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1 | /* |
2 | * drivers/net/ethernet/mellanox/mlxsw/emad.h | |
3 | * Copyright (c) 2015 Mellanox Technologies. All rights reserved. | |
4 | * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com> | |
5 | * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com> | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions are met: | |
9 | * | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the names of the copyright holders nor the names of its | |
16 | * contributors may be used to endorse or promote products derived from | |
17 | * this software without specific prior written permission. | |
18 | * | |
19 | * Alternatively, this software may be distributed under the terms of the | |
20 | * GNU General Public License ("GPL") version 2 as published by the Free | |
21 | * Software Foundation. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
24 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
32 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
33 | * POSSIBILITY OF SUCH DAMAGE. | |
34 | */ | |
35 | ||
36 | #ifndef _MLXSW_EMAD_H | |
37 | #define _MLXSW_EMAD_H | |
38 | ||
39 | #define MLXSW_EMAD_MAX_FRAME_LEN 1518 /* Length in u8 */ | |
40 | #define MLXSW_EMAD_MAX_RETRY 5 | |
41 | ||
42 | /* EMAD Ethernet header */ | |
43 | #define MLXSW_EMAD_ETH_HDR_LEN 0x10 /* Length in u8 */ | |
44 | #define MLXSW_EMAD_EH_DMAC "\x01\x02\xc9\x00\x00\x01" | |
45 | #define MLXSW_EMAD_EH_SMAC "\x00\x02\xc9\x01\x02\x03" | |
46 | #define MLXSW_EMAD_EH_ETHERTYPE 0x8932 | |
47 | #define MLXSW_EMAD_EH_MLX_PROTO 0 | |
48 | #define MLXSW_EMAD_EH_PROTO_VERSION 0 | |
49 | ||
50 | /* EMAD TLV Types */ | |
51 | enum { | |
52 | MLXSW_EMAD_TLV_TYPE_END, | |
53 | MLXSW_EMAD_TLV_TYPE_OP, | |
54 | MLXSW_EMAD_TLV_TYPE_DR, | |
55 | MLXSW_EMAD_TLV_TYPE_REG, | |
56 | MLXSW_EMAD_TLV_TYPE_USERDATA, | |
57 | MLXSW_EMAD_TLV_TYPE_OOBETH, | |
58 | }; | |
59 | ||
60 | /* OP TLV */ | |
61 | #define MLXSW_EMAD_OP_TLV_LEN 4 /* Length in u32 */ | |
62 | ||
63 | enum { | |
64 | MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS = 1, | |
65 | MLXSW_EMAD_OP_TLV_CLASS_IPC = 2, | |
66 | }; | |
67 | ||
68 | enum mlxsw_emad_op_tlv_status { | |
69 | MLXSW_EMAD_OP_TLV_STATUS_SUCCESS, | |
70 | MLXSW_EMAD_OP_TLV_STATUS_BUSY, | |
71 | MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED, | |
72 | MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV, | |
73 | MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED, | |
74 | MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED, | |
75 | MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED, | |
76 | MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER, | |
77 | MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE, | |
78 | MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK, | |
79 | MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR = 0x70, | |
80 | }; | |
81 | ||
82 | static inline char *mlxsw_emad_op_tlv_status_str(u8 status) | |
83 | { | |
84 | switch (status) { | |
85 | case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS: | |
86 | return "operation performed"; | |
87 | case MLXSW_EMAD_OP_TLV_STATUS_BUSY: | |
88 | return "device is busy"; | |
89 | case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED: | |
90 | return "version not supported"; | |
91 | case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV: | |
92 | return "unknown TLV"; | |
93 | case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED: | |
94 | return "register not supported"; | |
95 | case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED: | |
96 | return "class not supported"; | |
97 | case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED: | |
98 | return "method not supported"; | |
99 | case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER: | |
100 | return "bad parameter"; | |
101 | case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE: | |
102 | return "resource not available"; | |
103 | case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK: | |
104 | return "acknowledged. retransmit"; | |
105 | case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR: | |
106 | return "internal error"; | |
107 | default: | |
108 | return "*UNKNOWN*"; | |
109 | } | |
110 | } | |
111 | ||
112 | enum { | |
113 | MLXSW_EMAD_OP_TLV_REQUEST, | |
114 | MLXSW_EMAD_OP_TLV_RESPONSE | |
115 | }; | |
116 | ||
117 | enum { | |
118 | MLXSW_EMAD_OP_TLV_METHOD_QUERY = 1, | |
119 | MLXSW_EMAD_OP_TLV_METHOD_WRITE = 2, | |
120 | MLXSW_EMAD_OP_TLV_METHOD_SEND = 3, | |
121 | MLXSW_EMAD_OP_TLV_METHOD_EVENT = 5, | |
122 | }; | |
123 | ||
124 | /* END TLV */ | |
125 | #define MLXSW_EMAD_END_TLV_LEN 1 /* Length in u32 */ | |
126 | ||
127 | #endif |