| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Netanel Belgazal | 10805 | 80.88% | 16 | 24.24% |
| Arthur Kiyanovski | 1556 | 11.65% | 24 | 36.36% |
| Shay Agroskin | 712 | 5.33% | 6 | 9.09% |
| Sameeh Jubran | 239 | 1.79% | 12 | 18.18% |
| Krister Johansen | 15 | 0.11% | 1 | 1.52% |
| Luis R. Rodriguez | 13 | 0.10% | 1 | 1.52% |
| Gal Pressman | 8 | 0.06% | 1 | 1.52% |
| David Arinzon | 8 | 0.06% | 2 | 3.03% |
| Yixing Liu | 2 | 0.01% | 1 | 1.52% |
| Jesse Brandeburg | 1 | 0.01% | 1 | 1.52% |
| Sinan Kaya | 1 | 0.01% | 1 | 1.52% |
| Total | 13360 | 66 |
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved. */ #include "ena_com.h" /*****************************************************************************/ /*****************************************************************************/ /* Timeout in micro-sec */ #define ADMIN_CMD_TIMEOUT_US (3000000) #define ENA_ASYNC_QUEUE_DEPTH 16 #define ENA_ADMIN_QUEUE_DEPTH 32 #define ENA_CTRL_MAJOR 0 #define ENA_CTRL_MINOR 0 #define ENA_CTRL_SUB_MINOR 1 #define MIN_ENA_CTRL_VER \ (((ENA_CTRL_MAJOR) << \ (ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT)) | \ ((ENA_CTRL_MINOR) << \ (ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT)) | \ (ENA_CTRL_SUB_MINOR)) #define ENA_DMA_ADDR_TO_UINT32_LOW(x) ((u32)((u64)(x))) #define ENA_DMA_ADDR_TO_UINT32_HIGH(x) ((u32)(((u64)(x)) >> 32)) #define ENA_MMIO_READ_TIMEOUT 0xFFFFFFFF #define ENA_COM_BOUNCE_BUFFER_CNTRL_CNT 4 #define ENA_REGS_ADMIN_INTR_MASK 1 #define ENA_MAX_BACKOFF_DELAY_EXP 16U #define ENA_MIN_ADMIN_POLL_US 100 #define ENA_MAX_ADMIN_POLL_US 5000 /*****************************************************************************/ /*****************************************************************************/ /*****************************************************************************/ enum ena_cmd_status { ENA_CMD_SUBMITTED, ENA_CMD_COMPLETED, /* Abort - canceled by the driver */ ENA_CMD_ABORTED, }; struct ena_comp_ctx { struct completion wait_event; struct ena_admin_acq_entry *user_cqe; u32 comp_size; enum ena_cmd_status status; /* status from the device */ u8 comp_status; u8 cmd_opcode; bool occupied; }; struct ena_com_stats_ctx { struct ena_admin_aq_get_stats_cmd get_cmd; struct ena_admin_acq_get_stats_resp get_resp; }; static int ena_com_mem_addr_set(struct ena_com_dev *ena_dev, struct ena_common_mem_addr *ena_addr, dma_addr_t addr) { if ((addr & GENMASK_ULL(ena_dev->dma_addr_bits - 1, 0)) != addr) { netdev_err(ena_dev->net_device, "DMA address has more bits that the device supports\n"); return -EINVAL; } ena_addr->mem_addr_low = lower_32_bits(addr); ena_addr->mem_addr_high = (u16)upper_32_bits(addr); return 0; } static int ena_com_admin_init_sq(struct ena_com_admin_queue *admin_queue) { struct ena_com_dev *ena_dev = admin_queue->ena_dev; struct ena_com_admin_sq *sq = &admin_queue->sq; u16 size = ADMIN_SQ_SIZE(admin_queue->q_depth); sq->entries = dma_alloc_coherent(admin_queue->q_dmadev, size, &sq->dma_addr, GFP_KERNEL); if (!sq->entries) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } sq->head = 0; sq->tail = 0; sq->phase = 1; sq->db_addr = NULL; return 0; } static int ena_com_admin_init_cq(struct ena_com_admin_queue *admin_queue) { struct ena_com_dev *ena_dev = admin_queue->ena_dev; struct ena_com_admin_cq *cq = &admin_queue->cq; u16 size = ADMIN_CQ_SIZE(admin_queue->q_depth); cq->entries = dma_alloc_coherent(admin_queue->q_dmadev, size, &cq->dma_addr, GFP_KERNEL); if (!cq->entries) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } cq->head = 0; cq->phase = 1; return 0; } static int ena_com_admin_init_aenq(struct ena_com_dev *ena_dev, struct ena_aenq_handlers *aenq_handlers) { struct ena_com_aenq *aenq = &ena_dev->aenq; u32 addr_low, addr_high, aenq_caps; u16 size; ena_dev->aenq.q_depth = ENA_ASYNC_QUEUE_DEPTH; size = ADMIN_AENQ_SIZE(ENA_ASYNC_QUEUE_DEPTH); aenq->entries = dma_alloc_coherent(ena_dev->dmadev, size, &aenq->dma_addr, GFP_KERNEL); if (!aenq->entries) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } aenq->head = aenq->q_depth; aenq->phase = 1; addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(aenq->dma_addr); addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(aenq->dma_addr); writel(addr_low, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_LO_OFF); writel(addr_high, ena_dev->reg_bar + ENA_REGS_AENQ_BASE_HI_OFF); aenq_caps = 0; aenq_caps |= ena_dev->aenq.q_depth & ENA_REGS_AENQ_CAPS_AENQ_DEPTH_MASK; aenq_caps |= (sizeof(struct ena_admin_aenq_entry) << ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_SHIFT) & ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_MASK; writel(aenq_caps, ena_dev->reg_bar + ENA_REGS_AENQ_CAPS_OFF); if (unlikely(!aenq_handlers)) { netdev_err(ena_dev->net_device, "AENQ handlers pointer is NULL\n"); return -EINVAL; } aenq->aenq_handlers = aenq_handlers; return 0; } static void comp_ctxt_release(struct ena_com_admin_queue *queue, struct ena_comp_ctx *comp_ctx) { comp_ctx->occupied = false; atomic_dec(&queue->outstanding_cmds); } static struct ena_comp_ctx *get_comp_ctxt(struct ena_com_admin_queue *admin_queue, u16 command_id, bool capture) { if (unlikely(command_id >= admin_queue->q_depth)) { netdev_err(admin_queue->ena_dev->net_device, "Command id is larger than the queue size. cmd_id: %u queue size %d\n", command_id, admin_queue->q_depth); return NULL; } if (unlikely(!admin_queue->comp_ctx)) { netdev_err(admin_queue->ena_dev->net_device, "Completion context is NULL\n"); return NULL; } if (unlikely(admin_queue->comp_ctx[command_id].occupied && capture)) { netdev_err(admin_queue->ena_dev->net_device, "Completion context is occupied\n"); return NULL; } if (capture) { atomic_inc(&admin_queue->outstanding_cmds); admin_queue->comp_ctx[command_id].occupied = true; } return &admin_queue->comp_ctx[command_id]; } static struct ena_comp_ctx *__ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue, struct ena_admin_aq_entry *cmd, size_t cmd_size_in_bytes, struct ena_admin_acq_entry *comp, size_t comp_size_in_bytes) { struct ena_comp_ctx *comp_ctx; u16 tail_masked, cmd_id; u16 queue_size_mask; u16 cnt; queue_size_mask = admin_queue->q_depth - 1; tail_masked = admin_queue->sq.tail & queue_size_mask; /* In case of queue FULL */ cnt = (u16)atomic_read(&admin_queue->outstanding_cmds); if (cnt >= admin_queue->q_depth) { netdev_dbg(admin_queue->ena_dev->net_device, "Admin queue is full.\n"); admin_queue->stats.out_of_space++; return ERR_PTR(-ENOSPC); } cmd_id = admin_queue->curr_cmd_id; cmd->aq_common_descriptor.flags |= admin_queue->sq.phase & ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK; cmd->aq_common_descriptor.command_id |= cmd_id & ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK; comp_ctx = get_comp_ctxt(admin_queue, cmd_id, true); if (unlikely(!comp_ctx)) return ERR_PTR(-EINVAL); comp_ctx->status = ENA_CMD_SUBMITTED; comp_ctx->comp_size = (u32)comp_size_in_bytes; comp_ctx->user_cqe = comp; comp_ctx->cmd_opcode = cmd->aq_common_descriptor.opcode; reinit_completion(&comp_ctx->wait_event); memcpy(&admin_queue->sq.entries[tail_masked], cmd, cmd_size_in_bytes); admin_queue->curr_cmd_id = (admin_queue->curr_cmd_id + 1) & queue_size_mask; admin_queue->sq.tail++; admin_queue->stats.submitted_cmd++; if (unlikely((admin_queue->sq.tail & queue_size_mask) == 0)) admin_queue->sq.phase = !admin_queue->sq.phase; writel(admin_queue->sq.tail, admin_queue->sq.db_addr); return comp_ctx; } static int ena_com_init_comp_ctxt(struct ena_com_admin_queue *admin_queue) { struct ena_com_dev *ena_dev = admin_queue->ena_dev; size_t size = admin_queue->q_depth * sizeof(struct ena_comp_ctx); struct ena_comp_ctx *comp_ctx; u16 i; admin_queue->comp_ctx = devm_kzalloc(admin_queue->q_dmadev, size, GFP_KERNEL); if (unlikely(!admin_queue->comp_ctx)) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } for (i = 0; i < admin_queue->q_depth; i++) { comp_ctx = get_comp_ctxt(admin_queue, i, false); if (comp_ctx) init_completion(&comp_ctx->wait_event); } return 0; } static struct ena_comp_ctx *ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue, struct ena_admin_aq_entry *cmd, size_t cmd_size_in_bytes, struct ena_admin_acq_entry *comp, size_t comp_size_in_bytes) { unsigned long flags = 0; struct ena_comp_ctx *comp_ctx; spin_lock_irqsave(&admin_queue->q_lock, flags); if (unlikely(!admin_queue->running_state)) { spin_unlock_irqrestore(&admin_queue->q_lock, flags); return ERR_PTR(-ENODEV); } comp_ctx = __ena_com_submit_admin_cmd(admin_queue, cmd, cmd_size_in_bytes, comp, comp_size_in_bytes); if (IS_ERR(comp_ctx)) admin_queue->running_state = false; spin_unlock_irqrestore(&admin_queue->q_lock, flags); return comp_ctx; } static int ena_com_init_io_sq(struct ena_com_dev *ena_dev, struct ena_com_create_io_ctx *ctx, struct ena_com_io_sq *io_sq) { size_t size; memset(&io_sq->desc_addr, 0x0, sizeof(io_sq->desc_addr)); io_sq->dma_addr_bits = (u8)ena_dev->dma_addr_bits; io_sq->desc_entry_size = (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ? sizeof(struct ena_eth_io_tx_desc) : sizeof(struct ena_eth_io_rx_desc); size = io_sq->desc_entry_size * io_sq->q_depth; if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) { io_sq->desc_addr.virt_addr = dma_alloc_coherent(ena_dev->dmadev, size, &io_sq->desc_addr.phys_addr, GFP_KERNEL); if (!io_sq->desc_addr.virt_addr) { io_sq->desc_addr.virt_addr = dma_alloc_coherent(ena_dev->dmadev, size, &io_sq->desc_addr.phys_addr, GFP_KERNEL); } if (!io_sq->desc_addr.virt_addr) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } } if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) { /* Allocate