#include "AtapiPeim.h"

Functions
EFI_STATUS EFIAPI	AtapiPeimEntry (IN EFI_PEI_FILE_HANDLE FileHandle, IN CONST EFI_PEI_SERVICES **PeiServices)

EFI_STATUS EFIAPI	AtapiGetNumberOfBlockDevices (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, OUT UINTN *NumberBlockDevices)

EFI_STATUS EFIAPI	AtapiGetBlockDeviceMediaInfo (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, IN UINTN DeviceIndex, OUT EFI_PEI_BLOCK_IO_MEDIA *MediaInfo)

EFI_STATUS EFIAPI	AtapiReadBlocks (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO_PPI This, IN UINTN DeviceIndex, IN EFI_PEI_LBA StartLBA, IN UINTN BufferSize, OUT VOID *Buffer)

EFI_STATUS EFIAPI	AtapiGetNumberOfBlockDevices2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, OUT UINTN *NumberBlockDevices)

EFI_STATUS EFIAPI	AtapiGetBlockDeviceMediaInfo2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, IN UINTN DeviceIndex, OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo)

EFI_STATUS EFIAPI	AtapiReadBlocks2 (IN EFI_PEI_SERVICES *PeiServices, IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI This, IN UINTN DeviceIndex, IN EFI_PEI_LBA StartLBA, IN UINTN BufferSize, OUT VOID *Buffer)

VOID	AtapiEnumerateDevices (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev)

BOOLEAN	DiscoverAtapiDevice (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, OUT EFI_PEI_BLOCK_IO_MEDIA MediaInfo, OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo2)

EFI_STATUS	CheckPowerMode (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINTN DevicePosition, IN UINT8 AtaCommand)

BOOLEAN	DetectIDEController (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINTN DevicePosition)

EFI_STATUS	WaitForBSYClear (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	DRDYReady (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	DRQClear (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	DRQClear2 (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	DRQReady (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	DRQReady2 (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN IDE_BASE_REGISTERS IdeIoRegisters, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	CheckErrorStatus (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINT16 StatusReg)

EFI_STATUS	ATAPIIdentify (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINTN DevicePosition)

EFI_STATUS	TestUnitReady (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINTN DevicePosition)

EFI_STATUS	AtapiPacketCommandIn (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, IN ATAPI_PACKET_COMMAND Packet, IN UINT16 *Buffer, IN UINT32 ByteCount, IN UINTN TimeoutInMilliSeconds)

EFI_STATUS	Inquiry (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, OUT EFI_PEI_BLOCK_IO_MEDIA MediaInfo, OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo2)

EFI_STATUS	DetectMedia (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, IN OUT EFI_PEI_BLOCK_IO_MEDIA MediaInfo, IN OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo2)

EFI_STATUS	ResetDevice (IN ATAPI_BLK_IO_DEV *AtapiBlkIoDev, IN UINTN DevicePosition, IN BOOLEAN Extensive)

EFI_STATUS	RequestSense (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, IN ATAPI_REQUEST_SENSE_DATA SenseBuffers, IN OUT UINT8 *SenseCounts)

EFI_STATUS	ReadCapacity (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, IN OUT EFI_PEI_BLOCK_IO_MEDIA MediaInfo, IN OUT EFI_PEI_BLOCK_IO2_MEDIA *MediaInfo2)

EFI_STATUS	ReadSectors (IN ATAPI_BLK_IO_DEV AtapiBlkIoDev, IN UINTN DevicePosition, IN VOID Buffer, IN EFI_PEI_LBA StartLba, IN UINTN NumberOfBlocks, IN UINTN BlockSize)

BOOLEAN	IsNoMedia (IN ATAPI_REQUEST_SENSE_DATA *SenseData, IN UINTN SenseCounts)

BOOLEAN	IsDeviceStateUnclear (IN ATAPI_REQUEST_SENSE_DATA *SenseData, IN UINTN SenseCounts)

BOOLEAN	IsMediaError (IN ATAPI_REQUEST_SENSE_DATA *SenseData, IN UINTN SenseCounts)

BOOLEAN	IsDriveReady (IN ATAPI_REQUEST_SENSE_DATA SenseData, IN UINTN SenseCounts, OUT BOOLEAN NeedRetry)

Detailed Description

PEIM to produce gEfiPeiVirtualBlockIoPpiGuid & gEfiPeiVirtualBlockIo2PpiGuid PPI for ATA controllers in the platform.

This PPI can be consumed by PEIM which produce gEfiPeiDeviceRecoveryModulePpiGuid for Atapi CD ROM device.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file AtapiPeim.c.

Function Documentation

◆ AtapiEnumerateDevices()

VOID AtapiEnumerateDevices ( IN ATAPI_BLK_IO_DEV * AtapiBlkIoDev )

Enumerate Atapi devices.

