11f4d4ed6SAlexander Lobakin // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 20a7fb11cSYuval Mintz /* QLogic qed NIC Driver 3e8f1cb50SMintz, Yuval * Copyright (c) 2015-2017 QLogic Corporation 4663eacd8SAlexander Lobakin * Copyright (c) 2019-2020 Marvell International Ltd. 50a7fb11cSYuval Mintz */ 60a7fb11cSYuval Mintz 70a7fb11cSYuval Mintz #include <linux/types.h> 80a7fb11cSYuval Mintz #include <asm/byteorder.h> 90a7fb11cSYuval Mintz #include <linux/dma-mapping.h> 100a7fb11cSYuval Mintz #include <linux/if_vlan.h> 110a7fb11cSYuval Mintz #include <linux/kernel.h> 120a7fb11cSYuval Mintz #include <linux/pci.h> 130a7fb11cSYuval Mintz #include <linux/slab.h> 140a7fb11cSYuval Mintz #include <linux/stddef.h> 150a7fb11cSYuval Mintz #include <linux/workqueue.h> 160a7fb11cSYuval Mintz #include <net/ipv6.h> 170a7fb11cSYuval Mintz #include <linux/bitops.h> 180a7fb11cSYuval Mintz #include <linux/delay.h> 190a7fb11cSYuval Mintz #include <linux/errno.h> 200a7fb11cSYuval Mintz #include <linux/etherdevice.h> 210a7fb11cSYuval Mintz #include <linux/io.h> 220a7fb11cSYuval Mintz #include <linux/list.h> 230a7fb11cSYuval Mintz #include <linux/mutex.h> 240a7fb11cSYuval Mintz #include <linux/spinlock.h> 250a7fb11cSYuval Mintz #include <linux/string.h> 260a7fb11cSYuval Mintz #include <linux/qed/qed_ll2_if.h> 270a7fb11cSYuval Mintz #include "qed.h" 280a7fb11cSYuval Mintz #include "qed_cxt.h" 290a7fb11cSYuval Mintz #include "qed_dev_api.h" 300a7fb11cSYuval Mintz #include "qed_hsi.h" 310a7fb11cSYuval Mintz #include "qed_hw.h" 320a7fb11cSYuval Mintz #include "qed_int.h" 330a7fb11cSYuval Mintz #include "qed_ll2.h" 340a7fb11cSYuval Mintz #include "qed_mcp.h" 351d6cff4fSYuval Mintz #include "qed_ooo.h" 360a7fb11cSYuval Mintz #include "qed_reg_addr.h" 370a7fb11cSYuval Mintz #include "qed_sp.h" 38b71b9afdSKalderon, Michal #include "qed_rdma.h" 390a7fb11cSYuval Mintz 406a42b512SColin Ian King #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered) 416a42b512SColin Ian King #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered) 420a7fb11cSYuval Mintz 430a7fb11cSYuval Mintz #define QED_LL2_TX_SIZE (256) 440a7fb11cSYuval Mintz #define QED_LL2_RX_SIZE (4096) 450a7fb11cSYuval Mintz 460a7fb11cSYuval Mintz struct qed_cb_ll2_info { 470a7fb11cSYuval Mintz int rx_cnt; 480a7fb11cSYuval Mintz u32 rx_size; 490a7fb11cSYuval Mintz u8 handle; 500a7fb11cSYuval Mintz 510a7fb11cSYuval Mintz /* Lock protecting LL2 buffer lists in sleepless context */ 520a7fb11cSYuval Mintz spinlock_t lock; 530a7fb11cSYuval Mintz struct list_head list; 540a7fb11cSYuval Mintz 550a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *cbs; 560a7fb11cSYuval Mintz void *cb_cookie; 570a7fb11cSYuval Mintz }; 580a7fb11cSYuval Mintz 590a7fb11cSYuval Mintz struct qed_ll2_buffer { 600a7fb11cSYuval Mintz struct list_head list; 610a7fb11cSYuval Mintz void *data; 620a7fb11cSYuval Mintz dma_addr_t phys_addr; 630a7fb11cSYuval Mintz }; 640a7fb11cSYuval Mintz 650518c12fSMichal Kalderon static void qed_ll2b_complete_tx_packet(void *cxt, 660a7fb11cSYuval Mintz u8 connection_handle, 670a7fb11cSYuval Mintz void *cookie, 680a7fb11cSYuval Mintz dma_addr_t first_frag_addr, 690a7fb11cSYuval Mintz bool b_last_fragment, 700a7fb11cSYuval Mintz bool b_last_packet) 710a7fb11cSYuval Mintz { 720518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 730a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 740a7fb11cSYuval Mintz struct sk_buff *skb = cookie; 750a7fb11cSYuval Mintz 760a7fb11cSYuval Mintz /* All we need to do is release the mapping */ 770a7fb11cSYuval Mintz dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, 780a7fb11cSYuval Mintz skb_headlen(skb), DMA_TO_DEVICE); 790a7fb11cSYuval Mintz 800a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) 810a7fb11cSYuval Mintz cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, 820a7fb11cSYuval Mintz b_last_fragment); 830a7fb11cSYuval Mintz 840a7fb11cSYuval Mintz dev_kfree_skb_any(skb); 850a7fb11cSYuval Mintz } 860a7fb11cSYuval Mintz 870a7fb11cSYuval Mintz static int qed_ll2_alloc_buffer(struct qed_dev *cdev, 880a7fb11cSYuval Mintz u8 **data, dma_addr_t *phys_addr) 890a7fb11cSYuval Mintz { 900a7fb11cSYuval Mintz *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); 910a7fb11cSYuval Mintz if (!(*data)) { 920a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); 930a7fb11cSYuval Mintz return -ENOMEM; 940a7fb11cSYuval Mintz } 950a7fb11cSYuval Mintz 960a7fb11cSYuval Mintz *phys_addr = dma_map_single(&cdev->pdev->dev, 970a7fb11cSYuval Mintz ((*data) + NET_SKB_PAD), 980a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 990a7fb11cSYuval Mintz if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { 1000a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to map LL2 buffer data\n"); 1010a7fb11cSYuval Mintz kfree((*data)); 1020a7fb11cSYuval Mintz return -ENOMEM; 1030a7fb11cSYuval Mintz } 1040a7fb11cSYuval Mintz 1050a7fb11cSYuval Mintz return 0; 1060a7fb11cSYuval Mintz } 1070a7fb11cSYuval Mintz 1080a7fb11cSYuval Mintz static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, 1090a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer) 1100a7fb11cSYuval Mintz { 1110a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 1120a7fb11cSYuval Mintz 1130a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 1140a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1150a7fb11cSYuval Mintz kfree(buffer->data); 1160a7fb11cSYuval Mintz list_del(&buffer->list); 1170a7fb11cSYuval Mintz 1180a7fb11cSYuval Mintz cdev->ll2->rx_cnt--; 1190a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) 1200a7fb11cSYuval Mintz DP_INFO(cdev, "All LL2 entries were removed\n"); 1210a7fb11cSYuval Mintz 1220a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 1230a7fb11cSYuval Mintz 1240a7fb11cSYuval Mintz return 0; 1250a7fb11cSYuval Mintz } 1260a7fb11cSYuval Mintz 1270a7fb11cSYuval Mintz static void qed_ll2_kill_buffers(struct qed_dev *cdev) 1280a7fb11cSYuval Mintz { 1290a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer, *tmp_buffer; 1300a7fb11cSYuval Mintz 1310a7fb11cSYuval Mintz list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) 1320a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 1330a7fb11cSYuval Mintz } 1340a7fb11cSYuval Mintz 135bf774d14SYueHaibing static void qed_ll2b_complete_rx_packet(void *cxt, 136bf774d14SYueHaibing struct qed_ll2_comp_rx_data *data) 1370a7fb11cSYuval Mintz { 1380518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13968be910cSMintz, Yuval struct qed_ll2_buffer *buffer = data->cookie; 1400a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1410a7fb11cSYuval Mintz dma_addr_t new_phys_addr; 1420a7fb11cSYuval Mintz struct sk_buff *skb; 1430a7fb11cSYuval Mintz bool reuse = false; 1440a7fb11cSYuval Mintz int rc = -EINVAL; 1450a7fb11cSYuval Mintz u8 *new_data; 1460a7fb11cSYuval Mintz 1470a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 1480a7fb11cSYuval Mintz (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), 1490a7fb11cSYuval Mintz "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", 15068be910cSMintz, Yuval (u64)data->rx_buf_addr, 15168be910cSMintz, Yuval data->u.placement_offset, 15268be910cSMintz, Yuval data->length.packet_length, 15368be910cSMintz, Yuval data->parse_flags, 15468be910cSMintz, Yuval data->vlan, data->opaque_data_0, data->opaque_data_1); 1550a7fb11cSYuval Mintz 1560a7fb11cSYuval Mintz if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { 1570a7fb11cSYuval Mintz print_hex_dump(KERN_INFO, "", 1580a7fb11cSYuval Mintz DUMP_PREFIX_OFFSET, 16, 1, 15968be910cSMintz, Yuval buffer->data, data->length.packet_length, false); 1600a7fb11cSYuval Mintz } 1610a7fb11cSYuval Mintz 1620a7fb11cSYuval Mintz /* Determine if data is valid */ 16368be910cSMintz, Yuval if (data->length.packet_length < ETH_HLEN) 1640a7fb11cSYuval Mintz reuse = true; 1650a7fb11cSYuval Mintz 1660a7fb11cSYuval Mintz /* Allocate a replacement for buffer; Reuse upon failure */ 1670a7fb11cSYuval Mintz if (!reuse) 1680a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, 1690a7fb11cSYuval Mintz &new_phys_addr); 1700a7fb11cSYuval Mintz 1710a7fb11cSYuval Mintz /* If need to reuse or there's no replacement buffer, repost this */ 1720a7fb11cSYuval Mintz if (rc) 1730a7fb11cSYuval Mintz goto out_post; 174752ecb2dSMintz, Yuval dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 175752ecb2dSMintz, Yuval cdev->ll2->rx_size, DMA_FROM_DEVICE); 1760a7fb11cSYuval Mintz 1770a7fb11cSYuval Mintz skb = build_skb(buffer->data, 0); 1780a7fb11cSYuval Mintz if (!skb) { 1794f9de4dfSSudarsana Reddy Kalluru DP_INFO(cdev, "Failed to build SKB\n"); 1804f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 1814f9de4dfSSudarsana Reddy Kalluru goto out_post1; 1820a7fb11cSYuval Mintz } 1830a7fb11cSYuval Mintz 18468be910cSMintz, Yuval data->u.placement_offset += NET_SKB_PAD; 18568be910cSMintz, Yuval skb_reserve(skb, data->u.placement_offset); 18668be910cSMintz, Yuval skb_put(skb, data->length.packet_length); 1870a7fb11cSYuval Mintz skb_checksum_none_assert(skb); 1880a7fb11cSYuval Mintz 1890a7fb11cSYuval Mintz /* Get parital ethernet information instead of eth_type_trans(), 1900a7fb11cSYuval Mintz * Since we don't have an associated net_device. 1910a7fb11cSYuval Mintz */ 1920a7fb11cSYuval Mintz skb_reset_mac_header(skb); 1930a7fb11cSYuval Mintz skb->protocol = eth_hdr(skb)->h_proto; 1940a7fb11cSYuval Mintz 1950a7fb11cSYuval Mintz /* Pass SKB onward */ 1960a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { 19768be910cSMintz, Yuval if (data->vlan) 19868be910cSMintz, Yuval __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 19968be910cSMintz, Yuval data->vlan); 2000a7fb11cSYuval Mintz cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, 20168be910cSMintz, Yuval data->opaque_data_0, 20268be910cSMintz, Yuval data->opaque_data_1); 2034f9de4dfSSudarsana Reddy Kalluru } else { 2044f9de4dfSSudarsana Reddy Kalluru DP_VERBOSE(p_hwfn, (NETIF_MSG_RX_STATUS | NETIF_MSG_PKTDATA | 2054f9de4dfSSudarsana Reddy Kalluru QED_MSG_LL2 | QED_MSG_STORAGE), 2064f9de4dfSSudarsana Reddy Kalluru "Dropping the packet\n"); 2074f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 2080a7fb11cSYuval Mintz } 2090a7fb11cSYuval Mintz 2104f9de4dfSSudarsana Reddy Kalluru out_post1: 2110a7fb11cSYuval Mintz /* Update Buffer information and update FW producer */ 2120a7fb11cSYuval Mintz buffer->data = new_data; 2130a7fb11cSYuval Mintz buffer->phys_addr = new_phys_addr; 2140a7fb11cSYuval Mintz 2150a7fb11cSYuval Mintz out_post: 2167e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, cdev->ll2->handle, 2170a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2180a7fb11cSYuval Mintz if (rc) 2190a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 2200a7fb11cSYuval Mintz } 2210a7fb11cSYuval Mintz 2220a7fb11cSYuval Mintz static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2230a7fb11cSYuval Mintz u8 connection_handle, 2240a7fb11cSYuval Mintz bool b_lock, 2250a7fb11cSYuval Mintz bool b_only_active) 2260a7fb11cSYuval Mintz { 2270a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2280a7fb11cSYuval Mintz 2290a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2300a7fb11cSYuval Mintz return NULL; 2310a7fb11cSYuval Mintz 2320a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2330a7fb11cSYuval Mintz return NULL; 2340a7fb11cSYuval Mintz 2350a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2360a7fb11cSYuval Mintz 2370a7fb11cSYuval Mintz if (b_only_active) { 2380a7fb11cSYuval Mintz if (b_lock) 2390a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2400a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2410a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2420a7fb11cSYuval Mintz if (b_lock) 2430a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2440a7fb11cSYuval Mintz } else { 2450a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2460a7fb11cSYuval Mintz } 2470a7fb11cSYuval Mintz 2480a7fb11cSYuval Mintz return p_ret; 2490a7fb11cSYuval Mintz } 2500a7fb11cSYuval Mintz 2510a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2520a7fb11cSYuval Mintz u8 connection_handle) 2530a7fb11cSYuval Mintz { 2540a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2550a7fb11cSYuval Mintz } 2560a7fb11cSYuval Mintz 2570a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2580a7fb11cSYuval Mintz u8 connection_handle) 2590a7fb11cSYuval Mintz { 2600a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2610a7fb11cSYuval Mintz } 2620a7fb11cSYuval Mintz 2630a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2640a7fb11cSYuval Mintz *p_hwfn, 2650a7fb11cSYuval Mintz u8 connection_handle) 2660a7fb11cSYuval Mintz { 2670a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2680a7fb11cSYuval Mintz } 2690a7fb11cSYuval Mintz 2700a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 2710a7fb11cSYuval Mintz { 2720a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 2730a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 2740a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 2750a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 2766291c608SMichal Kalderon unsigned long flags = 0; 277abd49676SRam Amrani dma_addr_t tx_frag; 2780a7fb11cSYuval Mintz 2790a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 2800a7fb11cSYuval Mintz if (!p_ll2_conn) 2810a7fb11cSYuval Mintz return; 2820a7fb11cSYuval Mintz 2830a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 2840a7fb11cSYuval Mintz 2856291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 2860a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 2870a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 2880a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 2890a7fb11cSYuval Mintz if (!p_pkt) 2900a7fb11cSYuval Mintz break; 2910a7fb11cSYuval Mintz 2920a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 2930a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 2940a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 2956291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 296526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 2971d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 2981d6cff4fSYuval Mintz 2991d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3001d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3011d6cff4fSYuval Mintz p_buffer); 3021d6cff4fSYuval Mintz } else { 3030a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3040a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3051d6cff4fSYuval Mintz b_last_frag = 3061d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 307abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3080518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 309abd49676SRam Amrani p_ll2_conn->my_id, 310abd49676SRam Amrani p_pkt->cookie, 311abd49676SRam Amrani tx_frag, 312abd49676SRam Amrani b_last_frag, 313abd49676SRam Amrani b_last_packet); 3141d6cff4fSYuval Mintz } 3156291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3160a7fb11cSYuval Mintz } 3176291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 3180a7fb11cSYuval Mintz } 3190a7fb11cSYuval Mintz 3200a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3210a7fb11cSYuval Mintz { 3220a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3230a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3240a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3250a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3260a7fb11cSYuval Mintz bool b_last_frag = false; 3270a7fb11cSYuval Mintz unsigned long flags; 3280a7fb11cSYuval Mintz int rc = -EINVAL; 3290a7fb11cSYuval Mintz 3300a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3310a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3320a7fb11cSYuval Mintz rc = -EBUSY; 3330a7fb11cSYuval Mintz goto out; 3340a7fb11cSYuval Mintz } 3350a7fb11cSYuval Mintz 3360a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3370a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3380a7fb11cSYuval Mintz while (num_bds) { 3390a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3400a7fb11cSYuval Mintz goto out; 3410a7fb11cSYuval Mintz 3420a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3430a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3440a7fb11cSYuval Mintz if (!p_pkt) 3450a7fb11cSYuval Mintz goto out; 3460a7fb11cSYuval Mintz 3470a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3480a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3490a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3500a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3510a7fb11cSYuval Mintz 3520a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3530a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3540a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3550a7fb11cSYuval Mintz goto