1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
8 /*****************************************************************************/
9 /*****************************************************************************/
11 /* Timeout in micro-sec */
12 #define ADMIN_CMD_TIMEOUT_US (3000000)
14 #define ENA_ASYNC_QUEUE_DEPTH 16
15 #define ENA_ADMIN_QUEUE_DEPTH 32
17 #define ENA_CTRL_MAJOR 0
18 #define ENA_CTRL_MINOR 0
19 #define ENA_CTRL_SUB_MINOR 1
21 #define MIN_ENA_CTRL_VER \
22 (((ENA_CTRL_MAJOR) << \
23 (ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT)) | \
24 ((ENA_CTRL_MINOR) << \
25 (ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT)) | \
28 #define ENA_DMA_ADDR_TO_UINT32_LOW(x) ((u32)((u64)(x)))
29 #define ENA_DMA_ADDR_TO_UINT32_HIGH(x) ((u32)(((u64)(x)) >> 32))
31 #define ENA_MMIO_READ_TIMEOUT 0xFFFFFFFF
33 #define ENA_COM_BOUNCE_BUFFER_CNTRL_CNT 4
35 #define ENA_REGS_ADMIN_INTR_MASK 1
37 #define ENA_MIN_ADMIN_POLL_US 100
39 #define ENA_MAX_ADMIN_POLL_US 5000
41 /*****************************************************************************/
42 /*****************************************************************************/
43 /*****************************************************************************/
48 /* Abort - canceled by the driver */
53 ena_wait_event_t wait_event;
54 struct ena_admin_acq_entry *user_cqe;
56 enum ena_cmd_status status;
57 /* status from the device */
63 struct ena_com_stats_ctx {
64 struct ena_admin_aq_get_stats_cmd get_cmd;
65 struct ena_admin_acq_get_stats_resp get_resp;
68 static int ena_com_mem_addr_set(struct ena_com_dev *ena_dev,
69 struct ena_common_mem_addr *ena_addr,
72 if ((addr & GENMASK_ULL(ena_dev->dma_addr_bits - 1, 0)) != addr) {
73 ena_trc_err(ena_dev, "DMA address has more bits than the device supports\n");
77 ena_addr->mem_addr_low = lower_32_bits(addr);
78 ena_addr->mem_addr_high = (u16)upper_32_bits(addr);
83 static int ena_com_admin_init_sq(struct ena_com_admin_queue *admin_queue)
85 struct ena_com_dev *ena_dev = admin_queue->ena_dev;
86 struct ena_com_admin_sq *sq = &admin_queue->sq;
87 u16 size = ADMIN_SQ_SIZE(admin_queue->q_depth);
89 ENA_MEM_ALLOC_COHERENT(admin_queue->q_dmadev, size, sq->entries, sq->dma_addr,
93 ena_trc_err(ena_dev, "Memory allocation failed\n");
94 return ENA_COM_NO_MEM;
106 static int ena_com_admin_init_cq(struct ena_com_admin_queue *admin_queue)
108 struct ena_com_dev *ena_dev = admin_queue->ena_dev;
109 struct ena_com_admin_cq *cq = &admin_queue->cq;
110 u16 size = ADMIN_CQ_SIZE(admin_queue->q_depth);
112 ENA_MEM_ALLOC_COHERENT(admin_queue->q_dmadev, size, cq->entries, cq->dma_addr,
116 ena_trc_err(ena_dev, "Memory allocation failed\n");
117 return ENA_COM_NO_MEM;
126 static int ena_com_admin_init_aenq(struct ena_com_dev *ena_dev,
127 struct ena_aenq_handlers *aenq_handlers)
129 struct ena_com_aenq *aenq = &ena_dev->aenq;
130 u32 addr_low, addr_high, aenq_caps;
133 ena_dev->aenq.q_depth = ENA_ASYNC_QUEUE_DEPTH;
134 size = ADMIN_AENQ_SIZE(ENA_ASYNC_QUEUE_DEPTH);
135 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev, size,
140 if (!aenq->entries) {
141 ena_trc_err(ena_dev, "Memory allocation failed\n");
142 return ENA_COM_NO_MEM;
145 aenq->head = aenq->q_depth;
148 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(aenq->dma_addr);
149 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(aenq->dma_addr);
151 ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_LO_OFF);
152 ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_HI_OFF);
155 aenq_caps |= ena_dev->aenq.q_depth & ENA_REGS_AENQ_CAPS_AENQ_DEPTH_MASK;
156 aenq_caps |= (sizeof(struct ena_admin_aenq_entry) <<
157 ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_SHIFT) &
158 ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_MASK;
159 ENA_REG_WRITE32(ena_dev->bus, aenq_caps, ena_dev->reg_bar + ENA_REGS_AENQ_CAPS_OFF);
161 if (unlikely(!aenq_handlers)) {
162 ena_trc_err(ena_dev, "AENQ handlers pointer is NULL\n");
163 return ENA_COM_INVAL;
166 aenq->aenq_handlers = aenq_handlers;
171 static void comp_ctxt_release(struct ena_com_admin_queue *queue,
172 struct ena_comp_ctx *comp_ctx)
174 comp_ctx->occupied = false;
175 ATOMIC32_DEC(&queue->outstanding_cmds);
178 static struct ena_comp_ctx *get_comp_ctxt(struct ena_com_admin_queue *admin_queue,
179 u16 command_id, bool capture)
181 if (unlikely(command_id >= admin_queue->q_depth)) {
182 ena_trc_err(admin_queue->ena_dev,
183 "Command id is larger than the queue size. cmd_id: %u queue size %d\n",
184 command_id, admin_queue->q_depth);
188 if (unlikely(!admin_queue->comp_ctx)) {
189 ena_trc_err(admin_queue->ena_dev,
190 "Completion context is NULL\n");
194 if (unlikely(admin_queue->comp_ctx[command_id].occupied && capture)) {
195 ena_trc_err(admin_queue->ena_dev,
196 "Completion context is occupied\n");
201 ATOMIC32_INC(&admin_queue->outstanding_cmds);
202 admin_queue->comp_ctx[command_id].occupied = true;
205 return &admin_queue->comp_ctx[command_id];
208 static struct ena_comp_ctx *__ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue,
209 struct ena_admin_aq_entry *cmd,
210 size_t cmd_size_in_bytes,
211 struct ena_admin_acq_entry *comp,
212 size_t comp_size_in_bytes)
214 struct ena_comp_ctx *comp_ctx;
215 u16 tail_masked, cmd_id;
219 queue_size_mask = admin_queue->q_depth - 1;
221 tail_masked = admin_queue->sq.tail & queue_size_mask;
223 /* In case of queue FULL */
224 cnt = (u16)ATOMIC32_READ(&admin_queue->outstanding_cmds);
225 if (cnt >= admin_queue->q_depth) {
226 ena_trc_dbg(admin_queue->ena_dev, "Admin queue is full.\n");
227 admin_queue->stats.out_of_space++;
228 return ERR_PTR(ENA_COM_NO_SPACE);
231 cmd_id = admin_queue->curr_cmd_id;
233 cmd->aq_common_descriptor.flags |= admin_queue->sq.phase &
234 ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK;
236 cmd->aq_common_descriptor.command_id |= cmd_id &
237 ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK;
239 comp_ctx = get_comp_ctxt(admin_queue, cmd_id, true);
240 if (unlikely(!comp_ctx))
241 return ERR_PTR(ENA_COM_INVAL);
243 comp_ctx->status = ENA_CMD_SUBMITTED;
244 comp_ctx->comp_size = (u32)comp_size_in_bytes;
245 comp_ctx->user_cqe = comp;
246 comp_ctx->cmd_opcode = cmd->aq_common_descriptor.opcode;
248 ENA_WAIT_EVENT_CLEAR(comp_ctx->wait_event);
250 memcpy(&admin_queue->sq.entries[tail_masked], cmd, cmd_size_in_bytes);
252 admin_queue->curr_cmd_id = (admin_queue->curr_cmd_id + 1) &
255 admin_queue->sq.tail++;
256 admin_queue->stats.submitted_cmd++;
258 if (unlikely((admin_queue->sq.tail & queue_size_mask) == 0))
259 admin_queue->sq.phase = !admin_queue->sq.phase;
261 ENA_DB_SYNC(&admin_queue->sq.mem_handle);
262 ENA_REG_WRITE32(admin_queue->bus, admin_queue->sq.tail,
263 admin_queue->sq.db_addr);
268 static int ena_com_init_comp_ctxt(struct ena_com_admin_queue *admin_queue)
270 struct ena_com_dev *ena_dev = admin_queue->ena_dev;
271 size_t size = admin_queue->q_depth * sizeof(struct ena_comp_ctx);
272 struct ena_comp_ctx *comp_ctx;
275 admin_queue->comp_ctx = ENA_MEM_ALLOC(admin_queue->q_dmadev, size);
276 if (unlikely(!admin_queue->comp_ctx)) {
277 ena_trc_err(ena_dev, "Memory allocation failed\n");
278 return ENA_COM_NO_MEM;
281 for (i = 0; i < admin_queue->q_depth; i++) {
282 comp_ctx = get_comp_ctxt(admin_queue, i, false);
284 ENA_WAIT_EVENT_INIT(comp_ctx->wait_event);
290 static struct ena_comp_ctx *ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue,
291 struct ena_admin_aq_entry *cmd,
292 size_t cmd_size_in_bytes,
293 struct ena_admin_acq_entry *comp,
294 size_t comp_size_in_bytes)
296 unsigned long flags = 0;
297 struct ena_comp_ctx *comp_ctx;
299 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
300 if (unlikely(!admin_queue->running_state)) {
301 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
302 return ERR_PTR(ENA_COM_NO_DEVICE);
304 comp_ctx = __ena_com_submit_admin_cmd(admin_queue, cmd,
308 if (IS_ERR(comp_ctx))
309 admin_queue->running_state = false;
310 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
315 static int ena_com_init_io_sq(struct ena_com_dev *ena_dev,
316 struct ena_com_create_io_ctx *ctx,
317 struct ena_com_io_sq *io_sq)
322 memset(&io_sq->desc_addr, 0x0, sizeof(io_sq->desc_addr));
324 io_sq->dma_addr_bits = (u8)ena_dev->dma_addr_bits;
325 io_sq->desc_entry_size =
326 (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ?
327 sizeof(struct ena_eth_io_tx_desc) :
328 sizeof(struct ena_eth_io_rx_desc);
330 size = io_sq->desc_entry_size * io_sq->q_depth;
331 io_sq->bus = ena_dev->bus;
333 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) {
334 ENA_MEM_ALLOC_COHERENT_NODE(ena_dev->dmadev,
336 io_sq->desc_addr.virt_addr,
337 io_sq->desc_addr.phys_addr,
338 io_sq->desc_addr.mem_handle,
341 if (!io_sq->desc_addr.virt_addr) {
342 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
344 io_sq->desc_addr.virt_addr,
345 io_sq->desc_addr.phys_addr,
346 io_sq->desc_addr.mem_handle);
349 if (!io_sq->desc_addr.virt_addr) {
350 ena_trc_err(ena_dev, "Memory allocation failed\n");
351 return ENA_COM_NO_MEM;
355 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
356 /* Allocate bounce buffers */
357 io_sq->bounce_buf_ctrl.buffer_size =
358 ena_dev->llq_info.desc_list_entry_size;
359 io_sq->bounce_buf_ctrl.buffers_num =
360 ENA_COM_BOUNCE_BUFFER_CNTRL_CNT;
361 io_sq->bounce_buf_ctrl.next_to_use = 0;
363 size = io_sq->bounce_buf_ctrl.buffer_size *
364 io_sq->bounce_buf_ctrl.buffers_num;
366 ENA_MEM_ALLOC_NODE(ena_dev->dmadev,
368 io_sq->bounce_buf_ctrl.base_buffer,
371 if (!io_sq->bounce_buf_ctrl.base_buffer)
372 io_sq->bounce_buf_ctrl.base_buffer = ENA_MEM_ALLOC(ena_dev->dmadev, size);
374 if (!io_sq->bounce_buf_ctrl.base_buffer) {
375 ena_trc_err(ena_dev, "Bounce buffer memory allocation failed\n");
376 return ENA_COM_NO_MEM;
379 memcpy(&io_sq->llq_info, &ena_dev->llq_info,
380 sizeof(io_sq->llq_info));
382 /* Initiate the first bounce buffer */
383 io_sq->llq_buf_ctrl.curr_bounce_buf =
384 ena_com_get_next_bounce_buffer(&io_sq->bounce_buf_ctrl);
385 memset(io_sq->llq_buf_ctrl.curr_bounce_buf,
386 0x0, io_sq->llq_info.desc_list_entry_size);
387 io_sq->llq_buf_ctrl.descs_left_in_line =
388 io_sq->llq_info.descs_num_before_header;
389 io_sq->disable_meta_caching =
390 io_sq->llq_info.disable_meta_caching;
392 if (io_sq->llq_info.max_entries_in_tx_burst > 0)
393 io_sq->entries_in_tx_burst_left =
394 io_sq->llq_info.max_entries_in_tx_burst;
398 io_sq->next_to_comp = 0;
404 static int ena_com_init_io_cq(struct ena_com_dev *ena_dev,
405 struct ena_com_create_io_ctx *ctx,
406 struct ena_com_io_cq *io_cq)
411 memset(&io_cq->cdesc_addr, 0x0, sizeof(io_cq->cdesc_addr));
413 /* Use the basic completion descriptor for Rx */
414 io_cq->cdesc_entry_size_in_bytes =
415 (io_cq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ?
