MdePkg/Include/IndustryStandard/SmBus.h

   1 /** @file
   2   This file declares the SMBus definitions defined in SmBus Specifciation V2.0.
   3
   4   Copyright (c) 2007 - 2008, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _SMBUS_H_
  16 #define _SMBUS_H_
  17
  18
  19 ///
  20 /// UDID of SMBUS device.
  21 ///
  22 typedef struct {
  23   UINT32  VendorSpecificId;
  24   UINT16  SubsystemDeviceId;
  25   UINT16  SubsystemVendorId;
  26   UINT16  Interface;
  27   UINT16  DeviceId;
  28   UINT16  VendorId;
  29   UINT8   VendorRevision;
  30   UINT8   DeviceCapabilities;
  31 } EFI_SMBUS_UDID;
  32
  33 ///
  34 /// Smbus Device Address
  35 ///
  36 typedef struct {
  37   UINTN SmbusDeviceAddress : 7;
  38 } EFI_SMBUS_DEVICE_ADDRESS;
  39
  40 ///
  41 /// Smbus Operations
  42 ///
  43 typedef enum _EFI_SMBUS_OPERATION
  44 {
  45   EfiSmbusQuickRead,
  46   EfiSmbusQuickWrite,
  47   EfiSmbusReceiveByte,
  48   EfiSmbusSendByte,
  49   EfiSmbusReadByte,
  50   EfiSmbusWriteByte,
  51   EfiSmbusReadWord,
  52   EfiSmbusWriteWord,
  53   EfiSmbusReadBlock,
  54   EfiSmbusWriteBlock,
  55   EfiSmbusProcessCall,
  56   EfiSmbusBWBRProcessCall
  57 } EFI_SMBUS_OPERATION;
  58
  59 #endif
  60