10a7fb11cSYuval Mintz /* QLogic qed NIC Driver 2e8f1cb50SMintz, Yuval * Copyright (c) 2015-2017 QLogic Corporation 30a7fb11cSYuval Mintz * 4e8f1cb50SMintz, Yuval * This software is available to you under a choice of one of two 5e8f1cb50SMintz, Yuval * licenses. You may choose to be licensed under the terms of the GNU 6e8f1cb50SMintz, Yuval * General Public License (GPL) Version 2, available from the file 7e8f1cb50SMintz, Yuval * COPYING in the main directory of this source tree, or the 8e8f1cb50SMintz, Yuval * OpenIB.org BSD license below: 90a7fb11cSYuval Mintz * 10e8f1cb50SMintz, Yuval * Redistribution and use in source and binary forms, with or 11e8f1cb50SMintz, Yuval * without modification, are permitted provided that the following 12e8f1cb50SMintz, Yuval * conditions are met: 13e8f1cb50SMintz, Yuval * 14e8f1cb50SMintz, Yuval * - Redistributions of source code must retain the above 15e8f1cb50SMintz, Yuval * copyright notice, this list of conditions and the following 16e8f1cb50SMintz, Yuval * disclaimer. 17e8f1cb50SMintz, Yuval * 18e8f1cb50SMintz, Yuval * - Redistributions in binary form must reproduce the above 19e8f1cb50SMintz, Yuval * copyright notice, this list of conditions and the following 20e8f1cb50SMintz, Yuval * disclaimer in the documentation and /or other materials 21e8f1cb50SMintz, Yuval * provided with the distribution. 22e8f1cb50SMintz, Yuval * 23e8f1cb50SMintz, Yuval * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24e8f1cb50SMintz, Yuval * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25e8f1cb50SMintz, Yuval * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26e8f1cb50SMintz, Yuval * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27e8f1cb50SMintz, Yuval * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28e8f1cb50SMintz, Yuval * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29e8f1cb50SMintz, Yuval * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30e8f1cb50SMintz, Yuval * SOFTWARE. 310a7fb11cSYuval Mintz */ 320a7fb11cSYuval Mintz 330a7fb11cSYuval Mintz #include <linux/types.h> 340a7fb11cSYuval Mintz #include <asm/byteorder.h> 350a7fb11cSYuval Mintz #include <linux/dma-mapping.h> 360a7fb11cSYuval Mintz #include <linux/if_vlan.h> 370a7fb11cSYuval Mintz #include <linux/kernel.h> 380a7fb11cSYuval Mintz #include <linux/pci.h> 390a7fb11cSYuval Mintz #include <linux/slab.h> 400a7fb11cSYuval Mintz #include <linux/stddef.h> 410a7fb11cSYuval Mintz #include <linux/version.h> 420a7fb11cSYuval Mintz #include <linux/workqueue.h> 430a7fb11cSYuval Mintz #include <net/ipv6.h> 440a7fb11cSYuval Mintz #include <linux/bitops.h> 450a7fb11cSYuval Mintz #include <linux/delay.h> 460a7fb11cSYuval Mintz #include <linux/errno.h> 470a7fb11cSYuval Mintz #include <linux/etherdevice.h> 480a7fb11cSYuval Mintz #include <linux/io.h> 490a7fb11cSYuval Mintz #include <linux/list.h> 500a7fb11cSYuval Mintz #include <linux/mutex.h> 510a7fb11cSYuval Mintz #include <linux/spinlock.h> 520a7fb11cSYuval Mintz #include <linux/string.h> 530a7fb11cSYuval Mintz #include <linux/qed/qed_ll2_if.h> 540a7fb11cSYuval Mintz #include "qed.h" 550a7fb11cSYuval Mintz #include "qed_cxt.h" 560a7fb11cSYuval Mintz #include "qed_dev_api.h" 570a7fb11cSYuval Mintz #include "qed_hsi.h" 580a7fb11cSYuval Mintz #include "qed_hw.h" 590a7fb11cSYuval Mintz #include "qed_int.h" 600a7fb11cSYuval Mintz #include "qed_ll2.h" 610a7fb11cSYuval Mintz #include "qed_mcp.h" 621d6cff4fSYuval Mintz #include "qed_ooo.h" 630a7fb11cSYuval Mintz #include "qed_reg_addr.h" 640a7fb11cSYuval Mintz #include "qed_sp.h" 650189efb8SYuval Mintz #include "qed_roce.h" 660a7fb11cSYuval Mintz 670a7fb11cSYuval Mintz #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registred) 680a7fb11cSYuval Mintz #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registred) 690a7fb11cSYuval Mintz 700a7fb11cSYuval Mintz #define QED_LL2_TX_SIZE (256) 710a7fb11cSYuval Mintz #define QED_LL2_RX_SIZE (4096) 720a7fb11cSYuval Mintz 730a7fb11cSYuval Mintz struct qed_cb_ll2_info { 740a7fb11cSYuval Mintz int rx_cnt; 750a7fb11cSYuval Mintz u32 rx_size; 760a7fb11cSYuval Mintz u8 handle; 770a7fb11cSYuval Mintz bool frags_mapped; 780a7fb11cSYuval Mintz 790a7fb11cSYuval Mintz /* Lock protecting LL2 buffer lists in sleepless context */ 800a7fb11cSYuval Mintz spinlock_t lock; 810a7fb11cSYuval Mintz struct list_head list; 820a7fb11cSYuval Mintz 830a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *cbs; 840a7fb11cSYuval Mintz void *cb_cookie; 850a7fb11cSYuval Mintz }; 860a7fb11cSYuval Mintz 870a7fb11cSYuval Mintz struct qed_ll2_buffer { 880a7fb11cSYuval Mintz struct list_head list; 890a7fb11cSYuval Mintz void *data; 900a7fb11cSYuval Mintz dma_addr_t phys_addr; 910a7fb11cSYuval Mintz }; 920a7fb11cSYuval Mintz 930a7fb11cSYuval Mintz static void qed_ll2b_complete_tx_packet(struct qed_hwfn *p_hwfn, 940a7fb11cSYuval Mintz u8 connection_handle, 950a7fb11cSYuval Mintz void *cookie, 960a7fb11cSYuval Mintz dma_addr_t first_frag_addr, 970a7fb11cSYuval Mintz bool b_last_fragment, 980a7fb11cSYuval Mintz bool b_last_packet) 990a7fb11cSYuval Mintz { 1000a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1010a7fb11cSYuval Mintz struct sk_buff *skb = cookie; 1020a7fb11cSYuval Mintz 1030a7fb11cSYuval Mintz /* All we need to do is release the mapping */ 1040a7fb11cSYuval Mintz dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, 1050a7fb11cSYuval Mintz skb_headlen(skb), DMA_TO_DEVICE); 1060a7fb11cSYuval Mintz 1070a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) 1080a7fb11cSYuval Mintz cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, 1090a7fb11cSYuval Mintz b_last_fragment); 1100a7fb11cSYuval Mintz 1110a7fb11cSYuval Mintz if (cdev->ll2->frags_mapped) 1120a7fb11cSYuval Mintz /* Case where mapped frags were received, need to 1130a7fb11cSYuval Mintz * free skb with nr_frags marked as 0 1140a7fb11cSYuval Mintz */ 1150a7fb11cSYuval Mintz skb_shinfo(skb)->nr_frags = 0; 1160a7fb11cSYuval Mintz 1170a7fb11cSYuval Mintz dev_kfree_skb_any(skb); 1180a7fb11cSYuval Mintz } 1190a7fb11cSYuval Mintz 1200a7fb11cSYuval Mintz static int qed_ll2_alloc_buffer(struct qed_dev *cdev, 1210a7fb11cSYuval Mintz u8 **data, dma_addr_t *phys_addr) 1220a7fb11cSYuval Mintz { 1230a7fb11cSYuval Mintz *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); 1240a7fb11cSYuval Mintz if (!(*data)) { 1250a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); 1260a7fb11cSYuval Mintz return -ENOMEM; 1270a7fb11cSYuval Mintz } 1280a7fb11cSYuval Mintz 1290a7fb11cSYuval Mintz *phys_addr = dma_map_single(&cdev->pdev->dev, 1300a7fb11cSYuval Mintz ((*data) + NET_SKB_PAD), 1310a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1320a7fb11cSYuval Mintz if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { 1330a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to map LL2 buffer data\n"); 1340a7fb11cSYuval Mintz kfree((*data)); 1350a7fb11cSYuval Mintz return -ENOMEM; 1360a7fb11cSYuval Mintz } 1370a7fb11cSYuval Mintz 1380a7fb11cSYuval Mintz return 0; 1390a7fb11cSYuval Mintz } 1400a7fb11cSYuval Mintz 1410a7fb11cSYuval Mintz static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, 1420a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer) 1430a7fb11cSYuval Mintz { 1440a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 1450a7fb11cSYuval Mintz 1460a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 1470a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1480a7fb11cSYuval Mintz kfree(buffer->data); 1490a7fb11cSYuval Mintz list_del(&buffer->list); 1500a7fb11cSYuval Mintz 1510a7fb11cSYuval Mintz cdev->ll2->rx_cnt--; 1520a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) 1530a7fb11cSYuval Mintz DP_INFO(cdev, "All LL2 entries were removed\n"); 1540a7fb11cSYuval Mintz 1550a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 1560a7fb11cSYuval Mintz 1570a7fb11cSYuval Mintz return 0; 1580a7fb11cSYuval Mintz } 1590a7fb11cSYuval Mintz 1600a7fb11cSYuval Mintz static void qed_ll2_kill_buffers(struct qed_dev *cdev) 1610a7fb11cSYuval Mintz { 1620a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer, *tmp_buffer; 1630a7fb11cSYuval Mintz 1640a7fb11cSYuval Mintz list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) 1650a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 1660a7fb11cSYuval Mintz } 1670a7fb11cSYuval Mintz 1688c93beafSYuval Mintz static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn, 1690a7fb11cSYuval Mintz u8 connection_handle, 1700a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt, 1710a7fb11cSYuval Mintz struct core_rx_fast_path_cqe *p_cqe, 1720a7fb11cSYuval Mintz bool b_last_packet) 1730a7fb11cSYuval Mintz { 1740a7fb11cSYuval Mintz u16 packet_length = le16_to_cpu(p_cqe->packet_length); 1750a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer = p_pkt->cookie; 1760a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1770a7fb11cSYuval Mintz u16 vlan = le16_to_cpu(p_cqe->vlan); 1780a7fb11cSYuval Mintz u32 opaque_data_0, opaque_data_1; 1790a7fb11cSYuval Mintz u8 pad = p_cqe->placement_offset; 1800a7fb11cSYuval Mintz dma_addr_t new_phys_addr; 1810a7fb11cSYuval Mintz struct sk_buff *skb; 1820a7fb11cSYuval Mintz bool reuse = false; 1830a7fb11cSYuval Mintz int rc = -EINVAL; 1840a7fb11cSYuval Mintz u8 *new_data; 1850a7fb11cSYuval Mintz 1860a7fb11cSYuval Mintz opaque_data_0 = le32_to_cpu(p_cqe->opaque_data.data[0]); 1870a7fb11cSYuval Mintz opaque_data_1 = le32_to_cpu(p_cqe->opaque_data.data[1]); 1880a7fb11cSYuval Mintz 1890a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 1900a7fb11cSYuval Mintz (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), 1910a7fb11cSYuval 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", 1920a7fb11cSYuval Mintz (u64)p_pkt->rx_buf_addr, pad, packet_length, 1930a7fb11cSYuval Mintz le16_to_cpu(p_cqe->parse_flags.flags), vlan, 1940a7fb11cSYuval Mintz opaque_data_0, opaque_data_1); 1950a7fb11cSYuval Mintz 1960a7fb11cSYuval Mintz if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { 1970a7fb11cSYuval Mintz print_hex_dump(KERN_INFO, "", 1980a7fb11cSYuval Mintz DUMP_PREFIX_OFFSET, 16, 1, 1990a7fb11cSYuval Mintz buffer->data, packet_length, false); 2000a7fb11cSYuval Mintz } 2010a7fb11cSYuval Mintz 2020a7fb11cSYuval Mintz /* Determine if data is valid */ 2030a7fb11cSYuval Mintz if (packet_length < ETH_HLEN) 2040a7fb11cSYuval Mintz reuse = true; 2050a7fb11cSYuval Mintz 2060a7fb11cSYuval Mintz /* Allocate a replacement for buffer; Reuse upon failure */ 2070a7fb11cSYuval Mintz if (!reuse) 2080a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, 2090a7fb11cSYuval Mintz &new_phys_addr); 2100a7fb11cSYuval Mintz 2110a7fb11cSYuval Mintz /* If need to reuse or there's no replacement buffer, repost this */ 2120a7fb11cSYuval Mintz if (rc) 2130a7fb11cSYuval Mintz goto out_post; 2140a7fb11cSYuval Mintz 2150a7fb11cSYuval Mintz skb = build_skb(buffer->data, 0); 2160a7fb11cSYuval Mintz if (!skb) { 2170a7fb11cSYuval Mintz rc = -ENOMEM; 2180a7fb11cSYuval Mintz goto out_post; 2190a7fb11cSYuval Mintz } 2200a7fb11cSYuval Mintz 2210a7fb11cSYuval Mintz pad += NET_SKB_PAD; 2220a7fb11cSYuval Mintz skb_reserve(skb, pad); 2230a7fb11cSYuval Mintz skb_put(skb, packet_length); 2240a7fb11cSYuval Mintz skb_checksum_none_assert(skb); 2250a7fb11cSYuval Mintz 2260a7fb11cSYuval Mintz /* Get parital ethernet information instead of eth_type_trans(), 2270a7fb11cSYuval Mintz * Since we don't have an associated net_device. 2280a7fb11cSYuval Mintz */ 2290a7fb11cSYuval Mintz skb_reset_mac_header(skb); 2300a7fb11cSYuval Mintz skb->protocol = eth_hdr(skb)->h_proto; 2310a7fb11cSYuval Mintz 2320a7fb11cSYuval Mintz /* Pass SKB onward */ 2330a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { 2340a7fb11cSYuval Mintz if (vlan) 2350a7fb11cSYuval Mintz __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); 2360a7fb11cSYuval Mintz cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, 2370a7fb11cSYuval Mintz opaque_data_0, opaque_data_1); 2380a7fb11cSYuval Mintz } 2390a7fb11cSYuval Mintz 2400a7fb11cSYuval Mintz /* Update Buffer information and update FW producer */ 2410a7fb11cSYuval Mintz buffer->data = new_data; 2420a7fb11cSYuval Mintz buffer->phys_addr = new_phys_addr; 2430a7fb11cSYuval Mintz 2440a7fb11cSYuval Mintz out_post: 2450a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle, 2460a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2470a7fb11cSYuval Mintz 2480a7fb11cSYuval Mintz if (rc) 2490a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 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 bool b_lock, 2550a7fb11cSYuval Mintz bool b_only_active) 2560a7fb11cSYuval Mintz { 2570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2580a7fb11cSYuval Mintz 2590a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2600a7fb11cSYuval Mintz return NULL; 2610a7fb11cSYuval Mintz 2620a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2630a7fb11cSYuval Mintz return NULL; 2640a7fb11cSYuval Mintz 2650a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2660a7fb11cSYuval Mintz 2670a7fb11cSYuval Mintz if (b_only_active) { 2680a7fb11cSYuval Mintz if (b_lock) 2690a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2700a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2710a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2720a7fb11cSYuval Mintz if (b_lock) 2730a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2740a7fb11cSYuval Mintz } else { 2750a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2760a7fb11cSYuval Mintz } 2770a7fb11cSYuval Mintz 2780a7fb11cSYuval Mintz return p_ret; 2790a7fb11cSYuval Mintz } 2800a7fb11cSYuval Mintz 2810a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2820a7fb11cSYuval Mintz u8 connection_handle) 2830a7fb11cSYuval Mintz { 2840a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2850a7fb11cSYuval Mintz } 2860a7fb11cSYuval Mintz 2870a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2880a7fb11cSYuval Mintz u8 connection_handle) 2890a7fb11cSYuval Mintz { 2900a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2910a7fb11cSYuval