1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved. 4 */ 5 6 #include "ena_com.h" 7 8 /*****************************************************************************/ 9 /*****************************************************************************/ 10 11 /* Timeout in micro-sec */ 12 #define ADMIN_CMD_TIMEOUT_US (3000000) 13 14 #define ENA_ASYNC_QUEUE_DEPTH 16 15 #define ENA_ADMIN_QUEUE_DEPTH 32 16 17 18 #define ENA_CTRL_MAJOR 0 19 #define ENA_CTRL_MINOR 0 20 #define ENA_CTRL_SUB_MINOR 1 21 22 #define MIN_ENA_CTRL_VER \ 23 (((ENA_CTRL_MAJOR) << \ 24 (ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT)) | \ 25 ((ENA_CTRL_MINOR) << \ 26 (ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT)) | \ 27 (ENA_CTRL_SUB_MINOR)) 28 29 #define ENA_DMA_ADDR_TO_UINT32_LOW(x) ((u32)((u64)(x))) 30 #define ENA_DMA_ADDR_TO_UINT32_HIGH(x) ((u32)(((u64)(x)) >> 32)) 31 32 #define ENA_MMIO_READ_TIMEOUT 0xFFFFFFFF 33 34 #define ENA_COM_BOUNCE_BUFFER_CNTRL_CNT 4 35 36 #define ENA_REGS_ADMIN_INTR_MASK 1 37 38 #define ENA_MAX_BACKOFF_DELAY_EXP 16U 39 40 #define ENA_MIN_ADMIN_POLL_US 100 41 42 #define ENA_MAX_ADMIN_POLL_US 5000 43 44 /*****************************************************************************/ 45 /*****************************************************************************/ 46 /*****************************************************************************/ 47 48 enum ena_cmd_status { 49 ENA_CMD_SUBMITTED, 50 ENA_CMD_COMPLETED, 51 /* Abort - canceled by the driver */ 52 ENA_CMD_ABORTED, 53 }; 54 55 struct ena_comp_ctx { 56 struct completion wait_event; 57 struct ena_admin_acq_entry *user_cqe; 58 u32 comp_size; 59 enum ena_cmd_status status; 60 /* status from the device */ 61 u8 comp_status; 62 u8 cmd_opcode; 63 bool occupied; 64 }; 65 66 struct ena_com_stats_ctx { 67 struct ena_admin_aq_get_stats_cmd get_cmd; 68 struct ena_admin_acq_get_stats_resp get_resp; 69 }; 70 71 static int ena_com_mem_addr_set(struct ena_com_dev *ena_dev, 72 struct ena_common_mem_addr *ena_addr, 73 dma_addr_t addr) 74 { 75 if ((addr & GENMASK_ULL(ena_dev->dma_addr_bits - 1, 0)) != addr) { 76 netdev_err(ena_dev->net_device, 77 "DMA address has more bits that the device supports\n"); 78 return -EINVAL; 79 } 80 81 ena_addr->mem_addr_low = lower_32_bits(addr); 82 ena_addr->mem_addr_high = (u16)upper_32_bits(addr); 83 84 return 0; 85 } 86 87 static int ena_com_admin_init_sq(struct ena_com_admin_queue *admin_queue) 88 { 89 struct ena_com_dev *ena_dev = admin_queue->ena_dev; 90 struct ena_com_admin_sq *sq = &admin_queue->sq; 91 u16 size = ADMIN_SQ_SIZE(admin_queue->q_depth); 92 93 sq->entries = dma_alloc_coherent(admin_queue->q_dmadev, size, &sq->dma_addr, GFP_KERNEL); 94 95 if (!sq->entries) { 96 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 97 return -ENOMEM; 98 } 99 100 sq->head = 0; 101 sq->tail = 0; 102 sq->phase = 1; 103 104 sq->db_addr = NULL; 105 106 return 0; 107 } 108 109 static int ena_com_admin_init_cq(struct ena_com_admin_queue *admin_queue) 110 { 111 struct ena_com_dev *ena_dev = admin_queue->ena_dev; 112 struct ena_com_admin_cq *cq = &admin_queue->cq; 113 u16 size = ADMIN_CQ_SIZE(admin_queue->q_depth); 114 115 cq->entries = dma_alloc_coherent(admin_queue->q_dmadev, size, &cq->dma_addr, GFP_KERNEL); 116 117 if (!cq->entries) { 118 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 119 return -ENOMEM; 120 } 121 122 cq->head = 0; 123 cq->phase = 1; 124 125 return 0; 126 } 127 128 static int ena_com_admin_init_aenq(struct ena_com_dev *ena_dev, 129 struct ena_aenq_handlers *aenq_handlers) 130 { 131 struct ena_com_aenq *aenq = &ena_dev->aenq; 132 u32 addr_low, addr_high, aenq_caps; 133 u16 size; 134 135 ena_dev->aenq.q_depth = ENA_ASYNC_QUEUE_DEPTH; 136 size = ADMIN_AENQ_SIZE(ENA_ASYNC_QUEUE_DEPTH); 137 aenq->entries = dma_alloc_coherent(ena_dev->dmadev, size, &aenq->dma_addr, GFP_KERNEL); 138 139 if (!aenq->entries) { 140 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 141 return -ENOMEM; 142 } 143 144 aenq->head = aenq->q_depth; 145 aenq->phase = 1; 146 147 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(aenq->dma_addr); 148 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(aenq->dma_addr); 149 150 writel(addr_low, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_LO_OFF); 151 writel(addr_high, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_HI_OFF); 152 153 aenq_caps = 0; 154 aenq_caps |= ena_dev->aenq.q_depth & ENA_REGS_AENQ_CAPS_AENQ_DEPTH_MASK; 155 aenq_caps |= 156 (sizeof(struct ena_admin_aenq_entry) << ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_SHIFT) & 157 ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_MASK; 158 writel(aenq_caps, ena_dev->reg_bar + ENA_REGS_AENQ_CAPS_OFF); 159 160 if (unlikely(!aenq_handlers)) { 161 netdev_err(ena_dev->net_device, "AENQ handlers pointer is NULL\n"); 162 return -EINVAL; 163 } 164 165 aenq->aenq_handlers = aenq_handlers; 166 167 return 0; 168 } 169 170 static void comp_ctxt_release(struct ena_com_admin_queue *queue, 171 struct ena_comp_ctx *comp_ctx) 172 { 173 comp_ctx->occupied = false; 174 atomic_dec(&queue->outstanding_cmds); 175 } 176 177 static struct ena_comp_ctx *get_comp_ctxt(struct ena_com_admin_queue *admin_queue, 178 u16 command_id, bool capture) 179 { 180 if (unlikely(command_id >= admin_queue->q_depth)) { 181 netdev_err(admin_queue->ena_dev->net_device, 182 "Command id is larger than the queue size. cmd_id: %u queue size %d\n", 183 command_id, admin_queue->q_depth); 184 return NULL; 185 } 186 187 if (unlikely(!admin_queue->comp_ctx)) { 188 netdev_err(admin_queue->ena_dev->net_device, "Completion context is NULL\n"); 189 return NULL; 190 } 191 192 if (unlikely(admin_queue->comp_ctx[command_id].occupied && capture)) { 193 netdev_err(admin_queue->ena_dev->net_device, "Completion context is occupied\n"); 194 return NULL; 195 } 196 197 if (capture) { 198 atomic_inc(&admin_queue->outstanding_cmds); 199 admin_queue->comp_ctx[command_id].occupied = true; 200 } 201 202 return &admin_queue->comp_ctx[command_id]; 203 } 204 205 static struct ena_comp_ctx *__ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue, 206 struct ena_admin_aq_entry *cmd, 207 size_t cmd_size_in_bytes, 208 struct ena_admin_acq_entry *comp, 209 size_t comp_size_in_bytes) 210 { 211 struct ena_comp_ctx *comp_ctx; 212 u16 tail_masked, cmd_id; 213 u16 queue_size_mask; 214 u16 cnt; 215 216 queue_size_mask = admin_queue->q_depth - 1; 217 218 tail_masked = admin_queue->sq.tail & queue_size_mask; 219 220 /* In case of queue FULL */ 221 cnt = (u16)atomic_read(&admin_queue->outstanding_cmds); 222 if (cnt >= admin_queue->q_depth) { 223 netdev_dbg(admin_queue->ena_dev->net_device, "Admin queue is full.\n"); 224 admin_queue->stats.out_of_space++; 225 return ERR_PTR(-ENOSPC); 226 } 227 228 cmd_id = admin_queue->curr_cmd_id; 229 230 cmd->aq_common_descriptor.flags |= admin_queue->sq.phase & 231 ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK; 232 233 cmd->aq_common_descriptor.command_id |= cmd_id & 234 ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK; 235 236 comp_ctx = get_comp_ctxt(admin_queue, cmd_id, true); 237 if (unlikely(!comp_ctx)) 238 return ERR_PTR(-EINVAL); 239 240 comp_ctx->status = ENA_CMD_SUBMITTED; 241 comp_ctx->comp_size = (u32)comp_size_in_bytes; 242 comp_ctx->user_cqe = comp; 243 comp_ctx->cmd_opcode = cmd->aq_common_descriptor.opcode; 244 245 reinit_completion(&comp_ctx->wait_event); 246 247 memcpy(&admin_queue->sq.entries[tail_masked], cmd, cmd_size_in_bytes); 248 249 admin_queue->curr_cmd_id = (admin_queue->curr_cmd_id + 1) & 250 queue_size_mask; 251 252 admin_queue->sq.tail++; 253 admin_queue->stats.submitted_cmd++; 254 255 if (unlikely((admin_queue->sq.tail & queue_size_mask) == 0)) 256 admin_queue->sq.phase = !admin_queue->sq.phase; 257 258 writel(admin_queue->sq.tail, admin_queue->sq.db_addr); 259 260 return comp_ctx; 261 } 262 263 static int ena_com_init_comp_ctxt(struct ena_com_admin_queue *admin_queue) 264 { 265 struct ena_com_dev *ena_dev = admin_queue->ena_dev; 266 size_t size = admin_queue->q_depth * sizeof(struct ena_comp_ctx); 267 struct ena_comp_ctx *comp_ctx; 268 u16 i; 269 270 admin_queue->comp_ctx = devm_kzalloc(admin_queue->q_dmadev, size, GFP_KERNEL); 271 if (unlikely(!admin_queue->comp_ctx)) { 272 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 273 return -ENOMEM; 274 } 275 276 for (i = 0; i < admin_queue->q_depth; i++) { 277 comp_ctx = get_comp_ctxt(admin_queue, i, false); 278 if (comp_ctx) 279 init_completion(&comp_ctx->wait_event); 280 } 281 282 return 0; 283 } 284 285 static struct ena_comp_ctx *ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue, 286 struct ena_admin_aq_entry *cmd, 287 size_t cmd_size_in_bytes, 288 struct ena_admin_acq_entry *comp, 289 size_t comp_size_in_bytes) 290 { 291 unsigned long flags = 0; 292 struct ena_comp_ctx *comp_ctx; 293 294 spin_lock_irqsave(&admin_queue->q_lock, flags); 295 if (unlikely(!admin_queue->running_state)) { 296 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 297 return ERR_PTR(-ENODEV); 298 } 299 comp_ctx = __ena_com_submit_admin_cmd(admin_queue, cmd, 300 cmd_size_in_bytes, 301 comp, 302 comp_size_in_bytes); 303 if (IS_ERR(comp_ctx)) 304 admin_queue->running_state = false; 305 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 306 307 return comp_ctx; 308 } 309 310 static int ena_com_init_io_sq(struct ena_com_dev *ena_dev, 311 struct ena_com_create_io_ctx *ctx, 312 struct ena_com_io_sq *io_sq) 313 { 314 size_t size; 315 316 memset(&io_sq->desc_addr, 0x0, sizeof(io_sq->desc_addr)); 317 318 io_sq->dma_addr_bits = (u8)ena_dev->dma_addr_bits; 319 io_sq->desc_entry_size = 320 (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ? 321 sizeof(struct ena_eth_io_tx_desc) : 322 sizeof(struct ena_eth_io_rx_desc); 323 324 size = io_sq->desc_entry_size * io_sq->q_depth; 325 326 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) { 327 io_sq->desc_addr.virt_addr = 328 dma_alloc_coherent(ena_dev->dmadev, size, &io_sq->desc_addr.phys_addr, 329 GFP_KERNEL); 330 if (!io_sq->desc_addr.virt_addr) { 331 io_sq->desc_addr.virt_addr = 332 dma_alloc_coherent(ena_dev->dmadev, size, 333 &io_sq->desc_addr.phys_addr, GFP_KERNEL); 334 } 335 336 if (!io_sq->desc_addr.virt_addr) { 337 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 338 return -ENOMEM; 339 } 340 } 341 342 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) { 343 /* Allocate bounce buffers */ 344 io_sq->bounce_buf_ctrl.buffer_size = 345 ena_dev->llq_info.desc_list_entry_size; 346 io_sq->bounce_buf_ctrl.buffers_num = 347 ENA_COM_BOUNCE_BUFFER_CNTRL_CNT; 348 io_sq->bounce_buf_ctrl.next_to_use = 0; 349 350 size = (size_t)io_sq->bounce_buf_ctrl.buffer_size * 351 io_sq->bounce_buf_ctrl.buffers_num; 352 353 io_sq->bounce_buf_ctrl.base_buffer = devm_kzalloc(ena_dev->dmadev, size, GFP_KERNEL); 354 if (!io_sq->bounce_buf_ctrl.base_buffer) 355 io_sq->bounce_buf_ctrl.base_buffer = 356 devm_kzalloc(ena_dev->dmadev, size, GFP_KERNEL); 357 358 if (!io_sq->bounce_buf_ctrl.base_buffer) { 359 netdev_err(ena_dev->net_device, "Bounce buffer memory allocation failed\n"); 360 return -ENOMEM; 361 } 362 363 memcpy(&io_sq->llq_info, &ena_dev->llq_info, 364 sizeof(io_sq->llq_info)); 365 366 /* Initiate the first bounce buffer */ 367 io_sq->llq_buf_ctrl.curr_bounce_buf = 368 ena_com_get_next_bounce_buffer(&io_sq->bounce_buf_ctrl); 369 memset(io_sq->llq_buf_ctrl.curr_bounce_buf, 370 0x0, io_sq->llq_info.desc_list_entry_size); 371 io_sq->llq_buf_ctrl.descs_left_in_line = 372 io_sq->llq_info.descs_num_before_header; 373 io_sq->disable_meta_caching = 374 io_sq->llq_info.disable_meta_caching; 375 376 if (io_sq->llq_info.max_entries_in_tx_burst > 0) 377 io_sq->entries_in_tx_burst_left = 378 io_sq->llq_info.max_entries_in_tx_burst; 379 } 380 381 io_sq->tail = 0; 382 io_sq->next_to_comp = 0; 383 io_sq->phase = 1; 384 385 return 0; 386 } 387 388 static int ena_com_init_io_cq(struct ena_com_dev *ena_dev, 389 struct ena_com_create_io_ctx *ctx, 390 struct ena_com_io_cq *io_cq) 391 { 392 size_t size; 393 394 memset(&io_cq->cdesc_addr, 0x0, sizeof(io_cq->cdesc_addr)); 395 396 /* Use the basic completion descriptor for Rx */ 397 io_cq->cdesc_entry_size_in_bytes = 398 (io_cq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ? 