11f4d4ed6SAlexander Lobakin // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 20a7fb11cSYuval Mintz /* QLogic qed NIC Driver 3e8f1cb50SMintz, Yuval * Copyright (c) 2015-2017 QLogic Corporation 4663eacd8SAlexander Lobakin * Copyright (c) 2019-2020 Marvell International Ltd. 50a7fb11cSYuval Mintz */ 60a7fb11cSYuval Mintz 70a7fb11cSYuval Mintz #include <linux/types.h> 80a7fb11cSYuval Mintz #include <asm/byteorder.h> 90a7fb11cSYuval Mintz #include <linux/dma-mapping.h> 100a7fb11cSYuval Mintz #include <linux/if_vlan.h> 110a7fb11cSYuval Mintz #include <linux/kernel.h> 120a7fb11cSYuval Mintz #include <linux/pci.h> 130a7fb11cSYuval Mintz #include <linux/slab.h> 140a7fb11cSYuval Mintz #include <linux/stddef.h> 150a7fb11cSYuval Mintz #include <linux/workqueue.h> 160a7fb11cSYuval Mintz #include <net/ipv6.h> 170a7fb11cSYuval Mintz #include <linux/bitops.h> 180a7fb11cSYuval Mintz #include <linux/delay.h> 190a7fb11cSYuval Mintz #include <linux/errno.h> 200a7fb11cSYuval Mintz #include <linux/etherdevice.h> 210a7fb11cSYuval Mintz #include <linux/io.h> 220a7fb11cSYuval Mintz #include <linux/list.h> 230a7fb11cSYuval Mintz #include <linux/mutex.h> 240a7fb11cSYuval Mintz #include <linux/spinlock.h> 250a7fb11cSYuval Mintz #include <linux/string.h> 260a7fb11cSYuval Mintz #include <linux/qed/qed_ll2_if.h> 270a7fb11cSYuval Mintz #include "qed.h" 280a7fb11cSYuval Mintz #include "qed_cxt.h" 290a7fb11cSYuval Mintz #include "qed_dev_api.h" 300a7fb11cSYuval Mintz #include "qed_hsi.h" 31ee824f4bSOmkar Kulkarni #include "qed_iro_hsi.h" 320a7fb11cSYuval Mintz #include "qed_hw.h" 330a7fb11cSYuval Mintz #include "qed_int.h" 340a7fb11cSYuval Mintz #include "qed_ll2.h" 350a7fb11cSYuval Mintz #include "qed_mcp.h" 361d6cff4fSYuval Mintz #include "qed_ooo.h" 370a7fb11cSYuval Mintz #include "qed_reg_addr.h" 380a7fb11cSYuval Mintz #include "qed_sp.h" 39b71b9afdSKalderon, Michal #include "qed_rdma.h" 400a7fb11cSYuval Mintz 416a42b512SColin Ian King #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered) 426a42b512SColin Ian King #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered) 430a7fb11cSYuval Mintz 440a7fb11cSYuval Mintz #define QED_LL2_TX_SIZE (256) 450a7fb11cSYuval Mintz #define QED_LL2_RX_SIZE (4096) 460a7fb11cSYuval Mintz 4717696cadSManish Chopra #define QED_LL2_INVALID_STATS_ID 0xff 4817696cadSManish Chopra 490a7fb11cSYuval Mintz struct qed_cb_ll2_info { 500a7fb11cSYuval Mintz int rx_cnt; 510a7fb11cSYuval Mintz u32 rx_size; 520a7fb11cSYuval Mintz u8 handle; 530a7fb11cSYuval Mintz 540a7fb11cSYuval Mintz /* Lock protecting LL2 buffer lists in sleepless context */ 550a7fb11cSYuval Mintz spinlock_t lock; 560a7fb11cSYuval Mintz struct list_head list; 570a7fb11cSYuval Mintz 580a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *cbs; 590a7fb11cSYuval Mintz void *cb_cookie; 600a7fb11cSYuval Mintz }; 610a7fb11cSYuval Mintz 620a7fb11cSYuval Mintz struct qed_ll2_buffer { 630a7fb11cSYuval Mintz struct list_head list; 640a7fb11cSYuval Mintz void *data; 650a7fb11cSYuval Mintz dma_addr_t phys_addr; 660a7fb11cSYuval Mintz }; 670a7fb11cSYuval Mintz 6817696cadSManish Chopra static u8 qed_ll2_handle_to_stats_id(struct qed_hwfn *p_hwfn, 6917696cadSManish Chopra u8 ll2_queue_type, u8 qid) 7017696cadSManish Chopra { 7117696cadSManish Chopra u8 stats_id; 7217696cadSManish Chopra 7317696cadSManish Chopra /* For legacy (RAM based) queues, the stats_id will be set as the 7417696cadSManish Chopra * queue_id. Otherwise (context based queue), it will be set to 7517696cadSManish Chopra * the "abs_pf_id" offset from the end of the RAM based queue IDs. 7617696cadSManish Chopra * If the final value exceeds the total counters amount, return 7717696cadSManish Chopra * INVALID value to indicate that the stats for this connection should 7817696cadSManish Chopra * be disabled. 7917696cadSManish Chopra */ 8017696cadSManish Chopra if (ll2_queue_type == QED_LL2_RX_TYPE_LEGACY) 8117696cadSManish Chopra stats_id = qid; 8217696cadSManish Chopra else 8317696cadSManish Chopra stats_id = MAX_NUM_LL2_RX_RAM_QUEUES + p_hwfn->abs_pf_id; 8417696cadSManish Chopra 8517696cadSManish Chopra if (stats_id < MAX_NUM_LL2_TX_STATS_COUNTERS) 8617696cadSManish Chopra return stats_id; 8717696cadSManish Chopra else 8817696cadSManish Chopra return QED_LL2_INVALID_STATS_ID; 8917696cadSManish Chopra } 9017696cadSManish Chopra 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: 2427e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, cdev->ll2->handle, 2430a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 2440a7fb11cSYuval Mintz if (rc) 2450a7fb11cSYuval Mintz qed_ll2_dealloc_buffer(cdev, buffer); 2460a7fb11cSYuval Mintz } 2470a7fb11cSYuval Mintz 2480a7fb11cSYuval Mintz static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2490a7fb11cSYuval Mintz u8 connection_handle, 2500a7fb11cSYuval Mintz bool b_lock, 2510a7fb11cSYuval Mintz bool b_only_active) 2520a7fb11cSYuval Mintz { 2530a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; 2540a7fb11cSYuval Mintz 2550a7fb11cSYuval Mintz if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) 2560a7fb11cSYuval Mintz return NULL; 2570a7fb11cSYuval Mintz 2580a7fb11cSYuval Mintz if (!p_hwfn->p_ll2_info) 2590a7fb11cSYuval Mintz return NULL; 2600a7fb11cSYuval Mintz 2610a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 2620a7fb11cSYuval Mintz 2630a7fb11cSYuval Mintz if (b_only_active) { 2640a7fb11cSYuval Mintz if (b_lock) 2650a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 2660a7fb11cSYuval Mintz if (p_ll2_conn->b_active) 2670a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2680a7fb11cSYuval Mintz if (b_lock) 2690a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 2700a7fb11cSYuval Mintz } else { 2710a7fb11cSYuval Mintz p_ret = p_ll2_conn; 2720a7fb11cSYuval Mintz } 2730a7fb11cSYuval Mintz 2740a7fb11cSYuval Mintz return p_ret; 2750a7fb11cSYuval Mintz } 2760a7fb11cSYuval Mintz 2770a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, 2780a7fb11cSYuval Mintz u8 connection_handle) 2790a7fb11cSYuval Mintz { 2800a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); 2810a7fb11cSYuval Mintz } 2820a7fb11cSYuval Mintz 2830a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, 2840a7fb11cSYuval Mintz u8 connection_handle) 2850a7fb11cSYuval Mintz { 2860a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); 2870a7fb11cSYuval Mintz } 2880a7fb11cSYuval Mintz 2890a7fb11cSYuval Mintz static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn 2900a7fb11cSYuval Mintz *p_hwfn, 2910a7fb11cSYuval Mintz u8 connection_handle) 2920a7fb11cSYuval Mintz { 2930a7fb11cSYuval Mintz return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); 2940a7fb11cSYuval Mintz } 2950a7fb11cSYuval Mintz 2960a7fb11cSYuval Mintz static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 2970a7fb11cSYuval Mintz { 2980a7fb11cSYuval Mintz bool b_last_packet = false, b_last_frag = false; 2990a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 3000a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 3010a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 3026291c608SMichal Kalderon unsigned long flags = 0; 303abd49676SRam Amrani dma_addr_t tx_frag; 3040a7fb11cSYuval Mintz 3050a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 3060a7fb11cSYuval Mintz if (!p_ll2_conn) 3070a7fb11cSYuval Mintz return; 3080a7fb11cSYuval Mintz 3090a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 3100a7fb11cSYuval Mintz 3116291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3120a7fb11cSYuval Mintz while (!list_empty(&p_tx->active_descq)) { 3130a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3140a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3150a7fb11cSYuval Mintz if (!p_pkt) 3160a7fb11cSYuval Mintz break; 3170a7fb11cSYuval Mintz 3180a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3190a7fb11cSYuval Mintz b_last_packet = list_empty(&p_tx->active_descq); 3200a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3216291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 322526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 3231d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 3241d6cff4fSYuval Mintz 3251d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 3261d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 3271d6cff4fSYuval Mintz p_buffer); 3281d6cff4fSYuval Mintz } else { 3290a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3300a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3311d6cff4fSYuval Mintz b_last_frag = 3321d6cff4fSYuval Mintz p_tx->cur_completing_bd_idx == p_pkt->bd_used; 333abd49676SRam Amrani tx_frag = p_pkt->bds_set[0].tx_frag; 3340518c12fSMichal Kalderon p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie, 335abd49676SRam Amrani p_ll2_conn->my_id, 336abd49676SRam Amrani p_pkt->cookie, 337abd49676SRam Amrani tx_frag, 338abd49676SRam Amrani b_last_frag, 339abd49676SRam Amrani b_last_packet); 3401d6cff4fSYuval Mintz } 3416291c608SMichal Kalderon spin_lock_irqsave(&p_tx->lock, flags); 3420a7fb11cSYuval Mintz } 3436291c608SMichal Kalderon spin_unlock_irqrestore(&p_tx->lock, flags); 3440a7fb11cSYuval Mintz } 3450a7fb11cSYuval Mintz 3460a7fb11cSYuval Mintz static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 3470a7fb11cSYuval Mintz { 3480a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = p_cookie; 3490a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 3500a7fb11cSYuval Mintz u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; 3510a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt; 3520a7fb11cSYuval Mintz bool b_last_frag = false; 3530a7fb11cSYuval Mintz unsigned long flags; 3540a7fb11cSYuval Mintz int rc = -EINVAL; 3550a7fb11cSYuval Mintz 35637110237SShai Malin if (!p_ll2_conn) 35737110237SShai Malin return rc; 35837110237SShai Malin 3590a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 3600a7fb11cSYuval Mintz if (p_tx->b_completing_packet) { 3610a7fb11cSYuval Mintz rc = -EBUSY; 3620a7fb11cSYuval Mintz goto out; 3630a7fb11cSYuval Mintz } 3640a7fb11cSYuval Mintz 3650a7fb11cSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 3660a7fb11cSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 3670a7fb11cSYuval Mintz while (num_bds) { 3680a7fb11cSYuval Mintz if (list_empty(&p_tx->active_descq)) 3690a7fb11cSYuval Mintz goto out; 3700a7fb11cSYuval Mintz 3710a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 3720a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 3730a7fb11cSYuval Mintz if (!p_pkt) 3740a7fb11cSYuval Mintz goto out; 3750a7fb11cSYuval Mintz 3760a7fb11cSYuval Mintz p_tx->b_completing_packet = true; 3770a7fb11cSYuval Mintz p_tx->cur_completing_packet = *p_pkt; 3780a7fb11cSYuval Mintz num_bds_in_packet = p_pkt->bd_used; 3790a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 3800a7fb11cSYuval Mintz 381891e861eSShai Malin if (unlikely(num_bds < num_bds_in_packet)) { 3820a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 3830a7fb11cSYuval Mintz "Rest of BDs does not cover whole packet\n"); 3840a7fb11cSYuval Mintz goto out; 3850a7fb11cSYuval Mintz } 3860a7fb11cSYuval Mintz 3870a7fb11cSYuval Mintz num_bds -= num_bds_in_packet; 3880a7fb11cSYuval Mintz p_tx->bds_idx += num_bds_in_packet; 3890a7fb11cSYuval Mintz while (num_bds_in_packet--) 3900a7fb11cSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 3910a7fb11cSYuval Mintz 3920a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 1; 3930a7fb11cSYuval Mintz b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; 3940a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 3950a7fb11cSYuval Mintz 3960a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 3970518c12fSMichal Kalderon 3980518c12fSMichal Kalderon p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie, 399abd49676SRam Amrani p_ll2_conn->my_id, 400abd49676SRam Amrani p_pkt->cookie, 4010518c12fSMichal Kalderon p_pkt->bds_set[0].tx_frag, 402abd49676SRam Amrani b_last_frag, !num_bds); 4030518c12fSMichal Kalderon 4040a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 4050a7fb11cSYuval Mintz } 4060a7fb11cSYuval Mintz 4070a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 4080a7fb11cSYuval Mintz rc = 0; 4090a7fb11cSYuval Mintz out: 4100a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 4110a7fb11cSYuval Mintz return rc; 4120a7fb11cSYuval Mintz } 4130a7fb11cSYuval Mintz 4140518c12fSMichal Kalderon static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn, 415abd49676SRam Amrani union core_rx_cqe_union *p_cqe, 4160518c12fSMichal Kalderon struct qed_ll2_comp_rx_data *data) 417abd49676SRam Amrani { 4180518c12fSMichal Kalderon data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); 4190518c12fSMichal Kalderon data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); 4200518c12fSMichal Kalderon data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); 4210518c12fSMichal Kalderon data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); 4220518c12fSMichal Kalderon data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); 4230518c12fSMichal Kalderon data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error; 424da090917STomer Tayar data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id); 425da090917STomer Tayar 426da090917STomer Tayar data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp); 427abd49676SRam Amrani } 428abd49676SRam Amrani 42968be910cSMintz, Yuval static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, 43068be910cSMintz, Yuval union core_rx_cqe_union *p_cqe, 43168be910cSMintz, Yuval struct qed_ll2_comp_rx_data *data) 43268be910cSMintz, Yuval { 43368be910cSMintz, Yuval data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); 4341e99c497SMichal Kalderon data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); 43568be910cSMintz, Yuval data->length.packet_length = 43668be910cSMintz, Yuval le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); 43768be910cSMintz, Yuval data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); 43868be910cSMintz, Yuval data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]); 43968be910cSMintz, Yuval data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]); 44068be910cSMintz, Yuval data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; 44168be910cSMintz, Yuval } 44268be910cSMintz, Yuval 44368be910cSMintz, Yuval static int 4446f34a284SMichal Kalderon qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, 4456f34a284SMichal Kalderon struct qed_ll2_info *p_ll2_conn, 4466f34a284SMichal Kalderon union core_rx_cqe_union *p_cqe, 4476f34a284SMichal Kalderon unsigned long *p_lock_flags) 4486f34a284SMichal Kalderon { 4496f34a284SMichal Kalderon struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4506f34a284SMichal Kalderon struct core_rx_slow_path_cqe *sp_cqe; 4516f34a284SMichal Kalderon 4526f34a284SMichal Kalderon sp_cqe = &p_cqe->rx_cqe_sp; 4536f34a284SMichal Kalderon if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { 4546f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4556f34a284SMichal Kalderon "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", 4566f34a284SMichal Kalderon sp_cqe->ramrod_cmd_id); 4576f34a284SMichal Kalderon return -EINVAL; 4586f34a284SMichal Kalderon } 4596f34a284SMichal Kalderon 4606f34a284SMichal Kalderon if (!p_ll2_conn->cbs.slowpath_cb) { 4616f34a284SMichal Kalderon DP_NOTICE(p_hwfn, 4626f34a284SMichal Kalderon "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); 4636f34a284SMichal Kalderon return -EINVAL; 4646f34a284SMichal Kalderon } 4656f34a284SMichal Kalderon 4666f34a284SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 4676f34a284SMichal Kalderon 4686f34a284SMichal Kalderon p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, 4696f34a284SMichal Kalderon p_ll2_conn->my_id, 4706f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[0]), 4716f34a284SMichal Kalderon le32_to_cpu(sp_cqe->opaque_data.data[1])); 4726f34a284SMichal Kalderon 4736f34a284SMichal Kalderon spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 4746f34a284SMichal Kalderon 4756f34a284SMichal Kalderon return 0; 4766f34a284SMichal Kalderon } 4776f34a284SMichal Kalderon 4786f34a284SMichal Kalderon static int 47968be910cSMintz, Yuval qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, 4800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 4810a7fb11cSYuval Mintz union core_rx_cqe_union *p_cqe, 48268be910cSMintz, Yuval unsigned long *p_lock_flags, bool b_last_cqe) 4830a7fb11cSYuval Mintz { 4840a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 4850a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 48668be910cSMintz, Yuval struct qed_ll2_comp_rx_data data; 4870a7fb11cSYuval Mintz 4880a7fb11cSYuval Mintz if (!list_empty(&p_rx->active_descq)) 4890a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 4900a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 491891e861eSShai Malin if (unlikely(!p_pkt)) { 4920a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 49368be910cSMintz, Yuval "[%d] LL2 Rx completion but active_descq is empty\n", 49413c54771SMintz, Yuval p_ll2_conn->input.conn_type); 49568be910cSMintz, Yuval 4960a7fb11cSYuval Mintz return -EIO; 4970a7fb11cSYuval Mintz } 4980a7fb11cSYuval Mintz list_del(&p_pkt->list_entry); 4990a7fb11cSYuval Mintz 5000518c12fSMichal Kalderon if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR) 50168be910cSMintz, Yuval qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data); 5020518c12fSMichal Kalderon else 5030518c12fSMichal Kalderon qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data); 504891e861eSShai Malin if (unlikely(qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)) 5050a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 5060a7fb11cSYuval Mintz "Mismatch between active_descq and the LL2 Rx chain\n"); 50768be910cSMintz, Yuval 5080a7fb11cSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 5090a7fb11cSYuval Mintz 51068be910cSMintz, Yuval data.connection_handle = p_ll2_conn->my_id; 51168be910cSMintz, Yuval data.cookie = p_pkt->cookie; 51268be910cSMintz, Yuval data.rx_buf_addr = p_pkt->rx_buf_addr; 51368be910cSMintz, Yuval data.b_last_packet = b_last_cqe; 51468be910cSMintz, Yuval 5151df2adedSRam Amrani spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); 5160518c12fSMichal Kalderon p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data); 5170518c12fSMichal Kalderon 5181df2adedSRam Amrani spin_lock_irqsave(&p_rx->lock, *p_lock_flags); 5190a7fb11cSYuval Mintz 5200a7fb11cSYuval Mintz return 0; 5210a7fb11cSYuval Mintz } 5220a7fb11cSYuval Mintz 5230a7fb11cSYuval Mintz static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) 5240a7fb11cSYuval Mintz { 52513c54771SMintz, Yuval struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie; 5260a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 5270a7fb11cSYuval Mintz union core_rx_cqe_union *cqe = NULL; 5280a7fb11cSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 5290a7fb11cSYuval Mintz unsigned long flags = 0; 5300a7fb11cSYuval Mintz int rc = 0; 5310a7fb11cSYuval Mintz 53237110237SShai Malin if (!p_ll2_conn) 53337110237SShai Malin return rc; 53437110237SShai Malin 5350a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 53637110237SShai Malin 53737110237SShai Malin if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) { 53837110237SShai Malin spin_unlock_irqrestore(&p_rx->lock, flags); 53937110237SShai Malin return 0; 54037110237SShai Malin } 54137110237SShai Malin 5420a7fb11cSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 5430a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5440a7fb11cSYuval Mintz 5450a7fb11cSYuval Mintz while (cq_new_idx != cq_old_idx) { 5460a7fb11cSYuval Mintz bool b_last_cqe = (cq_new_idx == cq_old_idx); 5470a7fb11cSYuval Mintz 54813c54771SMintz, Yuval cqe = 54913c54771SMintz, Yuval (union core_rx_cqe_union *) 55013c54771SMintz, Yuval qed_chain_consume(&p_rx->rcq_chain); 5510a7fb11cSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 5520a7fb11cSYuval Mintz 5530a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 5540a7fb11cSYuval Mintz QED_MSG_LL2, 5550a7fb11cSYuval Mintz "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n", 5560a7fb11cSYuval Mintz cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type); 5570a7fb11cSYuval Mintz 5580a7fb11cSYuval Mintz switch (cqe->rx_cqe_sp.type) { 5590a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_SLOW_PATH: 5606f34a284SMichal Kalderon rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, 5616f34a284SMichal Kalderon cqe, &flags); 5620a7fb11cSYuval Mintz break; 563abd49676SRam Amrani case CORE_RX_CQE_TYPE_GSI_OFFLOAD: 5640a7fb11cSYuval Mintz case CORE_RX_CQE_TYPE_REGULAR: 56568be910cSMintz, Yuval rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn, 5661df2adedSRam Amrani cqe, &flags, 5671df2adedSRam Amrani b_last_cqe); 5680a7fb11cSYuval Mintz break; 5690a7fb11cSYuval Mintz default: 5700a7fb11cSYuval Mintz rc = -EIO; 5710a7fb11cSYuval Mintz } 5720a7fb11cSYuval Mintz } 5730a7fb11cSYuval Mintz 5740a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 5750a7fb11cSYuval Mintz return rc; 5760a7fb11cSYuval Mintz } 5770a7fb11cSYuval Mintz 5788c93beafSYuval Mintz static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) 5790a7fb11cSYuval Mintz { 5800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 5810a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 5820a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 5836291c608SMichal Kalderon unsigned long flags = 0; 5840a7fb11cSYuval Mintz 5850a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); 5860a7fb11cSYuval Mintz if (!p_ll2_conn) 5870a7fb11cSYuval Mintz return; 5880a7fb11cSYuval Mintz 5890a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 5900a7fb11cSYuval Mintz 5916291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 5920a7fb11cSYuval Mintz while (!list_empty(&p_rx->active_descq)) { 5930a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 5940a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 5950a7fb11cSYuval Mintz if (!p_pkt) 5960a7fb11cSYuval Mintz break; 597b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); 5986291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 5990a7fb11cSYuval Mintz 600526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) { 6011d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 6021d6cff4fSYuval Mintz 6031d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 6041d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 6051d6cff4fSYuval Mintz p_buffer); 6061d6cff4fSYuval Mintz } else { 60754f19f07SMintz, Yuval dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr; 60854f19f07SMintz, Yuval void *cookie = p_pkt->cookie; 60954f19f07SMintz, Yuval bool b_last; 6100a7fb11cSYuval Mintz 6110a7fb11cSYuval Mintz b_last = list_empty(&p_rx->active_descq); 61254f19f07SMintz, Yuval p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie, 61354f19f07SMintz, Yuval p_ll2_conn->my_id, 61454f19f07SMintz, Yuval cookie, 61554f19f07SMintz, Yuval rx_buf_addr, b_last); 6160a7fb11cSYuval Mintz } 6176291c608SMichal Kalderon spin_lock_irqsave(&p_rx->lock, flags); 6180a7fb11cSYuval Mintz } 6196291c608SMichal Kalderon spin_unlock_irqrestore(&p_rx->lock, flags); 6201d6cff4fSYuval Mintz } 6211d6cff4fSYuval Mintz 622974f6c04SMichal Kalderon static bool 623974f6c04SMichal Kalderon qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn, 624974f6c04SMichal Kalderon struct core_rx_slow_path_cqe *p_cqe) 625974f6c04SMichal Kalderon { 626*939a6567SShai Malin struct ooo_opaque *ooo_opq; 627974f6c04SMichal Kalderon u32 cid; 628974f6c04SMichal Kalderon 629974f6c04SMichal Kalderon if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) 630974f6c04SMichal Kalderon return false; 631974f6c04SMichal Kalderon 632*939a6567SShai Malin ooo_opq = (struct ooo_opaque *)&p_cqe->opaque_data; 633*939a6567SShai Malin if (ooo_opq->ooo_opcode != TCP_EVENT_DELETE_ISLES) 634974f6c04SMichal Kalderon return false; 635974f6c04SMichal Kalderon 636974f6c04SMichal Kalderon /* Need to make a flush */ 637*939a6567SShai Malin cid = le32_to_cpu(ooo_opq->cid); 638974f6c04SMichal Kalderon qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid); 639974f6c04SMichal Kalderon 640974f6c04SMichal Kalderon return true; 641974f6c04SMichal Kalderon } 642974f6c04SMichal Kalderon 6431d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, 6441d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 6451d6cff4fSYuval Mintz { 6461d6cff4fSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 6471d6cff4fSYuval Mintz u16 packet_length = 0, parse_flags = 0, vlan = 0; 6481d6cff4fSYuval Mintz struct qed_ll2_rx_packet *p_pkt = NULL; 6491d6cff4fSYuval Mintz u32 num_ooo_add_to_peninsula = 0, cid; 6501d6cff4fSYuval Mintz union core_rx_cqe_union *cqe = NULL; 6511d6cff4fSYuval Mintz u16 cq_new_idx = 0, cq_old_idx = 0; 6521d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 653*939a6567SShai Malin struct ooo_opaque *ooo_opq; 6541d6cff4fSYuval Mintz u8 placement_offset = 0; 6551d6cff4fSYuval Mintz u8 cqe_type; 6561d6cff4fSYuval Mintz 6571d6cff4fSYuval Mintz cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); 6581d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6591d6cff4fSYuval Mintz if (cq_new_idx == cq_old_idx) 6601d6cff4fSYuval Mintz return 0; 6611d6cff4fSYuval Mintz 6621d6cff4fSYuval Mintz while (cq_new_idx != cq_old_idx) { 6631d6cff4fSYuval Mintz struct core_rx_fast_path_cqe *p_cqe_fp; 6641d6cff4fSYuval Mintz 6651d6cff4fSYuval Mintz cqe = qed_chain_consume(&p_rx->rcq_chain); 6661d6cff4fSYuval Mintz cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); 6671d6cff4fSYuval Mintz cqe_type = cqe->rx_cqe_sp.type; 6681d6cff4fSYuval Mintz 669974f6c04SMichal Kalderon if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH) 670974f6c04SMichal Kalderon if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn, 671974f6c04SMichal Kalderon &cqe->rx_cqe_sp)) 672974f6c04SMichal Kalderon continue; 673974f6c04SMichal Kalderon 674891e861eSShai Malin if (unlikely(cqe_type != CORE_RX_CQE_TYPE_REGULAR)) { 6751d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 6761d6cff4fSYuval Mintz "Got a non-regular LB LL2 completion [type 0x%02x]\n", 6771d6cff4fSYuval Mintz cqe_type); 6781d6cff4fSYuval Mintz return -EINVAL; 6791d6cff4fSYuval Mintz } 6801d6cff4fSYuval Mintz p_cqe_fp = &cqe->rx_cqe_fp; 6811d6cff4fSYuval Mintz 6821d6cff4fSYuval Mintz placement_offset = p_cqe_fp->placement_offset; 6831d6cff4fSYuval Mintz parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); 6841d6cff4fSYuval Mintz packet_length = le16_to_cpu(p_cqe_fp->packet_length); 6851d6cff4fSYuval Mintz vlan = le16_to_cpu(p_cqe_fp->vlan); 686*939a6567SShai Malin ooo_opq = (struct ooo_opaque *)&p_cqe_fp->opaque_data; 687*939a6567SShai Malin qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, ooo_opq); 688*939a6567SShai Malin cid = le32_to_cpu(ooo_opq->cid); 6891d6cff4fSYuval Mintz 6901d6cff4fSYuval Mintz /* Process delete isle first */ 691*939a6567SShai Malin if (ooo_opq->drop_size) 6921d6cff4fSYuval Mintz qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, 693*939a6567SShai Malin ooo_opq->drop_isle, 694*939a6567SShai Malin ooo_opq->drop_size); 6951d6cff4fSYuval Mintz 696*939a6567SShai Malin if (ooo_opq->ooo_opcode == TCP_EVENT_NOP) 6971d6cff4fSYuval Mintz continue; 6981d6cff4fSYuval Mintz 6991d6cff4fSYuval Mintz /* Now process create/add/join isles */ 700891e861eSShai Malin if (unlikely(list_empty(&p_rx->active_descq))) { 7011d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7021d6cff4fSYuval Mintz "LL2 OOO RX chain has no submitted buffers\n" 7031d6cff4fSYuval Mintz ); 7041d6cff4fSYuval Mintz return -EIO; 7051d6cff4fSYuval Mintz } 7061d6cff4fSYuval Mintz 7071d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_rx->active_descq, 7081d6cff4fSYuval Mintz struct qed_ll2_rx_packet, list_entry); 7091d6cff4fSYuval Mintz 710*939a6567SShai Malin if (likely(ooo_opq->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE || 711*939a6567SShai Malin ooo_opq->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT || 712*939a6567SShai Malin ooo_opq->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT || 713*939a6567SShai Malin ooo_opq->ooo_opcode == TCP_EVENT_ADD_PEN || 714*939a6567SShai Malin ooo_opq->ooo_opcode == TCP_EVENT_JOIN)) { 715891e861eSShai Malin if (unlikely(!p_pkt)) { 7161d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7171d6cff4fSYuval Mintz "LL2 OOO RX packet is not valid\n"); 7181d6cff4fSYuval Mintz return -EIO; 7191d6cff4fSYuval Mintz } 7201d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 7211d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 7221d6cff4fSYuval Mintz p_buffer->packet_length = packet_length; 7231d6cff4fSYuval Mintz p_buffer->parse_flags = parse_flags; 7241d6cff4fSYuval Mintz p_buffer->vlan = vlan; 7251d6cff4fSYuval Mintz p_buffer->placement_offset = placement_offset; 7261d6cff4fSYuval Mintz qed_chain_consume(&p_rx->rxq_chain); 7271d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); 7281d6cff4fSYuval Mintz 729*939a6567SShai Malin switch (ooo_opq->ooo_opcode) { 7301d6cff4fSYuval Mintz case TCP_EVENT_ADD_NEW_ISLE: 7311d6cff4fSYuval Mintz qed_ooo_add_new_isle(p_hwfn, 7321d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7331d6cff4fSYuval Mintz cid, 734*939a6567SShai Malin ooo_opq->ooo_isle, 7351d6cff4fSYuval Mintz p_buffer); 7361d6cff4fSYuval Mintz break; 7371d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_RIGHT: 7381d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7391d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7401d6cff4fSYuval Mintz cid, 741*939a6567SShai Malin ooo_opq->ooo_isle, 7421d6cff4fSYuval Mintz p_buffer, 7431d6cff4fSYuval Mintz QED_OOO_RIGHT_BUF); 7441d6cff4fSYuval Mintz break; 7451d6cff4fSYuval Mintz case TCP_EVENT_ADD_ISLE_LEFT: 7461d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7471d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7481d6cff4fSYuval Mintz cid, 749*939a6567SShai Malin ooo_opq->ooo_isle, 7501d6cff4fSYuval Mintz p_buffer, 7511d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7521d6cff4fSYuval Mintz break; 7531d6cff4fSYuval Mintz case TCP_EVENT_JOIN: 7541d6cff4fSYuval Mintz qed_ooo_add_new_buffer(p_hwfn, 7551d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7561d6cff4fSYuval Mintz cid, 757*939a6567SShai Malin ooo_opq->ooo_isle + 1, 7581d6cff4fSYuval Mintz p_buffer, 7591d6cff4fSYuval Mintz QED_OOO_LEFT_BUF); 7601d6cff4fSYuval Mintz qed_ooo_join_isles(p_hwfn, 7611d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 762*939a6567SShai Malin cid, ooo_opq->ooo_isle); 7631d6cff4fSYuval Mintz break; 7641d6cff4fSYuval Mintz case TCP_EVENT_ADD_PEN: 7651d6cff4fSYuval Mintz num_ooo_add_to_peninsula++; 7661d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, 7671d6cff4fSYuval Mintz p_hwfn->p_ooo_info, 7681d6cff4fSYuval Mintz p_buffer, true); 7691d6cff4fSYuval Mintz break; 7701d6cff4fSYuval Mintz } 7711d6cff4fSYuval Mintz } else { 7721d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 7731d6cff4fSYuval Mintz "Unexpected event (%d) TX OOO completion\n", 774*939a6567SShai Malin ooo_opq->ooo_opcode); 7751d6cff4fSYuval Mintz } 7761d6cff4fSYuval Mintz } 7771d6cff4fSYuval Mintz 7781d6cff4fSYuval Mintz return 0; 7791d6cff4fSYuval Mintz } 7801d6cff4fSYuval Mintz 7811d6cff4fSYuval Mintz static void 7821d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, 7831d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 7841d6cff4fSYuval Mintz { 7857c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info tx_pkt; 7861d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 7871d6cff4fSYuval Mintz u16 l4_hdr_offset_w; 7881d6cff4fSYuval Mintz dma_addr_t first_frag; 7891d6cff4fSYuval Mintz u8 bd_flags; 7907c7973b2SMintz, Yuval int rc; 7911d6cff4fSYuval Mintz 7921d6cff4fSYuval Mintz /* Submit Tx buffers here */ 7931d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, 7941d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 7951d6cff4fSYuval Mintz l4_hdr_offset_w = 0; 7961d6cff4fSYuval Mintz bd_flags = 0; 7971d6cff4fSYuval Mintz 7981d6cff4fSYuval Mintz first_frag = p_buffer->rx_buffer_phys_addr + 7991d6cff4fSYuval Mintz p_buffer->placement_offset; 800be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1); 801be086e7cSMintz, Yuval SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1); 8021d6cff4fSYuval Mintz 8037c7973b2SMintz, Yuval memset(&tx_pkt, 0, sizeof(tx_pkt)); 8047c7973b2SMintz, Yuval tx_pkt.num_of_bds = 1; 8057c7973b2SMintz, Yuval tx_pkt.vlan = p_buffer->vlan; 8067c7973b2SMintz, Yuval tx_pkt.bd_flags = bd_flags; 8077c7973b2SMintz, Yuval tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w; 8088fa74e3cSNathan Chancellor switch (p_ll2_conn->tx_dest) { 8098fa74e3cSNathan Chancellor case CORE_TX_DEST_NW: 8108fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_NW; 8118fa74e3cSNathan Chancellor break; 8128fa74e3cSNathan Chancellor case CORE_TX_DEST_LB: 8138fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 8148fa74e3cSNathan Chancellor break; 8158fa74e3cSNathan Chancellor case CORE_TX_DEST_DROP: 8168fa74e3cSNathan Chancellor default: 8178fa74e3cSNathan Chancellor tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 8188fa74e3cSNathan Chancellor break; 8198fa74e3cSNathan Chancellor } 8207c7973b2SMintz, Yuval tx_pkt.first_frag = first_frag; 8217c7973b2SMintz, Yuval tx_pkt.first_frag_len = p_buffer->packet_length; 8227c7973b2SMintz, Yuval tx_pkt.cookie = p_buffer; 8237c7973b2SMintz, Yuval 8247c7973b2SMintz, Yuval rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 8257c7973b2SMintz, Yuval &tx_pkt, true); 8261d6cff4fSYuval Mintz if (rc) { 8271d6cff4fSYuval Mintz qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, 8281d6cff4fSYuval Mintz p_buffer, false); 8291d6cff4fSYuval Mintz break; 8301d6cff4fSYuval Mintz } 8311d6cff4fSYuval Mintz } 8321d6cff4fSYuval Mintz } 8331d6cff4fSYuval Mintz 8341d6cff4fSYuval Mintz static void 8351d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, 8361d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn) 8371d6cff4fSYuval Mintz { 8381d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8391d6cff4fSYuval Mintz int rc; 8401d6cff4fSYuval Mintz 8411d6cff4fSYuval Mintz while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 8421d6cff4fSYuval Mintz p_hwfn->p_ooo_info))) { 