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