); 2247 payload = mlxsw_emad_reg_payload(reg_tlv); 2248 event_listener_item->el.func(®, payload, event_listener_item->priv); 2249 dev_kfree_skb(skb); 2250 } 2251 2252 static bool __is_event_listener_equal(const struct mlxsw_event_listener *el_a, 2253 const struct mlxsw_event_listener *el_b) 2254 { 2255 return (el_a->func == el_b->func && 2256 el_a->trap_id == el_b->trap_id); 2257 } 2258 2259 static struct mlxsw_event_listener_item * 2260 __find_event_listener_item(struct mlxsw_core *mlxsw_core, 2261 const struct mlxsw_event_listener *el) 2262 { 2263 struct mlxsw_event_listener_item *el_item; 2264 2265 list_for_each_entry(el_item, &mlxsw_core->event_listener_list, list) { 2266 if (__is_event_listener_equal(&el_item->el, el)) 2267 return el_item; 2268 } 2269 return NULL; 2270 } 2271 2272 int mlxsw_core_event_listener_register(struct mlxsw_core *mlxsw_core, 2273 const struct mlxsw_event_listener *el, 2274 void *priv) 2275 { 2276 int err; 2277 struct mlxsw_event_listener_item *el_item; 2278 const struct mlxsw_rx_listener rxl = { 2279 .func = mlxsw_core_event_listener_func, 2280 .local_port = MLXSW_PORT_DONT_CARE, 2281 .trap_id = el->trap_id, 2282 }; 2283 2284 el_item = __find_event_listener_item(mlxsw_core, el); 2285 if (el_item) 2286 return -EEXIST; 2287 el_item = kmalloc(sizeof(*el_item), GFP_KERNEL); 2288 if (!el_item) 2289 return -ENOMEM; 2290 el_item->mlxsw_core = mlxsw_core; 2291 el_item->el = *el; 2292 el_item->priv = priv; 2293 2294 err = mlxsw_core_rx_listener_register(mlxsw_core, &rxl, el_item, true); 2295 if (err) 2296 goto err_rx_listener_register; 2297 2298 /* No reason to save item if we did not manage to register an RX 2299 * listener for it. 2300 */ 2301 list_add_rcu(&el_item->list, &mlxsw_core->event_listener_list); 2302 2303 return 0; 2304 2305 err_rx_listener_register: 2306 kfree(el_item); 2307 return err; 2308 } 2309 EXPORT_SYMBOL(mlxsw_core_event_listener_register); 2310 2311 void mlxsw_core_event_listener_unregister(struct mlxsw_core *mlxsw_core, 2312 const struct mlxsw_event_listener *el) 2313 { 2314 struct mlxsw_event_listener_item *el_item; 2315 const struct mlxsw_rx_listener rxl = { 2316 .func = mlxsw_core_event_listener_func, 2317 .local_port = MLXSW_PORT_DONT_CARE, 2318 .trap_id = el->trap_id, 2319 }; 2320 2321 el_item = __find_event_listener_item(mlxsw_core, el); 2322 if (!el_item) 2323 return; 2324 mlxsw_core_rx_listener_unregister(mlxsw_core, &rxl); 2325 list_del(&el_item->list); 2326 kfree(el_item); 2327 } 2328 EXPORT_SYMBOL(mlxsw_core_event_listener_unregister); 2329 2330 static int mlxsw_core_listener_register(struct mlxsw_core *mlxsw_core, 2331 const struct mlxsw_listener *listener, 2332 void *priv, bool enabled) 2333 { 2334 if (listener->is_event) { 2335 WARN_ON(!enabled); 2336 return mlxsw_core_event_listener_register(mlxsw_core, 2337 &listener->event_listener, 2338 priv); 2339 } else { 2340 return mlxsw_core_rx_listener_register(mlxsw_core, 2341 &listener->rx_listener, 2342 priv, enabled); 2343 } 2344 } 2345 2346 static void mlxsw_core_listener_unregister(struct mlxsw_core *mlxsw_core, 2347 const struct mlxsw_listener *listener, 2348 void *priv) 2349 { 2350 if (listener->is_event) 2351 mlxsw_core_event_listener_unregister(mlxsw_core, 2352 &listener->event_listener); 2353 else 2354 mlxsw_core_rx_listener_unregister(mlxsw_core, 2355 &listener->rx_listener); 2356 } 2357 2358 int mlxsw_core_trap_register(struct mlxsw_core *mlxsw_core, 2359 const struct mlxsw_listener *listener, void *priv) 2360 { 2361 enum mlxsw_reg_htgt_trap_group trap_group; 2362 enum mlxsw_reg_hpkt_action action; 2363 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2364 