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_copy(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, "fw.psid", fw_info_psid); 1448 if (err) 1449 return err; 1450 1451 sprintf(buf, "%d.%d.%d", fw_major, fw_minor, fw_sub_minor); 1452 err = devlink_info_version_running_put(req, "fw.version", buf); 1453 if (err) 1454 return err; 1455 1456 return 0; 1457 } 1458 1459 static int 1460 mlxsw_devlink_core_bus_device_reload_down(struct devlink *devlink, 1461 bool netns_change, enum devlink_reload_action action, 1462 enum devlink_reload_limit limit, 1463 struct netlink_ext_ack *extack) 1464 { 1465 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1466 1467 if (!(mlxsw_core->bus->features & MLXSW_BUS_F_RESET)) 1468 return -EOPNOTSUPP; 1469 1470 mlxsw_core_bus_device_unregister(mlxsw_core, true); 1471 return 0; 1472 } 1473 1474 static int 1475 mlxsw_devlink_core_bus_device_reload_up(struct devlink *devlink, enum devlink_reload_action action, 1476 enum devlink_reload_limit limit, u32 *actions_performed, 1477 struct netlink_ext_ack *extack) 1478 { 1479 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1480 1481 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | 1482 BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE); 1483 return mlxsw_core_bus_device_register(mlxsw_core->bus_info, 1484 mlxsw_core->bus, 1485 mlxsw_core->bus_priv, true, 1486 devlink, extack); 1487 } 1488 1489 static int mlxsw_devlink_flash_update(struct devlink *devlink, 1490 struct devlink_flash_update_params *params, 1491 struct netlink_ext_ack *extack) 1492 { 1493 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1494 1495 return mlxsw_core_fw_flash_update(mlxsw_core, params, extack); 1496 } 1497 1498 static int mlxsw_devlink_trap_init(struct devlink *devlink, 1499 const struct devlink_trap *trap, 1500 void *trap_ctx) 1501 { 1502 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1503 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1504 1505 if (!mlxsw_driver->trap_init) 1506 return -EOPNOTSUPP; 1507 return mlxsw_driver->trap_init(mlxsw_core, trap, trap_ctx); 1508 } 1509 1510 static void mlxsw_devlink_trap_fini(struct devlink *devlink, 1511 const struct devlink_trap *trap, 1512 void *trap_ctx) 1513 { 1514 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1515 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1516 1517 if (!mlxsw_driver->trap_fini) 1518 return; 1519 mlxsw_driver->trap_fini(mlxsw_core, trap, trap_ctx); 1520 } 1521 1522 static int mlxsw_devlink_trap_action_set(struct devlink *devlink, 1523 const struct devlink_trap *trap, 1524 enum devlink_trap_action action, 1525 struct netlink_ext_ack *extack) 1526 { 1527 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1528 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1529 1530 if (!mlxsw_driver->trap_action_set) 1531 return -EOPNOTSUPP; 1532 return mlxsw_driver->trap_action_set(mlxsw_core, trap, action, extack); 1533 } 1534 1535 static int 1536 mlxsw_devlink_trap_group_init(struct devlink *devlink, 1537 const struct devlink_trap_group *group) 1538 { 1539 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1540 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1541 1542 if (!mlxsw_driver->trap_group_init) 1543 return -EOPNOTSUPP; 1544 return mlxsw_driver->trap_group_init(mlxsw_core, group); 1545 } 1546 1547 static int 1548 mlxsw_devlink_trap_group_set(struct devlink *devlink, 1549 const struct devlink_trap_group *group, 1550 const struct devlink_trap_policer *policer, 1551 struct netlink_ext_ack *extack) 1552 { 1553 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1554 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1555 1556 if (!mlxsw_driver->trap_group_set) 1557 return -EOPNOTSUPP; 1558 return mlxsw_driver->trap_group_set(mlxsw_core, group, policer, extack); 1559 } 1560 1561 static int 1562 mlxsw_devlink_trap_policer_init(struct devlink *devlink, 1563 const struct devlink_trap_policer *policer) 1564 { 1565 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1566 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1567 1568 if (!mlxsw_driver->trap_policer_init) 1569 return -EOPNOTSUPP; 1570 return mlxsw_driver->trap_policer_init(mlxsw_core, policer); 1571 } 1572 1573 static void 1574 mlxsw_devlink_trap_policer_fini(struct devlink *devlink, 1575 const struct devlink_trap_policer *policer) 1576 { 1577 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1578 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1579 1580 if (!mlxsw_driver->trap_policer_fini) 1581 return; 1582 mlxsw_driver->trap_policer_fini(mlxsw_core, policer); 1583 } 1584 1585 static int 1586 mlxsw_devlink_trap_policer_set(struct devlink *devlink, 1587 const struct devlink_trap_policer *policer, 1588 u64 rate, u64 burst, 1589 struct netlink_ext_ack *extack) 1590 { 1591 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1592 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1593 1594 if (!mlxsw_driver->trap_policer_set) 1595 return -EOPNOTSUPP; 1596 return mlxsw_driver->trap_policer_set(mlxsw_core, policer, rate, burst, 1597 extack); 1598 } 1599 1600 static int 1601 mlxsw_devlink_trap_policer_counter_get(struct devlink *devlink, 1602 const struct devlink_trap_policer *policer, 1603 u64 *p_drops) 1604 { 1605 struct mlxsw_core *mlxsw_core = devlink_priv(devlink); 1606 struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; 1607 1608 if (!mlxsw_driver->trap_policer_counter_get) 1609 return -EOPNOTSUPP; 1610 return mlxsw_driver->trap_policer_counter_get(mlxsw_core, policer, 1611 p_drops); 1612 } 1613 1614 static const struct devlink_ops mlxsw_devlink_ops = { 1615 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | 1616 BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE), 1617 .reload_down = mlxsw_devlink_core_bus_device_reload_down, 1618 .reload_up = mlxsw_devlink_core_bus_device_reload_up, 1619 .port_type_set = mlxsw_devlink_port_type_set, 1620 .port_split = mlxsw_devlink_port_split, 1621 .port_unsplit = mlxsw_devlink_port_unsplit, 1622 .sb_pool_get = mlxsw_devlink_sb_pool_get, 1623 .sb_pool_set = mlxsw_devlink_sb_pool_set, 1624 .sb_port_pool_get = mlxsw_devlink_sb_port_pool_get, 1625 .sb_port_pool_set = mlxsw_devlink_sb_port_pool_set, 1626 .sb_tc_pool_bind_get = mlxsw_devlink_sb_tc_pool_bind_get, 1627 .sb_tc_pool_bind_set = mlxsw_devlink_sb_tc_pool_bind_set, 1628 .sb_occ_snapshot = mlxsw_devlink_sb_occ_snapshot, 1629 .sb_occ_max_clear = mlxsw_devlink_sb_occ_max_clear, 1630 .sb_occ_port_pool_get = mlxsw_devlink_sb_occ_port_pool_get, 1631 .sb_occ_tc_port_bind_get = mlxsw_devlink_sb_occ_tc_port_bind_get, 1632 .info_get = mlxsw_devlink_info_get, 1633 .flash_update = mlxsw_devlink_flash_update, 1634 .trap_init = mlxsw_devlink_trap_init, 1635 .trap_fini = mlxsw_devlink_trap_fini, 1636 .trap_action_set = mlxsw_devlink_trap_action_set, 1637 .trap_group_init = mlxsw_devlink_trap_group_init, 1638 .trap_group_set = mlxsw_devlink_trap_group_set, 1639 .trap_policer_init = mlxsw_devlink_trap_policer_init, 1640 .trap_policer_fini = mlxsw_devlink_trap_policer_fini, 1641 .trap_policer_set = mlxsw_devlink_trap_policer_set, 1642 .trap_policer_counter_get = mlxsw_devlink_trap_policer_counter_get, 1643 }; 1644 1645 static int mlxsw_core_params_register(struct mlxsw_core *mlxsw_core) 1646 { 1647 int err; 1648 1649 err = mlxsw_core_fw_params_register(mlxsw_core); 1650 if (err) 1651 return err; 1652 1653 if (mlxsw_core->driver->params_register) { 1654 err = mlxsw_core->driver->params_register(mlxsw_core); 1655 if (err) 1656 goto err_params_register; 1657 } 1658 return 0; 1659 1660 err_params_register: 1661 mlxsw_core_fw_params_unregister(mlxsw_core); 1662 return err; 1663 } 1664 1665 static void mlxsw_core_params_unregister(struct mlxsw_core *mlxsw_core) 1666 { 1667 mlxsw_core_fw_params_unregister(mlxsw_core); 1668 if (mlxsw_core->driver->params_register) 1669 mlxsw_core->driver->params_unregister(mlxsw_core); 1670 } 1671 1672 struct mlxsw_core_health_event { 1673 struct mlxsw_core *mlxsw_core; 1674 char mfde_pl[MLXSW_REG_MFDE_LEN]; 1675 struct work_struct work; 1676 }; 1677 1678 static void mlxsw_core_health_event_work(struct work_struct *work) 1679 { 1680 struct mlxsw_core_health_event *event; 1681 struct mlxsw_core *mlxsw_core; 1682 1683 event = container_of(work, struct mlxsw_core_health_event, work); 1684 mlxsw_core = event->mlxsw_core; 1685 devlink_health_report(mlxsw_core->health.fw_fatal, "FW fatal event occurred", 1686 event->mfde_pl); 1687 kfree(event); 1688 } 1689 1690 static void mlxsw_core_health_listener_func(const struct mlxsw_reg_info *reg, 1691 char *mfde_pl, void *priv) 1692 { 1693 struct mlxsw_core_health_event *event; 1694 struct mlxsw_core *mlxsw_core = priv; 1695 1696 event = kmalloc(sizeof(*event), GFP_ATOMIC); 1697 if (!event) 1698 return; 1699 event->mlxsw_core = mlxsw_core; 1700 memcpy(event->mfde_pl, mfde_pl, sizeof(event->mfde_pl)); 1701 INIT_WORK(&event->work, mlxsw_core_health_event_work); 1702 mlxsw_core_schedule_work(&event->work); 1703 } 1704 1705 static const struct mlxsw_listener mlxsw_core_health_listener = 1706 MLXSW_EVENTL(mlxsw_core_health_listener_func, MFDE, MFDE); 1707 1708 static int mlxsw_core_health_fw_fatal_dump(struct devlink_health_reporter *reporter, 1709 struct devlink_fmsg *fmsg, void *priv_ctx, 1710 struct netlink_ext_ack *extack) 1711 { 1712 char *mfde_pl = priv_ctx; 1713 char *val_str; 1714 u8 event_id; 1715 u32 val; 1716 int err; 1717 1718 if (!priv_ctx) 1719 /* User-triggered dumps are not possible */ 1720 return -EOPNOTSUPP; 1721 1722 val = mlxsw_reg_mfde_irisc_id_get(mfde_pl); 1723 err = devlink_fmsg_u8_pair_put(fmsg, "irisc_id", val); 1724 if (err) 1725 return err; 1726 err = devlink_fmsg_arr_pair_nest_start(fmsg, "event"); 1727 if (err) 1728 return err; 1729 1730 event_id = mlxsw_reg_mfde_event_id_get(mfde_pl); 1731 err = devlink_fmsg_u32_pair_put(fmsg, "id", event_id); 1732 if (err) 1733 return err; 1734 switch (event_id) { 1735 case MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO: 1736 val_str = "CR space timeout"; 1737 break; 1738 case MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP: 1739 val_str = "KVD insertion machine stopped"; 1740 break; 1741 default: 1742 val_str = NULL; 1743 } 1744 if (val_str) { 1745 err = devlink_fmsg_string_pair_put(fmsg, "desc", val_str); 1746 if (err) 1747 return err; 1748 } 1749 err = devlink_fmsg_arr_pair_nest_end(fmsg); 1750 if (err) 1751 return err; 1752 1753 val = mlxsw_reg_mfde_method_get(mfde_pl); 1754 switch (val) { 1755 case MLXSW_REG_MFDE_METHOD_QUERY: 1756 val_str = "query"; 1757 break; 1758 case MLXSW_REG_MFDE_METHOD_WRITE: 1759 val_str = "write"; 1760 break; 1761 default: 1762 val_str = NULL; 1763 } 1764 if (val_str) { 1765 err = devlink_fmsg_string_pair_put(fmsg, "method", val_str); 1766 if (err) 1767 return err; 1768 } 1769 1770 val = mlxsw_reg_mfde_long_process_get(mfde_pl); 1771 err = devlink_fmsg_bool_pair_put(fmsg, "long_process", val); 1772 if (err) 1773 return err; 1774 1775 val = mlxsw_reg_mfde_command_type_get(mfde_pl); 1776 switch (val) { 1777 case MLXSW_REG_MFDE_COMMAND_TYPE_MAD: 1778 val_str = "mad"; 1779 break; 1780 case MLXSW_REG_MFDE_COMMAND_TYPE_EMAD: 1781 val_str = "emad"; 1782 break; 1783 case MLXSW_REG_MFDE_COMMAND_TYPE_CMDIF: 1784 val_str = "cmdif"; 1785 break; 1786 default: 1787 val_str = NULL; 1788 } 1789 if (val_str) { 1790 err = devlink_fmsg_string_pair_put(fmsg, "command_type", val_str); 1791 if (err) 1792 return err; 1793 } 1794 1795 val = mlxsw_reg_mfde_reg_attr_id_get(mfde_pl); 1796 err = devlink_fmsg_u32_pair_put(fmsg, "reg_attr_id", val); 1797 if (err) 1798 return err; 1799 1800 if (event_id == MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO) { 1801 val = mlxsw_reg_mfde_log_address_get(mfde_pl); 1802 err = devlink_fmsg_u32_pair_put(fmsg, "log_address", val); 1803 if (err) 1804 return err; 1805 val = mlxsw_reg_mfde_log_id_get(mfde_pl); 1806 err = devlink_fmsg_u8_pair_put(fmsg, "log_irisc_id", val); 1807 if (err) 1808 return err; 1809 val = mlxsw_reg_mfde_log_ip_get(mfde_pl); 1810 err = devlink_fmsg_u64_pair_put(fmsg, "log_ip", val); 1811 if (err) 1812 return err; 1813 } else if (event_id == MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP) { 1814 val = mlxsw_reg_mfde_pipes_mask_get(mfde_pl); 1815 err = devlink_fmsg_u32_pair_put(fmsg, "pipes_mask", val); 1816 if (err) 1817 return err; 1818 } 1819 1820 return 0; 1821 } 1822 1823 static int 1824 mlxsw_core_health_fw_fatal_test(struct devlink_health_reporter *reporter, 1825 struct netlink_ext_ack *extack) 1826 { 1827 struct mlxsw_core *mlxsw_core = devlink_health_reporter_priv(reporter); 1828 char mfgd_pl[MLXSW_REG_MFGD_LEN]; 1829 int err; 1830 1831 /* Read the register first to make sure no other bits are changed. */ 1832 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1833 if (err) 1834 return err; 1835 mlxsw_reg_mfgd_trigger_test_set(mfgd_pl, true); 1836 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1837 } 1838 1839 static const struct devlink_health_reporter_ops 1840 mlxsw_core_health_fw_fatal_ops = { 1841 .name = "fw_fatal", 1842 .dump = mlxsw_core_health_fw_fatal_dump, 1843 .test = mlxsw_core_health_fw_fatal_test, 1844 }; 1845 1846 static int mlxsw_core_health_fw_fatal_config(struct mlxsw_core *mlxsw_core, 1847 bool enable) 1848 { 1849 char mfgd_pl[MLXSW_REG_MFGD_LEN]; 1850 int err; 1851 1852 /* Read the register first to make sure no other bits are changed. */ 1853 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1854 if (err) 1855 return err; 1856 mlxsw_reg_mfgd_fatal_event_mode_set(mfgd_pl, enable); 