out; 3560a7fb11cSYuval Mintz } 3570a7fb11cSYuval Mintz 3580a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3590a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3600a7fb11cSYuval Mintz while (num_bds_in_packet--) 3610a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3620a7fb11cSYuval Mintz 3630a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3640a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3650a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3660a7fb11cSYuval Mintz 3670a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3680518c12fSMichal Kalderon 3690518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 370abd49676SRam Amrani p_ll2_conn->my_id, 371abd49676SRam Amrani p_pkt->cookie, 3720518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 373abd49676SRam Amrani b_last_frag, !num_bds); 3740518c12fSMichal Kalderon 3750a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3760a7fb11cSYuval Mintz } 3770a7fb11cSYuval Mintz 3780a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 3790a7fb11cSYuval Mintz rc = 0; 3800a7fb11cSYuval Mintz out: 3810a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3820a7fb11cSYuval Mintz return rc; 3830a7fb11cSYuval Mintz } 3840a7fb11cSYuval Mintz 3850518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 386abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 3870518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 388abd49676SRam Amrani { 3890518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 3900518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 3910518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 3920518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 3930518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 3940518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 395da090917STomer Tayar data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id); 396da090917STomer Tayar 397da090917STomer Tayar data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp); 398abd49676SRam Amrani } 399abd49676SRam Amrani 40068be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 40168be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 40268be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 40368be910cSMintz, Yuval { 40468be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 4051e99c497SMichal Kalderon data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); 40668be910cSMintz, Yuval data->length.packet_length = 40768be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 40868be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 40968be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 41068be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 41168be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 41268be910cSMintz, Yuval } 41368be910cSMintz, Yuval 41468be910cSMintz, Yuval static int 4156f34a284SMichal Kalderon qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, 4166f34a284SMichal Kalderon struct qed_ll2_info *p_ll2_conn, 4176f34a284SMichal Kalderon union core_rx_cqe_union *p_cqe, 4186f34a284SMichal Kalderon unsigned long *p_lock_flags) 4196f34a284SMichal Kalderon { 4206f34a284SMichal Kalderon struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4216f34a284SMichal Kalderon struct core_rx_slow_path_cqe *sp_cqe; 4226f34a284SMichal Kalderon 4236f34a284SMichal Kalderon sp_cqe = &p_cqe->rx_cqe_sp; 4246f34a284SMichal Kalderon if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { 4256f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4266f34a284SMichal Kalderon "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", 4276f34a284SMichal Kalderon sp_cqe->ramrod_cmd_id); 4286f34a284SMichal Kalderon return -EINVAL; 4296f34a284SMichal Kalderon } 4306f34a284SMichal Kalderon 4316f34a284SMichal Kalderon if (!p_ll2_conn->cbs.slowpath_cb) { 4326f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4336f34a284SMichal Kalderon "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); 4346f34a284SMichal Kalderon return -EINVAL; 4356f34a284SMichal Kalderon } 4366f34a284SMichal Kalderon 4376f34a284SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4386f34a284SMichal Kalderon 4396f34a284SMichal Kalderon p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, 4406f34a284SMichal Kalderon p_ll2_conn->my_id, 4416f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[0]), 4426f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[1])); 4436f34a284SMichal Kalderon 4446f34a284SMichal Kalderon spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4456f34a284SMichal Kalderon 4466f34a284SMichal Kalderon return 0; 4476f34a284SMichal Kalderon } 4486f34a284SMichal Kalderon 4496f34a284SMichal Kalderon static int 45068be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4510a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4520a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 45368be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4540a7fb11cSYuval Mintz { 4550a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4560a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 45768be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4580a7fb11cSYuval Mintz 4590a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4600a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4610a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4620a7fb11cSYuval Mintz if (!p_pkt) { 4630a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 46468be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 46513c54771SMintz, Yuval p_ll2_conn->input.conn_type); 46668be910cSMintz, Yuval 4670a7fb11cSYuval Mintz return -EIO; 4680a7fb11cSYuval Mintz } 4690a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4700a7fb11cSYuval Mintz 4710518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 47268be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 4730518c12fSMichal Kalderon else 4740518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 4750a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 4760a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4770a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 47868be910cSMintz, Yuval 4790a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 4800a7fb11cSYuval Mintz 48168be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 48268be910cSMintz, Yuval data.cookie = p_pkt->cookie; 48368be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 48468be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 48568be910cSMintz, Yuval 4861df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4870518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 4880518c12fSMichal Kalderon 4891df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4900a7fb11cSYuval Mintz 4910a7fb11cSYuval Mintz return 0; 4920a7fb11cSYuval Mintz } 4930a7fb11cSYuval Mintz 4940a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 4950a7fb11cSYuval Mintz { 49613c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 4970a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4980a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 4990a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5000a7fb11cSYuval Mintz unsigned long flags = 0; 5010a7fb11cSYuval Mintz int rc = 0; 5020a7fb11cSYuval Mintz 5030a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 5040a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5050a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5060a7fb11cSYuval Mintz 5070a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5080a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5090a7fb11cSYuval Mintz 51013c54771SMintz, Yuval cqe = 51113c54771SMintz, Yuval (union core_rx_cqe_union *) 51213c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 5130a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5140a7fb11cSYuval Mintz 5150a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5160a7fb11cSYuval Mintz QED_MSG_LL2, 5170a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5180a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5190a7fb11cSYuval Mintz 5200a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5210a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5226f34a284SMichal Kalderon rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, 5236f34a284SMichal Kalderon cqe, &flags); 5240a7fb11cSYuval Mintz break; 525abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5260a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 52768be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5281df2adedSRam Amrani cqe, &flags, 5291df2adedSRam Amrani b_last_cqe); 5300a7fb11cSYuval Mintz break; 5310a7fb11cSYuval Mintz default: 5320a7fb11cSYuval Mintz rc = -EIO; 5330a7fb11cSYuval Mintz } 5340a7fb11cSYuval Mintz } 5350a7fb11cSYuval Mintz 5360a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5370a7fb11cSYuval Mintz return rc; 5380a7fb11cSYuval Mintz } 5390a7fb11cSYuval Mintz 5408c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5410a7fb11cSYuval Mintz { 5420a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5430a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5440a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5456291c608SMichal Kalderon unsigned long flags = 0; 5460a7fb11cSYuval Mintz 5470a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5480a7fb11cSYuval Mintz if (!p_ll2_conn) 5490a7fb11cSYuval Mintz return; 5500a7fb11cSYuval Mintz 5510a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5520a7fb11cSYuval Mintz 5536291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5540a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5550a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5560a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5570a7fb11cSYuval Mintz if (!p_pkt) 5580a7fb11cSYuval Mintz break; 559b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5606291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5610a7fb11cSYuval Mintz 562526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 5631d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5641d6cff4fSYuval Mintz 5651d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5661d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5671d6cff4fSYuval Mintz p_buffer); 5681d6cff4fSYuval Mintz } else { 56954f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 57054f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 57154f19f07SMintz, Yuval bool b_last; 5720a7fb11cSYuval Mintz 5730a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 57454f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 57554f19f07SMintz, Yuval p_ll2_conn->my_id, 57654f19f07SMintz, Yuval cookie, 57754f19f07SMintz, Yuval rx_buf_addr, b_last); 5780a7fb11cSYuval Mintz } 5796291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5800a7fb11cSYuval Mintz } 5816291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5821d6cff4fSYuval Mintz } 5831d6cff4fSYuval Mintz 584974f6c04SMichal Kalderon static bool 585974f6c04SMichal Kalderon qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn, 586974f6c04SMichal Kalderon struct core_rx_slow_path_cqe *p_cqe) 587974f6c04SMichal Kalderon { 588974f6c04SMichal Kalderon struct ooo_opaque *iscsi_ooo; 589974f6c04SMichal Kalderon u32 cid; 590974f6c04SMichal Kalderon 591974f6c04SMichal Kalderon if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) 592974f6c04SMichal Kalderon return false; 593974f6c04SMichal Kalderon 594974f6c04SMichal Kalderon iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data; 595974f6c04SMichal Kalderon if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES) 596974f6c04SMichal Kalderon return false; 597974f6c04SMichal Kalderon 598974f6c04SMichal Kalderon /* Need to make a flush */ 599974f6c04SMichal Kalderon cid = le32_to_cpu(iscsi_ooo->cid); 600974f6c04SMichal Kalderon qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid); 601974f6c04SMichal Kalderon 602974f6c04SMichal Kalderon return true; 603974f6c04SMichal Kalderon } 604974f6c04SMichal Kalderon 6051d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6061d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6071d6cff4fSYuval Mintz { 6081d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6091d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6101d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6111d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6121d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6131d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6141d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6151d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 6161d6cff4fSYuval Mintz u8 placement_offset = 0; 6171d6cff4fSYuval Mintz u8 cqe_type; 6181d6cff4fSYuval Mintz 6191d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6201d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6211d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6221d6cff4fSYuval Mintz return 0; 6231d6cff4fSYuval Mintz 6241d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6251d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6261d6cff4fSYuval Mintz 6271d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6281d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6291d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6301d6cff4fSYuval Mintz 631974f6c04SMichal Kalderon if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH) 632974f6c04SMichal Kalderon if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn, 633974f6c04SMichal Kalderon &cqe->rx_cqe_sp)) 634974f6c04SMichal Kalderon continue; 635974f6c04SMichal Kalderon 6361d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 6371d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6381d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6391d6cff4fSYuval Mintz cqe_type); 6401d6cff4fSYuval Mintz return -EINVAL; 6411d6cff4fSYuval Mintz } 6421d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6431d6cff4fSYuval Mintz 6441d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6451d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6461d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6471d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6481d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6491d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6501d6cff4fSYuval Mintz iscsi_ooo); 6511d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6521d6cff4fSYuval Mintz 6531d6cff4fSYuval Mintz /* Process delete isle first */ 6541d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6551d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6561d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6571d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6581d6cff4fSYuval Mintz 6591d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6601d6cff4fSYuval Mintz continue; 6611d6cff4fSYuval Mintz 6621d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6631d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6641d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6651d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6661d6cff4fSYuval Mintz ); 6671d6cff4fSYuval Mintz return -EIO; 6681d6cff4fSYuval Mintz } 6691d6cff4fSYuval Mintz 6701d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6711d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6721d6cff4fSYuval Mintz 6731d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 6741d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 6751d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 6761d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 6771d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 6781d6cff4fSYuval Mintz if (!p_pkt) { 6791d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6801d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 6811d6cff4fSYuval Mintz return -EIO; 6821d6cff4fSYuval Mintz } 6831d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 6841d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 6851d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 6861d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 6871d6cff4fSYuval Mintz p_buffer->vlan = vlan; 6881d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 6891d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 6901d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 6911d6cff4fSYuval Mintz 6921d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 6931d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 6941d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 6951d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6961d6cff4fSYuval Mintz cid, 6971d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6981d6cff4fSYuval Mintz p_buffer); 6991d6cff4fSYuval Mintz break; 7001d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 