416 sizeof(struct ena_eth_io_tx_cdesc) :
417 sizeof(struct ena_eth_io_rx_cdesc_base);
419 size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth;
420 io_cq->bus = ena_dev->bus;
422 ENA_MEM_ALLOC_COHERENT_NODE_ALIGNED(ena_dev->dmadev,
424 io_cq->cdesc_addr.virt_addr,
425 io_cq->cdesc_addr.phys_addr,
426 io_cq->cdesc_addr.mem_handle,
429 ENA_CDESC_RING_SIZE_ALIGNMENT);
430 if (!io_cq->cdesc_addr.virt_addr) {
431 ENA_MEM_ALLOC_COHERENT_ALIGNED(ena_dev->dmadev,
433 io_cq->cdesc_addr.virt_addr,
434 io_cq->cdesc_addr.phys_addr,
435 io_cq->cdesc_addr.mem_handle,
436 ENA_CDESC_RING_SIZE_ALIGNMENT);
439 if (!io_cq->cdesc_addr.virt_addr) {
440 ena_trc_err(ena_dev, "Memory allocation failed\n");
441 return ENA_COM_NO_MEM;
450 static void ena_com_handle_single_admin_completion(struct ena_com_admin_queue *admin_queue,
451 struct ena_admin_acq_entry *cqe)
453 struct ena_comp_ctx *comp_ctx;
456 cmd_id = cqe->acq_common_descriptor.command &
457 ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK;
459 comp_ctx = get_comp_ctxt(admin_queue, cmd_id, false);
460 if (unlikely(!comp_ctx)) {
461 ena_trc_err(admin_queue->ena_dev,
462 "comp_ctx is NULL. Changing the admin queue running state\n");
463 admin_queue->running_state = false;
467 comp_ctx->status = ENA_CMD_COMPLETED;
468 comp_ctx->comp_status = cqe->acq_common_descriptor.status;
470 if (comp_ctx->user_cqe)
471 memcpy(comp_ctx->user_cqe, (void *)cqe, comp_ctx->comp_size);
473 if (!admin_queue->polling)
474 ENA_WAIT_EVENT_SIGNAL(comp_ctx->wait_event);
477 static void ena_com_handle_admin_completion(struct ena_com_admin_queue *admin_queue)
479 struct ena_admin_acq_entry *cqe = NULL;
484 head_masked = admin_queue->cq.head & (admin_queue->q_depth - 1);
485 phase = admin_queue->cq.phase;
487 cqe = &admin_queue->cq.entries[head_masked];
489 /* Go over all the completions */
490 while ((READ_ONCE8(cqe->acq_common_descriptor.flags) &
491 ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) {
492 /* Do not read the rest of the completion entry before the
493 * phase bit was validated
496 ena_com_handle_single_admin_completion(admin_queue, cqe);
500 if (unlikely(head_masked == admin_queue->q_depth)) {
505 cqe = &admin_queue->cq.entries[head_masked];
508 admin_queue->cq.head += comp_num;
509 admin_queue->cq.phase = phase;
510 admin_queue->sq.head += comp_num;
511 admin_queue->stats.completed_cmd += comp_num;
514 static int ena_com_comp_status_to_errno(struct ena_com_admin_queue *admin_queue,
517 if (unlikely(comp_status != 0))
518 ena_trc_err(admin_queue->ena_dev,
519 "Admin command failed[%u]\n", comp_status);
521 switch (comp_status) {
522 case ENA_ADMIN_SUCCESS:
524 case ENA_ADMIN_RESOURCE_ALLOCATION_FAILURE:
525 return ENA_COM_NO_MEM;
526 case ENA_ADMIN_UNSUPPORTED_OPCODE:
527 return ENA_COM_UNSUPPORTED;
528 case ENA_ADMIN_BAD_OPCODE:
529 case ENA_ADMIN_MALFORMED_REQUEST:
530 case ENA_ADMIN_ILLEGAL_PARAMETER:
531 case ENA_ADMIN_UNKNOWN_ERROR:
532 return ENA_COM_INVAL;
533 case ENA_ADMIN_RESOURCE_BUSY:
534 return ENA_COM_TRY_AGAIN;
537 return ENA_COM_INVAL;
540 static void ena_delay_exponential_backoff_us(u32 exp, u32 delay_us)
542 delay_us = ENA_MAX32(ENA_MIN_ADMIN_POLL_US, delay_us);
543 delay_us = ENA_MIN32(delay_us * (1U << exp), ENA_MAX_ADMIN_POLL_US);
544 ENA_USLEEP(delay_us);
547 static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_ctx,
548 struct ena_com_admin_queue *admin_queue)
550 unsigned long flags = 0;
555 timeout = ENA_GET_SYSTEM_TIMEOUT(admin_queue->completion_timeout);
558 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
559 ena_com_handle_admin_completion(admin_queue);
560 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
562 if (comp_ctx->status != ENA_CMD_SUBMITTED)
565 if (ENA_TIME_EXPIRE(timeout)) {
566 ena_trc_err(admin_queue->ena_dev,
567 "Wait for completion (polling) timeout\n");
568 /* ENA didn't have any completion */
569 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
570 admin_queue->stats.no_completion++;
571 admin_queue->running_state = false;
572 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
574 ret = ENA_COM_TIMER_EXPIRED;
578 ena_delay_exponential_backoff_us(exp++,
579 admin_queue->ena_dev->ena_min_poll_delay_us);
582 if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) {
583 ena_trc_err(admin_queue->ena_dev, "Command was aborted\n");
584 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
585 admin_queue->stats.aborted_cmd++;
586 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
587 ret = ENA_COM_NO_DEVICE;
591 ENA_WARN(comp_ctx->status != ENA_CMD_COMPLETED,
592 admin_queue->ena_dev, "Invalid comp status %d\n",
595 ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status);
597 comp_ctxt_release(admin_queue, comp_ctx);
602 * Set the LLQ configurations of the firmware
604 * The driver provides only the enabled feature values to the device,
605 * which in turn, checks if they are supported.
607 static int ena_com_set_llq(struct ena_com_dev *ena_dev)
609 struct ena_com_admin_queue *admin_queue;
610 struct ena_admin_set_feat_cmd cmd;
611 struct ena_admin_set_feat_resp resp;
612 struct ena_com_llq_info *llq_info = &ena_dev->llq_info;
615 memset(&cmd, 0x0, sizeof(cmd));
616 admin_queue = &ena_dev->admin_queue;
618 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
619 cmd.feat_common.feature_id = ENA_ADMIN_LLQ;
621 cmd.u.llq.header_location_ctrl_enabled = llq_info->header_location_ctrl;
622 cmd.u.llq.entry_size_ctrl_enabled = llq_info->desc_list_entry_size_ctrl;
623 cmd.u.llq.desc_num_before_header_enabled = llq_info->descs_num_before_header;
624 cmd.u.llq.descriptors_stride_ctrl_enabled = llq_info->desc_stride_ctrl;
626 cmd.u.llq.accel_mode.u.set.enabled_flags =
627 BIT(ENA_ADMIN_DISABLE_META_CACHING) |
628 BIT(ENA_ADMIN_LIMIT_TX_BURST);
630 ret = ena_com_execute_admin_command(admin_queue,
631 (struct ena_admin_aq_entry *)&cmd,
633 (struct ena_admin_acq_entry *)&resp,
637 ena_trc_err(ena_dev, "Failed to set LLQ configurations: %d\n", ret);
642 static int ena_com_config_llq_info(struct ena_com_dev *ena_dev,
643 struct ena_admin_feature_llq_desc *llq_features,
644 struct ena_llq_configurations *llq_default_cfg)
646 struct ena_com_llq_info *llq_info = &ena_dev->llq_info;
647 struct ena_admin_accel_mode_get llq_accel_mode_get;
651 memset(llq_info, 0, sizeof(*llq_info));
653 supported_feat = llq_features->header_location_ctrl_supported;
655 if (likely(supported_feat & llq_default_cfg->llq_header_location)) {
656 llq_info->header_location_ctrl =
657 llq_default_cfg->llq_header_location;
659 ena_trc_err(ena_dev, "Invalid header location control, supported: 0x%x\n",
664 if (likely(llq_info->header_location_ctrl == ENA_ADMIN_INLINE_HEADER)) {
665 supported_feat = llq_features->descriptors_stride_ctrl_supported;
666 if (likely(supported_feat & llq_default_cfg->llq_stride_ctrl)) {
667 llq_info->desc_stride_ctrl = llq_default_cfg->llq_stride_ctrl;
669 if (supported_feat & ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY) {
670 llq_info->desc_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY;
671 } else if (supported_feat & ENA_ADMIN_SINGLE_DESC_PER_ENTRY) {
672 llq_info->desc_stride_ctrl = ENA_ADMIN_SINGLE_DESC_PER_ENTRY;
674 ena_trc_err(ena_dev, "Invalid desc_stride_ctrl, supported: 0x%x\n",
679 ena_trc_err(ena_dev, "Default llq stride ctrl is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n",
680 llq_default_cfg->llq_stride_ctrl,
682 llq_info->desc_stride_ctrl);
685 llq_info->desc_stride_ctrl = 0;
688 supported_feat = llq_features->entry_size_ctrl_supported;
689 if (likely(supported_feat & llq_default_cfg->llq_ring_entry_size)) {
690 llq_info->desc_list_entry_size_ctrl = llq_default_cfg->llq_ring_entry_size;
691 llq_info->desc_list_entry_size = llq_default_cfg->llq_ring_entry_size_value;
693 if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_128B) {
694 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_128B;
695 llq_info->desc_list_entry_size = 128;
696 } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_192B) {
697 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_192B;
698 llq_info->desc_list_entry_size = 192;
699 } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_256B) {
700 llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_256B;
701 llq_info->desc_list_entry_size = 256;
703 ena_trc_err(ena_dev, "Invalid entry_size_ctrl, supported: 0x%x\n",
708 ena_trc_err(ena_dev, "Default llq ring entry size is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n",
709 llq_default_cfg->llq_ring_entry_size,
711 llq_info->desc_list_entry_size);
713 if (unlikely(llq_info->desc_list_entry_size & 0x7)) {
714 /* The desc list entry size should be whole multiply of 8
715 * This requirement comes from __iowrite64_copy()
717 ena_trc_err(ena_dev, "Illegal entry size %d\n",
718 llq_info->desc_list_entry_size);
722 if (llq_info->desc_stride_ctrl == ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY)
723 llq_info->descs_per_entry = llq_info->desc_list_entry_size /
724 sizeof(struct ena_eth_io_tx_desc);
726 llq_info->descs_per_entry = 1;
728 supported_feat = llq_features->desc_num_before_header_supported;
729 if (likely(supported_feat & llq_default_cfg->llq_num_decs_before_header)) {
730 llq_info->descs_num_before_header = llq_default_cfg->llq_num_decs_before_header;
732 if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2) {
733 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2;
734 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1) {
735 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1;
736 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4) {
737 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4;
738 } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8) {
739 llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8;
741 ena_trc_err(ena_dev, "Invalid descs_num_before_header, supported: 0x%x\n",
746 ena_trc_err(ena_dev, "Default llq num descs before header is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n",
747 llq_default_cfg->llq_num_decs_before_header,
749 llq_info->descs_num_before_header);
751 /* Check for accelerated queue supported */
752 llq_accel_mode_get = llq_features->accel_mode.u.get;
754 llq_info->disable_meta_caching =
755 !!(llq_accel_mode_get.supported_flags &
756 BIT(ENA_ADMIN_DISABLE_META_CACHING));
758 if (llq_accel_mode_get.supported_flags & BIT(ENA_ADMIN_LIMIT_TX_BURST))
759 llq_info->max_entries_in_tx_burst =
760 llq_accel_mode_get.max_tx_burst_size /
761 llq_default_cfg->llq_ring_entry_size_value;
763 rc = ena_com_set_llq(ena_dev);
765 ena_trc_err(ena_dev, "Cannot set LLQ configuration: %d\n", rc);
770 static int ena_com_wait_and_process_admin_cq_interrupts(struct ena_comp_ctx *comp_ctx,
771 struct ena_com_admin_queue *admin_queue)
773 unsigned long flags = 0;
776 ENA_WAIT_EVENT_WAIT(comp_ctx->wait_event,
777 admin_queue->completion_timeout);
779 /* In case the command wasn't completed find out the root cause.