399 sizeof(struct ena_eth_io_tx_cdesc) : 400 sizeof(struct ena_eth_io_rx_cdesc_base); 401 402 size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth; 403 404 io_cq->cdesc_addr.virt_addr = 405 dma_alloc_coherent(ena_dev->dmadev, size, &io_cq->cdesc_addr.phys_addr, GFP_KERNEL); 406 if (!io_cq->cdesc_addr.virt_addr) { 407 io_cq->cdesc_addr.virt_addr = 408 dma_alloc_coherent(ena_dev->dmadev, size, &io_cq->cdesc_addr.phys_addr, 409 GFP_KERNEL); 410 } 411 412 if (!io_cq->cdesc_addr.virt_addr) { 413 netdev_err(ena_dev->net_device, "Memory allocation failed\n"); 414 return -ENOMEM; 415 } 416 417 io_cq->phase = 1; 418 io_cq->head = 0; 419 420 return 0; 421 } 422 423 static void ena_com_handle_single_admin_completion(struct ena_com_admin_queue *admin_queue, 424 struct ena_admin_acq_entry *cqe) 425 { 426 struct ena_comp_ctx *comp_ctx; 427 u16 cmd_id; 428 429 cmd_id = cqe->acq_common_descriptor.command & 430 ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK; 431 432 comp_ctx = get_comp_ctxt(admin_queue, cmd_id, false); 433 if (unlikely(!comp_ctx)) { 434 netdev_err(admin_queue->ena_dev->net_device, 435 "comp_ctx is NULL. Changing the admin queue running state\n"); 436 admin_queue->running_state = false; 437 return; 438 } 439 440 comp_ctx->status = ENA_CMD_COMPLETED; 441 comp_ctx->comp_status = cqe->acq_common_descriptor.status; 442 443 if (comp_ctx->user_cqe) 444 memcpy(comp_ctx->user_cqe, (void *)cqe, comp_ctx->comp_size); 445 446 if (!admin_queue->polling) 447 complete(&comp_ctx->wait_event); 448 } 449 450 static void ena_com_handle_admin_completion(struct ena_com_admin_queue *admin_queue) 451 { 452 struct ena_admin_acq_entry *cqe = NULL; 453 u16 comp_num = 0; 454 u16 head_masked; 455 u8 phase; 456 457 head_masked = admin_queue->cq.head & (admin_queue->q_depth - 1); 458 phase = admin_queue->cq.phase; 459 460 cqe = &admin_queue->cq.entries[head_masked]; 461 462 /* Go over all the completions */ 463 while ((READ_ONCE(cqe->acq_common_descriptor.flags) & 464 ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) { 465 /* Do not read the rest of the completion entry before the 466 * phase bit was validated 467 */ 468 dma_rmb(); 469 ena_com_handle_single_admin_completion(admin_queue, cqe); 470 471 head_masked++; 472 comp_num++; 473 if (unlikely(head_masked == admin_queue->q_depth)) { 474 head_masked = 0; 475 phase = !phase; 476 } 477 478 cqe = &admin_queue->cq.entries[head_masked]; 479 } 480 481 admin_queue->cq.head += comp_num; 482 admin_queue->cq.phase = phase; 483 admin_queue->sq.head += comp_num; 484 admin_queue->stats.completed_cmd += comp_num; 485 } 486 487 static int ena_com_comp_status_to_errno(struct ena_com_admin_queue *admin_queue, 488 u8 comp_status) 489 { 490 if (unlikely(comp_status != 0)) 491 netdev_err(admin_queue->ena_dev->net_device, "Admin command failed[%u]\n", 492 comp_status); 493 494 switch (comp_status) { 495 case ENA_ADMIN_SUCCESS: 496 return 0; 497 case ENA_ADMIN_RESOURCE_ALLOCATION_FAILURE: 498 return -ENOMEM; 499 case ENA_ADMIN_UNSUPPORTED_OPCODE: 500 return -EOPNOTSUPP; 501 case ENA_ADMIN_BAD_OPCODE: 502 case ENA_ADMIN_MALFORMED_REQUEST: 503 case ENA_ADMIN_ILLEGAL_PARAMETER: 504 case ENA_ADMIN_UNKNOWN_ERROR: 505 return -EINVAL; 506 case ENA_ADMIN_RESOURCE_BUSY: 507 return -EAGAIN; 508 } 509 510 return -EINVAL; 511 } 512 513 static void ena_delay_exponential_backoff_us(u32 exp, u32 delay_us) 514 { 515 exp = min_t(u32, exp, ENA_MAX_BACKOFF_DELAY_EXP); 516 delay_us = max_t(u32, ENA_MIN_ADMIN_POLL_US, delay_us); 517 delay_us = min_t(u32, delay_us * (1U << exp), ENA_MAX_ADMIN_POLL_US); 518 usleep_range(delay_us, 2 * delay_us); 519 } 520 521 static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_ctx, 522 struct ena_com_admin_queue *admin_queue) 523 { 524 unsigned long flags = 0; 525 unsigned long timeout; 526 int ret; 527 u32 exp = 0; 528 529 timeout = jiffies + usecs_to_jiffies(admin_queue->completion_timeout); 530 531 while (1) { 532 spin_lock_irqsave(&admin_queue->q_lock, flags); 533 ena_com_handle_admin_completion(admin_queue); 534 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 535 536 if (comp_ctx->status != ENA_CMD_SUBMITTED) 537 break; 538 539 if (time_is_before_jiffies(timeout)) { 540 netdev_err(admin_queue->ena_dev->net_device, 541 "Wait for completion (polling) timeout\n"); 542 /* ENA didn't have any completion */ 543 spin_lock_irqsave(&admin_queue->q_lock, flags); 544 admin_queue->stats.no_completion++; 545 admin_queue->running_state = false; 546 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 547 548 ret = -ETIME; 549 goto err; 550 } 551 552 ena_delay_exponential_backoff_us(exp++, 553 admin_queue->ena_dev->ena_min_poll_delay_us); 554 } 555 556 if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) { 557 netdev_err(admin_queue->ena_dev->net_device, "Command was aborted\n"); 558 spin_lock_irqsave(&admin_queue->q_lock, flags); 559 admin_queue->stats.aborted_cmd++; 560 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 561 ret = -ENODEV; 562 goto err; 563 } 564 565 WARN(comp_ctx->status != ENA_CMD_COMPLETED, "Invalid comp status %d\n", comp_ctx->status); 566 567 ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status); 568 err: 569 comp_ctxt_release(admin_queue, comp_ctx); 570 return ret; 571 } 572 573 /* 574 * Set the LLQ configurations of the firmware 575 * 576 * The driver provides only the enabled feature values to the device, 577 * which in turn, checks if they are supported. 578 */ 579 static int ena_com_set_llq(struct ena_com_dev *ena_dev) 580 { 581 struct ena_com_admin_queue *admin_queue; 582 struct ena_admin_set_feat_cmd cmd; 583 struct ena_admin_set_feat_resp resp; 584 struct ena_com_llq_info *llq_info = &ena_dev->llq_info; 585 int ret; 586 587 memset(&cmd, 0x0, sizeof(cmd)); 588 admin_queue = &ena_dev->admin_queue; 589 590 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 591 cmd.feat_common.feature_id = ENA_ADMIN_LLQ; 592 593 cmd.u.llq.header_location_ctrl_enabled = llq_info->header_location_ctrl; 594 cmd.u.llq.entry_size_ctrl_enabled = llq_info->desc_list_entry_size_ctrl; 595 cmd.u.llq.desc_num_before_header_enabled = llq_info->descs_num_before_header; 596 cmd.u.llq.descriptors_stride_ctrl_enabled = llq_info->desc_stride_ctrl; 597 598 cmd.u.llq.accel_mode.u.set.enabled_flags = 599 BIT(ENA_ADMIN_DISABLE_META_CACHING) | 600 BIT(ENA_ADMIN_LIMIT_TX_BURST); 601 602 ret = ena_com_execute_admin_command(admin_queue, 603 (struct ena_admin_aq_entry *)&cmd, 604 sizeof(cmd), 605 (struct ena_admin_acq_entry *)&resp, 606 sizeof(resp)); 607 608 if (unlikely(ret)) 609 netdev_err(ena_dev->net_device, "Failed to set LLQ configurations: %d\n", ret); 610 611 return ret; 612 } 613 614 static int ena_com_config_llq_info(struct ena_com_dev *ena_dev, 615 struct ena_admin_feature_llq_desc *llq_features, 616 struct ena_llq_configurations *llq_default_cfg) 617 { 618 struct ena_com_llq_info *llq_info = &ena_dev->llq_info; 619 struct ena_admin_accel_mode_get llq_accel_mode_get; 620 u16 supported_feat; 621 int rc; 622 623 memset(llq_info, 0, sizeof(*llq_info)); 624 625 supported_feat = llq_features->header_location_ctrl_supported; 626 627 if (likely(supported_feat & llq_default_cfg->llq_header_location)) { 628 llq_info->header_location_ctrl = 629 llq_default_cfg->llq_header_location; 630 } else { 631 netdev_err(ena_dev->net_device, 632 "Invalid header location control, supported: 0x%x\n", supported_feat); 633 return -EINVAL; 634 } 635 636 if (likely(llq_info->header_location_ctrl == ENA_ADMIN_INLINE_HEADER)) { 637 supported_feat = llq_features->descriptors_stride_ctrl_supported; 638 if (likely(supported_feat & llq_default_cfg->llq_stride_ctrl)) { 639 llq_info->desc_stride_ctrl = llq_default_cfg->llq_stride_ctrl; 640 } else { 641 if (supported_feat & ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY) { 642 llq_info->desc_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY; 643 } else if (supported_feat & ENA_ADMIN_SINGLE_DESC_PER_ENTRY) { 644 llq_info->desc_stride_ctrl = ENA_ADMIN_SINGLE_DESC_PER_ENTRY; 645 } else { 646 netdev_err(ena_dev->net_device, 647 "Invalid desc_stride_ctrl, supported: 0x%x\n", 648 supported_feat); 649 return -EINVAL; 650 } 651 652 netdev_err(ena_dev->net_device, 653 "Default llq stride ctrl is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", 654 llq_default_cfg->llq_stride_ctrl, supported_feat, 655 llq_info->desc_stride_ctrl); 656 } 657 } else { 658 llq_info->desc_stride_ctrl = 0; 659 } 660 661 supported_feat = llq_features->entry_size_ctrl_supported; 662 if (likely(supported_feat & llq_default_cfg->llq_ring_entry_size)) { 663 llq_info->desc_list_entry_size_ctrl = llq_default_cfg->llq_ring_entry_size; 664 llq_info->desc_list_entry_size = llq_default_cfg->llq_ring_entry_size_value; 665 } else { 666 if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_128B) { 667 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_128B; 668 llq_info->desc_list_entry_size = 128; 669 } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_192B) { 670 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_192B; 671 llq_info->desc_list_entry_size = 192; 672 } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_256B) { 673 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_256B; 674 llq_info->desc_list_entry_size = 256; 675 } else { 676 netdev_err(ena_dev->net_device, 677 "Invalid entry_size_ctrl, supported: 0x%x\n", supported_feat); 678 return -EINVAL; 679 } 680 681 netdev_err(ena_dev->net_device, 682 "Default llq ring entry size is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", 683 llq_default_cfg->llq_ring_entry_size, supported_feat, 684 llq_info->desc_list_entry_size); 685 } 686 if (unlikely(llq_info->desc_list_entry_size & 0x7)) { 687 /* The desc list entry size should be whole multiply of 8 688 * This requirement comes from __iowrite64_copy() 689 */ 690 netdev_err(ena_dev->net_device, "Illegal entry size %d\n", 691 llq_info->desc_list_entry_size); 692 return -EINVAL; 693 } 694 695 if (llq_info->desc_stride_ctrl == ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY) 696 llq_info->descs_per_entry = llq_info->desc_list_entry_size / 697 sizeof(struct ena_eth_io_tx_desc); 698 else 699 llq_info->descs_per_entry = 1; 700 701 supported_feat = llq_features->desc_num_before_header_supported; 702 if (likely(supported_feat & llq_default_cfg->llq_num_decs_before_header)) { 703 llq_info->descs_num_before_header = llq_default_cfg->llq_num_decs_before_header; 704 } else { 705 if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2) { 706 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2; 707 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1) { 708 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1; 709 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4) { 710 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4; 711 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8) { 712 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8; 713 } else { 714 netdev_err(ena_dev->net_device, 715 "Invalid descs_num_before_header, supported: 0x%x\n", 716 supported_feat); 717 return -EINVAL; 718 } 719 720 netdev_err(ena_dev->net_device, 721 "Default llq num descs before header is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", 722 llq_default_cfg->llq_num_decs_before_header, supported_feat, 723 llq_info->descs_num_before_header); 724 } 725 /* Check for accelerated queue supported */ 726 llq_accel_mode_get = llq_features->accel_mode.u.get; 727 728 llq_info->disable_meta_caching = 729 !!(llq_accel_mode_get.supported_flags & 730 BIT(ENA_ADMIN_DISABLE_META_CACHING)); 731 732 if (llq_accel_mode_get.supported_flags & BIT(ENA_ADMIN_LIMIT_TX_BURST)) 733 llq_info->max_entries_in_tx_burst = 734 llq_accel_mode_get.max_tx_burst_size / 735 llq_default_cfg->llq_ring_entry_size_value; 736 737 rc = ena_com_set_llq(ena_dev); 738 if (rc) 739 netdev_err(ena_dev->net_device, "Cannot set LLQ configuration: %d\n", rc); 740 741 return rc; 742 } 743 744 static int ena_com_wait_and_process_admin_cq_interrupts(struct ena_comp_ctx *comp_ctx, 745 struct ena_com_admin_queue *admin_queue) 746 { 747 unsigned long flags = 0; 748 int ret; 749 750 wait_for_completion_timeout(&comp_ctx->wait_event, 751 usecs_to_jiffies(admin_queue->completion_timeout)); 752 753 /* In case the command wasn't completed find out the root cause. 