Mintz } 2920a7fb11cSYuval Mintz 2930a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2940a7fb11cSYuval Mintz *p_hwfn, 2950a7fb11cSYuval Mintz u8 connection_handle) 2960a7fb11cSYuval Mintz { 2970a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2980a7fb11cSYuval Mintz } 2990a7fb11cSYuval Mintz 3000a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 3010a7fb11cSYuval Mintz { 3020a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 3030a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 3040a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 3050a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 306abd49676SRam Amrani dma_addr_t tx_frag; 3070a7fb11cSYuval Mintz 3080a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 3090a7fb11cSYuval Mintz if (!p_ll2_conn) 3100a7fb11cSYuval Mintz return; 3110a7fb11cSYuval Mintz 3120a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 3130a7fb11cSYuval Mintz 3140a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 3150a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3160a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3170a7fb11cSYuval Mintz if (!p_pkt) 3180a7fb11cSYuval Mintz break; 3190a7fb11cSYuval Mintz 3200a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3210a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 3220a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3230629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) { 3241d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 3251d6cff4fSYuval Mintz 3261d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3271d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3281d6cff4fSYuval Mintz p_buffer); 3291d6cff4fSYuval Mintz } else { 3300a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3310a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3321d6cff4fSYuval Mintz b_last_frag = 3331d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 334abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3350629a330SArnd Bergmann if (p_ll2_conn->conn.gsi_enable) 336abd49676SRam Amrani qed_ll2b_release_tx_gsi_packet(p_hwfn, 3371d6cff4fSYuval Mintz p_ll2_conn-> 3381d6cff4fSYuval Mintz my_id, 3390a7fb11cSYuval Mintz p_pkt->cookie, 340abd49676SRam Amrani tx_frag, 341abd49676SRam Amrani b_last_frag, 342abd49676SRam Amrani b_last_packet); 343abd49676SRam Amrani else 344abd49676SRam Amrani qed_ll2b_complete_tx_packet(p_hwfn, 345abd49676SRam Amrani p_ll2_conn->my_id, 346abd49676SRam Amrani p_pkt->cookie, 347abd49676SRam Amrani tx_frag, 348abd49676SRam Amrani b_last_frag, 349abd49676SRam Amrani b_last_packet); 3501d6cff4fSYuval Mintz } 3510a7fb11cSYuval Mintz } 3520a7fb11cSYuval Mintz } 3530a7fb11cSYuval Mintz 3540a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3550a7fb11cSYuval Mintz { 3560a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3570a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3580a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3590a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3600a7fb11cSYuval Mintz bool b_last_frag = false; 3610a7fb11cSYuval Mintz unsigned long flags; 362abd49676SRam Amrani dma_addr_t tx_frag; 3630a7fb11cSYuval Mintz int rc = -EINVAL; 3640a7fb11cSYuval Mintz 3650a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3660a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3670a7fb11cSYuval Mintz rc = -EBUSY; 3680a7fb11cSYuval Mintz goto out; 3690a7fb11cSYuval Mintz } 3700a7fb11cSYuval Mintz 3710a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3720a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3730a7fb11cSYuval Mintz while (num_bds) { 3740a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3750a7fb11cSYuval Mintz goto out; 3760a7fb11cSYuval Mintz 3770a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3780a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3790a7fb11cSYuval Mintz if (!p_pkt) 3800a7fb11cSYuval Mintz goto out; 3810a7fb11cSYuval Mintz 3820a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3830a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3840a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3850a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3860a7fb11cSYuval Mintz 3870a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3880a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3890a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3900a7fb11cSYuval Mintz goto out; 3910a7fb11cSYuval Mintz } 3920a7fb11cSYuval Mintz 3930a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3940a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3950a7fb11cSYuval Mintz while (num_bds_in_packet--) 3960a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3970a7fb11cSYuval Mintz 3980a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3990a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 4000a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 4010a7fb11cSYuval Mintz 4020a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 403abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 4040629a330SArnd Bergmann if (p_ll2_conn->conn.gsi_enable) 405abd49676SRam Amrani qed_ll2b_complete_tx_gsi_packet(p_hwfn, 406abd49676SRam Amrani p_ll2_conn->my_id, 407abd49676SRam Amrani p_pkt->cookie, 408abd49676SRam Amrani tx_frag, 409abd49676SRam Amrani b_last_frag, !num_bds); 410abd49676SRam Amrani else 4110a7fb11cSYuval Mintz qed_ll2b_complete_tx_packet(p_hwfn, 4120a7fb11cSYuval Mintz p_ll2_conn->my_id, 4130a7fb11cSYuval Mintz p_pkt->cookie, 414abd49676SRam Amrani tx_frag, 4150a7fb11cSYuval Mintz b_last_frag, !num_bds); 4160a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 4170a7fb11cSYuval Mintz } 4180a7fb11cSYuval Mintz 4190a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 4200a7fb11cSYuval Mintz rc = 0; 4210a7fb11cSYuval Mintz out: 4220a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 4230a7fb11cSYuval Mintz return rc; 4240a7fb11cSYuval Mintz } 4250a7fb11cSYuval Mintz 426abd49676SRam Amrani static int 427abd49676SRam Amrani qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn, 428abd49676SRam Amrani struct qed_ll2_info *p_ll2_info, 429abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 430abd49676SRam Amrani unsigned long lock_flags, bool b_last_cqe) 431abd49676SRam Amrani { 432abd49676SRam Amrani struct qed_ll2_rx_queue *p_rx = &p_ll2_info->rx_queue; 433abd49676SRam Amrani struct qed_ll2_rx_packet *p_pkt = NULL; 434abd49676SRam Amrani u16 packet_length, parse_flags, vlan; 435abd49676SRam Amrani u32 src_mac_addrhi; 436abd49676SRam Amrani u16 src_mac_addrlo; 437abd49676SRam Amrani 438abd49676SRam Amrani if (!list_empty(&p_rx->active_descq)) 439abd49676SRam Amrani p_pkt = list_first_entry(&p_rx->active_descq, 440abd49676SRam Amrani struct qed_ll2_rx_packet, list_entry); 441abd49676SRam Amrani if (!p_pkt) { 442abd49676SRam Amrani DP_NOTICE(p_hwfn, 443abd49676SRam Amrani "GSI Rx completion but active_descq is empty\n"); 444abd49676SRam Amrani return -EIO; 445abd49676SRam Amrani } 446abd49676SRam Amrani 447abd49676SRam Amrani list_del(&p_pkt->list_entry); 448abd49676SRam Amrani parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 449abd49676SRam Amrani packet_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 450abd49676SRam Amrani vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 451abd49676SRam Amrani src_mac_addrhi = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 452abd49676SRam Amrani src_mac_addrlo = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 453abd49676SRam Amrani if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 454abd49676SRam Amrani DP_NOTICE(p_hwfn, 455abd49676SRam Amrani "Mismatch between active_descq and the LL2 Rx chain\n"); 456abd49676SRam Amrani list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 457abd49676SRam Amrani 458abd49676SRam Amrani spin_unlock_irqrestore(&p_rx->lock, lock_flags); 459abd49676SRam Amrani qed_ll2b_complete_rx_gsi_packet(p_hwfn, 460abd49676SRam Amrani p_ll2_info->my_id, 461abd49676SRam Amrani p_pkt->cookie, 462abd49676SRam Amrani p_pkt->rx_buf_addr, 463abd49676SRam Amrani packet_length, 464abd49676SRam Amrani p_cqe->rx_cqe_gsi.data_length_error, 465abd49676SRam Amrani parse_flags, 466abd49676SRam Amrani vlan, 467abd49676SRam Amrani src_mac_addrhi, 468abd49676SRam Amrani src_mac_addrlo, b_last_cqe); 469abd49676SRam Amrani spin_lock_irqsave(&p_rx->lock, lock_flags); 470abd49676SRam Amrani 471abd49676SRam Amrani return 0; 472abd49676SRam Amrani } 473abd49676SRam Amrani 4740a7fb11cSYuval Mintz static int qed_ll2_rxq_completion_reg(struct qed_hwfn *p_hwfn, 4750a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4760a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 4770a7fb11cSYuval Mintz unsigned long lock_flags, 4780a7fb11cSYuval Mintz bool b_last_cqe) 4790a7fb11cSYuval Mintz { 4800a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4810a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 4820a7fb11cSYuval Mintz 4830a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4840a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4850a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4860a7fb11cSYuval Mintz if (!p_pkt) { 4870a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4880a7fb11cSYuval Mintz "LL2 Rx completion but active_descq is empty\n"); 4890a7fb11cSYuval Mintz return -EIO; 4900a7fb11cSYuval Mintz } 4910a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4920a7fb11cSYuval Mintz 4930a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 4940a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4950a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 4960a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 4970a7fb11cSYuval Mintz 4980a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, lock_flags); 4990a7fb11cSYuval Mintz qed_ll2b_complete_rx_packet(p_hwfn, p_ll2_conn->my_id, 5000a7fb11cSYuval Mintz p_pkt, &p_cqe->rx_cqe_fp, b_last_cqe); 5010a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, lock_flags); 5020a7fb11cSYuval Mintz 5030a7fb11cSYuval Mintz return 0; 5040a7fb11cSYuval Mintz } 5050a7fb11cSYuval Mintz 5060a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 5070a7fb11cSYuval Mintz { 5080a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = cookie; 5090a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5100a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5110a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5120a7fb11cSYuval Mintz unsigned long flags = 0; 5130a7fb11cSYuval Mintz int rc = 0; 5140a7fb11cSYuval Mintz 5150a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 5160a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5170a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5180a7fb11cSYuval Mintz 5190a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5200a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5210a7fb11cSYuval Mintz 5220a7fb11cSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 5230a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5240a7fb11cSYuval Mintz 5250a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5260a7fb11cSYuval Mintz QED_MSG_LL2, 5270a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5280a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5290a7fb11cSYuval Mintz 5300a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5310a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5320a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n"); 5330a7fb11cSYuval Mintz rc = -EINVAL; 5340a7fb11cSYuval Mintz break; 535abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 536abd49676SRam Amrani rc = qed_ll2_rxq_completion_gsi(p_hwfn, p_ll2_conn, 537abd49676SRam Amrani cqe, flags, b_last_cqe); 538abd49676SRam Amrani break; 5390a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 5400a7fb11cSYuval Mintz rc = qed_ll2_rxq_completion_reg(p_hwfn, p_ll2_conn, 5410a7fb11cSYuval Mintz cqe, flags, b_last_cqe); 5420a7fb11cSYuval Mintz break; 5430a7fb11cSYuval Mintz default: 5440a7fb11cSYuval Mintz rc = -EIO; 5450a7fb11cSYuval Mintz } 5460a7fb11cSYuval Mintz } 5470a7fb11cSYuval Mintz 5480a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5490a7fb11cSYuval Mintz return rc; 5500a7fb11cSYuval Mintz } 5510a7fb11cSYuval Mintz 5528c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5530a7fb11cSYuval Mintz { 5540a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5550a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5560a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5570a7fb11cSYuval Mintz 5580a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5590a7fb11cSYuval Mintz if (!p_ll2_conn) 5600a7fb11cSYuval Mintz return; 5610a7fb11cSYuval Mintz 5620a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5630a7fb11cSYuval Mintz 5640a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5650a7fb11cSYuval Mintz dma_addr_t rx_buf_addr; 5660a7fb11cSYuval Mintz void *cookie; 5670a7fb11cSYuval Mintz bool b_last; 5680a7fb11cSYuval Mintz 5690a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5700a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5710a7fb11cSYuval Mintz if (!p_pkt) 5720a7fb11cSYuval Mintz break; 5730a7fb11cSYuval Mintz 574b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5750a7fb11cSYuval Mintz 5760629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) { 5771d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5781d6cff4fSYuval Mintz 5791d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5801d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5811d6cff4fSYuval Mintz p_buffer); 5821d6cff4fSYuval Mintz } else { 5830a7fb11cSYuval Mintz rx_buf_addr = p_pkt->rx_buf_addr; 5840a7fb11cSYuval Mintz cookie = p_pkt->cookie; 5850a7fb11cSYuval Mintz 5860a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 5870a7fb11cSYuval Mintz } 5880a7fb11cSYuval Mintz } 5891d6cff4fSYuval Mintz } 5901d6cff4fSYuval Mintz 5911d6cff4fSYuval Mintz #if IS_ENABLED(CONFIG_QED_ISCSI) 5921d6cff4fSYuval Mintz static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags) 