| /* QLogic qed NIC Driver |
| * |
| * Copyright (c) 2015 QLogic Corporation |
| * |
| * This software is available under the terms of the GNU General Public License |
| * (GPL) Version 2, available from the file COPYING in the main directory of |
| * this source tree. |
| */ |
| |
| #include <linux/types.h> |
| #include <asm/byteorder.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/if_vlan.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| #include <linux/stddef.h> |
| #include <linux/version.h> |
| #include <linux/workqueue.h> |
| #include <net/ipv6.h> |
| #include <linux/bitops.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/etherdevice.h> |
| #include <linux/io.h> |
| #include <linux/list.h> |
| #include <linux/mutex.h> |
| #include <linux/spinlock.h> |
| #include <linux/string.h> |
| #include <linux/qed/qed_ll2_if.h> |
| #include "qed.h" |
| #include "qed_cxt.h" |
| #include "qed_dev_api.h" |
| #include "qed_hsi.h" |
| #include "qed_hw.h" |
| #include "qed_int.h" |
| #include "qed_ll2.h" |
| #include "qed_mcp.h" |
| #include "qed_reg_addr.h" |
| #include "qed_sp.h" |
| #include "qed_roce.h" |
| |
| #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registred) |
| #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registred) |
| |
| #define QED_LL2_TX_SIZE (256) |
| #define QED_LL2_RX_SIZE (4096) |
| |
| struct qed_cb_ll2_info { |
| int rx_cnt; |
| u32 rx_size; |
| u8 handle; |
| bool frags_mapped; |
| |
| /* Lock protecting LL2 buffer lists in sleepless context */ |
| spinlock_t lock; |
| struct list_head list; |
| |
| const struct qed_ll2_cb_ops *cbs; |
| void *cb_cookie; |
| }; |
| |
| struct qed_ll2_buffer { |
| struct list_head list; |
| void *data; |
| dma_addr_t phys_addr; |
| }; |
| |
| static void qed_ll2b_complete_tx_packet(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| void *cookie, |
| dma_addr_t first_frag_addr, |
| bool b_last_fragment, |
| bool b_last_packet) |
| { |
| struct qed_dev *cdev = p_hwfn->cdev; |
| struct sk_buff *skb = cookie; |
| |
| /* All we need to do is release the mapping */ |
| dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, |
| skb_headlen(skb), DMA_TO_DEVICE); |
| |
| if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) |
| cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, |
| b_last_fragment); |
| |
| if (cdev->ll2->frags_mapped) |
| /* Case where mapped frags were received, need to |
| * free skb with nr_frags marked as 0 |
| */ |
| skb_shinfo(skb)->nr_frags = 0; |
| |
| dev_kfree_skb_any(skb); |
| } |
| |
| static int qed_ll2_alloc_buffer(struct qed_dev *cdev, |
| u8 **data, dma_addr_t *phys_addr) |
| { |
| *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); |
| if (!(*data)) { |
| DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); |
| return -ENOMEM; |
| } |
| |
| *phys_addr = dma_map_single(&cdev->pdev->dev, |
| ((*data) + NET_SKB_PAD), |
| cdev->ll2->rx_size, DMA_FROM_DEVICE); |
| if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { |
| DP_INFO(cdev, "Failed to map LL2 buffer data\n"); |
| kfree((*data)); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, |
| struct qed_ll2_buffer *buffer) |
| { |
| spin_lock_bh(&cdev->ll2->lock); |
| |
| dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, |
| cdev->ll2->rx_size, DMA_FROM_DEVICE); |
| kfree(buffer->data); |
| list_del(&buffer->list); |
| |
| cdev->ll2->rx_cnt--; |
| if (!cdev->ll2->rx_cnt) |
| DP_INFO(cdev, "All LL2 entries were removed\n"); |
| |
| spin_unlock_bh(&cdev->ll2->lock); |
| |
| return 0; |
| } |
| |
| static void qed_ll2_kill_buffers(struct qed_dev *cdev) |
| { |
| struct qed_ll2_buffer *buffer, *tmp_buffer; |
| |
| list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) |
| qed_ll2_dealloc_buffer(cdev, buffer); |
| } |
| |
| static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| struct qed_ll2_rx_packet *p_pkt, |
| struct core_rx_fast_path_cqe *p_cqe, |
| bool b_last_packet) |
| { |
| u16 packet_length = le16_to_cpu(p_cqe->packet_length); |
| struct qed_ll2_buffer *buffer = p_pkt->cookie; |
| struct qed_dev *cdev = p_hwfn->cdev; |
| u16 vlan = le16_to_cpu(p_cqe->vlan); |
| u32 opaque_data_0, opaque_data_1; |
| u8 pad = p_cqe->placement_offset; |
| dma_addr_t new_phys_addr; |
| struct sk_buff *skb; |
| bool reuse = false; |
| int rc = -EINVAL; |
| u8 *new_data; |
| |
| opaque_data_0 = le32_to_cpu(p_cqe->opaque_data.data[0]); |
| opaque_data_1 = le32_to_cpu(p_cqe->opaque_data.data[1]); |
| |
| DP_VERBOSE(p_hwfn, |
| (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), |
| "Got an LL2 Rx completion: [Buffer at phys 0x%llx, offset 0x%02x] Length 0x%04x Parse_flags 0x%04x vlan 0x%04x Opaque data [0x%08x:0x%08x]\n", |
| (u64)p_pkt->rx_buf_addr, pad, packet_length, |
| le16_to_cpu(p_cqe->parse_flags.flags), vlan, |
| opaque_data_0, opaque_data_1); |
| |
| if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { |
| print_hex_dump(KERN_INFO, "", |
| DUMP_PREFIX_OFFSET, 16, 1, |
| buffer->data, packet_length, false); |
| } |
| |
| /* Determine if data is valid */ |
| if (packet_length < ETH_HLEN) |
| reuse = true; |
| |
| /* Allocate a replacement for buffer; Reuse upon failure */ |
| if (!reuse) |
| rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, |
| &new_phys_addr); |
| |
| /* If need to reuse or there's no replacement buffer, repost this */ |
| if (rc) |
| goto out_post; |
| |
| skb = build_skb(buffer->data, 0); |
| if (!skb) { |
| rc = -ENOMEM; |
| goto out_post; |
| } |
| |
| pad += NET_SKB_PAD; |
| skb_reserve(skb, pad); |
| skb_put(skb, packet_length); |
| skb_checksum_none_assert(skb); |
| |
| /* Get parital ethernet information instead of eth_type_trans(), |
| * Since we don't have an associated net_device. |
| */ |
| skb_reset_mac_header(skb); |
| skb->protocol = eth_hdr(skb)->h_proto; |
| |
| /* Pass SKB onward */ |
| if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { |
| if (vlan) |
| __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); |
| cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, |
| opaque_data_0, opaque_data_1); |
| } |
| |
| /* Update Buffer information and update FW producer */ |
| buffer->data = new_data; |
| buffer->phys_addr = new_phys_addr; |
| |
| out_post: |
| rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle, |
| buffer->phys_addr, 0, buffer, 1); |
| |
| if (rc) |
| qed_ll2_dealloc_buffer(cdev, buffer); |
| } |
| |
| static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| bool b_lock, |
| bool b_only_active) |
| { |
| struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; |
| |
| if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) |
