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/workqueue.h> 420a7fb11cSYuval Mintz #include <net/ipv6.h> 430a7fb11cSYuval Mintz #include <linux/bitops.h> 440a7fb11cSYuval Mintz #include <linux/delay.h> 450a7fb11cSYuval Mintz #include <linux/errno.h> 460a7fb11cSYuval Mintz #include <linux/etherdevice.h> 470a7fb11cSYuval Mintz #include <linux/io.h> 480a7fb11cSYuval Mintz #include <linux/list.h> 490a7fb11cSYuval Mintz #include <linux/mutex.h> 500a7fb11cSYuval Mintz #include <linux/spinlock.h> 510a7fb11cSYuval Mintz #include <linux/string.h> 520a7fb11cSYuval Mintz #include <linux/qed/qed_ll2_if.h> 530a7fb11cSYuval Mintz #include "qed.h" 540a7fb11cSYuval Mintz #include "qed_cxt.h" 550a7fb11cSYuval Mintz #include "qed_dev_api.h" 560a7fb11cSYuval Mintz #include "qed_hsi.h" 570a7fb11cSYuval Mintz #include "qed_hw.h" 580a7fb11cSYuval Mintz #include "qed_int.h" 590a7fb11cSYuval Mintz #include "qed_ll2.h" 600a7fb11cSYuval Mintz #include "qed_mcp.h" 611d6cff4fSYuval Mintz #include "qed_ooo.h" 620a7fb11cSYuval Mintz #include "qed_reg_addr.h" 630a7fb11cSYuval Mintz #include "qed_sp.h" 64b71b9afdSKalderon, Michal #include "qed_rdma.h" 650a7fb11cSYuval Mintz 660a7fb11cSYuval Mintz #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registred) 670a7fb11cSYuval Mintz #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registred) 680a7fb11cSYuval Mintz 690a7fb11cSYuval Mintz #define QED_LL2_TX_SIZE (256) 700a7fb11cSYuval Mintz #define QED_LL2_RX_SIZE (4096) 710a7fb11cSYuval Mintz 720a7fb11cSYuval Mintz struct qed_cb_ll2_info { 730a7fb11cSYuval Mintz int rx_cnt; 740a7fb11cSYuval Mintz u32 rx_size; 750a7fb11cSYuval Mintz u8 handle; 760a7fb11cSYuval Mintz 770a7fb11cSYuval Mintz /* Lock protecting LL2 buffer lists in sleepless context */ 780a7fb11cSYuval Mintz spinlock_t lock; 790a7fb11cSYuval Mintz struct list_head list; 800a7fb11cSYuval Mintz 810a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *cbs; 820a7fb11cSYuval Mintz void *cb_cookie; 830a7fb11cSYuval Mintz }; 840a7fb11cSYuval Mintz 850a7fb11cSYuval Mintz struct qed_ll2_buffer { 860a7fb11cSYuval Mintz struct list_head list; 870a7fb11cSYuval Mintz void *data; 880a7fb11cSYuval Mintz dma_addr_t phys_addr; 890a7fb11cSYuval Mintz }; 900a7fb11cSYuval Mintz 910518c12fSMichal Kalderon static void qed_ll2b_complete_tx_packet(void *cxt, 920a7fb11cSYuval Mintz u8 connection_handle, 930a7fb11cSYuval Mintz void *cookie, 940a7fb11cSYuval Mintz dma_addr_t first_frag_addr, 950a7fb11cSYuval Mintz bool b_last_fragment, 960a7fb11cSYuval Mintz bool b_last_packet) 970a7fb11cSYuval Mintz { 980518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 990a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1000a7fb11cSYuval Mintz struct sk_buff *skb = cookie; 1010a7fb11cSYuval Mintz 1020a7fb11cSYuval Mintz /* All we need to do is release the mapping */ 1030a7fb11cSYuval Mintz dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, 1040a7fb11cSYuval Mintz skb_headlen(skb), DMA_TO_DEVICE); 1050a7fb11cSYuval Mintz 1060a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) 1070a7fb11cSYuval Mintz cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, 1080a7fb11cSYuval Mintz b_last_fragment); 1090a7fb11cSYuval Mintz 1100a7fb11cSYuval Mintz dev_kfree_skb_any(skb); 1110a7fb11cSYuval Mintz } 1120a7fb11cSYuval Mintz 1130a7fb11cSYuval Mintz static int qed_ll2_alloc_buffer(struct qed_dev *cdev, 1140a7fb11cSYuval Mintz u8 **data, dma_addr_t *phys_addr) 1150a7fb11cSYuval Mintz { 1160a7fb11cSYuval Mintz *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); 1170a7fb11cSYuval Mintz if (!(*data)) { 1180a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); 1190a7fb11cSYuval Mintz return -ENOMEM; 1200a7fb11cSYuval Mintz } 1210a7fb11cSYuval Mintz 1220a7fb11cSYuval Mintz *phys_addr = dma_map_single(&cdev->pdev->dev, 1230a7fb11cSYuval Mintz ((*data) + NET_SKB_PAD), 1240a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1250a7fb11cSYuval Mintz if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { 1260a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to map LL2 buffer data\n"); 1270a7fb11cSYuval Mintz kfree((*data)); 1280a7fb11cSYuval Mintz return -ENOMEM; 1290a7fb11cSYuval Mintz } 1300a7fb11cSYuval Mintz 1310a7fb11cSYuval Mintz return 0; 1320a7fb11cSYuval Mintz } 1330a7fb11cSYuval Mintz 1340a7fb11cSYuval Mintz static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, 1350a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer) 1360a7fb11cSYuval Mintz { 1370a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 1380a7fb11cSYuval Mintz 1390a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 1400a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 1410a7fb11cSYuval Mintz kfree(buffer->data); 1420a7fb11cSYuval Mintz list_del(&buffer->list); 1430a7fb11cSYuval Mintz 1440a7fb11cSYuval Mintz cdev->ll2->rx_cnt--; 1450a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) 1460a7fb11cSYuval Mintz DP_INFO(cdev, "All LL2 entries were removed\n"); 1470a7fb11cSYuval Mintz 1480a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 1490a7fb11cSYuval Mintz 1500a7fb11cSYuval Mintz return 0; 1510a7fb11cSYuval Mintz } 1520a7fb11cSYuval Mintz 1530a7fb11cSYuval Mintz static void qed_ll2_kill_buffers(struct qed_dev *cdev) 1540a7fb11cSYuval Mintz { 1550a7fb11cSYuval Mintz struct qed_ll2_buffer *buffer, *tmp_buffer; 1560a7fb11cSYuval Mintz 1570a7fb11cSYuval Mintz list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) 1580a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 1590a7fb11cSYuval Mintz } 1600a7fb11cSYuval Mintz 1610518c12fSMichal Kalderon void qed_ll2b_complete_rx_packet(void *cxt, struct qed_ll2_comp_rx_data *data) 1620a7fb11cSYuval Mintz { 1630518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 16468be910cSMintz, Yuval struct qed_ll2_buffer *buffer = data->cookie; 1650a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1660a7fb11cSYuval Mintz dma_addr_t new_phys_addr; 1670a7fb11cSYuval Mintz struct sk_buff *skb; 1680a7fb11cSYuval Mintz bool reuse = false; 1690a7fb11cSYuval Mintz int rc = -EINVAL; 1700a7fb11cSYuval Mintz u8 *new_data; 1710a7fb11cSYuval Mintz 1720a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 1730a7fb11cSYuval Mintz (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), 1740a7fb11cSYuval 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", 17568be910cSMintz, Yuval (u64)data->rx_buf_addr, 17668be910cSMintz, Yuval data->u.placement_offset, 17768be910cSMintz, Yuval data->length.packet_length, 17868be910cSMintz, Yuval data->parse_flags, 17968be910cSMintz, Yuval data->vlan, data->opaque_data_0, data->opaque_data_1); 1800a7fb11cSYuval Mintz 1810a7fb11cSYuval Mintz if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { 1820a7fb11cSYuval Mintz print_hex_dump(KERN_INFO, "", 1830a7fb11cSYuval Mintz DUMP_PREFIX_OFFSET, 16, 1, 18468be910cSMintz, Yuval buffer->data, data->length.packet_length, false); 1850a7fb11cSYuval Mintz } 1860a7fb11cSYuval Mintz 1870a7fb11cSYuval Mintz /* Determine if data is valid */ 18868be910cSMintz, Yuval if (data->length.packet_length < ETH_HLEN) 1890a7fb11cSYuval Mintz reuse = true; 1900a7fb11cSYuval Mintz 1910a7fb11cSYuval Mintz /* Allocate a replacement for buffer; Reuse upon failure */ 1920a7fb11cSYuval Mintz if (!reuse) 1930a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, 1940a7fb11cSYuval Mintz &new_phys_addr); 1950a7fb11cSYuval Mintz 1960a7fb11cSYuval Mintz /* If need to reuse or there's no replacement buffer, repost this */ 1970a7fb11cSYuval Mintz if (rc) 1980a7fb11cSYuval Mintz goto out_post; 199752ecb2dSMintz, Yuval dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 200752ecb2dSMintz, Yuval cdev->ll2->rx_size, DMA_FROM_DEVICE); 2010a7fb11cSYuval Mintz 2020a7fb11cSYuval Mintz skb = build_skb(buffer->data, 0); 2030a7fb11cSYuval Mintz if (!skb) { 2040a7fb11cSYuval Mintz rc = -ENOMEM; 2050a7fb11cSYuval Mintz goto out_post; 2060a7fb11cSYuval Mintz } 2070a7fb11cSYuval Mintz 20868be910cSMintz, Yuval data->u.placement_offset += NET_SKB_PAD; 20968be910cSMintz, Yuval skb_reserve(skb, data->u.placement_offset); 21068be910cSMintz, Yuval skb_put(skb, data->length.packet_length); 2110a7fb11cSYuval Mintz skb_checksum_none_assert(skb); 2120a7fb11cSYuval Mintz 2130a7fb11cSYuval Mintz /* Get parital ethernet information instead of eth_type_trans(), 2140a7fb11cSYuval Mintz * Since we don't have an associated net_device. 2150a7fb11cSYuval Mintz */ 2160a7fb11cSYuval Mintz skb_reset_mac_header(skb); 2170a7fb11cSYuval Mintz skb->protocol = eth_hdr(skb)->h_proto; 2180a7fb11cSYuval Mintz 2190a7fb11cSYuval Mintz /* Pass SKB onward */ 2200a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { 22168be910cSMintz, Yuval if (data->vlan) 22268be910cSMintz, Yuval __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 22368be910cSMintz, Yuval data->vlan); 2240a7fb11cSYuval Mintz cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, 22568be910cSMintz, Yuval data->opaque_data_0, 22668be910cSMintz, Yuval data->opaque_data_1); 2270a7fb11cSYuval Mintz } 2280a7fb11cSYuval Mintz 2290a7fb11cSYuval Mintz /* Update Buffer information and update FW producer */ 2300a7fb11cSYuval Mintz buffer->data = new_data; 2310a7fb11cSYuval Mintz buffer->phys_addr = new_phys_addr; 2320a7fb11cSYuval Mintz 2330a7fb11cSYuval Mintz out_post: 2340a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle, 2350a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2360a7fb11cSYuval Mintz 2370a7fb11cSYuval Mintz if (rc) 2380a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 2390a7fb11cSYuval Mintz } 2400a7fb11cSYuval Mintz 2410a7fb11cSYuval Mintz static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2420a7fb11cSYuval Mintz u8 connection_handle, 2430a7fb11cSYuval Mintz bool b_lock, 2440a7fb11cSYuval Mintz bool b_only_active) 2450a7fb11cSYuval Mintz { 2460a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2470a7fb11cSYuval Mintz 2480a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2490a7fb11cSYuval Mintz return NULL; 2500a7fb11cSYuval Mintz 2510a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2520a7fb11cSYuval Mintz return NULL; 2530a7fb11cSYuval Mintz 2540a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2550a7fb11cSYuval Mintz 2560a7fb11cSYuval Mintz if (b_only_active) { 2570a7fb11cSYuval Mintz if (b_lock) 2580a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2590a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2600a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2610a7fb11cSYuval Mintz if (b_lock) 2620a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2630a7fb11cSYuval Mintz } else { 2640a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2650a7fb11cSYuval Mintz } 2660a7fb11cSYuval Mintz 2670a7fb11cSYuval Mintz return p_ret; 2680a7fb11cSYuval Mintz } 2690a7fb11cSYuval Mintz 2700a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2710a7fb11cSYuval Mintz u8 connection_handle) 2720a7fb11cSYuval Mintz { 2730a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2740a7fb11cSYuval Mintz } 2750a7fb11cSYuval Mintz 2760a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2770a7fb11cSYuval Mintz u8 connection_handle) 2780a7fb11cSYuval Mintz { 2790a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2800a7fb11cSYuval Mintz } 2810a7fb11cSYuval Mintz 2820a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2830a7fb11cSYuval Mintz *p_hwfn, 2840a7fb11cSYuval Mintz u8 connection_handle) 2850a7fb11cSYuval Mintz { 2860a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2870a7fb11cSYuval Mintz } 2880a7fb11cSYuval Mintz 2890a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 2900a7fb11cSYuval Mintz { 2910a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 2920a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 2930a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 2940a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 295abd49676SRam Amrani dma_addr_t tx_frag; 2960a7fb11cSYuval Mintz 2970a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 2980a7fb11cSYuval Mintz if (!p_ll2_conn) 2990a7fb11cSYuval Mintz return; 3000a7fb11cSYuval Mintz 3010a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 3020a7fb11cSYuval Mintz 3030a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 3040a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3050a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3060a7fb11cSYuval Mintz if (!p_pkt) 3070a7fb11cSYuval Mintz break; 3080a7fb11cSYuval Mintz 3090a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3100a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 3110a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 31213c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) { 3131d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 3141d6cff4fSYuval Mintz 3151d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3161d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3171d6cff4fSYuval Mintz p_buffer); 3181d6cff4fSYuval Mintz } else { 3190a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3200a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3211d6cff4fSYuval Mintz b_last_frag = 3221d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 323abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3240518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 325abd49676SRam Amrani p_ll2_conn->my_id, 326abd49676SRam Amrani p_pkt->cookie, 327abd49676SRam Amrani tx_frag, 328abd49676SRam Amrani b_last_frag, 329abd49676SRam Amrani b_last_packet); 