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
  39 #include <rdma/ib_verbs.h>
  40 #include <rdma/ib_umem.h>
  41
  42 #include <linux/mlx4/device.h>
  43 #include <linux/mlx4/doorbell.h>
  44
  45 enum {
  46         MLX4_IB_DB_PER_PAGE     = PAGE_SIZE / 4
  47 };
  48
  49 struct mlx4_ib_db_pgdir;
  50 struct mlx4_ib_user_db_page;
  51
  52 struct mlx4_ib_db {
  53         __be32                 *db;
  54         union {
  55                 struct mlx4_ib_db_pgdir        *pgdir;
  56                 struct mlx4_ib_user_db_page    *user_page;
  57         }                       u;
  58         dma_addr_t              dma;
  59         int                     index;
  60         int                     order;
  61 };
  62
  63 struct mlx4_ib_ucontext {
  64         struct ib_ucontext      ibucontext;
  65         struct mlx4_uar         uar;
  66         struct list_head        db_page_list;
  67         struct mutex            db_page_mutex;
  68 };
  69
  70 struct mlx4_ib_pd {
  71         struct ib_pd            ibpd;
  72         u32                     pdn;
  73 };
  74
  75 struct mlx4_ib_cq_buf {
  76         struct mlx4_buf         buf;
  77         struct mlx4_mtt         mtt;
  78 };
  79
  80 struct mlx4_ib_cq {
  81         struct ib_cq            ibcq;
  82         struct mlx4_cq          mcq;
  83         struct mlx4_ib_cq_buf   buf;
  84         struct mlx4_ib_db       db;
  85         spinlock_t              lock;
  86         struct ib_umem         *umem;
  87 };
  88
  89 struct mlx4_ib_mr {
  90         struct ib_mr            ibmr;
  91         struct mlx4_mr          mmr;
  92         struct ib_umem         *umem;
  93 };
  94
  95 struct mlx4_ib_wq {
  96         u64                    *wrid;
  97         spinlock_t              lock;
  98         int                     max;
  99         int                     max_gs;
 100         int                     offset;
 101         int                     wqe_shift;
 102         unsigned                head;
 103         unsigned                tail;
 104 };
 105
 106 struct mlx4_ib_qp {
 107         struct ib_qp            ibqp;
 108         struct mlx4_qp          mqp;
 109         struct mlx4_buf         buf;
 110
 111         struct mlx4_ib_db       db;
 112         struct mlx4_ib_wq       rq;
 113
 114         u32                     doorbell_qpn;
 115         __be32                  sq_signal_bits;
 116         struct mlx4_ib_wq       sq;
 117
 118         struct ib_umem         *umem;
 119         struct mlx4_mtt         mtt;
 120         int                     buf_size;
 121         struct mutex            mutex;
 122         u8                      port;
 123         u8                      alt_port;
 124         u8                      atomic_rd_en;
 125         u8                      resp_depth;
 126         u8                      state;
 127 };
 128
 129 struct mlx4_ib_srq {
 130         struct ib_srq           ibsrq;
 131         struct mlx4_srq         msrq;
 132         struct mlx4_buf         buf;
 133         struct mlx4_ib_db       db;
 134         u64                    *wrid;
 135         spinlock_t              lock;
 136         int                     head;
 137         int                     tail;
 138         u16                     wqe_ctr;
 139         struct ib_umem         *umem;
 140         struct mlx4_mtt         mtt;
 141         struct mutex            mutex;
 142 };
 143
 144 struct mlx4_ib_ah {
 145         struct ib_ah            ibah;
 146         struct mlx4_av          av;
 147 };
 148
 149 struct mlx4_ib_dev {
 150         struct ib_device        ib_dev;
 151         struct mlx4_dev        *dev;
 152         void __iomem           *uar_map;
 153
 154         struct list_head        pgdir_list;
 155         struct mutex            pgdir_mutex;
 156
 157         struct mlx4_uar         priv_uar;
 158         u32                     priv_pdn;
 159         MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
 160
 161         struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
 162         struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
 163         spinlock_t              sm_lock;
 164
 165         struct mutex            cap_mask_mutex;
 166 };
 167
 168 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
 169 {
 170         return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
 171 }
 172
 173 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 174 {
 175         return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
 176 }
 177
 178 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
 179 {
 180         return container_of(ibpd, struct mlx4_ib_pd, ibpd);
 181 }
 182
 183 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
 184 {
 185         return container_of(ibcq, struct mlx4_ib_cq, ibcq);
 186 }
 187
 188 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
 189 {
 190         return container_of(mcq, struct mlx4_ib_cq, mcq);
 191 }
 192
 193 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
 194 {
 195         return container_of(ibmr, struct mlx4_ib_mr, ibmr);
 196 }
 197
 198 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
 199 {
 200         return container_of(ibqp, struct mlx4_ib_qp, ibqp);
 201 }
 202
 203 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
 204 {
 205         return container_of(mqp, struct mlx4_ib_qp, mqp);
 206 }
 207
 208 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
 209 {
 210         return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
 211 }
 212
 213 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
 214 {
 215         return container_of(msrq, struct mlx4_ib_srq, msrq);
 216 }
 217
 218 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
 219 {
 220         return container_of(ibah, struct mlx4_ib_ah, ibah);
 221 }
 222
 223 int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
 224 void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
 225 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
 226                         struct mlx4_ib_db *db);
 227 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
 228
 229 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
 230 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
 231                            struct ib_umem *umem);
 232 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 233                                   u64 virt_addr, int access_flags,
 234                                   struct ib_udata *udata);
 235 int mlx4_ib_dereg_mr(struct ib_mr *mr);
 236
 237 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
 238                                 struct ib_ucontext *context,
 239                                 struct ib_udata *udata);
 240 int mlx4_ib_destroy_cq(struct ib_cq *cq);
 241 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 242 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
 243 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 244 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
 245
 246 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
 247 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
 248 int mlx4_ib_destroy_ah(struct ib_ah *ah);
 249
 250 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 251                                   struct ib_srq_init_attr *init_attr,
 252                                   struct ib_udata *udata);
 253 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 254                        enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 255 int mlx4_ib_destroy_srq(struct ib_srq *srq);
 256 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
 257 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 258                           struct ib_recv_wr **bad_wr);
 259
 260 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
 261                                 struct ib_qp_init_attr *init_attr,
 262                                 struct ib_udata *udata);
 263 int mlx4_ib_destroy_qp(struct ib_qp *qp);
 264 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 265                       int attr_mask, struct ib_udata *udata);
 266 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 267                       struct ib_send_wr **bad_wr);
 268 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 269                       struct ib_recv_wr **bad_wr);
 270
 271 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
 272                  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 273                  void *in_mad, void *response_mad);
 274 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 275                         struct ib_wc *in_wc, struct ib_grh *in_grh,
 276                         struct ib_mad *in_mad, struct ib_mad *out_mad);
 277 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
 278 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
 279
 280 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
 281 {
 282         return !!(ah->av.g_slid & 0x80);
 283 }
 284
 285 #endif /* MLX4_IB_H */