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_fast_reg_page_list {
  87         struct ib_fast_reg_page_list    ibfrpl;
  88         dma_addr_t                      map;
  89 };
  90
  91 struct mlx4_ib_fmr {
  92         struct ib_fmr           ibfmr;
  93         struct mlx4_fmr         mfmr;
  94 };
  95
  96 struct mlx4_ib_wq {
  97         u64                    *wrid;
  98         spinlock_t              lock;
  99         int                     wqe_cnt;
 100         int                     max_post;
 101         int                     max_gs;
 102         int                     offset;
 103         int                     wqe_shift;
 104         unsigned                head;
 105         unsigned                tail;
 106 };
 107
 108 enum mlx4_ib_qp_flags {
 109         MLX4_IB_QP_LSO                          = 1 << 0,
 110         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK     = 1 << 1,
 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_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         u32                     flags;
 133         u8                      port;
 134         u8                      alt_port;
 135         u8                      atomic_rd_en;
 136         u8                      resp_depth;
 137         u8                      sq_no_prefetch;
 138         u8                      state;
 139 };
 140
 141 struct mlx4_ib_srq {
 142         struct ib_srq           ibsrq;
 143         struct mlx4_srq         msrq;
 144         struct mlx4_buf         buf;
 145         struct mlx4_db          db;
 146         u64                    *wrid;
 147         spinlock_t              lock;
 148         int                     head;
 149         int                     tail;
 150         u16                     wqe_ctr;
 151         struct ib_umem         *umem;
 152         struct mlx4_mtt         mtt;
 153         struct mutex            mutex;
 154 };
 155
 156 struct mlx4_ib_ah {
 157         struct ib_ah            ibah;
 158         struct mlx4_av          av;
 159 };
 160
 161 struct mlx4_ib_dev {
 162         struct ib_device        ib_dev;
 163         struct mlx4_dev        *dev;
 164         void __iomem           *uar_map;
 165
 166         struct mlx4_uar         priv_uar;
 167         u32                     priv_pdn;
 168         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 169
 170         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 171         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 172         spinlock_t              sm_lock;
 173
 174         struct mutex            cap_mask_mutex;
 175 };
 176
 177 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 178 {
 179         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 180 }
 181
 182 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 183 {
 184         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 185 }
 186
 187 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 188 {
 189         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 190 }
 191
 192 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 193 {
 194         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 195 }
 196
 197 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 198 {
 199         return container_of(mcq, struct mlx4_ib_cq, mcq);
 200 }
 201
 202 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 203 {
 204         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 205 }
 206
 207 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
 208 {
 209         return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
 210 }
 211
 212 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 213 {
 214         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 215 }
 216 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 217 {
 218         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 219 }
 220
 221 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 222 {
 223         return container_of(mqp, struct mlx4_ib_qp, mqp);
 224 }
 225
 226 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 227 {
 228         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 229 }
 230
 231 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 232 {
 233         return container_of(msrq, struct mlx4_ib_srq, msrq);
 234 }
 235
 236 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 237 {
 238         return container_of(ibah, struct mlx4_ib_ah, ibah);
 239 }
 240
 241 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 242                         struct mlx4_db *db);
 243 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 244
 245 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 246 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 247                            struct ib_umem *umem);
 248 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 249                                   u64 virt_addr, int access_flags,
 250                                   struct ib_udata *udata);
 251 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 252 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
 253                                         int max_page_list_len);
 254 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
 255                                                                int page_list_len);
 256 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
 257
 258 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 259 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 260 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 261                                 struct ib_ucontext *context,
 262                                 struct ib_udata *udata);
 263 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 264 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 265 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 266 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 267 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 268
 269 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 270 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 271 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 272
 273 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 274                                   struct ib_srq_init_attr *init_attr,
 275                                   struct ib_udata *udata);
 276 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 277                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 278 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 279 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 280 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 281 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 282                           struct ib_recv_wr **bad_wr);
 283
 284 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 285                                 struct ib_qp_init_attr *init_attr,
 286                                 struct ib_udata *udata);
 287 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 288 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 289                       int attr_mask, struct ib_udata *udata);
 290 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 291                      struct ib_qp_init_attr *qp_init_attr);
 292 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 293                       struct ib_send_wr **bad_wr);
 294 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 295                       struct ib_recv_wr **bad_wr);
 296
 297 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 298                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 299                  void *in_mad, void *response_mad);
 300 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 301                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 302                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 303 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 304 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 305
 306 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 307                                   struct ib_fmr_attr *fmr_attr);
 308 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 309                          u64 iova);
 310 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 311 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 312
 313 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 314 {
 315         return !!(ah->av.g_slid & 0x80);
 316 }
 317
 318 #endif /* MLX4_IB_H */