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/** @file
DiskIo driver that layers it's self on every Block IO protocol in the system.
DiskIo converts a block oriented device to a byte oriented device.
Copyright (c) 2006 - 2007, 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.
**/
#include <Uefi.h>
#include <Protocol/BlockIo.h>
#include <Protocol/ComponentName.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/DiskIo.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
//
// Driver Binding Externs
//
extern EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName;
#define DISK_IO_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('d', 's', 'k', 'I')
#define DATA_BUFFER_BLOCK_NUM (64)
typedef struct {
UINTN Signature;
EFI_DISK_IO_PROTOCOL DiskIo;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
} DISK_IO_PRIVATE_DATA;
#define DISK_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo, DISK_IO_PRIVATE_DATA_SIGNATURE)
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName;
//
// Prototypes
// Driver model protocol interface
//
EFI_STATUS
EFIAPI
DiskIoDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
DiskIoDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
DiskIoDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
//
// Disk I/O Protocol Interface
//
EFI_STATUS
EFIAPI
DiskIoReadDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
OUT VOID *Buffer
);
EFI_STATUS
EFIAPI
DiskIoWriteDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
IN VOID *Buffer
);
//
// EFI Component Name Functions
//
EFI_STATUS
EFIAPI
DiskIoComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
);
EFI_STATUS
EFIAPI
DiskIoComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
);
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