8431d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, 8441d6cff4fSYuval Mintz p_ll2_conn->my_id, 8451d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 8461d6cff4fSYuval Mintz 0, p_buffer, true); 8471d6cff4fSYuval Mintz if (rc) { 8481d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 8491d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 8501d6cff4fSYuval Mintz break; 8511d6cff4fSYuval Mintz } 8521d6cff4fSYuval Mintz } 8531d6cff4fSYuval Mintz } 8541d6cff4fSYuval Mintz 8551d6cff4fSYuval Mintz static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8561d6cff4fSYuval Mintz { 8571d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8581d6cff4fSYuval Mintz int rc; 8591d6cff4fSYuval Mintz 86037110237SShai Malin if (!p_ll2_conn) 86137110237SShai Malin return 0; 86237110237SShai Malin 863fc16f56bSMichal Kalderon if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 864fc16f56bSMichal Kalderon return 0; 865fc16f56bSMichal Kalderon 8661d6cff4fSYuval Mintz rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); 8671d6cff4fSYuval Mintz if (rc) 8681d6cff4fSYuval Mintz return rc; 8691d6cff4fSYuval Mintz 8701d6cff4fSYuval Mintz qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 8711d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 8721d6cff4fSYuval Mintz 8731d6cff4fSYuval Mintz return 0; 8741d6cff4fSYuval Mintz } 8751d6cff4fSYuval Mintz 8761d6cff4fSYuval Mintz static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) 8771d6cff4fSYuval Mintz { 8781d6cff4fSYuval Mintz struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; 8791d6cff4fSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 8801d6cff4fSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 8811d6cff4fSYuval Mintz struct qed_ooo_buffer *p_buffer; 8821d6cff4fSYuval Mintz bool b_dont_submit_rx = false; 8831d6cff4fSYuval Mintz u16 new_idx = 0, num_bds = 0; 8841d6cff4fSYuval Mintz int rc; 8851d6cff4fSYuval Mintz 886891e861eSShai Malin if (unlikely(!p_ll2_conn)) 88737110237SShai Malin return 0; 88837110237SShai Malin 889891e861eSShai Malin if (unlikely(!QED_LL2_TX_REGISTERED(p_ll2_conn))) 890fc16f56bSMichal Kalderon return 0; 891fc16f56bSMichal Kalderon 8921d6cff4fSYuval Mintz new_idx = le16_to_cpu(*p_tx->p_fw_cons); 8931d6cff4fSYuval Mintz num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); 8941d6cff4fSYuval Mintz 895891e861eSShai Malin if (unlikely(!num_bds)) 8961d6cff4fSYuval Mintz return 0; 8971d6cff4fSYuval Mintz 8981d6cff4fSYuval Mintz while (num_bds) { 8991d6cff4fSYuval Mintz if (list_empty(&p_tx->active_descq)) 9001d6cff4fSYuval Mintz return -EINVAL; 9011d6cff4fSYuval Mintz 9021d6cff4fSYuval Mintz p_pkt = list_first_entry(&p_tx->active_descq, 9031d6cff4fSYuval Mintz struct qed_ll2_tx_packet, list_entry); 904891e861eSShai Malin if (unlikely(!p_pkt)) 9051d6cff4fSYuval Mintz return -EINVAL; 9061d6cff4fSYuval Mintz 907891e861eSShai Malin if (unlikely(p_pkt->bd_used != 1)) { 9081d6cff4fSYuval Mintz DP_NOTICE(p_hwfn, 9091d6cff4fSYuval Mintz "Unexpectedly many BDs(%d) in TX OOO completion\n", 9101d6cff4fSYuval Mintz p_pkt->bd_used); 9111d6cff4fSYuval Mintz return -EINVAL; 9121d6cff4fSYuval Mintz } 9131d6cff4fSYuval Mintz 9141d6cff4fSYuval Mintz list_del(&p_pkt->list_entry); 9151d6cff4fSYuval Mintz 9161d6cff4fSYuval Mintz num_bds--; 9171d6cff4fSYuval Mintz p_tx->bds_idx++; 9181d6cff4fSYuval Mintz qed_chain_consume(&p_tx->txq_chain); 9191d6cff4fSYuval Mintz 9201d6cff4fSYuval Mintz p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; 9211d6cff4fSYuval Mintz list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 9221d6cff4fSYuval Mintz 9231d6cff4fSYuval Mintz if (b_dont_submit_rx) { 9241d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, 9251d6cff4fSYuval Mintz p_buffer); 9261d6cff4fSYuval Mintz continue; 9271d6cff4fSYuval Mintz } 9281d6cff4fSYuval Mintz 9291d6cff4fSYuval Mintz rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, 9301d6cff4fSYuval Mintz p_buffer->rx_buffer_phys_addr, 0, 9311d6cff4fSYuval Mintz p_buffer, true); 9321d6cff4fSYuval Mintz if (rc != 0) { 9331d6cff4fSYuval Mintz qed_ooo_put_free_buffer(p_hwfn, 9341d6cff4fSYuval Mintz p_hwfn->p_ooo_info, p_buffer); 9351d6cff4fSYuval Mintz b_dont_submit_rx = true; 9361d6cff4fSYuval Mintz } 9371d6cff4fSYuval Mintz } 9381d6cff4fSYuval Mintz 9391d6cff4fSYuval Mintz qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); 9401d6cff4fSYuval Mintz 9411d6cff4fSYuval Mintz return 0; 9421d6cff4fSYuval Mintz } 9431d6cff4fSYuval Mintz 9447e50769cSMichal Kalderon static void qed_ll2_stop_ooo(struct qed_hwfn *p_hwfn) 9451d6cff4fSYuval Mintz { 9467e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 9471d6cff4fSYuval Mintz 9487e50769cSMichal Kalderon DP_VERBOSE(p_hwfn, (QED_MSG_STORAGE | QED_MSG_LL2), 9497e50769cSMichal Kalderon "Stopping LL2 OOO queue [%02x]\n", *handle); 9501d6cff4fSYuval Mintz 9517e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, *handle); 9527e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 9531d6cff4fSYuval Mintz *handle = QED_LL2_UNUSED_HANDLE; 9541d6cff4fSYuval Mintz } 9551d6cff4fSYuval Mintz 9560a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, 9570a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 9580a7fb11cSYuval Mintz u8 action_on_error) 9590a7fb11cSYuval Mintz { 96013c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 9610a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; 9620a7fb11cSYuval Mintz struct core_rx_start_ramrod_data *p_ramrod = NULL; 9630a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 9640a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 9650a7fb11cSYuval Mintz u16 cqe_pbl_size; 9660a7fb11cSYuval Mintz int rc = 0; 9670a7fb11cSYuval Mintz 9680a7fb11cSYuval Mintz /* Get SPQ entry */ 9690a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 9700a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 9710a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 9720a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 9730a7fb11cSYuval Mintz 9740a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 9750a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_START, 9760a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 9770a7fb11cSYuval Mintz if (rc) 9780a7fb11cSYuval Mintz return rc; 9790a7fb11cSYuval Mintz 9800a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_start; 981997af5dfSMichal Kalderon memset(p_ramrod, 0, sizeof(*p_ramrod)); 9820a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 9830a7fb11cSYuval Mintz p_ramrod->sb_index = p_rx->rx_sb_index; 9840a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 9850a7fb11cSYuval Mintz 98613c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 98713c54771SMintz, Yuval DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr); 9880a7fb11cSYuval Mintz cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); 9890a7fb11cSYuval Mintz p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); 9900a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, 9910a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_rx->rcq_chain)); 9920a7fb11cSYuval Mintz 99313c54771SMintz, Yuval p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; 994da090917STomer Tayar p_ramrod->inner_vlan_stripping_en = 995da090917STomer Tayar p_ll2_conn->input.rx_vlan_removal_en; 996cac6f691SSudarsana Reddy Kalluru 997cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 998cac6f691SSudarsana Reddy Kalluru p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) 999cac6f691SSudarsana Reddy Kalluru p_ramrod->report_outer_vlan = 1; 10000a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 1001ed468ebeSMichal Kalderon p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; 10020a7fb11cSYuval Mintz 10030bc5fe85SSudarsana Reddy Kalluru if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) && 10040bc5fe85SSudarsana Reddy Kalluru p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE && 1005897e87a1SShai Malin conn_type != QED_LL2_TYPE_IWARP && 1006897e87a1SShai Malin (!QED_IS_NVMETCP_PERSONALITY(p_hwfn))) { 10070a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 1; 10080a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 1; 10090a7fb11cSYuval Mintz } else { 10100a7fb11cSYuval Mintz p_ramrod->mf_si_bcast_accept_all = 0; 10110a7fb11cSYuval Mintz p_ramrod->mf_si_mcast_accept_all = 0; 10120a7fb11cSYuval Mintz } 10130a7fb11cSYuval Mintz 10140a7fb11cSYuval Mintz p_ramrod->action_on_error.error_type = action_on_error; 101513c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 1016997af5dfSMichal Kalderon p_ramrod->zero_prod_flg = 1; 1017997af5dfSMichal Kalderon 10180a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 10190a7fb11cSYuval Mintz } 10200a7fb11cSYuval Mintz 10210a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, 10220a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 10230a7fb11cSYuval Mintz { 102413c54771SMintz, Yuval enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type; 10250a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 10260a7fb11cSYuval Mintz struct core_tx_start_ramrod_data *p_ramrod = NULL; 10270a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 10280a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 10290a7fb11cSYuval Mintz u16 pq_id = 0, pbl_size; 10300a7fb11cSYuval Mintz int rc = -EINVAL; 10310a7fb11cSYuval Mintz 10320a7fb11cSYuval Mintz if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) 10330a7fb11cSYuval Mintz return 0; 10340a7fb11cSYuval Mintz 1035891e861eSShai Malin if (likely(p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO)) 10361d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 0; 10371d6cff4fSYuval Mintz else 10381d6cff4fSYuval Mintz p_ll2_conn->tx_stats_en = 1; 10391d6cff4fSYuval Mintz 10400a7fb11cSYuval Mintz /* Get SPQ entry */ 10410a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 10420a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 10430a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 10440a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 10450a7fb11cSYuval Mintz 10460a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 10470a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_START, 10480a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 10490a7fb11cSYuval Mintz if (rc) 10500a7fb11cSYuval Mintz return rc; 10510a7fb11cSYuval Mintz 10520a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_tx_queue_start; 10530a7fb11cSYuval Mintz 10540a7fb11cSYuval Mintz p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); 10550a7fb11cSYuval Mintz p_ramrod->sb_index = p_tx->tx_sb_index; 105613c54771SMintz, Yuval p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu); 10570a7fb11cSYuval Mintz p_ramrod->stats_en = p_ll2_conn->tx_stats_en; 10580a7fb11cSYuval Mintz p_ramrod->stats_id = p_ll2_conn->tx_stats_id; 10590a7fb11cSYuval Mintz 10600a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, 10610a7fb11cSYuval Mintz qed_chain_get_pbl_phys(&p_tx->txq_chain)); 10620a7fb11cSYuval Mintz pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); 10630a7fb11cSYuval Mintz p_ramrod->pbl_size = cpu_to_le16(pbl_size); 10640a7fb11cSYuval Mintz 106513c54771SMintz, Yuval switch (p_ll2_conn->input.tx_tc) { 1066526d1d05SKalderon, Michal case PURE_LB_TC: 1067b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); 1068b5a9ee7cSAriel Elior break; 1069526d1d05SKalderon, Michal case PKT_LB_TC: 1070b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO); 1071827d240aSColin Ian King break; 1072b5a9ee7cSAriel Elior default: 1073b5a9ee7cSAriel Elior pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 1074b5a9ee7cSAriel Elior break; 1075b5a9ee7cSAriel Elior } 1076b5a9ee7cSAriel Elior 10770a7fb11cSYuval Mintz p_ramrod->qm_pq_id = cpu_to_le16(pq_id); 10780a7fb11cSYuval Mintz 10790a7fb11cSYuval Mintz switch (conn_type) { 10801e128c81SArun Easi case QED_LL2_TYPE_FCOE: 10811e128c81SArun Easi p_ramrod->conn_type = PROTOCOLID_FCOE; 10821e128c81SArun Easi break; 10831bd4f571SOmkar Kulkarni case QED_LL2_TYPE_TCP_ULP: 10841bd4f571SOmkar Kulkarni p_ramrod->conn_type = PROTOCOLID_TCP_ULP; 10850a7fb11cSYuval Mintz break; 10860a7fb11cSYuval Mintz case QED_LL2_TYPE_ROCE: 10870a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ROCE; 10880a7fb11cSYuval Mintz break; 1089cc4ad324SKalderon, Michal case QED_LL2_TYPE_IWARP: 1090cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1091cc4ad324SKalderon, Michal break; 1092cc4ad324SKalderon, Michal case QED_LL2_TYPE_OOO: 1093897e87a1SShai Malin if (p_hwfn->hw_info.personality == QED_PCI_ISCSI || 1094897e87a1SShai Malin p_hwfn->hw_info.personality == QED_PCI_NVMETCP) 10951bd4f571SOmkar Kulkarni p_ramrod->conn_type = PROTOCOLID_TCP_ULP; 1096cc4ad324SKalderon, Michal else 1097cc4ad324SKalderon, Michal p_ramrod->conn_type = PROTOCOLID_IWARP; 1098cc4ad324SKalderon, Michal break; 10990a7fb11cSYuval Mintz default: 11000a7fb11cSYuval Mintz p_ramrod->conn_type = PROTOCOLID_ETH; 11010a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); 11020a7fb11cSYuval Mintz } 11030a7fb11cSYuval Mintz 110413c54771SMintz, Yuval p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; 110513c54771SMintz, Yuval 1106b78d5400SAriel Elior rc = qed_spq_post(p_hwfn, p_ent, NULL); 1107b78d5400SAriel Elior if (rc) 1108b78d5400SAriel Elior return rc; 1109b78d5400SAriel Elior 1110b78d5400SAriel Elior rc = qed_db_recovery_add(p_hwfn->cdev, p_tx->doorbell_addr, 1111b78d5400SAriel Elior &p_tx->db_msg, DB_REC_WIDTH_32B, 1112b78d5400SAriel Elior DB_REC_KERNEL); 1113b78d5400SAriel Elior return rc; 11140a7fb11cSYuval Mintz } 11150a7fb11cSYuval Mintz 11160a7fb11cSYuval Mintz static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, 11170a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11180a7fb11cSYuval Mintz { 11190a7fb11cSYuval Mintz struct core_rx_stop_ramrod_data *p_ramrod = NULL; 11200a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11210a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11220a7fb11cSYuval Mintz int rc = -EINVAL; 11230a7fb11cSYuval Mintz 11240a7fb11cSYuval Mintz /* Get SPQ entry */ 11250a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11260a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11270a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11280a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11290a7fb11cSYuval Mintz 11300a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11310a7fb11cSYuval Mintz CORE_RAMROD_RX_QUEUE_STOP, 11320a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11330a7fb11cSYuval Mintz if (rc) 11340a7fb11cSYuval Mintz return rc; 11350a7fb11cSYuval Mintz 11360a7fb11cSYuval Mintz p_ramrod = &p_ent->ramrod.core_rx_queue_stop; 11370a7fb11cSYuval Mintz 11380a7fb11cSYuval Mintz p_ramrod->complete_event_flg = 1; 11390a7fb11cSYuval Mintz p_ramrod->queue_id = p_ll2_conn->queue_id; 11400a7fb11cSYuval Mintz 11410a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11420a7fb11cSYuval Mintz } 11430a7fb11cSYuval Mintz 11440a7fb11cSYuval Mintz static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, 11450a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 11460a7fb11cSYuval Mintz { 1147b78d5400SAriel Elior struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 11480a7fb11cSYuval Mintz struct qed_spq_entry *p_ent = NULL; 11490a7fb11cSYuval Mintz struct qed_sp_init_data init_data; 11500a7fb11cSYuval Mintz int rc = -EINVAL; 1151ee824f4bSOmkar Kulkarni 1152b78d5400SAriel Elior qed_db_recovery_del(p_hwfn->cdev, p_tx->doorbell_addr, &p_tx->db_msg); 11530a7fb11cSYuval Mintz 11540a7fb11cSYuval Mintz /* Get SPQ entry */ 11550a7fb11cSYuval Mintz memset(&init_data, 0, sizeof(init_data)); 11560a7fb11cSYuval Mintz init_data.cid = p_ll2_conn->cid; 11570a7fb11cSYuval Mintz init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 11580a7fb11cSYuval Mintz init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 11590a7fb11cSYuval Mintz 11600a7fb11cSYuval Mintz rc = qed_sp_init_request(p_hwfn, &p_ent, 11610a7fb11cSYuval Mintz CORE_RAMROD_TX_QUEUE_STOP, 11620a7fb11cSYuval Mintz PROTOCOLID_CORE, &init_data); 11630a7fb11cSYuval Mintz if (rc) 11640a7fb11cSYuval Mintz return rc; 11650a7fb11cSYuval Mintz 11660a7fb11cSYuval Mintz return qed_spq_post(p_hwfn, p_ent, NULL); 11670a7fb11cSYuval Mintz } 11680a7fb11cSYuval Mintz 11690a7fb11cSYuval Mintz static int 11700a7fb11cSYuval Mintz qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, 117113c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 11720a7fb11cSYuval Mintz { 1173b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1174b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1175b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1176b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.rx_num_desc, 1177b6db3f71SAlexander Lobakin }; 1178b6db3f71SAlexander Lobakin struct qed_dev *cdev = p_hwfn->cdev; 11790a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_descq; 11800a7fb11cSYuval Mintz u32 capacity; 11810a7fb11cSYuval Mintz int rc = 0; 11820a7fb11cSYuval Mintz 118313c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_desc) 11840a7fb11cSYuval Mintz goto out; 11850a7fb11cSYuval Mintz 1186b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_NEXT_PTR; 1187b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_bd); 1188b6db3f71SAlexander Lobakin 1189b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rxq_chain, ¶ms); 11900a7fb11cSYuval Mintz if (rc) { 11910a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); 11920a7fb11cSYuval Mintz goto out; 11930a7fb11cSYuval Mintz } 11940a7fb11cSYuval Mintz 11950a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); 11960a7fb11cSYuval Mintz p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), 11970a7fb11cSYuval Mintz GFP_KERNEL); 11980a7fb11cSYuval Mintz if (!p_descq) { 11990a7fb11cSYuval Mintz rc = -ENOMEM; 12000a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); 12010a7fb11cSYuval Mintz goto out; 12020a7fb11cSYuval Mintz } 12030a7fb11cSYuval Mintz p_ll2_info->rx_queue.descq_array = p_descq; 12040a7fb11cSYuval Mintz 1205b6db3f71SAlexander Lobakin params.mode = QED_CHAIN_MODE_PBL; 1206b6db3f71SAlexander Lobakin params.elem_size = sizeof(struct core_rx_fast_path_cqe); 1207b6db3f71SAlexander Lobakin 1208b6db3f71SAlexander Lobakin rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rcq_chain, ¶ms); 12090a7fb11cSYuval Mintz if (rc) { 12100a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); 12110a7fb11cSYuval Mintz goto out; 12120a7fb11cSYuval Mintz } 12130a7fb11cSYuval Mintz 12140a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12150a7fb11cSYuval Mintz "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", 121613c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc); 12170a7fb11cSYuval Mintz 12180a7fb11cSYuval Mintz out: 12190a7fb11cSYuval Mintz return rc; 12200a7fb11cSYuval Mintz } 12210a7fb11cSYuval Mintz 12220a7fb11cSYuval Mintz static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, 122313c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info) 12240a7fb11cSYuval Mintz { 1225b6db3f71SAlexander Lobakin struct qed_chain_init_params params = { 1226b6db3f71SAlexander Lobakin .mode = QED_CHAIN_MODE_PBL, 1227b6db3f71SAlexander Lobakin .