drivers/infiniband/hw/ehca/ehca_mrmw.h

   1 /*
   2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
   3  *
   4  *  MR/MW declarations and inline functions
   5  *
   6  *  Authors: Dietmar Decker <ddecker@de.ibm.com>
   7  *           Christoph Raisch <raisch@de.ibm.com>
   8  *
   9  *  Copyright (c) 2005 IBM Corporation
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  14  *  BSD.
  15  *
  16  * OpenIB BSD License
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions are met:
  20  *
  21  * Redistributions of source code must retain the above copyright notice, this
  22  * list of conditions and the following disclaimer.
  23  *
  24  * Redistributions in binary form must reproduce the above copyright notice,
  25  * this list of conditions and the following disclaimer in the documentation
  26  * and/or other materials
  27  * provided with the distribution.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  33  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  36  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  37  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39  * POSSIBILITY OF SUCH DAMAGE.
  40  */
  41
  42 #ifndef _EHCA_MRMW_H_
  43 #define _EHCA_MRMW_H_
  44
  45 enum ehca_reg_type {
  46         EHCA_REG_MR,
  47         EHCA_REG_BUSMAP_MR
  48 };
  49
  50 int ehca_reg_mr(struct ehca_shca *shca,
  51                 struct ehca_mr *e_mr,
  52                 u64 *iova_start,
  53                 u64 size,
  54                 int acl,
  55                 struct ehca_pd *e_pd,
  56                 struct ehca_mr_pginfo *pginfo,
  57                 u32 *lkey,
  58                 u32 *rkey,
  59                 enum ehca_reg_type reg_type);
  60
  61 int ehca_reg_mr_rpages(struct ehca_shca *shca,
  62                        struct ehca_mr *e_mr,
  63                        struct ehca_mr_pginfo *pginfo);
  64
  65 int ehca_rereg_mr(struct ehca_shca *shca,
  66                   struct ehca_mr *e_mr,
  67                   u64 *iova_start,
  68                   u64 size,
  69                   int mr_access_flags,
  70                   struct ehca_pd *e_pd,
  71                   struct ehca_mr_pginfo *pginfo,
  72                   u32 *lkey,
  73                   u32 *rkey);
  74
  75 int ehca_unmap_one_fmr(struct ehca_shca *shca,
  76                        struct ehca_mr *e_fmr);
  77
  78 int ehca_reg_smr(struct ehca_shca *shca,
  79                  struct ehca_mr *e_origmr,
  80                  struct ehca_mr *e_newmr,
  81                  u64 *iova_start,
  82                  int acl,
  83                  struct ehca_pd *e_pd,
  84                  u32 *lkey,
  85                  u32 *rkey);
  86
  87 int ehca_reg_internal_maxmr(struct ehca_shca *shca,
  88                             struct ehca_pd *e_pd,
  89                             struct ehca_mr **maxmr);
  90
  91 int ehca_reg_maxmr(struct ehca_shca *shca,
  92                    struct ehca_mr *e_newmr,
  93                    u64 *iova_start,
  94                    int acl,
  95                    struct ehca_pd *e_pd,
  96                    u32 *lkey,
  97                    u32 *rkey);
  98
  99 int ehca_dereg_internal_maxmr(struct ehca_shca *shca);
 100
 101 int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array,
 102                                   int num_phys_buf,
 103                                   u64 *iova_start,
 104                                   u64 *size);
 105
 106 int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
 107                              u64 *page_list,
 108                              int list_len);
 109
 110 int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo,
 111                      u32 number,
 112                      u64 *kpage);
 113
 114 int ehca_mr_is_maxmr(u64 size,
 115                      u64 *iova_start);
 116
 117 void ehca_mrmw_map_acl(int ib_acl,
 118                        u32 *hipz_acl);
 119
 120 void ehca_mrmw_set_pgsize_hipz_acl(u32 pgsize, u32 *hipz_acl);
 121
 122 void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
 123                                int *ib_acl);
 124
 125 void ehca_mr_deletenew(struct ehca_mr *mr);
 126
 127 int ehca_create_busmap(void);
 128
 129 void ehca_destroy_busmap(void);
 130
 131 extern struct ib_dma_mapping_ops ehca_dma_mapping_ops;
 132 #endif  /*_EHCA_MRMW_H_*/