int err; 2365 2366 err = mlxsw_core_listener_register(mlxsw_core, listener, priv, 2367 listener->enabled_on_register); 2368 if (err) 2369 return err; 2370 2371 action = listener->enabled_on_register ? listener->en_action : 2372 listener->dis_action; 2373 trap_group = listener->enabled_on_register ? listener->en_trap_group : 2374 listener->dis_trap_group; 2375 mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, 2376 trap_group, listener->is_ctrl); 2377 err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2378 if (err) 2379 goto err_trap_set; 2380 2381 return 0; 2382 2383 err_trap_set: 2384 mlxsw_core_listener_unregister(mlxsw_core, listener, priv); 2385 return err; 2386 } 2387 EXPORT_SYMBOL(mlxsw_core_trap_register); 2388 2389 void mlxsw_core_trap_unregister(struct mlxsw_core *mlxsw_core, 2390 const struct mlxsw_listener *listener, 2391 void *priv) 2392 { 2393 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2394 2395 if (!listener->is_event) { 2396 mlxsw_reg_hpkt_pack(hpkt_pl, listener->dis_action, 2397 listener->trap_id, listener->dis_trap_group, 2398 listener->is_ctrl); 2399 mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2400 } 2401 2402 mlxsw_core_listener_unregister(mlxsw_core, listener, priv); 2403 } 2404 EXPORT_SYMBOL(mlxsw_core_trap_unregister); 2405 2406 int mlxsw_core_trap_state_set(struct mlxsw_core *mlxsw_core, 2407 const struct mlxsw_listener *listener, 2408 bool enabled) 2409 { 2410 enum mlxsw_reg_htgt_trap_group trap_group; 2411 enum mlxsw_reg_hpkt_action action; 2412 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2413 int err; 2414 2415 /* Not supported for event listener */ 2416 if (WARN_ON(listener->is_event)) 2417 return -EINVAL; 2418 2419 action = enabled ? listener->en_action : listener->dis_action; 2420 trap_group = enabled ? listener->en_trap_group : 2421 listener->dis_trap_group; 2422 mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, 2423 trap_group, listener->is_ctrl); 2424 err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2425 if (err) 2426 return err; 2427 2428 mlxsw_core_rx_listener_state_set(mlxsw_core, &listener->rx_listener, 2429 enabled); 2430 return 0; 2431 } 2432 EXPORT_SYMBOL(mlxsw_core_trap_state_set); 2433 2434 static u64 mlxsw_core_tid_get(struct mlxsw_core *mlxsw_core) 2435 { 2436 return atomic64_inc_return(&mlxsw_core->emad.tid); 2437 } 2438 2439 static int mlxsw_core_reg_access_emad(struct mlxsw_core *mlxsw_core, 2440 const struct mlxsw_reg_info *reg, 2441 char *payload, 2442 enum mlxsw_core_reg_access_type type, 2443 struct list_head *bulk_list, 2444 mlxsw_reg_trans_cb_t *cb, 2445 unsigned long cb_priv) 2446 { 2447 u64 tid = mlxsw_core_tid_get(mlxsw_core); 2448 struct mlxsw_reg_trans *trans; 2449 int err; 2450 2451 trans = kzalloc(sizeof(*trans), GFP_KERNEL); 2452 if (!trans) 2453 return -ENOMEM; 2454 2455 err = mlxsw_emad_reg_access(mlxsw_core, reg, payload, type, trans, 2456 bulk_list, cb, cb_priv, tid); 2457 if (err) { 2458 kfree_rcu(trans, rcu); 2459 return err; 2460 } 2461 return 0; 2462 } 2463 2464 int mlxsw_reg_trans_query(struct mlxsw_core *mlxsw_core, 2465 const struct mlxsw_reg_info *reg, char *payload, 2466 struct list_head *bulk_list, 2467 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) 2468 { 2469 return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, 2470 MLXSW_CORE_REG_ACCESS_TYPE_QUERY, 2471 bulk_list, cb, cb_priv); 2472 } 2473 EXPORT_SYMBOL(mlxsw_reg_trans_query); 2474 2475 int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core, 2476 const struct mlxsw_reg_info *reg, char *payload, 2477 struct list_head *bulk_list, 2478 