| return NULL; |
| |
| if (!p_hwfn->p_ll2_info) |
| return NULL; |
| |
| p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; |
| |
| if (b_only_active) { |
| if (b_lock) |
| mutex_lock(&p_ll2_conn->mutex); |
| if (p_ll2_conn->b_active) |
| p_ret = p_ll2_conn; |
| if (b_lock) |
| mutex_unlock(&p_ll2_conn->mutex); |
| } else { |
| p_ret = p_ll2_conn; |
| } |
| |
| return p_ret; |
| } |
| |
| static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, |
| u8 connection_handle) |
| { |
| return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); |
| } |
| |
| static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, |
| u8 connection_handle) |
| { |
| return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); |
| } |
| |
| static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn |
| *p_hwfn, |
| u8 connection_handle) |
| { |
| return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); |
| } |
| |
| static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) |
| { |
| bool b_last_packet = false, b_last_frag = false; |
| struct qed_ll2_tx_packet *p_pkt = NULL; |
| struct qed_ll2_info *p_ll2_conn; |
| struct qed_ll2_tx_queue *p_tx; |
| dma_addr_t tx_frag; |
| |
| p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return; |
| |
| p_tx = &p_ll2_conn->tx_queue; |
| |
| while (!list_empty(&p_tx->active_descq)) { |
| p_pkt = list_first_entry(&p_tx->active_descq, |
| struct qed_ll2_tx_packet, list_entry); |
| if (!p_pkt) |
| break; |
| |
| list_del(&p_pkt->list_entry); |
| b_last_packet = list_empty(&p_tx->active_descq); |
| list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); |
| p_tx->cur_completing_packet = *p_pkt; |
| p_tx->cur_completing_bd_idx = 1; |
| b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; |
| tx_frag = p_pkt->bds_set[0].tx_frag; |
| if (p_ll2_conn->gsi_enable) |
| qed_ll2b_release_tx_gsi_packet(p_hwfn, |
| p_ll2_conn->my_id, |
| p_pkt->cookie, |
| tx_frag, |
| b_last_frag, |
| b_last_packet); |
| else |
| qed_ll2b_complete_tx_packet(p_hwfn, |
| p_ll2_conn->my_id, |
| p_pkt->cookie, |
| tx_frag, |
| b_last_frag, |
| b_last_packet); |
| |
| } |
| } |
| |
| static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) |
| { |
| struct qed_ll2_info *p_ll2_conn = p_cookie; |
| struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; |
| u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; |
| struct qed_ll2_tx_packet *p_pkt; |
| bool b_last_frag = false; |
| unsigned long flags; |
| dma_addr_t tx_frag; |
| int rc = -EINVAL; |
| |
| spin_lock_irqsave(&p_tx->lock, flags); |
| if (p_tx->b_completing_packet) { |
| rc = -EBUSY; |
| goto out; |
| } |
| |
| new_idx = le16_to_cpu(*p_tx->p_fw_cons); |
| num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); |
| while (num_bds) { |
| if (list_empty(&p_tx->active_descq)) |
| goto out; |
| |
| p_pkt = list_first_entry(&p_tx->active_descq, |
| struct qed_ll2_tx_packet, list_entry); |
| if (!p_pkt) |
| goto out; |
| |
| p_tx->b_completing_packet = true; |
| p_tx->cur_completing_packet = *p_pkt; |
| num_bds_in_packet = p_pkt->bd_used; |
| list_del(&p_pkt->list_entry); |
| |
| if (num_bds < num_bds_in_packet) { |
| DP_NOTICE(p_hwfn, |
| "Rest of BDs does not cover whole packet\n"); |
| goto out; |
| } |
| |
| num_bds -= num_bds_in_packet; |
| p_tx->bds_idx += num_bds_in_packet; |
| while (num_bds_in_packet--) |
| qed_chain_consume(&p_tx->txq_chain); |
| |
| p_tx->cur_completing_bd_idx = 1; |
| b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; |
| list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); |
| |
| spin_unlock_irqrestore(&p_tx->lock, flags); |
| tx_frag = p_pkt->bds_set[0].tx_frag; |
| if (p_ll2_conn->gsi_enable) |
| qed_ll2b_complete_tx_gsi_packet(p_hwfn, |
| p_ll2_conn->my_id, |
| p_pkt->cookie, |
| tx_frag, |
| b_last_frag, !num_bds); |
| else |
| qed_ll2b_complete_tx_packet(p_hwfn, |
| p_ll2_conn->my_id, |
| p_pkt->cookie, |
| tx_frag, |
| b_last_frag, !num_bds); |
| spin_lock_irqsave(&p_tx->lock, flags); |
| } |
| |
| p_tx->b_completing_packet = false; |
| rc = 0; |
| out: |
| spin_unlock_irqrestore(&p_tx->lock, flags); |
| return rc; |
| } |
| |
| static int |
| qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_info, |
| union core_rx_cqe_union *p_cqe, |
| unsigned long lock_flags, bool b_last_cqe) |
| { |
| struct qed_ll2_rx_queue *p_rx = &p_ll2_info->rx_queue; |
| struct qed_ll2_rx_packet *p_pkt = NULL; |
| u16 packet_length, parse_flags, vlan; |
| u32 src_mac_addrhi; |
| u16 src_mac_addrlo; |
| |
| if (!list_empty(&p_rx->active_descq)) |
| p_pkt = list_first_entry(&p_rx->active_descq, |
| struct qed_ll2_rx_packet, list_entry); |
| if (!p_pkt) { |
| DP_NOTICE(p_hwfn, |
| "GSI Rx completion but active_descq is empty\n"); |
| return -EIO; |
| } |
| |
| list_del(&p_pkt->list_entry); |
| parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); |
| packet_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); |
| vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); |
| src_mac_addrhi = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); |
| src_mac_addrlo = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); |
| if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) |
| DP_NOTICE(p_hwfn, |
| "Mismatch between active_descq and the LL2 Rx chain\n"); |
| list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); |
| |
| spin_unlock_irqrestore(&p_rx->lock, lock_flags); |
| qed_ll2b_complete_rx_gsi_packet(p_hwfn, |
| p_ll2_info->my_id, |
| p_pkt->cookie, |
| p_pkt->rx_buf_addr, |
| packet_length, |
| p_cqe->rx_cqe_gsi.data_length_error, |
| parse_flags, |
| vlan, |
| src_mac_addrhi, |
| src_mac_addrlo, b_last_cqe); |
| spin_lock_irqsave(&p_rx->lock, lock_flags); |
| |
| return 0; |
| } |
| |
| static int qed_ll2_rxq_completion_reg(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn, |
| union core_rx_cqe_union *p_cqe, |
| unsigned long lock_flags, |
| bool b_last_cqe) |
| { |
| struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; |
| struct qed_ll2_rx_packet *p_pkt = NULL; |
| |
| if (!list_empty(&p_rx->active_descq)) |
| p_pkt = list_first_entry(&p_rx->active_descq, |
| struct qed_ll2_rx_packet, list_entry); |
| if (!p_pkt) { |
| DP_NOTICE(p_hwfn, |
| "LL2 Rx completion but active_descq is empty\n"); |
| return -EIO; |
| } |
| list_del(&p_pkt->list_entry); |
| |
| if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) |
| DP_NOTICE(p_hwfn, |
| "Mismatch between active_descq and the LL2 Rx chain\n"); |
| list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); |
| |
| spin_unlock_irqrestore(&p_rx->lock, lock_flags); |
