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audk/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.h

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/** @file
Master header file for DiskIo driver. It includes the module private defininitions.
Copyright (c) 2006 - 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_IO_H_
#define _DISK_IO_H_
#include <Uefi.h>
#include <Protocol/BlockIo.h>
#include <Protocol/BlockIo2.h>
#include <Protocol/DiskIo2.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>
#define DISK_IO_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('d', 's', 'k', 'I')
typedef struct {
UINT32 Signature;
EFI_DISK_IO_PROTOCOL DiskIo;
EFI_DISK_IO2_PROTOCOL DiskIo2;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_BLOCK_IO2_PROTOCOL *BlockIo2;
UINT8 *SharedWorkingBuffer;
EFI_LOCK TaskQueueLock;
LIST_ENTRY TaskQueue;
} DISK_IO_PRIVATE_DATA;
#define DISK_IO_PRIVATE_DATA_FROM_DISK_IO(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo, DISK_IO_PRIVATE_DATA_SIGNATURE)
#define DISK_IO_PRIVATE_DATA_FROM_DISK_IO2(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo2, DISK_IO_PRIVATE_DATA_SIGNATURE)
#define DISK_IO2_TASK_SIGNATURE SIGNATURE_32 ('d', 'i', 'a', 't')
typedef struct {
UINT32 Signature;
LIST_ENTRY Link; /// < link to other task
EFI_LOCK SubtasksLock;
LIST_ENTRY Subtasks; /// < header of subtasks
EFI_DISK_IO2_TOKEN *Token;
DISK_IO_PRIVATE_DATA *Instance;
} DISK_IO2_TASK;
#define DISK_IO2_FLUSH_TASK_SIGNATURE SIGNATURE_32 ('d', 'i', 'f', 't')
typedef struct {
UINT32 Signature;
EFI_BLOCK_IO2_TOKEN BlockIo2Token;
EFI_DISK_IO2_TOKEN *Token;
} DISK_IO2_FLUSH_TASK;
#define DISK_IO_SUBTASK_SIGNATURE SIGNATURE_32 ('d', 'i', 's', 't')
typedef struct {
//
// UnderRun: Offset != 0, Length < BlockSize
// OverRun: Offset == 0, Length < BlockSize
// Middle: Offset is block aligned, Length is multiple of block size
//
UINT32 Signature;
LIST_ENTRY Link;
BOOLEAN Write;
UINT64 Lba;
UINT32 Offset;
UINTN Length;
UINT8 *WorkingBuffer; /// < NULL indicates using "Buffer" directly
UINT8 *Buffer;
BOOLEAN Blocking;
//
// Following fields are for DiskIo2
//
DISK_IO2_TASK *Task;
EFI_BLOCK_IO2_TOKEN BlockIo2Token;
} DISK_IO_SUBTASK;
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gDiskIoComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gDiskIoComponentName2;
//
// Prototypes
// Driver model protocol interface
//
/**
Test to see if this driver supports ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to test
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCESS This driver supports this device
@retval EFI_ALREADY_STARTED This driver is already running on this device
@retval other This driver does not support this device
**/
EFI_STATUS
EFIAPI
DiskIoDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Start this driver on ControllerHandle by opening a Block IO protocol and
installing a Disk IO protocol on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCESS This driver is added to ControllerHandle
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
@retval other This driver does not support this device
**/
EFI_STATUS
EFIAPI
DiskIoDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Stop this driver on ControllerHandle by removing Disk IO protocol and closing
the Block IO protocol on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to stop driver on
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
children is zero stop the entire bus driver.
@param ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCESS This driver is removed ControllerHandle
@retval other This driver was not removed from this device
**/
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
//
/**
Read BufferSize bytes from Offset into Buffer.
Reads may support reads that are not aligned on
sector boundaries. There are three cases:
UnderRun - The first byte is not on a sector boundary or the read request is
less than a sector in length.
Aligned - A read of N contiguous sectors.
OverRun - The last byte is not on a sector boundary.
@param This Protocol instance pointer.
@param MediaId Id of the media, changes every time the media is replaced.
@param Offset The starting byte offset to read from
@param BufferSize Size of Buffer
@param Buffer Buffer containing read data
@retval EFI_SUCCESS The data was read correctly from the device.
@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
@retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
valid for the device.
**/
EFI_STATUS
EFIAPI
DiskIoReadDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
OUT VOID *Buffer
);
/**
Writes BufferSize bytes from Buffer into Offset.
