emad.h

  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