drivers/infiniband/hw/mlx5/mlx5_ib.h

   1 /*
   2  * Copyright (c) 2013-2015, Mellanox Technologies. 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 MLX5_IB_H
  34 #define MLX5_IB_H
  35
  36 #include <linux/kernel.h>
  37 #include <linux/sched.h>
  38 #include <rdma/ib_verbs.h>
  39 #include <rdma/ib_smi.h>
  40 #include <linux/mlx5/driver.h>
  41 #include <linux/mlx5/cq.h>
  42 #include <linux/mlx5/qp.h>
  43 #include <linux/mlx5/srq.h>
  44 #include <linux/types.h>
  45
  46 #define mlx5_ib_dbg(dev, format, arg...)                                \
  47 pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,    \
  48          __LINE__, current->pid, ##arg)
  49
  50 #define mlx5_ib_err(dev, format, arg...)                                \
  51 pr_err("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,      \
  52         __LINE__, current->pid, ##arg)
  53
  54 #define mlx5_ib_warn(dev, format, arg...)                               \
  55 pr_warn("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,     \
  56         __LINE__, current->pid, ##arg)
  57
  58 enum {
  59         MLX5_IB_MMAP_CMD_SHIFT  = 8,
  60         MLX5_IB_MMAP_CMD_MASK   = 0xff,
  61 };
  62
  63 enum mlx5_ib_mmap_cmd {
  64         MLX5_IB_MMAP_REGULAR_PAGE               = 0,
  65         MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES       = 1, /* always last */
  66 };
  67
  68 enum {
  69         MLX5_RES_SCAT_DATA32_CQE        = 0x1,
  70         MLX5_RES_SCAT_DATA64_CQE        = 0x2,
  71         MLX5_REQ_SCAT_DATA32_CQE        = 0x11,
  72         MLX5_REQ_SCAT_DATA64_CQE        = 0x22,
  73 };
  74
  75 enum mlx5_ib_latency_class {
  76         MLX5_IB_LATENCY_CLASS_LOW,
  77         MLX5_IB_LATENCY_CLASS_MEDIUM,
  78         MLX5_IB_LATENCY_CLASS_HIGH,
  79         MLX5_IB_LATENCY_CLASS_FAST_PATH
  80 };
  81
  82 enum mlx5_ib_mad_ifc_flags {
  83         MLX5_MAD_IFC_IGNORE_MKEY        = 1,
  84         MLX5_MAD_IFC_IGNORE_BKEY        = 2,
  85         MLX5_MAD_IFC_NET_VIEW           = 4,
  86 };
  87
  88 struct mlx5_ib_ucontext {
  89         struct ib_ucontext      ibucontext;
  90         struct list_head        db_page_list;
  91
  92         /* protect doorbell record alloc/free
  93          */
  94         struct mutex            db_page_mutex;
  95         struct mlx5_uuar_info   uuari;
  96 };
  97
  98 static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
  99 {
 100         return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
 101 }
 102
 103 struct mlx5_ib_pd {
 104         struct ib_pd            ibpd;
 105         u32                     pdn;
 106 };
 107
 108 /* Use macros here so that don't have to duplicate
 109  * enum ib_send_flags and enum ib_qp_type for low-level driver
 110  */
 111
 112 #define MLX5_IB_SEND_UMR_UNREG  IB_SEND_RESERVED_START
 113 #define MLX5_IB_SEND_UMR_FAIL_IF_FREE (IB_SEND_RESERVED_START << 1)
 114 #define MLX5_IB_SEND_UMR_UPDATE_MTT (IB_SEND_RESERVED_START << 2)
 115 #define MLX5_IB_QPT_REG_UMR     IB_QPT_RESERVED1
 116 #define MLX5_IB_WR_UMR          IB_WR_RESERVED1
 117
 118 struct wr_list {
 119         u16     opcode;
 120         u16     next;
 121 };
 122
 123 struct mlx5_ib_wq {
 124         u64                    *wrid;
 125         u32                    *wr_data;
 126         struct wr_list         *w_list;
 127         unsigned               *wqe_head;
 128         u16                     unsig_count;
 129
 130         /* serialize post to the work queue
 131          */
 132         spinlock_t              lock;
 133         int                     wqe_cnt;
 134         int                     max_post;
 135         int                     max_gs;
 136         int                     offset;
 137         int                     wqe_shift;
 138         unsigned                head;
 139         unsigned                tail;
 140         u16                     cur_post;
 141         u16                     last_poll;
 142         void                   *qend;
 143 };
 144
 145 enum {
 146         MLX5_QP_USER,
 147         MLX5_QP_KERNEL,
 148         MLX5_QP_EMPTY
 149 };
 150
 151 /*
 152  * Connect-IB can trigger up to four concurrent pagefaults
 153  * per-QP.