| qed_ll2b_complete_rx_packet(p_hwfn, p_ll2_conn->my_id, |
| p_pkt, &p_cqe->rx_cqe_fp, b_last_cqe); |
| spin_lock_irqsave(&p_rx->lock, lock_flags); |
| |
| return 0; |
| } |
| |
| static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) |
| { |
| struct qed_ll2_info *p_ll2_conn = cookie; |
| struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; |
| union core_rx_cqe_union *cqe = NULL; |
| u16 cq_new_idx = 0, cq_old_idx = 0; |
| unsigned long flags = 0; |
| int rc = 0; |
| |
| spin_lock_irqsave(&p_rx->lock, flags); |
| cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); |
| cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); |
| |
| while (cq_new_idx != cq_old_idx) { |
| bool b_last_cqe = (cq_new_idx == cq_old_idx); |
| |
| cqe = qed_chain_consume(&p_rx->rcq_chain); |
| cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); |
| |
| DP_VERBOSE(p_hwfn, |
| QED_MSG_LL2, |
| "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", |
| cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); |
| |
| switch (cqe->rx_cqe_sp.type) { |
| case CORE_RX_CQE_TYPE_SLOW_PATH: |
| DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n"); |
| rc = -EINVAL; |
| break; |
| case CORE_RX_CQE_TYPE_GSI_OFFLOAD: |
| rc = qed_ll2_rxq_completion_gsi(p_hwfn, p_ll2_conn, |
| cqe, flags, b_last_cqe); |
| break; |
| case CORE_RX_CQE_TYPE_REGULAR: |
| rc = qed_ll2_rxq_completion_reg(p_hwfn, p_ll2_conn, |
| cqe, flags, b_last_cqe); |
| break; |
| default: |
| rc = -EIO; |
| } |
| } |
| |
| spin_unlock_irqrestore(&p_rx->lock, flags); |
| return rc; |
| } |
| |
| static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) |
| { |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| struct qed_ll2_rx_packet *p_pkt = NULL; |
| struct qed_ll2_rx_queue *p_rx; |
| |
| p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return; |
| |
| p_rx = &p_ll2_conn->rx_queue; |
| |
| while (!list_empty(&p_rx->active_descq)) { |
| dma_addr_t rx_buf_addr; |
| void *cookie; |
| bool b_last; |
| |
| p_pkt = list_first_entry(&p_rx->active_descq, |
| struct qed_ll2_rx_packet, list_entry); |
| if (!p_pkt) |
| break; |
| |
| list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); |
| |
| rx_buf_addr = p_pkt->rx_buf_addr; |
| cookie = p_pkt->cookie; |
| |
| b_last = list_empty(&p_rx->active_descq); |
| } |
| } |
| |
| static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn, |
| u8 action_on_error) |
| { |
| enum qed_ll2_conn_type conn_type = p_ll2_conn->conn_type; |
| struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; |
| struct core_rx_start_ramrod_data *p_ramrod = NULL; |
| struct qed_spq_entry *p_ent = NULL; |
| struct qed_sp_init_data init_data; |
| u16 cqe_pbl_size; |
| int rc = 0; |
| |
| /* Get SPQ entry */ |
| memset(&init_data, 0, sizeof(init_data)); |
| init_data.cid = p_ll2_conn->cid; |
| init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; |
| init_data.comp_mode = QED_SPQ_MODE_EBLOCK; |
| |
| rc = qed_sp_init_request(p_hwfn, &p_ent, |
| CORE_RAMROD_RX_QUEUE_START, |
| PROTOCOLID_CORE, &init_data); |
| if (rc) |
| return rc; |
| |
| p_ramrod = &p_ent->ramrod.core_rx_queue_start; |
| |
| p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); |
| p_ramrod->sb_index = p_rx->rx_sb_index; |
| p_ramrod->complete_event_flg = 1; |
| |
| p_ramrod->mtu = cpu_to_le16(p_ll2_conn->mtu); |
| DMA_REGPAIR_LE(p_ramrod->bd_base, |
| p_rx->rxq_chain.p_phys_addr); |
| cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); |
| p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); |
| DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, |
| qed_chain_get_pbl_phys(&p_rx->rcq_chain)); |
| |
| p_ramrod->drop_ttl0_flg = p_ll2_conn->rx_drop_ttl0_flg; |
| p_ramrod->inner_vlan_removal_en = p_ll2_conn->rx_vlan_removal_en; |
| p_ramrod->queue_id = p_ll2_conn->queue_id; |
| p_ramrod->main_func_queue = 1; |
| |
| if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) && |
| p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE)) { |
| p_ramrod->mf_si_bcast_accept_all = 1; |
| p_ramrod->mf_si_mcast_accept_all = 1; |
| } else { |
| p_ramrod->mf_si_bcast_accept_all = 0; |
| p_ramrod->mf_si_mcast_accept_all = 0; |
| } |
| |
| p_ramrod->action_on_error.error_type = action_on_error; |
| p_ramrod->gsi_offload_flag = p_ll2_conn->gsi_enable; |
| return qed_spq_post(p_hwfn, p_ent, NULL); |
| } |
| |
| static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn) |
| { |
| enum qed_ll2_conn_type conn_type = p_ll2_conn->conn_type; |
| struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; |
| struct core_tx_start_ramrod_data *p_ramrod = NULL; |
| struct qed_spq_entry *p_ent = NULL; |
| struct qed_sp_init_data init_data; |
| union qed_qm_pq_params pq_params; |
| u16 pq_id = 0, pbl_size; |
| int rc = -EINVAL; |
| |
| if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) |
| return 0; |
| |
| /* Get SPQ entry */ |
| memset(&init_data, 0, sizeof(init_data)); |
| init_data.cid = p_ll2_conn->cid; |
| init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; |
| init_data.comp_mode = QED_SPQ_MODE_EBLOCK; |
| |
| rc = qed_sp_init_request(p_hwfn, &p_ent, |
| CORE_RAMROD_TX_QUEUE_START, |
| PROTOCOLID_CORE, &init_data); |
| if (rc) |
| return rc; |
| |
| p_ramrod = &p_ent->ramrod.core_tx_queue_start; |
| |
| p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); |
| p_ramrod->sb_index = p_tx->tx_sb_index; |
| p_ramrod->mtu = cpu_to_le16(p_ll2_conn->mtu); |
| p_ll2_conn->tx_stats_en = 1; |
| p_ramrod->stats_en = p_ll2_conn->tx_stats_en; |
| p_ramrod->stats_id = p_ll2_conn->tx_stats_id; |
| |
| DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, |
| qed_chain_get_pbl_phys(&p_tx->txq_chain)); |
| pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); |
| p_ramrod->pbl_size = cpu_to_le16(pbl_size); |
| |
| memset(&pq_params, 0, sizeof(pq_params)); |
| pq_params.core.tc = p_ll2_conn->tx_tc; |
| pq_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_CORE, &pq_params); |
| p_ramrod->qm_pq_id = cpu_to_le16(pq_id); |
| |
| switch (conn_type) { |
| case QED_LL2_TYPE_ISCSI: |
| case QED_LL2_TYPE_ISCSI_OOO: |
| p_ramrod->conn_type = PROTOCOLID_ISCSI; |
| break; |
| case QED_LL2_TYPE_ROCE: |
| p_ramrod->conn_type = PROTOCOLID_ROCE; |
| break; |
| default: |
| p_ramrod->conn_type = PROTOCOLID_ETH; |
| DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); |
| } |
| |
| p_ramrod->gsi_offload_flag = p_ll2_conn->gsi_enable; |
| return qed_spq_post(p_hwfn, p_ent, NULL); |
| } |
| |
| static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn) |
| { |
| struct core_rx_stop_ramrod_data *p_ramrod = NULL; |
| struct qed_spq_entry *p_ent = NULL; |
