1/*- 2 * Copyright (c) 2013-2019, Mellanox Technologies, Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26#include "opt_rss.h" 27#include "opt_ratelimit.h" 28 29#include <linux/module.h> 30#include <linux/errno.h> 31#include <linux/pci.h> 32#include <linux/dma-mapping.h> 33#include <linux/slab.h> 34#include <linux/delay.h> 35#include <linux/random.h> 36#include <linux/io-mapping.h> 37#include <linux/hardirq.h> 38#include <linux/ktime.h> 39#include <dev/mlx5/driver.h> 40#include <dev/mlx5/cmd.h> 41#include <dev/mlx5/mlx5_core/mlx5_core.h> 42 43static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size); 44static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, 45 struct mlx5_cmd_msg *msg); 46static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg); 47 48enum { 49 CMD_IF_REV = 5, 50}; 51 52enum { 53 NUM_LONG_LISTS = 2, 54 NUM_MED_LISTS = 64, 55 LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 + 56 MLX5_CMD_DATA_BLOCK_SIZE, 57 MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE, 58}; 59 60enum { 61 MLX5_CMD_DELIVERY_STAT_OK = 0x0, 62 MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1, 63 MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2, 64 MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3, 65 MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4, 66 MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5, 67 MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6, 68 MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7, 69 MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8, 70 MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9, 71 MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10, 72}; 73 74struct mlx5_ifc_mbox_out_bits { 75 u8 status[0x8]; 76 u8 reserved_at_8[0x18]; 77 78 u8 syndrome[0x20]; 79 80 u8 reserved_at_40[0x40]; 81}; 82 83struct mlx5_ifc_mbox_in_bits { 84 u8 opcode[0x10]; 85 u8 reserved_at_10[0x10]; 86 87 u8 reserved_at_20[0x10]; 88 u8 op_mod[0x10]; 89 90 u8 reserved_at_40[0x40]; 91}; 92 93 94static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd, 95 struct mlx5_cmd_msg *in, 96 int uin_size, 97 struct mlx5_cmd_msg *out, 98 void *uout, int uout_size, 99 mlx5_cmd_cbk_t cbk, 100 void *context, int page_queue) 101{ 102 gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL; 103 struct mlx5_cmd_work_ent *ent; 104 105 ent = kzalloc(sizeof(*ent), alloc_flags); 106 if (!ent) 107 return ERR_PTR(-ENOMEM); 108 109 ent->in = in; 110 ent->uin_size = uin_size; 111 ent->out = out; 112 ent->uout = uout; 113 ent->uout_size = uout_size; 114 ent->callback = cbk; 115 ent->context = context; 116 ent->cmd = cmd; 117 ent->page_queue = page_queue; 118 119 return ent; 120} 121 122static u8 alloc_token(struct mlx5_cmd *cmd) 123{ 124 u8 token; 125 126 spin_lock(&cmd->token_lock); 127 cmd->token++; 128 if (cmd->token == 0) 129 cmd->token++; 130 token = cmd->token; 131 spin_unlock(&cmd->token_lock); 132 133 return token; 134} 135 136static int alloc_ent(struct mlx5_cmd_work_ent *ent) 137{ 138 unsigned long flags; 139 struct mlx5_cmd *cmd = ent->cmd; 140 struct mlx5_core_dev *dev = 141 container_of(cmd, struct mlx5_core_dev, cmd); 142 int ret = cmd->max_reg_cmds; 143 144 spin_lock_irqsave(&cmd->alloc_lock, flags); 145 if (!ent->page_queue) { 146 ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds); 147 if (ret >= cmd->max_reg_cmds) 148 ret = -1; 149 } 150 151 if (dev->state != MLX5_DEVICE_STATE_UP) 152 ret = -1; 153 154 if (ret != -1) { 155 ent->busy = 1; 156 ent->idx = ret; 157 clear_bit(ent->idx, &cmd->bitmask); 158 cmd->ent_mode[ent->idx] = 159 ent->polling ? MLX5_CMD_MODE_POLLING : MLX5_CMD_MODE_EVENTS; 160 cmd->ent_arr[ent->idx] = ent; 161 } 162 spin_unlock_irqrestore(&cmd->alloc_lock, flags); 163 164 return ret; 165} 166 167static void free_ent(struct mlx5_cmd *cmd, int idx) 168{ 169 unsigned long flags; 170 171 spin_lock_irqsave(&cmd->alloc_lock, flags); 172 cmd->ent_arr[idx] = NULL; /* safety clear */ 173 cmd->ent_mode[idx] = MLX5_CMD_MODE_POLLING; /* reset mode */ 174 set_bit(idx, &cmd->bitmask); 175 spin_unlock_irqrestore(&cmd->alloc_lock, flags); 176} 177 178static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) 179{ 180 return cmd->cmd_buf + (idx << cmd->log_stride); 181} 182 183static u8 xor8_buf(void *buf, int len) 184{ 185 u8 *ptr = buf; 186 u8 sum = 0; 187 int i; 188 189 for (i = 0; i < len; i++) 190 sum ^= ptr[i]; 191 192 return sum; 193} 194 195static int verify_block_sig(struct mlx5_cmd_prot_block *block) 196{ 197 if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff) 198 return -EINVAL; 199 200 if (xor8_buf(block, sizeof(*block)) != 0xff) 201 return -EINVAL; 202 203 return 0; 204} 205 206static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token, 207 int csum) 208{ 209 block->token = token; 210 if (csum) { 211 block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - 212 sizeof(block->data) - 2); 213 block->sig = ~xor8_buf(block, sizeof(*block) - 1); 214 } 215} 216 217static void 218calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum) 219{ 220 size_t i; 221 222 for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { 223 struct mlx5_cmd_prot_block *block; 224 225 block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); 226 227 /* compute signature */ 228 calc_block_sig(block, token, csum); 229 230 /* check for last block */ 231 if (block->next == 0) 232 break; 233 } 234 235 /* make sure data gets written to RAM */ 236 mlx5_fwp_flush(msg); 237} 238 239static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) 240{ 241 ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay)); 242 calc_chain_sig(ent->in, ent->token, csum); 243 calc_chain_sig(ent->out, ent->token, csum); 244} 245 246static void poll_timeout(struct mlx5_cmd_work_ent *ent) 247{ 248 struct mlx5_core_dev *dev = container_of(ent->cmd, 249 struct mlx5_core_dev, cmd); 250 int poll_end = jiffies + 251 msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000); 252 u8 own; 253 254 do { 255 own = ent->lay->status_own; 256 if (!