bounce buffers */ io_sq->bounce_buf_ctrl.buffer_size = ena_dev->llq_info.desc_list_entry_size; io_sq->bounce_buf_ctrl.buffers_num = ENA_COM_BOUNCE_BUFFER_CNTRL_CNT; io_sq->bounce_buf_ctrl.next_to_use = 0; size = (size_t)io_sq->bounce_buf_ctrl.buffer_size * io_sq->bounce_buf_ctrl.buffers_num; io_sq->bounce_buf_ctrl.base_buffer = devm_kzalloc(ena_dev->dmadev, size, GFP_KERNEL); if (!io_sq->bounce_buf_ctrl.base_buffer) io_sq->bounce_buf_ctrl.base_buffer = devm_kzalloc(ena_dev->dmadev, size, GFP_KERNEL); if (!io_sq->bounce_buf_ctrl.base_buffer) { netdev_err(ena_dev->net_device, "Bounce buffer memory allocation failed\n"); return -ENOMEM; } memcpy(&io_sq->llq_info, &ena_dev->llq_info, sizeof(io_sq->llq_info)); /* Initiate the first bounce buffer */ io_sq->llq_buf_ctrl.curr_bounce_buf = ena_com_get_next_bounce_buffer(&io_sq->bounce_buf_ctrl); memset(io_sq->llq_buf_ctrl.curr_bounce_buf, 0x0, io_sq->llq_info.desc_list_entry_size); io_sq->llq_buf_ctrl.descs_left_in_line = io_sq->llq_info.descs_num_before_header; io_sq->disable_meta_caching = io_sq->llq_info.disable_meta_caching; if (io_sq->llq_info.max_entries_in_tx_burst > 0) io_sq->entries_in_tx_burst_left = io_sq->llq_info.max_entries_in_tx_burst; } io_sq->tail = 0; io_sq->next_to_comp = 0; io_sq->phase = 1; return 0; } static int ena_com_init_io_cq(struct ena_com_dev *ena_dev, struct ena_com_create_io_ctx *ctx, struct ena_com_io_cq *io_cq) { size_t size; memset(&io_cq->cdesc_addr, 0x0, sizeof(io_cq->cdesc_addr)); /* Use the basic completion descriptor for Rx */ io_cq->cdesc_entry_size_in_bytes = (io_cq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ? sizeof(struct ena_eth_io_tx_cdesc) : sizeof(struct ena_eth_io_rx_cdesc_base); size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth; io_cq->cdesc_addr.virt_addr = dma_alloc_coherent(ena_dev->dmadev, size, &io_cq->cdesc_addr.phys_addr, GFP_KERNEL); if (!io_cq->cdesc_addr.virt_addr) { io_cq->cdesc_addr.virt_addr = dma_alloc_coherent(ena_dev->dmadev, size, &io_cq->cdesc_addr.phys_addr, GFP_KERNEL); } if (!io_cq->cdesc_addr.virt_addr) { netdev_err(ena_dev->net_device, "Memory allocation failed\n"); return -ENOMEM; } io_cq->phase = 1; io_cq->head = 0; return 0; } static void ena_com_handle_single_admin_completion(struct ena_com_admin_queue *admin_queue, struct ena_admin_acq_entry *cqe) { struct ena_comp_ctx *comp_ctx; u16 cmd_id; cmd_id = cqe->acq_common_descriptor.command & ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK; comp_ctx = get_comp_ctxt(admin_queue, cmd_id, false); if (unlikely(!comp_ctx)) { netdev_err(admin_queue->ena_dev->net_device, "comp_ctx is NULL. Changing the admin queue running state\n"); admin_queue->running_state = false; return; } comp_ctx->status = ENA_CMD_COMPLETED; comp_ctx->comp_status = cqe->acq_common_descriptor.status; if (comp_ctx->user_cqe) memcpy(comp_ctx->user_cqe, (void *)cqe, comp_ctx->comp_size); if (!admin_queue->polling) complete(&comp_ctx->wait_event); } static void ena_com_handle_admin_completion(struct ena_com_admin_queue *admin_queue) { struct ena_admin_acq_entry *cqe = NULL; u16 comp_num = 0; u16 head_masked; u8 phase; head_masked = admin_queue->cq.head & (admin_queue->q_depth - 1); phase = admin_queue->cq.phase; cqe = &admin_queue->cq.entries[head_masked]; /* Go over all the completions */ while ((READ_ONCE(cqe->acq_common_descriptor.flags) & ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) { /* Do not read the rest of the completion entry before the * phase bit was validated */ dma_rmb(); ena_com_handle_single_admin_completion(admin_queue, cqe); head_masked++; comp_num++; if (unlikely(head_masked == admin_queue->q_depth)) { head_masked = 0; phase = !phase; } cqe = &admin_queue->cq.entries[head_masked]; } admin_queue->cq.head += comp_num; admin_queue->cq.phase = phase; admin_queue->sq.head += comp_num; admin_queue->stats.completed_cmd += comp_num; } static int ena_com_comp_status_to_errno(struct ena_com_admin_queue *admin_queue, u8 comp_status) { if (unlikely(comp_status != 0)) netdev_err(admin_queue->ena_dev->net_device, "Admin command failed[%u]\n", comp_status); switch (comp_status) { case ENA_ADMIN_SUCCESS: return 0; case ENA_ADMIN_RESOURCE_ALLOCATION_FAILURE: return -ENOMEM; case ENA_ADMIN_UNSUPPORTED_OPCODE: return -EOPNOTSUPP; case ENA_ADMIN_BAD_OPCODE: case ENA_ADMIN_MALFORMED_REQUEST: case ENA_ADMIN_ILLEGAL_PARAMETER: case ENA_ADMIN_UNKNOWN_ERROR: return -EINVAL; case ENA_ADMIN_RESOURCE_BUSY: return -EAGAIN; } return -EINVAL; } static void ena_delay_exponential_backoff_us(u32 exp, u32 delay_us) { exp = min_t(u32, exp, ENA_MAX_BACKOFF_DELAY_EXP); delay_us = max_t(u32, ENA_MIN_ADMIN_POLL_US, delay_us); delay_us = min_t(u32, delay_us * (1U << exp), ENA_MAX_ADMIN_POLL_US); usleep_range(delay_us, 2 * delay_us); } static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_ctx, struct ena_com_admin_queue *admin_queue) { unsigned long flags = 0; unsigned long timeout; int ret; u32 exp = 0; timeout = jiffies + usecs_to_jiffies(admin_queue->completion_timeout); while (1) { spin_lock_irqsave(&admin_queue->q_lock, flags); ena_com_handle_admin_completion(admin_queue); spin_unlock_irqrestore(&admin_queue->q_lock, flags); if (comp_ctx->status != ENA_CMD_SUBMITTED) break; if (time_is_before_jiffies(timeout)) { netdev_err(admin_queue->ena_dev->net_device, "Wait for completion (polling) timeout\n"); /* ENA didn't have any completion */ spin_lock_irqsave(&admin_queue->q_lock, flags); admin_queue->stats.no_completion++; admin_queue->running_state = false; spin_unlock_irqrestore(&admin_queue->q_lock, flags); ret = -ETIME; goto err; } ena_delay_exponential_backoff_us(exp++, admin_queue->ena_dev->ena_min_poll_delay_us); } if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) { netdev_err(admin_queue->ena_dev->net_device, "Command was aborted\n"); spin_lock_irqsave(&admin_queue->q_lock, flags); admin_queue->stats.aborted_cmd++; spin_unlock_irqrestore(&admin_queue->q_lock, flags); ret = -ENODEV; goto err; } WARN(comp_ctx->status != ENA_CMD_COMPLETED, "Invalid comp status %d\n", comp_ctx->status); ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status); err: comp_ctxt_release(admin_queue, comp_ctx); return ret; } /* * Set the LLQ configurations of the firmware * * The driver provides only the enabled feature values to the device, * which in turn, checks if they are supported. */ static int ena_com_set_llq(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; struct ena_com_llq_info *llq_info = &ena_dev->llq_info; int ret; memset(&cmd, 0x0, sizeof(cmd)); admin_queue = &ena_dev->admin_queue; cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.feat_common.feature_id = ENA_ADMIN_LLQ; cmd.u.llq.header_location_ctrl_enabled = llq_info->header_location_ctrl; cmd.u.llq.entry_size_ctrl_enabled = llq_info->desc_list_entry_size_ctrl; cmd.u.llq.desc_num_before_header_enabled = llq_info->descs_num_before_header; cmd.u.llq.descriptors_stride_ctrl_enabled = llq_info->desc_stride_ctrl; cmd.u.llq.accel_mode.u.set.enabled_flags = BIT(ENA_ADMIN_DISABLE_META_CACHING) | BIT(ENA_ADMIN_LIMIT_TX_BURST); ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to set LLQ configurations: %d\n", ret); return ret; } static int ena_com_config_llq_info(struct ena_com_dev *ena_dev, struct ena_admin_feature_llq_desc *llq_features, struct ena_llq_configurations *llq_default_cfg) { struct ena_com_llq_info *llq_info = &ena_dev->llq_info; struct ena_admin_accel_mode_get llq_accel_mode_get; u16 supported_feat; int rc; memset(llq_info, 0, sizeof(*llq_info)); supported_feat = llq_features->header_location_ctrl_supported; if (likely(supported_feat & llq_default_cfg->llq_header_location)) { llq_info->header_location_ctrl = llq_default_cfg->llq_header_location; } else { netdev_err(ena_dev->net_device, "Invalid header location control, supported: 0x%x\n", supported_feat); return -EINVAL; } if (likely(llq_info->header_location_ctrl == ENA_ADMIN_INLINE_HEADER)) { supported_feat = llq_features->descriptors_stride_ctrl_supported; if (likely(supported_feat & llq_default_cfg->llq_stride_ctrl)) { llq_info->desc_stride_ctrl = llq_default_cfg->llq_stride_ctrl; } else { if (supported_feat & ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY) { llq_info->desc_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY; } else if (supported_feat & ENA_ADMIN_SINGLE_DESC_PER_ENTRY) { llq_info->desc_stride_ctrl = ENA_ADMIN_SINGLE_DESC_PER_ENTRY; } else { netdev_err(ena_dev->net_device, "Invalid desc_stride_ctrl, supported: 0x%x\n", supported_feat); return -EINVAL; } netdev_err(ena_dev->net_device, "Default llq stride ctrl is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", llq_default_cfg->llq_stride_ctrl, supported_feat, llq_info->desc_stride_ctrl); } } else { llq_info->desc_stride_ctrl = 0; } supported_feat = llq_features->entry_size_ctrl_supported; if (likely(supported_feat & llq_default_cfg->llq_ring_entry_size)) { llq_info->desc_list_entry_size_ctrl = llq_default_cfg->llq_ring_entry_size; llq_info->desc_list_entry_size = llq_default_cfg->llq_ring_entry_size_value; } else { if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_128B) { llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_128B; llq_info->desc_list_entry_size = 128; } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_192B) { llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_192B; llq_info->desc_list_entry_size = 192; } else if (supported_feat & ENA_ADMIN_LIST_ENTRY_SIZE_256B) { llq_info->desc_list_entry_size_ctrl = ENA_ADMIN_LIST_ENTRY_SIZE_256B; llq_info->desc_list_entry_size = 