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 666a42b512SColin Ian King #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered) 676a42b512SColin Ian King #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered) 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 161bf774d14SYueHaibing static void qed_ll2b_complete_rx_packet(void *cxt, 162bf774d14SYueHaibing struct qed_ll2_comp_rx_data *data) 1630a7fb11cSYuval Mintz { 1640518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 16568be910cSMintz, Yuval struct qed_ll2_buffer *buffer = data->cookie; 1660a7fb11cSYuval Mintz struct qed_dev *cdev = p_hwfn->cdev; 1670a7fb11cSYuval Mintz dma_addr_t new_phys_addr; 1680a7fb11cSYuval Mintz struct sk_buff *skb; 1690a7fb11cSYuval Mintz bool reuse = false; 1700a7fb11cSYuval Mintz int rc = -EINVAL; 1710a7fb11cSYuval Mintz u8 *new_data; 1720a7fb11cSYuval Mintz 1730a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 1740a7fb11cSYuval Mintz (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), 1750a7fb11cSYuval 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", 17668be910cSMintz, Yuval (u64)data->rx_buf_addr, 17768be910cSMintz, Yuval data->u.placement_offset, 17868be910cSMintz, Yuval data->length.packet_length, 17968be910cSMintz, Yuval data->parse_flags, 18068be910cSMintz, Yuval data->vlan, data->opaque_data_0, data->opaque_data_1); 1810a7fb11cSYuval Mintz 1820a7fb11cSYuval Mintz if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { 1830a7fb11cSYuval Mintz print_hex_dump(KERN_INFO, "", 1840a7fb11cSYuval Mintz DUMP_PREFIX_OFFSET, 16, 1, 18568be910cSMintz, Yuval buffer->data, data->length.packet_length, false); 1860a7fb11cSYuval Mintz } 1870a7fb11cSYuval Mintz 1880a7fb11cSYuval Mintz /* Determine if data is valid */ 18968be910cSMintz, Yuval if (data->length.packet_length < ETH_HLEN) 1900a7fb11cSYuval Mintz reuse = true; 1910a7fb11cSYuval Mintz 1920a7fb11cSYuval Mintz /* Allocate a replacement for buffer; Reuse upon failure */ 1930a7fb11cSYuval Mintz if (!reuse) 1940a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, 1950a7fb11cSYuval Mintz &new_phys_addr); 1960a7fb11cSYuval Mintz 1970a7fb11cSYuval Mintz /* If need to reuse or there's no replacement buffer, repost this */ 1980a7fb11cSYuval Mintz if (rc) 1990a7fb11cSYuval Mintz goto out_post; 200752ecb2dSMintz, Yuval dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 201752ecb2dSMintz, Yuval cdev->ll2->rx_size, DMA_FROM_DEVICE); 2020a7fb11cSYuval Mintz 2030a7fb11cSYuval Mintz skb = build_skb(buffer->data, 0); 2040a7fb11cSYuval Mintz if (!skb) { 2054f9de4dfSSudarsana Reddy Kalluru DP_INFO(cdev, "Failed to build SKB\n"); 2064f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 2074f9de4dfSSudarsana Reddy Kalluru goto out_post1; 2080a7fb11cSYuval Mintz } 2090a7fb11cSYuval Mintz 21068be910cSMintz, Yuval data->u.placement_offset += NET_SKB_PAD; 21168be910cSMintz, Yuval skb_reserve(skb, data->u.placement_offset); 21268be910cSMintz, Yuval skb_put(skb, data->length.packet_length); 2130a7fb11cSYuval Mintz skb_checksum_none_assert(skb); 2140a7fb11cSYuval Mintz 2150a7fb11cSYuval Mintz /* Get parital ethernet information instead of eth_type_trans(), 2160a7fb11cSYuval Mintz * Since we don't have an associated net_device. 2170a7fb11cSYuval Mintz */ 2180a7fb11cSYuval Mintz skb_reset_mac_header(skb); 2190a7fb11cSYuval Mintz skb->protocol = eth_hdr(skb)->h_proto; 2200a7fb11cSYuval Mintz 2210a7fb11cSYuval Mintz /* Pass SKB onward */ 2220a7fb11cSYuval Mintz if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { 22368be910cSMintz, Yuval if (data->vlan) 22468be910cSMintz, Yuval __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 22568be910cSMintz, Yuval data->vlan); 2260a7fb11cSYuval Mintz cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, 22768be910cSMintz, Yuval data->opaque_data_0, 22868be910cSMintz, Yuval data->opaque_data_1); 2294f9de4dfSSudarsana Reddy Kalluru } else { 2304f9de4dfSSudarsana Reddy Kalluru DP_VERBOSE(p_hwfn, (NETIF_MSG_RX_STATUS | NETIF_MSG_PKTDATA | 2314f9de4dfSSudarsana Reddy Kalluru QED_MSG_LL2 | QED_MSG_STORAGE), 2324f9de4dfSSudarsana Reddy Kalluru "Dropping the packet\n"); 2334f9de4dfSSudarsana Reddy Kalluru kfree(buffer->data); 2340a7fb11cSYuval Mintz } 2350a7fb11cSYuval Mintz 2364f9de4dfSSudarsana Reddy Kalluru out_post1: 2370a7fb11cSYuval Mintz /* Update Buffer information and update FW producer */ 2380a7fb11cSYuval Mintz buffer->data = new_data; 2390a7fb11cSYuval Mintz buffer->phys_addr = new_phys_addr; 2400a7fb11cSYuval Mintz 2410a7fb11cSYuval Mintz out_post: 2420a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle, 2430a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2440a7fb11cSYuval Mintz 2450a7fb11cSYuval Mintz if (rc) 2460a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 2470a7fb11cSYuval Mintz } 2480a7fb11cSYuval Mintz 2490a7fb11cSYuval Mintz static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2500a7fb11cSYuval Mintz u8 connection_handle, 2510a7fb11cSYuval Mintz bool b_lock, 2520a7fb11cSYuval Mintz bool b_only_active) 2530a7fb11cSYuval Mintz { 2540a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2550a7fb11cSYuval Mintz 2560a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2570a7fb11cSYuval Mintz return NULL; 2580a7fb11cSYuval Mintz 2590a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2600a7fb11cSYuval Mintz return NULL; 2610a7fb11cSYuval Mintz 2620a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2630a7fb11cSYuval Mintz 2640a7fb11cSYuval Mintz if (b_only_active) { 2650a7fb11cSYuval Mintz if (b_lock) 2660a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2670a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2680a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2690a7fb11cSYuval Mintz if (b_lock) 2700a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2710a7fb11cSYuval Mintz } else { 2720a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2730a7fb11cSYuval Mintz } 2740a7fb11cSYuval Mintz 2750a7fb11cSYuval Mintz return p_ret; 2760a7fb11cSYuval Mintz } 2770a7fb11cSYuval Mintz 2780a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2790a7fb11cSYuval Mintz u8 connection_handle) 2800a7fb11cSYuval Mintz { 2810a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2820a7fb11cSYuval Mintz } 2830a7fb11cSYuval Mintz 2840a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2850a7fb11cSYuval Mintz u8 connection_handle) 2860a7fb11cSYuval Mintz { 2870a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2880a7fb11cSYuval Mintz } 2890a7fb11cSYuval Mintz 2900a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2910a7fb11cSYuval Mintz *p_hwfn, 2920a7fb11cSYuval Mintz u8 connection_handle) 2930a7fb11cSYuval Mintz { 2940a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2950a7fb11cSYuval Mintz } 2960a7fb11cSYuval Mintz 2970a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 2980a7fb11cSYuval Mintz { 2990a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 3000a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 3010a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 3020a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 3036291c608SMichal Kalderon unsigned long flags = 0; 304abd49676SRam Amrani dma_addr_t tx_frag; 3050a7fb11cSYuval Mintz 3060a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 3070a7fb11cSYuval Mintz if (!p_ll2_conn) 3080a7fb11cSYuval Mintz return; 3090a7fb11cSYuval Mintz 3100a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 3110a7fb11cSYuval Mintz 3126291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3130a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 3140a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3150a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3160a7fb11cSYuval Mintz if (!p_pkt) 3170a7fb11cSYuval Mintz break; 3180a7fb11cSYuval Mintz 3190a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3200a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 3210a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3226291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 323526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 3241d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 3251d6cff4fSYuval Mintz 3261d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3271d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3281d6cff4fSYuval Mintz p_buffer); 3291d6cff4fSYuval Mintz } else { 3300a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3310a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3321d6cff4fSYuval Mintz b_last_frag = 3331d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 334abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3350518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 336abd49676SRam Amrani p_ll2_conn->my_id, 337abd49676SRam Amrani p_pkt->cookie, 338abd49676SRam Amrani tx_frag, 339abd49676SRam Amrani b_last_frag, 340abd49676SRam Amrani b_last_packet); 3411d6cff4fSYuval Mintz } 3426291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3430a7fb11cSYuval Mintz } 3446291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 3450a7fb11cSYuval Mintz } 3460a7fb11cSYuval Mintz 3470a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3480a7fb11cSYuval Mintz { 3490a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3500a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3510a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3520a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3530a7fb11cSYuval Mintz bool b_last_frag = false; 3540a7fb11cSYuval Mintz unsigned long flags; 3550a7fb11cSYuval Mintz int rc = -EINVAL; 3560a7fb11cSYuval Mintz 3570a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3580a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3590a7fb11cSYuval Mintz rc = -EBUSY; 3600a7fb11cSYuval Mintz goto out; 3610a7fb11cSYuval Mintz } 3620a7fb11cSYuval Mintz 3630a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3640a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3650a7fb11cSYuval Mintz while (num_bds) { 3660a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3670a7fb11cSYuval Mintz goto out; 3680a7fb11cSYuval Mintz 3690a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3700a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3710a7fb11cSYuval Mintz if (!p_pkt) 3720a7fb11cSYuval Mintz goto out; 3730a7fb11cSYuval Mintz 3740a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3750a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3760a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3770a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3780a7fb11cSYuval Mintz 3790a7fb11cSYuval Mintz if (num_bds < num_bds_in_packet) { 3800a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3810a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3820a7fb11cSYuval Mintz goto out; 3830a7fb11cSYuval Mintz } 3840a7fb11cSYuval Mintz 3850a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3860a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3870a7fb11cSYuval Mintz while (num_bds_in_packet--) 3880a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3890a7fb11cSYuval Mintz 3900a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3910a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3920a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3930a7fb11cSYuval Mintz 3940a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3950518c12fSMichal Kalderon 3960518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 397abd49676SRam Amrani p_ll2_conn->my_id, 398abd49676SRam Amrani p_pkt->cookie, 3990518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 400abd49676SRam Amrani b_last_frag, !num_bds); 4010518c12fSMichal Kalderon 4020a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 4030a7fb11cSYuval Mintz } 4040a7fb11cSYuval Mintz 4050a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 4060a7fb11cSYuval Mintz rc = 0; 4070a7fb11cSYuval Mintz out: 4080a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 4090a7fb11cSYuval Mintz return rc; 4100a7fb11cSYuval Mintz } 4110a7fb11cSYuval Mintz 4120518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 413abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 4140518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 415abd49676SRam Amrani { 4160518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 4170518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 4180518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 4190518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 4200518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 4210518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 422da090917STomer Tayar data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id); 423da090917STomer Tayar 424da090917STomer Tayar data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp); 425abd49676SRam Amrani } 426abd49676SRam Amrani 42768be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 42868be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 42968be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 43068be910cSMintz, Yuval { 43168be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 4321e99c497SMichal Kalderon data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); 43368be910cSMintz, Yuval data->length.packet_length = 43468be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 43568be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 43668be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 43768be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 43868be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 43968be910cSMintz, Yuval } 44068be910cSMintz, Yuval 44168be910cSMintz, Yuval static int 4426f34a284SMichal Kalderon qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, 4436f34a284SMichal Kalderon struct qed_ll2_info *p_ll2_conn, 4446f34a284SMichal Kalderon union core_rx_cqe_union *p_cqe, 4456f34a284SMichal Kalderon unsigned long *p_lock_flags) 4466f34a284SMichal Kalderon { 4476f34a284SMichal Kalderon struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4486f34a284SMichal Kalderon struct core_rx_slow_path_cqe *sp_cqe; 4496f34a284SMichal Kalderon 4506f34a284SMichal Kalderon sp_cqe = &p_cqe->rx_cqe_sp; 4516f34a284SMichal Kalderon if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { 4526f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4536f34a284SMichal