drivers/infiniband/sw/rdmavt/mr.h

   1 #ifndef DEF_RVTMR_H
   2 #define DEF_RVTMR_H
   3
   4 /*
   5  * Copyright(c) 2016 Intel Corporation.
   6  *
   7  * This file is provided under a dual BSD/GPLv2 license.  When using or
   8  * redistributing this file, you may do so under either license.
   9  *
  10  * GPL LICENSE SUMMARY
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * BSD LICENSE
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  *
  27  *  - Redistributions of source code must retain the above copyright
  28  *    notice, this list of conditions and the following disclaimer.
  29  *  - Redistributions in binary form must reproduce the above copyright
  30  *    notice, this list of conditions and the following disclaimer in
  31  *    the documentation and/or other materials provided with the
  32  *    distribution.
  33  *  - Neither the name of Intel Corporation nor the names of its
  34  *    contributors may be used to endorse or promote products derived
  35  *    from this software without specific prior written permission.
  36  *
  37  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  38  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  39  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  40  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  41  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  44  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  45  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  46  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  47  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  48  *
  49  */
  50
  51 #include <rdma/rdma_vt.h>
  52 struct rvt_fmr {
  53         struct ib_fmr ibfmr;
  54         struct rvt_mregion mr;        /* must be last */
  55 };
  56
  57 struct rvt_mr {
  58         struct ib_mr ibmr;
  59         struct ib_umem *umem;
  60         struct rvt_mregion mr;  /* must be last */
  61 };
  62
  63 static inline struct rvt_fmr *to_ifmr(struct ib_fmr *ibfmr)
  64 {
  65         return container_of(ibfmr, struct rvt_fmr, ibfmr);
  66 }
  67
  68 static inline struct rvt_mr *to_imr(struct ib_mr *ibmr)
  69 {
  70         return container_of(ibmr, struct rvt_mr, ibmr);
  71 }
  72
  73 int rvt_driver_mr_init(struct rvt_dev_info *rdi);
  74 void rvt_mr_exit(struct rvt_dev_info *rdi);
  75
  76 /* Mem Regions */
  77 struct ib_mr *rvt_get_dma_mr(struct ib_pd *pd, int acc);
  78 struct ib_mr *rvt_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
  79                               u64 virt_addr, int mr_access_flags,
  80                               struct ib_udata *udata);
  81 int rvt_dereg_mr(struct ib_mr *ibmr);
  82 struct ib_mr *rvt_alloc_mr(struct ib_pd *pd,
  83                            enum ib_mr_type mr_type,
  84                            u32 max_num_sg);
  85 int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
  86                   int sg_nents, unsigned int *sg_offset);
  87 struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
  88                              struct ib_fmr_attr *fmr_attr);
  89 int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
  90                      int list_len, u64 iova);
  91 int rvt_unmap_fmr(struct list_head *fmr_list);
  92 int rvt_dealloc_fmr(struct ib_fmr *ibfmr);
  93
  94 #endif          /* DEF_RVTMR_H */