This function is used to enumerate Atatpi device in Ide channel.

Parameters

[in] AtapiBlkIoDev A pointer to atapi block IO device

Definition at line 515 of file AtapiPeim.c.

◆ AtapiGetBlockDeviceMediaInfo()

EFI_STATUS EFIAPI AtapiGetBlockDeviceMediaInfo	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		IN UINTN	DeviceIndex,
		OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo
	)

Gets a block device's media information.

This function will provide the caller with the specified block device's media information. If the media changes, calling this function will update the media information accordingly.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[out]	MediaInfo	The media information of the specified block media. The caller is responsible for the ownership of this data structure.

Return values

EFI_SUCCESS	Media information about the specified block device was obtained successfully.
EFI_DEVICE_ERROR	Cannot get the media information due to a hardware error.
Others	Other failure occurs.

Definition at line 158 of file AtapiPeim.c.

◆ AtapiGetBlockDeviceMediaInfo2()

EFI_STATUS EFIAPI AtapiGetBlockDeviceMediaInfo2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		IN UINTN	DeviceIndex,
		OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo
	)

Gets a block device's media information.

This function will provide the caller with the specified block device's media information. If the media changes, calling this function will update the media information accordingly.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[out]	MediaInfo	The media information of the specified block media. The caller is responsible for the ownership of this data structure.

Return values

EFI_SUCCESS	Media information about the specified block device was obtained successfully.
EFI_DEVICE_ERROR	Cannot get the media information due to a hardware error.
Others	Other failure occurs.

Definition at line 401 of file AtapiPeim.c.

◆ AtapiGetNumberOfBlockDevices()

EFI_STATUS EFIAPI AtapiGetNumberOfBlockDevices	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		OUT UINTN *	NumberBlockDevices
	)

Gets the count of block I/O devices that one specific block driver detects.

This function is used for getting the count of block I/O devices that one specific block driver detects. To the PEI ATAPI driver, it returns the number of all the detected ATAPI devices it detects during the enumeration process. To the PEI legacy floppy driver, it returns the number of all the legacy devices it finds during its enumeration process. If no device is detected, then the function will return zero.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[out]	NumberBlockDevices	The number of block I/O devices discovered.

Return values

EFI_SUCCESS Operation performed successfully.

Definition at line 111 of file AtapiPeim.c.

◆ AtapiGetNumberOfBlockDevices2()

EFI_STATUS EFIAPI AtapiGetNumberOfBlockDevices2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		OUT UINTN *	NumberBlockDevices
	)

Gets the count of block I/O devices that one specific block driver detects.

This function is used for getting the count of block I/O devices that one specific block driver detects. To the PEI ATAPI driver, it returns the number of all the detected ATAPI devices it detects during the enumeration process. To the PEI legacy floppy driver, it returns the number of all the legacy devices it finds during its enumeration process. If no device is detected, then the function will return zero.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[out]	NumberBlockDevices	The number of block I/O devices discovered.

Return values

EFI_SUCCESS Operation performed successfully.

Definition at line 351 of file AtapiPeim.c.

◆ ATAPIIdentify()

EFI_STATUS ATAPIIdentify	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition
	)

Idendify Atapi devices.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.

Return values

EFI_SUCCESS	Identify successfully.
EFI_DEVICE_ERROR	Device cannot be identified successfully.

Definition at line 1211 of file AtapiPeim.c.

◆ AtapiPacketCommandIn()

EFI_STATUS AtapiPacketCommandIn	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN ATAPI_PACKET_COMMAND *	Packet,
		IN UINT16 *	Buffer,
		IN UINT32	ByteCount,
		IN UINTN	TimeoutInMilliSeconds
	)

Send out ATAPI commands conforms to the Packet Command with PIO Data In Protocol.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in]	Packet	A pointer to ATAPI command packet.
[in]	Buffer	Buffer to contain requested transfer data from device.
[in]	ByteCount	Requested transfer data length.
[in]	TimeoutInMilliSeconds	Time out value, in unit of milliseconds.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Device cannot be executed command successfully.

Definition at line 1415 of file AtapiPeim.c.

◆ AtapiPeimEntry()

EFI_STATUS EFIAPI AtapiPeimEntry	(	IN EFI_PEI_FILE_HANDLE	FileHandle,
		IN CONST EFI_PEI_SERVICES **	PeiServices
	)

Initializes the Atapi Block Io PPI.

Parameters

[in]	FileHandle	Handle of the file being invoked.
[in]	PeiServices	Describes the list of possible PEI Services.

Return values

EFI_SUCCESS	Operation performed successfully.
EFI_OUT_OF_RESOURCES	Not enough memory to allocate.

Definition at line 28 of file AtapiPeim.c.

