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_resize {
  82         struct mlx4_ib_cq_buf   buf;
  83         int                     cqe;
  84 };
  85
  86 struct mlx4_ib_cq {
  87         struct ib_cq            ibcq;
  88         struct mlx4_cq          mcq;
  89         struct mlx4_ib_cq_buf   buf;
  90         struct mlx4_ib_cq_resize *resize_buf;
  91         struct mlx4_ib_db       db;
  92         spinlock_t              lock;
  93         struct mutex            resize_mutex;
  94         struct ib_umem         *umem;
  95         struct ib_umem         *resize_umem;
  96 };
  97
  98 struct mlx4_ib_mr {
  99         struct ib_mr            ibmr;
 100         struct mlx4_mr          mmr;
 101         struct ib_umem         *umem;
 102 };
 103
 104 struct mlx4_ib_fmr {
 105         struct ib_fmr           ibfmr;
 106         struct mlx4_fmr         mfmr;
 107 };
 108
 109 struct mlx4_ib_wq {
 110         u64                    *wrid;
 111         spinlock_t              lock;
 112         int                     wqe_cnt;
 113         int                     max_post;
 114         int                     max_gs;
 115         int                     offset;
 116         int                     wqe_shift;
 117         unsigned                head;
 118         unsigned                tail;
 119 };
 120
 121 enum mlx4_ib_qp_flags {
 122         MLX4_IB_QP_LSO          = 1 << 0
 123 };
 124
 125 struct mlx4_ib_qp {
 126         struct ib_qp            ibqp;
 127         struct mlx4_qp          mqp;
 128         struct mlx4_buf         buf;
 129
 130         struct mlx4_ib_db       db;
 131         struct mlx4_ib_wq       rq;
 132
 133         u32                     doorbell_qpn;
 134         __be32                  sq_signal_bits;
 135         unsigned                sq_next_wqe;
 136         int                     sq_max_wqes_per_wr;
 137         int                     sq_spare_wqes;
 138         struct mlx4_ib_wq       sq;
 139
 140         struct ib_umem         *umem;
 141         struct mlx4_mtt         mtt;
 142         int                     buf_size;
 143         struct mutex            mutex;
 144         u32                     flags;
 145         u8                      port;
 146         u8                      alt_port;
 147         u8                      atomic_rd_en;
 148         u8                      resp_depth;
 149         u8                      sq_no_prefetch;
 150         u8                      state;
 151 };
 152
 153 struct mlx4_ib_srq {
 154         struct ib_srq           ibsrq;
 155         struct mlx4_srq         msrq;
 156         struct mlx4_buf         buf;
 157         struct mlx4_ib_db       db;
 158         u64                    *wrid;
 159         spinlock_t              lock;
 160         int                     head;
 161         int                     tail;
 162         u16                     wqe_ctr;
 163         struct ib_umem         *umem;
 164         struct mlx4_mtt         mtt;
 165         struct mutex            mutex;
 166 };
 167
 168 struct mlx4_ib_ah {
 169         struct ib_ah            ibah;
 170         struct mlx4_av          av;
 171 };
 172
 173 struct mlx4_ib_dev {
 174         struct ib_device        ib_dev;
 175         struct mlx4_dev        *dev;
 176         void __iomem           *uar_map;
 177
 178         struct list_head        pgdir_list;
 179         struct mutex            pgdir_mutex;
 180
 181         struct mlx4_uar         priv_uar;
 182         u32                     priv_pdn;
 183         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 184
 185         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 186         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 187         spinlock_t              sm_lock;
 188
 189         struct mutex            cap_mask_mutex;
 190 };
 191
 192 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 193 {
 194         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 195 }
 196
 197 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 198 {
 199         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 200 }
 201
 202 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 203 {
 204         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 205 }
 206
 207 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 208 {
 209         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 210 }
 211
 212 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 213 {
 214         return container_of(mcq, struct mlx4_ib_cq, mcq);
 215 }
 216
 217 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 218 {
 219         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 220 }
 221
 222 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 223 {
 224         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 225 }
 226 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 227 {
 228         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 229 }
 230
 231 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 232 {
 233         return container_of(mqp, struct mlx4_ib_qp, mqp);
 234 }
 235
 236 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 237 {
 238         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 239 }
 240
 241 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 242 {
 243         return container_of(msrq, struct mlx4_ib_srq, msrq);
 244 }
 245
 246 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 247 {
 248         return container_of(ibah, struct mlx4_ib_ah, ibah);
 249 }
 250
 251 int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
 252 void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
 253 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 254                         struct mlx4_ib_db *db);
 255 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
 256
 257 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 258 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 259                            struct ib_umem *umem);
 260 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 261                                   u64 virt_addr, int access_flags,
 262                                   struct ib_udata *udata);
 263 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 264
 265 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 266 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 267 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 268                                 struct ib_ucontext *context,
 269                                 struct ib_udata *udata);
 270 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 271 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 272 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 273 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 274 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 275
 276 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 277 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 278 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 279
 280 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 281                                   struct ib_srq_init_attr *init_attr,
 282                                   struct ib_udata *udata);
 283 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 284                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 285 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 286 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 287 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 288 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 289                           struct ib_recv_wr **bad_wr);
 290
 291 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 292                                 struct ib_qp_init_attr *init_attr,
 293                                 struct ib_udata *udata);
 294 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 295 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 296                       int attr_mask, struct ib_udata *udata);
 297 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 298                      struct ib_qp_init_attr *qp_init_attr);
 299 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 300                       struct ib_send_wr **bad_wr);
 301 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 302                       struct ib_recv_wr **bad_wr);
 303
 304 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 305                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 306                  void *in_mad, void *response_mad);
 307 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 308                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 309                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 310 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 311 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 312
 313 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 314                                   struct ib_fmr_attr *fmr_attr);
 315 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 316                          u64 iova);
 317 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 318 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 319
 320 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 321 {
 322         return !!(ah->av.g_slid & 0x80);
 323 }
 324
 325 #endif /* MLX4_IB_H */