7011d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7021d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7031d6cff4fSYuval Mintz cid, 7041d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7051d6cff4fSYuval Mintz p_buffer, 7061d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 7071d6cff4fSYuval Mintz break; 7081d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 7091d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7101d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7111d6cff4fSYuval Mintz cid, 7121d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7131d6cff4fSYuval Mintz p_buffer, 7141d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7151d6cff4fSYuval Mintz break; 7161d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7171d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7181d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7191d6cff4fSYuval Mintz cid, 7201d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 7211d6cff4fSYuval Mintz 1, 7221d6cff4fSYuval Mintz p_buffer, 7231d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7241d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7251d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7261d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 7271d6cff4fSYuval Mintz break; 7281d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7291d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7301d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7311d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7321d6cff4fSYuval Mintz p_buffer, true); 7331d6cff4fSYuval Mintz break; 7341d6cff4fSYuval Mintz } 7351d6cff4fSYuval Mintz } else { 7361d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7371d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 7381d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 7391d6cff4fSYuval Mintz } 7401d6cff4fSYuval Mintz } 7411d6cff4fSYuval Mintz 7421d6cff4fSYuval Mintz return 0; 7431d6cff4fSYuval Mintz } 7441d6cff4fSYuval Mintz 7451d6cff4fSYuval Mintz static void 7461d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7471d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7481d6cff4fSYuval Mintz { 7497c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7501d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7511d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7521d6cff4fSYuval Mintz dma_addr_t first_frag; 7531d6cff4fSYuval Mintz u8 bd_flags; 7547c7973b2SMintz, Yuval int rc; 7551d6cff4fSYuval Mintz 7561d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7571d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7581d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7591d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7601d6cff4fSYuval Mintz bd_flags = 0; 7611d6cff4fSYuval Mintz 7621d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7631d6cff4fSYuval Mintz p_buffer->placement_offset; 764be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 765be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 7661d6cff4fSYuval Mintz 7677c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 7687c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 7697c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 7707c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 7717c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 7728fa74e3cSNathan Chancellor switch (p_ll2_conn->tx_dest) { 7738fa74e3cSNathan Chancellor case CORE_TX_DEST_NW: 7748fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_NW; 7758fa74e3cSNathan Chancellor break; 7768fa74e3cSNathan Chancellor case CORE_TX_DEST_LB: 7778fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 7788fa74e3cSNathan Chancellor break; 7798fa74e3cSNathan Chancellor case CORE_TX_DEST_DROP: 7808fa74e3cSNathan Chancellor default: 7818fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 7828fa74e3cSNathan Chancellor break; 7838fa74e3cSNathan Chancellor } 7847c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 7857c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 7867c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 7877c7973b2SMintz, Yuval 7887c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 7897c7973b2SMintz, Yuval &tx_pkt, true); 7901d6cff4fSYuval Mintz if (rc) { 7911d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 7921d6cff4fSYuval Mintz p_buffer, false); 7931d6cff4fSYuval Mintz break; 7941d6cff4fSYuval Mintz } 7951d6cff4fSYuval Mintz } 7961d6cff4fSYuval Mintz } 7971d6cff4fSYuval Mintz 7981d6cff4fSYuval Mintz static void 7991d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 8001d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 8011d6cff4fSYuval Mintz { 8021d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8031d6cff4fSYuval Mintz int rc; 8041d6cff4fSYuval Mintz 8051d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 8061d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 8071d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 8081d6cff4fSYuval Mintz p_ll2_conn->my_id, 8091d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 8101d6cff4fSYuval Mintz 0, p_buffer, true); 8111d6cff4fSYuval Mintz if (rc) { 8121d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8131d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8141d6cff4fSYuval Mintz break; 8151d6cff4fSYuval Mintz } 8161d6cff4fSYuval Mintz } 8171d6cff4fSYuval Mintz } 8181d6cff4fSYuval Mintz 8191d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8201d6cff4fSYuval Mintz { 8211d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8221d6cff4fSYuval Mintz int rc; 8231d6cff4fSYuval Mintz 824fc16f56bSMichal Kalderon if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 825fc16f56bSMichal Kalderon return 0; 826fc16f56bSMichal Kalderon 8271d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8281d6cff4fSYuval Mintz if (rc) 8291d6cff4fSYuval Mintz return rc; 8301d6cff4fSYuval Mintz 8311d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8321d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8331d6cff4fSYuval Mintz 8341d6cff4fSYuval Mintz return 0; 8351d6cff4fSYuval Mintz } 8361d6cff4fSYuval Mintz 8371d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8381d6cff4fSYuval Mintz { 8391d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8401d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8411d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8421d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8431d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8441d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8451d6cff4fSYuval Mintz int rc; 8461d6cff4fSYuval Mintz 847fc16f56bSMichal Kalderon if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 848fc16f56bSMichal Kalderon return 0; 849fc16f56bSMichal Kalderon 8501d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8511d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8521d6cff4fSYuval Mintz 8531d6cff4fSYuval Mintz if (!num_bds) 8541d6cff4fSYuval Mintz return 0; 8551d6cff4fSYuval Mintz 8561d6cff4fSYuval Mintz while (num_bds) { 8571d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 8581d6cff4fSYuval Mintz return -EINVAL; 8591d6cff4fSYuval Mintz 8601d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8611d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8621d6cff4fSYuval Mintz if (!p_pkt) 8631d6cff4fSYuval Mintz return -EINVAL; 8641d6cff4fSYuval Mintz 8651d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8661d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8671d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8681d6cff4fSYuval Mintz p_pkt->bd_used); 8691d6cff4fSYuval Mintz return -EINVAL; 8701d6cff4fSYuval Mintz } 8711d6cff4fSYuval Mintz 8721d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 8731d6cff4fSYuval Mintz 8741d6cff4fSYuval Mintz num_bds--; 8751d6cff4fSYuval Mintz p_tx->bds_idx++; 8761d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 8771d6cff4fSYuval Mintz 8781d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 8791d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 8801d6cff4fSYuval Mintz 8811d6cff4fSYuval Mintz if (b_dont_submit_rx) { 8821d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 8831d6cff4fSYuval Mintz p_buffer); 8841d6cff4fSYuval Mintz continue; 8851d6cff4fSYuval Mintz } 8861d6cff4fSYuval Mintz 8871d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 8881d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 8891d6cff4fSYuval Mintz p_buffer, true); 8901d6cff4fSYuval Mintz if (rc != 0) { 8911d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8921d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8931d6cff4fSYuval Mintz b_dont_submit_rx = true; 8941d6cff4fSYuval Mintz } 8951d6cff4fSYuval Mintz } 8961d6cff4fSYuval Mintz 8971d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8981d6cff4fSYuval Mintz 8991d6cff4fSYuval Mintz return 0; 9001d6cff4fSYuval Mintz } 9011d6cff4fSYuval Mintz 9027e50769cSMichal Kalderon static void qed_ll2_stop_ooo(struct qed_hwfn *p_hwfn) 9031d6cff4fSYuval Mintz { 9047e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9051d6cff4fSYuval Mintz 9067e50769cSMichal Kalderon DP_VERBOSE(p_hwfn, (QED_MSG_STORAGE | QED_MSG_LL2), 9077e50769cSMichal Kalderon "Stopping LL2 OOO queue [%02x]\n", *handle); 9081d6cff4fSYuval Mintz 9097e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, *handle); 9107e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 9111d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9121d6cff4fSYuval Mintz } 9131d6cff4fSYuval Mintz 9140a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 9150a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 9160a7fb11cSYuval Mintz u8 action_on_error) 9170a7fb11cSYuval Mintz { 91813c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9190a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 9200a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 9210a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9220a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9230a7fb11cSYuval Mintz u16 cqe_pbl_size; 9240a7fb11cSYuval Mintz int rc = 0; 9250a7fb11cSYuval Mintz 9260a7fb11cSYuval Mintz /* Get SPQ entry */ 9270a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9280a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9290a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9300a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9310a7fb11cSYuval Mintz 9320a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9330a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 9340a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9350a7fb11cSYuval Mintz if (rc) 9360a7fb11cSYuval Mintz return rc; 9370a7fb11cSYuval Mintz 9380a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 939997af5dfSMichal Kalderon memset(p_ramrod, 0, sizeof(*p_ramrod)); 9400a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9410a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 9420a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 9430a7fb11cSYuval Mintz 94413c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 94513c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 9460a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 9470a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 9480a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 9490a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 9500a7fb11cSYuval Mintz 95113c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 952da090917STomer Tayar p_ramrod->inner_vlan_stripping_en = 953da090917STomer Tayar p_ll2_conn->input.rx_vlan_removal_en; 954cac6f691SSudarsana Reddy Kalluru 955cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 956cac6f691SSudarsana Reddy Kalluru p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) 957cac6f691SSudarsana Reddy Kalluru p_ramrod->report_outer_vlan = 1; 9580a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 959ed468ebeSMichal Kalderon p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; 9600a7fb11cSYuval Mintz 9610bc5fe85SSudarsana Reddy Kalluru if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) && 9620bc5fe85SSudarsana Reddy Kalluru p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE && 9630bc5fe85SSudarsana Reddy Kalluru conn_type != QED_LL2_TYPE_IWARP) { 9640a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 9650a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 9660a7fb11cSYuval Mintz } else { 9670a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 9680a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 9690a7fb11cSYuval Mintz } 9700a7fb11cSYuval Mintz 9710a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 97213c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 973997af5dfSMichal Kalderon p_ramrod->zero_prod_flg = 1; 974997af5dfSMichal Kalderon 9750a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 9760a7fb11cSYuval Mintz } 9770a7fb11cSYuval Mintz 9780a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 9790a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9800a7fb11cSYuval Mintz { 98113c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9820a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 9830a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 9840a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9850a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9860a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 9870a7fb11cSYuval Mintz int rc = -EINVAL; 9880a7fb11cSYuval Mintz 9890a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 9900a7fb11cSYuval Mintz return 0; 9910a7fb11cSYuval Mintz 992526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 9931d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 9941d6cff4fSYuval Mintz else 9951d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 9961d6cff4fSYuval Mintz 9970a7fb11cSYuval Mintz /* Get SPQ entry */ 9980a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9990a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10000a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10010a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10020a7fb11cSYuval Mintz 10030a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10040a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 10050a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10060a7fb11cSYuval Mintz if (rc) 10070a7fb11cSYuval Mintz return rc; 10080a7fb11cSYuval Mintz 10090a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 10100a7fb11cSYuval Mintz 10110a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10120a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 101313c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 10140a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 10150a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 10160a7fb11cSYuval Mintz 10170a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 10180a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 10190a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 10200a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 10210a7fb11cSYuval Mintz 102213c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 1023526d1d05SKalderon, Michal case PURE_LB_TC: 1024b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 1025b5a9ee7cSAriel Elior break; 1026526d1d05SKalderon, Michal case PKT_LB_TC: 1027b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 1028827d240aSColin Ian King break; 1029b5a9ee7cSAriel Elior default: 1030b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 1031b5a9ee7cSAriel Elior break; 1032b5a9ee7cSAriel Elior } 1033b5a9ee7cSAriel Elior 10340a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 10350a7fb11cSYuval Mintz 10360a7fb11cSYuval Mintz switch (conn_type) { 10371e128c81SArun Easi case QED_LL2_TYPE_FCOE: 10381e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 10391e128c81SArun Easi break; 10400a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI: 10410a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ISCSI; 10420a7fb11cSYuval Mintz break; 10430a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 10440a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 10450a7fb11cSYuval Mintz break; 1046cc4ad324SKalderon, Michal case QED_LL2_TYPE_IWARP: 1047cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1048cc4ad324SKalderon, Michal break; 1049cc4ad324SKalderon, Michal case QED_LL2_TYPE_OOO: 1050cc4ad324SKalderon, Michal if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) 1051cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_ISCSI; 1052cc4ad324SKalderon, Michal else 1053cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1054cc4ad324SKalderon, Michal break; 10550a7fb11cSYuval Mintz default: 10560a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 