drivers/infiniband/hw/mlx4/mlx4_ib.h

   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_qp {
 116         struct ib_qp            ibqp;
 117         struct mlx4_qp          mqp;
 118         struct mlx4_buf         buf;
 119
 120         struct mlx4_db          db;
 121         struct mlx4_ib_wq       rq;
 122
 123         u32                     doorbell_qpn;
 124         __be32                  sq_signal_bits;
 125         unsigned                sq_next_wqe;
 126         int                     sq_max_wqes_per_wr;
 127         int                     sq_spare_wqes;
 128         struct mlx4_ib_wq       sq;
 129
 130         struct ib_umem         *umem;
 131         struct mlx4_mtt         mtt;
 132         int                     buf_size;
 133         struct mutex            mutex;
 134         u32                     flags;
 135         u8                      port;
 136         u8                      alt_port;
 137         u8                      atomic_rd_en;
 138         u8                      resp_depth;
 139         u8                      sq_no_prefetch;
 140         u8                      state;
 141 };
 142
 143 struct mlx4_ib_srq {
 144         struct ib_srq           ibsrq;
 145         struct mlx4_srq         msrq;
 146         struct mlx4_buf         buf;
 147         struct mlx4_db          db;
 148         u64                    *wrid;
 149         spinlock_t              lock;
 150         int                     head;
 151         int                     tail;
 152         u16                     wqe_ctr;
 153         struct ib_umem         *umem;
 154         struct mlx4_mtt         mtt;
 155         struct mutex            mutex;
 156 };
 157
 158 struct mlx4_ib_ah {
 159         struct ib_ah            ibah;
 160         struct mlx4_av          av;
 161 };
 162
 163 struct mlx4_ib_dev {
 164         struct ib_device        ib_dev;
 165         struct mlx4_dev        *dev;
 166         int                     num_ports;
 167         void __iomem           *uar_map;
 168
 169         struct mlx4_uar         priv_uar;
 170         u32                     priv_pdn;
 171         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 172
 173         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 174         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 175         spinlock_t              sm_lock;
 176
 177         struct mutex            cap_mask_mutex;
 178 };
 179
 180 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 181 {
 182         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 183 }
 184
 185 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 186 {
 187         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 188 }
 189
 190 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 191 {
 192         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 193 }
 194
 195 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 196 {
 197         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 198 }
 199
 200 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 201 {
 202         return container_of(mcq, struct mlx4_ib_cq, mcq);
 203 }
 204
 205 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 206 {
 207         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 208 }
 209
 210 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
 211 {
 212         return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
 213 }
 214
 215 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 216 {
 217         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 218 }
 219 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 220 {
 221         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 222 }
 223
 224 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 225 {
 226         return container_of(mqp, struct mlx4_ib_qp, mqp);
 227 }
 228
 229 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 230 {
 231         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 232 }
 233
 234 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 235 {
 236         return container_of(msrq, struct mlx4_ib_srq, msrq);
 237 }
 238
 239 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 240 {
 241         return container_of(ibah, struct mlx4_ib_ah, ibah);
 242 }
 243
 244 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 245                         struct mlx4_db *db);
 246 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 247
 248 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 249 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 250                            struct ib_umem *umem);
 251 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 252                                   u64 virt_addr, int access_flags,
 253                                   struct ib_udata *udata);
 254 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 255 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
 256                                         int max_page_list_len);
 257 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
 258                                                                int page_list_len);
 259 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
 260
 261 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 262 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 263 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 264                                 struct ib_ucontext *context,
 265                                 struct ib_udata *udata);
 266 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 267 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 268 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 269 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 270 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 271
 272 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 273 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 274 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 275
 276 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 277                                   struct ib_srq_init_attr *init_attr,
 278                                   struct ib_udata *udata);
 279 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 280                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 281 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 282 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 283 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 284 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 285                           struct ib_recv_wr **bad_wr);
 286
 287 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 288                                 struct ib_qp_init_attr *init_attr,
 289                                 struct ib_udata *udata);
 290 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 291 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 292                       int attr_mask, struct ib_udata *udata);
 293 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 294                      struct ib_qp_init_attr *qp_init_attr);
 295 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 296                       struct ib_send_wr **bad_wr);
 297 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 298                       struct ib_recv_wr **bad_wr);
 299
 300 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 301                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 302                  void *in_mad, void *response_mad);
 303 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 304                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 305                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 306 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 307 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 308
 309 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 310                                   struct ib_fmr_attr *fmr_attr);
 311 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 312                          u64 iova);
 313 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 314 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 315
 316 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 317 {
 318         return !!(ah->av.g_slid & 0x80);
 319 }
 320
 321 #endif /* MLX4_IB_H */