3301d6cff4fSYuval Mintz } 3310a7fb11cSYuval Mintz } 3320a7fb11cSYuval Mintz } 3330a7fb11cSYuval Mintz 3340a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3350a7fb11cSYuval Mintz { 3360a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3370a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3380a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3390a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3400a7fb11cSYuval Mintz bool b_last_frag = false; 3410a7fb11cSYuval Mintz unsigned long flags; 3420a7fb11cSYuval Mintz int rc = -EINVAL; 3430a7fb11cSYuval Mintz 3440a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3450a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3460a7fb11cSYuval Mintz rc = -EBUSY; 3470a7fb11cSYuval Mintz goto out; 3480a7fb11cSYuval Mintz } 3490a7fb11cSYuval Mintz 3500a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3510a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3520a7fb11cSYuval Mintz while (num_bds) { 3530a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3540a7fb11cSYuval Mintz goto out; 3550a7fb11cSYuval Mintz 3560a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3570a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3580a7fb11cSYuval Mintz if (!p_pkt) 3590a7fb11cSYuval Mintz goto out; 3600a7fb11cSYuval Mintz 3610a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3620a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3630a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3640a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3650a7fb11cSYuval Mintz 3660a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3670a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3680a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3690a7fb11cSYuval Mintz goto out; 3700a7fb11cSYuval Mintz } 3710a7fb11cSYuval Mintz 3720a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3730a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3740a7fb11cSYuval Mintz while (num_bds_in_packet--) 3750a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3760a7fb11cSYuval Mintz 3770a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3780a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3790a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3800a7fb11cSYuval Mintz 3810a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3820518c12fSMichal Kalderon 3830518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 384abd49676SRam Amrani p_ll2_conn->my_id, 385abd49676SRam Amrani p_pkt->cookie, 3860518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 387abd49676SRam Amrani b_last_frag, !num_bds); 3880518c12fSMichal Kalderon 3890a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3900a7fb11cSYuval Mintz } 3910a7fb11cSYuval Mintz 3920a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 3930a7fb11cSYuval Mintz rc = 0; 3940a7fb11cSYuval Mintz out: 3950a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3960a7fb11cSYuval Mintz return rc; 3970a7fb11cSYuval Mintz } 3980a7fb11cSYuval Mintz 3990518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 400abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 4010518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 402abd49676SRam Amrani { 4030518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 4040518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 4050518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 4060518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 4070518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 4080518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 409abd49676SRam Amrani } 410abd49676SRam Amrani 41168be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 41268be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 41368be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 41468be910cSMintz, Yuval { 41568be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 41668be910cSMintz, Yuval data->length.packet_length = 41768be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 41868be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 41968be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 42068be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 42168be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 42268be910cSMintz, Yuval } 42368be910cSMintz, Yuval 42468be910cSMintz, Yuval static int 42568be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4260a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4270a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 42868be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4290a7fb11cSYuval Mintz { 4300a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4310a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 43268be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4330a7fb11cSYuval Mintz 4340a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4350a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4360a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4370a7fb11cSYuval Mintz if (!p_pkt) { 4380a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 43968be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 44013c54771SMintz, Yuval p_ll2_conn->input.conn_type); 44168be910cSMintz, Yuval 4420a7fb11cSYuval Mintz return -EIO; 4430a7fb11cSYuval Mintz } 4440a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4450a7fb11cSYuval Mintz 4460518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 44768be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 4480518c12fSMichal Kalderon else 4490518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 4500a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 4510a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4520a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 45368be910cSMintz, Yuval 4540a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 4550a7fb11cSYuval Mintz 45668be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 45768be910cSMintz, Yuval data.cookie = p_pkt->cookie; 45868be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 45968be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 46068be910cSMintz, Yuval 4611df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4620518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 4630518c12fSMichal Kalderon 4641df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4650a7fb11cSYuval Mintz 4660a7fb11cSYuval Mintz return 0; 4670a7fb11cSYuval Mintz } 4680a7fb11cSYuval Mintz 4690a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 4700a7fb11cSYuval Mintz { 47113c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 4720a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4730a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 4740a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 4750a7fb11cSYuval Mintz unsigned long flags = 0; 4760a7fb11cSYuval Mintz int rc = 0; 4770a7fb11cSYuval Mintz 4780a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 4790a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 4800a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 4810a7fb11cSYuval Mintz 4820a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 4830a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 4840a7fb11cSYuval Mintz 48513c54771SMintz, Yuval cqe = 48613c54771SMintz, Yuval (union core_rx_cqe_union *) 48713c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 4880a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 4890a7fb11cSYuval Mintz 4900a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 4910a7fb11cSYuval Mintz QED_MSG_LL2, 4920a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 4930a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 4940a7fb11cSYuval Mintz 4950a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 4960a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 4970a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n"); 4980a7fb11cSYuval Mintz rc = -EINVAL; 4990a7fb11cSYuval Mintz break; 500abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5010a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 50268be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5031df2adedSRam Amrani cqe, &flags, 5041df2adedSRam Amrani b_last_cqe); 5050a7fb11cSYuval Mintz break; 5060a7fb11cSYuval Mintz default: 5070a7fb11cSYuval Mintz rc = -EIO; 5080a7fb11cSYuval Mintz } 5090a7fb11cSYuval Mintz } 5100a7fb11cSYuval Mintz 5110a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5120a7fb11cSYuval Mintz return rc; 5130a7fb11cSYuval Mintz } 5140a7fb11cSYuval Mintz 5158c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5160a7fb11cSYuval Mintz { 5170a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5180a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5190a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5200a7fb11cSYuval Mintz 5210a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5220a7fb11cSYuval Mintz if (!p_ll2_conn) 5230a7fb11cSYuval Mintz return; 5240a7fb11cSYuval Mintz 5250a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5260a7fb11cSYuval Mintz 5270a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5280a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5290a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5300a7fb11cSYuval Mintz if (!p_pkt) 5310a7fb11cSYuval Mintz break; 5320a7fb11cSYuval Mintz 533b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5340a7fb11cSYuval Mintz 53513c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) { 5361d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5371d6cff4fSYuval Mintz 5381d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5391d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5401d6cff4fSYuval Mintz p_buffer); 5411d6cff4fSYuval Mintz } else { 54254f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 54354f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 54454f19f07SMintz, Yuval bool b_last; 5450a7fb11cSYuval Mintz 5460a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 54754f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 54854f19f07SMintz, Yuval p_ll2_conn->my_id, 54954f19f07SMintz, Yuval cookie, 55054f19f07SMintz, Yuval rx_buf_addr, b_last); 5510a7fb11cSYuval Mintz } 5520a7fb11cSYuval Mintz } 5531d6cff4fSYuval Mintz } 5541d6cff4fSYuval Mintz 5551d6cff4fSYuval Mintz static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags) 5561d6cff4fSYuval Mintz { 5571d6cff4fSYuval Mintz u8 bd_flags = 0; 5581d6cff4fSYuval Mintz 5591d6cff4fSYuval Mintz if (GET_FIELD(parse_flags, PARSING_AND_ERR_FLAGS_TAG8021QEXIST)) 560be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_VLAN_INSERTION, 1); 5611d6cff4fSYuval Mintz 5621d6cff4fSYuval Mintz return bd_flags; 5631d6cff4fSYuval Mintz } 5641d6cff4fSYuval Mintz 5651d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 5661d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 5671d6cff4fSYuval Mintz { 5681d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5691d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 5701d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5711d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 5721d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5731d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5741d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5751d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 5761d6cff4fSYuval Mintz u8 placement_offset = 0; 5771d6cff4fSYuval Mintz u8 cqe_type; 5781d6cff4fSYuval Mintz 5791d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5801d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5811d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 5821d6cff4fSYuval Mintz return 0; 5831d6cff4fSYuval Mintz 5841d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 5851d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 5861d6cff4fSYuval Mintz 5871d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 5881d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5891d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 5901d6cff4fSYuval Mintz 5911d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 5921d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 5931d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 5941d6cff4fSYuval Mintz cqe_type); 5951d6cff4fSYuval Mintz return -EINVAL; 5961d6cff4fSYuval Mintz } 5971d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 5981d6cff4fSYuval Mintz 5991d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6001d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6011d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6021d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6031d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6041d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6051d6cff4fSYuval Mintz iscsi_ooo); 6061d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6071d6cff4fSYuval Mintz 6081d6cff4fSYuval Mintz /* Process delete isle first */ 6091d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6101d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6111d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6121d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6131d6cff4fSYuval Mintz 6141d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6151d6cff4fSYuval Mintz continue; 6161d6cff4fSYuval Mintz 6171d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6181d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6191d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6201d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6211d6cff4fSYuval