10570a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 10580a7fb11cSYuval Mintz } 10590a7fb11cSYuval Mintz 106013c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 106113c54771SMintz, Yuval 1062b78d5400SAriel Elior rc = qed_spq_post(p_hwfn, p_ent, NULL); 1063b78d5400SAriel Elior if (rc) 1064b78d5400SAriel Elior return rc; 1065b78d5400SAriel Elior 1066b78d5400SAriel Elior rc = qed_db_recovery_add(p_hwfn->cdev, p_tx->doorbell_addr, 1067b78d5400SAriel Elior &p_tx->db_msg, DB_REC_WIDTH_32B, 1068b78d5400SAriel Elior DB_REC_KERNEL); 1069b78d5400SAriel Elior return rc; 10700a7fb11cSYuval Mintz } 10710a7fb11cSYuval Mintz 10720a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 10730a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10740a7fb11cSYuval Mintz { 10750a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 10760a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10770a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10780a7fb11cSYuval Mintz int rc = -EINVAL; 10790a7fb11cSYuval Mintz 10800a7fb11cSYuval Mintz /* Get SPQ entry */ 10810a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10820a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10830a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10840a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10850a7fb11cSYuval Mintz 10860a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10870a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 10880a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10890a7fb11cSYuval Mintz if (rc) 10900a7fb11cSYuval Mintz return rc; 10910a7fb11cSYuval Mintz 10920a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 10930a7fb11cSYuval Mintz 10940a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 10950a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 10960a7fb11cSYuval Mintz 10970a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10980a7fb11cSYuval Mintz } 10990a7fb11cSYuval Mintz 11000a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11010a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11020a7fb11cSYuval Mintz { 1103b78d5400SAriel Elior struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 11040a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11050a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11060a7fb11cSYuval Mintz int rc = -EINVAL; 1107b78d5400SAriel Elior qed_db_recovery_del(p_hwfn->cdev, p_tx->doorbell_addr, &p_tx->db_msg); 11080a7fb11cSYuval Mintz 11090a7fb11cSYuval Mintz /* Get SPQ entry */ 11100a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11110a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11120a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11130a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11140a7fb11cSYuval Mintz 11150a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11160a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11170a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11180a7fb11cSYuval Mintz if (rc) 11190a7fb11cSYuval Mintz return rc; 11200a7fb11cSYuval Mintz 11210a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11220a7fb11cSYuval Mintz } 11230a7fb11cSYuval Mintz 11240a7fb11cSYuval Mintz static int 11250a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 112613c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11270a7fb11cSYuval Mintz { 1128b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1129b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1130b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1131b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.rx_num_desc, 1132b6db3f71SAlexander Lobakin }; 1133b6db3f71SAlexander Lobakin struct qed_dev *cdev = p_hwfn->cdev; 11340a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 11350a7fb11cSYuval Mintz u32 capacity; 11360a7fb11cSYuval Mintz int rc = 0; 11370a7fb11cSYuval Mintz 113813c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 11390a7fb11cSYuval Mintz goto out; 11400a7fb11cSYuval Mintz 1141b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_NEXT_PTR; 1142b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_bd); 1143b6db3f71SAlexander Lobakin 1144b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rxq_chain, ¶ms); 11450a7fb11cSYuval Mintz if (rc) { 11460a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 11470a7fb11cSYuval Mintz goto out; 11480a7fb11cSYuval Mintz } 11490a7fb11cSYuval Mintz 11500a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 11510a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 11520a7fb11cSYuval Mintz GFP_KERNEL); 11530a7fb11cSYuval Mintz if (!p_descq) { 11540a7fb11cSYuval Mintz rc = -ENOMEM; 11550a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 11560a7fb11cSYuval Mintz goto out; 11570a7fb11cSYuval Mintz } 11580a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 11590a7fb11cSYuval Mintz 1160b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_PBL; 1161b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_fast_path_cqe); 1162b6db3f71SAlexander Lobakin 1163b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rcq_chain, ¶ms); 11640a7fb11cSYuval Mintz if (rc) { 11650a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 11660a7fb11cSYuval Mintz goto out; 11670a7fb11cSYuval Mintz } 11680a7fb11cSYuval Mintz 11690a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 11700a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 117113c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 11720a7fb11cSYuval Mintz 11730a7fb11cSYuval Mintz out: 11740a7fb11cSYuval Mintz return rc; 11750a7fb11cSYuval Mintz } 11760a7fb11cSYuval Mintz 11770a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 117813c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11790a7fb11cSYuval Mintz { 1180b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1181b6db3f71SAlexander Lobakin .mode = QED_CHAIN_MODE_PBL, 1182b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1183b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1184b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.tx_num_desc, 1185b6db3f71SAlexander Lobakin .elem_size = sizeof(struct core_tx_bd), 1186b6db3f71SAlexander Lobakin }; 11870a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 1188f5823fe6SMichal Kalderon u32 desc_size; 11890a7fb11cSYuval Mintz u32 capacity; 11900a7fb11cSYuval Mintz int rc = 0; 11910a7fb11cSYuval Mintz 119213c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 11930a7fb11cSYuval Mintz goto out; 11940a7fb11cSYuval Mintz 1195b6db3f71SAlexander Lobakin rc = qed_chain_alloc(p_hwfn->cdev, &p_ll2_info->tx_queue.txq_chain, 1196b6db3f71SAlexander Lobakin ¶ms); 11970a7fb11cSYuval Mintz if (rc) 11980a7fb11cSYuval Mintz goto out; 11990a7fb11cSYuval Mintz 12000a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 1201f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1202f5823fe6SMichal Kalderon desc_size = (sizeof(*p_descq) + 1203f5823fe6SMichal Kalderon (p_ll2_info->input.tx_max_bds_per_packet - 1) * 1204f5823fe6SMichal Kalderon sizeof(p_descq->bds_set)); 1205f5823fe6SMichal Kalderon 1206f5823fe6SMichal Kalderon p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); 12070a7fb11cSYuval Mintz if (!p_descq) { 12080a7fb11cSYuval Mintz rc = -ENOMEM; 12090a7fb11cSYuval Mintz goto out; 12100a7fb11cSYuval Mintz } 1211f5823fe6SMichal Kalderon p_ll2_info->tx_queue.descq_mem = p_descq; 12120a7fb11cSYuval Mintz 12130a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12140a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 121513c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 12160a7fb11cSYuval Mintz 12170a7fb11cSYuval Mintz out: 12180a7fb11cSYuval Mintz if (rc) 12190a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12200a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 122113c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 12220a7fb11cSYuval Mintz return rc; 12230a7fb11cSYuval Mintz } 12240a7fb11cSYuval Mintz 122513c54771SMintz, Yuval static int 122613c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 122713c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 122813c54771SMintz, Yuval { 122913c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 123013c54771SMintz, Yuval void *p_virt; 123113c54771SMintz, Yuval u16 buf_idx; 123213c54771SMintz, Yuval int rc = 0; 123313c54771SMintz, Yuval 1234526d1d05SKalderon, Michal if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO) 123513c54771SMintz, Yuval return rc; 123613c54771SMintz, Yuval 123713c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 123813c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 123913c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 124013c54771SMintz, Yuval 124113c54771SMintz, Yuval if (!num_desc) 124213c54771SMintz, Yuval return -EINVAL; 124313c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 124413c54771SMintz, Yuval } 124513c54771SMintz, Yuval 124613c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 124713c54771SMintz, Yuval buf_idx++) { 124813c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 124913c54771SMintz, Yuval if (!p_buf) { 125013c54771SMintz, Yuval rc = -ENOMEM; 125113c54771SMintz, Yuval goto out; 125213c54771SMintz, Yuval } 125313c54771SMintz, Yuval 125413c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 125513c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 125613c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 125713c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 125813c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 125913c54771SMintz, Yuval p_buf->rx_buffer_size, 126013c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 126113c54771SMintz, Yuval GFP_KERNEL); 126213c54771SMintz, Yuval if (!p_virt) { 126313c54771SMintz, Yuval kfree(p_buf); 126413c54771SMintz, Yuval rc = -ENOMEM; 126513c54771SMintz, Yuval goto out; 126613c54771SMintz, Yuval } 126713c54771SMintz, Yuval 126813c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 126913c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 127013c54771SMintz, Yuval } 127113c54771SMintz, Yuval 127213c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 127313c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 127413c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 127513c54771SMintz, Yuval 127613c54771SMintz, Yuval out: 127713c54771SMintz, Yuval return rc; 127813c54771SMintz, Yuval } 127913c54771SMintz, Yuval 12800518c12fSMichal Kalderon static int 12810518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 12820518c12fSMichal Kalderon { 12830518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 12840518c12fSMichal Kalderon !cbs->rx_release_cb || 12850518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 12860518c12fSMichal Kalderon return -EINVAL; 12870518c12fSMichal Kalderon 12880518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 12890518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 12900518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 12910518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 12926f34a284SMichal Kalderon p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; 12930518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 12940518c12fSMichal Kalderon 12950518c12fSMichal Kalderon return 0; 12960518c12fSMichal Kalderon } 12970518c12fSMichal Kalderon 1298997af5dfSMichal Kalderon static void _qed_ll2_calc_allowed_conns(struct qed_hwfn *p_hwfn, 1299997af5dfSMichal Kalderon struct qed_ll2_acquire_data *data, 1300997af5dfSMichal Kalderon u8 *start_idx, u8 *last_idx) 1301997af5dfSMichal Kalderon { 1302997af5dfSMichal Kalderon /* LL2 queues handles will be split as follows: 1303997af5dfSMichal Kalderon * First will be the legacy queues, and then the ctx based. 1304997af5dfSMichal Kalderon */ 1305997af5dfSMichal Kalderon if (data->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1306997af5dfSMichal Kalderon *start_idx = QED_LL2_LEGACY_CONN_BASE_PF; 1307997af5dfSMichal Kalderon *last_idx = *start_idx + 1308997af5dfSMichal Kalderon QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF; 1309997af5dfSMichal Kalderon } else { 1310997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX */ 1311997af5dfSMichal Kalderon *start_idx = QED_LL2_CTX_CONN_BASE_PF; 1312997af5dfSMichal Kalderon *last_idx = *start_idx + 1313997af5dfSMichal Kalderon QED_MAX_NUM_OF_CTX_LL2_CONNS_PF; 1314997af5dfSMichal Kalderon } 1315997af5dfSMichal Kalderon } 1316997af5dfSMichal Kalderon 131713c54771SMintz, Yuval static enum core_error_handle 131813c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 131913c54771SMintz, Yuval { 132013c54771SMintz, Yuval switch (err) { 132113c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 132213c54771SMintz, Yuval return LL2_DROP_PACKET; 132313c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 132413c54771SMintz, Yuval return LL2_DO_NOTHING; 132513c54771SMintz, Yuval case QED_LL2_ASSERT: 132613c54771SMintz, Yuval return LL2_ASSERT; 132713c54771SMintz, Yuval default: 132813c54771SMintz, Yuval return LL2_DO_NOTHING; 132913c54771SMintz, Yuval } 133013c54771SMintz, Yuval } 133113c54771SMintz, Yuval 13320518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 13330a7fb11cSYuval Mintz { 13340518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13350a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13360a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 1337997af5dfSMichal Kalderon u8 i, first_idx, last_idx, *p_tx_max; 13380a7fb11cSYuval Mintz int rc; 13390a7fb11cSYuval Mintz 134013c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 13410a7fb11cSYuval Mintz return -EINVAL; 13420a7fb11cSYuval Mintz 1343997af5dfSMichal Kalderon _qed_ll2_calc_allowed_conns(p_hwfn, data, &first_idx, &last_idx); 1344997af5dfSMichal Kalderon 13450a7fb11cSYuval Mintz /* Find a free connection to be used */ 1346997af5dfSMichal Kalderon for (i = first_idx; i < last_idx; i++) { 13470a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13480a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13490a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13500a7fb11cSYuval Mintz continue; 13510a7fb11cSYuval Mintz } 13520a7fb11cSYuval Mintz 13530a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13540a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13550a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13560a7fb11cSYuval Mintz break; 13570a7fb11cSYuval Mintz } 13580a7fb11cSYuval Mintz if (!p_ll2_info) 13590a7fb11cSYuval Mintz return -EBUSY; 13600a7fb11cSYuval Mintz 136113c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 13620a7fb11cSYuval Mintz 1363da090917STomer Tayar switch (data->input.tx_dest) { 1364da090917STomer Tayar case QED_LL2_TX_DEST_NW: 1365da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_NW; 1366da090917STomer Tayar break; 1367da090917STomer Tayar case QED_LL2_TX_DEST_LB: 1368da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_LB; 1369da090917STomer Tayar break; 1370da090917STomer Tayar case QED_LL2_TX_DEST_DROP: 1371da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_DROP; 1372da090917STomer Tayar break; 1373da090917STomer Tayar default: 1374da090917STomer Tayar return -EINVAL; 1375da090917STomer Tayar } 1376da090917STomer Tayar 1377ed468ebeSMichal Kalderon if (data->input.conn_type == QED_LL2_TYPE_OOO || 1378ed468ebeSMichal Kalderon data->input.secondary_queue) 1379ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = false; 1380ed468ebeSMichal Kalderon else 1381ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = true; 138213c54771SMintz, Yuval 138313c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 138413c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 138513c54771SMintz, Yuval if (*p_tx_max == 0) 138613c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 138713c54771SMintz, Yuval else 138813c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 138913c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 13900518c12fSMichal Kalderon 13910518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 13920518c12fSMichal Kalderon if (rc) { 13930518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 13940518c12fSMichal Kalderon goto q_allocate_fail; 13950518c12fSMichal Kalderon } 13960518c12fSMichal Kalderon 139713c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 13980a7fb11cSYuval Mintz if (rc) 13990a7fb11cSYuval Mintz goto q_allocate_fail; 14000a7fb11cSYuval Mintz 140113c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 14020a7fb11cSYuval Mintz if (rc) 14030a7fb11cSYuval Mintz goto q_allocate_fail; 14040a7fb11cSYuval Mintz 14051d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 140613c54771SMintz, Yuval data->input.mtu); 14071d6cff4fSYuval Mintz if (rc) 14081d6cff4fSYuval Mintz goto q_allocate_fail; 