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 /* Up to 2^16 XRC Domains are supported, but the actual number of supported XRC 66 * SRQs is much smaller so there's no need to have that many domains. 67 */ 68 #define QED_RDMA_MAX_XRCDS (roundup_pow_of_two(RDMA_MAX_XRC_SRQS)) 69 70 enum qed_rdma_toggle_bit { 71 QED_RDMA_TOGGLE_BIT_CLEAR = 0, 72 QED_RDMA_TOGGLE_BIT_SET = 1 73 }; 74 75 #define QED_RDMA_MAX_BMAP_NAME (10) 76 struct qed_bmap { 77 unsigned long *bitmap; 78 u32 max_count; 79 char name[QED_RDMA_MAX_BMAP_NAME]; 80 }; 81 82 struct qed_rdma_info { 83 /* spin lock to protect bitmaps */ 84 spinlock_t lock; 85 86 struct qed_bmap cq_map; 87 struct qed_bmap pd_map; 88 struct qed_bmap xrcd_map; 89 struct qed_bmap tid_map; 90 struct qed_bmap qp_map; 91 struct qed_bmap srq_map; 92 struct qed_bmap xrc_srq_map; 93 struct qed_bmap cid_map; 94 struct qed_bmap tcp_cid_map; 95 struct qed_bmap real_cid_map; 96 struct qed_bmap dpi_map; 97 struct qed_bmap toggle_bits; 98 struct qed_rdma_events events; 99 struct qed_rdma_device *dev; 100 struct qed_rdma_port *port; 101 u32 last_tid; 102 u8 num_cnqs; 103 u32 num_qps; 104 u32 num_mrs; 105 u32 num_srqs; 106 u16 srq_id_offset; 107 u16 queue_zone_base; 108 u16 max_queue_zones; 109 enum protocol_type proto; 110 struct qed_iwarp_info iwarp; 111 u8 active:1; 112 }; 113 114 struct qed_rdma_qp { 115 struct regpair qp_handle; 116 struct regpair qp_handle_async; 117 u32 qpid; 118 u16 icid; 119 enum qed_roce_qp_state cur_state; 120 enum qed_rdma_qp_type qp_type; 121 enum qed_iwarp_qp_state iwarp_state; 122 bool use_srq; 123 bool signal_all; 124 bool fmr_and_reserved_lkey; 125 126 bool incoming_rdma_read_en; 127 bool incoming_rdma_write_en; 128 bool incoming_atomic_en; 129 bool e2e_flow_control_en; 130 131 u16 pd; 132 u16 pkey; 133 u32 dest_qp; 134 u16 mtu; 135 u16 srq_id; 136 u8 traffic_class_tos; 137 u8 hop_limit_ttl; 138 u16 dpi; 139 u32 flow_label; 140 bool lb_indication; 141 u16 vlan_id; 142 u32 ack_timeout; 143 u8 retry_cnt; 144 u8 rnr_retry_cnt; 145 u8 min_rnr_nak_timer; 146 bool sqd_async; 147 union qed_gid sgid; 148 union qed_gid dgid; 149 enum roce_mode roce_mode; 150 u16 udp_src_port; 151 u8 stats_queue; 152 153 /* requeseter */ 154 u8 max_rd_atomic_req; 155 u32 sq_psn; 156 u16 sq_cq_id; 157 u16 sq_num_pages; 158 dma_addr_t sq_pbl_ptr; 159 void *orq; 160 dma_addr_t orq_phys_addr; 161 u8 orq_num_pages; 162 bool req_offloaded; 163 bool has_req; 164 165 /* responder */ 166 u8 max_rd_atomic_resp; 167 u32 rq_psn; 168 u16 rq_cq_id; 169 u16 rq_num_pages; 170 u16 xrcd_id; 171 dma_addr_t rq_pbl_ptr; 172 void *irq; 173 dma_addr_t irq_phys_addr; 174 u8 irq_num_pages; 175 bool resp_offloaded; 176 u32 cq_prod; 177 bool has_resp; 178 179 u8 remote_mac_addr[6]; 180 u8 local_mac_addr[6]; 181 182 void *shared_queue; 183 dma_addr_t shared_queue_phys_addr; 184 struct qed_iwarp_ep *ep; 185 u8 edpm_mode; 186 }; 187 188 static inline bool qed_rdma_is_xrc_qp(struct qed_rdma_qp *qp) 189 { 190 if (qp->qp_type == QED_RDMA_QP_TYPE_XRC_TGT || 191 qp->qp_type == QED_RDMA_QP_TYPE_XRC_INI) 192 return true; 193 194 return false; 195 } 196 #if IS_ENABLED(CONFIG_QED_RDMA) 197 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 198 void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 199 int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn); 200 void qed_rdma_info_free(struct qed_hwfn *p_hwfn); 201 #else 202 static inline void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {} 203 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, 204 struct qed_ptt *p_ptt) {} 205 static inline int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn) {return -EINVAL;} 206 static inline void qed_rdma_info_free(struct qed_hwfn *p_hwfn) {} 207 #endif 208 209 int 210 qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn, 211 struct qed_bmap *bmap, u32 max_count, char *name); 212 213 void 214 qed_rdma_bmap_free(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, bool check); 215 216 int 217 qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn, 218 struct qed_bmap *bmap, u32 *id_num); 219 220 void 221 qed_bmap_set_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 222 223 void 224 qed_bmap_release_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 225 226 int 227 qed_bmap_test_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num); 228 229 void qed_rdma_set_fw_mac(u16 *p_fw_mac, u8 *p_qed_mac); 230 231 bool qed_rdma_allocated_qps(struct qed_hwfn *p_hwfn); 232 #endif 233