Mintz ); 6221d6cff4fSYuval Mintz return -EIO; 6231d6cff4fSYuval Mintz } 6241d6cff4fSYuval Mintz 6251d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6261d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6271d6cff4fSYuval Mintz 6281d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 6291d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 6301d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 6311d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 6321d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 6331d6cff4fSYuval Mintz if (!p_pkt) { 6341d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6351d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 6361d6cff4fSYuval Mintz return -EIO; 6371d6cff4fSYuval Mintz } 6381d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 6391d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 6401d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 6411d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 6421d6cff4fSYuval Mintz p_buffer->vlan = vlan; 6431d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 6441d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 6451d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 6461d6cff4fSYuval Mintz 6471d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 6481d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 6491d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 6501d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6511d6cff4fSYuval Mintz cid, 6521d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6531d6cff4fSYuval Mintz p_buffer); 6541d6cff4fSYuval Mintz break; 6551d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 6561d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 6571d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6581d6cff4fSYuval Mintz cid, 6591d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6601d6cff4fSYuval Mintz p_buffer, 6611d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 6621d6cff4fSYuval Mintz break; 6631d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 6641d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 6651d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6661d6cff4fSYuval Mintz cid, 6671d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 6681d6cff4fSYuval Mintz p_buffer, 6691d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 6701d6cff4fSYuval Mintz break; 6711d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 6721d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 6731d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6741d6cff4fSYuval Mintz cid, 6751d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 6761d6cff4fSYuval Mintz 1, 6771d6cff4fSYuval Mintz p_buffer, 6781d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 6791d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 6801d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6811d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 6821d6cff4fSYuval Mintz break; 6831d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 6841d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 6851d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 6861d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 6871d6cff4fSYuval Mintz p_buffer, true); 6881d6cff4fSYuval Mintz break; 6891d6cff4fSYuval Mintz } 6901d6cff4fSYuval Mintz } else { 6911d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6921d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 6931d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 6941d6cff4fSYuval Mintz } 6951d6cff4fSYuval Mintz } 6961d6cff4fSYuval Mintz 6971d6cff4fSYuval Mintz return 0; 6981d6cff4fSYuval Mintz } 6991d6cff4fSYuval Mintz 7001d6cff4fSYuval Mintz static void 7011d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7021d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7031d6cff4fSYuval Mintz { 7047c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7051d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7061d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7071d6cff4fSYuval Mintz dma_addr_t first_frag; 7081d6cff4fSYuval Mintz u16 parse_flags; 7091d6cff4fSYuval Mintz u8 bd_flags; 7107c7973b2SMintz, Yuval int rc; 7111d6cff4fSYuval Mintz 7121d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7131d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7141d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7151d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7161d6cff4fSYuval Mintz bd_flags = 0; 7171d6cff4fSYuval Mintz 7181d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7191d6cff4fSYuval Mintz p_buffer->placement_offset; 7201d6cff4fSYuval Mintz parse_flags = p_buffer->parse_flags; 7211d6cff4fSYuval Mintz bd_flags = qed_ll2_convert_rx_parse_to_tx_flags(parse_flags); 722be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 723be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 7241d6cff4fSYuval Mintz 7257c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 7267c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 7277c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 7287c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 7297c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 73013c54771SMintz, Yuval tx_pkt.tx_dest = p_ll2_conn->tx_dest; 7317c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 7327c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 7337c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 7347c7973b2SMintz, Yuval 7357c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 7367c7973b2SMintz, Yuval &tx_pkt, true); 7371d6cff4fSYuval Mintz if (rc) { 7381d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 7391d6cff4fSYuval Mintz p_buffer, false); 7401d6cff4fSYuval Mintz break; 7411d6cff4fSYuval Mintz } 7421d6cff4fSYuval Mintz } 7431d6cff4fSYuval Mintz } 7441d6cff4fSYuval Mintz 7451d6cff4fSYuval Mintz static void 7461d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 7471d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7481d6cff4fSYuval Mintz { 7491d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7501d6cff4fSYuval Mintz int rc; 7511d6cff4fSYuval Mintz 7521d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 7531d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7541d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 7551d6cff4fSYuval Mintz p_ll2_conn->my_id, 7561d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 7571d6cff4fSYuval Mintz 0, p_buffer, true); 7581d6cff4fSYuval Mintz if (rc) { 7591d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 7601d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 7611d6cff4fSYuval Mintz break; 7621d6cff4fSYuval Mintz } 7631d6cff4fSYuval Mintz } 7641d6cff4fSYuval Mintz } 7651d6cff4fSYuval Mintz 7661d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 7671d6cff4fSYuval Mintz { 7681d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 7691d6cff4fSYuval Mintz int rc; 7701d6cff4fSYuval Mintz 7711d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 7721d6cff4fSYuval Mintz if (rc) 7731d6cff4fSYuval Mintz return rc; 7741d6cff4fSYuval Mintz 7751d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 7761d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 7771d6cff4fSYuval Mintz 7781d6cff4fSYuval Mintz return 0; 7791d6cff4fSYuval Mintz } 7801d6cff4fSYuval Mintz 7811d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 7821d6cff4fSYuval Mintz { 7831d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 7841d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 7851d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 7861d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7871d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 7881d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 7891d6cff4fSYuval Mintz int rc; 7901d6cff4fSYuval Mintz 7911d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 7921d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 7931d6cff4fSYuval Mintz 7941d6cff4fSYuval Mintz if (!num_bds) 7951d6cff4fSYuval Mintz return 0; 7961d6cff4fSYuval Mintz 7971d6cff4fSYuval Mintz while (num_bds) { 7981d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 7991d6cff4fSYuval Mintz return -EINVAL; 8001d6cff4fSYuval Mintz 8011d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8021d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8031d6cff4fSYuval Mintz if (!p_pkt) 8041d6cff4fSYuval Mintz return -EINVAL; 8051d6cff4fSYuval Mintz 8061d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8071d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8081d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8091d6cff4fSYuval Mintz p_pkt->bd_used); 8101d6cff4fSYuval Mintz return -EINVAL; 8111d6cff4fSYuval Mintz } 8121d6cff4fSYuval Mintz 8131d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 8141d6cff4fSYuval Mintz 8151d6cff4fSYuval Mintz num_bds--; 8161d6cff4fSYuval Mintz p_tx->bds_idx++; 8171d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 8181d6cff4fSYuval Mintz 8191d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 8201d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 8211d6cff4fSYuval Mintz 8221d6cff4fSYuval Mintz if (b_dont_submit_rx) { 8231d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 8241d6cff4fSYuval Mintz p_buffer); 8251d6cff4fSYuval Mintz continue; 8261d6cff4fSYuval Mintz } 8271d6cff4fSYuval Mintz 8281d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 8291d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 8301d6cff4fSYuval Mintz p_buffer, true); 8311d6cff4fSYuval Mintz if (rc != 0) { 8321d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8331d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8341d6cff4fSYuval Mintz b_dont_submit_rx = true; 8351d6cff4fSYuval Mintz } 8361d6cff4fSYuval Mintz } 8371d6cff4fSYuval Mintz 8381d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8391d6cff4fSYuval Mintz 8401d6cff4fSYuval Mintz return 0; 8411d6cff4fSYuval Mintz } 8421d6cff4fSYuval Mintz 8431d6cff4fSYuval Mintz static void qed_ll2_stop_ooo(struct qed_dev *cdev) 8441d6cff4fSYuval Mintz { 8451d6cff4fSYuval Mintz struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 8461d6cff4fSYuval Mintz u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 8471d6cff4fSYuval Mintz 8481d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n", 8491d6cff4fSYuval Mintz *handle); 8501d6cff4fSYuval Mintz 8511d6cff4fSYuval Mintz qed_ll2_terminate_connection(hwfn, *handle); 8521d6cff4fSYuval Mintz qed_ll2_release_connection(hwfn, *handle); 8531d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 8541d6cff4fSYuval Mintz } 8551d6cff4fSYuval Mintz 8560a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 8570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 8580a7fb11cSYuval Mintz u8 action_on_error) 8590a7fb11cSYuval Mintz { 86013c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 8610a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 8620a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 8630a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 8640a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 8650a7fb11cSYuval Mintz u16 cqe_pbl_size; 8660a7fb11cSYuval Mintz int rc = 0; 8670a7fb11cSYuval Mintz 8680a7fb11cSYuval Mintz /* Get SPQ entry */ 8690a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 8700a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 8710a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 8720a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 8730a7fb11cSYuval Mintz 8740a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 8750a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 8760a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 8770a7fb11cSYuval Mintz if (rc) 8780a7fb11cSYuval Mintz return rc; 8790a7fb11cSYuval Mintz 8800a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 8810a7fb11cSYuval Mintz 8820a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 8830a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 8840a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 8850a7fb11cSYuval Mintz 88613c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 88713c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 8880a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 8890a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 8900a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 8910a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 8920a7fb11cSYuval Mintz 89313c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 89413c54771SMintz, Yuval p_ramrod->inner_vlan_removal_en = p_ll2_conn->input.rx_vlan_removal_en; 8950a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 8961d6cff4fSYuval Mintz p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_ISCSI_OOO) ? 