Writes may require a read modify write to support writes that are not
aligned on sector boundaries. There are three cases:
UnderRun - The first byte is not on a sector boundary or the write request
is less than a sector in length. Read modify write is required.
Aligned - A write of N contiguous sectors.
OverRun - The last byte is not on a sector boundary. Read modified write
required.
@param This Protocol instance pointer.
@param MediaId Id of the media, changes every time the media is replaced.
@param Offset The starting byte offset to read from
@param BufferSize Size of Buffer
@param Buffer Buffer containing read data
@retval EFI_SUCCESS The data was written correctly to the device.
@retval EFI_WRITE_PROTECTED The device can not be written to.
@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
@retval EFI_INVALID_PARAMETER The write request contains device addresses that are not
valid for the device.
**/
EFI_STATUS
EFIAPI
DiskIoWriteDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
IN VOID *Buffer
);
/**
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.
**/
EFI_STATUS
EFIAPI
DiskIo2Cancel (
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.
**/
EFI_STATUS
EFIAPI
DiskIo2ReadDiskEx (
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.
**/
EFI_STATUS
EFIAPI
DiskIo2WriteDiskEx (
IN EFI_DISK_IO2_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN 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 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_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
DiskIo2FlushDiskEx (
IN EFI_DISK_IO2_PROTOCOL *This,
IN OUT EFI_DISK_IO2_TOKEN *Token
);
//
// EFI Component Name Functions
//
/**
Retrieves a Unicode string that is the user readable name of the driver.
This function retrieves the user readable name of a driver in the form of a
Unicode string. If the driver specified by This has a user readable name in
the language specified by Language, then a pointer to the driver name is
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
by This does not support the language specified by Language,
then EFI_UNSUPPORTED is returned.
@param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param Language[in] A pointer to a Null-terminated ASCII string
array indicating the language. This is the
language of the driver name that the caller is
requesting, and it must match one of the
languages specified in SupportedLanguages. The
number of languages supported by a driver is up
to the driver writer. Language is specified
in RFC 4646 or ISO 639-2 language code format.
@param DriverName[out] A pointer to the Unicode string to return.
This Unicode string is the name of the
driver specified by This in the language
specified by Language.
@retval EFI_SUCCESS The Unicode string for the Driver specified by
This and the language specified by Language was
returned in DriverName.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER DriverName is NULL.
@retval EFI_UNSUPPORTED The driver specified by This does not support
the language specified by Language.
**/
EFI_STATUS
EFIAPI
DiskIoComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
);
/**
Retrieves a Unicode string that is the user readable name of the controller
that is being managed by a driver.
This function retrieves the user readable name of the controller specified by
ControllerHandle and ChildHandle in the form of a Unicode string. If the
driver specified by This has a user readable name in the language specified by
Language, then a pointer to the controller name is returned in ControllerName,
and EFI_SUCCESS is returned. If the driver specified by This is not currently
managing the controller specified by ControllerHandle and ChildHandle,
then EFI_UNSUPPORTED is returned. If the driver specified by This does not
support the language specified by Language, then EFI_UNSUPPORTED is returned.
@param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param ControllerHandle[in] The handle of a controller that the driver
specified by This is managing. This handle
specifies the controller whose name is to be
returned.
@param ChildHandle[in] The handle of the child controller to retrieve
the name of. This is an optional parameter that
may be NULL. It will be NULL for device
drivers. It will also be NULL for a bus drivers
that wish to retrieve the name of the bus
controller. It will not be NULL for a bus
driver that wishes to retrieve the name of a
child controller.
@param Language[in] A pointer to a Null-terminated ASCII string
array indicating the language. This is the
language of the driver name that the caller is
requesting, and it must match one of the
languages specified in SupportedLanguages. The
number of languages supported by a driver is up
to the driver writer. Language is specified in
RFC 4646 or ISO 639-2 language code format.
@param ControllerName[out] A pointer to the Unicode string to return.
This Unicode string is the name of the
controller specified by ControllerHandle and
ChildHandle in the language specified by
Language from the point of view of the driver
specified by This.
@retval EFI_SUCCESS The Unicode string for the user readable name in
the language specified by Language for the
driver specified by This was returned in
DriverName.
@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
EFI_HANDLE.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER ControllerName is NULL.
@retval EFI_UNSUPPORTED The driver specified by This is not currently
managing the controller specified by
ControllerHandle and ChildHandle.
@retval EFI_UNSUPPORTED The driver specified by This does not support
the language specified by Language.
**/
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
);
#endif
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