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/** @file
This file defines the manageability MCTP protocol specific transport data.
Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#pragma once
#include <Library/ManageabilityTransportLib.h>
#define MCTP_KCS_HEADER_VERSION 0x01
// According to SMBUS spec, the polynomial is:
// C(x) = X^8 + X^2 + X^1 + 1, which is 0x107,
// just ignore bit8 in definition.
#define MCTP_KCS_PACKET_ERROR_CODE_POLY 0x07
///
/// The MCTP Message header which is apart from
/// the payload.
///
typedef struct {
UINT8 IntegrityCheck : 1; ///< Message integrity check.
UINT8 MessageType : 7; ///< Message type.
} MANAGEABILITY_MCTP_MESSAGE_HEADER;
typedef struct {
UINT8 SourceEndpointId;
UINT8 DestinationEndpointId;
MANAGEABILITY_MCTP_MESSAGE_HEADER MessageHeader;
} MANAGEABILITY_MCTP_TRANSPORT_HEADER;
typedef struct {
UINT8 NetFunc; ///< Message integrity check.
UINT8 DefiningBody; ///< Message type.
UINT8 ByteCount; ///< Byte count of payload.
} MANAGEABILITY_MCTP_KCS_HEADER;
typedef struct {
UINT8 Pec; ///< MCTP over KCS Packet Error Code.
} MANAGEABILITY_MCTP_KCS_TRAILER;
#define MCTP_KCS_NETFN_LUN 0xb0
#define DEFINING_BODY_DMTF_PRE_OS_WORKING_GROUP 0x01
// This is used to track the response message. This value
// is not defined by the specification.
#define MCTP_MESSAGE_TAG 0x1
#define MCTP_MESSAGE_TAG_OWNER_REQUEST 1
#define MCTP_MESSAGE_TAG_OWNER_RESPONSE 0
#define MCTP_PACKET_SEQUENCE_MASK 0x3
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