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) 2479 { 2480 return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, 2481 MLXSW_CORE_REG_ACCESS_TYPE_WRITE, 2482 bulk_list, cb, cb_priv); 2483 } 2484 EXPORT_SYMBOL(mlxsw_reg_trans_write); 2485 2486 #define MLXSW_REG_TRANS_ERR_STRING_SIZE 256 2487 2488 static int mlxsw_reg_trans_wait(struct mlxsw_reg_trans *trans) 2489 { 2490 char err_string[MLXSW_REG_TRANS_ERR_STRING_SIZE]; 2491 struct mlxsw_core *mlxsw_core = trans->core; 2492 int err; 2493 2494 wait_for_completion(&trans->completion); 2495 cancel_delayed_work_sync(&trans->timeout_dw); 2496 err = trans->err; 2497 2498 if (trans->retries) 2499 dev_warn(mlxsw_core->bus_info->dev, "EMAD retries (%d/%d) (tid=%llx)\n", 2500 trans->retries, MLXSW_EMAD_MAX_RETRY, trans->tid); 2501 if (err) { 2502 dev_err(mlxsw_core->bus_info->dev, "EMAD reg access failed (tid=%llx,reg_id=%x(%s),type=%s,status=%x(%s))\n", 2503 trans->tid, trans->reg->id, 2504 mlxsw_reg_id_str(trans->reg->id), 2505 mlxsw_core_reg_access_type_str(trans->type), 2506 trans->emad_status, 2507 mlxsw_emad_op_tlv_status_str(trans->emad_status)); 2508 2509 snprintf(err_string, MLXSW_REG_TRANS_ERR_STRING_SIZE, 2510 "(tid=%llx,reg_id=%x(%s)) %s (%s)\n", trans->tid, 2511 trans->reg->id, mlxsw_reg_id_str(trans->reg->id), 2512 mlxsw_emad_op_tlv_status_str(trans->emad_status), 2513 trans->emad_err_string ? trans->emad_err_string : ""); 2514 2515 trace_devlink_hwerr(priv_to_devlink(mlxsw_core), 2516 trans->emad_status, err_string); 2517 2518 kfree(trans->emad_err_string); 2519 } 2520 2521 list_del(&trans->bulk_list); 2522 kfree_rcu(trans, rcu); 2523 return err; 2524 } 2525 2526 int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list) 2527 { 2528 struct mlxsw_reg_trans *trans; 2529 struct mlxsw_reg_trans *tmp; 2530 int sum_err = 0; 2531 int err; 2532 2533 list_for_each_entry_safe(trans, tmp, bulk_list, bulk_list) { 2534 err = mlxsw_reg_trans_wait(trans); 2535 if (err && sum_err == 0) 2536 sum_err = err; /* first error to be returned */ 2537 } 2538 return sum_err; 2539 } 2540 EXPORT_SYMBOL(mlxsw_reg_trans_bulk_wait); 2541 2542 static int mlxsw_core_reg_access_cmd(struct mlxsw_core *mlxsw_core, 2543 const struct mlxsw_reg_info *reg, 2544 char *payload, 2545 enum mlxsw_core_reg_access_type type) 2546 { 2547 enum mlxsw_emad_op_tlv_status status; 2548 int err, n_retry; 2549 bool reset_ok; 2550 char *in_mbox, *out_mbox, *tmp; 2551 2552 dev_dbg(mlxsw_core->bus_info->dev, "Reg cmd access (reg_id=%x(%s),type=%s)\n", 2553 reg->id, mlxsw_reg_id_str(reg->id), 2554 mlxsw_core_reg_access_type_str(type)); 2555 2556 in_mbox = mlxsw_cmd_mbox_alloc(); 2557 if (!in_mbox) 2558 return -ENOMEM; 2559 2560 out_mbox = mlxsw_cmd_mbox_alloc(); 2561 if (!out_mbox) { 2562 err = -ENOMEM; 2563 goto free_in_mbox; 2564 } 2565 2566 mlxsw_emad_pack_op_tlv(in_mbox, reg, type, 2567 mlxsw_core_tid_get(mlxsw_core)); 2568 tmp = in_mbox + MLXSW_EMAD_OP_TLV_LEN * sizeof(u32); 2569 mlxsw_emad_pack_reg_tlv(tmp, reg, payload); 2570 2571 /* There is a special treatment needed for MRSR (reset) register. 2572 * The command interface will return error after the command 2573 * is executed, so tell the lower layer to expect it 2574 * and cope accordingly. 