1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2016 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 dpi_map; 86 struct qed_bmap toggle_bits; 87 struct qed_rdma_events events; 88 struct qed_rdma_device *dev; 89 struct qed_rdma_port *port; 90 u32 last_tid; 91 u8 num_cnqs; 92 u32 num_qps; 93 u32 num_mrs; 94 u16 queue_zone_base; 95 enum protocol_type proto; 96 }; 97 98 struct qed_rdma_resize_cq_in_params { 99 u16 icid; 100 u32 cq_size; 101 bool pbl_two_level; 102 u64 pbl_ptr; 103 u16 pbl_num_pages; 104 u8 pbl_page_size_log; 105 }; 106 107 struct qed_rdma_resize_cq_out_params { 108 u32 prod; 109 u32 cons; 110 }; 111 112 struct qed_rdma_resize_cnq_in_params { 113 u32 cnq_id; 114 u32 pbl_page_size_log; 115 u64 pbl_ptr; 116 }; 117 118 struct qed_rdma_qp { 119 struct regpair qp_handle; 120 struct regpair qp_handle_async; 121 u32 qpid; 122 u16 icid; 123 enum qed_roce_qp_state cur_state; 124 bool use_srq; 125 bool signal_all; 126 bool fmr_and_reserved_lkey; 127 128 bool incoming_rdma_read_en; 129 bool incoming_rdma_write_en; 130 bool incoming_atomic_en; 131 bool e2e_flow_control_en; 132 133 u16 pd; 134 u16 pkey; 135 u32 dest_qp; 136 u16 mtu; 137 u16 srq_id; 138 u8 traffic_class_tos; 139 u8 hop_limit_ttl; 140 u16 dpi; 141 u32 flow_label; 142 bool lb_indication; 143 u16 vlan_id; 144 u32 ack_timeout; 145 u8 retry_cnt; 146 u8 rnr_retry_cnt; 147 u8 min_rnr_nak_timer; 148 bool sqd_async; 149 union qed_gid sgid; 150 union qed_gid dgid; 151 enum roce_mode roce_mode; 152 u16 udp_src_port; 153 u8 stats_queue; 154 155 /* requeseter */ 156 u8 max_rd_atomic_req; 157 u32 sq_psn; 158 u16 sq_cq_id; 159 u16 sq_num_pages; 160 dma_addr_t sq_pbl_ptr; 161 void *orq; 162 dma_addr_t orq_phys_addr; 163 u8 orq_num_pages; 164 bool req_offloaded; 165 166 /* responder */ 167 u8 max_rd_atomic_resp; 168 u32 rq_psn; 169 u16 rq_cq_id; 170 u16 rq_num_pages; 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; 176 177 u8 remote_mac_addr[6]; 178 u8 local_mac_addr[6]; 179 180 void *shared_queue; 181 dma_addr_t shared_queue_phys_addr; 182 }; 183 184 int 185 qed_rdma_add_user(void *rdma_cxt, 186 struct qed_rdma_add_user_out_params *out_params); 187 int qed_rdma_alloc_pd(void *rdma_cxt, u16 *pd); 188 int qed_rdma_alloc_tid(void *rdma_cxt, u32 *tid); 189 int qed_rdma_deregister_tid(void *rdma_cxt, u32 tid); 190 void qed_rdma_free_tid(void *rdma_cxt, u32 tid); 191 struct qed_rdma_device *qed_rdma_query_device(void *rdma_cxt); 192 struct qed_rdma_port *qed_rdma_query_port(void *rdma_cxt); 193 int 194 qed_rdma_register_tid(void *rdma_cxt, 195 struct qed_rdma_register_tid_in_params *params); 196 void qed_rdma_remove_user(void *rdma_cxt, u16 dpi); 197 int qed_rdma_start(void *p_hwfn, struct qed_rdma_start_in_params *params); 198 int qed_rdma_stop(void *rdma_cxt); 199 u32 qed_rdma_get_sb_id(void *p_hwfn, u32 rel_sb_id); 200 u32 qed_rdma_query_cau_timer_res(void *p_hwfn); 201 void qed_rdma_cnq_prod_update(void *rdma_cxt, u8 cnq_index, u16 prod); 202 void qed_rdma_resc_free(struct qed_hwfn *p_hwfn); 203 void qed_async_roce_event(struct qed_hwfn *p_hwfn, 204 struct event_ring_entry *p_eqe); 205 int qed_rdma_destroy_qp(void *rdma_cxt, struct qed_rdma_qp *qp); 206 int qed_rdma_modify_qp(void *rdma_cxt, struct qed_rdma_qp *qp, 207 struct qed_rdma_modify_qp_in_params *params); 208 int qed_rdma_query_qp(void *rdma_cxt, struct qed_rdma_qp *qp, 209 struct qed_rdma_query_qp_out_params *out_params); 210 211 #if IS_ENABLED(CONFIG_INFINIBAND_QEDR) 212 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 213 #else 214 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {} 215 #endif 216 #endif 217