Kalderon "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", 4546f34a284SMichal Kalderon sp_cqe->ramrod_cmd_id); 4556f34a284SMichal Kalderon return -EINVAL; 4566f34a284SMichal Kalderon } 4576f34a284SMichal Kalderon 4586f34a284SMichal Kalderon if (!p_ll2_conn->cbs.slowpath_cb) { 4596f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4606f34a284SMichal Kalderon "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); 4616f34a284SMichal Kalderon return -EINVAL; 4626f34a284SMichal Kalderon } 4636f34a284SMichal Kalderon 4646f34a284SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4656f34a284SMichal Kalderon 4666f34a284SMichal Kalderon p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, 4676f34a284SMichal Kalderon p_ll2_conn->my_id, 4686f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[0]), 4696f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[1])); 4706f34a284SMichal Kalderon 4716f34a284SMichal Kalderon spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4726f34a284SMichal Kalderon 4736f34a284SMichal Kalderon return 0; 4746f34a284SMichal Kalderon } 4756f34a284SMichal Kalderon 4766f34a284SMichal Kalderon static int 47768be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4780a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4790a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 48068be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4810a7fb11cSYuval Mintz { 4820a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4830a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 48468be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4850a7fb11cSYuval Mintz 4860a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4870a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4880a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 4890a7fb11cSYuval Mintz if (!p_pkt) { 4900a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 49168be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 49213c54771SMintz, Yuval p_ll2_conn->input.conn_type); 49368be910cSMintz, Yuval 4940a7fb11cSYuval Mintz return -EIO; 4950a7fb11cSYuval Mintz } 4960a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4970a7fb11cSYuval Mintz 4980518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 49968be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 5000518c12fSMichal Kalderon else 5010518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 5020a7fb11cSYuval Mintz if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) 5030a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 5040a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 50568be910cSMintz, Yuval 5060a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 5070a7fb11cSYuval Mintz 50868be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 50968be910cSMintz, Yuval data.cookie = p_pkt->cookie; 51068be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 51168be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 51268be910cSMintz, Yuval 5131df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 5140518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 5150518c12fSMichal Kalderon 5161df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 5170a7fb11cSYuval Mintz 5180a7fb11cSYuval Mintz return 0; 5190a7fb11cSYuval Mintz } 5200a7fb11cSYuval Mintz 5210a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 5220a7fb11cSYuval Mintz { 52313c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 5240a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5250a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5260a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5270a7fb11cSYuval Mintz unsigned long flags = 0; 5280a7fb11cSYuval Mintz int rc = 0; 5290a7fb11cSYuval Mintz 5300a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 5310a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5320a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5330a7fb11cSYuval Mintz 5340a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5350a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5360a7fb11cSYuval Mintz 53713c54771SMintz, Yuval cqe = 53813c54771SMintz, Yuval (union core_rx_cqe_union *) 53913c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 5400a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5410a7fb11cSYuval Mintz 5420a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5430a7fb11cSYuval Mintz QED_MSG_LL2, 5440a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5450a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5460a7fb11cSYuval Mintz 5470a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5480a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5496f34a284SMichal Kalderon rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, 5506f34a284SMichal Kalderon cqe, &flags); 5510a7fb11cSYuval Mintz break; 552abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5530a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 55468be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5551df2adedSRam Amrani cqe, &flags, 5561df2adedSRam Amrani b_last_cqe); 5570a7fb11cSYuval Mintz break; 5580a7fb11cSYuval Mintz default: 5590a7fb11cSYuval Mintz rc = -EIO; 5600a7fb11cSYuval Mintz } 5610a7fb11cSYuval Mintz } 5620a7fb11cSYuval Mintz 5630a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5640a7fb11cSYuval Mintz return rc; 5650a7fb11cSYuval Mintz } 5660a7fb11cSYuval Mintz 5678c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5680a7fb11cSYuval Mintz { 5690a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5700a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5710a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5726291c608SMichal Kalderon unsigned long flags = 0; 5730a7fb11cSYuval Mintz 5740a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5750a7fb11cSYuval Mintz if (!p_ll2_conn) 5760a7fb11cSYuval Mintz return; 5770a7fb11cSYuval Mintz 5780a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5790a7fb11cSYuval Mintz 5806291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5810a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5820a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5830a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5840a7fb11cSYuval Mintz if (!p_pkt) 5850a7fb11cSYuval Mintz break; 586b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5876291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5880a7fb11cSYuval Mintz 589526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 5901d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 5911d6cff4fSYuval Mintz 5921d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 5931d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 5941d6cff4fSYuval Mintz p_buffer); 5951d6cff4fSYuval Mintz } else { 59654f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 59754f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 59854f19f07SMintz, Yuval bool b_last; 5990a7fb11cSYuval Mintz 6000a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 60154f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 60254f19f07SMintz, Yuval p_ll2_conn->my_id, 60354f19f07SMintz, Yuval cookie, 60454f19f07SMintz, Yuval rx_buf_addr, b_last); 6050a7fb11cSYuval Mintz } 6066291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 6070a7fb11cSYuval Mintz } 6086291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 6091d6cff4fSYuval Mintz } 6101d6cff4fSYuval Mintz 611974f6c04SMichal Kalderon static bool 612974f6c04SMichal Kalderon qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn, 613974f6c04SMichal Kalderon struct core_rx_slow_path_cqe *p_cqe) 614974f6c04SMichal Kalderon { 615974f6c04SMichal Kalderon struct ooo_opaque *iscsi_ooo; 616974f6c04SMichal Kalderon u32 cid; 617974f6c04SMichal Kalderon 618974f6c04SMichal Kalderon if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) 619974f6c04SMichal Kalderon return false; 620974f6c04SMichal Kalderon 621974f6c04SMichal Kalderon iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data; 622974f6c04SMichal Kalderon if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES) 623974f6c04SMichal Kalderon return false; 624974f6c04SMichal Kalderon 625974f6c04SMichal Kalderon /* Need to make a flush */ 626974f6c04SMichal Kalderon cid = le32_to_cpu(iscsi_ooo->cid); 627974f6c04SMichal Kalderon qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid); 628974f6c04SMichal Kalderon 629974f6c04SMichal Kalderon return true; 630974f6c04SMichal Kalderon } 631974f6c04SMichal Kalderon 6321d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6331d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6341d6cff4fSYuval Mintz { 6351d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6361d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6371d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6381d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6391d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6401d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6411d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6421d6cff4fSYuval Mintz struct ooo_opaque *iscsi_ooo; 6431d6cff4fSYuval Mintz u8 placement_offset = 0; 6441d6cff4fSYuval Mintz u8 cqe_type; 6451d6cff4fSYuval Mintz 6461d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6471d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6481d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6491d6cff4fSYuval Mintz return 0; 6501d6cff4fSYuval Mintz 6511d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6521d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6531d6cff4fSYuval Mintz 6541d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6551d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6561d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6571d6cff4fSYuval Mintz 658974f6c04SMichal Kalderon if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH) 659974f6c04SMichal Kalderon if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn, 660974f6c04SMichal Kalderon &cqe->rx_cqe_sp)) 661974f6c04SMichal Kalderon continue; 662974f6c04SMichal Kalderon 6631d6cff4fSYuval Mintz if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { 6641d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6651d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6661d6cff4fSYuval Mintz cqe_type); 6671d6cff4fSYuval Mintz return -EINVAL; 6681d6cff4fSYuval Mintz } 6691d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6701d6cff4fSYuval Mintz 6711d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6721d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6731d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6741d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 6751d6cff4fSYuval Mintz iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 6761d6cff4fSYuval Mintz qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, 6771d6cff4fSYuval Mintz iscsi_ooo); 6781d6cff4fSYuval Mintz cid = le32_to_cpu(iscsi_ooo->cid); 6791d6cff4fSYuval Mintz 6801d6cff4fSYuval Mintz /* Process delete isle first */ 6811d6cff4fSYuval Mintz if (iscsi_ooo->drop_size) 6821d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 6831d6cff4fSYuval Mintz iscsi_ooo->drop_isle, 6841d6cff4fSYuval Mintz iscsi_ooo->drop_size); 6851d6cff4fSYuval Mintz 6861d6cff4fSYuval Mintz if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) 6871d6cff4fSYuval Mintz continue; 6881d6cff4fSYuval Mintz 6891d6cff4fSYuval Mintz /* Now process create/add/join isles */ 6901d6cff4fSYuval Mintz if (list_empty(&p_rx->active_descq)) { 6911d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6921d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 6931d6cff4fSYuval Mintz ); 6941d6cff4fSYuval Mintz return -EIO; 6951d6cff4fSYuval Mintz } 6961d6cff4fSYuval Mintz 6971d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 6981d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 6991d6cff4fSYuval Mintz 7001d6cff4fSYuval Mintz if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || 7011d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || 7021d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || 7031d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || 7041d6cff4fSYuval Mintz (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { 7051d6cff4fSYuval Mintz if (!p_pkt) { 7061d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7071d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 7081d6cff4fSYuval Mintz return -EIO; 7091d6cff4fSYuval Mintz } 7101d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 7111d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 7121d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 7131d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 7141d6cff4fSYuval Mintz p_buffer->vlan = vlan; 7151d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 7161d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 7171d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 7181d6cff4fSYuval Mintz 7191d6cff4fSYuval Mintz switch (iscsi_ooo->ooo_opcode) { 7201d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 7211d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 7221d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7231d6cff4fSYuval Mintz cid, 7241d6cff4fSYuval Mintz iscsi_ooo->ooo_isle, 7251d6cff4fSYuval Mintz p_buffer); 7261d6cff4fSYuval Mintz break; 7271d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 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_RIGHT_BUF); 7341d6cff4fSYuval Mintz break; 7351d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 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 p_buffer, 7411d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7421d6cff4fSYuval Mintz break; 7431d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7441d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7451d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7461d6cff4fSYuval Mintz cid, 7471d6cff4fSYuval Mintz iscsi_ooo->ooo_isle + 7481d6cff4fSYuval Mintz 1, 7491d6cff4fSYuval Mintz p_buffer, 7501d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7511d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7521d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7531d6cff4fSYuval Mintz cid, iscsi_ooo->ooo_isle); 7541d6cff4fSYuval Mintz break; 