5931d6cff4fSYuval Mintz { 5941d6cff4fSYuval Mintz u8 bd_flags = 0; 5951d6cff4fSYuval Mintz 5961d6cff4fSYuval Mintz if (GET_FIELD(parse_flags, PARSING_AND_ERR_FLAGS_TAG8021QEXIST)) 5971d6cff4fSYuval Mintz SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_VLAN_INSERTION, 1); 5981d6cff4fSYuval Mintz 5991d6cff4fSYuval Mintz return bd_flags; 6001d6cff4fSYuval Mintz } 6011d6cff4fSYuval Mintz 6021d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6031d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6041d6cff4fSYuval Mintz { 6051d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6061d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6071d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6081d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6091d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6101d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6111d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6121d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 6131d6cff4fSYuval Mintz u8 placement_offset = 0; 6141d6cff4fSYuval Mintz u8 cqe_type; 6151d6cff4fSYuval Mintz 6161d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6171d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6181d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6191d6cff4fSYuval Mintz return 0; 6201d6cff4fSYuval Mintz 6211d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6221d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6231d6cff4fSYuval Mintz 6241d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6251d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6261d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6271d6cff4fSYuval Mintz 6281d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 6291d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6301d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6311d6cff4fSYuval Mintz cqe_type); 6321d6cff4fSYuval Mintz return -EINVAL; 6331d6cff4fSYuval Mintz } 6341d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6351d6cff4fSYuval Mintz 6361d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6371d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6381d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6391d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6401d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6411d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6421d6cff4fSYuval Mintz iscsi_ooo); 6431d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6441d6cff4fSYuval Mintz 6451d6cff4fSYuval Mintz /* Process delete isle first */ 6461d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6471d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6481d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6491d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6501d6cff4fSYuval Mintz 6511d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6521d6cff4fSYuval Mintz continue; 6531d6cff4fSYuval Mintz 6541d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6551d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6561d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6571d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6581d6cff4fSYuval Mintz ); 6591d6cff4fSYuval Mintz return -EIO; 6601d6cff4fSYuval Mintz } 6611d6cff4fSYuval Mintz 6621d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6631d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6641d6cff4fSYuval Mintz 6651d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 6661d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 6671d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 6681d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 6691d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 6701d6cff4fSYuval Mintz if (!p_pkt) { 6711d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6721d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 6731d6cff4fSYuval Mintz return -EIO; 6741d6cff4fSYuval Mintz } 6751d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 6761d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 6771d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 6781d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 6791d6cff4fSYuval Mintz p_buffer->vlan = vlan; 6801d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 6811d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 6821d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 6831d6cff4fSYuval Mintz 6841d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 6851d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 6861d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 6871d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6881d6cff4fSYuval Mintz cid, 6891d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6901d6cff4fSYuval Mintz p_buffer); 6911d6cff4fSYuval Mintz break; 6921d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 6931d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 6941d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6951d6cff4fSYuval Mintz cid, 6961d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6971d6cff4fSYuval Mintz p_buffer, 6981d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 6991d6cff4fSYuval Mintz break; 7001d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 7011d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7021d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7031d6cff4fSYuval Mintz cid, 7041d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7051d6cff4fSYuval Mintz p_buffer, 7061d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7071d6cff4fSYuval Mintz break; 7081d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7091d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7101d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7111d6cff4fSYuval Mintz cid, 7121d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 7131d6cff4fSYuval Mintz 1, 7141d6cff4fSYuval Mintz p_buffer, 7151d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7161d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7171d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7181d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 7191d6cff4fSYuval Mintz break; 7201d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7211d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7221d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7231d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7241d6cff4fSYuval Mintz p_buffer, true); 7251d6cff4fSYuval Mintz break; 7261d6cff4fSYuval Mintz } 7271d6cff4fSYuval Mintz } else { 7281d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7291d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 7301d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 7311d6cff4fSYuval Mintz } 7321d6cff4fSYuval Mintz } 7331d6cff4fSYuval Mintz 7341d6cff4fSYuval Mintz return 0; 7351d6cff4fSYuval Mintz } 7361d6cff4fSYuval Mintz 7371d6cff4fSYuval Mintz static void 7381d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7391d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7401d6cff4fSYuval Mintz { 7411d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7421d6cff4fSYuval Mintz int rc; 7431d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7441d6cff4fSYuval Mintz dma_addr_t first_frag; 7451d6cff4fSYuval Mintz u16 parse_flags; 7461d6cff4fSYuval Mintz u8 bd_flags; 7471d6cff4fSYuval Mintz 7481d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7491d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7501d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7511d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7521d6cff4fSYuval Mintz bd_flags = 0; 7531d6cff4fSYuval Mintz 7541d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7551d6cff4fSYuval Mintz p_buffer->placement_offset; 7561d6cff4fSYuval Mintz parse_flags = p_buffer->parse_flags; 7571d6cff4fSYuval Mintz bd_flags = qed_ll2_convert_rx_parse_to_tx_flags(parse_flags); 7581d6cff4fSYuval Mintz SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_FORCE_VLAN_MODE, 1); 7591d6cff4fSYuval Mintz SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_L4_PROTOCOL, 1); 7601d6cff4fSYuval Mintz 7611d6cff4fSYuval Mintz rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 1, 7621d6cff4fSYuval Mintz p_buffer->vlan, bd_flags, 7631d6cff4fSYuval Mintz l4_hdr_offset_w, 7640629a330SArnd Bergmann p_ll2_conn->conn.tx_dest, 0, 7651d6cff4fSYuval Mintz first_frag, 7661d6cff4fSYuval Mintz p_buffer->packet_length, 7671d6cff4fSYuval Mintz p_buffer, true); 7681d6cff4fSYuval Mintz if (rc) { 7691d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 7701d6cff4fSYuval Mintz p_buffer, false); 7711d6cff4fSYuval Mintz break; 7721d6cff4fSYuval Mintz } 7731d6cff4fSYuval Mintz } 7741d6cff4fSYuval Mintz } 7751d6cff4fSYuval Mintz 7761d6cff4fSYuval Mintz static void 7771d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 7781d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7791d6cff4fSYuval Mintz { 7801d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7811d6cff4fSYuval Mintz int rc; 7821d6cff4fSYuval Mintz 7831d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 7841d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7851d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 7861d6cff4fSYuval Mintz p_ll2_conn->my_id, 7871d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 7881d6cff4fSYuval Mintz 0, p_buffer, true); 7891d6cff4fSYuval Mintz if (rc) { 7901d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 7911d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 7921d6cff4fSYuval Mintz break; 7931d6cff4fSYuval Mintz } 7941d6cff4fSYuval Mintz } 7951d6cff4fSYuval Mintz } 7961d6cff4fSYuval Mintz 7971d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 7981d6cff4fSYuval Mintz { 7991d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8001d6cff4fSYuval Mintz int rc; 8011d6cff4fSYuval Mintz 8021d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8031d6cff4fSYuval Mintz if (rc) 8041d6cff4fSYuval Mintz return rc; 8051d6cff4fSYuval Mintz 8061d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8071d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8081d6cff4fSYuval Mintz 8091d6cff4fSYuval Mintz return 0; 8101d6cff4fSYuval Mintz } 8111d6cff4fSYuval Mintz 8121d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8131d6cff4fSYuval Mintz { 8141d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8151d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8161d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8171d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8181d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8191d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8201d6cff4fSYuval Mintz int rc; 8211d6cff4fSYuval Mintz 8221d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8231d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8241d6cff4fSYuval Mintz 8251d6cff4fSYuval Mintz if (!num_bds) 8261d6cff4fSYuval Mintz return 0; 8271d6cff4fSYuval Mintz 8281d6cff4fSYuval Mintz while (num_bds) { 8291d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 8301d6cff4fSYuval Mintz return -EINVAL; 8311d6cff4fSYuval Mintz 8321d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8331d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8341d6cff4fSYuval Mintz if (!p_pkt) 8351d6cff4fSYuval Mintz return -EINVAL; 8361d6cff4fSYuval Mintz 8371d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8381d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8391d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8401d6cff4fSYuval Mintz p_pkt->bd_used); 8411d6cff4fSYuval Mintz return -EINVAL; 8421d6cff4fSYuval Mintz } 8431d6cff4fSYuval Mintz 8441d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 8451d6cff4fSYuval Mintz 8461d6cff4fSYuval Mintz num_bds--; 8471d6cff4fSYuval Mintz p_tx->bds_idx++; 8481d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 8491d6cff4fSYuval Mintz 8501d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 8511d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 8521d6cff4fSYuval Mintz 8531d6cff4fSYuval Mintz if (b_dont_submit_rx) { 8541d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 8551d6cff4fSYuval Mintz p_buffer); 8561d6cff4fSYuval Mintz continue; 8571d6cff4fSYuval Mintz } 8581d6cff4fSYuval Mintz 8591d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 8601d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 8611d6cff4fSYuval Mintz p_buffer, true); 8621d6cff4fSYuval Mintz if (rc != 0) { 8631d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8641d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8651d6cff4fSYuval Mintz b_dont_submit_rx = true; 8661d6cff4fSYuval Mintz } 8671d6cff4fSYuval Mintz } 8681d6cff4fSYuval Mintz 8691d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8701d6cff4fSYuval Mintz 8711d6cff4fSYuval Mintz return 0; 8721d6cff4fSYuval Mintz } 8731d6cff4fSYuval Mintz 8741d6cff4fSYuval Mintz static int 8751d6cff4fSYuval Mintz qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 8761d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_info, 8771d6cff4fSYuval Mintz u16 rx_num_ooo_buffers, u16 mtu) 8781d6cff4fSYuval Mintz { 8791d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buf = NULL; 8801d6cff4fSYuval Mintz void *p_virt; 8811d6cff4fSYuval Mintz u16 buf_idx; 8821d6cff4fSYuval Mintz int rc = 0; 8831d6cff4fSYuval Mintz 8840629a330SArnd Bergmann if (p_ll2_info->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) 8851d6cff4fSYuval Mintz return rc; 8861d6cff4fSYuval Mintz 8871d6cff4fSYuval Mintz if (!rx_num_ooo_buffers) 8881d6cff4fSYuval Mintz return -EINVAL; 8891d6cff4fSYuval Mintz 8901d6cff4fSYuval Mintz for (buf_idx = 0; buf_idx < rx_num_ooo_buffers; buf_idx++) { 8911d6cff4fSYuval Mintz p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 8921d6cff4fSYuval Mintz if (!p_buf) { 8931d6cff4fSYuval Mintz rc = -ENOMEM; 8941d6cff4fSYuval Mintz goto out; 8951d6cff4fSYuval Mintz } 8961d6cff4fSYuval Mintz 8971d6cff4fSYuval Mintz