| struct qed_sp_init_data init_data; |
| int rc = -EINVAL; |
| |
| /* Get SPQ entry */ |
| memset(&init_data, 0, sizeof(init_data)); |
| init_data.cid = p_ll2_conn->cid; |
| init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; |
| init_data.comp_mode = QED_SPQ_MODE_EBLOCK; |
| |
| rc = qed_sp_init_request(p_hwfn, &p_ent, |
| CORE_RAMROD_RX_QUEUE_STOP, |
| PROTOCOLID_CORE, &init_data); |
| if (rc) |
| return rc; |
| |
| p_ramrod = &p_ent->ramrod.core_rx_queue_stop; |
| |
| p_ramrod->complete_event_flg = 1; |
| p_ramrod->queue_id = p_ll2_conn->queue_id; |
| |
| return qed_spq_post(p_hwfn, p_ent, NULL); |
| } |
| |
| static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn) |
| { |
| struct qed_spq_entry *p_ent = NULL; |
| struct qed_sp_init_data init_data; |
| int rc = -EINVAL; |
| |
| /* Get SPQ entry */ |
| memset(&init_data, 0, sizeof(init_data)); |
| init_data.cid = p_ll2_conn->cid; |
| init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; |
| init_data.comp_mode = QED_SPQ_MODE_EBLOCK; |
| |
| rc = qed_sp_init_request(p_hwfn, &p_ent, |
| CORE_RAMROD_TX_QUEUE_STOP, |
| PROTOCOLID_CORE, &init_data); |
| if (rc) |
| return rc; |
| |
| return qed_spq_post(p_hwfn, p_ent, NULL); |
| } |
| |
| static int |
| qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_info, u16 rx_num_desc) |
| { |
| struct qed_ll2_rx_packet *p_descq; |
| u32 capacity; |
| int rc = 0; |
| |
| if (!rx_num_desc) |
| goto out; |
| |
| rc = qed_chain_alloc(p_hwfn->cdev, |
| QED_CHAIN_USE_TO_CONSUME_PRODUCE, |
| QED_CHAIN_MODE_NEXT_PTR, |
| QED_CHAIN_CNT_TYPE_U16, |
| rx_num_desc, |
| sizeof(struct core_rx_bd), |
| &p_ll2_info->rx_queue.rxq_chain); |
| if (rc) { |
| DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); |
| goto out; |
| } |
| |
| capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); |
| p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), |
| GFP_KERNEL); |
| if (!p_descq) { |
| rc = -ENOMEM; |
| DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); |
| goto out; |
| } |
| p_ll2_info->rx_queue.descq_array = p_descq; |
| |
| rc = qed_chain_alloc(p_hwfn->cdev, |
| QED_CHAIN_USE_TO_CONSUME_PRODUCE, |
| QED_CHAIN_MODE_PBL, |
| QED_CHAIN_CNT_TYPE_U16, |
| rx_num_desc, |
| sizeof(struct core_rx_fast_path_cqe), |
| &p_ll2_info->rx_queue.rcq_chain); |
| if (rc) { |
| DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); |
| goto out; |
| } |
| |
| DP_VERBOSE(p_hwfn, QED_MSG_LL2, |
| "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", |
| p_ll2_info->conn_type, rx_num_desc); |
| |
| out: |
| return rc; |
| } |
| |
| static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_info, |
| u16 tx_num_desc) |
| { |
| struct qed_ll2_tx_packet *p_descq; |
| u32 capacity; |
| int rc = 0; |
| |
| if (!tx_num_desc) |
| goto out; |
| |
| rc = qed_chain_alloc(p_hwfn->cdev, |
| QED_CHAIN_USE_TO_CONSUME_PRODUCE, |
| QED_CHAIN_MODE_PBL, |
| QED_CHAIN_CNT_TYPE_U16, |
| tx_num_desc, |
| sizeof(struct core_tx_bd), |
| &p_ll2_info->tx_queue.txq_chain); |
| if (rc) |
| goto out; |
| |
| capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); |
| p_descq = kcalloc(capacity, sizeof(struct qed_ll2_tx_packet), |
| GFP_KERNEL); |
| if (!p_descq) { |
| rc = -ENOMEM; |
| goto out; |
| } |
| p_ll2_info->tx_queue.descq_array = p_descq; |
| |
| DP_VERBOSE(p_hwfn, QED_MSG_LL2, |
| "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", |
| p_ll2_info->conn_type, tx_num_desc); |
| |
| out: |
| if (rc) |
| DP_NOTICE(p_hwfn, |
| "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", |
| tx_num_desc); |
| return rc; |
| } |
| |
| int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_params, |
| u16 rx_num_desc, |
| u16 tx_num_desc, |
| u8 *p_connection_handle) |
| { |
| qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; |
| struct qed_ll2_info *p_ll2_info = NULL; |
| int rc; |
| u8 i; |
| |
| if (!p_connection_handle || !p_hwfn->p_ll2_info) |
| return -EINVAL; |
| |
| /* Find a free connection to be used */ |
| for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { |
| mutex_lock(&p_hwfn->p_ll2_info[i].mutex); |
| if (p_hwfn->p_ll2_info[i].b_active) { |
| mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); |
| continue; |
| } |
| |
| p_hwfn->p_ll2_info[i].b_active = true; |
| p_ll2_info = &p_hwfn->p_ll2_info[i]; |
| mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); |
| break; |
| } |
| if (!p_ll2_info) |
| return -EBUSY; |
| |
| p_ll2_info->conn_type = p_params->conn_type; |
| p_ll2_info->mtu = p_params->mtu; |
| p_ll2_info->rx_drop_ttl0_flg = p_params->rx_drop_ttl0_flg; |
| p_ll2_info->rx_vlan_removal_en = p_params->rx_vlan_removal_en; |
| p_ll2_info->tx_tc = p_params->tx_tc; |
| p_ll2_info->tx_dest = p_params->tx_dest; |
| p_ll2_info->ai_err_packet_too_big = p_params->ai_err_packet_too_big; |
| p_ll2_info->ai_err_no_buf = p_params->ai_err_no_buf; |
| p_ll2_info->gsi_enable = p_params->gsi_enable; |
| |
| rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info, rx_num_desc); |
| if (rc) |
| goto q_allocate_fail; |
| |
| rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info, tx_num_desc); |
| if (rc) |
| goto q_allocate_fail; |
| |
| /* Register callbacks for the Rx/Tx queues */ |
| comp_rx_cb = qed_ll2_rxq_completion; |
| comp_tx_cb = qed_ll2_txq_completion; |
| |
| if (rx_num_desc) { |
| qed_int_register_cb(p_hwfn, comp_rx_cb, |
| &p_hwfn->p_ll2_info[i], |
| &p_ll2_info->rx_queue.rx_sb_index, |
| &p_ll2_info->rx_queue.p_fw_cons); |
| p_ll2_info->rx_queue.b_cb_registred = true; |
| } |
| |
| if (tx_num_desc) { |
| qed_int_register_cb(p_hwfn, |
| comp_tx_cb, |
| &p_hwfn->p_ll2_info[i], |
| &p_ll2_info->tx_queue.tx_sb_index, |
| &p_ll2_info->tx_queue.p_fw_cons); |
| p_ll2_info->tx_queue.b_cb_registred = true; |
| } |
| |
| *p_connection_handle = i; |
| return rc; |
| |
| q_allocate_fail: |
| qed_ll2_release_connection(p_hwfn, i); |
| return -ENOMEM; |
| } |
| |
| static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn) |
| { |
| u8 action_on_error = 0; |
| |
| if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) |
| return 0; |
| |
| DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); |
| |
| SET_FIELD(action_on_error, |
| CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, |
| p_ll2_conn->ai_err_packet_too_big); |
| SET_FIELD(action_on_error, |
| CORE_RX_ACTION_ON_ERROR_NO_BUFF, p_ll2_conn->ai_err_no_buf); |
| |
| return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); |
| } |
| |
| int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) |
| { |
| struct qed_ll2_info *p_ll2_conn; |
| struct qed_ll2_rx_queue *p_rx; |
