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 #define MLX4_IB_DRV_NAME        "mlx4_ib"
  48
  49 #ifdef pr_fmt
  50 #undef pr_fmt
  51 #endif
  52 #define pr_fmt(fmt)     "<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__
  53
  54 #define mlx4_ib_warn(ibdev, format, arg...) \
  55         dev_warn((ibdev)->dma_device, MLX4_IB_DRV_NAME ": " format, ## arg)
  56
  57 enum {
  58         MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
  59         MLX4_IB_MAX_HEADROOM     = 2048
  60 };
  61
  62 #define MLX4_IB_SQ_HEADROOM(shift)      ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
  63 #define MLX4_IB_SQ_MAX_SPARE            (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
  64
  65 struct mlx4_ib_ucontext {
  66         struct ib_ucontext      ibucontext;
  67         struct mlx4_uar         uar;
  68         struct list_head        db_page_list;
  69         struct mutex            db_page_mutex;
  70 };
  71
  72 struct mlx4_ib_pd {
  73         struct ib_pd            ibpd;
  74         u32                     pdn;
  75 };
  76
  77 struct mlx4_ib_xrcd {
  78         struct ib_xrcd          ibxrcd;
  79         u32                     xrcdn;
  80         struct ib_pd           *pd;
  81         struct ib_cq           *cq;
  82 };
  83
  84 struct mlx4_ib_cq_buf {
  85         struct mlx4_buf         buf;
  86         struct mlx4_mtt         mtt;
  87 };
  88
  89 struct mlx4_ib_cq_resize {
  90         struct mlx4_ib_cq_buf   buf;
  91         int                     cqe;
  92 };
  93
  94 struct mlx4_ib_cq {
  95         struct ib_cq            ibcq;
  96         struct mlx4_cq          mcq;
  97         struct mlx4_ib_cq_buf   buf;
  98         struct mlx4_ib_cq_resize *resize_buf;
  99         struct mlx4_db          db;
 100         spinlock_t              lock;
 101         struct mutex            resize_mutex;
 102         struct ib_umem         *umem;
 103         struct ib_umem         *resize_umem;
 104 };
 105
 106 struct mlx4_ib_mr {
 107         struct ib_mr            ibmr;
 108         struct mlx4_mr          mmr;
 109         struct ib_umem         *umem;
 110 };
 111
 112 struct mlx4_ib_fast_reg_page_list {
 113         struct ib_fast_reg_page_list    ibfrpl;
 114         __be64                         *mapped_page_list;
 115         dma_addr_t                      map;
 116 };
 117
 118 struct mlx4_ib_fmr {
 119         struct ib_fmr           ibfmr;
 120         struct mlx4_fmr         mfmr;
 121 };
 122
 123 struct mlx4_ib_wq {
 124         u64                    *wrid;
 125         spinlock_t              lock;
 126         int                     wqe_cnt;
 127         int                     max_post;
 128         int                     max_gs;
 129         int                     offset;
 130         int                     wqe_shift;
 131         unsigned                head;
 132         unsigned                tail;
 133 };
 134
 135 enum mlx4_ib_qp_flags {
 136         MLX4_IB_QP_LSO                          = 1 << 0,
 137         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK     = 1 << 1,
 138 };
 139
 140 struct mlx4_ib_gid_entry {
 141         struct list_head        list;
 142         union ib_gid            gid;
 143         int                     added;
 144         u8                      port;
 145 };
 146
 147 struct mlx4_ib_qp {
 148         struct ib_qp            ibqp;
 149         struct mlx4_qp          mqp;
 150         struct mlx4_buf         buf;
 151
 152         struct mlx4_db          db;
 153         struct mlx4_ib_wq       rq;
 154
 155         u32                     doorbell_qpn;
 156         __be32                  sq_signal_bits;
 157         unsigned                sq_next_wqe;
 158         int                     sq_max_wqes_per_wr;
 159         int                     sq_spare_wqes;
 160         struct mlx4_ib_wq       sq;
 161
 162         struct ib_umem         *umem;
 163         struct mlx4_mtt         mtt;
 164         int                     buf_size;
 165         struct mutex            mutex;
 166         u16                     xrcdn;
 167         u32                     flags;
 168         u8                      port;
 169         u8                      alt_port;
 170         u8                      atomic_rd_en;
 171         u8                      resp_depth;
 172         u8                      sq_no_prefetch;
 173         u8                      state;
 174         int                     mlx_type;
 175         struct list_head        gid_list;
 176         struct list_head        steering_rules;
 177 };
 178
 179 struct mlx4_ib_srq {
 180         struct ib_srq           ibsrq;
 181         struct mlx4_srq         msrq;
 182         struct mlx4_buf         buf;
 183         struct mlx4_db          db;
 184         u64                    *wrid;
 185         spinlock_t              lock;
 186         int                     head;
 187         int                     tail;
 188         u16                     wqe_ctr;
 189         struct ib_umem         *umem;
 190         struct mlx4_mtt         mtt;
 191         struct mutex            mutex;
 192 };
 193
 194 struct mlx4_ib_ah {
 195         struct ib_ah            ibah;
 196         union mlx4_ext_av       av;
 197 };
 198
 199 struct mlx4_ib_iboe {
 200         spinlock_t              lock;
 201         struct net_device      *netdevs[MLX4_MAX_PORTS];
 202         struct notifier_block   nb;
 203         union ib_gid            gid_table[MLX4_MAX_PORTS][128];
 204 };
 205
 206 struct mlx4_ib_dev {
 207         struct ib_device        ib_dev;
 208         struct mlx4_dev        *dev;
 209         int                     num_ports;
 210         void __iomem           *uar_map;
 211
 212         struct mlx4_uar         priv_uar;
 213         u32                     priv_pdn;
 214         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 215
 216         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 217         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 218         spinlock_t              sm_lock;
 219
 220         struct mutex            cap_mask_mutex;
 221         bool                    ib_active;
 222         struct mlx4_ib_iboe     iboe;
 223         int                     counters[MLX4_MAX_PORTS];
 224         int                    *eq_table;
 225         int                     eq_added;
 226 };
 227
 228 struct ib_event_work {
 229         struct work_struct      work;
 230         struct mlx4_ib_dev      *ib_dev;
 231         struct mlx4_eqe         ib_eqe;
 232 };
 233