754 * There might be 2 kinds of errors 755 * 1) No completion (timeout reached) 756 * 2) There is completion but the device didn't get any msi-x interrupt. 757 */ 758 if (unlikely(comp_ctx->status == ENA_CMD_SUBMITTED)) { 759 spin_lock_irqsave(&admin_queue->q_lock, flags); 760 ena_com_handle_admin_completion(admin_queue); 761 admin_queue->stats.no_completion++; 762 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 763 764 if (comp_ctx->status == ENA_CMD_COMPLETED) { 765 netdev_err(admin_queue->ena_dev->net_device, 766 "The ena device sent a completion but the driver didn't receive a MSI-X interrupt (cmd %d), autopolling mode is %s\n", 767 comp_ctx->cmd_opcode, admin_queue->auto_polling ? "ON" : "OFF"); 768 /* Check if fallback to polling is enabled */ 769 if (admin_queue->auto_polling) 770 admin_queue->polling = true; 771 } else { 772 netdev_err(admin_queue->ena_dev->net_device, 773 "The ena device didn't send a completion for the admin cmd %d status %d\n", 774 comp_ctx->cmd_opcode, comp_ctx->status); 775 } 776 /* Check if shifted to polling mode. 777 * This will happen if there is a completion without an interrupt 778 * and autopolling mode is enabled. Continuing normal execution in such case 779 */ 780 if (!admin_queue->polling) { 781 admin_queue->running_state = false; 782 ret = -ETIME; 783 goto err; 784 } 785 } 786 787 ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status); 788 err: 789 comp_ctxt_release(admin_queue, comp_ctx); 790 return ret; 791 } 792 793 /* This method read the hardware device register through posting writes 794 * and waiting for response 795 * On timeout the function will return ENA_MMIO_READ_TIMEOUT 796 */ 797 static u32 ena_com_reg_bar_read32(struct ena_com_dev *ena_dev, u16 offset) 798 { 799 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; 800 volatile struct ena_admin_ena_mmio_req_read_less_resp *read_resp = 801 mmio_read->read_resp; 802 u32 mmio_read_reg, ret, i; 803 unsigned long flags = 0; 804 u32 timeout = mmio_read->reg_read_to; 805 806 might_sleep(); 807 808 if (timeout == 0) 809 timeout = ENA_REG_READ_TIMEOUT; 810 811 /* If readless is disabled, perform regular read */ 812 if (!mmio_read->readless_supported) 813 return readl(ena_dev->reg_bar + offset); 814 815 spin_lock_irqsave(&mmio_read->lock, flags); 816 mmio_read->seq_num++; 817 818 read_resp->req_id = mmio_read->seq_num + 0xDEAD; 819 mmio_read_reg = (offset << ENA_REGS_MMIO_REG_READ_REG_OFF_SHIFT) & 820 ENA_REGS_MMIO_REG_READ_REG_OFF_MASK; 821 mmio_read_reg |= mmio_read->seq_num & 822 ENA_REGS_MMIO_REG_READ_REQ_ID_MASK; 823 824 writel(mmio_read_reg, ena_dev->reg_bar + ENA_REGS_MMIO_REG_READ_OFF); 825 826 for (i = 0; i < timeout; i++) { 827 if (READ_ONCE(read_resp->req_id) == mmio_read->seq_num) 828 break; 829 830 udelay(1); 831 } 832 833 if (unlikely(i == timeout)) { 834 netdev_err(ena_dev->net_device, 835 "Reading reg failed for timeout. expected: req id[%u] offset[%u] actual: req id[%u] offset[%u]\n", 836 mmio_read->seq_num, offset, read_resp->req_id, read_resp->reg_off); 837 ret = ENA_MMIO_READ_TIMEOUT; 838 goto err; 839 } 840 841 if (read_resp->reg_off != offset) { 842 netdev_err(ena_dev->net_device, "Read failure: wrong offset provided\n"); 843 ret = ENA_MMIO_READ_TIMEOUT; 844 } else { 845 ret = read_resp->reg_val; 846 } 847 err: 848 spin_unlock_irqrestore(&mmio_read->lock, flags); 849 850 return ret; 851 } 852 853 /* There are two types to wait for completion. 854 * Polling mode - wait until the completion is available. 855 * Async mode - wait on wait queue until the completion is ready 856 * (or the timeout expired). 857 * It is expected that the IRQ called ena_com_handle_admin_completion 858 * to mark the completions. 859 */ 860 static int ena_com_wait_and_process_admin_cq(struct ena_comp_ctx *comp_ctx, 861 struct ena_com_admin_queue *admin_queue) 862 { 863 if (admin_queue->polling) 864 return ena_com_wait_and_process_admin_cq_polling(comp_ctx, 865 admin_queue); 866 867 return ena_com_wait_and_process_admin_cq_interrupts(comp_ctx, 868 admin_queue); 869 } 870 871 static int ena_com_destroy_io_sq(struct ena_com_dev *ena_dev, 872 struct ena_com_io_sq *io_sq) 873 { 874 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 875 struct ena_admin_aq_destroy_sq_cmd destroy_cmd; 876 struct ena_admin_acq_destroy_sq_resp_desc destroy_resp; 877 u8 direction; 878 int ret; 879 880 memset(&destroy_cmd, 0x0, sizeof(destroy_cmd)); 881 882 if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) 883 direction = ENA_ADMIN_SQ_DIRECTION_TX; 884 else 885 direction = ENA_ADMIN_SQ_DIRECTION_RX; 886 887 destroy_cmd.sq.sq_identity |= (direction << 888 ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT) & 889 ENA_ADMIN_SQ_SQ_DIRECTION_MASK; 890 891 destroy_cmd.sq.sq_idx = io_sq->idx; 892 destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_SQ; 893 894 ret = ena_com_execute_admin_command(admin_queue, 895 (struct ena_admin_aq_entry *)&destroy_cmd, 896 sizeof(destroy_cmd), 897 (struct ena_admin_acq_entry *)&destroy_resp, 898 sizeof(destroy_resp)); 899 900 if (unlikely(ret && (ret != -ENODEV))) 901 netdev_err(ena_dev->net_device, "Failed to destroy io sq error: %d\n", ret); 902 903 return ret; 904 } 905 906 static void ena_com_io_queue_free(struct ena_com_dev *ena_dev, 907 struct ena_com_io_sq *io_sq, 908 struct ena_com_io_cq *io_cq) 909 { 910 size_t size; 911 912 if (io_cq->cdesc_addr.virt_addr) { 913 size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth; 914 915 dma_free_coherent(ena_dev->dmadev, size, io_cq->cdesc_addr.virt_addr, 916 io_cq->cdesc_addr.phys_addr); 917 918 io_cq->cdesc_addr.virt_addr = NULL; 919 } 920 921 if (io_sq->desc_addr.virt_addr) { 922 size = io_sq->desc_entry_size * io_sq->q_depth; 923 924 dma_free_coherent(ena_dev->dmadev, size, io_sq->desc_addr.virt_addr, 925 io_sq->desc_addr.phys_addr); 926 927 io_sq->desc_addr.virt_addr = NULL; 928 } 929 930 if (io_sq->bounce_buf_ctrl.base_buffer) { 931 devm_kfree(ena_dev->dmadev, io_sq->bounce_buf_ctrl.base_buffer); 932 io_sq->bounce_buf_ctrl.base_buffer = NULL; 933 } 934 } 935 936 static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout, 937 u16 exp_state) 938 { 939 u32 val, exp = 0; 940 unsigned long timeout_stamp; 941 942 /* Convert timeout from resolution of 100ms to us resolution. */ 943 timeout_stamp = jiffies + usecs_to_jiffies(100 * 1000 * timeout); 944 945 while (1) { 946 val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); 947 948 if (unlikely(val == ENA_MMIO_READ_TIMEOUT)) { 949 netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); 950 return -ETIME; 951 } 952 953 if ((val & ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK) == 954 exp_state) 955 return 0; 956 957 if (time_is_before_jiffies(timeout_stamp)) 958 return -ETIME; 959 960 ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us); 961 } 962 } 963 964 static bool ena_com_check_supported_feature_id(struct ena_com_dev *ena_dev, 965 enum ena_admin_aq_feature_id feature_id) 966 { 967 u32 feature_mask = 1 << feature_id; 968 969 /* Device attributes is always supported */ 970 if ((feature_id != ENA_ADMIN_DEVICE_ATTRIBUTES) && 971 !(ena_dev->supported_features & feature_mask)) 972 return false; 973 974 return true; 975 } 976 977 static int ena_com_get_feature_ex(struct ena_com_dev *ena_dev, 978 struct ena_admin_get_feat_resp *get_resp, 979 enum ena_admin_aq_feature_id feature_id, 980 dma_addr_t control_buf_dma_addr, 981 u32 control_buff_size, 982 u8 feature_ver) 983 { 984 struct ena_com_admin_queue *admin_queue; 985 struct ena_admin_get_feat_cmd get_cmd; 986 int ret; 987 988 if (!ena_com_check_supported_feature_id(ena_dev, feature_id)) { 989 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", feature_id); 990 return -EOPNOTSUPP; 991 } 992 993 memset(&get_cmd, 0x0, sizeof(get_cmd)); 994 admin_queue = &ena_dev->admin_queue; 995 996 get_cmd.aq_common_descriptor.opcode = ENA_ADMIN_GET_FEATURE; 997 998 if (control_buff_size) 999 get_cmd.aq_common_descriptor.flags = 1000 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; 1001 else 1002 get_cmd.aq_common_descriptor.flags = 0; 1003 1004 ret = ena_com_mem_addr_set(ena_dev, 1005 &get_cmd.control_buffer.address, 1006 control_buf_dma_addr); 1007 if (unlikely(ret)) { 1008 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 1009 return ret; 1010 } 1011 1012 get_cmd.control_buffer.length = control_buff_size; 1013 get_cmd.feat_common.feature_version = feature_ver; 1014 get_cmd.feat_common.feature_id = feature_id; 1015 1016 ret = ena_com_execute_admin_command(admin_queue, 1017 (struct ena_admin_aq_entry *) 1018 &get_cmd, 1019 sizeof(get_cmd), 1020 (struct ena_admin_acq_entry *) 1021 get_resp, 1022 sizeof(*get_resp)); 1023 1024 if (unlikely(ret)) 1025 netdev_err(ena_dev->net_device, 1026 "Failed to submit get_feature command %d error: %d\n", feature_id, ret); 1027 1028 return ret; 1029 } 1030 1031 static int ena_com_get_feature(struct ena_com_dev *ena_dev, 1032 struct ena_admin_get_feat_resp *get_resp, 1033 enum ena_admin_aq_feature_id feature_id, 1034 u8 feature_ver) 1035 { 1036 return ena_com_get_feature_ex(ena_dev, 1037 get_resp, 1038 feature_id, 1039 0, 1040 0, 1041 feature_ver); 1042 } 1043 1044 int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev) 1045 { 1046 return ena_dev->rss.hash_func; 1047 } 1048 1049 static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev) 1050 { 1051 struct ena_admin_feature_rss_flow_hash_control *hash_key = 1052 (ena_dev->rss).hash_key; 1053 1054 netdev_rss_key_fill(&hash_key->key, sizeof(hash_key->key)); 1055 /* The key buffer is stored in the device in an array of 1056 * uint32 elements. 1057 */ 1058 hash_key->key_parts = ENA_ADMIN_RSS_KEY_PARTS; 1059 } 1060 1061 static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev) 1062 { 1063 struct ena_rss *rss = &ena_dev->rss; 1064 1065 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_FUNCTION)) 1066 return -EOPNOTSUPP; 1067 1068 rss->hash_key = dma_alloc_coherent(ena_dev->dmadev, sizeof(*rss->hash_key), 1069 &rss->hash_key_dma_addr, GFP_KERNEL); 1070 1071 if (unlikely(!rss->hash_key)) 1072 return -ENOMEM; 1073 1074 return 0; 1075 } 1076 1077 static void ena_com_hash_key_destroy(struct ena_com_dev *ena_dev) 1078 { 1079 struct ena_rss *rss = &ena_dev->rss; 1080 1081 if (rss->hash_key) 1082 dma_free_coherent(ena_dev->dmadev, sizeof(*rss->hash_key), rss->hash_key, 1083 rss->hash_key_dma_addr); 1084 rss->hash_key = NULL; 1085 } 1086 1087 static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev) 1088 { 1089 struct ena_rss *rss = &ena_dev->rss; 1090 1091 rss->hash_ctrl = dma_alloc_coherent(ena_dev->dmadev, sizeof(*rss->hash_ctrl), 1092 &rss->hash_ctrl_dma_addr, GFP_KERNEL); 1093 1094 if (unlikely(!rss->hash_ctrl)) 1095 return -ENOMEM; 1096 1097 return 0; 1098 } 1099 1100 static void ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev) 1101 { 1102 struct ena_rss *rss = &ena_dev->rss; 1103 1104 if (rss->hash_ctrl) 1105 dma_free_coherent(ena_dev->dmadev, sizeof(*rss->hash_ctrl), rss->hash_ctrl, 1106 rss->hash_ctrl_dma_addr); 1107 rss->hash_ctrl = NULL; 1108 } 1109 1110 static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev, 1111 u16 log_size) 1112 { 1113 struct ena_rss *rss = &ena_dev->rss; 1114 struct ena_admin_get_feat_resp get_resp; 1115 size_t tbl_size; 1116 int ret; 1117 1118 ret = ena_com_get_feature(ena_dev, &get_resp, 1119 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 0); 1120 if (unlikely(ret)) 1121 return ret; 1122 1123 if ((get_resp.u.ind_table.min_size > log_size) || 1124 (get_resp.u.ind_table.max_size < log_size)) { 1125 netdev_err(ena_dev->net_device, 1126 "Indirect table size doesn't fit. requested size: %d while min is:%d and max %d\n", 1127 1 << log_size, 1 << get_resp.u.ind_table.min_size, 1128 1 << get_resp.u.ind_table.max_size); 1129 return -EINVAL; 1130 } 1131 1132 tbl_size = (1ULL << log_size) * 1133 sizeof(struct ena_admin_rss_ind_table_entry); 1134 1135 rss->rss_ind_tbl = dma_alloc_coherent(ena_dev->dmadev, tbl_size, &rss->rss_ind_tbl_dma_addr, 1136 GFP_KERNEL); 1137 if (unlikely(!rss->rss_ind_tbl)) 1138 goto mem_err1; 1139 1140 tbl_size = (1ULL << log_size) * sizeof(u16); 1141 rss->host_rss_ind_tbl = devm_kzalloc(ena_dev->dmadev, tbl_size, GFP_KERNEL); 1142 if (unlikely(!rss->host_rss_ind_tbl)) 1143 goto mem_err2; 1144 1145 rss->tbl_log_size = log_size; 1146 1147 return 0; 1148 1149 mem_err2: 1150 tbl_size = (1ULL << log_size) * 1151 sizeof(struct ena_admin_rss_ind_table_entry); 1152 1153 dma_free_coherent(ena_dev->dmadev, tbl_size, rss->rss_ind_tbl, rss->rss_ind_tbl_dma_addr); 1154 rss->rss_ind_tbl = NULL; 1155 mem_err1: 1156 rss->tbl_log_size = 0; 1157 return -ENOMEM; 1158 } 1159 1160 static void ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev) 1161 { 1162 struct ena_rss *rss = &ena_dev->rss; 1163 size_t tbl_size = (1ULL << rss->tbl_log_size) * 1164 sizeof(struct ena_admin_rss_ind_table_entry); 1165 1166 if (rss->rss_ind_tbl) 1167 dma_free_coherent(ena_dev->dmadev, tbl_size, rss->rss_ind_tbl, 1168 rss->rss_ind_tbl_dma_addr); 1169 rss->rss_ind_tbl = NULL; 1170 1171 if (rss->host_rss_ind_tbl) 1172 devm_kfree(ena_dev->dmadev, rss->host_rss_ind_tbl); 1173 rss->host_rss_ind_tbl = NULL; 1174 } 1175 1176 static int ena_com_create_io_sq(struct ena_com_dev *ena_dev, 1177 struct ena_com_io_sq *io_sq, u16 cq_idx) 1178 { 1179 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1180 struct ena_admin_aq_create_sq_cmd create_cmd; 1181 struct ena_admin_acq_create_sq_resp_desc cmd_completion; 1182 u8 direction; 1183 int ret; 1184 1185 memset(&create_cmd, 0x0, sizeof(create_cmd)); 1186 1187 create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_SQ; 1188 1189 if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) 1190 direction = ENA_ADMIN_SQ_DIRECTION_TX; 1191 else 1192 direction = ENA_ADMIN_SQ_DIRECTION_RX; 1193 1194 create_cmd.sq_identity |= (direction << 1195 ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT) & 1196 ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK; 1197 1198 create_cmd.sq_caps_2 |= io_sq->mem_queue_type & 1199 ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK; 1200 1201 create_cmd.sq_caps_2 |= (ENA_ADMIN_COMPLETION_POLICY_DESC << 1202 ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT) & 1203 ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK; 1204 1205 create_cmd.sq_caps_3 |= 1206 ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK; 1207 1208 create_cmd.cq_idx = cq_idx; 1209 create_cmd.sq_depth = io_sq->q_depth; 1210 1211 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) { 1212 ret = ena_com_mem_addr_set(ena_dev, 1213 &create_cmd.sq_ba, 1214 io_sq->desc_addr.phys_addr); 1215 if (unlikely(ret)) { 1216 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 1217 return ret; 1218 } 1219 } 1220 1221 ret = ena_com_execute_admin_command(admin_queue, 1222 (struct ena_admin_aq_entry *)&create_cmd, 1223 sizeof(create_cmd), 1224 (struct ena_admin_acq_entry *)&cmd_completion, 1225 sizeof(cmd_completion)); 1226 if (unlikely(ret)) { 1227 netdev_err(ena_dev->net_device, "Failed to create IO SQ. error: %d\n", ret); 1228 return ret; 1229 } 1230 1231 io_sq->idx = cmd_completion.sq_idx; 1232 1233 io_sq->db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + 1234 (uintptr_t)cmd_completion.sq_doorbell_offset); 1235 1236 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) { 1237 io_sq->desc_addr.pbuf_dev_addr = 1238 (u8 __iomem *)((uintptr_t)ena_dev->mem_bar + 1239 cmd_completion.llq_descriptors_offset); 1240 } 1241 1242 netdev_dbg(ena_dev->net_device, "Created sq[%u], depth[%u]\n", io_sq->idx, io_sq->q_depth); 1243 1244 return ret; 1245 } 1246 1247 static int ena_com_ind_tbl_convert_to_device(struct ena_com_dev *ena_dev) 1248 { 1249 struct ena_rss *rss = &ena_dev->rss; 1250 struct ena_com_io_sq *io_sq; 1251 u16 qid; 1252 int i; 1253 1254 for (i = 0; i < 1 << rss->tbl_log_size; i++) { 1255 qid = rss->host_rss_ind_tbl[i]; 1256 if (qid >= ENA_TOTAL_NUM_QUEUES) 1257 return -EINVAL; 1258 1259 io_sq = &ena_dev->io_sq_queues[qid]; 1260 1261 if (io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX) 1262 return -EINVAL; 1263 1264 rss->rss_ind_tbl[i].cq_idx = io_sq->idx; 1265 } 1266 1267 return 0; 1268 } 1269 1270 static void ena_com_update_intr_delay_resolution(struct ena_com_dev *ena_dev, 1271 u16 intr_delay_resolution) 1272 { 1273 u16 prev_intr_delay_resolution = ena_dev->intr_delay_resolution; 1274 1275 if (unlikely(!intr_delay_resolution)) { 1276 netdev_err(ena_dev->net_device, 1277 "Illegal intr_delay_resolution provided. Going to use default 1 usec resolution\n"); 1278 intr_delay_resolution = ENA_DEFAULT_INTR_DELAY_RESOLUTION; 1279 } 1280 1281 /* update Rx */ 1282 ena_dev->intr_moder_rx_interval = 1283 ena_dev->intr_moder_rx_interval * 1284 prev_intr_delay_resolution / 1285 intr_delay_resolution; 1286 1287 /* update Tx */ 1288 ena_dev->intr_moder_tx_interval = 1289 ena_dev->intr_moder_tx_interval * 1290 prev_intr_delay_resolution / 1291 intr_delay_resolution; 1292 1293 ena_dev->intr_delay_resolution = intr_delay_resolution; 1294 } 1295 1296 /*****************************************************************************/ 1297 /******************************* API ******************************/ 1298 /*****************************************************************************/ 1299 1300 int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue, 1301 struct ena_admin_aq_entry *cmd, 1302 size_t cmd_size, 1303 struct ena_admin_acq_entry *comp, 1304 size_t comp_size) 1305 { 1306 struct ena_comp_ctx *comp_ctx; 1307 int ret; 1308 1309 comp_ctx = ena_com_submit_admin_cmd(admin_queue, cmd, cmd_size, 1310 comp, comp_size); 1311 if (IS_ERR(comp_ctx)) { 1312 ret = PTR_ERR(comp_ctx); 1313 if (ret == -ENODEV) 1314 netdev_dbg(admin_queue->ena_dev->net_device, 1315 "Failed to submit command [%d]\n", ret); 1316 else 1317 netdev_err(admin_queue->ena_dev->net_device, 1318 "Failed to submit command [%d]\n", ret); 1319 1320 return ret; 1321 } 1322 1323 ret = ena_com_wait_and_process_admin_cq(comp_ctx, admin_queue); 1324 if (unlikely(ret)) { 1325 if (admin_queue->running_state) 1326 netdev_err(admin_queue->ena_dev->net_device, 1327 "Failed to process command. ret = %d\n", ret); 1328 else 1329 netdev_dbg(admin_queue->ena_dev->net_device, 1330 "Failed to process command. ret = %d\n", ret); 1331 } 1332 return ret; 1333 } 1334 1335 int ena_com_create_io_cq(struct ena_com_dev *ena_dev, 1336 struct ena_com_io_cq *io_cq) 1337 { 1338 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1339 struct ena_admin_aq_create_cq_cmd create_cmd; 1340 struct ena_admin_acq_create_cq_resp_desc cmd_completion; 1341 int ret; 1342 1343 memset(&create_cmd, 0x0, sizeof(create_cmd)); 1344 1345 create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_CQ; 1346 1347 create_cmd.cq_caps_2 |= (io_cq->cdesc_entry_size_in_bytes / 4) & 1348 ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK; 1349 create_cmd.cq_caps_1 |= 1350 ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK; 1351 1352 create_cmd.msix_vector = io_cq->msix_vector; 1353 create_cmd.cq_depth = io_cq->q_depth; 1354 1355 ret = ena_com_mem_addr_set(ena_dev, 1356 &create_cmd.cq_ba, 1357 io_cq->cdesc_addr.phys_addr); 1358 if (unlikely(ret)) { 1359 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 1360 return ret; 1361 } 1362 1363 ret = ena_com_execute_admin_command(admin_queue, 1364 (struct ena_admin_aq_entry *)&create_cmd, 1365 sizeof(create_cmd), 1366 (struct ena_admin_acq_entry *)&cmd_completion, 1367 sizeof(cmd_completion)); 1368 if (unlikely(ret)) { 1369 netdev_err(ena_dev->net_device, "Failed to create IO CQ. error: %d\n", ret); 1370 return ret; 1371 } 1372 1373 io_cq->idx = cmd_completion.cq_idx; 1374 1375 io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + 1376 cmd_completion.cq_interrupt_unmask_register_offset); 1377 1378 if (cmd_completion.numa_node_register_offset) 1379 io_cq->numa_node_cfg_reg = 1380 (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + 1381 cmd_completion.numa_node_register_offset); 1382 1383 netdev_dbg(ena_dev->net_device, "Created cq[%u], depth[%u]\n", io_cq->idx, io_cq->q_depth); 1384 1385 return ret; 1386 } 1387 1388 int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid, 1389 struct ena_com_io_sq **io_sq, 1390 struct ena_com_io_cq **io_cq) 1391 { 1392 if (qid >= ENA_TOTAL_NUM_QUEUES) { 1393 netdev_err(ena_dev->net_device, "Invalid queue number %d but the max is %d\n", qid, 1394 ENA_TOTAL_NUM_QUEUES); 1395 return -EINVAL; 1396 } 1397 1398 *io_sq = &ena_dev->io_sq_queues[qid]; 1399 *io_cq = &ena_dev->io_cq_queues[qid]; 1400 1401 return 0; 1402 } 1403 1404 void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev) 1405 { 1406 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1407 struct ena_comp_ctx *comp_ctx; 1408 u16 i; 1409 1410 if (!admin_queue->comp_ctx) 1411 return; 1412 1413 for (i = 0; i < admin_queue->q_depth; i++) { 1414 comp_ctx = get_comp_ctxt(admin_queue, i, false); 1415 if (unlikely(!comp_ctx)) 1416 break; 1417 1418 comp_ctx->status = ENA_CMD_ABORTED; 1419 1420 complete(&comp_ctx->wait_event); 1421 } 1422 } 1423 1424 void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev) 1425 { 1426 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1427 unsigned long flags = 0; 1428 u32 exp = 0; 1429 1430 spin_lock_irqsave(&admin_queue->q_lock, flags); 1431 while (atomic_read(&admin_queue->outstanding_cmds) != 0) { 1432 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 1433 ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us); 1434 spin_lock_irqsave(&admin_queue->q_lock, flags); 1435 } 1436 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 1437 } 1438 1439 int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev, 1440 struct ena_com_io_cq *io_cq) 1441 { 1442 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1443 struct ena_admin_aq_destroy_cq_cmd destroy_cmd; 1444 struct ena_admin_acq_destroy_cq_resp_desc destroy_resp; 1445 int ret; 1446 1447 memset(&destroy_cmd, 0x0, sizeof(destroy_cmd)); 1448 1449 destroy_cmd.cq_idx = io_cq->idx; 1450 destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_CQ; 1451 1452 ret = ena_com_execute_admin_command(admin_queue, 1453 (struct ena_admin_aq_entry *)&destroy_cmd, 1454 sizeof(destroy_cmd), 1455 (struct ena_admin_acq_entry *)&destroy_resp, 1456 sizeof(destroy_resp)); 1457 1458 if (unlikely(ret && (ret != -ENODEV))) 1459 netdev_err(ena_dev->net_device, "Failed to destroy IO CQ. error: %d\n", ret); 1460 1461 return ret; 1462 } 1463 1464 bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev) 1465 { 1466 return ena_dev->admin_queue.running_state; 1467 } 1468 1469 void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state) 1470 { 1471 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1472 unsigned long flags = 0; 1473 1474 spin_lock_irqsave(&admin_queue->q_lock, flags); 1475 ena_dev->admin_queue.running_state = state; 1476 spin_unlock_irqrestore(&admin_queue->q_lock, flags); 1477 } 1478 1479 void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev) 1480 { 1481 u16 depth = ena_dev->aenq.q_depth; 1482 1483 WARN(ena_dev->aenq.head != depth, "Invalid AENQ state\n"); 1484 1485 /* Init head_db to mark that all entries in the queue 1486 * are initially available 1487 */ 1488 writel(depth, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF); 1489 } 1490 1491 int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag) 1492 { 1493 struct ena_com_admin_queue *admin_queue; 1494 struct ena_admin_set_feat_cmd cmd; 1495 struct ena_admin_set_feat_resp resp; 1496 struct ena_admin_get_feat_resp get_resp; 1497 int ret; 1498 1499 ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_AENQ_CONFIG, 0); 1500 if (ret) { 1501 dev_info(ena_dev->dmadev, "Can't get aenq configuration\n"); 1502 return ret; 1503 } 1504 1505 if ((get_resp.u.aenq.supported_groups & groups_flag) != groups_flag) { 1506 