1 /** @file 2 This file declares the SMBus definitions defined in SmBus Specifciation V2.0 3 and defined in PI1.0 specification volume 5. 4 5 Copyright (c) 2007 - 2008, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #ifndef _SMBUS_H_ 17 #define _SMBUS_H_ 18 19 20 /// 21 /// UDID of SMBUS device. 22 /// 23 typedef struct { 24 UINT32 VendorSpecificId; 25 UINT16 SubsystemDeviceId; 26 UINT16 SubsystemVendorId; 27 UINT16 Interface; 28 UINT16 DeviceId; 29 UINT16 VendorId; 30 UINT8 VendorRevision; 31 UINT8 DeviceCapabilities; 32 } EFI_SMBUS_UDID; 33 34 /// 35 /// Smbus Device Address 36 /// 37 typedef struct { 38 /// 39 /// The SMBUS hardware address to which the SMBUS device is preassigned or allocated. 40 /// 41 UINTN SmbusDeviceAddress : 7; 42 } EFI_SMBUS_DEVICE_ADDRESS; 43 44 typedef struct { 45 /// 46 /// The SMBUS hardware address to which the SMBUS device is preassigned or 47 /// allocated. Type EFI_SMBUS_DEVICE_ADDRESS is defined in EFI_PEI_SMBUS2_PPI.Execute(). 48 /// 49 EFI_SMBUS_DEVICE_ADDRESS SmbusDeviceAddress; 50 /// 51 /// The SMBUS Unique Device Identifier (UDID) as defined in EFI_SMBUS_UDID. 52 /// Type EFI_SMBUS_UDID is defined in EFI_PEI_SMBUS2_PPI.ArpDevice(). 53 /// 54 EFI_SMBUS_UDID SmbusDeviceUdid; 55 } EFI_SMBUS_DEVICE_MAP; 56 57 /// 58 /// Smbus Operations 59 /// 60 typedef enum _EFI_SMBUS_OPERATION { 61 EfiSmbusQuickRead, 62 EfiSmbusQuickWrite, 63 EfiSmbusReceiveByte, 64 EfiSmbusSendByte, 65 EfiSmbusReadByte, 66 EfiSmbusWriteByte, 67 EfiSmbusReadWord, 68 EfiSmbusWriteWord, 69 EfiSmbusReadBlock, 70 EfiSmbusWriteBlock, 71 EfiSmbusProcessCall, 72 EfiSmbusBWBRProcessCall 73 } EFI_SMBUS_OPERATION; 74 75 /// 76 /// EFI_SMBUS_DEVICE_COMMAND 77 /// 78 typedef UINTN EFI_SMBUS_DEVICE_COMMAND; 79 80 #endif 81 82
