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" 31*ee824f4bSOmkar Kulkarni #include "qed_iro_hsi.h" 320a7fb11cSYuval Mintz #include "qed_hw.h" 330a7fb11cSYuval Mintz #include "qed_int.h" 340a7fb11cSYuval Mintz #include "qed_ll2.h" 350a7fb11cSYuval Mintz #include "qed_mcp.h" 361d6cff4fSYuval Mintz #include "qed_ooo.h" 370a7fb11cSYuval Mintz #include "qed_reg_addr.h" 380a7fb11cSYuval Mintz #include "qed_sp.h" 39b71b9afdSKalderon, Michal #include "qed_rdma.h" 400a7fb11cSYuval Mintz 416a42b512SColin Ian King #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered) 426a42b512SColin Ian King #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered) 430a7fb11cSYuval Mintz 440a7fb11cSYuval Mintz #define QED_LL2_TX_SIZE (256) 450a7fb11cSYuval Mintz #define QED_LL2_RX_SIZE (4096) 460a7fb11cSYuval Mintz 470a7fb11cSYuval Mintz struct qed_cb_ll2_info { 480a7fb11cSYuval Mintz int rx_cnt; 490a7fb11cSYuval Mintz u32 rx_size; 500a7fb11cSYuval Mintz u8 handle; 510a7fb11cSYuval Mintz 520a7fb11cSYuval Mintz /* Lock protecting LL2 buffer lists in sleepless context */ 530a7fb11cSYuval Mintz spinlock_t lock; 540a7fb11cSYuval Mintz struct list_head list; 550a7fb11cSYuval Mintz 560a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *cbs; 570a7fb11cSYuval Mintz void *cb_cookie; 580a7fb11cSYuval Mintz }; 590a7fb11cSYuval Mintz 600a7fb11cSYuval Mintz struct qed_ll2_buffer { 610a7fb11cSYuval Mintz struct list_head list; 620a7fb11cSYuval Mintz void *data; 630a7fb11cSYuval Mintz dma_addr_t phys_addr; 640a7fb11cSYuval Mintz }; 650a7fb11cSYuval Mintz 660518c12fSMichal Kalderon static void qed_ll2b_complete_tx_packet(void *cxt, 670a7fb11cSYuval Mintz u8 connection_handle, 680a7fb11cSYuval Mintz void *cookie, 690a7fb11cSYuval Mintz dma_addr_t first_frag_addr, 700a7fb11cSYuval Mintz bool b_last_fragment, 710a7fb11cSYuval Mintz bool b_last_packet) 720a7fb11cSYuval Mintz { 730518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 740a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 750a7fb11cSYuval Mintz struct sk_buff *skb = cookie; 760a7fb11cSYuval Mintz 770a7fb11cSYuval Mintz /* All we need to do is release the mapping */ 780a7fb11cSYuval Mintz dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, 790a7fb11cSYuval Mintz skb_headlen(skb), DMA_TO_DEVICE); 800a7fb11cSYuval Mintz 810a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) 820a7fb11cSYuval Mintz cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, 830a7fb11cSYuval Mintz b_last_fragment); 840a7fb11cSYuval Mintz 850a7fb11cSYuval Mintz dev_kfree_skb_any(skb); 860a7fb11cSYuval Mintz } 870a7fb11cSYuval Mintz 880a7fb11cSYuval Mintz static int qed_ll2_alloc_buffer(struct qed_dev *cdev, 890a7fb11cSYuval Mintz u8 **data, dma_addr_t *phys_addr) 900a7fb11cSYuval Mintz { 910a7fb11cSYuval Mintz *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); 920a7fb11cSYuval Mintz if (!(*data)) { 930a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); 940a7fb11cSYuval Mintz return -ENOMEM; 950a7fb11cSYuval Mintz } 960a7fb11cSYuval Mintz 970a7fb11cSYuval Mintz *phys_addr = dma_map_single(&cdev->pdev->dev, 980a7fb11cSYuval Mintz ((*data) + NET_SKB_PAD), 990a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1000a7fb11cSYuval Mintz if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { 1010a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to map LL2 buffer data\n"); 1020a7fb11cSYuval Mintz kfree((*data)); 1030a7fb11cSYuval Mintz return -ENOMEM; 1040a7fb11cSYuval Mintz } 1050a7fb11cSYuval Mintz 1060a7fb11cSYuval Mintz return 0; 1070a7fb11cSYuval Mintz } 1080a7fb11cSYuval Mintz 1090a7fb11cSYuval Mintz static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, 1100a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer) 1110a7fb11cSYuval Mintz { 1120a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 1130a7fb11cSYuval Mintz 1140a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 1150a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1160a7fb11cSYuval Mintz kfree(buffer->data); 1170a7fb11cSYuval Mintz list_del(&buffer->list); 1180a7fb11cSYuval Mintz 1190a7fb11cSYuval Mintz cdev->ll2->rx_cnt--; 1200a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) 1210a7fb11cSYuval Mintz DP_INFO(cdev, "All LL2 entries were removed\n"); 1220a7fb11cSYuval Mintz 1230a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 1240a7fb11cSYuval Mintz 1250a7fb11cSYuval Mintz return 0; 1260a7fb11cSYuval Mintz } 1270a7fb11cSYuval Mintz 1280a7fb11cSYuval Mintz static void qed_ll2_kill_buffers(struct qed_dev *cdev) 1290a7fb11cSYuval Mintz { 1300a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer, *tmp_buffer; 1310a7fb11cSYuval Mintz 1320a7fb11cSYuval Mintz list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) 1330a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 1340a7fb11cSYuval Mintz } 1350a7fb11cSYuval Mintz 136bf774d14SYueHaibing static void qed_ll2b_complete_rx_packet(void *cxt, 137bf774d14SYueHaibing struct qed_ll2_comp_rx_data *data) 1380a7fb11cSYuval Mintz { 1390518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 14068be910cSMintz, Yuval struct qed_ll2_buffer *buffer = data->cookie; 1410a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1420a7fb11cSYuval Mintz dma_addr_t new_phys_addr; 1430a7fb11cSYuval Mintz struct sk_buff *skb; 1440a7fb11cSYuval Mintz bool reuse = false; 1450a7fb11cSYuval Mintz int rc = -EINVAL; 1460a7fb11cSYuval Mintz u8 *new_data; 1470a7fb11cSYuval Mintz 1480a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 1490a7fb11cSYuval Mintz (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), 1500a7fb11cSYuval 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", 15168be910cSMintz, Yuval (u64)data->rx_buf_addr, 15268be910cSMintz, Yuval data->u.placement_offset, 15368be910cSMintz, Yuval data->length.packet_length, 15468be910cSMintz, Yuval data->parse_flags, 15568be910cSMintz, Yuval data->vlan, data->opaque_data_0, data->opaque_data_1); 1560a7fb11cSYuval Mintz 1570a7fb11cSYuval Mintz if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { 1580a7fb11cSYuval Mintz print_hex_dump(KERN_INFO, "", 1590a7fb11cSYuval Mintz DUMP_PREFIX_OFFSET, 16, 1, 16068be910cSMintz, Yuval buffer->data, data->length.packet_length, false); 1610a7fb11cSYuval Mintz } 1620a7fb11cSYuval Mintz 1630a7fb11cSYuval Mintz /* Determine if data is valid */ 16468be910cSMintz, Yuval if (data->length.packet_length < ETH_HLEN) 1650a7fb11cSYuval Mintz reuse = true; 1660a7fb11cSYuval Mintz 1670a7fb11cSYuval Mintz /* Allocate a replacement for buffer; Reuse upon failure */ 1680a7fb11cSYuval Mintz if (!reuse) 1690a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, 1700a7fb11cSYuval Mintz &new_phys_addr); 1710a7fb11cSYuval Mintz 1720a7fb11cSYuval Mintz /* If need to reuse or there's no replacement buffer, repost this */ 1730a7fb11cSYuval Mintz if (rc) 1740a7fb11cSYuval Mintz goto out_post; 175752ecb2dSMintz, Yuval dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 176752ecb2dSMintz, Yuval cdev->ll2->rx_size, DMA_FROM_DEVICE); 1770a7fb11cSYuval Mintz 1780a7fb11cSYuval Mintz skb = build_skb(buffer->data, 0); 1790a7fb11cSYuval Mintz if (!skb) { 1804f9de4dfSSudarsana Reddy Kalluru DP_INFO(cdev, "Failed to build SKB\n"); 1814f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 1824f9de4dfSSudarsana Reddy Kalluru goto out_post1; 1830a7fb11cSYuval Mintz } 1840a7fb11cSYuval Mintz 18568be910cSMintz, Yuval data->u.placement_offset += NET_SKB_PAD; 18668be910cSMintz, Yuval skb_reserve(skb, data->u.placement_offset); 18768be910cSMintz, Yuval skb_put(skb, data->length.packet_length); 1880a7fb11cSYuval Mintz skb_checksum_none_assert(skb); 1890a7fb11cSYuval Mintz 1900a7fb11cSYuval Mintz /* Get parital ethernet information instead of eth_type_trans(), 1910a7fb11cSYuval Mintz * Since we don't have an associated net_device. 1920a7fb11cSYuval Mintz */ 1930a7fb11cSYuval Mintz skb_reset_mac_header(skb); 1940a7fb11cSYuval Mintz skb->protocol = eth_hdr(skb)->h_proto; 1950a7fb11cSYuval Mintz 1960a7fb11cSYuval Mintz /* Pass SKB onward */ 1970a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { 19868be910cSMintz, Yuval if (data->vlan) 19968be910cSMintz, Yuval __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 20068be910cSMintz, Yuval data->vlan); 2010a7fb11cSYuval Mintz cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, 20268be910cSMintz, Yuval data->opaque_data_0, 20368be910cSMintz, Yuval data->opaque_data_1); 2044f9de4dfSSudarsana Reddy Kalluru } else { 2054f9de4dfSSudarsana Reddy Kalluru DP_VERBOSE(p_hwfn, (NETIF_MSG_RX_STATUS | NETIF_MSG_PKTDATA | 2064f9de4dfSSudarsana Reddy Kalluru QED_MSG_LL2 | QED_MSG_STORAGE), 2074f9de4dfSSudarsana Reddy Kalluru "Dropping the packet\n"); 2084f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 2090a7fb11cSYuval Mintz } 2100a7fb11cSYuval Mintz 2114f9de4dfSSudarsana Reddy Kalluru out_post1: 2120a7fb11cSYuval Mintz /* Update Buffer information and update FW producer */ 2130a7fb11cSYuval Mintz buffer->data = new_data; 2140a7fb11cSYuval Mintz buffer->phys_addr = new_phys_addr; 2150a7fb11cSYuval Mintz 2160a7fb11cSYuval Mintz out_post: 2177e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, cdev->ll2->handle, 2180a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2190a7fb11cSYuval Mintz if (rc) 2200a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 2210a7fb11cSYuval Mintz } 2220a7fb11cSYuval Mintz 2230a7fb11cSYuval Mintz static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2240a7fb11cSYuval Mintz u8 connection_handle, 2250a7fb11cSYuval Mintz bool b_lock, 2260a7fb11cSYuval Mintz bool b_only_active) 2270a7fb11cSYuval Mintz { 2280a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2290a7fb11cSYuval Mintz 2300a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2310a7fb11cSYuval Mintz return NULL; 2320a7fb11cSYuval Mintz 2330a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2340a7fb11cSYuval Mintz return NULL; 2350a7fb11cSYuval Mintz 2360a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2370a7fb11cSYuval Mintz 2380a7fb11cSYuval Mintz if (b_only_active) { 2390a7fb11cSYuval Mintz if (b_lock) 2400a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2410a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2420a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2430a7fb11cSYuval Mintz if (b_lock) 2440a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2450a7fb11cSYuval Mintz } else { 2460a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2470a7fb11cSYuval Mintz } 2480a7fb11cSYuval Mintz 2490a7fb11cSYuval Mintz return p_ret; 2500a7fb11cSYuval Mintz } 2510a7fb11cSYuval Mintz 2520a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2530a7fb11cSYuval Mintz u8 connection_handle) 2540a7fb11cSYuval Mintz { 2550a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2560a7fb11cSYuval Mintz } 2570a7fb11cSYuval Mintz 2580a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2590a7fb11cSYuval Mintz u8 connection_handle) 2600a7fb11cSYuval Mintz { 2610a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2620a7fb11cSYuval Mintz } 2630a7fb11cSYuval Mintz 2640a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2650a7fb11cSYuval Mintz *p_hwfn, 2660a7fb11cSYuval Mintz u8 connection_handle) 2670a7fb11cSYuval Mintz { 2680a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2690a7fb11cSYuval Mintz } 2700a7fb11cSYuval Mintz 2710a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 2720a7fb11cSYuval Mintz { 2730a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 2740a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 2750a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 2760a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 2776291c608SMichal Kalderon unsigned long flags = 0; 278abd49676SRam Amrani dma_addr_t tx_frag; 2790a7fb11cSYuval Mintz 2800a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 2810a7fb11cSYuval Mintz if (!p_ll2_conn) 2820a7fb11cSYuval Mintz return; 2830a7fb11cSYuval Mintz 2840a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 2850a7fb11cSYuval Mintz 2866291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 2870a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 2880a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 2890a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 2900a7fb11cSYuval Mintz if (!p_pkt) 2910a7fb11cSYuval Mintz break; 2920a7fb11cSYuval Mintz 2930a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 2940a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 2950a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 2966291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 297526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 2981d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 2991d6cff4fSYuval Mintz 3001d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3011d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3021d6cff4fSYuval Mintz p_buffer); 3031d6cff4fSYuval Mintz } else { 3040a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3050a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3061d6cff4fSYuval Mintz b_last_frag = 3071d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 308abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3090518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 310abd49676SRam Amrani p_ll2_conn->my_id, 311abd49676SRam Amrani p_pkt->cookie, 312abd49676SRam Amrani tx_frag, 313abd49676SRam Amrani b_last_frag, 314abd49676SRam Amrani b_last_packet); 3151d6cff4fSYuval Mintz } 3166291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3170a7fb11cSYuval Mintz } 3186291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 3190a7fb11cSYuval Mintz } 3200a7fb11cSYuval Mintz 3210a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3220a7fb11cSYuval Mintz { 3230a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3240a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3250a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3260a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3270a7fb11cSYuval Mintz bool b_last_frag = false; 3280a7fb11cSYuval Mintz unsigned long flags; 3290a7fb11cSYuval Mintz int rc = -EINVAL; 3300a7fb11cSYuval Mintz 33137110237SShai Malin if (!p_ll2_conn) 33237110237SShai Malin return rc; 33337110237SShai Malin 3340a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3350a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3360a7fb11cSYuval Mintz rc = -EBUSY; 3370a7fb11cSYuval Mintz goto out; 3380a7fb11cSYuval Mintz } 3390a7fb11cSYuval Mintz 3400a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3410a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3420a7fb11cSYuval Mintz while (num_bds) { 3430a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3440a7fb11cSYuval Mintz goto out; 3450a7fb11cSYuval Mintz 3460a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3470a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3480a7fb11cSYuval Mintz if (!p_pkt) 3490a7fb11cSYuval Mintz goto out; 3500a7fb11cSYuval Mintz 3510a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3520a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3530a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3540a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3550a7fb11cSYuval Mintz 3560a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3570a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3580a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3590a7fb11cSYuval Mintz goto out; 3600a7fb11cSYuval Mintz } 3610a7fb11cSYuval Mintz 3620a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3630a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3640a7fb11cSYuval Mintz while (num_bds_in_packet--) 3650a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3660a7fb11cSYuval Mintz 3670a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3680a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3690a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3700a7fb11cSYuval Mintz 3710a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3720518c12fSMichal Kalderon 3730518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 374abd49676SRam Amrani p_ll2_conn->my_id, 375abd49676SRam Amrani p_pkt->cookie, 3760518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 377abd49676SRam Amrani b_last_frag, !num_bds); 3780518c12fSMichal Kalderon 3790a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3800a7fb11cSYuval Mintz } 3810a7fb11cSYuval Mintz 3820a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 3830a7fb11cSYuval Mintz rc = 0; 3840a7fb11cSYuval Mintz out: 3850a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3860a7fb11cSYuval Mintz return rc; 3870a7fb11cSYuval Mintz } 3880a7fb11cSYuval Mintz 3890518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 390abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 3910518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 392abd49676SRam Amrani { 3930518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 3940518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 3950518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 3960518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 3970518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 3980518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 399da090917STomer Tayar data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id); 400da090917STomer Tayar 401da090917STomer Tayar data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp); 402abd49676SRam Amrani } 403abd49676SRam Amrani 40468be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 40568be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 40668be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 40768be910cSMintz, Yuval { 40868be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 4091e99c497SMichal Kalderon data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); 41068be910cSMintz, Yuval data->length.packet_length = 41168be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 41268be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 41368be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 41468be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 41568be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 41668be910cSMintz, Yuval } 41768be910cSMintz, Yuval 41868be910cSMintz, Yuval static int 4196f34a284SMichal Kalderon qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, 4206f34a284SMichal Kalderon struct qed_ll2_info *p_ll2_conn, 4216f34a284SMichal Kalderon union core_rx_cqe_union *p_cqe, 4226f34a284SMichal Kalderon unsigned long *p_lock_flags) 4236f34a284SMichal Kalderon { 4246f34a284SMichal Kalderon struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4256f34a284SMichal Kalderon struct core_rx_slow_path_cqe *sp_cqe; 4266f34a284SMichal Kalderon 4276f34a284SMichal Kalderon sp_cqe = &p_cqe->rx_cqe_sp; 4286f34a284SMichal Kalderon if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { 4296f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4306f34a284SMichal Kalderon "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", 4316f34a284SMichal Kalderon sp_cqe->ramrod_cmd_id); 4326f34a284SMichal Kalderon return -EINVAL; 4336f34a284SMichal Kalderon } 4346f34a284SMichal Kalderon 4356f34a284SMichal Kalderon if (!p_ll2_conn->cbs.slowpath_cb) { 4366f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4376f34a284SMichal Kalderon "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); 4386f34a284SMichal Kalderon return -EINVAL; 4396f34a284SMichal Kalderon } 4406f34a284SMichal Kalderon 4416f34a284SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4426f34a284SMichal Kalderon 4436f34a284SMichal Kalderon p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, 4446f34a284SMichal Kalderon p_ll2_conn->my_id, 4456f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[0]), 4466f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[1])); 4476f34a284SMichal Kalderon 4486f34a284SMichal Kalderon spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4496f34a284SMichal Kalderon 4506f34a284SMichal Kalderon return 0; 4516f34a284SMichal Kalderon } 4526f34a284SMichal Kalderon 4536f34a284SMichal Kalderon static int 45468be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4550a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4560a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 45768be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4580a7fb11cSYuval Mintz { 4590a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4600a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 46168be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4620a7fb11cSYuval Mintz 4630a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4640a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4650a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4660a7fb11cSYuval Mintz if (!p_pkt) { 4670a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 46868be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 46913c54771SMintz, Yuval p_ll2_conn->input.conn_type); 47068be910cSMintz, Yuval 4710a7fb11cSYuval Mintz return -EIO; 4720a7fb11cSYuval Mintz } 4730a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4740a7fb11cSYuval Mintz 4750518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 47668be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 4770518c12fSMichal Kalderon else 4780518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 4790a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 4800a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4810a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 48268be910cSMintz, Yuval 4830a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 4840a7fb11cSYuval Mintz 48568be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 48668be910cSMintz, Yuval data.cookie = p_pkt->cookie; 48768be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 48868be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 48968be910cSMintz, Yuval 4901df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4910518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 4920518c12fSMichal Kalderon 4931df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4940a7fb11cSYuval Mintz 4950a7fb11cSYuval Mintz return 0; 4960a7fb11cSYuval Mintz } 4970a7fb11cSYuval Mintz 4980a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 4990a7fb11cSYuval Mintz { 50013c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 5010a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5020a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5030a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5040a7fb11cSYuval Mintz unsigned long flags = 0; 5050a7fb11cSYuval Mintz int rc = 0; 5060a7fb11cSYuval Mintz 50737110237SShai Malin if (!p_ll2_conn) 50837110237SShai Malin return rc; 50937110237SShai Malin 5100a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 51137110237SShai Malin 51237110237SShai Malin if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) { 51337110237SShai Malin spin_unlock_irqrestore(&p_rx->lock, flags); 51437110237SShai Malin return 0; 51537110237SShai Malin } 51637110237SShai Malin 5170a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5180a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5190a7fb11cSYuval Mintz 5200a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5210a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5220a7fb11cSYuval Mintz 52313c54771SMintz, Yuval cqe = 52413c54771SMintz, Yuval (union core_rx_cqe_union *) 52513c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 5260a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5270a7fb11cSYuval Mintz 5280a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5290a7fb11cSYuval Mintz QED_MSG_LL2, 5300a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5310a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5320a7fb11cSYuval Mintz 5330a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5340a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5356f34a284SMichal Kalderon rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, 5366f34a284SMichal Kalderon cqe, &flags); 5370a7fb11cSYuval Mintz break; 538abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5390a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 54068be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5411df2adedSRam Amrani cqe, &flags, 5421df2adedSRam Amrani b_last_cqe); 5430a7fb11cSYuval Mintz break; 5440a7fb11cSYuval Mintz default: 5450a7fb11cSYuval Mintz rc = -EIO; 5460a7fb11cSYuval Mintz } 5470a7fb11cSYuval Mintz } 5480a7fb11cSYuval Mintz 5490a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5500a7fb11cSYuval Mintz return rc; 5510a7fb11cSYuval Mintz } 5520a7fb11cSYuval Mintz 5538c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5540a7fb11cSYuval Mintz { 5550a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5560a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5570a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5586291c608SMichal Kalderon unsigned long flags = 0; 5590a7fb11cSYuval Mintz 5600a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5610a7fb11cSYuval Mintz if (!p_ll2_conn) 5620a7fb11cSYuval Mintz return; 5630a7fb11cSYuval Mintz 5640a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5650a7fb11cSYuval Mintz 5666291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5670a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5680a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5690a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5700a7fb11cSYuval Mintz if (!p_pkt) 5710a7fb11cSYuval Mintz break; 572b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5736291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5740a7fb11cSYuval Mintz 575526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 5761d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5771d6cff4fSYuval Mintz 5781d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5791d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5801d6cff4fSYuval Mintz p_buffer); 5811d6cff4fSYuval Mintz } else { 58254f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 58354f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 58454f19f07SMintz, Yuval bool b_last; 5850a7fb11cSYuval Mintz 5860a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 58754f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 58854f19f07SMintz, Yuval p_ll2_conn->my_id, 58954f19f07SMintz, Yuval cookie, 59054f19f07SMintz, Yuval rx_buf_addr, b_last); 5910a7fb11cSYuval Mintz } 5926291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5930a7fb11cSYuval Mintz } 5946291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5951d6cff4fSYuval Mintz } 5961d6cff4fSYuval Mintz 597974f6c04SMichal Kalderon static bool 598974f6c04SMichal Kalderon qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn, 599974f6c04SMichal Kalderon struct core_rx_slow_path_cqe *p_cqe) 600974f6c04SMichal Kalderon { 601974f6c04SMichal Kalderon struct ooo_opaque *iscsi_ooo; 602974f6c04SMichal Kalderon u32 cid; 603974f6c04SMichal Kalderon 604974f6c04SMichal Kalderon if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) 605974f6c04SMichal Kalderon return false; 606974f6c04SMichal Kalderon 607974f6c04SMichal Kalderon iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data; 608974f6c04SMichal Kalderon if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES) 609974f6c04SMichal Kalderon return false; 610974f6c04SMichal Kalderon 611974f6c04SMichal Kalderon /* Need to make a flush */ 612974f6c04SMichal Kalderon cid = le32_to_cpu(iscsi_ooo->cid); 613974f6c04SMichal Kalderon qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid); 614974f6c04SMichal Kalderon 615974f6c04SMichal Kalderon return true; 616974f6c04SMichal Kalderon } 617974f6c04SMichal Kalderon 6181d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6191d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6201d6cff4fSYuval Mintz { 6211d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6221d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6231d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6241d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6251d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6261d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6271d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6281d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 6291d6cff4fSYuval Mintz u8 placement_offset = 0; 6301d6cff4fSYuval Mintz u8 cqe_type; 6311d6cff4fSYuval Mintz 6321d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6331d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6341d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6351d6cff4fSYuval Mintz return 0; 6361d6cff4fSYuval Mintz 6371d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6381d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6391d6cff4fSYuval Mintz 6401d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6411d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6421d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6431d6cff4fSYuval Mintz 644974f6c04SMichal Kalderon if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH) 645974f6c04SMichal Kalderon if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn, 646974f6c04SMichal Kalderon &cqe->rx_cqe_sp)) 647974f6c04SMichal Kalderon continue; 648974f6c04SMichal Kalderon 6491d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 6501d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6511d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6521d6cff4fSYuval Mintz cqe_type); 6531d6cff4fSYuval Mintz return -EINVAL; 6541d6cff4fSYuval Mintz } 6551d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6561d6cff4fSYuval Mintz 6571d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6581d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6591d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6601d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6611d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6621d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6631d6cff4fSYuval Mintz iscsi_ooo); 6641d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6651d6cff4fSYuval Mintz 6661d6cff4fSYuval Mintz /* Process delete isle first */ 6671d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6681d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6691d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6701d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6711d6cff4fSYuval Mintz 6721d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6731d6cff4fSYuval Mintz continue; 6741d6cff4fSYuval Mintz 6751d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6761d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6771d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6781d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6791d6cff4fSYuval Mintz ); 6801d6cff4fSYuval Mintz return -EIO; 6811d6cff4fSYuval Mintz } 6821d6cff4fSYuval Mintz 6831d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6841d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6851d6cff4fSYuval Mintz 6861d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 6871d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 6881d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 6891d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 6901d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 6911d6cff4fSYuval Mintz if (!p_pkt) { 6921d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6931d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 6941d6cff4fSYuval Mintz return -EIO; 6951d6cff4fSYuval Mintz } 6961d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 6971d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 6981d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 6991d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 7001d6cff4fSYuval Mintz p_buffer->vlan = vlan; 7011d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 7021d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 7031d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 7041d6cff4fSYuval Mintz 7051d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 7061d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 7071d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 7081d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7091d6cff4fSYuval Mintz cid, 7101d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7111d6cff4fSYuval Mintz p_buffer); 7121d6cff4fSYuval Mintz break; 7131d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 7141d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7151d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7161d6cff4fSYuval Mintz cid, 7171d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7181d6cff4fSYuval Mintz p_buffer, 7191d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 7201d6cff4fSYuval Mintz break; 7211d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 7221d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7231d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7241d6cff4fSYuval Mintz cid, 7251d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7261d6cff4fSYuval Mintz p_buffer, 7271d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7281d6cff4fSYuval Mintz break; 7291d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7301d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7311d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7321d6cff4fSYuval