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1228b6db3f71SAlexander Lobakin .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1229b6db3f71SAlexander Lobakin .num_elems = p_ll2_info->input.tx_num_desc, 1230b6db3f71SAlexander Lobakin .elem_size = sizeof(struct core_tx_bd), 1231b6db3f71SAlexander Lobakin }; 12320a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_descq; 1233a93b6a2bSGustavo A. R. Silva size_t desc_size; 12340a7fb11cSYuval Mintz u32 capacity; 12350a7fb11cSYuval Mintz int rc = 0; 12360a7fb11cSYuval Mintz 123713c54771SMintz, Yuval if (!p_ll2_info->input.tx_num_desc) 12380a7fb11cSYuval Mintz goto out; 12390a7fb11cSYuval Mintz 1240b6db3f71SAlexander Lobakin rc = qed_chain_alloc(p_hwfn->cdev, &p_ll2_info->tx_queue.txq_chain, 1241b6db3f71SAlexander Lobakin ¶ms); 12420a7fb11cSYuval Mintz if (rc) 12430a7fb11cSYuval Mintz goto out; 12440a7fb11cSYuval Mintz 12450a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); 1246a93b6a2bSGustavo A. R. Silva /* All bds_set elements are flexibily added. */ 1247a93b6a2bSGustavo A. R. Silva desc_size = struct_size(p_descq, bds_set, 1248a93b6a2bSGustavo A. R. Silva p_ll2_info->input.tx_max_bds_per_packet); 1249f5823fe6SMichal Kalderon 1250f5823fe6SMichal Kalderon p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); 12510a7fb11cSYuval Mintz if (!p_descq) { 12520a7fb11cSYuval Mintz rc = -ENOMEM; 12530a7fb11cSYuval Mintz goto out; 12540a7fb11cSYuval Mintz } 1255f5823fe6SMichal Kalderon p_ll2_info->tx_queue.descq_mem = p_descq; 12560a7fb11cSYuval Mintz 12570a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_LL2, 12580a7fb11cSYuval Mintz "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", 125913c54771SMintz, Yuval p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc); 12600a7fb11cSYuval Mintz 12610a7fb11cSYuval Mintz out: 12620a7fb11cSYuval Mintz if (rc) 12630a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, 12640a7fb11cSYuval Mintz "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", 126513c54771SMintz, Yuval p_ll2_info->input.tx_num_desc); 12660a7fb11cSYuval Mintz return rc; 12670a7fb11cSYuval Mintz } 12680a7fb11cSYuval Mintz 126913c54771SMintz, Yuval static int 127013c54771SMintz, Yuval qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, 127113c54771SMintz, Yuval struct qed_ll2_info *p_ll2_info, u16 mtu) 127213c54771SMintz, Yuval { 127313c54771SMintz, Yuval struct qed_ooo_buffer *p_buf = NULL; 127413c54771SMintz, Yuval void *p_virt; 127513c54771SMintz, Yuval u16 buf_idx; 127613c54771SMintz, Yuval int rc = 0; 127713c54771SMintz, Yuval 1278526d1d05SKalderon, Michal if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO) 127913c54771SMintz, Yuval return rc; 128013c54771SMintz, Yuval 128113c54771SMintz, Yuval /* Correct number of requested OOO buffers if needed */ 128213c54771SMintz, Yuval if (!p_ll2_info->input.rx_num_ooo_buffers) { 128313c54771SMintz, Yuval u16 num_desc = p_ll2_info->input.rx_num_desc; 128413c54771SMintz, Yuval 128513c54771SMintz, Yuval if (!num_desc) 128613c54771SMintz, Yuval return -EINVAL; 128713c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2; 128813c54771SMintz, Yuval } 128913c54771SMintz, Yuval 129013c54771SMintz, Yuval for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers; 129113c54771SMintz, Yuval buf_idx++) { 129213c54771SMintz, Yuval p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); 129313c54771SMintz, Yuval if (!p_buf) { 129413c54771SMintz, Yuval rc = -ENOMEM; 129513c54771SMintz, Yuval goto out; 129613c54771SMintz, Yuval } 129713c54771SMintz, Yuval 129813c54771SMintz, Yuval p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; 129913c54771SMintz, Yuval p_buf->rx_buffer_size = (p_buf->rx_buffer_size + 130013c54771SMintz, Yuval ETH_CACHE_LINE_SIZE - 1) & 130113c54771SMintz, Yuval ~(ETH_CACHE_LINE_SIZE - 1); 130213c54771SMintz, Yuval p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 130313c54771SMintz, Yuval p_buf->rx_buffer_size, 130413c54771SMintz, Yuval &p_buf->rx_buffer_phys_addr, 130513c54771SMintz, Yuval GFP_KERNEL); 130613c54771SMintz, Yuval if (!p_virt) { 130713c54771SMintz, Yuval kfree(p_buf); 130813c54771SMintz, Yuval rc = -ENOMEM; 130913c54771SMintz, Yuval goto out; 131013c54771SMintz, Yuval } 131113c54771SMintz, Yuval 131213c54771SMintz, Yuval p_buf->rx_buffer_virt_addr = p_virt; 131313c54771SMintz, Yuval qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); 131413c54771SMintz, Yuval } 131513c54771SMintz, Yuval 131613c54771SMintz, Yuval DP_VERBOSE(p_hwfn, QED_MSG_LL2, 131713c54771SMintz, Yuval "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", 131813c54771SMintz, Yuval p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size); 131913c54771SMintz, Yuval 132013c54771SMintz, Yuval out: 132113c54771SMintz, Yuval return rc; 132213c54771SMintz, Yuval } 132313c54771SMintz, Yuval 13240518c12fSMichal Kalderon static int 13250518c12fSMichal Kalderon qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) 13260518c12fSMichal Kalderon { 13270518c12fSMichal Kalderon if (!cbs || (!cbs->rx_comp_cb || 13280518c12fSMichal Kalderon !cbs->rx_release_cb || 13290518c12fSMichal Kalderon !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie)) 13300518c12fSMichal Kalderon return -EINVAL; 13310518c12fSMichal Kalderon 13320518c12fSMichal Kalderon p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb; 13330518c12fSMichal Kalderon p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; 13340518c12fSMichal Kalderon p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; 13350518c12fSMichal Kalderon p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; 13366f34a284SMichal Kalderon p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; 13370518c12fSMichal Kalderon p_ll2_info->cbs.cookie = cbs->cookie; 13380518c12fSMichal Kalderon 13390518c12fSMichal Kalderon return 0; 13400518c12fSMichal Kalderon } 13410518c12fSMichal Kalderon 1342997af5dfSMichal Kalderon static void _qed_ll2_calc_allowed_conns(struct qed_hwfn *p_hwfn, 1343997af5dfSMichal Kalderon struct qed_ll2_acquire_data *data, 1344997af5dfSMichal Kalderon u8 *start_idx, u8 *last_idx) 1345997af5dfSMichal Kalderon { 1346997af5dfSMichal Kalderon /* LL2 queues handles will be split as follows: 1347997af5dfSMichal Kalderon * First will be the legacy queues, and then the ctx based. 1348997af5dfSMichal Kalderon */ 1349997af5dfSMichal Kalderon if (data->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1350997af5dfSMichal Kalderon *start_idx = QED_LL2_LEGACY_CONN_BASE_PF; 1351997af5dfSMichal Kalderon *last_idx = *start_idx + 1352997af5dfSMichal Kalderon QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF; 1353997af5dfSMichal Kalderon } else { 1354997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX */ 1355997af5dfSMichal Kalderon *start_idx = QED_LL2_CTX_CONN_BASE_PF; 1356997af5dfSMichal Kalderon *last_idx = *start_idx + 1357997af5dfSMichal Kalderon QED_MAX_NUM_OF_CTX_LL2_CONNS_PF; 1358997af5dfSMichal Kalderon } 1359997af5dfSMichal Kalderon } 1360997af5dfSMichal Kalderon 136113c54771SMintz, Yuval static enum core_error_handle 136213c54771SMintz, Yuval qed_ll2_get_error_choice(enum qed_ll2_error_handle err) 136313c54771SMintz, Yuval { 136413c54771SMintz, Yuval switch (err) { 136513c54771SMintz, Yuval case QED_LL2_DROP_PACKET: 136613c54771SMintz, Yuval return LL2_DROP_PACKET; 136713c54771SMintz, Yuval case QED_LL2_DO_NOTHING: 136813c54771SMintz, Yuval return LL2_DO_NOTHING; 136913c54771SMintz, Yuval case QED_LL2_ASSERT: 137013c54771SMintz, Yuval return LL2_ASSERT; 137113c54771SMintz, Yuval default: 137213c54771SMintz, Yuval return LL2_DO_NOTHING; 137313c54771SMintz, Yuval } 137413c54771SMintz, Yuval } 137513c54771SMintz, Yuval 13760518c12fSMichal Kalderon int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) 13770a7fb11cSYuval Mintz { 13780518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 13790a7fb11cSYuval Mintz qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; 13800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_info = NULL; 1381997af5dfSMichal Kalderon u8 i, first_idx, last_idx, *p_tx_max; 13820a7fb11cSYuval Mintz int rc; 13830a7fb11cSYuval Mintz 138413c54771SMintz, Yuval if (!data->p_connection_handle || !p_hwfn->p_ll2_info) 13850a7fb11cSYuval Mintz return -EINVAL; 13860a7fb11cSYuval Mintz 1387997af5dfSMichal Kalderon _qed_ll2_calc_allowed_conns(p_hwfn, data, &first_idx, &last_idx); 1388997af5dfSMichal Kalderon 13890a7fb11cSYuval Mintz /* Find a free connection to be used */ 1390997af5dfSMichal Kalderon for (i = first_idx; i < last_idx; i++) { 13910a7fb11cSYuval Mintz mutex_lock(&p_hwfn->p_ll2_info[i].mutex); 13920a7fb11cSYuval Mintz if (p_hwfn->p_ll2_info[i].b_active) { 13930a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 13940a7fb11cSYuval Mintz continue; 13950a7fb11cSYuval Mintz } 13960a7fb11cSYuval Mintz 13970a7fb11cSYuval Mintz p_hwfn->p_ll2_info[i].b_active = true; 13980a7fb11cSYuval Mintz p_ll2_info = &p_hwfn->p_ll2_info[i]; 13990a7fb11cSYuval Mintz mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); 14000a7fb11cSYuval Mintz break; 14010a7fb11cSYuval Mintz } 14020a7fb11cSYuval Mintz if (!p_ll2_info) 14030a7fb11cSYuval Mintz return -EBUSY; 14040a7fb11cSYuval Mintz 140513c54771SMintz, Yuval memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input)); 14060a7fb11cSYuval Mintz 1407da090917STomer Tayar switch (data->input.tx_dest) { 1408da090917STomer Tayar case QED_LL2_TX_DEST_NW: 1409da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_NW; 1410da090917STomer Tayar break; 1411da090917STomer Tayar case QED_LL2_TX_DEST_LB: 1412da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_LB; 1413da090917STomer Tayar break; 1414da090917STomer Tayar case QED_LL2_TX_DEST_DROP: 1415da090917STomer Tayar p_ll2_info->tx_dest = CORE_TX_DEST_DROP; 1416da090917STomer Tayar break; 1417da090917STomer Tayar default: 1418da090917STomer Tayar return -EINVAL; 1419da090917STomer Tayar } 1420da090917STomer Tayar 1421ed468ebeSMichal Kalderon if (data->input.conn_type == QED_LL2_TYPE_OOO || 1422ed468ebeSMichal Kalderon data->input.secondary_queue) 1423ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = false; 1424ed468ebeSMichal Kalderon else 1425ed468ebeSMichal Kalderon p_ll2_info->main_func_queue = true; 142613c54771SMintz, Yuval 142713c54771SMintz, Yuval /* Correct maximum number of Tx BDs */ 142813c54771SMintz, Yuval p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; 142913c54771SMintz, Yuval if (*p_tx_max == 0) 143013c54771SMintz, Yuval *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET; 143113c54771SMintz, Yuval else 143213c54771SMintz, Yuval *p_tx_max = min_t(u8, *p_tx_max, 143313c54771SMintz, Yuval CORE_LL2_TX_MAX_BDS_PER_PACKET); 14340518c12fSMichal Kalderon 14350518c12fSMichal Kalderon rc = qed_ll2_set_cbs(p_ll2_info, data->cbs); 14360518c12fSMichal Kalderon if (rc) { 14370518c12fSMichal Kalderon DP_NOTICE(p_hwfn, "Invalid callback functions\n"); 14380518c12fSMichal Kalderon goto q_allocate_fail; 14390518c12fSMichal Kalderon } 14400518c12fSMichal Kalderon 144113c54771SMintz, Yuval rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info); 14420a7fb11cSYuval Mintz if (rc) 14430a7fb11cSYuval Mintz goto q_allocate_fail; 14440a7fb11cSYuval Mintz 144513c54771SMintz, Yuval rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info); 14460a7fb11cSYuval Mintz if (rc) 14470a7fb11cSYuval Mintz goto q_allocate_fail; 14480a7fb11cSYuval Mintz 14491d6cff4fSYuval Mintz rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, 145013c54771SMintz, Yuval data->input.mtu); 14511d6cff4fSYuval Mintz if (rc) 14521d6cff4fSYuval Mintz goto q_allocate_fail; 14531d6cff4fSYuval Mintz 14540a7fb11cSYuval Mintz /* Register callbacks for the Rx/Tx queues */ 1455526d1d05SKalderon, Michal if (data->input.conn_type == QED_LL2_TYPE_OOO) { 14561d6cff4fSYuval Mintz comp_rx_cb = qed_ll2_lb_rxq_completion; 14571d6cff4fSYuval Mintz comp_tx_cb = qed_ll2_lb_txq_completion; 14581d6cff4fSYuval Mintz } else { 14590a7fb11cSYuval Mintz comp_rx_cb = qed_ll2_rxq_completion; 14600a7fb11cSYuval Mintz comp_tx_cb = qed_ll2_txq_completion; 14611d6cff4fSYuval Mintz } 14620a7fb11cSYuval Mintz 146313c54771SMintz, Yuval if (data->input.rx_num_desc) { 14640a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, comp_rx_cb, 14650a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14660a7fb11cSYuval Mintz &p_ll2_info->rx_queue.rx_sb_index, 14670a7fb11cSYuval Mintz &p_ll2_info->rx_queue.p_fw_cons); 14686a42b512SColin Ian King p_ll2_info->rx_queue.b_cb_registered = true; 14690a7fb11cSYuval Mintz } 14700a7fb11cSYuval Mintz 147113c54771SMintz, Yuval if (data->input.tx_num_desc) { 14720a7fb11cSYuval Mintz qed_int_register_cb(p_hwfn, 14730a7fb11cSYuval Mintz comp_tx_cb, 14740a7fb11cSYuval Mintz &p_hwfn->p_ll2_info[i], 14750a7fb11cSYuval Mintz &p_ll2_info->tx_queue.tx_sb_index, 14760a7fb11cSYuval Mintz &p_ll2_info->tx_queue.p_fw_cons); 14776a42b512SColin Ian King p_ll2_info->tx_queue.b_cb_registered = true; 14780a7fb11cSYuval Mintz } 14790a7fb11cSYuval Mintz 148013c54771SMintz, Yuval *data->p_connection_handle = i; 14810a7fb11cSYuval Mintz return rc; 14820a7fb11cSYuval Mintz 14830a7fb11cSYuval Mintz q_allocate_fail: 14840a7fb11cSYuval Mintz qed_ll2_release_connection(p_hwfn, i); 14850a7fb11cSYuval Mintz return -ENOMEM; 14860a7fb11cSYuval Mintz } 14870a7fb11cSYuval Mintz 14880a7fb11cSYuval Mintz static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, 14890a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 14900a7fb11cSYuval Mintz { 149113c54771SMintz, Yuval enum qed_ll2_error_handle error_input; 149213c54771SMintz, Yuval enum core_error_handle error_mode; 14930a7fb11cSYuval Mintz u8 action_on_error = 0; 1494997af5dfSMichal Kalderon int rc; 14950a7fb11cSYuval Mintz 14960a7fb11cSYuval Mintz if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) 14970a7fb11cSYuval Mintz return 0; 14980a7fb11cSYuval Mintz 14990a7fb11cSYuval Mintz DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); 150013c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_packet_too_big; 150113c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 15020a7fb11cSYuval Mintz SET_FIELD(action_on_error, 150313c54771SMintz, Yuval CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode); 150413c54771SMintz, Yuval error_input = p_ll2_conn->input.ai_err_no_buf; 150513c54771SMintz, Yuval error_mode = qed_ll2_get_error_choice(error_input); 150613c54771SMintz, Yuval SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode); 15070a7fb11cSYuval Mintz 1508997af5dfSMichal Kalderon rc = qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); 1509997af5dfSMichal Kalderon if (rc) 1510997af5dfSMichal Kalderon return rc; 1511997af5dfSMichal Kalderon 1512997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) { 1513997af5dfSMichal Kalderon rc = qed_db_recovery_add(p_hwfn->cdev, 1514997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 1515997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data, 1516997af5dfSMichal Kalderon DB_REC_WIDTH_64B, DB_REC_KERNEL); 1517997af5dfSMichal Kalderon } 1518997af5dfSMichal Kalderon 1519997af5dfSMichal Kalderon return rc; 15200a7fb11cSYuval Mintz } 15210a7fb11cSYuval Mintz 152258de2898SMintz, Yuval static void 152358de2898SMintz, Yuval qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, 152458de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 152558de2898SMintz, Yuval { 1526526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 152758de2898SMintz, Yuval return; 152858de2898SMintz, Yuval 152958de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 153058de2898SMintz, Yuval qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); 153158de2898SMintz, Yuval } 15320518c12fSMichal Kalderon 1533997af5dfSMichal Kalderon static inline u8 qed_ll2_handle_to_queue_id(struct qed_hwfn *p_hwfn, 1534997af5dfSMichal Kalderon u8 handle, 1535997af5dfSMichal Kalderon u8 ll2_queue_type) 1536997af5dfSMichal Kalderon { 1537997af5dfSMichal Kalderon u8 qid; 1538997af5dfSMichal Kalderon 1539997af5dfSMichal Kalderon if (ll2_queue_type == QED_LL2_RX_TYPE_LEGACY) 1540997af5dfSMichal Kalderon return p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + handle; 1541997af5dfSMichal Kalderon 1542997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX 1543997af5dfSMichal Kalderon * FW distinguishes between the legacy queues (ram based) and the 1544997af5dfSMichal Kalderon * ctx based queues by the queue_id. 1545997af5dfSMichal Kalderon * The first MAX_NUM_LL2_RX_RAM_QUEUES queues are legacy 1546997af5dfSMichal Kalderon * and the queue ids above that are ctx base. 1547997af5dfSMichal Kalderon */ 1548997af5dfSMichal Kalderon qid = p_hwfn->hw_info.resc_start[QED_LL2_CTX_QUEUE] + 1549997af5dfSMichal Kalderon MAX_NUM_LL2_RX_RAM_QUEUES; 1550997af5dfSMichal Kalderon 1551997af5dfSMichal Kalderon /* See comment on the acquire connection for how the ll2 1552997af5dfSMichal Kalderon * queues handles are divided. 