780 * There might be 2 kinds of errors
781 * 1) No completion (timeout reached)
782 * 2) There is completion but the device didn't get any msi-x interrupt.
784 if (unlikely(comp_ctx->status == ENA_CMD_SUBMITTED)) {
785 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
786 ena_com_handle_admin_completion(admin_queue);
787 admin_queue->stats.no_completion++;
788 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
790 if (comp_ctx->status == ENA_CMD_COMPLETED) {
791 ena_trc_err(admin_queue->ena_dev,
792 "The ena device sent a completion but the driver didn't receive a MSI-X interrupt (cmd %d), autopolling mode is %s\n",
793 comp_ctx->cmd_opcode, admin_queue->auto_polling ? "ON" : "OFF");
794 /* Check if fallback to polling is enabled */
795 if (admin_queue->auto_polling)
796 admin_queue->polling = true;
798 ena_trc_err(admin_queue->ena_dev,
799 "The ena device didn't send a completion for the admin cmd %d status %d\n",
800 comp_ctx->cmd_opcode, comp_ctx->status);
802 /* Check if shifted to polling mode.
803 * This will happen if there is a completion without an interrupt
804 * and autopolling mode is enabled. Continuing normal execution in such case
806 if (!admin_queue->polling) {
807 admin_queue->running_state = false;
808 ret = ENA_COM_TIMER_EXPIRED;
813 ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status);
815 comp_ctxt_release(admin_queue, comp_ctx);
819 /* This method read the hardware device register through posting writes
820 * and waiting for response
821 * On timeout the function will return ENA_MMIO_READ_TIMEOUT
823 static u32 ena_com_reg_bar_read32(struct ena_com_dev *ena_dev, u16 offset)
825 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
826 volatile struct ena_admin_ena_mmio_req_read_less_resp *read_resp =
827 mmio_read->read_resp;
828 u32 mmio_read_reg, ret, i;
829 unsigned long flags = 0;
830 u32 timeout = mmio_read->reg_read_to;
835 timeout = ENA_REG_READ_TIMEOUT;
837 /* If readless is disabled, perform regular read */
838 if (!mmio_read->readless_supported)
839 return ENA_REG_READ32(ena_dev->bus, ena_dev->reg_bar + offset);
841 ENA_SPINLOCK_LOCK(mmio_read->lock, flags);
842 mmio_read->seq_num++;
844 read_resp->req_id = mmio_read->seq_num + 0xDEAD;
845 mmio_read_reg = (offset << ENA_REGS_MMIO_REG_READ_REG_OFF_SHIFT) &
846 ENA_REGS_MMIO_REG_READ_REG_OFF_MASK;
847 mmio_read_reg |= mmio_read->seq_num &
848 ENA_REGS_MMIO_REG_READ_REQ_ID_MASK;
850 ENA_REG_WRITE32(ena_dev->bus, mmio_read_reg,
851 ena_dev->reg_bar + ENA_REGS_MMIO_REG_READ_OFF);
853 for (i = 0; i < timeout; i++) {
854 if (READ_ONCE16(read_resp->req_id) == mmio_read->seq_num)
860 if (unlikely(i == timeout)) {
861 ena_trc_err(ena_dev, "Reading reg failed for timeout. expected: req id[%hu] offset[%hu] actual: req id[%hu] offset[%hu]\n",
866 ret = ENA_MMIO_READ_TIMEOUT;
870 if (read_resp->reg_off != offset) {
871 ena_trc_err(ena_dev, "Read failure: wrong offset provided\n");
872 ret = ENA_MMIO_READ_TIMEOUT;
874 ret = read_resp->reg_val;
877 ENA_SPINLOCK_UNLOCK(mmio_read->lock, flags);
882 /* There are two types to wait for completion.
883 * Polling mode - wait until the completion is available.
884 * Async mode - wait on wait queue until the completion is ready
885 * (or the timeout expired).
886 * It is expected that the IRQ called ena_com_handle_admin_completion
887 * to mark the completions.
889 static int ena_com_wait_and_process_admin_cq(struct ena_comp_ctx *comp_ctx,
890 struct ena_com_admin_queue *admin_queue)
892 if (admin_queue->polling)
893 return ena_com_wait_and_process_admin_cq_polling(comp_ctx,
896 return ena_com_wait_and_process_admin_cq_interrupts(comp_ctx,
900 static int ena_com_destroy_io_sq(struct ena_com_dev *ena_dev,
901 struct ena_com_io_sq *io_sq)
903 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
904 struct ena_admin_aq_destroy_sq_cmd destroy_cmd;
905 struct ena_admin_acq_destroy_sq_resp_desc destroy_resp;
909 memset(&destroy_cmd, 0x0, sizeof(destroy_cmd));
911 if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
912 direction = ENA_ADMIN_SQ_DIRECTION_TX;
914 direction = ENA_ADMIN_SQ_DIRECTION_RX;
916 destroy_cmd.sq.sq_identity |= (direction <<
917 ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT) &
918 ENA_ADMIN_SQ_SQ_DIRECTION_MASK;
920 destroy_cmd.sq.sq_idx = io_sq->idx;
921 destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_SQ;
923 ret = ena_com_execute_admin_command(admin_queue,
924 (struct ena_admin_aq_entry *)&destroy_cmd,
926 (struct ena_admin_acq_entry *)&destroy_resp,
927 sizeof(destroy_resp));
929 if (unlikely(ret && (ret != ENA_COM_NO_DEVICE)))
930 ena_trc_err(ena_dev, "Failed to destroy io sq error: %d\n", ret);
935 static void ena_com_io_queue_free(struct ena_com_dev *ena_dev,
936 struct ena_com_io_sq *io_sq,
937 struct ena_com_io_cq *io_cq)
941 if (io_cq->cdesc_addr.virt_addr) {
942 size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth;
944 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
946 io_cq->cdesc_addr.virt_addr,
947 io_cq->cdesc_addr.phys_addr,
948 io_cq->cdesc_addr.mem_handle);
950 io_cq->cdesc_addr.virt_addr = NULL;
953 if (io_sq->desc_addr.virt_addr) {
954 size = io_sq->desc_entry_size * io_sq->q_depth;
956 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
958 io_sq->desc_addr.virt_addr,
959 io_sq->desc_addr.phys_addr,
960 io_sq->desc_addr.mem_handle);
962 io_sq->desc_addr.virt_addr = NULL;
965 if (io_sq->bounce_buf_ctrl.base_buffer) {
966 ENA_MEM_FREE(ena_dev->dmadev,
967 io_sq->bounce_buf_ctrl.base_buffer,
968 (io_sq->llq_info.desc_list_entry_size * ENA_COM_BOUNCE_BUFFER_CNTRL_CNT));
969 io_sq->bounce_buf_ctrl.base_buffer = NULL;
973 static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout,
977 ena_time_t timeout_stamp;
979 /* Convert timeout from resolution of 100ms to us resolution. */
980 timeout_stamp = ENA_GET_SYSTEM_TIMEOUT(100 * 1000 * timeout);
983 val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
985 if (unlikely(val == ENA_MMIO_READ_TIMEOUT)) {
986 ena_trc_err(ena_dev, "Reg read timeout occurred\n");
987 return ENA_COM_TIMER_EXPIRED;
990 if ((val & ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK) ==
994 if (ENA_TIME_EXPIRE(timeout_stamp))
995 return ENA_COM_TIMER_EXPIRED;
997 ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us);
1001 static bool ena_com_check_supported_feature_id(struct ena_com_dev *ena_dev,
1002 enum ena_admin_aq_feature_id feature_id)
1004 u32 feature_mask = 1 << feature_id;
1006 /* Device attributes is always supported */
1007 if ((feature_id != ENA_ADMIN_DEVICE_ATTRIBUTES) &&
1008 !(ena_dev->supported_features & feature_mask))
1014 static int ena_com_get_feature_ex(struct ena_com_dev *ena_dev,
1015 struct ena_admin_get_feat_resp *get_resp,
1016 enum ena_admin_aq_feature_id feature_id,
1017 dma_addr_t control_buf_dma_addr,
1018 u32 control_buff_size,
1021 struct ena_com_admin_queue *admin_queue;
1022 struct ena_admin_get_feat_cmd get_cmd;
1025 if (!ena_com_check_supported_feature_id(ena_dev, feature_id)) {
1026 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n", feature_id);
1027 return ENA_COM_UNSUPPORTED;
1030 memset(&get_cmd, 0x0, sizeof(get_cmd));
1031 admin_queue = &ena_dev->admin_queue;
1033 get_cmd.aq_common_descriptor.opcode = ENA_ADMIN_GET_FEATURE;
1035 if (control_buff_size)
1036 get_cmd.aq_common_descriptor.flags =
1037 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
1039 get_cmd.aq_common_descriptor.flags = 0;
1041 ret = ena_com_mem_addr_set(ena_dev,
1042 &get_cmd.control_buffer.address,
1043 control_buf_dma_addr);
1044 if (unlikely(ret)) {
1045 ena_trc_err(ena_dev, "Memory address set failed\n");
1049 get_cmd.control_buffer.length = control_buff_size;
1050 get_cmd.feat_common.feature_version = feature_ver;
1051 get_cmd.feat_common.feature_id = feature_id;
1053 ret = ena_com_execute_admin_command(admin_queue,
1054 (struct ena_admin_aq_entry *)
1057 (struct ena_admin_acq_entry *)
1062 ena_trc_err(ena_dev, "Failed to submit get_feature command %d error: %d\n",
1068 static int ena_com_get_feature(struct ena_com_dev *ena_dev,
1069 struct ena_admin_get_feat_resp *get_resp,
1070 enum ena_admin_aq_feature_id feature_id,
1073 return ena_com_get_feature_ex(ena_dev,
1081 int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev)
1083 return ena_dev->rss.hash_func;
1086 static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev)
1088 struct ena_admin_feature_rss_flow_hash_control *hash_key =
1089 (ena_dev->rss).hash_key;
1091 ENA_RSS_FILL_KEY(&hash_key->key, sizeof(hash_key->key));
1092 /* The key buffer is stored in the device in an array of
1095 hash_key->key_parts = ENA_ADMIN_RSS_KEY_PARTS;
1098 static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev)
1100 struct ena_rss *rss = &ena_dev->rss;
1102 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_FUNCTION))
1103 return ENA_COM_UNSUPPORTED;
1105 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
1106 sizeof(*rss->hash_key),
1108 rss->hash_key_dma_addr,
1109 rss->hash_key_mem_handle);
1111 if (unlikely(!rss->hash_key))
1112 return ENA_COM_NO_MEM;
1117 static void ena_com_hash_key_destroy(struct ena_com_dev *ena_dev)
1119 struct ena_rss *rss = &ena_dev->rss;