| struct qed_ll2_tx_queue *p_tx; |
| int rc = -EINVAL; |
| u32 i, capacity; |
| u8 qid; |
| |
| p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return -EINVAL; |
| p_rx = &p_ll2_conn->rx_queue; |
| p_tx = &p_ll2_conn->tx_queue; |
| |
| qed_chain_reset(&p_rx->rxq_chain); |
| qed_chain_reset(&p_rx->rcq_chain); |
| INIT_LIST_HEAD(&p_rx->active_descq); |
| INIT_LIST_HEAD(&p_rx->free_descq); |
| INIT_LIST_HEAD(&p_rx->posting_descq); |
| spin_lock_init(&p_rx->lock); |
| capacity = qed_chain_get_capacity(&p_rx->rxq_chain); |
| for (i = 0; i < capacity; i++) |
| list_add_tail(&p_rx->descq_array[i].list_entry, |
| &p_rx->free_descq); |
| *p_rx->p_fw_cons = 0; |
| |
| qed_chain_reset(&p_tx->txq_chain); |
| INIT_LIST_HEAD(&p_tx->active_descq); |
| INIT_LIST_HEAD(&p_tx->free_descq); |
| INIT_LIST_HEAD(&p_tx->sending_descq); |
| spin_lock_init(&p_tx->lock); |
| capacity = qed_chain_get_capacity(&p_tx->txq_chain); |
| for (i = 0; i < capacity; i++) |
| list_add_tail(&p_tx->descq_array[i].list_entry, |
| &p_tx->free_descq); |
| p_tx->cur_completing_bd_idx = 0; |
| p_tx->bds_idx = 0; |
| p_tx->b_completing_packet = false; |
| p_tx->cur_send_packet = NULL; |
| p_tx->cur_send_frag_num = 0; |
| p_tx->cur_completing_frag_num = 0; |
| *p_tx->p_fw_cons = 0; |
| |
| qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); |
| |
| qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; |
| p_ll2_conn->queue_id = qid; |
| p_ll2_conn->tx_stats_id = qid; |
| p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + |
| GTT_BAR0_MAP_REG_TSDM_RAM + |
| TSTORM_LL2_RX_PRODS_OFFSET(qid); |
| p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + |
| qed_db_addr(p_ll2_conn->cid, |
| DQ_DEMS_LEGACY); |
| |
| rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); |
| if (rc) |
| return rc; |
| |
| rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); |
| if (rc) |
| return rc; |
| |
| if (p_hwfn->hw_info.personality != QED_PCI_ETH_ROCE) |
| qed_wr(p_hwfn, p_hwfn->p_main_ptt, PRS_REG_USE_LIGHT_L2, 1); |
| |
| return rc; |
| } |
| |
| static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_rx_queue *p_rx, |
| struct qed_ll2_rx_packet *p_curp) |
| { |
| struct qed_ll2_rx_packet *p_posting_packet = NULL; |
| struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; |
| bool b_notify_fw = false; |
| u16 bd_prod, cq_prod; |
| |
| /* This handles the flushing of already posted buffers */ |
| while (!list_empty(&p_rx->posting_descq)) { |
| p_posting_packet = list_first_entry(&p_rx->posting_descq, |
| struct qed_ll2_rx_packet, |
| list_entry); |
| list_move_tail(&p_posting_packet->list_entry, |
| &p_rx->active_descq); |
| b_notify_fw = true; |
| } |
| |
| /* This handles the supplied packet [if there is one] */ |
| if (p_curp) { |
| list_add_tail(&p_curp->list_entry, &p_rx->active_descq); |
| b_notify_fw = true; |
| } |
| |
| if (!b_notify_fw) |
| return; |
| |
| bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); |
| cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); |
| rx_prod.bd_prod = cpu_to_le16(bd_prod); |
| rx_prod.cqe_prod = cpu_to_le16(cq_prod); |
| DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); |
| } |
| |
| int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| dma_addr_t addr, |
| u16 buf_len, void *cookie, u8 notify_fw) |
| { |
| struct core_rx_bd_with_buff_len *p_curb = NULL; |
| struct qed_ll2_rx_packet *p_curp = NULL; |
| struct qed_ll2_info *p_ll2_conn; |
| struct qed_ll2_rx_queue *p_rx; |
| unsigned long flags; |
| void *p_data; |
| int rc = 0; |
| |
| p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return -EINVAL; |
| p_rx = &p_ll2_conn->rx_queue; |
| |
| spin_lock_irqsave(&p_rx->lock, flags); |
| if (!list_empty(&p_rx->free_descq)) |
| p_curp = list_first_entry(&p_rx->free_descq, |
| struct qed_ll2_rx_packet, list_entry); |
| if (p_curp) { |
| if (qed_chain_get_elem_left(&p_rx->rxq_chain) && |
| qed_chain_get_elem_left(&p_rx->rcq_chain)) { |
| p_data = qed_chain_produce(&p_rx->rxq_chain); |
| p_curb = (struct core_rx_bd_with_buff_len *)p_data; |
| qed_chain_produce(&p_rx->rcq_chain); |
| } |
| } |
| |
| /* If we're lacking entires, let's try to flush buffers to FW */ |
| if (!p_curp || !p_curb) { |
| rc = -EBUSY; |
| p_curp = NULL; |
| goto out_notify; |
| } |
| |
| /* We have an Rx packet we can fill */ |
| DMA_REGPAIR_LE(p_curb->addr, addr); |
| p_curb->buff_length = cpu_to_le16(buf_len); |
| p_curp->rx_buf_addr = addr; |
| p_curp->cookie = cookie; |
| p_curp->rxq_bd = p_curb; |
| p_curp->buf_length = buf_len; |
| list_del(&p_curp->list_entry); |
| |
| /* Check if we only want to enqueue this packet without informing FW */ |
| if (!notify_fw) { |
| list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); |
| goto out; |
| } |
| |
| out_notify: |
| qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); |
| out: |
| spin_unlock_irqrestore(&p_rx->lock, flags); |
| return rc; |
| } |
| |
| static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_tx_queue *p_tx, |
| struct qed_ll2_tx_packet *p_curp, |
| u8 num_of_bds, |
| dma_addr_t first_frag, |
| u16 first_frag_len, void *p_cookie, |
| u8 notify_fw) |
| { |
| list_del(&p_curp->list_entry); |
| p_curp->cookie = p_cookie; |
| p_curp->bd_used = num_of_bds; |
| p_curp->notify_fw = notify_fw; |
| p_tx->cur_send_packet = p_curp; |
| p_tx->cur_send_frag_num = 0; |
| |
| p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = first_frag; |
| p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = first_frag_len; |
| p_tx->cur_send_frag_num++; |
| } |
| |
| static void qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2, |
| struct qed_ll2_tx_packet *p_curp, |
| u8 num_of_bds, |
| enum core_tx_dest tx_dest, |
| u16 vlan, |
| u8 bd_flags, |
| u16 l4_hdr_offset_w, |
| enum core_roce_flavor_type type, |
| dma_addr_t first_frag, |
| u16 first_frag_len) |
| { |
| struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; |
| u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); |
| struct core_tx_bd *start_bd = NULL; |
| u16 frag_idx; |
| |
| start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); |
| start_bd->nw_vlan_or_lb_echo = cpu_to_le16(vlan); |
| SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, |
| cpu_to_le16(l4_hdr_offset_w)); |
| SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); |
| start_bd->bd_flags.as_bitfield = bd_flags; |
| start_bd->bd_flags.as_bitfield |= CORE_TX_BD_FLAGS_START_BD_MASK << |
| CORE_TX_BD_FLAGS_START_BD_SHIFT; |
| SET_FIELD(start_bd->bitfield0, CORE_TX_BD_NBDS, num_of_bds); |
| DMA_REGPAIR_LE(start_bd->addr, first_frag); |
| start_bd->nbytes = cpu_to_le16(first_frag_len); |
