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Diffstat (limited to 'EDK/Foundation/Efi/Protocol/DiskIO/DiskIo.h')
-rw-r--r-- | EDK/Foundation/Efi/Protocol/DiskIO/DiskIo.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/EDK/Foundation/Efi/Protocol/DiskIO/DiskIo.h b/EDK/Foundation/Efi/Protocol/DiskIO/DiskIo.h new file mode 100644 index 0000000..0fc9760 --- /dev/null +++ b/EDK/Foundation/Efi/Protocol/DiskIO/DiskIo.h @@ -0,0 +1,111 @@ +/*++ + +Copyright (c) 2004, 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. + +Module Name: + + DiskIo.h + +Abstract: + + Disk IO protocol as defined in the EFI 1.0 specification. + + The Disk IO protocol is used to convert block oriented devices into byte + oriented devices. The Disk IO protocol is intended to layer on top of the + Block IO protocol. + +--*/ + +#ifndef __DISK_IO_H__ +#define __DISK_IO_H__ + +#define EFI_DISK_IO_PROTOCOL_GUID \ + { \ + 0xce345171, 0xba0b, 0x11d2, 0x8e, 0x4f, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b \ + } + +EFI_FORWARD_DECLARATION (EFI_DISK_IO_PROTOCOL); + +typedef +EFI_STATUS +(EFIAPI *EFI_DISK_READ) ( + IN EFI_DISK_IO_PROTOCOL * This, + IN UINT32 MediaId, + IN UINT64 Offset, + IN UINTN BufferSize, + OUT VOID *Buffer + ) +/*++ + + Routine Description: + Read BufferSize bytes from Offset into Buffer. + + Arguments: + This - Protocol instance pointer. + MediaId - Id of the media, changes every time the media is replaced. + Offset - The starting byte offset to read from + BufferSize - Size of Buffer + Buffer - Buffer containing read data + + Returns: + EFI_SUCCESS - The data was read correctly from the device. + EFI_DEVICE_ERROR - The device reported an error while performing the read. + EFI_NO_MEDIA - There is no media in the device. + EFI_MEDIA_CHNAGED - The MediaId does not matched the current device. + EFI_INVALID_PARAMETER - The read request contains device addresses that are not + valid for the device. + +--*/ +; + +typedef +EFI_STATUS +(EFIAPI *EFI_DISK_WRITE) ( + IN EFI_DISK_IO_PROTOCOL * This, + IN UINT32 MediaId, + IN UINT64 Offset, + IN UINTN BufferSize, + IN VOID *Buffer + ) +/*++ + + Routine Description: + Read BufferSize bytes from Offset into Buffer. + + Arguments: + This - Protocol instance pointer. + MediaId - Id of the media, changes every time the media is replaced. + Offset - The starting byte offset to read from + BufferSize - Size of Buffer + Buffer - Buffer containing read data + + Returns: + EFI_SUCCESS - The data was written correctly to the device. + EFI_WRITE_PROTECTED - The device can not be written to. + EFI_DEVICE_ERROR - The device reported an error while performing the write. + EFI_NO_MEDIA - There is no media in the device. + EFI_MEDIA_CHNAGED - The MediaId does not matched the current device. + EFI_INVALID_PARAMETER - The write request contains device addresses that are not + valid for the device. + +--*/ +; + +#define EFI_DISK_IO_PROTOCOL_REVISION 0x00010000 + +typedef struct _EFI_DISK_IO_PROTOCOL { + UINT64 Revision; + EFI_DISK_READ ReadDisk; + EFI_DISK_WRITE WriteDisk; +} EFI_DISK_IO_PROTOCOL; + +extern EFI_GUID gEfiDiskIoProtocolGuid; + +#endif |