netdev_warn(ena_dev->net_device, 1507 "Trying to set unsupported aenq events. supported flag: 0x%x asked flag: 0x%x\n", 1508 get_resp.u.aenq.supported_groups, groups_flag); 1509 return -EOPNOTSUPP; 1510 } 1511 1512 memset(&cmd, 0x0, sizeof(cmd)); 1513 admin_queue = &ena_dev->admin_queue; 1514 1515 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 1516 cmd.aq_common_descriptor.flags = 0; 1517 cmd.feat_common.feature_id = ENA_ADMIN_AENQ_CONFIG; 1518 cmd.u.aenq.enabled_groups = groups_flag; 1519 1520 ret = ena_com_execute_admin_command(admin_queue, 1521 (struct ena_admin_aq_entry *)&cmd, 1522 sizeof(cmd), 1523 (struct ena_admin_acq_entry *)&resp, 1524 sizeof(resp)); 1525 1526 if (unlikely(ret)) 1527 netdev_err(ena_dev->net_device, "Failed to config AENQ ret: %d\n", ret); 1528 1529 return ret; 1530 } 1531 1532 int ena_com_get_dma_width(struct ena_com_dev *ena_dev) 1533 { 1534 u32 caps = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF); 1535 u32 width; 1536 1537 if (unlikely(caps == ENA_MMIO_READ_TIMEOUT)) { 1538 netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); 1539 return -ETIME; 1540 } 1541 1542 width = (caps & ENA_REGS_CAPS_DMA_ADDR_WIDTH_MASK) >> 1543 ENA_REGS_CAPS_DMA_ADDR_WIDTH_SHIFT; 1544 1545 netdev_dbg(ena_dev->net_device, "ENA dma width: %d\n", width); 1546 1547 if ((width < 32) || width > ENA_MAX_PHYS_ADDR_SIZE_BITS) { 1548 netdev_err(ena_dev->net_device, "DMA width illegal value: %d\n", width); 1549 return -EINVAL; 1550 } 1551 1552 ena_dev->dma_addr_bits = width; 1553 1554 return width; 1555 } 1556 1557 int ena_com_validate_version(struct ena_com_dev *ena_dev) 1558 { 1559 u32 ver; 1560 u32 ctrl_ver; 1561 u32 ctrl_ver_masked; 1562 1563 /* Make sure the ENA version and the controller version are at least 1564 * as the driver expects 1565 */ 1566 ver = ena_com_reg_bar_read32(ena_dev, ENA_REGS_VERSION_OFF); 1567 ctrl_ver = ena_com_reg_bar_read32(ena_dev, 1568 ENA_REGS_CONTROLLER_VERSION_OFF); 1569 1570 if (unlikely((ver == ENA_MMIO_READ_TIMEOUT) || (ctrl_ver == ENA_MMIO_READ_TIMEOUT))) { 1571 netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); 1572 return -ETIME; 1573 } 1574 1575 dev_info(ena_dev->dmadev, "ENA device version: %d.%d\n", 1576 (ver & ENA_REGS_VERSION_MAJOR_VERSION_MASK) >> ENA_REGS_VERSION_MAJOR_VERSION_SHIFT, 1577 ver & ENA_REGS_VERSION_MINOR_VERSION_MASK); 1578 1579 dev_info(ena_dev->dmadev, "ENA controller version: %d.%d.%d implementation version %d\n", 1580 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) >> 1581 ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT, 1582 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) >> 1583 ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT, 1584 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK), 1585 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_IMPL_ID_MASK) >> 1586 ENA_REGS_CONTROLLER_VERSION_IMPL_ID_SHIFT); 1587 1588 ctrl_ver_masked = 1589 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) | 1590 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) | 1591 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK); 1592 1593 /* Validate the ctrl version without the implementation ID */ 1594 if (ctrl_ver_masked < MIN_ENA_CTRL_VER) { 1595 netdev_err(ena_dev->net_device, 1596 "ENA ctrl version is lower than the minimal ctrl version the driver supports\n"); 1597 return -1; 1598 } 1599 1600 return 0; 1601 } 1602 1603 static void 1604 ena_com_free_ena_admin_queue_comp_ctx(struct ena_com_dev *ena_dev, 1605 struct ena_com_admin_queue *admin_queue) 1606 1607 { 1608 if (!admin_queue->comp_ctx) 1609 return; 1610 1611 devm_kfree(ena_dev->dmadev, admin_queue->comp_ctx); 1612 1613 admin_queue->comp_ctx = NULL; 1614 } 1615 1616 void ena_com_admin_destroy(struct ena_com_dev *ena_dev) 1617 { 1618 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1619 struct ena_com_admin_cq *cq = &admin_queue->cq; 1620 struct ena_com_admin_sq *sq = &admin_queue->sq; 1621 struct ena_com_aenq *aenq = &ena_dev->aenq; 1622 u16 size; 1623 1624 ena_com_free_ena_admin_queue_comp_ctx(ena_dev, admin_queue); 1625 1626 size = ADMIN_SQ_SIZE(admin_queue->q_depth); 1627 if (sq->entries) 1628 dma_free_coherent(ena_dev->dmadev, size, sq->entries, sq->dma_addr); 1629 sq->entries = NULL; 1630 1631 size = ADMIN_CQ_SIZE(admin_queue->q_depth); 1632 if (cq->entries) 1633 dma_free_coherent(ena_dev->dmadev, size, cq->entries, cq->dma_addr); 1634 cq->entries = NULL; 1635 1636 size = ADMIN_AENQ_SIZE(aenq->q_depth); 1637 if (ena_dev->aenq.entries) 1638 dma_free_coherent(ena_dev->dmadev, size, aenq->entries, aenq->dma_addr); 1639 aenq->entries = NULL; 1640 } 1641 1642 void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling) 1643 { 1644 u32 mask_value = 0; 1645 1646 if (polling) 1647 mask_value = ENA_REGS_ADMIN_INTR_MASK; 1648 1649 writel(mask_value, ena_dev->reg_bar + ENA_REGS_INTR_MASK_OFF); 1650 ena_dev->admin_queue.polling = polling; 1651 } 1652 1653 void ena_com_set_admin_auto_polling_mode(struct ena_com_dev *ena_dev, 1654 bool polling) 1655 { 1656 ena_dev->admin_queue.auto_polling = polling; 1657 } 1658 1659 int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev) 1660 { 1661 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; 1662 1663 spin_lock_init(&mmio_read->lock); 1664 mmio_read->read_resp = dma_alloc_coherent(ena_dev->dmadev, sizeof(*mmio_read->read_resp), 1665 &mmio_read->read_resp_dma_addr, GFP_KERNEL); 1666 if (unlikely(!mmio_read->read_resp)) 1667 goto err; 1668 1669 ena_com_mmio_reg_read_request_write_dev_addr(ena_dev); 1670 1671 mmio_read->read_resp->req_id = 0x0; 1672 mmio_read->seq_num = 0x0; 1673 mmio_read->readless_supported = true; 1674 1675 return 0; 1676 1677 err: 1678 1679 return -ENOMEM; 1680 } 1681 1682 void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported) 1683 { 1684 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; 1685 1686 mmio_read->readless_supported = readless_supported; 1687 } 1688 1689 void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev) 1690 { 1691 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; 1692 1693 writel(0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF); 1694 writel(0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF); 1695 1696 dma_free_coherent(ena_dev->dmadev, sizeof(*mmio_read->read_resp), mmio_read->read_resp, 1697 mmio_read->read_resp_dma_addr); 1698 1699 mmio_read->read_resp = NULL; 1700 } 1701 1702 void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev) 1703 { 1704 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; 1705 u32 addr_low, addr_high; 1706 1707 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(mmio_read->read_resp_dma_addr); 1708 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(mmio_read->read_resp_dma_addr); 1709 1710 writel(addr_low, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF); 1711 writel(addr_high, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF); 1712 } 1713 1714 int ena_com_admin_init(struct ena_com_dev *ena_dev, 1715 struct ena_aenq_handlers *aenq_handlers) 1716 { 1717 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 1718 u32 aq_caps, acq_caps, dev_sts, addr_low, addr_high; 1719 int ret; 1720 1721 dev_sts = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); 1722 1723 if (unlikely(dev_sts == ENA_MMIO_READ_TIMEOUT)) { 1724 netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); 1725 return -ETIME; 1726 } 1727 1728 if (!(dev_sts & ENA_REGS_DEV_STS_READY_MASK)) { 1729 netdev_err(ena_dev->net_device, "Device isn't ready, abort com init\n"); 1730 return -ENODEV; 1731 } 1732 1733 admin_queue->q_depth = ENA_ADMIN_QUEUE_DEPTH; 1734 1735 admin_queue->q_dmadev = ena_dev->dmadev; 1736 admin_queue->polling = false; 1737 admin_queue->curr_cmd_id = 0; 1738 1739 atomic_set(&admin_queue->outstanding_cmds, 0); 1740 1741 spin_lock_init(&admin_queue->q_lock); 1742 1743 ret = ena_com_init_comp_ctxt(admin_queue); 1744 if (ret) 1745 goto error; 1746 1747 ret = ena_com_admin_init_sq(admin_queue); 1748 if (ret) 1749 goto error; 1750 1751 ret = ena_com_admin_init_cq(admin_queue); 1752 if (ret) 1753 goto error; 1754 1755 admin_queue->sq.db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + 1756 ENA_REGS_AQ_DB_OFF); 1757 1758 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->sq.dma_addr); 1759 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->sq.dma_addr); 1760 1761 writel(addr_low, ena_dev->reg_bar + ENA_REGS_AQ_BASE_LO_OFF); 1762 writel(addr_high, ena_dev->reg_bar + ENA_REGS_AQ_BASE_HI_OFF); 1763 1764 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->cq.dma_addr); 1765 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->cq.dma_addr); 1766 1767 writel(addr_low, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_LO_OFF); 1768 writel(addr_high, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_HI_OFF); 1769 1770 aq_caps = 0; 1771 aq_caps |= admin_queue->q_depth & ENA_REGS_AQ_CAPS_AQ_DEPTH_MASK; 1772 aq_caps |= (sizeof(struct ena_admin_aq_entry) << 1773 ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_SHIFT) & 1774 ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_MASK; 1775 1776 acq_caps = 0; 1777 acq_caps |= admin_queue->q_depth & ENA_REGS_ACQ_CAPS_ACQ_DEPTH_MASK; 1778 acq_caps |= (sizeof(struct ena_admin_acq_entry) << 1779 ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_SHIFT) & 1780 ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_MASK; 1781 1782 writel(aq_caps, ena_dev->reg_bar + ENA_REGS_AQ_CAPS_OFF); 1783 writel(acq_caps, ena_dev->reg_bar + ENA_REGS_ACQ_CAPS_OFF); 1784 ret = ena_com_admin_init_aenq(ena_dev, aenq_handlers); 1785 if (ret) 1786 goto error; 1787 1788 admin_queue->ena_dev = ena_dev; 1789 admin_queue->running_state = true; 1790 1791 return 0; 1792 error: 1793 ena_com_admin_destroy(ena_dev); 1794 1795 return ret; 1796 } 1797 1798 int ena_com_create_io_queue(struct ena_com_dev *ena_dev, 1799 struct ena_com_create_io_ctx *ctx) 1800 { 1801 struct ena_com_io_sq *io_sq; 1802 struct ena_com_io_cq *io_cq; 1803 int ret; 1804 1805 if (ctx->qid >= ENA_TOTAL_NUM_QUEUES) { 1806 netdev_err(ena_dev->net_device, "Qid (%d) is bigger than max num of queues (%d)\n", 1807 ctx->qid, ENA_TOTAL_NUM_QUEUES); 1808 return -EINVAL; 1809 } 1810 1811 io_sq = &ena_dev->io_sq_queues[ctx->qid]; 1812 io_cq = &ena_dev->io_cq_queues[ctx->qid]; 1813 1814 memset(io_sq, 0x0, sizeof(*io_sq)); 1815 memset(io_cq, 0x0, sizeof(*io_cq)); 1816 1817 /* Init CQ */ 1818 io_cq->q_depth = ctx->queue_size; 1819 io_cq->direction = ctx->direction; 1820 io_cq->qid = ctx->qid; 1821 1822 io_cq->msix_vector = ctx->msix_vector; 1823 1824 io_sq->q_depth = ctx->queue_size; 1825 io_sq->direction = ctx->direction; 1826 io_sq->qid = ctx->qid; 1827 1828 io_sq->mem_queue_type = ctx->mem_queue_type; 1829 1830 if (ctx->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) 1831 /* header length is limited to 8 bits */ 1832 io_sq->tx_max_header_size = min_t(u32, ena_dev->tx_max_header_size, SZ_256); 1833 1834 ret = ena_com_init_io_sq(ena_dev, ctx, io_sq); 1835 if (ret) 1836 goto error; 1837 ret = ena_com_init_io_cq(ena_dev, ctx, io_cq); 1838 if (ret) 1839 goto error; 1840 1841 ret = ena_com_create_io_cq(ena_dev, io_cq); 1842 if (ret) 1843 goto error; 1844 1845 ret = ena_com_create_io_sq(ena_dev, io_sq, io_cq->idx); 1846 if (ret) 1847 goto destroy_io_cq; 1848 1849 return 0; 1850 1851 destroy_io_cq: 1852 ena_com_destroy_io_cq(ena_dev, io_cq); 1853 error: 1854 ena_com_io_queue_free(ena_dev, io_sq, io_cq); 1855 return ret; 1856 } 1857 1858 void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid) 1859 { 1860 struct ena_com_io_sq *io_sq; 1861 struct ena_com_io_cq *io_cq; 1862 1863 if (qid >= ENA_TOTAL_NUM_QUEUES) { 1864 netdev_err(ena_dev->net_device, "Qid (%d) is bigger than max num of queues (%d)\n", 1865 qid, ENA_TOTAL_NUM_QUEUES); 1866 return; 1867 } 1868 1869 io_sq = &ena_dev->io_sq_queues[qid]; 1870 io_cq = &ena_dev->io_cq_queues[qid]; 1871 1872 ena_com_destroy_io_sq(ena_dev, io_sq); 1873 ena_com_destroy_io_cq(ena_dev, io_cq); 1874 1875 ena_com_io_queue_free(ena_dev, io_sq, io_cq); 1876 } 1877 1878 int ena_com_get_link_params(struct ena_com_dev *ena_dev, 1879 