 234 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 235 {
 236         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 237 }
 238
 239 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 240 {
 241         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 242 }
 243
 244 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 245 {
 246         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 247 }
 248
 249 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
 250 {
 251         return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
 252 }
 253
 254 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 255 {
 256         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 257 }
 258
 259 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 260 {
 261         return container_of(mcq, struct mlx4_ib_cq, mcq);
 262 }
 263
 264 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 265 {
 266         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 267 }
 268
 269 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
 270 {
 271         return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
 272 }
 273
 274 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 275 {
 276         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 277 }
 278 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 279 {
 280         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 281 }
 282
 283 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 284 {
 285         return container_of(mqp, struct mlx4_ib_qp, mqp);
 286 }
 287
 288 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 289 {
 290         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 291 }
 292
 293 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 294 {
 295         return container_of(msrq, struct mlx4_ib_srq, msrq);
 296 }
 297
 298 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 299 {
 300         return container_of(ibah, struct mlx4_ib_ah, ibah);
 301 }
 302
 303 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 304                         struct mlx4_db *db);
 305 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 306
 307 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 308 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 309                            struct ib_umem *umem);
 310 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 311                                   u64 virt_addr, int access_flags,
 312                                   struct ib_udata *udata);
 313 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 314 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
 315                                         int max_page_list_len);
 316 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
 317                                                                int page_list_len);
 318 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
 319
 320 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 321 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 322 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 323                                 struct ib_ucontext *context,
 324                                 struct ib_udata *udata);
 325 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 326 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 327 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 328 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 329 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 330
 331 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 332 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 333 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 334
 335 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 336                                   struct ib_srq_init_attr *init_attr,
 337                                   struct ib_udata *udata);
 338 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 339                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 340 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 341 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 342 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 343 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 344                           struct ib_recv_wr **bad_wr);
 345
 346 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 347                                 struct ib_qp_init_attr *init_attr,
 348                                 struct ib_udata *udata);
 349 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 350 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 351                       int attr_mask, struct ib_udata *udata);
 352 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 353                      struct ib_qp_init_attr *qp_init_attr);
 354 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 355                       struct ib_send_wr **bad_wr);
 356 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 357                       struct ib_recv_wr **bad_wr);
 358
 359 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 360                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 361                  void *in_mad, void *response_mad);
 362 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 363                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 364                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 365 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 366 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 367
 368 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 369                                   struct ib_fmr_attr *fmr_attr);
 370 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 371                          u64 iova);
 372 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 373 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 374
 375 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
 376                         u8 *mac, int *is_mcast, u8 port);
 377
 378 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 379 {
 380         u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
 381
 382         if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
 383                 return 1;
 384
 385         return !!(ah->av.ib.g_slid & 0x80);
 386 }
 387
 388 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 389                    union ib_gid *gid);
 390
 391 void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num,
 392                             enum ib_event_type type);
 393
 394 #endif /* MLX4_IB_H */