1857 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); 1858 } 1859 1860 static int mlxsw_core_health_init(struct mlxsw_core *mlxsw_core) 1861 { 1862 struct devlink *devlink = priv_to_devlink(mlxsw_core); 1863 struct devlink_health_reporter *fw_fatal; 1864 int err; 1865 1866 if (!mlxsw_core->driver->fw_fatal_enabled) 1867 return 0; 1868 1869 fw_fatal = devlink_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops, 1870 0, mlxsw_core); 1871 if (IS_ERR(fw_fatal)) { 1872 dev_err(mlxsw_core->bus_info->dev, "Failed to create fw fatal reporter"); 1873 return PTR_ERR(fw_fatal); 1874 } 1875 mlxsw_core->health.fw_fatal = fw_fatal; 1876 1877 err = mlxsw_core_trap_register(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1878 if (err) 1879 goto err_trap_register; 1880 1881 err = mlxsw_core_health_fw_fatal_config(mlxsw_core, true); 1882 if (err) 1883 goto err_fw_fatal_config; 1884 1885 return 0; 1886 1887 err_fw_fatal_config: 1888 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1889 err_trap_register: 1890 devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); 1891 return err; 1892 } 1893 1894 static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core) 1895 { 1896 if (!mlxsw_core->driver->fw_fatal_enabled) 1897 return; 1898 1899 mlxsw_core_health_fw_fatal_config(mlxsw_core, false); 1900 mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); 1901 /* Make sure there is no more event work scheduled */ 1902 mlxsw_core_flush_owq(); 1903 devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); 1904 } 1905 1906 static int 1907 __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, 1908 const struct mlxsw_bus *mlxsw_bus, 1909 void *bus_priv, bool reload, 1910 struct devlink *devlink, 1911 struct netlink_ext_ack *extack) 1912 { 1913 const char *device_kind = mlxsw_bus_info->device_kind; 1914 struct mlxsw_core *mlxsw_core; 1915 struct mlxsw_driver *mlxsw_driver; 1916 struct mlxsw_res *res; 1917 size_t alloc_size; 1918 int err; 1919 1920 mlxsw_driver = mlxsw_core_driver_get(device_kind); 1921 if (!mlxsw_driver) 1922 return -EINVAL; 1923 1924 if (!reload) { 1925 alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; 1926 devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); 1927 if (!devlink) { 1928 err = -ENOMEM; 1929 goto err_devlink_alloc; 1930 } 1931 } 1932 1933 mlxsw_core = devlink_priv(devlink); 1934 INIT_LIST_HEAD(&mlxsw_core->rx_listener_list); 1935 INIT_LIST_HEAD(&mlxsw_core->event_listener_list); 1936 mlxsw_core->driver = mlxsw_driver; 1937 mlxsw_core->bus = mlxsw_bus; 1938 mlxsw_core->bus_priv = bus_priv; 1939 mlxsw_core->bus_info = mlxsw_bus_info; 1940 1941 res = mlxsw_driver->res_query_enabled ? &mlxsw_core->res : NULL; 1942 err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile, res); 1943 if (err) 1944 goto err_bus_init; 1945 1946 if (mlxsw_driver->resources_register && !reload) { 1947 err = mlxsw_driver->resources_register(mlxsw_core); 1948 if (err) 1949 goto err_register_resources; 1950 } 1951 1952 err = mlxsw_ports_init(mlxsw_core, reload); 1953 if (err) 1954 goto err_ports_init; 1955 1956 if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG) && 1957 MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) { 1958 alloc_size = sizeof(u8) * 1959 MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG) * 1960 MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); 1961 mlxsw_core->lag.mapping = kzalloc(alloc_size, GFP_KERNEL); 1962 if (!mlxsw_core->lag.mapping) { 1963 err = -ENOMEM; 1964 goto err_alloc_lag_mapping; 1965 } 1966 } 1967 1968 err = mlxsw_emad_init(mlxsw_core); 1969 if (err) 1970 goto err_emad_init; 1971 1972 if (!reload) { 1973 err = devlink_register(devlink, mlxsw_bus_info->dev); 1974 if (err) 1975 goto err_devlink_register; 1976 } 1977 1978 if (!reload) { 1979 err = mlxsw_core_params_register(mlxsw_core); 1980 if (err) 1981 goto err_register_params; 1982 } 1983 1984 err = mlxsw_core_fw_rev_validate(mlxsw_core, mlxsw_bus_info, mlxsw_driver->fw_req_rev, 1985 mlxsw_driver->fw_filename); 1986 if (err) 1987 goto err_fw_rev_validate; 1988 1989 err = mlxsw_core_health_init(mlxsw_core); 1990 if (err) 1991 goto err_health_init; 1992 1993 if (mlxsw_driver->init) { 1994 err = mlxsw_driver->init(mlxsw_core, mlxsw_bus_info, extack); 1995 if (err) 1996 goto err_driver_init; 1997 } 1998 1999 err = mlxsw_hwmon_init(mlxsw_core, mlxsw_bus_info, &mlxsw_core->hwmon); 2000 if (err) 2001 goto err_hwmon_init; 2002 2003 err = mlxsw_thermal_init(mlxsw_core, mlxsw_bus_info, 2004 &mlxsw_core->thermal); 2005 if (err) 2006 goto err_thermal_init; 2007 2008 err = mlxsw_env_init(mlxsw_core, &mlxsw_core->env); 2009 if (err) 2010 goto err_env_init; 2011 2012 mlxsw_core->is_initialized = true; 2013 devlink_params_publish(devlink); 2014 2015 if (!reload) 2016 devlink_reload_enable(devlink); 2017 2018 return 0; 2019 2020 err_env_init: 2021 mlxsw_thermal_fini(mlxsw_core->thermal); 2022 err_thermal_init: 2023 mlxsw_hwmon_fini(mlxsw_core->hwmon); 2024 err_hwmon_init: 2025 if (mlxsw_core->driver->fini) 2026 mlxsw_core->driver->fini(mlxsw_core); 2027 err_driver_init: 2028 mlxsw_core_health_fini(mlxsw_core); 2029 err_health_init: 2030 err_fw_rev_validate: 2031 if (!reload) 2032 mlxsw_core_params_unregister(mlxsw_core); 2033 err_register_params: 2034 if (!reload) 2035 devlink_unregister(devlink); 2036 err_devlink_register: 2037 mlxsw_emad_fini(mlxsw_core); 2038 err_emad_init: 2039 kfree(mlxsw_core->lag.mapping); 2040 err_alloc_lag_mapping: 2041 mlxsw_ports_fini(mlxsw_core, reload); 2042 err_ports_init: 2043 if (!reload) 2044 devlink_resources_unregister(devlink, NULL); 2045 err_register_resources: 2046 mlxsw_bus->fini(bus_priv); 2047 err_bus_init: 2048 if (!reload) 2049 devlink_free(devlink); 2050 err_devlink_alloc: 2051 return err; 2052 } 2053 2054 int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, 2055 const struct mlxsw_bus *mlxsw_bus, 2056 void *bus_priv, bool reload, 2057 struct devlink *devlink, 2058 struct netlink_ext_ack *extack) 2059 { 2060 bool called_again = false; 2061 int err; 2062 2063 again: 2064 err = __mlxsw_core_bus_device_register(mlxsw_bus_info, mlxsw_bus, 2065 bus_priv, reload, 2066 devlink, extack); 2067 /* -EAGAIN is returned in case the FW was updated. FW needs 2068 * a reset, so lets try to call __mlxsw_core_bus_device_register() 2069 * again. 2070 */ 2071 if (err == -EAGAIN && !called_again) { 2072 called_again = true; 2073 goto again; 2074 } 2075 2076 return err; 2077 } 2078 EXPORT_SYMBOL(mlxsw_core_bus_device_register); 2079 2080 void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, 2081 bool reload) 2082 { 2083 struct devlink *devlink = priv_to_devlink(mlxsw_core); 2084 2085 if (!reload) 2086 devlink_reload_disable(devlink); 2087 if (devlink_is_reload_failed(devlink)) { 2088 if (!reload) 2089 /* Only the parts that were not de-initialized in the 2090 * failed reload attempt need to be de-initialized. 