1553997af5dfSMichal Kalderon */ 1554997af5dfSMichal Kalderon qid += (handle - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF); 1555997af5dfSMichal Kalderon 1556997af5dfSMichal Kalderon return qid; 1557997af5dfSMichal Kalderon } 1558997af5dfSMichal Kalderon 15590518c12fSMichal Kalderon int qed_ll2_establish_connection(void *cxt, u8 connection_handle) 15600a7fb11cSYuval Mintz { 1561fb09a1edSShai Malin struct core_conn_context *p_cxt; 1562f5823fe6SMichal Kalderon struct qed_ll2_tx_packet *p_pkt; 1563997af5dfSMichal Kalderon struct qed_ll2_info *p_ll2_conn; 1564997af5dfSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 15650a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 15660a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 1567997af5dfSMichal Kalderon struct qed_cxt_info cxt_info; 156815582962SRahul Verma struct qed_ptt *p_ptt; 15690a7fb11cSYuval Mintz int rc = -EINVAL; 15700a7fb11cSYuval Mintz u32 i, capacity; 1571a93b6a2bSGustavo A. R. Silva size_t desc_size; 157217696cadSManish Chopra u8 qid, stats_id; 15730a7fb11cSYuval Mintz 157415582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 157515582962SRahul Verma if (!p_ptt) 157615582962SRahul Verma return -EAGAIN; 157715582962SRahul Verma 15780a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 157915582962SRahul Verma if (!p_ll2_conn) { 158015582962SRahul Verma rc = -EINVAL; 158115582962SRahul Verma goto out; 158215582962SRahul Verma } 158315582962SRahul Verma 15840a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 15850a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 15860a7fb11cSYuval Mintz 15870a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rxq_chain); 15880a7fb11cSYuval Mintz qed_chain_reset(&p_rx->rcq_chain); 15890a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->active_descq); 15900a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->free_descq); 15910a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_rx->posting_descq); 15920a7fb11cSYuval Mintz spin_lock_init(&p_rx->lock); 15930a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_rx->rxq_chain); 15940a7fb11cSYuval Mintz for (i = 0; i < capacity; i++) 15950a7fb11cSYuval Mintz list_add_tail(&p_rx->descq_array[i].list_entry, 15960a7fb11cSYuval Mintz &p_rx->free_descq); 15970a7fb11cSYuval Mintz *p_rx->p_fw_cons = 0; 15980a7fb11cSYuval Mintz 15990a7fb11cSYuval Mintz qed_chain_reset(&p_tx->txq_chain); 16000a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->active_descq); 16010a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->free_descq); 16020a7fb11cSYuval Mintz INIT_LIST_HEAD(&p_tx->sending_descq); 16030a7fb11cSYuval Mintz spin_lock_init(&p_tx->lock); 16040a7fb11cSYuval Mintz capacity = qed_chain_get_capacity(&p_tx->txq_chain); 1605a93b6a2bSGustavo A. R. Silva /* All bds_set elements are flexibily added. */ 1606a93b6a2bSGustavo A. R. Silva desc_size = struct_size(p_pkt, bds_set, 1607a93b6a2bSGustavo A. R. Silva p_ll2_conn->input.tx_max_bds_per_packet); 1608f5823fe6SMichal Kalderon 1609f5823fe6SMichal Kalderon for (i = 0; i < capacity; i++) { 1610f5823fe6SMichal Kalderon p_pkt = p_tx->descq_mem + desc_size * i; 1611f5823fe6SMichal Kalderon list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); 1612f5823fe6SMichal Kalderon } 16130a7fb11cSYuval Mintz p_tx->cur_completing_bd_idx = 0; 16140a7fb11cSYuval Mintz p_tx->bds_idx = 0; 16150a7fb11cSYuval Mintz p_tx->b_completing_packet = false; 16160a7fb11cSYuval Mintz p_tx->cur_send_packet = NULL; 16170a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 16180a7fb11cSYuval Mintz p_tx->cur_completing_frag_num = 0; 16190a7fb11cSYuval Mintz *p_tx->p_fw_cons = 0; 16200a7fb11cSYuval Mintz 162115582962SRahul Verma rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); 162215582962SRahul Verma if (rc) 162315582962SRahul Verma goto out; 1624997af5dfSMichal Kalderon cxt_info.iid = p_ll2_conn->cid; 1625997af5dfSMichal Kalderon rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info); 1626997af5dfSMichal Kalderon if (rc) { 1627997af5dfSMichal Kalderon DP_NOTICE(p_hwfn, "Cannot find context info for cid=%d\n", 1628997af5dfSMichal Kalderon p_ll2_conn->cid); 1629997af5dfSMichal Kalderon goto out; 1630997af5dfSMichal Kalderon } 16310a7fb11cSYuval Mintz 1632997af5dfSMichal Kalderon p_cxt = cxt_info.p_cxt; 1633997af5dfSMichal Kalderon 1634997af5dfSMichal Kalderon memset(p_cxt, 0, sizeof(*p_cxt)); 1635997af5dfSMichal Kalderon 1636997af5dfSMichal Kalderon qid = qed_ll2_handle_to_queue_id(p_hwfn, connection_handle, 1637997af5dfSMichal Kalderon p_ll2_conn->input.rx_conn_type); 163817696cadSManish Chopra stats_id = qed_ll2_handle_to_stats_id(p_hwfn, 163917696cadSManish Chopra p_ll2_conn->input.rx_conn_type, 164017696cadSManish Chopra qid); 16410a7fb11cSYuval Mintz p_ll2_conn->queue_id = qid; 164217696cadSManish Chopra p_ll2_conn->tx_stats_id = stats_id; 1643997af5dfSMichal Kalderon 164417696cadSManish Chopra /* If there is no valid stats id for this connection, disable stats */ 164517696cadSManish Chopra if (p_ll2_conn->tx_stats_id == QED_LL2_INVALID_STATS_ID) { 164617696cadSManish Chopra p_ll2_conn->tx_stats_en = 0; 164717696cadSManish Chopra DP_VERBOSE(p_hwfn, 164817696cadSManish Chopra QED_MSG_LL2, 164917696cadSManish Chopra "Disabling stats for queue %d - not enough counters\n", 165017696cadSManish Chopra qid); 165117696cadSManish Chopra } 165217696cadSManish Chopra 165317696cadSManish Chopra DP_VERBOSE(p_hwfn, 165417696cadSManish Chopra QED_MSG_LL2, 16559cbfc51aSColin Ian King "Establishing ll2 queue. PF %d ctx_based=%d abs qid=%d stats_id=%d\n", 165617696cadSManish Chopra p_hwfn->rel_pf_id, 165717696cadSManish Chopra p_ll2_conn->input.rx_conn_type, qid, stats_id); 1658997af5dfSMichal Kalderon 1659997af5dfSMichal Kalderon if (p_ll2_conn->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) { 1660e2dbc223SPrabhakar Kushwaha p_rx->set_prod_addr = 1661e2dbc223SPrabhakar Kushwaha (u8 __iomem *)p_hwfn->regview + 1662e2dbc223SPrabhakar Kushwaha GET_GTT_REG_ADDR(GTT_BAR0_MAP_REG_TSDM_RAM, 1663e2dbc223SPrabhakar Kushwaha TSTORM_LL2_RX_PRODS, qid); 1664997af5dfSMichal Kalderon } else { 1665997af5dfSMichal Kalderon /* QED_LL2_RX_TYPE_CTX - using doorbell */ 1666997af5dfSMichal Kalderon p_rx->ctx_based = 1; 1667997af5dfSMichal Kalderon 1668997af5dfSMichal Kalderon p_rx->set_prod_addr = p_hwfn->doorbells + 1669997af5dfSMichal Kalderon p_hwfn->dpi_start_offset + 1670997af5dfSMichal Kalderon DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_LL2_PROD_UPDATE); 1671997af5dfSMichal Kalderon 1672997af5dfSMichal Kalderon /* prepare db data */ 1673997af5dfSMichal Kalderon p_rx->db_data.icid = cpu_to_le16((u16)p_ll2_conn->cid); 1674997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1675997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_AGG_CMD, DB_AGG_CMD_SET); 1676997af5dfSMichal Kalderon SET_FIELD(p_rx->db_data.params, 1677997af5dfSMichal Kalderon CORE_PWM_PROD_UPDATE_DATA_RESERVED1, 0); 1678997af5dfSMichal Kalderon } 1679997af5dfSMichal Kalderon 16800a7fb11cSYuval Mintz p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + 16810a7fb11cSYuval Mintz qed_db_addr(p_ll2_conn->cid, 16820a7fb11cSYuval Mintz DQ_DEMS_LEGACY); 1683b78d5400SAriel Elior /* prepare db data */ 1684b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 1685b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 1686b78d5400SAriel Elior SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, 1687b78d5400SAriel Elior DQ_XCM_CORE_TX_BD_PROD_CMD); 1688b78d5400SAriel Elior p_tx->db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 1689b78d5400SAriel Elior 16900a7fb11cSYuval Mintz rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); 16910a7fb11cSYuval Mintz if (rc) 169215582962SRahul Verma goto out; 16930a7fb11cSYuval Mintz 16940a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); 16950a7fb11cSYuval Mintz if (rc) 169615582962SRahul Verma goto out; 16970a7fb11cSYuval Mintz 1698897e87a1SShai Malin if (!QED_IS_RDMA_PERSONALITY(p_hwfn) && 1699897e87a1SShai Malin !QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 170015582962SRahul Verma qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1); 17010a7fb11cSYuval Mintz 17021d6cff4fSYuval Mintz qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); 17031d6cff4fSYuval Mintz 170413c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 1705cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 170679284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 170779284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 170879284adeSMichal Kalderon ETH_P_FCOE, 0); 170979284adeSMichal Kalderon qed_llh_add_protocol_filter(p_hwfn->cdev, 0, 171079284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 171179284adeSMichal Kalderon ETH_P_FIP, 0); 17121e128c81SArun Easi } 17131e128c81SArun Easi 171415582962SRahul Verma out: 171515582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 17160a7fb11cSYuval Mintz return rc; 17170a7fb11cSYuval Mintz } 17180a7fb11cSYuval Mintz 17190a7fb11cSYuval Mintz static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, 17200a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx, 17210a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp) 17220a7fb11cSYuval Mintz { 17230a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_posting_packet = NULL; 1724997af5dfSMichal Kalderon struct core_ll2_rx_prod rx_prod = { 0, 0 }; 17250a7fb11cSYuval Mintz bool b_notify_fw = false; 17260a7fb11cSYuval Mintz u16 bd_prod, cq_prod; 17270a7fb11cSYuval Mintz 17280a7fb11cSYuval Mintz /* This handles the flushing of already posted buffers */ 17290a7fb11cSYuval Mintz while (!list_empty(&p_rx->posting_descq)) { 17300a7fb11cSYuval Mintz p_posting_packet = list_first_entry(&p_rx->posting_descq, 17310a7fb11cSYuval Mintz struct qed_ll2_rx_packet, 17320a7fb11cSYuval Mintz list_entry); 1733b4f0fd4bSWei Yongjun list_move_tail(&p_posting_packet->list_entry, 17340a7fb11cSYuval Mintz &p_rx->active_descq); 17350a7fb11cSYuval Mintz b_notify_fw = true; 17360a7fb11cSYuval Mintz } 17370a7fb11cSYuval Mintz 17380a7fb11cSYuval Mintz /* This handles the supplied packet [if there is one] */ 17390a7fb11cSYuval Mintz if (p_curp) { 17400a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->active_descq); 17410a7fb11cSYuval Mintz b_notify_fw = true; 17420a7fb11cSYuval Mintz } 17430a7fb11cSYuval Mintz 17440a7fb11cSYuval Mintz if (!b_notify_fw) 17450a7fb11cSYuval Mintz return; 17460a7fb11cSYuval Mintz 17470a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); 17480a7fb11cSYuval Mintz cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); 1749997af5dfSMichal Kalderon if (p_rx->ctx_based) { 1750997af5dfSMichal Kalderon /* update producer by giving a doorbell */ 1751997af5dfSMichal Kalderon p_rx->db_data.prod.bd_prod = cpu_to_le16(bd_prod); 1752997af5dfSMichal Kalderon p_rx->db_data.prod.cqe_prod = cpu_to_le16(cq_prod); 1753997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1754997af5dfSMichal Kalderon * doorbell 1755997af5dfSMichal Kalderon */ 1756997af5dfSMichal Kalderon dma_wmb(); 1757997af5dfSMichal Kalderon DIRECT_REG_WR64(p_rx->set_prod_addr, 1758997af5dfSMichal Kalderon *((u64 *)&p_rx->db_data)); 1759997af5dfSMichal Kalderon } else { 17600a7fb11cSYuval Mintz rx_prod.bd_prod = cpu_to_le16(bd_prod); 17610a7fb11cSYuval Mintz rx_prod.cqe_prod = cpu_to_le16(cq_prod); 176246721c3dSDenis Bolotin 1763997af5dfSMichal Kalderon /* Make sure chain element is updated before ringing the 1764997af5dfSMichal Kalderon * doorbell 1765997af5dfSMichal Kalderon */ 176646721c3dSDenis Bolotin dma_wmb(); 176746721c3dSDenis Bolotin 17680a7fb11cSYuval Mintz DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); 17690a7fb11cSYuval Mintz } 1770997af5dfSMichal Kalderon } 17710a7fb11cSYuval Mintz 17720518c12fSMichal Kalderon int qed_ll2_post_rx_buffer(void *cxt, 17730a7fb11cSYuval Mintz u8 connection_handle, 17740a7fb11cSYuval Mintz dma_addr_t addr, 17750a7fb11cSYuval Mintz u16 buf_len, void *cookie, u8 notify_fw) 17760a7fb11cSYuval Mintz { 17770518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 17780a7fb11cSYuval Mintz struct core_rx_bd_with_buff_len *p_curb = NULL; 17790a7fb11cSYuval Mintz struct qed_ll2_rx_packet *p_curp = NULL; 17800a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn; 17810a7fb11cSYuval Mintz struct qed_ll2_rx_queue *p_rx; 17820a7fb11cSYuval Mintz unsigned long flags; 17830a7fb11cSYuval Mintz void *p_data; 17840a7fb11cSYuval Mintz int rc = 0; 17850a7fb11cSYuval Mintz 17860a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 17870a7fb11cSYuval Mintz if (!p_ll2_conn) 17880a7fb11cSYuval Mintz return -EINVAL; 17890a7fb11cSYuval Mintz p_rx = &p_ll2_conn->rx_queue; 179037110237SShai Malin if (!p_rx->set_prod_addr) 179137110237SShai Malin return -EIO; 17920a7fb11cSYuval Mintz 17930a7fb11cSYuval Mintz spin_lock_irqsave(&p_rx->lock, flags); 17940a7fb11cSYuval Mintz if (!list_empty(&p_rx->free_descq)) 17950a7fb11cSYuval Mintz p_curp = list_first_entry(&p_rx->free_descq, 17960a7fb11cSYuval Mintz struct qed_ll2_rx_packet, list_entry); 17970a7fb11cSYuval Mintz if (p_curp) { 17980a7fb11cSYuval Mintz if (qed_chain_get_elem_left(&p_rx->rxq_chain) && 17990a7fb11cSYuval Mintz qed_chain_get_elem_left(&p_rx->rcq_chain)) { 18000a7fb11cSYuval Mintz p_data = qed_chain_produce(&p_rx->rxq_chain); 18010a7fb11cSYuval Mintz p_curb = (struct core_rx_bd_with_buff_len *)p_data; 18020a7fb11cSYuval Mintz qed_chain_produce(&p_rx->rcq_chain); 18030a7fb11cSYuval Mintz } 18040a7fb11cSYuval Mintz } 18050a7fb11cSYuval Mintz 1806ee824f4bSOmkar Kulkarni /* If we're lacking entries, let's try to flush buffers to FW */ 18070a7fb11cSYuval Mintz if (!p_curp || !p_curb) { 18080a7fb11cSYuval Mintz rc = -EBUSY; 18090a7fb11cSYuval Mintz p_curp = NULL; 18100a7fb11cSYuval Mintz goto out_notify; 18110a7fb11cSYuval Mintz } 18120a7fb11cSYuval Mintz 18130a7fb11cSYuval Mintz /* We have an Rx packet we can fill */ 18140a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_curb->addr, addr); 18150a7fb11cSYuval Mintz p_curb->buff_length = cpu_to_le16(buf_len); 18160a7fb11cSYuval Mintz p_curp->rx_buf_addr = addr; 18170a7fb11cSYuval Mintz p_curp->cookie = cookie; 18180a7fb11cSYuval Mintz p_curp->rxq_bd = p_curb; 18190a7fb11cSYuval Mintz p_curp->buf_length = buf_len; 18200a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 18210a7fb11cSYuval Mintz 18220a7fb11cSYuval Mintz /* Check if we only want to enqueue this packet without informing FW */ 18230a7fb11cSYuval Mintz if (!notify_fw) { 18240a7fb11cSYuval Mintz list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); 18250a7fb11cSYuval Mintz goto out; 18260a7fb11cSYuval Mintz } 18270a7fb11cSYuval Mintz 18280a7fb11cSYuval Mintz out_notify: 18290a7fb11cSYuval Mintz qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); 18300a7fb11cSYuval Mintz out: 18310a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_rx->lock, flags); 18320a7fb11cSYuval Mintz return rc; 18330a7fb11cSYuval Mintz } 18340a7fb11cSYuval Mintz 18350a7fb11cSYuval Mintz static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, 18360a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx, 18370a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 18387c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 18390a7fb11cSYuval Mintz u8 notify_fw) 18400a7fb11cSYuval Mintz { 18410a7fb11cSYuval Mintz list_del(&p_curp->list_entry); 