mirror of https://github.com/acidanthera/audk.git
112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
/*++
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Copyright (c) 2004, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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DiskIo.h
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Abstract:
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Disk IO protocol as defined in the EFI 1.0 specification.
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The Disk IO protocol is used to convert block oriented devices into byte
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oriented devices. The Disk IO protocol is intended to layer on top of the
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Block IO protocol.
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--*/
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#ifndef __DISK_IO_H__
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#define __DISK_IO_H__
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#define EFI_DISK_IO_PROTOCOL_GUID \
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{ \
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0xce345171, 0xba0b, 0x11d2, 0x8e, 0x4f, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b \
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}
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EFI_FORWARD_DECLARATION (EFI_DISK_IO_PROTOCOL);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DISK_READ) (
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IN EFI_DISK_IO_PROTOCOL * This,
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IN UINT32 MediaId,
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IN UINT64 Offset,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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)
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/*++
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Routine Description:
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Read BufferSize bytes from Offset into Buffer.
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Arguments:
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This - Protocol instance pointer.
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MediaId - Id of the media, changes every time the media is replaced.
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Offset - The starting byte offset to read from
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BufferSize - Size of Buffer
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Buffer - Buffer containing read data
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Returns:
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EFI_SUCCESS - The data was read correctly from the device.
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EFI_DEVICE_ERROR - The device reported an error while performing the read.
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EFI_NO_MEDIA - There is no media in the device.
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EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
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EFI_INVALID_PARAMETER - The read request contains device addresses that are not
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valid for the device.
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--*/
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;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DISK_WRITE) (
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IN EFI_DISK_IO_PROTOCOL * This,
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IN UINT32 MediaId,
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IN UINT64 Offset,
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IN UINTN BufferSize,
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IN VOID *Buffer
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)
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/*++
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Routine Description:
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Read BufferSize bytes from Offset into Buffer.
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Arguments:
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This - Protocol instance pointer.
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MediaId - Id of the media, changes every time the media is replaced.
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Offset - The starting byte offset to read from
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BufferSize - Size of Buffer
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Buffer - Buffer containing read data
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Returns:
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EFI_SUCCESS - The data was written correctly to the device.
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EFI_WRITE_PROTECTED - The device can not be written to.
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EFI_DEVICE_ERROR - The device reported an error while performing the write.
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EFI_NO_MEDIA - There is no media in the device.
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EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
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EFI_INVALID_PARAMETER - The write request contains device addresses that are not
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valid for the device.
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--*/
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;
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#define EFI_DISK_IO_PROTOCOL_REVISION 0x00010000
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typedef struct _EFI_DISK_IO_PROTOCOL {
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UINT64 Revision;
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EFI_DISK_READ ReadDisk;
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EFI_DISK_WRITE WriteDisk;
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} EFI_DISK_IO_PROTOCOL;
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extern EFI_GUID gEfiDiskIoProtocolGuid;
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#endif
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