 154  */
 155 enum mlx5_ib_pagefault_context {
 156         MLX5_IB_PAGEFAULT_RESPONDER_READ,
 157         MLX5_IB_PAGEFAULT_REQUESTOR_READ,
 158         MLX5_IB_PAGEFAULT_RESPONDER_WRITE,
 159         MLX5_IB_PAGEFAULT_REQUESTOR_WRITE,
 160         MLX5_IB_PAGEFAULT_CONTEXTS
 161 };
 162
 163 static inline enum mlx5_ib_pagefault_context
 164         mlx5_ib_get_pagefault_context(struct mlx5_pagefault *pagefault)
 165 {
 166         return pagefault->flags & (MLX5_PFAULT_REQUESTOR | MLX5_PFAULT_WRITE);
 167 }
 168
 169 struct mlx5_ib_pfault {
 170         struct work_struct      work;
 171         struct mlx5_pagefault   mpfault;
 172 };
 173
 174 struct mlx5_ib_qp {
 175         struct ib_qp            ibqp;
 176         struct mlx5_core_qp     mqp;
 177         struct mlx5_buf         buf;
 178
 179         struct mlx5_db          db;
 180         struct mlx5_ib_wq       rq;
 181
 182         u32                     doorbell_qpn;
 183         u8                      sq_signal_bits;
 184         u8                      fm_cache;
 185         int                     sq_max_wqes_per_wr;
 186         int                     sq_spare_wqes;
 187         struct mlx5_ib_wq       sq;
 188
 189         struct ib_umem         *umem;
 190         int                     buf_size;
 191
 192         /* serialize qp state modifications
 193          */
 194         struct mutex            mutex;
 195         u16                     xrcdn;
 196         u32                     flags;
 197         u8                      port;
 198         u8                      alt_port;
 199         u8                      atomic_rd_en;
 200         u8                      resp_depth;
 201         u8                      state;
 202         int                     mlx_type;
 203         int                     wq_sig;
 204         int                     scat_cqe;
 205         int                     max_inline_data;
 206         struct mlx5_bf         *bf;
 207         int                     has_rq;
 208
 209         /* only for user space QPs. For kernel
 210          * we have it from the bf object
 211          */
 212         int                     uuarn;
 213
 214         int                     create_type;
 215
 216         /* Store signature errors */
 217         bool                    signature_en;
 218
 219 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 220         /*
 221          * A flag that is true for QP's that are in a state that doesn't
 222          * allow page faults, and shouldn't schedule any more faults.
 223          */
 224         int                     disable_page_faults;
 225         /*
 226          * The disable_page_faults_lock protects a QP's disable_page_faults
 227          * field, allowing for a thread to atomically check whether the QP
 228          * allows page faults, and if so schedule a page fault.
 229          */
 230         spinlock_t              disable_page_faults_lock;
 231         struct mlx5_ib_pfault   pagefaults[MLX5_IB_PAGEFAULT_CONTEXTS];
 232 #endif
 233 };
 234
 235 struct mlx5_ib_cq_buf {
 236         struct mlx5_buf         buf;
 237         struct ib_umem          *umem;
 238         int                     cqe_size;
 239         int                     nent;
 240 };
 241
 242 enum mlx5_ib_qp_flags {
 243         MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK     = 1 << 0,
 244         MLX5_IB_QP_SIGNATURE_HANDLING           = 1 << 1,
 245 };
 246
 247 struct mlx5_umr_wr {
 248         struct ib_send_wr               wr;
 249         union {
 250                 u64                     virt_addr;
 251                 u64                     offset;
 252         } target;
 253         struct ib_pd                   *pd;
 254         unsigned int                    page_shift;
 255         unsigned int                    npages;
 256         u32                             length;
 257         int                             access_flags;
 258         u32                             mkey;
 259 };
 260
 261 static inline struct mlx5_umr_wr *umr_wr(struct ib_send_wr *wr)
 262 {
 263         return container_of(wr, struct mlx5_umr_wr, wr);
 264 }
 265
 266 struct mlx5_shared_mr_info {
 267         int mr_id;
 268         struct ib_umem          *umem;
 269 };
 270
 271 struct mlx5_ib_cq {
 272         struct ib_cq            ibcq;
 273         struct mlx5_core_cq     mcq;
 274         struct mlx5_ib_cq_buf   buf;
 275         struct mlx5_db          db;
 276
 277         /* serialize access to the CQ
 278          */
 279         spinlock_t              lock;
 280
 281         /* protect resize cq
 282          */
 283         struct mutex            resize_mutex;
 284         struct mlx5_ib_cq_buf  *resize_buf;
 285         struct ib_umem         *resize_umem;
 286         int                     cqe_size;
 287 };
 288
 289 struct mlx5_ib_srq {
 290         struct ib_srq           ibsrq;
 291         struct mlx5_core_srq    msrq;
 292         struct mlx5_buf         buf;
