1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #ifndef _QED_ROCE_H 33 #define _QED_ROCE_H 34 #include <linux/types.h> 35 #include <linux/bitops.h> 36 #include <linux/kernel.h> 37 #include <linux/list.h> 38 #include <linux/slab.h> 39 #include <linux/spinlock.h> 40 #include <linux/qed/qed_if.h> 41 #include <linux/qed/qed_roce_if.h> 42 #include "qed.h" 43 #include "qed_dev_api.h" 44 #include "qed_hsi.h" 45 #include "qed_ll2.h" 46 47 #define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS) 48 #define QED_RDMA_MAX_P_KEY (1) 49 #define QED_RDMA_MAX_WQE (0x7FFF) 50 #define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF) 51 #define QED_RDMA_PAGE_SIZE_CAPS (0xFFFFF000) 52 #define QED_RDMA_ACK_DELAY (15) 53 #define QED_RDMA_MAX_MR_SIZE (0x10000000000ULL) 54 #define QED_RDMA_MAX_CQS (RDMA_MAX_CQS) 55 #define QED_RDMA_MAX_MRS (RDMA_MAX_TIDS) 56 /* Add 1 for header element */ 57 #define QED_RDMA_MAX_SRQ_ELEM_PER_WQE (RDMA_MAX_SGE_PER_RQ_WQE + 1) 58 #define QED_RDMA_MAX_SGE_PER_SRQ_WQE (RDMA_MAX_SGE_PER_RQ_WQE) 59 #define QED_RDMA_SRQ_WQE_ELEM_SIZE (16) 60 #define QED_RDMA_MAX_SRQS (32 * 1024) 61 62 #define QED_RDMA_MAX_CQE_32_BIT (0x7FFFFFFF - 1) 63 #define QED_RDMA_MAX_CQE_16_BIT (0x7FFF - 1) 64 65 enum qed_rdma_toggle_bit { 66 QED_RDMA_TOGGLE_BIT_CLEAR = 0, 67 QED_RDMA_TOGGLE_BIT_SET = 1 68 }; 69 70 struct qed_bmap { 71 unsigned long *bitmap; 72 u32 max_count; 73 }; 74 75 struct qed_rdma_info { 76 /* spin lock to protect bitmaps */ 77 spinlock_t lock; 78 79 struct qed_bmap cq_map; 80 struct qed_bmap pd_map; 81 struct qed_bmap tid_map; 82 struct qed_bmap qp_map; 83 struct qed_bmap srq_map; 84 struct qed_bmap cid_map; 85 struct qed_bmap real_cid_map; 86 struct qed_bmap dpi_map; 87 struct qed_bmap toggle_bits; 88 struct qed_rdma_events events; 89 struct qed_rdma_device *dev; 90 struct qed_rdma_port *port; 91 u32 last_tid; 92 u8 num_cnqs; 93 u32 num_qps; 94 u32 num_mrs; 95 u16 queue_zone_base; 96 u16 max_queue_zones; 97 enum protocol_type proto; 98 }; 99 100 struct qed_rdma_qp { 101 struct regpair qp_handle; 102 struct regpair qp_handle_async; 103 u32 qpid; 104 u16 icid; 105 enum qed_roce_qp_state cur_state; 106 bool use_srq; 107 bool signal_all; 108 bool fmr_and_reserved_lkey; 109 110 bool incoming_rdma_read_en; 111 bool incoming_rdma_write_en; 112 bool incoming_atomic_en; 113 bool e2e_flow_control_en; 114 115 u16 pd; 116 u16 pkey; 117 u32 dest_qp; 118 u16 mtu; 119 u16 srq_id; 120 u8 traffic_class_tos; 121 u8 hop_limit_ttl; 122 u16 dpi; 123 u32 flow_label; 124 bool lb_indication; 125 u16 vlan_id; 126 u32 ack_timeout; 127 u8 retry_cnt; 128 u8 rnr_retry_cnt; 129 u8 min_rnr_nak_timer; 130 bool sqd_async; 131 union qed_gid sgid; 132 union qed_gid dgid; 133 enum roce_mode roce_mode; 134 u16 udp_src_port; 135 u8 stats_queue; 136 137 /* requeseter */ 138 u8 max_rd_atomic_req; 139 u32 sq_psn; 140 u16 sq_cq_id; 141 u16 sq_num_pages; 142 dma_addr_t sq_pbl_ptr; 143 void *orq; 144 dma_addr_t orq_phys_addr; 145 u8 orq_num_pages; 146 bool req_offloaded; 147 148 /* responder */ 149 u8 max_rd_atomic_resp; 150 u32 rq_psn; 151 u16 rq_cq_id; 152 u16 rq_num_pages; 153 dma_addr_t rq_pbl_ptr; 154 void *irq; 155 dma_addr_t irq_phys_addr; 156 u8 irq_num_pages; 157 bool resp_offloaded; 158 u32 cq_prod; 159 160 u8 remote_mac_addr[6]; 161 u8 local_mac_addr[6]; 162 163 void *shared_queue; 164 dma_addr_t shared_queue_phys_addr; 165 }; 166 167 #if IS_ENABLED(CONFIG_QED_RDMA) 168 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 169 void qed_roce_async_event(struct qed_hwfn *p_hwfn, 170 u8 fw_event_code, union rdma_eqe_data *rdma_data); 171 void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn, 172 u8 connection_handle, 173 void *cookie, 174 dma_addr_t first_frag_addr, 175 bool b_last_fragment, bool b_last_packet); 176 void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn, 177 u8 connection_handle, 178 void *cookie, 179 dma_addr_t first_frag_addr, 180 bool b_last_fragment, bool b_last_packet); 181 void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn, 182 u8 connection_handle, 183 void *cookie, 184 dma_addr_t rx_buf_addr, 185 u16 data_length, 186 u8 data_length_error, 187 u16 parse_flags, 188 u16 vlan, 189 u32 src_mac_addr_hi, 190 u16 src_mac_addr_lo, bool b_last_packet); 191 #else 192 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {} 193 static inline void qed_roce_async_event(struct qed_hwfn *p_hwfn, 194 u8 fw_event_code, 195 union rdma_eqe_data *rdma_data) {} 196 static inline void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn, 197 u8 connection_handle, 198 void *cookie, 199 dma_addr_t first_frag_addr, 200 bool b_last_fragment, 201 bool b_last_packet) {} 202 static inline void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn, 203 u8 connection_handle, 204 void *cookie, 205 dma_addr_t first_frag_addr, 206 bool b_last_fragment, 207 bool b_last_packet) {} 208 static inline void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn, 209 u8 connection_handle, 210 void *cookie, 211 dma_addr_t rx_buf_addr, 212 u16 data_length, 213 u8 data_length_error, 214 u16 parse_flags, 215 u16 vlan, 216 u32 src_mac_addr_hi, 217 u16 src_mac_addr_lo, 218 bool b_last_packet) {} 219 #endif 220 #endif 221