Mintz cid, 7331d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 7341d6cff4fSYuval Mintz 1, 7351d6cff4fSYuval Mintz p_buffer, 7361d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7371d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7381d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7391d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 7401d6cff4fSYuval Mintz break; 7411d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7421d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7431d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7441d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7451d6cff4fSYuval Mintz p_buffer, true); 7461d6cff4fSYuval Mintz break; 7471d6cff4fSYuval Mintz } 7481d6cff4fSYuval Mintz } else { 7491d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7501d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 7511d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 7521d6cff4fSYuval Mintz } 7531d6cff4fSYuval Mintz } 7541d6cff4fSYuval Mintz 7551d6cff4fSYuval Mintz return 0; 7561d6cff4fSYuval Mintz } 7571d6cff4fSYuval Mintz 7581d6cff4fSYuval Mintz static void 7591d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7601d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7611d6cff4fSYuval Mintz { 7627c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7631d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7641d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7651d6cff4fSYuval Mintz dma_addr_t first_frag; 7661d6cff4fSYuval Mintz u8 bd_flags; 7677c7973b2SMintz, Yuval int rc; 7681d6cff4fSYuval Mintz 7691d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7701d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7711d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7721d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7731d6cff4fSYuval Mintz bd_flags = 0; 7741d6cff4fSYuval Mintz 7751d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7761d6cff4fSYuval Mintz p_buffer->placement_offset; 777be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 778be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 7791d6cff4fSYuval Mintz 7807c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 7817c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 7827c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 7837c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 7847c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 7858fa74e3cSNathan Chancellor switch (p_ll2_conn->tx_dest) { 7868fa74e3cSNathan Chancellor case CORE_TX_DEST_NW: 7878fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_NW; 7888fa74e3cSNathan Chancellor break; 7898fa74e3cSNathan Chancellor case CORE_TX_DEST_LB: 7908fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 7918fa74e3cSNathan Chancellor break; 7928fa74e3cSNathan Chancellor case CORE_TX_DEST_DROP: 7938fa74e3cSNathan Chancellor default: 7948fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 7958fa74e3cSNathan Chancellor break; 7968fa74e3cSNathan Chancellor } 7977c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 7987c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 7997c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 8007c7973b2SMintz, Yuval 8017c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 8027c7973b2SMintz, Yuval &tx_pkt, true); 8031d6cff4fSYuval Mintz if (rc) { 8041d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 8051d6cff4fSYuval Mintz p_buffer, false); 8061d6cff4fSYuval Mintz break; 8071d6cff4fSYuval Mintz } 8081d6cff4fSYuval Mintz } 8091d6cff4fSYuval Mintz } 8101d6cff4fSYuval Mintz 8111d6cff4fSYuval Mintz static void 8121d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 8131d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 8141d6cff4fSYuval Mintz { 8151d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8161d6cff4fSYuval Mintz int rc; 8171d6cff4fSYuval Mintz 8181d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 8191d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 8201d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 8211d6cff4fSYuval Mintz p_ll2_conn->my_id, 8221d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 8231d6cff4fSYuval Mintz 0, p_buffer, true); 8241d6cff4fSYuval Mintz if (rc) { 8251d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8261d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8271d6cff4fSYuval Mintz break; 8281d6cff4fSYuval Mintz } 8291d6cff4fSYuval Mintz } 8301d6cff4fSYuval Mintz } 8311d6cff4fSYuval Mintz 8321d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8331d6cff4fSYuval Mintz { 8341d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8351d6cff4fSYuval Mintz int rc; 8361d6cff4fSYuval Mintz 83737110237SShai Malin if (!p_ll2_conn) 83837110237SShai Malin return 0; 83937110237SShai Malin 840fc16f56bSMichal Kalderon if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 841fc16f56bSMichal Kalderon return 0; 842fc16f56bSMichal Kalderon 8431d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8441d6cff4fSYuval Mintz if (rc) 8451d6cff4fSYuval Mintz return rc; 8461d6cff4fSYuval Mintz 8471d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8481d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8491d6cff4fSYuval Mintz 8501d6cff4fSYuval Mintz return 0; 8511d6cff4fSYuval Mintz } 8521d6cff4fSYuval Mintz 8531d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8541d6cff4fSYuval Mintz { 8551d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8561d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8571d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8581d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8591d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8601d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8611d6cff4fSYuval Mintz int rc; 8621d6cff4fSYuval Mintz 86337110237SShai Malin if (!p_ll2_conn) 86437110237SShai Malin return 0; 86537110237SShai Malin 866fc16f56bSMichal Kalderon if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 867fc16f56bSMichal Kalderon return 0; 868fc16f56bSMichal Kalderon 8691d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8701d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8711d6cff4fSYuval Mintz 8721d6cff4fSYuval Mintz if (!num_bds) 8731d6cff4fSYuval Mintz return 0; 8741d6cff4fSYuval Mintz 8751d6cff4fSYuval Mintz while (num_bds) { 8761d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 8771d6cff4fSYuval Mintz return -EINVAL; 8781d6cff4fSYuval Mintz 8791d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8801d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8811d6cff4fSYuval Mintz if (!p_pkt) 8821d6cff4fSYuval Mintz return -EINVAL; 8831d6cff4fSYuval Mintz 8841d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8851d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8861d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8871d6cff4fSYuval Mintz p_pkt->bd_used); 8881d6cff4fSYuval Mintz return -EINVAL; 8891d6cff4fSYuval Mintz } 8901d6cff4fSYuval Mintz 8911d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 8921d6cff4fSYuval Mintz 8931d6cff4fSYuval Mintz num_bds--; 8941d6cff4fSYuval Mintz p_tx->bds_idx++; 8951d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 8961d6cff4fSYuval Mintz 8971d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 8981d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 8991d6cff4fSYuval Mintz 9001d6cff4fSYuval Mintz if (b_dont_submit_rx) { 9011d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 9021d6cff4fSYuval Mintz p_buffer); 9031d6cff4fSYuval Mintz continue; 9041d6cff4fSYuval Mintz } 9051d6cff4fSYuval Mintz 9061d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 9071d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 9081d6cff4fSYuval Mintz p_buffer, true); 9091d6cff4fSYuval Mintz if (rc != 0) { 9101d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 9111d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 9121d6cff4fSYuval Mintz b_dont_submit_rx = true; 9131d6cff4fSYuval Mintz } 9141d6cff4fSYuval Mintz } 9151d6cff4fSYuval Mintz 9161d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 9171d6cff4fSYuval Mintz 9181d6cff4fSYuval Mintz return 0; 9191d6cff4fSYuval Mintz } 9201d6cff4fSYuval Mintz 9217e50769cSMichal Kalderon static void qed_ll2_stop_ooo(struct qed_hwfn *p_hwfn) 9221d6cff4fSYuval Mintz { 9237e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9241d6cff4fSYuval Mintz 9257e50769cSMichal Kalderon DP_VERBOSE(p_hwfn, (QED_MSG_STORAGE | QED_MSG_LL2), 9267e50769cSMichal Kalderon "Stopping LL2 OOO queue [%02x]\n", *handle); 9271d6cff4fSYuval Mintz 9287e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, *handle); 9297e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 9301d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9311d6cff4fSYuval Mintz } 9321d6cff4fSYuval Mintz 9330a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 9340a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 9350a7fb11cSYuval Mintz u8 action_on_error) 9360a7fb11cSYuval Mintz { 93713c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9380a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 9390a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 9400a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9410a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9420a7fb11cSYuval Mintz u16 cqe_pbl_size; 9430a7fb11cSYuval Mintz int rc = 0; 9440a7fb11cSYuval Mintz 9450a7fb11cSYuval Mintz /* Get SPQ entry */ 9460a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9470a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9480a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9490a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9500a7fb11cSYuval Mintz 9510a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9520a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 9530a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9540a7fb11cSYuval Mintz if (rc) 9550a7fb11cSYuval Mintz return rc; 9560a7fb11cSYuval Mintz 9570a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 958997af5dfSMichal Kalderon memset(p_ramrod, 0, sizeof(*p_ramrod)); 9590a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9600a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 9610a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 9620a7fb11cSYuval Mintz 96313c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 96413c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 9650a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 9660a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 9670a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 9680a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 9690a7fb11cSYuval Mintz 97013c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 971da090917STomer Tayar p_ramrod->inner_vlan_stripping_en = 972da090917STomer Tayar p_ll2_conn->input.rx_vlan_removal_en; 973cac6f691SSudarsana Reddy Kalluru 974cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 975cac6f691SSudarsana Reddy Kalluru p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) 976cac6f691SSudarsana Reddy Kalluru p_ramrod->report_outer_vlan = 1; 9770a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 978ed468ebeSMichal Kalderon p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; 9790a7fb11cSYuval Mintz 9800bc5fe85SSudarsana Reddy Kalluru if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) && 9810bc5fe85SSudarsana Reddy Kalluru p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE && 982897e87a1SShai Malin conn_type != QED_LL2_TYPE_IWARP && 983897e87a1SShai Malin (!QED_IS_NVMETCP_PERSONALITY(p_hwfn))) { 9840a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 9850a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 9860a7fb11cSYuval Mintz } else { 9870a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 9880a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 9890a7fb11cSYuval Mintz } 9900a7fb11cSYuval Mintz 9910a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 99213c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 993997af5dfSMichal Kalderon p_ramrod->zero_prod_flg = 1; 994997af5dfSMichal Kalderon 9950a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 9960a7fb11cSYuval Mintz } 9970a7fb11cSYuval Mintz 9980a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 9990a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10000a7fb11cSYuval Mintz { 100113c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 10020a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 10030a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 10040a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10050a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10060a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 10070a7fb11cSYuval Mintz int rc = -EINVAL; 10080a7fb11cSYuval Mintz 10090a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 10100a7fb11cSYuval Mintz return 0; 10110a7fb11cSYuval Mintz 1012526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 10131d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 10141d6cff4fSYuval Mintz else 10151d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 10161d6cff4fSYuval Mintz 10170a7fb11cSYuval Mintz /* Get SPQ entry */ 10180a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10190a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10200a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10210a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10220a7fb11cSYuval Mintz 10230a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10240a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 10250a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10260a7fb11cSYuval Mintz if (rc) 10270a7fb11cSYuval Mintz return rc; 10280a7fb11cSYuval Mintz 10290a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 10300a7fb11cSYuval Mintz 10310a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10320a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 103313c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 10340a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 10350a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 10360a7fb11cSYuval Mintz 10370a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 10380a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 10390a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 10400a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 10410a7fb11cSYuval Mintz 104213c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 1043526d1d05SKalderon, Michal case PURE_LB_TC: 1044b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 1045b5a9ee7cSAriel Elior break; 1046526d1d05SKalderon, Michal case PKT_LB_TC: 1047b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 1048827d240aSColin Ian King break; 1049b5a9ee7cSAriel Elior default: 1050b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 1051b5a9ee7cSAriel Elior break; 1052b5a9ee7cSAriel Elior } 1053b5a9ee7cSAriel Elior 10540a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 10550a7fb11cSYuval Mintz 10560a7fb11cSYuval Mintz switch (conn_type) { 10571e128c81SArun Easi case QED_LL2_TYPE_FCOE: 10581e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 10591e128c81SArun Easi break; 10601bd4f571SOmkar Kulkarni case QED_LL2_TYPE_TCP_ULP: 10611bd4f571SOmkar Kulkarni p_ramrod->conn_type = PROTOCOLID_TCP_ULP; 10620a7fb11cSYuval Mintz break; 10630a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 10640a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 10650a7fb11cSYuval Mintz break; 1066cc4ad324SKalderon, Michal case QED_LL2_TYPE_IWARP: 1067cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1068cc4ad324SKalderon, Michal break; 1069cc4ad324SKalderon, Michal case QED_LL2_TYPE_OOO: 1070897e87a1SShai Malin if (p_hwfn->hw_info.personality == QED_PCI_ISCSI || 1071897e87a1SShai Malin p_hwfn->hw_info.personality == QED_PCI_NVMETCP) 10721bd4f571SOmkar Kulkarni p_ramrod->conn_type = PROTOCOLID_TCP_ULP; 1073cc4ad324SKalderon, Michal else 1074cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1075cc4ad324SKalderon, Michal break; 10760a7fb11cSYuval Mintz default: 10770a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 10780a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 10790a7fb11cSYuval Mintz } 10800a7fb11cSYuval Mintz 108113c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 108213c54771SMintz, Yuval 1083b78d5400SAriel Elior rc = qed_spq_post(p_hwfn, p_ent, NULL); 1084b78d5400SAriel Elior if (rc) 1085b78d5400SAriel Elior return rc; 1086b78d5400SAriel Elior 1087b78d5400SAriel Elior rc = qed_db_recovery_add(p_hwfn->cdev, p_tx->doorbell_addr, 1088b78d5400SAriel Elior &p_tx->db_msg, DB_REC_WIDTH_32B, 1089b78d5400SAriel Elior DB_REC_KERNEL); 