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87f0faad DL |
1 | /* |
2 | * Copyright(c) 2017 Intel Corporation. | |
3 | * | |
4 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
5 | * redistributing this file, you may do so under either license. | |
6 | * | |
7 | * GPL LICENSE SUMMARY | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of version 2 of the GNU General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * BSD LICENSE | |
19 | * | |
20 | * Redistribution and use in source and binary forms, with or without | |
21 | * modification, are permitted provided that the following conditions | |
22 | * are met: | |
23 | * | |
24 | * - Redistributions of source code must retain the above copyright | |
25 | * notice, this list of conditions and the following disclaimer. | |
26 | * - Redistributions in binary form must reproduce the above copyright | |
27 | * notice, this list of conditions and the following disclaimer in | |
28 | * the documentation and/or other materials provided with the | |
29 | * distribution. | |
30 | * - Neither the name of Intel Corporation nor the names of its | |
31 | * contributors may be used to endorse or promote products derived | |
32 | * from this software without specific prior written permission. | |
33 | * | |
34 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
35 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
36 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
37 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
38 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
39 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
41 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
42 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
43 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
45 | * | |
46 | */ | |
47 | ||
48 | #ifndef OPA_ADDR_H | |
49 | #define OPA_ADDR_H | |
50 | ||
13c19222 DH |
51 | #include <rdma/opa_smi.h> |
52 | ||
87f0faad DL |
53 | #define OPA_SPECIAL_OUI (0x00066AULL) |
54 | #define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x))) | |
582faf31 DC |
55 | #define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \ |
56 | ? 0 : x) | |
88733e3b | 57 | #define OPA_GID_INDEX 0x1 |
13c19222 DH |
58 | /** |
59 | * 0xF8 - 4 bits of multicast range and 1 bit for collective range | |
60 | * Example: For 24 bit LID space, | |
61 | * Multicast range: 0xF00000 to 0xF7FFFF | |
62 | * Collective range: 0xF80000 to 0xFFFFFE | |
63 | */ | |
64 | #define OPA_MCAST_NR 0x4 /* Number of top bits set */ | |
65 | #define OPA_COLLECTIVE_NR 0x1 /* Number of bits after MCAST_NR */ | |
66 | ||
87f0faad DL |
67 | /** |
68 | * ib_is_opa_gid: Returns true if the top 24 bits of the gid | |
69 | * contains the OPA_STL_OUI identifier. This identifies that | |
70 | * the provided gid is a special purpose GID meant to carry | |
71 | * extended LID information. | |
72 | * | |
73 | * @gid: The Global identifier | |
74 | */ | |
d98bb7f7 | 75 | static inline bool ib_is_opa_gid(const union ib_gid *gid) |
87f0faad DL |
76 | { |
77 | return ((be64_to_cpu(gid->global.interface_id) >> 40) == | |
78 | OPA_SPECIAL_OUI); | |
79 | } | |
80 | ||
81 | /** | |
82 | * opa_get_lid_from_gid: Returns the last 32 bits of the gid. | |
83 | * OPA devices use one of the gids in the gid table to also | |
84 | * store the lid. | |
85 | * | |
86 | * @gid: The Global identifier | |
87 | */ | |
d98bb7f7 | 88 | static inline u32 opa_get_lid_from_gid(const union ib_gid *gid) |
87f0faad DL |
89 | { |
90 | return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF; | |
91 | } | |
e92aa00a HD |
92 | |
93 | /** | |
94 | * opa_is_extended_lid: Returns true if dlid or slid are | |
95 | * extended. | |
96 | * | |
97 | * @dlid: The DLID | |
98 | * @slid: The SLID | |
99 | */ | |
100 | static inline bool opa_is_extended_lid(u32 dlid, u32 slid) | |
101 | { | |
102 | if ((be32_to_cpu(dlid) >= | |
103 | be16_to_cpu(IB_MULTICAST_LID_BASE)) || | |
104 | (be32_to_cpu(slid) >= | |
105 | be16_to_cpu(IB_MULTICAST_LID_BASE))) | |
106 | return true; | |
107 | else | |
108 | return false; | |
109 | } | |
13c19222 DH |
110 | |
111 | /* Get multicast lid base */ | |
112 | static inline u32 opa_get_mcast_base(u32 nr_top_bits) | |
113 | { | |
114 | return (be32_to_cpu(OPA_LID_PERMISSIVE) << (32 - nr_top_bits)); | |
115 | } | |
116 | ||
87f0faad | 117 | #endif /* OPA_ADDR_H */ |