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; 2956291c608SMichal Kalderon unsigned long flags = 0; 296abd49676SRam Amrani dma_addr_t tx_frag; 2970a7fb11cSYuval Mintz 2980a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 2990a7fb11cSYuval Mintz if (!p_ll2_conn) 3000a7fb11cSYuval Mintz return; 3010a7fb11cSYuval Mintz 3020a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 3030a7fb11cSYuval Mintz 3046291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3050a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 3060a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3070a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3080a7fb11cSYuval Mintz if (!p_pkt) 3090a7fb11cSYuval Mintz break; 3100a7fb11cSYuval Mintz 3110a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3120a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 3130a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3146291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 315526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 3161d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 3171d6cff4fSYuval Mintz 3181d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3191d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3201d6cff4fSYuval Mintz p_buffer); 3211d6cff4fSYuval Mintz } else { 3220a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3230a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3241d6cff4fSYuval Mintz b_last_frag = 3251d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 326abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3270518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 328abd49676SRam Amrani p_ll2_conn->my_id, 329abd49676SRam Amrani p_pkt->cookie, 330abd49676SRam Amrani tx_frag, 331abd49676SRam Amrani b_last_frag, 332abd49676SRam Amrani b_last_packet); 3331d6cff4fSYuval Mintz } 3346291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3350a7fb11cSYuval Mintz } 3366291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 3370a7fb11cSYuval Mintz } 3380a7fb11cSYuval Mintz 3390a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3400a7fb11cSYuval Mintz { 3410a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3420a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3430a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3440a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3450a7fb11cSYuval Mintz bool b_last_frag = false; 3460a7fb11cSYuval Mintz unsigned long flags; 3470a7fb11cSYuval Mintz int rc = -EINVAL; 3480a7fb11cSYuval Mintz 3490a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3500a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3510a7fb11cSYuval Mintz rc = -EBUSY; 3520a7fb11cSYuval Mintz goto out; 3530a7fb11cSYuval Mintz } 3540a7fb11cSYuval Mintz 3550a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3560a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3570a7fb11cSYuval Mintz while (num_bds) { 3580a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3590a7fb11cSYuval Mintz goto out; 3600a7fb11cSYuval Mintz 3610a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3620a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3630a7fb11cSYuval Mintz if (!p_pkt) 3640a7fb11cSYuval Mintz goto out; 3650a7fb11cSYuval Mintz 3660a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3670a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3680a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3690a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3700a7fb11cSYuval Mintz 3710a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3720a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3730a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3740a7fb11cSYuval Mintz goto out; 3750a7fb11cSYuval Mintz } 3760a7fb11cSYuval Mintz 3770a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3780a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3790a7fb11cSYuval Mintz while (num_bds_in_packet--) 3800a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3810a7fb11cSYuval Mintz 3820a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3830a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3840a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3850a7fb11cSYuval Mintz 3860a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3870518c12fSMichal Kalderon 3880518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 389abd49676SRam Amrani p_ll2_conn->my_id, 390abd49676SRam Amrani p_pkt->cookie, 3910518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 392abd49676SRam Amrani b_last_frag, !num_bds); 3930518c12fSMichal Kalderon 3940a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3950a7fb11cSYuval Mintz } 3960a7fb11cSYuval Mintz 3970a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 3980a7fb11cSYuval Mintz rc = 0; 3990a7fb11cSYuval Mintz out: 4000a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 4010a7fb11cSYuval Mintz return rc; 4020a7fb11cSYuval Mintz } 4030a7fb11cSYuval Mintz 4040518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 405abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 4060518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 407abd49676SRam Amrani { 4080518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 4090518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 4100518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 4110518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 4120518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 4130518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 414da090917STomer Tayar data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id); 415da090917STomer Tayar 416da090917STomer Tayar data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp); 417abd49676SRam Amrani } 418abd49676SRam Amrani 41968be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 42068be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 42168be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 42268be910cSMintz, Yuval { 42368be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 4241e99c497SMichal Kalderon data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); 42568be910cSMintz, Yuval data->length.packet_length = 42668be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 42768be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 42868be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 42968be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 43068be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 43168be910cSMintz, Yuval } 43268be910cSMintz, Yuval 43368be910cSMintz, Yuval static int 4346f34a284SMichal Kalderon qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, 4356f34a284SMichal Kalderon struct qed_ll2_info *p_ll2_conn, 4366f34a284SMichal Kalderon union core_rx_cqe_union *p_cqe, 4376f34a284SMichal Kalderon unsigned long *p_lock_flags) 4386f34a284SMichal Kalderon { 4396f34a284SMichal Kalderon struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4406f34a284SMichal Kalderon struct core_rx_slow_path_cqe *sp_cqe; 4416f34a284SMichal Kalderon 4426f34a284SMichal Kalderon sp_cqe = &p_cqe->rx_cqe_sp; 4436f34a284SMichal Kalderon if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { 4446f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4456f34a284SMichal Kalderon "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", 4466f34a284SMichal Kalderon sp_cqe->ramrod_cmd_id); 4476f34a284SMichal Kalderon return -EINVAL; 4486f34a284SMichal Kalderon } 4496f34a284SMichal Kalderon 4506f34a284SMichal Kalderon if (!p_ll2_conn->cbs.slowpath_cb) { 4516f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4526f34a284SMichal Kalderon "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); 4536f34a284SMichal Kalderon return -EINVAL; 4546f34a284SMichal Kalderon } 4556f34a284SMichal Kalderon 4566f34a284SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4576f34a284SMichal Kalderon 4586f34a284SMichal Kalderon p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, 4596f34a284SMichal Kalderon p_ll2_conn->my_id, 4606f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[0]), 4616f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[1])); 4626f34a284SMichal Kalderon 4636f34a284SMichal Kalderon spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4646f34a284SMichal Kalderon 4656f34a284SMichal Kalderon return 0; 4666f34a284SMichal Kalderon } 4676f34a284SMichal Kalderon 4686f34a284SMichal Kalderon static int 46968be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4700a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4710a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 47268be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4730a7fb11cSYuval Mintz { 4740a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4750a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 47668be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4770a7fb11cSYuval Mintz 4780a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4790a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4800a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4810a7fb11cSYuval Mintz if (!p_pkt) { 4820a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 48368be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 48413c54771SMintz, Yuval p_ll2_conn->input.conn_type); 48568be910cSMintz, Yuval 4860a7fb11cSYuval Mintz return -EIO; 4870a7fb11cSYuval Mintz } 4880a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4890a7fb11cSYuval Mintz 4900518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 49168be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 4920518c12fSMichal Kalderon else 4930518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 4940a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 4950a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 4960a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 49768be910cSMintz, Yuval 4980a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 4990a7fb11cSYuval Mintz 50068be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 50168be910cSMintz, Yuval data.cookie = p_pkt->cookie; 50268be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 50368be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 50468be910cSMintz, Yuval 5051df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 5060518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 5070518c12fSMichal Kalderon 5081df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 5090a7fb11cSYuval Mintz 5100a7fb11cSYuval Mintz return 0; 5110a7fb11cSYuval Mintz } 5120a7fb11cSYuval Mintz 5130a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 5140a7fb11cSYuval Mintz { 51513c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 5160a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5170a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5180a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5190a7fb11cSYuval Mintz unsigned long flags = 0; 5200a7fb11cSYuval Mintz int rc = 0; 5210a7fb11cSYuval Mintz 5220a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 5230a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5240a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5250a7fb11cSYuval Mintz 5260a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5270a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5280a7fb11cSYuval Mintz 52913c54771SMintz, Yuval cqe = 53013c54771SMintz, Yuval (union core_rx_cqe_union *) 53113c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 5320a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5330a7fb11cSYuval Mintz 5340a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5350a7fb11cSYuval Mintz QED_MSG_LL2, 5360a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5370a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5380a7fb11cSYuval Mintz 5390a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5400a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5416f34a284SMichal Kalderon rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, 5426f34a284SMichal Kalderon cqe, &flags); 5430a7fb11cSYuval Mintz break; 544abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5450a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 54668be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5471df2adedSRam Amrani cqe, &flags, 5481df2adedSRam Amrani b_last_cqe); 5490a7fb11cSYuval Mintz break; 5500a7fb11cSYuval Mintz default: 5510a7fb11cSYuval Mintz rc = -EIO; 5520a7fb11cSYuval Mintz } 5530a7fb11cSYuval Mintz } 5540a7fb11cSYuval Mintz 5550a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5560a7fb11cSYuval Mintz return rc; 5570a7fb11cSYuval Mintz } 5580a7fb11cSYuval Mintz 5598c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5600a7fb11cSYuval Mintz { 5610a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5620a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5630a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5646291c608SMichal Kalderon unsigned long flags = 0; 5650a7fb11cSYuval Mintz 5660a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5670a7fb11cSYuval Mintz if (!p_ll2_conn) 5680a7fb11cSYuval Mintz return; 5690a7fb11cSYuval Mintz 5700a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5710a7fb11cSYuval Mintz 5726291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5730a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5740a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5750a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5760a7fb11cSYuval