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_*/
133
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