struct ena_admin_get_feat_resp *resp) 1880 { 1881 return ena_com_get_feature(ena_dev, resp, ENA_ADMIN_LINK_CONFIG, 0); 1882 } 1883 1884 static int ena_get_dev_stats(struct ena_com_dev *ena_dev, 1885 struct ena_com_stats_ctx *ctx, 1886 enum ena_admin_get_stats_type type) 1887 { 1888 struct ena_admin_acq_get_stats_resp *get_resp = &ctx->get_resp; 1889 struct ena_admin_aq_get_stats_cmd *get_cmd = &ctx->get_cmd; 1890 struct ena_com_admin_queue *admin_queue; 1891 int ret; 1892 1893 admin_queue = &ena_dev->admin_queue; 1894 1895 get_cmd->aq_common_descriptor.opcode = ENA_ADMIN_GET_STATS; 1896 get_cmd->aq_common_descriptor.flags = 0; 1897 get_cmd->type = type; 1898 1899 ret = ena_com_execute_admin_command(admin_queue, 1900 (struct ena_admin_aq_entry *)get_cmd, 1901 sizeof(*get_cmd), 1902 (struct ena_admin_acq_entry *)get_resp, 1903 sizeof(*get_resp)); 1904 1905 if (unlikely(ret)) 1906 netdev_err(ena_dev->net_device, "Failed to get stats. error: %d\n", ret); 1907 1908 return ret; 1909 } 1910 1911 static void ena_com_set_supported_customer_metrics(struct ena_com_dev *ena_dev) 1912 { 1913 struct ena_customer_metrics *customer_metrics; 1914 struct ena_com_stats_ctx ctx; 1915 int ret; 1916 1917 customer_metrics = &ena_dev->customer_metrics; 1918 if (!ena_com_get_cap(ena_dev, ENA_ADMIN_CUSTOMER_METRICS)) { 1919 customer_metrics->supported_metrics = ENA_ADMIN_CUSTOMER_METRICS_MIN_SUPPORT_MASK; 1920 return; 1921 } 1922 1923 memset(&ctx, 0x0, sizeof(ctx)); 1924 ctx.get_cmd.requested_metrics = ENA_ADMIN_CUSTOMER_METRICS_SUPPORT_MASK; 1925 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_CUSTOMER_METRICS); 1926 if (likely(ret == 0)) 1927 customer_metrics->supported_metrics = 1928 ctx.get_resp.u.customer_metrics.reported_metrics; 1929 else 1930 netdev_err(ena_dev->net_device, 1931 "Failed to query customer metrics support. error: %d\n", ret); 1932 } 1933 1934 int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev, 1935 struct ena_com_dev_get_features_ctx *get_feat_ctx) 1936 { 1937 struct ena_admin_get_feat_resp get_resp; 1938 int rc; 1939 1940 rc = ena_com_get_feature(ena_dev, &get_resp, 1941 ENA_ADMIN_DEVICE_ATTRIBUTES, 0); 1942 if (rc) 1943 return rc; 1944 1945 memcpy(&get_feat_ctx->dev_attr, &get_resp.u.dev_attr, 1946 sizeof(get_resp.u.dev_attr)); 1947 1948 ena_dev->supported_features = get_resp.u.dev_attr.supported_features; 1949 ena_dev->capabilities = get_resp.u.dev_attr.capabilities; 1950 1951 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) { 1952 rc = ena_com_get_feature(ena_dev, &get_resp, 1953 ENA_ADMIN_MAX_QUEUES_EXT, 1954 ENA_FEATURE_MAX_QUEUE_EXT_VER); 1955 if (rc) 1956 return rc; 1957 1958 if (get_resp.u.max_queue_ext.version != ENA_FEATURE_MAX_QUEUE_EXT_VER) 1959 return -EINVAL; 1960 1961 memcpy(&get_feat_ctx->max_queue_ext, &get_resp.u.max_queue_ext, 1962 sizeof(get_resp.u.max_queue_ext)); 1963 ena_dev->tx_max_header_size = 1964 get_resp.u.max_queue_ext.max_queue_ext.max_tx_header_size; 1965 } else { 1966 rc = ena_com_get_feature(ena_dev, &get_resp, 1967 ENA_ADMIN_MAX_QUEUES_NUM, 0); 1968 memcpy(&get_feat_ctx->max_queues, &get_resp.u.max_queue, 1969 sizeof(get_resp.u.max_queue)); 1970 ena_dev->tx_max_header_size = 1971 get_resp.u.max_queue.max_header_size; 1972 1973 if (rc) 1974 return rc; 1975 } 1976 1977 rc = ena_com_get_feature(ena_dev, &get_resp, 1978 ENA_ADMIN_AENQ_CONFIG, 0); 1979 if (rc) 1980 return rc; 1981 1982 memcpy(&get_feat_ctx->aenq, &get_resp.u.aenq, 1983 sizeof(get_resp.u.aenq)); 1984 1985 rc = ena_com_get_feature(ena_dev, &get_resp, 1986 ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0); 1987 if (rc) 1988 return rc; 1989 1990 memcpy(&get_feat_ctx->offload, &get_resp.u.offload, 1991 sizeof(get_resp.u.offload)); 1992 1993 /* Driver hints isn't mandatory admin command. So in case the 1994 * command isn't supported set driver hints to 0 1995 */ 1996 rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_HW_HINTS, 0); 1997 1998 if (!rc) 1999 memcpy(&get_feat_ctx->hw_hints, &get_resp.u.hw_hints, sizeof(get_resp.u.hw_hints)); 2000 else if (rc == -EOPNOTSUPP) 2001 memset(&get_feat_ctx->hw_hints, 0x0, sizeof(get_feat_ctx->hw_hints)); 2002 else 2003 return rc; 2004 2005 rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_LLQ, 0); 2006 if (!rc) 2007 memcpy(&get_feat_ctx->llq, &get_resp.u.llq, sizeof(get_resp.u.llq)); 2008 else if (rc == -EOPNOTSUPP) 2009 memset(&get_feat_ctx->llq, 0x0, sizeof(get_feat_ctx->llq)); 2010 else 2011 return rc; 2012 2013 ena_com_set_supported_customer_metrics(ena_dev); 2014 2015 return 0; 2016 } 2017 2018 void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev) 2019 { 2020 ena_com_handle_admin_completion(&ena_dev->admin_queue); 2021 } 2022 2023 /* ena_handle_specific_aenq_event: 2024 * return the handler that is relevant to the specific event group 2025 */ 2026 static ena_aenq_handler ena_com_get_specific_aenq_cb(struct ena_com_dev *ena_dev, 2027 u16 group) 2028 { 2029 struct ena_aenq_handlers *aenq_handlers = ena_dev->aenq.aenq_handlers; 2030 2031 if ((group < ENA_MAX_HANDLERS) && aenq_handlers->handlers[group]) 2032 return aenq_handlers->handlers[group]; 2033 2034 return aenq_handlers->unimplemented_handler; 2035 } 2036 2037 /* ena_aenq_intr_handler: 2038 * handles the aenq incoming events. 2039 * pop events from the queue and apply the specific handler 2040 */ 2041 void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data) 2042 { 2043 struct ena_admin_aenq_entry *aenq_e; 2044 struct ena_admin_aenq_common_desc *aenq_common; 2045 struct ena_com_aenq *aenq = &ena_dev->aenq; 2046 u64 timestamp; 2047 ena_aenq_handler handler_cb; 2048 u16 masked_head, processed = 0; 2049 u8 phase; 2050 2051 masked_head = aenq->head & (aenq->q_depth - 1); 2052 phase = aenq->phase; 2053 aenq_e = &aenq->entries[masked_head]; /* Get first entry */ 2054 aenq_common = &aenq_e->aenq_common_desc; 2055 2056 /* Go over all the events */ 2057 while ((READ_ONCE(aenq_common->flags) & ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK) == phase) { 2058 /* Make sure the phase bit (ownership) is as expected before 2059 * reading the rest of the descriptor. 2060 */ 2061 dma_rmb(); 2062 2063 timestamp = (u64)aenq_common->timestamp_low | 2064 ((u64)aenq_common->timestamp_high << 32); 2065 2066 netdev_dbg(ena_dev->net_device, "AENQ! Group[%x] Syndrome[%x] timestamp: [%llus]\n", 2067 aenq_common->group, aenq_common->syndrome, timestamp); 2068 2069 /* Handle specific event*/ 2070 handler_cb = ena_com_get_specific_aenq_cb(ena_dev, 2071 aenq_common->group); 2072 handler_cb(data, aenq_e); /* call the actual event handler*/ 2073 2074 /* Get next event entry */ 2075 masked_head++; 2076 processed++; 2077 2078 if (unlikely(masked_head == aenq->q_depth)) { 2079 masked_head = 0; 2080 phase = !phase; 2081 } 2082 aenq_e = &aenq->entries[masked_head]; 2083 aenq_common = &aenq_e->aenq_common_desc; 2084 } 2085 2086 aenq->head += processed; 2087 aenq->phase = phase; 2088 2089 /* Don't update aenq doorbell if there weren't any processed events */ 2090 if (!processed) 2091 return; 2092 2093 /* write the aenq doorbell after all AENQ descriptors were read */ 2094 mb(); 2095 writel_relaxed((u32)aenq->head, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF); 2096 } 2097 2098 int ena_com_dev_reset(struct ena_com_dev *ena_dev, 2099 enum ena_regs_reset_reason_types reset_reason) 2100 { 2101 u32 stat, timeout, cap, reset_val; 2102 int rc; 2103 2104 stat = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); 2105 cap = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF); 2106 2107 if (unlikely((stat == ENA_MMIO_READ_TIMEOUT) || (cap == ENA_MMIO_READ_TIMEOUT))) { 2108 netdev_err(ena_dev->net_device, "Reg read32 timeout occurred\n"); 2109 return -ETIME; 2110 } 2111 2112 if ((stat & ENA_REGS_DEV_STS_READY_MASK) == 0) { 2113 netdev_err(ena_dev->net_device, "Device isn't ready, can't reset device\n"); 2114 return -EINVAL; 2115 } 2116 2117 timeout = (cap & ENA_REGS_CAPS_RESET_TIMEOUT_MASK) >> 2118 ENA_REGS_CAPS_RESET_TIMEOUT_SHIFT; 2119 if (timeout == 0) { 2120 netdev_err(ena_dev->net_device, "Invalid timeout value\n"); 2121 return -EINVAL; 2122 } 2123 2124 /* start reset */ 2125 reset_val = ENA_REGS_DEV_CTL_DEV_RESET_MASK; 2126 reset_val |= (reset_reason << ENA_REGS_DEV_CTL_RESET_REASON_SHIFT) & 2127 ENA_REGS_DEV_CTL_RESET_REASON_MASK; 2128 writel(reset_val, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF); 2129 2130 /* Write again the MMIO read request address */ 2131 ena_com_mmio_reg_read_request_write_dev_addr(ena_dev); 2132 2133 rc = wait_for_reset_state(ena_dev, timeout, 2134 ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK); 2135 if (rc != 0) { 2136 netdev_err(ena_dev->net_device, "Reset indication didn't turn on\n"); 2137 return rc; 2138 } 2139 2140 /* reset done */ 2141 writel(0, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF); 2142 rc = wait_for_reset_state(ena_dev, timeout, 0); 2143 if (rc != 0) { 2144 netdev_err(ena_dev->net_device, "Reset indication didn't turn off\n"); 2145 return rc; 2146 } 2147 2148 timeout = (cap & ENA_REGS_CAPS_ADMIN_CMD_TO_MASK) >> 2149 ENA_REGS_CAPS_ADMIN_CMD_TO_SHIFT; 2150 if (timeout) 2151 /* the resolution of timeout reg is 100ms */ 2152 ena_dev->admin_queue.completion_timeout = timeout * 100000; 2153 else 2154 ena_dev->admin_queue.completion_timeout = ADMIN_CMD_TIMEOUT_US; 2155 2156 return 0; 2157 } 2158 2159 int ena_com_get_eni_stats(struct ena_com_dev *ena_dev, 2160 struct ena_admin_eni_stats *stats) 2161 { 2162 struct ena_com_stats_ctx ctx; 2163 int ret; 2164 2165 if (!ena_com_get_cap(ena_dev, ENA_ADMIN_ENI_STATS)) { 2166 netdev_err(ena_dev->net_device, "Capability %d isn't supported\n", 2167 ENA_ADMIN_ENI_STATS); 2168 return -EOPNOTSUPP; 2169 } 2170 2171 memset(&ctx, 0x0, sizeof(ctx)); 2172 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_ENI); 2173 if (likely(ret == 0)) 2174 memcpy(stats, &ctx.get_resp.u.eni_stats, 2175 sizeof(ctx.get_resp.u.eni_stats)); 2176 2177 return ret; 2178 } 2179 2180 int ena_com_get_ena_srd_info(struct ena_com_dev *ena_dev, 2181 struct ena_admin_ena_srd_info *info) 2182 { 2183 struct ena_com_stats_ctx ctx; 2184 int ret; 2185 2186 if (!ena_com_get_cap(ena_dev, ENA_ADMIN_ENA_SRD_INFO)) { 2187 netdev_err(ena_dev->net_device, "Capability %d isn't supported\n", 2188 ENA_ADMIN_ENA_SRD_INFO); 2189 return -EOPNOTSUPP; 2190 } 2191 2192 memset(&ctx, 0x0, sizeof(ctx)); 2193 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_ENA_SRD); 2194 if (likely(ret == 0)) 2195 memcpy(info, &ctx.get_resp.u.ena_srd_info, 2196 sizeof(ctx.get_resp.u.ena_srd_info)); 2197 2198 return ret; 2199 } 2200 2201 int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev, 2202 struct ena_admin_basic_stats *stats) 2203 { 2204 struct ena_com_stats_ctx ctx; 2205 int ret; 2206 2207 memset(&ctx, 0x0, sizeof(ctx)); 2208 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_BASIC); 2209 if (likely(ret == 0)) 2210 memcpy(stats, &ctx.get_resp.u.basic_stats, 2211 sizeof(ctx.get_resp.u.basic_stats)); 2212 2213 return ret; 2214 } 2215 2216 int ena_com_get_customer_metrics(struct ena_com_dev *ena_dev, char *buffer, u32 len) 2217 { 2218 struct ena_admin_aq_get_stats_cmd *get_cmd; 2219 struct ena_com_stats_ctx ctx; 2220 int ret; 2221 2222 if (unlikely(len > ena_dev->customer_metrics.buffer_len)) { 2223 netdev_err(ena_dev->net_device, 2224 "Invalid buffer size %u. The given buffer is too big.\n", len); 2225 return -EINVAL; 2226 } 2227 2228 if (!ena_com_get_cap(ena_dev, ENA_ADMIN_CUSTOMER_METRICS)) { 2229 netdev_err(ena_dev->net_device, "Capability %d not supported.\n", 2230 ENA_ADMIN_CUSTOMER_METRICS); 2231 return -EOPNOTSUPP; 2232 } 2233 2234 if (!ena_dev->customer_metrics.supported_metrics) { 2235 netdev_err(ena_dev->net_device, "No supported customer metrics.\n"); 2236 return -EOPNOTSUPP; 2237 } 2238 2239 get_cmd = &ctx.get_cmd; 2240 memset(&ctx, 0x0, sizeof(ctx)); 2241 ret = ena_com_mem_addr_set(ena_dev, 2242 &get_cmd->u.control_buffer.address, 2243 ena_dev->customer_metrics.buffer_dma_addr); 2244 if (unlikely(ret)) { 2245 netdev_err(ena_dev->net_device, "Memory address set failed.