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author | Guo Mang <mang.guo@intel.com> | 2016-12-22 15:57:14 +0800 |
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committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:14:41 +0800 |
commit | 1760cf81e4b1847c6823ea3514a78dd120e19b6e (patch) | |
tree | 64a874b14050fe24d3bbc1bc13cd293abf8ae018 /Core/MdePkg/Include/Protocol/DiskIo2.h | |
parent | 7f05fa00f73038b425002566d3afe6c3ade2ccdb (diff) | |
download | edk2-platforms-1760cf81e4b1847c6823ea3514a78dd120e19b6e.tar.xz |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Include/Protocol/DiskIo2.h')
-rw-r--r-- | Core/MdePkg/Include/Protocol/DiskIo2.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/Core/MdePkg/Include/Protocol/DiskIo2.h b/Core/MdePkg/Include/Protocol/DiskIo2.h new file mode 100644 index 0000000000..6e0665b1dc --- /dev/null +++ b/Core/MdePkg/Include/Protocol/DiskIo2.h @@ -0,0 +1,172 @@ +/** @file
+ Disk I/O 2 protocol as defined in the UEFI 2.4 specification.
+
+ The Disk I/O 2 protocol defines an extension to the Disk I/O protocol to enable
+ non-blocking / asynchronous byte-oriented disk operation.
+
+ Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+ 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.
+
+**/
+
+#ifndef __DISK_IO2_H__
+#define __DISK_IO2_H__
+
+#define EFI_DISK_IO2_PROTOCOL_GUID \
+ { \
+ 0x151c8eae, 0x7f2c, 0x472c, 0x9e, 0x54, 0x98, 0x28, 0x19, 0x4f, 0x6a, 0x88 \
+ }
+
+typedef struct _EFI_DISK_IO2_PROTOCOL EFI_DISK_IO2_PROTOCOL;
+
+/**
+ The struct of Disk IO2 Token.
+**/
+typedef struct {
+ //
+ // If Event is NULL, then blocking I/O is performed.
+ // If Event is not NULL and non-blocking I/O is supported, then non-blocking I/O is performed,
+ // and Event will be signaled when the I/O request is completed.
+ // The caller must be prepared to handle the case where the callback associated with Event occurs
+ // before the original asynchronous I/O request call returns.
+ //
+ EFI_EVENT Event;
+
+ //
+ // Defines whether or not the signaled event encountered an error.
+ //
+ EFI_STATUS TransactionStatus;
+} EFI_DISK_IO2_TOKEN;
+
+/**
+ Terminate outstanding asynchronous requests to a device.
+
+ @param This Indicates a pointer to the calling context.
+
+ @retval EFI_SUCCESS All outstanding requests were successfully terminated.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the cancel
+ operation.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DISK_CANCEL_EX) (
+ IN EFI_DISK_IO2_PROTOCOL *This
+ );
+
+/**
+ Reads a specified number of bytes from a device.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId ID of the medium to be read.
+ @param Offset The starting byte offset on the logical block I/O device to read from.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.
+ @param Buffer A pointer to the destination buffer for the data.
+ The caller is responsible either having implicit or explicit ownership of the buffer.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read correctly from the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.
+ @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not valid for the device.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DISK_READ_EX) (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN OUT EFI_DISK_IO2_TOKEN *Token,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ );
+
+/**
+ Writes a specified number of bytes to a device.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId ID of the medium to be written.
+ @param Offset The starting byte offset on the logical block I/O device to write to.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.
+ @param Buffer A pointer to the buffer containing the data to be written.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was written correctly to the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.
+ @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not valid for the device.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DISK_WRITE_EX) (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN OUT EFI_DISK_IO2_TOKEN *Token,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ );
+
+/**
+ Flushes all modified data to the physical device.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId ID of the medium to be written.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was flushed successfully to the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DISK_FLUSH_EX) (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN OUT EFI_DISK_IO2_TOKEN *Token
+ );
+
+#define EFI_DISK_IO2_PROTOCOL_REVISION 0x00020000
+
+///
+/// This protocol is used to abstract Block I/O interfaces.
+///
+struct _EFI_DISK_IO2_PROTOCOL {
+ ///
+ /// The revision to which the disk I/O interface adheres. All future
+ /// revisions must be backwards compatible. If a future version is not
+ /// backwards compatible, it is not the same GUID.
+ ///
+ UINT64 Revision;
+ EFI_DISK_CANCEL_EX Cancel;
+ EFI_DISK_READ_EX ReadDiskEx;
+ EFI_DISK_WRITE_EX WriteDiskEx;
+ EFI_DISK_FLUSH_EX FlushDiskEx;
+};
+
+extern EFI_GUID gEfiDiskIo2ProtocolGuid;
+
+#endif
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