Mintz if (!p_pkt) 5770a7fb11cSYuval Mintz break; 578b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5796291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5800a7fb11cSYuval Mintz 581526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 5821d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5831d6cff4fSYuval Mintz 5841d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5851d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5861d6cff4fSYuval Mintz p_buffer); 5871d6cff4fSYuval Mintz } else { 58854f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 58954f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 59054f19f07SMintz, Yuval bool b_last; 5910a7fb11cSYuval Mintz 5920a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 59354f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 59454f19f07SMintz, Yuval p_ll2_conn->my_id, 59554f19f07SMintz, Yuval cookie, 59654f19f07SMintz, Yuval rx_buf_addr, b_last); 5970a7fb11cSYuval Mintz } 5986291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5990a7fb11cSYuval Mintz } 6006291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 6011d6cff4fSYuval Mintz } 6021d6cff4fSYuval Mintz 603974f6c04SMichal Kalderon static bool 604974f6c04SMichal Kalderon qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn, 605974f6c04SMichal Kalderon struct core_rx_slow_path_cqe *p_cqe) 606974f6c04SMichal Kalderon { 607974f6c04SMichal Kalderon struct ooo_opaque *iscsi_ooo; 608974f6c04SMichal Kalderon u32 cid; 609974f6c04SMichal Kalderon 610974f6c04SMichal Kalderon if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) 611974f6c04SMichal Kalderon return false; 612974f6c04SMichal Kalderon 613974f6c04SMichal Kalderon iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data; 614974f6c04SMichal Kalderon if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES) 615974f6c04SMichal Kalderon return false; 616974f6c04SMichal Kalderon 617974f6c04SMichal Kalderon /* Need to make a flush */ 618974f6c04SMichal Kalderon cid = le32_to_cpu(iscsi_ooo->cid); 619974f6c04SMichal Kalderon qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid); 620974f6c04SMichal Kalderon 621974f6c04SMichal Kalderon return true; 622974f6c04SMichal Kalderon } 623974f6c04SMichal Kalderon 6241d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6251d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6261d6cff4fSYuval Mintz { 6271d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6281d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6291d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6301d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6311d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6321d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6331d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6341d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 6351d6cff4fSYuval Mintz u8 placement_offset = 0; 6361d6cff4fSYuval Mintz u8 cqe_type; 6371d6cff4fSYuval Mintz 6381d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6391d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6401d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6411d6cff4fSYuval Mintz return 0; 6421d6cff4fSYuval Mintz 6431d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6441d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6451d6cff4fSYuval Mintz 6461d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6471d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6481d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6491d6cff4fSYuval Mintz 650974f6c04SMichal Kalderon if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH) 651974f6c04SMichal Kalderon if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn, 652974f6c04SMichal Kalderon &cqe->rx_cqe_sp)) 653974f6c04SMichal Kalderon continue; 654974f6c04SMichal Kalderon 6551d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 6561d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6571d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6581d6cff4fSYuval Mintz cqe_type); 6591d6cff4fSYuval Mintz return -EINVAL; 6601d6cff4fSYuval Mintz } 6611d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6621d6cff4fSYuval Mintz 6631d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6641d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6651d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6661d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6671d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6681d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6691d6cff4fSYuval Mintz iscsi_ooo); 6701d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6711d6cff4fSYuval Mintz 6721d6cff4fSYuval Mintz /* Process delete isle first */ 6731d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6741d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6751d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6761d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6771d6cff4fSYuval Mintz 6781d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6791d6cff4fSYuval Mintz continue; 6801d6cff4fSYuval Mintz 6811d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6821d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6831d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6841d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6851d6cff4fSYuval Mintz ); 6861d6cff4fSYuval Mintz return -EIO; 6871d6cff4fSYuval Mintz } 6881d6cff4fSYuval Mintz 6891d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6901d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6911d6cff4fSYuval Mintz 6921d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 6931d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 6941d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 6951d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 6961d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 6971d6cff4fSYuval Mintz if (!p_pkt) { 6981d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6991d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 7001d6cff4fSYuval Mintz return -EIO; 7011d6cff4fSYuval Mintz } 7021d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 7031d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 7041d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 7051d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 7061d6cff4fSYuval Mintz p_buffer->vlan = vlan; 7071d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 7081d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 7091d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 7101d6cff4fSYuval Mintz 7111d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 7121d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 7131d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 7141d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7151d6cff4fSYuval Mintz cid, 7161d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7171d6cff4fSYuval Mintz p_buffer); 7181d6cff4fSYuval Mintz break; 7191d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 7201d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7211d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7221d6cff4fSYuval Mintz cid, 7231d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7241d6cff4fSYuval Mintz p_buffer, 7251d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 7261d6cff4fSYuval Mintz break; 7271d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 7281d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7291d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7301d6cff4fSYuval Mintz cid, 7311d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7321d6cff4fSYuval Mintz p_buffer, 7331d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7341d6cff4fSYuval Mintz break; 7351d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7361d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7371d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7381d6cff4fSYuval Mintz cid, 7391d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 7401d6cff4fSYuval Mintz 1, 7411d6cff4fSYuval Mintz p_buffer, 7421d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7431d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7441d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7451d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 7461d6cff4fSYuval Mintz break; 7471d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7481d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7491d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7501d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7511d6cff4fSYuval Mintz p_buffer, true); 7521d6cff4fSYuval Mintz break; 7531d6cff4fSYuval Mintz } 7541d6cff4fSYuval Mintz } else { 7551d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7561d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 7571d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 7581d6cff4fSYuval Mintz } 7591d6cff4fSYuval Mintz } 7601d6cff4fSYuval Mintz 7611d6cff4fSYuval Mintz return 0; 7621d6cff4fSYuval Mintz } 7631d6cff4fSYuval Mintz 7641d6cff4fSYuval Mintz static void 7651d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7661d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7671d6cff4fSYuval Mintz { 7687c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7691d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7701d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7711d6cff4fSYuval Mintz dma_addr_t first_frag; 7721d6cff4fSYuval Mintz u8 bd_flags; 7737c7973b2SMintz, Yuval int rc; 7741d6cff4fSYuval Mintz 7751d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7761d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7771d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7781d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7791d6cff4fSYuval Mintz bd_flags = 0; 7801d6cff4fSYuval Mintz 7811d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7821d6cff4fSYuval Mintz p_buffer->placement_offset; 783be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 784be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 7851d6cff4fSYuval Mintz 7867c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 7877c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 7887c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 7897c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 7907c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 79113c54771SMintz, Yuval tx_pkt.tx_dest = p_ll2_conn->tx_dest; 7927c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 7937c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 7947c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 7957c7973b2SMintz, Yuval 7967c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 7977c7973b2SMintz, Yuval &tx_pkt, true); 7981d6cff4fSYuval Mintz if (rc) { 7991d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 8001d6cff4fSYuval Mintz p_buffer, false); 8011d6cff4fSYuval Mintz break; 8021d6cff4fSYuval Mintz } 8031d6cff4fSYuval Mintz } 8041d6cff4fSYuval Mintz } 8051d6cff4fSYuval Mintz 8061d6cff4fSYuval Mintz static void 8071d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 8081d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 8091d6cff4fSYuval Mintz { 8101d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8111d6cff4fSYuval Mintz int rc; 8121d6cff4fSYuval Mintz 8131d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 8141d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 8151d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 8161d6cff4fSYuval Mintz p_ll2_conn->my_id, 8171d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 8181d6cff4fSYuval Mintz 0, p_buffer, true); 8191d6cff4fSYuval Mintz if (rc) { 8201d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8211d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8221d6cff4fSYuval Mintz break; 8231d6cff4fSYuval Mintz } 8241d6cff4fSYuval Mintz } 8251d6cff4fSYuval Mintz } 8261d6cff4fSYuval Mintz 8271d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8281d6cff4fSYuval Mintz { 8291d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8301d6cff4fSYuval Mintz int rc; 8311d6cff4fSYuval Mintz 832fc16f56bSMichal Kalderon if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 833fc16f56bSMichal Kalderon return 0; 834fc16f56bSMichal Kalderon 8351d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8361d6cff4fSYuval Mintz if (rc) 8371d6cff4fSYuval Mintz return rc; 8381d6cff4fSYuval Mintz 8391d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8401d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8411d6cff4fSYuval Mintz 8421d6cff4fSYuval Mintz return 0; 8431d6cff4fSYuval Mintz } 8441d6cff4fSYuval Mintz 8451d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8461d6cff4fSYuval Mintz { 8471d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8481d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8491d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8501d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8511d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8521d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8531d6cff4fSYuval Mintz int rc; 8541d6cff4fSYuval Mintz 855fc16f56bSMichal Kalderon if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 856fc16f56bSMichal Kalderon return 0; 857fc16f56bSMichal Kalderon 8581d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8591d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8601d6cff4fSYuval