0 8971d6cff4fSYuval Mintz : 1; 8980a7fb11cSYuval Mintz 8990a7fb11cSYuval Mintz if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) && 9000a7fb11cSYuval Mintz p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE)) { 9010a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 9020a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 9030a7fb11cSYuval Mintz } else { 9040a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 9050a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 9060a7fb11cSYuval Mintz } 9070a7fb11cSYuval Mintz 9080a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 90913c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 9100a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 9110a7fb11cSYuval Mintz } 9120a7fb11cSYuval Mintz 9130a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 9140a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9150a7fb11cSYuval Mintz { 91613c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9170a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 9180a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 9190a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9200a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9210a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 9220a7fb11cSYuval Mintz int rc = -EINVAL; 9230a7fb11cSYuval Mintz 9240a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 9250a7fb11cSYuval Mintz return 0; 9260a7fb11cSYuval Mintz 92713c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) 9281d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 9291d6cff4fSYuval Mintz else 9301d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 9311d6cff4fSYuval Mintz 9320a7fb11cSYuval Mintz /* Get SPQ entry */ 9330a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9340a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9350a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9360a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9370a7fb11cSYuval Mintz 9380a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9390a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 9400a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9410a7fb11cSYuval Mintz if (rc) 9420a7fb11cSYuval Mintz return rc; 9430a7fb11cSYuval Mintz 9440a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 9450a7fb11cSYuval Mintz 9460a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9470a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 94813c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 9490a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 9500a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 9510a7fb11cSYuval Mintz 9520a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 9530a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 9540a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 9550a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 9560a7fb11cSYuval Mintz 95713c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 958b5a9ee7cSAriel Elior case LB_TC: 959b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 960b5a9ee7cSAriel Elior break; 961b5a9ee7cSAriel Elior case OOO_LB_TC: 962b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 963827d240aSColin Ian King break; 964b5a9ee7cSAriel Elior default: 965b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 966b5a9ee7cSAriel Elior break; 967b5a9ee7cSAriel Elior } 968b5a9ee7cSAriel Elior 9690a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 9700a7fb11cSYuval Mintz 9710a7fb11cSYuval Mintz switch (conn_type) { 9721e128c81SArun Easi case QED_LL2_TYPE_FCOE: 9731e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 9741e128c81SArun Easi break; 9750a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI: 9760a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI_OOO: 9770a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ISCSI; 9780a7fb11cSYuval Mintz break; 9790a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 9800a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 9810a7fb11cSYuval Mintz break; 9820a7fb11cSYuval Mintz default: 9830a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 9840a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 9850a7fb11cSYuval Mintz } 9860a7fb11cSYuval Mintz 98713c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 98813c54771SMintz, Yuval 9890a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 9900a7fb11cSYuval Mintz } 9910a7fb11cSYuval Mintz 9920a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 9930a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9940a7fb11cSYuval Mintz { 9950a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 9960a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9970a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9980a7fb11cSYuval Mintz int rc = -EINVAL; 9990a7fb11cSYuval Mintz 10000a7fb11cSYuval Mintz /* Get SPQ entry */ 10010a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10020a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10030a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10040a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10050a7fb11cSYuval Mintz 10060a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10070a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 10080a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10090a7fb11cSYuval Mintz if (rc) 10100a7fb11cSYuval Mintz return rc; 10110a7fb11cSYuval Mintz 10120a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 10130a7fb11cSYuval Mintz 10140a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 10150a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 10160a7fb11cSYuval Mintz 10170a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10180a7fb11cSYuval Mintz } 10190a7fb11cSYuval Mintz 10200a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 10210a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10220a7fb11cSYuval Mintz { 10230a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10240a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10250a7fb11cSYuval Mintz int rc = -EINVAL; 10260a7fb11cSYuval Mintz 10270a7fb11cSYuval Mintz /* Get SPQ entry */ 10280a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10290a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10300a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10310a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10320a7fb11cSYuval Mintz 10330a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10340a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 10350a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10360a7fb11cSYuval Mintz if (rc) 10370a7fb11cSYuval Mintz return rc; 10380a7fb11cSYuval Mintz 10390a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10400a7fb11cSYuval Mintz } 10410a7fb11cSYuval Mintz 10420a7fb11cSYuval Mintz static int 10430a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 104413c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 10450a7fb11cSYuval Mintz { 10460a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 10470a7fb11cSYuval Mintz u32 capacity; 10480a7fb11cSYuval Mintz int rc = 0; 10490a7fb11cSYuval Mintz 105013c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 10510a7fb11cSYuval Mintz goto out; 10520a7fb11cSYuval Mintz 10530a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 10540a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 10550a7fb11cSYuval Mintz QED_CHAIN_MODE_NEXT_PTR, 10560a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 105713c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 10580a7fb11cSYuval Mintz sizeof(struct core_rx_bd), 10591a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rxq_chain, NULL); 10600a7fb11cSYuval Mintz if (rc) { 10610a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 10620a7fb11cSYuval Mintz goto out; 10630a7fb11cSYuval Mintz } 10640a7fb11cSYuval Mintz 10650a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 10660a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 10670a7fb11cSYuval Mintz GFP_KERNEL); 10680a7fb11cSYuval Mintz if (!p_descq) { 10690a7fb11cSYuval Mintz rc = -ENOMEM; 10700a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 10710a7fb11cSYuval Mintz goto out; 10720a7fb11cSYuval Mintz } 10730a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 10740a7fb11cSYuval Mintz 10750a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 10760a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 10770a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 10780a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 107913c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 10800a7fb11cSYuval Mintz sizeof(struct core_rx_fast_path_cqe), 10811a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rcq_chain, NULL); 10820a7fb11cSYuval Mintz if (rc) { 10830a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 10840a7fb11cSYuval Mintz goto out; 10850a7fb11cSYuval Mintz } 10860a7fb11cSYuval Mintz 10870a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 10880a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 108913c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 10900a7fb11cSYuval Mintz 10910a7fb11cSYuval Mintz out: 10920a7fb11cSYuval Mintz return rc; 10930a7fb11cSYuval Mintz } 10940a7fb11cSYuval Mintz 10950a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 109613c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 10970a7fb11cSYuval Mintz { 10980a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 10990a7fb11cSYuval Mintz u32 capacity; 11000a7fb11cSYuval Mintz int rc = 0; 11010a7fb11cSYuval Mintz 110213c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 11030a7fb11cSYuval Mintz goto out; 11040a7fb11cSYuval Mintz 11050a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11060a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11070a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 11080a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 110913c54771SMintz, Yuval p_ll2_info->input.tx_num_desc, 11100a7fb11cSYuval Mintz sizeof(struct core_tx_bd), 11111a4a6975SMintz, Yuval &p_ll2_info->tx_queue.txq_chain, NULL); 11120a7fb11cSYuval Mintz if (rc) 11130a7fb11cSYuval Mintz goto out; 11140a7fb11cSYuval Mintz 11150a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 11160a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_tx_packet), 11170a7fb11cSYuval Mintz GFP_KERNEL); 11180a7fb11cSYuval Mintz if (!p_descq) { 11190a7fb11cSYuval Mintz rc = -ENOMEM; 11200a7fb11cSYuval Mintz goto out; 11210a7fb11cSYuval Mintz } 11220a7fb11cSYuval Mintz p_ll2_info->tx_queue.descq_array = p_descq; 11230a7fb11cSYuval Mintz 11240a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 11250a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 112613c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 11270a7fb11cSYuval Mintz 11280a7fb11cSYuval Mintz out: 11290a7fb11cSYuval Mintz if (rc) 11300a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 11310a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 113213c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 11330a7fb11cSYuval Mintz return rc; 11340a7fb11cSYuval Mintz } 11350a7fb11cSYuval Mintz 113613c54771SMintz, Yuval static int 113713c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 113813c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 113913c54771SMintz, Yuval { 114013c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 114113c54771SMintz, Yuval void *p_virt; 114213c54771SMintz, Yuval u16 buf_idx; 114313c54771SMintz, Yuval int rc = 0; 114413c54771SMintz, Yuval 114513c54771SMintz, Yuval if (p_ll2_info->input.conn_type != QED_LL2_TYPE_ISCSI_OOO) 114613c54771SMintz, Yuval return rc; 114713c54771SMintz, Yuval 114813c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 114913c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 115013c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 115113c54771SMintz, Yuval 115213c54771SMintz, Yuval if (!num_desc) 115313c54771SMintz, Yuval return -EINVAL; 115413c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 115513c54771SMintz, Yuval } 115613c54771SMintz, Yuval 115713c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 115813c54771SMintz, Yuval buf_idx++) { 115913c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 116013c54771SMintz, Yuval if (!p_buf) { 116113c54771SMintz, Yuval rc = -ENOMEM; 116213c54771SMintz, Yuval goto out; 116313c54771SMintz, Yuval } 116413c54771SMintz, Yuval 116513c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 116613c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 116713c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 116813c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 116913c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 117013c54771SMintz, Yuval p_buf->rx_buffer_size, 117113c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 117213c54771SMintz, Yuval GFP_KERNEL); 117313c54771SMintz, Yuval if (!p_virt) { 117413c54771SMintz, Yuval kfree(p_buf); 117513c54771SMintz, Yuval rc = -ENOMEM; 117613c54771SMintz, Yuval goto out; 117713c54771SMintz, Yuval } 117813c54771SMintz, Yuval 117913c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 118013c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 118113c54771SMintz, Yuval } 118213c54771SMintz, Yuval 118313c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 118413c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 118513c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 118613c54771SMintz, Yuval 118713c54771SMintz, Yuval out: 118813c54771SMintz, Yuval return rc; 118913c54771SMintz, Yuval } 119013c54771SMintz, Yuval 11910518c12fSMichal Kalderon static int 11920518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 11930518c12fSMichal Kalderon { 11940518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 11950518c12fSMichal Kalderon !cbs->rx_release_cb || 11960518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 11970518c12fSMichal Kalderon return -EINVAL; 11980518c12fSMichal Kalderon 11990518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 12000518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 