2091 */ 2092 goto reload_fail_deinit; 2093 else 2094 return; 2095 } 2096 2097 devlink_params_unpublish(devlink); 2098 mlxsw_core->is_initialized = false; 2099 mlxsw_env_fini(mlxsw_core->env); 2100 mlxsw_thermal_fini(mlxsw_core->thermal); 2101 mlxsw_hwmon_fini(mlxsw_core->hwmon); 2102 if (mlxsw_core->driver->fini) 2103 mlxsw_core->driver->fini(mlxsw_core); 2104 mlxsw_core_health_fini(mlxsw_core); 2105 if (!reload) 2106 mlxsw_core_params_unregister(mlxsw_core); 2107 if (!reload) 2108 devlink_unregister(devlink); 2109 mlxsw_emad_fini(mlxsw_core); 2110 kfree(mlxsw_core->lag.mapping); 2111 mlxsw_ports_fini(mlxsw_core, reload); 2112 if (!reload) 2113 devlink_resources_unregister(devlink, NULL); 2114 mlxsw_core->bus->fini(mlxsw_core->bus_priv); 2115 if (!reload) 2116 devlink_free(devlink); 2117 2118 return; 2119 2120 reload_fail_deinit: 2121 mlxsw_core_params_unregister(mlxsw_core); 2122 devlink_unregister(devlink); 2123 devlink_resources_unregister(devlink, NULL); 2124 devlink_free(devlink); 2125 } 2126 EXPORT_SYMBOL(mlxsw_core_bus_device_unregister); 2127 2128 bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core, 2129 const struct mlxsw_tx_info *tx_info) 2130 { 2131 return mlxsw_core->bus->skb_transmit_busy(mlxsw_core->bus_priv, 2132 tx_info); 2133 } 2134 EXPORT_SYMBOL(mlxsw_core_skb_transmit_busy); 2135 2136 int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, 2137 const struct mlxsw_tx_info *tx_info) 2138 { 2139 return mlxsw_core->bus->skb_transmit(mlxsw_core->bus_priv, skb, 2140 tx_info); 2141 } 2142 EXPORT_SYMBOL(mlxsw_core_skb_transmit); 2143 2144 void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core, 2145 struct sk_buff *skb, u8 local_port) 2146 { 2147 if (mlxsw_core->driver->ptp_transmitted) 2148 mlxsw_core->driver->ptp_transmitted(mlxsw_core, skb, 2149 local_port); 2150 } 2151 EXPORT_SYMBOL(mlxsw_core_ptp_transmitted); 2152 2153 static bool __is_rx_listener_equal(const struct mlxsw_rx_listener *rxl_a, 2154 const struct mlxsw_rx_listener *rxl_b) 2155 { 2156 return (rxl_a->func == rxl_b->func && 2157 rxl_a->local_port == rxl_b->local_port && 2158 rxl_a->trap_id == rxl_b->trap_id && 2159 rxl_a->mirror_reason == rxl_b->mirror_reason); 2160 } 2161 2162 static struct mlxsw_rx_listener_item * 2163 __find_rx_listener_item(struct mlxsw_core *mlxsw_core, 2164 const struct mlxsw_rx_listener *rxl) 2165 { 2166 struct mlxsw_rx_listener_item *rxl_item; 2167 2168 list_for_each_entry(rxl_item, &mlxsw_core->rx_listener_list, list) { 2169 if (__is_rx_listener_equal(&rxl_item->rxl, rxl)) 2170 return rxl_item; 2171 } 2172 return NULL; 2173 } 2174 2175 int mlxsw_core_rx_listener_register(struct mlxsw_core *mlxsw_core, 2176 const struct mlxsw_rx_listener *rxl, 2177 void *priv, bool enabled) 2178 { 2179 struct mlxsw_rx_listener_item *rxl_item; 2180 2181 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2182 if (rxl_item) 2183 return -EEXIST; 2184 rxl_item = kmalloc(sizeof(*rxl_item), GFP_KERNEL); 2185 if (!rxl_item) 2186 return -ENOMEM; 2187 rxl_item->rxl = *rxl; 2188 rxl_item->priv = priv; 2189 rxl_item->enabled = enabled; 2190 2191 list_add_rcu(&rxl_item->list, &mlxsw_core->rx_listener_list); 2192 return 0; 2193 } 2194 EXPORT_SYMBOL(mlxsw_core_rx_listener_register); 2195 2196 void mlxsw_core_rx_listener_unregister(struct mlxsw_core *mlxsw_core, 2197 const struct mlxsw_rx_listener *rxl) 2198 { 2199 struct mlxsw_rx_listener_item *rxl_item; 2200 2201 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2202 if (!rxl_item) 2203 return; 2204 list_del_rcu(&rxl_item->list); 2205 synchronize_rcu(); 2206 kfree(rxl_item); 2207 } 2208 EXPORT_SYMBOL(mlxsw_core_rx_listener_unregister); 2209 2210 static void 2211 mlxsw_core_rx_listener_state_set(struct mlxsw_core *mlxsw_core, 2212 const struct mlxsw_rx_listener *rxl, 2213 bool enabled) 2214 { 2215 struct mlxsw_rx_listener_item *rxl_item; 2216 2217 rxl_item = __find_rx_listener_item(mlxsw_core, rxl); 2218 if (WARN_ON(!rxl_item)) 2219 return; 2220 rxl_item->enabled = enabled; 2221 } 2222 2223 static void mlxsw_core_event_listener_func(struct sk_buff *skb, u8 local_port, 2224 void *priv) 2225 { 2226 struct mlxsw_event_listener_item *event_listener_item = priv; 2227 struct mlxsw_core *mlxsw_core; 2228 struct mlxsw_reg_info reg; 2229 char *payload; 2230 char *reg_tlv; 2231 char *op_tlv; 2232 2233 mlxsw_core = event_listener_item->mlxsw_core; 2234 trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), true, 0, 2235 skb->data, skb->len); 2236 2237 mlxsw_emad_tlv_parse(skb); 2238 op_tlv = mlxsw_emad_op_tlv(skb); 2239 reg_tlv = mlxsw_emad_reg_tlv(skb); 2240 2241 reg.id = mlxsw_emad_op_tlv_register_id_get(op_tlv); 2242 reg.len = (mlxsw_emad_reg_tlv_len_get(reg_tlv) - 1) * sizeof(u32); 2243 payload = mlxsw_emad_reg_payload(reg_tlv); 2244 event_listener_item->el.func(®, payload, event_listener_item->priv); 2245 dev_kfree_skb(skb); 2246 } 2247 2248 static bool __is_event_listener_equal(const struct mlxsw_event_listener *el_a, 2249 const struct mlxsw_event_listener *el_b) 2250 { 2251 return (el_a->func == el_b->func && 2252 el_a->trap_id == el_b->trap_id); 2253 } 2254 2255 static struct mlxsw_event_listener_item * 2256 __find_event_listener_item(struct mlxsw_core *mlxsw_core, 2257 const struct mlxsw_event_listener *el) 2258 { 2259 struct mlxsw_event_listener_item *el_item; 2260 2261 list_for_each_entry(el_item, &mlxsw_core->event_listener_list, list) { 2262 if (__is_event_listener_equal(&el_item->el, el)) 2263 return el_item; 2264 } 2265 return NULL; 2266 } 2267 2268 int mlxsw_core_event_listener_register(struct mlxsw_core *mlxsw_core, 2269 const struct mlxsw_event_listener *el, 2270 void *priv) 2271 { 2272 int err; 2273 struct mlxsw_event_listener_item *el_item; 2274 const struct mlxsw_rx_listener rxl = { 2275 .func = mlxsw_core_event_listener_func, 2276 .local_port = MLXSW_PORT_DONT_CARE, 2277 .trap_id = el->trap_id, 2278 }; 2279 2280 el_item = __find_event_listener_item(mlxsw_core, el); 2281 if (el_item) 2282 return -EEXIST; 2283 el_item = kmalloc(sizeof(*el_item), GFP_KERNEL); 2284 if (!el_item) 2285 return -ENOMEM; 2286 el_item->mlxsw_core = mlxsw_core; 2287 el_item->el = *el; 2288 el_item->priv = priv; 2289 2290 err = mlxsw_core_rx_listener_register(mlxsw_core, &rxl, el_item, true); 2291 if (err) 2292 goto err_rx_listener_register; 2293 2294 /* No reason to save item if we did not manage to register an RX 2295 * listener for it. 2296 */ 2297 list_add_rcu(&el_item->list, &mlxsw_core->event_listener_list); 2298 2299 return 0; 2300 2301 err_rx_listener_register: 2302 kfree(el_item); 2303 return err; 2304 } 2305 EXPORT_SYMBOL(mlxsw_core_event_listener_register); 2306 2307 void