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_RDMA_H 33 #define _QED_RDMA_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_rdma_if.h> 42 #include "qed.h" 43 #include "qed_dev_api.h" 44 #include "qed_hsi.h" 45 #include "qed_iwarp.h" 46 #include "qed_roce.h" 47 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 #define QED_RDMA_MAX_BMAP_NAME (10) 71 struct qed_bmap { 72 unsigned long *bitmap; 73 u32 max_count; 74 char name[QED_RDMA_MAX_BMAP_NAME]; 75 }; 76 77 struct qed_rdma_info { 78 /* spin lock to protect bitmaps */ 79 spinlock_t lock; 80 81 struct qed_bmap cq_map; 82 struct qed_bmap pd_map; 83 struct qed_bmap tid_map; 84 struct qed_bmap qp_map; 85 struct qed_bmap srq_map; 86 struct qed_bmap cid_map; 87 struct qed_bmap tcp_cid_map; 88 struct qed_bmap real_cid_map; 89 struct qed_bmap dpi_map; 90 struct qed_bmap toggle_bits; 91 struct qed_rdma_events events; 92 struct qed_rdma_device *dev; 93 struct qed_rdma_port *port; 94 u32 last_tid; 95 u8 num_cnqs; 96 u32 num_qps; 97 u32 num_mrs; 98 u32 num_srqs; 99 u16 srq_id_offset; 100 u16 queue_zone_base; 101 u16 max_queue_zones; 102 enum protocol_type proto; 103 struct qed_iwarp_info iwarp; 104 u8 active:1; 105 }; 106 107 struct qed_rdma_qp { 108 struct regpair qp_handle; 109 struct regpair qp_handle_async; 110 u32 qpid; 111 u16 icid; 112 enum qed_roce_qp_state cur_state; 113 enum qed_iwarp_qp_state iwarp_state; 114 bool use_srq; 115 bool signal_all; 116 bool fmr_and_reserved_lkey; 117 118 bool incoming_rdma_read_en; 119 bool incoming_rdma_write_en; 120 bool incoming_atomic_en; 121 bool e2e_flow_control_en; 122 123 u16 pd; 124 u16 pkey; 125 u32 dest_qp; 126 u16 mtu; 127 u16 srq_id; 128 u8 traffic_class_tos; 129 u8 hop_limit_ttl; 130 u16 dpi; 131 u32 flow_label; 132 bool lb_indication; 133 u16 vlan_id; 134 u32 ack_timeout; 135 u8 retry_cnt; 136 u8 rnr_retry_cnt; 137 u8 min_rnr_nak_timer; 138 bool sqd_async; 139 union qed_gid sgid; 140 union qed_gid dgid; 141 enum roce_mode roce_mode; 142 u16 udp_src_port; 143 u8 stats_queue; 144 145 /* requeseter */ 146 u8 max_rd_atomic_req; 147 u32 sq_psn; 148 u16 sq_cq_id; 149 u16 sq_num_pages; 150 dma_addr_t sq_pbl_ptr; 151 void *orq; 152 dma_addr_t orq_phys_addr; 153 u8 orq_num_pages; 154 bool req_offloaded; 155 156 /* responder */ 157 u8 max_rd_atomic_resp; 158 u32 rq_psn; 159 u16 rq_cq_id; 160 u16 rq_num_pages; 161 dma_addr_t rq_pbl_ptr; 162 void *irq; 163 dma_addr_t irq_phys_addr; 164 u8 irq_num_pages; 165 bool resp_offloaded; 166 u32 cq_prod; 167 168 u8 remote_mac_addr[6]; 169 u8 local_mac_addr[6]; 170 171 void *shared_queue; 172 dma_addr_t shared_queue_phys_addr; 173 struct qed_iwarp_ep *ep; 174 }; 175 176 #if IS_ENABLED(CONFIG_QED_RDMA) 177 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 178 void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 179 int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn); 180 void qed_rdma_info_free(struct qed_hwfn *p_hwfn); 181 #else 182 static inline void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {} 183 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, 184 struct qed_ptt *p_ptt) {} 185 static inline int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn) {return -EINVAL;} 186 static inline void qed_rdma_info_free(struct qed_hwfn *p_hwfn) {} 187 #endif 188 189 int 190 qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn, 191 struct qed_bmap *bmap, u32 max_count, char *name); 192 193 void 194 qed_rdma_bmap_free(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, bool check); 195 196 int 197 qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn, 198 struct qed_bmap *bmap, u32 *id_num); 199 200 void 201 qed_bmap_set_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 202 203 void 204 qed_bmap_release_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 205 206 int 207 qed_bmap_test_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 208 209 void qed_rdma_set_fw_mac(u16 *p_fw_mac, u8 *p_qed_mac); 210 211 bool qed_rdma_allocated_qps(struct qed_hwfn *p_hwfn); 212 #endif 213