p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 8981d6cff4fSYuval Mintz p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 8991d6cff4fSYuval Mintz ETH_CACHE_LINE_SIZE - 1) & 9001d6cff4fSYuval Mintz ~(ETH_CACHE_LINE_SIZE - 1); 9011d6cff4fSYuval Mintz p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 9021d6cff4fSYuval Mintz p_buf->rx_buffer_size, 9031d6cff4fSYuval Mintz &p_buf->rx_buffer_phys_addr, 9041d6cff4fSYuval Mintz GFP_KERNEL); 9051d6cff4fSYuval Mintz if (!p_virt) { 9061d6cff4fSYuval Mintz kfree(p_buf); 9071d6cff4fSYuval Mintz rc = -ENOMEM; 9081d6cff4fSYuval Mintz goto out; 9091d6cff4fSYuval Mintz } 9101d6cff4fSYuval Mintz 9111d6cff4fSYuval Mintz p_buf->rx_buffer_virt_addr = p_virt; 9121d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 9131d6cff4fSYuval Mintz } 9141d6cff4fSYuval Mintz 9151d6cff4fSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 9161d6cff4fSYuval Mintz "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 9171d6cff4fSYuval Mintz rx_num_ooo_buffers, p_buf->rx_buffer_size); 9181d6cff4fSYuval Mintz 9191d6cff4fSYuval Mintz out: 9201d6cff4fSYuval Mintz return rc; 9211d6cff4fSYuval Mintz } 9221d6cff4fSYuval Mintz 9231d6cff4fSYuval Mintz static void 9241d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 9251d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9261d6cff4fSYuval Mintz { 9270629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) 9281d6cff4fSYuval Mintz return; 9291d6cff4fSYuval Mintz 9301d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 9311d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 9321d6cff4fSYuval Mintz } 9331d6cff4fSYuval Mintz 9341d6cff4fSYuval Mintz static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 9351d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9361d6cff4fSYuval Mintz { 9371d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 9381d6cff4fSYuval Mintz 9390629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) 9401d6cff4fSYuval Mintz return; 9411d6cff4fSYuval Mintz 9421d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 9431d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 9441d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 9451d6cff4fSYuval Mintz dma_free_coherent(&p_hwfn->cdev->pdev->dev, 9461d6cff4fSYuval Mintz p_buffer->rx_buffer_size, 9471d6cff4fSYuval Mintz p_buffer->rx_buffer_virt_addr, 9481d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr); 9491d6cff4fSYuval Mintz kfree(p_buffer); 9501d6cff4fSYuval Mintz } 9511d6cff4fSYuval Mintz } 9521d6cff4fSYuval Mintz 9531d6cff4fSYuval Mintz static void qed_ll2_stop_ooo(struct qed_dev *cdev) 9541d6cff4fSYuval Mintz { 9551d6cff4fSYuval Mintz struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 9561d6cff4fSYuval Mintz u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9571d6cff4fSYuval Mintz 9581d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n", 9591d6cff4fSYuval Mintz *handle); 9601d6cff4fSYuval Mintz 9611d6cff4fSYuval Mintz qed_ll2_terminate_connection(hwfn, *handle); 9621d6cff4fSYuval Mintz qed_ll2_release_connection(hwfn, *handle); 9631d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9641d6cff4fSYuval Mintz } 9651d6cff4fSYuval Mintz 9661d6cff4fSYuval Mintz static int qed_ll2_start_ooo(struct qed_dev *cdev, 9671d6cff4fSYuval Mintz struct qed_ll2_params *params) 9681d6cff4fSYuval Mintz { 9691d6cff4fSYuval Mintz struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 9701d6cff4fSYuval Mintz u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9710629a330SArnd Bergmann struct qed_ll2_conn ll2_info; 9721d6cff4fSYuval Mintz int rc; 9731d6cff4fSYuval Mintz 9740629a330SArnd Bergmann ll2_info.conn_type = QED_LL2_TYPE_ISCSI_OOO; 9750629a330SArnd Bergmann ll2_info.mtu = params->mtu; 9760629a330SArnd Bergmann ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets; 9770629a330SArnd Bergmann ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; 9780629a330SArnd Bergmann ll2_info.tx_tc = OOO_LB_TC; 9790629a330SArnd Bergmann ll2_info.tx_dest = CORE_TX_DEST_LB; 9801d6cff4fSYuval Mintz 9810629a330SArnd Bergmann rc = qed_ll2_acquire_connection(hwfn, &ll2_info, 9821d6cff4fSYuval Mintz QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, 9831d6cff4fSYuval Mintz handle); 9841d6cff4fSYuval Mintz if (rc) { 9851d6cff4fSYuval Mintz DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n"); 9861d6cff4fSYuval Mintz goto out; 9871d6cff4fSYuval Mintz } 9881d6cff4fSYuval Mintz 9891d6cff4fSYuval Mintz rc = qed_ll2_establish_connection(hwfn, *handle); 9901d6cff4fSYuval Mintz if (rc) { 9911d6cff4fSYuval Mintz DP_INFO(cdev, "Failed to establist LL2 OOO connection\n"); 9921d6cff4fSYuval Mintz goto fail; 9931d6cff4fSYuval Mintz } 9941d6cff4fSYuval Mintz 9951d6cff4fSYuval Mintz return 0; 9961d6cff4fSYuval Mintz 9971d6cff4fSYuval Mintz fail: 9981d6cff4fSYuval Mintz qed_ll2_release_connection(hwfn, *handle); 9991d6cff4fSYuval Mintz out: 10001d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 10011d6cff4fSYuval Mintz return rc; 10021d6cff4fSYuval Mintz } 10031d6cff4fSYuval Mintz #else /* IS_ENABLED(CONFIG_QED_ISCSI) */ 10041d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, 10051d6cff4fSYuval Mintz void *p_cookie) { return -EINVAL; } 10061d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, 10071d6cff4fSYuval Mintz void *p_cookie) { return -EINVAL; } 10081d6cff4fSYuval Mintz static inline int 10091d6cff4fSYuval Mintz qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 10101d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_info, 10111d6cff4fSYuval Mintz u16 rx_num_ooo_buffers, u16 mtu) { return 0; } 10121d6cff4fSYuval Mintz static inline void 10131d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 10141d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) { return; } 10151d6cff4fSYuval Mintz static inline void 10161d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 10171d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) { return; } 10181d6cff4fSYuval Mintz static inline void qed_ll2_stop_ooo(struct qed_dev *cdev) { return; } 10191d6cff4fSYuval Mintz static inline int qed_ll2_start_ooo(struct qed_dev *cdev, 10201d6cff4fSYuval Mintz struct qed_ll2_params *params) 10211d6cff4fSYuval Mintz { return -EINVAL; } 10221d6cff4fSYuval Mintz #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */ 10230a7fb11cSYuval Mintz 10240a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 10250a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 10260a7fb11cSYuval Mintz u8 action_on_error) 10270a7fb11cSYuval Mintz { 10280629a330SArnd Bergmann enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type; 10290a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 10300a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 10310a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10320a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10330a7fb11cSYuval Mintz u16 cqe_pbl_size; 10340a7fb11cSYuval Mintz int rc = 0; 10350a7fb11cSYuval Mintz 10360a7fb11cSYuval Mintz /* Get SPQ entry */ 10370a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10380a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10390a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10400a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10410a7fb11cSYuval Mintz 10420a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10430a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 10440a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10450a7fb11cSYuval Mintz if (rc) 10460a7fb11cSYuval Mintz return rc; 10470a7fb11cSYuval Mintz 10480a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 10490a7fb11cSYuval Mintz 10500a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10510a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 10520a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 10530a7fb11cSYuval Mintz 10540629a330SArnd Bergmann p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu); 10550a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->bd_base, 10560a7fb11cSYuval Mintz p_rx->rxq_chain.p_phys_addr); 10570a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 10580a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 10590a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 10600a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 10610a7fb11cSYuval Mintz 10620629a330SArnd Bergmann p_ramrod->drop_ttl0_flg = p_ll2_conn->conn.rx_drop_ttl0_flg; 10630629a330SArnd Bergmann p_ramrod->inner_vlan_removal_en = p_ll2_conn->conn.rx_vlan_removal_en; 10640a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 10651d6cff4fSYuval Mintz p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_ISCSI_OOO) ? 0 10661d6cff4fSYuval Mintz : 1; 10670a7fb11cSYuval Mintz 10680a7fb11cSYuval Mintz if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) && 10690a7fb11cSYuval Mintz p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE)) { 10700a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 10710a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 10720a7fb11cSYuval Mintz } else { 10730a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 10740a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 10750a7fb11cSYuval Mintz } 10760a7fb11cSYuval Mintz 10770a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 10780629a330SArnd Bergmann p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable; 10790a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10800a7fb11cSYuval Mintz } 10810a7fb11cSYuval Mintz 10820a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 10830a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10840a7fb11cSYuval Mintz { 10850629a330SArnd Bergmann enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type; 10860a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 10870a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 10880a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10890a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10900a7fb11cSYuval Mintz union qed_qm_pq_params pq_params; 10910a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 10920a7fb11cSYuval Mintz int rc = -EINVAL; 10930a7fb11cSYuval Mintz 10940a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 10950a7fb11cSYuval Mintz return 0; 10960a7fb11cSYuval Mintz 10970629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) 10981d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 10991d6cff4fSYuval Mintz else 11001d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 11011d6cff4fSYuval Mintz 11020a7fb11cSYuval Mintz /* Get SPQ entry */ 11030a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11040a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11050a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11060a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11070a7fb11cSYuval Mintz 11080a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11090a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 11100a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11110a7fb11cSYuval Mintz if (rc) 11120a7fb11cSYuval Mintz return rc; 11130a7fb11cSYuval Mintz 11140a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 11150a7fb11cSYuval Mintz 11160a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 11170a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 11180629a330SArnd Bergmann p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu); 11190a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 11200a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 11210a7fb11cSYuval Mintz 11220a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 11230a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 11240a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 11250a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 11260a7fb11cSYuval Mintz 11270a7fb11cSYuval Mintz memset(&pq_params, 0, sizeof(pq_params)); 11280629a330SArnd Bergmann pq_params.core.tc = p_ll2_conn->conn.tx_tc; 11290a7fb11cSYuval Mintz pq_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_CORE, &pq_params); 11300a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 11310a7fb11cSYuval Mintz 11320a7fb11cSYuval Mintz switch (conn_type) { 11331e128c81SArun Easi case QED_LL2_TYPE_FCOE: 11341e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 11351e128c81SArun Easi break; 11360a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI: 11370a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI_OOO: 11380a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ISCSI; 11390a7fb11cSYuval Mintz break; 11400a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 11410a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 11420a7fb11cSYuval Mintz break; 11430a7fb11cSYuval Mintz default: 11440a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 11450a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 11460a7fb11cSYuval Mintz } 11470a7fb11cSYuval Mintz 11480629a330SArnd Bergmann p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable; 11490a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11500a7fb11cSYuval Mintz } 11510a7fb11cSYuval Mintz 11520a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 11530a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11540a7fb11cSYuval Mintz { 11550a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 11560a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11570a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11580a7fb11cSYuval Mintz int rc = -EINVAL; 11590a7fb11cSYuval Mintz 11600a7fb11cSYuval Mintz /* Get SPQ entry */ 11610a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11620a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11630a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11640a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11650a7fb11cSYuval Mintz 11660a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11670a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 11680a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11690a7fb11cSYuval Mintz if (rc) 11700a7fb11cSYuval Mintz