mlxsw_core_event_listener_unregister(struct mlxsw_core *mlxsw_core, 2308 const struct mlxsw_event_listener *el) 2309 { 2310 struct mlxsw_event_listener_item *el_item; 2311 const struct mlxsw_rx_listener rxl = { 2312 .func = mlxsw_core_event_listener_func, 2313 .local_port = MLXSW_PORT_DONT_CARE, 2314 .trap_id = el->trap_id, 2315 }; 2316 2317 el_item = __find_event_listener_item(mlxsw_core, el); 2318 if (!el_item) 2319 return; 2320 mlxsw_core_rx_listener_unregister(mlxsw_core, &rxl); 2321 list_del(&el_item->list); 2322 kfree(el_item); 2323 } 2324 EXPORT_SYMBOL(mlxsw_core_event_listener_unregister); 2325 2326 static int mlxsw_core_listener_register(struct mlxsw_core *mlxsw_core, 2327 const struct mlxsw_listener *listener, 2328 void *priv, bool enabled) 2329 { 2330 if (listener->is_event) { 2331 WARN_ON(!enabled); 2332 return mlxsw_core_event_listener_register(mlxsw_core, 2333 &listener->event_listener, 2334 priv); 2335 } else { 2336 return mlxsw_core_rx_listener_register(mlxsw_core, 2337 &listener->rx_listener, 2338 priv, enabled); 2339 } 2340 } 2341 2342 static void mlxsw_core_listener_unregister(struct mlxsw_core *mlxsw_core, 2343 const struct mlxsw_listener *listener, 2344 void *priv) 2345 { 2346 if (listener->is_event) 2347 mlxsw_core_event_listener_unregister(mlxsw_core, 2348 &listener->event_listener); 2349 else 2350 mlxsw_core_rx_listener_unregister(mlxsw_core, 2351 &listener->rx_listener); 2352 } 2353 2354 int mlxsw_core_trap_register(struct mlxsw_core *mlxsw_core, 2355 const struct mlxsw_listener *listener, void *priv) 2356 { 2357 enum mlxsw_reg_htgt_trap_group trap_group; 2358 enum mlxsw_reg_hpkt_action action; 2359 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2360 int err; 2361 2362 err = mlxsw_core_listener_register(mlxsw_core, listener, priv, 2363 listener->enabled_on_register); 2364 if (err) 2365 return err; 2366 2367 action = listener->enabled_on_register ? listener->en_action : 2368 listener->dis_action; 2369 trap_group = listener->enabled_on_register ? listener->en_trap_group : 2370 listener->dis_trap_group; 2371 mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, 2372 trap_group, listener->is_ctrl); 2373 err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2374 if (err) 2375 goto err_trap_set; 2376 2377 return 0; 2378 2379 err_trap_set: 2380 mlxsw_core_listener_unregister(mlxsw_core, listener, priv); 2381 return err; 2382 } 2383 EXPORT_SYMBOL(mlxsw_core_trap_register); 2384 2385 void mlxsw_core_trap_unregister(struct mlxsw_core *mlxsw_core, 2386 const struct mlxsw_listener *listener, 2387 void *priv) 2388 { 2389 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2390 2391 if (!listener->is_event) { 2392 mlxsw_reg_hpkt_pack(hpkt_pl, listener->dis_action, 2393 listener->trap_id, listener->dis_trap_group, 2394 listener->is_ctrl); 2395 mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2396 } 2397 2398 mlxsw_core_listener_unregister(mlxsw_core, listener, priv); 2399 } 2400 EXPORT_SYMBOL(mlxsw_core_trap_unregister); 2401 2402 int mlxsw_core_trap_state_set(struct mlxsw_core *mlxsw_core, 2403 const struct mlxsw_listener *listener, 2404 bool enabled) 2405 { 2406 enum mlxsw_reg_htgt_trap_group trap_group; 2407 enum mlxsw_reg_hpkt_action action; 2408 char hpkt_pl[MLXSW_REG_HPKT_LEN]; 2409 int err; 2410 2411 /* Not supported for event listener */ 2412 if (WARN_ON(listener->is_event)) 2413 return -EINVAL; 2414 2415 action = enabled ? listener->en_action : listener->dis_action; 2416 trap_group = enabled ? listener->en_trap_group : 2417 listener->dis_trap_group; 2418 mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, 2419 trap_group, listener->is_ctrl); 2420 err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); 2421 if (err) 2422 return err; 2423 2424 mlxsw_core_rx_listener_state_set(mlxsw_core, &listener->rx_listener, 2425 enabled); 2426 return 0; 2427 } 2428 EXPORT_SYMBOL(mlxsw_core_trap_state_set); 2429 2430 static u64 mlxsw_core_tid_get(struct mlxsw_core *mlxsw_core) 2431 { 2432 return atomic64_inc_return(&mlxsw_core->emad.tid); 2433 } 2434 2435 static int mlxsw_core_reg_access_emad(struct mlxsw_core *mlxsw_core, 2436 const struct mlxsw_reg_info *reg, 2437 char *payload, 2438 enum mlxsw_core_reg_access_type type, 2439 struct list_head *bulk_list, 2440 mlxsw_reg_trans_cb_t *cb, 2441 unsigned long cb_priv) 2442 { 2443 u64 tid = mlxsw_core_tid_get(mlxsw_core); 2444 struct mlxsw_reg_trans *trans; 2445 int err; 2446 2447 trans = kzalloc(sizeof(*trans), GFP_KERNEL); 2448 if (!trans) 2449 return -ENOMEM; 2450 2451 err = mlxsw_emad_reg_access(mlxsw_core, reg, payload, type, trans, 2452 bulk_list, cb, cb_priv, tid); 2453 if (err) { 2454 kfree_rcu(trans, rcu); 2455 return err; 2456 } 2457 return 0; 2458 } 2459 2460 int mlxsw_reg_trans_query(struct mlxsw_core *mlxsw_core, 2461 const struct mlxsw_reg_info *reg, char *payload, 2462 struct list_head *bulk_list, 2463 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) 2464 { 2465 return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, 2466 MLXSW_CORE_REG_ACCESS_TYPE_QUERY, 2467 bulk_list, cb, cb_priv); 2468 } 2469 EXPORT_SYMBOL(mlxsw_reg_trans_query); 2470 2471 int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core, 2472 const struct mlxsw_reg_info *reg, char *payload, 2473 struct list_head *bulk_list, 2474 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) 2475 { 2476 return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, 2477 MLXSW_CORE_REG_ACCESS_TYPE_WRITE, 2478 bulk_list, cb, cb_priv); 2479 } 2480 EXPORT_SYMBOL(mlxsw_reg_trans_write); 2481 2482 #define MLXSW_REG_TRANS_ERR_STRING_SIZE 256 2483 2484 static int mlxsw_reg_trans_wait(struct mlxsw_reg_trans *trans) 2485 { 2486 char err_string[MLXSW_REG_TRANS_ERR_STRING_SIZE]; 2487 struct mlxsw_core *mlxsw_core = trans->core; 2488 int err; 2489 2490 wait_for_completion(&trans->completion); 2491 cancel_delayed_work_sync(&trans->timeout_dw); 2492 err = trans->err; 2493 2494 if (trans->retries) 2495 dev_warn(mlxsw_core->bus_info->dev, "EMAD retries (%d/%d) (tid=%llx)\n", 2496 trans->retries, MLXSW_EMAD_MAX_RETRY, trans->tid); 2497 if (err) { 2498 dev_err(mlxsw_core->bus_info->dev, "EMAD reg access failed (tid=%llx,reg_id=%x(%s),type=%s,status=%x(%s))\n", 2499 trans->tid, trans->reg->id, 2500 mlxsw_reg_id_str(trans->reg->id), 2501 mlxsw_core_reg_access_type_str(trans->type), 2502 trans->emad_status, 2503 mlxsw_emad_op_tlv_status_str(trans->emad_status)); 2504 2505 snprintf(err_string, MLXSW_REG_TRANS_ERR_STRING_SIZE, 2506 "(tid=%llx,reg_id=%x(%s)) %s (%s)\n", trans->tid, 2507 trans->reg->id, mlxsw_reg_id_str(trans->reg->id), 2508 mlxsw_emad_op_tlv_status_str(trans->emad_status), 2509 trans->emad_err_string ? trans->emad_err_string : ""); 2510 2511 trace_devlink_hwerr(priv_to_devlink(mlxsw_core), 2512 