18427c7973b2SMintz, Yuval p_curp->cookie = pkt->cookie; 18437c7973b2SMintz, Yuval p_curp->bd_used = pkt->num_of_bds; 18440a7fb11cSYuval Mintz p_curp->notify_fw = notify_fw; 18450a7fb11cSYuval Mintz p_tx->cur_send_packet = p_curp; 18460a7fb11cSYuval Mintz p_tx->cur_send_frag_num = 0; 18470a7fb11cSYuval Mintz 18487c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag; 18497c7973b2SMintz, Yuval p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len; 18500a7fb11cSYuval Mintz p_tx->cur_send_frag_num++; 18510a7fb11cSYuval Mintz } 18520a7fb11cSYuval Mintz 1853be086e7cSMintz, Yuval static void 1854be086e7cSMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, 18550a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2, 18560a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp, 18577c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt) 18580a7fb11cSYuval Mintz { 18590a7fb11cSYuval Mintz struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; 18600a7fb11cSYuval Mintz u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); 18610a7fb11cSYuval Mintz struct core_tx_bd *start_bd = NULL; 18627c7973b2SMintz, Yuval enum core_roce_flavor_type roce_flavor; 18637c7973b2SMintz, Yuval enum core_tx_dest tx_dest; 1864be086e7cSMintz, Yuval u16 bd_data = 0, frag_idx; 18655ab90341SAlexander Lobakin u16 bitfield1; 18660a7fb11cSYuval Mintz 18677c7973b2SMintz, Yuval roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE 18687c7973b2SMintz, Yuval : CORE_RROCE; 18697c7973b2SMintz, Yuval 187077caa792SMichal Kalderon switch (pkt->tx_dest) { 187177caa792SMichal Kalderon case QED_LL2_TX_DEST_NW: 187277caa792SMichal Kalderon tx_dest = CORE_TX_DEST_NW; 187377caa792SMichal Kalderon break; 187477caa792SMichal Kalderon case QED_LL2_TX_DEST_LB: 187577caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 187677caa792SMichal Kalderon break; 187777caa792SMichal Kalderon case QED_LL2_TX_DEST_DROP: 187877caa792SMichal Kalderon tx_dest = CORE_TX_DEST_DROP; 187977caa792SMichal Kalderon break; 188077caa792SMichal Kalderon default: 188177caa792SMichal Kalderon tx_dest = CORE_TX_DEST_LB; 188277caa792SMichal Kalderon break; 188377caa792SMichal Kalderon } 18847c7973b2SMintz, Yuval 18850a7fb11cSYuval Mintz start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1886891e861eSShai Malin if (likely(QED_IS_IWARP_PERSONALITY(p_hwfn) && 1887891e861eSShai Malin p_ll2->input.conn_type == QED_LL2_TYPE_OOO)) { 188889d65113SMichal Kalderon start_bd->nw_vlan_or_lb_echo = 188989d65113SMichal Kalderon cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); 1890cac6f691SSudarsana Reddy Kalluru } else { 18917c7973b2SMintz, Yuval start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); 1892cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && 1893cac6f691SSudarsana Reddy Kalluru p_ll2->input.conn_type == QED_LL2_TYPE_FCOE) 1894cac6f691SSudarsana Reddy Kalluru pkt->remove_stag = true; 1895cac6f691SSudarsana Reddy Kalluru } 1896cac6f691SSudarsana Reddy Kalluru 18975ab90341SAlexander Lobakin bitfield1 = le16_to_cpu(start_bd->bitfield1); 18985ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, pkt->l4_hdr_offset_w); 18995ab90341SAlexander Lobakin SET_FIELD(bitfield1, CORE_TX_BD_TX_DST, tx_dest); 19005ab90341SAlexander Lobakin start_bd->bitfield1 = cpu_to_le16(bitfield1); 19015ab90341SAlexander Lobakin 19027c7973b2SMintz, Yuval bd_data |= pkt->bd_flags; 1903be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); 19047c7973b2SMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); 1905be086e7cSMintz, Yuval SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); 19066df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); 19076df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); 19086df60fe7SMichal Kalderon SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); 1909cac6f691SSudarsana Reddy Kalluru SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION, 1910cac6f691SSudarsana Reddy Kalluru !!(pkt->remove_stag)); 1911cac6f691SSudarsana Reddy Kalluru 1912be086e7cSMintz, Yuval start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); 19137c7973b2SMintz, Yuval DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); 19147c7973b2SMintz, Yuval start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); 19150a7fb11cSYuval Mintz 19160a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 19170a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 19180a7fb11cSYuval 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", 19190a7fb11cSYuval Mintz p_ll2->queue_id, 19200a7fb11cSYuval Mintz p_ll2->cid, 192113c54771SMintz, Yuval p_ll2->input.conn_type, 19220a7fb11cSYuval Mintz prod_idx, 19237c7973b2SMintz, Yuval pkt->first_frag_len, 19247c7973b2SMintz, Yuval pkt->num_of_bds, 19250a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.hi), 19260a7fb11cSYuval Mintz le32_to_cpu(start_bd->addr.lo)); 19270a7fb11cSYuval Mintz 19287c7973b2SMintz, Yuval if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds) 19290a7fb11cSYuval Mintz return; 19300a7fb11cSYuval Mintz 19310a7fb11cSYuval Mintz /* Need to provide the packet with additional BDs for frags */ 19320a7fb11cSYuval Mintz for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; 19337c7973b2SMintz, Yuval frag_idx < pkt->num_of_bds; frag_idx++) { 19340a7fb11cSYuval Mintz struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; 19350a7fb11cSYuval Mintz 19360a7fb11cSYuval Mintz *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); 1937be086e7cSMintz, Yuval (*p_bd)->bd_data.as_bitfield = 0; 19380a7fb11cSYuval Mintz (*p_bd)->bitfield1 = 0; 19390a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].tx_frag = 0; 19400a7fb11cSYuval Mintz p_curp->bds_set[frag_idx].frag_len = 0; 19410a7fb11cSYuval Mintz } 19420a7fb11cSYuval Mintz } 19430a7fb11cSYuval Mintz 19440a7fb11cSYuval Mintz /* This should be called while the Txq spinlock is being held */ 19450a7fb11cSYuval Mintz static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, 19460a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn) 19470a7fb11cSYuval Mintz { 19480a7fb11cSYuval Mintz bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; 19490a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; 19500a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_pkt = NULL; 19510a7fb11cSYuval Mintz u16 bd_prod; 19520a7fb11cSYuval Mintz 19530a7fb11cSYuval Mintz /* If there are missing BDs, don't do anything now */ 19540a7fb11cSYuval Mintz if (p_ll2_conn->tx_queue.cur_send_frag_num != 19550a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet->bd_used) 19560a7fb11cSYuval Mintz return; 19570a7fb11cSYuval Mintz 19580a7fb11cSYuval Mintz /* Push the current packet to the list and clean after it */ 19590a7fb11cSYuval Mintz list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, 19600a7fb11cSYuval Mintz &p_ll2_conn->tx_queue.sending_descq); 19610a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_packet = NULL; 19620a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num = 0; 19630a7fb11cSYuval Mintz 19640a7fb11cSYuval Mintz /* Notify FW of packet only if requested to */ 19650a7fb11cSYuval Mintz if (!b_notify) 19660a7fb11cSYuval Mintz return; 19670a7fb11cSYuval Mintz 19680a7fb11cSYuval Mintz bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); 19690a7fb11cSYuval Mintz 19700a7fb11cSYuval Mintz while (!list_empty(&p_tx->sending_descq)) { 19710a7fb11cSYuval Mintz p_pkt = list_first_entry(&p_tx->sending_descq, 19720a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 19730a7fb11cSYuval Mintz if (!p_pkt) 19740a7fb11cSYuval Mintz break; 19750a7fb11cSYuval Mintz 1976b4f0fd4bSWei Yongjun list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); 19770a7fb11cSYuval Mintz } 19780a7fb11cSYuval Mintz 1979b78d5400SAriel Elior p_tx->db_msg.spq_prod = cpu_to_le16(bd_prod); 19800a7fb11cSYuval Mintz 19810a7fb11cSYuval Mintz /* Make sure the BDs data is updated before ringing the doorbell */ 19820a7fb11cSYuval Mintz wmb(); 19830a7fb11cSYuval Mintz 1984b78d5400SAriel Elior DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&p_tx->db_msg)); 19850a7fb11cSYuval Mintz 19860a7fb11cSYuval Mintz DP_VERBOSE(p_hwfn, 19870a7fb11cSYuval Mintz (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), 19880a7fb11cSYuval Mintz "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", 19890a7fb11cSYuval Mintz p_ll2_conn->queue_id, 199013c54771SMintz, Yuval p_ll2_conn->cid, 1991b78d5400SAriel Elior p_ll2_conn->input.conn_type, p_tx->db_msg.spq_prod); 19920a7fb11cSYuval Mintz } 19930a7fb11cSYuval Mintz 19940518c12fSMichal Kalderon int qed_ll2_prepare_tx_packet(void *cxt, 19950a7fb11cSYuval Mintz u8 connection_handle, 19967c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info *pkt, 19977c7973b2SMintz, Yuval bool notify_fw) 19980a7fb11cSYuval Mintz { 19990518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20000a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_curp = NULL; 20010a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20020a7fb11cSYuval Mintz struct qed_ll2_tx_queue *p_tx; 20030a7fb11cSYuval Mintz struct qed_chain *p_tx_chain; 20040a7fb11cSYuval Mintz unsigned long flags; 20050a7fb11cSYuval Mintz int rc = 0; 20060a7fb11cSYuval Mintz 20070a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 2008891e861eSShai Malin if (unlikely(!p_ll2_conn)) 20090a7fb11cSYuval Mintz return -EINVAL; 20100a7fb11cSYuval Mintz p_tx = &p_ll2_conn->tx_queue; 20110a7fb11cSYuval Mintz p_tx_chain = &p_tx->txq_chain; 20120a7fb11cSYuval Mintz 2013891e861eSShai Malin if (unlikely(pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet)) 20140a7fb11cSYuval Mintz return -EIO; 20150a7fb11cSYuval Mintz 20160a7fb11cSYuval Mintz spin_lock_irqsave(&p_tx->lock, flags); 2017891e861eSShai Malin if (unlikely(p_tx->cur_send_packet)) { 20180a7fb11cSYuval Mintz rc = -EEXIST; 20190a7fb11cSYuval Mintz goto out; 20200a7fb11cSYuval Mintz } 20210a7fb11cSYuval Mintz 20220a7fb11cSYuval Mintz /* Get entry, but only if we have tx elements for it */ 2023891e861eSShai Malin if (unlikely(!list_empty(&p_tx->free_descq))) 20240a7fb11cSYuval Mintz p_curp = list_first_entry(&p_tx->free_descq, 20250a7fb11cSYuval Mintz struct qed_ll2_tx_packet, list_entry); 2026891e861eSShai Malin if (unlikely(p_curp && 2027891e861eSShai Malin qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds)) 20280a7fb11cSYuval Mintz p_curp = NULL; 20290a7fb11cSYuval Mintz 2030891e861eSShai Malin if (unlikely(!p_curp)) { 20310a7fb11cSYuval Mintz rc = -EBUSY; 20320a7fb11cSYuval Mintz goto out; 20330a7fb11cSYuval Mintz } 20340a7fb11cSYuval Mintz 20350a7fb11cSYuval Mintz /* Prepare packet and BD, and perhaps send a doorbell to FW */ 20367c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw); 20377c7973b2SMintz, Yuval 20387c7973b2SMintz, Yuval qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt); 20390a7fb11cSYuval Mintz 20400a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 20410a7fb11cSYuval Mintz 20420a7fb11cSYuval Mintz out: 20430a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_tx->lock, flags); 20440a7fb11cSYuval Mintz return rc; 20450a7fb11cSYuval Mintz } 20460a7fb11cSYuval Mintz 20470518c12fSMichal Kalderon int qed_ll2_set_fragment_of_tx_packet(void *cxt, 20480a7fb11cSYuval Mintz u8 connection_handle, 20490a7fb11cSYuval Mintz dma_addr_t addr, u16 nbytes) 20500a7fb11cSYuval Mintz { 20510a7fb11cSYuval Mintz struct qed_ll2_tx_packet *p_cur_send_packet = NULL; 20520518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20530a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20540a7fb11cSYuval Mintz u16 cur_send_frag_num = 0; 20550a7fb11cSYuval Mintz struct core_tx_bd *p_bd; 20560a7fb11cSYuval Mintz unsigned long flags; 20570a7fb11cSYuval Mintz 20580a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 2059891e861eSShai Malin if (unlikely(!p_ll2_conn)) 20600a7fb11cSYuval Mintz return -EINVAL; 20610a7fb11cSYuval Mintz 2062891e861eSShai Malin if (unlikely(!p_ll2_conn->tx_queue.cur_send_packet)) 20630a7fb11cSYuval Mintz return -EINVAL; 20640a7fb11cSYuval Mintz 20650a7fb11cSYuval Mintz p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; 20660a7fb11cSYuval Mintz cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; 20670a7fb11cSYuval Mintz 2068891e861eSShai Malin if (unlikely(cur_send_frag_num >= p_cur_send_packet->bd_used)) 20690a7fb11cSYuval Mintz return -EINVAL; 20700a7fb11cSYuval Mintz 20710a7fb11cSYuval Mintz /* Fill the BD information, and possibly notify FW */ 20720a7fb11cSYuval Mintz p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; 20730a7fb11cSYuval Mintz DMA_REGPAIR_LE(p_bd->addr, addr); 20740a7fb11cSYuval Mintz p_bd->nbytes = cpu_to_le16(nbytes); 20750a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; 20760a7fb11cSYuval Mintz p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; 20770a7fb11cSYuval Mintz 20780a7fb11cSYuval Mintz p_ll2_conn->tx_queue.cur_send_frag_num++; 20790a7fb11cSYuval Mintz 20800a7fb11cSYuval Mintz spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); 20810a7fb11cSYuval Mintz qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); 20820a7fb11cSYuval Mintz spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); 20830a7fb11cSYuval Mintz 20840a7fb11cSYuval Mintz return 0; 20850a7fb11cSYuval Mintz } 20860a7fb11cSYuval Mintz 20870518c12fSMichal Kalderon int qed_ll2_terminate_connection(void *cxt, u8 connection_handle) 20880a7fb11cSYuval Mintz { 20890518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 20900a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 20910a7fb11cSYuval Mintz int rc = -EINVAL; 209215582962SRahul Verma struct qed_ptt *p_ptt; 209315582962SRahul Verma 209415582962SRahul Verma p_ptt = qed_ptt_acquire(p_hwfn); 209515582962SRahul Verma if (!p_ptt) 209615582962SRahul Verma return -EAGAIN; 20970a7fb11cSYuval Mintz 20980a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); 209915582962SRahul Verma if (!p_ll2_conn) { 210015582962SRahul Verma rc = -EINVAL; 210115582962SRahul Verma goto out; 210215582962SRahul Verma } 21030a7fb11cSYuval Mintz 21040a7fb11cSYuval Mintz /* Stop Tx & Rx of connection, if needed */ 21050a7fb11cSYuval Mintz if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { 21066a42b512SColin Ian King p_ll2_conn->tx_queue.b_cb_registered = false; 2107fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 21080a7fb11cSYuval Mintz rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); 21090a7fb11cSYuval Mintz if (rc) 211015582962SRahul Verma goto out; 2111fc16f56bSMichal Kalderon 21120a7fb11cSYuval Mintz qed_ll2_txq_flush(p_hwfn, connection_handle); 2113fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); 21140a7fb11cSYuval Mintz } 21150a7fb11cSYuval Mintz 21160a7fb11cSYuval Mintz if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { 21176a42b512SColin Ian King p_ll2_conn->rx_queue.b_cb_registered = false; 2118fc16f56bSMichal Kalderon smp_wmb(); /* Make sure this is seen by ll2_lb_rxq_completion */ 2119997af5dfSMichal Kalderon 2120997af5dfSMichal Kalderon if (p_ll2_conn->rx_queue.ctx_based) 2121997af5dfSMichal Kalderon qed_db_recovery_del(p_hwfn->cdev, 2122997af5dfSMichal Kalderon p_ll2_conn->rx_queue.set_prod_addr, 2123997af5dfSMichal Kalderon &p_ll2_conn->rx_queue.db_data); 2124997af5dfSMichal Kalderon 21250a7fb11cSYuval Mintz rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); 21260a7fb11cSYuval Mintz if (rc) 212715582962SRahul Verma goto out; 2128fc16f56bSMichal Kalderon 21290a7fb11cSYuval Mintz qed_ll2_rxq_flush(p_hwfn, connection_handle); 2130fc16f56bSMichal Kalderon qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); 21310a7fb11cSYuval Mintz } 21320a7fb11cSYuval Mintz 2133526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) 21341d6cff4fSYuval Mintz qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 21351d6cff4fSYuval Mintz 213613c54771SMintz, Yuval if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) { 2137cac6f691SSudarsana Reddy Kalluru if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits)) 213879284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 213979284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 214079284adeSMichal Kalderon ETH_P_FCOE, 0); 214179284adeSMichal Kalderon qed_llh_remove_protocol_filter(p_hwfn->cdev, 0, 214279284adeSMichal Kalderon QED_LLH_FILTER_ETHERTYPE, 214379284adeSMichal Kalderon ETH_P_FIP, 0); 21441e128c81SArun Easi } 21451e128c81SArun Easi 214615582962SRahul Verma out: 214715582962SRahul Verma qed_ptt_release(p_hwfn, p_ptt); 21480a7fb11cSYuval Mintz return rc; 21490a7fb11cSYuval Mintz } 21500a7fb11cSYuval Mintz 215158de2898SMintz, Yuval static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, 215258de2898SMintz, Yuval struct qed_ll2_info *p_ll2_conn) 215358de2898SMintz, Yuval { 215458de2898SMintz, Yuval struct qed_ooo_buffer *p_buffer; 215558de2898SMintz, Yuval 2156526d1d05SKalderon, Michal if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO) 215758de2898SMintz, Yuval return; 215858de2898SMintz, Yuval 215958de2898SMintz, Yuval qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); 216058de2898SMintz, Yuval while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, 216158de2898SMintz, Yuval