(own & CMD_OWNER_HW) || 257 dev->state != MLX5_DEVICE_STATE_UP) { 258 ent->ret = 0; 259 return; 260 } 261 usleep_range(5000, 10000); 262 } while (time_before(jiffies, poll_end)); 263 264 ent->ret = -ETIMEDOUT; 265} 266 267static void free_cmd(struct mlx5_cmd_work_ent *ent) 268{ 269 cancel_delayed_work_sync(&ent->cb_timeout_work); 270 kfree(ent); 271} 272 273static int 274verify_signature(struct mlx5_cmd_work_ent *ent) 275{ 276 struct mlx5_cmd_msg *msg = ent->out; 277 size_t i; 278 int err; 279 u8 sig; 280 281 sig = xor8_buf(ent->lay, sizeof(*ent->lay)); 282 if (sig != 0xff) 283 return -EINVAL; 284 285 for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { 286 struct mlx5_cmd_prot_block *block; 287 288 block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); 289 290 /* compute signature */ 291 err = verify_block_sig(block); 292 if (err != 0) 293 return (err); 294 295 /* check for last block */ 296 if (block->next == 0) 297 break; 298 } 299 return (0); 300} 301 302static void dump_buf(void *buf, int size, int data_only, int offset) 303{ 304 __be32 *p = buf; 305 int i; 306 307 for (i = 0; i < size; i += 16) { 308 pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]), 309 be32_to_cpu(p[1]), be32_to_cpu(p[2]), 310 be32_to_cpu(p[3])); 311 p += 4; 312 offset += 16; 313 } 314 if (!data_only) 315 pr_debug("\n"); 316} 317 318enum { 319 MLX5_DRIVER_STATUS_ABORTED = 0xfe, 320 MLX5_DRIVER_SYND = 0xbadd00de, 321}; 322 323static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, 324 u32 *synd, u8 *status) 325{ 326 *synd = 0; 327 *status = 0; 328 329 switch (op) { 330 case MLX5_CMD_OP_TEARDOWN_HCA: 331 case MLX5_CMD_OP_DISABLE_HCA: 332 case MLX5_CMD_OP_MANAGE_PAGES: 333 case MLX5_CMD_OP_DESTROY_MKEY: 334 case MLX5_CMD_OP_DESTROY_EQ: 335 case MLX5_CMD_OP_DESTROY_CQ: 336 case MLX5_CMD_OP_DESTROY_QP: 337 case MLX5_CMD_OP_DESTROY_PSV: 338 case MLX5_CMD_OP_DESTROY_SRQ: 339 case MLX5_CMD_OP_DESTROY_XRC_SRQ: 340 case MLX5_CMD_OP_DESTROY_DCT: 341 case MLX5_CMD_OP_DEALLOC_Q_COUNTER: 342 case MLX5_CMD_OP_DEALLOC_PD: 343 case MLX5_CMD_OP_DEALLOC_UAR: 344 case MLX5_CMD_OP_DETACH_FROM_MCG: 345 case MLX5_CMD_OP_DEALLOC_XRCD: 346 case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN: 347 case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT: 348 case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY: 349 case MLX5_CMD_OP_DESTROY_TIR: 350 case MLX5_CMD_OP_DESTROY_SQ: 351 case MLX5_CMD_OP_DESTROY_RQ: 352 case MLX5_CMD_OP_DESTROY_RMP: 353 case MLX5_CMD_OP_DESTROY_TIS: 354 case MLX5_CMD_OP_DESTROY_RQT: 355 case MLX5_CMD_OP_DESTROY_FLOW_TABLE: 356 case MLX5_CMD_OP_DESTROY_FLOW_GROUP: 357 case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY: 358 case MLX5_CMD_OP_2ERR_QP: 359 case MLX5_CMD_OP_2RST_QP: 360 case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT: 361 case MLX5_CMD_OP_MODIFY_FLOW_TABLE: 362 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: 363 case MLX5_CMD_OP_SET_FLOW_TABLE_ROOT: 364 case MLX5_CMD_OP_DESTROY_GENERAL_OBJ: 365 return MLX5_CMD_STAT_OK; 366 367 case MLX5_CMD_OP_QUERY_HCA_CAP: 368 case MLX5_CMD_OP_QUERY_ADAPTER: 369 case MLX5_CMD_OP_INIT_HCA: 370 case MLX5_CMD_OP_ENABLE_HCA: 371 case MLX5_CMD_OP_QUERY_PAGES: 372 case MLX5_CMD_OP_SET_HCA_CAP: 373 case MLX5_CMD_OP_QUERY_ISSI: 374 case MLX5_CMD_OP_SET_ISSI: 375 case MLX5_CMD_OP_CREATE_MKEY: 376 case MLX5_CMD_OP_QUERY_MKEY: 377 case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS: 378 case MLX5_CMD_OP_PAGE_FAULT_RESUME: 379 case MLX5_CMD_OP_CREATE_EQ: 380 case MLX5_CMD_OP_QUERY_EQ: 381 case MLX5_CMD_OP_GEN_EQE: 382 case MLX5_CMD_OP_CREATE_CQ: 383 case MLX5_CMD_OP_QUERY_CQ: 384 case MLX5_CMD_OP_MODIFY_CQ: 385 case MLX5_CMD_OP_CREATE_QP: 386 case MLX5_CMD_OP_RST2INIT_QP: 387 case MLX5_CMD_OP_INIT2RTR_QP: 388 case MLX5_CMD_OP_RTR2RTS_QP: 389 case MLX5_CMD_OP_RTS2RTS_QP: 390 case MLX5_CMD_OP_SQERR2RTS_QP: 391 case MLX5_CMD_OP_QUERY_QP: 392 case MLX5_CMD_OP_SQD_RTS_QP: 393 case MLX5_CMD_OP_INIT2INIT_QP: 394 case MLX5_CMD_OP_CREATE_PSV: 395 case MLX5_CMD_OP_CREATE_SRQ: 396 case MLX5_CMD_OP_QUERY_SRQ: 397 case MLX5_CMD_OP_ARM_RQ: 398 case MLX5_CMD_OP_CREATE_XRC_SRQ: 399 case MLX5_CMD_OP_QUERY_XRC_SRQ: 400 case MLX5_CMD_OP_ARM_XRC_SRQ: 401 case MLX5_CMD_OP_CREATE_DCT: 402 case MLX5_CMD_OP_DRAIN_DCT: 403 case MLX5_CMD_OP_QUERY_DCT: 404 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: 405 case MLX5_CMD_OP_QUERY_VPORT_STATE: 406 case MLX5_CMD_OP_MODIFY_VPORT_STATE: 407 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: 408 case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT: 409 case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: 410 case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: 411 case MLX5_CMD_OP_SET_ROCE_ADDRESS: 412 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: 413 case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT: 414 case MLX5_CMD_OP_QUERY_HCA_VPORT_GID: 415 case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY: 416 case MLX5_CMD_OP_QUERY_VNIC_ENV: 417 case MLX5_CMD_OP_QUERY_VPORT_COUNTER: 418 case MLX5_CMD_OP_ALLOC_Q_COUNTER: 419 case MLX5_CMD_OP_QUERY_Q_COUNTER: 420 case MLX5_CMD_OP_ALLOC_PD: 421 case MLX5_CMD_OP_ALLOC_UAR: 422 case MLX5_CMD_OP_CONFIG_INT_MODERATION: 423 case MLX5_CMD_OP_ACCESS_REG: 424 case MLX5_CMD_OP_ATTACH_TO_MCG: 425 case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: 426 case MLX5_CMD_OP_MAD_IFC: 427 case MLX5_CMD_OP_QUERY_MAD_DEMUX: 428 case MLX5_CMD_OP_SET_MAD_DEMUX: 429 case MLX5_CMD_OP_NOP: 430 case MLX5_CMD_OP_ALLOC_XRCD: 431 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: 432 case MLX5_CMD_OP_QUERY_CONG_STATUS: 433 case MLX5_CMD_OP_MODIFY_CONG_STATUS: 434 case MLX5_CMD_OP_QUERY_CONG_PARAMS: 435 case MLX5_CMD_OP_MODIFY_CONG_PARAMS: 436 case MLX5_CMD_OP_QUERY_CONG_STATISTICS: 437 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: 438 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: 439 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: 440 case MLX5_CMD_OP_CREATE_TIR: 441 case MLX5_CMD_OP_MODIFY_TIR: 442 case MLX5_CMD_OP_QUERY_TIR: 443 case MLX5_CMD_OP_CREATE_SQ: 444 case MLX5_CMD_OP_MODIFY_SQ: 445 case MLX5_CMD_OP_QUERY_SQ: 446 case MLX5_CMD_OP_CREATE_RQ: 447 case MLX5_CMD_OP_MODIFY_RQ: 448 case MLX5_CMD_OP_QUERY_RQ: 449 case MLX5_CMD_OP_CREATE_RMP: 450 case MLX5_CMD_OP_MODIFY_RMP: 451 case MLX5_CMD_OP_QUERY_RMP: 452 case MLX5_CMD_OP_CREATE_TIS: 453 case MLX5_CMD_OP_MODIFY_TIS: 454 case MLX5_CMD_OP_QUERY_TIS: 455 case MLX5_CMD_OP_CREATE_RQT: 456 case MLX5_CMD_OP_MODIFY_RQT: 457 case MLX5_CMD_OP_QUERY_RQT: 458 case MLX5_CMD_OP_CREATE_FLOW_TABLE: 459 case MLX5_CMD_OP_QUERY_FLOW_TABLE: 