7551d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7561d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7571d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7581d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7591d6cff4fSYuval Mintz p_buffer, true); 7601d6cff4fSYuval Mintz break; 7611d6cff4fSYuval Mintz } 7621d6cff4fSYuval Mintz } else { 7631d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7641d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 7651d6cff4fSYuval Mintz iscsi_ooo->ooo_opcode); 7661d6cff4fSYuval Mintz } 7671d6cff4fSYuval Mintz } 7681d6cff4fSYuval Mintz 7691d6cff4fSYuval Mintz return 0; 7701d6cff4fSYuval Mintz } 7711d6cff4fSYuval Mintz 7721d6cff4fSYuval Mintz static void 7731d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7741d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7751d6cff4fSYuval Mintz { 7767c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7771d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7781d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7791d6cff4fSYuval Mintz dma_addr_t first_frag; 7801d6cff4fSYuval Mintz u8 bd_flags; 7817c7973b2SMintz, Yuval int rc; 7821d6cff4fSYuval Mintz 7831d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7841d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7851d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7861d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7871d6cff4fSYuval Mintz bd_flags = 0; 7881d6cff4fSYuval Mintz 7891d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7901d6cff4fSYuval Mintz p_buffer->placement_offset; 791be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 792be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 7931d6cff4fSYuval Mintz 7947c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 7957c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 7967c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 7977c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 7987c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 7998fa74e3cSNathan Chancellor switch (p_ll2_conn->tx_dest) { 8008fa74e3cSNathan Chancellor case CORE_TX_DEST_NW: 8018fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_NW; 8028fa74e3cSNathan Chancellor break; 8038fa74e3cSNathan Chancellor case CORE_TX_DEST_LB: 8048fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 8058fa74e3cSNathan Chancellor break; 8068fa74e3cSNathan Chancellor case CORE_TX_DEST_DROP: 8078fa74e3cSNathan Chancellor default: 8088fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 8098fa74e3cSNathan Chancellor break; 8108fa74e3cSNathan Chancellor } 8117c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 8127c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 8137c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 8147c7973b2SMintz, Yuval 8157c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 8167c7973b2SMintz, Yuval &tx_pkt, true); 8171d6cff4fSYuval Mintz if (rc) { 8181d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 8191d6cff4fSYuval Mintz p_buffer, false); 8201d6cff4fSYuval Mintz break; 8211d6cff4fSYuval Mintz } 8221d6cff4fSYuval Mintz } 8231d6cff4fSYuval Mintz } 8241d6cff4fSYuval Mintz 8251d6cff4fSYuval Mintz static void 8261d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 8271d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 8281d6cff4fSYuval Mintz { 8291d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8301d6cff4fSYuval Mintz int rc; 8311d6cff4fSYuval Mintz 8321d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 8331d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 8341d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 8351d6cff4fSYuval Mintz p_ll2_conn->my_id, 8361d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 8371d6cff4fSYuval Mintz 0, p_buffer, true); 8381d6cff4fSYuval Mintz if (rc) { 8391d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8401d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8411d6cff4fSYuval Mintz break; 8421d6cff4fSYuval Mintz } 8431d6cff4fSYuval Mintz } 8441d6cff4fSYuval Mintz } 8451d6cff4fSYuval Mintz 8461d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8471d6cff4fSYuval Mintz { 8481d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8491d6cff4fSYuval Mintz int rc; 8501d6cff4fSYuval Mintz 851fc16f56bSMichal Kalderon if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 852fc16f56bSMichal Kalderon return 0; 853fc16f56bSMichal Kalderon 8541d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8551d6cff4fSYuval Mintz if (rc) 8561d6cff4fSYuval Mintz return rc; 8571d6cff4fSYuval Mintz 8581d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8591d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8601d6cff4fSYuval Mintz 8611d6cff4fSYuval Mintz return 0; 8621d6cff4fSYuval Mintz } 8631d6cff4fSYuval Mintz 8641d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8651d6cff4fSYuval Mintz { 8661d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8671d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8681d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8691d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8701d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8711d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8721d6cff4fSYuval Mintz int rc; 8731d6cff4fSYuval Mintz 874fc16f56bSMichal Kalderon if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 875fc16f56bSMichal Kalderon return 0; 876fc16f56bSMichal Kalderon 8771d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8781d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8791d6cff4fSYuval Mintz 8801d6cff4fSYuval Mintz if (!num_bds) 8811d6cff4fSYuval Mintz return 0; 8821d6cff4fSYuval Mintz 8831d6cff4fSYuval Mintz while (num_bds) { 8841d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 8851d6cff4fSYuval Mintz return -EINVAL; 8861d6cff4fSYuval Mintz 8871d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 8881d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 8891d6cff4fSYuval Mintz if (!p_pkt) 8901d6cff4fSYuval Mintz return -EINVAL; 8911d6cff4fSYuval Mintz 8921d6cff4fSYuval Mintz if (p_pkt->bd_used != 1) { 8931d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 8941d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 8951d6cff4fSYuval Mintz p_pkt->bd_used); 8961d6cff4fSYuval Mintz return -EINVAL; 8971d6cff4fSYuval Mintz } 8981d6cff4fSYuval Mintz 8991d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 9001d6cff4fSYuval Mintz 9011d6cff4fSYuval Mintz num_bds--; 9021d6cff4fSYuval Mintz p_tx->bds_idx++; 9031d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 9041d6cff4fSYuval Mintz 9051d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 9061d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 9071d6cff4fSYuval Mintz 9081d6cff4fSYuval Mintz if (b_dont_submit_rx) { 9091d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 9101d6cff4fSYuval Mintz p_buffer); 9111d6cff4fSYuval Mintz continue; 9121d6cff4fSYuval Mintz } 9131d6cff4fSYuval Mintz 9141d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 9151d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 9161d6cff4fSYuval Mintz p_buffer, true); 9171d6cff4fSYuval Mintz if (rc != 0) { 9181d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 9191d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 9201d6cff4fSYuval Mintz b_dont_submit_rx = true; 9211d6cff4fSYuval Mintz } 9221d6cff4fSYuval Mintz } 9231d6cff4fSYuval Mintz 9241d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 9251d6cff4fSYuval Mintz 9261d6cff4fSYuval Mintz return 0; 9271d6cff4fSYuval Mintz } 9281d6cff4fSYuval Mintz 9291d6cff4fSYuval Mintz static void qed_ll2_stop_ooo(struct qed_dev *cdev) 9301d6cff4fSYuval Mintz { 9311d6cff4fSYuval Mintz struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 9321d6cff4fSYuval Mintz u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9331d6cff4fSYuval Mintz 9341d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n", 9351d6cff4fSYuval Mintz *handle); 9361d6cff4fSYuval Mintz 9371d6cff4fSYuval Mintz qed_ll2_terminate_connection(hwfn, *handle); 9381d6cff4fSYuval Mintz qed_ll2_release_connection(hwfn, *handle); 9391d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9401d6cff4fSYuval Mintz } 9411d6cff4fSYuval Mintz 9420a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 9430a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 9440a7fb11cSYuval Mintz u8 action_on_error) 9450a7fb11cSYuval Mintz { 94613c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9470a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 9480a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 9490a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9500a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9510a7fb11cSYuval Mintz u16 cqe_pbl_size; 9520a7fb11cSYuval Mintz int rc = 0; 9530a7fb11cSYuval Mintz 9540a7fb11cSYuval Mintz /* Get SPQ entry */ 9550a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9560a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9570a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9580a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9590a7fb11cSYuval Mintz 9600a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9610a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 9620a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9630a7fb11cSYuval Mintz if (rc) 9640a7fb11cSYuval Mintz return rc; 9650a7fb11cSYuval Mintz 9660a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 9670a7fb11cSYuval Mintz 9680a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9690a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 9700a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 9710a7fb11cSYuval Mintz 97213c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 97313c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 9740a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 9750a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 9760a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 9770a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 9780a7fb11cSYuval Mintz 97913c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 980da090917STomer Tayar p_ramrod->inner_vlan_stripping_en = 981da090917STomer Tayar p_ll2_conn->input.rx_vlan_removal_en; 982cac6f691SSudarsana Reddy Kalluru 983cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 984cac6f691SSudarsana Reddy Kalluru p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) 985cac6f691SSudarsana Reddy Kalluru p_ramrod->report_outer_vlan = 1; 9860a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 987ed468ebeSMichal Kalderon p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; 9880a7fb11cSYuval Mintz 9890bc5fe85SSudarsana Reddy Kalluru if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) && 9900bc5fe85SSudarsana Reddy Kalluru p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE && 9910bc5fe85SSudarsana Reddy Kalluru conn_type != QED_LL2_TYPE_IWARP) { 9920a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 9930a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 9940a7fb11cSYuval Mintz } else { 9950a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 9960a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 9970a7fb11cSYuval Mintz } 9980a7fb11cSYuval Mintz 9990a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 100013c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 10010a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10020a7fb11cSYuval Mintz } 10030a7fb11cSYuval Mintz 10040a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 10050a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10060a7fb11cSYuval Mintz { 100713c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 10080a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 10090a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 10100a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10110a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10120a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 10130a7fb11cSYuval Mintz int rc = -EINVAL; 10140a7fb11cSYuval Mintz 10150a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 10160a7fb11cSYuval Mintz return 0; 10170a7fb11cSYuval Mintz 1018526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 10191d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 10201d6cff4fSYuval Mintz else 10211d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 10221d6cff4fSYuval Mintz 10230a7fb11cSYuval Mintz /* Get SPQ entry */ 10240a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10250a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10260a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10270a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10280a7fb11cSYuval Mintz 10290a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10300a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 10310a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10320a7fb11cSYuval Mintz if (rc) 10330a7fb11cSYuval Mintz return rc; 10340a7fb11cSYuval Mintz 10350a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 10360a7fb11cSYuval Mintz 10370a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10380a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 103913c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 10400a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 10410a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 10420a7fb11cSYuval Mintz 10430a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 10440a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 10450a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 10460a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 10470a7fb11cSYuval Mintz 104813c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 1049526d1d05SKalderon, Michal case PURE_LB_TC: 1050b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 1051b5a9ee7cSAriel Elior break; 1052526d1d05SKalderon, Michal case PKT_LB_TC: 1053b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 1054827d240aSColin Ian King break; 1055b5a9ee7cSAriel Elior default: 1056b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 1057b5a9ee7cSAriel Elior break; 1058b5a9ee7cSAriel Elior } 1059b5a9ee7cSAriel Elior 10600a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 10610a7fb11cSYuval Mintz 10620a7fb11cSYuval Mintz switch (conn_type) { 10631e128c81SArun Easi case QED_LL2_TYPE_FCOE: 