256; } else { netdev_err(ena_dev->net_device, "Invalid entry_size_ctrl, supported: 0x%x\n", supported_feat); return -EINVAL; } netdev_err(ena_dev->net_device, "Default llq ring entry size is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", llq_default_cfg->llq_ring_entry_size, supported_feat, llq_info->desc_list_entry_size); } if (unlikely(llq_info->desc_list_entry_size & 0x7)) { /* The desc list entry size should be whole multiply of 8 * This requirement comes from __iowrite64_copy() */ netdev_err(ena_dev->net_device, "Illegal entry size %d\n", llq_info->desc_list_entry_size); return -EINVAL; } if (llq_info->desc_stride_ctrl == ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY) llq_info->descs_per_entry = llq_info->desc_list_entry_size / sizeof(struct ena_eth_io_tx_desc); else llq_info->descs_per_entry = 1; supported_feat = llq_features->desc_num_before_header_supported; if (likely(supported_feat & llq_default_cfg->llq_num_decs_before_header)) { llq_info->descs_num_before_header = llq_default_cfg->llq_num_decs_before_header; } else { if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2) { llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2; } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1) { llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_1; } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4) { llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_4; } else if (supported_feat & ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8) { llq_info->descs_num_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_8; } else { netdev_err(ena_dev->net_device, "Invalid descs_num_before_header, supported: 0x%x\n", supported_feat); return -EINVAL; } netdev_err(ena_dev->net_device, "Default llq num descs before header is not supported, performing fallback, default: 0x%x, supported: 0x%x, used: 0x%x\n", llq_default_cfg->llq_num_decs_before_header, supported_feat, llq_info->descs_num_before_header); } /* Check for accelerated queue supported */ llq_accel_mode_get = llq_features->accel_mode.u.get; llq_info->disable_meta_caching = !!(llq_accel_mode_get.supported_flags & BIT(ENA_ADMIN_DISABLE_META_CACHING)); if (llq_accel_mode_get.supported_flags & BIT(ENA_ADMIN_LIMIT_TX_BURST)) llq_info->max_entries_in_tx_burst = llq_accel_mode_get.max_tx_burst_size / llq_default_cfg->llq_ring_entry_size_value; rc = ena_com_set_llq(ena_dev); if (rc) netdev_err(ena_dev->net_device, "Cannot set LLQ configuration: %d\n", rc); return rc; } static int ena_com_wait_and_process_admin_cq_interrupts(struct ena_comp_ctx *comp_ctx, struct ena_com_admin_queue *admin_queue) { unsigned long flags = 0; int ret; wait_for_completion_timeout(&comp_ctx->wait_event, usecs_to_jiffies(admin_queue->completion_timeout)); /* In case the command wasn't completed find out the root cause. * There might be 2 kinds of errors * 1) No completion (timeout reached) * 2) There is completion but the device didn't get any msi-x interrupt. */ if (unlikely(comp_ctx->status == ENA_CMD_SUBMITTED)) { spin_lock_irqsave(&admin_queue->q_lock, flags); ena_com_handle_admin_completion(admin_queue); admin_queue->stats.no_completion++; spin_unlock_irqrestore(&admin_queue->q_lock, flags); if (comp_ctx->status == ENA_CMD_COMPLETED) { netdev_err(admin_queue->ena_dev->net_device, "The ena device sent a completion but the driver didn't receive a MSI-X interrupt (cmd %d), autopolling mode is %s\n", comp_ctx->cmd_opcode, admin_queue->auto_polling ? "ON" : "OFF"); /* Check if fallback to polling is enabled */ if (admin_queue->auto_polling) admin_queue->polling = true; } else { netdev_err(admin_queue->ena_dev->net_device, "The ena device didn't send a completion for the admin cmd %d status %d\n", comp_ctx->cmd_opcode, comp_ctx->status); } /* Check if shifted to polling mode. * This will happen if there is a completion without an interrupt * and autopolling mode is enabled. Continuing normal execution in such case */ if (!admin_queue->polling) { admin_queue->running_state = false; ret = -ETIME; goto err; } } ret = ena_com_comp_status_to_errno(admin_queue, comp_ctx->comp_status); err: comp_ctxt_release(admin_queue, comp_ctx); return ret; } /* This method read the hardware device register through posting writes * and waiting for response * On timeout the function will return ENA_MMIO_READ_TIMEOUT */ static u32 ena_com_reg_bar_read32(struct ena_com_dev *ena_dev, u16 offset) { struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; volatile struct ena_admin_ena_mmio_req_read_less_resp *read_resp = mmio_read->read_resp; u32 mmio_read_reg, ret, i; unsigned long flags = 0; u32 timeout = mmio_read->reg_read_to; might_sleep(); if (timeout == 0) timeout = ENA_REG_READ_TIMEOUT; /* If readless is disabled, perform regular read */ if (!mmio_read->readless_supported) return readl(ena_dev->reg_bar + offset); spin_lock_irqsave(&mmio_read->lock, flags); mmio_read->seq_num++; read_resp->req_id = mmio_read->seq_num + 0xDEAD; mmio_read_reg = (offset << ENA_REGS_MMIO_REG_READ_REG_OFF_SHIFT) & ENA_REGS_MMIO_REG_READ_REG_OFF_MASK; mmio_read_reg |= mmio_read->seq_num & ENA_REGS_MMIO_REG_READ_REQ_ID_MASK; writel(mmio_read_reg, ena_dev->reg_bar + ENA_REGS_MMIO_REG_READ_OFF); for (i = 0; i < timeout; i++) { if (READ_ONCE(read_resp->req_id) == mmio_read->seq_num) break; udelay(1); } if (unlikely(i == timeout)) { netdev_err(ena_dev->net_device, "Reading reg failed for timeout. expected: req id[%u] offset[%u] actual: req id[%u] offset[%u]\n", mmio_read->seq_num, offset, read_resp->req_id, read_resp->reg_off); ret = ENA_MMIO_READ_TIMEOUT; goto err; } if (read_resp->reg_off != offset) { netdev_err(ena_dev->net_device, "Read failure: wrong offset provided\n"); ret = ENA_MMIO_READ_TIMEOUT; } else { ret = read_resp->reg_val; } err: spin_unlock_irqrestore(&mmio_read->lock, flags); return ret; } /* There are two types to wait for completion. * Polling mode - wait until the completion is available. * Async mode - wait on wait queue until the completion is ready * (or the timeout expired). * It is expected that the IRQ called ena_com_handle_admin_completion * to mark the completions. */ static int ena_com_wait_and_process_admin_cq(struct ena_comp_ctx *comp_ctx, struct ena_com_admin_queue *admin_queue) { if (admin_queue->polling) return ena_com_wait_and_process_admin_cq_polling(comp_ctx, admin_queue); return ena_com_wait_and_process_admin_cq_interrupts(comp_ctx, admin_queue); } static int ena_com_destroy_io_sq(struct ena_com_dev *ena_dev, struct ena_com_io_sq *io_sq) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_admin_aq_destroy_sq_cmd destroy_cmd; struct ena_admin_acq_destroy_sq_resp_desc destroy_resp; u8 direction; int ret; memset(&destroy_cmd, 0x0, sizeof(destroy_cmd)); if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) direction = ENA_ADMIN_SQ_DIRECTION_TX; else direction = ENA_ADMIN_SQ_DIRECTION_RX; destroy_cmd.sq.sq_identity |= (direction << ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT) & ENA_ADMIN_SQ_SQ_DIRECTION_MASK; destroy_cmd.sq.sq_idx = io_sq->idx; destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_SQ; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&destroy_cmd, sizeof(destroy_cmd), (struct ena_admin_acq_entry *)&destroy_resp, sizeof(destroy_resp)); if (unlikely(ret && (ret != -ENODEV))) netdev_err(ena_dev->net_device, "Failed to destroy io sq error: %d\n", ret); return ret; } static void ena_com_io_queue_free(struct ena_com_dev *ena_dev, struct ena_com_io_sq *io_sq, struct ena_com_io_cq *io_cq) { size_t size; if (io_cq->cdesc_addr.virt_addr) { size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth; dma_free_coherent(ena_dev->dmadev, size, io_cq->cdesc_addr.virt_addr, io_cq->cdesc_addr.phys_addr); io_cq->cdesc_addr.virt_addr = NULL; } if (io_sq->desc_addr.virt_addr) { size = io_sq->desc_entry_size * io_sq->q_depth; dma_free_coherent(ena_dev->dmadev, size, io_sq->desc_addr.virt_addr, io_sq->desc_addr.phys_addr); io_sq->desc_addr.virt_addr = NULL; } if (io_sq->bounce_buf_ctrl.base_buffer) { devm_kfree(ena_dev->dmadev, io_sq->bounce_buf_ctrl.base_buffer); io_sq->bounce_buf_ctrl.base_buffer = NULL; } } static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout, u16 exp_state) { u32 val, exp = 0; unsigned long timeout_stamp; /* Convert timeout from resolution of 100ms to us resolution. */ timeout_stamp = jiffies + usecs_to_jiffies(100 * 1000 * timeout); while (1) { val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); if (unlikely(val == ENA_MMIO_READ_TIMEOUT)) { netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); return -ETIME; } if ((val & ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK) == exp_state) return 0; if (time_is_before_jiffies(timeout_stamp)) return -ETIME; ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us); } } static bool ena_com_check_supported_feature_id(struct ena_com_dev *ena_dev, enum ena_admin_aq_feature_id feature_id) { u32 feature_mask = 1 << feature_id; /* Device attributes is always supported */ if ((feature_id != ENA_ADMIN_DEVICE_ATTRIBUTES) && !