2575 */ 2576 reset_ok = reg->id == MLXSW_REG_MRSR_ID; 2577 2578 n_retry = 0; 2579 retry: 2580 err = mlxsw_cmd_access_reg(mlxsw_core, reset_ok, in_mbox, out_mbox); 2581 if (!err) { 2582 err = mlxsw_emad_process_status(out_mbox, &status); 2583 if (err) { 2584 if (err == -EAGAIN && n_retry++ < MLXSW_EMAD_MAX_RETRY) 2585 goto retry; 2586 dev_err(mlxsw_core->bus_info->dev, "Reg cmd access status failed (status=%x(%s))\n", 2587 status, mlxsw_emad_op_tlv_status_str(status)); 2588 } 2589 } 2590 2591 if (!err) 2592 memcpy(payload, mlxsw_emad_reg_payload_cmd(out_mbox), 2593 reg->len); 2594 2595 mlxsw_cmd_mbox_free(out_mbox); 2596 free_in_mbox: 2597 mlxsw_cmd_mbox_free(in_mbox); 2598 if (err) 2599 dev_err(mlxsw_core->bus_info->dev, "Reg cmd access failed (reg_id=%x(%s),type=%s)\n", 2600 reg->id, mlxsw_reg_id_str(reg->id), 2601 mlxsw_core_reg_access_type_str(type)); 2602 return err; 2603 } 2604 2605 static void mlxsw_core_reg_access_cb(struct mlxsw_core *mlxsw_core, 2606 char *payload, size_t payload_len, 2607 unsigned long cb_priv) 2608 { 2609 char *orig_payload = (char *) cb_priv; 2610 2611 memcpy(orig_payload, payload, payload_len); 2612 } 2613 2614 static int mlxsw_core_reg_access(struct mlxsw_core *mlxsw_core, 2615 const struct mlxsw_reg_info *reg, 2616 char *payload, 2617 enum mlxsw_core_reg_access_type type) 2618 { 2619 LIST_HEAD(bulk_list); 2620 int err; 2621 2622 /* During initialization EMAD interface is not available to us, 2623 * so we default to command interface. We switch to EMAD interface 2624 * after setting the appropriate traps. 2625 */ 2626 if (!mlxsw_core->emad.use_emad) 2627 return mlxsw_core_reg_access_cmd(mlxsw_core, reg, 2628 payload, type); 2629 2630 err = mlxsw_core_reg_access_emad(mlxsw_core, reg, 2631 payload, type, &bulk_list, 2632 mlxsw_core_reg_access_cb, 2633 (unsigned long) payload); 2634 if (err) 2635 return err; 2636 return mlxsw_reg_trans_bulk_wait(&bulk_list); 2637 } 2638 2639 int mlxsw_reg_query(struct mlxsw_core *mlxsw_core, 2640 const struct mlxsw_reg_info *reg, char *payload) 2641 { 2642 return mlxsw_core_reg_access(mlxsw_core, reg, payload, 2643 MLXSW_CORE_REG_ACCESS_TYPE_QUERY); 2644 } 2645 EXPORT_SYMBOL(mlxsw_reg_query); 2646 2647 int mlxsw_reg_write(struct mlxsw_core *mlxsw_core, 2648 const struct mlxsw_reg_info *reg, char *payload) 2649 { 2650 return mlxsw_core_reg_access(mlxsw_core, reg, payload, 2651 MLXSW_CORE_REG_ACCESS_TYPE_WRITE); 2652 } 2653 EXPORT_SYMBOL(mlxsw_reg_write); 2654 2655 void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, 2656 struct mlxsw_rx_info *rx_info) 2657 { 2658 struct mlxsw_rx_listener_item *rxl_item; 2659 const struct mlxsw_rx_listener *rxl; 2660 u8 local_port; 2661 bool found = false; 2662 2663 if (rx_info->is_lag) { 2664 dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: lag_id = %d, lag_port_index = 0x%x\n", 2665 __func__, rx_info->u.lag_id, 2666 rx_info->trap_id); 2667 /* Upper layer does not care if the skb came from LAG or not, 2668 * so just get the local_port for the lag port and push it up. 2669 */ 2670 local_port = mlxsw_core_lag_mapping_get(mlxsw_core, 2671 rx_info->u.lag_id, 2672 rx_info->lag_port_index); 2673 } else { 2674 local_port = rx_info->u.sys_port; 2675 } 2676 2677 dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: local_port = %d, trap_id = 0x%x\n", 2678 __func__, local_port, rx_info->trap_id); 2679 2680 if ((rx_info->trap_id >= MLXSW_TRAP_ID_MAX) || 2681 (local_port >= mlxsw_core->max_ports)) 2682 goto drop; 2683 2684 rcu_read_lock(); 2685 list_for_each_entry_rcu(rxl_item, &mlxsw_core->rx_listener_list, list) { 2686 rxl = &rxl_item->rxl; 2687 if ((rxl->local_port == MLXSW_PORT_DONT_CARE || 2688 rxl->local_port == local_port) && 2689 rxl->trap_id == rx_info->trap_id && 2690 rxl->mirror_reason == rx_info->mirror_reason) { 2691 if (rxl_item->enabled) 2692 found = true; 2693 break; 2694 } 2695 } 2696 if (!found) { 2697 rcu_read_unlock(); 2698 goto drop; 2699 } 2700 2701 rxl->func(skb, local_port, rxl_item->priv); 2702 rcu_read_unlock(); 2703 return; 2704 2705 