10641e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 10651e128c81SArun Easi break; 10660a7fb11cSYuval Mintz case QED_LL2_TYPE_ISCSI: 10670a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ISCSI; 10680a7fb11cSYuval Mintz break; 10690a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 10700a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 10710a7fb11cSYuval Mintz break; 1072cc4ad324SKalderon, Michal case QED_LL2_TYPE_IWARP: 1073cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1074cc4ad324SKalderon, Michal break; 1075cc4ad324SKalderon, Michal case QED_LL2_TYPE_OOO: 1076cc4ad324SKalderon, Michal if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) 1077cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_ISCSI; 1078cc4ad324SKalderon, Michal else 1079cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1080cc4ad324SKalderon, Michal break; 10810a7fb11cSYuval Mintz default: 10820a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 10830a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 10840a7fb11cSYuval Mintz } 10850a7fb11cSYuval Mintz 108613c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 108713c54771SMintz, Yuval 10880a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10890a7fb11cSYuval Mintz } 10900a7fb11cSYuval Mintz 10910a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 10920a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10930a7fb11cSYuval Mintz { 10940a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 10950a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10960a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10970a7fb11cSYuval Mintz int rc = -EINVAL; 10980a7fb11cSYuval Mintz 10990a7fb11cSYuval Mintz /* Get SPQ entry */ 11000a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11010a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11020a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11030a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11040a7fb11cSYuval Mintz 11050a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11060a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 11070a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11080a7fb11cSYuval Mintz if (rc) 11090a7fb11cSYuval Mintz return rc; 11100a7fb11cSYuval Mintz 11110a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 11120a7fb11cSYuval Mintz 11130a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 11140a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 11150a7fb11cSYuval Mintz 11160a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11170a7fb11cSYuval Mintz } 11180a7fb11cSYuval Mintz 11190a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11200a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11210a7fb11cSYuval Mintz { 11220a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11230a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11240a7fb11cSYuval Mintz int rc = -EINVAL; 11250a7fb11cSYuval Mintz 11260a7fb11cSYuval Mintz /* Get SPQ entry */ 11270a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11280a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11290a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11300a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11310a7fb11cSYuval Mintz 11320a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11330a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11340a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11350a7fb11cSYuval Mintz if (rc) 11360a7fb11cSYuval Mintz return rc; 11370a7fb11cSYuval Mintz 11380a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11390a7fb11cSYuval Mintz } 11400a7fb11cSYuval Mintz 11410a7fb11cSYuval Mintz static int 11420a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 114313c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11440a7fb11cSYuval Mintz { 11450a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 11460a7fb11cSYuval Mintz u32 capacity; 11470a7fb11cSYuval Mintz int rc = 0; 11480a7fb11cSYuval Mintz 114913c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 11500a7fb11cSYuval Mintz goto out; 11510a7fb11cSYuval Mintz 11520a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11530a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11540a7fb11cSYuval Mintz QED_CHAIN_MODE_NEXT_PTR, 11550a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 115613c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 11570a7fb11cSYuval Mintz sizeof(struct core_rx_bd), 11581a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rxq_chain, NULL); 11590a7fb11cSYuval Mintz if (rc) { 11600a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 11610a7fb11cSYuval Mintz goto out; 11620a7fb11cSYuval Mintz } 11630a7fb11cSYuval Mintz 11640a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 11650a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 11660a7fb11cSYuval Mintz GFP_KERNEL); 11670a7fb11cSYuval Mintz if (!p_descq) { 11680a7fb11cSYuval Mintz rc = -ENOMEM; 11690a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 11700a7fb11cSYuval Mintz goto out; 11710a7fb11cSYuval Mintz } 11720a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 11730a7fb11cSYuval Mintz 11740a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 11750a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 11760a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 11770a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 117813c54771SMintz, Yuval p_ll2_info->input.rx_num_desc, 11790a7fb11cSYuval Mintz sizeof(struct core_rx_fast_path_cqe), 11801a4a6975SMintz, Yuval &p_ll2_info->rx_queue.rcq_chain, NULL); 11810a7fb11cSYuval Mintz if (rc) { 11820a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 11830a7fb11cSYuval Mintz goto out; 11840a7fb11cSYuval Mintz } 11850a7fb11cSYuval Mintz 11860a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 11870a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 118813c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 11890a7fb11cSYuval Mintz 11900a7fb11cSYuval Mintz out: 11910a7fb11cSYuval Mintz return rc; 11920a7fb11cSYuval Mintz } 11930a7fb11cSYuval Mintz 11940a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 119513c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11960a7fb11cSYuval Mintz { 11970a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 1198f5823fe6SMichal Kalderon u32 desc_size; 11990a7fb11cSYuval Mintz u32 capacity; 12000a7fb11cSYuval Mintz int rc = 0; 12010a7fb11cSYuval Mintz 120213c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 12030a7fb11cSYuval Mintz goto out; 12040a7fb11cSYuval Mintz 12050a7fb11cSYuval Mintz rc = qed_chain_alloc(p_hwfn->cdev, 12060a7fb11cSYuval Mintz QED_CHAIN_USE_TO_CONSUME_PRODUCE, 12070a7fb11cSYuval Mintz QED_CHAIN_MODE_PBL, 12080a7fb11cSYuval Mintz QED_CHAIN_CNT_TYPE_U16, 120913c54771SMintz, Yuval p_ll2_info->input.tx_num_desc, 12100a7fb11cSYuval Mintz sizeof(struct core_tx_bd), 12111a4a6975SMintz, Yuval &p_ll2_info->tx_queue.txq_chain, NULL); 12120a7fb11cSYuval Mintz if (rc) 12130a7fb11cSYuval Mintz goto out; 12140a7fb11cSYuval Mintz 12150a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 1216f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1217f5823fe6SMichal Kalderon desc_size = (sizeof(*p_descq) + 1218f5823fe6SMichal Kalderon (p_ll2_info->input.tx_max_bds_per_packet - 1) * 1219f5823fe6SMichal Kalderon sizeof(p_descq->bds_set)); 1220f5823fe6SMichal Kalderon 1221f5823fe6SMichal Kalderon p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); 12220a7fb11cSYuval Mintz if (!p_descq) { 12230a7fb11cSYuval Mintz rc = -ENOMEM; 12240a7fb11cSYuval Mintz goto out; 12250a7fb11cSYuval Mintz } 1226f5823fe6SMichal Kalderon p_ll2_info->tx_queue.descq_mem = p_descq; 12270a7fb11cSYuval Mintz 12280a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12290a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 123013c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 12310a7fb11cSYuval Mintz 12320a7fb11cSYuval Mintz out: 12330a7fb11cSYuval Mintz if (rc) 12340a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12350a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 123613c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 12370a7fb11cSYuval Mintz return rc; 12380a7fb11cSYuval Mintz } 12390a7fb11cSYuval Mintz 124013c54771SMintz, Yuval static int 124113c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 124213c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 124313c54771SMintz, Yuval { 124413c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 124513c54771SMintz, Yuval void *p_virt; 124613c54771SMintz, Yuval u16 buf_idx; 124713c54771SMintz, Yuval int rc = 0; 124813c54771SMintz, Yuval 1249526d1d05SKalderon, Michal if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO) 125013c54771SMintz, Yuval return rc; 125113c54771SMintz, Yuval 125213c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 125313c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 125413c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 125513c54771SMintz, Yuval 125613c54771SMintz, Yuval if (!num_desc) 125713c54771SMintz, Yuval return -EINVAL; 125813c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 125913c54771SMintz, Yuval } 126013c54771SMintz, Yuval 126113c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 126213c54771SMintz, Yuval buf_idx++) { 126313c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 126413c54771SMintz, Yuval if (!p_buf) { 126513c54771SMintz, Yuval rc = -ENOMEM; 126613c54771SMintz, Yuval goto out; 126713c54771SMintz, Yuval } 126813c54771SMintz, Yuval 126913c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 127013c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 127113c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 127213c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 127313c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 127413c54771SMintz, Yuval p_buf->rx_buffer_size, 127513c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 127613c54771SMintz, Yuval GFP_KERNEL); 127713c54771SMintz, Yuval if (!p_virt) { 127813c54771SMintz, Yuval kfree(p_buf); 127913c54771SMintz, Yuval rc = -ENOMEM; 128013c54771SMintz, Yuval goto out; 128113c54771SMintz, Yuval } 128213c54771SMintz, Yuval 128313c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 128413c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 128513c54771SMintz, Yuval } 128613c54771SMintz, Yuval 128713c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 128813c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 128913c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 129013c54771SMintz, Yuval 129113c54771SMintz, Yuval out: 129213c54771SMintz, Yuval return rc; 129313c54771SMintz, Yuval } 129413c54771SMintz, Yuval 12950518c12fSMichal Kalderon static int 12960518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 12970518c12fSMichal Kalderon { 12980518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 12990518c12fSMichal Kalderon !cbs->rx_release_cb || 13000518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 13010518c12fSMichal Kalderon return -EINVAL; 13020518c12fSMichal Kalderon 13030518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 13040518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 13050518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 13060518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 13076f34a284SMichal Kalderon p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; 13080518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 13090518c12fSMichal Kalderon 13100518c12fSMichal Kalderon return 0; 13110518c12fSMichal Kalderon } 13120518c12fSMichal Kalderon 131313c54771SMintz, Yuval static enum core_error_handle 131413c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 131513c54771SMintz, Yuval { 131613c54771SMintz, Yuval switch (err) { 131713c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 131813c54771SMintz, Yuval return LL2_DROP_PACKET; 131913c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 132013c54771SMintz, Yuval return LL2_DO_NOTHING; 132113c54771SMintz, Yuval case QED_LL2_ASSERT: 132213c54771SMintz, Yuval return LL2_ASSERT; 132313c54771SMintz, Yuval default: 132413c54771SMintz, Yuval return LL2_DO_NOTHING; 132513c54771SMintz, Yuval } 132613c54771SMintz, Yuval } 132713c54771SMintz, Yuval 13280518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 13290a7fb11cSYuval Mintz { 13300518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13310a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13320a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 133313c54771SMintz, Yuval u8 i, *p_tx_max; 13340a7fb11cSYuval Mintz int rc; 13350a7fb11cSYuval Mintz 133613c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 13370a7fb11cSYuval Mintz return -EINVAL; 13380a7fb11cSYuval Mintz 13390a7fb11cSYuval Mintz /* Find a free connection to be used */ 13400a7fb11cSYuval Mintz for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { 13410a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13420a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13430a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13440a7fb11cSYuval Mintz continue; 13450a7fb11cSYuval Mintz } 13460a7fb11cSYuval Mintz 13470a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13480a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13490a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13500a7fb11cSYuval Mintz break; 13510a7fb11cSYuval Mintz } 13520a7fb11cSYuval Mintz if (!p_ll2_info) 13530a7fb11cSYuval Mintz return -EBUSY; 13540a7fb11cSYuval Mintz 135513c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 13560a7fb11cSYuval Mintz 1357da090917STomer Tayar switch (data->input.tx_dest) { 1358da090917STomer Tayar case QED_LL2_TX_DEST_NW: 1359da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_NW; 1360da090917STomer Tayar break; 1361da090917STomer Tayar case QED_LL2_TX_DEST_LB: 1362da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_LB; 1363da090917STomer Tayar break; 1364da090917STomer Tayar case QED_LL2_TX_DEST_DROP: 1365da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_DROP; 1366da090917STomer Tayar break; 1367da090917STomer Tayar default: 1368da090917STomer Tayar return -EINVAL; 1369da090917STomer Tayar } 1370da090917STomer Tayar 1371ed468ebeSMichal Kalderon if (data->input.conn_type == QED_LL2_TYPE_OOO || 