(ena_dev->supported_features & feature_mask)) return false; return true; } static int ena_com_get_feature_ex(struct ena_com_dev *ena_dev, struct ena_admin_get_feat_resp *get_resp, enum ena_admin_aq_feature_id feature_id, dma_addr_t control_buf_dma_addr, u32 control_buff_size, u8 feature_ver) { struct ena_com_admin_queue *admin_queue; struct ena_admin_get_feat_cmd get_cmd; int ret; if (!ena_com_check_supported_feature_id(ena_dev, feature_id)) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", feature_id); return -EOPNOTSUPP; } memset(&get_cmd, 0x0, sizeof(get_cmd)); admin_queue = &ena_dev->admin_queue; get_cmd.aq_common_descriptor.opcode = ENA_ADMIN_GET_FEATURE; if (control_buff_size) get_cmd.aq_common_descriptor.flags = ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; else get_cmd.aq_common_descriptor.flags = 0; ret = ena_com_mem_addr_set(ena_dev, &get_cmd.control_buffer.address, control_buf_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } get_cmd.control_buffer.length = control_buff_size; get_cmd.feat_common.feature_version = feature_ver; get_cmd.feat_common.feature_id = feature_id; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *) &get_cmd, sizeof(get_cmd), (struct ena_admin_acq_entry *) get_resp, sizeof(*get_resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to submit get_feature command %d error: %d\n", feature_id, ret); return ret; } static int ena_com_get_feature(struct ena_com_dev *ena_dev, struct ena_admin_get_feat_resp *get_resp, enum ena_admin_aq_feature_id feature_id, u8 feature_ver) { return ena_com_get_feature_ex(ena_dev, get_resp, feature_id, 0, 0, feature_ver); } int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev) { return ena_dev->rss.hash_func; } static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev) { struct ena_admin_feature_rss_flow_hash_control *hash_key = (ena_dev->rss).hash_key; netdev_rss_key_fill(&hash_key->key, sizeof(hash_key->key)); /* The key buffer is stored in the device in an array of * uint32 elements. */ hash_key->key_parts = ENA_ADMIN_RSS_KEY_PARTS; } static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_FUNCTION)) return -EOPNOTSUPP; rss->hash_key = dma_alloc_coherent(ena_dev->dmadev, sizeof(*rss->hash_key), &rss->hash_key_dma_addr, GFP_KERNEL); if (unlikely(!rss->hash_key)) return -ENOMEM; return 0; } static void ena_com_hash_key_destroy(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; if (rss->hash_key) dma_free_coherent(ena_dev->dmadev, sizeof(*rss->hash_key), rss->hash_key, rss->hash_key_dma_addr); rss->hash_key = NULL; } static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; rss->hash_ctrl = dma_alloc_coherent(ena_dev->dmadev, sizeof(*rss->hash_ctrl), &rss->hash_ctrl_dma_addr, GFP_KERNEL); if (unlikely(!rss->hash_ctrl)) return -ENOMEM; return 0; } static void ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; if (rss->hash_ctrl) dma_free_coherent(ena_dev->dmadev, sizeof(*rss->hash_ctrl), rss->hash_ctrl, rss->hash_ctrl_dma_addr); rss->hash_ctrl = NULL; } static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev, u16 log_size) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_get_feat_resp get_resp; size_t tbl_size; int ret; ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, 0); if (unlikely(ret)) return ret; if ((get_resp.u.ind_table.min_size > log_size) || (get_resp.u.ind_table.max_size < log_size)) { netdev_err(ena_dev->net_device, "Indirect table size doesn't fit. requested size: %d while min is:%d and max %d\n", 1 << log_size, 1 << get_resp.u.ind_table.min_size, 1 << get_resp.u.ind_table.max_size); return -EINVAL; } tbl_size = (1ULL << log_size) * sizeof(struct ena_admin_rss_ind_table_entry); rss->rss_ind_tbl = dma_alloc_coherent(ena_dev->dmadev, tbl_size, &rss->rss_ind_tbl_dma_addr, GFP_KERNEL); if (unlikely(!rss->rss_ind_tbl)) goto mem_err1; tbl_size = (1ULL << log_size) * sizeof(u16); rss->host_rss_ind_tbl = devm_kzalloc(ena_dev->dmadev, tbl_size, GFP_KERNEL); if (unlikely(!rss->host_rss_ind_tbl)) goto mem_err2; rss->tbl_log_size = log_size; return 0; mem_err2: tbl_size = (1ULL << log_size) * sizeof(struct ena_admin_rss_ind_table_entry); dma_free_coherent(ena_dev->dmadev, tbl_size, rss->rss_ind_tbl, rss->rss_ind_tbl_dma_addr); rss->rss_ind_tbl = NULL; mem_err1: rss->tbl_log_size = 0; return -ENOMEM; } static void ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; size_t tbl_size = (1ULL << rss->tbl_log_size) * sizeof(struct ena_admin_rss_ind_table_entry); if (rss->rss_ind_tbl) dma_free_coherent(ena_dev->dmadev, tbl_size, rss->rss_ind_tbl, rss->rss_ind_tbl_dma_addr); rss->rss_ind_tbl = NULL; if (rss->host_rss_ind_tbl) devm_kfree(ena_dev->dmadev, rss->host_rss_ind_tbl); rss->host_rss_ind_tbl = NULL; } static int ena_com_create_io_sq(struct ena_com_dev *ena_dev, struct ena_com_io_sq *io_sq, u16 cq_idx) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_admin_aq_create_sq_cmd create_cmd; struct ena_admin_acq_create_sq_resp_desc cmd_completion; u8 direction; int ret; memset(&create_cmd, 0x0, sizeof(create_cmd)); create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_SQ; if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) direction = ENA_ADMIN_SQ_DIRECTION_TX; else direction = ENA_ADMIN_SQ_DIRECTION_RX; create_cmd.sq_identity |= (direction << ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT) & ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK; create_cmd.sq_caps_2 |= io_sq->mem_queue_type & ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK; create_cmd.sq_caps_2 |= (ENA_ADMIN_COMPLETION_POLICY_DESC << ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT) & ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK; create_cmd.sq_caps_3 |= ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK; create_cmd.cq_idx = cq_idx; create_cmd.sq_depth = io_sq->q_depth; if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) { ret = ena_com_mem_addr_set(ena_dev, &create_cmd.sq_ba, io_sq->desc_addr.phys_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } } ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&create_cmd, sizeof(create_cmd), (struct ena_admin_acq_entry *)&cmd_completion, sizeof(cmd_completion)); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Failed to create IO SQ. error: %d\n", ret); return ret; } io_sq->idx = cmd_completion.sq_idx; io_sq->db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + (uintptr_t)cmd_completion.sq_doorbell_offset); if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) { io_sq->desc_addr.pbuf_dev_addr = (u8 __iomem *)((uintptr_t)ena_dev->mem_bar + cmd_completion.llq_descriptors_offset); } netdev_dbg(ena_dev->net_device, "Created sq[%u], depth[%u]\n", io_sq->idx, io_sq->q_depth); return ret; } static int ena_com_ind_tbl_convert_to_device(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; struct ena_com_io_sq *io_sq; u16 qid; int i; for (i = 0; i < 1 << rss->tbl_log_size; i++) { qid = rss->host_rss_ind_tbl[i]; if (qid >= ENA_TOTAL_NUM_QUEUES) return -EINVAL; io_sq = &ena_dev->io_sq_queues[qid]; if (io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX) return -EINVAL; rss->rss_ind_tbl[i].cq_idx = io_sq->idx; } return 0; } static void ena_com_update_intr_delay_resolution(struct ena_com_dev *ena_dev, u16 intr_delay_resolution) { u16 prev_intr_delay_resolution = ena_dev->intr_delay_resolution; if (unlikely(!intr_delay_resolution)) { netdev_err(ena_dev->net_device, "Illegal intr_delay_resolution provided. Going to use default 1 usec resolution\n"); intr_delay_resolution = ENA_DEFAULT_INTR_DELAY_RESOLUTION; } /* update Rx */ ena_dev->intr_moder_rx_interval = ena_dev->intr_moder_rx_interval * prev_intr_delay_resolution / intr_delay_resolution; /* update Tx */ ena_dev->intr_moder_tx_interval = ena_dev->intr_moder_tx_interval * prev_intr_delay_resolution / intr_delay_resolution; ena_dev->intr_delay_resolution = intr_delay_resolution; } /*****************************************************************************/ /******************************* API ******************************/ /*****************************************************************************/ int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue, struct ena_admin_aq_entry *cmd, size_t cmd_size, struct ena_admin_acq_entry *comp, size_t comp_size) { struct ena_comp_ctx *comp_ctx; int ret; comp_ctx = ena_com_submit_admin_cmd(admin_queue, cmd, cmd_size, comp, comp_size); if (IS_ERR(comp_ctx)) { ret = PTR_ERR(comp_ctx); if (ret == -ENODEV) netdev_dbg(admin_queue->ena_dev->net_device, "Failed to submit command [%d]\n", ret); else netdev_err(admin_queue->ena_dev->net_device, "Failed to submit command [%d]\n", ret); return ret; } ret = ena_com_wait_and_process_admin_cq(comp_ctx, admin_queue); if (unlikely(ret)) { if (admin_queue->running_state) netdev_err(admin_queue->ena_dev->net_device, "Failed to process command. ret = %d\n", ret); else netdev_dbg(admin_queue->ena_dev->net_device, "Failed to process command. ret = %d\n", ret); } return ret; } int ena_com_create_io_cq(struct ena_com_dev *ena_dev, struct ena_com_io_cq *io_cq) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_admin_aq_create_cq_cmd create_cmd; struct ena_admin_acq_create_cq_resp_desc cmd_completion; int ret; memset(&create_cmd, 0x0, sizeof(create_cmd)); create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_CQ; create_cmd.cq_caps_2 |= (io_cq->cdesc_entry_size_in_bytes / 4) & ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK; create_cmd.cq_caps_1 |= ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK; create_cmd.msix_vector = io_cq->msix_vector; create_cmd.cq_depth = io_cq->q_depth; ret = ena_com_mem_addr_set(ena_dev, &create_cmd.cq_ba, io_cq->cdesc_addr.phys_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&create_cmd, sizeof(create_cmd), (struct ena_admin_acq_entry *)&cmd_completion, sizeof(cmd_completion)); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Failed to create IO CQ. error: %d\n", ret); return ret; } io_cq->idx = cmd_completion.cq_idx; io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + cmd_completion.cq_interrupt_unmask_register_offset); if (cmd_completion.numa_node_register_offset) io_cq->numa_node_cfg_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + cmd_completion.numa_node_register_offset); netdev_dbg(ena_dev->net_device, "Created cq[%u], depth[%u]\n", io_cq->idx, io_cq->q_depth); return ret; } int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid, struct ena_com_io_sq **io_sq, struct ena_com_io_cq **io_cq) { if (qid >= ENA_TOTAL_NUM_QUEUES) { netdev_err(ena_dev->net_device, "Invalid queue number %d but the max is %d\n", qid, ENA_TOTAL_NUM_QUEUES); return -EINVAL; } *io_sq = &ena_dev->io_sq_queues[qid]; *io_cq = &ena_dev->io_cq_queues[qid]; return 0; } void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_comp_ctx *comp_ctx; u16 i; if (!admin_queue->comp_ctx) return; for (i = 0; i < admin_queue->q_depth; i++) { comp_ctx = get_comp_ctxt(admin_queue, i, false); if (unlikely(!comp_ctx)) break; comp_ctx->status = ENA_CMD_ABORTED; complete(&comp_ctx->wait_event); } } void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; unsigned long flags = 0; u32 exp = 0; spin_lock_irqsave(&admin_queue->q_lock, flags); while (atomic_read(&admin_queue->outstanding_cmds) != 0) { spin_unlock_irqrestore(&admin_queue->q_lock, flags); ena_delay_exponential_backoff_us(exp++, ena_dev->ena_min_poll_delay_us); spin_lock_irqsave(&admin_queue->q_lock, flags); } spin_unlock_irqrestore(&admin_queue->q_lock, flags); } int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev, struct ena_com_io_cq *io_cq) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_admin_aq_destroy_cq_cmd destroy_cmd; struct ena_admin_acq_destroy_cq_resp_desc destroy_resp; int ret; memset(&destroy_cmd, 0x0, sizeof(destroy_cmd)); destroy_cmd.cq_idx = io_cq->idx; destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_CQ; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&destroy_cmd, sizeof(destroy_cmd), (struct ena_admin_acq_entry *)&destroy_resp, sizeof(destroy_resp)); if (unlikely(ret && (ret != -ENODEV))) netdev_err(ena_dev->net_device, "Failed to destroy IO CQ. error: %d\n", ret); return ret; } bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev) { return ena_dev->admin_queue.running_state; } void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; unsigned long flags = 0; spin_lock_irqsave(&admin_queue->q_lock, flags); ena_dev->admin_queue.running_state = state; spin_unlock_irqrestore(&admin_queue->q_lock, flags); } void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev) { u16 depth = ena_dev->aenq.q_depth; WARN(ena_dev->aenq.head != depth, "Invalid AENQ state\n"); /* Init head_db to mark that all entries in the queue * are initially available */ writel(depth, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF); } int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag) { struct ena_com_admin_queue *admin_queue; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; struct ena_admin_get_feat_resp get_resp; int ret; ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_AENQ_CONFIG, 0); if (ret) { dev_info(ena_dev->dmadev, "Can't get aenq configuration\n"); return ret; } if ((get_resp.u.aenq.supported_groups & groups_flag) != groups_flag) { netdev_warn(ena_dev->net_device, "Trying to set unsupported aenq events. supported flag: 0x%x asked flag: 0x%x\n", get_resp.u.aenq.supported_groups, groups_flag); return -EOPNOTSUPP; } memset(&cmd, 0x0, sizeof(cmd)); admin_queue = &ena_dev->admin_queue; cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.aq_common_descriptor.flags = 0; cmd.feat_common.feature_id = ENA_ADMIN_AENQ_CONFIG; cmd.u.aenq.enabled_groups = groups_flag; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to config AENQ ret: %d\n", ret); return ret; } int ena_com_get_dma_width(struct ena_com_dev *ena_dev) { u32 caps = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF); u32 width; if (unlikely(caps == ENA_MMIO_READ_TIMEOUT)) { netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); return -ETIME; } width = (caps & ENA_REGS_CAPS_DMA_ADDR_WIDTH_MASK) >> ENA_REGS_CAPS_DMA_ADDR_WIDTH_SHIFT; netdev_dbg(ena_dev->net_device, "ENA dma width: %d\n", width); if ((width < 32) || width > ENA_MAX_PHYS_ADDR_SIZE_BITS) { netdev_err(ena_dev->net_device, "DMA width illegal value: %d\n", width); return -EINVAL; } ena_dev->dma_addr_bits = width; return width; } int ena_com_validate_version(struct ena_com_dev *ena_dev) { u32 ver; u32 ctrl_ver; u32 ctrl_ver_masked; /* Make sure the ENA version and the controller version are at least * as the driver expects */ ver = ena_com_reg_bar_read32(ena_dev, ENA_REGS_VERSION_OFF); ctrl_ver = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CONTROLLER_VERSION_OFF); if (unlikely((ver == ENA_MMIO_READ_TIMEOUT) || (ctrl_ver == ENA_MMIO_READ_TIMEOUT))) { netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); return -ETIME; } dev_info(ena_dev->dmadev, "ENA device version: %d.%d\n", (ver & ENA_REGS_VERSION_MAJOR_VERSION_MASK) >> ENA_REGS_VERSION_MAJOR_VERSION_SHIFT, ver & ENA_REGS_VERSION_MINOR_VERSION_MASK); dev_info(ena_dev->dmadev, "ENA controller version: %d.%d.%d implementation version %d\n", (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) >> ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT, (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) >> ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT, (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK), (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_IMPL_ID_MASK) >> ENA_REGS_CONTROLLER_VERSION_IMPL_ID_SHIFT); ctrl_ver_masked = (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) | (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) | (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK); /* Validate the ctrl version without the implementation ID */ if (ctrl_ver_masked < MIN_ENA_CTRL_VER) { netdev_err(ena_dev->net_device, "ENA ctrl version is lower than the minimal ctrl version the driver supports\n"); return -1; } return 0; } static void ena_com_free_ena_admin_queue_comp_ctx(struct ena_com_dev *ena_dev, struct ena_com_admin_queue *admin_queue) { if (!admin_queue->comp_ctx) return; devm_kfree(ena_dev->dmadev, admin_queue->comp_ctx); admin_queue->comp_ctx = NULL; } void ena_com_admin_destroy(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_com_admin_cq *cq = &admin_queue->cq; struct ena_com_admin_sq *sq = &admin_queue->sq; struct ena_com_aenq *aenq = &ena_dev->aenq; u16 size; ena_com_free_ena_admin_queue_comp_ctx(ena_dev, admin_queue); size = ADMIN_SQ_SIZE(admin_queue->q_depth); if (sq->entries) dma_free_coherent(ena_dev->dmadev, size, sq->entries, sq->dma_addr); sq->entries = NULL; size = ADMIN_CQ_SIZE(admin_queue->q_depth); if (cq->entries) dma_free_coherent(ena_dev->dmadev, size, cq->entries, cq->dma_addr); cq->entries = NULL; size = ADMIN_AENQ_SIZE(aenq->q_depth); if (ena_dev->aenq.entries) dma_free_coherent(ena_dev->dmadev, size, aenq->entries, aenq->dma_addr); aenq->entries = NULL; } void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling) { u32 mask_value = 0; if (polling) mask_value = ENA_REGS_ADMIN_INTR_MASK; writel(mask_value, ena_dev->reg_bar + ENA_REGS_INTR_MASK_OFF); ena_dev->admin_queue.polling = polling; } void ena_com_set_admin_auto_polling_mode(struct ena_com_dev *ena_dev, bool polling) { ena_dev->admin_queue.auto_polling = polling; } int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev) { struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; spin_lock_init(&mmio_read->lock); mmio_read->read_resp = dma_alloc_coherent(ena_dev->dmadev, sizeof(*mmio_read->read_resp), &mmio_read->read_resp_dma_addr, GFP_KERNEL); if (unlikely(!mmio_read->read_resp)) goto err; ena_com_mmio_reg_read_request_write_dev_addr(ena_dev); mmio_read->read_resp->req_id = 0x0; mmio_read->seq_num = 0x0; mmio_read->readless_supported = true; return 0; err: return -ENOMEM; } void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported) { struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; mmio_read->readless_supported = readless_supported; } void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev) { struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; writel(0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF); writel(0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF); dma_free_coherent(ena_dev->dmadev, sizeof(*mmio_read->read_resp), mmio_read->read_resp, mmio_read->read_resp_dma_addr); mmio_read->read_resp = NULL; } void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev) { struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read; u32 addr_low, addr_high; addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(mmio_read->read_resp_dma_addr); addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(mmio_read->read_resp_dma_addr); writel(addr_low, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF); writel(addr_high, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF); } int ena_com_admin_init(struct ena_com_dev *ena_dev, struct ena_aenq_handlers *aenq_handlers) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; u32 aq_caps, acq_caps, dev_sts, addr_low, addr_high; int ret; dev_sts = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); if (unlikely(dev_sts == ENA_MMIO_READ_TIMEOUT)) { netdev_err(ena_dev->net_device, "Reg read timeout occurred\n"); return -ETIME; } if (!