return rc; 11710a7fb11cSYuval Mintz 11720a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 11730a7fb11cSYuval Mintz 11740a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 11750a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 11760a7fb11cSYuval Mintz 11770a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11780a7fb11cSYuval Mintz } 11790a7fb11cSYuval Mintz 11800a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11810a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11820a7fb11cSYuval Mintz { 11830a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11840a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11850a7fb11cSYuval Mintz int rc = -EINVAL; 11860a7fb11cSYuval Mintz 11870a7fb11cSYuval Mintz /* Get SPQ entry */ 11880a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11890a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11900a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11910a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11920a7fb11cSYuval Mintz 11930a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11940a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11950a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11960a7fb11cSYuval Mintz if (rc) 11970a7fb11cSYuval Mintz return rc; 11980a7fb11cSYuval Mintz 11990a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 12000a7fb11cSYuval Mintz } 12010a7fb11cSYuval Mintz 12020a7fb11cSYuval Mintz static int 12030a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 12040a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info, u16 rx_num_desc) 12050a7fb11cSYuval Mintz { 12060a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 12070a7fb11cSYuval Mintz u32 capacity; 12080a7fb11cSYuval Mintz int rc = 0; 12090a7fb11cSYuval Mintz 12100a7fb11cSYuval Mintz if (!rx_num_desc) 12110a7fb11cSYuval Mintz goto out; 12120a7fb11cSYuval Mintz 12130a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 12140a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 12150a7fb11cSYuval Mintz QED_CHAIN_MODE_NEXT_PTR, 12160a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 12170a7fb11cSYuval Mintz rx_num_desc, 12180a7fb11cSYuval Mintz sizeof(struct core_rx_bd), 12190a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rxq_chain); 12200a7fb11cSYuval Mintz if (rc) { 12210a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 12220a7fb11cSYuval Mintz goto out; 12230a7fb11cSYuval Mintz } 12240a7fb11cSYuval Mintz 12250a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 12260a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 12270a7fb11cSYuval Mintz GFP_KERNEL); 12280a7fb11cSYuval Mintz if (!p_descq) { 12290a7fb11cSYuval Mintz rc = -ENOMEM; 12300a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 12310a7fb11cSYuval Mintz goto out; 12320a7fb11cSYuval Mintz } 12330a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 12340a7fb11cSYuval Mintz 12350a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 12360a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 12370a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 12380a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 12390a7fb11cSYuval Mintz rx_num_desc, 12400a7fb11cSYuval Mintz sizeof(struct core_rx_fast_path_cqe), 12410a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rcq_chain); 12420a7fb11cSYuval Mintz if (rc) { 12430a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 12440a7fb11cSYuval Mintz goto out; 12450a7fb11cSYuval Mintz } 12460a7fb11cSYuval Mintz 12470a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12480a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 12490629a330SArnd Bergmann p_ll2_info->conn.conn_type, rx_num_desc); 12500a7fb11cSYuval Mintz 12510a7fb11cSYuval Mintz out: 12520a7fb11cSYuval Mintz return rc; 12530a7fb11cSYuval Mintz } 12540a7fb11cSYuval Mintz 12550a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 12560a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info, 12570a7fb11cSYuval Mintz u16 tx_num_desc) 12580a7fb11cSYuval Mintz { 12590a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 12600a7fb11cSYuval Mintz u32 capacity; 12610a7fb11cSYuval Mintz int rc = 0; 12620a7fb11cSYuval Mintz 12630a7fb11cSYuval Mintz if (!tx_num_desc) 12640a7fb11cSYuval Mintz goto out; 12650a7fb11cSYuval Mintz 12660a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 12670a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 12680a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 12690a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 12700a7fb11cSYuval Mintz tx_num_desc, 12710a7fb11cSYuval Mintz sizeof(struct core_tx_bd), 12720a7fb11cSYuval Mintz &p_ll2_info->tx_queue.txq_chain); 12730a7fb11cSYuval Mintz if (rc) 12740a7fb11cSYuval Mintz goto out; 12750a7fb11cSYuval Mintz 12760a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 12770a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_tx_packet), 12780a7fb11cSYuval Mintz GFP_KERNEL); 12790a7fb11cSYuval Mintz if (!p_descq) { 12800a7fb11cSYuval Mintz rc = -ENOMEM; 12810a7fb11cSYuval Mintz goto out; 12820a7fb11cSYuval Mintz } 12830a7fb11cSYuval Mintz p_ll2_info->tx_queue.descq_array = p_descq; 12840a7fb11cSYuval Mintz 12850a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12860a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 12870629a330SArnd Bergmann p_ll2_info->conn.conn_type, tx_num_desc); 12880a7fb11cSYuval Mintz 12890a7fb11cSYuval Mintz out: 12900a7fb11cSYuval Mintz if (rc) 12910a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12920a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 12930a7fb11cSYuval Mintz tx_num_desc); 12940a7fb11cSYuval Mintz return rc; 12950a7fb11cSYuval Mintz } 12960a7fb11cSYuval Mintz 12970a7fb11cSYuval Mintz int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn, 12980629a330SArnd Bergmann struct qed_ll2_conn *p_params, 12990a7fb11cSYuval Mintz u16 rx_num_desc, 13000a7fb11cSYuval Mintz u16 tx_num_desc, 13010a7fb11cSYuval Mintz u8 *p_connection_handle) 13020a7fb11cSYuval Mintz { 13030a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13040a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 13050a7fb11cSYuval Mintz int rc; 13060a7fb11cSYuval Mintz u8 i; 13070a7fb11cSYuval Mintz 13080a7fb11cSYuval Mintz if (!p_connection_handle || !p_hwfn->p_ll2_info) 13090a7fb11cSYuval Mintz return -EINVAL; 13100a7fb11cSYuval Mintz 13110a7fb11cSYuval Mintz /* Find a free connection to be used */ 13120a7fb11cSYuval Mintz for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { 13130a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13140a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13150a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13160a7fb11cSYuval Mintz continue; 13170a7fb11cSYuval Mintz } 13180a7fb11cSYuval Mintz 13190a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13200a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13210a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13220a7fb11cSYuval Mintz break; 13230a7fb11cSYuval Mintz } 13240a7fb11cSYuval Mintz if (!p_ll2_info) 13250a7fb11cSYuval Mintz return -EBUSY; 13260a7fb11cSYuval Mintz 13270629a330SArnd Bergmann p_ll2_info->conn = *p_params; 13280a7fb11cSYuval Mintz 13290a7fb11cSYuval Mintz rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info, rx_num_desc); 13300a7fb11cSYuval Mintz if (rc) 13310a7fb11cSYuval Mintz goto q_allocate_fail; 13320a7fb11cSYuval Mintz 13330a7fb11cSYuval Mintz rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info, tx_num_desc); 13340a7fb11cSYuval Mintz if (rc) 13350a7fb11cSYuval Mintz goto q_allocate_fail; 13360a7fb11cSYuval Mintz 13371d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 13381d6cff4fSYuval Mintz rx_num_desc * 2, p_params->mtu); 13391d6cff4fSYuval Mintz if (rc) 13401d6cff4fSYuval Mintz goto q_allocate_fail; 13411d6cff4fSYuval Mintz 13420a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 13431d6cff4fSYuval Mintz if (p_params->conn_type == QED_LL2_TYPE_ISCSI_OOO) { 13441d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 13451d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 13461d6cff4fSYuval Mintz } else { 13470a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 13480a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 13491d6cff4fSYuval Mintz } 13500a7fb11cSYuval Mintz 13510a7fb11cSYuval Mintz if (rx_num_desc) { 13520a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 13530a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 13540a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 13550a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 13560a7fb11cSYuval Mintz p_ll2_info->rx_queue.b_cb_registred = true; 13570a7fb11cSYuval Mintz } 13580a7fb11cSYuval Mintz 13590a7fb11cSYuval Mintz if (tx_num_desc) { 13600a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 13610a7fb11cSYuval Mintz comp_tx_cb, 13620a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 13630a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 13640a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 13650a7fb11cSYuval Mintz p_ll2_info->tx_queue.b_cb_registred = true; 13660a7fb11cSYuval Mintz } 13670a7fb11cSYuval Mintz 13680a7fb11cSYuval Mintz *p_connection_handle = i; 13690a7fb11cSYuval Mintz return rc; 13700a7fb11cSYuval Mintz 13710a7fb11cSYuval Mintz q_allocate_fail: 13720a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 13730a7fb11cSYuval Mintz return -ENOMEM; 13740a7fb11cSYuval Mintz } 13750a7fb11cSYuval Mintz 13760a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 13770a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 13780a7fb11cSYuval Mintz { 13790a7fb11cSYuval Mintz u8 action_on_error = 0; 13800a7fb11cSYuval Mintz 13810a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 13820a7fb11cSYuval Mintz return 0; 13830a7fb11cSYuval Mintz 13840a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 13850a7fb11cSYuval Mintz 13860a7fb11cSYuval Mintz SET_FIELD(action_on_error, 13870a7fb11cSYuval Mintz CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, 13880629a330SArnd Bergmann p_ll2_conn->conn.ai_err_packet_too_big); 13890a7fb11cSYuval Mintz SET_FIELD(action_on_error, 13900629a330SArnd Bergmann CORE_RX_ACTION_ON_ERROR_NO_BUFF, p_ll2_conn->conn.ai_err_no_buf); 13910a7fb11cSYuval Mintz 13920a7fb11cSYuval Mintz return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 13930a7fb11cSYuval Mintz } 13940a7fb11cSYuval Mintz 13950a7fb11cSYuval Mintz int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) 13960a7fb11cSYuval Mintz { 13970a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 13980a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 13990a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 14000a7fb11cSYuval Mintz int rc = -EINVAL; 14010a7fb11cSYuval Mintz u32 i, capacity; 14020a7fb11cSYuval Mintz u8 qid; 14030a7fb11cSYuval Mintz 14040a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 14050a7fb11cSYuval Mintz if (!p_ll2_conn) 14060a7fb11cSYuval Mintz return -EINVAL; 14070a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 14080a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 14090a7fb11cSYuval Mintz 14100a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 14110a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 14120a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 14130a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 14140a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 14150a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 14160a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 14170a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 14180a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 14190a7fb11cSYuval Mintz &p_rx->free_descq); 14200a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 14210a7fb11cSYuval Mintz 14220a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 14230a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 14240a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 14250a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 14260a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 14270a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 14280a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 14290a7fb11cSYuval Mintz list_add_tail(&p_tx->descq_array[i].list_entry, 14300a7fb11cSYuval Mintz &p_tx->free_descq); 14310a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 14320a7fb11cSYuval Mintz p_tx->bds_idx = 0; 14330a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 14340a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 14350a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 14360a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 14370a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 14380a7fb11cSYuval Mintz 14390a7fb11cSYuval Mintz qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 14400a7fb11cSYuval Mintz 14410a7fb11cSYuval Mintz qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; 14420a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 14430a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 14440a7fb11cSYuval Mintz p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + 14450a7fb11cSYuval Mintz GTT_BAR0_MAP_REG_TSDM_RAM + 14460a7fb11cSYuval Mintz TSTORM_LL2_RX_PRODS_OFFSET(qid); 14470a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 14480a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 14490a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 14500a7fb11cSYuval Mintz 14510a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 14520a7fb11cSYuval Mintz if (rc) 14530a7fb11cSYuval Mintz return rc; 14540a7fb11cSYuval Mintz 14550a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 14560a7fb11cSYuval Mintz if (rc) 14570a7fb11cSYuval Mintz return rc; 14580a7fb11cSYuval Mintz 14590a7fb11cSYuval Mintz if (p_hwfn->hw_info.personality != QED_PCI_ETH_ROCE) 14600a7fb11cSYuval Mintz qed_wr(p_hwfn, p_hwfn->p_main_ptt, PRS_REG_USE_LIGHT_L2, 1); 14610a7fb11cSYuval Mintz 14621d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 