1372ed468ebeSMichal Kalderon data->input.secondary_queue) 1373ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = false; 1374ed468ebeSMichal Kalderon else 1375ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = true; 137613c54771SMintz, Yuval 137713c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 137813c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 137913c54771SMintz, Yuval if (*p_tx_max == 0) 138013c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 138113c54771SMintz, Yuval else 138213c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 138313c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 13840518c12fSMichal Kalderon 13850518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 13860518c12fSMichal Kalderon if (rc) { 13870518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 13880518c12fSMichal Kalderon goto q_allocate_fail; 13890518c12fSMichal Kalderon } 13900518c12fSMichal Kalderon 139113c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 13920a7fb11cSYuval Mintz if (rc) 13930a7fb11cSYuval Mintz goto q_allocate_fail; 13940a7fb11cSYuval Mintz 139513c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 13960a7fb11cSYuval Mintz if (rc) 13970a7fb11cSYuval Mintz goto q_allocate_fail; 13980a7fb11cSYuval Mintz 13991d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 140013c54771SMintz, Yuval data->input.mtu); 14011d6cff4fSYuval Mintz if (rc) 14021d6cff4fSYuval Mintz goto q_allocate_fail; 14031d6cff4fSYuval Mintz 14040a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 1405526d1d05SKalderon, Michal if (data->input.conn_type == QED_LL2_TYPE_OOO) { 14061d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 14071d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 14081d6cff4fSYuval Mintz } else { 14090a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 14100a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 14111d6cff4fSYuval Mintz } 14120a7fb11cSYuval Mintz 141313c54771SMintz, Yuval if (data->input.rx_num_desc) { 14140a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 14150a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14160a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 14170a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 14186a42b512SColin Ian King p_ll2_info->rx_queue.b_cb_registered = true; 14190a7fb11cSYuval Mintz } 14200a7fb11cSYuval Mintz 142113c54771SMintz, Yuval if (data->input.tx_num_desc) { 14220a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 14230a7fb11cSYuval Mintz comp_tx_cb, 14240a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14250a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 14260a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 14276a42b512SColin Ian King p_ll2_info->tx_queue.b_cb_registered = true; 14280a7fb11cSYuval Mintz } 14290a7fb11cSYuval Mintz 143013c54771SMintz, Yuval *data->p_connection_handle = i; 14310a7fb11cSYuval Mintz return rc; 14320a7fb11cSYuval Mintz 14330a7fb11cSYuval Mintz q_allocate_fail: 14340a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 14350a7fb11cSYuval Mintz return -ENOMEM; 14360a7fb11cSYuval Mintz } 14370a7fb11cSYuval Mintz 14380a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 14390a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 14400a7fb11cSYuval Mintz { 144113c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 144213c54771SMintz, Yuval enum core_error_handle error_mode; 14430a7fb11cSYuval Mintz u8 action_on_error = 0; 14440a7fb11cSYuval Mintz 14450a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 14460a7fb11cSYuval Mintz return 0; 14470a7fb11cSYuval Mintz 14480a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 144913c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 145013c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 14510a7fb11cSYuval Mintz SET_FIELD(action_on_error, 145213c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 145313c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 145413c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 145513c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 14560a7fb11cSYuval Mintz 14570a7fb11cSYuval Mintz return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 14580a7fb11cSYuval Mintz } 14590a7fb11cSYuval Mintz 146058de2898SMintz, Yuval static void 146158de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 146258de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 146358de2898SMintz, Yuval { 1464526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 146558de2898SMintz, Yuval return; 146658de2898SMintz, Yuval 146758de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 146858de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 146958de2898SMintz, Yuval } 14700518c12fSMichal Kalderon 14710518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 14720a7fb11cSYuval Mintz { 14730518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 14740a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 1475f5823fe6SMichal Kalderon struct qed_ll2_tx_packet *p_pkt; 14760a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 14770a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 147815582962SRahul Verma struct qed_ptt *p_ptt; 14790a7fb11cSYuval Mintz int rc = -EINVAL; 14800a7fb11cSYuval Mintz u32 i, capacity; 1481f5823fe6SMichal Kalderon u32 desc_size; 14820a7fb11cSYuval Mintz u8 qid; 14830a7fb11cSYuval Mintz 148415582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 148515582962SRahul Verma if (!p_ptt) 148615582962SRahul Verma return -EAGAIN; 148715582962SRahul Verma 14880a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 148915582962SRahul Verma if (!p_ll2_conn) { 149015582962SRahul Verma rc = -EINVAL; 149115582962SRahul Verma goto out; 149215582962SRahul Verma } 149315582962SRahul Verma 14940a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 14950a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 14960a7fb11cSYuval Mintz 14970a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 14980a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 14990a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 15000a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 15010a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 15020a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 15030a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 15040a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 15050a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 15060a7fb11cSYuval Mintz &p_rx->free_descq); 15070a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 15080a7fb11cSYuval Mintz 15090a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 15100a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 15110a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 15120a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 15130a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 15140a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 1515f5823fe6SMichal Kalderon /* First element is part of the packet, rest are flexibly added */ 1516f5823fe6SMichal Kalderon desc_size = (sizeof(*p_pkt) + 1517f5823fe6SMichal Kalderon (p_ll2_conn->input.tx_max_bds_per_packet - 1) * 1518f5823fe6SMichal Kalderon sizeof(p_pkt->bds_set)); 1519f5823fe6SMichal Kalderon 1520f5823fe6SMichal Kalderon for (i = 0; i < capacity; i++) { 1521f5823fe6SMichal Kalderon p_pkt = p_tx->descq_mem + desc_size * i; 1522f5823fe6SMichal Kalderon list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 1523f5823fe6SMichal Kalderon } 15240a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 15250a7fb11cSYuval Mintz p_tx->bds_idx = 0; 15260a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 15270a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 15280a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 15290a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 15300a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 15310a7fb11cSYuval Mintz 153215582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 153315582962SRahul Verma if (rc) 153415582962SRahul Verma goto out; 15350a7fb11cSYuval Mintz 15360a7fb11cSYuval Mintz qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; 15370a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 15380a7fb11cSYuval Mintz p_ll2_conn->tx_stats_id = qid; 15390a7fb11cSYuval Mintz p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + 15400a7fb11cSYuval Mintz GTT_BAR0_MAP_REG_TSDM_RAM + 15410a7fb11cSYuval Mintz TSTORM_LL2_RX_PRODS_OFFSET(qid); 15420a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 15430a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 15440a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 15450a7fb11cSYuval Mintz 15460a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 15470a7fb11cSYuval Mintz if (rc) 154815582962SRahul Verma goto out; 15490a7fb11cSYuval Mintz 15500a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 15510a7fb11cSYuval Mintz if (rc) 155215582962SRahul Verma goto out; 15530a7fb11cSYuval Mintz 1554c851a9dcSKalderon, Michal if (!QED_IS_RDMA_PERSONALITY(p_hwfn)) 155515582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 15560a7fb11cSYuval Mintz 15571d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 15581d6cff4fSYuval Mintz 155913c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1560cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 156115582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 1562cac6f691SSudarsana Reddy Kalluru ETH_P_FCOE, 0, 15631e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 156415582962SRahul Verma qed_llh_add_protocol_filter(p_hwfn, p_ptt, 1565cac6f691SSudarsana Reddy Kalluru ETH_P_FIP, 0, 15661e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 15671e128c81SArun Easi } 15681e128c81SArun Easi 156915582962SRahul Verma out: 157015582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 15710a7fb11cSYuval Mintz return rc; 15720a7fb11cSYuval Mintz } 15730a7fb11cSYuval Mintz 15740a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 15750a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 15760a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 15770a7fb11cSYuval Mintz { 15780a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 15790a7fb11cSYuval Mintz struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; 15800a7fb11cSYuval Mintz bool b_notify_fw = false; 15810a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 15820a7fb11cSYuval Mintz 15830a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 15840a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 15850a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 15860a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 15870a7fb11cSYuval Mintz list_entry); 1588b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 15890a7fb11cSYuval Mintz &p_rx->active_descq); 15900a7fb11cSYuval Mintz b_notify_fw = true; 15910a7fb11cSYuval Mintz } 15920a7fb11cSYuval Mintz 15930a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 15940a7fb11cSYuval Mintz if (p_curp) { 15950a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 15960a7fb11cSYuval Mintz b_notify_fw = true; 15970a7fb11cSYuval Mintz } 15980a7fb11cSYuval Mintz 15990a7fb11cSYuval Mintz if (!b_notify_fw) 16000a7fb11cSYuval Mintz return; 16010a7fb11cSYuval Mintz 16020a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 16030a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 16040a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 16050a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 16060a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 16070a7fb11cSYuval Mintz } 16080a7fb11cSYuval Mintz 16090518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 16100a7fb11cSYuval Mintz u8 connection_handle, 16110a7fb11cSYuval Mintz dma_addr_t addr, 16120a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 16130a7fb11cSYuval Mintz { 16140518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 16150a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 16160a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 16170a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 16180a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 16190a7fb11cSYuval Mintz unsigned long flags; 16200a7fb11cSYuval Mintz void *p_data; 16210a7fb11cSYuval Mintz int rc = 0; 16220a7fb11cSYuval Mintz 16230a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 16240a7fb11cSYuval Mintz if (!p_ll2_conn) 16250a7fb11cSYuval Mintz return -EINVAL; 16260a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 16270a7fb11cSYuval Mintz 16280a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 16290a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 16300a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 16310a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 16320a7fb11cSYuval Mintz if (p_curp) { 16330a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 16340a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 16350a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 16360a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 16370a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 16380a7fb11cSYuval Mintz } 16390a7fb11cSYuval Mintz } 16400a7fb11cSYuval Mintz 16410a7fb11cSYuval Mintz /* If we're lacking entires, let's try to flush buffers to FW */ 16420a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 16430a7fb11cSYuval Mintz rc = -EBUSY; 16440a7fb11cSYuval Mintz p_curp = NULL; 16450a7fb11cSYuval Mintz goto out_notify; 16460a7fb11cSYuval Mintz } 16470a7fb11cSYuval Mintz 16480a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 16490a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 16500a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 16510a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 16520a7fb11cSYuval Mintz p_curp->cookie = cookie; 16530a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 16540a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 16550a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 16560a7fb11cSYuval Mintz 16570a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 16580a7fb11cSYuval Mintz if (!notify_fw) { 16590a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 16600a7fb11cSYuval Mintz goto out; 16610a7fb11cSYuval Mintz } 16620a7fb11cSYuval Mintz 16630a7fb11cSYuval Mintz out_notify: 