1122 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
1123 sizeof(*rss->hash_key),
1125 rss->hash_key_dma_addr,
1126 rss->hash_key_mem_handle);
1127 rss->hash_key = NULL;
1130 static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev)
1132 struct ena_rss *rss = &ena_dev->rss;
1134 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
1135 sizeof(*rss->hash_ctrl),
1137 rss->hash_ctrl_dma_addr,
1138 rss->hash_ctrl_mem_handle);
1140 if (unlikely(!rss->hash_ctrl))
1141 return ENA_COM_NO_MEM;
1146 static void ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev)
1148 struct ena_rss *rss = &ena_dev->rss;
1151 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
1152 sizeof(*rss->hash_ctrl),
1154 rss->hash_ctrl_dma_addr,
1155 rss->hash_ctrl_mem_handle);
1156 rss->hash_ctrl = NULL;
1159 static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
1162 struct ena_rss *rss = &ena_dev->rss;
1163 struct ena_admin_get_feat_resp get_resp;
1167 ret = ena_com_get_feature(ena_dev, &get_resp,
1168 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 0);
1172 if ((get_resp.u.ind_table.min_size > log_size) ||
1173 (get_resp.u.ind_table.max_size < log_size)) {
1174 ena_trc_err(ena_dev, "Indirect table size doesn't fit. requested size: %d while min is:%d and max %d\n",
1176 1 << get_resp.u.ind_table.min_size,
1177 1 << get_resp.u.ind_table.max_size);
1178 return ENA_COM_INVAL;
1181 tbl_size = (1ULL << log_size) *
1182 sizeof(struct ena_admin_rss_ind_table_entry);
1184 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
1187 rss->rss_ind_tbl_dma_addr,
1188 rss->rss_ind_tbl_mem_handle);
1189 if (unlikely(!rss->rss_ind_tbl))
1192 tbl_size = (1ULL << log_size) * sizeof(u16);
1193 rss->host_rss_ind_tbl =
1194 ENA_MEM_ALLOC(ena_dev->dmadev, tbl_size);
1195 if (unlikely(!rss->host_rss_ind_tbl))
1198 rss->tbl_log_size = log_size;
1203 tbl_size = (1ULL << log_size) *
1204 sizeof(struct ena_admin_rss_ind_table_entry);
1206 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
1209 rss->rss_ind_tbl_dma_addr,
1210 rss->rss_ind_tbl_mem_handle);
1211 rss->rss_ind_tbl = NULL;
1213 rss->tbl_log_size = 0;
1214 return ENA_COM_NO_MEM;
1217 static void ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev)
1219 struct ena_rss *rss = &ena_dev->rss;
1220 size_t tbl_size = (1ULL << rss->tbl_log_size) *
1221 sizeof(struct ena_admin_rss_ind_table_entry);
1223 if (rss->rss_ind_tbl)
1224 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
1227 rss->rss_ind_tbl_dma_addr,
1228 rss->rss_ind_tbl_mem_handle);
1229 rss->rss_ind_tbl = NULL;
1231 if (rss->host_rss_ind_tbl)
1232 ENA_MEM_FREE(ena_dev->dmadev,
1233 rss->host_rss_ind_tbl,
1234 ((1ULL << rss->tbl_log_size) * sizeof(u16)));
1235 rss->host_rss_ind_tbl = NULL;
1238 static int ena_com_create_io_sq(struct ena_com_dev *ena_dev,
1239 struct ena_com_io_sq *io_sq, u16 cq_idx)
1241 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1242 struct ena_admin_aq_create_sq_cmd create_cmd;
1243 struct ena_admin_acq_create_sq_resp_desc cmd_completion;
1247 memset(&create_cmd, 0x0, sizeof(create_cmd));
1249 create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_SQ;
1251 if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
1252 direction = ENA_ADMIN_SQ_DIRECTION_TX;
1254 direction = ENA_ADMIN_SQ_DIRECTION_RX;
1256 create_cmd.sq_identity |= (direction <<
1257 ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT) &
1258 ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK;
1260 create_cmd.sq_caps_2 |= io_sq->mem_queue_type &
1261 ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK;
1263 create_cmd.sq_caps_2 |= (ENA_ADMIN_COMPLETION_POLICY_DESC <<
1264 ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT) &
1265 ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK;
1267 create_cmd.sq_caps_3 |=
1268 ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK;
1270 create_cmd.cq_idx = cq_idx;
1271 create_cmd.sq_depth = io_sq->q_depth;
1273 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) {
1274 ret = ena_com_mem_addr_set(ena_dev,
1276 io_sq->desc_addr.phys_addr);
1277 if (unlikely(ret)) {
1278 ena_trc_err(ena_dev, "Memory address set failed\n");
1283 ret = ena_com_execute_admin_command(admin_queue,
1284 (struct ena_admin_aq_entry *)&create_cmd,
1286 (struct ena_admin_acq_entry *)&cmd_completion,
1287 sizeof(cmd_completion));
1288 if (unlikely(ret)) {
1289 ena_trc_err(ena_dev, "Failed to create IO SQ. error: %d\n", ret);
1293 io_sq->idx = cmd_completion.sq_idx;
1295 io_sq->db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
1296 (uintptr_t)cmd_completion.sq_doorbell_offset);
1298 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
1299 io_sq->header_addr = (u8 __iomem *)((uintptr_t)ena_dev->mem_bar
1300 + cmd_completion.llq_headers_offset);
1302 io_sq->desc_addr.pbuf_dev_addr =
1303 (u8 __iomem *)((uintptr_t)ena_dev->mem_bar +
1304 cmd_completion.llq_descriptors_offset);
1307 ena_trc_dbg(ena_dev, "Created sq[%u], depth[%u]\n", io_sq->idx, io_sq->q_depth);
1312 static int ena_com_ind_tbl_convert_to_device(struct ena_com_dev *ena_dev)
1314 struct ena_rss *rss = &ena_dev->rss;
1315 struct ena_com_io_sq *io_sq;
1319 for (i = 0; i < 1 << rss->tbl_log_size; i++) {
1320 qid = rss->host_rss_ind_tbl[i];
1321 if (qid >= ENA_TOTAL_NUM_QUEUES)
1322 return ENA_COM_INVAL;
1324 io_sq = &ena_dev->io_sq_queues[qid];
1326 if (io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX)
1327 return ENA_COM_INVAL;
1329 rss->rss_ind_tbl[i].cq_idx = io_sq->idx;
1335 static void ena_com_update_intr_delay_resolution(struct ena_com_dev *ena_dev,
1336 u16 intr_delay_resolution)
1338 u16 prev_intr_delay_resolution = ena_dev->intr_delay_resolution;
1340 if (unlikely(!intr_delay_resolution)) {
1341 ena_trc_err(ena_dev, "Illegal intr_delay_resolution provided. Going to use default 1 usec resolution\n");
1342 intr_delay_resolution = ENA_DEFAULT_INTR_DELAY_RESOLUTION;
1346 ena_dev->intr_moder_rx_interval =
1347 ena_dev->intr_moder_rx_interval *
1348 prev_intr_delay_resolution /
1349 intr_delay_resolution;
1352 ena_dev->intr_moder_tx_interval =
1353 ena_dev->intr_moder_tx_interval *
1354 prev_intr_delay_resolution /
1355 intr_delay_resolution;
1357 ena_dev->intr_delay_resolution = intr_delay_resolution;
1360 /*****************************************************************************/
1361 /******************************* API ******************************/
1362 /*****************************************************************************/
1364 int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue,
1365 struct ena_admin_aq_entry *cmd,
1367 struct ena_admin_acq_entry *comp,
1370 struct ena_comp_ctx *comp_ctx;
1373 comp_ctx = ena_com_submit_admin_cmd(admin_queue, cmd, cmd_size,
1375 if (IS_ERR(comp_ctx)) {
1376 if (comp_ctx == ERR_PTR(ENA_COM_NO_DEVICE))
1377 ena_trc_dbg(admin_queue->ena_dev,
1378 "Failed to submit command [%ld]\n",
1381 ena_trc_err(admin_queue->ena_dev,
1382 "Failed to submit command [%ld]\n",
1385 return (int)PTR_ERR(comp_ctx);
1388 ret = ena_com_wait_and_process_admin_cq(comp_ctx, admin_queue);
1389 if (unlikely(ret)) {
1390 if (admin_queue->running_state)
1391 ena_trc_err(admin_queue->ena_dev,
1392 "Failed to process command. ret = %d\n", ret);
1394 ena_trc_dbg(admin_queue->ena_dev,
1395 "Failed to process command. ret = %d\n", ret);
1400 int ena_com_create_io_cq(struct ena_com_dev *ena_dev,
1401 struct ena_com_io_cq *io_cq)
1403 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1404 struct ena_admin_aq_create_cq_cmd create_cmd;
1405 struct ena_admin_acq_create_cq_resp_desc cmd_completion;
1408 memset(&create_cmd, 0x0, sizeof(create_cmd));
1410 create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_CQ;
1412 create_cmd.cq_caps_2 |= (io_cq->cdesc_entry_size_in_bytes / 4) &
1413 ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK;
1414 create_cmd.cq_caps_1 |=
1415 ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK;
1417 create_cmd.msix_vector = io_cq->msix_vector;
1418 create_cmd.cq_depth = io_cq->q_depth;
1420 ret = ena_com_mem_addr_set(ena_dev,
1422 io_cq->cdesc_addr.phys_addr);
1423 if (unlikely(ret)) {
1424 ena_trc_err(ena_dev, "Memory address set failed\n");
1428 ret = ena_com_execute_admin_command(admin_queue,
1429 (struct ena_admin_aq_entry *)&create_cmd,
1431 (struct ena_admin_acq_entry *)&cmd_completion,
1432 sizeof(cmd_completion));
1433 if (unlikely(ret)) {
1434 ena_trc_err(ena_dev, "Failed to create IO CQ. error: %d\n", ret);
1438 io_cq->idx = cmd_completion.cq_idx;
1440 io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
1441 cmd_completion.cq_interrupt_unmask_register_offset);
1443 if (cmd_completion.cq_head_db_register_offset)
1444 io_cq->cq_head_db_reg =
1445 (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
1446 cmd_completion.cq_head_db_register_offset);
1448 if (cmd_completion.numa_node_register_offset)
1449 io_cq->numa_node_cfg_reg =
1450 (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
1451 cmd_completion.numa_node_register_offset);
1453 ena_trc_dbg(ena_dev, "Created cq[%u], depth[%u]\n", io_cq->idx, io_cq->q_depth);
1458 int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid,
1459 struct ena_com_io_sq **io_sq,
