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ehca_mrmw.h
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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 <[email protected]>
7  * Christoph Raisch <[email protected]>
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_*/
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