(dev_sts & ENA_REGS_DEV_STS_READY_MASK)) { netdev_err(ena_dev->net_device, "Device isn't ready, abort com init\n"); return -ENODEV; } admin_queue->q_depth = ENA_ADMIN_QUEUE_DEPTH; admin_queue->q_dmadev = ena_dev->dmadev; admin_queue->polling = false; admin_queue->curr_cmd_id = 0; atomic_set(&admin_queue->outstanding_cmds, 0); spin_lock_init(&admin_queue->q_lock); ret = ena_com_init_comp_ctxt(admin_queue); if (ret) goto error; ret = ena_com_admin_init_sq(admin_queue); if (ret) goto error; ret = ena_com_admin_init_cq(admin_queue); if (ret) goto error; admin_queue->sq.db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + ENA_REGS_AQ_DB_OFF); addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->sq.dma_addr); addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->sq.dma_addr); writel(addr_low, ena_dev->reg_bar + ENA_REGS_AQ_BASE_LO_OFF); writel(addr_high, ena_dev->reg_bar + ENA_REGS_AQ_BASE_HI_OFF); addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->cq.dma_addr); addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->cq.dma_addr); writel(addr_low, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_LO_OFF); writel(addr_high, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_HI_OFF); aq_caps = 0; aq_caps |= admin_queue->q_depth & ENA_REGS_AQ_CAPS_AQ_DEPTH_MASK; aq_caps |= (sizeof(struct ena_admin_aq_entry) << ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_SHIFT) & ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_MASK; acq_caps = 0; acq_caps |= admin_queue->q_depth & ENA_REGS_ACQ_CAPS_ACQ_DEPTH_MASK; acq_caps |= (sizeof(struct ena_admin_acq_entry) << ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_SHIFT) & ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_MASK; writel(aq_caps, ena_dev->reg_bar + ENA_REGS_AQ_CAPS_OFF); writel(acq_caps, ena_dev->reg_bar + ENA_REGS_ACQ_CAPS_OFF); ret = ena_com_admin_init_aenq(ena_dev, aenq_handlers); if (ret) goto error; admin_queue->ena_dev = ena_dev; admin_queue->running_state = true; return 0; error: ena_com_admin_destroy(ena_dev); return ret; } int ena_com_create_io_queue(struct ena_com_dev *ena_dev, struct ena_com_create_io_ctx *ctx) { struct ena_com_io_sq *io_sq; struct ena_com_io_cq *io_cq; int ret; if (ctx->qid >= ENA_TOTAL_NUM_QUEUES) { netdev_err(ena_dev->net_device, "Qid (%d) is bigger than max num of queues (%d)\n", ctx->qid, ENA_TOTAL_NUM_QUEUES); return -EINVAL; } io_sq = &ena_dev->io_sq_queues[ctx->qid]; io_cq = &ena_dev->io_cq_queues[ctx->qid]; memset(io_sq, 0x0, sizeof(*io_sq)); memset(io_cq, 0x0, sizeof(*io_cq)); /* Init CQ */ io_cq->q_depth = ctx->queue_size; io_cq->direction = ctx->direction; io_cq->qid = ctx->qid; io_cq->msix_vector = ctx->msix_vector; io_sq->q_depth = ctx->queue_size; io_sq->direction = ctx->direction; io_sq->qid = ctx->qid; io_sq->mem_queue_type = ctx->mem_queue_type; if (ctx->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) /* header length is limited to 8 bits */ io_sq->tx_max_header_size = min_t(u32, ena_dev->tx_max_header_size, SZ_256); ret = ena_com_init_io_sq(ena_dev, ctx, io_sq); if (ret) goto error; ret = ena_com_init_io_cq(ena_dev, ctx, io_cq); if (ret) goto error; ret = ena_com_create_io_cq(ena_dev, io_cq); if (ret) goto error; ret = ena_com_create_io_sq(ena_dev, io_sq, io_cq->idx); if (ret) goto destroy_io_cq; return 0; destroy_io_cq: ena_com_destroy_io_cq(ena_dev, io_cq); error: ena_com_io_queue_free(ena_dev, io_sq, io_cq); return ret; } void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid) { struct ena_com_io_sq *io_sq; struct ena_com_io_cq *io_cq; if (qid >= ENA_TOTAL_NUM_QUEUES) { netdev_err(ena_dev->net_device, "Qid (%d) is bigger than max num of queues (%d)\n", qid, ENA_TOTAL_NUM_QUEUES); return; } io_sq = &ena_dev->io_sq_queues[qid]; io_cq = &ena_dev->io_cq_queues[qid]; ena_com_destroy_io_sq(ena_dev, io_sq); ena_com_destroy_io_cq(ena_dev, io_cq); ena_com_io_queue_free(ena_dev, io_sq, io_cq); } int ena_com_get_link_params(struct ena_com_dev *ena_dev, struct ena_admin_get_feat_resp *resp) { return ena_com_get_feature(ena_dev, resp, ENA_ADMIN_LINK_CONFIG, 0); } int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev, struct ena_com_dev_get_features_ctx *get_feat_ctx) { struct ena_admin_get_feat_resp get_resp; int rc; rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_DEVICE_ATTRIBUTES, 0); if (rc) return rc; memcpy(&get_feat_ctx->dev_attr, &get_resp.u.dev_attr, sizeof(get_resp.u.dev_attr)); ena_dev->supported_features = get_resp.u.dev_attr.supported_features; ena_dev->capabilities = get_resp.u.dev_attr.capabilities; if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) { rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_MAX_QUEUES_EXT, ENA_FEATURE_MAX_QUEUE_EXT_VER); if (rc) return rc; if (get_resp.u.max_queue_ext.version != ENA_FEATURE_MAX_QUEUE_EXT_VER) return -EINVAL; memcpy(&get_feat_ctx->max_queue_ext, &get_resp.u.max_queue_ext, sizeof(get_resp.u.max_queue_ext)); ena_dev->tx_max_header_size = get_resp.u.max_queue_ext.max_queue_ext.max_tx_header_size; } else { rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_MAX_QUEUES_NUM, 0); memcpy(&get_feat_ctx->max_queues, &get_resp.u.max_queue, sizeof(get_resp.u.max_queue)); ena_dev->tx_max_header_size = get_resp.u.max_queue.max_header_size; if (rc) return rc; } rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_AENQ_CONFIG, 0); if (rc) return rc; memcpy(&get_feat_ctx->aenq, &get_resp.u.aenq, sizeof(get_resp.u.aenq)); rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0); if (rc) return rc; memcpy(&get_feat_ctx->offload, &get_resp.u.offload, sizeof(get_resp.u.offload)); /* Driver hints isn't mandatory admin command. So in case the * command isn't supported set driver hints to 0 */ rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_HW_HINTS, 0); if (!rc) memcpy(&get_feat_ctx->hw_hints, &get_resp.u.hw_hints, sizeof(get_resp.u.hw_hints)); else if (rc == -EOPNOTSUPP) memset(&get_feat_ctx->hw_hints, 0x0, sizeof(get_feat_ctx->hw_hints)); else return rc; rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_LLQ, 0); if (!rc) memcpy(&get_feat_ctx->llq, &get_resp.u.llq, sizeof(get_resp.u.llq)); else if (rc == -EOPNOTSUPP) memset(&get_feat_ctx->llq, 0x0, sizeof(get_feat_ctx->llq)); else return rc; return 0; } void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev) { ena_com_handle_admin_completion(&ena_dev->admin_queue); } /* ena_handle_specific_aenq_event: * return the handler that is relevant to the specific event group */ static ena_aenq_handler ena_com_get_specific_aenq_cb(struct ena_com_dev *ena_dev, u16 group) { struct ena_aenq_handlers *aenq_handlers = ena_dev->aenq.aenq_handlers; if ((group < ENA_MAX_HANDLERS) && aenq_handlers->handlers[group]) return aenq_handlers->handlers[group]; return aenq_handlers->unimplemented_handler; } /* ena_aenq_intr_handler: * handles the aenq incoming events. * pop events from the queue and apply the specific handler */ void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data) { struct ena_admin_aenq_entry *aenq_e; struct ena_admin_aenq_common_desc *aenq_common; struct ena_com_aenq *aenq = &ena_dev->aenq; u64 timestamp; ena_aenq_handler handler_cb; u16 masked_head, processed = 0; u8 phase; masked_head = aenq->head & (aenq->q_depth - 1); phase = aenq->phase; aenq_e = &aenq->entries[masked_head]; /* Get first entry */ aenq_common = &aenq_e->aenq_common_desc; /* Go over all the events */ while ((READ_ONCE(aenq_common->flags) & ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK) == phase) { /* Make sure the phase bit (ownership) is as expected before * reading the rest of the descriptor. */ dma_rmb(); timestamp = (u64)aenq_common->timestamp_low | ((u64)aenq_common->timestamp_high << 32); netdev_dbg(ena_dev->net_device, "AENQ! Group[%x] Syndrome[%x] timestamp: [%llus]\n", aenq_common->group, aenq_common->syndrome, timestamp); /* Handle specific event*/ handler_cb = ena_com_get_specific_aenq_cb(ena_dev, aenq_common->group); handler_cb(data, aenq_e); /* call the actual event handler*/ /* Get next event entry */ masked_head++; processed++; if (unlikely(masked_head == aenq->q_depth)) { masked_head = 0; phase = !phase; } aenq_e = &aenq->entries[masked_head]; aenq_common = &aenq_e->aenq_common_desc; } aenq->head += processed; aenq->phase = phase; /* Don't update aenq doorbell if there weren't any processed events */ if (!processed) return; /* write the aenq doorbell after all AENQ descriptors were read */ mb(); writel_relaxed((u32)aenq->head, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF); } int ena_com_dev_reset(struct ena_com_dev *ena_dev, enum ena_regs_reset_reason_types reset_reason) { u32 stat, timeout, cap, reset_val; int rc; stat = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF); cap = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF); if (unlikely((stat == ENA_MMIO_READ_TIMEOUT) || (cap == ENA_MMIO_READ_TIMEOUT))) { netdev_err(ena_dev->net_device, "Reg read32 timeout occurred\n"); return -ETIME; } if ((stat & ENA_REGS_DEV_STS_READY_MASK) == 0) { netdev_err(ena_dev->net_device, "Device isn't ready, can't reset device\n"); return -EINVAL; } timeout = (cap & ENA_REGS_CAPS_RESET_TIMEOUT_MASK) >> ENA_REGS_CAPS_RESET_TIMEOUT_SHIFT; if (timeout == 0) { netdev_err(ena_dev->net_device, "Invalid timeout value\n"); return -EINVAL; } /* start reset */ reset_val = ENA_REGS_DEV_CTL_DEV_RESET_MASK; reset_val |= (reset_reason << ENA_REGS_DEV_CTL_RESET_REASON_SHIFT) & ENA_REGS_DEV_CTL_RESET_REASON_MASK; writel(reset_val, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF); /* Write again the MMIO read request address */ ena_com_mmio_reg_read_request_write_dev_addr(ena_dev); rc = wait_for_reset_state(ena_dev, timeout, ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK); if (rc != 0) { netdev_err(ena_dev->net_device, "Reset indication didn't turn on\n"); return rc; } /* reset done */ writel(0, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF); rc = wait_for_reset_state(ena_dev, timeout, 0); if (rc != 0) { netdev_err(ena_dev->net_device, "Reset indication didn't turn off\n"); return rc; } timeout = (cap & ENA_REGS_CAPS_ADMIN_CMD_TO_MASK) >> ENA_REGS_CAPS_ADMIN_CMD_TO_SHIFT; if (timeout) /* the resolution of timeout reg is 100ms */ ena_dev->admin_queue.completion_timeout = timeout * 100000; else ena_dev->admin_queue.completion_timeout = ADMIN_CMD_TIMEOUT_US; return 0; } static int ena_get_dev_stats(struct ena_com_dev *ena_dev, struct ena_com_stats_ctx *ctx, enum ena_admin_get_stats_type type) { struct ena_admin_aq_get_stats_cmd *get_cmd = &ctx->get_cmd; struct ena_admin_acq_get_stats_resp *get_resp = &ctx->get_resp; struct ena_com_admin_queue *admin_queue; int ret; admin_queue = &ena_dev->admin_queue; get_cmd->aq_common_descriptor.opcode = ENA_ADMIN_GET_STATS; get_cmd->aq_common_descriptor.flags = 0; get_cmd->type = type; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)get_cmd, sizeof(*get_cmd), (struct ena_admin_acq_entry *)get_resp, sizeof(*get_resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to get stats. error: %d\n", ret); return ret; } int ena_com_get_eni_stats(struct ena_com_dev *ena_dev, struct ena_admin_eni_stats *stats) { struct ena_com_stats_ctx ctx; int ret; if (!ena_com_get_cap(ena_dev, ENA_ADMIN_ENI_STATS)) { netdev_err(ena_dev->net_device, "Capability %d isn't supported\n", ENA_ADMIN_ENI_STATS); return -EOPNOTSUPP; } memset(&ctx, 0x0, sizeof(ctx)); ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_ENI); if (likely(ret == 0)) memcpy(stats, &ctx.get_resp.u.eni_stats, sizeof(ctx.get_resp.u.eni_stats)); return ret; } int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev, struct ena_admin_basic_stats *stats) { struct ena_com_stats_ctx ctx; int ret; memset(&ctx, 0x0, sizeof(ctx)); ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_BASIC); if (likely(ret == 0)) memcpy(stats, &ctx.get_resp.u.basic_stats, sizeof(ctx.get_resp.u.basic_stats)); return ret; } int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, u32 mtu) { struct ena_com_admin_queue *admin_queue; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; int ret; if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_MTU)) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_MTU); return -EOPNOTSUPP; } memset(&cmd, 0x0, sizeof(cmd)); admin_queue = &ena_dev->admin_queue; cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.aq_common_descriptor.flags = 0; cmd.feat_common.feature_id = ENA_ADMIN_MTU; cmd.u.mtu.mtu = mtu; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to set mtu %d. error: %d\n", mtu, ret); return ret; } int ena_com_get_offload_settings(struct ena_com_dev *ena_dev, struct ena_admin_feature_offload_desc *offload) { int ret; struct ena_admin_get_feat_resp resp; ret = ena_com_get_feature(ena_dev, &resp, ENA_ADMIN_STATELESS_OFFLOAD_CONFIG, 0); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Failed to get offload capabilities %d\n", ret); return ret; } memcpy(offload, &resp.u.offload, sizeof(resp.u.offload)); return 0; } int ena_com_set_hash_function(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_rss *rss = &ena_dev->rss; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; struct ena_admin_get_feat_resp get_resp; int ret; if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_FUNCTION)) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_RSS_HASH_FUNCTION); return -EOPNOTSUPP; } /* Validate hash function is supported */ ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_RSS_HASH_FUNCTION, 0); if (unlikely(ret)) return ret; if (!(get_resp.u.flow_hash_func.supported_func & BIT(rss->hash_func))) { netdev_err(ena_dev->net_device, "Func hash %d isn't supported by device, abort\n", rss->hash_func); return -EOPNOTSUPP; } memset(&cmd, 0x0, sizeof(cmd)); cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.aq_common_descriptor.flags = ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_FUNCTION; cmd.u.flow_hash_func.init_val = rss->hash_init_val; cmd.u.flow_hash_func.selected_func = 1 << rss->hash_func; ret = ena_com_mem_addr_set(ena_dev, &cmd.control_buffer.address, rss->hash_key_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } cmd.control_buffer.length = sizeof(*rss->hash_key); ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Failed to set hash function %d. error: %d\n", rss->hash_func, ret); return -EINVAL; } return 0; } int ena_com_fill_hash_function(struct ena_com_dev *ena_dev, enum ena_admin_hash_functions func, const u8 *key, u16 key_len, u32 init_val) { struct ena_admin_feature_rss_flow_hash_control *hash_key; struct ena_admin_get_feat_resp get_resp; enum ena_admin_hash_functions old_func; struct ena_rss *rss = &ena_dev->rss; int rc; hash_key = rss->hash_key; /* Make sure size is a mult of DWs */ if (unlikely(key_len & 0x3)) return -EINVAL; rc = ena_com_get_feature_ex(ena_dev, &get_resp, ENA_ADMIN_RSS_HASH_FUNCTION, rss->hash_key_dma_addr, sizeof(*rss->hash_key), 0); if (unlikely(rc)) return rc; if (!(BIT(func) & get_resp.u.flow_hash_func.supported_func)) { netdev_err(ena_dev->net_device, "Flow hash function %d isn't supported\n", func); return -EOPNOTSUPP; } if ((func == ENA_ADMIN_TOEPLITZ) && key) { if (key_len != sizeof(hash_key->key)) { netdev_err(ena_dev->net_device, "key len (%u) doesn't equal the supported size (%zu)\n", key_len, sizeof(hash_key->key)); return -EINVAL; } memcpy(hash_key->key, key, key_len); hash_key->key_parts = key_len / sizeof(hash_key->key[0]); } rss->hash_init_val = init_val; old_func = rss->hash_func; rss->hash_func = func; rc = ena_com_set_hash_function(ena_dev); /* Restore the old function */ if (unlikely(rc)) rss->hash_func = old_func; return rc; } int ena_com_get_hash_function(struct ena_com_dev *ena_dev, enum ena_admin_hash_functions *func) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_get_feat_resp get_resp; int rc; if (unlikely(!func)) return -EINVAL; rc = ena_com_get_feature_ex(ena_dev, &get_resp, ENA_ADMIN_RSS_HASH_FUNCTION, rss->hash_key_dma_addr, sizeof(*rss->hash_key), 0); if (unlikely(rc)) return rc; /* ffs() returns 1 in case the lsb is set */ rss->hash_func = ffs(get_resp.u.flow_hash_func.selected_func); if (rss->hash_func) rss->hash_func--; *func = rss->hash_func; return 0; } int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key) { struct ena_admin_feature_rss_flow_hash_control *hash_key = ena_dev->rss.hash_key; if (key) memcpy(key, hash_key->key, (size_t)(hash_key->key_parts) * sizeof(hash_key->key[0])); return 0; } int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev, enum ena_admin_flow_hash_proto proto, u16 *fields) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_get_feat_resp get_resp; int rc; rc = ena_com_get_feature_ex(ena_dev, &get_resp, ENA_ADMIN_RSS_HASH_INPUT, rss->hash_ctrl_dma_addr, sizeof(*rss->hash_ctrl), 0); if (unlikely(rc)) return rc; if (fields) *fields = rss->hash_ctrl->selected_fields[proto].fields; return 0; } int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_rss *rss = &ena_dev->rss; struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; int ret; if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_HASH_INPUT)) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_RSS_HASH_INPUT); return -EOPNOTSUPP; } memset(&cmd, 0x0, sizeof(cmd)); cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.aq_common_descriptor.flags = ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_INPUT; cmd.u.flow_hash_input.enabled_input_sort = ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK | ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK; ret = ena_com_mem_addr_set(ena_dev, &cmd.control_buffer.address, rss->hash_ctrl_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } cmd.control_buffer.length = sizeof(*hash_ctrl); ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to set hash input. error: %d\n", ret); return ret; } int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl; u16 available_fields = 0; int rc, i; /* Get the supported hash input */ rc = ena_com_get_hash_ctrl(ena_dev, 0, NULL); if (unlikely(rc)) return rc; hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP4].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP4].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP6].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP6].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA | ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP; hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP6].