p_hwfn->p_ooo_info))) { 216258de2898SMintz, Yuval dma_free_coherent(&p_hwfn->cdev->pdev->dev, 216358de2898SMintz, Yuval p_buffer->rx_buffer_size, 216458de2898SMintz, Yuval p_buffer->rx_buffer_virt_addr, 216558de2898SMintz, Yuval p_buffer->rx_buffer_phys_addr); 216658de2898SMintz, Yuval kfree(p_buffer); 216758de2898SMintz, Yuval } 216858de2898SMintz, Yuval } 21690518c12fSMichal Kalderon 21700518c12fSMichal Kalderon void qed_ll2_release_connection(void *cxt, u8 connection_handle) 21710a7fb11cSYuval Mintz { 21720518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 21730a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 21740a7fb11cSYuval Mintz 21750a7fb11cSYuval Mintz p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); 21760a7fb11cSYuval Mintz if (!p_ll2_conn) 21770a7fb11cSYuval Mintz return; 21780a7fb11cSYuval Mintz 2179f5823fe6SMichal Kalderon kfree(p_ll2_conn->tx_queue.descq_mem); 21800a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); 21810a7fb11cSYuval Mintz 21820a7fb11cSYuval Mintz kfree(p_ll2_conn->rx_queue.descq_array); 21830a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); 21840a7fb11cSYuval Mintz qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); 21850a7fb11cSYuval Mintz 21860a7fb11cSYuval Mintz qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); 21870a7fb11cSYuval Mintz 21881d6cff4fSYuval Mintz qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); 21891d6cff4fSYuval Mintz 21900a7fb11cSYuval Mintz mutex_lock(&p_ll2_conn->mutex); 21910a7fb11cSYuval Mintz p_ll2_conn->b_active = false; 21920a7fb11cSYuval Mintz mutex_unlock(&p_ll2_conn->mutex); 21930a7fb11cSYuval Mintz } 21940a7fb11cSYuval Mintz 21953587cb87STomer Tayar int qed_ll2_alloc(struct qed_hwfn *p_hwfn) 21960a7fb11cSYuval Mintz { 21970a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_connections; 21980a7fb11cSYuval Mintz u8 i; 21990a7fb11cSYuval Mintz 22000a7fb11cSYuval Mintz /* Allocate LL2's set struct */ 22010a7fb11cSYuval Mintz p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, 22020a7fb11cSYuval Mintz sizeof(struct qed_ll2_info), GFP_KERNEL); 22030a7fb11cSYuval Mintz if (!p_ll2_connections) { 22040a7fb11cSYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); 22053587cb87STomer Tayar return -ENOMEM; 22060a7fb11cSYuval Mintz } 22070a7fb11cSYuval Mintz 22080a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 22090a7fb11cSYuval Mintz p_ll2_connections[i].my_id = i; 22100a7fb11cSYuval Mintz 22113587cb87STomer Tayar p_hwfn->p_ll2_info = p_ll2_connections; 22123587cb87STomer Tayar return 0; 22130a7fb11cSYuval Mintz } 22140a7fb11cSYuval Mintz 22153587cb87STomer Tayar void qed_ll2_setup(struct qed_hwfn *p_hwfn) 22160a7fb11cSYuval Mintz { 22170a7fb11cSYuval Mintz int i; 22180a7fb11cSYuval Mintz 22190a7fb11cSYuval Mintz for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) 22203587cb87STomer Tayar mutex_init(&p_hwfn->p_ll2_info[i].mutex); 22210a7fb11cSYuval Mintz } 22220a7fb11cSYuval Mintz 22233587cb87STomer Tayar void qed_ll2_free(struct qed_hwfn *p_hwfn) 22240a7fb11cSYuval Mintz { 22253587cb87STomer Tayar if (!p_hwfn->p_ll2_info) 22263587cb87STomer Tayar return; 22273587cb87STomer Tayar 22283587cb87STomer Tayar kfree(p_hwfn->p_ll2_info); 22293587cb87STomer Tayar p_hwfn->p_ll2_info = NULL; 22300a7fb11cSYuval Mintz } 22310a7fb11cSYuval Mintz 2232fef1c3f7SMintz, Yuval static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn, 2233fef1c3f7SMintz, Yuval struct qed_ptt *p_ptt, 2234fef1c3f7SMintz, Yuval struct qed_ll2_stats *p_stats) 2235fef1c3f7SMintz, Yuval { 2236fef1c3f7SMintz, Yuval struct core_ll2_port_stats port_stats; 2237fef1c3f7SMintz, Yuval 2238fef1c3f7SMintz, Yuval memset(&port_stats, 0, sizeof(port_stats)); 2239fef1c3f7SMintz, Yuval qed_memcpy_from(p_hwfn, p_ptt, &port_stats, 2240fef1c3f7SMintz, Yuval BAR0_MAP_REG_TSDM_RAM + 2241fef1c3f7SMintz, Yuval TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)), 2242fef1c3f7SMintz, Yuval sizeof(port_stats)); 2243fef1c3f7SMintz, Yuval 22447e50769cSMichal Kalderon p_stats->gsi_invalid_hdr += HILO_64_REGPAIR(port_stats.gsi_invalid_hdr); 22457e50769cSMichal Kalderon p_stats->gsi_invalid_pkt_length += 2246fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length); 22477e50769cSMichal Kalderon p_stats->gsi_unsupported_pkt_typ += 2248fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ); 22497e50769cSMichal Kalderon p_stats->gsi_crcchksm_error += 2250fef1c3f7SMintz, Yuval HILO_64_REGPAIR(port_stats.gsi_crcchksm_error); 2251fef1c3f7SMintz, Yuval } 2252fef1c3f7SMintz, Yuval 22530a7fb11cSYuval Mintz static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, 22540a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22550a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22560a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22570a7fb11cSYuval Mintz { 22580a7fb11cSYuval Mintz struct core_ll2_tstorm_per_queue_stat tstats; 22590a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 22600a7fb11cSYuval Mintz u32 tstats_addr; 22610a7fb11cSYuval Mintz 22620a7fb11cSYuval Mintz memset(&tstats, 0, sizeof(tstats)); 22630a7fb11cSYuval Mintz tstats_addr = BAR0_MAP_REG_TSDM_RAM + 22640a7fb11cSYuval Mintz CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); 22650a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); 22660a7fb11cSYuval Mintz 22677e50769cSMichal Kalderon p_stats->packet_too_big_discard += 22680a7fb11cSYuval Mintz HILO_64_REGPAIR(tstats.packet_too_big_discard); 22697e50769cSMichal Kalderon p_stats->no_buff_discard += HILO_64_REGPAIR(tstats.no_buff_discard); 22700a7fb11cSYuval Mintz } 22710a7fb11cSYuval Mintz 22720a7fb11cSYuval Mintz static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, 22730a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22740a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22750a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22760a7fb11cSYuval Mintz { 22770a7fb11cSYuval Mintz struct core_ll2_ustorm_per_queue_stat ustats; 22780a7fb11cSYuval Mintz u8 qid = p_ll2_conn->queue_id; 22790a7fb11cSYuval Mintz u32 ustats_addr; 22800a7fb11cSYuval Mintz 22810a7fb11cSYuval Mintz memset(&ustats, 0, sizeof(ustats)); 22820a7fb11cSYuval Mintz ustats_addr = BAR0_MAP_REG_USDM_RAM + 22830a7fb11cSYuval Mintz CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); 22840a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); 22850a7fb11cSYuval Mintz 22867e50769cSMichal Kalderon p_stats->rcv_ucast_bytes += HILO_64_REGPAIR(ustats.rcv_ucast_bytes); 22877e50769cSMichal Kalderon p_stats->rcv_mcast_bytes += HILO_64_REGPAIR(ustats.rcv_mcast_bytes); 22887e50769cSMichal Kalderon p_stats->rcv_bcast_bytes += HILO_64_REGPAIR(ustats.rcv_bcast_bytes); 22897e50769cSMichal Kalderon p_stats->rcv_ucast_pkts += HILO_64_REGPAIR(ustats.rcv_ucast_pkts); 22907e50769cSMichal Kalderon p_stats->rcv_mcast_pkts += HILO_64_REGPAIR(ustats.rcv_mcast_pkts); 22917e50769cSMichal Kalderon p_stats->rcv_bcast_pkts += HILO_64_REGPAIR(ustats.rcv_bcast_pkts); 22920a7fb11cSYuval Mintz } 22930a7fb11cSYuval Mintz 22940a7fb11cSYuval Mintz static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, 22950a7fb11cSYuval Mintz struct qed_ptt *p_ptt, 22960a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn, 22970a7fb11cSYuval Mintz struct qed_ll2_stats *p_stats) 22980a7fb11cSYuval Mintz { 22990a7fb11cSYuval Mintz struct core_ll2_pstorm_per_queue_stat pstats; 23000a7fb11cSYuval Mintz u8 stats_id = p_ll2_conn->tx_stats_id; 23010a7fb11cSYuval Mintz u32 pstats_addr; 23020a7fb11cSYuval Mintz 23030a7fb11cSYuval Mintz memset(&pstats, 0, sizeof(pstats)); 23040a7fb11cSYuval Mintz pstats_addr = BAR0_MAP_REG_PSDM_RAM + 23050a7fb11cSYuval Mintz CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); 23060a7fb11cSYuval Mintz qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); 23070a7fb11cSYuval Mintz 23087e50769cSMichal Kalderon p_stats->sent_ucast_bytes += HILO_64_REGPAIR(pstats.sent_ucast_bytes); 23097e50769cSMichal Kalderon p_stats->sent_mcast_bytes += HILO_64_REGPAIR(pstats.sent_mcast_bytes); 23107e50769cSMichal Kalderon p_stats->sent_bcast_bytes += HILO_64_REGPAIR(pstats.sent_bcast_bytes); 23117e50769cSMichal Kalderon p_stats->sent_ucast_pkts += HILO_64_REGPAIR(pstats.sent_ucast_pkts); 23127e50769cSMichal Kalderon p_stats->sent_mcast_pkts += HILO_64_REGPAIR(pstats.sent_mcast_pkts); 23137e50769cSMichal Kalderon p_stats->sent_bcast_pkts += HILO_64_REGPAIR(pstats.sent_bcast_pkts); 23140a7fb11cSYuval Mintz } 23150a7fb11cSYuval Mintz 2316443473d2SMichal Kalderon static int __qed_ll2_get_stats(void *cxt, u8 connection_handle, 2317443473d2SMichal Kalderon struct qed_ll2_stats *p_stats) 23180a7fb11cSYuval Mintz { 23190518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 23200a7fb11cSYuval Mintz struct qed_ll2_info *p_ll2_conn = NULL; 23210a7fb11cSYuval Mintz struct qed_ptt *p_ptt; 23220a7fb11cSYuval Mintz 23230a7fb11cSYuval Mintz if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || 23240a7fb11cSYuval Mintz !p_hwfn->p_ll2_info) 23250a7fb11cSYuval Mintz return -EINVAL; 23260a7fb11cSYuval Mintz 23270a7fb11cSYuval Mintz p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; 23280a7fb11cSYuval Mintz 23290a7fb11cSYuval Mintz p_ptt = qed_ptt_acquire(p_hwfn); 23300a7fb11cSYuval Mintz if (!p_ptt) { 23310a7fb11cSYuval Mintz DP_ERR(p_hwfn, "Failed to acquire ptt\n"); 23320a7fb11cSYuval Mintz return -EINVAL; 23330a7fb11cSYuval Mintz } 23340a7fb11cSYuval Mintz 2335fef1c3f7SMintz, Yuval if (p_ll2_conn->input.gsi_enable) 2336fef1c3f7SMintz, Yuval _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats); 23377e50769cSMichal Kalderon 23380a7fb11cSYuval Mintz _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 23397e50769cSMichal Kalderon 23400a7fb11cSYuval Mintz _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 23417e50769cSMichal Kalderon 23420a7fb11cSYuval Mintz if (p_ll2_conn->tx_stats_en) 23430a7fb11cSYuval Mintz _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); 23440a7fb11cSYuval Mintz 23450a7fb11cSYuval Mintz qed_ptt_release(p_hwfn, p_ptt); 23467e50769cSMichal Kalderon 23470a7fb11cSYuval Mintz return 0; 23480a7fb11cSYuval Mintz } 23490a7fb11cSYuval Mintz 23507e50769cSMichal Kalderon int qed_ll2_get_stats(void *cxt, 23517e50769cSMichal Kalderon u8 connection_handle, struct qed_ll2_stats *p_stats) 23527e50769cSMichal Kalderon { 23537e50769cSMichal Kalderon memset(p_stats, 0, sizeof(*p_stats)); 23547e50769cSMichal Kalderon return __qed_ll2_get_stats(cxt, connection_handle, p_stats); 23557e50769cSMichal Kalderon } 23567e50769cSMichal Kalderon 23570518c12fSMichal Kalderon static void qed_ll2b_release_rx_packet(void *cxt, 23580518c12fSMichal Kalderon u8 connection_handle, 23590518c12fSMichal Kalderon void *cookie, 23600518c12fSMichal Kalderon dma_addr_t rx_buf_addr, 23610518c12fSMichal Kalderon bool b_last_packet) 23620518c12fSMichal Kalderon { 23630518c12fSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 23640518c12fSMichal Kalderon 23650518c12fSMichal Kalderon qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie); 23660518c12fSMichal Kalderon } 23670518c12fSMichal Kalderon 23680a7fb11cSYuval Mintz static void qed_ll2_register_cb_ops(struct qed_dev *cdev, 23690a7fb11cSYuval Mintz const struct qed_ll2_cb_ops *ops, 23700a7fb11cSYuval Mintz void *cookie) 23710a7fb11cSYuval Mintz { 23720a7fb11cSYuval Mintz cdev->ll2->cbs = ops; 23730a7fb11cSYuval Mintz cdev->ll2->cb_cookie = cookie; 23740a7fb11cSYuval Mintz } 23750a7fb11cSYuval Mintz 23768ffe2df6SZou Wei static struct qed_ll2_cbs ll2_cbs = { 23770518c12fSMichal Kalderon .rx_comp_cb = &qed_ll2b_complete_rx_packet, 23780518c12fSMichal Kalderon .rx_release_cb = &qed_ll2b_release_rx_packet, 23790518c12fSMichal Kalderon .tx_comp_cb = &qed_ll2b_complete_tx_packet, 23800518c12fSMichal Kalderon .tx_release_cb = &qed_ll2b_complete_tx_packet, 23810518c12fSMichal Kalderon }; 23820518c12fSMichal Kalderon 23837e50769cSMichal Kalderon static void qed_ll2_set_conn_data(struct qed_hwfn *p_hwfn, 238413c54771SMintz, Yuval struct qed_ll2_acquire_data *data, 238513c54771SMintz, Yuval struct qed_ll2_params *params, 238613c54771SMintz, Yuval enum qed_ll2_conn_type conn_type, 23870518c12fSMichal Kalderon u8 *handle, bool lb) 238813c54771SMintz, Yuval { 238913c54771SMintz, Yuval memset(data, 0, sizeof(*data)); 239013c54771SMintz, Yuval 239113c54771SMintz, Yuval data->input.conn_type = conn_type; 239213c54771SMintz, Yuval data->input.mtu = params->mtu; 239313c54771SMintz, Yuval data->input.rx_num_desc = QED_LL2_RX_SIZE; 239413c54771SMintz, Yuval data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets; 239513c54771SMintz, Yuval data->input.rx_vlan_removal_en = params->rx_vlan_stripping; 239613c54771SMintz, Yuval data->input.tx_num_desc = QED_LL2_TX_SIZE; 239713c54771SMintz, Yuval data->p_connection_handle = handle; 23980518c12fSMichal Kalderon data->cbs = &ll2_cbs; 23997e50769cSMichal Kalderon ll2_cbs.cookie = p_hwfn; 24000518c12fSMichal Kalderon 240113c54771SMintz, Yuval if (lb) { 2402526d1d05SKalderon, Michal data->input.tx_tc = PKT_LB_TC; 240313c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_LB; 240413c54771SMintz, Yuval } else { 240513c54771SMintz, Yuval data->input.tx_tc = 0; 240613c54771SMintz, Yuval data->input.tx_dest = QED_LL2_TX_DEST_NW; 240713c54771SMintz, Yuval } 240813c54771SMintz, Yuval } 240913c54771SMintz, Yuval 24107e50769cSMichal Kalderon static int qed_ll2_start_ooo(struct qed_hwfn *p_hwfn, 241113c54771SMintz, Yuval struct qed_ll2_params *params) 241213c54771SMintz, Yuval { 24137e50769cSMichal Kalderon u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; 241413c54771SMintz, Yuval struct qed_ll2_acquire_data data; 241513c54771SMintz, Yuval int rc; 241613c54771SMintz, Yuval 24177e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, 2418526d1d05SKalderon, Michal QED_LL2_TYPE_OOO, handle, true); 241913c54771SMintz, Yuval 24207e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 242113c54771SMintz, Yuval if (rc) { 24227e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 OOO connection\n"); 242313c54771SMintz, Yuval goto out; 242413c54771SMintz, Yuval } 242513c54771SMintz, Yuval 24267e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, *handle); 242713c54771SMintz, Yuval if (rc) { 24287e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 OOO connection\n"); 242913c54771SMintz, Yuval goto fail; 243013c54771SMintz, Yuval } 243113c54771SMintz, Yuval 243213c54771SMintz, Yuval return 0; 243313c54771SMintz, Yuval 243413c54771SMintz, Yuval fail: 24357e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, *handle); 243613c54771SMintz, Yuval out: 243713c54771SMintz, Yuval *handle = QED_LL2_UNUSED_HANDLE; 243813c54771SMintz, Yuval return rc; 243913c54771SMintz, Yuval } 244013c54771SMintz, Yuval 24417e50769cSMichal Kalderon static bool qed_ll2_is_storage_eng1(struct qed_dev *cdev) 24427e50769cSMichal Kalderon { 24437e50769cSMichal Kalderon return (QED_IS_FCOE_PERSONALITY(QED_LEADING_HWFN(cdev)) || 2444897e87a1SShai Malin QED_IS_ISCSI_PERSONALITY(QED_LEADING_HWFN(cdev)) || 2445897e87a1SShai Malin QED_IS_NVMETCP_PERSONALITY(QED_LEADING_HWFN(cdev))) && 24467e50769cSMichal Kalderon (QED_AFFIN_HWFN(cdev) != QED_LEADING_HWFN(cdev)); 24477e50769cSMichal Kalderon } 24487e50769cSMichal Kalderon 24497e50769cSMichal Kalderon static int __qed_ll2_stop(struct qed_hwfn *p_hwfn) 24507e50769cSMichal Kalderon { 24517e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 24527e50769cSMichal Kalderon int rc; 24537e50769cSMichal Kalderon 24547e50769cSMichal Kalderon rc = qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 24557e50769cSMichal Kalderon if (rc) 24567e50769cSMichal Kalderon DP_INFO(cdev, "Failed to terminate LL2 connection\n"); 24577e50769cSMichal Kalderon 24587e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 24597e50769cSMichal Kalderon 24607e50769cSMichal Kalderon return rc; 24617e50769cSMichal Kalderon } 24627e50769cSMichal Kalderon 24637e50769cSMichal Kalderon static int qed_ll2_stop(struct qed_dev *cdev) 24647e50769cSMichal Kalderon { 24657e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 24667e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 24677e50769cSMichal Kalderon int rc = 0, rc2 = 0; 24687e50769cSMichal Kalderon 24697e50769cSMichal Kalderon if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) 24707e50769cSMichal Kalderon return 0; 2471897e87a1SShai Malin if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 2472897e87a1SShai Malin qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address); 24737e50769cSMichal Kalderon 24747e50769cSMichal Kalderon qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address); 24757e50769cSMichal Kalderon eth_zero_addr(cdev->ll2_mac_address); 24767e50769cSMichal Kalderon 2477897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 24787e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 24797e50769cSMichal Kalderon 24807e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 24817e50769cSMichal Kalderon if (b_is_storage_eng1) { 24827e50769cSMichal Kalderon rc2 = __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 24837e50769cSMichal Kalderon if (rc2) 24847e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 