1460 struct ena_com_io_cq **io_cq)
1462 if (qid >= ENA_TOTAL_NUM_QUEUES) {
1463 ena_trc_err(ena_dev, "Invalid queue number %d but the max is %d\n",
1464 qid, ENA_TOTAL_NUM_QUEUES);
1465 return ENA_COM_INVAL;
1468 *io_sq = &ena_dev->io_sq_queues[qid];
1469 *io_cq = &ena_dev->io_cq_queues[qid];
1474 void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev)
1476 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1477 struct ena_comp_ctx *comp_ctx;
1480 if (!admin_queue->comp_ctx)
1483 for (i = 0; i < admin_queue->q_depth; i++) {
1484 comp_ctx = get_comp_ctxt(admin_queue, i, false);
1485 if (unlikely(!comp_ctx))
1488 comp_ctx->status = ENA_CMD_ABORTED;
1490 ENA_WAIT_EVENT_SIGNAL(comp_ctx->wait_event);
1494 void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev)
1496 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1497 unsigned long flags = 0;
1500 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
1501 while (ATOMIC32_READ(&admin_queue->outstanding_cmds) != 0) {
1502 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
1503 ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us);
1504 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
1506 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
1509 int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev,
1510 struct ena_com_io_cq *io_cq)
1512 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1513 struct ena_admin_aq_destroy_cq_cmd destroy_cmd;
1514 struct ena_admin_acq_destroy_cq_resp_desc destroy_resp;
1517 memset(&destroy_cmd, 0x0, sizeof(destroy_cmd));
1519 destroy_cmd.cq_idx = io_cq->idx;
1520 destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_CQ;
1522 ret = ena_com_execute_admin_command(admin_queue,
1523 (struct ena_admin_aq_entry *)&destroy_cmd,
1524 sizeof(destroy_cmd),
1525 (struct ena_admin_acq_entry *)&destroy_resp,
1526 sizeof(destroy_resp));
1528 if (unlikely(ret && (ret != ENA_COM_NO_DEVICE)))
1529 ena_trc_err(ena_dev, "Failed to destroy IO CQ. error: %d\n", ret);
1534 bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev)
1536 return ena_dev->admin_queue.running_state;
1539 void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state)
1541 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1542 unsigned long flags = 0;
1544 ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
1545 ena_dev->admin_queue.running_state = state;
1546 ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
1549 void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev)
1551 u16 depth = ena_dev->aenq.q_depth;
1553 ENA_WARN(ena_dev->aenq.head != depth, ena_dev, "Invalid AENQ state\n");
1555 /* Init head_db to mark that all entries in the queue
1556 * are initially available
1558 ENA_REG_WRITE32(ena_dev->bus, depth, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF);
1561 int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag)
1563 struct ena_com_admin_queue *admin_queue;
1564 struct ena_admin_set_feat_cmd cmd;
1565 struct ena_admin_set_feat_resp resp;
1566 struct ena_admin_get_feat_resp get_resp;
1569 ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_AENQ_CONFIG, 0);
1571 ena_trc_info(ena_dev, "Can't get aenq configuration\n");
1575 if ((get_resp.u.aenq.supported_groups & groups_flag) != groups_flag) {
1576 ena_trc_warn(ena_dev, "Trying to set unsupported aenq events. supported flag: 0x%x asked flag: 0x%x\n",
1577 get_resp.u.aenq.supported_groups,
1579 return ENA_COM_UNSUPPORTED;
1582 memset(&cmd, 0x0, sizeof(cmd));
1583 admin_queue = &ena_dev->admin_queue;
1585 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
1586 cmd.aq_common_descriptor.flags = 0;
1587 cmd.feat_common.feature_id = ENA_ADMIN_AENQ_CONFIG;
1588 cmd.u.aenq.enabled_groups = groups_flag;
1590 ret = ena_com_execute_admin_command(admin_queue,
1591 (struct ena_admin_aq_entry *)&cmd,
1593 (struct ena_admin_acq_entry *)&resp,
1597 ena_trc_err(ena_dev, "Failed to config AENQ ret: %d\n", ret);
1602 int ena_com_get_dma_width(struct ena_com_dev *ena_dev)
1604 u32 caps = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF);
1607 if (unlikely(caps == ENA_MMIO_READ_TIMEOUT)) {
1608 ena_trc_err(ena_dev, "Reg read timeout occurred\n");
1609 return ENA_COM_TIMER_EXPIRED;
1612 width = (caps & ENA_REGS_CAPS_DMA_ADDR_WIDTH_MASK) >>
1613 ENA_REGS_CAPS_DMA_ADDR_WIDTH_SHIFT;
1615 ena_trc_dbg(ena_dev, "ENA dma width: %d\n", width);
1617 if ((width < 32) || width > ENA_MAX_PHYS_ADDR_SIZE_BITS) {
1618 ena_trc_err(ena_dev, "DMA width illegal value: %d\n", width);
1619 return ENA_COM_INVAL;
1622 ena_dev->dma_addr_bits = width;
1627 int ena_com_validate_version(struct ena_com_dev *ena_dev)
1631 u32 ctrl_ver_masked;
1633 /* Make sure the ENA version and the controller version are at least
1634 * as the driver expects
1636 ver = ena_com_reg_bar_read32(ena_dev, ENA_REGS_VERSION_OFF);
1637 ctrl_ver = ena_com_reg_bar_read32(ena_dev,
1638 ENA_REGS_CONTROLLER_VERSION_OFF);
1640 if (unlikely((ver == ENA_MMIO_READ_TIMEOUT) ||
1641 (ctrl_ver == ENA_MMIO_READ_TIMEOUT))) {
1642 ena_trc_err(ena_dev, "Reg read timeout occurred\n");
1643 return ENA_COM_TIMER_EXPIRED;
1646 ena_trc_info(ena_dev, "ENA device version: %d.%d\n",
1647 (ver & ENA_REGS_VERSION_MAJOR_VERSION_MASK) >>
1648 ENA_REGS_VERSION_MAJOR_VERSION_SHIFT,
1649 ver & ENA_REGS_VERSION_MINOR_VERSION_MASK);
1651 ena_trc_info(ena_dev, "ENA controller version: %d.%d.%d implementation version %d\n",
1652 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK)
1653 >> ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT,
1654 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK)
1655 >> ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT,
1656 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK),
1657 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_IMPL_ID_MASK) >>
1658 ENA_REGS_CONTROLLER_VERSION_IMPL_ID_SHIFT);
1661 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) |
1662 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) |
1663 (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK);
1665 /* Validate the ctrl version without the implementation ID */
1666 if (ctrl_ver_masked < MIN_ENA_CTRL_VER) {
1667 ena_trc_err(ena_dev, "ENA ctrl version is lower than the minimal ctrl version the driver supports\n");
1674 void ena_com_admin_destroy(struct ena_com_dev *ena_dev)
1676 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1677 struct ena_com_admin_cq *cq = &admin_queue->cq;
1678 struct ena_com_admin_sq *sq = &admin_queue->sq;
1679 struct ena_com_aenq *aenq = &ena_dev->aenq;
1682 if (admin_queue->comp_ctx) {
1683 ENA_WAIT_EVENT_DESTROY(admin_queue->comp_ctx->wait_event);
1684 ENA_MEM_FREE(ena_dev->dmadev,
1685 admin_queue->comp_ctx,
1686 (admin_queue->q_depth * sizeof(struct ena_comp_ctx)));
1689 admin_queue->comp_ctx = NULL;
1690 size = ADMIN_SQ_SIZE(admin_queue->q_depth);
1692 ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, sq->entries,
1693 sq->dma_addr, sq->mem_handle);
1696 size = ADMIN_CQ_SIZE(admin_queue->q_depth);
1698 ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, cq->entries,
1699 cq->dma_addr, cq->mem_handle);
1702 size = ADMIN_AENQ_SIZE(aenq->q_depth);
1703 if (ena_dev->aenq.entries)
1704 ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, aenq->entries,
1705 aenq->dma_addr, aenq->mem_handle);
1706 aenq->entries = NULL;
1707 ENA_SPINLOCK_DESTROY(admin_queue->q_lock);
1710 void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling)
1715 mask_value = ENA_REGS_ADMIN_INTR_MASK;
1717 ENA_REG_WRITE32(ena_dev->bus, mask_value,
1718 ena_dev->reg_bar + ENA_REGS_INTR_MASK_OFF);
1719 ena_dev->admin_queue.polling = polling;
1722 bool ena_com_get_admin_polling_mode(struct ena_com_dev *ena_dev)
1724 return ena_dev->admin_queue.polling;
1727 void ena_com_set_admin_auto_polling_mode(struct ena_com_dev *ena_dev,
1730 ena_dev->admin_queue.auto_polling = polling;
1733 int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev)
1735 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
1737 ENA_SPINLOCK_INIT(mmio_read->lock);
1738 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
1739 sizeof(*mmio_read->read_resp),
1740 mmio_read->read_resp,
1741 mmio_read->read_resp_dma_addr,
1742 mmio_read->read_resp_mem_handle);
1743 if (unlikely(!mmio_read->read_resp))
1746 ena_com_mmio_reg_read_request_write_dev_addr(ena_dev);
1748 mmio_read->read_resp->req_id = 0x0;
1749 mmio_read->seq_num = 0x0;
1750 mmio_read->readless_supported = true;
1755 ENA_SPINLOCK_DESTROY(mmio_read->lock);
1756 return ENA_COM_NO_MEM;
1759 void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported)
1761 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
1763 mmio_read->readless_supported = readless_supported;
1766 void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev)
1768 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
1770 ENA_REG_WRITE32(ena_dev->bus, 0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF);
1771 ENA_REG_WRITE32(ena_dev->bus, 0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF);
1773 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
1774 sizeof(*mmio_read->read_resp),
1775 mmio_read->read_resp,
1776 mmio_read->read_resp_dma_addr,