trans->emad_status, err_string); 2513 2514 kfree(trans->emad_err_string); 2515 } 2516 2517 list_del(&trans->bulk_list); 2518 kfree_rcu(trans, rcu); 2519 return err; 2520 } 2521 2522 int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list) 2523 { 2524 struct mlxsw_reg_trans *trans; 2525 struct mlxsw_reg_trans *tmp; 2526 int sum_err = 0; 2527 int err; 2528 2529 list_for_each_entry_safe(trans, tmp, bulk_list, bulk_list) { 2530 err = mlxsw_reg_trans_wait(trans); 2531 if (err && sum_err == 0) 2532 sum_err = err; /* first error to be returned */ 2533 } 2534 return sum_err; 2535 } 2536 EXPORT_SYMBOL(mlxsw_reg_trans_bulk_wait); 2537 2538 static int mlxsw_core_reg_access_cmd(struct mlxsw_core *mlxsw_core, 2539 const struct mlxsw_reg_info *reg, 2540 char *payload, 2541 enum mlxsw_core_reg_access_type type) 2542 { 2543 enum mlxsw_emad_op_tlv_status status; 2544 int err, n_retry; 2545 bool reset_ok; 2546 char *in_mbox, *out_mbox, *tmp; 2547 2548 dev_dbg(mlxsw_core->bus_info->dev, "Reg cmd access (reg_id=%x(%s),type=%s)\n", 2549 reg->id, mlxsw_reg_id_str(reg->id), 2550 mlxsw_core_reg_access_type_str(type)); 2551 2552 in_mbox = mlxsw_cmd_mbox_alloc(); 2553 if (!in_mbox) 2554 return -ENOMEM; 2555 2556 out_mbox = mlxsw_cmd_mbox_alloc(); 2557 if (!out_mbox) { 2558 err = -ENOMEM; 2559 goto free_in_mbox; 2560 } 2561 2562 mlxsw_emad_pack_op_tlv(in_mbox, reg, type, 2563 mlxsw_core_tid_get(mlxsw_core)); 2564 tmp = in_mbox + MLXSW_EMAD_OP_TLV_LEN * sizeof(u32); 2565 mlxsw_emad_pack_reg_tlv(tmp, reg, payload); 2566 2567 /* There is a special treatment needed for MRSR (reset) register. 2568 * The command interface will return error after the command 2569 * is executed, so tell the lower layer to expect it 2570 * and cope accordingly. 2571 */ 2572 reset_ok = reg->id == MLXSW_REG_MRSR_ID; 2573 2574 n_retry = 0; 2575 retry: 2576 err = mlxsw_cmd_access_reg(mlxsw_core, reset_ok, in_mbox, out_mbox); 2577 if (!err) { 2578 err = mlxsw_emad_process_status(out_mbox, &status); 2579 if (err) { 2580 if (err == -EAGAIN && n_retry++ < MLXSW_EMAD_MAX_RETRY) 2581 goto retry; 2582 dev_err(mlxsw_core->bus_info->dev, "Reg cmd access status failed (status=%x(%s))\n", 2583 status, mlxsw_emad_op_tlv_status_str(status)); 2584 } 2585 } 2586 2587 if (!err) 2588 memcpy(payload, mlxsw_emad_reg_payload_cmd(out_mbox), 2589 reg->len); 2590 2591 mlxsw_cmd_mbox_free(out_mbox); 2592 free_in_mbox: 2593 mlxsw_cmd_mbox_free(in_mbox); 2594 if (err) 2595 dev_err(mlxsw_core->bus_info->dev, "Reg cmd access failed (reg_id=%x(%s),type=%s)\n", 2596 reg->id, mlxsw_reg_id_str(reg->id), 2597 mlxsw_core_reg_access_type_str(type)); 2598 return err; 2599 } 2600 2601 static void mlxsw_core_reg_access_cb(struct mlxsw_core *mlxsw_core, 2602 char *payload, size_t payload_len, 2603 unsigned long cb_priv) 2604 { 2605 char *orig_payload = (char *) cb_priv; 2606 2607 memcpy(orig_payload, payload, payload_len); 2608 } 2609 2610 static int mlxsw_core_reg_access(struct mlxsw_core *mlxsw_core, 2611 const struct mlxsw_reg_info *reg, 2612 char *payload, 2613 enum mlxsw_core_reg_access_type type) 2614 { 2615 LIST_HEAD(bulk_list); 2616 int err; 2617 2618 /* During initialization EMAD interface is not available to us, 2619 * so we default to command interface. We switch to EMAD interface 2620 * after setting the appropriate traps. 2621 */ 2622 if (!mlxsw_core->emad.use_emad) 2623 return mlxsw_core_reg_access_cmd(mlxsw_core, reg, 2624 payload, type); 2625 2626 err = mlxsw_core_reg_access_emad(mlxsw_core, reg, 2627 payload, type, &bulk_list, 2628 mlxsw_core_reg_access_cb, 2629 (unsigned long) payload); 2630 if (err) 2631 return err; 2632 return mlxsw_reg_trans_bulk_wait(&bulk_list); 2633 } 2634 2635 int mlxsw_reg_query(struct mlxsw_core *mlxsw_core, 2636 const struct mlxsw_reg_info *reg, char *payload) 2637 { 2638 return mlxsw_core_reg_access(mlxsw_core, reg, payload, 2639 MLXSW_CORE_REG_ACCESS_TYPE_QUERY); 2640 } 2641 EXPORT_SYMBOL(mlxsw_reg_query); 2642 2643 int mlxsw_reg_write(struct mlxsw_core *mlxsw_core, 2644 const struct mlxsw_reg_info *reg, char *payload) 2645 { 2646 return mlxsw_core_reg_access(mlxsw_core, reg, payload, 2647 MLXSW_CORE_REG_ACCESS_TYPE_WRITE); 2648 } 2649 EXPORT_SYMBOL(mlxsw_reg_write); 2650 2651 void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, 2652 struct mlxsw_rx_info *rx_info) 2653 { 2654 struct mlxsw_rx_listener_item *rxl_item; 2655 const struct mlxsw_rx_listener *rxl; 2656 u8 local_port; 2657 bool found = false; 2658 2659 if (rx_info->is_lag) { 2660 dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: lag_id = %d, lag_port_index = 0x%x\n", 2661 __func__, rx_info->u.lag_id, 2662 rx_info->trap_id); 2663 /* Upper layer does not care if the skb came from LAG or not, 2664 * so just get the local_port for the lag port and push it up. 2665 */ 2666 local_port = mlxsw_core_lag_mapping_get(mlxsw_core, 2667 rx_info->u.lag_id, 2668 rx_info->lag_port_index); 2669 } else { 2670 local_port = rx_info->u.sys_port; 2671 } 2672 2673 dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: local_port = %d, trap_id = 0x%x\n", 2674 __func__, local_port, rx_info->trap_id); 2675 2676 if ((rx_info->trap_id >= MLXSW_TRAP_ID_MAX) || 2677 (local_port >= mlxsw_core->max_ports)) 2678 goto drop; 2679 2680 rcu_read_lock(); 2681 list_for_each_entry_rcu(rxl_item, &mlxsw_core->rx_listener_list, list) { 2682 rxl = &rxl_item->rxl; 2683 if ((rxl->local_port == MLXSW_PORT_DONT_CARE || 2684 rxl->local_port == local_port) && 2685 rxl->trap_id == rx_info->trap_id && 2686 rxl->mirror_reason == rx_info->mirror_reason) { 2687 if (rxl_item->enabled) 2688 found = true; 2689 break; 2690 } 2691 } 2692 if (!found) { 2693 rcu_read_unlock(); 2694 goto drop; 2695 } 2696 2697 rxl->func(skb, local_port, rxl_item->priv); 2698 rcu_read_unlock(); 2699 return; 2700 2701 drop: 2702 dev_kfree_skb(skb); 2703 } 2704 EXPORT_SYMBOL(mlxsw_core_skb_receive); 2705 2706 static int mlxsw_core_lag_mapping_index(struct mlxsw_core *mlxsw_core, 2707 u16 lag_id, u8 port_index) 2708 { 2709 return MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS) * lag_id + 2710 port_index; 2711 } 2712 2713 void mlxsw_core_lag_mapping_set(struct mlxsw_core *mlxsw_core, 2714 u16 lag_id, u8 port_index, u8 local_port) 2715 { 2716 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2717 lag_id, port_index); 2718 2719 mlxsw_core->lag.mapping[index] = local_port; 2720 } 2721 EXPORT_SYMBOL(mlxsw_core_lag_mapping_set); 2722 2723 u8 mlxsw_core_lag_mapping_get(struct mlxsw_core *mlxsw_core, 2724 u16 lag_id, u8 port_index) 2725 { 2726 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2727 lag_id, port_index); 2728 2729 return mlxsw_core->lag.mapping[index]; 2730 } 2731 EXPORT_SYMBOL(mlxsw_core_lag_mapping_get); 2732 2733 void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core, 