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 */
19 enum {
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 
29 enum {
30 	MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS = 1,
31 	MLXSW_EMAD_OP_TLV_CLASS_IPC = 2,
32 };
33 
34 enum 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 
mlxsw_emad_op_tlv_status_str(u8 status)48 static 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 
78 enum {
79 	MLXSW_EMAD_OP_TLV_REQUEST,
80 	MLXSW_EMAD_OP_TLV_RESPONSE
81 };
82 
83 enum {
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