1090b78d5400SAriel Elior return rc; 10910a7fb11cSYuval Mintz } 10920a7fb11cSYuval Mintz 10930a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 10940a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10950a7fb11cSYuval Mintz { 10960a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 10970a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10980a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10990a7fb11cSYuval Mintz int rc = -EINVAL; 11000a7fb11cSYuval Mintz 11010a7fb11cSYuval Mintz /* Get SPQ entry */ 11020a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11030a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11040a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11050a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11060a7fb11cSYuval Mintz 11070a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11080a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 11090a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11100a7fb11cSYuval Mintz if (rc) 11110a7fb11cSYuval Mintz return rc; 11120a7fb11cSYuval Mintz 11130a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 11140a7fb11cSYuval Mintz 11150a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 11160a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 11170a7fb11cSYuval Mintz 11180a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11190a7fb11cSYuval Mintz } 11200a7fb11cSYuval Mintz 11210a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11220a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11230a7fb11cSYuval Mintz { 1124b78d5400SAriel Elior struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 11250a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11260a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11270a7fb11cSYuval Mintz int rc = -EINVAL; 1128*ee824f4bSOmkar Kulkarni 1129b78d5400SAriel Elior qed_db_recovery_del(p_hwfn->cdev, p_tx->doorbell_addr, &p_tx->db_msg); 11300a7fb11cSYuval Mintz 11310a7fb11cSYuval Mintz /* Get SPQ entry */ 11320a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11330a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11340a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11350a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11360a7fb11cSYuval Mintz 11370a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11380a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11390a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11400a7fb11cSYuval Mintz if (rc) 11410a7fb11cSYuval Mintz return rc; 11420a7fb11cSYuval Mintz 11430a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11440a7fb11cSYuval Mintz } 11450a7fb11cSYuval Mintz 11460a7fb11cSYuval Mintz static int 11470a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 114813c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11490a7fb11cSYuval Mintz { 1150b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1151b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1152b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1153b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.rx_num_desc, 1154b6db3f71SAlexander Lobakin }; 1155b6db3f71SAlexander Lobakin struct qed_dev *cdev = p_hwfn->cdev; 11560a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 11570a7fb11cSYuval Mintz u32 capacity; 11580a7fb11cSYuval Mintz int rc = 0; 11590a7fb11cSYuval Mintz 116013c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 11610a7fb11cSYuval Mintz goto out; 11620a7fb11cSYuval Mintz 1163b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_NEXT_PTR; 1164b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_bd); 1165b6db3f71SAlexander Lobakin 1166b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rxq_chain, ¶ms); 11670a7fb11cSYuval Mintz if (rc) { 11680a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 11690a7fb11cSYuval Mintz goto out; 11700a7fb11cSYuval Mintz } 11710a7fb11cSYuval Mintz 11720a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 11730a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 11740a7fb11cSYuval Mintz GFP_KERNEL); 11750a7fb11cSYuval Mintz if (!p_descq) { 11760a7fb11cSYuval Mintz rc = -ENOMEM; 11770a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 11780a7fb11cSYuval Mintz goto out; 11790a7fb11cSYuval Mintz } 11800a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 11810a7fb11cSYuval Mintz 1182b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_PBL; 1183b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_fast_path_cqe); 1184b6db3f71SAlexander Lobakin 1185b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rcq_chain, ¶ms); 11860a7fb11cSYuval Mintz if (rc) { 11870a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 11880a7fb11cSYuval Mintz goto out; 11890a7fb11cSYuval Mintz } 11900a7fb11cSYuval Mintz 11910a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 11920a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 119313c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 11940a7fb11cSYuval Mintz 11950a7fb11cSYuval Mintz out: 11960a7fb11cSYuval Mintz return rc; 11970a7fb11cSYuval Mintz } 11980a7fb11cSYuval Mintz 11990a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 120013c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 12010a7fb11cSYuval Mintz { 1202b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1203b6db3f71SAlexander Lobakin .mode = QED_CHAIN_MODE_PBL, 1204b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1205b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1206b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.tx_num_desc, 1207b6db3f71SAlexander Lobakin .elem_size = sizeof(struct core_tx_bd), 1208b6db3f71SAlexander Lobakin }; 12090a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 1210a93b6a2bSGustavo A. R. Silva size_t desc_size; 12110a7fb11cSYuval Mintz u32 capacity; 12120a7fb11cSYuval Mintz int rc = 0; 12130a7fb11cSYuval Mintz 121413c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 12150a7fb11cSYuval Mintz goto out; 12160a7fb11cSYuval Mintz 1217b6db3f71SAlexander Lobakin rc = qed_chain_alloc(p_hwfn->cdev, &p_ll2_info->tx_queue.txq_chain, 1218b6db3f71SAlexander Lobakin ¶ms); 12190a7fb11cSYuval Mintz if (rc) 12200a7fb11cSYuval Mintz goto out; 12210a7fb11cSYuval Mintz 12220a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 1223a93b6a2bSGustavo A. R. Silva /* All bds_set elements are flexibily added. */ 1224a93b6a2bSGustavo A. R. Silva desc_size = struct_size(p_descq, bds_set, 1225a93b6a2bSGustavo A. R. Silva p_ll2_info->input.tx_max_bds_per_packet); 1226f5823fe6SMichal Kalderon 1227f5823fe6SMichal Kalderon p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); 12280a7fb11cSYuval Mintz if (!p_descq) { 12290a7fb11cSYuval Mintz rc = -ENOMEM; 12300a7fb11cSYuval Mintz goto out; 12310a7fb11cSYuval Mintz } 1232f5823fe6SMichal Kalderon p_ll2_info->tx_queue.descq_mem = p_descq; 12330a7fb11cSYuval Mintz 12340a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12350a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 123613c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 12370a7fb11cSYuval Mintz 12380a7fb11cSYuval Mintz out: 12390a7fb11cSYuval Mintz if (rc) 12400a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12410a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 124213c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 12430a7fb11cSYuval Mintz return rc; 12440a7fb11cSYuval Mintz } 12450a7fb11cSYuval Mintz 124613c54771SMintz, Yuval static int 124713c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 124813c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 124913c54771SMintz, Yuval { 125013c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 125113c54771SMintz, Yuval void *p_virt; 125213c54771SMintz, Yuval u16 buf_idx; 125313c54771SMintz, Yuval int rc = 0; 125413c54771SMintz, Yuval 1255526d1d05SKalderon, Michal if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO) 125613c54771SMintz, Yuval return rc; 125713c54771SMintz, Yuval 125813c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 125913c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 126013c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 126113c54771SMintz, Yuval 126213c54771SMintz, Yuval if (!num_desc) 126313c54771SMintz, Yuval return -EINVAL; 126413c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 126513c54771SMintz, Yuval } 126613c54771SMintz, Yuval 126713c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 126813c54771SMintz, Yuval buf_idx++) { 126913c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 127013c54771SMintz, Yuval if (!p_buf) { 127113c54771SMintz, Yuval rc = -ENOMEM; 127213c54771SMintz, Yuval goto out; 127313c54771SMintz, Yuval } 127413c54771SMintz, Yuval 127513c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 127613c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 127713c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 127813c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 127913c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 128013c54771SMintz, Yuval p_buf->rx_buffer_size, 128113c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 128213c54771SMintz, Yuval GFP_KERNEL); 128313c54771SMintz, Yuval if (!p_virt) { 128413c54771SMintz, Yuval kfree(p_buf); 128513c54771SMintz, Yuval rc = -ENOMEM; 128613c54771SMintz, Yuval goto out; 128713c54771SMintz, Yuval } 128813c54771SMintz, Yuval 128913c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 129013c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 129113c54771SMintz, Yuval } 129213c54771SMintz, Yuval 129313c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 129413c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 129513c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 129613c54771SMintz, Yuval 129713c54771SMintz, Yuval out: 129813c54771SMintz, Yuval return rc; 129913c54771SMintz, Yuval } 130013c54771SMintz, Yuval 13010518c12fSMichal Kalderon static int 13020518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 13030518c12fSMichal Kalderon { 13040518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 13050518c12fSMichal Kalderon !cbs->rx_release_cb || 13060518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 13070518c12fSMichal Kalderon return -EINVAL; 13080518c12fSMichal Kalderon 13090518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 13100518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 13110518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 13120518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 13136f34a284SMichal Kalderon p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; 13140518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 13150518c12fSMichal Kalderon 13160518c12fSMichal Kalderon return 0; 13170518c12fSMichal Kalderon } 13180518c12fSMichal Kalderon 1319997af5dfSMichal Kalderon static void _qed_ll2_calc_allowed_conns(struct qed_hwfn *p_hwfn, 1320997af5dfSMichal Kalderon struct qed_ll2_acquire_data *data, 1321997af5dfSMichal Kalderon u8 *start_idx, u8 *last_idx) 1322997af5dfSMichal Kalderon { 1323997af5dfSMichal Kalderon /* LL2 queues handles will be split as follows: 1324997af5dfSMichal Kalderon * First will be the legacy queues, and then the ctx based. 1325997af5dfSMichal Kalderon */ 1326997af5dfSMichal Kalderon if (data->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1327997af5dfSMichal Kalderon *start_idx = QED_LL2_LEGACY_CONN_BASE_PF; 1328997af5dfSMichal Kalderon *last_idx = *start_idx + 1329997af5dfSMichal Kalderon QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF; 1330997af5dfSMichal Kalderon } else { 1331997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX */ 1332997af5dfSMichal Kalderon *start_idx = QED_LL2_CTX_CONN_BASE_PF; 1333997af5dfSMichal Kalderon *last_idx = *start_idx + 1334997af5dfSMichal Kalderon QED_MAX_NUM_OF_CTX_LL2_CONNS_PF; 1335997af5dfSMichal Kalderon } 1336997af5dfSMichal Kalderon } 1337997af5dfSMichal Kalderon 133813c54771SMintz, Yuval static enum core_error_handle 133913c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 134013c54771SMintz, Yuval { 134113c54771SMintz, Yuval switch (err) { 134213c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 134313c54771SMintz, Yuval return LL2_DROP_PACKET; 134413c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 134513c54771SMintz, Yuval return LL2_DO_NOTHING; 134613c54771SMintz, Yuval case QED_LL2_ASSERT: 134713c54771SMintz, Yuval return LL2_ASSERT; 134813c54771SMintz, Yuval default: 134913c54771SMintz, Yuval return LL2_DO_NOTHING; 135013c54771SMintz, Yuval } 135113c54771SMintz, Yuval } 135213c54771SMintz, Yuval 13530518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 13540a7fb11cSYuval Mintz { 13550518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13560a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 1358997af5dfSMichal Kalderon u8 i, first_idx, last_idx, *p_tx_max; 13590a7fb11cSYuval Mintz int rc; 13600a7fb11cSYuval Mintz 136113c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 13620a7fb11cSYuval Mintz return -EINVAL; 13630a7fb11cSYuval Mintz 1364997af5dfSMichal Kalderon _qed_ll2_calc_allowed_conns(p_hwfn, data, &first_idx, &last_idx); 1365997af5dfSMichal Kalderon 13660a7fb11cSYuval Mintz /* Find a free connection to be used */ 1367997af5dfSMichal Kalderon for (i = first_idx; i < last_idx; i++) { 13680a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13690a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13700a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13710a7fb11cSYuval Mintz continue; 13720a7fb11cSYuval Mintz } 13730a7fb11cSYuval Mintz 13740a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13750a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13760a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13770a7fb11cSYuval Mintz break; 13780a7fb11cSYuval Mintz } 13790a7fb11cSYuval Mintz if (!p_ll2_info) 13800a7fb11cSYuval Mintz return -EBUSY; 13810a7fb11cSYuval Mintz 138213c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 13830a7fb11cSYuval Mintz 1384da090917STomer Tayar switch (data->input.tx_dest) { 1385da090917STomer Tayar case QED_LL2_TX_DEST_NW: 1386da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_NW; 1387da090917STomer Tayar break; 1388da090917STomer Tayar case QED_LL2_TX_DEST_LB: 1389da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_LB; 1390da090917STomer Tayar break; 1391da090917STomer Tayar case QED_LL2_TX_DEST_DROP: 1392da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_DROP; 1393da090917STomer Tayar break; 1394da090917STomer Tayar default: 1395da090917STomer Tayar return -EINVAL; 1396da090917STomer Tayar } 1397da090917STomer Tayar 1398ed468ebeSMichal Kalderon if (data->input.conn_type == QED_LL2_TYPE_OOO || 1399ed468ebeSMichal Kalderon data->input.secondary_queue) 1400ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = false; 1401ed468ebeSMichal Kalderon else 1402ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = true; 140313c54771SMintz, Yuval 140413c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 140513c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 140613c54771SMintz, Yuval if (*p_tx_max == 0) 140713c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 140813c54771SMintz, Yuval else 140913c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 141013c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 14110518c12fSMichal Kalderon 14120518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 14130518c12fSMichal Kalderon if (rc) { 14140518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 14150518c12fSMichal Kalderon goto q_allocate_fail; 14160518c12fSMichal Kalderon } 14170518c12fSMichal Kalderon 141813c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 14190a7fb11cSYuval Mintz if (rc) 14200a7fb11cSYuval Mintz goto q_allocate_fail; 14210a7fb11cSYuval Mintz 142213c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 14230a7fb11cSYuval Mintz if (rc) 14240a7fb11cSYuval Mintz goto q_allocate_fail; 14250a7fb11cSYuval Mintz 14261d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 142713c54771SMintz, Yuval data->input.mtu); 14281d6cff4fSYuval Mintz if (rc) 14291d6cff4fSYuval Mintz goto q_allocate_fail; 14301d6cff4fSYuval Mintz 14310a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 1432526d1d05SKalderon, Michal if (data->input.conn_type == QED_LL2_TYPE_OOO) { 14331d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 14341d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 14351d6cff4fSYuval Mintz } else { 14360a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 14370a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 14381d6cff4fSYuval Mintz } 14390a7fb11cSYuval Mintz 144013c54771SMintz, Yuval if (data->input.rx_num_desc) { 14410a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 