1777 mmio_read->read_resp_mem_handle);
1779 mmio_read->read_resp = NULL;
1780 ENA_SPINLOCK_DESTROY(mmio_read->lock);
1783 void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev)
1785 struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
1786 u32 addr_low, addr_high;
1788 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(mmio_read->read_resp_dma_addr);
1789 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(mmio_read->read_resp_dma_addr);
1791 ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF);
1792 ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF);
1795 int ena_com_admin_init(struct ena_com_dev *ena_dev,
1796 struct ena_aenq_handlers *aenq_handlers)
1798 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
1799 u32 aq_caps, acq_caps, dev_sts, addr_low, addr_high;
1802 dev_sts = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
1804 if (unlikely(dev_sts == ENA_MMIO_READ_TIMEOUT)) {
1805 ena_trc_err(ena_dev, "Reg read timeout occurred\n");
1806 return ENA_COM_TIMER_EXPIRED;
1809 if (!(dev_sts & ENA_REGS_DEV_STS_READY_MASK)) {
1810 ena_trc_err(ena_dev, "Device isn't ready, abort com init\n");
1811 return ENA_COM_NO_DEVICE;
1814 admin_queue->q_depth = ENA_ADMIN_QUEUE_DEPTH;
1816 admin_queue->bus = ena_dev->bus;
1817 admin_queue->q_dmadev = ena_dev->dmadev;
1818 admin_queue->polling = false;
1819 admin_queue->curr_cmd_id = 0;
1821 ATOMIC32_SET(&admin_queue->outstanding_cmds, 0);
1823 ENA_SPINLOCK_INIT(admin_queue->q_lock);
1825 ret = ena_com_init_comp_ctxt(admin_queue);
1829 ret = ena_com_admin_init_sq(admin_queue);
1833 ret = ena_com_admin_init_cq(admin_queue);
1837 admin_queue->sq.db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
1838 ENA_REGS_AQ_DB_OFF);
1840 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->sq.dma_addr);
1841 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->sq.dma_addr);
1843 ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_AQ_BASE_LO_OFF);
1844 ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_AQ_BASE_HI_OFF);
1846 addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->cq.dma_addr);
1847 addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->cq.dma_addr);
1849 ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_LO_OFF);
1850 ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_HI_OFF);
1853 aq_caps |= admin_queue->q_depth & ENA_REGS_AQ_CAPS_AQ_DEPTH_MASK;
1854 aq_caps |= (sizeof(struct ena_admin_aq_entry) <<
1855 ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_SHIFT) &
1856 ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_MASK;
1859 acq_caps |= admin_queue->q_depth & ENA_REGS_ACQ_CAPS_ACQ_DEPTH_MASK;
1860 acq_caps |= (sizeof(struct ena_admin_acq_entry) <<
1861 ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_SHIFT) &
1862 ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_MASK;
1864 ENA_REG_WRITE32(ena_dev->bus, aq_caps, ena_dev->reg_bar + ENA_REGS_AQ_CAPS_OFF);
1865 ENA_REG_WRITE32(ena_dev->bus, acq_caps, ena_dev->reg_bar + ENA_REGS_ACQ_CAPS_OFF);
1866 ret = ena_com_admin_init_aenq(ena_dev, aenq_handlers);
1870 admin_queue->ena_dev = ena_dev;
1871 admin_queue->running_state = true;
1875 ena_com_admin_destroy(ena_dev);
1880 int ena_com_create_io_queue(struct ena_com_dev *ena_dev,
1881 struct ena_com_create_io_ctx *ctx)
1883 struct ena_com_io_sq *io_sq;
1884 struct ena_com_io_cq *io_cq;
1887 if (ctx->qid >= ENA_TOTAL_NUM_QUEUES) {
1888 ena_trc_err(ena_dev, "Qid (%d) is bigger than max num of queues (%d)\n",
1889 ctx->qid, ENA_TOTAL_NUM_QUEUES);
1890 return ENA_COM_INVAL;
1893 io_sq = &ena_dev->io_sq_queues[ctx->qid];
1894 io_cq = &ena_dev->io_cq_queues[ctx->qid];
1896 memset(io_sq, 0x0, sizeof(*io_sq));
1897 memset(io_cq, 0x0, sizeof(*io_cq));
1900 io_cq->q_depth = ctx->queue_size;
1901 io_cq->direction = ctx->direction;
1902 io_cq->qid = ctx->qid;
1904 io_cq->msix_vector = ctx->msix_vector;
1906 io_sq->q_depth = ctx->queue_size;
1907 io_sq->direction = ctx->direction;
1908 io_sq->qid = ctx->qid;
1910 io_sq->mem_queue_type = ctx->mem_queue_type;
1912 if (ctx->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
1913 /* header length is limited to 8 bits */
1914 io_sq->tx_max_header_size =
1915 ENA_MIN32(ena_dev->tx_max_header_size, SZ_256);
1917 ret = ena_com_init_io_sq(ena_dev, ctx, io_sq);
1920 ret = ena_com_init_io_cq(ena_dev, ctx, io_cq);
1924 ret = ena_com_create_io_cq(ena_dev, io_cq);
1928 ret = ena_com_create_io_sq(ena_dev, io_sq, io_cq->idx);
1935 ena_com_destroy_io_cq(ena_dev, io_cq);
1937 ena_com_io_queue_free(ena_dev, io_sq, io_cq);
1941 void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid)
1943 struct ena_com_io_sq *io_sq;
1944 struct ena_com_io_cq *io_cq;
1946 if (qid >= ENA_TOTAL_NUM_QUEUES) {
1947 ena_trc_err(ena_dev, "Qid (%d) is bigger than max num of queues (%d)\n",
1948 qid, ENA_TOTAL_NUM_QUEUES);
1952 io_sq = &ena_dev->io_sq_queues[qid];
1953 io_cq = &ena_dev->io_cq_queues[qid];
1955 ena_com_destroy_io_sq(ena_dev, io_sq);
1956 ena_com_destroy_io_cq(ena_dev, io_cq);
1958 ena_com_io_queue_free(ena_dev, io_sq, io_cq);
1961 int ena_com_get_link_params(struct ena_com_dev *ena_dev,
1962 struct ena_admin_get_feat_resp *resp)
1964 return ena_com_get_feature(ena_dev, resp, ENA_ADMIN_LINK_CONFIG, 0);
1967 int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev,
1968 struct ena_com_dev_get_features_ctx *get_feat_ctx)
1970 struct ena_admin_get_feat_resp get_resp;
1973 rc = ena_com_get_feature(ena_dev, &get_resp,
1974 ENA_ADMIN_DEVICE_ATTRIBUTES, 0);
1978 memcpy(&get_feat_ctx->dev_attr, &get_resp.u.dev_attr,
1979 sizeof(get_resp.u.dev_attr));
1981 ena_dev->supported_features = get_resp.u.dev_attr.supported_features;
1983 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
1984 rc = ena_com_get_feature(ena_dev, &get_resp,
1985 ENA_ADMIN_MAX_QUEUES_EXT,
1986 ENA_FEATURE_MAX_QUEUE_EXT_VER);
1990 if (get_resp.u.max_queue_ext.version != ENA_FEATURE_MAX_QUEUE_EXT_VER)
1993 memcpy(&get_feat_ctx->max_queue_ext, &get_resp.u.max_queue_ext,
1994 sizeof(get_resp.u.max_queue_ext));
1995 ena_dev->tx_max_header_size =
1996 get_resp.u.max_queue_ext.max_queue_ext.max_tx_header_size;
1998 rc = ena_com_get_feature(ena_dev, &get_resp,
1999 ENA_ADMIN_MAX_QUEUES_NUM, 0);
2000 memcpy(&get_feat_ctx->max_queues, &get_resp.u.max_queue,
2001 sizeof(get_resp.u.max_queue));
2002 ena_dev->tx_max_header_size =
2003 get_resp.u.max_queue.max_header_size;
2009 rc = ena_com_get_feature(ena_dev, &get_resp,
2010 ENA_ADMIN_AENQ_CONFIG, 0);
2014 memcpy(&get_feat_ctx->aenq, &get_resp.u.aenq,
2015 sizeof(get_resp.u.aenq));
2017 rc = ena_com_get_feature(ena_dev, &get_resp,
2018 ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0);
2022 memcpy(&get_feat_ctx->offload, &get_resp.u.offload,
2023 sizeof(get_resp.u.offload));
2025 /* Driver hints isn't mandatory admin command. So in case the
2026 * command isn't supported set driver hints to 0
2028 rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_HW_HINTS, 0);
2031 memcpy(&get_feat_ctx->hw_hints, &get_resp.u.hw_hints,
2032 sizeof(get_resp.u.hw_hints));
2033 else if (rc == ENA_COM_UNSUPPORTED)
2034 memset(&get_feat_ctx->hw_hints, 0x0, sizeof(get_feat_ctx->hw_hints));
2038 rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_LLQ, 0);
2040 memcpy(&get_feat_ctx->llq, &get_resp.u.llq,
2041 sizeof(get_resp.u.llq));
2042 else if (rc == ENA_COM_UNSUPPORTED)
2043 memset(&get_feat_ctx->llq, 0x0, sizeof(get_feat_ctx->llq));
2047 rc = ena_com_get_feature(ena_dev, &get_resp,
2048 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 0);
2050 memcpy(&get_feat_ctx->ind_table, &get_resp.u.ind_table,
2051 sizeof(get_resp.u.ind_table));
2052 else if (rc == ENA_COM_UNSUPPORTED)
2053 memset(&get_feat_ctx->ind_table, 0x0,
2054 sizeof(get_feat_ctx->ind_table));
2061 void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev)
2063 ena_com_handle_admin_completion(&ena_dev->admin_queue);
2066 /* ena_handle_specific_aenq_event:
2067 * return the handler that is relevant to the specific event group
2069 static ena_aenq_handler ena_com_get_specific_aenq_cb(struct ena_com_dev *ena_dev,
2072 struct ena_aenq_handlers *aenq_handlers = ena_dev->aenq.aenq_handlers;
2074 if ((group < ENA_MAX_HANDLERS) && aenq_handlers->handlers[group])
2075 return aenq_handlers->handlers[group];
2077 return aenq_handlers->unimplemented_handler;
2080 /* ena_aenq_intr_handler:
2081 * handles the aenq incoming events.
2082 * pop events from the queue and apply the specific handler
2084 void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data)
2086 struct ena_admin_aenq_entry *aenq_e;
2087 struct ena_admin_aenq_common_desc *aenq_common;
2088 struct ena_com_aenq *aenq = &ena_dev->aenq;
2090 ena_aenq_handler handler_cb;
2091 u16 masked_head, processed = 0;
2094 masked_head = aenq->head & (aenq->q_depth - 1);
2095 phase = aenq->phase;
2096 aenq_e = &aenq->entries[masked_head]; /* Get first entry */
2097 aenq_common = &aenq_e->aenq_common_desc;
2099 /* Go over all the events */
2100 while ((READ_ONCE8(aenq_common->flags) &
2101 ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK) == phase) {
2102 /* Make sure the phase bit (ownership) is as expected before
2103 * reading the rest of the descriptor.
