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 struct mlx4_ib_ucontext {
  47         struct ib_ucontext      ibucontext;
  48         struct mlx4_uar         uar;
  49         struct list_head        db_page_list;
  50         struct mutex            db_page_mutex;
  51 };
  52
  53 struct mlx4_ib_pd {
  54         struct ib_pd            ibpd;
  55         u32                     pdn;
  56 };
  57
  58 struct mlx4_ib_cq_buf {
  59         struct mlx4_buf         buf;
  60         struct mlx4_mtt         mtt;
  61 };
  62
  63 struct mlx4_ib_cq_resize {
  64         struct mlx4_ib_cq_buf   buf;
  65         int                     cqe;
  66 };
  67
  68 struct mlx4_ib_cq {
  69         struct ib_cq            ibcq;
  70         struct mlx4_cq          mcq;
  71         struct mlx4_ib_cq_buf   buf;
  72         struct mlx4_ib_cq_resize *resize_buf;
  73         struct mlx4_db          db;
  74         spinlock_t              lock;
  75         struct mutex            resize_mutex;
  76         struct ib_umem         *umem;
  77         struct ib_umem         *resize_umem;
  78 };
  79
  80 struct mlx4_ib_mr {
  81         struct ib_mr            ibmr;
  82         struct mlx4_mr          mmr;
  83         struct ib_umem         *umem;
  84 };
  85
  86 struct mlx4_ib_fmr {
  87         struct ib_fmr           ibfmr;
  88         struct mlx4_fmr         mfmr;
  89 };
  90
  91 struct mlx4_ib_wq {
  92         u64                    *wrid;
  93         spinlock_t              lock;
  94         int                     wqe_cnt;
  95         int                     max_post;
  96         int                     max_gs;
  97         int                     offset;
  98         int                     wqe_shift;
  99         unsigned                head;
 100         unsigned                tail;
 101 };
 102
 103 enum mlx4_ib_qp_flags {
 104         MLX4_IB_QP_LSO          = 1 << 0
 105 };
 106
 107 struct mlx4_ib_qp {
 108         struct ib_qp            ibqp;
 109         struct mlx4_qp          mqp;
 110         struct mlx4_buf         buf;
 111
 112         struct mlx4_db          db;
 113         struct mlx4_ib_wq       rq;
 114
 115         u32                     doorbell_qpn;
 116         __be32                  sq_signal_bits;
 117         unsigned                sq_next_wqe;
 118         int                     sq_max_wqes_per_wr;
 119         int                     sq_spare_wqes;
 120         struct mlx4_ib_wq       sq;
 121
 122         struct ib_umem         *umem;
 123         struct mlx4_mtt         mtt;
 124         int                     buf_size;
 125         struct mutex            mutex;
 126         u32                     flags;
 127         u8                      port;
 128         u8                      alt_port;
 129         u8                      atomic_rd_en;
 130         u8                      resp_depth;
 131         u8                      sq_no_prefetch;
 132         u8                      state;
 133 };
 134
 135 struct mlx4_ib_srq {
 136         struct ib_srq           ibsrq;
 137         struct mlx4_srq         msrq;
 138         struct mlx4_buf         buf;
 139         struct mlx4_db          db;
 140         u64                    *wrid;
 141         spinlock_t              lock;
 142         int                     head;
 143         int                     tail;
 144         u16                     wqe_ctr;
 145         struct ib_umem         *umem;
 146         struct mlx4_mtt         mtt;
 147         struct mutex            mutex;
 148 };
 149
 150 struct mlx4_ib_ah {
 151         struct ib_ah            ibah;
 152         struct mlx4_av          av;
 153 };
 154
 155 struct mlx4_ib_dev {
 156         struct ib_device        ib_dev;
 157         struct mlx4_dev        *dev;
 158         void __iomem           *uar_map;
 159
 160         struct mlx4_uar         priv_uar;
 161         u32                     priv_pdn;
 162         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 163
 164         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 165         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 166         spinlock_t              sm_lock;
 167
 168         struct mutex            cap_mask_mutex;
 169 };
 170
 171 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 172 {
 173         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 174 }
 175
 176 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 177 {
 178         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 179 }
 180
 181 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 182 {
 183         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 184 }
 185
 186 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 187 {
 188         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 189 }
 190
 191 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 192 {
 193         return container_of(mcq, struct mlx4_ib_cq, mcq);
 194 }
 195
 196 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 197 {
 198         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 199 }
 200
 201 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 202 {
 203         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 204 }
 205 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 206 {
 207         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 208 }
 209
 210 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 211 {
 212         return container_of(mqp, struct mlx4_ib_qp, mqp);
 213 }
 214
 215 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 216 {
 217         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 218 }
 219
 220 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 221 {
 222         return container_of(msrq, struct mlx4_ib_srq, msrq);
 223 }
 224
 225 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 226 {
 227         return container_of(ibah, struct mlx4_ib_ah, ibah);
 228 }
 229
 230 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 231                         struct mlx4_db *db);
 232 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 233
 234 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 235 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 236                            struct ib_umem *umem);
 237 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 238                                   u64 virt_addr, int access_flags,
 239                                   struct ib_udata *udata);
 240 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 241
 242 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 243 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 244 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 245                                 struct ib_ucontext *context,
 246                                 struct ib_udata *udata);
 247 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 248 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 249 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 250 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 251 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 252
 253 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 254 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 255 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 256
 257 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 258                                   struct ib_srq_init_attr *init_attr,
 259                                   struct ib_udata *udata);
 260 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 261                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 262 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 263 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 264 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 265 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 266                           struct ib_recv_wr **bad_wr);
 267
 268 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 269                                 struct ib_qp_init_attr *init_attr,
 270                                 struct ib_udata *udata);
 271 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 272 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 273                       int attr_mask, struct ib_udata *udata);
 274 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 275                      struct ib_qp_init_attr *qp_init_attr);
 276 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 277                       struct ib_send_wr **bad_wr);
 278 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 279                       struct ib_recv_wr **bad_wr);
 280
 281 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 282                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 283                  void *in_mad, void *response_mad);
 284 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 285                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 286                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 287 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 288 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 289
 290 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 291                                   struct ib_fmr_attr *fmr_attr);
 292 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 293                          u64 iova);
 294 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 295 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 296
 297 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 298 {
 299         return !!(ah->av.g_slid & 0x80);
 300 }
 301
 302 #endif /* MLX4_IB_H */