14420a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14430a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 14440a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 14456a42b512SColin Ian King p_ll2_info->rx_queue.b_cb_registered = true; 14460a7fb11cSYuval Mintz } 14470a7fb11cSYuval Mintz 144813c54771SMintz, Yuval if (data->input.tx_num_desc) { 14490a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 14500a7fb11cSYuval Mintz comp_tx_cb, 14510a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14520a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 14530a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 14546a42b512SColin Ian King p_ll2_info->tx_queue.b_cb_registered = true; 14550a7fb11cSYuval Mintz } 14560a7fb11cSYuval Mintz 145713c54771SMintz, Yuval *data->p_connection_handle = i; 14580a7fb11cSYuval Mintz return rc; 14590a7fb11cSYuval Mintz 14600a7fb11cSYuval Mintz q_allocate_fail: 14610a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 14620a7fb11cSYuval Mintz return -ENOMEM; 14630a7fb11cSYuval Mintz } 14640a7fb11cSYuval Mintz 14650a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 14660a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 14670a7fb11cSYuval Mintz { 146813c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 146913c54771SMintz, Yuval enum core_error_handle error_mode; 14700a7fb11cSYuval Mintz u8 action_on_error = 0; 1471997af5dfSMichal Kalderon int rc; 14720a7fb11cSYuval Mintz 14730a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 14740a7fb11cSYuval Mintz return 0; 14750a7fb11cSYuval Mintz 14760a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 147713c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 147813c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 14790a7fb11cSYuval Mintz SET_FIELD(action_on_error, 148013c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 148113c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 148213c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 148313c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 14840a7fb11cSYuval Mintz 1485997af5dfSMichal Kalderon rc = qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 1486997af5dfSMichal Kalderon if (rc) 1487997af5dfSMichal Kalderon return rc; 1488997af5dfSMichal Kalderon 1489997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) { 1490997af5dfSMichal Kalderon rc = qed_db_recovery_add(p_hwfn->cdev, 1491997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 1492997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data, 1493997af5dfSMichal Kalderon DB_REC_WIDTH_64B, DB_REC_KERNEL); 1494997af5dfSMichal Kalderon } 1495997af5dfSMichal Kalderon 1496997af5dfSMichal Kalderon return rc; 14970a7fb11cSYuval Mintz } 14980a7fb11cSYuval Mintz 149958de2898SMintz, Yuval static void 150058de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 150158de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 150258de2898SMintz, Yuval { 1503526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 150458de2898SMintz, Yuval return; 150558de2898SMintz, Yuval 150658de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 150758de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 150858de2898SMintz, Yuval } 15090518c12fSMichal Kalderon 1510997af5dfSMichal Kalderon static inline u8 qed_ll2_handle_to_queue_id(struct qed_hwfn *p_hwfn, 1511997af5dfSMichal Kalderon u8 handle, 1512997af5dfSMichal Kalderon u8 ll2_queue_type) 1513997af5dfSMichal Kalderon { 1514997af5dfSMichal Kalderon u8 qid; 1515997af5dfSMichal Kalderon 1516997af5dfSMichal Kalderon if (ll2_queue_type == QED_LL2_RX_TYPE_LEGACY) 1517997af5dfSMichal Kalderon return p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + handle; 1518997af5dfSMichal Kalderon 1519997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX 1520997af5dfSMichal Kalderon * FW distinguishes between the legacy queues (ram based) and the 1521997af5dfSMichal Kalderon * ctx based queues by the queue_id. 1522997af5dfSMichal Kalderon * The first MAX_NUM_LL2_RX_RAM_QUEUES queues are legacy 1523997af5dfSMichal Kalderon * and the queue ids above that are ctx base. 1524997af5dfSMichal Kalderon */ 1525997af5dfSMichal Kalderon qid = p_hwfn->hw_info.resc_start[QED_LL2_CTX_QUEUE] + 1526997af5dfSMichal Kalderon MAX_NUM_LL2_RX_RAM_QUEUES; 1527997af5dfSMichal Kalderon 1528997af5dfSMichal Kalderon /* See comment on the acquire connection for how the ll2 1529997af5dfSMichal Kalderon * queues handles are divided. 1530997af5dfSMichal Kalderon */ 1531997af5dfSMichal Kalderon qid += (handle - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF); 1532997af5dfSMichal Kalderon 1533997af5dfSMichal Kalderon return qid; 1534997af5dfSMichal Kalderon } 1535997af5dfSMichal Kalderon 15360518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 15370a7fb11cSYuval Mintz { 1538fb09a1edSShai Malin struct core_conn_context *p_cxt; 1539f5823fe6SMichal Kalderon struct qed_ll2_tx_packet *p_pkt; 1540997af5dfSMichal Kalderon struct qed_ll2_info *p_ll2_conn; 1541997af5dfSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 15420a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 15430a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 1544997af5dfSMichal Kalderon struct qed_cxt_info cxt_info; 154515582962SRahul Verma struct qed_ptt *p_ptt; 15460a7fb11cSYuval Mintz int rc = -EINVAL; 15470a7fb11cSYuval Mintz u32 i, capacity; 1548a93b6a2bSGustavo A. R. Silva size_t desc_size; 15490a7fb11cSYuval Mintz u8 qid; 15500a7fb11cSYuval Mintz 155115582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 155215582962SRahul Verma if (!p_ptt) 155315582962SRahul Verma return -EAGAIN; 155415582962SRahul Verma 15550a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 155615582962SRahul Verma if (!p_ll2_conn) { 155715582962SRahul Verma rc = -EINVAL; 155815582962SRahul Verma goto out; 155915582962SRahul Verma } 156015582962SRahul Verma 15610a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 15620a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 15630a7fb11cSYuval Mintz 15640a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 15650a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 15660a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 15670a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 15680a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 15690a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 15700a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 15710a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 15720a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 15730a7fb11cSYuval Mintz &p_rx->free_descq); 15740a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 15750a7fb11cSYuval Mintz 15760a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 15770a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 15780a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 15790a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 15800a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 15810a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 1582a93b6a2bSGustavo A. R. Silva /* All bds_set elements are flexibily added. */ 1583a93b6a2bSGustavo A. R. Silva desc_size = struct_size(p_pkt, bds_set, 1584a93b6a2bSGustavo A. R. Silva p_ll2_conn->input.tx_max_bds_per_packet); 1585f5823fe6SMichal Kalderon 1586f5823fe6SMichal Kalderon for (i = 0; i < capacity; i++) { 1587f5823fe6SMichal Kalderon p_pkt = p_tx->descq_mem + desc_size * i; 1588f5823fe6SMichal Kalderon list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 1589f5823fe6SMichal Kalderon } 15900a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 15910a7fb11cSYuval Mintz p_tx->bds_idx = 0; 15920a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 15930a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 15940a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15950a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 15960a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 15970a7fb11cSYuval Mintz 159815582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 159915582962SRahul Verma if (rc) 160015582962SRahul Verma goto out; 1601997af5dfSMichal Kalderon cxt_info.iid = p_ll2_conn->cid; 1602997af5dfSMichal Kalderon rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info); 1603997af5dfSMichal Kalderon if (rc) { 1604997af5dfSMichal Kalderon DP_NOTICE(p_hwfn, "Cannot find context info for cid=%d\n", 1605997af5dfSMichal Kalderon p_ll2_conn->cid); 1606997af5dfSMichal Kalderon goto out; 1607997af5dfSMichal Kalderon } 16080a7fb11cSYuval Mintz 1609997af5dfSMichal Kalderon p_cxt = cxt_info.p_cxt; 1610997af5dfSMichal Kalderon 1611997af5dfSMichal Kalderon memset(p_cxt, 0, sizeof(*p_cxt)); 1612997af5dfSMichal Kalderon 1613997af5dfSMichal Kalderon qid = qed_ll2_handle_to_queue_id(p_hwfn, connection_handle, 1614997af5dfSMichal Kalderon p_ll2_conn->input.rx_conn_type); 16150a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 16160a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 1617997af5dfSMichal Kalderon 1618997af5dfSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_LL2, 1619997af5dfSMichal Kalderon "Establishing ll2 queue. PF %d ctx_based=%d abs qid=%d\n", 1620997af5dfSMichal Kalderon p_hwfn->rel_pf_id, p_ll2_conn->input.rx_conn_type, qid); 1621997af5dfSMichal Kalderon 1622997af5dfSMichal Kalderon if (p_ll2_conn->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1623997af5dfSMichal Kalderon p_rx->set_prod_addr = p_hwfn->regview + 1624997af5dfSMichal Kalderon GTT_BAR0_MAP_REG_TSDM_RAM + TSTORM_LL2_RX_PRODS_OFFSET(qid); 1625997af5dfSMichal Kalderon } else { 1626997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX - using doorbell */ 1627997af5dfSMichal Kalderon p_rx->ctx_based = 1; 1628997af5dfSMichal Kalderon 1629997af5dfSMichal Kalderon p_rx->set_prod_addr = p_hwfn->doorbells + 1630997af5dfSMichal Kalderon p_hwfn->dpi_start_offset + 1631997af5dfSMichal Kalderon DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_LL2_PROD_UPDATE); 1632997af5dfSMichal Kalderon 1633997af5dfSMichal Kalderon /* prepare db data */ 1634997af5dfSMichal Kalderon p_rx->db_data.icid = cpu_to_le16((u16)p_ll2_conn->cid); 1635997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1636997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_AGG_CMD, DB_AGG_CMD_SET); 1637997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1638997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_RESERVED1, 0); 1639997af5dfSMichal Kalderon } 1640997af5dfSMichal Kalderon 16410a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 16420a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 16430a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 1644b78d5400SAriel Elior /* prepare db data */ 1645b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 1646b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 1647b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 1648b78d5400SAriel Elior DQ_XCM_CORE_TX_BD_PROD_CMD); 1649b78d5400SAriel Elior p_tx->db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 1650b78d5400SAriel Elior 16510a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 16520a7fb11cSYuval Mintz if (rc) 165315582962SRahul Verma goto out; 16540a7fb11cSYuval Mintz 16550a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 16560a7fb11cSYuval Mintz if (rc) 165715582962SRahul Verma goto out; 16580a7fb11cSYuval Mintz 1659897e87a1SShai Malin if (!QED_IS_RDMA_PERSONALITY(p_hwfn) && 1660897e87a1SShai Malin !QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 166115582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 16620a7fb11cSYuval Mintz 16631d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 16641d6cff4fSYuval Mintz 166513c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1666cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 166779284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 166879284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 166979284adeSMichal Kalderon ETH_P_FCOE, 0); 167079284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 167179284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 167279284adeSMichal Kalderon ETH_P_FIP, 0); 16731e128c81SArun Easi } 16741e128c81SArun Easi 167515582962SRahul Verma out: 167615582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 16770a7fb11cSYuval Mintz return rc; 16780a7fb11cSYuval Mintz } 16790a7fb11cSYuval Mintz 16800a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 16810a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 16820a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 16830a7fb11cSYuval Mintz { 16840a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 1685997af5dfSMichal Kalderon struct core_ll2_rx_prod rx_prod = { 0, 0 }; 16860a7fb11cSYuval Mintz bool b_notify_fw = false; 16870a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 16880a7fb11cSYuval Mintz 16890a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 16900a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 16910a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 16920a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 16930a7fb11cSYuval Mintz list_entry); 1694b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 16950a7fb11cSYuval Mintz &p_rx->active_descq); 16960a7fb11cSYuval Mintz b_notify_fw = true; 16970a7fb11cSYuval Mintz } 16980a7fb11cSYuval Mintz 16990a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 17000a7fb11cSYuval Mintz if (p_curp) { 17010a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 17020a7fb11cSYuval Mintz b_notify_fw = true; 17030a7fb11cSYuval Mintz } 17040a7fb11cSYuval Mintz 17050a7fb11cSYuval Mintz if (!b_notify_fw) 17060a7fb11cSYuval Mintz return; 17070a7fb11cSYuval Mintz 17080a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 17090a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 1710997af5dfSMichal Kalderon if (p_rx->ctx_based) { 1711997af5dfSMichal Kalderon /* update producer by giving a doorbell */ 1712997af5dfSMichal Kalderon p_rx->db_data.prod.bd_prod = cpu_to_le16(bd_prod); 1713997af5dfSMichal Kalderon p_rx->db_data.prod.cqe_prod = cpu_to_le16(cq_prod); 1714997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1715997af5dfSMichal Kalderon * doorbell 1716997af5dfSMichal Kalderon */ 1717997af5dfSMichal Kalderon dma_wmb(); 1718997af5dfSMichal Kalderon DIRECT_REG_WR64(p_rx->set_prod_addr, 1719997af5dfSMichal Kalderon *((u64 *)&p_rx->db_data)); 1720997af5dfSMichal Kalderon } else { 17210a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 17220a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 172346721c3dSDenis Bolotin 1724997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1725997af5dfSMichal Kalderon * doorbell 1726997af5dfSMichal Kalderon */ 172746721c3dSDenis Bolotin dma_wmb(); 172846721c3dSDenis Bolotin 17290a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 17300a7fb11cSYuval Mintz } 1731997af5dfSMichal Kalderon } 17320a7fb11cSYuval Mintz 17330518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 17340a7fb11cSYuval Mintz u8 connection_handle, 17350a7fb11cSYuval Mintz dma_addr_t addr, 17360a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 17370a7fb11cSYuval Mintz { 17380518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 17390a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 17400a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 17410a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 17420a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 17430a7fb11cSYuval Mintz unsigned long flags; 17440a7fb11cSYuval Mintz void *p_data; 17450a7fb11cSYuval Mintz int rc = 0; 17460a7fb11cSYuval Mintz 17470a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17480a7fb11cSYuval Mintz if (!p_ll2_conn) 17490a7fb11cSYuval Mintz return -EINVAL; 17500a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 175137110237SShai Malin if (!p_rx->set_prod_addr) 175237110237SShai Malin return -EIO; 17530a7fb11cSYuval Mintz 17540a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 17550a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 17560a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 17570a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 17580a7fb11cSYuval Mintz if (p_curp) { 17590a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 17600a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 17610a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 17620a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 17630a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 17640a7fb11cSYuval Mintz } 17650a7fb11cSYuval Mintz } 17660a7fb11cSYuval Mintz 1767*ee824f4bSOmkar Kulkarni /* If we're lacking entries, let's try to