\n"); 2246 return ret; 2247 } 2248 2249 get_cmd->u.control_buffer.length = ena_dev->customer_metrics.buffer_len; 2250 get_cmd->requested_metrics = ena_dev->customer_metrics.supported_metrics; 2251 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_CUSTOMER_METRICS); 2252 if (likely(ret == 0)) 2253 memcpy(buffer, ena_dev->customer_metrics.buffer_virt_addr, len); 2254 else 2255 netdev_err(ena_dev->net_device, "Failed to get customer metrics. error: %d\n", ret); 2256 2257 return ret; 2258 } 2259 2260 int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, u32 mtu) 2261 { 2262 struct ena_com_admin_queue *admin_queue; 2263 struct ena_admin_set_feat_cmd cmd; 2264 struct ena_admin_set_feat_resp resp; 2265 int ret; 2266 2267 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_MTU)) { 2268 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_MTU); 2269 return -EOPNOTSUPP; 2270 } 2271 2272 memset(&cmd, 0x0, sizeof(cmd)); 2273 admin_queue = &ena_dev->admin_queue; 2274 2275 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 2276 cmd.aq_common_descriptor.flags = 0; 2277 cmd.feat_common.feature_id = ENA_ADMIN_MTU; 2278 cmd.u.mtu.mtu = mtu; 2279 2280 ret = ena_com_execute_admin_command(admin_queue, 2281 (struct ena_admin_aq_entry *)&cmd, 2282 sizeof(cmd), 2283 (struct ena_admin_acq_entry *)&resp, 2284 sizeof(resp)); 2285 2286 if (unlikely(ret)) 2287 netdev_err(ena_dev->net_device, "Failed to set mtu %d. error: %d\n", mtu, ret); 2288 2289 return ret; 2290 } 2291 2292 int ena_com_get_offload_settings(struct ena_com_dev *ena_dev, 2293 struct ena_admin_feature_offload_desc *offload) 2294 { 2295 int ret; 2296 struct ena_admin_get_feat_resp resp; 2297 2298 ret = ena_com_get_feature(ena_dev, &resp, 2299 ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0); 2300 if (unlikely(ret)) { 2301 netdev_err(ena_dev->net_device, "Failed to get offload capabilities %d\n", ret); 2302 return ret; 2303 } 2304 2305 memcpy(offload, &resp.u.offload, sizeof(resp.u.offload)); 2306 2307 return 0; 2308 } 2309 2310 int ena_com_set_hash_function(struct ena_com_dev *ena_dev) 2311 { 2312 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 2313 struct ena_rss *rss = &ena_dev->rss; 2314 struct ena_admin_set_feat_cmd cmd; 2315 struct ena_admin_set_feat_resp resp; 2316 struct ena_admin_get_feat_resp get_resp; 2317 int ret; 2318 2319 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_FUNCTION)) { 2320 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", 2321 ENA_ADMIN_RSS_HASH_FUNCTION); 2322 return -EOPNOTSUPP; 2323 } 2324 2325 /* Validate hash function is supported */ 2326 ret = ena_com_get_feature(ena_dev, &get_resp, 2327 ENA_ADMIN_RSS_HASH_FUNCTION, 0); 2328 if (unlikely(ret)) 2329 return ret; 2330 2331 if (!(get_resp.u.flow_hash_func.supported_func & BIT(rss->hash_func))) { 2332 netdev_err(ena_dev->net_device, "Func hash %d isn't supported by device, abort\n", 2333 rss->hash_func); 2334 return -EOPNOTSUPP; 2335 } 2336 2337 memset(&cmd, 0x0, sizeof(cmd)); 2338 2339 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 2340 cmd.aq_common_descriptor.flags = 2341 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; 2342 cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_FUNCTION; 2343 cmd.u.flow_hash_func.init_val = rss->hash_init_val; 2344 cmd.u.flow_hash_func.selected_func = 1 << rss->hash_func; 2345 2346 ret = ena_com_mem_addr_set(ena_dev, 2347 &cmd.control_buffer.address, 2348 rss->hash_key_dma_addr); 2349 if (unlikely(ret)) { 2350 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 2351 return ret; 2352 } 2353 2354 cmd.control_buffer.length = sizeof(*rss->hash_key); 2355 2356 ret = ena_com_execute_admin_command(admin_queue, 2357 (struct ena_admin_aq_entry *)&cmd, 2358 sizeof(cmd), 2359 (struct ena_admin_acq_entry *)&resp, 2360 sizeof(resp)); 2361 if (unlikely(ret)) { 2362 netdev_err(ena_dev->net_device, "Failed to set hash function %d. error: %d\n", 2363 rss->hash_func, ret); 2364 return -EINVAL; 2365 } 2366 2367 return 0; 2368 } 2369 2370 int ena_com_fill_hash_function(struct ena_com_dev *ena_dev, 2371 enum ena_admin_hash_functions func, 2372 const u8 *key, u16 key_len, u32 init_val) 2373 { 2374 struct ena_admin_feature_rss_flow_hash_control *hash_key; 2375 struct ena_admin_get_feat_resp get_resp; 2376 enum ena_admin_hash_functions old_func; 2377 struct ena_rss *rss = &ena_dev->rss; 2378 int rc; 2379 2380 hash_key = rss->hash_key; 2381 2382 /* Make sure size is a mult of DWs */ 2383 if (unlikely(key_len & 0x3)) 2384 return -EINVAL; 2385 2386 rc = ena_com_get_feature_ex(ena_dev, &get_resp, 2387 ENA_ADMIN_RSS_HASH_FUNCTION, 2388 rss->hash_key_dma_addr, 2389 sizeof(*rss->hash_key), 0); 2390 if (unlikely(rc)) 2391 return rc; 2392 2393 if (!(BIT(func) & get_resp.u.flow_hash_func.supported_func)) { 2394 netdev_err(ena_dev->net_device, "Flow hash function %d isn't supported\n", func); 2395 return -EOPNOTSUPP; 2396 } 2397 2398 if ((func == ENA_ADMIN_TOEPLITZ) && key) { 2399 if (key_len != sizeof(hash_key->key)) { 2400 netdev_err(ena_dev->net_device, 2401 "key len (%u) doesn't equal the supported size (%zu)\n", key_len, 2402 sizeof(hash_key->key)); 2403 return -EINVAL; 2404 } 2405 memcpy(hash_key->key, key, key_len); 2406 hash_key->key_parts = key_len / sizeof(hash_key->key[0]); 2407 } 2408 2409 rss->hash_init_val = init_val; 2410 old_func = rss->hash_func; 2411 rss->hash_func = func; 2412 rc = ena_com_set_hash_function(ena_dev); 2413 2414 /* Restore the old function */ 2415 if (unlikely(rc)) 2416 rss->hash_func = old_func; 2417 2418 return rc; 2419 } 2420 2421 int ena_com_get_hash_function(struct ena_com_dev *ena_dev, 2422 enum ena_admin_hash_functions *func) 2423 { 2424 struct ena_rss *rss = &ena_dev->rss; 2425 struct ena_admin_get_feat_resp get_resp; 2426 int rc; 2427 2428 if (unlikely(!func)) 2429 return -EINVAL; 2430 2431 rc = ena_com_get_feature_ex(ena_dev, &get_resp, 2432 ENA_ADMIN_RSS_HASH_FUNCTION, 2433 rss->hash_key_dma_addr, 2434 sizeof(*rss->hash_key), 0); 2435 if (unlikely(rc)) 2436 return rc; 2437 2438 /* ffs() returns 1 in case the lsb is set */ 2439 rss->hash_func = ffs(get_resp.u.flow_hash_func.selected_func); 2440 if (rss->hash_func) 2441 rss->hash_func--; 2442 2443 *func = rss->hash_func; 2444 2445 return 0; 2446 } 2447 2448 int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key) 2449 { 2450 struct ena_admin_feature_rss_flow_hash_control *hash_key = 2451 ena_dev->rss.hash_key; 2452 2453 if (key) 2454 memcpy(key, hash_key->key, 2455 (size_t)(hash_key->key_parts) * sizeof(hash_key->key[0])); 2456 2457 return 0; 2458 } 2459 2460 int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev, 2461 enum ena_admin_flow_hash_proto proto, 2462 u16 *fields) 2463 { 2464 struct ena_rss *rss = &ena_dev->rss; 2465 struct ena_admin_get_feat_resp get_resp; 2466 int rc; 2467 2468 rc = ena_com_get_feature_ex(ena_dev, &get_resp, 2469 ENA_ADMIN_RSS_HASH_INPUT, 2470 rss->hash_ctrl_dma_addr, 2471 sizeof(*rss->hash_ctrl), 0); 2472 if (unlikely(rc)) 2473 return rc; 2474 2475 if (fields) 2476 *fields = rss->hash_ctrl->selected_fields[proto].fields; 2477 2478 return 0; 2479 } 2480 2481 int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev) 2482 { 2483 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 2484 struct ena_rss *rss = &ena_dev->rss; 2485 struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl; 2486 struct ena_admin_set_feat_cmd cmd; 2487 struct ena_admin_set_feat_resp resp; 2488 int ret; 2489 2490 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_INPUT)) { 2491 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", 2492 ENA_ADMIN_RSS_HASH_INPUT); 2493 return -EOPNOTSUPP; 2494 } 2495 2496 memset(&cmd, 0x0, sizeof(cmd)); 2497 2498 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 2499 cmd.aq_common_descriptor.flags = 2500 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; 2501 cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_INPUT; 2502 cmd.u.flow_hash_input.enabled_input_sort = 2503 ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK | 2504 ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK; 2505 2506 ret = ena_com_mem_addr_set(ena_dev, 2507 &cmd.control_buffer.address, 2508 rss->hash_ctrl_dma_addr); 2509 if (unlikely(ret)) { 2510 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 2511 return ret; 2512 } 2513 cmd.control_buffer.length = sizeof(*hash_ctrl); 2514 2515 ret = ena_com_execute_admin_command(admin_queue, 2516 (struct ena_admin_aq_entry *)&cmd, 2517 sizeof(cmd), 2518 (struct ena_admin_acq_entry *)&resp, 2519 sizeof(resp)); 2520 if (unlikely(ret)) 2521 netdev_err(ena_dev->net_device, "Failed to set hash input. error: %d\n", ret); 2522 2523 return ret; 2524 } 2525 2526 int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev) 2527 { 2528 struct ena_rss *rss = &ena_dev->rss; 2529 struct ena_admin_feature_rss_hash_control *hash_ctrl = 2530 rss->hash_ctrl; 2531 u16 available_fields = 0; 2532 int rc, i; 2533 2534 /* Get the supported hash input */ 2535 rc = ena_com_get_hash_ctrl(ena_dev, 0, NULL); 2536 if (unlikely(rc)) 2537 return rc; 2538 2539 hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP4].fields = 2540 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | 2541 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; 2542 2543 hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP4].fields = 2544 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | 2545 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; 2546 2547 hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP6].fields = 2548 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | 2549 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; 2550 2551 hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP6].fields = 2552 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | 2553 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; 2554 2555 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4].fields = 2556 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; 2557 2558 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP6].fields = 2559 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; 2560 2561 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4_FRAG].fields = 2562 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; 2563 2564 hash_ctrl->selected_fields[ENA_ADMIN_RSS_NOT_IP].fields = 2565 ENA_ADMIN_RSS_L2_DA | ENA_ADMIN_RSS_L2_SA; 2566 2567 for (i = 0; i < ENA_ADMIN_RSS_PROTO_NUM; i++) { 2568 available_fields = hash_ctrl->selected_fields[i].fields & 2569 hash_ctrl->supported_fields[i].fields; 2570 if (available_fields != hash_ctrl->selected_fields[i].fields) { 2571 netdev_err(ena_dev->net_device, 2572 "Hash control doesn't support all the desire configuration. proto %x supported %x selected %x\n", 2573 i, hash_ctrl->supported_fields[i].fields, 2574 hash_ctrl->selected_fields[i].fields); 2575 return -EOPNOTSUPP; 2576 } 2577 } 2578 2579 rc = ena_com_set_hash_ctrl(ena_dev); 2580 2581 /* In case of failure, restore the old hash ctrl */ 2582 if (unlikely(rc)) 2583 ena_com_get_hash_ctrl(ena_dev, 0, NULL); 2584 2585 return rc; 2586 } 2587 2588 int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev, 2589 enum ena_admin_flow_hash_proto proto, 2590 u16 hash_fields) 2591 { 2592 struct ena_rss *rss = &ena_dev->rss; 2593 struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl; 2594 u16 supported_fields; 2595 int rc; 2596 2597 if (proto >= ENA_ADMIN_RSS_PROTO_NUM) { 2598 netdev_err(ena_dev->net_device, "Invalid proto num (%u)\n", proto); 2599 return -EINVAL; 2600 } 2601 2602 /* Get the ctrl table */ 2603 rc = ena_com_get_hash_ctrl(ena_dev, proto, NULL); 2604 if (unlikely(rc)) 2605 return rc; 2606 2607 /* Make sure all the fields are supported */ 2608 supported_fields = hash_ctrl->supported_fields[proto].fields; 2609 if ((hash_fields & supported_fields) != hash_fields) { 2610 netdev_err(ena_dev->net_device, 2611 "Proto %d doesn't support the required fields %x. supports only: %x\n", 2612 proto, hash_fields, supported_fields); 2613 } 2614 2615 hash_ctrl->selected_fields[proto].fields = hash_fields; 2616 2617 rc = ena_com_set_hash_ctrl(ena_dev); 2618 2619 /* In case of