16640a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 16650a7fb11cSYuval Mintz out: 16660a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 16670a7fb11cSYuval Mintz return rc; 16680a7fb11cSYuval Mintz } 16690a7fb11cSYuval Mintz 16700a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 16710a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 16720a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 16737c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 16740a7fb11cSYuval Mintz u8 notify_fw) 16750a7fb11cSYuval Mintz { 16760a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 16777c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 16787c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 16790a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 16800a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 16810a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 16820a7fb11cSYuval Mintz 16837c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 16847c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 16850a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 16860a7fb11cSYuval Mintz } 16870a7fb11cSYuval Mintz 1688be086e7cSMintz, Yuval static void 1689be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 16900a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 16910a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 16927c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 16930a7fb11cSYuval Mintz { 16940a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 16950a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 16960a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 16977c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 16987c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1699be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 17000a7fb11cSYuval Mintz 17017c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 17027c7973b2SMintz, Yuval : CORE_RROCE; 17037c7973b2SMintz, Yuval 170477caa792SMichal Kalderon switch (pkt->tx_dest) { 170577caa792SMichal Kalderon case QED_LL2_TX_DEST_NW: 170677caa792SMichal Kalderon tx_dest = CORE_TX_DEST_NW; 170777caa792SMichal Kalderon break; 170877caa792SMichal Kalderon case QED_LL2_TX_DEST_LB: 170977caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 171077caa792SMichal Kalderon break; 171177caa792SMichal Kalderon case QED_LL2_TX_DEST_DROP: 171277caa792SMichal Kalderon tx_dest = CORE_TX_DEST_DROP; 171377caa792SMichal Kalderon break; 171477caa792SMichal Kalderon default: 171577caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 171677caa792SMichal Kalderon break; 171777caa792SMichal Kalderon } 17187c7973b2SMintz, Yuval 17190a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 172089d65113SMichal Kalderon if (QED_IS_IWARP_PERSONALITY(p_hwfn) && 1721cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_OOO) { 172289d65113SMichal Kalderon start_bd->nw_vlan_or_lb_echo = 172389d65113SMichal Kalderon cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); 1724cac6f691SSudarsana Reddy Kalluru } else { 17257c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 1726cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 1727cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_FCOE) 1728cac6f691SSudarsana Reddy Kalluru pkt->remove_stag = true; 1729cac6f691SSudarsana Reddy Kalluru } 1730cac6f691SSudarsana Reddy Kalluru 17310a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, 17327c7973b2SMintz, Yuval cpu_to_le16(pkt->l4_hdr_offset_w)); 17330a7fb11cSYuval Mintz SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); 17347c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1735be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 17367c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1737be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 17386df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); 17396df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); 17406df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); 1741cac6f691SSudarsana Reddy Kalluru SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION, 1742cac6f691SSudarsana Reddy Kalluru !!(pkt->remove_stag)); 1743cac6f691SSudarsana Reddy Kalluru 1744be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 17457c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 17467c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 17470a7fb11cSYuval Mintz 17480a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 17490a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 17500a7fb11cSYuval 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", 17510a7fb11cSYuval Mintz p_ll2->queue_id, 17520a7fb11cSYuval Mintz p_ll2->cid, 175313c54771SMintz, Yuval p_ll2->input.conn_type, 17540a7fb11cSYuval Mintz prod_idx, 17557c7973b2SMintz, Yuval pkt->first_frag_len, 17567c7973b2SMintz, Yuval pkt->num_of_bds, 17570a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 17580a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 17590a7fb11cSYuval Mintz 17607c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 17610a7fb11cSYuval Mintz return; 17620a7fb11cSYuval Mintz 17630a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 17640a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 17657c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 17660a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 17670a7fb11cSYuval Mintz 17680a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1769be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 17700a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 17710a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 17720a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 17730a7fb11cSYuval Mintz } 17740a7fb11cSYuval Mintz } 17750a7fb11cSYuval Mintz 17760a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 17770a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 17780a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 17790a7fb11cSYuval Mintz { 17800a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 17810a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 17820a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 17830a7fb11cSYuval Mintz struct core_db_data db_msg = { 0, 0, 0 }; 17840a7fb11cSYuval Mintz u16 bd_prod; 17850a7fb11cSYuval Mintz 17860a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 17870a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 17880a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 17890a7fb11cSYuval Mintz return; 17900a7fb11cSYuval Mintz 17910a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 17920a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 17930a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 17940a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 17950a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 17960a7fb11cSYuval Mintz 17970a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 17980a7fb11cSYuval Mintz if (!b_notify) 17990a7fb11cSYuval Mintz return; 18000a7fb11cSYuval Mintz 18010a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 18020a7fb11cSYuval Mintz 18030a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 18040a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 18050a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 18060a7fb11cSYuval Mintz if (!p_pkt) 18070a7fb11cSYuval Mintz break; 18080a7fb11cSYuval Mintz 1809b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 18100a7fb11cSYuval Mintz } 18110a7fb11cSYuval Mintz 18120a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 18130a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 18140a7fb11cSYuval Mintz SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 18150a7fb11cSYuval Mintz DQ_XCM_CORE_TX_BD_PROD_CMD); 18160a7fb11cSYuval Mintz db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 18170a7fb11cSYuval Mintz db_msg.spq_prod = cpu_to_le16(bd_prod); 18180a7fb11cSYuval Mintz 18190a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 18200a7fb11cSYuval Mintz wmb(); 18210a7fb11cSYuval Mintz 18220a7fb11cSYuval Mintz DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); 18230a7fb11cSYuval Mintz 18240a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 18250a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 18260a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 18270a7fb11cSYuval Mintz p_ll2_conn->queue_id, 182813c54771SMintz, Yuval p_ll2_conn->cid, 182913c54771SMintz, Yuval p_ll2_conn->input.conn_type, db_msg.spq_prod); 18300a7fb11cSYuval Mintz } 18310a7fb11cSYuval Mintz 18320518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 18330a7fb11cSYuval Mintz u8 connection_handle, 18347c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 18357c7973b2SMintz, Yuval bool notify_fw) 18360a7fb11cSYuval Mintz { 18370518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 18380a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 18390a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18400a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 18410a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 18420a7fb11cSYuval Mintz unsigned long flags; 18430a7fb11cSYuval Mintz int rc = 0; 18440a7fb11cSYuval Mintz 18450a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18460a7fb11cSYuval Mintz if (!p_ll2_conn) 18470a7fb11cSYuval Mintz return -EINVAL; 18480a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 18490a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 18500a7fb11cSYuval Mintz 1851f5823fe6SMichal Kalderon if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet) 18520a7fb11cSYuval Mintz return -EIO; 18530a7fb11cSYuval Mintz 18540a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 18550a7fb11cSYuval Mintz if (p_tx->cur_send_packet) { 18560a7fb11cSYuval Mintz rc = -EEXIST; 18570a7fb11cSYuval Mintz goto out; 18580a7fb11cSYuval Mintz } 18590a7fb11cSYuval Mintz 18600a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 18610a7fb11cSYuval Mintz if (!list_empty(&p_tx->free_descq)) 18620a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 18630a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 18647c7973b2SMintz, Yuval if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds) 18650a7fb11cSYuval Mintz p_curp = NULL; 18660a7fb11cSYuval Mintz 18670a7fb11cSYuval Mintz if (!p_curp) { 18680a7fb11cSYuval Mintz rc = -EBUSY; 18690a7fb11cSYuval Mintz goto out; 18700a7fb11cSYuval Mintz } 18710a7fb11cSYuval Mintz 18720a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 18737c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 18747c7973b2SMintz, Yuval 18757c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 18760a7fb11cSYuval Mintz 18770a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 18780a7fb11cSYuval Mintz 18790a7fb11cSYuval Mintz out: 18800a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 18810a7fb11cSYuval Mintz return rc; 18820a7fb11cSYuval Mintz } 18830a7fb11cSYuval Mintz 18840518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 18850a7fb11cSYuval Mintz u8 connection_handle, 18860a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 18870a7fb11cSYuval Mintz { 18880a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 18890518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 18900a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 18910a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 18920a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 18930a7fb11cSYuval Mintz unsigned long flags; 18940a7fb11cSYuval Mintz 18950a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 18960a7fb11cSYuval Mintz if (!p_ll2_conn) 18970a7fb11cSYuval Mintz return -EINVAL; 18980a7fb11cSYuval Mintz 18990a7fb11cSYuval Mintz if (!p_ll2_conn->tx_queue.cur_send_packet) 19000a7fb11cSYuval Mintz return -EINVAL; 19010a7fb11cSYuval Mintz 19020a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 19030a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 19040a7fb11cSYuval Mintz 19050a7fb11cSYuval Mintz if (cur_send_frag_num >= p_cur_send_packet->bd_used) 19060a7fb11cSYuval Mintz return -EINVAL; 19070a7fb11cSYuval Mintz 19080a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 19090a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 19100a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 19110a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 19120a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 19130a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 19140a7fb11cSYuval Mintz 19150a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 19160a7fb11cSYuval Mintz 19170a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 19180a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 19190a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 19200a7fb11cSYuval Mintz 19210a7fb11cSYuval Mintz return 0; 19220a7fb11cSYuval Mintz } 19230a7fb11cSYuval Mintz 19240518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 19250a7fb11cSYuval Mintz { 19260518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 19270a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 19280a7fb11cSYuval Mintz int rc = -EINVAL; 192915582962SRahul Verma struct qed_ptt *p_ptt; 193015582962SRahul Verma 193115582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 193215582962SRahul Verma if (!p_ptt) 193315582962SRahul Verma return -EAGAIN; 19340a7fb11cSYuval Mintz 19350a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 193615582962SRahul Verma if (!p_ll2_conn) { 193715582962SRahul Verma rc = -EINVAL; 193815582962SRahul Verma goto out; 193915582962SRahul Verma } 19400a7fb11cSYuval Mintz 19410a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 19420a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 19436a42b512SColin Ian King p_ll2_conn->tx_queue.b_cb_registered = false; 1944fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 19450a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 19460a7fb11cSYuval Mintz if (rc) 194715582962SRahul Verma goto out; 1948fc16f56bSMichal Kalderon 19490a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 1950fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 19510a7fb11cSYuval Mintz } 19520a7fb11cSYuval Mintz 19530a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 19546a42b512SColin Ian King p_ll2_conn->rx_queue.b_cb_registered = false; 