drop: 2706 dev_kfree_skb(skb); 2707 } 2708 EXPORT_SYMBOL(mlxsw_core_skb_receive); 2709 2710 static int mlxsw_core_lag_mapping_index(struct mlxsw_core *mlxsw_core, 2711 u16 lag_id, u8 port_index) 2712 { 2713 return MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS) * lag_id + 2714 port_index; 2715 } 2716 2717 void mlxsw_core_lag_mapping_set(struct mlxsw_core *mlxsw_core, 2718 u16 lag_id, u8 port_index, u8 local_port) 2719 { 2720 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2721 lag_id, port_index); 2722 2723 mlxsw_core->lag.mapping[index] = local_port; 2724 } 2725 EXPORT_SYMBOL(mlxsw_core_lag_mapping_set); 2726 2727 u8 mlxsw_core_lag_mapping_get(struct mlxsw_core *mlxsw_core, 2728 u16 lag_id, u8 port_index) 2729 { 2730 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2731 lag_id, port_index); 2732 2733 return mlxsw_core->lag.mapping[index]; 2734 } 2735 EXPORT_SYMBOL(mlxsw_core_lag_mapping_get); 2736 2737 void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core, 2738 u16 lag_id, u8 local_port) 2739 { 2740 int i; 2741 2742 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); i++) { 2743 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2744 lag_id, i); 2745 2746 if (mlxsw_core->lag.mapping[index] == local_port) 2747 mlxsw_core->lag.mapping[index] = 0; 2748 } 2749 } 2750 EXPORT_SYMBOL(mlxsw_core_lag_mapping_clear); 2751 2752 bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, 2753 enum mlxsw_res_id res_id) 2754 { 2755 return mlxsw_res_valid(&mlxsw_core->res, res_id); 2756 } 2757 EXPORT_SYMBOL(mlxsw_core_res_valid); 2758 2759 u64 mlxsw_core_res_get(struct mlxsw_core *mlxsw_core, 2760 enum mlxsw_res_id res_id) 2761 { 2762 return mlxsw_res_get(&mlxsw_core->res, res_id); 2763 } 2764 EXPORT_SYMBOL(mlxsw_core_res_get); 2765 2766 static int __mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, 2767 enum devlink_port_flavour flavour, 2768 u32 port_number, bool split, 2769 u32 split_port_subnumber, 2770 bool splittable, u32 lanes, 2771 const unsigned char *switch_id, 2772 unsigned char switch_id_len) 2773 { 2774 struct devlink *devlink = priv_to_devlink(mlxsw_core); 2775 struct mlxsw_core_port *mlxsw_core_port = 2776 &mlxsw_core->ports[local_port]; 2777 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2778 struct devlink_port_attrs attrs = {}; 2779 int err; 2780 2781 attrs.split = split; 2782 attrs.lanes = lanes; 2783 attrs.splittable = splittable; 2784 attrs.flavour = flavour; 2785 attrs.phys.port_number = port_number; 2786 attrs.phys.split_subport_number = split_port_subnumber; 2787 memcpy(attrs.switch_id.id, switch_id, switch_id_len); 2788 attrs.switch_id.id_len = switch_id_len; 2789 mlxsw_core_port->local_port = local_port; 2790 devlink_port_attrs_set(devlink_port, &attrs); 2791 err = devlink_port_register(devlink, devlink_port, local_port); 2792 if (err) 2793 memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); 2794 return err; 2795 } 2796 2797 static void __mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) 2798 { 2799 struct mlxsw_core_port *mlxsw_core_port = 2800 &mlxsw_core->ports[local_port]; 2801 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2802 2803 devlink_port_unregister(devlink_port); 2804 memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); 2805 } 2806 2807 int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, 2808 u32 port_number, bool split, 2809 u32 split_port_subnumber, 2810 bool splittable, u32 lanes, 2811 const unsigned char *switch_id, 2812 unsigned char switch_id_len) 2813 { 2814 int err; 2815 2816 err = __mlxsw_core_port_init(mlxsw_core, local_port, 2817 DEVLINK_PORT_FLAVOUR_PHYSICAL, 