2107 timestamp = (u64)aenq_common->timestamp_low |
2108 ((u64)aenq_common->timestamp_high << 32);
2109 ENA_TOUCH(timestamp); /* In case debug is disabled */
2110 ena_trc_dbg(ena_dev, "AENQ! Group[%x] Syndrome[%x] timestamp: [%" ENA_PRIu64 "s]\n",
2112 aenq_common->syndrome,
2115 /* Handle specific event*/
2116 handler_cb = ena_com_get_specific_aenq_cb(ena_dev,
2117 aenq_common->group);
2118 handler_cb(data, aenq_e); /* call the actual event handler*/
2120 /* Get next event entry */
2124 if (unlikely(masked_head == aenq->q_depth)) {
2128 aenq_e = &aenq->entries[masked_head];
2129 aenq_common = &aenq_e->aenq_common_desc;
2132 aenq->head += processed;
2133 aenq->phase = phase;
2135 /* Don't update aenq doorbell if there weren't any processed events */
2139 /* write the aenq doorbell after all AENQ descriptors were read */
2141 ENA_REG_WRITE32_RELAXED(ena_dev->bus, (u32)aenq->head,
2142 ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF);
2146 int ena_com_dev_reset(struct ena_com_dev *ena_dev,
2147 enum ena_regs_reset_reason_types reset_reason)
2149 u32 stat, timeout, cap, reset_val;
2152 stat = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
2153 cap = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF);
2155 if (unlikely((stat == ENA_MMIO_READ_TIMEOUT) ||
2156 (cap == ENA_MMIO_READ_TIMEOUT))) {
2157 ena_trc_err(ena_dev, "Reg read32 timeout occurred\n");
2158 return ENA_COM_TIMER_EXPIRED;
2161 if ((stat & ENA_REGS_DEV_STS_READY_MASK) == 0) {
2162 ena_trc_err(ena_dev, "Device isn't ready, can't reset device\n");
2163 return ENA_COM_INVAL;
2166 timeout = (cap & ENA_REGS_CAPS_RESET_TIMEOUT_MASK) >>
2167 ENA_REGS_CAPS_RESET_TIMEOUT_SHIFT;
2169 ena_trc_err(ena_dev, "Invalid timeout value\n");
2170 return ENA_COM_INVAL;
2174 reset_val = ENA_REGS_DEV_CTL_DEV_RESET_MASK;
2175 reset_val |= (reset_reason << ENA_REGS_DEV_CTL_RESET_REASON_SHIFT) &
2176 ENA_REGS_DEV_CTL_RESET_REASON_MASK;
2177 ENA_REG_WRITE32(ena_dev->bus, reset_val, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF);
2179 /* Write again the MMIO read request address */
2180 ena_com_mmio_reg_read_request_write_dev_addr(ena_dev);
2182 rc = wait_for_reset_state(ena_dev, timeout,
2183 ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK);
2185 ena_trc_err(ena_dev, "Reset indication didn't turn on\n");
2190 ENA_REG_WRITE32(ena_dev->bus, 0, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF);
2191 rc = wait_for_reset_state(ena_dev, timeout, 0);
2193 ena_trc_err(ena_dev, "Reset indication didn't turn off\n");
2197 timeout = (cap & ENA_REGS_CAPS_ADMIN_CMD_TO_MASK) >>
2198 ENA_REGS_CAPS_ADMIN_CMD_TO_SHIFT;
2200 /* the resolution of timeout reg is 100ms */
2201 ena_dev->admin_queue.completion_timeout = timeout * 100000;
2203 ena_dev->admin_queue.completion_timeout = ADMIN_CMD_TIMEOUT_US;
2208 static int ena_get_dev_stats(struct ena_com_dev *ena_dev,
2209 struct ena_com_stats_ctx *ctx,
2210 enum ena_admin_get_stats_type type)
2212 struct ena_admin_aq_get_stats_cmd *get_cmd = &ctx->get_cmd;
2213 struct ena_admin_acq_get_stats_resp *get_resp = &ctx->get_resp;
2214 struct ena_com_admin_queue *admin_queue;
2217 admin_queue = &ena_dev->admin_queue;
2219 get_cmd->aq_common_descriptor.opcode = ENA_ADMIN_GET_STATS;
2220 get_cmd->aq_common_descriptor.flags = 0;
2221 get_cmd->type = type;
2223 ret = ena_com_execute_admin_command(admin_queue,
2224 (struct ena_admin_aq_entry *)get_cmd,
2226 (struct ena_admin_acq_entry *)get_resp,
2230 ena_trc_err(ena_dev, "Failed to get stats. error: %d\n", ret);
2235 int ena_com_get_eni_stats(struct ena_com_dev *ena_dev,
2236 struct ena_admin_eni_stats *stats)
2238 struct ena_com_stats_ctx ctx;
2241 memset(&ctx, 0x0, sizeof(ctx));
2242 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_ENI);
2243 if (likely(ret == 0))
2244 memcpy(stats, &ctx.get_resp.u.eni_stats,
2245 sizeof(ctx.get_resp.u.eni_stats));
2250 int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
2251 struct ena_admin_basic_stats *stats)
2253 struct ena_com_stats_ctx ctx;
2256 memset(&ctx, 0x0, sizeof(ctx));
2257 ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_BASIC);
2258 if (likely(ret == 0))
2259 memcpy(stats, &ctx.get_resp.u.basic_stats,
2260 sizeof(ctx.get_resp.u.basic_stats));
2265 int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, int mtu)
2267 struct ena_com_admin_queue *admin_queue;
2268 struct ena_admin_set_feat_cmd cmd;
2269 struct ena_admin_set_feat_resp resp;
2272 if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_MTU)) {
2273 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n", ENA_ADMIN_MTU);
2274 return ENA_COM_UNSUPPORTED;
2277 memset(&cmd, 0x0, sizeof(cmd));
2278 admin_queue = &ena_dev->admin_queue;
2280 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
2281 cmd.aq_common_descriptor.flags = 0;
2282 cmd.feat_common.feature_id = ENA_ADMIN_MTU;
2283 cmd.u.mtu.mtu = (u32)mtu;
2285 ret = ena_com_execute_admin_command(admin_queue,
2286 (struct ena_admin_aq_entry *)&cmd,
2288 (struct ena_admin_acq_entry *)&resp,
2292 ena_trc_err(ena_dev, "Failed to set mtu %d. error: %d\n", mtu, ret);
2297 int ena_com_get_offload_settings(struct ena_com_dev *ena_dev,
2298 struct ena_admin_feature_offload_desc *offload)
2301 struct ena_admin_get_feat_resp resp;
2303 ret = ena_com_get_feature(ena_dev, &resp,
2304 ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0);
2305 if (unlikely(ret)) {
2306 ena_trc_err(ena_dev, "Failed to get offload capabilities %d\n", ret);
2310 memcpy(offload, &resp.u.offload, sizeof(resp.u.offload));
2315 int ena_com_set_hash_function(struct ena_com_dev *ena_dev)
2317 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
2318 struct ena_rss *rss = &ena_dev->rss;
2319 struct ena_admin_set_feat_cmd cmd;
2320 struct ena_admin_set_feat_resp resp;
2321 struct ena_admin_get_feat_resp get_resp;
2324 if (!ena_com_check_supported_feature_id(ena_dev,
2325 ENA_ADMIN_RSS_HASH_FUNCTION)) {
2326 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n",
2327 ENA_ADMIN_RSS_HASH_FUNCTION);
2328 return ENA_COM_UNSUPPORTED;
2331 /* Validate hash function is supported */
2332 ret = ena_com_get_feature(ena_dev, &get_resp,
2333 ENA_ADMIN_RSS_HASH_FUNCTION, 0);
2337 if (!(get_resp.u.flow_hash_func.supported_func & BIT(rss->hash_func))) {
2338 ena_trc_err(ena_dev, "Func hash %d isn't supported by device, abort\n",
2340 return ENA_COM_UNSUPPORTED;
2343 memset(&cmd, 0x0, sizeof(cmd));
2345 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
2346 cmd.aq_common_descriptor.flags =
2347 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
2348 cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_FUNCTION;
2349 cmd.u.flow_hash_func.init_val = rss->hash_init_val;
2350 cmd.u.flow_hash_func.selected_func = 1 << rss->hash_func;
2352 ret = ena_com_mem_addr_set(ena_dev,
2353 &cmd.control_buffer.address,
2354 rss->hash_key_dma_addr);
2355 if (unlikely(ret)) {
2356 ena_trc_err(ena_dev, "Memory address set failed\n");
2360 cmd.control_buffer.length = sizeof(*rss->hash_key);
2362 ret = ena_com_execute_admin_command(admin_queue,
2363 (struct ena_admin_aq_entry *)&cmd,
2365 (struct ena_admin_acq_entry *)&resp,
2367 if (unlikely(ret)) {
2368 ena_trc_err(ena_dev, "Failed to set hash function %d. error: %d\n",
2369 rss->hash_func, ret);
2370 return ENA_COM_INVAL;
2376 int ena_com_fill_hash_function(struct ena_com_dev *ena_dev,
2377 enum ena_admin_hash_functions func,
2378 const u8 *key, u16 key_len, u32 init_val)
2380 struct ena_admin_feature_rss_flow_hash_control *hash_key;
2381 struct ena_admin_get_feat_resp get_resp;
2382 enum ena_admin_hash_functions old_func;
2383 struct ena_rss *rss = &ena_dev->rss;
2386 hash_key = rss->hash_key;
2388 /* Make sure size is a mult of DWs */
2389 if (unlikely(key_len & 0x3))
2390 return ENA_COM_INVAL;
2392 rc = ena_com_get_feature_ex(ena_dev, &get_resp,
2393 ENA_ADMIN_RSS_HASH_FUNCTION,
2394 rss->hash_key_dma_addr,
2395 sizeof(*rss->hash_key), 0);
2399 if (!(BIT(func) & get_resp.u.flow_hash_func.supported_func)) {
2400 ena_trc_err(ena_dev, "Flow hash function %d isn't supported\n", func);
2401 return ENA_COM_UNSUPPORTED;
2405 case ENA_ADMIN_TOEPLITZ:
2407 if (key_len != sizeof(hash_key->key)) {
2408 ena_trc_err(ena_dev, "key len (%hu) doesn't equal the supported size (%zu)\n",
2409 key_len, sizeof(hash_key->key));
2410 return ENA_COM_INVAL;
2412 memcpy(hash_key->key, key, key_len);
2413 rss->hash_init_val = init_val;
2414 hash_key->key_parts = key_len / sizeof(hash_key->key[0]);
2417 case ENA_ADMIN_CRC32:
2418 rss->hash_init_val = init_val;
2421 ena_trc_err(ena_dev, "Invalid hash function (%d)\n", func);
2422 return ENA_COM_INVAL;
2425 old_func = rss->hash_func;
2426 rss->hash_func = func;
2427 rc = ena_com_set_hash_function(ena_dev);
2429 /* Restore the old function */
2431 rss->hash_func = old_func;
2436 int ena_com_get_hash_function(struct ena_com_dev *ena_dev,
2437 enum ena_admin_hash_functions *func)
2439 struct ena_rss *rss = &ena_dev->rss;
2440 struct ena_admin_get_feat_resp get_resp;
2443 if (unlikely(!func))
2444 return ENA_COM_INVAL;
2446 rc = ena_com_get_feature_ex(ena_dev, &get_resp,
2447 ENA_ADMIN_RSS_HASH_FUNCTION,
2448 rss->hash_key_dma_addr,
2449 sizeof(*rss->hash_key), 0);
2453 /* ENA_FFS() returns 1 in case the lsb is set */
2454 rss->hash_func = ENA_FFS(get_resp.u.flow_hash_func.selected_func);
2458 *func = rss->hash_func;
2463 int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key)
2465 struct ena_admin_feature_rss_flow_hash_control *hash_key =
2466 ena_dev->rss.hash_key;
2469 memcpy(key, hash_key->key,
2470 (size_t)(hash_key->key_parts) * sizeof(hash_key->key[0]));
2475 int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev,
2476 enum ena_admin_flow_hash_proto proto,
2479 struct ena_rss *rss = &ena_dev->rss;
2480 struct ena_admin_get_feat_resp get_resp;
2483 rc = ena_com_get_feature_ex(ena_dev, &get_resp,
2484 ENA_ADMIN_RSS_HASH_INPUT,
2485 rss->hash_ctrl_dma_addr,
2486 sizeof(*rss->hash_ctrl), 0);
2491 *fields = rss->hash_ctrl->selected_fields[proto].fields;
2496 int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev)
2498 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
2499 struct ena_rss *rss = &ena_dev->rss;
2500 struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl;
2501 struct ena_admin_set_feat_cmd cmd;
2502 struct ena_admin_set_feat_resp resp;
2505 if (!ena_com_check_supported_feature_id(ena_dev,
2506 ENA_ADMIN_RSS_HASH_INPUT)) {
2507 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n",
2508 ENA_ADMIN_RSS_HASH_INPUT);
2509 return ENA_COM_UNSUPPORTED;
2512 memset(&cmd, 0x0, sizeof(cmd));
2514 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
2515 cmd.aq_common_descriptor.flags =
2516 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
2517 cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_INPUT;
2518 cmd.u.flow_hash_input.enabled_input_sort =
2519 ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK |
2520 ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK;
2522 ret = ena_com_mem_addr_set(ena_dev,
2523 &cmd.control_buffer.address,
2524 rss->hash_ctrl_dma_addr);
2525 if (unlikely(ret)) {
2526 ena_trc_err(ena_dev, "Memory address set failed\n");
2529 cmd.control_buffer.length = sizeof(*hash_ctrl);
2531 ret = ena_com_execute_admin_command(admin_queue,
2532 (struct ena_admin_aq_entry *)&cmd,
2534 (struct ena_admin_acq_entry *)&resp,
2537 ena_trc_err(ena_dev, "Failed to set hash input. error: %d\n", ret);
2542 int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev)
2544 struct ena_rss *rss = &ena_dev->rss;
2545 struct ena_admin_feature_rss_hash_control *hash_ctrl =
2547 u16 available_fields = 0;
2550 /* Get the supported hash input */
2551 rc = ena_com_get_hash_ctrl(ena_dev, 0, NULL);
2555 hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP4].fields =
2556 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
2557 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
2559 hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP4].fields =