2734 u16 lag_id, u8 local_port) 2735 { 2736 int i; 2737 2738 for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); i++) { 2739 int index = mlxsw_core_lag_mapping_index(mlxsw_core, 2740 lag_id, i); 2741 2742 if (mlxsw_core->lag.mapping[index] == local_port) 2743 mlxsw_core->lag.mapping[index] = 0; 2744 } 2745 } 2746 EXPORT_SYMBOL(mlxsw_core_lag_mapping_clear); 2747 2748 bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, 2749 enum mlxsw_res_id res_id) 2750 { 2751 return mlxsw_res_valid(&mlxsw_core->res, res_id); 2752 } 2753 EXPORT_SYMBOL(mlxsw_core_res_valid); 2754 2755 u64 mlxsw_core_res_get(struct mlxsw_core *mlxsw_core, 2756 enum mlxsw_res_id res_id) 2757 { 2758 return mlxsw_res_get(&mlxsw_core->res, res_id); 2759 } 2760 EXPORT_SYMBOL(mlxsw_core_res_get); 2761 2762 static int __mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, 2763 enum devlink_port_flavour flavour, 2764 u32 port_number, bool split, 2765 u32 split_port_subnumber, 2766 bool splittable, u32 lanes, 2767 const unsigned char *switch_id, 2768 unsigned char switch_id_len) 2769 { 2770 struct devlink *devlink = priv_to_devlink(mlxsw_core); 2771 struct mlxsw_core_port *mlxsw_core_port = 2772 &mlxsw_core->ports[local_port]; 2773 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2774 struct devlink_port_attrs attrs = {}; 2775 int err; 2776 2777 attrs.split = split; 2778 attrs.lanes = lanes; 2779 attrs.splittable = splittable; 2780 attrs.flavour = flavour; 2781 attrs.phys.port_number = port_number; 2782 attrs.phys.split_subport_number = split_port_subnumber; 2783 memcpy(attrs.switch_id.id, switch_id, switch_id_len); 2784 attrs.switch_id.id_len = switch_id_len; 2785 mlxsw_core_port->local_port = local_port; 2786 devlink_port_attrs_set(devlink_port, &attrs); 2787 err = devlink_port_register(devlink, devlink_port, local_port); 2788 if (err) 2789 memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); 2790 return err; 2791 } 2792 2793 static void __mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) 2794 { 2795 struct mlxsw_core_port *mlxsw_core_port = 2796 &mlxsw_core->ports[local_port]; 2797 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2798 2799 devlink_port_unregister(devlink_port); 2800 memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); 2801 } 2802 2803 int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, 2804 u32 port_number, bool split, 2805 u32 split_port_subnumber, 2806 bool splittable, u32 lanes, 2807 const unsigned char *switch_id, 2808 unsigned char switch_id_len) 2809 { 2810 int err; 2811 2812 err = __mlxsw_core_port_init(mlxsw_core, local_port, 2813 DEVLINK_PORT_FLAVOUR_PHYSICAL, 2814 port_number, split, split_port_subnumber, 2815 splittable, lanes, 2816 switch_id, switch_id_len); 2817 if (err) 2818 return err; 2819 2820 atomic_inc(&mlxsw_core->active_ports_count); 2821 return 0; 2822 } 2823 EXPORT_SYMBOL(mlxsw_core_port_init); 2824 2825 void mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) 2826 { 2827 atomic_dec(&mlxsw_core->active_ports_count); 2828 2829 __mlxsw_core_port_fini(mlxsw_core, local_port); 2830 } 2831 EXPORT_SYMBOL(mlxsw_core_port_fini); 2832 2833 int mlxsw_core_cpu_port_init(struct mlxsw_core *mlxsw_core, 2834 void *port_driver_priv, 2835 const unsigned char *switch_id, 2836 unsigned char switch_id_len) 2837 { 2838 struct mlxsw_core_port *mlxsw_core_port = 2839 &mlxsw_core->ports[MLXSW_PORT_CPU_PORT]; 2840 int err; 2841 2842 err = __mlxsw_core_port_init(mlxsw_core, MLXSW_PORT_CPU_PORT, 2843 DEVLINK_PORT_FLAVOUR_CPU, 2844 0, false, 0, false, 0, 2845 switch_id, switch_id_len); 2846 if (err) 2847 return err; 2848 2849 mlxsw_core_port->port_driver_priv = port_driver_priv; 2850 return 0; 2851 } 2852 EXPORT_SYMBOL(mlxsw_core_cpu_port_init); 2853 2854 void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core) 2855 { 2856 __mlxsw_core_port_fini(mlxsw_core, MLXSW_PORT_CPU_PORT); 2857 } 2858 EXPORT_SYMBOL(mlxsw_core_cpu_port_fini); 2859 2860 void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u8 local_port, 2861 void *port_driver_priv, struct net_device *dev) 2862 { 2863 struct mlxsw_core_port *mlxsw_core_port = 2864 &mlxsw_core->ports[local_port]; 2865 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2866 2867 mlxsw_core_port->port_driver_priv = port_driver_priv; 2868 devlink_port_type_eth_set(devlink_port, dev); 2869 } 2870 EXPORT_SYMBOL(mlxsw_core_port_eth_set); 2871 2872 void mlxsw_core_port_ib_set(struct mlxsw_core *mlxsw_core, u8 local_port, 2873 void *port_driver_priv) 2874 { 2875 struct mlxsw_core_port *mlxsw_core_port = 2876 &mlxsw_core->ports[local_port]; 2877 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2878 2879 mlxsw_core_port->port_driver_priv = port_driver_priv; 2880 devlink_port_type_ib_set(devlink_port, NULL); 2881 } 2882 EXPORT_SYMBOL(mlxsw_core_port_ib_set); 2883 2884 void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u8 local_port, 2885 void *port_driver_priv) 2886 { 2887 struct mlxsw_core_port *mlxsw_core_port = 2888 &mlxsw_core->ports[local_port]; 2889 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2890 2891 mlxsw_core_port->port_driver_priv = port_driver_priv; 2892 devlink_port_type_clear(devlink_port); 2893 } 2894 EXPORT_SYMBOL(mlxsw_core_port_clear); 2895 2896 enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core, 2897 u8 local_port) 2898 { 2899 struct mlxsw_core_port *mlxsw_core_port = 2900 &mlxsw_core->ports[local_port]; 2901 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2902 2903 return devlink_port->type; 2904 } 2905 EXPORT_SYMBOL(mlxsw_core_port_type_get); 2906 2907 2908 struct devlink_port * 2909 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core, 2910 u8 local_port) 2911 { 2912 struct mlxsw_core_port *mlxsw_core_port = 2913 &mlxsw_core->ports[local_port]; 2914 struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; 2915 2916 return devlink_port; 2917 } 2918 EXPORT_SYMBOL(mlxsw_core_port_devlink_port_get); 2919 2920 bool mlxsw_core_port_is_xm(const struct mlxsw_core *mlxsw_core, u8 local_port) 2921 { 2922 const struct mlxsw_bus_info *bus_info = mlxsw_core->bus_info; 2923 int i; 2924 2925 for (i = 0; i < bus_info->xm_local_ports_count; i++) 2926 if (bus_info->xm_local_ports[i] == local_port) 2927 return true; 2928 return false; 2929 } 2930 EXPORT_SYMBOL(mlxsw_core_port_is_xm); 2931 2932 struct mlxsw_env *mlxsw_core_env(const struct mlxsw_core *mlxsw_core) 2933 { 2934 return mlxsw_core->env; 2935 } 2936 2937 bool mlxsw_core_is_initialized(const struct mlxsw_core *mlxsw_core) 2938 { 2939 return mlxsw_core->is_initialized; 2940 } 2941 2942 int mlxsw_core_module_max_width(struct mlxsw_core *mlxsw_core, u8 module) 2943 { 2944 enum mlxsw_reg_pmtm_module_type module_type; 2945 char pmtm_pl[MLXSW_REG_PMTM_LEN]; 2946 int