12010518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 12020518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 12030518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 12040518c12fSMichal Kalderon 12050518c12fSMichal Kalderon return 0; 12060518c12fSMichal Kalderon } 12070518c12fSMichal Kalderon 120813c54771SMintz, Yuval static enum core_error_handle 120913c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 121013c54771SMintz, Yuval { 121113c54771SMintz, Yuval switch (err) { 121213c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 121313c54771SMintz, Yuval return LL2_DROP_PACKET; 121413c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 121513c54771SMintz, Yuval return LL2_DO_NOTHING; 121613c54771SMintz, Yuval case QED_LL2_ASSERT: 121713c54771SMintz, Yuval return LL2_ASSERT; 121813c54771SMintz, Yuval default: 121913c54771SMintz, Yuval return LL2_DO_NOTHING; 122013c54771SMintz, Yuval } 122113c54771SMintz, Yuval } 122213c54771SMintz, Yuval 12230518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 12240a7fb11cSYuval Mintz { 12250518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 12260a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 12270a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 122813c54771SMintz, Yuval u8 i, *p_tx_max; 12290a7fb11cSYuval Mintz int rc; 12300a7fb11cSYuval Mintz 123113c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 12320a7fb11cSYuval Mintz return -EINVAL; 12330a7fb11cSYuval Mintz 12340a7fb11cSYuval Mintz /* Find a free connection to be used */ 12350a7fb11cSYuval Mintz for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { 12360a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 12370a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 12380a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 12390a7fb11cSYuval Mintz continue; 12400a7fb11cSYuval Mintz } 12410a7fb11cSYuval Mintz 12420a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 12430a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 12440a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 12450a7fb11cSYuval Mintz break; 12460a7fb11cSYuval Mintz } 12470a7fb11cSYuval Mintz if (!p_ll2_info) 12480a7fb11cSYuval Mintz return -EBUSY; 12490a7fb11cSYuval Mintz 125013c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 12510a7fb11cSYuval Mintz 125213c54771SMintz, Yuval p_ll2_info->tx_dest = (data->input.tx_dest == QED_LL2_TX_DEST_NW) ? 125313c54771SMintz, Yuval CORE_TX_DEST_NW : CORE_TX_DEST_LB; 125413c54771SMintz, Yuval 125513c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 125613c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 125713c54771SMintz, Yuval if (*p_tx_max == 0) 125813c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 125913c54771SMintz, Yuval else 126013c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 126113c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 12620518c12fSMichal Kalderon 12630518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 12640518c12fSMichal Kalderon if (rc) { 12650518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 12660518c12fSMichal Kalderon goto q_allocate_fail; 12670518c12fSMichal Kalderon } 12680518c12fSMichal Kalderon 126913c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 12700a7fb11cSYuval Mintz if (rc) 12710a7fb11cSYuval Mintz goto q_allocate_fail; 12720a7fb11cSYuval Mintz 127313c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 12740a7fb11cSYuval Mintz if (rc) 12750a7fb11cSYuval Mintz goto q_allocate_fail; 12760a7fb11cSYuval Mintz 12771d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 127813c54771SMintz, Yuval data->input.mtu); 12791d6cff4fSYuval Mintz if (rc) 12801d6cff4fSYuval Mintz goto q_allocate_fail; 12811d6cff4fSYuval Mintz 12820a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 128313c54771SMintz, Yuval if (data->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) { 12841d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 12851d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 12861d6cff4fSYuval Mintz } else { 12870a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 12880a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 12891d6cff4fSYuval Mintz } 12900a7fb11cSYuval Mintz 129113c54771SMintz, Yuval if (data->input.rx_num_desc) { 12920a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 12930a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 12940a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 12950a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 12960a7fb11cSYuval Mintz p_ll2_info->rx_queue.b_cb_registred = true; 12970a7fb11cSYuval Mintz } 12980a7fb11cSYuval Mintz 129913c54771SMintz, Yuval if (data->input.tx_num_desc) { 13000a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 13010a7fb11cSYuval Mintz comp_tx_cb, 13020a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 13030a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 13040a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 13050a7fb11cSYuval Mintz p_ll2_info->tx_queue.b_cb_registred = true; 13060a7fb11cSYuval Mintz } 13070a7fb11cSYuval Mintz 130813c54771SMintz, Yuval *data->p_connection_handle = i; 13090a7fb11cSYuval Mintz return rc; 13100a7fb11cSYuval Mintz 13110a7fb11cSYuval Mintz q_allocate_fail: 13120a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 13130a7fb11cSYuval Mintz return -ENOMEM; 13140a7fb11cSYuval Mintz } 13150a7fb11cSYuval Mintz 13160a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 13170a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 13180a7fb11cSYuval Mintz { 131913c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 132013c54771SMintz, Yuval enum core_error_handle error_mode; 13210a7fb11cSYuval Mintz u8 action_on_error = 0; 13220a7fb11cSYuval Mintz 13230a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 13240a7fb11cSYuval Mintz return 0; 13250a7fb11cSYuval Mintz 13260a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 132713c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 132813c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 13290a7fb11cSYuval Mintz SET_FIELD(action_on_error, 133013c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 133113c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 133213c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 133313c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 13340a7fb11cSYuval Mintz 13350a7fb11cSYuval Mintz return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 13360a7fb11cSYuval Mintz } 13370a7fb11cSYuval Mintz 133858de2898SMintz, Yuval static void 133958de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 134058de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 134158de2898SMintz, Yuval { 134258de2898SMintz, Yuval if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO) 134358de2898SMintz, Yuval return; 134458de2898SMintz, Yuval 134558de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 134658de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 134758de2898SMintz, Yuval } 13480518c12fSMichal Kalderon 13490518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 13500a7fb11cSYuval Mintz { 13510518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13520a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 13530a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 13540a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 135515582962SRahul Verma struct qed_ptt *p_ptt; 13560a7fb11cSYuval Mintz int rc = -EINVAL; 13570a7fb11cSYuval Mintz u32 i, capacity; 13580a7fb11cSYuval Mintz u8 qid; 13590a7fb11cSYuval Mintz 136015582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 136115582962SRahul Verma if (!p_ptt) 136215582962SRahul Verma return -EAGAIN; 136315582962SRahul Verma 13640a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 136515582962SRahul Verma if (!p_ll2_conn) { 136615582962SRahul Verma rc = -EINVAL; 136715582962SRahul Verma goto out; 136815582962SRahul Verma } 136915582962SRahul Verma 13700a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 13710a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 13720a7fb11cSYuval Mintz 13730a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 13740a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 13750a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 13760a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 13770a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 13780a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 13790a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 13800a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 13810a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 13820a7fb11cSYuval Mintz &p_rx->free_descq); 13830a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 13840a7fb11cSYuval Mintz 13850a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 13860a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 13870a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 13880a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 13890a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 13900a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 13910a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 13920a7fb11cSYuval Mintz list_add_tail(&p_tx->descq_array[i].list_entry, 13930a7fb11cSYuval Mintz &p_tx->free_descq); 13940a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 13950a7fb11cSYuval Mintz p_tx->bds_idx = 0; 13960a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 13970a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 13980a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 13990a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 14000a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 14010a7fb11cSYuval Mintz 140215582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 140315582962SRahul Verma if (rc) 140415582962SRahul Verma goto out; 14050a7fb11cSYuval Mintz 14060a7fb11cSYuval Mintz qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; 14070a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 14080a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 14090a7fb11cSYuval Mintz p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + 14100a7fb11cSYuval Mintz GTT_BAR0_MAP_REG_TSDM_RAM + 14110a7fb11cSYuval Mintz TSTORM_LL2_RX_PRODS_OFFSET(qid); 14120a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 14130a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 14140a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 14150a7fb11cSYuval Mintz 14160a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 14170a7fb11cSYuval Mintz if (rc) 141815582962SRahul Verma goto out; 14190a7fb11cSYuval Mintz 14200a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 14210a7fb11cSYuval Mintz if (rc) 142215582962SRahul Verma goto out; 14230a7fb11cSYuval Mintz 1424c851a9dcSKalderon, Michal if (!QED_IS_RDMA_PERSONALITY(p_hwfn)) 142515582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 14260a7fb11cSYuval Mintz 14271d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 14281d6cff4fSYuval Mintz 142913c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 143015582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 14311e128c81SArun Easi 0x8906, 0, 14321e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 143315582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 14341e128c81SArun Easi 0x8914, 0, 14351e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 14361e128c81SArun Easi } 14371e128c81SArun Easi 143815582962SRahul Verma out: 143915582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 14400a7fb11cSYuval Mintz return rc; 14410a7fb11cSYuval Mintz } 14420a7fb11cSYuval Mintz 14430a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 14440a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 14450a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 14460a7fb11cSYuval Mintz { 14470a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 14480a7fb11cSYuval Mintz struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; 14490a7fb11cSYuval Mintz bool b_notify_fw = false; 14500a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 14510a7fb11cSYuval Mintz 14520a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 14530a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 14540a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 14550a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 14560a7fb11cSYuval Mintz list_entry); 1457b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 14580a7fb11cSYuval Mintz &p_rx->active_descq); 14590a7fb11cSYuval Mintz b_notify_fw = true; 14600a7fb11cSYuval Mintz } 14610a7fb11cSYuval Mintz 14620a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 14630a7fb11cSYuval Mintz if (p_curp) { 14640a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 14650a7fb11cSYuval Mintz b_notify_fw = true; 14660a7fb11cSYuval Mintz } 14670a7fb11cSYuval Mintz 14680a7fb11cSYuval Mintz if (!b_notify_fw) 14690a7fb11cSYuval Mintz return; 14700a7fb11cSYuval Mintz 14710a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 14720a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 14730a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 14740a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 14750a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 14760a7fb11cSYuval Mintz } 14770a7fb11cSYuval Mintz 14780518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 14790a7fb11cSYuval Mintz u8 connection_handle, 14800a7fb11cSYuval Mintz dma_addr_t