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