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d1f95000 | 1 | /** @file\r |
8a7d75b0 | 2 | Disk IO protocol as defined in the UEFI 2.0 specification.\r |
d1f95000 | 3 | \r |
4 | The Disk IO protocol is used to convert block oriented devices into byte\r | |
5 | oriented devices. The Disk IO protocol is intended to layer on top of the\r | |
6 | Block IO protocol.\r | |
7 | \r | |
4ca9b6c4 | 8 | Copyright (c) 2006 - 2008, Intel Corporation \r |
d1f95000 | 9 | All rights reserved. This program and the accompanying materials \r |
10 | are licensed and made available under the terms and conditions of the BSD License \r | |
11 | which accompanies this distribution. The full text of the license may be found at \r | |
12 | http://opensource.org/licenses/bsd-license.php \r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
16 | \r | |
d1f95000 | 17 | **/\r |
18 | \r | |
19 | #ifndef __DISK_IO_H__\r | |
20 | #define __DISK_IO_H__\r | |
21 | \r | |
22 | #define EFI_DISK_IO_PROTOCOL_GUID \\r | |
23 | { \\r | |
24 | 0xce345171, 0xba0b, 0x11d2, {0x8e, 0x4f, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \\r | |
25 | }\r | |
26 | \r | |
99e8ed21 | 27 | ///\r |
28 | /// Protocol GUID name defined in EFI1.1.\r | |
29 | /// \r | |
a6508c05 | 30 | #define DISK_IO_PROTOCOL EFI_DISK_IO_PROTOCOL_GUID\r |
31 | \r | |
d1f95000 | 32 | typedef struct _EFI_DISK_IO_PROTOCOL EFI_DISK_IO_PROTOCOL;\r |
33 | \r | |
99e8ed21 | 34 | ///\r |
35 | /// Protocol defined in EFI1.1.\r | |
36 | /// \r | |
a6508c05 | 37 | typedef EFI_DISK_IO_PROTOCOL EFI_DISK_IO;\r |
38 | \r | |
d1f95000 | 39 | /**\r |
40 | Read BufferSize bytes from Offset into Buffer.\r | |
41 | \r | |
42 | @param This Protocol instance pointer.\r | |
43 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
44 | @param Offset The starting byte offset to read from\r | |
45 | @param BufferSize Size of Buffer\r | |
46 | @param Buffer Buffer containing read data\r | |
47 | \r | |
48 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
49 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
50 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
51 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
52 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r | |
53 | valid for the device.\r | |
54 | \r | |
55 | **/\r | |
56 | typedef\r | |
57 | EFI_STATUS\r | |
8b13229b | 58 | (EFIAPI *EFI_DISK_READ)(\r |
d1f95000 | 59 | IN EFI_DISK_IO_PROTOCOL *This,\r |
60 | IN UINT32 MediaId,\r | |
61 | IN UINT64 Offset,\r | |
62 | IN UINTN BufferSize,\r | |
63 | OUT VOID *Buffer\r | |
ed66e1bc | 64 | );\r |
d1f95000 | 65 | \r |
66 | /**\r | |
74fec708 | 67 | Writes a specified number of bytes to a device.\r |
d1f95000 | 68 | \r |
74fec708 LG |
69 | @param This Indicates a pointer to the calling context.\r |
70 | @param MediaId ID of the medium to be written.\r | |
71 | @param Offset The starting byte offset on the logical block I/O device to write.\r | |
72 | @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.\r | |
73 | @param Buffer A pointer to the buffer containing the data to be written.\r | |
d1f95000 | 74 | \r |
75 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
76 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
77 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
78 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
79 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
80 | @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not\r | |
81 | valid for the device.\r | |
82 | \r | |
83 | **/\r | |
84 | typedef\r | |
85 | EFI_STATUS\r | |
8b13229b | 86 | (EFIAPI *EFI_DISK_WRITE)(\r |
d1f95000 | 87 | IN EFI_DISK_IO_PROTOCOL *This,\r |
88 | IN UINT32 MediaId,\r | |
89 | IN UINT64 Offset,\r | |
90 | IN UINTN BufferSize,\r | |
91 | IN VOID *Buffer\r | |
ed66e1bc | 92 | );\r |
d1f95000 | 93 | \r |
94 | #define EFI_DISK_IO_PROTOCOL_REVISION 0x00010000\r | |
95 | \r | |
99e8ed21 | 96 | ///\r |
97 | /// Revision defined in EFI1.1\r | |
98 | /// \r | |
a6508c05 | 99 | #define EFI_DISK_IO_INTERFACE_REVISION EFI_DISK_IO_PROTOCOL_REVISION\r |
100 | \r | |
44717a39 | 101 | ///\r |
102 | /// This protocol is used to abstract Block I/O interfaces.\r | |
103 | ///\r | |
d1f95000 | 104 | struct _EFI_DISK_IO_PROTOCOL {\r |
3354353d | 105 | ///\r |
106 | /// The revision to which the disk I/O interface adheres. All future\r | |
107 | /// revisions must be backwards compatible. If a future version is not\r | |
108 | /// backwards compatible, it is not the same GUID.\r | |
109 | ///\r | |
d1f95000 | 110 | UINT64 Revision;\r |
111 | EFI_DISK_READ ReadDisk;\r | |
112 | EFI_DISK_WRITE WriteDisk;\r | |
113 | };\r | |
114 | \r | |
115 | extern EFI_GUID gEfiDiskIoProtocolGuid;\r | |
116 | \r | |
117 | #endif\r |