Mintz 8611d6cff4fSYuval Mintz if (!num_bds) 8621d6cff4fSYuval Mintz return 0; 8631d6cff4fSYuval Mintz 8641d6cff4fSYuval Mintz while (num_bds) { 8651d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 8661d6cff4fSYuval Mintz return -EINVAL; 8671d6cff4fSYuval Mintz 8681d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8691d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8701d6cff4fSYuval Mintz if (!p_pkt) 8711d6cff4fSYuval Mintz return -EINVAL; 8721d6cff4fSYuval Mintz 8731d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8741d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8751d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8761d6cff4fSYuval Mintz p_pkt->bd_used); 8771d6cff4fSYuval Mintz return -EINVAL; 8781d6cff4fSYuval Mintz } 8791d6cff4fSYuval Mintz 8801d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 8811d6cff4fSYuval Mintz 8821d6cff4fSYuval Mintz num_bds--; 8831d6cff4fSYuval Mintz p_tx->bds_idx++; 8841d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 8851d6cff4fSYuval Mintz 8861d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 8871d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 8881d6cff4fSYuval Mintz 8891d6cff4fSYuval Mintz if (b_dont_submit_rx) { 8901d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 8911d6cff4fSYuval Mintz p_buffer); 8921d6cff4fSYuval Mintz continue; 8931d6cff4fSYuval Mintz } 8941d6cff4fSYuval Mintz 8951d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 8961d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 8971d6cff4fSYuval Mintz p_buffer, true); 8981d6cff4fSYuval Mintz if (rc != 0) { 8991d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 9001d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 9011d6cff4fSYuval Mintz b_dont_submit_rx = true; 9021d6cff4fSYuval Mintz } 9031d6cff4fSYuval Mintz } 9041d6cff4fSYuval Mintz 9051d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 9061d6cff4fSYuval Mintz 9071d6cff4fSYuval Mintz return 0; 9081d6cff4fSYuval Mintz } 9091d6cff4fSYuval Mintz 9101d6cff4fSYuval Mintz static void qed_ll2_stop_ooo(struct qed_dev *cdev) 9111d6cff4fSYuval Mintz { 9121d6cff4fSYuval Mintz struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 9131d6cff4fSYuval Mintz u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9141d6cff4fSYuval Mintz 9151d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n", 9161d6cff4fSYuval Mintz *handle); 9171d6cff4fSYuval Mintz 9181d6cff4fSYuval Mintz qed_ll2_terminate_connection(hwfn, *handle); 9191d6cff4fSYuval Mintz qed_ll2_release_connection(hwfn, *handle); 9201d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9211d6cff4fSYuval Mintz } 9221d6cff4fSYuval Mintz 9230a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 9240a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 9250a7fb11cSYuval Mintz u8 action_on_error) 9260a7fb11cSYuval Mintz { 92713c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9280a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 9290a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 9300a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9310a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9320a7fb11cSYuval Mintz u16 cqe_pbl_size; 9330a7fb11cSYuval Mintz int rc = 0; 9340a7fb11cSYuval Mintz 9350a7fb11cSYuval Mintz /* Get SPQ entry */ 9360a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9370a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9380a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9390a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9400a7fb11cSYuval Mintz 9410a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9420a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 9430a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9440a7fb11cSYuval Mintz if (rc) 9450a7fb11cSYuval Mintz return rc; 9460a7fb11cSYuval Mintz 9470a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 9480a7fb11cSYuval Mintz 9490a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9500a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 9510a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 9520a7fb11cSYuval Mintz 95313c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 95413c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 9550a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 9560a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 9570a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 9580a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 9590a7fb11cSYuval Mintz 96013c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 961da090917STomer Tayar p_ramrod->inner_vlan_stripping_en = 962da090917STomer Tayar p_ll2_conn->input.rx_vlan_removal_en; 963cac6f691SSudarsana Reddy Kalluru 964cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 965cac6f691SSudarsana Reddy Kalluru p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) 966cac6f691SSudarsana Reddy Kalluru p_ramrod->report_outer_vlan = 1; 9670a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 968ed468ebeSMichal Kalderon p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; 9690a7fb11cSYuval Mintz 9700bc5fe85SSudarsana Reddy Kalluru if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) && 9710bc5fe85SSudarsana Reddy Kalluru p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE && 9720bc5fe85SSudarsana Reddy Kalluru conn_type != QED_LL2_TYPE_IWARP) { 9730a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 9740a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 9750a7fb11cSYuval Mintz } else { 9760a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 9770a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 9780a7fb11cSYuval Mintz } 9790a7fb11cSYuval Mintz 9800a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 98113c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 9820a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 9830a7fb11cSYuval Mintz } 9840a7fb11cSYuval Mintz 9850a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 9860a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 9870a7fb11cSYuval Mintz { 98813c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9890a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 9900a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 9910a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9920a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9930a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 9940a7fb11cSYuval Mintz int rc = -EINVAL; 9950a7fb11cSYuval Mintz 9960a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 9970a7fb11cSYuval Mintz return 0; 9980a7fb11cSYuval Mintz 999526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 10001d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 10011d6cff4fSYuval Mintz else 10021d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 10031d6cff4fSYuval Mintz 10040a7fb11cSYuval Mintz /* Get SPQ entry */ 10050a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10060a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10070a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10080a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10090a7fb11cSYuval Mintz 10100a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10110a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 10120a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10130a7fb11cSYuval Mintz if (rc) 10140a7fb11cSYuval Mintz return rc; 10150a7fb11cSYuval Mintz 10160a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 10170a7fb11cSYuval Mintz 10180a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10190a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 102013c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 10210a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 10220a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 10230a7fb11cSYuval Mintz 10240a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 10250a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 10260a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 10270a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 10280a7fb11cSYuval Mintz 102913c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 1030526d1d05SKalderon, Michal case PURE_LB_TC: 1031b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 1032b5a9ee7cSAriel Elior break; 1033526d1d05SKalderon, Michal case PKT_LB_TC: 1034b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 1035827d240aSColin Ian King break; 1036b5a9ee7cSAriel Elior default: 1037b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 1038b5a9ee7cSAriel Elior break; 1039b5a9ee7cSAriel Elior } 1040b5a9ee7cSAriel Elior 10410a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 10420a7fb11cSYuval Mintz 10430a7fb11cSYuval Mintz switch (conn_type) { 10441e128c81SArun Easi case QED_LL2_TYPE_FCOE: 10451e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 10461e128c81SArun Easi break; 10470a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI: 10480a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ISCSI; 10490a7fb11cSYuval Mintz break; 10500a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 10510a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 10520a7fb11cSYuval Mintz break; 1053cc4ad324SKalderon, Michal case QED_LL2_TYPE_IWARP: 1054cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1055cc4ad324SKalderon, Michal break; 1056cc4ad324SKalderon, Michal case QED_LL2_TYPE_OOO: 1057cc4ad324SKalderon, Michal if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) 1058cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_ISCSI; 1059cc4ad324SKalderon, Michal else 1060cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1061cc4ad324SKalderon, Michal break; 10620a7fb11cSYuval Mintz default: 10630a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 10640a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 10650a7fb11cSYuval Mintz } 10660a7fb11cSYuval Mintz 106713c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 106813c54771SMintz, Yuval 10690a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10700a7fb11cSYuval Mintz } 10710a7fb11cSYuval Mintz 10720a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 10730a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10740a7fb11cSYuval Mintz { 10750a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 10760a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10770a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10780a7fb11cSYuval Mintz int rc = -EINVAL; 10790a7fb11cSYuval Mintz 10800a7fb11cSYuval Mintz /* Get SPQ entry */ 10810a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10820a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10830a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10840a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10850a7fb11cSYuval Mintz 10860a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10870a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 10880a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10890a7fb11cSYuval Mintz if (rc) 10900a7fb11cSYuval Mintz return rc; 10910a7fb11cSYuval Mintz 10920a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 10930a7fb11cSYuval Mintz 10940a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 10950a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 10960a7fb11cSYuval Mintz 10970a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10980a7fb11cSYuval Mintz } 10990a7fb11cSYuval Mintz 11000a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11010a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11020a7fb11cSYuval Mintz { 11030a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11040a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11050a7fb11cSYuval Mintz int rc = -EINVAL; 11060a7fb11cSYuval Mintz 11070a7fb11cSYuval Mintz /* Get SPQ entry */ 11080a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11090a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11100a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11110a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11120a7fb11cSYuval Mintz 11130a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11140a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11150a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11160a7fb11cSYuval Mintz if (rc) 11170a7fb11cSYuval Mintz return rc; 11180a7fb11cSYuval Mintz 11190a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11200a7fb11cSYuval Mintz } 11210a7fb11cSYuval Mintz 11220a7fb11cSYuval Mintz static int 11230a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 112413c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11250a7fb11cSYuval Mintz { 11260a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 11270a7fb11cSYuval Mintz u32 capacity; 11280a7fb11cSYuval Mintz int rc = 0; 11290a7fb11cSYuval Mintz 113013c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 11310a7fb11cSYuval Mintz goto out; 11320a7fb11cSYuval Mintz 11330a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11340a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11350a7fb11cSYuval Mintz QED_CHAIN_MODE_NEXT_PTR, 11360a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 113713c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 11380a7fb11cSYuval Mintz sizeof(struct core_rx_bd), 11391a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rxq_chain, NULL); 11400a7fb11cSYuval Mintz if (rc) { 11410a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 