2818 port_number, split, split_port_subnumber, 2819 splittable, lanes, 2820 switch_id, switch_id_len); 2821 if (err) 2822 return err; 2823 2824 atomic_inc(&mlxsw_core->active_ports_count); 2825 return 0; 2826 } 2827 EXPORT_SYMBOL(mlxsw_core_port_init); 2828 2829 void mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) 2830 { 2831 atomic_dec(&mlxsw_core->active_ports_count); 2832 2833 __mlxsw_core_port_fini(mlxsw_core, local_port); 2834 } 2835 EXPORT_SYMBOL(mlxsw_core_port_fini); 2836 2837 int mlxsw_core_cpu_port_init(struct mlxsw_core *mlxsw_core, 2838 void *port_driver_priv, 2839 const unsigned char *switch_id, 2840 unsigned char switch_id_len) 2841 { 2842 struct mlxsw_core_port *mlxsw_core_port = 2843 &mlxsw_core->ports[MLXSW_PORT_CPU_PORT]; 2844 int err; 2845 2846 err = __mlxsw_core_port_init(mlxsw_core, MLXSW_PORT_CPU_PORT, 2847 DEVLINK_PORT_FLAVOUR_CPU, 2848 0, false, 0, false, 0, 2849 switch_id, switch_id_len); 2850 if (err) 2851 return err; 2852 2853 mlxsw_core_port->port_driver_priv = port_driver_priv; 2854 return 0; 2855 } 2856 EXPORT_SYMBOL(mlxsw_core_cpu_port_init); 2857 2858 void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core) 2859 { 2860 __mlxsw_core_port_fini(mlxsw_core, MLXSW_PORT_CPU_PORT); 2861 } 2862 EXPORT_SYMBOL(mlxsw_core_cpu_port_fini); 2863 2864 void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u8 local_port, 2865 void *port_driver_priv, struct net_device *dev) 2866 { 2867 struct mlxsw_core_port *mlxsw_core_port = 2868 &mlxsw_core->ports[local_port]; 2869 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2870 2871 mlxsw_core_port->port_driver_priv = port_driver_priv; 2872 devlink_port_type_eth_set(devlink_port, dev); 2873 } 2874 EXPORT_SYMBOL(mlxsw_core_port_eth_set); 2875 2876 void mlxsw_core_port_ib_set(struct mlxsw_core *mlxsw_core, u8 local_port, 2877 void *port_driver_priv) 2878 { 2879 struct mlxsw_core_port *mlxsw_core_port = 2880 &mlxsw_core->ports[local_port]; 2881 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2882 2883 mlxsw_core_port->port_driver_priv = port_driver_priv; 2884 devlink_port_type_ib_set(devlink_port, NULL); 2885 } 2886 EXPORT_SYMBOL(mlxsw_core_port_ib_set); 2887 2888 void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u8 local_port, 2889 void *port_driver_priv) 2890 { 2891 struct mlxsw_core_port *mlxsw_core_port = 2892 &mlxsw_core->ports[local_port]; 2893 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2894 2895 mlxsw_core_port->port_driver_priv = port_driver_priv; 2896 devlink_port_type_clear(devlink_port); 2897 } 2898 EXPORT_SYMBOL(mlxsw_core_port_clear); 2899 2900 enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core, 2901 u8 local_port) 2902 { 2903 struct mlxsw_core_port *mlxsw_core_port = 2904 &mlxsw_core->ports[local_port]; 2905 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2906 2907 return devlink_port->type; 2908 } 2909 EXPORT_SYMBOL(mlxsw_core_port_type_get); 2910 2911 2912 struct devlink_port * 2913 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core, 2914 u8 local_port) 2915 { 2916 struct mlxsw_core_port *mlxsw_core_port = 2917 &mlxsw_core->ports[local_port]; 2918 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2919 2920 return devlink_port; 2921 } 2922 EXPORT_SYMBOL(mlxsw_core_port_devlink_port_get); 2923 2924 bool mlxsw_core_port_is_xm(const struct mlxsw_core *mlxsw_core, u8 local_port) 2925 { 2926 const struct mlxsw_bus_info *bus_info = mlxsw_core->bus_info; 2927 int i; 2928 2929 for (i = 0; i < bus_info->xm_local_ports_count; i++) 2930 if (bus_info->xm_local_ports[i] == local_port) 2931 return true; 2932 return false; 2933 } 2934 EXPORT_SYMBOL(mlxsw_core_port_is_xm); 2935 2936 struct mlxsw_env *mlxsw_core_env(const struct mlxsw_core *mlxsw_core) 2937 { 2938 return mlxsw_core->env; 2939 } 2940 2941 bool mlxsw_core_is_initialized(const struct mlxsw_core *mlxsw_core) 2942 { 2943 return mlxsw_core->is_initialized; 2944 } 2945 2946 int mlxsw_core_module_max_width(struct mlxsw_core *mlxsw_core, u8 module) 2947 { 2948 enum mlxsw_reg_pmtm_module_type module_type; 2949 char pmtm_pl[MLXSW_REG_PMTM_LEN]; 2950 int err; 2951 2952 mlxsw_reg_pmtm_pack(pmtm_pl, module); 2953 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(pmtm), pmtm_pl); 2954 if (err) 2955 return err; 2956 mlxsw_reg_pmtm_unpack(pmtm_pl, &module_type); 2957 2958 /* Here we need to get the module width according to the module type. */ 2959 2960 switch (module_type) { 2961 case MLXSW_REG_PMTM_MODULE_TYPE_C2C8X: 2962 case MLXSW_REG_PMTM_MODULE_TYPE_QSFP_DD: 2963 case MLXSW_REG_PMTM_MODULE_TYPE_OSFP: 2964 return 8; 2965 case MLXSW_REG_PMTM_MODULE_TYPE_C2C4X: 2966 case MLXSW_REG_PMTM_MODULE_TYPE_BP_4X: 2967 case MLXSW_REG_PMTM_MODULE_TYPE_QSFP: 2968 return 4; 2969 case MLXSW_REG_PMTM_MODULE_TYPE_C2C2X: 2970 case MLXSW_REG_PMTM_MODULE_TYPE_BP_2X: 2971 case MLXSW_REG_PMTM_MODULE_TYPE_SFP_DD: 2972 case MLXSW_REG_PMTM_MODULE_TYPE_DSFP: 2973 return 2; 2974 case MLXSW_REG_PMTM_MODULE_TYPE_C2C1X: 2975 case MLXSW_REG_PMTM_MODULE_TYPE_BP_1X: 2976 case MLXSW_REG_PMTM_MODULE_TYPE_SFP: 2977 return 1; 2978 default: 2979 return -EINVAL; 2980 } 2981 } 2982 EXPORT_SYMBOL(mlxsw_core_module_max_width); 2983 2984 static void mlxsw_core_buf_dump_dbg(struct mlxsw_core *mlxsw_core, 2985 const char *buf, size_t size) 2986 { 2987 __be32 *m = (__be32 *) buf; 2988 int i; 2989 int count = size / sizeof(__be32); 2990 2991 for (i = count - 1; i >= 0; i--) 2992 if (m[i]) 2993 break; 2994 i++; 2995 count = i ? i : 1; 2996 for (i = 0; i < count; i += 4) 2997 dev_dbg(mlxsw_core->bus_info->dev, "%04x - %08x %08x %08x %08x\n", 2998 i * 4, be32_to_cpu(m[i]), be32_to_cpu(m[i + 1]), 2999 be32_to_cpu(m[i + 2]), be32_to_cpu(m[i + 3])); 3000 } 3001 3002 int mlxsw_cmd_exec(struct mlxsw_core *mlxsw_core, u16 opcode, u8 opcode_mod, 3003 u32 in_mod, bool out_mbox_direct, bool reset_ok, 3004 char *in_mbox, size_t in_mbox_size, 3005 char *out_mbox, size_t out_mbox_size) 3006 { 3007 u8 status; 3008 int err; 3009 3010 BUG_ON(in_mbox_size % sizeof(u32) || out_mbox_size % sizeof(u32)); 3011 if (!mlxsw_core->bus->cmd_exec) 3012 return -EOPNOTSUPP; 3013 3014 dev_dbg(mlxsw_core->bus_info->dev, "Cmd exec (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", 3015 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, in_mod); 3016 if (in_mbox) { 3017 dev_dbg(mlxsw_core->bus_info->dev, "Input mailbox:\n"); 3018 mlxsw_core_buf_dump_dbg(mlxsw_core, in_mbox, in_mbox_size); 3019 } 3020 3021 err = mlxsw_core->bus->cmd_exec(mlxsw_core->bus_priv, opcode, 3022 opcode_mod, in_mod, out_mbox_direct, 3023 in_mbox, in_mbox_size, 3024 out_mbox, out_mbox_size, &status); 3025 3026 if (!err && out_mbox) { 3027 dev_dbg(mlxsw_core->bus_info->dev, "Output mailbox:\n"); 3028 mlxsw_core_buf_dump_dbg(mlxsw_core, out_mbox, out_mbox_size); 3029 } 3030 3031 if (reset_ok && err == -EIO && 3032 status == MLXSW_CMD_STATUS_RUNNING_RESET) { 3033 err = 0; 3034 } else if (err == -EIO && status != MLXSW_CMD_STATUS_OK) { 3035 dev_err(mlxsw_core->bus_info->dev, "Cmd exec failed (opcode=%x(%s),opcode_mod=%x,in_mod=%x,status=%x(%s))\n", 3036 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, 3037 in_mod, status, mlxsw_cmd_status_str(status)); 3038 } else if (err == -ETIMEDOUT) { 3039 dev_err(mlxsw_core->bus_info->dev, "Cmd