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4_FRAG].fields = ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA; hash_ctrl->selected_fields[ENA_ADMIN_RSS_NOT_IP].fields = ENA_ADMIN_RSS_L2_DA | ENA_ADMIN_RSS_L2_SA; for (i = 0; i < ENA_ADMIN_RSS_PROTO_NUM; i++) { available_fields = hash_ctrl->selected_fields[i].fields & hash_ctrl->supported_fields[i].fields; if (available_fields != hash_ctrl->selected_fields[i].fields) { netdev_err(ena_dev->net_device, "Hash control doesn't support all the desire configuration. proto %x supported %x selected %x\n", i, hash_ctrl->supported_fields[i].fields, hash_ctrl->selected_fields[i].fields); return -EOPNOTSUPP; } } rc = ena_com_set_hash_ctrl(ena_dev); /* In case of failure, restore the old hash ctrl */ if (unlikely(rc)) ena_com_get_hash_ctrl(ena_dev, 0, NULL); return rc; } int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev, enum ena_admin_flow_hash_proto proto, u16 hash_fields) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl; u16 supported_fields; int rc; if (proto >= ENA_ADMIN_RSS_PROTO_NUM) { netdev_err(ena_dev->net_device, "Invalid proto num (%u)\n", proto); return -EINVAL; } /* Get the ctrl table */ rc = ena_com_get_hash_ctrl(ena_dev, proto, NULL); if (unlikely(rc)) return rc; /* Make sure all the fields are supported */ supported_fields = hash_ctrl->supported_fields[proto].fields; if ((hash_fields & supported_fields) != hash_fields) { netdev_err(ena_dev->net_device, "Proto %d doesn't support the required fields %x. supports only: %x\n", proto, hash_fields, supported_fields); } hash_ctrl->selected_fields[proto].fields = hash_fields; rc = ena_com_set_hash_ctrl(ena_dev); /* In case of failure, restore the old hash ctrl */ if (unlikely(rc)) ena_com_get_hash_ctrl(ena_dev, 0, NULL); return 0; } int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev, u16 entry_idx, u16 entry_value) { struct ena_rss *rss = &ena_dev->rss; if (unlikely(entry_idx >= (1 << rss->tbl_log_size))) return -EINVAL; if (unlikely((entry_value > ENA_TOTAL_NUM_QUEUES))) return -EINVAL; rss->host_rss_ind_tbl[entry_idx] = entry_value; return 0; } int ena_com_indirect_table_set(struct ena_com_dev *ena_dev) { struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; struct ena_rss *rss = &ena_dev->rss; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; int ret; if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG)) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG); return -EOPNOTSUPP; } ret = ena_com_ind_tbl_convert_to_device(ena_dev); if (ret) { netdev_err(ena_dev->net_device, "Failed to convert host indirection table to device table\n"); return ret; } memset(&cmd, 0x0, sizeof(cmd)); cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.aq_common_descriptor.flags = ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK; cmd.feat_common.feature_id = ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG; cmd.u.ind_table.size = rss->tbl_log_size; cmd.u.ind_table.inline_index = 0xFFFFFFFF; ret = ena_com_mem_addr_set(ena_dev, &cmd.control_buffer.address, rss->rss_ind_tbl_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } cmd.control_buffer.length = (1ULL << rss->tbl_log_size) * sizeof(struct ena_admin_rss_ind_table_entry); ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to set indirect table. error: %d\n", ret); return ret; } int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl) { struct ena_rss *rss = &ena_dev->rss; struct ena_admin_get_feat_resp get_resp; u32 tbl_size; int i, rc; tbl_size = (1ULL << rss->tbl_log_size) * sizeof(struct ena_admin_rss_ind_table_entry); rc = ena_com_get_feature_ex(ena_dev, &get_resp, ENA_ADMIN_RSS_INDIRECTION_TABLE_CONFIG, rss->rss_ind_tbl_dma_addr, tbl_size, 0); if (unlikely(rc)) return rc; if (!ind_tbl) return 0; for (i = 0; i < (1 << rss->tbl_log_size); i++) ind_tbl[i] = rss->host_rss_ind_tbl[i]; return 0; } int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 indr_tbl_log_size) { int rc; memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss)); rc = ena_com_indirect_table_allocate(ena_dev, indr_tbl_log_size); if (unlikely(rc)) goto err_indr_tbl; /* The following function might return unsupported in case the * device doesn't support setting the key / hash function. We can safely * ignore this error and have indirection table support only. */ rc = ena_com_hash_key_allocate(ena_dev); if (likely(!rc)) ena_com_hash_key_fill_default_key(ena_dev); else if (rc != -EOPNOTSUPP) goto err_hash_key; rc = ena_com_hash_ctrl_init(ena_dev); if (unlikely(rc)) goto err_hash_ctrl; return 0; err_hash_ctrl: ena_com_hash_key_destroy(ena_dev); err_hash_key: ena_com_indirect_table_destroy(ena_dev); err_indr_tbl: return rc; } void ena_com_rss_destroy(struct ena_com_dev *ena_dev) { ena_com_indirect_table_destroy(ena_dev); ena_com_hash_key_destroy(ena_dev); ena_com_hash_ctrl_destroy(ena_dev); memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss)); } int ena_com_allocate_host_info(struct ena_com_dev *ena_dev) { struct ena_host_attribute *host_attr = &ena_dev->host_attr; host_attr->host_info = dma_alloc_coherent(ena_dev->dmadev, SZ_4K, &host_attr->host_info_dma_addr, GFP_KERNEL); if (unlikely(!host_attr->host_info)) return -ENOMEM; host_attr->host_info->ena_spec_version = ((ENA_COMMON_SPEC_VERSION_MAJOR << ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) | (ENA_COMMON_SPEC_VERSION_MINOR)); return 0; } int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev, u32 debug_area_size) { struct ena_host_attribute *host_attr = &ena_dev->host_attr; host_attr->debug_area_virt_addr = dma_alloc_coherent(ena_dev->dmadev, debug_area_size, &host_attr->debug_area_dma_addr, GFP_KERNEL); if (unlikely(!host_attr->debug_area_virt_addr)) { host_attr->debug_area_size = 0; return -ENOMEM; } host_attr->debug_area_size = debug_area_size; return 0; } void ena_com_delete_host_info(struct ena_com_dev *ena_dev) { struct ena_host_attribute *host_attr = &ena_dev->host_attr; if (host_attr->host_info) { dma_free_coherent(ena_dev->dmadev, SZ_4K, host_attr->host_info, host_attr->host_info_dma_addr); host_attr->host_info = NULL; } } void ena_com_delete_debug_area(struct ena_com_dev *ena_dev) { struct ena_host_attribute *host_attr = &ena_dev->host_attr; if (host_attr->debug_area_virt_addr) { dma_free_coherent(ena_dev->dmadev, host_attr->debug_area_size, host_attr->debug_area_virt_addr, host_attr->debug_area_dma_addr); host_attr->debug_area_virt_addr = NULL; } } int ena_com_set_host_attributes(struct ena_com_dev *ena_dev) { struct ena_host_attribute *host_attr = &ena_dev->host_attr; struct ena_com_admin_queue *admin_queue; struct ena_admin_set_feat_cmd cmd; struct ena_admin_set_feat_resp resp; int ret; /* Host attribute config is called before ena_com_get_dev_attr_feat * so ena_com can't check if the feature is supported. */ memset(&cmd, 0x0, sizeof(cmd)); admin_queue = &ena_dev->admin_queue; cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE; cmd.feat_common.feature_id = ENA_ADMIN_HOST_ATTR_CONFIG; ret = ena_com_mem_addr_set(ena_dev, &cmd.u.host_attr.debug_ba, host_attr->debug_area_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } ret = ena_com_mem_addr_set(ena_dev, &cmd.u.host_attr.os_info_ba, host_attr->host_info_dma_addr); if (unlikely(ret)) { netdev_err(ena_dev->net_device, "Memory address set failed\n"); return ret; } cmd.u.host_attr.debug_area_size = host_attr->debug_area_size; ret = ena_com_execute_admin_command(admin_queue, (struct ena_admin_aq_entry *)&cmd, sizeof(cmd), (struct ena_admin_acq_entry *)&resp, sizeof(resp)); if (unlikely(ret)) netdev_err(ena_dev->net_device, "Failed to set host attributes: %d\n", ret); return ret; } /* Interrupt moderation */ bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev) { return ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_INTERRUPT_MODERATION); } static int ena_com_update_nonadaptive_moderation_interval(struct ena_com_dev *ena_dev, u32 coalesce_usecs, u32 intr_delay_resolution, u32 *intr_moder_interval) { if (!intr_delay_resolution) { netdev_err(ena_dev->net_device, "Illegal interrupt delay granularity value\n"); return -EFAULT; } *intr_moder_interval = coalesce_usecs / intr_delay_resolution; return 0; } int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev, u32 tx_coalesce_usecs) { return ena_com_update_nonadaptive_moderation_interval(ena_dev, tx_coalesce_usecs, ena_dev->intr_delay_resolution, &ena_dev->intr_moder_tx_interval); } int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev, u32 rx_coalesce_usecs) { return ena_com_update_nonadaptive_moderation_interval(ena_dev, rx_coalesce_usecs, ena_dev->intr_delay_resolution, &ena_dev->intr_moder_rx_interval); } int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev) { struct ena_admin_get_feat_resp get_resp; u16 delay_resolution; int rc; rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_INTERRUPT_MODERATION, 0); if (rc) { if (rc == -EOPNOTSUPP) { netdev_dbg(ena_dev->net_device, "Feature %d isn't supported\n", ENA_ADMIN_INTERRUPT_MODERATION); rc = 0; } else { netdev_err(ena_dev->net_device, "Failed to get interrupt moderation admin cmd. rc: %d\n", rc); } /* no moderation supported, disable adaptive support */ ena_com_disable_adaptive_moderation(ena_dev); return rc; } /* if moderation is supported by device we set adaptive moderation */ delay_resolution = get_resp.u.intr_moderation.intr_delay_resolution; ena_com_update_intr_delay_resolution(ena_dev, delay_resolution); /* Disable adaptive moderation by default - can be enabled later */ ena_com_disable_adaptive_moderation(ena_dev); return 0; } unsigned int ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev) { return ena_dev->intr_moder_tx_interval; } unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev) { return ena_dev->intr_moder_rx_interval; } int ena_com_config_dev_mode(struct ena_com_dev *ena_dev, struct ena_admin_feature_llq_desc *llq_features, struct ena_llq_configurations *llq_default_cfg) { struct ena_com_llq_info *llq_info = &ena_dev->llq_info; int rc; if (!llq_features->max_llq_num) { ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; return 0; } rc = ena_com_config_llq_info(ena_dev, llq_features, llq_default_cfg); if (rc) return rc; ena_dev->tx_max_header_size = llq_info->desc_list_entry_size - (llq_info->descs_num_before_header * sizeof(struct ena_eth_io_tx_desc)); if (unlikely(ena_dev->tx_max_header_size == 0)) { netdev_err(ena_dev->net_device, "The size of the LLQ entry is smaller than needed\n"); return -EINVAL; } ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_DEV; return 0; }
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