11420a7fb11cSYuval Mintz goto out; 11430a7fb11cSYuval Mintz } 11440a7fb11cSYuval Mintz 11450a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 11460a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 11470a7fb11cSYuval Mintz GFP_KERNEL); 11480a7fb11cSYuval Mintz if (!p_descq) { 11490a7fb11cSYuval Mintz rc = -ENOMEM; 11500a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 11510a7fb11cSYuval Mintz goto out; 11520a7fb11cSYuval Mintz } 11530a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 11540a7fb11cSYuval Mintz 11550a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11560a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11570a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 11580a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 115913c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 11600a7fb11cSYuval Mintz sizeof(struct core_rx_fast_path_cqe), 11611a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rcq_chain, NULL); 11620a7fb11cSYuval Mintz if (rc) { 11630a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 11640a7fb11cSYuval Mintz goto out; 11650a7fb11cSYuval Mintz } 11660a7fb11cSYuval Mintz 11670a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 11680a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 116913c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 11700a7fb11cSYuval Mintz 11710a7fb11cSYuval Mintz out: 11720a7fb11cSYuval Mintz return rc; 11730a7fb11cSYuval Mintz } 11740a7fb11cSYuval Mintz 11750a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 117613c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11770a7fb11cSYuval Mintz { 11780a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 1179f5823fe6SMichal Kalderon u32 desc_size; 11800a7fb11cSYuval Mintz u32 capacity; 11810a7fb11cSYuval Mintz int rc = 0; 11820a7fb11cSYuval Mintz 118313c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 11840a7fb11cSYuval Mintz goto out; 11850a7fb11cSYuval Mintz 11860a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11870a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11880a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 11890a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 119013c54771SMintz, Yuval p_ll2_info->input.tx_num_desc, 11910a7fb11cSYuval Mintz sizeof(struct core_tx_bd), 11921a4a6975SMintz, Yuval &p_ll2_info->tx_queue.txq_chain, NULL); 11930a7fb11cSYuval Mintz if (rc) 11940a7fb11cSYuval Mintz goto out; 11950a7fb11cSYuval Mintz 11960a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 1197f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1198f5823fe6SMichal Kalderon desc_size = (sizeof(*p_descq) + 1199f5823fe6SMichal Kalderon (p_ll2_info->input.tx_max_bds_per_packet - 1) * 1200f5823fe6SMichal Kalderon sizeof(p_descq->bds_set)); 1201f5823fe6SMichal Kalderon 1202f5823fe6SMichal Kalderon p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); 12030a7fb11cSYuval Mintz if (!p_descq) { 12040a7fb11cSYuval Mintz rc = -ENOMEM; 12050a7fb11cSYuval Mintz goto out; 12060a7fb11cSYuval Mintz } 1207f5823fe6SMichal Kalderon p_ll2_info->tx_queue.descq_mem = p_descq; 12080a7fb11cSYuval Mintz 12090a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12100a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 121113c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 12120a7fb11cSYuval Mintz 12130a7fb11cSYuval Mintz out: 12140a7fb11cSYuval Mintz if (rc) 12150a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12160a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 121713c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 12180a7fb11cSYuval Mintz return rc; 12190a7fb11cSYuval Mintz } 12200a7fb11cSYuval Mintz 122113c54771SMintz, Yuval static int 122213c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 122313c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 122413c54771SMintz, Yuval { 122513c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 122613c54771SMintz, Yuval void *p_virt; 122713c54771SMintz, Yuval u16 buf_idx; 122813c54771SMintz, Yuval int rc = 0; 122913c54771SMintz, Yuval 1230526d1d05SKalderon, Michal if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO) 123113c54771SMintz, Yuval return rc; 123213c54771SMintz, Yuval 123313c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 123413c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 123513c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 123613c54771SMintz, Yuval 123713c54771SMintz, Yuval if (!num_desc) 123813c54771SMintz, Yuval return -EINVAL; 123913c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 124013c54771SMintz, Yuval } 124113c54771SMintz, Yuval 124213c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 124313c54771SMintz, Yuval buf_idx++) { 124413c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 124513c54771SMintz, Yuval if (!p_buf) { 124613c54771SMintz, Yuval rc = -ENOMEM; 124713c54771SMintz, Yuval goto out; 124813c54771SMintz, Yuval } 124913c54771SMintz, Yuval 125013c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 125113c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 125213c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 125313c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 125413c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 125513c54771SMintz, Yuval p_buf->rx_buffer_size, 125613c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 125713c54771SMintz, Yuval GFP_KERNEL); 125813c54771SMintz, Yuval if (!p_virt) { 125913c54771SMintz, Yuval kfree(p_buf); 126013c54771SMintz, Yuval rc = -ENOMEM; 126113c54771SMintz, Yuval goto out; 126213c54771SMintz, Yuval } 126313c54771SMintz, Yuval 126413c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 126513c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 126613c54771SMintz, Yuval } 126713c54771SMintz, Yuval 126813c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 126913c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 127013c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 127113c54771SMintz, Yuval 127213c54771SMintz, Yuval out: 127313c54771SMintz, Yuval return rc; 127413c54771SMintz, Yuval } 127513c54771SMintz, Yuval 12760518c12fSMichal Kalderon static int 12770518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 12780518c12fSMichal Kalderon { 12790518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 12800518c12fSMichal Kalderon !cbs->rx_release_cb || 12810518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 12820518c12fSMichal Kalderon return -EINVAL; 12830518c12fSMichal Kalderon 12840518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 12850518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 12860518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 12870518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 12886f34a284SMichal Kalderon p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; 12890518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 12900518c12fSMichal Kalderon 12910518c12fSMichal Kalderon return 0; 12920518c12fSMichal Kalderon } 12930518c12fSMichal Kalderon 129413c54771SMintz, Yuval static enum core_error_handle 129513c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 129613c54771SMintz, Yuval { 129713c54771SMintz, Yuval switch (err) { 129813c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 129913c54771SMintz, Yuval return LL2_DROP_PACKET; 130013c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 130113c54771SMintz, Yuval return LL2_DO_NOTHING; 130213c54771SMintz, Yuval case QED_LL2_ASSERT: 130313c54771SMintz, Yuval return LL2_ASSERT; 130413c54771SMintz, Yuval default: 130513c54771SMintz, Yuval return LL2_DO_NOTHING; 130613c54771SMintz, Yuval } 130713c54771SMintz, Yuval } 130813c54771SMintz, Yuval 13090518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 13100a7fb11cSYuval Mintz { 13110518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13120a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13130a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 131413c54771SMintz, Yuval u8 i, *p_tx_max; 13150a7fb11cSYuval Mintz int rc; 13160a7fb11cSYuval Mintz 131713c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 13180a7fb11cSYuval Mintz return -EINVAL; 13190a7fb11cSYuval Mintz 13200a7fb11cSYuval Mintz /* Find a free connection to be used */ 13210a7fb11cSYuval Mintz for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { 13220a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13230a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13240a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13250a7fb11cSYuval Mintz continue; 13260a7fb11cSYuval Mintz } 13270a7fb11cSYuval Mintz 13280a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13290a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13300a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13310a7fb11cSYuval Mintz break; 13320a7fb11cSYuval Mintz } 13330a7fb11cSYuval Mintz if (!p_ll2_info) 13340a7fb11cSYuval Mintz return -EBUSY; 13350a7fb11cSYuval Mintz 133613c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 13370a7fb11cSYuval Mintz 1338da090917STomer Tayar switch (data->input.tx_dest) { 1339da090917STomer Tayar case QED_LL2_TX_DEST_NW: 1340da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_NW; 1341da090917STomer Tayar break; 1342da090917STomer Tayar case QED_LL2_TX_DEST_LB: 1343da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_LB; 1344da090917STomer Tayar break; 1345da090917STomer Tayar case QED_LL2_TX_DEST_DROP: 1346da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_DROP; 1347da090917STomer Tayar break; 1348da090917STomer Tayar default: 1349da090917STomer Tayar return -EINVAL; 1350da090917STomer Tayar } 1351da090917STomer Tayar 1352ed468ebeSMichal Kalderon if (data->input.conn_type == QED_LL2_TYPE_OOO || 1353ed468ebeSMichal Kalderon data->input.secondary_queue) 1354ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = false; 1355ed468ebeSMichal Kalderon else 1356ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = true; 135713c54771SMintz, Yuval 135813c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 135913c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 136013c54771SMintz, Yuval if (*p_tx_max == 0) 136113c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 136213c54771SMintz, Yuval else 136313c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 136413c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 13650518c12fSMichal Kalderon 13660518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 13670518c12fSMichal Kalderon if (rc) { 13680518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 13690518c12fSMichal Kalderon goto q_allocate_fail; 13700518c12fSMichal Kalderon } 13710518c12fSMichal Kalderon 137213c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 13730a7fb11cSYuval Mintz if (rc) 13740a7fb11cSYuval Mintz goto q_allocate_fail; 13750a7fb11cSYuval Mintz 137613c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 13770a7fb11cSYuval Mintz if (rc) 13780a7fb11cSYuval Mintz goto q_allocate_fail; 13790a7fb11cSYuval Mintz 13801d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 138113c54771SMintz, Yuval data->input.mtu); 13821d6cff4fSYuval Mintz if (rc) 13831d6cff4fSYuval Mintz goto q_allocate_fail; 13841d6cff4fSYuval Mintz 13850a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 1386526d1d05SKalderon, Michal if (data->input.conn_type == QED_LL2_TYPE_OOO) { 13871d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 13881d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 13891d6cff4fSYuval Mintz } else { 13900a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 13910a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 13921d6cff4fSYuval Mintz } 13930a7fb11cSYuval Mintz 139413c54771SMintz, Yuval if (data->input.rx_num_desc) { 13950a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 13960a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 13970a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 13980a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 13990a7fb11cSYuval Mintz p_ll2_info->rx_queue.b_cb_registred = true; 14000a7fb11cSYuval Mintz } 14010a7fb11cSYuval Mintz 140213c54771SMintz, Yuval if (data->input.tx_num_desc) { 14030a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 14040a7fb11cSYuval Mintz comp_tx_cb, 14050a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14060a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 14070a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 14080a7fb11cSYuval Mintz p_ll2_info->tx_queue.b_cb_registred = true; 14090a7fb11cSYuval Mintz } 14100a7fb11cSYuval Mintz 141113c54771SMintz, Yuval *data->p_connection_handle = i; 14120a7fb11cSYuval Mintz return rc; 14130a7fb11cSYuval Mintz 14140a7fb11cSYuval Mintz q_allocate_fail: 14150a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 14160a7fb11cSYuval Mintz return -ENOMEM; 14170a7fb11cSYuval Mintz } 14180a7fb11cSYuval Mintz 14190a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 14200a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 14210a7fb11cSYuval Mintz { 142213c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 142313c54771SMintz, Yuval enum core_error_handle error_mode; 14240a7fb11cSYuval Mintz u8 action_on_error = 0; 14250a7fb11cSYuval Mintz 14260a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 14270a7fb11cSYuval Mintz return 0; 14280a7fb11cSYuval Mintz 