addr, 14810a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 14820a7fb11cSYuval Mintz { 14830518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 14840a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 14850a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 14860a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 14870a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 14880a7fb11cSYuval Mintz unsigned long flags; 14890a7fb11cSYuval Mintz void *p_data; 14900a7fb11cSYuval Mintz int rc = 0; 14910a7fb11cSYuval Mintz 14920a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 14930a7fb11cSYuval Mintz if (!p_ll2_conn) 14940a7fb11cSYuval Mintz return -EINVAL; 14950a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 14960a7fb11cSYuval Mintz 14970a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 14980a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 14990a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 15000a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 15010a7fb11cSYuval Mintz if (p_curp) { 15020a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 15030a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 15040a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 15050a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 15060a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 15070a7fb11cSYuval Mintz } 15080a7fb11cSYuval Mintz } 15090a7fb11cSYuval Mintz 15100a7fb11cSYuval Mintz /* If we're lacking entires, let's try to flush buffers to FW */ 15110a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 15120a7fb11cSYuval Mintz rc = -EBUSY; 15130a7fb11cSYuval Mintz p_curp = NULL; 15140a7fb11cSYuval Mintz goto out_notify; 15150a7fb11cSYuval Mintz } 15160a7fb11cSYuval Mintz 15170a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 15180a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 15190a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 15200a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 15210a7fb11cSYuval Mintz p_curp->cookie = cookie; 15220a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 15230a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 15240a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 15250a7fb11cSYuval Mintz 15260a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 15270a7fb11cSYuval Mintz if (!notify_fw) { 15280a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 15290a7fb11cSYuval Mintz goto out; 15300a7fb11cSYuval Mintz } 15310a7fb11cSYuval Mintz 15320a7fb11cSYuval Mintz out_notify: 15330a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 15340a7fb11cSYuval Mintz out: 15350a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 15360a7fb11cSYuval Mintz return rc; 15370a7fb11cSYuval Mintz } 15380a7fb11cSYuval Mintz 15390a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 15400a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 15410a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 15427c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 15430a7fb11cSYuval Mintz u8 notify_fw) 15440a7fb11cSYuval Mintz { 15450a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 15467c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 15477c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 15480a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 15490a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 15500a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15510a7fb11cSYuval Mintz 15527c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 15537c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 15540a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 15550a7fb11cSYuval Mintz } 15560a7fb11cSYuval Mintz 1557be086e7cSMintz, Yuval static void 1558be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 15590a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 15600a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 15617c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 15620a7fb11cSYuval Mintz { 15630a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 15640a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 15650a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 15667c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 15677c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1568be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 15690a7fb11cSYuval Mintz 15707c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 15717c7973b2SMintz, Yuval : CORE_RROCE; 15727c7973b2SMintz, Yuval 15737c7973b2SMintz, Yuval tx_dest = (pkt->tx_dest == QED_LL2_TX_DEST_NW) ? CORE_TX_DEST_NW 15747c7973b2SMintz, Yuval : CORE_TX_DEST_LB; 15757c7973b2SMintz, Yuval 15760a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 15777c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 15780a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, 15797c7973b2SMintz, Yuval cpu_to_le16(pkt->l4_hdr_offset_w)); 15800a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); 15817c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1582be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 15837c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1584be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 1585be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 15867c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 15877c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 15880a7fb11cSYuval Mintz 15890a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 15900a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 15910a7fb11cSYuval 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", 15920a7fb11cSYuval Mintz p_ll2->queue_id, 15930a7fb11cSYuval Mintz p_ll2->cid, 159413c54771SMintz, Yuval p_ll2->input.conn_type, 15950a7fb11cSYuval Mintz prod_idx, 15967c7973b2SMintz, Yuval pkt->first_frag_len, 15977c7973b2SMintz, Yuval pkt->num_of_bds, 15980a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 15990a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 16000a7fb11cSYuval Mintz 16017c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 16020a7fb11cSYuval Mintz return; 16030a7fb11cSYuval Mintz 16040a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 16050a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 16067c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 16070a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 16080a7fb11cSYuval Mintz 16090a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1610be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 16110a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 16120a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 16130a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 16140a7fb11cSYuval Mintz } 16150a7fb11cSYuval Mintz } 16160a7fb11cSYuval Mintz 16170a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 16180a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 16190a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 16200a7fb11cSYuval Mintz { 16210a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 16220a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 16230a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 16240a7fb11cSYuval Mintz struct core_db_data db_msg = { 0, 0, 0 }; 16250a7fb11cSYuval Mintz u16 bd_prod; 16260a7fb11cSYuval Mintz 16270a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 16280a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 16290a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 16300a7fb11cSYuval Mintz return; 16310a7fb11cSYuval Mintz 16320a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 16330a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 16340a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 16350a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 16360a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 16370a7fb11cSYuval Mintz 16380a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 16390a7fb11cSYuval Mintz if (!b_notify) 16400a7fb11cSYuval Mintz return; 16410a7fb11cSYuval Mintz 16420a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 16430a7fb11cSYuval Mintz 16440a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 16450a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 16460a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 16470a7fb11cSYuval Mintz if (!p_pkt) 16480a7fb11cSYuval Mintz break; 16490a7fb11cSYuval Mintz 1650b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 16510a7fb11cSYuval Mintz } 16520a7fb11cSYuval Mintz 16530a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 16540a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 16550a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 16560a7fb11cSYuval Mintz DQ_XCM_CORE_TX_BD_PROD_CMD); 16570a7fb11cSYuval Mintz db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 16580a7fb11cSYuval Mintz db_msg.spq_prod = cpu_to_le16(bd_prod); 16590a7fb11cSYuval Mintz 16600a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 16610a7fb11cSYuval Mintz wmb(); 16620a7fb11cSYuval Mintz 16630a7fb11cSYuval Mintz DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); 16640a7fb11cSYuval Mintz 16650a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 16660a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 16670a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 16680a7fb11cSYuval Mintz p_ll2_conn->queue_id, 166913c54771SMintz, Yuval p_ll2_conn->cid, 167013c54771SMintz, Yuval p_ll2_conn->input.conn_type, db_msg.spq_prod); 16710a7fb11cSYuval Mintz } 16720a7fb11cSYuval Mintz 16730518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 16740a7fb11cSYuval Mintz u8 connection_handle, 16757c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 16767c7973b2SMintz, Yuval bool notify_fw) 16770a7fb11cSYuval Mintz { 16780518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 16790a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 16800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 16810a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 16820a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 16830a7fb11cSYuval Mintz unsigned long flags; 16840a7fb11cSYuval Mintz int rc = 0; 16850a7fb11cSYuval Mintz 16860a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 16870a7fb11cSYuval Mintz if (!p_ll2_conn) 16880a7fb11cSYuval Mintz return -EINVAL; 16890a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 16900a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 16910a7fb11cSYuval Mintz 16927c7973b2SMintz, Yuval if (pkt->num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET) 16930a7fb11cSYuval Mintz return -EIO; 16940a7fb11cSYuval Mintz 16950a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 16960a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 16970a7fb11cSYuval Mintz rc = -EEXIST; 16980a7fb11cSYuval Mintz goto out; 16990a7fb11cSYuval Mintz } 17000a7fb11cSYuval Mintz 17010a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 17020a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 17030a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 17040a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 17057c7973b2SMintz, Yuval if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds) 17060a7fb11cSYuval Mintz p_curp = NULL; 17070a7fb11cSYuval Mintz 17080a7fb11cSYuval Mintz if (!p_curp) { 17090a7fb11cSYuval Mintz rc = -EBUSY; 17100a7fb11cSYuval Mintz goto out; 17110a7fb11cSYuval Mintz } 17120a7fb11cSYuval Mintz 17130a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 17147c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 17157c7973b2SMintz, Yuval 17167c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 17170a7fb11cSYuval Mintz 17180a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 17190a7fb11cSYuval Mintz 17200a7fb11cSYuval Mintz out: 17210a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 17220a7fb11cSYuval Mintz return rc; 17230a7fb11cSYuval Mintz } 17240a7fb11cSYuval Mintz 17250518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 17260a7fb11cSYuval Mintz u8 connection_handle, 17270a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 17280a7fb11cSYuval Mintz { 17290a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 17300518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 17310a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 17320a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 17330a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 17340a7fb11cSYuval Mintz unsigned long flags; 17350a7fb11cSYuval Mintz 17360a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17370a7fb11cSYuval Mintz if (!p_ll2_conn) 17380a7fb11cSYuval Mintz return -EINVAL; 17390a7fb11cSYuval Mintz 17400a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 17410a7fb11cSYuval Mintz return -EINVAL; 17420a7fb11cSYuval Mintz 17430a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 17440a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 17450a7fb11cSYuval Mintz 17460a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 17470a7fb11cSYuval Mintz return -EINVAL; 17480a7fb11cSYuval Mintz 17490a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 17500a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 17510a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 17520a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 17530a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 17540a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 17550a7fb11cSYuval Mintz 