14631d6cff4fSYuval Mintz 14641e128c81SArun Easi if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) { 14651e128c81SArun Easi qed_llh_add_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, 14661e128c81SArun Easi 0x8906, 0, 14671e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 14681e128c81SArun Easi qed_llh_add_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, 14691e128c81SArun Easi 0x8914, 0, 14701e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 14711e128c81SArun Easi } 14721e128c81SArun Easi 14730a7fb11cSYuval Mintz return rc; 14740a7fb11cSYuval Mintz } 14750a7fb11cSYuval Mintz 14760a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 14770a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 14780a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 14790a7fb11cSYuval Mintz { 14800a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 14810a7fb11cSYuval Mintz struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; 14820a7fb11cSYuval Mintz bool b_notify_fw = false; 14830a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 14840a7fb11cSYuval Mintz 14850a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 14860a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 14870a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 14880a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 14890a7fb11cSYuval Mintz list_entry); 1490b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 14910a7fb11cSYuval Mintz &p_rx->active_descq); 14920a7fb11cSYuval Mintz b_notify_fw = true; 14930a7fb11cSYuval Mintz } 14940a7fb11cSYuval Mintz 14950a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 14960a7fb11cSYuval Mintz if (p_curp) { 14970a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 14980a7fb11cSYuval Mintz b_notify_fw = true; 14990a7fb11cSYuval Mintz } 15000a7fb11cSYuval Mintz 15010a7fb11cSYuval Mintz if (!b_notify_fw) 15020a7fb11cSYuval Mintz return; 15030a7fb11cSYuval Mintz 15040a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 15050a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 15060a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 15070a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 15080a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 15090a7fb11cSYuval Mintz } 15100a7fb11cSYuval Mintz 15110a7fb11cSYuval Mintz int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn, 15120a7fb11cSYuval Mintz u8 connection_handle, 15130a7fb11cSYuval Mintz dma_addr_t addr, 15140a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 15150a7fb11cSYuval Mintz { 15160a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 15170a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 15180a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 15190a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 15200a7fb11cSYuval Mintz unsigned long flags; 15210a7fb11cSYuval Mintz void *p_data; 15220a7fb11cSYuval Mintz int rc = 0; 15230a7fb11cSYuval Mintz 15240a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 15250a7fb11cSYuval Mintz if (!p_ll2_conn) 15260a7fb11cSYuval Mintz return -EINVAL; 15270a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 15280a7fb11cSYuval Mintz 15290a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 15300a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 15310a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 15320a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 15330a7fb11cSYuval Mintz if (p_curp) { 15340a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 15350a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 15360a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 15370a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 15380a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 15390a7fb11cSYuval Mintz } 15400a7fb11cSYuval Mintz } 15410a7fb11cSYuval Mintz 15420a7fb11cSYuval Mintz /* If we're lacking entires, let's try to flush buffers to FW */ 15430a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 15440a7fb11cSYuval Mintz rc = -EBUSY; 15450a7fb11cSYuval Mintz p_curp = NULL; 15460a7fb11cSYuval Mintz goto out_notify; 15470a7fb11cSYuval Mintz } 15480a7fb11cSYuval Mintz 15490a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 15500a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 15510a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 15520a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 15530a7fb11cSYuval Mintz p_curp->cookie = cookie; 15540a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 15550a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 15560a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 15570a7fb11cSYuval Mintz 15580a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 15590a7fb11cSYuval Mintz if (!notify_fw) { 15600a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 15610a7fb11cSYuval Mintz goto out; 15620a7fb11cSYuval Mintz } 15630a7fb11cSYuval Mintz 15640a7fb11cSYuval Mintz out_notify: 15650a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 15660a7fb11cSYuval Mintz out: 15670a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 15680a7fb11cSYuval Mintz return rc; 15690a7fb11cSYuval Mintz } 15700a7fb11cSYuval Mintz 15710a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 15720a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 15730a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 15740a7fb11cSYuval Mintz u8 num_of_bds, 15750a7fb11cSYuval Mintz dma_addr_t first_frag, 15760a7fb11cSYuval Mintz u16 first_frag_len, void *p_cookie, 15770a7fb11cSYuval Mintz u8 notify_fw) 15780a7fb11cSYuval Mintz { 15790a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 15800a7fb11cSYuval Mintz p_curp->cookie = p_cookie; 15810a7fb11cSYuval Mintz p_curp->bd_used = num_of_bds; 15820a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 15830a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 15840a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15850a7fb11cSYuval Mintz 15860a7fb11cSYuval Mintz p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = first_frag; 15870a7fb11cSYuval Mintz p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = first_frag_len; 15880a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 15890a7fb11cSYuval Mintz } 15900a7fb11cSYuval Mintz 15910a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 15920a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 15930a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 15940a7fb11cSYuval Mintz u8 num_of_bds, 15950a7fb11cSYuval Mintz enum core_tx_dest tx_dest, 15960a7fb11cSYuval Mintz u16 vlan, 15970a7fb11cSYuval Mintz u8 bd_flags, 15980a7fb11cSYuval Mintz u16 l4_hdr_offset_w, 1599abd49676SRam Amrani enum core_roce_flavor_type type, 16000a7fb11cSYuval Mintz dma_addr_t first_frag, 16010a7fb11cSYuval Mintz u16 first_frag_len) 16020a7fb11cSYuval Mintz { 16030a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 16040a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 16050a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 16060a7fb11cSYuval Mintz u16 frag_idx; 16070a7fb11cSYuval Mintz 16080a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 16090a7fb11cSYuval Mintz start_bd->nw_vlan_or_lb_echo = cpu_to_le16(vlan); 16100a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, 16110a7fb11cSYuval Mintz cpu_to_le16(l4_hdr_offset_w)); 16120a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); 16130a7fb11cSYuval Mintz start_bd->bd_flags.as_bitfield = bd_flags; 16140a7fb11cSYuval Mintz start_bd->bd_flags.as_bitfield |= CORE_TX_BD_FLAGS_START_BD_MASK << 16150a7fb11cSYuval Mintz CORE_TX_BD_FLAGS_START_BD_SHIFT; 16160a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield0, CORE_TX_BD_NBDS, num_of_bds); 16178d1d8fcbSRam Amrani SET_FIELD(start_bd->bitfield0, CORE_TX_BD_ROCE_FLAV, type); 16180a7fb11cSYuval Mintz DMA_REGPAIR_LE(start_bd->addr, first_frag); 16190a7fb11cSYuval Mintz start_bd->nbytes = cpu_to_le16(first_frag_len); 16200a7fb11cSYuval Mintz 16210a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 16220a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 16230a7fb11cSYuval 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", 16240a7fb11cSYuval Mintz p_ll2->queue_id, 16250a7fb11cSYuval Mintz p_ll2->cid, 16260629a330SArnd Bergmann p_ll2->conn.conn_type, 16270a7fb11cSYuval Mintz prod_idx, 16280a7fb11cSYuval Mintz first_frag_len, 16290a7fb11cSYuval Mintz num_of_bds, 16300a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 16310a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 16320a7fb11cSYuval Mintz 16330a7fb11cSYuval Mintz if (p_ll2->tx_queue.cur_send_frag_num == num_of_bds) 16340a7fb11cSYuval Mintz return; 16350a7fb11cSYuval Mintz 16360a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 16370a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 16380a7fb11cSYuval Mintz frag_idx < num_of_bds; frag_idx++) { 16390a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 16400a7fb11cSYuval Mintz 16410a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 16420a7fb11cSYuval Mintz (*p_bd)->bd_flags.as_bitfield = 0; 16430a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 16440a7fb11cSYuval Mintz (*p_bd)->bitfield0 = 0; 16450a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 16460a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 16470a7fb11cSYuval Mintz } 16480a7fb11cSYuval Mintz } 16490a7fb11cSYuval Mintz 16500a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 16510a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 16520a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 16530a7fb11cSYuval Mintz { 16540a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 16550a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 16560a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 16570a7fb11cSYuval Mintz struct core_db_data db_msg = { 0, 0, 0 }; 16580a7fb11cSYuval Mintz u16 bd_prod; 16590a7fb11cSYuval Mintz 16600a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 16610a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 16620a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 16630a7fb11cSYuval Mintz return; 16640a7fb11cSYuval Mintz 16650a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 16660a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 16670a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 16680a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 16690a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 16700a7fb11cSYuval Mintz 16710a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 16720a7fb11cSYuval Mintz if (!b_notify) 16730a7fb11cSYuval Mintz return; 16740a7fb11cSYuval Mintz 16750a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 16760a7fb11cSYuval Mintz 16770a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 16780a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 16790a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 16800a7fb11cSYuval Mintz if (!p_pkt) 16810a7fb11cSYuval Mintz break; 16820a7fb11cSYuval Mintz 1683b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 16840a7fb11cSYuval Mintz } 16850a7fb11cSYuval Mintz 16860a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 16870a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 16880a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 16890a7fb11cSYuval Mintz DQ_XCM_CORE_TX_BD_PROD_CMD); 16900a7fb11cSYuval Mintz db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 16910a7fb11cSYuval Mintz db_msg.spq_prod = cpu_to_le16(bd_prod); 16920a7fb11cSYuval Mintz 16930a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 16940a7fb11cSYuval Mintz wmb(); 16950a7fb11cSYuval Mintz 16960a7fb11cSYuval Mintz DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); 16970a7fb11cSYuval Mintz 16980a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 16990a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 17000a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 17010a7fb11cSYuval Mintz p_ll2_conn->queue_id, 17020629a330SArnd Bergmann p_ll2_conn->cid, p_ll2_conn->conn.conn_type, db_msg.spq_prod); 17030a7fb11cSYuval Mintz } 17040a7fb11cSYuval Mintz 17050a7fb11cSYuval Mintz int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn, 17060a7fb11cSYuval Mintz u8 connection_handle, 17070a7fb11cSYuval Mintz u8 num_of_bds, 17080a7fb11cSYuval Mintz u16 vlan, 17090a7fb11cSYuval Mintz u8 bd_flags, 17100a7fb11cSYuval Mintz u16 l4_hdr_offset_w, 17111d6cff4fSYuval Mintz enum qed_ll2_tx_dest e_tx_dest, 1712abd49676SRam Amrani enum qed_ll2_roce_flavor_type qed_roce_flavor, 17130a7fb11cSYuval Mintz dma_addr_t first_frag, 17140a7fb11cSYuval Mintz u16 first_frag_len, void *cookie, u8 notify_fw) 17150a7fb11cSYuval Mintz { 17160a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 17170a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 1718abd49676SRam Amrani enum core_roce_flavor_type roce_flavor; 17190a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 17200a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 17211d6cff4fSYuval Mintz enum core_tx_dest tx_dest; 17220a7fb11cSYuval Mintz unsigned long flags; 17230a7fb11cSYuval Mintz int rc = 0; 17240a7fb11cSYuval Mintz 17250a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17260a7fb11cSYuval Mintz if (!p_ll2_conn) 17270a7fb11cSYuval Mintz return -EINVAL; 17280a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 17290a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 17300a7fb11cSYuval Mintz 17310a7fb11cSYuval Mintz if (num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET) 17320a7fb11cSYuval Mintz return -EIO; 17330a7fb11cSYuval Mintz 17340a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 17350a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 17360a7fb11cSYuval Mintz rc = -EEXIST; 17370a7fb11cSYuval Mintz goto out; 17380a7fb11cSYuval Mintz } 17390a7fb11cSYuval Mintz 17400a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 17410a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 17420a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 