exec timed-out (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", 3040 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, 3041 in_mod); 3042 } 3043 3044 return err; 3045 } 3046 EXPORT_SYMBOL(mlxsw_cmd_exec); 3047 3048 int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay) 3049 { 3050 return queue_delayed_work(mlxsw_wq, dwork, delay); 3051 } 3052 EXPORT_SYMBOL(mlxsw_core_schedule_dw); 3053 3054 bool mlxsw_core_schedule_work(struct work_struct *work) 3055 { 3056 return queue_work(mlxsw_owq, work); 3057 } 3058 EXPORT_SYMBOL(mlxsw_core_schedule_work); 3059 3060 void mlxsw_core_flush_owq(void) 3061 { 3062 flush_workqueue(mlxsw_owq); 3063 } 3064 EXPORT_SYMBOL(mlxsw_core_flush_owq); 3065 3066 int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, 3067 const struct mlxsw_config_profile *profile, 3068 u64 *p_single_size, u64 *p_double_size, 3069 u64 *p_linear_size) 3070 { 3071 struct mlxsw_driver *driver = mlxsw_core->driver; 3072 3073 if (!driver->kvd_sizes_get) 3074 return -EINVAL; 3075 3076 return driver->kvd_sizes_get(mlxsw_core, profile, 3077 p_single_size, p_double_size, 3078 p_linear_size); 3079 } 3080 EXPORT_SYMBOL(mlxsw_core_kvd_sizes_get); 3081 3082 int mlxsw_core_resources_query(struct mlxsw_core *mlxsw_core, char *mbox, 3083 struct mlxsw_res *res) 3084 { 3085 int index, i; 3086 u64 data; 3087 u16 id; 3088 int err; 3089 3090 if (!res) 3091 return 0; 3092 3093 mlxsw_cmd_mbox_zero(mbox); 3094 3095 for (index = 0; index < MLXSW_CMD_QUERY_RESOURCES_MAX_QUERIES; 3096 index++) { 3097 err = mlxsw_cmd_query_resources(mlxsw_core, mbox, index); 3098 if (err) 3099 return err; 3100 3101 for (i = 0; i < MLXSW_CMD_QUERY_RESOURCES_PER_QUERY; i++) { 3102 id = mlxsw_cmd_mbox_query_resource_id_get(mbox, i); 3103 data = mlxsw_cmd_mbox_query_resource_data_get(mbox, i); 3104 3105 if (id == MLXSW_CMD_QUERY_RESOURCES_TABLE_END_ID) 3106 return 0; 3107 3108 mlxsw_res_parse(res, id, data); 3109 } 3110 } 3111 3112 /* If after MLXSW_RESOURCES_QUERY_MAX_QUERIES we still didn't get 3113 * MLXSW_RESOURCES_TABLE_END_ID, something went bad in the FW. 3114 */ 3115 return -EIO; 3116 } 3117 EXPORT_SYMBOL(mlxsw_core_resources_query); 3118 3119 u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core) 3120 { 3121 return mlxsw_core->bus->read_frc_h(mlxsw_core->bus_priv); 3122 } 3123 EXPORT_SYMBOL(mlxsw_core_read_frc_h); 3124 3125 u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core) 3126 { 3127 return mlxsw_core->bus->read_frc_l(mlxsw_core->bus_priv); 3128 } 3129 EXPORT_SYMBOL(mlxsw_core_read_frc_l); 3130 3131 void mlxsw_core_emad_string_tlv_enable(struct mlxsw_core *mlxsw_core) 3132 { 3133 mlxsw_core->emad.enable_string_tlv = true; 3134 } 3135 EXPORT_SYMBOL(mlxsw_core_emad_string_tlv_enable); 3136 3137 static int __init mlxsw_core_module_init(void) 3138 { 3139 int err; 3140 3141 mlxsw_wq = alloc_workqueue(mlxsw_core_driver_name, 0, 0); 3142 if (!mlxsw_wq) 3143 return -ENOMEM; 3144 mlxsw_owq = alloc_ordered_workqueue("%s_ordered", 0, 3145 mlxsw_core_driver_name); 3146 if (!mlxsw_owq) { 3147 err = -ENOMEM; 3148 goto err_alloc_ordered_workqueue; 3149 } 3150 return 0; 3151 3152 err_alloc_ordered_workqueue: 3153 destroy_workqueue(mlxsw_wq); 3154 return err; 3155 } 3156 3157 static void __exit mlxsw_core_module_exit(void) 3158 { 3159 destroy_workqueue(mlxsw_owq); 3160 destroy_workqueue(mlxsw_wq); 3161 } 3162 3163 module_init(mlxsw_core_module_init); 3164 module_exit(mlxsw_core_module_exit); 3165 3166 MODULE_LICENSE("Dual BSD/GPL"); 3167 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); 3168 MODULE_DESCRIPTION("Mellanox switch device core driver"); 3169