1955fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 19560a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 19570a7fb11cSYuval Mintz if (rc) 195815582962SRahul Verma goto out; 1959fc16f56bSMichal Kalderon 19600a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 1961fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 19620a7fb11cSYuval Mintz } 19630a7fb11cSYuval Mintz 1964526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 19651d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 19661d6cff4fSYuval Mintz 196713c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1968cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 196915582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 1970cac6f691SSudarsana Reddy Kalluru ETH_P_FCOE, 0, 19711e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 197215582962SRahul Verma qed_llh_remove_protocol_filter(p_hwfn, p_ptt, 1973cac6f691SSudarsana Reddy Kalluru ETH_P_FIP, 0, 19741e128c81SArun Easi QED_LLH_FILTER_ETHERTYPE); 19751e128c81SArun Easi } 19761e128c81SArun Easi 197715582962SRahul Verma out: 197815582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 19790a7fb11cSYuval Mintz return rc; 19800a7fb11cSYuval Mintz } 19810a7fb11cSYuval Mintz 198258de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 198358de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 198458de2898SMintz, Yuval { 198558de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 198658de2898SMintz, Yuval 1987526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 198858de2898SMintz, Yuval return; 198958de2898SMintz, Yuval 199058de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 199158de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 199258de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 199358de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 199458de2898SMintz, Yuval p_buffer->rx_buffer_size, 199558de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 199658de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 199758de2898SMintz, Yuval kfree(p_buffer); 199858de2898SMintz, Yuval } 199958de2898SMintz, Yuval } 20000518c12fSMichal Kalderon 20010518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 20020a7fb11cSYuval Mintz { 20030518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20040a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20050a7fb11cSYuval Mintz 20060a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 20070a7fb11cSYuval Mintz if (!p_ll2_conn) 20080a7fb11cSYuval Mintz return; 20090a7fb11cSYuval Mintz 2010f5823fe6SMichal Kalderon kfree(p_ll2_conn->tx_queue.descq_mem); 20110a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 20120a7fb11cSYuval Mintz 20130a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 20140a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 20150a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 20160a7fb11cSYuval Mintz 20170a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 20180a7fb11cSYuval Mintz 20191d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 20201d6cff4fSYuval Mintz 20210a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 20220a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 20230a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 20240a7fb11cSYuval Mintz } 20250a7fb11cSYuval Mintz 20263587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 20270a7fb11cSYuval Mintz { 20280a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 20290a7fb11cSYuval Mintz u8 i; 20300a7fb11cSYuval Mintz 20310a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 20320a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 20330a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 20340a7fb11cSYuval Mintz if (!p_ll2_connections) { 20350a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 20363587cb87STomer Tayar return -ENOMEM; 20370a7fb11cSYuval Mintz } 20380a7fb11cSYuval Mintz 20390a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 20400a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 20410a7fb11cSYuval Mintz 20423587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 20433587cb87STomer Tayar return 0; 20440a7fb11cSYuval Mintz } 20450a7fb11cSYuval Mintz 20463587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 20470a7fb11cSYuval Mintz { 20480a7fb11cSYuval Mintz int i; 20490a7fb11cSYuval Mintz 20500a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 20513587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 20520a7fb11cSYuval Mintz } 20530a7fb11cSYuval Mintz 20543587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 20550a7fb11cSYuval Mintz { 20563587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 20573587cb87STomer Tayar return; 20583587cb87STomer Tayar 20593587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 20603587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 20610a7fb11cSYuval Mintz } 20620a7fb11cSYuval Mintz 2063fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 2064fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 2065fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 2066fef1c3f7SMintz, Yuval { 2067fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 2068fef1c3f7SMintz, Yuval 2069fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 2070fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 2071fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 2072fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 2073fef1c3f7SMintz, Yuval sizeof(port_stats)); 2074fef1c3f7SMintz, Yuval 2075fef1c3f7SMintz, Yuval p_stats->gsi_invalid_hdr = HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 2076fef1c3f7SMintz, Yuval p_stats->gsi_invalid_pkt_length = 2077fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 2078fef1c3f7SMintz, Yuval p_stats->gsi_unsupported_pkt_typ = 2079fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 2080fef1c3f7SMintz, Yuval p_stats->gsi_crcchksm_error = 2081fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 2082fef1c3f7SMintz, Yuval } 2083fef1c3f7SMintz, Yuval 20840a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(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_tstorm_per_queue_stat tstats; 20900a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 20910a7fb11cSYuval Mintz u32 tstats_addr; 20920a7fb11cSYuval Mintz 20930a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 20940a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 20950a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 20960a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 20970a7fb11cSYuval Mintz 20980a7fb11cSYuval Mintz p_stats->packet_too_big_discard = 20990a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 21000a7fb11cSYuval Mintz p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard); 21010a7fb11cSYuval Mintz } 21020a7fb11cSYuval Mintz 21030a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 21040a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 21050a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 21060a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 21070a7fb11cSYuval Mintz { 21080a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 21090a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 21100a7fb11cSYuval Mintz u32 ustats_addr; 21110a7fb11cSYuval Mintz 21120a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 21130a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 21140a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 21150a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 21160a7fb11cSYuval Mintz 21170a7fb11cSYuval Mintz p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 21180a7fb11cSYuval Mintz p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 21190a7fb11cSYuval Mintz p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 21200a7fb11cSYuval Mintz p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 21210a7fb11cSYuval Mintz p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 21220a7fb11cSYuval Mintz p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 21230a7fb11cSYuval Mintz } 21240a7fb11cSYuval Mintz 21250a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 21260a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 21270a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 21280a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 21290a7fb11cSYuval Mintz { 21300a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 21310a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 21320a7fb11cSYuval Mintz u32 pstats_addr; 21330a7fb11cSYuval Mintz 21340a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 21350a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 21360a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 21370a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 21380a7fb11cSYuval Mintz 21390a7fb11cSYuval Mintz p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes); 21400a7fb11cSYuval Mintz p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes); 21410a7fb11cSYuval Mintz p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes); 21420a7fb11cSYuval Mintz p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts); 21430a7fb11cSYuval Mintz p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts); 21440a7fb11cSYuval Mintz p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts); 21450a7fb11cSYuval Mintz } 21460a7fb11cSYuval Mintz 21470518c12fSMichal Kalderon int qed_ll2_get_stats(void *cxt, 21480a7fb11cSYuval Mintz u8 connection_handle, struct qed_ll2_stats *p_stats) 21490a7fb11cSYuval Mintz { 21500518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21510a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 21520a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 21530a7fb11cSYuval Mintz 21540a7fb11cSYuval Mintz memset(p_stats, 0, sizeof(*p_stats)); 21550a7fb11cSYuval Mintz 21560a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 21570a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 21580a7fb11cSYuval Mintz return -EINVAL; 21590a7fb11cSYuval Mintz 21600a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 21610a7fb11cSYuval Mintz 21620a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 21630a7fb11cSYuval Mintz if (!p_ptt) { 21640a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 21650a7fb11cSYuval Mintz return -EINVAL; 21660a7fb11cSYuval Mintz } 21670a7fb11cSYuval Mintz 2168fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2169fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 21700a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21710a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21720a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 21730a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 21740a7fb11cSYuval Mintz 21750a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 21760a7fb11cSYuval Mintz return 0; 21770a7fb11cSYuval Mintz } 21780a7fb11cSYuval Mintz 21790518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 21800518c12fSMichal Kalderon u8 connection_handle, 21810518c12fSMichal Kalderon void *cookie, 21820518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 21830518c12fSMichal Kalderon bool b_last_packet) 21840518c12fSMichal Kalderon { 21850518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21860518c12fSMichal Kalderon 21870518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 21880518c12fSMichal Kalderon } 21890518c12fSMichal Kalderon 21900a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 21910a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 21920a7fb11cSYuval Mintz void *cookie) 21930a7fb11cSYuval Mintz { 21940a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 21950a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 21960a7fb11cSYuval Mintz } 21970a7fb11cSYuval Mintz 21980518c12fSMichal Kalderon struct qed_ll2_cbs ll2_cbs = { 21990518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 22000518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 22010518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 22020518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 22030518c12fSMichal Kalderon }; 22040518c12fSMichal Kalderon 220513c54771SMintz, Yuval static void qed_ll2_set_conn_data(struct qed_dev *cdev, 220613c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 220713c54771SMintz, Yuval struct qed_ll2_params *params, 220813c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 22090518c12fSMichal Kalderon u8 *handle, bool lb) 221013c54771SMintz, Yuval { 221113c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 221213c54771SMintz, Yuval 221313c54771SMintz, Yuval data->input.conn_type = conn_type; 221413c54771SMintz, Yuval data->input.mtu = params->mtu; 221513c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 221613c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 221713c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 221813c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 221913c54771SMintz, Yuval data->p_connection_handle = handle; 22200518c12fSMichal Kalderon data->cbs = &ll2_cbs; 22210518c12fSMichal Kalderon ll2_cbs.cookie = QED_LEADING_HWFN(cdev); 22220518c12fSMichal Kalderon 222313c54771SMintz, Yuval if (lb) { 2224526d1d05SKalderon, Michal data->input.tx_tc = PKT_LB_TC; 222513c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 222613c54771SMintz, Yuval } else { 222713c54771SMintz, Yuval data->input.tx_tc = 0; 222813c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 222913c54771SMintz, Yuval } 223013c54771SMintz, Yuval } 223113c54771SMintz, Yuval 223213c54771SMintz, Yuval static int qed_ll2_start_ooo(struct qed_dev *cdev, 223313c54771SMintz, Yuval struct qed_ll2_params *params) 223413c54771SMintz, Yuval { 223513c54771SMintz, Yuval struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); 223613c54771SMintz, Yuval u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 223713c54771SMintz, Yuval struct qed_ll2_acquire_data data; 223813c54771SMintz, Yuval int rc; 223913c54771SMintz, Yuval 224013c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, 2241526d1d05SKalderon, Michal QED_LL2_TYPE_OOO, handle, true); 224213c54771SMintz, Yuval 224313c54771SMintz, Yuval rc = qed_ll2_acquire_connection(hwfn, &data); 224413c54771SMintz, Yuval if (rc) { 224513c54771SMintz, Yuval DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n"); 224613c54771SMintz, Yuval goto