14290a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 143013c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 143113c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 14320a7fb11cSYuval Mintz SET_FIELD(action_on_error, 143313c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 143413c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 143513c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 143613c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 14370a7fb11cSYuval Mintz 14380a7fb11cSYuval Mintz return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 14390a7fb11cSYuval Mintz } 14400a7fb11cSYuval Mintz 144158de2898SMintz, Yuval static void 144258de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 144358de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 144458de2898SMintz, Yuval { 1445526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 144658de2898SMintz, Yuval return; 144758de2898SMintz, Yuval 144858de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 144958de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 145058de2898SMintz, Yuval } 14510518c12fSMichal Kalderon 14520518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 14530a7fb11cSYuval Mintz { 14540518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 14550a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 1456f5823fe6SMichal Kalderon struct qed_ll2_tx_packet *p_pkt; 14570a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 14580a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 145915582962SRahul Verma struct qed_ptt *p_ptt; 14600a7fb11cSYuval Mintz int rc = -EINVAL; 14610a7fb11cSYuval Mintz u32 i, capacity; 1462f5823fe6SMichal Kalderon u32 desc_size; 14630a7fb11cSYuval Mintz u8 qid; 14640a7fb11cSYuval Mintz 146515582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 146615582962SRahul Verma if (!p_ptt) 146715582962SRahul Verma return -EAGAIN; 146815582962SRahul Verma 14690a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 147015582962SRahul Verma if (!p_ll2_conn) { 147115582962SRahul Verma rc = -EINVAL; 147215582962SRahul Verma goto out; 147315582962SRahul Verma } 147415582962SRahul Verma 14750a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 14760a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 14770a7fb11cSYuval Mintz 14780a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 14790a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 14800a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 14810a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 14820a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 14830a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 14840a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 14850a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 14860a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 14870a7fb11cSYuval Mintz &p_rx->free_descq); 14880a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 14890a7fb11cSYuval Mintz 14900a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 14910a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 14920a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 14930a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 14940a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 14950a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 1496f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1497f5823fe6SMichal Kalderon desc_size = (sizeof(*p_pkt) + 1498f5823fe6SMichal Kalderon (p_ll2_conn->input.tx_max_bds_per_packet - 1) * 1499f5823fe6SMichal Kalderon sizeof(p_pkt->bds_set)); 1500f5823fe6SMichal Kalderon 1501f5823fe6SMichal Kalderon for (i = 0; i < capacity; i++) { 1502f5823fe6SMichal Kalderon p_pkt = p_tx->descq_mem + desc_size * i; 1503f5823fe6SMichal Kalderon list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 1504f5823fe6SMichal Kalderon } 15050a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 15060a7fb11cSYuval Mintz p_tx->bds_idx = 0; 15070a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 15080a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 15090a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15100a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 15110a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 15120a7fb11cSYuval Mintz 151315582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 151415582962SRahul Verma if (rc) 151515582962SRahul Verma goto out; 15160a7fb11cSYuval Mintz 15170a7fb11cSYuval Mintz qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; 15180a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 15190a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 15200a7fb11cSYuval Mintz p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + 15210a7fb11cSYuval Mintz GTT_BAR0_MAP_REG_TSDM_RAM + 15220a7fb11cSYuval Mintz TSTORM_LL2_RX_PRODS_OFFSET(qid); 15230a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 15240a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 15250a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 15260a7fb11cSYuval Mintz 15270a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 15280a7fb11cSYuval Mintz if (rc) 152915582962SRahul Verma goto out; 15300a7fb11cSYuval Mintz 15310a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 15320a7fb11cSYuval Mintz if (rc) 153315582962SRahul Verma goto out; 15340a7fb11cSYuval Mintz 1535c851a9dcSKalderon, Michal if (!QED_IS_RDMA_PERSONALITY(p_hwfn)) 153615582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 15370a7fb11cSYuval Mintz 15381d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 15391d6cff4fSYuval Mintz 154013c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1541cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 154215582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 1543cac6f691SSudarsana Reddy Kalluru ETH_P_FCOE, 0, 15441e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 154515582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 1546cac6f691SSudarsana Reddy Kalluru ETH_P_FIP, 0, 15471e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 15481e128c81SArun Easi } 15491e128c81SArun Easi 155015582962SRahul Verma out: 155115582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 15520a7fb11cSYuval Mintz return rc; 15530a7fb11cSYuval Mintz } 15540a7fb11cSYuval Mintz 15550a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 15560a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 15570a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 15580a7fb11cSYuval Mintz { 15590a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 15600a7fb11cSYuval Mintz struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; 15610a7fb11cSYuval Mintz bool b_notify_fw = false; 15620a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 15630a7fb11cSYuval Mintz 15640a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 15650a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 15660a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 15670a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 15680a7fb11cSYuval Mintz list_entry); 1569b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 15700a7fb11cSYuval Mintz &p_rx->active_descq); 15710a7fb11cSYuval Mintz b_notify_fw = true; 15720a7fb11cSYuval Mintz } 15730a7fb11cSYuval Mintz 15740a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 15750a7fb11cSYuval Mintz if (p_curp) { 15760a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 15770a7fb11cSYuval Mintz b_notify_fw = true; 15780a7fb11cSYuval Mintz } 15790a7fb11cSYuval Mintz 15800a7fb11cSYuval Mintz if (!b_notify_fw) 15810a7fb11cSYuval Mintz return; 15820a7fb11cSYuval Mintz 15830a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 15840a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 15850a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 15860a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 15870a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 15880a7fb11cSYuval Mintz } 15890a7fb11cSYuval Mintz 15900518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 15910a7fb11cSYuval Mintz u8 connection_handle, 15920a7fb11cSYuval Mintz dma_addr_t addr, 15930a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 15940a7fb11cSYuval Mintz { 15950518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 15960a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 15970a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 15980a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 15990a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 16000a7fb11cSYuval Mintz unsigned long flags; 16010a7fb11cSYuval Mintz void *p_data; 16020a7fb11cSYuval Mintz int rc = 0; 16030a7fb11cSYuval Mintz 16040a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 16050a7fb11cSYuval Mintz if (!p_ll2_conn) 16060a7fb11cSYuval Mintz return -EINVAL; 16070a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 16080a7fb11cSYuval Mintz 16090a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 16100a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 16110a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 16120a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 16130a7fb11cSYuval Mintz if (p_curp) { 16140a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 16150a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 16160a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 16170a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 16180a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 16190a7fb11cSYuval Mintz } 16200a7fb11cSYuval Mintz } 16210a7fb11cSYuval Mintz 16220a7fb11cSYuval Mintz /* If we're lacking entires, let's try to flush buffers to FW */ 16230a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 16240a7fb11cSYuval Mintz rc = -EBUSY; 16250a7fb11cSYuval Mintz p_curp = NULL; 16260a7fb11cSYuval Mintz goto out_notify; 16270a7fb11cSYuval Mintz } 16280a7fb11cSYuval Mintz 16290a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 16300a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 16310a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 16320a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 16330a7fb11cSYuval Mintz p_curp->cookie = cookie; 16340a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 16350a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 16360a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 16370a7fb11cSYuval Mintz 16380a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 16390a7fb11cSYuval Mintz if (!notify_fw) { 16400a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 16410a7fb11cSYuval Mintz goto out; 16420a7fb11cSYuval Mintz } 16430a7fb11cSYuval Mintz 16440a7fb11cSYuval Mintz out_notify: 16450a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 16460a7fb11cSYuval Mintz out: 16470a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 16480a7fb11cSYuval Mintz return rc; 16490a7fb11cSYuval Mintz } 16500a7fb11cSYuval Mintz 16510a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 16520a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 16530a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 16547c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 16550a7fb11cSYuval Mintz u8 notify_fw) 16560a7fb11cSYuval Mintz { 16570a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 16587c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 16597c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 16600a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 16610a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 16620a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 16630a7fb11cSYuval Mintz 16647c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 16657c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 16660a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 16670a7fb11cSYuval Mintz } 16680a7fb11cSYuval Mintz 1669be086e7cSMintz, Yuval static void 1670be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 16710a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 16720a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 16737c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 16740a7fb11cSYuval Mintz { 16750a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 16760a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 16770a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 16787c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 16797c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1680be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 16810a7fb11cSYuval Mintz 16827c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 16837c7973b2SMintz, Yuval : CORE_RROCE; 16847c7973b2SMintz, Yuval 168577caa792SMichal Kalderon switch (pkt->tx_dest) { 168677caa792SMichal Kalderon case QED_LL2_TX_DEST_NW: 168777caa792SMichal Kalderon tx_dest = CORE_TX_DEST_NW; 168877caa792SMichal Kalderon break; 168977caa792SMichal Kalderon case QED_LL2_TX_DEST_LB: 169077caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 169177caa792SMichal Kalderon break; 169277caa792SMichal Kalderon case QED_LL2_TX_DEST_DROP: 169377caa792SMichal Kalderon tx_dest = CORE_TX_DEST_DROP; 169477caa792SMichal Kalderon break; 169577caa792SMichal Kalderon default: 169677caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 169777caa792SMichal Kalderon break; 169877caa792SMichal Kalderon } 16997c7973b2SMintz, Yuval 17000a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 170189d65113SMichal Kalderon if (QED_IS_IWARP_PERSONALITY(p_hwfn) && 1702cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_OOO) { 170389d65113SMichal Kalderon start_bd->nw_vlan_or_lb_echo = 170489d65113SMichal Kalderon cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); 1705cac6f691SSudarsana Reddy Kalluru } else { 17067c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 1707cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 1708cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_FCOE) 1709cac6f691SSudarsana Reddy Kalluru pkt->remove_stag = true; 1710cac6f691SSudarsana Reddy Kalluru } 1711cac6f691SSudarsana Reddy Kalluru 17120a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, 17137c7973b2SMintz, Yuval cpu_to_le16(pkt->l4_hdr_offset_w)); 17140a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); 17157c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1716be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 17177c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1718be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 17196df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); 17206df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); 17216df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); 1722cac6f691SSudarsana Reddy Kalluru SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION, 1723cac6f691SSudarsana Reddy Kalluru !!