17430a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 17440a7fb11cSYuval Mintz if (p_curp && qed_chain_get_elem_left(p_tx_chain) < num_of_bds) 17450a7fb11cSYuval Mintz p_curp = NULL; 17460a7fb11cSYuval Mintz 17470a7fb11cSYuval Mintz if (!p_curp) { 17480a7fb11cSYuval Mintz rc = -EBUSY; 17490a7fb11cSYuval Mintz goto out; 17500a7fb11cSYuval Mintz } 17510a7fb11cSYuval Mintz 17521d6cff4fSYuval Mintz tx_dest = e_tx_dest == QED_LL2_TX_DEST_NW ? CORE_TX_DEST_NW : 17531d6cff4fSYuval Mintz CORE_TX_DEST_LB; 1754abd49676SRam Amrani if (qed_roce_flavor == QED_LL2_ROCE) { 1755abd49676SRam Amrani roce_flavor = CORE_ROCE; 1756abd49676SRam Amrani } else if (qed_roce_flavor == QED_LL2_RROCE) { 1757abd49676SRam Amrani roce_flavor = CORE_RROCE; 1758abd49676SRam Amrani } else { 1759abd49676SRam Amrani rc = -EINVAL; 1760abd49676SRam Amrani goto out; 1761abd49676SRam Amrani } 1762abd49676SRam Amrani 17630a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 17640a7fb11cSYuval Mintz qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, 17650a7fb11cSYuval Mintz num_of_bds, first_frag, 17660a7fb11cSYuval Mintz first_frag_len, cookie, notify_fw); 17670a7fb11cSYuval Mintz qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, 17681d6cff4fSYuval Mintz num_of_bds, tx_dest, 17690a7fb11cSYuval Mintz vlan, bd_flags, l4_hdr_offset_w, 1770abd49676SRam Amrani roce_flavor, 17710a7fb11cSYuval Mintz first_frag, first_frag_len); 17720a7fb11cSYuval Mintz 17730a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 17740a7fb11cSYuval Mintz 17750a7fb11cSYuval Mintz out: 17760a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 17770a7fb11cSYuval Mintz return rc; 17780a7fb11cSYuval Mintz } 17790a7fb11cSYuval Mintz 17800a7fb11cSYuval Mintz int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn, 17810a7fb11cSYuval Mintz u8 connection_handle, 17820a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 17830a7fb11cSYuval Mintz { 17840a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 17850a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 17860a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 17870a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 17880a7fb11cSYuval Mintz unsigned long flags; 17890a7fb11cSYuval Mintz 17900a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17910a7fb11cSYuval Mintz if (!p_ll2_conn) 17920a7fb11cSYuval Mintz return -EINVAL; 17930a7fb11cSYuval Mintz 17940a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 17950a7fb11cSYuval Mintz return -EINVAL; 17960a7fb11cSYuval Mintz 17970a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 17980a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 17990a7fb11cSYuval Mintz 18000a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 18010a7fb11cSYuval Mintz return -EINVAL; 18020a7fb11cSYuval Mintz 18030a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 18040a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 18050a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 18060a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 18070a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 18080a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 18090a7fb11cSYuval Mintz 18100a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 18110a7fb11cSYuval Mintz 18120a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 18130a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 18140a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 18150a7fb11cSYuval Mintz 18160a7fb11cSYuval Mintz return 0; 18170a7fb11cSYuval Mintz } 18180a7fb11cSYuval Mintz 18190a7fb11cSYuval Mintz int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) 18200a7fb11cSYuval Mintz { 18210a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18220a7fb11cSYuval Mintz int rc = -EINVAL; 18230a7fb11cSYuval Mintz 18240a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 18250a7fb11cSYuval Mintz if (!p_ll2_conn) 18260a7fb11cSYuval Mintz return -EINVAL; 18270a7fb11cSYuval Mintz 18280a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 18290a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 18300a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 18310a7fb11cSYuval Mintz if (rc) 18320a7fb11cSYuval Mintz return rc; 18330a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 18340a7fb11cSYuval Mintz } 18350a7fb11cSYuval Mintz 18360a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 18370a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 18380a7fb11cSYuval Mintz if (rc) 18390a7fb11cSYuval Mintz return rc; 18400a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 18410a7fb11cSYuval Mintz } 18420a7fb11cSYuval Mintz 18430629a330SArnd Bergmann if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) 18441d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 18451d6cff4fSYuval Mintz 18461e128c81SArun Easi if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) { 18471e128c81SArun Easi qed_llh_remove_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, 18481e128c81SArun Easi 0x8906, 0, 18491e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 18501e128c81SArun Easi qed_llh_remove_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, 18511e128c81SArun Easi 0x8914, 0, 18521e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 18531e128c81SArun Easi } 18541e128c81SArun Easi 18550a7fb11cSYuval Mintz return rc; 18560a7fb11cSYuval Mintz } 18570a7fb11cSYuval Mintz 18580a7fb11cSYuval Mintz void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) 18590a7fb11cSYuval Mintz { 18600a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18610a7fb11cSYuval Mintz 18620a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18630a7fb11cSYuval Mintz if (!p_ll2_conn) 18640a7fb11cSYuval Mintz return; 18650a7fb11cSYuval Mintz 18660a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 18670a7fb11cSYuval Mintz p_ll2_conn->rx_queue.b_cb_registred = false; 18680a7fb11cSYuval Mintz qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 18690a7fb11cSYuval Mintz } 18700a7fb11cSYuval Mintz 18710a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 18720a7fb11cSYuval Mintz p_ll2_conn->tx_queue.b_cb_registred = false; 18730a7fb11cSYuval Mintz qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 18740a7fb11cSYuval Mintz } 18750a7fb11cSYuval Mintz 18760a7fb11cSYuval Mintz kfree(p_ll2_conn->tx_queue.descq_array); 18770a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 18780a7fb11cSYuval Mintz 18790a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 18800a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 18810a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 18820a7fb11cSYuval Mintz 18830a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 18840a7fb11cSYuval Mintz 18851d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 18861d6cff4fSYuval Mintz 18870a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 18880a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 18890a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 18900a7fb11cSYuval Mintz } 18910a7fb11cSYuval Mintz 18920a7fb11cSYuval Mintz struct qed_ll2_info *qed_ll2_alloc(struct qed_hwfn *p_hwfn) 18930a7fb11cSYuval Mintz { 18940a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 18950a7fb11cSYuval Mintz u8 i; 18960a7fb11cSYuval Mintz 18970a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 18980a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 18990a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 19000a7fb11cSYuval Mintz if (!p_ll2_connections) { 19010a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 19020a7fb11cSYuval Mintz return NULL; 19030a7fb11cSYuval Mintz } 19040a7fb11cSYuval Mintz 19050a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 19060a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 19070a7fb11cSYuval Mintz 19080a7fb11cSYuval Mintz return p_ll2_connections; 19090a7fb11cSYuval Mintz } 19100a7fb11cSYuval Mintz 19110a7fb11cSYuval Mintz void qed_ll2_setup(struct qed_hwfn *p_hwfn, 19120a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections) 19130a7fb11cSYuval Mintz { 19140a7fb11cSYuval Mintz int i; 19150a7fb11cSYuval Mintz 19160a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 19170a7fb11cSYuval Mintz mutex_init(&p_ll2_connections[i].mutex); 19180a7fb11cSYuval Mintz } 19190a7fb11cSYuval Mintz 19200a7fb11cSYuval Mintz void qed_ll2_free(struct qed_hwfn *p_hwfn, 19210a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections) 19220a7fb11cSYuval Mintz { 19230a7fb11cSYuval Mintz kfree(p_ll2_connections); 19240a7fb11cSYuval Mintz } 19250a7fb11cSYuval Mintz 19260a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, 19270a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 19280a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 19290a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 19300a7fb11cSYuval Mintz { 19310a7fb11cSYuval Mintz struct core_ll2_tstorm_per_queue_stat tstats; 19320a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 19330a7fb11cSYuval Mintz u32 tstats_addr; 19340a7fb11cSYuval Mintz 19350a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 19360a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 19370a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 19380a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 19390a7fb11cSYuval Mintz 19400a7fb11cSYuval Mintz p_stats->packet_too_big_discard = 19410a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 19420a7fb11cSYuval Mintz p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard); 19430a7fb11cSYuval Mintz } 19440a7fb11cSYuval Mintz 19450a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 19460a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 19470a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 19480a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 19490a7fb11cSYuval Mintz { 19500a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 19510a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 19520a7fb11cSYuval Mintz u32 ustats_addr; 19530a7fb11cSYuval Mintz 19540a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 19550a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 19560a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 19570a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 19580a7fb11cSYuval Mintz 19590a7fb11cSYuval Mintz p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 19600a7fb11cSYuval Mintz p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 19610a7fb11cSYuval Mintz p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 19620a7fb11cSYuval Mintz p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 19630a7fb11cSYuval Mintz p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 19640a7fb11cSYuval Mintz p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 19650a7fb11cSYuval Mintz } 19660a7fb11cSYuval Mintz 19670a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 19680a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 19690a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 19700a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 19710a7fb11cSYuval Mintz { 19720a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 19730a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 19740a7fb11cSYuval Mintz u32 pstats_addr; 19750a7fb11cSYuval Mintz 19760a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 19770a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 19780a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 19790a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 19800a7fb11cSYuval Mintz 19810a7fb11cSYuval Mintz p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes); 19820a7fb11cSYuval Mintz p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes); 19830a7fb11cSYuval Mintz p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes); 19840a7fb11cSYuval Mintz p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts); 19850a7fb11cSYuval Mintz p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts); 19860a7fb11cSYuval Mintz p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts); 19870a7fb11cSYuval Mintz } 19880a7fb11cSYuval Mintz 19890a7fb11cSYuval Mintz int qed_ll2_get_stats(struct qed_hwfn *p_hwfn, 19900a7fb11cSYuval Mintz u8 connection_handle, struct qed_ll2_stats *p_stats) 19910a7fb11cSYuval Mintz { 19920a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19930a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 19940a7fb11cSYuval Mintz 19950a7fb11cSYuval Mintz memset(p_stats, 0, sizeof(*p_stats)); 19960a7fb11cSYuval Mintz 19970a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 19980a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 19990a7fb11cSYuval Mintz return -EINVAL; 20000a7fb11cSYuval Mintz 20010a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 20020a7fb11cSYuval Mintz 20030a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 20040a7fb11cSYuval Mintz if (!p_ptt) { 20050a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 20060a7fb11cSYuval Mintz return -EINVAL; 20070a7fb11cSYuval Mintz } 20080a7fb11cSYuval Mintz 20090a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20100a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20110a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 20120a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20130a7fb11cSYuval Mintz 20140a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 20150a7fb11cSYuval Mintz return 0; 20160a7fb11cSYuval Mintz } 20170a7fb11cSYuval Mintz 20180a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 20190a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 20200a7fb11cSYuval Mintz void *cookie) 20210a7fb11cSYuval Mintz { 20220a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 20230a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 20240a7fb11cSYuval Mintz } 20250a7fb11cSYuval Mintz 20260a7fb11cSYuval Mintz static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 20270a7fb11cSYuval Mintz { 20280629a330SArnd Bergmann struct qed_ll2_conn ll2_info; 