1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef MLX4_IB_H 35 #define MLX4_IB_H 36 37 #include <linux/compiler.h> 38 #include <linux/list.h> 39 #include <linux/mutex.h> 40 41 #include <rdma/ib_verbs.h> 42 #include <rdma/ib_umem.h> 43 44 #include <linux/mlx4/device.h> 45 #include <linux/mlx4/doorbell.h> 46 47 struct mlx4_ib_ucontext { 48 struct ib_ucontext ibucontext; 49 struct mlx4_uar uar; 50 struct list_head db_page_list; 51 struct mutex db_page_mutex; 52 }; 53 54 struct mlx4_ib_pd { 55 struct ib_pd ibpd; 56 u32 pdn; 57 }; 58 59 struct mlx4_ib_xrcd { 60 struct ib_xrcd ibxrcd; 61 u32 xrcdn; 62 struct ib_pd *pd; 63 struct ib_cq *cq; 64 }; 65 66 struct mlx4_ib_cq_buf { 67 struct mlx4_buf buf; 68 struct mlx4_mtt mtt; 69 }; 70 71 struct mlx4_ib_cq_resize { 72 struct mlx4_ib_cq_buf buf; 73 int cqe; 74 }; 75 76 struct mlx4_ib_cq { 77 struct ib_cq ibcq; 78 struct mlx4_cq mcq; 79 struct mlx4_ib_cq_buf buf; 80 struct mlx4_ib_cq_resize *resize_buf; 81 struct mlx4_db db; 82 spinlock_t lock; 83 struct mutex resize_mutex; 84 struct ib_umem *umem; 85 struct ib_umem *resize_umem; 86 }; 87 88 struct mlx4_ib_mr { 89 struct ib_mr ibmr; 90 struct mlx4_mr mmr; 91 struct ib_umem *umem; 92 }; 93 94 struct mlx4_ib_fast_reg_page_list { 95 struct ib_fast_reg_page_list ibfrpl; 96 __be64 *mapped_page_list; 97 dma_addr_t map; 98 }; 99 100 struct mlx4_ib_fmr { 101 struct ib_fmr ibfmr; 102 struct mlx4_fmr mfmr; 103 }; 104 105 struct mlx4_ib_wq { 106 u64 *wrid; 107 spinlock_t lock; 108 int wqe_cnt; 109 int max_post; 110 int max_gs; 111 int offset; 112 int wqe_shift; 113 unsigned head; 114 unsigned tail; 115 }; 116 117 enum mlx4_ib_qp_flags { 118 MLX4_IB_QP_LSO = 1 << 0, 119 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1, 120 }; 121 122 struct mlx4_ib_gid_entry { 123 struct list_head list; 124 union ib_gid gid; 125 int added; 126 u8 port; 127 }; 128 129 struct mlx4_ib_qp { 130 struct ib_qp ibqp; 131 struct mlx4_qp mqp; 132 struct mlx4_buf buf; 133 134 struct mlx4_db db; 135 struct mlx4_ib_wq rq; 136 137 u32 doorbell_qpn; 138 __be32 sq_signal_bits; 139 unsigned sq_next_wqe; 140 int sq_max_wqes_per_wr; 141 int sq_spare_wqes; 142 struct mlx4_ib_wq sq; 143 144 struct ib_umem *umem; 145 struct mlx4_mtt mtt; 146 int buf_size; 147 struct mutex mutex; 148 u16 xrcdn; 149 u32 flags; 150 u8 port; 151 u8 alt_port; 152 u8 atomic_rd_en; 153 u8 resp_depth; 154 u8 sq_no_prefetch; 155 u8 state; 156 int mlx_type; 157 struct list_head gid_list; 158 }; 159 160 struct mlx4_ib_srq { 161 struct ib_srq ibsrq; 162 struct mlx4_srq msrq; 163 struct mlx4_buf buf; 164 struct mlx4_db db; 165 u64 *wrid; 166 spinlock_t lock; 167 int head; 168 int tail; 169 u16 wqe_ctr; 170 struct ib_umem *umem; 171 struct mlx4_mtt mtt; 172 struct mutex mutex; 173 }; 174 175 struct mlx4_ib_ah { 176 struct ib_ah ibah; 177 union mlx4_ext_av av; 178 }; 179 180 struct mlx4_ib_iboe { 181 spinlock_t lock; 182 struct net_device *netdevs[MLX4_MAX_PORTS]; 183 struct notifier_block nb; 184 union ib_gid gid_table[MLX4_MAX_PORTS][128]; 185 }; 186 187 struct mlx4_ib_dev { 188 struct ib_device ib_dev; 189 struct mlx4_dev *dev; 190 int num_ports; 191 void __iomem *uar_map; 192 193 struct mlx4_uar priv_uar; 194 u32 priv_pdn; 195 MLX4_DECLARE_DOORBELL_LOCK(uar_lock); 196 197 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2]; 198 struct ib_ah *sm_ah[MLX4_MAX_PORTS]; 199 spinlock_t sm_lock; 200 201 struct mutex cap_mask_mutex; 202 bool ib_active; 203 struct mlx4_ib_iboe iboe; 204 int counters[MLX4_MAX_PORTS]; 205 }; 206 207 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) 208 { 209 return container_of(ibdev, struct mlx4_ib_dev, ib_dev); 210 } 211 212 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext) 213 { 214 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext); 215 } 216 217 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd) 218 { 219 return container_of(ibpd, struct mlx4_ib_pd, ibpd); 220 } 221 222 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd) 223 { 224 return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd); 225 } 226 227 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq) 228 { 229 return container_of(ibcq, struct mlx4_ib_cq, ibcq); 230 } 231 232 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq) 233 { 234 return container_of(mcq, struct mlx4_ib_cq, mcq); 235 } 236 237 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr) 238 { 239 return container_of(ibmr, struct mlx4_ib_mr, ibmr); 240 } 241 242 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl) 243 { 244 