24857e50769cSMichal Kalderon "Failed to stop LL2 on engine 0\n"); 24867e50769cSMichal Kalderon } 24877e50769cSMichal Kalderon 24887e50769cSMichal Kalderon rc = __qed_ll2_stop(p_hwfn); 24897e50769cSMichal Kalderon if (rc) 24907e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to stop LL2\n"); 24917e50769cSMichal Kalderon 24927e50769cSMichal Kalderon qed_ll2_kill_buffers(cdev); 24937e50769cSMichal Kalderon 24947e50769cSMichal Kalderon cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 24957e50769cSMichal Kalderon 24967e50769cSMichal Kalderon return rc | rc2; 24977e50769cSMichal Kalderon } 24987e50769cSMichal Kalderon 24997e50769cSMichal Kalderon static int __qed_ll2_start(struct qed_hwfn *p_hwfn, 25007e50769cSMichal Kalderon struct qed_ll2_params *params) 25010a7fb11cSYuval Mintz { 250288a2428bSWei Yongjun struct qed_ll2_buffer *buffer, *tmp_buffer; 25037e50769cSMichal Kalderon struct qed_dev *cdev = p_hwfn->cdev; 25040a7fb11cSYuval Mintz enum qed_ll2_conn_type conn_type; 250513c54771SMintz, Yuval struct qed_ll2_acquire_data data; 25067e50769cSMichal Kalderon int rc, rx_cnt; 25070518c12fSMichal Kalderon 25087e50769cSMichal Kalderon switch (p_hwfn->hw_info.personality) { 25091e128c81SArun Easi case QED_PCI_FCOE: 25101e128c81SArun Easi conn_type = QED_LL2_TYPE_FCOE; 25111e128c81SArun Easi break; 25120a7fb11cSYuval Mintz case QED_PCI_ISCSI: 2513897e87a1SShai Malin case QED_PCI_NVMETCP: 25141bd4f571SOmkar Kulkarni conn_type = QED_LL2_TYPE_TCP_ULP; 25150a7fb11cSYuval Mintz break; 25160a7fb11cSYuval Mintz case QED_PCI_ETH_ROCE: 25170a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_ROCE; 25180a7fb11cSYuval Mintz break; 25190a7fb11cSYuval Mintz default: 25207e50769cSMichal Kalderon 25210a7fb11cSYuval Mintz conn_type = QED_LL2_TYPE_TEST; 25220a7fb11cSYuval Mintz } 25230a7fb11cSYuval Mintz 25247e50769cSMichal Kalderon qed_ll2_set_conn_data(p_hwfn, &data, params, conn_type, 25250518c12fSMichal Kalderon &cdev->ll2->handle, false); 25260629a330SArnd Bergmann 25277e50769cSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 25280a7fb11cSYuval Mintz if (rc) { 25297e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to acquire LL2 connection\n"); 25307e50769cSMichal Kalderon return rc; 25310a7fb11cSYuval Mintz } 25320a7fb11cSYuval Mintz 25337e50769cSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, cdev->ll2->handle); 25340a7fb11cSYuval Mintz if (rc) { 25357e50769cSMichal Kalderon DP_INFO(p_hwfn, "Failed to establish LL2 connection\n"); 25367e50769cSMichal Kalderon goto release_conn; 25370a7fb11cSYuval Mintz } 25380a7fb11cSYuval Mintz 25390a7fb11cSYuval Mintz /* Post all Rx buffers to FW */ 25400a7fb11cSYuval Mintz spin_lock_bh(&cdev->ll2->lock); 25417e50769cSMichal Kalderon rx_cnt = cdev->ll2->rx_cnt; 254288a2428bSWei Yongjun list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { 25437e50769cSMichal Kalderon rc = qed_ll2_post_rx_buffer(p_hwfn, 25440a7fb11cSYuval Mintz cdev->ll2->handle, 25450a7fb11cSYuval Mintz buffer->phys_addr, 0, buffer, 1); 25460a7fb11cSYuval Mintz if (rc) { 25477e50769cSMichal Kalderon DP_INFO(p_hwfn, 25480a7fb11cSYuval Mintz "Failed to post an Rx buffer; Deleting it\n"); 25490a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, 25500a7fb11cSYuval Mintz cdev->ll2->rx_size, DMA_FROM_DEVICE); 25510a7fb11cSYuval Mintz kfree(buffer->data); 25520a7fb11cSYuval Mintz list_del(&buffer->list); 25530a7fb11cSYuval Mintz kfree(buffer); 25540a7fb11cSYuval Mintz } else { 25557e50769cSMichal Kalderon rx_cnt++; 25560a7fb11cSYuval Mintz } 25570a7fb11cSYuval Mintz } 25580a7fb11cSYuval Mintz spin_unlock_bh(&cdev->ll2->lock); 25590a7fb11cSYuval Mintz 25607e50769cSMichal Kalderon if (rx_cnt == cdev->ll2->rx_cnt) { 25617e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed passing even a single Rx buffer\n"); 25627e50769cSMichal Kalderon goto terminate_conn; 25630a7fb11cSYuval Mintz } 25647e50769cSMichal Kalderon cdev->ll2->rx_cnt = rx_cnt; 25657e50769cSMichal Kalderon 25667e50769cSMichal Kalderon return 0; 25677e50769cSMichal Kalderon 25687e50769cSMichal Kalderon terminate_conn: 25697e50769cSMichal Kalderon qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle); 25707e50769cSMichal Kalderon release_conn: 25717e50769cSMichal Kalderon qed_ll2_release_connection(p_hwfn, cdev->ll2->handle); 25727e50769cSMichal Kalderon return rc; 25737e50769cSMichal Kalderon } 25747e50769cSMichal Kalderon 25757e50769cSMichal Kalderon static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) 25767e50769cSMichal Kalderon { 25777e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 25787e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 25797e50769cSMichal Kalderon struct qed_ll2_buffer *buffer; 25807e50769cSMichal Kalderon int rx_num_desc, i, rc; 25810a7fb11cSYuval Mintz 25820a7fb11cSYuval Mintz if (!is_valid_ether_addr(params->ll2_mac_address)) { 25837e50769cSMichal Kalderon DP_NOTICE(cdev, "Invalid Ethernet address\n"); 25847e50769cSMichal Kalderon return -EINVAL; 25850a7fb11cSYuval Mintz } 25860a7fb11cSYuval Mintz 25877e50769cSMichal Kalderon WARN_ON(!cdev->ll2->cbs); 25887e50769cSMichal Kalderon 25897e50769cSMichal Kalderon /* Initialize LL2 locks & lists */ 25907e50769cSMichal Kalderon INIT_LIST_HEAD(&cdev->ll2->list); 25917e50769cSMichal Kalderon spin_lock_init(&cdev->ll2->lock); 25927e50769cSMichal Kalderon 25937e50769cSMichal Kalderon cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + 25947e50769cSMichal Kalderon L1_CACHE_BYTES + params->mtu; 25957e50769cSMichal Kalderon 25967e50769cSMichal Kalderon /* Allocate memory for LL2. 25977e50769cSMichal Kalderon * In CMT mode, in case of a storage PF which is affintized to engine 1, 25987e50769cSMichal Kalderon * LL2 is started also on engine 0 and thus we need twofold buffers. 25997e50769cSMichal Kalderon */ 26007e50769cSMichal Kalderon rx_num_desc = QED_LL2_RX_SIZE * (b_is_storage_eng1 ? 2 : 1); 26017e50769cSMichal Kalderon DP_INFO(cdev, "Allocating %d LL2 buffers of size %08x bytes\n", 26027e50769cSMichal Kalderon rx_num_desc, cdev->ll2->rx_size); 26037e50769cSMichal Kalderon for (i = 0; i < rx_num_desc; i++) { 26047e50769cSMichal Kalderon buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 26057e50769cSMichal Kalderon if (!buffer) { 26067e50769cSMichal Kalderon DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); 26077e50769cSMichal Kalderon rc = -ENOMEM; 26087e50769cSMichal Kalderon goto err0; 26097e50769cSMichal Kalderon } 26107e50769cSMichal Kalderon 26117e50769cSMichal Kalderon rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, 26127e50769cSMichal Kalderon &buffer->phys_addr); 26137e50769cSMichal Kalderon if (rc) { 26147e50769cSMichal Kalderon kfree(buffer); 26157e50769cSMichal Kalderon goto err0; 26167e50769cSMichal Kalderon } 26177e50769cSMichal Kalderon 26187e50769cSMichal Kalderon list_add_tail(&buffer->list, &cdev->ll2->list); 26197e50769cSMichal Kalderon } 26207e50769cSMichal Kalderon 26217e50769cSMichal Kalderon rc = __qed_ll2_start(p_hwfn, params); 26227e50769cSMichal Kalderon if (rc) { 26237e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start LL2\n"); 26247e50769cSMichal Kalderon goto err0; 26257e50769cSMichal Kalderon } 26267e50769cSMichal Kalderon 26277e50769cSMichal Kalderon /* In CMT mode, always need to start LL2 on engine 0 for a storage PF, 26287e50769cSMichal Kalderon * since broadcast/mutlicast packets are routed to engine 0. 26297e50769cSMichal Kalderon */ 26307e50769cSMichal Kalderon if (b_is_storage_eng1) { 26317e50769cSMichal Kalderon rc = __qed_ll2_start(QED_LEADING_HWFN(cdev), params); 26327e50769cSMichal Kalderon if (rc) { 26337e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 26347e50769cSMichal Kalderon "Failed to start LL2 on engine 0\n"); 26357e50769cSMichal Kalderon goto err1; 26367e50769cSMichal Kalderon } 26377e50769cSMichal Kalderon } 26387e50769cSMichal Kalderon 2639897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) { 26401d6cff4fSYuval Mintz DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); 26417e50769cSMichal Kalderon rc = qed_ll2_start_ooo(p_hwfn, params); 26421d6cff4fSYuval Mintz if (rc) { 26437e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to start OOO LL2\n"); 26447e50769cSMichal Kalderon goto err2; 26451d6cff4fSYuval Mintz } 26461d6cff4fSYuval Mintz } 26471d6cff4fSYuval Mintz 2648897e87a1SShai Malin if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn)) { 26497e50769cSMichal Kalderon rc = qed_llh_add_mac_filter(cdev, 0, params->ll2_mac_address); 26500a7fb11cSYuval Mintz if (rc) { 26517e50769cSMichal Kalderon DP_NOTICE(cdev, "Failed to add an LLH filter\n"); 26527e50769cSMichal Kalderon goto err3; 26530a7fb11cSYuval Mintz } 2654897e87a1SShai Malin } 2655897e87a1SShai Malin 26560a7fb11cSYuval Mintz ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); 26577e50769cSMichal Kalderon 26580a7fb11cSYuval Mintz return 0; 26590a7fb11cSYuval Mintz 26607e50769cSMichal Kalderon err3: 2661897e87a1SShai Malin if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) 26627e50769cSMichal Kalderon qed_ll2_stop_ooo(p_hwfn); 26637e50769cSMichal Kalderon err2: 26647e50769cSMichal Kalderon if (b_is_storage_eng1) 26657e50769cSMichal Kalderon __qed_ll2_stop(QED_LEADING_HWFN(cdev)); 26667e50769cSMichal Kalderon err1: 26677e50769cSMichal Kalderon __qed_ll2_stop(p_hwfn); 26687e50769cSMichal Kalderon err0: 26690a7fb11cSYuval Mintz qed_ll2_kill_buffers(cdev); 26700a7fb11cSYuval Mintz cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; 26710a7fb11cSYuval Mintz return rc; 26720a7fb11cSYuval Mintz } 26730a7fb11cSYuval Mintz 2674cac6f691SSudarsana Reddy Kalluru static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, 2675cac6f691SSudarsana Reddy Kalluru unsigned long xmit_flags) 26760a7fb11cSYuval Mintz { 26777e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 26787c7973b2SMintz, Yuval struct qed_ll2_tx_pkt_info pkt; 26790a7fb11cSYuval Mintz const skb_frag_t *frag; 26807c81626aSManish Chopra u8 flags = 0, nr_frags; 26810a7fb11cSYuval Mintz int rc = -EINVAL, i; 26820a7fb11cSYuval Mintz dma_addr_t mapping; 26830a7fb11cSYuval Mintz u16 vlan = 0; 26840a7fb11cSYuval Mintz 26850a7fb11cSYuval Mintz if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { 2686ff81de73SColin Ian King DP_INFO(cdev, "Cannot transmit a checksummed packet\n"); 26870a7fb11cSYuval Mintz return -EINVAL; 26880a7fb11cSYuval Mintz } 26890a7fb11cSYuval Mintz 26907c81626aSManish Chopra /* Cache number of fragments from SKB since SKB may be freed by 26917c81626aSManish Chopra * the completion routine after calling qed_ll2_prepare_tx_packet() 26927c81626aSManish Chopra */ 26937c81626aSManish Chopra nr_frags = skb_shinfo(skb)->nr_frags; 26947c81626aSManish Chopra 2695891e861eSShai Malin if (unlikely(1 + nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET)) { 26960a7fb11cSYuval Mintz DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", 26977c81626aSManish Chopra 1 + nr_frags); 26980a7fb11cSYuval Mintz return -EINVAL; 26990a7fb11cSYuval Mintz } 27000a7fb11cSYuval Mintz 27010a7fb11cSYuval Mintz mapping = dma_map_single(&cdev->pdev->dev, skb->data, 27020a7fb11cSYuval Mintz skb->len, DMA_TO_DEVICE); 27030a7fb11cSYuval Mintz if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 27040a7fb11cSYuval Mintz DP_NOTICE(cdev, "SKB mapping failed\n"); 27050a7fb11cSYuval Mintz return -EINVAL; 27060a7fb11cSYuval Mintz } 27070a7fb11cSYuval Mintz 27080a7fb11cSYuval Mintz /* Request HW to calculate IP csum */ 27090a7fb11cSYuval Mintz if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && 27100a7fb11cSYuval Mintz ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) 2711be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT); 27120a7fb11cSYuval Mintz 27130a7fb11cSYuval Mintz if (skb_vlan_tag_present(skb)) { 27140a7fb11cSYuval Mintz vlan = skb_vlan_tag_get(skb); 2715be086e7cSMintz, Yuval flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT); 27160a7fb11cSYuval Mintz } 27170a7fb11cSYuval Mintz 27187c7973b2SMintz, Yuval memset(&pkt, 0, sizeof(pkt)); 27197c81626aSManish Chopra pkt.num_of_bds = 1 + nr_frags; 27207c7973b2SMintz, Yuval pkt.vlan = vlan; 27217c7973b2SMintz, Yuval pkt.bd_flags = flags; 27227c7973b2SMintz, Yuval pkt.tx_dest = QED_LL2_TX_DEST_NW; 27237c7973b2SMintz, Yuval pkt.first_frag = mapping; 27247c7973b2SMintz, Yuval pkt.first_frag_len = skb->len; 27257c7973b2SMintz, Yuval pkt.cookie = skb; 2726cac6f691SSudarsana Reddy Kalluru if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) && 2727cac6f691SSudarsana Reddy Kalluru test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags)) 2728cac6f691SSudarsana Reddy Kalluru pkt.remove_stag = true; 27297c7973b2SMintz, Yuval 27307c81626aSManish Chopra /* qed_ll2_prepare_tx_packet() may actually send the packet if 27317c81626aSManish Chopra * there are no fragments in the skb and subsequently the completion 27327c81626aSManish Chopra * routine may run and free the SKB, so no dereferencing the SKB 27337c81626aSManish Chopra * beyond this point unless skb has any fragments. 27347c81626aSManish Chopra */ 27357e50769cSMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, cdev->ll2->handle, 27367c7973b2SMintz, Yuval &pkt, 1); 2737891e861eSShai Malin if (unlikely(rc)) 27380a7fb11cSYuval Mintz goto err; 27390a7fb11cSYuval Mintz 27407c81626aSManish Chopra for (i = 0; i < nr_frags; i++) { 27410a7fb11cSYuval Mintz frag = &skb_shinfo(skb)->frags[i]; 27420a7fb11cSYuval Mintz 2743d2201a21SMintz, Yuval mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, 2744d2201a21SMintz, Yuval skb_frag_size(frag), DMA_TO_DEVICE); 2745d2201a21SMintz, Yuval 2746d2201a21SMintz, Yuval if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { 27470a7fb11cSYuval Mintz DP_NOTICE(cdev, 27480a7fb11cSYuval Mintz "Unable to map frag - dropping packet\n"); 2749f07d4276SDan Carpenter rc = -ENOMEM; 27500a7fb11cSYuval Mintz goto err; 27510a7fb11cSYuval Mintz } 27520a7fb11cSYuval Mintz 27537e50769cSMichal Kalderon rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 27540a7fb11cSYuval Mintz cdev->ll2->handle, 27550a7fb11cSYuval Mintz mapping, 27560a7fb11cSYuval Mintz skb_frag_size(frag)); 27570a7fb11cSYuval Mintz 27580a7fb11cSYuval Mintz /* if failed not much to do here, partial packet has been posted 27597e50769cSMichal Kalderon * we can't free memory, will need to wait for completion 27600a7fb11cSYuval Mintz */ 2761891e861eSShai Malin if (unlikely(rc)) 27620a7fb11cSYuval Mintz goto err2; 27630a7fb11cSYuval Mintz } 27640a7fb11cSYuval Mintz 27650a7fb11cSYuval Mintz return 0; 27660a7fb11cSYuval Mintz 27670a7fb11cSYuval Mintz err: 27680a7fb11cSYuval Mintz dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); 27690a7fb11cSYuval Mintz err2: 27700a7fb11cSYuval Mintz return rc; 27710a7fb11cSYuval Mintz } 27720a7fb11cSYuval Mintz 27730a7fb11cSYuval Mintz static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) 27740a7fb11cSYuval Mintz { 27757e50769cSMichal Kalderon bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev); 27767e50769cSMichal Kalderon struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev); 27777e50769cSMichal Kalderon int rc; 27787e50769cSMichal Kalderon 27790a7fb11cSYuval Mintz if (!cdev->ll2) 27800a7fb11cSYuval Mintz return -EINVAL; 27810a7fb11cSYuval Mintz 27827e50769cSMichal Kalderon rc = qed_ll2_get_stats(p_hwfn, cdev->ll2->handle, stats); 27837e50769cSMichal Kalderon if (rc) { 27847e50769cSMichal Kalderon DP_NOTICE(p_hwfn, "Failed to get LL2 stats\n"); 27857e50769cSMichal Kalderon return rc; 27867e50769cSMichal Kalderon } 27877e50769cSMichal Kalderon 27887e50769cSMichal Kalderon /* In CMT mode, LL2 is always started on engine 0 for a storage PF */ 27897e50769cSMichal Kalderon if (b_is_storage_eng1) { 27907e50769cSMichal Kalderon rc = __qed_ll2_get_stats(QED_LEADING_HWFN(cdev), 27910a7fb11cSYuval Mintz cdev->ll2->handle, stats); 27927e50769cSMichal Kalderon if (rc) { 27937e50769cSMichal Kalderon DP_NOTICE(QED_LEADING_HWFN(cdev), 27947e50769cSMichal Kalderon "Failed to get LL2 stats on engine 0\n"); 27957e50769cSMichal Kalderon return rc; 27967e50769cSMichal Kalderon } 27977e50769cSMichal Kalderon } 27987e50769cSMichal Kalderon 27997e50769cSMichal Kalderon return 0; 28000a7fb11cSYuval Mintz } 28010a7fb11cSYuval Mintz 28020a7fb11cSYuval Mintz const struct qed_ll2_ops qed_ll2_ops_pass = { 28030a7fb11cSYuval Mintz .start = &qed_ll2_start, 28040a7fb11cSYuval Mintz .stop = &qed_ll2_stop, 28050a7fb11cSYuval Mintz .start_xmit = &qed_ll2_start_xmit, 28060a7fb11cSYuval Mintz .register_cb_ops = &qed_ll2_register_cb_ops, 28070a7fb11cSYuval Mintz .get_stats = &qed_ll2_stats, 28080a7fb11cSYuval Mintz }; 28090a7fb11cSYuval Mintz 28100a7fb11cSYuval Mintz int qed_ll2_alloc_if(struct qed_dev *cdev) 28110a7fb11cSYuval Mintz { 28120a7fb11cSYuval Mintz cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); 28130a7fb11cSYuval Mintz return cdev->ll2 ? 0 : -ENOMEM; 28140a7fb11cSYuval Mintz } 28150a7fb11cSYuval Mintz 28160a7fb11cSYuval Mintz void qed_ll2_dealloc_if(struct qed_dev *cdev) 28170a7fb11cSYuval Mintz { 28180a7fb11cSYuval Mintz kfree(cdev->ll2); 28190a7fb11cSYuval Mintz cdev->ll2 = NULL; 28200a7fb11cSYuval Mintz } 2821