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_cq_buf { 60 struct mlx4_buf buf; 61 struct mlx4_mtt mtt; 62 }; 63 64 struct mlx4_ib_cq_resize { 65 struct mlx4_ib_cq_buf buf; 66 int cqe; 67 }; 68 69 struct mlx4_ib_cq { 70 struct ib_cq ibcq; 71 struct mlx4_cq mcq; 72 struct mlx4_ib_cq_buf buf; 73 struct mlx4_ib_cq_resize *resize_buf; 74 struct mlx4_db db; 75 spinlock_t lock; 76 struct mutex resize_mutex; 77 struct ib_umem *umem; 78 struct ib_umem *resize_umem; 79 }; 80 81 struct mlx4_ib_mr { 82 struct ib_mr ibmr; 83 struct mlx4_mr mmr; 84 struct ib_umem *umem; 85 }; 86 87 struct mlx4_ib_fast_reg_page_list { 88 struct ib_fast_reg_page_list ibfrpl; 89 __be64 *mapped_page_list; 90 dma_addr_t map; 91 }; 92 93 struct mlx4_ib_fmr { 94 struct ib_fmr ibfmr; 95 struct mlx4_fmr mfmr; 96 }; 97 98 struct mlx4_ib_wq { 99 u64 *wrid; 100 spinlock_t lock; 101 int wqe_cnt; 102 int max_post; 103 int max_gs; 104 int offset; 105 int wqe_shift; 106 unsigned head; 107 unsigned tail; 108 }; 109 110 enum mlx4_ib_qp_flags { 111 MLX4_IB_QP_LSO = 1 << 0, 112 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1, 113 }; 114 115 struct mlx4_ib_gid_entry { 116 struct list_head list; 117 union ib_gid gid; 118 int added; 119 u8 port; 120 }; 121 122 struct mlx4_ib_qp { 123 struct ib_qp ibqp; 124 struct mlx4_qp mqp; 125 struct mlx4_buf buf; 126 127 struct mlx4_db db; 128 struct mlx4_ib_wq rq; 129 130 u32 doorbell_qpn; 131 __be32 sq_signal_bits; 132 unsigned sq_next_wqe; 133 int sq_max_wqes_per_wr; 134 int sq_spare_wqes; 135 struct mlx4_ib_wq sq; 136 137 struct ib_umem *umem; 138 struct mlx4_mtt mtt; 139 int buf_size; 140 struct mutex mutex; 141 u32 flags; 142 u8 port; 143 u8 alt_port; 144 u8 atomic_rd_en; 145 u8 resp_depth; 146 u8 sq_no_prefetch; 147 u8 state; 148 int mlx_type; 149 struct list_head gid_list; 150 }; 151 152 struct mlx4_ib_srq { 153 struct ib_srq ibsrq; 154 struct mlx4_srq msrq; 155 struct mlx4_buf buf; 156 struct mlx4_db db; 157 u64 *wrid; 158 spinlock_t lock; 159 int head; 160 int tail; 161 u16 wqe_ctr; 162 struct ib_umem *umem; 163 struct mlx4_mtt mtt; 164 struct mutex mutex; 165 }; 166 167 struct mlx4_ib_ah { 168 struct ib_ah ibah; 169 union mlx4_ext_av av; 170 }; 171 172 struct mlx4_ib_iboe { 173 spinlock_t lock; 174 struct net_device *netdevs[MLX4_MAX_PORTS]; 175 struct notifier_block nb; 176 union ib_gid gid_table[MLX4_MAX_PORTS][128]; 177 }; 178 179 struct mlx4_ib_dev { 180 struct ib_device ib_dev; 181 struct mlx4_dev *dev; 182 int num_ports; 183 void __iomem *uar_map; 184 185 struct mlx4_uar priv_uar; 186 u32 priv_pdn; 187 MLX4_DECLARE_DOORBELL_LOCK(uar_lock); 188 189 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2]; 190 struct ib_ah *sm_ah[MLX4_MAX_PORTS]; 191 spinlock_t sm_lock; 192 193 struct mutex cap_mask_mutex; 194 bool ib_active; 195 struct mlx4_ib_iboe iboe; 196 int counters[MLX4_MAX_PORTS]; 197 }; 198 199 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) 200 { 201 return container_of(ibdev, struct mlx4_ib_dev, ib_dev); 202 } 203 204 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext) 205 { 206 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext); 207 } 208 209 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd) 210 { 211 return container_of(ibpd, struct mlx4_ib_pd, ibpd); 212 } 213 214 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq) 215 { 216 return container_of(ibcq, struct mlx4_ib_cq, ibcq); 217 } 218 219 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq) 220 { 221 return container_of(mcq, struct mlx4_ib_cq, mcq); 222 } 223 224 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr) 225 { 226 return container_of(ibmr, struct mlx4_ib_mr, ibmr); 227 } 228 229 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl) 230 { 231 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl); 232 } 233 234 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr) 235 { 236 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr); 237 } 238 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp) 239 { 240 return container_of(ibqp, struct mlx4_ib_qp, ibqp); 241 } 242 243 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp) 244 { 245 return