failure, restore the old hash ctrl */ 2620 if (unlikely(rc)) 2621 ena_com_get_hash_ctrl(ena_dev, 0, NULL); 2622 2623 return 0; 2624 } 2625 2626 int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev, 2627 u16 entry_idx, u16 entry_value) 2628 { 2629 struct ena_rss *rss = &ena_dev->rss; 2630 2631 if (unlikely(entry_idx >= (1 << rss->tbl_log_size))) 2632 return -EINVAL; 2633 2634 if (unlikely((entry_value > ENA_TOTAL_NUM_QUEUES))) 2635 return -EINVAL; 2636 2637 rss->host_rss_ind_tbl[entry_idx] = entry_value; 2638 2639 return 0; 2640 } 2641 2642 int ena_com_indirect_table_set(struct ena_com_dev *ena_dev) 2643 { 2644 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; 2645 struct ena_rss *rss = &ena_dev->rss; 2646 struct ena_admin_set_feat_cmd cmd; 2647 struct ena_admin_set_feat_resp resp; 2648 int ret; 2649 2650 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG)) { 2651 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", 2652 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG); 2653 return -EOPNOTSUPP; 2654 } 2655 2656 ret = ena_com_ind_tbl_convert_to_device(ena_dev); 2657 if (ret) { 2658 netdev_err(ena_dev->net_device, 2659 "Failed to convert host indirection table to device table\n"); 2660 return ret; 2661 } 2662 2663 memset(&cmd, 0x0, sizeof(cmd)); 2664 2665 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 2666 cmd.aq_common_descriptor.flags = 2667 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; 2668 cmd.feat_common.feature_id = ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG; 2669 cmd.u.ind_table.size = rss->tbl_log_size; 2670 cmd.u.ind_table.inline_index = 0xFFFFFFFF; 2671 2672 ret = ena_com_mem_addr_set(ena_dev, 2673 &cmd.control_buffer.address, 2674 rss->rss_ind_tbl_dma_addr); 2675 if (unlikely(ret)) { 2676 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 2677 return ret; 2678 } 2679 2680 cmd.control_buffer.length = (1ULL << rss->tbl_log_size) * 2681 sizeof(struct ena_admin_rss_ind_table_entry); 2682 2683 ret = ena_com_execute_admin_command(admin_queue, 2684 (struct ena_admin_aq_entry *)&cmd, 2685 sizeof(cmd), 2686 (struct ena_admin_acq_entry *)&resp, 2687 sizeof(resp)); 2688 2689 if (unlikely(ret)) 2690 netdev_err(ena_dev->net_device, "Failed to set indirect table. error: %d\n", ret); 2691 2692 return ret; 2693 } 2694 2695 int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl) 2696 { 2697 struct ena_rss *rss = &ena_dev->rss; 2698 struct ena_admin_get_feat_resp get_resp; 2699 u32 tbl_size; 2700 int i, rc; 2701 2702 tbl_size = (1ULL << rss->tbl_log_size) * 2703 sizeof(struct ena_admin_rss_ind_table_entry); 2704 2705 rc = ena_com_get_feature_ex(ena_dev, &get_resp, 2706 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 2707 rss->rss_ind_tbl_dma_addr, 2708 tbl_size, 0); 2709 if (unlikely(rc)) 2710 return rc; 2711 2712 if (!ind_tbl) 2713 return 0; 2714 2715 for (i = 0; i < (1 << rss->tbl_log_size); i++) 2716 ind_tbl[i] = rss->host_rss_ind_tbl[i]; 2717 2718 return 0; 2719 } 2720 2721 int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 indr_tbl_log_size) 2722 { 2723 int rc; 2724 2725 memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss)); 2726 2727 rc = ena_com_indirect_table_allocate(ena_dev, indr_tbl_log_size); 2728 if (unlikely(rc)) 2729 goto err_indr_tbl; 2730 2731 /* The following function might return unsupported in case the 2732 * device doesn't support setting the key / hash function. We can safely 2733 * ignore this error and have indirection table support only. 2734 */ 2735 rc = ena_com_hash_key_allocate(ena_dev); 2736 if (likely(!rc)) 2737 ena_com_hash_key_fill_default_key(ena_dev); 2738 else if (rc != -EOPNOTSUPP) 2739 goto err_hash_key; 2740 2741 rc = ena_com_hash_ctrl_init(ena_dev); 2742 if (unlikely(rc)) 2743 goto err_hash_ctrl; 2744 2745 return 0; 2746 2747 err_hash_ctrl: 2748 ena_com_hash_key_destroy(ena_dev); 2749 err_hash_key: 2750 ena_com_indirect_table_destroy(ena_dev); 2751 err_indr_tbl: 2752 2753 return rc; 2754 } 2755 2756 void ena_com_rss_destroy(struct ena_com_dev *ena_dev) 2757 { 2758 ena_com_indirect_table_destroy(ena_dev); 2759 ena_com_hash_key_destroy(ena_dev); 2760 ena_com_hash_ctrl_destroy(ena_dev); 2761 2762 memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss)); 2763 } 2764 2765 int ena_com_allocate_host_info(struct ena_com_dev *ena_dev) 2766 { 2767 struct ena_host_attribute *host_attr = &ena_dev->host_attr; 2768 2769 host_attr->host_info = dma_alloc_coherent(ena_dev->dmadev, SZ_4K, 2770 &host_attr->host_info_dma_addr, GFP_KERNEL); 2771 if (unlikely(!host_attr->host_info)) 2772 return -ENOMEM; 2773 2774 host_attr->host_info->ena_spec_version = ((ENA_COMMON_SPEC_VERSION_MAJOR << 2775 ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) | 2776 (ENA_COMMON_SPEC_VERSION_MINOR)); 2777 2778 return 0; 2779 } 2780 2781 int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev, 2782 u32 debug_area_size) 2783 { 2784 struct ena_host_attribute *host_attr = &ena_dev->host_attr; 2785 2786 host_attr->debug_area_virt_addr = 2787 dma_alloc_coherent(ena_dev->dmadev, debug_area_size, 2788 &host_attr->debug_area_dma_addr, GFP_KERNEL); 2789 if (unlikely(!host_attr->debug_area_virt_addr)) { 2790 host_attr->debug_area_size = 0; 2791 return -ENOMEM; 2792 } 2793 2794 host_attr->debug_area_size = debug_area_size; 2795 2796 return 0; 2797 } 2798 2799 int ena_com_allocate_customer_metrics_buffer(struct ena_com_dev *ena_dev) 2800 { 2801 struct ena_customer_metrics *customer_metrics = &ena_dev->customer_metrics; 2802 2803 customer_metrics->buffer_len = ENA_CUSTOMER_METRICS_BUFFER_SIZE; 2804 customer_metrics->buffer_virt_addr = NULL; 2805 2806 customer_metrics->buffer_virt_addr = 2807 dma_alloc_coherent(ena_dev->dmadev, customer_metrics->buffer_len, 2808 &customer_metrics->buffer_dma_addr, GFP_KERNEL); 2809 if (!customer_metrics->buffer_virt_addr) { 2810 customer_metrics->buffer_len = 0; 2811 return -ENOMEM; 2812 } 2813 2814 return 0; 2815 } 2816 2817 void ena_com_delete_host_info(struct ena_com_dev *ena_dev) 2818 { 2819 struct ena_host_attribute *host_attr = &ena_dev->host_attr; 2820 2821 if (host_attr->host_info) { 2822 dma_free_coherent(ena_dev->dmadev, SZ_4K, host_attr->host_info, 2823 host_attr->host_info_dma_addr); 2824 host_attr->host_info = NULL; 2825 } 2826 } 2827 2828 void ena_com_delete_debug_area(struct ena_com_dev *ena_dev) 2829 { 2830 struct ena_host_attribute *host_attr = &ena_dev->host_attr; 2831 2832 if (host_attr->debug_area_virt_addr) { 2833 dma_free_coherent(ena_dev->dmadev, host_attr->debug_area_size, 2834 host_attr->debug_area_virt_addr, host_attr->debug_area_dma_addr); 2835 host_attr->debug_area_virt_addr = NULL; 2836 } 2837 } 2838 2839 void ena_com_delete_customer_metrics_buffer(struct ena_com_dev *ena_dev) 2840 { 2841 struct ena_customer_metrics *customer_metrics = &ena_dev->customer_metrics; 2842 2843 if (customer_metrics->buffer_virt_addr) { 2844 dma_free_coherent(ena_dev->dmadev, customer_metrics->buffer_len, 2845 customer_metrics->buffer_virt_addr, 2846 customer_metrics->buffer_dma_addr); 2847 customer_metrics->buffer_virt_addr = NULL; 2848 customer_metrics->buffer_len = 0; 2849 } 2850 } 2851 2852 int ena_com_set_host_attributes(struct ena_com_dev *ena_dev) 2853 { 2854 struct ena_host_attribute *host_attr = &ena_dev->host_attr; 2855 struct ena_com_admin_queue *admin_queue; 2856 struct ena_admin_set_feat_cmd cmd; 2857 struct ena_admin_set_feat_resp resp; 2858 2859 int ret; 2860 2861 /* Host attribute config is called before ena_com_get_dev_attr_feat 2862 * so ena_com can't check if the feature is supported. 2863 */ 2864 2865 memset(&cmd, 0x0, sizeof(cmd)); 2866 admin_queue = &ena_dev->admin_queue; 2867 2868 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; 2869 cmd.feat_common.feature_id = ENA_ADMIN_HOST_ATTR_CONFIG; 2870 2871 ret = ena_com_mem_addr_set(ena_dev, 2872 &cmd.u.host_attr.debug_ba, 2873 host_attr->debug_area_dma_addr); 2874 if (unlikely(ret)) { 2875 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 2876 return ret; 2877 } 2878 2879 ret = ena_com_mem_addr_set(ena_dev, 2880 &cmd.u.host_attr.os_info_ba, 2881 host_attr->host_info_dma_addr); 2882 if (unlikely(ret)) { 2883 netdev_err(ena_dev->net_device, "Memory address set failed\n"); 2884 return ret; 2885 } 2886 2887 cmd.u.host_attr.debug_area_size = host_attr->debug_area_size; 2888 2889 ret = ena_com_execute_admin_command(admin_queue, 2890 (struct ena_admin_aq_entry *)&cmd, 2891 sizeof(cmd), 2892 (struct ena_admin_acq_entry *)&resp, 2893 sizeof(resp)); 2894 2895 if (unlikely(ret)) 2896 netdev_err(ena_dev->net_device, "Failed to set host attributes: %d\n", ret); 2897 2898 return ret; 2899 } 2900 2901 /* Interrupt moderation */ 2902 bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev) 2903 { 2904 return ena_com_check_supported_feature_id(ena_dev, 2905 ENA_ADMIN_INTERRUPT_MODERATION); 2906 } 2907 2908 static int ena_com_update_nonadaptive_moderation_interval(struct ena_com_dev *ena_dev, 2909 u32 coalesce_usecs, 2910 u32 intr_delay_resolution, 2911 u32 *intr_moder_interval) 2912 { 2913 if (!intr_delay_resolution) { 2914 netdev_err(ena_dev->net_device, "Illegal interrupt delay granularity value\n"); 2915 return -EFAULT; 2916 } 2917 2918 *intr_moder_interval = coalesce_usecs / intr_delay_resolution; 2919 2920 return 0; 2921 } 2922 2923 int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev, 2924 u32 tx_coalesce_usecs) 2925 { 2926 return ena_com_update_nonadaptive_moderation_interval(ena_dev, 2927 tx_coalesce_usecs, 2928 ena_dev->intr_delay_resolution, 2929 &ena_dev->intr_moder_tx_interval); 2930 } 2931 2932 int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev, 2933 u32 rx_coalesce_usecs) 2934 { 2935 return ena_com_update_nonadaptive_moderation_interval(ena_dev, 2936 rx_coalesce_usecs, 2937 ena_dev->intr_delay_resolution, 2938 &ena_dev->intr_moder_rx_interval); 2939 } 2940 2941 int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev) 2942 { 2943 struct ena_admin_get_feat_resp get_resp; 2944 u16 delay_resolution; 2945 int rc; 2946 2947 rc = ena_com_get_feature(ena_dev, &get_resp, 2948 ENA_ADMIN_INTERRUPT_MODERATION, 0); 2949 2950 if (rc) { 2951 if (rc == -EOPNOTSUPP) { 2952 netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", 2953 ENA_ADMIN_INTERRUPT_MODERATION); 2954 rc = 0; 2955 } else { 2956 netdev_err(ena_dev->net_device, 2957 "Failed to get interrupt moderation admin cmd. rc: %d\n", rc); 2958 } 2959 2960 /* no moderation supported, disable adaptive support */ 2961 ena_com_disable_adaptive_moderation(ena_dev); 2962 return rc; 2963 } 2964 2965 /* if moderation is supported by device we set adaptive moderation */ 2966 delay_resolution = get_resp.u.intr_moderation.intr_delay_resolution; 2967 ena_com_update_intr_delay_resolution(ena_dev, delay_resolution); 2968 2969 /* Disable adaptive moderation by default - can be enabled later */ 2970 ena_com_disable_adaptive_moderation(ena_dev); 2971 2972 return 0; 2973 } 2974 2975 unsigned int ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev) 2976 { 2977 return ena_dev->intr_moder_tx_interval; 2978 } 2979 2980 unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev) 2981 { 2982 return ena_dev->intr_moder_rx_interval; 2983 } 2984 2985 int ena_com_config_dev_mode(struct ena_com_dev *ena_dev, 2986 struct ena_admin_feature_llq_desc *llq_features, 2987 struct ena_llq_configurations *llq_default_cfg) 2988 { 2989 struct ena_com_llq_info *llq_info = &ena_dev->llq_info; 2990 int rc; 2991 2992 if (!llq_features->max_llq_num) { 2993 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 2994 return 0; 2995 } 2996 2997 rc = ena_com_config_llq_info(ena_dev, llq_features, llq_default_cfg); 2998 if (rc) 2999 return rc; 3000 3001 ena_dev->tx_max_header_size = llq_info->desc_list_entry_size - 3002 (llq_info->descs_num_before_header * sizeof(struct ena_eth_io_tx_desc)); 3003 3004 if (unlikely(ena_dev->tx_max_header_size == 0)) { 3005 netdev_err(ena_dev->net_device, "The size of the LLQ entry is smaller than needed\n"); 3006 return -EINVAL; 3007 } 3008 3009 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_DEV; 3010 3011 return 0; 3012 } 3013