1/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
3
4#ifndef _MLXSW_EMAD_H
5#define _MLXSW_EMAD_H
6
7#define MLXSW_EMAD_MAX_FRAME_LEN 1518 /* Length in u8 */
8#define MLXSW_EMAD_MAX_RETRY 5
9
10/* EMAD Ethernet header */
11#define MLXSW_EMAD_ETH_HDR_LEN 0x10 /* Length in u8 */
12#define MLXSW_EMAD_EH_DMAC "\x01\x02\xc9\x00\x00\x01"
13#define MLXSW_EMAD_EH_SMAC "\x00\x02\xc9\x01\x02\x03"
14#define MLXSW_EMAD_EH_ETHERTYPE 0x8932
15#define MLXSW_EMAD_EH_MLX_PROTO 0
16#define MLXSW_EMAD_EH_PROTO_VERSION 0
17
18/* EMAD TLV Types */
19enum {
20 MLXSW_EMAD_TLV_TYPE_END,
21 MLXSW_EMAD_TLV_TYPE_OP,
22 MLXSW_EMAD_TLV_TYPE_STRING,
23 MLXSW_EMAD_TLV_TYPE_REG,
24 MLXSW_EMAD_TLV_TYPE_LATENCY,
25};
26
27/* OP TLV */
28#define MLXSW_EMAD_OP_TLV_LEN 4 /* Length in u32 */
29
30enum {
31 MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS = 1,
32 MLXSW_EMAD_OP_TLV_CLASS_IPC = 2,
33};
34
35enum mlxsw_emad_op_tlv_status {
36 MLXSW_EMAD_OP_TLV_STATUS_SUCCESS,
37 MLXSW_EMAD_OP_TLV_STATUS_BUSY,
38 MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED,
39 MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV,
40 MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED,
41 MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED,
42 MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED,
43 MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER,
44 MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE,
45 MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK,
46 MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR = 0x70,
47};
48
49static inline char *mlxsw_emad_op_tlv_status_str(u8 status)
50{
51 switch (status) {
52 case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS:
53 return "operation performed";
54 case MLXSW_EMAD_OP_TLV_STATUS_BUSY:
55 return "device is busy";
56 case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED:
57 return "version not supported";
58 case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV:
59 return "unknown TLV";
60 case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED:
61 return "register not supported";
62 case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED:
63 return "class not supported";
64 case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED:
65 return "method not supported";
66 case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER:
67 return "bad parameter";
68 case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE:
69 return "resource not available";
70 case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK:
71 return "acknowledged. retransmit";
72 case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR:
73 return "internal error";
74 default:
75 return "*UNKNOWN*";
76 }
77}
78
79enum {
80 MLXSW_EMAD_OP_TLV_REQUEST,
81 MLXSW_EMAD_OP_TLV_RESPONSE
82};
83
84enum {
85 MLXSW_EMAD_OP_TLV_METHOD_QUERY = 1,
86 MLXSW_EMAD_OP_TLV_METHOD_WRITE = 2,
87 MLXSW_EMAD_OP_TLV_METHOD_SEND = 3,
88 MLXSW_EMAD_OP_TLV_METHOD_EVENT = 5,
89};
90
91/* STRING TLV */
92#define MLXSW_EMAD_STRING_TLV_LEN 33 /* Length in u32 */
93
94/* LATENCY TLV */
95#define MLXSW_EMAD_LATENCY_TLV_LEN 7 /* Length in u32 */
96
97/* END TLV */
98#define MLXSW_EMAD_END_TLV_LEN 1 /* Length in u32 */
99
100#endif
101

source code of linux/drivers/net/ethernet/mellanox/mlxsw/emad.h