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