14091d6cff4fSYuval Mintz 14100a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 1411526d1d05SKalderon, Michal if (data->input.conn_type == QED_LL2_TYPE_OOO) { 14121d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 14131d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 14141d6cff4fSYuval Mintz } else { 14150a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 14160a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 14171d6cff4fSYuval Mintz } 14180a7fb11cSYuval Mintz 141913c54771SMintz, Yuval if (data->input.rx_num_desc) { 14200a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 14210a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14220a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 14230a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 14246a42b512SColin Ian King p_ll2_info->rx_queue.b_cb_registered = true; 14250a7fb11cSYuval Mintz } 14260a7fb11cSYuval Mintz 142713c54771SMintz, Yuval if (data->input.tx_num_desc) { 14280a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 14290a7fb11cSYuval Mintz comp_tx_cb, 14300a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14310a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 14320a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 14336a42b512SColin Ian King p_ll2_info->tx_queue.b_cb_registered = true; 14340a7fb11cSYuval Mintz } 14350a7fb11cSYuval Mintz 143613c54771SMintz, Yuval *data->p_connection_handle = i; 14370a7fb11cSYuval Mintz return rc; 14380a7fb11cSYuval Mintz 14390a7fb11cSYuval Mintz q_allocate_fail: 14400a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 14410a7fb11cSYuval Mintz return -ENOMEM; 14420a7fb11cSYuval Mintz } 14430a7fb11cSYuval Mintz 14440a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 14450a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 14460a7fb11cSYuval Mintz { 144713c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 144813c54771SMintz, Yuval enum core_error_handle error_mode; 14490a7fb11cSYuval Mintz u8 action_on_error = 0; 1450997af5dfSMichal Kalderon int rc; 14510a7fb11cSYuval Mintz 14520a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 14530a7fb11cSYuval Mintz return 0; 14540a7fb11cSYuval Mintz 14550a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 145613c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 145713c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 14580a7fb11cSYuval Mintz SET_FIELD(action_on_error, 145913c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 146013c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 146113c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 146213c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 14630a7fb11cSYuval Mintz 1464997af5dfSMichal Kalderon rc = qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 1465997af5dfSMichal Kalderon if (rc) 1466997af5dfSMichal Kalderon return rc; 1467997af5dfSMichal Kalderon 1468997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) { 1469997af5dfSMichal Kalderon rc = qed_db_recovery_add(p_hwfn->cdev, 1470997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 1471997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data, 1472997af5dfSMichal Kalderon DB_REC_WIDTH_64B, DB_REC_KERNEL); 1473997af5dfSMichal Kalderon } 1474997af5dfSMichal Kalderon 1475997af5dfSMichal Kalderon return rc; 14760a7fb11cSYuval Mintz } 14770a7fb11cSYuval Mintz 147858de2898SMintz, Yuval static void 147958de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 148058de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 148158de2898SMintz, Yuval { 1482526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 148358de2898SMintz, Yuval return; 148458de2898SMintz, Yuval 148558de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 148658de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 148758de2898SMintz, Yuval } 14880518c12fSMichal Kalderon 1489997af5dfSMichal Kalderon static inline u8 qed_ll2_handle_to_queue_id(struct qed_hwfn *p_hwfn, 1490997af5dfSMichal Kalderon u8 handle, 1491997af5dfSMichal Kalderon u8 ll2_queue_type) 1492997af5dfSMichal Kalderon { 1493997af5dfSMichal Kalderon u8 qid; 1494997af5dfSMichal Kalderon 1495997af5dfSMichal Kalderon if (ll2_queue_type == QED_LL2_RX_TYPE_LEGACY) 1496997af5dfSMichal Kalderon return p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + handle; 1497997af5dfSMichal Kalderon 1498997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX 1499997af5dfSMichal Kalderon * FW distinguishes between the legacy queues (ram based) and the 1500997af5dfSMichal Kalderon * ctx based queues by the queue_id. 1501997af5dfSMichal Kalderon * The first MAX_NUM_LL2_RX_RAM_QUEUES queues are legacy 1502997af5dfSMichal Kalderon * and the queue ids above that are ctx base. 1503997af5dfSMichal Kalderon */ 1504997af5dfSMichal Kalderon qid = p_hwfn->hw_info.resc_start[QED_LL2_CTX_QUEUE] + 1505997af5dfSMichal Kalderon MAX_NUM_LL2_RX_RAM_QUEUES; 1506997af5dfSMichal Kalderon 1507997af5dfSMichal Kalderon /* See comment on the acquire connection for how the ll2 1508997af5dfSMichal Kalderon * queues handles are divided. 1509997af5dfSMichal Kalderon */ 1510997af5dfSMichal Kalderon qid += (handle - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF); 1511997af5dfSMichal Kalderon 1512997af5dfSMichal Kalderon return qid; 1513997af5dfSMichal Kalderon } 1514997af5dfSMichal Kalderon 15150518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 15160a7fb11cSYuval Mintz { 1517997af5dfSMichal Kalderon struct e4_core_conn_context *p_cxt; 1518f5823fe6SMichal Kalderon struct qed_ll2_tx_packet *p_pkt; 1519997af5dfSMichal Kalderon struct qed_ll2_info *p_ll2_conn; 1520997af5dfSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 15210a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 15220a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 1523997af5dfSMichal Kalderon struct qed_cxt_info cxt_info; 152415582962SRahul Verma struct qed_ptt *p_ptt; 15250a7fb11cSYuval Mintz int rc = -EINVAL; 15260a7fb11cSYuval Mintz u32 i, capacity; 1527f5823fe6SMichal Kalderon u32 desc_size; 15280a7fb11cSYuval Mintz u8 qid; 15290a7fb11cSYuval Mintz 153015582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 153115582962SRahul Verma if (!p_ptt) 153215582962SRahul Verma return -EAGAIN; 153315582962SRahul Verma 15340a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 153515582962SRahul Verma if (!p_ll2_conn) { 153615582962SRahul Verma rc = -EINVAL; 153715582962SRahul Verma goto out; 153815582962SRahul Verma } 153915582962SRahul Verma 15400a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 15410a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 15420a7fb11cSYuval Mintz 15430a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 15440a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 15450a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 15460a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 15470a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 15480a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 15490a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 15500a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 15510a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 15520a7fb11cSYuval Mintz &p_rx->free_descq); 15530a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 15540a7fb11cSYuval Mintz 15550a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 15560a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 15570a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 15580a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 15590a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 15600a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 1561f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1562f5823fe6SMichal Kalderon desc_size = (sizeof(*p_pkt) + 1563f5823fe6SMichal Kalderon (p_ll2_conn->input.tx_max_bds_per_packet - 1) * 1564f5823fe6SMichal Kalderon sizeof(p_pkt->bds_set)); 1565f5823fe6SMichal Kalderon 1566f5823fe6SMichal Kalderon for (i = 0; i < capacity; i++) { 1567f5823fe6SMichal Kalderon p_pkt = p_tx->descq_mem + desc_size * i; 1568f5823fe6SMichal Kalderon list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 1569f5823fe6SMichal Kalderon } 15700a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 15710a7fb11cSYuval Mintz p_tx->bds_idx = 0; 15720a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 15730a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 15740a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15750a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 15760a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 15770a7fb11cSYuval Mintz 157815582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 157915582962SRahul Verma if (rc) 158015582962SRahul Verma goto out; 1581997af5dfSMichal Kalderon cxt_info.iid = p_ll2_conn->cid; 1582997af5dfSMichal Kalderon rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info); 1583997af5dfSMichal Kalderon if (rc) { 1584997af5dfSMichal Kalderon DP_NOTICE(p_hwfn, "Cannot find context info for cid=%d\n", 1585997af5dfSMichal Kalderon p_ll2_conn->cid); 1586997af5dfSMichal Kalderon goto out; 1587997af5dfSMichal Kalderon } 15880a7fb11cSYuval Mintz 1589997af5dfSMichal Kalderon p_cxt = cxt_info.p_cxt; 1590997af5dfSMichal Kalderon 1591997af5dfSMichal Kalderon memset(p_cxt, 0, sizeof(*p_cxt)); 1592997af5dfSMichal Kalderon 1593997af5dfSMichal Kalderon qid = qed_ll2_handle_to_queue_id(p_hwfn, connection_handle, 1594997af5dfSMichal Kalderon p_ll2_conn->input.rx_conn_type); 15950a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 15960a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 1597997af5dfSMichal Kalderon 1598997af5dfSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_LL2, 1599997af5dfSMichal Kalderon "Establishing ll2 queue. PF %d ctx_based=%d abs qid=%d\n", 1600997af5dfSMichal Kalderon p_hwfn->rel_pf_id, p_ll2_conn->input.rx_conn_type, qid); 1601997af5dfSMichal Kalderon 1602997af5dfSMichal Kalderon if (p_ll2_conn->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1603997af5dfSMichal Kalderon p_rx->set_prod_addr = p_hwfn->regview + 1604997af5dfSMichal Kalderon GTT_BAR0_MAP_REG_TSDM_RAM + TSTORM_LL2_RX_PRODS_OFFSET(qid); 1605997af5dfSMichal Kalderon } else { 1606997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX - using doorbell */ 1607997af5dfSMichal Kalderon p_rx->ctx_based = 1; 1608997af5dfSMichal Kalderon 1609997af5dfSMichal Kalderon p_rx->set_prod_addr = p_hwfn->doorbells + 1610997af5dfSMichal Kalderon p_hwfn->dpi_start_offset + 1611997af5dfSMichal Kalderon DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_LL2_PROD_UPDATE); 1612997af5dfSMichal Kalderon 1613997af5dfSMichal Kalderon /* prepare db data */ 1614997af5dfSMichal Kalderon p_rx->db_data.icid = cpu_to_le16((u16)p_ll2_conn->cid); 1615997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1616997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_AGG_CMD, DB_AGG_CMD_SET); 1617997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1618997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_RESERVED1, 0); 1619997af5dfSMichal Kalderon } 1620997af5dfSMichal Kalderon 16210a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 16220a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 16230a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 1624b78d5400SAriel Elior /* prepare db data */ 1625b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 1626b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 1627b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 1628b78d5400SAriel Elior DQ_XCM_CORE_TX_BD_PROD_CMD); 1629b78d5400SAriel Elior p_tx->db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 1630b78d5400SAriel Elior 16310a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 16320a7fb11cSYuval Mintz if (rc) 163315582962SRahul Verma goto out; 16340a7fb11cSYuval Mintz 16350a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 16360a7fb11cSYuval Mintz if (rc) 163715582962SRahul Verma goto out; 16380a7fb11cSYuval Mintz 1639c851a9dcSKalderon, Michal if (!QED_IS_RDMA_PERSONALITY(p_hwfn)) 164015582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 16410a7fb11cSYuval Mintz 16421d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 16431d6cff4fSYuval Mintz 164413c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1645cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 164679284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 164779284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 164879284adeSMichal Kalderon ETH_P_FCOE, 0); 164979284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 165079284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 165179284adeSMichal Kalderon ETH_P_FIP, 0); 16521e128c81SArun Easi } 16531e128c81SArun Easi 165415582962SRahul Verma out: 165515582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 16560a7fb11cSYuval Mintz return rc; 16570a7fb11cSYuval Mintz } 16580a7fb11cSYuval Mintz 16590a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 16600a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 16610a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 16620a7fb11cSYuval Mintz { 16630a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 1664997af5dfSMichal Kalderon struct core_ll2_rx_prod rx_prod = { 0, 0 }; 16650a7fb11cSYuval Mintz bool b_notify_fw = false; 16660a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 16670a7fb11cSYuval Mintz 16680a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 16690a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 16700a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 16710a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 16720a7fb11cSYuval Mintz list_entry); 1673b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 16740a7fb11cSYuval Mintz &p_rx->active_descq); 16750a7fb11cSYuval Mintz b_notify_fw = true; 16760a7fb11cSYuval Mintz } 16770a7fb11cSYuval Mintz 16780a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 16790a7fb11cSYuval Mintz if (p_curp) { 16800a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 16810a7fb11cSYuval Mintz b_notify_fw = true; 16820a7fb11cSYuval Mintz } 16830a7fb11cSYuval Mintz 16840a7fb11cSYuval Mintz if (!b_notify_fw) 16850a7fb11cSYuval Mintz return; 16860a7fb11cSYuval Mintz 16870a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 16880a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 1689997af5dfSMichal Kalderon if (p_rx->ctx_based) { 1690997af5dfSMichal Kalderon /* update producer by giving a doorbell */ 1691997af5dfSMichal Kalderon p_rx->db_data.prod.bd_prod = cpu_to_le16(bd_prod); 1692997af5dfSMichal Kalderon p_rx->db_data.prod.cqe_prod = cpu_to_le16(cq_prod); 1693997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1694997af5dfSMichal Kalderon * doorbell 1695997af5dfSMichal Kalderon */ 1696997af5dfSMichal Kalderon dma_wmb(); 1697997af5dfSMichal Kalderon DIRECT_REG_WR64(p_rx->set_prod_addr, 1698997af5dfSMichal Kalderon *((u64 *)&p_rx->db_data)); 1699997af5dfSMichal Kalderon } else { 17000a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 17010a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 170246721c3dSDenis Bolotin 1703997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1704997af5dfSMichal Kalderon * doorbell 1705997af5dfSMichal Kalderon */ 170646721c3dSDenis Bolotin dma_wmb(); 170746721c3dSDenis Bolotin 17080a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 17090a7fb11cSYuval Mintz } 1710997af5dfSMichal Kalderon } 17110a7fb11cSYuval Mintz 17120518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 17130a7fb11cSYuval Mintz u8 connection_handle, 17140a7fb11cSYuval Mintz dma_addr_t addr, 17150a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 17160a7fb11cSYuval Mintz { 17170518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 17180a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 17190a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 17200a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 17210a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 17220a7fb11cSYuval Mintz unsigned long flags; 17230a7fb11cSYuval Mintz void *p_data; 17240a7fb11cSYuval Mintz int rc = 0; 17250a7fb11cSYuval Mintz 17260a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17270a7fb11cSYuval Mintz if (!p_ll2_conn) 17280a7fb11cSYuval Mintz return -EINVAL; 17290a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 17300a7fb11cSYuval Mintz 17310a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 17320a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 17330a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 17340a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 17350a7fb11cSYuval Mintz if (p_curp) { 17360a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 