| |
| DP_VERBOSE(p_hwfn, |
| (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), |
| "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Tx Producer at [0x%04x] - set with a %04x bytes %02x BDs buffer at %08x:%08x\n", |
| p_ll2->queue_id, |
| p_ll2->cid, |
| p_ll2->conn_type, |
| prod_idx, |
| first_frag_len, |
| num_of_bds, |
| le32_to_cpu(start_bd->addr.hi), |
| le32_to_cpu(start_bd->addr.lo)); |
| |
| if (p_ll2->tx_queue.cur_send_frag_num == num_of_bds) |
| return; |
| |
| /* Need to provide the packet with additional BDs for frags */ |
| for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; |
| frag_idx < num_of_bds; frag_idx++) { |
| struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; |
| |
| *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); |
| (*p_bd)->bd_flags.as_bitfield = 0; |
| (*p_bd)->bitfield1 = 0; |
| (*p_bd)->bitfield0 = 0; |
| p_curp->bds_set[frag_idx].tx_frag = 0; |
| p_curp->bds_set[frag_idx].frag_len = 0; |
| } |
| } |
| |
| /* This should be called while the Txq spinlock is being held */ |
| static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_conn) |
| { |
| bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; |
| struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; |
| struct qed_ll2_tx_packet *p_pkt = NULL; |
| struct core_db_data db_msg = { 0, 0, 0 }; |
| u16 bd_prod; |
| |
| /* If there are missing BDs, don't do anything now */ |
| if (p_ll2_conn->tx_queue.cur_send_frag_num != |
| p_ll2_conn->tx_queue.cur_send_packet->bd_used) |
| return; |
| |
| /* Push the current packet to the list and clean after it */ |
| list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, |
| &p_ll2_conn->tx_queue.sending_descq); |
| p_ll2_conn->tx_queue.cur_send_packet = NULL; |
| p_ll2_conn->tx_queue.cur_send_frag_num = 0; |
| |
| /* Notify FW of packet only if requested to */ |
| if (!b_notify) |
| return; |
| |
| bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); |
| |
| while (!list_empty(&p_tx->sending_descq)) { |
| p_pkt = list_first_entry(&p_tx->sending_descq, |
| struct qed_ll2_tx_packet, list_entry); |
| if (!p_pkt) |
| break; |
| |
| list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); |
| } |
| |
| SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); |
| SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); |
| SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, |
| DQ_XCM_CORE_TX_BD_PROD_CMD); |
| db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; |
| db_msg.spq_prod = cpu_to_le16(bd_prod); |
| |
| /* Make sure the BDs data is updated before ringing the doorbell */ |
| wmb(); |
| |
| DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); |
| |
| DP_VERBOSE(p_hwfn, |
| (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), |
| "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", |
| p_ll2_conn->queue_id, |
| p_ll2_conn->cid, p_ll2_conn->conn_type, db_msg.spq_prod); |
| } |
| |
| int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| u8 num_of_bds, |
| u16 vlan, |
| u8 bd_flags, |
| u16 l4_hdr_offset_w, |
| enum qed_ll2_roce_flavor_type qed_roce_flavor, |
| dma_addr_t first_frag, |
| u16 first_frag_len, void *cookie, u8 notify_fw) |
| { |
| struct qed_ll2_tx_packet *p_curp = NULL; |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| enum core_roce_flavor_type roce_flavor; |
| struct qed_ll2_tx_queue *p_tx; |
| struct qed_chain *p_tx_chain; |
| unsigned long flags; |
| int rc = 0; |
| |
| p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return -EINVAL; |
| p_tx = &p_ll2_conn->tx_queue; |
| p_tx_chain = &p_tx->txq_chain; |
| |
| if (num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET) |
| return -EIO; |
| |
| spin_lock_irqsave(&p_tx->lock, flags); |
| if (p_tx->cur_send_packet) { |
| rc = -EEXIST; |
| goto out; |
| } |
| |
| /* Get entry, but only if we have tx elements for it */ |
| if (!list_empty(&p_tx->free_descq)) |
| p_curp = list_first_entry(&p_tx->free_descq, |
| struct qed_ll2_tx_packet, list_entry); |
| if (p_curp && qed_chain_get_elem_left(p_tx_chain) < num_of_bds) |
| p_curp = NULL; |
| |
| if (!p_curp) { |
| rc = -EBUSY; |
| goto out; |
| } |
| |
| if (qed_roce_flavor == QED_LL2_ROCE) { |
| roce_flavor = CORE_ROCE; |
| } else if (qed_roce_flavor == QED_LL2_RROCE) { |
| roce_flavor = CORE_RROCE; |
| } else { |
| rc = -EINVAL; |
| goto out; |
| } |
| |
| /* Prepare packet and BD, and perhaps send a doorbell to FW */ |
| qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, |
| num_of_bds, first_frag, |
| first_frag_len, cookie, notify_fw); |
| qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, |
| num_of_bds, CORE_TX_DEST_NW, |
| vlan, bd_flags, l4_hdr_offset_w, |
| roce_flavor, |
| first_frag, first_frag_len); |
| |
| qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); |
| |
| out: |
| spin_unlock_irqrestore(&p_tx->lock, flags); |
| return rc; |
| } |
| |
| int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, |
| dma_addr_t addr, u16 nbytes) |
| { |
| struct qed_ll2_tx_packet *p_cur_send_packet = NULL; |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| u16 cur_send_frag_num = 0; |
| struct core_tx_bd *p_bd; |
| unsigned long flags; |
| |
| p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return -EINVAL; |
| |
| if (!p_ll2_conn->tx_queue.cur_send_packet) |
| return -EINVAL; |
| |
| p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; |
| cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; |
| |
| if (cur_send_frag_num >= p_cur_send_packet->bd_used) |
| return -EINVAL; |
| |
| /* Fill the BD information, and possibly notify FW */ |
| p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; |
| DMA_REGPAIR_LE(p_bd->addr, addr); |
| p_bd->nbytes = cpu_to_le16(nbytes); |
| p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; |
| p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; |
| |
| p_ll2_conn->tx_queue.cur_send_frag_num++; |
| |
| spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); |
| qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); |
| spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); |
| |
| return 0; |
| } |
| |
| int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) |
| { |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| int rc = -EINVAL; |
| |
| p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return -EINVAL; |
| |
| /* Stop Tx & Rx of connection, if needed */ |
| if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { |
| rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); |
| if (rc) |
| return rc; |
| qed_ll2_txq_flush(p_hwfn, connection_handle); |
| } |