flush buffers to FW */ 17680a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 17690a7fb11cSYuval Mintz rc = -EBUSY; 17700a7fb11cSYuval Mintz p_curp = NULL; 17710a7fb11cSYuval Mintz goto out_notify; 17720a7fb11cSYuval Mintz } 17730a7fb11cSYuval Mintz 17740a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 17750a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 17760a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 17770a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 17780a7fb11cSYuval Mintz p_curp->cookie = cookie; 17790a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 17800a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 17810a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 17820a7fb11cSYuval Mintz 17830a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 17840a7fb11cSYuval Mintz if (!notify_fw) { 17850a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 17860a7fb11cSYuval Mintz goto out; 17870a7fb11cSYuval Mintz } 17880a7fb11cSYuval Mintz 17890a7fb11cSYuval Mintz out_notify: 17900a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 17910a7fb11cSYuval Mintz out: 17920a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 17930a7fb11cSYuval Mintz return rc; 17940a7fb11cSYuval Mintz } 17950a7fb11cSYuval Mintz 17960a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 17970a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 17980a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 17997c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 18000a7fb11cSYuval Mintz u8 notify_fw) 18010a7fb11cSYuval Mintz { 18020a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 18037c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 18047c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 18050a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 18060a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 18070a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 18080a7fb11cSYuval Mintz 18097c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 18107c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 18110a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 18120a7fb11cSYuval Mintz } 18130a7fb11cSYuval Mintz 1814be086e7cSMintz, Yuval static void 1815be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 18160a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 18170a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 18187c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 18190a7fb11cSYuval Mintz { 18200a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 18210a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 18220a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 18237c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 18247c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1825be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 18265ab90341SAlexander Lobakin u16 bitfield1; 18270a7fb11cSYuval Mintz 18287c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 18297c7973b2SMintz, Yuval : CORE_RROCE; 18307c7973b2SMintz, Yuval 183177caa792SMichal Kalderon switch (pkt->tx_dest) { 183277caa792SMichal Kalderon case QED_LL2_TX_DEST_NW: 183377caa792SMichal Kalderon tx_dest = CORE_TX_DEST_NW; 183477caa792SMichal Kalderon break; 183577caa792SMichal Kalderon case QED_LL2_TX_DEST_LB: 183677caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 183777caa792SMichal Kalderon break; 183877caa792SMichal Kalderon case QED_LL2_TX_DEST_DROP: 183977caa792SMichal Kalderon tx_dest = CORE_TX_DEST_DROP; 184077caa792SMichal Kalderon break; 184177caa792SMichal Kalderon default: 184277caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 184377caa792SMichal Kalderon break; 184477caa792SMichal Kalderon } 18457c7973b2SMintz, Yuval 18460a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 184789d65113SMichal Kalderon if (QED_IS_IWARP_PERSONALITY(p_hwfn) && 1848cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_OOO) { 184989d65113SMichal Kalderon start_bd->nw_vlan_or_lb_echo = 185089d65113SMichal Kalderon cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); 1851cac6f691SSudarsana Reddy Kalluru } else { 18527c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 1853cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 1854cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_FCOE) 1855cac6f691SSudarsana Reddy Kalluru pkt->remove_stag = true; 1856cac6f691SSudarsana Reddy Kalluru } 1857cac6f691SSudarsana Reddy Kalluru 18585ab90341SAlexander Lobakin bitfield1 = le16_to_cpu(start_bd->bitfield1); 18595ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, pkt->l4_hdr_offset_w); 18605ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_TX_DST, tx_dest); 18615ab90341SAlexander Lobakin start_bd->bitfield1 = cpu_to_le16(bitfield1); 18625ab90341SAlexander Lobakin 18637c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1864be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 18657c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1866be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 18676df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); 18686df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); 18696df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); 1870cac6f691SSudarsana Reddy Kalluru SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION, 1871cac6f691SSudarsana Reddy Kalluru !!(pkt->remove_stag)); 1872cac6f691SSudarsana Reddy Kalluru 1873be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 18747c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 18757c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 18760a7fb11cSYuval Mintz 18770a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 18780a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 18790a7fb11cSYuval 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", 18800a7fb11cSYuval Mintz p_ll2->queue_id, 18810a7fb11cSYuval Mintz p_ll2->cid, 188213c54771SMintz, Yuval p_ll2->input.conn_type, 18830a7fb11cSYuval Mintz prod_idx, 18847c7973b2SMintz, Yuval pkt->first_frag_len, 18857c7973b2SMintz, Yuval pkt->num_of_bds, 18860a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 18870a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 18880a7fb11cSYuval Mintz 18897c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 18900a7fb11cSYuval Mintz return; 18910a7fb11cSYuval Mintz 18920a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 18930a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 18947c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 18950a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 18960a7fb11cSYuval Mintz 18970a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1898be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 18990a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 19000a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 19010a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 19020a7fb11cSYuval Mintz } 19030a7fb11cSYuval Mintz } 19040a7fb11cSYuval Mintz 19050a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 19060a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 19070a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 19080a7fb11cSYuval Mintz { 19090a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 19100a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 19110a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 19120a7fb11cSYuval Mintz u16 bd_prod; 19130a7fb11cSYuval Mintz 19140a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 19150a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 19160a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 19170a7fb11cSYuval Mintz return; 19180a7fb11cSYuval Mintz 19190a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 19200a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 19210a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 19220a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 19230a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 19240a7fb11cSYuval Mintz 19250a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 19260a7fb11cSYuval Mintz if (!b_notify) 19270a7fb11cSYuval Mintz return; 19280a7fb11cSYuval Mintz 19290a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 19300a7fb11cSYuval Mintz 19310a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 19320a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 19330a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 19340a7fb11cSYuval Mintz if (!p_pkt) 19350a7fb11cSYuval Mintz break; 19360a7fb11cSYuval Mintz 1937b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 19380a7fb11cSYuval Mintz } 19390a7fb11cSYuval Mintz 1940b78d5400SAriel Elior p_tx->db_msg.spq_prod = cpu_to_le16(bd_prod); 19410a7fb11cSYuval Mintz 19420a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 19430a7fb11cSYuval Mintz wmb(); 19440a7fb11cSYuval Mintz 1945b78d5400SAriel Elior DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&p_tx->db_msg)); 19460a7fb11cSYuval Mintz 19470a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 19480a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 19490a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 19500a7fb11cSYuval Mintz p_ll2_conn->queue_id, 195113c54771SMintz, Yuval p_ll2_conn->cid, 1952b78d5400SAriel Elior p_ll2_conn->input.conn_type, p_tx->db_msg.spq_prod); 19530a7fb11cSYuval Mintz } 19540a7fb11cSYuval Mintz 19550518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 19560a7fb11cSYuval Mintz u8 connection_handle, 19577c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 19587c7973b2SMintz, Yuval bool notify_fw) 19590a7fb11cSYuval Mintz { 19600518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19610a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 19620a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19630a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 19640a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 19650a7fb11cSYuval Mintz unsigned long flags; 19660a7fb11cSYuval Mintz int rc = 0; 19670a7fb11cSYuval Mintz 19680a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 19690a7fb11cSYuval Mintz if (!p_ll2_conn) 19700a7fb11cSYuval Mintz return -EINVAL; 19710a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 19720a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 19730a7fb11cSYuval Mintz 1974f5823fe6SMichal Kalderon if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet) 19750a7fb11cSYuval Mintz return -EIO; 19760a7fb11cSYuval Mintz 19770a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 19780a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 19790a7fb11cSYuval Mintz rc = -EEXIST; 19800a7fb11cSYuval Mintz goto out; 19810a7fb11cSYuval Mintz } 19820a7fb11cSYuval Mintz 19830a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 19840a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 19850a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 19860a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 19877c7973b2SMintz, Yuval if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds) 19880a7fb11cSYuval Mintz p_curp = NULL; 19890a7fb11cSYuval Mintz 19900a7fb11cSYuval Mintz if (!p_curp) { 19910a7fb11cSYuval Mintz rc = -EBUSY; 19920a7fb11cSYuval Mintz goto out; 19930a7fb11cSYuval Mintz } 19940a7fb11cSYuval Mintz 19950a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 19967c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 19977c7973b2SMintz, Yuval 19987c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 19990a7fb11cSYuval Mintz 20000a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 20010a7fb11cSYuval Mintz 20020a7fb11cSYuval Mintz out: 20030a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 20040a7fb11cSYuval Mintz return rc; 20050a7fb11cSYuval Mintz } 20060a7fb11cSYuval Mintz 20070518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 20080a7fb11cSYuval Mintz u8 connection_handle, 20090a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 20100a7fb11cSYuval Mintz { 20110a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 20120518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20130a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20140a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 20150a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 20160a7fb11cSYuval Mintz unsigned long flags; 20170a7fb11cSYuval Mintz 20180a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 20190a7fb11cSYuval Mintz if (!p_ll2_conn) 20200a7fb11cSYuval Mintz return -EINVAL; 20210a7fb11cSYuval Mintz 20220a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 20230a7fb11cSYuval Mintz return -EINVAL; 20240a7fb11cSYuval Mintz 20250a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 20260a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 20270a7fb11cSYuval Mintz 20280a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 20290a7fb11cSYuval Mintz return -EINVAL; 20300a7fb11cSYuval Mintz 20310a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 20320a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 20330a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 20340a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 20350a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 20360a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 20370a7fb11cSYuval Mintz 20380a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 20390a7fb11cSYuval Mintz 20400a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 20410a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 20420a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 20430a7fb11cSYuval Mintz 20440a7fb11cSYuval Mintz return 0; 20450a7fb11cSYuval Mintz } 20460a7fb11cSYuval Mintz 20470518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 20480a7fb11cSYuval Mintz { 20490518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20500a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20510a7fb11cSYuval Mintz int rc = -EINVAL; 205215582962SRahul Verma struct qed_ptt *p_ptt; 205315582962SRahul Verma 205415582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 205515582962SRahul Verma if (!p_ptt) 205615582962SRahul Verma return -EAGAIN; 20570a7fb11cSYuval Mintz 20580a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 205915582962SRahul Verma if (!p_ll2_conn) { 206015582962SRahul Verma rc = -EINVAL; 206115582962SRahul Verma goto out; 206215582962SRahul Verma } 20630a7fb11cSYuval Mintz 20640a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 20650a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 20666a42b512SColin Ian King p_ll2_conn->tx_queue.b_cb_registered = false; 2067fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 20680a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 20690a7fb11cSYuval Mintz if (rc) 207015582962SRahul Verma goto out; 2071fc16f56bSMichal Kalderon 20720a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 2073fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 20740a7fb11cSYuval Mintz } 20750a7fb11cSYuval Mintz 20760a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 20776a42b512SColin Ian King p_ll2_conn->rx_queue.b_cb_registered = false; 2078fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 2079997af5dfSMichal Kalderon 2080997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) 2081997af5dfSMichal Kalderon qed_db_recovery_del(p_hwfn->cdev, 2082997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 2083997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data); 2084997af5dfSMichal Kalderon 20850a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 20860a7fb11cSYuval Mintz if (rc) 208715582962SRahul Verma goto out; 2088fc16f56bSMichal Kalderon 20890a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 2090fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 20910a7fb11cSYuval Mintz } 20920a7fb11cSYuval Mintz 2093526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 20941d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 20951d6cff4fSYuval Mintz 209613c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 2097cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 209879284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 209979284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 210079284adeSMichal Kalderon ETH_P_FCOE, 0); 210179284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 210279284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 210379284adeSMichal Kalderon ETH_P_FIP, 0); 21041e128c81SArun Easi } 21051e128c81SArun Easi 210615582962SRahul Verma out: 210715582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 21080a7fb11cSYuval Mintz return rc; 21090a7fb11cSYuval Mintz } 21100a7fb11cSYuval Mintz 211158de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 