17370a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 17380a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 17390a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 17400a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 17410a7fb11cSYuval Mintz } 17420a7fb11cSYuval Mintz } 17430a7fb11cSYuval Mintz 17440a7fb11cSYuval Mintz /* If we're lacking entires, let's try to flush buffers to FW */ 17450a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 17460a7fb11cSYuval Mintz rc = -EBUSY; 17470a7fb11cSYuval Mintz p_curp = NULL; 17480a7fb11cSYuval Mintz goto out_notify; 17490a7fb11cSYuval Mintz } 17500a7fb11cSYuval Mintz 17510a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 17520a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 17530a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 17540a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 17550a7fb11cSYuval Mintz p_curp->cookie = cookie; 17560a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 17570a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 17580a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 17590a7fb11cSYuval Mintz 17600a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 17610a7fb11cSYuval Mintz if (!notify_fw) { 17620a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 17630a7fb11cSYuval Mintz goto out; 17640a7fb11cSYuval Mintz } 17650a7fb11cSYuval Mintz 17660a7fb11cSYuval Mintz out_notify: 17670a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 17680a7fb11cSYuval Mintz out: 17690a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 17700a7fb11cSYuval Mintz return rc; 17710a7fb11cSYuval Mintz } 17720a7fb11cSYuval Mintz 17730a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 17740a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 17750a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 17767c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 17770a7fb11cSYuval Mintz u8 notify_fw) 17780a7fb11cSYuval Mintz { 17790a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 17807c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 17817c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 17820a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 17830a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 17840a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 17850a7fb11cSYuval Mintz 17867c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 17877c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 17880a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 17890a7fb11cSYuval Mintz } 17900a7fb11cSYuval Mintz 1791be086e7cSMintz, Yuval static void 1792be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 17930a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 17940a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 17957c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 17960a7fb11cSYuval Mintz { 17970a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 17980a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 17990a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 18007c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 18017c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1802be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 18035ab90341SAlexander Lobakin u16 bitfield1; 18040a7fb11cSYuval Mintz 18057c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 18067c7973b2SMintz, Yuval : CORE_RROCE; 18077c7973b2SMintz, Yuval 180877caa792SMichal Kalderon switch (pkt->tx_dest) { 180977caa792SMichal Kalderon case QED_LL2_TX_DEST_NW: 181077caa792SMichal Kalderon tx_dest = CORE_TX_DEST_NW; 181177caa792SMichal Kalderon break; 181277caa792SMichal Kalderon case QED_LL2_TX_DEST_LB: 181377caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 181477caa792SMichal Kalderon break; 181577caa792SMichal Kalderon case QED_LL2_TX_DEST_DROP: 181677caa792SMichal Kalderon tx_dest = CORE_TX_DEST_DROP; 181777caa792SMichal Kalderon break; 181877caa792SMichal Kalderon default: 181977caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 182077caa792SMichal Kalderon break; 182177caa792SMichal Kalderon } 18227c7973b2SMintz, Yuval 18230a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 182489d65113SMichal Kalderon if (QED_IS_IWARP_PERSONALITY(p_hwfn) && 1825cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_OOO) { 182689d65113SMichal Kalderon start_bd->nw_vlan_or_lb_echo = 182789d65113SMichal Kalderon cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); 1828cac6f691SSudarsana Reddy Kalluru } else { 18297c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 1830cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 1831cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_FCOE) 1832cac6f691SSudarsana Reddy Kalluru pkt->remove_stag = true; 1833cac6f691SSudarsana Reddy Kalluru } 1834cac6f691SSudarsana Reddy Kalluru 18355ab90341SAlexander Lobakin bitfield1 = le16_to_cpu(start_bd->bitfield1); 18365ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, pkt->l4_hdr_offset_w); 18375ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_TX_DST, tx_dest); 18385ab90341SAlexander Lobakin start_bd->bitfield1 = cpu_to_le16(bitfield1); 18395ab90341SAlexander Lobakin 18407c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1841be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 18427c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1843be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 18446df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); 18456df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); 18466df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); 1847cac6f691SSudarsana Reddy Kalluru SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION, 1848cac6f691SSudarsana Reddy Kalluru !!(pkt->remove_stag)); 1849cac6f691SSudarsana Reddy Kalluru 1850be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 18517c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 18527c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 18530a7fb11cSYuval Mintz 18540a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 18550a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 18560a7fb11cSYuval Mintz "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", 18570a7fb11cSYuval Mintz p_ll2->queue_id, 18580a7fb11cSYuval Mintz p_ll2->cid, 185913c54771SMintz, Yuval p_ll2->input.conn_type, 18600a7fb11cSYuval Mintz prod_idx, 18617c7973b2SMintz, Yuval pkt->first_frag_len, 18627c7973b2SMintz, Yuval pkt->num_of_bds, 18630a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 18640a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 18650a7fb11cSYuval Mintz 18667c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 18670a7fb11cSYuval Mintz return; 18680a7fb11cSYuval Mintz 18690a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 18700a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 18717c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 18720a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 18730a7fb11cSYuval Mintz 18740a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1875be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 18760a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 18770a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 18780a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 18790a7fb11cSYuval Mintz } 18800a7fb11cSYuval Mintz } 18810a7fb11cSYuval Mintz 18820a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 18830a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 18840a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 18850a7fb11cSYuval Mintz { 18860a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 18870a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 18880a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 18890a7fb11cSYuval Mintz u16 bd_prod; 18900a7fb11cSYuval Mintz 18910a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 18920a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 18930a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 18940a7fb11cSYuval Mintz return; 18950a7fb11cSYuval Mintz 18960a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 18970a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 18980a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 18990a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 19000a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 19010a7fb11cSYuval Mintz 19020a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 19030a7fb11cSYuval Mintz if (!b_notify) 19040a7fb11cSYuval Mintz return; 19050a7fb11cSYuval Mintz 19060a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 19070a7fb11cSYuval Mintz 19080a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 19090a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 19100a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 19110a7fb11cSYuval Mintz if (!p_pkt) 19120a7fb11cSYuval Mintz break; 19130a7fb11cSYuval Mintz 1914b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 19150a7fb11cSYuval Mintz } 19160a7fb11cSYuval Mintz 1917b78d5400SAriel Elior p_tx->db_msg.spq_prod = cpu_to_le16(bd_prod); 19180a7fb11cSYuval Mintz 19190a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 19200a7fb11cSYuval Mintz wmb(); 19210a7fb11cSYuval Mintz 1922b78d5400SAriel Elior DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&p_tx->db_msg)); 19230a7fb11cSYuval Mintz 19240a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 19250a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 19260a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 19270a7fb11cSYuval Mintz p_ll2_conn->queue_id, 192813c54771SMintz, Yuval p_ll2_conn->cid, 1929b78d5400SAriel Elior p_ll2_conn->input.conn_type, p_tx->db_msg.spq_prod); 19300a7fb11cSYuval Mintz } 19310a7fb11cSYuval Mintz 19320518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 19330a7fb11cSYuval Mintz u8 connection_handle, 19347c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 19357c7973b2SMintz, Yuval bool notify_fw) 19360a7fb11cSYuval Mintz { 19370518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19380a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 19390a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19400a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 19410a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 19420a7fb11cSYuval Mintz unsigned long flags; 19430a7fb11cSYuval Mintz int rc = 0; 19440a7fb11cSYuval Mintz 19450a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 19460a7fb11cSYuval Mintz if (!p_ll2_conn) 19470a7fb11cSYuval Mintz return -EINVAL; 19480a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 19490a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 19500a7fb11cSYuval Mintz 1951f5823fe6SMichal Kalderon if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet) 19520a7fb11cSYuval Mintz return -EIO; 19530a7fb11cSYuval Mintz 19540a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 19550a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 19560a7fb11cSYuval Mintz rc = -EEXIST; 19570a7fb11cSYuval Mintz goto out; 19580a7fb11cSYuval Mintz } 19590a7fb11cSYuval Mintz 19600a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 19610a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 19620a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 19630a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 19647c7973b2SMintz, Yuval if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds) 19650a7fb11cSYuval Mintz p_curp = NULL; 19660a7fb11cSYuval Mintz 19670a7fb11cSYuval Mintz if (!p_curp) { 19680a7fb11cSYuval Mintz rc = -EBUSY; 19690a7fb11cSYuval Mintz goto out; 19700a7fb11cSYuval Mintz } 19710a7fb11cSYuval Mintz 19720a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 19737c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 19747c7973b2SMintz, Yuval 19757c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 19760a7fb11cSYuval Mintz 19770a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 19780a7fb11cSYuval Mintz 19790a7fb11cSYuval Mintz out: 19800a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 19810a7fb11cSYuval Mintz return rc; 19820a7fb11cSYuval Mintz } 19830a7fb11cSYuval Mintz 19840518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 19850a7fb11cSYuval Mintz u8 connection_handle, 19860a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 19870a7fb11cSYuval Mintz { 19880a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 19890518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19900a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19910a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 19920a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 19930a7fb11cSYuval Mintz unsigned long flags; 19940a7fb11cSYuval Mintz 19950a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 19960a7fb11cSYuval Mintz if (!p_ll2_conn) 19970a7fb11cSYuval Mintz return -EINVAL; 19980a7fb11cSYuval Mintz 19990a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 20000a7fb11cSYuval Mintz return -EINVAL; 20010a7fb11cSYuval Mintz 20020a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 20030a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 20040a7fb11cSYuval Mintz 20050a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 20060a7fb11cSYuval Mintz return -EINVAL; 20070a7fb11cSYuval Mintz 20080a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 20090a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 20100a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 20110a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 20120a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 20130a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 20140a7fb11cSYuval Mintz 20150a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 20160a7fb11cSYuval Mintz 20170a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 20180a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 20190a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 20200a7fb11cSYuval Mintz 20210a7fb11cSYuval Mintz return 0; 20220a7fb11cSYuval Mintz } 20230a7fb11cSYuval Mintz 20240518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 20250a7fb11cSYuval Mintz { 20260518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20270a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20280a7fb11cSYuval Mintz int rc = -EINVAL; 202915582962SRahul Verma struct qed_ptt *p_ptt; 203015582962SRahul Verma 203115582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 203215582962SRahul Verma if (!p_ptt) 203315582962SRahul Verma return -EAGAIN; 20340a7fb11cSYuval Mintz 20350a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 203615582962SRahul Verma if (!p_ll2_conn) { 203715582962SRahul Verma rc = -EINVAL; 203815582962SRahul Verma goto out; 203915582962SRahul Verma } 20400a7fb11cSYuval Mintz 20410a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 20420a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 20436a42b512SColin Ian King p_ll2_conn->tx_queue.b_cb_registered = false; 2044fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 20450a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 20460a7fb11cSYuval Mintz if (rc) 204715582962SRahul Verma goto out; 2048fc16f56bSMichal Kalderon 20490a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 2050fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 20510a7fb11cSYuval Mintz } 20520a7fb11cSYuval Mintz 20530a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 20546a42b512SColin Ian King p_ll2_conn->rx_queue.b_cb_registered = false; 2055fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 2056997af5dfSMichal Kalderon 2057997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) 2058997af5dfSMichal Kalderon qed_db_recovery_del(p_hwfn->cdev, 2059997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 2060997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data); 2061997af5dfSMichal Kalderon 20620a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 20630a7fb11cSYuval Mintz if (rc) 206415582962SRahul Verma goto out; 2065fc16f56bSMichal Kalderon 20660a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 2067fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 20680a7fb11cSYuval Mintz } 20690a7fb11cSYuval Mintz 2070526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 20711d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 20721d6cff4fSYuval Mintz 207313c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 2074cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 207579284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 207679284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 207779284adeSMichal Kalderon ETH_P_FCOE, 0); 207879284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 