202988a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 20300a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 20310a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 20320a7fb11cSYuval Mintz int rc, i; 2033fc831825SYuval Mintz u8 gsi_enable = 1; 20340a7fb11cSYuval Mintz 20350a7fb11cSYuval Mintz /* Initialize LL2 locks & lists */ 20360a7fb11cSYuval Mintz INIT_LIST_HEAD(&cdev->ll2->list); 20370a7fb11cSYuval Mintz spin_lock_init(&cdev->ll2->lock); 20380a7fb11cSYuval Mintz cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 20390a7fb11cSYuval Mintz L1_CACHE_BYTES + params->mtu; 20400a7fb11cSYuval Mintz cdev->ll2->frags_mapped = params->frags_mapped; 20410a7fb11cSYuval Mintz 20420a7fb11cSYuval Mintz /*Allocate memory for LL2 */ 20430a7fb11cSYuval Mintz DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", 20440a7fb11cSYuval Mintz cdev->ll2->rx_size); 20450a7fb11cSYuval Mintz for (i = 0; i < QED_LL2_RX_SIZE; i++) { 20460a7fb11cSYuval Mintz buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 20470a7fb11cSYuval Mintz if (!buffer) { 20480a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 20490a7fb11cSYuval Mintz goto fail; 20500a7fb11cSYuval Mintz } 20510a7fb11cSYuval Mintz 20520a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 20530a7fb11cSYuval Mintz &buffer->phys_addr); 20540a7fb11cSYuval Mintz if (rc) { 20550a7fb11cSYuval Mintz kfree(buffer); 20560a7fb11cSYuval Mintz goto fail; 20570a7fb11cSYuval Mintz } 20580a7fb11cSYuval Mintz 20590a7fb11cSYuval Mintz list_add_tail(&buffer->list, &cdev->ll2->list); 20600a7fb11cSYuval Mintz } 20610a7fb11cSYuval Mintz 20620a7fb11cSYuval Mintz switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { 20631e128c81SArun Easi case QED_PCI_FCOE: 20641e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 20651e128c81SArun Easi gsi_enable = 0; 20661e128c81SArun Easi break; 20670a7fb11cSYuval Mintz case QED_PCI_ISCSI: 20680a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ISCSI; 2069fc831825SYuval Mintz gsi_enable = 0; 20700a7fb11cSYuval Mintz break; 20710a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 20720a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 20730a7fb11cSYuval Mintz break; 20740a7fb11cSYuval Mintz default: 20750a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 20760a7fb11cSYuval Mintz } 20770a7fb11cSYuval Mintz 20780a7fb11cSYuval Mintz /* Prepare the temporary ll2 information */ 20790a7fb11cSYuval Mintz memset(&ll2_info, 0, sizeof(ll2_info)); 20800629a330SArnd Bergmann 20810a7fb11cSYuval Mintz ll2_info.conn_type = conn_type; 20820a7fb11cSYuval Mintz ll2_info.mtu = params->mtu; 20830a7fb11cSYuval Mintz ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets; 20840a7fb11cSYuval Mintz ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; 20850a7fb11cSYuval Mintz ll2_info.tx_tc = 0; 20860a7fb11cSYuval Mintz ll2_info.tx_dest = CORE_TX_DEST_NW; 2087fc831825SYuval Mintz ll2_info.gsi_enable = gsi_enable; 20880a7fb11cSYuval Mintz 20890a7fb11cSYuval Mintz rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info, 20900a7fb11cSYuval Mintz QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, 20910a7fb11cSYuval Mintz &cdev->ll2->handle); 20920a7fb11cSYuval Mintz if (rc) { 20930a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire LL2 connection\n"); 20940a7fb11cSYuval Mintz goto fail; 20950a7fb11cSYuval Mintz } 20960a7fb11cSYuval Mintz 20970a7fb11cSYuval Mintz rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), 20980a7fb11cSYuval Mintz cdev->ll2->handle); 20990a7fb11cSYuval Mintz if (rc) { 21000a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to establish LL2 connection\n"); 21010a7fb11cSYuval Mintz goto release_fail; 21020a7fb11cSYuval Mintz } 21030a7fb11cSYuval Mintz 21040a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 21050a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 210688a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 21070a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), 21080a7fb11cSYuval Mintz cdev->ll2->handle, 21090a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 21100a7fb11cSYuval Mintz if (rc) { 21110a7fb11cSYuval Mintz DP_INFO(cdev, 21120a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 21130a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 21140a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 21150a7fb11cSYuval Mintz kfree(buffer->data); 21160a7fb11cSYuval Mintz list_del(&buffer->list); 21170a7fb11cSYuval Mintz kfree(buffer); 21180a7fb11cSYuval Mintz } else { 21190a7fb11cSYuval Mintz cdev->ll2->rx_cnt++; 21200a7fb11cSYuval Mintz } 21210a7fb11cSYuval Mintz } 21220a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 21230a7fb11cSYuval Mintz 21240a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) { 21250a7fb11cSYuval Mintz DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); 21260a7fb11cSYuval Mintz goto release_terminate; 21270a7fb11cSYuval Mintz } 21280a7fb11cSYuval Mintz 21290a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 21300a7fb11cSYuval Mintz DP_INFO(cdev, "Invalid Ethernet address\n"); 21310a7fb11cSYuval Mintz goto release_terminate; 21320a7fb11cSYuval Mintz } 21330a7fb11cSYuval Mintz 21341d6cff4fSYuval Mintz if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && 21351d6cff4fSYuval Mintz cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) { 21361d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 21371d6cff4fSYuval Mintz rc = qed_ll2_start_ooo(cdev, params); 21381d6cff4fSYuval Mintz if (rc) { 21391d6cff4fSYuval Mintz DP_INFO(cdev, 21401d6cff4fSYuval Mintz "Failed to initialize the OOO LL2 queue\n"); 21411d6cff4fSYuval Mintz goto release_terminate; 21421d6cff4fSYuval Mintz } 21431d6cff4fSYuval Mintz } 21441d6cff4fSYuval Mintz 21450a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 21460a7fb11cSYuval Mintz if (!p_ptt) { 21470a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 21480a7fb11cSYuval Mintz goto release_terminate; 21490a7fb11cSYuval Mintz } 21500a7fb11cSYuval Mintz 21510a7fb11cSYuval Mintz rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 21520a7fb11cSYuval Mintz params->ll2_mac_address); 21530a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 21540a7fb11cSYuval Mintz if (rc) { 21550a7fb11cSYuval Mintz DP_ERR(cdev, "Failed to allocate LLH filter\n"); 21560a7fb11cSYuval Mintz goto release_terminate_all; 21570a7fb11cSYuval Mintz } 21580a7fb11cSYuval Mintz 21590a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 21600a7fb11cSYuval Mintz return 0; 21610a7fb11cSYuval Mintz 21620a7fb11cSYuval Mintz release_terminate_all: 21630a7fb11cSYuval Mintz 21640a7fb11cSYuval Mintz release_terminate: 21650a7fb11cSYuval Mintz qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 21660a7fb11cSYuval Mintz release_fail: 21670a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 21680a7fb11cSYuval Mintz fail: 21690a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 21700a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 21710a7fb11cSYuval Mintz return -EINVAL; 21720a7fb11cSYuval Mintz } 21730a7fb11cSYuval Mintz 21740a7fb11cSYuval Mintz static int qed_ll2_stop(struct qed_dev *cdev) 21750a7fb11cSYuval Mintz { 21760a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 21770a7fb11cSYuval Mintz int rc; 21780a7fb11cSYuval Mintz 21790a7fb11cSYuval Mintz if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 21800a7fb11cSYuval Mintz return 0; 21810a7fb11cSYuval Mintz 21820a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 21830a7fb11cSYuval Mintz if (!p_ptt) { 21840a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 21850a7fb11cSYuval Mintz goto fail; 21860a7fb11cSYuval Mintz } 21870a7fb11cSYuval Mintz 21880a7fb11cSYuval Mintz qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 21890a7fb11cSYuval Mintz cdev->ll2_mac_address); 21900a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 21910a7fb11cSYuval Mintz eth_zero_addr(cdev->ll2_mac_address); 21920a7fb11cSYuval Mintz 21931d6cff4fSYuval Mintz if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && 21941d6cff4fSYuval Mintz cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) 21951d6cff4fSYuval Mintz qed_ll2_stop_ooo(cdev); 21961d6cff4fSYuval Mintz 21970a7fb11cSYuval Mintz rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), 21980a7fb11cSYuval Mintz cdev->ll2->handle); 21990a7fb11cSYuval Mintz if (rc) 22000a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 22010a7fb11cSYuval Mintz 22020a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 22030a7fb11cSYuval Mintz 22040a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 22050a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 22060a7fb11cSYuval Mintz 22070a7fb11cSYuval Mintz return rc; 22080a7fb11cSYuval Mintz fail: 22090a7fb11cSYuval Mintz return -EINVAL; 22100a7fb11cSYuval Mintz } 22110a7fb11cSYuval Mintz 22120a7fb11cSYuval Mintz static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb) 22130a7fb11cSYuval Mintz { 22140a7fb11cSYuval Mintz const skb_frag_t *frag; 22150a7fb11cSYuval Mintz int rc = -EINVAL, i; 22160a7fb11cSYuval Mintz dma_addr_t mapping; 22170a7fb11cSYuval Mintz u16 vlan = 0; 22180a7fb11cSYuval Mintz u8 flags = 0; 22190a7fb11cSYuval Mintz 22200a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 22210a7fb11cSYuval Mintz DP_INFO(cdev, "Cannot transmit a checksumed packet\n"); 22220a7fb11cSYuval Mintz return -EINVAL; 22230a7fb11cSYuval Mintz } 22240a7fb11cSYuval Mintz 22250a7fb11cSYuval Mintz if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 22260a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 22270a7fb11cSYuval Mintz 1 + skb_shinfo(skb)->nr_frags); 22280a7fb11cSYuval Mintz return -EINVAL; 22290a7fb11cSYuval Mintz } 22300a7fb11cSYuval Mintz 22310a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 22320a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 22330a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 22340a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 22350a7fb11cSYuval Mintz return -EINVAL; 22360a7fb11cSYuval Mintz } 22370a7fb11cSYuval Mintz 22380a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 22390a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 22400a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 22410a7fb11cSYuval Mintz flags |= BIT(CORE_TX_BD_FLAGS_IP_CSUM_SHIFT); 22420a7fb11cSYuval Mintz 22430a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 22440a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 22450a7fb11cSYuval Mintz flags |= BIT(CORE_TX_BD_FLAGS_VLAN_INSERTION_SHIFT); 22460a7fb11cSYuval Mintz } 22470a7fb11cSYuval Mintz 22480a7fb11cSYuval Mintz rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev), 22490a7fb11cSYuval Mintz cdev->ll2->handle, 22500a7fb11cSYuval Mintz 1 + skb_shinfo(skb)->nr_frags, 22511d6cff4fSYuval Mintz vlan, flags, 0, QED_LL2_TX_DEST_NW, 22521d6cff4fSYuval Mintz 0 /* RoCE FLAVOR */, 2253abd49676SRam Amrani mapping, skb->len, skb, 1); 22540a7fb11cSYuval Mintz if (rc) 22550a7fb11cSYuval Mintz goto err; 22560a7fb11cSYuval Mintz 22570a7fb11cSYuval Mintz for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 22580a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 22590a7fb11cSYuval Mintz if (!cdev->ll2->frags_mapped) { 22600a7fb11cSYuval Mintz mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 22610a7fb11cSYuval Mintz skb_frag_size(frag), 22620a7fb11cSYuval Mintz DMA_TO_DEVICE); 22630a7fb11cSYuval Mintz 22640a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, 22650a7fb11cSYuval Mintz mapping))) { 22660a7fb11cSYuval Mintz DP_NOTICE(cdev, 22670a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 22680ff18d2dSPan Bian rc = -ENOMEM; 22690a7fb11cSYuval Mintz goto err; 22700a7fb11cSYuval Mintz } 22710a7fb11cSYuval Mintz } else { 22720a7fb11cSYuval Mintz mapping = page_to_phys(skb_frag_page(frag)) | 22730a7fb11cSYuval Mintz frag->page_offset; 22740a7fb11cSYuval Mintz } 22750a7fb11cSYuval Mintz 22760a7fb11cSYuval Mintz rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), 22770a7fb11cSYuval Mintz cdev->ll2->handle, 22780a7fb11cSYuval Mintz mapping, 22790a7fb11cSYuval Mintz skb_frag_size(frag)); 22800a7fb11cSYuval Mintz 22810a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 22820a7fb11cSYuval Mintz * we can't free memory, will need to wait for completion. 22830a7fb11cSYuval Mintz */ 22840a7fb11cSYuval Mintz if (rc) 22850a7fb11cSYuval Mintz goto err2; 22860a7fb11cSYuval Mintz } 22870a7fb11cSYuval Mintz 22880a7fb11cSYuval Mintz return 0; 22890a7fb11cSYuval Mintz 22900a7fb11cSYuval Mintz err: 22910a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 22920a7fb11cSYuval Mintz 22930a7fb11cSYuval Mintz err2: 22940a7fb11cSYuval Mintz return rc; 22950a7fb11cSYuval Mintz } 22960a7fb11cSYuval Mintz 22970a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 22980a7fb11cSYuval Mintz { 22990a7fb11cSYuval Mintz if (!cdev->ll2) 23000a7fb11cSYuval Mintz return -EINVAL; 23010a7fb11cSYuval Mintz 23020a7fb11cSYuval Mintz return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 23030a7fb11cSYuval Mintz cdev->ll2->handle, stats); 23040a7fb11cSYuval Mintz } 23050a7fb11cSYuval Mintz 23060a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 23070a7fb11cSYuval Mintz .start = &qed_ll2_start, 23080a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 23090a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 23100a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 23110a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 23120a7fb11cSYuval Mintz }; 23130a7fb11cSYuval Mintz 23140a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 23150a7fb11cSYuval Mintz { 23160a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 23170a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 23180a7fb11cSYuval Mintz } 23190a7fb11cSYuval Mintz 23200a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 23210a7fb11cSYuval Mintz { 23220a7fb11cSYuval Mintz kfree(cdev->ll2); 23230a7fb11cSYuval Mintz cdev->ll2 = NULL; 23240a7fb11cSYuval Mintz } 2325