◆ AtapiReadBlocks()

EFI_STATUS EFIAPI AtapiReadBlocks	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO_PPI *	This,
		IN UINTN	DeviceIndex,
		IN EFI_PEI_LBA	StartLBA,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Reads the requested number of blocks from the specified block device.

The function reads the requested number of blocks from the device. All the blocks are read, or an error is returned. If there is no media in the device, the function returns EFI_NO_MEDIA.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[in]	StartLBA	The starting logical block address (LBA) to read from on the device
[in]	BufferSize	The size of the Buffer in bytes. This number must be a multiple of the intrinsic block size of the device.
[out]	Buffer	A pointer to the destination buffer for the data. The caller is responsible for the ownership of the buffer.

Return values

EFI_SUCCESS	The data was read correctly from the device.
EFI_DEVICE_ERROR	The device reported an error while attempting to perform the read operation.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not properly aligned.
EFI_NO_MEDIA	There is no media in the device.
EFI_BAD_BUFFER_SIZE	The BufferSize parameter is not a multiple of the intrinsic block size of the device.

Definition at line 258 of file AtapiPeim.c.

◆ AtapiReadBlocks2()

EFI_STATUS EFIAPI AtapiReadBlocks2	(	IN EFI_PEI_SERVICES **	PeiServices,
		IN EFI_PEI_RECOVERY_BLOCK_IO2_PPI *	This,
		IN UINTN	DeviceIndex,
		IN EFI_PEI_LBA	StartLBA,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Reads the requested number of blocks from the specified block device.

The function reads the requested number of blocks from the device. All the blocks are read, or an error is returned. If there is no media in the device, the function returns EFI_NO_MEDIA.

Parameters

[in]	PeiServices	General-purpose services that are available to every PEIM.
[in]	This	Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
[in]	DeviceIndex	Specifies the block device to which the function wants to talk. Because the driver that implements Block I/O PPIs will manage multiple block devices, the PPIs that want to talk to a single device must specify the device index that was assigned during the enumeration process. This index is a number from one to NumberBlockDevices.
[in]	StartLBA	The starting logical block address (LBA) to read from on the device
[in]	BufferSize	The size of the Buffer in bytes. This number must be a multiple of the intrinsic block size of the device.
[out]	Buffer	A pointer to the destination buffer for the data. The caller is responsible for the ownership of the buffer.

Return values

EFI_SUCCESS	The data was read correctly from the device.
EFI_DEVICE_ERROR	The device reported an error while attempting to perform the read operation.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not properly aligned.
EFI_NO_MEDIA	There is no media in the device.
EFI_BAD_BUFFER_SIZE	The BufferSize parameter is not a multiple of the intrinsic block size of the device.

Definition at line 474 of file AtapiPeim.c.

◆ CheckErrorStatus()

EFI_STATUS CheckErrorStatus	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINT16	StatusReg
	)

Check if there is an error in Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	StatusReg	The address to IDE IO registers.

Return values

EFI_SUCCESS	Operation success.
EFI_DEVICE_ERROR	Device error.

Definition at line 1184 of file AtapiPeim.c.

◆ CheckPowerMode()

EFI_STATUS CheckPowerMode	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN UINT8	AtaCommand
	)

Check power mode of Atapi devices.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in]	AtaCommand	The Ata Command passed in.

Return values

EFI_SUCCESS	The Atapi device support power mode.
EFI_NOT_FOUND	The Atapi device not found.
EFI_TIMEOUT	Atapi command transaction is time out.
EFI_ABORTED	Atapi command abort.

Definition at line 675 of file AtapiPeim.c.

◆ DetectIDEController()

BOOLEAN DetectIDEController	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition
	)

Detect if an IDE controller exists in specified position.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.

Return values

TRUE	The Atapi device exists.
FALSE	The Atapi device does not present.

Definition at line 806 of file AtapiPeim.c.

◆ DetectMedia()

EFI_STATUS DetectMedia	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo,
		IN OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo2
	)

Used before read/write blocks from/to ATAPI device media. Since ATAPI device media is removable, it is necessary to detect whether media is present and get current present media's information.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in,out]	MediaInfo	The media information of the specified block media.
[in,out]	MediaInfo2	The media information 2 of the specified block media.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Some device errors happen.
EFI_OUT_OF_RESOURCES	Can not allocate required resources.

Definition at line 1720 of file AtapiPeim.c.

◆ DiscoverAtapiDevice()

BOOLEAN DiscoverAtapiDevice	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo,
		OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo2
	)

Detect Atapi devices.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[out]	MediaInfo	The media information of the specified block media.
[out]	MediaInfo2	The media information 2 of the specified block media.

Return values

TRUE	Atapi device exists in specified position.
FALSE	Atapi device does not exist in specified position.

Definition at line 635 of file AtapiPeim.c.