 293         struct mlx5_db          db;
 294         u64                    *wrid;
 295         /* protect SRQ hanlding
 296          */
 297         spinlock_t              lock;
 298         int                     head;
 299         int                     tail;
 300         u16                     wqe_ctr;
 301         struct ib_umem         *umem;
 302         /* serialize arming a SRQ
 303          */
 304         struct mutex            mutex;
 305         int                     wq_sig;
 306 };
 307
 308 struct mlx5_ib_xrcd {
 309         struct ib_xrcd          ibxrcd;
 310         u32                     xrcdn;
 311 };
 312
 313 enum mlx5_ib_mtt_access_flags {
 314         MLX5_IB_MTT_READ  = (1 << 0),
 315         MLX5_IB_MTT_WRITE = (1 << 1),
 316 };
 317
 318 #define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)
 319
 320 struct mlx5_ib_mr {
 321         struct ib_mr            ibmr;
 322         void                    *descs;
 323         dma_addr_t              desc_map;
 324         int                     ndescs;
 325         int                     max_descs;
 326         int                     desc_size;
 327         struct mlx5_core_mr     mmr;
 328         struct ib_umem         *umem;
 329         struct mlx5_shared_mr_info      *smr_info;
 330         struct list_head        list;
 331         int                     order;
 332         int                     umred;
 333         int                     npages;
 334         struct mlx5_ib_dev     *dev;
 335         struct mlx5_create_mkey_mbox_out out;
 336         struct mlx5_core_sig_ctx    *sig;
 337         int                     live;
 338         void                    *descs_alloc;
 339 };
 340
 341 struct mlx5_ib_fast_reg_page_list {
 342         struct ib_fast_reg_page_list    ibfrpl;
 343         __be64                         *mapped_page_list;
 344         dma_addr_t                      map;
 345 };
 346
 347 struct mlx5_ib_umr_context {
 348         enum ib_wc_status       status;
 349         struct completion       done;
 350 };
 351
 352 static inline void mlx5_ib_init_umr_context(struct mlx5_ib_umr_context *context)
 353 {
 354         context->status = -1;
 355         init_completion(&context->done);
 356 }
 357
 358 struct umr_common {
 359         struct ib_pd    *pd;
 360         struct ib_cq    *cq;
 361         struct ib_qp    *qp;
 362         /* control access to UMR QP
 363          */
 364         struct semaphore        sem;
 365 };
 366
 367 enum {
 368         MLX5_FMR_INVALID,
 369         MLX5_FMR_VALID,
 370         MLX5_FMR_BUSY,
 371 };
 372
 373 struct mlx5_cache_ent {
 374         struct list_head        head;
 375         /* sync access to the cahce entry
 376          */
 377         spinlock_t              lock;
 378
 379
 380         struct dentry          *dir;
 381         char                    name[4];
 382         u32                     order;
 383         u32                     size;
 384         u32                     cur;
 385         u32                     miss;
 386         u32                     limit;
 387
 388         struct dentry          *fsize;
 389         struct dentry          *fcur;
 390         struct dentry          *fmiss;
 391         struct dentry          *flimit;
 392
 393         struct mlx5_ib_dev     *dev;
 394         struct work_struct      work;
 395         struct delayed_work     dwork;
 396         int                     pending;
 397 };
 398
 399 struct mlx5_mr_cache {
 400         struct workqueue_struct *wq;
 401         struct mlx5_cache_ent   ent[MAX_MR_CACHE_ENTRIES];
 402         int                     stopped;
 403         struct dentry           *root;
 404         unsigned long           last_add;
 405 };
 406
 407 struct mlx5_ib_resources {
 408         struct ib_cq    *c0;
 409         struct ib_xrcd  *x0;
 410         struct ib_xrcd  *x1;
 411         struct ib_pd    *p0;
 412         struct ib_srq   *s0;
 413         struct ib_srq   *s1;
 414 };
 415
 416 struct mlx5_ib_dev {
 417         struct ib_device                ib_dev;
 418         struct mlx5_core_dev            *mdev;
 419         MLX5_DECLARE_DOORBELL_LOCK(uar_lock);
 420         int                             num_ports;
 421         /* serialize update of capability mask
 422          */
 423         struct mutex                    cap_mask_mutex;
 424         bool                            ib_active;
 425         struct umr_common               umrc;
 426         /* sync used page count stats
 427          */
 428         struct mlx5_ib_resources        devr;
 429         struct mlx5_mr_cache            cache;
 430         struct timer_list               delay_timer;
 431         int                             fill_delay;
 432 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 433         struct ib_odp_caps      odp_caps;
 434         /*
 435          * Sleepable RCU that prevents destruction of MRs while they are still
 436          * being used by a page fault handler.