container_of(mqp, struct mlx4_ib_qp, mqp); 246 } 247 248 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq) 249 { 250 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq); 251 } 252 253 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq) 254 { 255 return container_of(msrq, struct mlx4_ib_srq, msrq); 256 } 257 258 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah) 259 { 260 return container_of(ibah, struct mlx4_ib_ah, ibah); 261 } 262 263 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, 264 struct mlx4_db *db); 265 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db); 266 267 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc); 268 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, 269 struct ib_umem *umem); 270 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 271 u64 virt_addr, int access_flags, 272 struct ib_udata *udata); 273 int mlx4_ib_dereg_mr(struct ib_mr *mr); 274 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd, 275 int max_page_list_len); 276 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, 277 int page_list_len); 278 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list); 279 280 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); 281 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata); 282 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector, 283 struct ib_ucontext *context, 284 struct ib_udata *udata); 285 int mlx4_ib_destroy_cq(struct ib_cq *cq); 286 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 287 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); 288 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 289 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 290 291 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 292 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr); 293 int mlx4_ib_destroy_ah(struct ib_ah *ah); 294 295 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, 296 struct ib_srq_init_attr *init_attr, 297 struct ib_udata *udata); 298 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 299 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); 300 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr); 301 int mlx4_ib_destroy_srq(struct ib_srq *srq); 302 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index); 303 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 304 struct ib_recv_wr **bad_wr); 305 306 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 307 struct ib_qp_init_attr *init_attr, 308 struct ib_udata *udata); 309 int mlx4_ib_destroy_qp(struct ib_qp *qp); 310 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 311 int attr_mask, struct ib_udata *udata); 312 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, 313 struct ib_qp_init_attr *qp_init_attr); 314 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 315 struct ib_send_wr **bad_wr); 316 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 317 struct ib_recv_wr **bad_wr); 318 319 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey, 320 int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 321 void *in_mad, void *response_mad); 322 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 323 struct ib_wc *in_wc, struct ib_grh *in_grh, 324 struct ib_mad *in_mad, struct ib_mad *out_mad); 325 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev); 326 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev); 327 328 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags, 329 struct ib_fmr_attr *fmr_attr); 330 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages, 331 u64 iova); 332 int mlx4_ib_unmap_fmr(struct list_head *fmr_list); 333 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr); 334 335 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr, 336 u8 *mac, int *is_mcast, u8 port); 337 338 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah) 339 { 340 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3; 341 342 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET) 343 return 1; 344 345 return !!(ah->av.ib.g_slid & 0x80); 346 } 347 348 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 349 union ib_gid *gid); 350 351 #endif /* MLX4_IB_H */ 352