(pkt->remove_stag)); 1724cac6f691SSudarsana Reddy Kalluru 1725be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 17267c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 17277c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 17280a7fb11cSYuval Mintz 17290a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 17300a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 17310a7fb11cSYuval 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", 17320a7fb11cSYuval Mintz p_ll2->queue_id, 17330a7fb11cSYuval Mintz p_ll2->cid, 173413c54771SMintz, Yuval p_ll2->input.conn_type, 17350a7fb11cSYuval Mintz prod_idx, 17367c7973b2SMintz, Yuval pkt->first_frag_len, 17377c7973b2SMintz, Yuval pkt->num_of_bds, 17380a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 17390a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 17400a7fb11cSYuval Mintz 17417c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 17420a7fb11cSYuval Mintz return; 17430a7fb11cSYuval Mintz 17440a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 17450a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 17467c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 17470a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 17480a7fb11cSYuval Mintz 17490a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1750be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 17510a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 17520a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 17530a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 17540a7fb11cSYuval Mintz } 17550a7fb11cSYuval Mintz } 17560a7fb11cSYuval Mintz 17570a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 17580a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 17590a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 17600a7fb11cSYuval Mintz { 17610a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 17620a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 17630a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 17640a7fb11cSYuval Mintz struct core_db_data db_msg = { 0, 0, 0 }; 17650a7fb11cSYuval Mintz u16 bd_prod; 17660a7fb11cSYuval Mintz 17670a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 17680a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 17690a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 17700a7fb11cSYuval Mintz return; 17710a7fb11cSYuval Mintz 17720a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 17730a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 17740a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 17750a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 17760a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 17770a7fb11cSYuval Mintz 17780a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 17790a7fb11cSYuval Mintz if (!b_notify) 17800a7fb11cSYuval Mintz return; 17810a7fb11cSYuval Mintz 17820a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 17830a7fb11cSYuval Mintz 17840a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 17850a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 17860a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 17870a7fb11cSYuval Mintz if (!p_pkt) 17880a7fb11cSYuval Mintz break; 17890a7fb11cSYuval Mintz 1790b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 17910a7fb11cSYuval Mintz } 17920a7fb11cSYuval Mintz 17930a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 17940a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 17950a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 17960a7fb11cSYuval Mintz DQ_XCM_CORE_TX_BD_PROD_CMD); 17970a7fb11cSYuval Mintz db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 17980a7fb11cSYuval Mintz db_msg.spq_prod = cpu_to_le16(bd_prod); 17990a7fb11cSYuval Mintz 18000a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 18010a7fb11cSYuval Mintz wmb(); 18020a7fb11cSYuval Mintz 18030a7fb11cSYuval Mintz DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); 18040a7fb11cSYuval Mintz 18050a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 18060a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 18070a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 18080a7fb11cSYuval Mintz p_ll2_conn->queue_id, 180913c54771SMintz, Yuval p_ll2_conn->cid, 181013c54771SMintz, Yuval p_ll2_conn->input.conn_type, db_msg.spq_prod); 18110a7fb11cSYuval Mintz } 18120a7fb11cSYuval Mintz 18130518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 18140a7fb11cSYuval Mintz u8 connection_handle, 18157c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 18167c7973b2SMintz, Yuval bool notify_fw) 18170a7fb11cSYuval Mintz { 18180518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 18190a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 18200a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18210a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 18220a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 18230a7fb11cSYuval Mintz unsigned long flags; 18240a7fb11cSYuval Mintz int rc = 0; 18250a7fb11cSYuval Mintz 18260a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18270a7fb11cSYuval Mintz if (!p_ll2_conn) 18280a7fb11cSYuval Mintz return -EINVAL; 18290a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 18300a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 18310a7fb11cSYuval Mintz 1832f5823fe6SMichal Kalderon if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet) 18330a7fb11cSYuval Mintz return -EIO; 18340a7fb11cSYuval Mintz 18350a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 18360a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 18370a7fb11cSYuval Mintz rc = -EEXIST; 18380a7fb11cSYuval Mintz goto out; 18390a7fb11cSYuval Mintz } 18400a7fb11cSYuval Mintz 18410a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 18420a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 18430a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 18440a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 18457c7973b2SMintz, Yuval if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds) 18460a7fb11cSYuval Mintz p_curp = NULL; 18470a7fb11cSYuval Mintz 18480a7fb11cSYuval Mintz if (!p_curp) { 18490a7fb11cSYuval Mintz rc = -EBUSY; 18500a7fb11cSYuval Mintz goto out; 18510a7fb11cSYuval Mintz } 18520a7fb11cSYuval Mintz 18530a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 18547c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 18557c7973b2SMintz, Yuval 18567c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 18570a7fb11cSYuval Mintz 18580a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 18590a7fb11cSYuval Mintz 18600a7fb11cSYuval Mintz out: 18610a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 18620a7fb11cSYuval Mintz return rc; 18630a7fb11cSYuval Mintz } 18640a7fb11cSYuval Mintz 18650518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 18660a7fb11cSYuval Mintz u8 connection_handle, 18670a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 18680a7fb11cSYuval Mintz { 18690a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 18700518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 18710a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18720a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 18730a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 18740a7fb11cSYuval Mintz unsigned long flags; 18750a7fb11cSYuval Mintz 18760a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18770a7fb11cSYuval Mintz if (!p_ll2_conn) 18780a7fb11cSYuval Mintz return -EINVAL; 18790a7fb11cSYuval Mintz 18800a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 18810a7fb11cSYuval Mintz return -EINVAL; 18820a7fb11cSYuval Mintz 18830a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 18840a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 18850a7fb11cSYuval Mintz 18860a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 18870a7fb11cSYuval Mintz return -EINVAL; 18880a7fb11cSYuval Mintz 18890a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 18900a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 18910a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 18920a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 18930a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 18940a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 18950a7fb11cSYuval Mintz 18960a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 18970a7fb11cSYuval Mintz 18980a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 18990a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 19000a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 19010a7fb11cSYuval Mintz 19020a7fb11cSYuval Mintz return 0; 19030a7fb11cSYuval Mintz } 19040a7fb11cSYuval Mintz 19050518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 19060a7fb11cSYuval Mintz { 19070518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19080a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19090a7fb11cSYuval Mintz int rc = -EINVAL; 191015582962SRahul Verma struct qed_ptt *p_ptt; 191115582962SRahul Verma 191215582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 191315582962SRahul Verma if (!p_ptt) 191415582962SRahul Verma return -EAGAIN; 19150a7fb11cSYuval Mintz 19160a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 191715582962SRahul Verma if (!p_ll2_conn) { 191815582962SRahul Verma rc = -EINVAL; 191915582962SRahul Verma goto out; 192015582962SRahul Verma } 19210a7fb11cSYuval Mintz 19220a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 19230a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 1924fc16f56bSMichal Kalderon p_ll2_conn->tx_queue.b_cb_registred = false; 1925fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 19260a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 19270a7fb11cSYuval Mintz if (rc) 192815582962SRahul Verma goto out; 1929fc16f56bSMichal Kalderon 19300a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 1931fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 19320a7fb11cSYuval Mintz } 19330a7fb11cSYuval Mintz 19340a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 1935fc16f56bSMichal Kalderon p_ll2_conn->rx_queue.b_cb_registred = false; 1936fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 19370a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 19380a7fb11cSYuval Mintz if (rc) 193915582962SRahul Verma goto out; 1940fc16f56bSMichal Kalderon 19410a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 1942fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 19430a7fb11cSYuval Mintz } 19440a7fb11cSYuval Mintz 1945526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 19461d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 19471d6cff4fSYuval Mintz 194813c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1949cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 195015582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 1951cac6f691SSudarsana Reddy Kalluru ETH_P_FCOE, 0, 19521e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 195315582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 1954cac6f691SSudarsana Reddy Kalluru ETH_P_FIP, 0, 19551e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 19561e128c81SArun Easi } 19571e128c81SArun Easi 195815582962SRahul Verma out: 195915582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 19600a7fb11cSYuval Mintz return rc; 19610a7fb11cSYuval Mintz } 19620a7fb11cSYuval Mintz 196358de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 196458de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 196558de2898SMintz, Yuval { 196658de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 196758de2898SMintz, Yuval 1968526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 196958de2898SMintz, Yuval return; 197058de2898SMintz, Yuval 197158de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 197258de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 197358de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 197458de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 197558de2898SMintz, Yuval p_buffer->rx_buffer_size, 