 437          */
 438         struct srcu_struct      mr_srcu;
 439 #endif
 440 };
 441
 442 static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
 443 {
 444         return container_of(mcq, struct mlx5_ib_cq, mcq);
 445 }
 446
 447 static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
 448 {
 449         return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
 450 }
 451
 452 static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
 453 {
 454         return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
 455 }
 456
 457 static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
 458 {
 459         return container_of(ibcq, struct mlx5_ib_cq, ibcq);
 460 }
 461
 462 static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
 463 {
 464         return container_of(mqp, struct mlx5_ib_qp, mqp);
 465 }
 466
 467 static inline struct mlx5_ib_mr *to_mibmr(struct mlx5_core_mr *mmr)
 468 {
 469         return container_of(mmr, struct mlx5_ib_mr, mmr);
 470 }
 471
 472 static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
 473 {
 474         return container_of(ibpd, struct mlx5_ib_pd, ibpd);
 475 }
 476
 477 static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
 478 {
 479         return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
 480 }
 481
 482 static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
 483 {
 484         return container_of(ibqp, struct mlx5_ib_qp, ibqp);
 485 }
 486
 487 static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
 488 {
 489         return container_of(msrq, struct mlx5_ib_srq, msrq);
 490 }
 491
 492 static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
 493 {
 494         return container_of(ibmr, struct mlx5_ib_mr, ibmr);
 495 }
 496
 497 static inline struct mlx5_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
 498 {
 499         return container_of(ibfrpl, struct mlx5_ib_fast_reg_page_list, ibfrpl);
 500 }
 501
 502 struct mlx5_ib_ah {
 503         struct ib_ah            ibah;
 504         struct mlx5_av          av;
 505 };
 506
 507 static inline struct mlx5_ib_ah *to_mah(struct ib_ah *ibah)
 508 {
 509         return container_of(ibah, struct mlx5_ib_ah, ibah);
 510 }
 511
 512 int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
 513                         struct mlx5_db *db);
 514 void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
 515 void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
 516 void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
 517 void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
 518 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 519                  u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 520                  const void *in_mad, void *response_mad);
 521 struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
 522                            struct mlx5_ib_ah *ah);
 523 struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 524 int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 525 int mlx5_ib_destroy_ah(struct ib_ah *ah);
 526 struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
 527                                   struct ib_srq_init_attr *init_attr,
 528                                   struct ib_udata *udata);
 529 int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 530                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 531 int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
 532 int mlx5_ib_destroy_srq(struct ib_srq *srq);
 533 int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 534                           struct ib_recv_wr **bad_wr);
 535 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
 536                                 struct ib_qp_init_attr *init_attr,
 537                                 struct ib_udata *udata);
 538 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 539                       int attr_mask, struct ib_udata *udata);
 540 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 541                      struct ib_qp_init_attr *qp_init_attr);
 542 int mlx5_ib_destroy_qp(struct ib_qp *qp);
 543 int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 544                       struct ib_send_wr **bad_wr);
 545 int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 546                       struct ib_recv_wr **bad_wr);
 547 void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n);
 548 int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
 549                           void *buffer, u32 length);
 550 struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 551                                 const struct ib_cq_init_attr *attr,
 552                                 struct ib_ucontext *context,
 553                                 struct ib_udata *udata);
 554 int mlx5_ib_destroy_cq(struct ib_cq *cq);
 555 int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 556 int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
 557 int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 558 int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 559 struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
 560 struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 561                                   u64 virt_addr, int access_flags,
 562                                   struct ib_udata *udata);
 563 int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index,
 564                        int npages, int zap);
 565 int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
 566 struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
 567                                enum ib_mr_type mr_type,
 568                                u32 max_num_sg);
 569 int mlx5_ib_map_mr_sg(struct ib_mr *ibmr,