460 case MLX5_CMD_OP_CREATE_FLOW_GROUP: 461 case MLX5_CMD_OP_QUERY_FLOW_GROUP: 462 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: 463 case MLX5_CMD_OP_CREATE_GENERAL_OBJ: 464 case MLX5_CMD_OP_MODIFY_GENERAL_OBJ: 465 case MLX5_CMD_OP_QUERY_GENERAL_OBJ: 466 *status = MLX5_DRIVER_STATUS_ABORTED; 467 *synd = MLX5_DRIVER_SYND; 468 return -EIO; 469 default: 470 mlx5_core_err(dev, "Unknown FW command (%d)\n", op); 471 return -EINVAL; 472 } 473} 474 475const char *mlx5_command_str(int command) 476{ 477 #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd 478 479 switch (command) { 480 MLX5_COMMAND_STR_CASE(QUERY_HCA_CAP); 481 MLX5_COMMAND_STR_CASE(SET_HCA_CAP); 482 MLX5_COMMAND_STR_CASE(QUERY_ADAPTER); 483 MLX5_COMMAND_STR_CASE(INIT_HCA); 484 MLX5_COMMAND_STR_CASE(TEARDOWN_HCA); 485 MLX5_COMMAND_STR_CASE(ENABLE_HCA); 486 MLX5_COMMAND_STR_CASE(DISABLE_HCA); 487 MLX5_COMMAND_STR_CASE(QUERY_PAGES); 488 MLX5_COMMAND_STR_CASE(MANAGE_PAGES); 489 MLX5_COMMAND_STR_CASE(QUERY_ISSI); 490 MLX5_COMMAND_STR_CASE(SET_ISSI); 491 MLX5_COMMAND_STR_CASE(CREATE_MKEY); 492 MLX5_COMMAND_STR_CASE(QUERY_MKEY); 493 MLX5_COMMAND_STR_CASE(DESTROY_MKEY); 494 MLX5_COMMAND_STR_CASE(QUERY_SPECIAL_CONTEXTS); 495 MLX5_COMMAND_STR_CASE(PAGE_FAULT_RESUME); 496 MLX5_COMMAND_STR_CASE(CREATE_EQ); 497 MLX5_COMMAND_STR_CASE(DESTROY_EQ); 498 MLX5_COMMAND_STR_CASE(QUERY_EQ); 499 MLX5_COMMAND_STR_CASE(GEN_EQE); 500 MLX5_COMMAND_STR_CASE(CREATE_CQ); 501 MLX5_COMMAND_STR_CASE(DESTROY_CQ); 502 MLX5_COMMAND_STR_CASE(QUERY_CQ); 503 MLX5_COMMAND_STR_CASE(MODIFY_CQ); 504 MLX5_COMMAND_STR_CASE(CREATE_QP); 505 MLX5_COMMAND_STR_CASE(DESTROY_QP); 506 MLX5_COMMAND_STR_CASE(RST2INIT_QP); 507 MLX5_COMMAND_STR_CASE(INIT2RTR_QP); 508 MLX5_COMMAND_STR_CASE(RTR2RTS_QP); 509 MLX5_COMMAND_STR_CASE(RTS2RTS_QP); 510 MLX5_COMMAND_STR_CASE(SQERR2RTS_QP); 511 MLX5_COMMAND_STR_CASE(2ERR_QP); 512 MLX5_COMMAND_STR_CASE(2RST_QP); 513 MLX5_COMMAND_STR_CASE(QUERY_QP); 514 MLX5_COMMAND_STR_CASE(SQD_RTS_QP); 515 MLX5_COMMAND_STR_CASE(MAD_IFC); 516 MLX5_COMMAND_STR_CASE(INIT2INIT_QP); 517 MLX5_COMMAND_STR_CASE(CREATE_PSV); 518 MLX5_COMMAND_STR_CASE(DESTROY_PSV); 519 MLX5_COMMAND_STR_CASE(CREATE_SRQ); 520 MLX5_COMMAND_STR_CASE(DESTROY_SRQ); 521 MLX5_COMMAND_STR_CASE(QUERY_SRQ); 522 MLX5_COMMAND_STR_CASE(ARM_RQ); 523 MLX5_COMMAND_STR_CASE(CREATE_XRC_SRQ); 524 MLX5_COMMAND_STR_CASE(DESTROY_XRC_SRQ); 525 MLX5_COMMAND_STR_CASE(QUERY_XRC_SRQ); 526 MLX5_COMMAND_STR_CASE(ARM_XRC_SRQ); 527 MLX5_COMMAND_STR_CASE(CREATE_DCT); 528 MLX5_COMMAND_STR_CASE(SET_DC_CNAK_TRACE); 529 MLX5_COMMAND_STR_CASE(DESTROY_DCT); 530 MLX5_COMMAND_STR_CASE(DRAIN_DCT); 531 MLX5_COMMAND_STR_CASE(QUERY_DCT); 532 MLX5_COMMAND_STR_CASE(ARM_DCT_FOR_KEY_VIOLATION); 533 MLX5_COMMAND_STR_CASE(QUERY_VPORT_STATE); 534 MLX5_COMMAND_STR_CASE(MODIFY_VPORT_STATE); 535 MLX5_COMMAND_STR_CASE(QUERY_ESW_VPORT_CONTEXT); 536 MLX5_COMMAND_STR_CASE(MODIFY_ESW_VPORT_CONTEXT); 537 MLX5_COMMAND_STR_CASE(QUERY_NIC_VPORT_CONTEXT); 538 MLX5_COMMAND_STR_CASE(MODIFY_NIC_VPORT_CONTEXT); 539 MLX5_COMMAND_STR_CASE(QUERY_ROCE_ADDRESS); 540 MLX5_COMMAND_STR_CASE(SET_ROCE_ADDRESS); 541 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_CONTEXT); 542 MLX5_COMMAND_STR_CASE(MODIFY_HCA_VPORT_CONTEXT); 543 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_GID); 544 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_PKEY); 545 MLX5_COMMAND_STR_CASE(QUERY_VNIC_ENV); 546 MLX5_COMMAND_STR_CASE(QUERY_VPORT_COUNTER); 547 MLX5_COMMAND_STR_CASE(SET_WOL_ROL); 548 MLX5_COMMAND_STR_CASE(QUERY_WOL_ROL); 549 MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER); 550 MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER); 551 MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER); 552 MLX5_COMMAND_STR_CASE(ALLOC_PD); 553 MLX5_COMMAND_STR_CASE(DEALLOC_PD); 554 MLX5_COMMAND_STR_CASE(ALLOC_UAR); 555 MLX5_COMMAND_STR_CASE(DEALLOC_UAR); 556 MLX5_COMMAND_STR_CASE(CONFIG_INT_MODERATION); 557 MLX5_COMMAND_STR_CASE(ATTACH_TO_MCG); 558 MLX5_COMMAND_STR_CASE(DETACH_FROM_MCG); 559 MLX5_COMMAND_STR_CASE(GET_DROPPED_PACKET_LOG); 560 MLX5_COMMAND_STR_CASE(QUERY_MAD_DEMUX); 561 MLX5_COMMAND_STR_CASE(SET_MAD_DEMUX); 562 MLX5_COMMAND_STR_CASE(NOP); 563 MLX5_COMMAND_STR_CASE(ALLOC_XRCD); 564 MLX5_COMMAND_STR_CASE(DEALLOC_XRCD); 565 MLX5_COMMAND_STR_CASE(ALLOC_TRANSPORT_DOMAIN); 566 MLX5_COMMAND_STR_CASE(DEALLOC_TRANSPORT_DOMAIN); 567 MLX5_COMMAND_STR_CASE(QUERY_CONG_STATUS); 568 MLX5_COMMAND_STR_CASE(MODIFY_CONG_STATUS); 569 MLX5_COMMAND_STR_CASE(QUERY_CONG_PARAMS); 570 MLX5_COMMAND_STR_CASE(MODIFY_CONG_PARAMS); 571 MLX5_COMMAND_STR_CASE(QUERY_CONG_STATISTICS); 572 MLX5_COMMAND_STR_CASE(ADD_VXLAN_UDP_DPORT); 573 MLX5_COMMAND_STR_CASE(DELETE_VXLAN_UDP_DPORT); 574 MLX5_COMMAND_STR_CASE(SET_L2_TABLE_ENTRY); 575 MLX5_COMMAND_STR_CASE(QUERY_L2_TABLE_ENTRY); 576 MLX5_COMMAND_STR_CASE(DELETE_L2_TABLE_ENTRY); 577 MLX5_COMMAND_STR_CASE(CREATE_RMP); 578 MLX5_COMMAND_STR_CASE(MODIFY_RMP); 579 MLX5_COMMAND_STR_CASE(DESTROY_RMP); 580 MLX5_COMMAND_STR_CASE(QUERY_RMP); 581 MLX5_COMMAND_STR_CASE(CREATE_RQT); 582 MLX5_COMMAND_STR_CASE(MODIFY_RQT); 583 MLX5_COMMAND_STR_CASE(DESTROY_RQT); 584 MLX5_COMMAND_STR_CASE(QUERY_RQT); 585 MLX5_COMMAND_STR_CASE(ACCESS_REG); 586 MLX5_COMMAND_STR_CASE(CREATE_SQ); 587 MLX5_COMMAND_STR_CASE(MODIFY_SQ); 588 MLX5_COMMAND_STR_CASE(DESTROY_SQ); 589 MLX5_COMMAND_STR_CASE(QUERY_SQ); 590 MLX5_COMMAND_STR_CASE(CREATE_RQ); 591 MLX5_COMMAND_STR_CASE(MODIFY_RQ); 592 MLX5_COMMAND_STR_CASE(DESTROY_RQ); 593 MLX5_COMMAND_STR_CASE(QUERY_RQ); 594 MLX5_COMMAND_STR_CASE(CREATE_TIR); 595 MLX5_COMMAND_STR_CASE(MODIFY_TIR); 596 MLX5_COMMAND_STR_CASE(DESTROY_TIR); 597 MLX5_COMMAND_STR_CASE(QUERY_TIR); 598 MLX5_COMMAND_STR_CASE(CREATE_TIS); 599 MLX5_COMMAND_STR_CASE(MODIFY_TIS); 600 MLX5_COMMAND_STR_CASE(DESTROY_TIS); 601 MLX5_COMMAND_STR_CASE(QUERY_TIS); 602 MLX5_COMMAND_STR_CASE(CREATE_FLOW_TABLE); 603 MLX5_COMMAND_STR_CASE(DESTROY_FLOW_TABLE); 604 MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE); 605 MLX5_COMMAND_STR_CASE(CREATE_FLOW_GROUP); 606 MLX5_COMMAND_STR_CASE(DESTROY_FLOW_GROUP); 607 MLX5_COMMAND_STR_CASE(QUERY_FLOW_GROUP); 608 MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ENTRY); 609 MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE_ENTRY); 610 MLX5_COMMAND_STR_CASE(DELETE_FLOW_TABLE_ENTRY); 611 