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 #include <linux/mutex.h> 39 40 #include <rdma/ib_verbs.h> 41 #include <rdma/ib_umem.h> 42 43 #include <linux/mlx4/device.h> 44 #include <linux/mlx4/doorbell.h> 45 46 enum { 47 MLX4_IB_DB_PER_PAGE = PAGE_SIZE / 4 48 }; 49 50 struct mlx4_ib_db_pgdir; 51 struct mlx4_ib_user_db_page; 52 53 struct mlx4_ib_db { 54 __be32 *db; 55 union { 56 struct mlx4_ib_db_pgdir *pgdir; 57 struct mlx4_ib_user_db_page *user_page; 58 } u; 59 dma_addr_t dma; 60 int index; 61 int order; 62 }; 63 64 struct mlx4_ib_ucontext { 65 struct ib_ucontext ibucontext; 66 struct mlx4_uar uar; 67 struct list_head db_page_list; 68 struct mutex db_page_mutex; 69 }; 70 71 struct mlx4_ib_pd { 72 struct ib_pd ibpd; 73 u32 pdn; 74 }; 75 76 struct mlx4_ib_cq_buf { 77 struct mlx4_buf buf; 78 struct mlx4_mtt mtt; 79 }; 80 81 struct mlx4_ib_cq { 82 struct ib_cq ibcq; 83 struct mlx4_cq mcq; 84 struct mlx4_ib_cq_buf buf; 85 struct mlx4_ib_db db; 86 spinlock_t lock; 87 struct ib_umem *umem; 88 }; 89 90 struct mlx4_ib_mr { 91 struct ib_mr ibmr; 92 struct mlx4_mr mmr; 93 struct ib_umem *umem; 94 }; 95 96 struct mlx4_ib_fmr { 97 struct ib_fmr ibfmr; 98 struct mlx4_fmr mfmr; 99 }; 100 101 struct mlx4_ib_wq { 102 u64 *wrid; 103 spinlock_t lock; 104 int wqe_cnt; 105 int max_post; 106 int max_gs; 107 int offset; 108 int wqe_shift; 109 unsigned head; 110 unsigned tail; 111 }; 112 113 struct mlx4_ib_qp { 114 struct ib_qp ibqp; 115 struct mlx4_qp mqp; 116 struct mlx4_buf buf; 117 118 struct mlx4_ib_db db; 119 struct mlx4_ib_wq rq; 120 121 u32 doorbell_qpn; 122 __be32 sq_signal_bits; 123 int sq_spare_wqes; 124 struct mlx4_ib_wq sq; 125 126 struct ib_umem *umem; 127 struct mlx4_mtt mtt; 128 int buf_size; 129 struct mutex mutex; 130 u8 port; 131 u8 alt_port; 132 u8 atomic_rd_en; 133 u8 resp_depth; 134 u8 sq_no_prefetch; 135 u8 state; 136 }; 137 138 struct mlx4_ib_srq { 139 struct ib_srq ibsrq; 140 struct mlx4_srq msrq; 141 struct mlx4_buf buf; 142 struct mlx4_ib_db db; 143 u64 *wrid; 144 spinlock_t lock; 145 int head; 146 int tail; 147 u16 wqe_ctr; 148 struct ib_umem *umem; 149 struct mlx4_mtt mtt; 150 struct mutex mutex; 151 }; 152 153 struct mlx4_ib_ah { 154 struct ib_ah ibah; 155 struct mlx4_av av; 156 }; 157 158 struct mlx4_ib_dev { 159 struct ib_device ib_dev; 160 struct mlx4_dev *dev; 161 void __iomem *uar_map; 162 163 struct list_head pgdir_list; 164 struct mutex pgdir_mutex; 165 166 struct mlx4_uar priv_uar; 167 u32 priv_pdn; 168 MLX4_DECLARE_DOORBELL_LOCK(uar_lock); 169 170 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2]; 171 struct ib_ah *sm_ah[MLX4_MAX_PORTS]; 172 spinlock_t sm_lock; 173 174 struct mutex cap_mask_mutex; 175 }; 176 177 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) 178 { 179 return container_of(ibdev, struct mlx4_ib_dev, ib_dev); 180 } 181 182 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext) 183 { 184 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext); 185 } 186 187 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd) 188 { 189 return container_of(ibpd, struct mlx4_ib_pd, ibpd); 190 } 191 192 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq) 193 { 194 return container_of(ibcq, struct mlx4_ib_cq, ibcq); 195 } 196 197 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq) 198 { 199 return container_of(mcq, struct mlx4_ib_cq, mcq); 200 } 201 202 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr) 203 { 204 return container_of(ibmr, struct mlx4_ib_mr, ibmr); 205 } 206 207 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr) 208 { 209 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr); 210 } 211 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp) 212 { 213 return container_of(ibqp, struct mlx4_ib_qp, ibqp); 214 } 215 216 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp) 217 { 218 return container_of(mqp, struct mlx4_ib_qp, mqp); 219 } 220 221 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq) 222 { 223 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq); 224 } 225 226 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq) 227 { 228 return container_of(msrq, struct mlx4_ib_srq, msrq); 229 } 230 231 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah) 232 { 233 return container_of(ibah, struct mlx4_ib_ah, ibah); 234 } 235 236 int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order); 237 void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db); 238 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, 239 struct mlx4_ib_db *db); 240 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db); 241 242 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc); 243 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, 244 struct ib_umem *umem); 245 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 246 u64 virt_addr, int access_flags, 247 struct ib_udata *udata); 248 int mlx4_ib_dereg_mr(struct ib_mr *mr); 249 250 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector, 251 struct ib_ucontext *context, 252 struct ib_udata *udata); 253 int mlx4_ib_destroy_cq(struct ib_cq *cq); 254 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 255 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); 256 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 257 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 258 259 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 260 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr); 261 int mlx4_ib_destroy_ah(struct ib_ah *ah); 262 263 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, 264 struct ib_srq_init_attr *init_attr, 265 struct ib_udata *udata); 266 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 267 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); 268 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr); 269 int mlx4_ib_destroy_srq(struct ib_srq *srq); 270 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index); 271 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 272 struct ib_recv_wr **bad_wr); 273 274 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 275 struct ib_qp_init_attr *init_attr, 276 struct ib_udata *udata); 277 int mlx4_ib_destroy_qp(struct ib_qp *qp); 278 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 279 int attr_mask, struct ib_udata *udata); 280 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, 281 struct ib_qp_init_attr *qp_init_attr); 282 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 283 struct ib_send_wr **bad_wr); 284 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 285 struct ib_recv_wr **bad_wr); 286 287 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey, 288 int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 289 void *in_mad, void *response_mad); 290 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 291 struct ib_wc *in_wc, struct ib_grh *in_grh, 292 struct ib_mad *in_mad, struct ib_mad *out_mad); 293 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev); 294 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev); 295 296 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags, 297 struct ib_fmr_attr *fmr_attr); 298 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages, 299 u64 iova); 300 int mlx4_ib_unmap_fmr(struct list_head *fmr_list); 301 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr); 302 303 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah) 304 { 305 return !!(ah->av.g_slid & 0x80); 306 } 307 308 #endif /* MLX4_IB_H */ 309