out; 224713c54771SMintz, Yuval } 224813c54771SMintz, Yuval 224913c54771SMintz, Yuval rc = qed_ll2_establish_connection(hwfn, *handle); 225013c54771SMintz, Yuval if (rc) { 225113c54771SMintz, Yuval DP_INFO(cdev, "Failed to establist LL2 OOO connection\n"); 225213c54771SMintz, Yuval goto fail; 225313c54771SMintz, Yuval } 225413c54771SMintz, Yuval 225513c54771SMintz, Yuval return 0; 225613c54771SMintz, Yuval 225713c54771SMintz, Yuval fail: 225813c54771SMintz, Yuval qed_ll2_release_connection(hwfn, *handle); 225913c54771SMintz, Yuval out: 226013c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 226113c54771SMintz, Yuval return rc; 226213c54771SMintz, Yuval } 226313c54771SMintz, Yuval 22640a7fb11cSYuval Mintz static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 22650a7fb11cSYuval Mintz { 226688a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 22670a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 226813c54771SMintz, Yuval struct qed_ll2_acquire_data data; 22690a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 22700a7fb11cSYuval Mintz int rc, i; 22710518c12fSMichal Kalderon 22720a7fb11cSYuval Mintz 22730a7fb11cSYuval Mintz /* Initialize LL2 locks & lists */ 22740a7fb11cSYuval Mintz INIT_LIST_HEAD(&cdev->ll2->list); 22750a7fb11cSYuval Mintz spin_lock_init(&cdev->ll2->lock); 22760a7fb11cSYuval Mintz cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 22770a7fb11cSYuval Mintz L1_CACHE_BYTES + params->mtu; 22780a7fb11cSYuval Mintz 22790a7fb11cSYuval Mintz /*Allocate memory for LL2 */ 22800a7fb11cSYuval Mintz DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", 22810a7fb11cSYuval Mintz cdev->ll2->rx_size); 22820a7fb11cSYuval Mintz for (i = 0; i < QED_LL2_RX_SIZE; i++) { 22830a7fb11cSYuval Mintz buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 22840a7fb11cSYuval Mintz if (!buffer) { 22850a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 22860a7fb11cSYuval Mintz goto fail; 22870a7fb11cSYuval Mintz } 22880a7fb11cSYuval Mintz 22890a7fb11cSYuval Mintz rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 22900a7fb11cSYuval Mintz &buffer->phys_addr); 22910a7fb11cSYuval Mintz if (rc) { 22920a7fb11cSYuval Mintz kfree(buffer); 22930a7fb11cSYuval Mintz goto fail; 22940a7fb11cSYuval Mintz } 22950a7fb11cSYuval Mintz 22960a7fb11cSYuval Mintz list_add_tail(&buffer->list, &cdev->ll2->list); 22970a7fb11cSYuval Mintz } 22980a7fb11cSYuval Mintz 22990a7fb11cSYuval Mintz switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { 23001e128c81SArun Easi case QED_PCI_FCOE: 23011e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 23021e128c81SArun Easi break; 23030a7fb11cSYuval Mintz case QED_PCI_ISCSI: 23040a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ISCSI; 23050a7fb11cSYuval Mintz break; 23060a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 23070a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 23080a7fb11cSYuval Mintz break; 23090a7fb11cSYuval Mintz default: 23100a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 23110a7fb11cSYuval Mintz } 23120a7fb11cSYuval Mintz 231313c54771SMintz, Yuval qed_ll2_set_conn_data(cdev, &data, params, conn_type, 23140518c12fSMichal Kalderon &cdev->ll2->handle, false); 23150629a330SArnd Bergmann 231613c54771SMintz, Yuval rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data); 23170a7fb11cSYuval Mintz if (rc) { 23180a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire LL2 connection\n"); 23190a7fb11cSYuval Mintz goto fail; 23200a7fb11cSYuval Mintz } 23210a7fb11cSYuval Mintz 23220a7fb11cSYuval Mintz rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), 23230a7fb11cSYuval Mintz cdev->ll2->handle); 23240a7fb11cSYuval Mintz if (rc) { 23250a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to establish LL2 connection\n"); 23260a7fb11cSYuval Mintz goto release_fail; 23270a7fb11cSYuval Mintz } 23280a7fb11cSYuval Mintz 23290a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 23300a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 233188a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 23320a7fb11cSYuval Mintz rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), 23330a7fb11cSYuval Mintz cdev->ll2->handle, 23340a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 23350a7fb11cSYuval Mintz if (rc) { 23360a7fb11cSYuval Mintz DP_INFO(cdev, 23370a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 23380a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 23390a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 23400a7fb11cSYuval Mintz kfree(buffer->data); 23410a7fb11cSYuval Mintz list_del(&buffer->list); 23420a7fb11cSYuval Mintz kfree(buffer); 23430a7fb11cSYuval Mintz } else { 23440a7fb11cSYuval Mintz cdev->ll2->rx_cnt++; 23450a7fb11cSYuval Mintz } 23460a7fb11cSYuval Mintz } 23470a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 23480a7fb11cSYuval Mintz 23490a7fb11cSYuval Mintz if (!cdev->ll2->rx_cnt) { 23500a7fb11cSYuval Mintz DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); 23510a7fb11cSYuval Mintz goto release_terminate; 23520a7fb11cSYuval Mintz } 23530a7fb11cSYuval Mintz 23540a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 23550a7fb11cSYuval Mintz DP_INFO(cdev, "Invalid Ethernet address\n"); 23560a7fb11cSYuval Mintz goto release_terminate; 23570a7fb11cSYuval Mintz } 23580a7fb11cSYuval Mintz 2359da090917STomer Tayar if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI) { 23601d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 23611d6cff4fSYuval Mintz rc = qed_ll2_start_ooo(cdev, params); 23621d6cff4fSYuval Mintz if (rc) { 23631d6cff4fSYuval Mintz DP_INFO(cdev, 23641d6cff4fSYuval Mintz "Failed to initialize the OOO LL2 queue\n"); 23651d6cff4fSYuval Mintz goto release_terminate; 23661d6cff4fSYuval Mintz } 23671d6cff4fSYuval Mintz } 23681d6cff4fSYuval Mintz 23690a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 23700a7fb11cSYuval Mintz if (!p_ptt) { 23710a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 23720a7fb11cSYuval Mintz goto release_terminate; 23730a7fb11cSYuval Mintz } 23740a7fb11cSYuval Mintz 23750a7fb11cSYuval Mintz rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 23760a7fb11cSYuval Mintz params->ll2_mac_address); 23770a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 23780a7fb11cSYuval Mintz if (rc) { 23790a7fb11cSYuval Mintz DP_ERR(cdev, "Failed to allocate LLH filter\n"); 23800a7fb11cSYuval Mintz goto release_terminate_all; 23810a7fb11cSYuval Mintz } 23820a7fb11cSYuval Mintz 23830a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 23840a7fb11cSYuval Mintz return 0; 23850a7fb11cSYuval Mintz 23860a7fb11cSYuval Mintz release_terminate_all: 23870a7fb11cSYuval Mintz 23880a7fb11cSYuval Mintz release_terminate: 23890a7fb11cSYuval Mintz qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 23900a7fb11cSYuval Mintz release_fail: 23910a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 23920a7fb11cSYuval Mintz fail: 23930a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 23940a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 23950a7fb11cSYuval Mintz return -EINVAL; 23960a7fb11cSYuval Mintz } 23970a7fb11cSYuval Mintz 23980a7fb11cSYuval Mintz static int qed_ll2_stop(struct qed_dev *cdev) 23990a7fb11cSYuval Mintz { 24000a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 24010a7fb11cSYuval Mintz int rc; 24020a7fb11cSYuval Mintz 24030a7fb11cSYuval Mintz if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 24040a7fb11cSYuval Mintz return 0; 24050a7fb11cSYuval Mintz 24060a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); 24070a7fb11cSYuval Mintz if (!p_ptt) { 24080a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to acquire PTT\n"); 24090a7fb11cSYuval Mintz goto fail; 24100a7fb11cSYuval Mintz } 24110a7fb11cSYuval Mintz 24120a7fb11cSYuval Mintz qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, 24130a7fb11cSYuval Mintz cdev->ll2_mac_address); 24140a7fb11cSYuval Mintz qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); 24150a7fb11cSYuval Mintz eth_zero_addr(cdev->ll2_mac_address); 24160a7fb11cSYuval Mintz 2417da090917STomer Tayar if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI) 24181d6cff4fSYuval Mintz qed_ll2_stop_ooo(cdev); 24191d6cff4fSYuval Mintz 24200a7fb11cSYuval Mintz rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), 24210a7fb11cSYuval Mintz cdev->ll2->handle); 24220a7fb11cSYuval Mintz if (rc) 24230a7fb11cSYuval Mintz DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 24240a7fb11cSYuval Mintz 24250a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 24260a7fb11cSYuval Mintz 24270a7fb11cSYuval Mintz qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); 24280a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 24290a7fb11cSYuval Mintz 24300a7fb11cSYuval Mintz return rc; 24310a7fb11cSYuval Mintz fail: 24320a7fb11cSYuval Mintz return -EINVAL; 24330a7fb11cSYuval Mintz } 24340a7fb11cSYuval Mintz 2435cac6f691SSudarsana Reddy Kalluru static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, 2436cac6f691SSudarsana Reddy Kalluru unsigned long xmit_flags) 24370a7fb11cSYuval Mintz { 24387c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 24390a7fb11cSYuval Mintz const skb_frag_t *frag; 24400a7fb11cSYuval Mintz int rc = -EINVAL, i; 24410a7fb11cSYuval Mintz dma_addr_t mapping; 24420a7fb11cSYuval Mintz u16 vlan = 0; 24430a7fb11cSYuval Mintz u8 flags = 0; 24440a7fb11cSYuval Mintz 24450a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 2446ff81de73SColin Ian King DP_INFO(cdev, "Cannot transmit a checksummed packet\n"); 24470a7fb11cSYuval Mintz return -EINVAL; 24480a7fb11cSYuval Mintz } 24490a7fb11cSYuval Mintz 24500a7fb11cSYuval Mintz if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { 24510a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 24520a7fb11cSYuval Mintz 1 + skb_shinfo(skb)->nr_frags); 24530a7fb11cSYuval Mintz return -EINVAL; 24540a7fb11cSYuval Mintz } 24550a7fb11cSYuval Mintz 24560a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 24570a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 24580a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 24590a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 24600a7fb11cSYuval Mintz return -EINVAL; 24610a7fb11cSYuval Mintz } 24620a7fb11cSYuval Mintz 24630a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 24640a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 24650a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2466be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 24670a7fb11cSYuval Mintz 24680a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 24690a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2470be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 24710a7fb11cSYuval Mintz } 24720a7fb11cSYuval Mintz 24737c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 24747c7973b2SMintz, Yuval pkt.num_of_bds = 1 + skb_shinfo(skb)->nr_frags; 24757c7973b2SMintz, Yuval pkt.vlan = vlan; 24767c7973b2SMintz, Yuval pkt.bd_flags = flags; 24777c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 24787c7973b2SMintz, Yuval pkt.first_frag = mapping; 24797c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 24807c7973b2SMintz, Yuval pkt.cookie = skb; 2481cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) && 2482cac6f691SSudarsana Reddy Kalluru test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags)) 2483cac6f691SSudarsana Reddy Kalluru pkt.remove_stag = true; 24847c7973b2SMintz, Yuval 24857c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(&cdev->hwfns[0], cdev->ll2->handle, 24867c7973b2SMintz, Yuval &pkt, 1); 24870a7fb11cSYuval Mintz if (rc) 24880a7fb11cSYuval Mintz goto err; 24890a7fb11cSYuval Mintz 24900a7fb11cSYuval Mintz for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 24910a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 24920a7fb11cSYuval Mintz 2493d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2494d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2495d2201a21SMintz, Yuval 2496d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 24970a7fb11cSYuval Mintz DP_NOTICE(cdev, 24980a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 24990a7fb11cSYuval Mintz goto err; 25000a7fb11cSYuval Mintz } 25010a7fb11cSYuval Mintz 25020a7fb11cSYuval Mintz rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), 25030a7fb11cSYuval Mintz cdev->ll2->handle, 25040a7fb11cSYuval Mintz mapping, 25050a7fb11cSYuval Mintz skb_frag_size(frag)); 25060a7fb11cSYuval Mintz 25070a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 25080a7fb11cSYuval Mintz * we can't free memory, will need to wait for completion. 25090a7fb11cSYuval Mintz */ 25100a7fb11cSYuval Mintz if (rc) 25110a7fb11cSYuval Mintz goto err2; 25120a7fb11cSYuval Mintz } 25130a7fb11cSYuval Mintz 25140a7fb11cSYuval Mintz return 0; 25150a7fb11cSYuval Mintz 25160a7fb11cSYuval Mintz err: 25170a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 25180a7fb11cSYuval Mintz 25190a7fb11cSYuval Mintz err2: 25200a7fb11cSYuval Mintz return rc; 25210a7fb11cSYuval Mintz } 25220a7fb11cSYuval Mintz 25230a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 25240a7fb11cSYuval Mintz { 25250a7fb11cSYuval Mintz if (!cdev->ll2) 25260a7fb11cSYuval Mintz return -EINVAL; 25270a7fb11cSYuval Mintz 25280a7fb11cSYuval Mintz return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 25290a7fb11cSYuval Mintz cdev->ll2->handle, stats); 25300a7fb11cSYuval Mintz } 25310a7fb11cSYuval Mintz 25320a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 25330a7fb11cSYuval Mintz .start = &qed_ll2_start, 25340a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 25350a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 25360a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 25370a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 25380a7fb11cSYuval Mintz }; 25390a7fb11cSYuval Mintz 25400a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 25410a7fb11cSYuval Mintz { 25420a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 25430a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 25440a7fb11cSYuval Mintz } 25450a7fb11cSYuval Mintz 25460a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 25470a7fb11cSYuval Mintz { 25480a7fb11cSYuval Mintz kfree(cdev->ll2); 25490a7fb11cSYuval Mintz cdev->ll2 = NULL; 25500a7fb11cSYuval Mintz } 2551