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl); 245 } 246 247 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr) 248 { 249 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr); 250 } 251 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp) 252 { 253 return container_of(ibqp, struct mlx4_ib_qp, ibqp); 254 } 255 256 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp) 257 { 258 return container_of(mqp, struct mlx4_ib_qp, mqp); 259 } 260 261 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq) 262 { 263 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq); 264 } 265 266 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq) 267 { 268 return container_of(msrq, struct mlx4_ib_srq, msrq); 269 } 270 271 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah) 272 { 273 return container_of(ibah, struct mlx4_ib_ah, ibah); 274 } 275 276 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, 277 struct mlx4_db *db); 278 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db); 279 280 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc); 281 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, 282 struct ib_umem *umem); 283 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 284 u64 virt_addr, int access_flags, 285 struct ib_udata *udata); 286 int mlx4_ib_dereg_mr(struct ib_mr *mr); 287 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd, 288 int max_page_list_len); 289 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, 290 int page_list_len); 291 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list); 292 293 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); 294 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata); 295 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector, 296 struct ib_ucontext *context, 297 struct ib_udata *udata); 298 int mlx4_ib_destroy_cq(struct ib_cq *cq); 299 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 300 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); 301 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 302 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 303 304 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 305 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr); 306 int mlx4_ib_destroy_ah(struct ib_ah *ah); 307 308 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, 309 struct ib_srq_init_attr *init_attr, 310 struct ib_udata *udata); 311 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 312 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); 313 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr); 314 int mlx4_ib_destroy_srq(struct ib_srq *srq); 315 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index); 316 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 317 struct ib_recv_wr **bad_wr); 318 319 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 320 struct ib_qp_init_attr *init_attr, 321 struct ib_udata *udata); 322 int mlx4_ib_destroy_qp(struct ib_qp *qp); 323 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 324 int attr_mask, struct ib_udata *udata); 325 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, 326 struct ib_qp_init_attr *qp_init_attr); 327 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 328 struct ib_send_wr **bad_wr); 329 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 330 struct ib_recv_wr **bad_wr); 331 332 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey, 333 int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 334 void *in_mad, void *response_mad); 335 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 336 struct ib_wc *in_wc, struct ib_grh *in_grh, 337 struct ib_mad *in_mad, struct ib_mad *out_mad); 338 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev); 339 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev); 340 341 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags, 342 struct ib_fmr_attr *fmr_attr); 343 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages, 344 u64 iova); 345 int mlx4_ib_unmap_fmr(struct list_head *fmr_list); 346 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr); 347 348 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr, 349 u8 *mac, int *is_mcast, u8 port); 350 351 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah) 352 { 353 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3; 354 355 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET) 356 return 1; 357 358 return !!(ah->av.ib.g_slid & 0x80); 359 } 360 361 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 362 union ib_gid *gid); 363 364 #endif /* MLX4_IB_H */ 365