197658de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 197758de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 197858de2898SMintz, Yuval kfree(p_buffer); 197958de2898SMintz, Yuval } 198058de2898SMintz, Yuval } 19810518c12fSMichal Kalderon 19820518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 19830a7fb11cSYuval Mintz { 19840518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19850a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19860a7fb11cSYuval Mintz 19870a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 19880a7fb11cSYuval Mintz if (!p_ll2_conn) 19890a7fb11cSYuval Mintz return; 19900a7fb11cSYuval Mintz 1991f5823fe6SMichal Kalderon kfree(p_ll2_conn->tx_queue.descq_mem); 19920a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 19930a7fb11cSYuval Mintz 19940a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 19950a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 19960a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 19970a7fb11cSYuval Mintz 19980a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 19990a7fb11cSYuval Mintz 20001d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 20011d6cff4fSYuval Mintz 20020a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 20030a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 20040a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 20050a7fb11cSYuval Mintz } 20060a7fb11cSYuval Mintz 20073587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 20080a7fb11cSYuval Mintz { 20090a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 20100a7fb11cSYuval Mintz u8 i; 20110a7fb11cSYuval Mintz 20120a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 20130a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 20140a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 20150a7fb11cSYuval Mintz if (!p_ll2_connections) { 20160a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 20173587cb87STomer Tayar return -ENOMEM; 20180a7fb11cSYuval Mintz } 20190a7fb11cSYuval Mintz 20200a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 20210a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 20220a7fb11cSYuval Mintz 20233587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 20243587cb87STomer Tayar return 0; 20250a7fb11cSYuval Mintz } 20260a7fb11cSYuval Mintz 20273587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 20280a7fb11cSYuval Mintz { 20290a7fb11cSYuval Mintz int i; 20300a7fb11cSYuval Mintz 20310a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 20323587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 20330a7fb11cSYuval Mintz } 20340a7fb11cSYuval Mintz 20353587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 20360a7fb11cSYuval Mintz { 20373587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 20383587cb87STomer Tayar return; 20393587cb87STomer Tayar 20403587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 20413587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 20420a7fb11cSYuval Mintz } 20430a7fb11cSYuval Mintz 2044fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 2045fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 2046fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 2047fef1c3f7SMintz, Yuval { 2048fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 2049fef1c3f7SMintz, Yuval 2050fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 2051fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 2052fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 2053fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 2054fef1c3f7SMintz, Yuval sizeof(port_stats)); 2055fef1c3f7SMintz, Yuval 2056fef1c3f7SMintz, Yuval p_stats->gsi_invalid_hdr = HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 2057fef1c3f7SMintz, Yuval p_stats->gsi_invalid_pkt_length = 2058fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 2059fef1c3f7SMintz, Yuval p_stats->gsi_unsupported_pkt_typ = 2060fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 2061fef1c3f7SMintz, Yuval p_stats->gsi_crcchksm_error = 2062fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 2063fef1c3f7SMintz, Yuval } 2064fef1c3f7SMintz, Yuval 20650a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, 20660a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 20670a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 20680a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 20690a7fb11cSYuval Mintz { 20700a7fb11cSYuval Mintz struct core_ll2_tstorm_per_queue_stat tstats; 20710a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 20720a7fb11cSYuval Mintz u32 tstats_addr; 20730a7fb11cSYuval Mintz 20740a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 20750a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 20760a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 20770a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 20780a7fb11cSYuval Mintz 20790a7fb11cSYuval Mintz p_stats->packet_too_big_discard = 20800a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 20810a7fb11cSYuval Mintz p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard); 20820a7fb11cSYuval Mintz } 20830a7fb11cSYuval Mintz 20840a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 20850a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 20860a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 20870a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 20880a7fb11cSYuval Mintz { 20890a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 20900a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 20910a7fb11cSYuval Mintz u32 ustats_addr; 20920a7fb11cSYuval Mintz 20930a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 20940a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 20950a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 20960a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 20970a7fb11cSYuval Mintz 20980a7fb11cSYuval Mintz p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 20990a7fb11cSYuval Mintz p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 21000a7fb11cSYuval Mintz p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 21010a7fb11cSYuval Mintz p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 21020a7fb11cSYuval Mintz p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 21030a7fb11cSYuval Mintz p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 21040a7fb11cSYuval Mintz } 21050a7fb11cSYuval Mintz 21060a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 21070a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 21080a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 21090a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 21100a7fb11cSYuval Mintz { 21110a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 21120a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 21130a7fb11cSYuval Mintz u32 pstats_addr; 21140a7fb11cSYuval Mintz 21150a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 21160a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 21170a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 21180a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 21190a7fb11cSYuval Mintz 21200a7fb11cSYuval Mintz p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes); 21210a7fb11cSYuval Mintz p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes); 21220a7fb11cSYuval Mintz p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes); 21230a7fb11cSYuval Mintz p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts); 21240a7fb11cSYuval Mintz p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts); 21250a7fb11cSYuval Mintz p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts); 21260a7fb11cSYuval Mintz } 21270a7fb11cSYuval Mintz 21280518c12fSMichal Kalderon int qed_ll2_get_stats(void *cxt, 21290a7fb11cSYuval Mintz u8 connection_handle, struct qed_ll2_stats *p_stats) 21300a7fb11cSYuval Mintz { 21310518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21320a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 21330a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 21340a7fb11cSYuval Mintz 21350a7fb11cSYuval Mintz memset(p_stats, 0, sizeof(*p_stats)); 21360a7fb11cSYuval Mintz 21370a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 21380a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 21390a7fb11cSYuval Mintz return -EINVAL; 21400a7fb11cSYuval Mintz 21410a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 21420a7fb11cSYuval Mintz 21430a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 21440a7fb11cSYuval Mintz if (!p_ptt) { 21450a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 21460a7fb11cSYuval Mintz return -EINVAL; 21470a7fb11cSYuval Mintz } 21480a7fb11cSYuval Mintz 2149fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2150fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 21510a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21520a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21530a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 21540a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21550a7fb11cSYuval Mintz 21560a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 21570a7fb11cSYuval Mintz return 0; 21580a7fb11cSYuval Mintz } 21590a7fb11cSYuval Mintz 21600518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 21610518c12fSMichal Kalderon u8 connection_handle, 21620518c12fSMichal Kalderon void *cookie, 21630518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 21640518c12fSMichal Kalderon bool b_last_packet) 21650518c12fSMichal Kalderon { 21660518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21670518c12fSMichal Kalderon 21680518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 21690518c12fSMichal Kalderon } 21700518c12fSMichal Kalderon 21710a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 21720a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 21730a7fb11cSYuval Mintz void *cookie) 21740a7fb11cSYuval Mintz { 21750a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 21760a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 21770a7fb11cSYuval Mintz } 21780a7fb11cSYuval Mintz 21790518c12fSMichal Kalderon struct qed_ll2_cbs ll2_cbs = { 21800518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 21810518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 21820518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 21830518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 21840518c12fSMichal Kalderon }; 21850518c12fSMichal Kalderon 218613c54771SMintz, Yuval static void qed_ll2_set_conn_data(struct qed_dev *cdev, 218713c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 218813c54771SMintz, Yuval struct qed_ll2_params *params, 218913c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 21900518c12fSMichal Kalderon u8 *handle, bool lb) 219113c54771SMintz, Yuval { 219213c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 219313c54771SMintz, Yuval 219413c54771SMintz, Yuval data->input.conn_type = conn_type; 219513c54771SMintz, Yuval data->input.mtu = params->mtu; 219613c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 219713c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 219813c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 219913c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 220013c54771SMintz, Yuval data->p_connection_handle = handle; 22010518c12fSMichal Kalderon data->cbs = &ll2_cbs; 22020518c12fSMichal Kalderon ll2_cbs.cookie = QED_LEADING_HWFN(cdev); 22030518c12fSMichal Kalderon 220413c54771SMintz, Yuval if (lb) { 2205526d1d05SKalderon, Michal data->input.tx_tc = PKT_LB_TC; 220613c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 220713c54771SMintz, Yuval } else { 220813c54771SMintz, Yuval data->input.tx_tc = 0; 220913c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 221013c54771SMintz, Yuval } 221113c54771SMintz, Yuval } 221213c54771SMintz, Yuval 221313c54771SMintz, Yuval static int qed_ll2_start_ooo(struct qed_dev *cdev, 221413c54771SMintz, Yuval struct qed_ll2_params *params) 221513c54771SMintz, Yuval { 221613c54771SMintz, Yuval struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 221713c54771SMintz, Yuval u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 221813c54771SMintz, Yuval struct qed_ll2_acquire_data data; 221913c54771SMintz, Yuval int rc; 222013c54771SMintz, Yuval 222113c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, 2222526d1d05SKalderon, Michal QED_LL2_TYPE_OOO, handle, true); 222313c54771SMintz, Yuval 222413c54771SMintz, Yuval rc = qed_ll2_acquire_connection(hwfn, &data); 222513c54771SMintz, Yuval if (rc) { 222613c54771SMintz, Yuval DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n"); 222713c54771SMintz, Yuval goto out; 222813c54771SMintz, Yuval } 222913c54771SMintz, Yuval 223013c54771SMintz, Yuval rc = qed_ll2_establish_connection(hwfn, *handle); 223113c54771SMintz, Yuval if (rc) { 223213c54771SMintz, Yuval DP_INFO(cdev, "Failed to establist LL2 OOO connection\n"); 223313c54771SMintz, Yuval goto fail; 223413c54771SMintz, Yuval } 223513c54771SMintz, Yuval 223613c54771SMintz, Yuval return 0; 223713c54771SMintz, Yuval 223813c54771SMintz, Yuval fail: 223913c54771SMintz, Yuval qed_ll2_release_connection(hwfn, *handle); 224013c54771SMintz, Yuval out: 224113c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 224213c54771SMintz, Yuval return rc; 224313c54771SMintz, Yuval } 224413c54771SMintz, Yuval 22450a7fb11cSYuval Mintz static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 