err; 2947 2948 mlxsw_reg_pmtm_pack(pmtm_pl, module); 2949 err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(pmtm), pmtm_pl); 2950 if (err) 2951 return err; 2952 mlxsw_reg_pmtm_unpack(pmtm_pl, &module_type); 2953 2954 /* Here we need to get the module width according to the module type. */ 2955 2956 switch (module_type) { 2957 case MLXSW_REG_PMTM_MODULE_TYPE_C2C8X: 2958 case MLXSW_REG_PMTM_MODULE_TYPE_QSFP_DD: 2959 case MLXSW_REG_PMTM_MODULE_TYPE_OSFP: 2960 return 8; 2961 case MLXSW_REG_PMTM_MODULE_TYPE_C2C4X: 2962 case MLXSW_REG_PMTM_MODULE_TYPE_BP_4X: 2963 case MLXSW_REG_PMTM_MODULE_TYPE_QSFP: 2964 return 4; 2965 case MLXSW_REG_PMTM_MODULE_TYPE_C2C2X: 2966 case MLXSW_REG_PMTM_MODULE_TYPE_BP_2X: 2967 case MLXSW_REG_PMTM_MODULE_TYPE_SFP_DD: 2968 case MLXSW_REG_PMTM_MODULE_TYPE_DSFP: 2969 return 2; 2970 case MLXSW_REG_PMTM_MODULE_TYPE_C2C1X: 2971 case MLXSW_REG_PMTM_MODULE_TYPE_BP_1X: 2972 case MLXSW_REG_PMTM_MODULE_TYPE_SFP: 2973 return 1; 2974 default: 2975 return -EINVAL; 2976 } 2977 } 2978 EXPORT_SYMBOL(mlxsw_core_module_max_width); 2979 2980 static void mlxsw_core_buf_dump_dbg(struct mlxsw_core *mlxsw_core, 2981 const char *buf, size_t size) 2982 { 2983 __be32 *m = (__be32 *) buf; 2984 int i; 2985 int count = size / sizeof(__be32); 2986 2987 for (i = count - 1; i >= 0; i--) 2988 if (m[i]) 2989 break; 2990 i++; 2991 count = i ? i : 1; 2992 for (i = 0; i < count; i += 4) 2993 dev_dbg(mlxsw_core->bus_info->dev, "%04x - %08x %08x %08x %08x\n", 2994 i * 4, be32_to_cpu(m[i]), be32_to_cpu(m[i + 1]), 2995 be32_to_cpu(m[i + 2]), be32_to_cpu(m[i + 3])); 2996 } 2997 2998 int mlxsw_cmd_exec(struct mlxsw_core *mlxsw_core, u16 opcode, u8 opcode_mod, 2999 u32 in_mod, bool out_mbox_direct, bool reset_ok, 3000 char *in_mbox, size_t in_mbox_size, 3001 char *out_mbox, size_t out_mbox_size) 3002 { 3003 u8 status; 3004 int err; 3005 3006 BUG_ON(in_mbox_size % sizeof(u32) || out_mbox_size % sizeof(u32)); 3007 if (!mlxsw_core->bus->cmd_exec) 3008 return -EOPNOTSUPP; 3009 3010 dev_dbg(mlxsw_core->bus_info->dev, "Cmd exec (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", 3011 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, in_mod); 3012 if (in_mbox) { 3013 dev_dbg(mlxsw_core->bus_info->dev, "Input mailbox:\n"); 3014 mlxsw_core_buf_dump_dbg(mlxsw_core, in_mbox, in_mbox_size); 3015 } 3016 3017 err = mlxsw_core->bus->cmd_exec(mlxsw_core->bus_priv, opcode, 3018 opcode_mod, in_mod, out_mbox_direct, 3019 in_mbox, in_mbox_size, 3020 out_mbox, out_mbox_size, &status); 3021 3022 if (!err && out_mbox) { 3023 dev_dbg(mlxsw_core->bus_info->dev, "Output mailbox:\n"); 3024 mlxsw_core_buf_dump_dbg(mlxsw_core, out_mbox, out_mbox_size); 3025 } 3026 3027 if (reset_ok && err == -EIO && 3028 status == MLXSW_CMD_STATUS_RUNNING_RESET) { 3029 err = 0; 3030 } else if (err == -EIO && status != MLXSW_CMD_STATUS_OK) { 3031 dev_err(mlxsw_core->bus_info->dev, "Cmd exec failed (opcode=%x(%s),opcode_mod=%x,in_mod=%x,status=%x(%s))\n", 3032 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, 3033 in_mod, status, mlxsw_cmd_status_str(status)); 3034 } else if (err == -ETIMEDOUT) { 3035 dev_err(mlxsw_core->bus_info->dev, "Cmd exec timed-out (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", 3036 opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, 3037 in_mod); 3038 } 3039 3040 return err; 3041 } 3042 EXPORT_SYMBOL(mlxsw_cmd_exec); 3043 3044 int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay) 3045 { 3046 return queue_delayed_work(mlxsw_wq, dwork, delay); 3047 } 3048 EXPORT_SYMBOL(mlxsw_core_schedule_dw); 3049 3050 bool mlxsw_core_schedule_work(struct work_struct *work) 3051 { 3052 return queue_work(mlxsw_owq, work); 3053 } 3054 EXPORT_SYMBOL(mlxsw_core_schedule_work); 3055 3056 void mlxsw_core_flush_owq(void) 3057 { 3058 flush_workqueue(mlxsw_owq); 3059 } 3060 EXPORT_SYMBOL(mlxsw_core_flush_owq); 3061 3062 int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, 3063 const struct mlxsw_config_profile *profile, 3064 u64 *p_single_size, u64 *p_double_size, 3065 u64 *p_linear_size) 3066 { 3067 struct mlxsw_driver *driver = mlxsw_core->driver; 3068 3069 if (!driver->kvd_sizes_get) 3070 return -EINVAL; 3071 3072 return driver->kvd_sizes_get(mlxsw_core, profile, 3073 p_single_size, p_double_size, 3074 p_linear_size); 3075 } 3076 EXPORT_SYMBOL(mlxsw_core_kvd_sizes_get); 3077 3078 int mlxsw_core_resources_query(struct mlxsw_core *mlxsw_core, char *mbox, 3079 struct mlxsw_res *res) 3080 { 3081 int index, i; 3082 u64 data; 3083 u16 id; 3084 int err; 3085 3086 if (!res) 3087 return 0; 3088 3089 mlxsw_cmd_mbox_zero(mbox); 3090 3091 for (index = 0; index < MLXSW_CMD_QUERY_RESOURCES_MAX_QUERIES; 3092 index++) { 3093 err = mlxsw_cmd_query_resources(mlxsw_core, mbox, index); 3094 if (err) 3095 return err; 3096 3097 for (i = 0; i < MLXSW_CMD_QUERY_RESOURCES_PER_QUERY; i++) { 3098 id = mlxsw_cmd_mbox_query_resource_id_get(mbox, i); 3099 data = mlxsw_cmd_mbox_query_resource_data_get(mbox, i); 3100 3101 if (id == MLXSW_CMD_QUERY_RESOURCES_TABLE_END_ID) 3102 return 0; 3103 3104 mlxsw_res_parse(res, id, data); 3105 } 3106 } 3107 3108 /* If after MLXSW_RESOURCES_QUERY_MAX_QUERIES we still didn't get 3109 * MLXSW_RESOURCES_TABLE_END_ID, something went bad in the FW. 3110 */ 3111 return -EIO; 3112 } 3113 EXPORT_SYMBOL(mlxsw_core_resources_query); 3114 3115 u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core) 3116 { 3117 return mlxsw_core->bus->read_frc_h(mlxsw_core->bus_priv); 3118 } 3119 EXPORT_SYMBOL(mlxsw_core_read_frc_h); 3120 3121 u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core) 3122 { 3123 return mlxsw_core->bus->read_frc_l(mlxsw_core->bus_priv); 3124 } 3125 EXPORT_SYMBOL(mlxsw_core_read_frc_l); 3126 3127 void mlxsw_core_emad_string_tlv_enable(struct mlxsw_core *mlxsw_core) 3128 { 3129 mlxsw_core->emad.enable_string_tlv = true; 3130 } 3131 EXPORT_SYMBOL(mlxsw_core_emad_string_tlv_enable); 3132 3133 static int __init mlxsw_core_module_init(void) 3134 { 3135 int err; 3136 3137 mlxsw_wq = alloc_workqueue(mlxsw_core_driver_name, 0, 0); 3138 if (!mlxsw_wq) 3139 return -ENOMEM; 3140 mlxsw_owq = alloc_ordered_workqueue("%s_ordered", 0, 3141 mlxsw_core_driver_name); 3142 if (!mlxsw_owq) { 3143 err = -ENOMEM; 3144 goto err_alloc_ordered_workqueue; 3145 } 3146 return 0; 3147 3148 err_alloc_ordered_workqueue: 3149 destroy_workqueue(mlxsw_wq); 3150 return err; 3151 } 3152 3153 static void __exit mlxsw_core_module_exit(void) 3154 { 3155 destroy_workqueue(mlxsw_owq); 3156 destroy_workqueue(mlxsw_wq); 3157 } 3158 3159 module_init(mlxsw_core_module_init); 3160 module_exit(mlxsw_core_module_exit); 3161 3162 MODULE_LICENSE("Dual BSD/GPL"); 3163 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); 3164 MODULE_DESCRIPTION("Mellanox switch device core driver"); 3165