1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved. 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 33 #ifndef MLX4_IB_H 34 #define MLX4_IB_H 35 36 #include <linux/compiler.h> 37 #include <linux/list.h> 38 39 #include <rdma/ib_verbs.h> 40 #include <rdma/ib_umem.h> 41 42 #include <linux/mlx4/device.h> 43 #include <linux/mlx4/doorbell.h> 44 45 enum { 46 MLX4_IB_DB_PER_PAGE = PAGE_SIZE / 4 47 }; 48 49 struct mlx4_ib_db_pgdir; 50 struct mlx4_ib_user_db_page; 51 52 struct mlx4_ib_db { 53 __be32 *db; 54 union { 55 struct mlx4_ib_db_pgdir *pgdir; 56 struct mlx4_ib_user_db_page *user_page; 57 } u; 58 dma_addr_t dma; 59 int index; 60 int order; 61 }; 62 63 struct mlx4_ib_ucontext { 64 struct ib_ucontext ibucontext; 65 struct mlx4_uar uar; 66 struct list_head db_page_list; 67 struct mutex db_page_mutex; 68 }; 69 70 struct mlx4_ib_pd { 71 struct ib_pd ibpd; 72 u32 pdn; 73 }; 74 75 struct mlx4_ib_cq_buf { 76 struct mlx4_buf buf; 77 struct mlx4_mtt mtt; 78 }; 79 80 struct mlx4_ib_cq { 81 struct ib_cq ibcq; 82 struct mlx4_cq mcq; 83 struct mlx4_ib_cq_buf buf; 84 struct mlx4_ib_db db; 85 spinlock_t lock; 86 struct ib_umem *umem; 87 }; 88 89 struct mlx4_ib_mr { 90 struct ib_mr ibmr; 91 struct mlx4_mr mmr; 92 struct ib_umem *umem; 93 }; 94 95 struct mlx4_ib_wq { 96 u64 *wrid; 97 spinlock_t lock; 98 int wqe_cnt; 99 int max_post; 100 int max_gs; 101 int offset; 102 int wqe_shift; 103 unsigned head; 104 unsigned tail; 105 }; 106 107 struct mlx4_ib_qp { 108 struct ib_qp ibqp; 109 struct mlx4_qp mqp; 110 struct mlx4_buf buf; 111 112 struct mlx4_ib_db db; 113 struct mlx4_ib_wq rq; 114 115 u32 doorbell_qpn; 116 __be32 sq_signal_bits; 117 int sq_spare_wqes; 118 struct mlx4_ib_wq sq; 119 120 struct ib_umem *umem; 121 struct mlx4_mtt mtt; 122 int buf_size; 123 struct mutex mutex; 124 u8 port; 125 u8 alt_port; 126 u8 atomic_rd_en; 127 u8 resp_depth; 128 u8 sq_no_prefetch; 129 u8 state; 130 }; 131 132 struct mlx4_ib_srq { 133 struct ib_srq ibsrq; 134 struct mlx4_srq msrq; 135 struct mlx4_buf buf; 136 struct mlx4_ib_db db; 137 u64 *wrid; 138 spinlock_t lock; 139 int head; 140 int tail; 141 u16 wqe_ctr; 142 struct ib_umem *umem; 143 struct mlx4_mtt mtt; 144 struct mutex mutex; 145 }; 146 147 struct mlx4_ib_ah { 148 struct ib_ah ibah; 149 struct mlx4_av av; 150 }; 151 152 struct mlx4_ib_dev { 153 struct ib_device ib_dev; 154 struct mlx4_dev *dev; 155 void __iomem *uar_map; 156 157 struct list_head pgdir_list; 158 struct mutex pgdir_mutex; 159 160 struct mlx4_uar priv_uar; 161 u32 priv_pdn; 162 MLX4_DECLARE_DOORBELL_LOCK(uar_lock); 163 164 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2]; 165 struct ib_ah *sm_ah[MLX4_MAX_PORTS]; 166 spinlock_t sm_lock; 167 168 struct mutex cap_mask_mutex; 169 }; 170 171 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) 172 { 173 return container_of(ibdev, struct mlx4_ib_dev, ib_dev); 174 } 175 176 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext) 177 { 178 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext); 179 } 180 181 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd) 182 { 183 return container_of(ibpd, struct mlx4_ib_pd, ibpd); 184 } 185 186 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq) 187 { 188 return container_of(ibcq, struct mlx4_ib_cq, ibcq); 189 } 190 191 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq) 192 { 193 return container_of(mcq, struct mlx4_ib_cq, mcq); 194 } 195 196 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr) 197 { 198 return container_of(ibmr, struct mlx4_ib_mr, ibmr); 199 } 200 201 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp) 202 { 203 return container_of(ibqp, struct mlx4_ib_qp, ibqp); 204 } 205 206 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp) 207 { 208 return container_of(mqp, struct mlx4_ib_qp, mqp); 209 } 210 211 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq) 212 { 213 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq); 214 } 215 216 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq) 217 { 218 return container_of(msrq, struct mlx4_ib_srq, msrq); 219 } 220 221 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah) 222 { 223 return container_of(ibah, struct mlx4_ib_ah, ibah); 224 } 225 226 int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order); 227 void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db); 228 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, 229 struct mlx4_ib_db *db); 230 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db); 231 232 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc); 233 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, 234 struct ib_umem *umem); 235 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 236 u64 virt_addr, int access_flags, 237 struct ib_udata *udata); 238 int mlx4_ib_dereg_mr(struct ib_mr *mr); 239 240 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector, 241 struct ib_ucontext *context, 242 struct ib_udata *udata); 243 int mlx4_ib_destroy_cq(struct ib_cq *cq); 244 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 245 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); 246 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 247 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 248 249 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 250 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr); 251 int mlx4_ib_destroy_ah(struct ib_ah *ah); 252 253 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, 254 struct ib_srq_init_attr *init_attr, 255 struct ib_udata *udata); 256 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 257 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); 258 int mlx4_ib_destroy_srq(struct ib_srq *srq); 259 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index); 260 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 261 struct ib_recv_wr **bad_wr); 262 263 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 264 struct ib_qp_init_attr *init_attr, 265 struct ib_udata *udata); 266 int mlx4_ib_destroy_qp(struct ib_qp *qp); 267 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 268 int attr_mask, struct ib_udata *udata); 269 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 270 struct ib_send_wr **bad_wr); 271 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 272 struct ib_recv_wr **bad_wr); 273 274 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey, 275 int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 276 void *in_mad, void *response_mad); 277 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 278 struct ib_wc *in_wc, struct ib_grh *in_grh, 279 struct ib_mad *in_mad, struct ib_mad *out_mad); 280 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev); 281 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev); 282 283 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah) 284 { 285 return !!(ah->av.g_slid & 0x80); 286 } 287 288 #endif /* MLX4_IB_H */ 289