 570                       struct scatterlist *sg,
 571                       int sg_nents);
 572 struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
 573                                                                int page_list_len);
 574 void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
 575 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 576                         const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 577                         const struct ib_mad_hdr *in, size_t in_mad_size,
 578                         struct ib_mad_hdr *out, size_t *out_mad_size,
 579                         u16 *out_mad_pkey_index);
 580 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
 581                                           struct ib_ucontext *context,
 582                                           struct ib_udata *udata);
 583 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd);
 584 int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
 585 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
 586 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
 587                                           struct ib_smp *out_mad);
 588 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
 589                                          __be64 *sys_image_guid);
 590 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
 591                                  u16 *max_pkeys);
 592 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
 593                                  u32 *vendor_id);
 594 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc);
 595 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid);
 596 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
 597                             u16 *pkey);
 598 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
 599                             union ib_gid *gid);
 600 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
 601                             struct ib_port_attr *props);
 602 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
 603                        struct ib_port_attr *props);
 604 int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
 605 void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
 606 void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
 607                         int *ncont, int *order);
 608 void __mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
 609                             int page_shift, size_t offset, size_t num_pages,
 610                             __be64 *pas, int access_flags);
 611 void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
 612                           int page_shift, __be64 *pas, int access_flags);
 613 void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
 614 int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq);
 615 int mlx5_mr_cache_init(struct mlx5_ib_dev *dev);
 616 int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);
 617 int mlx5_mr_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift);
 618 void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context);
 619 int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
 620                             struct ib_mr_status *mr_status);
 621
 622 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 623 extern struct workqueue_struct *mlx5_ib_page_fault_wq;
 624
 625 void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev);
 626 void mlx5_ib_mr_pfault_handler(struct mlx5_ib_qp *qp,
 627                                struct mlx5_ib_pfault *pfault);
 628 void mlx5_ib_odp_create_qp(struct mlx5_ib_qp *qp);
 629 int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev);
 630 void mlx5_ib_odp_remove_one(struct mlx5_ib_dev *ibdev);
 631 int __init mlx5_ib_odp_init(void);
 632 void mlx5_ib_odp_cleanup(void);
 633 void mlx5_ib_qp_disable_pagefaults(struct mlx5_ib_qp *qp);
 634 void mlx5_ib_qp_enable_pagefaults(struct mlx5_ib_qp *qp);
 635 void mlx5_ib_invalidate_range(struct ib_umem *umem, unsigned long start,
 636                               unsigned long end);
 637
 638 #else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
 639 static inline void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
 640 {
 641         return;
 642 }
 643
 644 static inline void mlx5_ib_odp_create_qp(struct mlx5_ib_qp *qp)         {}
 645 static inline int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev) { return 0; }
 646 static inline void mlx5_ib_odp_remove_one(struct mlx5_ib_dev *ibdev)    {}
 647 static inline int mlx5_ib_odp_init(void) { return 0; }
 648 static inline void mlx5_ib_odp_cleanup(void)                            {}
 649 static inline void mlx5_ib_qp_disable_pagefaults(struct mlx5_ib_qp *qp) {}
 650 static inline void mlx5_ib_qp_enable_pagefaults(struct mlx5_ib_qp *qp)  {}
 651
 652 #endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
 653
 654 static inline void init_query_mad(struct ib_smp *mad)
 655 {
 656         mad->base_version  = 1;
 657         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
 658         mad->class_version = 1;
 659         mad->method        = IB_MGMT_METHOD_GET;
 660 }
 661
 662 static inline u8 convert_access(int acc)
 663 {
 664         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
 665                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
 666                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
 667                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
 668                MLX5_PERM_LOCAL_READ;
 669 }
 670
 671 static inline int is_qp1(enum ib_qp_type qp_type)
 672 {
 673         return qp_type == IB_QPT_GSI;
 674 }
 675
 676 #define MLX5_MAX_UMR_SHIFT 16
 677 #define MLX5_MAX_UMR_PAGES (1 << MLX5_MAX_UMR_SHIFT)
 678
 679 #endif /* MLX5_IB_H */