MLX5_COMMAND_STR_CASE(SET_DIAGNOSTICS); 612 MLX5_COMMAND_STR_CASE(QUERY_DIAGNOSTICS); 613 MLX5_COMMAND_STR_CASE(CREATE_GENERAL_OBJ); 614 MLX5_COMMAND_STR_CASE(MODIFY_GENERAL_OBJ); 615 MLX5_COMMAND_STR_CASE(QUERY_GENERAL_OBJ); 616 MLX5_COMMAND_STR_CASE(DESTROY_GENERAL_OBJ); 617 default: return "unknown command opcode"; 618 } 619} 620 621static const char *cmd_status_str(u8 status) 622{ 623 switch (status) { 624 case MLX5_CMD_STAT_OK: 625 return "OK"; 626 case MLX5_CMD_STAT_INT_ERR: 627 return "internal error"; 628 case MLX5_CMD_STAT_BAD_OP_ERR: 629 return "bad operation"; 630 case MLX5_CMD_STAT_BAD_PARAM_ERR: 631 return "bad parameter"; 632 case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: 633 return "bad system state"; 634 case MLX5_CMD_STAT_BAD_RES_ERR: 635 return "bad resource"; 636 case MLX5_CMD_STAT_RES_BUSY: 637 return "resource busy"; 638 case MLX5_CMD_STAT_LIM_ERR: 639 return "limits exceeded"; 640 case MLX5_CMD_STAT_BAD_RES_STATE_ERR: 641 return "bad resource state"; 642 case MLX5_CMD_STAT_IX_ERR: 643 return "bad index"; 644 case MLX5_CMD_STAT_NO_RES_ERR: 645 return "no resources"; 646 case MLX5_CMD_STAT_BAD_INP_LEN_ERR: 647 return "bad input length"; 648 case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: 649 return "bad output length"; 650 case MLX5_CMD_STAT_BAD_QP_STATE_ERR: 651 return "bad QP state"; 652 case MLX5_CMD_STAT_BAD_PKT_ERR: 653 return "bad packet (discarded)"; 654 case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: 655 return "bad size too many outstanding CQEs"; 656 default: 657 return "unknown status"; 658 } 659} 660 661static int cmd_status_to_err_helper(u8 status) 662{ 663 switch (status) { 664 case MLX5_CMD_STAT_OK: return 0; 665 case MLX5_CMD_STAT_INT_ERR: return -EIO; 666 case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL; 667 case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL; 668 case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO; 669 case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL; 670 case MLX5_CMD_STAT_RES_BUSY: return -EBUSY; 671 case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM; 672 case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL; 673 case MLX5_CMD_STAT_IX_ERR: return -EINVAL; 674 case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN; 675 case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO; 676 case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO; 677 case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL; 678 case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL; 679 case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL; 680 default: return -EIO; 681 } 682} 683 684void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome) 685{ 686 *status = MLX5_GET(mbox_out, out, status); 687 *syndrome = MLX5_GET(mbox_out, out, syndrome); 688} 689 690static int mlx5_cmd_check(struct mlx5_core_dev *dev, void *in, void *out) 691{ 692 u32 syndrome; 693 u8 status; 694 u16 opcode; 695 u16 op_mod; 696 697 mlx5_cmd_mbox_status(out, &status, &syndrome); 698 if (!status) 699 return 0; 700 701 opcode = MLX5_GET(mbox_in, in, opcode); 702 op_mod = MLX5_GET(mbox_in, in, op_mod); 703 704 mlx5_core_err(dev, 705 "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x)\n", 706 mlx5_command_str(opcode), 707 opcode, op_mod, 708 cmd_status_str(status), 709 status, 710 syndrome); 711 712 return cmd_status_to_err_helper(status); 713} 714 715static void dump_command(struct mlx5_core_dev *dev, 716 struct mlx5_cmd_work_ent *ent, int input) 717{ 718 struct mlx5_cmd_msg *msg = input ? ent->in : ent->out; 719 u16 op = MLX5_GET(mbox_in, ent->lay->in, opcode); 720 size_t i; 721 int data_only; 722 int offset = 0; 723 int msg_len = input ? ent->uin_size : ent->uout_size; 724 int dump_len; 725 726 data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA)); 727 728 if (data_only) 729 mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA, 730 "dump command data %s(0x%x) %s\n", 731 mlx5_command_str(op), op, 732 input ? "INPUT" : "OUTPUT"); 733 else 734 mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n", 735 mlx5_command_str(op), op, 736 input ? "INPUT" : "OUTPUT"); 737 738 if (data_only) { 739 if (input) { 740 dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset); 741 offset += sizeof(ent->lay->in); 742 } else { 743 dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset); 744 offset += sizeof(ent->lay->out); 745 } 746 } else { 747 dump_buf(ent->lay, sizeof(*ent->lay), 0, offset); 748 offset += sizeof(*ent->lay); 749 } 750 751 for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { 752 struct mlx5_cmd_prot_block *block; 753 754 block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); 755 756 if (data_only) { 757 if (offset >= msg_len) 758 break; 759 dump_len = min_t(int, 760 MLX5_CMD_DATA_BLOCK_SIZE, msg_len - offset); 761 762 dump_buf(block->data, dump_len, 1, offset); 763 offset += MLX5_CMD_DATA_BLOCK_SIZE; 764 } else { 765 mlx5_core_dbg(dev, "command block:\n"); 766 dump_buf(block, sizeof(*block), 0, offset); 767 offset += sizeof(*block); 768 } 769 770 /* check for last block */ 771 if (block->next == 0) 772 break; 773 } 774 775 if (data_only) 776 pr_debug("\n"); 777} 778 779static u16 msg_to_opcode(struct mlx5_cmd_msg *in) 780{ 781 return MLX5_GET(mbox_in, in->first.data, opcode); 782} 783 784static void cb_timeout_handler(struct work_struct *work) 785{ 786 struct delayed_work *dwork = container_of(work, struct delayed_work, 787 work); 788 struct mlx5_cmd_work_ent *ent = container_of(dwork, 789 struct mlx5_cmd_work_ent, 790 cb_timeout_work); 791 struct mlx5_core_dev *dev = container_of(ent->cmd, struct mlx5_core_dev, 792 cmd); 793 794 ent->ret = -ETIMEDOUT; 795 mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", 796 mlx5_command_str(msg_to_opcode(ent->in)), 797 msg_to_opcode(ent->in)); 798 mlx5_cmd_comp_handler(dev, 1UL << ent->idx, MLX5_CMD_MODE_EVENTS); 799} 800 801static void complete_command(struct mlx5_cmd_work_ent *ent) 802{ 803 struct mlx5_cmd *cmd = ent->cmd; 804 struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, 805 cmd); 806 mlx5_cmd_cbk_t callback; 807 void *context; 808 809 s64 ds; 810 struct mlx5_cmd_stats *stats; 811 unsigned long flags; 812 int err; 813 struct semaphore *sem; 814 815 if (ent->page_queue) 816 sem = &cmd->pages_sem; 817 