207979284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 208079284adeSMichal Kalderon ETH_P_FIP, 0); 20811e128c81SArun Easi } 20821e128c81SArun Easi 208315582962SRahul Verma out: 208415582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 20850a7fb11cSYuval Mintz return rc; 20860a7fb11cSYuval Mintz } 20870a7fb11cSYuval Mintz 208858de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 208958de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 209058de2898SMintz, Yuval { 209158de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 209258de2898SMintz, Yuval 2093526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 209458de2898SMintz, Yuval return; 209558de2898SMintz, Yuval 209658de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 209758de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 209858de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 209958de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 210058de2898SMintz, Yuval p_buffer->rx_buffer_size, 210158de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 210258de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 210358de2898SMintz, Yuval kfree(p_buffer); 210458de2898SMintz, Yuval } 210558de2898SMintz, Yuval } 21060518c12fSMichal Kalderon 21070518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 21080a7fb11cSYuval Mintz { 21090518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21100a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 21110a7fb11cSYuval Mintz 21120a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 21130a7fb11cSYuval Mintz if (!p_ll2_conn) 21140a7fb11cSYuval Mintz return; 21150a7fb11cSYuval Mintz 2116f5823fe6SMichal Kalderon kfree(p_ll2_conn->tx_queue.descq_mem); 21170a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 21180a7fb11cSYuval Mintz 21190a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 21200a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 21210a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 21220a7fb11cSYuval Mintz 21230a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 21240a7fb11cSYuval Mintz 21251d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 21261d6cff4fSYuval Mintz 21270a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 21280a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 21290a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 21300a7fb11cSYuval Mintz } 21310a7fb11cSYuval Mintz 21323587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 21330a7fb11cSYuval Mintz { 21340a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 21350a7fb11cSYuval Mintz u8 i; 21360a7fb11cSYuval Mintz 21370a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 21380a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 21390a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 21400a7fb11cSYuval Mintz if (!p_ll2_connections) { 21410a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 21423587cb87STomer Tayar return -ENOMEM; 21430a7fb11cSYuval Mintz } 21440a7fb11cSYuval Mintz 21450a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 21460a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 21470a7fb11cSYuval Mintz 21483587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 21493587cb87STomer Tayar return 0; 21500a7fb11cSYuval Mintz } 21510a7fb11cSYuval Mintz 21523587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 21530a7fb11cSYuval Mintz { 21540a7fb11cSYuval Mintz int i; 21550a7fb11cSYuval Mintz 21560a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 21573587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 21580a7fb11cSYuval Mintz } 21590a7fb11cSYuval Mintz 21603587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 21610a7fb11cSYuval Mintz { 21623587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 21633587cb87STomer Tayar return; 21643587cb87STomer Tayar 21653587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 21663587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 21670a7fb11cSYuval Mintz } 21680a7fb11cSYuval Mintz 2169fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 2170fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 2171fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 2172fef1c3f7SMintz, Yuval { 2173fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 2174fef1c3f7SMintz, Yuval 2175fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 2176fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 2177fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 2178fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 2179fef1c3f7SMintz, Yuval sizeof(port_stats)); 2180fef1c3f7SMintz, Yuval 21817e50769cSMichal Kalderon p_stats->gsi_invalid_hdr += HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 21827e50769cSMichal Kalderon p_stats->gsi_invalid_pkt_length += 2183fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 21847e50769cSMichal Kalderon p_stats->gsi_unsupported_pkt_typ += 2185fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 21867e50769cSMichal Kalderon p_stats->gsi_crcchksm_error += 2187fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 2188fef1c3f7SMintz, Yuval } 2189fef1c3f7SMintz, Yuval 21900a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, 21910a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 21920a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 21930a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 21940a7fb11cSYuval Mintz { 21950a7fb11cSYuval Mintz struct core_ll2_tstorm_per_queue_stat tstats; 21960a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 21970a7fb11cSYuval Mintz u32 tstats_addr; 21980a7fb11cSYuval Mintz 21990a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 22000a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 22010a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 22020a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 22030a7fb11cSYuval Mintz 22047e50769cSMichal Kalderon p_stats->packet_too_big_discard += 22050a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 22067e50769cSMichal Kalderon p_stats->no_buff_discard += HILO_64_REGPAIR(tstats.no_buff_discard); 22070a7fb11cSYuval Mintz } 22080a7fb11cSYuval Mintz 22090a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 22100a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22110a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22120a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22130a7fb11cSYuval Mintz { 22140a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 22150a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 22160a7fb11cSYuval Mintz u32 ustats_addr; 22170a7fb11cSYuval Mintz 22180a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 22190a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 22200a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 22210a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 22220a7fb11cSYuval Mintz 22237e50769cSMichal Kalderon p_stats->rcv_ucast_bytes += HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 22247e50769cSMichal Kalderon p_stats->rcv_mcast_bytes += HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 22257e50769cSMichal Kalderon p_stats->rcv_bcast_bytes += HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 22267e50769cSMichal Kalderon p_stats->rcv_ucast_pkts += HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 22277e50769cSMichal Kalderon p_stats->rcv_mcast_pkts += HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 22287e50769cSMichal Kalderon p_stats->rcv_bcast_pkts += HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 22290a7fb11cSYuval Mintz } 22300a7fb11cSYuval Mintz 22310a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 22320a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22330a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22340a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22350a7fb11cSYuval Mintz { 22360a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 22370a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 22380a7fb11cSYuval Mintz u32 pstats_addr; 22390a7fb11cSYuval Mintz 22400a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 22410a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 22420a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 22430a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 22440a7fb11cSYuval Mintz 22457e50769cSMichal Kalderon p_stats->sent_ucast_bytes += HILO_64_REGPAIR(pstats.sent_ucast_bytes); 22467e50769cSMichal Kalderon p_stats->sent_mcast_bytes += HILO_64_REGPAIR(pstats.sent_mcast_bytes); 22477e50769cSMichal Kalderon p_stats->sent_bcast_bytes += HILO_64_REGPAIR(pstats.sent_bcast_bytes); 22487e50769cSMichal Kalderon p_stats->sent_ucast_pkts += HILO_64_REGPAIR(pstats.sent_ucast_pkts); 22497e50769cSMichal Kalderon p_stats->sent_mcast_pkts += HILO_64_REGPAIR(pstats.sent_mcast_pkts); 22507e50769cSMichal Kalderon p_stats->sent_bcast_pkts += HILO_64_REGPAIR(pstats.sent_bcast_pkts); 22510a7fb11cSYuval Mintz } 22520a7fb11cSYuval Mintz 2253443473d2SMichal Kalderon static int __qed_ll2_get_stats(void *cxt, u8 connection_handle, 2254443473d2SMichal Kalderon struct qed_ll2_stats *p_stats) 22550a7fb11cSYuval Mintz { 22560518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 22570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 22580a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 22590a7fb11cSYuval Mintz 22600a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 22610a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 22620a7fb11cSYuval Mintz return -EINVAL; 22630a7fb11cSYuval Mintz 22640a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 22650a7fb11cSYuval Mintz 22660a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 22670a7fb11cSYuval Mintz if (!p_ptt) { 22680a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 22690a7fb11cSYuval Mintz return -EINVAL; 22700a7fb11cSYuval Mintz } 22710a7fb11cSYuval Mintz 2272fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2273fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 22747e50769cSMichal Kalderon 22750a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 22767e50769cSMichal Kalderon 22770a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 22787e50769cSMichal Kalderon 22790a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 22800a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 22810a7fb11cSYuval Mintz 22820a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 22837e50769cSMichal Kalderon 22840a7fb11cSYuval Mintz return 0; 22850a7fb11cSYuval Mintz } 22860a7fb11cSYuval Mintz 22877e50769cSMichal Kalderon int qed_ll2_get_stats(void *cxt, 22887e50769cSMichal Kalderon u8 connection_handle, struct qed_ll2_stats *p_stats) 22897e50769cSMichal Kalderon { 22907e50769cSMichal Kalderon memset(p_stats, 0, sizeof(*p_stats)); 22917e50769cSMichal Kalderon return __qed_ll2_get_stats(cxt, connection_handle, p_stats); 22927e50769cSMichal Kalderon } 22937e50769cSMichal Kalderon 22940518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 22950518c12fSMichal Kalderon u8 connection_handle, 22960518c12fSMichal Kalderon void *cookie, 22970518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 22980518c12fSMichal Kalderon bool b_last_packet) 22990518c12fSMichal Kalderon { 23000518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 23010518c12fSMichal Kalderon 23020518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 23030518c12fSMichal Kalderon } 23040518c12fSMichal Kalderon 23050a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 23060a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 23070a7fb11cSYuval Mintz void *cookie) 23080a7fb11cSYuval Mintz { 23090a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 23100a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 23110a7fb11cSYuval Mintz } 23120a7fb11cSYuval Mintz 23138ffe2df6SZou Wei static struct qed_ll2_cbs ll2_cbs = { 23140518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 23150518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 23160518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 23170518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 23180518c12fSMichal Kalderon }; 23190518c12fSMichal Kalderon 23207e50769cSMichal Kalderon static void qed_ll2_set_conn_data(struct qed_hwfn *p_hwfn, 232113c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 232213c54771SMintz, Yuval struct qed_ll2_params *params, 232313c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 23240518c12fSMichal Kalderon u8 *handle, bool lb) 232513c54771SMintz, Yuval { 232613c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 232713c54771SMintz, Yuval 232813c54771SMintz, Yuval data->input.conn_type = conn_type; 232913c54771SMintz, Yuval data->input.mtu = params->mtu; 233013c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 233113c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 233213c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 233313c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 233413c54771SMintz, Yuval data->p_connection_handle = handle; 23350518c12fSMichal Kalderon data->cbs = &ll2_cbs; 23367e50769cSMichal Kalderon ll2_cbs.cookie = p_hwfn; 23370518c12fSMichal Kalderon 233813c54771SMintz, Yuval if (lb) { 2339526d1d05SKalderon, Michal data->input.tx_tc = PKT_LB_TC; 234013c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 234113c54771SMintz, Yuval } else { 234213c54771SMintz, Yuval data->input.tx_tc = 0; 234313c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 234413c54771SMintz, Yuval } 234513c54771SMintz, Yuval } 234613c54771SMintz, Yuval 23477e50769cSMichal Kalderon static int qed_ll2_start_ooo(struct qed_hwfn *p_hwfn, 234813c54771SMintz, Yuval struct qed_ll2_params *params) 234913c54771SMintz, Yuval { 23507e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 235113c54771SMintz, Yuval struct qed_ll2_acquire_data data; 235213c54771SMintz, Yuval int rc; 235313c54771SMintz, Yuval 23547e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, 2355526d1d05SKalderon, Michal QED_LL2_TYPE_OOO, handle, true); 235613c54771SMintz, Yuval 23577e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 235813c54771SMintz, Yuval if (rc) { 23597e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 OOO connection\n"); 236013c54771SMintz, Yuval goto out; 236113c54771SMintz, Yuval } 236213c54771SMintz, Yuval 23637e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, *handle); 236413c54771SMintz, Yuval if (rc) { 23657e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 OOO connection\n"); 236613c54771SMintz, Yuval goto fail; 236713c54771SMintz, Yuval } 236813c54771SMintz, Yuval 236913c54771SMintz, Yuval return 0; 237013c54771SMintz, Yuval 237113c54771SMintz, Yuval fail: 23727e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 237313c54771SMintz, Yuval out: 237413c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 237513c54771SMintz, Yuval return rc; 237613c54771SMintz, Yuval } 237713c54771SMintz, Yuval 23787e50769cSMichal Kalderon static bool qed_ll2_is_storage_eng1(struct qed_dev *cdev) 23797e50769cSMichal Kalderon { 23807e50769cSMichal Kalderon return (QED_IS_FCOE_PERSONALITY(QED_LEADING_HWFN(cdev)) || 23817e50769cSMichal Kalderon QED_IS_ISCSI_PERSONALITY(QED_LEADING_HWFN(cdev))) && 23827e50769cSMichal Kalderon (QED_AFFIN_HWFN(cdev) != QED_LEADING_HWFN(cdev)); 23837e50769cSMichal Kalderon } 23847e50769cSMichal Kalderon 23857e50769cSMichal Kalderon static int __qed_ll2_stop(struct qed_hwfn *p_hwfn) 23867e50769cSMichal Kalderon { 23877e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 23887e50769cSMichal Kalderon int rc; 23897e50769cSMichal Kalderon 23907e50769cSMichal Kalderon rc = qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 23917e50769cSMichal Kalderon if (rc) 23927e50769cSMichal Kalderon DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 23937e50769cSMichal Kalderon 23947e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 23957e50769cSMichal Kalderon 23967e50769cSMichal Kalderon return rc; 23977e50769cSMichal Kalderon } 23987e50769cSMichal Kalderon 23997e50769cSMichal Kalderon static int qed_ll2_stop(struct qed_dev *cdev) 24007e50769cSMichal Kalderon { 24017e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 24027e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 24037e50769cSMichal Kalderon int rc = 0, rc2 = 0; 24047e50769cSMichal Kalderon 24057e50769cSMichal Kalderon if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 24067e50769cSMichal Kalderon return 0; 24077e50769cSMichal Kalderon 24087e50769cSMichal Kalderon qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address); 24097e50769cSMichal Kalderon eth_zero_addr(cdev->ll2_mac_address); 24107e50769cSMichal Kalderon 24117e50769cSMichal Kalderon if (QED_IS_ISCSI_PERSONALITY(p_hwfn)) 24127e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 24137e50769cSMichal Kalderon 24147e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 24157e50769cSMichal Kalderon if (b_is_storage_eng1) { 24167e50769cSMichal Kalderon rc2 = __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 24177e50769cSMichal Kalderon if (rc2) 24187e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 24197e50769cSMichal Kalderon "Failed to stop LL2 on engine 0\n"); 24207e50769cSMichal Kalderon } 24217e50769cSMichal Kalderon 24227e50769cSMichal Kalderon rc = __qed_ll2_stop(p_hwfn); 24237e50769cSMichal Kalderon if (rc) 24247e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to stop LL2\n"); 24257e50769cSMichal Kalderon 24267e50769cSMichal Kalderon qed_ll2_kill_buffers(cdev); 24277e50769cSMichal Kalderon 24287e50769cSMichal Kalderon cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 24297e50769cSMichal Kalderon 24307e50769cSMichal Kalderon return rc | rc2; 24317e50769cSMichal Kalderon } 24327e50769cSMichal Kalderon 24337e50769cSMichal Kalderon static int __qed_ll2_start(struct qed_hwfn *p_hwfn, 24347e50769cSMichal Kalderon struct qed_ll2_params *params) 24350a7fb11cSYuval Mintz { 243688a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 24377e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 24380a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 243913c54771SMintz, Yuval struct qed_ll2_acquire_data data; 24407e50769cSMichal Kalderon int rc, rx_cnt; 24410518c12fSMichal Kalderon 24427e50769cSMichal Kalderon switch (p_hwfn->hw_info.personality) { 24431e128c81SArun Easi case QED_PCI_FCOE: 24441e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 24451e128c81SArun Easi break; 24460a7fb11cSYuval Mintz case QED_PCI_ISCSI: 24470a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ISCSI; 24480a7fb11cSYuval Mintz break; 24490a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 24500a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 24510a7fb11cSYuval Mintz break; 24520a7fb11cSYuval Mintz default: 24537e50769cSMichal Kalderon 24540a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 24550a7fb11cSYuval Mintz } 24560a7fb11cSYuval Mintz 24577e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, conn_type, 24580518c12fSMichal Kalderon &cdev->ll2->handle, false); 24590629a330SArnd Bergmann 24607e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 24610a7fb11cSYuval Mintz if (rc) { 24627e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 connection\n"); 24637e50769cSMichal Kalderon return rc; 24640a7fb11cSYuval Mintz } 24650a7fb11cSYuval Mintz 24667e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, cdev->ll2->handle); 24670a7fb11cSYuval Mintz if (rc) { 24687e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 connection\n"); 24697e50769cSMichal Kalderon goto release_conn; 24700a7fb11cSYuval Mintz } 24710a7fb11cSYuval Mintz 24720a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 24730a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 24747e50769cSMichal Kalderon rx_cnt = cdev->ll2->rx_cnt; 247588a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 24767e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, 24770a7fb11cSYuval Mintz cdev->ll2->handle, 24780a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 24790a7fb11cSYuval Mintz if (rc) { 24807e50769cSMichal Kalderon DP_INFO(p_hwfn, 24810a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 24820a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 24830a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 24840a7fb11cSYuval Mintz kfree(buffer->data); 24850a7fb11cSYuval Mintz list_del(&buffer->list); 24860a7fb11cSYuval Mintz kfree(buffer); 24870a7fb11cSYuval Mintz } else { 24887e50769cSMichal Kalderon rx_cnt++; 24890a7fb11cSYuval Mintz } 24900a7fb11cSYuval Mintz } 24910a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 24920a7fb11cSYuval Mintz 24937e50769cSMichal Kalderon if (rx_cnt == cdev->ll2->rx_cnt) { 24947e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed passing even a single Rx buffer\n"); 24957e50769cSMichal Kalderon goto terminate_conn; 24960a7fb11cSYuval Mintz } 24977e50769cSMichal Kalderon cdev->ll2->rx_cnt = rx_cnt; 24987e50769cSMichal Kalderon 24997e50769cSMichal Kalderon return 0; 25007e50769cSMichal Kalderon 25017e50769cSMichal Kalderon terminate_conn: 25027e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 25037e50769cSMichal Kalderon release_conn: 25047e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 25057e50769cSMichal Kalderon return rc; 25067e50769cSMichal Kalderon } 25077e50769cSMichal Kalderon 25087e50769cSMichal Kalderon static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 25097e50769cSMichal Kalderon { 25107e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 25117e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 25127e50769cSMichal Kalderon struct qed_ll2_buffer *buffer; 25137e50769cSMichal Kalderon int rx_num_desc, i, rc; 25140a7fb11cSYuval Mintz 25150a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 25167e50769cSMichal Kalderon DP_NOTICE(cdev, "Invalid Ethernet address\n"); 25177e50769cSMichal Kalderon return -EINVAL; 25180a7fb11cSYuval Mintz } 25190a7fb11cSYuval Mintz 25207e50769cSMichal Kalderon WARN_ON(!cdev->ll2->cbs); 25217e50769cSMichal Kalderon 25227e50769cSMichal Kalderon /* Initialize LL2 locks & lists */ 25237e50769cSMichal Kalderon INIT_LIST_HEAD(&cdev->ll2->list); 25247e50769cSMichal Kalderon spin_lock_init(&cdev->ll2->lock); 25257e50769cSMichal Kalderon 25267e50769cSMichal Kalderon cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 25277e50769cSMichal Kalderon L1_CACHE_BYTES + params->mtu; 25287e50769cSMichal Kalderon 25297e50769cSMichal Kalderon /* Allocate memory for LL2. 25307e50769cSMichal Kalderon * In CMT mode, in case of a storage PF which is affintized to engine 1, 25317e50769cSMichal Kalderon * LL2 is started also on engine 0 and thus we need twofold buffers. 25327e50769cSMichal Kalderon */ 25337e50769cSMichal Kalderon rx_num_desc = QED_LL2_RX_SIZE * (b_is_storage_eng1 ? 2 : 1); 25347e50769cSMichal Kalderon DP_INFO(cdev, "Allocating %d LL2 buffers of size %08x bytes\n", 25357e50769cSMichal Kalderon rx_num_desc, cdev->ll2->rx_size); 25367e50769cSMichal Kalderon for (i = 0; i < rx_num_desc; i++) { 25377e50769cSMichal Kalderon buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 25387e50769cSMichal Kalderon if (!buffer) { 25397e50769cSMichal Kalderon DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 25407e50769cSMichal Kalderon rc = -ENOMEM; 25417e50769cSMichal Kalderon goto err0; 25427e50769cSMichal Kalderon } 25437e50769cSMichal Kalderon 25447e50769cSMichal Kalderon rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 25457e50769cSMichal Kalderon &buffer->phys_addr); 25467e50769cSMichal Kalderon if (rc) { 25477e50769cSMichal Kalderon kfree(buffer); 25487e50769cSMichal Kalderon goto err0; 25497e50769cSMichal Kalderon } 25507e50769cSMichal Kalderon 25517e50769cSMichal Kalderon list_add_tail(&buffer->list, &cdev->ll2->list); 25527e50769cSMichal Kalderon } 25537e50769cSMichal Kalderon 25547e50769cSMichal Kalderon rc = __qed_ll2_start(p_hwfn, params); 25557e50769cSMichal Kalderon if (rc) { 25567e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start LL2\n"); 25577e50769cSMichal Kalderon goto err0; 25587e50769cSMichal Kalderon } 25597e50769cSMichal Kalderon 25607e50769cSMichal Kalderon /* In CMT mode, always need to start LL2 on engine 0 for a storage PF, 25617e50769cSMichal Kalderon * since broadcast/mutlicast packets are routed to engine 0. 25627e50769cSMichal Kalderon */ 25637e50769cSMichal Kalderon if (b_is_storage_eng1) { 25647e50769cSMichal Kalderon rc = __qed_ll2_start(QED_LEADING_HWFN(cdev), params); 25657e50769cSMichal Kalderon if (rc) { 25667e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 25677e50769cSMichal Kalderon "Failed to start LL2 on engine 0\n"); 25687e50769cSMichal Kalderon goto err1; 25697e50769cSMichal Kalderon } 25707e50769cSMichal Kalderon } 25717e50769cSMichal Kalderon 25727e50769cSMichal Kalderon if (QED_IS_ISCSI_PERSONALITY(p_hwfn)) { 25731d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 25747e50769cSMichal Kalderon rc = qed_ll2_start_ooo(p_hwfn, params); 25751d6cff4fSYuval Mintz if (rc) { 25767e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start OOO LL2\n"); 25777e50769cSMichal Kalderon goto err2; 25781d6cff4fSYuval Mintz } 25791d6cff4fSYuval Mintz } 25801d6cff4fSYuval Mintz 25817e50769cSMichal Kalderon rc = qed_llh_add_mac_filter(cdev, 0, params->ll2_mac_address); 25820a7fb11cSYuval Mintz if (rc) { 25837e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to add an LLH filter\n"); 25847e50769cSMichal Kalderon goto err3; 25850a7fb11cSYuval Mintz } 25860a7fb11cSYuval Mintz 25870a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 25887e50769cSMichal Kalderon 25890a7fb11cSYuval Mintz return 0; 25900a7fb11cSYuval Mintz 25917e50769cSMichal Kalderon err3: 25927e50769cSMichal Kalderon if (QED_IS_ISCSI_PERSONALITY(p_hwfn)) 25937e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 25947e50769cSMichal Kalderon err2: 25957e50769cSMichal Kalderon if (b_is_storage_eng1) 25967e50769cSMichal Kalderon __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 25977e50769cSMichal Kalderon err1: 25987e50769cSMichal Kalderon __qed_ll2_stop(p_hwfn); 25997e50769cSMichal Kalderon err0: 26000a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 26010a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 26020a7fb11cSYuval Mintz return rc; 26030a7fb11cSYuval Mintz } 26040a7fb11cSYuval Mintz 2605cac6f691SSudarsana Reddy Kalluru static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, 2606cac6f691SSudarsana Reddy Kalluru unsigned long xmit_flags) 26070a7fb11cSYuval Mintz { 26087e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 26097c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 26100a7fb11cSYuval Mintz const skb_frag_t *frag; 26117c81626aSManish Chopra u8 flags = 0, nr_frags; 26120a7fb11cSYuval Mintz int rc = -EINVAL, i; 26130a7fb11cSYuval Mintz dma_addr_t mapping; 26140a7fb11cSYuval Mintz u16 vlan = 0; 26150a7fb11cSYuval Mintz 26160a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 2617ff81de73SColin Ian King DP_INFO(cdev, "Cannot transmit a checksummed packet\n"); 26180a7fb11cSYuval Mintz return -EINVAL; 26190a7fb11cSYuval Mintz } 26200a7fb11cSYuval Mintz 26217c81626aSManish Chopra /* Cache number of fragments from SKB since SKB may be freed by 26227c81626aSManish Chopra * the completion routine after calling qed_ll2_prepare_tx_packet() 26237c81626aSManish Chopra */ 26247c81626aSManish Chopra nr_frags = skb_shinfo(skb)->nr_frags; 26257c81626aSManish Chopra 26267c81626aSManish Chopra if (1 + nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 26270a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 26287c81626aSManish Chopra 1 + nr_frags); 26290a7fb11cSYuval Mintz return -EINVAL; 26300a7fb11cSYuval Mintz } 26310a7fb11cSYuval Mintz 26320a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 26330a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 26340a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 26350a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 26360a7fb11cSYuval Mintz return -EINVAL; 26370a7fb11cSYuval Mintz } 26380a7fb11cSYuval Mintz 26390a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 26400a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 26410a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2642be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 26430a7fb11cSYuval Mintz 26440a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 26450a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2646be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 26470a7fb11cSYuval Mintz } 26480a7fb11cSYuval Mintz 26497c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 26507c81626aSManish Chopra pkt.num_of_bds = 1 + nr_frags; 26517c7973b2SMintz, Yuval pkt.vlan = vlan; 26527c7973b2SMintz, Yuval pkt.bd_flags = flags; 26537c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 26547c7973b2SMintz, Yuval pkt.first_frag = mapping; 26557c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 26567c7973b2SMintz, Yuval pkt.cookie = skb; 2657cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) && 2658cac6f691SSudarsana Reddy Kalluru test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags)) 2659cac6f691SSudarsana Reddy Kalluru pkt.remove_stag = true; 26607c7973b2SMintz, Yuval 26617c81626aSManish Chopra /* qed_ll2_prepare_tx_packet() may actually send the packet if 26627c81626aSManish Chopra * there are no fragments in the skb and subsequently the completion 26637c81626aSManish Chopra * routine may run and free the SKB, so no dereferencing the SKB 26647c81626aSManish Chopra * beyond this point unless skb has any fragments. 26657c81626aSManish Chopra */ 26667e50769cSMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, cdev->ll2->handle, 26677c7973b2SMintz, Yuval &pkt, 1); 26680a7fb11cSYuval Mintz if (rc) 26690a7fb11cSYuval Mintz goto err; 26700a7fb11cSYuval Mintz 26717c81626aSManish Chopra for (i = 0; i < nr_frags; i++) { 26720a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 26730a7fb11cSYuval Mintz 2674d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2675d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2676d2201a21SMintz, Yuval 2677d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 26780a7fb11cSYuval Mintz DP_NOTICE(cdev, 26790a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 2680f07d4276SDan Carpenter rc = -ENOMEM; 26810a7fb11cSYuval Mintz goto err; 26820a7fb11cSYuval Mintz } 26830a7fb11cSYuval Mintz 26847e50769cSMichal Kalderon rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 26850a7fb11cSYuval Mintz cdev->ll2->handle, 26860a7fb11cSYuval Mintz mapping, 26870a7fb11cSYuval Mintz skb_frag_size(frag)); 26880a7fb11cSYuval Mintz 26890a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 26907e50769cSMichal Kalderon * we can't free memory, will need to wait for completion 26910a7fb11cSYuval Mintz */ 26920a7fb11cSYuval Mintz if (rc) 26930a7fb11cSYuval Mintz goto err2; 26940a7fb11cSYuval Mintz } 26950a7fb11cSYuval Mintz 26960a7fb11cSYuval Mintz return 0; 26970a7fb11cSYuval Mintz 26980a7fb11cSYuval Mintz err: 26990a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 27000a7fb11cSYuval Mintz err2: 27010a7fb11cSYuval Mintz return rc; 27020a7fb11cSYuval Mintz } 27030a7fb11cSYuval Mintz 27040a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 27050a7fb11cSYuval Mintz { 27067e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 27077e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 27087e50769cSMichal Kalderon int rc; 27097e50769cSMichal Kalderon 27100a7fb11cSYuval Mintz if (!cdev->ll2) 27110a7fb11cSYuval Mintz return -EINVAL; 27120a7fb11cSYuval Mintz 27137e50769cSMichal Kalderon rc = qed_ll2_get_stats(p_hwfn, cdev->ll2->handle, stats); 27147e50769cSMichal Kalderon if (rc) { 27157e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to get LL2 stats\n"); 27167e50769cSMichal Kalderon return rc; 27177e50769cSMichal Kalderon } 27187e50769cSMichal Kalderon 27197e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 27207e50769cSMichal Kalderon if (b_is_storage_eng1) { 27217e50769cSMichal Kalderon rc = __qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 27220a7fb11cSYuval Mintz cdev->ll2->handle, stats); 27237e50769cSMichal Kalderon if (rc) { 27247e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 27257e50769cSMichal Kalderon "Failed to get LL2 stats on engine 0\n"); 27267e50769cSMichal Kalderon return rc; 27277e50769cSMichal Kalderon } 27287e50769cSMichal Kalderon } 27297e50769cSMichal Kalderon 27307e50769cSMichal Kalderon return 0; 27310a7fb11cSYuval Mintz } 27320a7fb11cSYuval Mintz 27330a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 27340a7fb11cSYuval Mintz .start = &qed_ll2_start, 27350a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 27360a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 27370a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 27380a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 27390a7fb11cSYuval Mintz }; 27400a7fb11cSYuval Mintz 27410a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 27420a7fb11cSYuval Mintz { 27430a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 27440a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 27450a7fb11cSYuval Mintz } 27460a7fb11cSYuval Mintz 27470a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 27480a7fb11cSYuval Mintz { 27490a7fb11cSYuval Mintz kfree(cdev->ll2); 27500a7fb11cSYuval Mintz cdev->ll2 = NULL; 27510a7fb11cSYuval Mintz } 2752