2 Disk IO protocol as defined in the EFI 1.0 specification.
4 The Disk IO protocol is used to convert block oriented devices into byte
5 oriented devices. The Disk IO protocol is intended to layer on top of the
8 Copyright (c) 2006, Intel Corporation
9 All rights reserved. This program and the accompanying materials
10 are licensed and made available under the terms and conditions of the BSD License
11 which accompanies this distribution. The full text of the license may be found at
12 http://opensource.org/licenses/bsd-license.php
14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
24 #define EFI_DISK_IO_PROTOCOL_GUID \
26 0xce345171, 0xba0b, 0x11d2, {0x8e, 0x4f, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
30 // Protocol GUID name defined in EFI1.1.
32 #define DISK_IO_PROTOCOL EFI_DISK_IO_PROTOCOL_GUID
34 typedef struct _EFI_DISK_IO_PROTOCOL EFI_DISK_IO_PROTOCOL
;
37 // Protocol defined in EFI1.1.
39 typedef EFI_DISK_IO_PROTOCOL EFI_DISK_IO
;
42 Read BufferSize bytes from Offset into Buffer.
44 @param This Protocol instance pointer.
45 @param MediaId Id of the media, changes every time the media is replaced.
46 @param Offset The starting byte offset to read from
47 @param BufferSize Size of Buffer
48 @param Buffer Buffer containing read data
50 @retval EFI_SUCCESS The data was read correctly from the device.
51 @retval EFI_DEVICE_ERROR The device reported an error while performing the read.
52 @retval EFI_NO_MEDIA There is no media in the device.
53 @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
54 @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
60 (EFIAPI
*EFI_DISK_READ
) (
61 IN EFI_DISK_IO_PROTOCOL
*This
,
70 Read BufferSize bytes from Offset into Buffer.
72 @param This Protocol instance pointer.
73 @param MediaId Id of the media, changes every time the media is replaced.
74 @param Offset The starting byte offset to read from
75 @param BufferSize Size of Buffer
76 @param Buffer Buffer containing read data
78 @retval EFI_SUCCESS The data was written correctly to the device.
79 @retval EFI_WRITE_PROTECTED The device can not be written to.
80 @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
81 @retval EFI_NO_MEDIA There is no media in the device.
82 @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
83 @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not
89 (EFIAPI
*EFI_DISK_WRITE
) (
90 IN EFI_DISK_IO_PROTOCOL
*This
,
98 #define EFI_DISK_IO_PROTOCOL_REVISION 0x00010000
101 // Revision defined in EFI1.1
103 #define EFI_DISK_IO_INTERFACE_REVISION EFI_DISK_IO_PROTOCOL_REVISION
105 struct _EFI_DISK_IO_PROTOCOL
{
107 EFI_DISK_READ ReadDisk
;
108 EFI_DISK_WRITE WriteDisk
;
111 extern EFI_GUID gEfiDiskIoProtocolGuid
;