17560a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 17570a7fb11cSYuval Mintz 17580a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 17590a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 17600a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 17610a7fb11cSYuval Mintz 17620a7fb11cSYuval Mintz return 0; 17630a7fb11cSYuval Mintz } 17640a7fb11cSYuval Mintz 17650518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 17660a7fb11cSYuval Mintz { 17670518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 17680a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 17690a7fb11cSYuval Mintz int rc = -EINVAL; 177015582962SRahul Verma struct qed_ptt *p_ptt; 177115582962SRahul Verma 177215582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 177315582962SRahul Verma if (!p_ptt) 177415582962SRahul Verma return -EAGAIN; 17750a7fb11cSYuval Mintz 17760a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 177715582962SRahul Verma if (!p_ll2_conn) { 177815582962SRahul Verma rc = -EINVAL; 177915582962SRahul Verma goto out; 178015582962SRahul Verma } 17810a7fb11cSYuval Mintz 17820a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 17830a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 17840a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 17850a7fb11cSYuval Mintz if (rc) 178615582962SRahul Verma goto out; 17870a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 17880a7fb11cSYuval Mintz } 17890a7fb11cSYuval Mintz 17900a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 17910a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 17920a7fb11cSYuval Mintz if (rc) 179315582962SRahul Verma goto out; 17940a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 17950a7fb11cSYuval Mintz } 17960a7fb11cSYuval Mintz 179713c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_ISCSI_OOO) 17981d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 17991d6cff4fSYuval Mintz 180013c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 180115582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 18021e128c81SArun Easi 0x8906, 0, 18031e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 180415582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 18051e128c81SArun Easi 0x8914, 0, 18061e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 18071e128c81SArun Easi } 18081e128c81SArun Easi 180915582962SRahul Verma out: 181015582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 18110a7fb11cSYuval Mintz return rc; 18120a7fb11cSYuval Mintz } 18130a7fb11cSYuval Mintz 181458de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 181558de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 181658de2898SMintz, Yuval { 181758de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 181858de2898SMintz, Yuval 181958de2898SMintz, Yuval if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_ISCSI_OOO) 182058de2898SMintz, Yuval return; 182158de2898SMintz, Yuval 182258de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 182358de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 182458de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 182558de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 182658de2898SMintz, Yuval p_buffer->rx_buffer_size, 182758de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 182858de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 182958de2898SMintz, Yuval kfree(p_buffer); 183058de2898SMintz, Yuval } 183158de2898SMintz, Yuval } 18320518c12fSMichal Kalderon 18330518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 18340a7fb11cSYuval Mintz { 18350518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 18360a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18370a7fb11cSYuval Mintz 18380a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18390a7fb11cSYuval Mintz if (!p_ll2_conn) 18400a7fb11cSYuval Mintz return; 18410a7fb11cSYuval Mintz 18420a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 18430a7fb11cSYuval Mintz p_ll2_conn->rx_queue.b_cb_registred = false; 18440a7fb11cSYuval Mintz qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 18450a7fb11cSYuval Mintz } 18460a7fb11cSYuval Mintz 18470a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 18480a7fb11cSYuval Mintz p_ll2_conn->tx_queue.b_cb_registred = false; 18490a7fb11cSYuval Mintz qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 18500a7fb11cSYuval Mintz } 18510a7fb11cSYuval Mintz 18520a7fb11cSYuval Mintz kfree(p_ll2_conn->tx_queue.descq_array); 18530a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 18540a7fb11cSYuval Mintz 18550a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 18560a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 18570a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 18580a7fb11cSYuval Mintz 18590a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 18600a7fb11cSYuval Mintz 18611d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 18621d6cff4fSYuval Mintz 18630a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 18640a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 18650a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 18660a7fb11cSYuval Mintz } 18670a7fb11cSYuval Mintz 18683587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 18690a7fb11cSYuval Mintz { 18700a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 18710a7fb11cSYuval Mintz u8 i; 18720a7fb11cSYuval Mintz 18730a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 18740a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 18750a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 18760a7fb11cSYuval Mintz if (!p_ll2_connections) { 18770a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 18783587cb87STomer Tayar return -ENOMEM; 18790a7fb11cSYuval Mintz } 18800a7fb11cSYuval Mintz 18810a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 18820a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 18830a7fb11cSYuval Mintz 18843587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 18853587cb87STomer Tayar return 0; 18860a7fb11cSYuval Mintz } 18870a7fb11cSYuval Mintz 18883587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 18890a7fb11cSYuval Mintz { 18900a7fb11cSYuval Mintz int i; 18910a7fb11cSYuval Mintz 18920a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 18933587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 18940a7fb11cSYuval Mintz } 18950a7fb11cSYuval Mintz 18963587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 18970a7fb11cSYuval Mintz { 18983587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 18993587cb87STomer Tayar return; 19003587cb87STomer Tayar 19013587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 19023587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 19030a7fb11cSYuval Mintz } 19040a7fb11cSYuval Mintz 1905fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 1906fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 1907fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 1908fef1c3f7SMintz, Yuval { 1909fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 1910fef1c3f7SMintz, Yuval 1911fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 1912fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 1913fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 1914fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 1915fef1c3f7SMintz, Yuval sizeof(port_stats)); 1916fef1c3f7SMintz, Yuval 1917fef1c3f7SMintz, Yuval p_stats->gsi_invalid_hdr = HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 1918fef1c3f7SMintz, Yuval p_stats->gsi_invalid_pkt_length = 1919fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 1920fef1c3f7SMintz, Yuval p_stats->gsi_unsupported_pkt_typ = 1921fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 1922fef1c3f7SMintz, Yuval p_stats->gsi_crcchksm_error = 1923fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 1924fef1c3f7SMintz, Yuval } 1925fef1c3f7SMintz, Yuval 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 19890518c12fSMichal Kalderon int qed_ll2_get_stats(void *cxt, 19900a7fb11cSYuval Mintz u8 connection_handle, struct qed_ll2_stats *p_stats) 19910a7fb11cSYuval Mintz { 19920518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19930a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19940a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 19950a7fb11cSYuval Mintz 19960a7fb11cSYuval Mintz memset(p_stats, 0, sizeof(*p_stats)); 19970a7fb11cSYuval Mintz 19980a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 19990a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 20000a7fb11cSYuval Mintz return -EINVAL; 20010a7fb11cSYuval Mintz 20020a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 20030a7fb11cSYuval Mintz 20040a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 20050a7fb11cSYuval Mintz if (!p_ptt) { 20060a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 20070a7fb11cSYuval Mintz return -EINVAL; 20080a7fb11cSYuval Mintz } 20090a7fb11cSYuval Mintz 2010fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2011fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 20120a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20130a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20140a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 20150a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 20160a7fb11cSYuval Mintz 20170a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 20180a7fb11cSYuval Mintz return 0; 20190a7fb11cSYuval Mintz } 20200a7fb11cSYuval Mintz 20210518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 20220518c12fSMichal Kalderon u8 connection_handle, 20230518c12fSMichal Kalderon void *cookie, 20240518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 20250518c12fSMichal Kalderon bool b_last_packet) 20260518c12fSMichal Kalderon { 20270518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20280518c12fSMichal Kalderon 20290518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 20300518c12fSMichal Kalderon } 20310518c12fSMichal Kalderon 20320a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 20330a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 20340a7fb11cSYuval Mintz void *cookie) 20350a7fb11cSYuval Mintz { 20360a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 20370a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 20380a7fb11cSYuval Mintz } 20390a7fb11cSYuval Mintz 20400518c12fSMichal Kalderon struct qed_ll2_cbs ll2_cbs = { 20410518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 20420518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 20430518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 20440518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 20450518c12fSMichal Kalderon }; 20460518c12fSMichal Kalderon 204713c54771SMintz, Yuval static void qed_ll2_set_conn_data(struct qed_dev *cdev, 204813c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 204913c54771SMintz, Yuval struct qed_ll2_params *params, 205013c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 20510518c12fSMichal Kalderon u8 *handle, bool lb) 205213c54771SMintz, Yuval { 205313c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 205413c54771SMintz, Yuval 205513c54771SMintz, Yuval data->input.conn_type = conn_type; 205613c54771SMintz, Yuval data->input.mtu = params->mtu; 205713c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 205813c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 205913c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 206013c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 206113c54771SMintz, Yuval data->p_connection_handle = handle; 20620518c12fSMichal Kalderon data->cbs = &ll2_cbs; 20630518c12fSMichal Kalderon ll2_cbs.cookie = QED_LEADING_HWFN(cdev); 20640518c12fSMichal Kalderon 206513c54771SMintz, Yuval if (lb) { 206613c54771SMintz, Yuval data->input.tx_tc = OOO_LB_TC; 206713c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 206813c54771SMintz, Yuval } else { 206913c54771SMintz, Yuval data->input.tx_tc = 0; 207013c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 207113c54771SMintz, Yuval } 207213c54771SMintz, Yuval } 207313c54771SMintz, Yuval 207413c54771SMintz, Yuval static int qed_ll2_start_ooo(struct qed_dev *cdev, 207513c54771SMintz, Yuval struct qed_ll2_params *params) 207613c54771SMintz, Yuval { 207713c54771SMintz, Yuval struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 207813c54771SMintz, Yuval u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 207913c54771SMintz, Yuval struct qed_ll2_acquire_data data; 208013c54771SMintz, Yuval int rc; 208113c54771SMintz, Yuval 208213c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, 20830518c12fSMichal Kalderon QED_LL2_TYPE_ISCSI_OOO, handle, true); 208413c54771SMintz, Yuval 208513c54771SMintz, Yuval rc = qed_ll2_acquire_connection(hwfn, &data); 208613c54771SMintz, Yuval if (rc) { 208713c54771SMintz, Yuval DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n"); 208813c54771SMintz, Yuval goto out; 208913c54771SMintz, Yuval } 209013c54771SMintz, Yuval 209113c54771SMintz, Yuval rc = qed_ll2_establish_connection(hwfn, *handle); 209213c54771SMintz, Yuval if (rc) { 209313c54771SMintz, Yuval DP_INFO(cdev, "Failed to establist LL2 OOO connection\n"); 209413c54771SMintz, Yuval goto fail; 209513c54771SMintz, Yuval } 209613c54771SMintz, Yuval 209713c54771SMintz, Yuval return 0; 209813c54771SMintz, Yuval 209913c54771SMintz, Yuval fail: 210013c54771SMintz, Yuval qed_ll2_release_connection(hwfn, *handle); 210113c54771SMintz, Yuval out: 210213c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 