else 818 sem = &cmd->sem; 819 820 if (dev->state != MLX5_DEVICE_STATE_UP) { 821 u8 status = 0; 822 u32 drv_synd; 823 824 ent->ret = mlx5_internal_err_ret_value(dev, msg_to_opcode(ent->in), &drv_synd, &status); 825 MLX5_SET(mbox_out, ent->out, status, status); 826 MLX5_SET(mbox_out, ent->out, syndrome, drv_synd); 827 } 828 829 if (ent->callback) { 830 ds = ent->ts2 - ent->ts1; 831 if (ent->op < ARRAY_SIZE(cmd->stats)) { 832 stats = &cmd->stats[ent->op]; 833 spin_lock_irqsave(&stats->lock, flags); 834 stats->sum += ds; 835 ++stats->n; 836 spin_unlock_irqrestore(&stats->lock, flags); 837 } 838 839 callback = ent->callback; 840 context = ent->context; 841 err = ent->ret; 842 if (!err) { 843 err = mlx5_copy_from_msg(ent->uout, 844 ent->out, 845 ent->uout_size); 846 err = err ? err : mlx5_cmd_check(dev, 847 ent->in->first.data, 848 ent->uout); 849 } 850 851 mlx5_free_cmd_msg(dev, ent->out); 852 free_msg(dev, ent->in); 853 854 err = err ? err : ent->status; 855 free_cmd(ent); 856 callback(err, context); 857 } else { 858 complete(&ent->done); 859 } 860 up(sem); 861} 862 863static void cmd_work_handler(struct work_struct *work) 864{ 865 struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work); 866 struct mlx5_cmd *cmd = ent->cmd; 867 struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); 868 unsigned long cb_timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); 869 struct mlx5_cmd_layout *lay; 870 struct semaphore *sem; 871 bool poll_cmd = ent->polling; 872 873 sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem; 874 down(sem); 875 876 if (alloc_ent(ent) < 0) { 877 complete_command(ent); 878 return; 879 } 880 881 ent->token = alloc_token(cmd); 882 lay = get_inst(cmd, ent->idx); 883 ent->lay = lay; 884 memset(lay, 0, sizeof(*lay)); 885 memcpy(lay->in, ent->in->first.data, sizeof(lay->in)); 886 ent->op = be32_to_cpu(lay->in[0]) >> 16; 887 if (ent->in->numpages != 0) 888 lay->in_ptr = cpu_to_be64(mlx5_fwp_get_dma(ent->in, 0)); 889 if (ent->out->numpages != 0) 890 lay->out_ptr = cpu_to_be64(mlx5_fwp_get_dma(ent->out, 0)); 891 lay->inlen = cpu_to_be32(ent->uin_size); 892 lay->outlen = cpu_to_be32(ent->uout_size); 893 lay->type = MLX5_PCI_CMD_XPORT; 894 lay->token = ent->token; 895 lay->status_own = CMD_OWNER_HW; 896 set_signature(ent, !cmd->checksum_disabled); 897 dump_command(dev, ent, 1); 898 ent->ts1 = ktime_get_ns(); 899 ent->busy = 0; 900 if (ent->callback) 901 schedule_delayed_work(&ent->cb_timeout_work, cb_timeout); 902 903 /* ring doorbell after the descriptor is valid */ 904 mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx); 905 /* make sure data is written to RAM */ 906 mlx5_fwp_flush(cmd->cmd_page); 907 iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell); 908 mmiowb(); 909 910 /* if not in polling don't use ent after this point */ 911 if (poll_cmd) { 912 poll_timeout(ent); 913 /* make sure we read the descriptor after ownership is SW */ 914 mlx5_cmd_comp_handler(dev, 1U << ent->idx, MLX5_CMD_MODE_POLLING); 915 } 916} 917 918static const char *deliv_status_to_str(u8 status) 919{ 920 switch (status) { 921 case MLX5_CMD_DELIVERY_STAT_OK: 922 return "no errors"; 923 case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: 924 return "signature error"; 925 case MLX5_CMD_DELIVERY_STAT_TOK_ERR: 926 return "token error"; 927 case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: 928 return "bad block number"; 929 case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: 930 return "output pointer not aligned to block size"; 931 case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: 932 return "input pointer not aligned to block size"; 933 case MLX5_CMD_DELIVERY_STAT_FW_ERR: 934 return "firmware internal error"; 935 case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: 936 return "command input length error"; 937 case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: 938 return "command output length error"; 939 case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: 940 return "reserved fields not cleared"; 941 case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: 942 return "bad command descriptor type"; 943 default: 944 return "unknown status code"; 945 } 946} 947 948static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent) 949{ 950 int timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); 951 int err; 952 953 if (ent->polling) { 954 wait_for_completion(&ent->done); 955 } else if (!wait_for_completion_timeout(&ent->done, timeout)) { 956 ent->ret = -ETIMEDOUT; 957 mlx5_cmd_comp_handler(dev, 1UL << ent->idx, MLX5_CMD_MODE_EVENTS); 958 } 959 960 err = ent->ret; 961 962 if (err == -ETIMEDOUT) { 963 mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", 964 mlx5_command_str(msg_to_opcode(ent->in)), 965 msg_to_opcode(ent->in)); 966 } 967 mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", 968 err, deliv_status_to_str(ent->status), ent->status); 969 970 return err; 971} 972 973/* Notes: 974 * 1. Callback functions may not sleep 975 * 2. page queue commands do not support asynchrous completion 976 */ 977static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, 978 int uin_size, 979 struct mlx5_cmd_msg *out, void *uout, int uout_size, 980 mlx5_cmd_cbk_t callback, 981 void *context, int page_queue, u8 *status, 982 bool force_polling) 983{ 984 struct mlx5_cmd *cmd = &dev->cmd; 985 struct mlx5_cmd_work_ent *ent; 986 struct mlx5_cmd_stats *stats; 987 int err = 0; 988 s64 ds; 989 u16 op; 990 991 if (callback && page_queue) 992 return -EINVAL; 993 994 ent = alloc_cmd(cmd, in, uin_size, out, uout, uout_size, callback, 995 context, page_queue); 996 if (IS_ERR(ent)) 997 return PTR_ERR(ent); 998 999 ent->polling = force_polling || (cmd->mode == MLX5_CMD_MODE_POLLING); 1000 1001 if (!callback) 1002 init_completion(&ent->done); 1003 1004 INIT_DELAYED_WORK(&ent->cb_timeout_work, cb_timeout_handler); 1005 INIT_WORK(&ent->work, cmd_work_handler); 1006 if (page_queue) { 1007 cmd_work_handler(&ent->work); 1008 } else if (!queue_work(dev->priv.health.wq_cmd, &ent->work)) { 1009 mlx5_core_warn(dev, "failed to queue work\n"); 1010 err = -ENOMEM; 1011 goto out_free; 1012 } 1013 1014 if (callback) 1015 goto out; 1016 1017 err = wait_func(dev, ent); 1018 if (err == -ETIMEDOUT) 1019 goto out; 1020 1021 ds = ent->ts2 - ent->ts1; 1022 op = MLX5_GET(mbox_in, in->first.data, opcode); 1023 if (op < ARRAY_SIZE(cmd->stats)) { 1024 stats = &cmd->stats[op]; 1025 spin_lock_irq(&stats->lock); 1026 stats->sum += ds; 1027 ++stats->n; 1028 spin_unlock_irq(&stats->lock); 1029 } 1030 mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME, 1031 "fw exec time for %s is %lld nsec\n", 1032 mlx5_command_str(op), (long long)ds); 1033 *status = ent->status; 1034 free_cmd(ent); 1035 1036 return err; 1037 1038out_free: 1039 free_cmd(ent); 1040out: 1041 return err; 1042} 1043 1044static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, size_t size) 1045{ 1046 size_t delta; 1047 size_t i; 1048 1049 if (to == NULL || from == NULL) 1050 return (-ENOMEM); 1051 1052 delta = min_t(size_t, size, sizeof(to->first.data)); 1053 memcpy(to->first.data, from, delta); 1054 from = (char *)from + delta; 1055 size -= delta; 1056 1057 for (i = 0; size != 0; i++) { 1058 struct mlx5_cmd_prot_block *block; 1059 1060 block = mlx5_fwp_get_virt(to, i * MLX5_CMD_MBOX_SIZE); 1061 1062 delta = min_t(size_t, size, MLX5_CMD_DATA_BLOCK_SIZE); 1063 memcpy(block->data, from, delta); 1064 from = (char *)from + delta; 1065 size -= delta; 1066 } 1067 return (0); 1068} 1069 1070static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size) 1071{ 1072 size_t delta; 1073 size_t i; 1074 1075 if (to == NULL || from == NULL) 1076 return (-ENOMEM); 1077 1078 delta = min_t(size_t, size, sizeof(from->first.data)); 1079 memcpy(to, from->first.data, delta); 1080 to = (char *)to + delta; 1081 size -= delta; 1082 1083 for (i = 0; size != 0; i++) { 1084 struct mlx5_cmd_prot_block *block; 1085 1086 block = mlx5_fwp_get_virt(from, i * MLX5_CMD_MBOX_SIZE); 1087 1088 delta = min_t(size_t, size, MLX5_CMD_DATA_BLOCK_SIZE); 1089 memcpy(to, block->data, delta); 1090 to = (char *)to + delta; 1091 size -= delta; 1092 } 1093 return (0); 1094} 1095 1096static struct mlx5_cmd_msg * 1097mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, gfp_t flags, size_t size) 1098{ 1099 struct mlx5_cmd_msg *msg; 1100 size_t blen; 1101 size_t n; 1102 size_t i; 1103 1104 blen = size - min_t(size_t, sizeof(msg->first.data), size); 1105 n = howmany(blen, MLX5_CMD_DATA_BLOCK_SIZE); 1106 1107 msg = mlx5_fwp_alloc(dev, flags, howmany(n, MLX5_NUM_CMDS_IN_ADAPTER_PAGE)); 1108 if (msg == NULL) 1109 return (ERR_PTR(-ENOMEM)); 1110 1111 for (i = 0; i != n; i++) { 1112 struct mlx5_cmd_prot_block *block; 1113 1114 block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); 1115 1116 if (i != (n - 1)) { 1117 memset(block, 0, MLX5_CMD_MBOX_SIZE); 1118 1119 u64 dma = mlx5_fwp_get_dma(msg, (i + 1) * MLX5_CMD_MBOX_SIZE); 1120 block->next = cpu_to_be64(dma); 1121 } else { 1122 /* Zero the rest of the page to satisfy KMSAN. */ 1123 memset(block, 0, MLX5_ADAPTER_PAGE_SIZE - 1124 (i % MLX5_NUM_CMDS_IN_ADAPTER_PAGE) * 1125 MLX5_CMD_MBOX_SIZE); 1126 } 1127 block->block_num = cpu_to_be32(i); 1128 } 1129 1130 /* make sure initial data is written to RAM */ 1131 mlx5_fwp_flush(msg); 1132 1133 return (msg); 1134} 1135 1136static void 1137mlx5_free_cmd_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) 1138{ 1139 1140 mlx5_fwp_free(msg); 1141} 1142 1143static void clean_debug_files(struct mlx5_core_dev *dev) 1144{ 1145} 1146 1147 1148static void mlx5_cmd_change_mod(struct mlx5_core_dev *dev, int mode) 1149{ 1150 struct mlx5_cmd *cmd = &dev->cmd; 1151 int i; 1152 1153 if (cmd->mode == mode) 1154 return; 1155 1156 for (i = 0; i < cmd->max_reg_cmds; i++) 1157 down(&cmd->sem); 1158 1159 down(&cmd->pages_sem); 1160 cmd->mode = mode; 1161 1162 up(&cmd->pages_sem); 1163 for (i = 0; i < cmd->max_reg_cmds; i++) 1164 up(&cmd->sem); 1165} 1166 1167void mlx5_cmd_use_events(struct mlx5_core_dev *dev) 1168{ 1169 mlx5_cmd_change_mod(dev, MLX5_CMD_MODE_EVENTS); 1170} 1171 1172void mlx5_cmd_use_polling(struct mlx5_core_dev *dev) 1173{ 1174 mlx5_cmd_change_mod(dev, MLX5_CMD_MODE_POLLING); 1175} 1176 1177static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) 1178{ 1179 unsigned long flags; 1180 1181 if (msg->cache) { 1182 spin_lock_irqsave(&msg->cache->lock, flags); 1183 list_add_tail(&msg->list, &msg->cache->head); 1184 spin_unlock_irqrestore(&msg->cache->lock, flags); 1185 } else { 1186 mlx5_free_cmd_msg(dev, msg); 1187 } 1188} 1189 1190void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vector_flags, 1191 enum mlx5_cmd_mode cmd_mode) 1192{ 1193 struct mlx5_cmd *cmd = &dev->cmd; 1194 struct mlx5_cmd_work_ent *ent; 1195 bool triggered = (vector_flags & MLX5_TRIGGERED_CMD_COMP) ? 1 : 0; 1196 u32 vector = vector_flags; /* discard flags in the upper dword */ 1197 int i; 1198 1199 /* make sure data gets read from RAM */ 1200 mlx5_fwp_invalidate(cmd->cmd_page); 1201 1202 while (vector != 0) { 1203 i = ffs(vector) - 1; 1204 vector &= ~(1U << i); 1205 /* check command mode */ 1206 if (cmd->ent_mode[i] != cmd_mode) 1207 continue; 1208 ent = cmd->ent_arr[i]; 1209 /* check if command was already handled */ 1210 if (ent == NULL) 1211 continue; 1212 if (ent->callback) 1213 cancel_delayed_work(&ent->cb_timeout_work); 1214 ent->ts2 = ktime_get_ns(); 1215 memcpy(ent->out->first.data, ent->lay->out, 1216 sizeof(ent->lay->out)); 1217 /* make sure data gets read from RAM */ 1218 mlx5_fwp_invalidate(ent->out); 1219 dump_command(dev, ent, 0); 1220 if (!ent->ret) { 1221 if (!cmd->checksum_disabled) 1222 ent->ret = verify_signature(ent); 1223 else 1224 ent->ret = 0; 1225 1226 if (triggered) 1227 ent->status = MLX5_DRIVER_STATUS_ABORTED; 1228 else 1229 ent->status = ent->lay->status_own >> 1; 1230 1231 mlx5_core_dbg(dev, 1232 "FW command ret 0x%x, status %s(0x%x)\n", 1233 ent->ret, 1234 deliv_status_to_str(ent->status), 1235 ent->status); 1236 } 1237 free_ent(cmd, ent->idx); 1238 complete_command(ent); 1239 } 1240} 1241EXPORT_SYMBOL(mlx5_cmd_comp_handler); 1242 1243static int status_to_err(u8 status) 1244{ 1245 return status ? -EIO : 0; /* TBD more meaningful codes */ 1246} 1247 1248static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, 1249 gfp_t gfp) 1250{ 1251 struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM); 1252 struct mlx5_cmd *cmd = &dev->cmd; 1253 struct cache_ent *ent = NULL; 1254 1255 if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE) 1256 ent = &cmd->cache.large; 1257 else if (in_size > 16 && in_size <= MED_LIST_SIZE) 1258 