/** @file
  This file declares the SMBus definitions defined in SmBus Specifciation
  V2.0.

  Copyright (c) 2007, Intel Corporation                                                         
  All rights reserved. This program and the accompanying materials                          
  are licensed and made available under the terms and conditions of the BSD License         
  which accompanies this distribution.  The full text of the license may be found at        
  http://opensource.org/licenses/bsd-license.php                                            

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

  @par Revision Reference:
  These definitions are defined in System Management Bus (SmBus) Specification V2.0.

**/

#ifndef _SMBUS_H_
#define _SMBUS_H_


///
/// UDID of SMBUS device.
///
typedef struct {
  UINT32  VendorSpecificId;
  UINT16  SubsystemDeviceId;
  UINT16  SubsystemVendorId;
  UINT16  Interface;
  UINT16  DeviceId;
  UINT16  VendorId;
  UINT8   VendorRevision;
  UINT8   DeviceCapabilities;
} EFI_SMBUS_UDID;

///
/// Smbus Device Address, Smbus Device Command, Smbus Operations
///
typedef struct {
  UINTN SmbusDeviceAddress : 7;
} EFI_SMBUS_DEVICE_ADDRESS;

typedef enum _EFI_SMBUS_OPERATION
{
  EfiSmbusQuickRead,
  EfiSmbusQuickWrite,
  EfiSmbusReceiveByte,
  EfiSmbusSendByte,
  EfiSmbusReadByte,
  EfiSmbusWriteByte,
  EfiSmbusReadWord,
  EfiSmbusWriteWord,
  EfiSmbusReadBlock,
  EfiSmbusWriteBlock,
  EfiSmbusProcessCall,
  EfiSmbusBWBRProcessCall
} EFI_SMBUS_OPERATION;

#endif