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};
25
26/* OP TLV */
27#define MLXSW_EMAD_OP_TLV_LEN 4		/* Length in u32 */
28
29enum {
30	MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS = 1,
31	MLXSW_EMAD_OP_TLV_CLASS_IPC = 2,
32};
33
34enum mlxsw_emad_op_tlv_status {
35	MLXSW_EMAD_OP_TLV_STATUS_SUCCESS,
36	MLXSW_EMAD_OP_TLV_STATUS_BUSY,
37	MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED,
38	MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV,
39	MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED,
40	MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED,
41	MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED,
42	MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER,
43	MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE,
44	MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK,
45	MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR = 0x70,
46};
47
48static inline char *mlxsw_emad_op_tlv_status_str(u8 status)
49{
50	switch (status) {
51	case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS:
52		return "operation performed";
53	case MLXSW_EMAD_OP_TLV_STATUS_BUSY:
54		return "device is busy";
55	case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED:
56		return "version not supported";
57	case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV:
58		return "unknown TLV";
59	case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED:
60		return "register not supported";
61	case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED:
62		return "class not supported";
63	case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED:
64		return "method not supported";
65	case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER:
66		return "bad parameter";
67	case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE:
68		return "resource not available";
69	case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK:
70		return "acknowledged. retransmit";
71	case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR:
72		return "internal error";
73	default:
74		return "*UNKNOWN*";
75	}
76}
77
78enum {
79	MLXSW_EMAD_OP_TLV_REQUEST,
80	MLXSW_EMAD_OP_TLV_RESPONSE
81};
82
83enum {
84	MLXSW_EMAD_OP_TLV_METHOD_QUERY = 1,
85	MLXSW_EMAD_OP_TLV_METHOD_WRITE = 2,
86	MLXSW_EMAD_OP_TLV_METHOD_SEND = 3,
87	MLXSW_EMAD_OP_TLV_METHOD_EVENT = 5,
88};
89
90/* STRING TLV */
91#define MLXSW_EMAD_STRING_TLV_LEN 33	/* Length in u32 */
92
93/* END TLV */
94#define MLXSW_EMAD_END_TLV_LEN 1	/* Length in u32 */
95
96#endif
97