drivers/infiniband/hw/mlx4/mlx4_ib.h

   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         unsigned                sq_next_wqe;
 124         int                     sq_max_wqes_per_wr;
 125         int                     sq_spare_wqes;
 126         struct mlx4_ib_wq       sq;
 127
 128         struct ib_umem         *umem;
 129         struct mlx4_mtt         mtt;
 130         int                     buf_size;
 131         struct mutex            mutex;
 132         u8                      port;
 133         u8                      alt_port;
 134         u8                      atomic_rd_en;
 135         u8                      resp_depth;
 136         u8                      sq_no_prefetch;
 137         u8                      state;
 138 };
 139
 140 struct mlx4_ib_srq {
 141         struct ib_srq           ibsrq;
 142         struct mlx4_srq         msrq;
 143         struct mlx4_buf         buf;
 144         struct mlx4_ib_db       db;
 145         u64                    *wrid;
 146         spinlock_t              lock;
 147         int                     head;
 148         int                     tail;
 149         u16                     wqe_ctr;
 150         struct ib_umem         *umem;
 151         struct mlx4_mtt         mtt;
 152         struct mutex            mutex;
 153 };
 154
 155 struct mlx4_ib_ah {
 156         struct ib_ah            ibah;
 157         struct mlx4_av          av;
 158 };
 159
 160 struct mlx4_ib_dev {
 161         struct ib_device        ib_dev;
 162         struct mlx4_dev        *dev;
 163         void __iomem           *uar_map;
 164
 165         struct list_head        pgdir_list;
 166         struct mutex            pgdir_mutex;
 167
 168         struct mlx4_uar         priv_uar;
 169         u32                     priv_pdn;
 170         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 171
 172         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 173         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 174         spinlock_t              sm_lock;
 175
 176         struct mutex            cap_mask_mutex;
 177 };
 178
 179 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 180 {
 181         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 182 }
 183
 184 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 185 {
 186         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 187 }
 188
 189 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 190 {
 191         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 192 }
 193
 194 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 195 {
 196         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 197 }
 198
 199 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 200 {
 201         return container_of(mcq, struct mlx4_ib_cq, mcq);
 202 }
 203
 204 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 205 {
 206         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 207 }
 208
 209 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 210 {
 211         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 212 }
 213 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 214 {
 215         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 216 }
 217
 218 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 219 {
 220         return container_of(mqp, struct mlx4_ib_qp, mqp);
 221 }
 222
 223 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 224 {
 225         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 226 }
 227
 228 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 229 {
 230         return container_of(msrq, struct mlx4_ib_srq, msrq);
 231 }
 232
 233 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 234 {
 235         return container_of(ibah, struct mlx4_ib_ah, ibah);
 236 }
 237
 238 int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
 239 void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
 240 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 241                         struct mlx4_ib_db *db);
 242 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
 243
 244 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 245 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 246                            struct ib_umem *umem);
 247 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 248                                   u64 virt_addr, int access_flags,
 249                                   struct ib_udata *udata);
 250 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 251
 252 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 253                                 struct ib_ucontext *context,
 254                                 struct ib_udata *udata);
 255 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 256 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 257 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 258 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 259 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 260
 261 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 262 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 263 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 264
 265 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 266                                   struct ib_srq_init_attr *init_attr,
 267                                   struct ib_udata *udata);
 268 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 269                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 270 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 271 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 272 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 273 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 274                           struct ib_recv_wr **bad_wr);
 275
 276 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 277                                 struct ib_qp_init_attr *init_attr,
 278                                 struct ib_udata *udata);
 279 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 280 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 281                       int attr_mask, struct ib_udata *udata);
 282 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 283                      struct ib_qp_init_attr *qp_init_attr);
 284 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 285                       struct ib_send_wr **bad_wr);
 286 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 287                       struct ib_recv_wr **bad_wr);
 288
 289 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 290                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 291                  void *in_mad, void *response_mad);
 292 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 293                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 294                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 295 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 296 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 297
 298 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 299                                   struct ib_fmr_attr *fmr_attr);
 300 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 301                          u64 iova);
 302 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 303 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 304
 305 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 306 {
 307         return !!(ah->av.g_slid & 0x80);
 308 }
 309
 310 #endif /* MLX4_IB_H */