211258de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 211358de2898SMintz, Yuval { 211458de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 211558de2898SMintz, Yuval 2116526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 211758de2898SMintz, Yuval return; 211858de2898SMintz, Yuval 211958de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 212058de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 212158de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 212258de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 212358de2898SMintz, Yuval p_buffer->rx_buffer_size, 212458de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 212558de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 212658de2898SMintz, Yuval kfree(p_buffer); 212758de2898SMintz, Yuval } 212858de2898SMintz, Yuval } 21290518c12fSMichal Kalderon 21300518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 21310a7fb11cSYuval Mintz { 21320518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21330a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 21340a7fb11cSYuval Mintz 21350a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 21360a7fb11cSYuval Mintz if (!p_ll2_conn) 21370a7fb11cSYuval Mintz return; 21380a7fb11cSYuval Mintz 2139f5823fe6SMichal Kalderon kfree(p_ll2_conn->tx_queue.descq_mem); 21400a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 21410a7fb11cSYuval Mintz 21420a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 21430a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 21440a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 21450a7fb11cSYuval Mintz 21460a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 21470a7fb11cSYuval Mintz 21481d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 21491d6cff4fSYuval Mintz 21500a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 21510a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 21520a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 21530a7fb11cSYuval Mintz } 21540a7fb11cSYuval Mintz 21553587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 21560a7fb11cSYuval Mintz { 21570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 21580a7fb11cSYuval Mintz u8 i; 21590a7fb11cSYuval Mintz 21600a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 21610a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 21620a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 21630a7fb11cSYuval Mintz if (!p_ll2_connections) { 21640a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 21653587cb87STomer Tayar return -ENOMEM; 21660a7fb11cSYuval Mintz } 21670a7fb11cSYuval Mintz 21680a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 21690a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 21700a7fb11cSYuval Mintz 21713587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 21723587cb87STomer Tayar return 0; 21730a7fb11cSYuval Mintz } 21740a7fb11cSYuval Mintz 21753587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 21760a7fb11cSYuval Mintz { 21770a7fb11cSYuval Mintz int i; 21780a7fb11cSYuval Mintz 21790a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 21803587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 21810a7fb11cSYuval Mintz } 21820a7fb11cSYuval Mintz 21833587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 21840a7fb11cSYuval Mintz { 21853587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 21863587cb87STomer Tayar return; 21873587cb87STomer Tayar 21883587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 21893587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 21900a7fb11cSYuval Mintz } 21910a7fb11cSYuval Mintz 2192fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 2193fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 2194fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 2195fef1c3f7SMintz, Yuval { 2196fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 2197fef1c3f7SMintz, Yuval 2198fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 2199fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 2200fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 2201fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 2202fef1c3f7SMintz, Yuval sizeof(port_stats)); 2203fef1c3f7SMintz, Yuval 22047e50769cSMichal Kalderon p_stats->gsi_invalid_hdr += HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 22057e50769cSMichal Kalderon p_stats->gsi_invalid_pkt_length += 2206fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 22077e50769cSMichal Kalderon p_stats->gsi_unsupported_pkt_typ += 2208fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 22097e50769cSMichal Kalderon p_stats->gsi_crcchksm_error += 2210fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 2211fef1c3f7SMintz, Yuval } 2212fef1c3f7SMintz, Yuval 22130a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, 22140a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22150a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22160a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22170a7fb11cSYuval Mintz { 22180a7fb11cSYuval Mintz struct core_ll2_tstorm_per_queue_stat tstats; 22190a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 22200a7fb11cSYuval Mintz u32 tstats_addr; 22210a7fb11cSYuval Mintz 22220a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 22230a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 22240a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 22250a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 22260a7fb11cSYuval Mintz 22277e50769cSMichal Kalderon p_stats->packet_too_big_discard += 22280a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 22297e50769cSMichal Kalderon p_stats->no_buff_discard += HILO_64_REGPAIR(tstats.no_buff_discard); 22300a7fb11cSYuval Mintz } 22310a7fb11cSYuval Mintz 22320a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 22330a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22340a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22350a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22360a7fb11cSYuval Mintz { 22370a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 22380a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 22390a7fb11cSYuval Mintz u32 ustats_addr; 22400a7fb11cSYuval Mintz 22410a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 22420a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 22430a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 22440a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 22450a7fb11cSYuval Mintz 22467e50769cSMichal Kalderon p_stats->rcv_ucast_bytes += HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 22477e50769cSMichal Kalderon p_stats->rcv_mcast_bytes += HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 22487e50769cSMichal Kalderon p_stats->rcv_bcast_bytes += HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 22497e50769cSMichal Kalderon p_stats->rcv_ucast_pkts += HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 22507e50769cSMichal Kalderon p_stats->rcv_mcast_pkts += HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 22517e50769cSMichal Kalderon p_stats->rcv_bcast_pkts += HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 22520a7fb11cSYuval Mintz } 22530a7fb11cSYuval Mintz 22540a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 22550a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22560a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22570a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22580a7fb11cSYuval Mintz { 22590a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 22600a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 22610a7fb11cSYuval Mintz u32 pstats_addr; 22620a7fb11cSYuval Mintz 22630a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 22640a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 22650a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 22660a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 22670a7fb11cSYuval Mintz 22687e50769cSMichal Kalderon p_stats->sent_ucast_bytes += HILO_64_REGPAIR(pstats.sent_ucast_bytes); 22697e50769cSMichal Kalderon p_stats->sent_mcast_bytes += HILO_64_REGPAIR(pstats.sent_mcast_bytes); 22707e50769cSMichal Kalderon p_stats->sent_bcast_bytes += HILO_64_REGPAIR(pstats.sent_bcast_bytes); 22717e50769cSMichal Kalderon p_stats->sent_ucast_pkts += HILO_64_REGPAIR(pstats.sent_ucast_pkts); 22727e50769cSMichal Kalderon p_stats->sent_mcast_pkts += HILO_64_REGPAIR(pstats.sent_mcast_pkts); 22737e50769cSMichal Kalderon p_stats->sent_bcast_pkts += HILO_64_REGPAIR(pstats.sent_bcast_pkts); 22740a7fb11cSYuval Mintz } 22750a7fb11cSYuval Mintz 2276443473d2SMichal Kalderon static int __qed_ll2_get_stats(void *cxt, u8 connection_handle, 2277443473d2SMichal Kalderon struct qed_ll2_stats *p_stats) 22780a7fb11cSYuval Mintz { 22790518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 22800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 22810a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 22820a7fb11cSYuval Mintz 22830a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 22840a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 22850a7fb11cSYuval Mintz return -EINVAL; 22860a7fb11cSYuval Mintz 22870a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 22880a7fb11cSYuval Mintz 22890a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 22900a7fb11cSYuval Mintz if (!p_ptt) { 22910a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 22920a7fb11cSYuval Mintz return -EINVAL; 22930a7fb11cSYuval Mintz } 22940a7fb11cSYuval Mintz 2295fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2296fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 22977e50769cSMichal Kalderon 22980a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 22997e50769cSMichal Kalderon 23000a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 23017e50769cSMichal Kalderon 23020a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 23030a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 23040a7fb11cSYuval Mintz 23050a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 23067e50769cSMichal Kalderon 23070a7fb11cSYuval Mintz return 0; 23080a7fb11cSYuval Mintz } 23090a7fb11cSYuval Mintz 23107e50769cSMichal Kalderon int qed_ll2_get_stats(void *cxt, 23117e50769cSMichal Kalderon u8 connection_handle, struct qed_ll2_stats *p_stats) 23127e50769cSMichal Kalderon { 23137e50769cSMichal Kalderon memset(p_stats, 0, sizeof(*p_stats)); 23147e50769cSMichal Kalderon return __qed_ll2_get_stats(cxt, connection_handle, p_stats); 23157e50769cSMichal Kalderon } 23167e50769cSMichal Kalderon 23170518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 23180518c12fSMichal Kalderon u8 connection_handle, 23190518c12fSMichal Kalderon void *cookie, 23200518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 23210518c12fSMichal Kalderon bool b_last_packet) 23220518c12fSMichal Kalderon { 23230518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 23240518c12fSMichal Kalderon 23250518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 23260518c12fSMichal Kalderon } 23270518c12fSMichal Kalderon 23280a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 23290a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 23300a7fb11cSYuval Mintz void *cookie) 23310a7fb11cSYuval Mintz { 23320a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 23330a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 23340a7fb11cSYuval Mintz } 23350a7fb11cSYuval Mintz 23368ffe2df6SZou Wei static struct qed_ll2_cbs ll2_cbs = { 23370518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 23380518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 23390518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 23400518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 23410518c12fSMichal Kalderon }; 23420518c12fSMichal Kalderon 23437e50769cSMichal Kalderon static void qed_ll2_set_conn_data(struct qed_hwfn *p_hwfn, 234413c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 234513c54771SMintz, Yuval struct qed_ll2_params *params, 234613c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 23470518c12fSMichal Kalderon u8 *handle, bool lb) 234813c54771SMintz, Yuval { 234913c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 235013c54771SMintz, Yuval 235113c54771SMintz, Yuval data->input.conn_type = conn_type; 235213c54771SMintz, Yuval data->input.mtu = params->mtu; 235313c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 235413c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 235513c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 235613c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 235713c54771SMintz, Yuval data->p_connection_handle = handle; 23580518c12fSMichal Kalderon data->cbs = &ll2_cbs; 23597e50769cSMichal Kalderon ll2_cbs.cookie = p_hwfn; 23600518c12fSMichal Kalderon 236113c54771SMintz, Yuval if (lb) { 2362526d1d05SKalderon, Michal data->input.tx_tc = PKT_LB_TC; 236313c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 236413c54771SMintz, Yuval } else { 236513c54771SMintz, Yuval data->input.tx_tc = 0; 236613c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 236713c54771SMintz, Yuval } 236813c54771SMintz, Yuval } 236913c54771SMintz, Yuval 23707e50769cSMichal Kalderon static int qed_ll2_start_ooo(struct qed_hwfn *p_hwfn, 237113c54771SMintz, Yuval struct qed_ll2_params *params) 237213c54771SMintz, Yuval { 23737e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 237413c54771SMintz, Yuval struct qed_ll2_acquire_data data; 237513c54771SMintz, Yuval int rc; 237613c54771SMintz, Yuval 23777e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, 2378526d1d05SKalderon, Michal QED_LL2_TYPE_OOO, handle, true); 237913c54771SMintz, Yuval 23807e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 238113c54771SMintz, Yuval if (rc) { 23827e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 OOO connection\n"); 238313c54771SMintz, Yuval goto out; 238413c54771SMintz, Yuval } 238513c54771SMintz, Yuval 23867e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, *handle); 238713c54771SMintz, Yuval if (rc) { 23887e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 OOO connection\n"); 238913c54771SMintz, Yuval goto fail; 239013c54771SMintz, Yuval } 239113c54771SMintz, Yuval 239213c54771SMintz, Yuval return 0; 239313c54771SMintz, Yuval 239413c54771SMintz, Yuval fail: 23957e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 239613c54771SMintz, Yuval out: 239713c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 239813c54771SMintz, Yuval return rc; 239913c54771SMintz, Yuval } 240013c54771SMintz, Yuval 24017e50769cSMichal Kalderon static bool qed_ll2_is_storage_eng1(struct qed_dev *cdev) 24027e50769cSMichal Kalderon { 24037e50769cSMichal Kalderon return (QED_IS_FCOE_PERSONALITY(QED_LEADING_HWFN(cdev)) || 2404897e87a1SShai Malin QED_IS_ISCSI_PERSONALITY(QED_LEADING_HWFN(cdev)) || 2405897e87a1SShai Malin QED_IS_NVMETCP_PERSONALITY(QED_LEADING_HWFN(cdev))) && 24067e50769cSMichal Kalderon (QED_AFFIN_HWFN(cdev) != QED_LEADING_HWFN(cdev)); 24077e50769cSMichal Kalderon } 24087e50769cSMichal Kalderon 24097e50769cSMichal Kalderon static int __qed_ll2_stop(struct qed_hwfn *p_hwfn) 24107e50769cSMichal Kalderon { 24117e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 24127e50769cSMichal Kalderon int rc; 24137e50769cSMichal Kalderon 24147e50769cSMichal Kalderon rc = qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 24157e50769cSMichal Kalderon if (rc) 24167e50769cSMichal Kalderon DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 24177e50769cSMichal Kalderon 24187e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 24197e50769cSMichal Kalderon 24207e50769cSMichal Kalderon return rc; 24217e50769cSMichal Kalderon } 24227e50769cSMichal Kalderon 24237e50769cSMichal Kalderon static int qed_ll2_stop(struct qed_dev *cdev) 24247e50769cSMichal Kalderon { 24257e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 24267e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 24277e50769cSMichal Kalderon int rc = 0, rc2 = 0; 24287e50769cSMichal Kalderon 24297e50769cSMichal Kalderon if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 24307e50769cSMichal Kalderon return 0; 2431897e87a1SShai Malin if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 2432897e87a1SShai Malin qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address); 24337e50769cSMichal Kalderon 24347e50769cSMichal Kalderon qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address); 24357e50769cSMichal Kalderon eth_zero_addr(cdev->ll2_mac_address); 24367e50769cSMichal Kalderon 2437897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 24387e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 24397e50769cSMichal Kalderon 24407e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 