22460a7fb11cSYuval Mintz { 224788a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 22480a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 224913c54771SMintz, Yuval struct qed_ll2_acquire_data data; 22500a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 22510a7fb11cSYuval Mintz int rc, i; 22520518c12fSMichal Kalderon 22530a7fb11cSYuval Mintz 22540a7fb11cSYuval Mintz /* Initialize LL2 locks & lists */ 22550a7fb11cSYuval Mintz INIT_LIST_HEAD(&cdev->ll2->list); 22560a7fb11cSYuval Mintz spin_lock_init(&cdev->ll2->lock); 22570a7fb11cSYuval Mintz cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 22580a7fb11cSYuval Mintz L1_CACHE_BYTES + params->mtu; 22590a7fb11cSYuval Mintz 22600a7fb11cSYuval Mintz /*Allocate memory for LL2 */ 22610a7fb11cSYuval Mintz DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", 22620a7fb11cSYuval Mintz cdev->ll2->rx_size); 22630a7fb11cSYuval Mintz for (i = 0; i < QED_LL2_RX_SIZE; i++) { 22640a7fb11cSYuval Mintz buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 22650a7fb11cSYuval Mintz if (!buffer) { 22660a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 22670a7fb11cSYuval Mintz goto fail; 22680a7fb11cSYuval Mintz } 22690a7fb11cSYuval Mintz 22700a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 22710a7fb11cSYuval Mintz &buffer->phys_addr); 22720a7fb11cSYuval Mintz if (rc) { 22730a7fb11cSYuval Mintz kfree(buffer); 22740a7fb11cSYuval Mintz goto fail; 22750a7fb11cSYuval Mintz } 22760a7fb11cSYuval Mintz 22770a7fb11cSYuval Mintz list_add_tail(&buffer->list, &cdev->ll2->list); 22780a7fb11cSYuval Mintz } 22790a7fb11cSYuval Mintz 22800a7fb11cSYuval Mintz switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { 22811e128c81SArun Easi case QED_PCI_FCOE: 22821e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 22831e128c81SArun Easi break; 22840a7fb11cSYuval Mintz case QED_PCI_ISCSI: 22850a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ISCSI; 22860a7fb11cSYuval Mintz break; 22870a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 22880a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 22890a7fb11cSYuval Mintz break; 22900a7fb11cSYuval Mintz default: 22910a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 22920a7fb11cSYuval Mintz } 22930a7fb11cSYuval Mintz 229413c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, conn_type, 22950518c12fSMichal Kalderon &cdev->ll2->handle, false); 22960629a330SArnd Bergmann 229713c54771SMintz, Yuval rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data); 22980a7fb11cSYuval Mintz if (rc) { 22990a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire LL2 connection\n"); 23000a7fb11cSYuval Mintz goto fail; 23010a7fb11cSYuval Mintz } 23020a7fb11cSYuval Mintz 23030a7fb11cSYuval Mintz rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), 23040a7fb11cSYuval Mintz cdev->ll2->handle); 23050a7fb11cSYuval Mintz if (rc) { 23060a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to establish LL2 connection\n"); 23070a7fb11cSYuval Mintz goto release_fail; 23080a7fb11cSYuval Mintz } 23090a7fb11cSYuval Mintz 23100a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 23110a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 231288a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 23130a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), 23140a7fb11cSYuval Mintz cdev->ll2->handle, 23150a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 23160a7fb11cSYuval Mintz if (rc) { 23170a7fb11cSYuval Mintz DP_INFO(cdev, 23180a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 23190a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 23200a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 23210a7fb11cSYuval Mintz kfree(buffer->data); 23220a7fb11cSYuval Mintz list_del(&buffer->list); 23230a7fb11cSYuval Mintz kfree(buffer); 23240a7fb11cSYuval Mintz } else { 23250a7fb11cSYuval Mintz cdev->ll2->rx_cnt++; 23260a7fb11cSYuval Mintz } 23270a7fb11cSYuval Mintz } 23280a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 23290a7fb11cSYuval Mintz 23300a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) { 23310a7fb11cSYuval Mintz DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); 23320a7fb11cSYuval Mintz goto release_terminate; 23330a7fb11cSYuval Mintz } 23340a7fb11cSYuval Mintz 23350a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 23360a7fb11cSYuval Mintz DP_INFO(cdev, "Invalid Ethernet address\n"); 23370a7fb11cSYuval Mintz goto release_terminate; 23380a7fb11cSYuval Mintz } 23390a7fb11cSYuval Mintz 2340da090917STomer Tayar if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI) { 23411d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 23421d6cff4fSYuval Mintz rc = qed_ll2_start_ooo(cdev, params); 23431d6cff4fSYuval Mintz if (rc) { 23441d6cff4fSYuval Mintz DP_INFO(cdev, 23451d6cff4fSYuval Mintz "Failed to initialize the OOO LL2 queue\n"); 23461d6cff4fSYuval Mintz goto release_terminate; 23471d6cff4fSYuval Mintz } 23481d6cff4fSYuval Mintz } 23491d6cff4fSYuval Mintz 23500a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 23510a7fb11cSYuval Mintz if (!p_ptt) { 23520a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 23530a7fb11cSYuval Mintz goto release_terminate; 23540a7fb11cSYuval Mintz } 23550a7fb11cSYuval Mintz 23560a7fb11cSYuval Mintz rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 23570a7fb11cSYuval Mintz params->ll2_mac_address); 23580a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 23590a7fb11cSYuval Mintz if (rc) { 23600a7fb11cSYuval Mintz DP_ERR(cdev, "Failed to allocate LLH filter\n"); 23610a7fb11cSYuval Mintz goto release_terminate_all; 23620a7fb11cSYuval Mintz } 23630a7fb11cSYuval Mintz 23640a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 23650a7fb11cSYuval Mintz return 0; 23660a7fb11cSYuval Mintz 23670a7fb11cSYuval Mintz release_terminate_all: 23680a7fb11cSYuval Mintz 23690a7fb11cSYuval Mintz release_terminate: 23700a7fb11cSYuval Mintz qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 23710a7fb11cSYuval Mintz release_fail: 23720a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 23730a7fb11cSYuval Mintz fail: 23740a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 23750a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 23760a7fb11cSYuval Mintz return -EINVAL; 23770a7fb11cSYuval Mintz } 23780a7fb11cSYuval Mintz 23790a7fb11cSYuval Mintz static int qed_ll2_stop(struct qed_dev *cdev) 23800a7fb11cSYuval Mintz { 23810a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 23820a7fb11cSYuval Mintz int rc; 23830a7fb11cSYuval Mintz 23840a7fb11cSYuval Mintz if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 23850a7fb11cSYuval Mintz return 0; 23860a7fb11cSYuval Mintz 23870a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 23880a7fb11cSYuval Mintz if (!p_ptt) { 23890a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 23900a7fb11cSYuval Mintz goto fail; 23910a7fb11cSYuval Mintz } 23920a7fb11cSYuval Mintz 23930a7fb11cSYuval Mintz qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 23940a7fb11cSYuval Mintz cdev->ll2_mac_address); 23950a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 23960a7fb11cSYuval Mintz eth_zero_addr(cdev->ll2_mac_address); 23970a7fb11cSYuval Mintz 2398da090917STomer Tayar if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI) 23991d6cff4fSYuval Mintz qed_ll2_stop_ooo(cdev); 24001d6cff4fSYuval Mintz 24010a7fb11cSYuval Mintz rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), 24020a7fb11cSYuval Mintz cdev->ll2->handle); 24030a7fb11cSYuval Mintz if (rc) 24040a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 24050a7fb11cSYuval Mintz 24060a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 24070a7fb11cSYuval Mintz 24080a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 24090a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 24100a7fb11cSYuval Mintz 24110a7fb11cSYuval Mintz return rc; 24120a7fb11cSYuval Mintz fail: 24130a7fb11cSYuval Mintz return -EINVAL; 24140a7fb11cSYuval Mintz } 24150a7fb11cSYuval Mintz 2416cac6f691SSudarsana Reddy Kalluru static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, 2417cac6f691SSudarsana Reddy Kalluru unsigned long xmit_flags) 24180a7fb11cSYuval Mintz { 24197c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 24200a7fb11cSYuval Mintz const skb_frag_t *frag; 24210a7fb11cSYuval Mintz int rc = -EINVAL, i; 24220a7fb11cSYuval Mintz dma_addr_t mapping; 24230a7fb11cSYuval Mintz u16 vlan = 0; 24240a7fb11cSYuval Mintz u8 flags = 0; 24250a7fb11cSYuval Mintz 24260a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 2427ff81de73SColin Ian King DP_INFO(cdev, "Cannot transmit a checksummed packet\n"); 24280a7fb11cSYuval Mintz return -EINVAL; 24290a7fb11cSYuval Mintz } 24300a7fb11cSYuval Mintz 24310a7fb11cSYuval Mintz if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 24320a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 24330a7fb11cSYuval Mintz 1 + skb_shinfo(skb)->nr_frags); 24340a7fb11cSYuval Mintz return -EINVAL; 24350a7fb11cSYuval Mintz } 24360a7fb11cSYuval Mintz 24370a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 24380a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 24390a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 24400a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 24410a7fb11cSYuval Mintz return -EINVAL; 24420a7fb11cSYuval Mintz } 24430a7fb11cSYuval Mintz 24440a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 24450a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 24460a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2447be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 24480a7fb11cSYuval Mintz 24490a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 24500a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2451be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 24520a7fb11cSYuval Mintz } 24530a7fb11cSYuval Mintz 24547c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 24557c7973b2SMintz, Yuval pkt.num_of_bds = 1 + skb_shinfo(skb)->nr_frags; 24567c7973b2SMintz, Yuval pkt.vlan = vlan; 24577c7973b2SMintz, Yuval pkt.bd_flags = flags; 24587c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 24597c7973b2SMintz, Yuval pkt.first_frag = mapping; 24607c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 24617c7973b2SMintz, Yuval pkt.cookie = skb; 2462cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) && 2463cac6f691SSudarsana Reddy Kalluru test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags)) 2464cac6f691SSudarsana Reddy Kalluru pkt.remove_stag = true; 24657c7973b2SMintz, Yuval 24667c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(&cdev->hwfns[0], cdev->ll2->handle, 24677c7973b2SMintz, Yuval &pkt, 1); 24680a7fb11cSYuval Mintz if (rc) 24690a7fb11cSYuval Mintz goto err; 24700a7fb11cSYuval Mintz 24710a7fb11cSYuval Mintz for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 24720a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 24730a7fb11cSYuval Mintz 2474d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2475d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2476d2201a21SMintz, Yuval 2477d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 24780a7fb11cSYuval Mintz DP_NOTICE(cdev, 24790a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 24800a7fb11cSYuval Mintz goto err; 24810a7fb11cSYuval Mintz } 24820a7fb11cSYuval Mintz 24830a7fb11cSYuval Mintz rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), 24840a7fb11cSYuval Mintz cdev->ll2->handle, 24850a7fb11cSYuval Mintz mapping, 24860a7fb11cSYuval Mintz skb_frag_size(frag)); 24870a7fb11cSYuval Mintz 24880a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 24890a7fb11cSYuval Mintz * we can't free memory, will need to wait for completion. 24900a7fb11cSYuval Mintz */ 24910a7fb11cSYuval Mintz if (rc) 24920a7fb11cSYuval Mintz goto err2; 24930a7fb11cSYuval Mintz } 24940a7fb11cSYuval Mintz 24950a7fb11cSYuval Mintz return 0; 24960a7fb11cSYuval Mintz 24970a7fb11cSYuval Mintz err: 24980a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 24990a7fb11cSYuval Mintz 25000a7fb11cSYuval Mintz err2: 25010a7fb11cSYuval Mintz return rc; 25020a7fb11cSYuval Mintz } 25030a7fb11cSYuval Mintz 25040a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 25050a7fb11cSYuval Mintz { 25060a7fb11cSYuval Mintz if (!cdev->ll2) 25070a7fb11cSYuval Mintz return -EINVAL; 25080a7fb11cSYuval Mintz 25090a7fb11cSYuval Mintz return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 25100a7fb11cSYuval Mintz cdev->ll2->handle, stats); 25110a7fb11cSYuval Mintz } 25120a7fb11cSYuval Mintz 25130a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 25140a7fb11cSYuval Mintz .start = &qed_ll2_start, 25150a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 25160a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 25170a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 25180a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 25190a7fb11cSYuval Mintz }; 25200a7fb11cSYuval Mintz 25210a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 25220a7fb11cSYuval Mintz { 25230a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 25240a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 25250a7fb11cSYuval Mintz } 25260a7fb11cSYuval Mintz 25270a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 25280a7fb11cSYuval Mintz { 25290a7fb11cSYuval Mintz kfree(cdev->ll2); 25300a7fb11cSYuval Mintz cdev->ll2 = NULL; 25310a7fb11cSYuval Mintz } 2532