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_gid_entry {
 116         struct list_head        list;
 117         union ib_gid            gid;
 118         int                     added;
 119         u8                      port;
 120 };
 121
 122 struct mlx4_ib_qp {
 123         struct ib_qp            ibqp;
 124         struct mlx4_qp          mqp;
 125         struct mlx4_buf         buf;
 126
 127         struct mlx4_db          db;
 128         struct mlx4_ib_wq       rq;
 129
 130         u32                     doorbell_qpn;
 131         __be32                  sq_signal_bits;
 132         unsigned                sq_next_wqe;
 133         int                     sq_max_wqes_per_wr;
 134         int                     sq_spare_wqes;
 135         struct mlx4_ib_wq       sq;
 136
 137         struct ib_umem         *umem;
 138         struct mlx4_mtt         mtt;
 139         int                     buf_size;
 140         struct mutex            mutex;
 141         u32                     flags;
 142         u8                      port;
 143         u8                      alt_port;
 144         u8                      atomic_rd_en;
 145         u8                      resp_depth;
 146         u8                      sq_no_prefetch;
 147         u8                      state;
 148         int                     mlx_type;
 149         struct list_head        gid_list;
 150 };
 151
 152 struct mlx4_ib_srq {
 153         struct ib_srq           ibsrq;
 154         struct mlx4_srq         msrq;
 155         struct mlx4_buf         buf;
 156         struct mlx4_db          db;
 157         u64                    *wrid;
 158         spinlock_t              lock;
 159         int                     head;
 160         int                     tail;
 161         u16                     wqe_ctr;
 162         struct ib_umem         *umem;
 163         struct mlx4_mtt         mtt;
 164         struct mutex            mutex;
 165 };
 166
 167 struct mlx4_ib_ah {
 168         struct ib_ah            ibah;
 169         union mlx4_ext_av       av;
 170 };
 171
 172 struct mlx4_ib_iboe {
 173         spinlock_t              lock;
 174         struct net_device      *netdevs[MLX4_MAX_PORTS];
 175         struct notifier_block   nb;
 176         union ib_gid            gid_table[MLX4_MAX_PORTS][128];
 177 };
 178
 179 struct mlx4_ib_dev {
 180         struct ib_device        ib_dev;
 181         struct mlx4_dev        *dev;
 182         int                     num_ports;
 183         void __iomem           *uar_map;
 184
 185         struct mlx4_uar         priv_uar;
 186         u32                     priv_pdn;
 187         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 188
 189         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 190         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 191         spinlock_t              sm_lock;
 192
 193         struct mutex            cap_mask_mutex;
 194         bool                    ib_active;
 195         struct mlx4_ib_iboe     iboe;
 196 };
 197
 198 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 199 {
 200         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 201 }
 202
 203 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 204 {
 205         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 206 }
 207
 208 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 209 {
 210         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 211 }
 212
 213 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 214 {
 215         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 216 }
 217
 218 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 219 {
 220         return container_of(mcq, struct mlx4_ib_cq, mcq);
 221 }
 222
 223 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 224 {
 225         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 226 }
 227
 228 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
 229 {
 230         return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
 231 }
 232
 233 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
 234 {
 235         return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
 236 }
 237 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 238 {
 239         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 240 }
 241
 242 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 243 {
 244         return container_of(mqp, struct mlx4_ib_qp, mqp);
 245 }
 246
 247 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 248 {
 249         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 250 }
 251
 252 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 253 {
 254         return container_of(msrq, struct mlx4_ib_srq, msrq);
 255 }
 256
 257 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 258 {
 259         return container_of(ibah, struct mlx4_ib_ah, ibah);
 260 }
 261
 262 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 263                         struct mlx4_db *db);
 264 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
 265
 266 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 267 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 268                            struct ib_umem *umem);
 269 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 270                                   u64 virt_addr, int access_flags,
 271                                   struct ib_udata *udata);
 272 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 273 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
 274                                         int max_page_list_len);
 275 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
 276                                                                int page_list_len);
 277 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
 278
 279 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
 280 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
 281 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 282                                 struct ib_ucontext *context,
 283                                 struct ib_udata *udata);
 284 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 285 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 286 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 287 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 288 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 289
 290 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 291 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 292 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 293
 294 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 295                                   struct ib_srq_init_attr *init_attr,
 296                                   struct ib_udata *udata);
 297 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 298                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 299 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 300 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 301 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 302 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 303                           struct ib_recv_wr **bad_wr);
 304
 305 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 306                                 struct ib_qp_init_attr *init_attr,
 307                                 struct ib_udata *udata);
 308 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 309 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 310                       int attr_mask, struct ib_udata *udata);
 311 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
 312                      struct ib_qp_init_attr *qp_init_attr);
 313 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 314                       struct ib_send_wr **bad_wr);
 315 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 316                       struct ib_recv_wr **bad_wr);
 317
 318 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 319                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 320                  void *in_mad, void *response_mad);
 321 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 322                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 323                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 324 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 325 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 326
 327 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
 328                                   struct ib_fmr_attr *fmr_attr);
 329 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
 330                          u64 iova);
 331 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
 332 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
 333
 334 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
 335                         u8 *mac, int *is_mcast, u8 port);
 336
 337 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 338 {
 339         u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
 340
 341         if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
 342                 return 1;
 343
 344         return !!(ah->av.ib.g_slid & 0x80);
 345 }
 346
 347 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 348                    union ib_gid *gid);
 349
 350 #endif /* MLX4_IB_H */