24417e50769cSMichal Kalderon if (b_is_storage_eng1) { 24427e50769cSMichal Kalderon rc2 = __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 24437e50769cSMichal Kalderon if (rc2) 24447e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 24457e50769cSMichal Kalderon "Failed to stop LL2 on engine 0\n"); 24467e50769cSMichal Kalderon } 24477e50769cSMichal Kalderon 24487e50769cSMichal Kalderon rc = __qed_ll2_stop(p_hwfn); 24497e50769cSMichal Kalderon if (rc) 24507e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to stop LL2\n"); 24517e50769cSMichal Kalderon 24527e50769cSMichal Kalderon qed_ll2_kill_buffers(cdev); 24537e50769cSMichal Kalderon 24547e50769cSMichal Kalderon cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 24557e50769cSMichal Kalderon 24567e50769cSMichal Kalderon return rc | rc2; 24577e50769cSMichal Kalderon } 24587e50769cSMichal Kalderon 24597e50769cSMichal Kalderon static int __qed_ll2_start(struct qed_hwfn *p_hwfn, 24607e50769cSMichal Kalderon struct qed_ll2_params *params) 24610a7fb11cSYuval Mintz { 246288a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 24637e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 24640a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 246513c54771SMintz, Yuval struct qed_ll2_acquire_data data; 24667e50769cSMichal Kalderon int rc, rx_cnt; 24670518c12fSMichal Kalderon 24687e50769cSMichal Kalderon switch (p_hwfn->hw_info.personality) { 24691e128c81SArun Easi case QED_PCI_FCOE: 24701e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 24711e128c81SArun Easi break; 24720a7fb11cSYuval Mintz case QED_PCI_ISCSI: 2473897e87a1SShai Malin case QED_PCI_NVMETCP: 24741bd4f571SOmkar Kulkarni conn_type = QED_LL2_TYPE_TCP_ULP; 24750a7fb11cSYuval Mintz break; 24760a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 24770a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 24780a7fb11cSYuval Mintz break; 24790a7fb11cSYuval Mintz default: 24807e50769cSMichal Kalderon 24810a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 24820a7fb11cSYuval Mintz } 24830a7fb11cSYuval Mintz 24847e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, conn_type, 24850518c12fSMichal Kalderon &cdev->ll2->handle, false); 24860629a330SArnd Bergmann 24877e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 24880a7fb11cSYuval Mintz if (rc) { 24897e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 connection\n"); 24907e50769cSMichal Kalderon return rc; 24910a7fb11cSYuval Mintz } 24920a7fb11cSYuval Mintz 24937e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, cdev->ll2->handle); 24940a7fb11cSYuval Mintz if (rc) { 24957e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 connection\n"); 24967e50769cSMichal Kalderon goto release_conn; 24970a7fb11cSYuval Mintz } 24980a7fb11cSYuval Mintz 24990a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 25000a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 25017e50769cSMichal Kalderon rx_cnt = cdev->ll2->rx_cnt; 250288a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 25037e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, 25040a7fb11cSYuval Mintz cdev->ll2->handle, 25050a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 25060a7fb11cSYuval Mintz if (rc) { 25077e50769cSMichal Kalderon DP_INFO(p_hwfn, 25080a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 25090a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 25100a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 25110a7fb11cSYuval Mintz kfree(buffer->data); 25120a7fb11cSYuval Mintz list_del(&buffer->list); 25130a7fb11cSYuval Mintz kfree(buffer); 25140a7fb11cSYuval Mintz } else { 25157e50769cSMichal Kalderon rx_cnt++; 25160a7fb11cSYuval Mintz } 25170a7fb11cSYuval Mintz } 25180a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 25190a7fb11cSYuval Mintz 25207e50769cSMichal Kalderon if (rx_cnt == cdev->ll2->rx_cnt) { 25217e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed passing even a single Rx buffer\n"); 25227e50769cSMichal Kalderon goto terminate_conn; 25230a7fb11cSYuval Mintz } 25247e50769cSMichal Kalderon cdev->ll2->rx_cnt = rx_cnt; 25257e50769cSMichal Kalderon 25267e50769cSMichal Kalderon return 0; 25277e50769cSMichal Kalderon 25287e50769cSMichal Kalderon terminate_conn: 25297e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 25307e50769cSMichal Kalderon release_conn: 25317e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 25327e50769cSMichal Kalderon return rc; 25337e50769cSMichal Kalderon } 25347e50769cSMichal Kalderon 25357e50769cSMichal Kalderon static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 25367e50769cSMichal Kalderon { 25377e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 25387e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 25397e50769cSMichal Kalderon struct qed_ll2_buffer *buffer; 25407e50769cSMichal Kalderon int rx_num_desc, i, rc; 25410a7fb11cSYuval Mintz 25420a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 25437e50769cSMichal Kalderon DP_NOTICE(cdev, "Invalid Ethernet address\n"); 25447e50769cSMichal Kalderon return -EINVAL; 25450a7fb11cSYuval Mintz } 25460a7fb11cSYuval Mintz 25477e50769cSMichal Kalderon WARN_ON(!cdev->ll2->cbs); 25487e50769cSMichal Kalderon 25497e50769cSMichal Kalderon /* Initialize LL2 locks & lists */ 25507e50769cSMichal Kalderon INIT_LIST_HEAD(&cdev->ll2->list); 25517e50769cSMichal Kalderon spin_lock_init(&cdev->ll2->lock); 25527e50769cSMichal Kalderon 25537e50769cSMichal Kalderon cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 25547e50769cSMichal Kalderon L1_CACHE_BYTES + params->mtu; 25557e50769cSMichal Kalderon 25567e50769cSMichal Kalderon /* Allocate memory for LL2. 25577e50769cSMichal Kalderon * In CMT mode, in case of a storage PF which is affintized to engine 1, 25587e50769cSMichal Kalderon * LL2 is started also on engine 0 and thus we need twofold buffers. 25597e50769cSMichal Kalderon */ 25607e50769cSMichal Kalderon rx_num_desc = QED_LL2_RX_SIZE * (b_is_storage_eng1 ? 2 : 1); 25617e50769cSMichal Kalderon DP_INFO(cdev, "Allocating %d LL2 buffers of size %08x bytes\n", 25627e50769cSMichal Kalderon rx_num_desc, cdev->ll2->rx_size); 25637e50769cSMichal Kalderon for (i = 0; i < rx_num_desc; i++) { 25647e50769cSMichal Kalderon buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 25657e50769cSMichal Kalderon if (!buffer) { 25667e50769cSMichal Kalderon DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 25677e50769cSMichal Kalderon rc = -ENOMEM; 25687e50769cSMichal Kalderon goto err0; 25697e50769cSMichal Kalderon } 25707e50769cSMichal Kalderon 25717e50769cSMichal Kalderon rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 25727e50769cSMichal Kalderon &buffer->phys_addr); 25737e50769cSMichal Kalderon if (rc) { 25747e50769cSMichal Kalderon kfree(buffer); 25757e50769cSMichal Kalderon goto err0; 25767e50769cSMichal Kalderon } 25777e50769cSMichal Kalderon 25787e50769cSMichal Kalderon list_add_tail(&buffer->list, &cdev->ll2->list); 25797e50769cSMichal Kalderon } 25807e50769cSMichal Kalderon 25817e50769cSMichal Kalderon rc = __qed_ll2_start(p_hwfn, params); 25827e50769cSMichal Kalderon if (rc) { 25837e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start LL2\n"); 25847e50769cSMichal Kalderon goto err0; 25857e50769cSMichal Kalderon } 25867e50769cSMichal Kalderon 25877e50769cSMichal Kalderon /* In CMT mode, always need to start LL2 on engine 0 for a storage PF, 25887e50769cSMichal Kalderon * since broadcast/mutlicast packets are routed to engine 0. 25897e50769cSMichal Kalderon */ 25907e50769cSMichal Kalderon if (b_is_storage_eng1) { 25917e50769cSMichal Kalderon rc = __qed_ll2_start(QED_LEADING_HWFN(cdev), params); 25927e50769cSMichal Kalderon if (rc) { 25937e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 25947e50769cSMichal Kalderon "Failed to start LL2 on engine 0\n"); 25957e50769cSMichal Kalderon goto err1; 25967e50769cSMichal Kalderon } 25977e50769cSMichal Kalderon } 25987e50769cSMichal Kalderon 2599897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) { 26001d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 26017e50769cSMichal Kalderon rc = qed_ll2_start_ooo(p_hwfn, params); 26021d6cff4fSYuval Mintz if (rc) { 26037e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start OOO LL2\n"); 26047e50769cSMichal Kalderon goto err2; 26051d6cff4fSYuval Mintz } 26061d6cff4fSYuval Mintz } 26071d6cff4fSYuval Mintz 2608897e87a1SShai Malin if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn)) { 26097e50769cSMichal Kalderon rc = qed_llh_add_mac_filter(cdev, 0, params->ll2_mac_address); 26100a7fb11cSYuval Mintz if (rc) { 26117e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to add an LLH filter\n"); 26127e50769cSMichal Kalderon goto err3; 26130a7fb11cSYuval Mintz } 2614897e87a1SShai Malin } 2615897e87a1SShai Malin 26160a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 26177e50769cSMichal Kalderon 26180a7fb11cSYuval Mintz return 0; 26190a7fb11cSYuval Mintz 26207e50769cSMichal Kalderon err3: 2621897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 26227e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 26237e50769cSMichal Kalderon err2: 26247e50769cSMichal Kalderon if (b_is_storage_eng1) 26257e50769cSMichal Kalderon __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 26267e50769cSMichal Kalderon err1: 26277e50769cSMichal Kalderon __qed_ll2_stop(p_hwfn); 26287e50769cSMichal Kalderon err0: 26290a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 26300a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 26310a7fb11cSYuval Mintz return rc; 26320a7fb11cSYuval Mintz } 26330a7fb11cSYuval Mintz 2634cac6f691SSudarsana Reddy Kalluru static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, 2635cac6f691SSudarsana Reddy Kalluru unsigned long xmit_flags) 26360a7fb11cSYuval Mintz { 26377e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 26387c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 26390a7fb11cSYuval Mintz const skb_frag_t *frag; 26407c81626aSManish Chopra u8 flags = 0, nr_frags; 26410a7fb11cSYuval Mintz int rc = -EINVAL, i; 26420a7fb11cSYuval Mintz dma_addr_t mapping; 26430a7fb11cSYuval Mintz u16 vlan = 0; 26440a7fb11cSYuval Mintz 26450a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 2646ff81de73SColin Ian King DP_INFO(cdev, "Cannot transmit a checksummed packet\n"); 26470a7fb11cSYuval Mintz return -EINVAL; 26480a7fb11cSYuval Mintz } 26490a7fb11cSYuval Mintz 26507c81626aSManish Chopra /* Cache number of fragments from SKB since SKB may be freed by 26517c81626aSManish Chopra * the completion routine after calling qed_ll2_prepare_tx_packet() 26527c81626aSManish Chopra */ 26537c81626aSManish Chopra nr_frags = skb_shinfo(skb)->nr_frags; 26547c81626aSManish Chopra 26557c81626aSManish Chopra if (1 + nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 26560a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 26577c81626aSManish Chopra 1 + nr_frags); 26580a7fb11cSYuval Mintz return -EINVAL; 26590a7fb11cSYuval Mintz } 26600a7fb11cSYuval Mintz 26610a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 26620a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 26630a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 26640a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 26650a7fb11cSYuval Mintz return -EINVAL; 26660a7fb11cSYuval Mintz } 26670a7fb11cSYuval Mintz 26680a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 26690a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 26700a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2671be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 26720a7fb11cSYuval Mintz 26730a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 26740a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2675be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 26760a7fb11cSYuval Mintz } 26770a7fb11cSYuval Mintz 26787c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 26797c81626aSManish Chopra pkt.num_of_bds = 1 + nr_frags; 26807c7973b2SMintz, Yuval pkt.vlan = vlan; 26817c7973b2SMintz, Yuval pkt.bd_flags = flags; 26827c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 26837c7973b2SMintz, Yuval pkt.first_frag = mapping; 26847c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 26857c7973b2SMintz, Yuval pkt.cookie = skb; 2686cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) && 2687cac6f691SSudarsana Reddy Kalluru test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags)) 2688cac6f691SSudarsana Reddy Kalluru pkt.remove_stag = true; 26897c7973b2SMintz, Yuval 26907c81626aSManish Chopra /* qed_ll2_prepare_tx_packet() may actually send the packet if 26917c81626aSManish Chopra * there are no fragments in the skb and subsequently the completion 26927c81626aSManish Chopra * routine may run and free the SKB, so no dereferencing the SKB 26937c81626aSManish Chopra * beyond this point unless skb has any fragments. 26947c81626aSManish Chopra */ 26957e50769cSMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, cdev->ll2->handle, 26967c7973b2SMintz, Yuval &pkt, 1); 26970a7fb11cSYuval Mintz if (rc) 26980a7fb11cSYuval Mintz goto err; 26990a7fb11cSYuval Mintz 27007c81626aSManish Chopra for (i = 0; i < nr_frags; i++) { 27010a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 27020a7fb11cSYuval Mintz 2703d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2704d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2705d2201a21SMintz, Yuval 2706d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 27070a7fb11cSYuval Mintz DP_NOTICE(cdev, 27080a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 2709f07d4276SDan Carpenter rc = -ENOMEM; 27100a7fb11cSYuval Mintz goto err; 27110a7fb11cSYuval Mintz } 27120a7fb11cSYuval Mintz 27137e50769cSMichal Kalderon rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 27140a7fb11cSYuval Mintz cdev->ll2->handle, 27150a7fb11cSYuval Mintz mapping, 27160a7fb11cSYuval Mintz skb_frag_size(frag)); 27170a7fb11cSYuval Mintz 27180a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 27197e50769cSMichal Kalderon * we can't free memory, will need to wait for completion 27200a7fb11cSYuval Mintz */ 27210a7fb11cSYuval Mintz if (rc) 27220a7fb11cSYuval Mintz goto err2; 27230a7fb11cSYuval Mintz } 27240a7fb11cSYuval Mintz 27250a7fb11cSYuval Mintz return 0; 27260a7fb11cSYuval Mintz 27270a7fb11cSYuval Mintz err: 27280a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 27290a7fb11cSYuval Mintz err2: 27300a7fb11cSYuval Mintz return rc; 27310a7fb11cSYuval Mintz } 27320a7fb11cSYuval Mintz 27330a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 27340a7fb11cSYuval Mintz { 27357e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 27367e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 27377e50769cSMichal Kalderon int rc; 27387e50769cSMichal Kalderon 27390a7fb11cSYuval Mintz if (!cdev->ll2) 27400a7fb11cSYuval Mintz return -EINVAL; 27410a7fb11cSYuval Mintz 27427e50769cSMichal Kalderon rc = qed_ll2_get_stats(p_hwfn, cdev->ll2->handle, stats); 27437e50769cSMichal Kalderon if (rc) { 27447e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to get LL2 stats\n"); 27457e50769cSMichal Kalderon return rc; 27467e50769cSMichal Kalderon } 27477e50769cSMichal Kalderon 27487e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 27497e50769cSMichal Kalderon if (b_is_storage_eng1) { 27507e50769cSMichal Kalderon rc = __qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 27510a7fb11cSYuval Mintz cdev->ll2->handle, stats); 27527e50769cSMichal Kalderon if (rc) { 27537e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 27547e50769cSMichal Kalderon "Failed to get LL2 stats on engine 0\n"); 27557e50769cSMichal Kalderon return rc; 27567e50769cSMichal Kalderon } 27577e50769cSMichal Kalderon } 27587e50769cSMichal Kalderon 27597e50769cSMichal Kalderon return 0; 27600a7fb11cSYuval Mintz } 27610a7fb11cSYuval Mintz 27620a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 27630a7fb11cSYuval Mintz .start = &qed_ll2_start, 27640a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 27650a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 27660a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 27670a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 27680a7fb11cSYuval Mintz }; 27690a7fb11cSYuval Mintz 27700a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 27710a7fb11cSYuval Mintz { 27720a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 27730a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 27740a7fb11cSYuval Mintz } 27750a7fb11cSYuval Mintz 27760a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 27770a7fb11cSYuval Mintz { 27780a7fb11cSYuval Mintz kfree(cdev->ll2); 27790a7fb11cSYuval Mintz cdev->ll2 = NULL; 27800a7fb11cSYuval Mintz } 2781