ent = &cmd->cache.med; 1259 1260 if (ent) { 1261 spin_lock_irq(&ent->lock); 1262 if (!list_empty(&ent->head)) { 1263 msg = list_entry(ent->head.next, struct mlx5_cmd_msg, 1264 list); 1265 list_del(&msg->list); 1266 } 1267 spin_unlock_irq(&ent->lock); 1268 } 1269 1270 if (IS_ERR(msg)) 1271 msg = mlx5_alloc_cmd_msg(dev, gfp, in_size); 1272 1273 return msg; 1274} 1275 1276static int is_manage_pages(void *in) 1277{ 1278 return MLX5_GET(mbox_in, in, opcode) == MLX5_CMD_OP_MANAGE_PAGES; 1279} 1280 1281static int cmd_exec_helper(struct mlx5_core_dev *dev, 1282 void *in, int in_size, 1283 void *out, int out_size, 1284 mlx5_cmd_cbk_t callback, void *context, 1285 bool force_polling) 1286{ 1287 struct mlx5_cmd_msg *inb; 1288 struct mlx5_cmd_msg *outb; 1289 int pages_queue; 1290 const gfp_t gfp = GFP_KERNEL; 1291 int err; 1292 u8 status = 0; 1293 u32 drv_synd; 1294 1295 if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { 1296 u16 opcode = MLX5_GET(mbox_in, in, opcode); 1297 err = mlx5_internal_err_ret_value(dev, opcode, &drv_synd, &status); 1298 MLX5_SET(mbox_out, out, status, status); 1299 MLX5_SET(mbox_out, out, syndrome, drv_synd); 1300 return err; 1301 } 1302 1303 pages_queue = is_manage_pages(in); 1304 1305 inb = alloc_msg(dev, in_size, gfp); 1306 if (IS_ERR(inb)) { 1307 err = PTR_ERR(inb); 1308 return err; 1309 } 1310 1311 err = mlx5_copy_to_msg(inb, in, in_size); 1312 if (err) { 1313 mlx5_core_warn(dev, "err %d\n", err); 1314 goto out_in; 1315 } 1316 1317 outb = mlx5_alloc_cmd_msg(dev, gfp, out_size); 1318 if (IS_ERR(outb)) { 1319 err = PTR_ERR(outb); 1320 goto out_in; 1321 } 1322 1323 err = mlx5_cmd_invoke(dev, inb, in_size, outb, out, out_size, callback, 1324 context, pages_queue, &status, force_polling); 1325 if (err) { 1326 if (err == -ETIMEDOUT) 1327 return err; 1328 goto out_out; 1329 } 1330 1331 mlx5_core_dbg(dev, "err %d, status %d\n", err, status); 1332 if (status) { 1333 err = status_to_err(status); 1334 goto out_out; 1335 } 1336 1337 if (callback) 1338 return err; 1339 1340 err = mlx5_copy_from_msg(out, outb, out_size); 1341 1342out_out: 1343 mlx5_free_cmd_msg(dev, outb); 1344 1345out_in: 1346 free_msg(dev, inb); 1347 return err; 1348} 1349 1350int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, 1351 int out_size) 1352{ 1353 int err; 1354 1355 err = cmd_exec_helper(dev, in, in_size, out, out_size, NULL, NULL, false); 1356 return err ? : mlx5_cmd_check(dev, in, out); 1357} 1358EXPORT_SYMBOL(mlx5_cmd_exec); 1359 1360void mlx5_cmd_init_async_ctx(struct mlx5_core_dev *dev, 1361 struct mlx5_async_ctx *ctx) 1362{ 1363 ctx->dev = dev; 1364 /* Starts at 1 to avoid doing wake_up if we are not cleaning up */ 1365 atomic_set(&ctx->num_inflight, 1); 1366 init_waitqueue_head(&ctx->wait); 1367} 1368EXPORT_SYMBOL(mlx5_cmd_init_async_ctx); 1369 1370/** 1371 * mlx5_cmd_cleanup_async_ctx - Clean up an async_ctx 1372 * @ctx: The ctx to clean 1373 * 1374 * Upon return all callbacks given to mlx5_cmd_exec_cb() have been called. The 1375 * caller must ensure that mlx5_cmd_exec_cb() is not called during or after 1376 * the call mlx5_cleanup_async_ctx(). 1377 */ 1378void mlx5_cmd_cleanup_async_ctx(struct mlx5_async_ctx *ctx) 1379{ 1380 atomic_dec(&ctx->num_inflight); 1381 wait_event(ctx->wait, atomic_read(&ctx->num_inflight) == 0); 1382} 1383EXPORT_SYMBOL(mlx5_cmd_cleanup_async_ctx); 1384 1385static void mlx5_cmd_exec_cb_handler(int status, void *_work) 1386{ 1387 struct mlx5_async_work *work = _work; 1388 struct mlx5_async_ctx *ctx = work->ctx; 1389 1390 work->user_callback(status, work); 1391 if (atomic_dec_and_test(&ctx->num_inflight)) 1392 wake_up(&ctx->wait); 1393} 1394 1395int mlx5_cmd_exec_cb(struct mlx5_async_ctx *ctx, void *in, int in_size, 1396 void *out, int out_size, mlx5_async_cbk_t callback, 1397 struct mlx5_async_work *work) 1398{ 1399 int ret; 1400 1401 work->ctx = ctx; 1402 work->user_callback = callback; 1403 if (WARN_ON(!atomic_inc_not_zero(&ctx->num_inflight))) 1404 return -EIO; 1405 ret = cmd_exec_helper(ctx->dev, in, in_size, out, out_size, 1406 mlx5_cmd_exec_cb_handler, work, false); 1407 if (ret && atomic_dec_and_test(&ctx->num_inflight)) 1408 wake_up(&ctx->wait); 1409 1410 return ret; 1411} 1412EXPORT_SYMBOL(mlx5_cmd_exec_cb); 1413 1414int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size, 1415 void *out, int out_size) 1416{ 1417 int err; 1418 1419 err = cmd_exec_helper(dev, in, in_size, out, out_size, NULL, NULL, true); 1420 return err ? : mlx5_cmd_check(dev, in, out); 1421} 1422EXPORT_SYMBOL(mlx5_cmd_exec_polling); 1423 1424static void destroy_msg_cache(struct mlx5_core_dev *dev) 1425{ 1426 struct mlx5_cmd *cmd = &dev->cmd; 1427 struct mlx5_cmd_msg *msg; 1428 struct mlx5_cmd_msg *n; 1429 1430 list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) { 1431 list_del(&msg->list); 1432 mlx5_free_cmd_msg(dev, msg); 1433 } 1434 1435 list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) { 1436 list_del(&msg->list); 1437 mlx5_free_cmd_msg(dev, msg); 1438 } 1439} 1440 1441static int create_msg_cache(struct mlx5_core_dev *dev) 1442{ 1443 struct mlx5_cmd *cmd = &dev->cmd; 1444 struct mlx5_cmd_msg *msg; 1445 int err; 1446 int i; 1447 1448 spin_lock_init(&cmd->cache.large.lock); 1449 INIT_LIST_HEAD(&cmd->cache.large.head); 1450 spin_lock_init(&cmd->cache.med.lock); 1451 INIT_LIST_HEAD(&cmd->cache.med.head); 1452 1453 for (i = 0; i < NUM_LONG_LISTS; i++) { 1454 msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE); 1455 if (IS_ERR(msg)) { 1456 err = PTR_ERR(msg); 1457 goto ex_err; 1458 } 1459 msg->cache = &cmd->cache.large; 1460 list_add_tail(&msg->list, &cmd->cache.large.head); 1461 } 1462 1463 for (i = 0; i < NUM_MED_LISTS; i++) { 1464 msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE); 1465 if (IS_ERR(msg)) { 1466 err = PTR_ERR(msg); 1467 goto ex_err; 1468 } 1469 msg->cache = &cmd->cache.med; 1470 list_add_tail(&msg->list, &cmd->cache.med.head); 1471 } 1472 1473 return 0; 1474 1475ex_err: 1476 destroy_msg_cache(dev); 1477 return err; 1478} 1479 1480static int 1481alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) 1482{ 1483 int err; 1484 1485 sx_init(&cmd->dma_sx, "MLX5-DMA-SX"); 1486 mtx_init(&cmd->dma_mtx, "MLX5-DMA-MTX", NULL, MTX_DEF); 1487 cv_init(&cmd->dma_cv, "MLX5-DMA-CV"); 1488 1489 /* 1490 * Create global DMA descriptor tag for