| |
| if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { |
| rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); |
| if (rc) |
| return rc; |
| qed_ll2_rxq_flush(p_hwfn, connection_handle); |
| } |
| |
| return rc; |
| } |
| |
| void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) |
| { |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| |
| p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); |
| if (!p_ll2_conn) |
| return; |
| |
| if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { |
| p_ll2_conn->rx_queue.b_cb_registred = false; |
| qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); |
| } |
| |
| if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { |
| p_ll2_conn->tx_queue.b_cb_registred = false; |
| qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); |
| } |
| |
| kfree(p_ll2_conn->tx_queue.descq_array); |
| qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); |
| |
| kfree(p_ll2_conn->rx_queue.descq_array); |
| qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); |
| qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); |
| |
| qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); |
| |
| mutex_lock(&p_ll2_conn->mutex); |
| p_ll2_conn->b_active = false; |
| mutex_unlock(&p_ll2_conn->mutex); |
| } |
| |
| struct qed_ll2_info *qed_ll2_alloc(struct qed_hwfn *p_hwfn) |
| { |
| struct qed_ll2_info *p_ll2_connections; |
| u8 i; |
| |
| /* Allocate LL2's set struct */ |
| p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, |
| sizeof(struct qed_ll2_info), GFP_KERNEL); |
| if (!p_ll2_connections) { |
| DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); |
| return NULL; |
| } |
| |
| for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) |
| p_ll2_connections[i].my_id = i; |
| |
| return p_ll2_connections; |
| } |
| |
| void qed_ll2_setup(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_connections) |
| { |
| int i; |
| |
| for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) |
| mutex_init(&p_ll2_connections[i].mutex); |
| } |
| |
| void qed_ll2_free(struct qed_hwfn *p_hwfn, |
| struct qed_ll2_info *p_ll2_connections) |
| { |
| kfree(p_ll2_connections); |
| } |
| |
| static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, |
| struct qed_ptt *p_ptt, |
| struct qed_ll2_info *p_ll2_conn, |
| struct qed_ll2_stats *p_stats) |
| { |
| struct core_ll2_tstorm_per_queue_stat tstats; |
| u8 qid = p_ll2_conn->queue_id; |
| u32 tstats_addr; |
| |
| memset(&tstats, 0, sizeof(tstats)); |
| tstats_addr = BAR0_MAP_REG_TSDM_RAM + |
| CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); |
| qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); |
| |
| p_stats->packet_too_big_discard = |
| HILO_64_REGPAIR(tstats.packet_too_big_discard); |
| p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard); |
| } |
| |
| static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, |
| struct qed_ptt *p_ptt, |
| struct qed_ll2_info *p_ll2_conn, |
| struct qed_ll2_stats *p_stats) |
| { |
| struct core_ll2_ustorm_per_queue_stat ustats; |
| u8 qid = p_ll2_conn->queue_id; |
| u32 ustats_addr; |
| |
| memset(&ustats, 0, sizeof(ustats)); |
| ustats_addr = BAR0_MAP_REG_USDM_RAM + |
| CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); |
| qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); |
| |
| p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes); |
| p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes); |
| p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes); |
| p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts); |
| p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts); |
| p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts); |
| } |
| |
| static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, |
| struct qed_ptt *p_ptt, |
| struct qed_ll2_info *p_ll2_conn, |
| struct qed_ll2_stats *p_stats) |
| { |
| struct core_ll2_pstorm_per_queue_stat pstats; |
| u8 stats_id = p_ll2_conn->tx_stats_id; |
| u32 pstats_addr; |
| |
| memset(&pstats, 0, sizeof(pstats)); |
| pstats_addr = BAR0_MAP_REG_PSDM_RAM + |
| CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); |
| qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); |
| |
| p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes); |
| p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes); |
| p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes); |
| p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts); |
| p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts); |
| p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts); |
| } |
| |
| int qed_ll2_get_stats(struct qed_hwfn *p_hwfn, |
| u8 connection_handle, struct qed_ll2_stats *p_stats) |
| { |
| struct qed_ll2_info *p_ll2_conn = NULL; |
| struct qed_ptt *p_ptt; |
| |
| memset(p_stats, 0, sizeof(*p_stats)); |
| |
| if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || |
| !p_hwfn->p_ll2_info) |
| return -EINVAL; |
| |
| p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; |
| |
| p_ptt = qed_ptt_acquire(p_hwfn); |
| if (!p_ptt) { |
| DP_ERR(p_hwfn, "Failed to acquire ptt\n"); |
| return -EINVAL; |
| } |
| |
| _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); |
| _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); |
| if (p_ll2_conn->tx_stats_en) |
| _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); |
| |
| qed_ptt_release(p_hwfn, p_ptt); |
| return 0; |
| } |
| |
| static void qed_ll2_register_cb_ops(struct qed_dev *cdev, |
| const struct qed_ll2_cb_ops *ops, |
| void *cookie) |
| { |
| cdev->ll2->cbs = ops; |
| cdev->ll2->cb_cookie = cookie; |
| } |
| |
| static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) |
| { |
| struct qed_ll2_info ll2_info; |
| struct qed_ll2_buffer *buffer, *tmp_buffer; |
| enum qed_ll2_conn_type conn_type; |
| struct qed_ptt *p_ptt; |
| int rc, i; |
| |
| /* Initialize LL2 locks & lists */ |
| INIT_LIST_HEAD(&cdev->ll2->list); |
| spin_lock_init(&cdev->ll2->lock); |
| cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + |
| L1_CACHE_BYTES + params->mtu; |
| cdev->ll2->frags_mapped = params->frags_mapped; |
| |
| /*Allocate memory for LL2 */ |
| DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", |
| cdev->ll2->rx_size); |
| for (i = 0; i < QED_LL2_RX_SIZE; i++) { |
| buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); |
| if (!buffer) { |
| DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); |
| goto fail; |
| } |
| |
| rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, |
| &buffer->phys_addr); |
| if (rc) { |
| kfree(buffer); |
| goto fail; |
| } |
| |
