drivers/net/ethernet/mellanox/mlxsw/emad.h

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/emad.h
   3  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
   5  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the names of the copyright holders nor the names of its
  16  *    contributors may be used to endorse or promote products derived from
  17  *    this software without specific prior written permission.
  18  *
  19  * Alternatively, this software may be distributed under the terms of the
  20  * GNU General Public License ("GPL") version 2 as published by the Free
  21  * Software Foundation.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #ifndef _MLXSW_EMAD_H
  37 #define _MLXSW_EMAD_H
  38
  39 #define MLXSW_EMAD_MAX_FRAME_LEN 1518   /* Length in u8 */
  40 #define MLXSW_EMAD_MAX_RETRY 5
  41
  42 /* EMAD Ethernet header */
  43 #define MLXSW_EMAD_ETH_HDR_LEN 0x10     /* Length in u8 */
  44 #define MLXSW_EMAD_EH_DMAC "\x01\x02\xc9\x00\x00\x01"
  45 #define MLXSW_EMAD_EH_SMAC "\x00\x02\xc9\x01\x02\x03"
  46 #define MLXSW_EMAD_EH_ETHERTYPE 0x8932
  47 #define MLXSW_EMAD_EH_MLX_PROTO 0
  48 #define MLXSW_EMAD_EH_PROTO_VERSION 0
  49
  50 /* EMAD TLV Types */
  51 enum {
  52         MLXSW_EMAD_TLV_TYPE_END,
  53         MLXSW_EMAD_TLV_TYPE_OP,
  54         MLXSW_EMAD_TLV_TYPE_DR,
  55         MLXSW_EMAD_TLV_TYPE_REG,
  56         MLXSW_EMAD_TLV_TYPE_USERDATA,
  57         MLXSW_EMAD_TLV_TYPE_OOBETH,
  58 };
  59
  60 /* OP TLV */
  61 #define MLXSW_EMAD_OP_TLV_LEN 4         /* Length in u32 */
  62
  63 enum {
  64         MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS = 1,
  65         MLXSW_EMAD_OP_TLV_CLASS_IPC = 2,
  66 };
  67
  68 enum mlxsw_emad_op_tlv_status {
  69         MLXSW_EMAD_OP_TLV_STATUS_SUCCESS,
  70         MLXSW_EMAD_OP_TLV_STATUS_BUSY,
  71         MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED,
  72         MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV,
  73         MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED,
  74         MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED,
  75         MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED,
  76         MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER,
  77         MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE,
  78         MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK,
  79         MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR = 0x70,
  80 };
  81
  82 static inline char *mlxsw_emad_op_tlv_status_str(u8 status)
  83 {
  84         switch (status) {
  85         case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS:
  86                 return "operation performed";
  87         case MLXSW_EMAD_OP_TLV_STATUS_BUSY:
  88                 return "device is busy";
  89         case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED:
  90                 return "version not supported";
  91         case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV:
  92                 return "unknown TLV";
  93         case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED:
  94                 return "register not supported";
  95         case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED:
  96                 return "class not supported";
  97         case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED:
  98                 return "method not supported";
  99         case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER:
 100                 return "bad parameter";
 101         case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE:
 102                 return "resource not available";
 103         case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK:
 104                 return "acknowledged. retransmit";
 105         case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR:
 106                 return "internal error";
 107         default:
 108                 return "*UNKNOWN*";
 109         }
 110 }
 111
 112 enum {
 113         MLXSW_EMAD_OP_TLV_REQUEST,
 114         MLXSW_EMAD_OP_TLV_RESPONSE
 115 };
 116
 117 enum {
 118         MLXSW_EMAD_OP_TLV_METHOD_QUERY = 1,
 119         MLXSW_EMAD_OP_TLV_METHOD_WRITE = 2,
 120         MLXSW_EMAD_OP_TLV_METHOD_SEND = 3,
 121         MLXSW_EMAD_OP_TLV_METHOD_EVENT = 5,
 122 };
 123
 124 /* END TLV */
 125 #define MLXSW_EMAD_END_TLV_LEN 1        /* Length in u32 */
 126
 127 #endif