210313c54771SMintz, Yuval return rc; 210413c54771SMintz, Yuval } 210513c54771SMintz, Yuval 21060a7fb11cSYuval Mintz static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 21070a7fb11cSYuval Mintz { 210888a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 21090a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 211013c54771SMintz, Yuval struct qed_ll2_acquire_data data; 21110a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 21120a7fb11cSYuval Mintz int rc, i; 21130518c12fSMichal Kalderon 21140a7fb11cSYuval Mintz 21150a7fb11cSYuval Mintz /* Initialize LL2 locks & lists */ 21160a7fb11cSYuval Mintz INIT_LIST_HEAD(&cdev->ll2->list); 21170a7fb11cSYuval Mintz spin_lock_init(&cdev->ll2->lock); 21180a7fb11cSYuval Mintz cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 21190a7fb11cSYuval Mintz L1_CACHE_BYTES + params->mtu; 21200a7fb11cSYuval Mintz 21210a7fb11cSYuval Mintz /*Allocate memory for LL2 */ 21220a7fb11cSYuval Mintz DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", 21230a7fb11cSYuval Mintz cdev->ll2->rx_size); 21240a7fb11cSYuval Mintz for (i = 0; i < QED_LL2_RX_SIZE; i++) { 21250a7fb11cSYuval Mintz buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 21260a7fb11cSYuval Mintz if (!buffer) { 21270a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 21280a7fb11cSYuval Mintz goto fail; 21290a7fb11cSYuval Mintz } 21300a7fb11cSYuval Mintz 21310a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 21320a7fb11cSYuval Mintz &buffer->phys_addr); 21330a7fb11cSYuval Mintz if (rc) { 21340a7fb11cSYuval Mintz kfree(buffer); 21350a7fb11cSYuval Mintz goto fail; 21360a7fb11cSYuval Mintz } 21370a7fb11cSYuval Mintz 21380a7fb11cSYuval Mintz list_add_tail(&buffer->list, &cdev->ll2->list); 21390a7fb11cSYuval Mintz } 21400a7fb11cSYuval Mintz 21410a7fb11cSYuval Mintz switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { 21421e128c81SArun Easi case QED_PCI_FCOE: 21431e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 21441e128c81SArun Easi break; 21450a7fb11cSYuval Mintz case QED_PCI_ISCSI: 21460a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ISCSI; 21470a7fb11cSYuval Mintz break; 21480a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 21490a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 21500a7fb11cSYuval Mintz break; 21510a7fb11cSYuval Mintz default: 21520a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 21530a7fb11cSYuval Mintz } 21540a7fb11cSYuval Mintz 215513c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, conn_type, 21560518c12fSMichal Kalderon &cdev->ll2->handle, false); 21570629a330SArnd Bergmann 215813c54771SMintz, Yuval rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data); 21590a7fb11cSYuval Mintz if (rc) { 21600a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire LL2 connection\n"); 21610a7fb11cSYuval Mintz goto fail; 21620a7fb11cSYuval Mintz } 21630a7fb11cSYuval Mintz 21640a7fb11cSYuval Mintz rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), 21650a7fb11cSYuval Mintz cdev->ll2->handle); 21660a7fb11cSYuval Mintz if (rc) { 21670a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to establish LL2 connection\n"); 21680a7fb11cSYuval Mintz goto release_fail; 21690a7fb11cSYuval Mintz } 21700a7fb11cSYuval Mintz 21710a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 21720a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 217388a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 21740a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), 21750a7fb11cSYuval Mintz cdev->ll2->handle, 21760a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 21770a7fb11cSYuval Mintz if (rc) { 21780a7fb11cSYuval Mintz DP_INFO(cdev, 21790a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 21800a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 21810a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 21820a7fb11cSYuval Mintz kfree(buffer->data); 21830a7fb11cSYuval Mintz list_del(&buffer->list); 21840a7fb11cSYuval Mintz kfree(buffer); 21850a7fb11cSYuval Mintz } else { 21860a7fb11cSYuval Mintz cdev->ll2->rx_cnt++; 21870a7fb11cSYuval Mintz } 21880a7fb11cSYuval Mintz } 21890a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 21900a7fb11cSYuval Mintz 21910a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) { 21920a7fb11cSYuval Mintz DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); 21930a7fb11cSYuval Mintz goto release_terminate; 21940a7fb11cSYuval Mintz } 21950a7fb11cSYuval Mintz 21960a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 21970a7fb11cSYuval Mintz DP_INFO(cdev, "Invalid Ethernet address\n"); 21980a7fb11cSYuval Mintz goto release_terminate; 21990a7fb11cSYuval Mintz } 22000a7fb11cSYuval Mintz 22011d6cff4fSYuval Mintz if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && 22021d6cff4fSYuval Mintz cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) { 22031d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 22041d6cff4fSYuval Mintz rc = qed_ll2_start_ooo(cdev, params); 22051d6cff4fSYuval Mintz if (rc) { 22061d6cff4fSYuval Mintz DP_INFO(cdev, 22071d6cff4fSYuval Mintz "Failed to initialize the OOO LL2 queue\n"); 22081d6cff4fSYuval Mintz goto release_terminate; 22091d6cff4fSYuval Mintz } 22101d6cff4fSYuval Mintz } 22111d6cff4fSYuval Mintz 22120a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 22130a7fb11cSYuval Mintz if (!p_ptt) { 22140a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 22150a7fb11cSYuval Mintz goto release_terminate; 22160a7fb11cSYuval Mintz } 22170a7fb11cSYuval Mintz 22180a7fb11cSYuval Mintz rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 22190a7fb11cSYuval Mintz params->ll2_mac_address); 22200a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 22210a7fb11cSYuval Mintz if (rc) { 22220a7fb11cSYuval Mintz DP_ERR(cdev, "Failed to allocate LLH filter\n"); 22230a7fb11cSYuval Mintz goto release_terminate_all; 22240a7fb11cSYuval Mintz } 22250a7fb11cSYuval Mintz 22260a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 22270a7fb11cSYuval Mintz return 0; 22280a7fb11cSYuval Mintz 22290a7fb11cSYuval Mintz release_terminate_all: 22300a7fb11cSYuval Mintz 22310a7fb11cSYuval Mintz release_terminate: 22320a7fb11cSYuval Mintz qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 22330a7fb11cSYuval Mintz release_fail: 22340a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 22350a7fb11cSYuval Mintz fail: 22360a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 22370a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 22380a7fb11cSYuval Mintz return -EINVAL; 22390a7fb11cSYuval Mintz } 22400a7fb11cSYuval Mintz 22410a7fb11cSYuval Mintz static int qed_ll2_stop(struct qed_dev *cdev) 22420a7fb11cSYuval Mintz { 22430a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 22440a7fb11cSYuval Mintz int rc; 22450a7fb11cSYuval Mintz 22460a7fb11cSYuval Mintz if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 22470a7fb11cSYuval Mintz return 0; 22480a7fb11cSYuval Mintz 22490a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 22500a7fb11cSYuval Mintz if (!p_ptt) { 22510a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 22520a7fb11cSYuval Mintz goto fail; 22530a7fb11cSYuval Mintz } 22540a7fb11cSYuval Mintz 22550a7fb11cSYuval Mintz qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 22560a7fb11cSYuval Mintz cdev->ll2_mac_address); 22570a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 22580a7fb11cSYuval Mintz eth_zero_addr(cdev->ll2_mac_address); 22590a7fb11cSYuval Mintz 22601d6cff4fSYuval Mintz if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && 22611d6cff4fSYuval Mintz cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) 22621d6cff4fSYuval Mintz qed_ll2_stop_ooo(cdev); 22631d6cff4fSYuval Mintz 22640a7fb11cSYuval Mintz rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), 22650a7fb11cSYuval Mintz cdev->ll2->handle); 22660a7fb11cSYuval Mintz if (rc) 22670a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 22680a7fb11cSYuval Mintz 22690a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 22700a7fb11cSYuval Mintz 22710a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 22720a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 22730a7fb11cSYuval Mintz 22740a7fb11cSYuval Mintz return rc; 22750a7fb11cSYuval Mintz fail: 22760a7fb11cSYuval Mintz return -EINVAL; 22770a7fb11cSYuval Mintz } 22780a7fb11cSYuval Mintz 22790a7fb11cSYuval Mintz static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb) 22800a7fb11cSYuval Mintz { 22817c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 22820a7fb11cSYuval Mintz const skb_frag_t *frag; 22830a7fb11cSYuval Mintz int rc = -EINVAL, i; 22840a7fb11cSYuval Mintz dma_addr_t mapping; 22850a7fb11cSYuval Mintz u16 vlan = 0; 22860a7fb11cSYuval Mintz u8 flags = 0; 22870a7fb11cSYuval Mintz 22880a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 22890a7fb11cSYuval Mintz DP_INFO(cdev, "Cannot transmit a checksumed packet\n"); 22900a7fb11cSYuval Mintz return -EINVAL; 22910a7fb11cSYuval Mintz } 22920a7fb11cSYuval Mintz 22930a7fb11cSYuval Mintz if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 22940a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 22950a7fb11cSYuval Mintz 1 + skb_shinfo(skb)->nr_frags); 22960a7fb11cSYuval Mintz return -EINVAL; 22970a7fb11cSYuval Mintz } 22980a7fb11cSYuval Mintz 22990a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 23000a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 23010a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 23020a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 23030a7fb11cSYuval Mintz return -EINVAL; 23040a7fb11cSYuval Mintz } 23050a7fb11cSYuval Mintz 23060a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 23070a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 23080a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2309be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 23100a7fb11cSYuval Mintz 23110a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 23120a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2313be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 23140a7fb11cSYuval Mintz } 23150a7fb11cSYuval Mintz 23167c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 23177c7973b2SMintz, Yuval pkt.num_of_bds = 1 + skb_shinfo(skb)->nr_frags; 23187c7973b2SMintz, Yuval pkt.vlan = vlan; 23197c7973b2SMintz, Yuval pkt.bd_flags = flags; 23207c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 23217c7973b2SMintz, Yuval pkt.first_frag = mapping; 23227c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 23237c7973b2SMintz, Yuval pkt.cookie = skb; 23247c7973b2SMintz, Yuval 23257c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(&cdev->hwfns[0], cdev->ll2->handle, 23267c7973b2SMintz, Yuval &pkt, 1); 23270a7fb11cSYuval Mintz if (rc) 23280a7fb11cSYuval Mintz goto err; 23290a7fb11cSYuval Mintz 23300a7fb11cSYuval Mintz for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 23310a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 23320a7fb11cSYuval Mintz 2333d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2334d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2335d2201a21SMintz, Yuval 2336d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 23370a7fb11cSYuval Mintz DP_NOTICE(cdev, 23380a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 23390a7fb11cSYuval Mintz goto err; 23400a7fb11cSYuval Mintz } 23410a7fb11cSYuval Mintz 23420a7fb11cSYuval Mintz rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), 23430a7fb11cSYuval Mintz cdev->ll2->handle, 23440a7fb11cSYuval Mintz mapping, 23450a7fb11cSYuval Mintz skb_frag_size(frag)); 23460a7fb11cSYuval Mintz 23470a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 23480a7fb11cSYuval Mintz * we can't free memory, will need to wait for completion. 23490a7fb11cSYuval Mintz */ 23500a7fb11cSYuval Mintz if (rc) 23510a7fb11cSYuval Mintz goto err2; 23520a7fb11cSYuval Mintz } 23530a7fb11cSYuval Mintz 23540a7fb11cSYuval Mintz return 0; 23550a7fb11cSYuval Mintz 23560a7fb11cSYuval Mintz err: 23570a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 23580a7fb11cSYuval Mintz 23590a7fb11cSYuval Mintz err2: 23600a7fb11cSYuval Mintz return rc; 23610a7fb11cSYuval Mintz } 23620a7fb11cSYuval Mintz 23630a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 23640a7fb11cSYuval Mintz { 23650a7fb11cSYuval Mintz if (!cdev->ll2) 23660a7fb11cSYuval Mintz return -EINVAL; 23670a7fb11cSYuval Mintz 23680a7fb11cSYuval Mintz return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 23690a7fb11cSYuval Mintz cdev->ll2->handle, stats); 23700a7fb11cSYuval Mintz } 23710a7fb11cSYuval Mintz 23720a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 23730a7fb11cSYuval Mintz .start = &qed_ll2_start, 23740a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 23750a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 23760a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 23770a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 23780a7fb11cSYuval Mintz }; 23790a7fb11cSYuval Mintz 23800a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 23810a7fb11cSYuval Mintz { 23820a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 23830a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 23840a7fb11cSYuval Mintz } 23850a7fb11cSYuval Mintz 23860a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 23870a7fb11cSYuval Mintz { 23880a7fb11cSYuval Mintz kfree(cdev->ll2); 23890a7fb11cSYuval Mintz cdev->ll2 = NULL; 23900a7fb11cSYuval Mintz } 2391