| list_add_tail(&buffer->list, &cdev->ll2->list); |
| } |
| |
| switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { |
| case QED_PCI_ISCSI: |
| conn_type = QED_LL2_TYPE_ISCSI; |
| break; |
| case QED_PCI_ETH_ROCE: |
| conn_type = QED_LL2_TYPE_ROCE; |
| break; |
| default: |
| conn_type = QED_LL2_TYPE_TEST; |
| } |
| |
| /* Prepare the temporary ll2 information */ |
| memset(&ll2_info, 0, sizeof(ll2_info)); |
| ll2_info.conn_type = conn_type; |
| ll2_info.mtu = params->mtu; |
| ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets; |
| ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; |
| ll2_info.tx_tc = 0; |
| ll2_info.tx_dest = CORE_TX_DEST_NW; |
| ll2_info.gsi_enable = 1; |
| |
| rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info, |
| QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, |
| &cdev->ll2->handle); |
| if (rc) { |
| DP_INFO(cdev, "Failed to acquire LL2 connection\n"); |
| goto fail; |
| } |
| |
| rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle); |
| if (rc) { |
| DP_INFO(cdev, "Failed to establish LL2 connection\n"); |
| goto release_fail; |
| } |
| |
| /* Post all Rx buffers to FW */ |
| spin_lock_bh(&cdev->ll2->lock); |
| list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { |
| rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle, |
| buffer->phys_addr, 0, buffer, 1); |
| if (rc) { |
| DP_INFO(cdev, |
| "Failed to post an Rx buffer; Deleting it\n"); |
| dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, |
| cdev->ll2->rx_size, DMA_FROM_DEVICE); |
| kfree(buffer->data); |
| list_del(&buffer->list); |
| kfree(buffer); |
| } else { |
| cdev->ll2->rx_cnt++; |
| } |
| } |
| spin_unlock_bh(&cdev->ll2->lock); |
| |
| if (!cdev->ll2->rx_cnt) { |
| DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); |
| goto release_terminate; |
| } |
| |
| if (!is_valid_ether_addr(params->ll2_mac_address)) { |
| DP_INFO(cdev, "Invalid Ethernet address\n"); |
| goto release_terminate; |
| } |
| |
| p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); |
| if (!p_ptt) { |
| DP_INFO(cdev, "Failed to acquire PTT\n"); |
| goto release_terminate; |
| } |
| |
| rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, |
| params->ll2_mac_address); |
| qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); |
| if (rc) { |
| DP_ERR(cdev, "Failed to allocate LLH filter\n"); |
| goto release_terminate_all; |
| } |
| |
| ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); |
| |
| return 0; |
| |
| release_terminate_all: |
| |
| release_terminate: |
| qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); |
| release_fail: |
| qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); |
| fail: |
| qed_ll2_kill_buffers(cdev); |
| cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; |
| return -EINVAL; |
| } |
| |
| static int qed_ll2_stop(struct qed_dev *cdev) |
| { |
| struct qed_ptt *p_ptt; |
| int rc; |
| |
| if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) |
| return 0; |
| |
| p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); |
| if (!p_ptt) { |
| DP_INFO(cdev, "Failed to acquire PTT\n"); |
| goto fail; |
| } |
| |
| qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, |
| cdev->ll2_mac_address); |
| qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); |
| eth_zero_addr(cdev->ll2_mac_address); |
| |
| rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle); |
| if (rc) |
| DP_INFO(cdev, "Failed to terminate LL2 connection\n"); |
| |
| qed_ll2_kill_buffers(cdev); |
| |
| qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); |
| cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; |
| |
| return rc; |
| fail: |
| return -EINVAL; |
| } |
| |
| static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb) |
| { |
| const skb_frag_t *frag; |
| int rc = -EINVAL, i; |
| dma_addr_t mapping; |
| u16 vlan = 0; |
| u8 flags = 0; |
| |
| if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { |
| DP_INFO(cdev, "Cannot transmit a checksumed packet\n"); |
| return -EINVAL; |
| } |
| |
| if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { |
| DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", |
| 1 + skb_shinfo(skb)->nr_frags); |
| return -EINVAL; |
| } |
| |
| mapping = dma_map_single(&cdev->pdev->dev, skb->data, |
| skb->len, DMA_TO_DEVICE); |
| if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { |
| DP_NOTICE(cdev, "SKB mapping failed\n"); |
| return -EINVAL; |
| } |
| |
| /* Request HW to calculate IP csum */ |
| if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && |
| ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) |
| flags |= BIT(CORE_TX_BD_FLAGS_IP_CSUM_SHIFT); |
| |
| if (skb_vlan_tag_present(skb)) { |
| vlan = skb_vlan_tag_get(skb); |
| flags |= BIT(CORE_TX_BD_FLAGS_VLAN_INSERTION_SHIFT); |
| } |
| |
| rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle, |
| 1 + skb_shinfo(skb)->nr_frags, |
| vlan, flags, 0, 0 /* RoCE FLAVOR */, |
| mapping, skb->len, skb, 1); |
| if (rc) |
| goto err; |
| |
| for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| frag = &skb_shinfo(skb)->frags[i]; |
| if (!cdev->ll2->frags_mapped) { |
| mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, |
| skb_frag_size(frag), |
| DMA_TO_DEVICE); |
| |
| if (unlikely(dma_mapping_error(&cdev->pdev->dev, |
| mapping))) { |
| DP_NOTICE(cdev, |
| "Unable to map frag - dropping packet\n"); |
| goto err; |
| } |
| } else { |
| mapping = page_to_phys(skb_frag_page(frag)) | |
| frag->page_offset; |
| } |
| |
| rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle, |
| mapping, |
| skb_frag_size(frag)); |
| |
| /* if failed not much to do here, partial packet has been posted |
| * we can't free memory, will need to wait for completion. |
| */ |
| if (rc) |
| goto err2; |
| } |
| |
| return 0; |
| |
| err: |
| dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); |
| |
| err2: |
| return rc; |
| } |
| |
| static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) |
| { |
| if (!cdev->ll2) |
| return -EINVAL; |
| |
| return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), |
| cdev->ll2->handle, stats); |
| } |
| |
| const struct qed_ll2_ops qed_ll2_ops_pass = { |
| .start = &qed_ll2_start, |
| .stop = &qed_ll2_stop, |
| .start_xmit = &qed_ll2_start_xmit, |
| .register_cb_ops = &qed_ll2_register_cb_ops, |
| .get_stats = &qed_ll2_stats, |
| }; |
| |
| int qed_ll2_alloc_if(struct qed_dev *cdev) |
| { |
| cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); |
| return cdev->ll2 ? 0 : -ENOMEM; |
| } |
| |
| void qed_ll2_dealloc_if(struct qed_dev *cdev) |
| { |
| kfree(cdev->ll2); |
| cdev->ll2 = NULL; |
| } |