2560 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
2561 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
2563 hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP6].fields =
2564 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
2565 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
2567 hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP6].fields =
2568 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
2569 ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
2571 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4].fields =
2572 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
2574 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP6].fields =
2575 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
2577 hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4_FRAG].fields =
2578 ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
2580 hash_ctrl->selected_fields[ENA_ADMIN_RSS_NOT_IP].fields =
2581 ENA_ADMIN_RSS_L2_DA | ENA_ADMIN_RSS_L2_SA;
2583 for (i = 0; i < ENA_ADMIN_RSS_PROTO_NUM; i++) {
2584 available_fields = hash_ctrl->selected_fields[i].fields &
2585 hash_ctrl->supported_fields[i].fields;
2586 if (available_fields != hash_ctrl->selected_fields[i].fields) {
2587 ena_trc_err(ena_dev, "Hash control doesn't support all the desire configuration. proto %x supported %x selected %x\n",
2588 i, hash_ctrl->supported_fields[i].fields,
2589 hash_ctrl->selected_fields[i].fields);
2590 return ENA_COM_UNSUPPORTED;
2594 rc = ena_com_set_hash_ctrl(ena_dev);
2596 /* In case of failure, restore the old hash ctrl */
2598 ena_com_get_hash_ctrl(ena_dev, 0, NULL);
2603 int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev,
2604 enum ena_admin_flow_hash_proto proto,
2607 struct ena_rss *rss = &ena_dev->rss;
2608 struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl;
2609 u16 supported_fields;
2612 if (proto >= ENA_ADMIN_RSS_PROTO_NUM) {
2613 ena_trc_err(ena_dev, "Invalid proto num (%u)\n", proto);
2614 return ENA_COM_INVAL;
2617 /* Get the ctrl table */
2618 rc = ena_com_get_hash_ctrl(ena_dev, proto, NULL);
2622 /* Make sure all the fields are supported */
2623 supported_fields = hash_ctrl->supported_fields[proto].fields;
2624 if ((hash_fields & supported_fields) != hash_fields) {
2625 ena_trc_err(ena_dev, "Proto %d doesn't support the required fields %x. supports only: %x\n",
2626 proto, hash_fields, supported_fields);
2629 hash_ctrl->selected_fields[proto].fields = hash_fields;
2631 rc = ena_com_set_hash_ctrl(ena_dev);
2633 /* In case of failure, restore the old hash ctrl */
2635 ena_com_get_hash_ctrl(ena_dev, 0, NULL);
2640 int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev,
2641 u16 entry_idx, u16 entry_value)
2643 struct ena_rss *rss = &ena_dev->rss;
2645 if (unlikely(entry_idx >= (1 << rss->tbl_log_size)))
2646 return ENA_COM_INVAL;
2648 if (unlikely((entry_value > ENA_TOTAL_NUM_QUEUES)))
2649 return ENA_COM_INVAL;
2651 rss->host_rss_ind_tbl[entry_idx] = entry_value;
2656 int ena_com_indirect_table_set(struct ena_com_dev *ena_dev)
2658 struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
2659 struct ena_rss *rss = &ena_dev->rss;
2660 struct ena_admin_set_feat_cmd cmd;
2661 struct ena_admin_set_feat_resp resp;
2664 if (!ena_com_check_supported_feature_id(ena_dev,
2665 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG)) {
2666 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n",
2667 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG);
2668 return ENA_COM_UNSUPPORTED;
2671 ret = ena_com_ind_tbl_convert_to_device(ena_dev);
2673 ena_trc_err(ena_dev, "Failed to convert host indirection table to device table\n");
2677 memset(&cmd, 0x0, sizeof(cmd));
2679 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
2680 cmd.aq_common_descriptor.flags =
2681 ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
2682 cmd.feat_common.feature_id = ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG;
2683 cmd.u.ind_table.size = rss->tbl_log_size;
2684 cmd.u.ind_table.inline_index = 0xFFFFFFFF;
2686 ret = ena_com_mem_addr_set(ena_dev,
2687 &cmd.control_buffer.address,
2688 rss->rss_ind_tbl_dma_addr);
2689 if (unlikely(ret)) {
2690 ena_trc_err(ena_dev, "Memory address set failed\n");
2694 cmd.control_buffer.length = (u32)(1ULL << rss->tbl_log_size) *
2695 sizeof(struct ena_admin_rss_ind_table_entry);
2697 ret = ena_com_execute_admin_command(admin_queue,
2698 (struct ena_admin_aq_entry *)&cmd,
2700 (struct ena_admin_acq_entry *)&resp,
2704 ena_trc_err(ena_dev, "Failed to set indirect table. error: %d\n", ret);
2709 int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl)
2711 struct ena_rss *rss = &ena_dev->rss;
2712 struct ena_admin_get_feat_resp get_resp;
2716 tbl_size = (u32)(1ULL << rss->tbl_log_size) *
2717 sizeof(struct ena_admin_rss_ind_table_entry);
2719 rc = ena_com_get_feature_ex(ena_dev, &get_resp,
2720 ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG,
2721 rss->rss_ind_tbl_dma_addr,
2729 for (i = 0; i < (1 << rss->tbl_log_size); i++)
2730 ind_tbl[i] = rss->host_rss_ind_tbl[i];
2735 int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 indr_tbl_log_size)
2739 memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss));
2741 rc = ena_com_indirect_table_allocate(ena_dev, indr_tbl_log_size);
2745 /* The following function might return unsupported in case the
2746 * device doesn't support setting the key / hash function. We can safely
2747 * ignore this error and have indirection table support only.
2749 rc = ena_com_hash_key_allocate(ena_dev);
2751 ena_com_hash_key_fill_default_key(ena_dev);
2752 else if (rc != ENA_COM_UNSUPPORTED)
2755 rc = ena_com_hash_ctrl_init(ena_dev);
2762 ena_com_hash_key_destroy(ena_dev);
2764 ena_com_indirect_table_destroy(ena_dev);
2770 void ena_com_rss_destroy(struct ena_com_dev *ena_dev)
2772 ena_com_indirect_table_destroy(ena_dev);
2773 ena_com_hash_key_destroy(ena_dev);
2774 ena_com_hash_ctrl_destroy(ena_dev);
2776 memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss));
2779 int ena_com_allocate_host_info(struct ena_com_dev *ena_dev)
2781 struct ena_host_attribute *host_attr = &ena_dev->host_attr;
2783 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
2785 host_attr->host_info,
2786 host_attr->host_info_dma_addr,
2787 host_attr->host_info_dma_handle);
2788 if (unlikely(!host_attr->host_info))
2789 return ENA_COM_NO_MEM;
2791 host_attr->host_info->ena_spec_version = ((ENA_COMMON_SPEC_VERSION_MAJOR <<
2792 ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) |
2793 (ENA_COMMON_SPEC_VERSION_MINOR));
2798 int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev,
2799 u32 debug_area_size)
2801 struct ena_host_attribute *host_attr = &ena_dev->host_attr;
2803 ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
2805 host_attr->debug_area_virt_addr,
2806 host_attr->debug_area_dma_addr,
2807 host_attr->debug_area_dma_handle);
2808 if (unlikely(!host_attr->debug_area_virt_addr)) {
2809 host_attr->debug_area_size = 0;
2810 return ENA_COM_NO_MEM;
2813 host_attr->debug_area_size = debug_area_size;
2818 void ena_com_delete_host_info(struct ena_com_dev *ena_dev)
2820 struct ena_host_attribute *host_attr = &ena_dev->host_attr;
2822 if (host_attr->host_info) {
2823 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
2825 host_attr->host_info,
2826 host_attr->host_info_dma_addr,
2827 host_attr->host_info_dma_handle);
2828 host_attr->host_info = NULL;
2832 void ena_com_delete_debug_area(struct ena_com_dev *ena_dev)
2834 struct ena_host_attribute *host_attr = &ena_dev->host_attr;
2836 if (host_attr->debug_area_virt_addr) {
2837 ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
2838 host_attr->debug_area_size,
2839 host_attr->debug_area_virt_addr,
2840 host_attr->debug_area_dma_addr,
2841 host_attr->debug_area_dma_handle);
2842 host_attr->debug_area_virt_addr = NULL;
2846 int ena_com_set_host_attributes(struct ena_com_dev *ena_dev)
2848 struct ena_host_attribute *host_attr = &ena_dev->host_attr;
2849 struct ena_com_admin_queue *admin_queue;
2850 struct ena_admin_set_feat_cmd cmd;
2851 struct ena_admin_set_feat_resp resp;
2855 /* Host attribute config is called before ena_com_get_dev_attr_feat
2856 * so ena_com can't check if the feature is supported.
2859 memset(&cmd, 0x0, sizeof(cmd));
2860 admin_queue = &ena_dev->admin_queue;
2862 cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
2863 cmd.feat_common.feature_id = ENA_ADMIN_HOST_ATTR_CONFIG;
2865 ret = ena_com_mem_addr_set(ena_dev,
2866 &cmd.u.host_attr.debug_ba,
2867 host_attr->debug_area_dma_addr);
2868 if (unlikely(ret)) {
2869 ena_trc_err(ena_dev, "Memory address set failed\n");
2873 ret = ena_com_mem_addr_set(ena_dev,
2874 &cmd.u.host_attr.os_info_ba,
2875 host_attr->host_info_dma_addr);
2876 if (unlikely(ret)) {
2877 ena_trc_err(ena_dev, "Memory address set failed\n");
2881 cmd.u.host_attr.debug_area_size = host_attr->debug_area_size;
2883 ret = ena_com_execute_admin_command(admin_queue,
2884 (struct ena_admin_aq_entry *)&cmd,
2886 (struct ena_admin_acq_entry *)&resp,
2890 ena_trc_err(ena_dev, "Failed to set host attributes: %d\n", ret);
2895 /* Interrupt moderation */
2896 bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev)
2898 return ena_com_check_supported_feature_id(ena_dev,
2899 ENA_ADMIN_INTERRUPT_MODERATION);
2902 static int ena_com_update_nonadaptive_moderation_interval(struct ena_com_dev *ena_dev,
2904 u32 intr_delay_resolution,
2905 u32 *intr_moder_interval)
2907 if (!intr_delay_resolution) {
2908 ena_trc_err(ena_dev, "Illegal interrupt delay granularity value\n");
2909 return ENA_COM_FAULT;
2912 *intr_moder_interval = coalesce_usecs / intr_delay_resolution;
2917 int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev,
2918 u32 tx_coalesce_usecs)
2920 return ena_com_update_nonadaptive_moderation_interval(ena_dev,
2922 ena_dev->intr_delay_resolution,
2923 &ena_dev->intr_moder_tx_interval);
2926 int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev,
2927 u32 rx_coalesce_usecs)
2929 return ena_com_update_nonadaptive_moderation_interval(ena_dev,
2931 ena_dev->intr_delay_resolution,
2932 &ena_dev->intr_moder_rx_interval);
2935 int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev)
2937 struct ena_admin_get_feat_resp get_resp;
2938 u16 delay_resolution;
2941 rc = ena_com_get_feature(ena_dev, &get_resp,
2942 ENA_ADMIN_INTERRUPT_MODERATION, 0);
2945 if (rc == ENA_COM_UNSUPPORTED) {
2946 ena_trc_dbg(ena_dev, "Feature %d isn't supported\n",
2947 ENA_ADMIN_INTERRUPT_MODERATION);
2950 ena_trc_err(ena_dev,
2951 "Failed to get interrupt moderation admin cmd. rc: %d\n", rc);
2954 /* no moderation supported, disable adaptive support */
2955 ena_com_disable_adaptive_moderation(ena_dev);
2959 /* if moderation is supported by device we set adaptive moderation */
2960 delay_resolution = get_resp.u.intr_moderation.intr_delay_resolution;
2961 ena_com_update_intr_delay_resolution(ena_dev, delay_resolution);
2963 /* Disable adaptive moderation by default - can be enabled later */
2964 ena_com_disable_adaptive_moderation(ena_dev);
2969 unsigned int ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev)
2971 return ena_dev->intr_moder_tx_interval;
2974 unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev)
2976 return ena_dev->intr_moder_rx_interval;
2979 int ena_com_config_dev_mode(struct ena_com_dev *ena_dev,
2980 struct ena_admin_feature_llq_desc *llq_features,
2981 struct ena_llq_configurations *llq_default_cfg)
2983 struct ena_com_llq_info *llq_info = &ena_dev->llq_info;
2986 if (!llq_features->max_llq_num) {
2987 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
2991 rc = ena_com_config_llq_info(ena_dev, llq_features, llq_default_cfg);
2995 ena_dev->tx_max_header_size = llq_info->desc_list_entry_size -
2996 (llq_info->descs_num_before_header * sizeof(struct ena_eth_io_tx_desc));
2998 if (unlikely(ena_dev->tx_max_header_size == 0)) {
2999 ena_trc_err(ena_dev, "The size of the LLQ entry is smaller than needed\n");
3003 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_DEV;