allocating 1491 * 4K firmware pages: 1492 */ 1493 err = -bus_dma_tag_create( 1494 bus_get_dma_tag(dev->pdev->dev.bsddev), 1495 MLX5_ADAPTER_PAGE_SIZE, /* alignment */ 1496 0, /* no boundary */ 1497 BUS_SPACE_MAXADDR, /* lowaddr */ 1498 BUS_SPACE_MAXADDR, /* highaddr */ 1499 NULL, NULL, /* filter, filterarg */ 1500 MLX5_ADAPTER_PAGE_SIZE, /* maxsize */ 1501 1, /* nsegments */ 1502 MLX5_ADAPTER_PAGE_SIZE, /* maxsegsize */ 1503 0, /* flags */ 1504 NULL, NULL, /* lockfunc, lockfuncarg */ 1505 &cmd->dma_tag); 1506 if (err != 0) 1507 goto failure_destroy_sx; 1508 1509 cmd->cmd_page = mlx5_fwp_alloc(dev, GFP_KERNEL, 1); 1510 if (cmd->cmd_page == NULL) { 1511 err = -ENOMEM; 1512 goto failure_alloc_page; 1513 } 1514 cmd->dma = mlx5_fwp_get_dma(cmd->cmd_page, 0); 1515 cmd->cmd_buf = mlx5_fwp_get_virt(cmd->cmd_page, 0); 1516 memset(cmd->cmd_buf, 0, MLX5_ADAPTER_PAGE_SIZE); 1517 return (0); 1518 1519failure_alloc_page: 1520 bus_dma_tag_destroy(cmd->dma_tag); 1521 1522failure_destroy_sx: 1523 cv_destroy(&cmd->dma_cv); 1524 mtx_destroy(&cmd->dma_mtx); 1525 sx_destroy(&cmd->dma_sx); 1526 return (err); 1527} 1528 1529static void 1530free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) 1531{ 1532 1533 mlx5_fwp_free(cmd->cmd_page); 1534 bus_dma_tag_destroy(cmd->dma_tag); 1535 cv_destroy(&cmd->dma_cv); 1536 mtx_destroy(&cmd->dma_mtx); 1537 sx_destroy(&cmd->dma_sx); 1538} 1539 1540int mlx5_cmd_init(struct mlx5_core_dev *dev) 1541{ 1542 struct mlx5_cmd *cmd = &dev->cmd; 1543 u32 cmd_h, cmd_l; 1544 u16 cmd_if_rev; 1545 int err; 1546 int i; 1547 1548 memset(cmd, 0, sizeof(*cmd)); 1549 cmd_if_rev = cmdif_rev_get(dev); 1550 if (cmd_if_rev != CMD_IF_REV) { 1551 mlx5_core_err(dev, 1552 "Driver cmdif rev(%d) differs from firmware's(%d)\n", 1553 CMD_IF_REV, cmd_if_rev); 1554 return -EINVAL; 1555 } 1556 1557 err = alloc_cmd_page(dev, cmd); 1558 if (err) 1559 goto err_free_pool; 1560 1561 cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff; 1562 cmd->log_sz = cmd_l >> 4 & 0xf; 1563 cmd->log_stride = cmd_l & 0xf; 1564 if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) { 1565 mlx5_core_err(dev, 1566 "firmware reports too many outstanding commands %d\n", 1567 1 << cmd->log_sz); 1568 err = -EINVAL; 1569 goto err_free_page; 1570 } 1571 1572 if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) { 1573 mlx5_core_err(dev, 1574 "command queue size overflow\n"); 1575 err = -EINVAL; 1576 goto err_free_page; 1577 } 1578 1579 cmd->checksum_disabled = 1; 1580 cmd->max_reg_cmds = (1 << cmd->log_sz) - 1; 1581 cmd->bitmask = (1 << cmd->max_reg_cmds) - 1; 1582 1583 cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16; 1584 if (cmd->cmdif_rev > CMD_IF_REV) { 1585 mlx5_core_err(dev, 1586 "driver does not support command interface version. driver %d, firmware %d\n", 1587 CMD_IF_REV, cmd->cmdif_rev); 1588 err = -ENOTSUPP; 1589 goto err_free_page; 1590 } 1591 1592 spin_lock_init(&cmd->alloc_lock); 1593 spin_lock_init(&cmd->token_lock); 1594 for (i = 0; i < ARRAY_SIZE(cmd->stats); i++) 1595 spin_lock_init(&cmd->stats[i].lock); 1596 1597 sema_init(&cmd->sem, cmd->max_reg_cmds); 1598 sema_init(&cmd->pages_sem, 1); 1599 1600 cmd_h = (u32)((u64)(cmd->dma) >> 32); 1601 cmd_l = (u32)(cmd->dma); 1602 if (cmd_l & 0xfff) { 1603 mlx5_core_err(dev, "invalid command queue address\n"); 1604 err = -ENOMEM; 1605 goto err_free_page; 1606 } 1607 1608 iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h); 1609 iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz); 1610 1611 /* Make sure firmware sees the complete address before we proceed */ 1612 wmb(); 1613 1614 mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma)); 1615 1616 cmd->mode = MLX5_CMD_MODE_POLLING; 1617 1618 err = create_msg_cache(dev); 1619 if (err) { 1620 mlx5_core_err(dev, "failed to create command cache\n"); 1621 goto err_free_page; 1622 } 1623 return 0; 1624 1625err_free_page: 1626 free_cmd_page(dev, cmd); 1627 1628err_free_pool: 1629 return err; 1630} 1631EXPORT_SYMBOL(mlx5_cmd_init); 1632 1633void mlx5_cmd_cleanup(struct mlx5_core_dev *dev) 1634{ 1635 struct mlx5_cmd *cmd = &dev->cmd; 1636 1637 clean_debug_files(dev); 1638 flush_workqueue(dev->priv.health.wq_cmd); 1639 destroy_msg_cache(dev); 1640 free_cmd_page(dev, cmd); 1641} 1642EXPORT_SYMBOL(mlx5_cmd_cleanup); 1643 1644int mlx5_cmd_query_cong_counter(struct mlx5_core_dev *dev, 1645 bool reset, void *out, int out_size) 1646{ 1647 u32 in[MLX5_ST_SZ_DW(query_cong_statistics_in)] = { }; 1648 1649 MLX5_SET(query_cong_statistics_in, in, opcode, 1650 MLX5_CMD_OP_QUERY_CONG_STATISTICS); 1651 MLX5_SET(query_cong_statistics_in, in, clear, reset); 1652 return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); 1653} 1654EXPORT_SYMBOL(mlx5_cmd_query_cong_counter); 1655 1656int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point, 1657 void *out, int out_size) 1658{ 1659 u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = { }; 1660 1661 MLX5_SET(query_cong_params_in, in, opcode, 1662 MLX5_CMD_OP_QUERY_CONG_PARAMS); 1663 MLX5_SET(query_cong_params_in, in, cong_protocol, cong_point); 1664 1665 return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); 1666} 1667EXPORT_SYMBOL(mlx5_cmd_query_cong_params); 1668 1669int mlx5_cmd_modify_cong_params(struct mlx5_core_dev *dev, 1670 void *in, int in_size) 1671{ 1672 u32 out[MLX5_ST_SZ_DW(modify_cong_params_out)] = { }; 1673 1674 return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out)); 1675} 1676EXPORT_SYMBOL(mlx5_cmd_modify_cong_params); 1677 1678int mlx5_cmd_query_cong_status(struct mlx5_core_dev *dev, int cong_point, 1679 int prio, void *out, int out_size) 1680{ 1681 u32 in[MLX5_ST_SZ_DW(query_cong_status_in)] = { }; 1682 1683 MLX5_SET(query_cong_status_in, in, opcode, 1684 MLX5_CMD_OP_QUERY_CONG_STATUS); 1685 MLX5_SET(query_cong_status_in, in, priority, prio); 1686 MLX5_SET(query_cong_status_in, in, cong_protocol, cong_point); 1687 1688 return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); 1689} 1690EXPORT_SYMBOL(mlx5_cmd_query_cong_status); 1691 1692int mlx5_cmd_modify_cong_status(struct mlx5_core_dev *dev, 1693 void *in, int in_size) 1694{ 1695 u32 out[MLX5_ST_SZ_DW(modify_cong_status_out)] = { }; 1696 1697 return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out)); 1698} 1699EXPORT_SYMBOL(mlx5_cmd_modify_cong_status); 1700