◆ DRDYReady()

EFI_STATUS DRDYReady	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for DRDY bit set in the Status register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	DRDY bit is set in the specified time interval.
EFI_TIMEOUT	DRDY bit is not set in the specified time interval.

Definition at line 895 of file AtapiPeim.c.

◆ DRQClear()

EFI_STATUS DRQClear	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for DRQ bit clear in the Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	DRQ bit is cleared in the specified time interval.
EFI_TIMEOUT	DRQ bit is not cleared in the specified time interval.

Definition at line 951 of file AtapiPeim.c.

◆ DRQClear2()

EFI_STATUS DRQClear2	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for DRQ bit clear in the Alternate Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	DRQ bit is cleared in the specified time interval.
EFI_TIMEOUT	DRQ bit is not cleared in the specified time interval.

Definition at line 1008 of file AtapiPeim.c.

◆ DRQReady()

EFI_STATUS DRQReady	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for DRQ bit set in the Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	DRQ bit is set in the specified time interval.
EFI_TIMEOUT	DRQ bit is not set in the specified time interval.
EFI_ABORTED	Operation Aborted.

Definition at line 1066 of file AtapiPeim.c.

◆ DRQReady2()

EFI_STATUS DRQReady2	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for DRQ bit set in the Alternate Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	DRQ bit is set in the specified time interval.
EFI_TIMEOUT	DRQ bit is not set in the specified time interval.
EFI_ABORTED	Operation Aborted.

Definition at line 1128 of file AtapiPeim.c.

◆ Inquiry()

EFI_STATUS Inquiry	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo,
		OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo2
	)

Sends out ATAPI Inquiry Packet Command to the specified device. This command will return INQUIRY data of the device.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[out]	MediaInfo	The media information of the specified block media.
[out]	MediaInfo2	The media information 2 of the specified block media.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Device cannot be executed command successfully.
EFI_UNSUPPORTED	Unsupported device type.

Definition at line 1623 of file AtapiPeim.c.

◆ IsDeviceStateUnclear()

BOOLEAN IsDeviceStateUnclear	(	IN ATAPI_REQUEST_SENSE_DATA *	SenseData,
		IN UINTN	SenseCounts
	)

Check if device state is unclear according to sense data.

Parameters

[in]	SenseData	Pointer to sense data.
[in]	SenseCounts	Count of sense data.

Return values

TRUE	Device state is unclear
FALSE	Device state is clear

Definition at line 2315 of file AtapiPeim.c.

◆ IsDriveReady()

BOOLEAN IsDriveReady	(	IN ATAPI_REQUEST_SENSE_DATA *	SenseData,
		IN UINTN	SenseCounts,
		OUT BOOLEAN *	NeedRetry
	)

Check if drive is ready according to sense data.

Parameters

[in]	SenseData	Pointer to sense data.
[in]	SenseCounts	Count of sense data.
[out]	NeedRetry	Indicate if retry is needed.

Return values

TRUE	Drive ready
FALSE	Drive not ready

Definition at line 2428 of file AtapiPeim.c.

◆ IsMediaError()

BOOLEAN IsMediaError	(	IN ATAPI_REQUEST_SENSE_DATA *	SenseData,
		IN UINTN	SenseCounts
	)

Check if there is media error according to sense data.

Parameters

[in]	SenseData	Pointer to sense data.
[in]	SenseCounts	Count of sense data.

Return values

TRUE	Media error
FALSE	No media error

Definition at line 2355 of file AtapiPeim.c.

◆ IsNoMedia()

BOOLEAN IsNoMedia	(	IN ATAPI_REQUEST_SENSE_DATA *	SenseData,
		IN UINTN	SenseCounts
	)

Check if there is media according to sense data.

Parameters

[in]	SenseData	Pointer to sense data.
[in]	SenseCounts	Count of sense data.

Return values

TRUE	No media
FALSE	Media exists

Definition at line 2280 of file AtapiPeim.c.

◆ ReadCapacity()

EFI_STATUS ReadCapacity	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN OUT EFI_PEI_BLOCK_IO_MEDIA *	MediaInfo,
		IN OUT EFI_PEI_BLOCK_IO2_MEDIA *	MediaInfo2
	)

Sends out ATAPI Read Capacity Packet Command to the specified device. This command will return the information regarding the capacity of the media in the device.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in,out]	MediaInfo	The media information of the specified block media.
[in,out]	MediaInfo2	The media information 2 of the specified block media.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Some device errors happen.

Definition at line 2076 of file AtapiPeim.c.

◆ ReadSectors()

EFI_STATUS ReadSectors	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN VOID *	Buffer,
		IN EFI_PEI_LBA	StartLba,
		IN UINTN	NumberOfBlocks,
		IN UINTN	BlockSize
	)

Perform read from disk in block unit.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in]	Buffer	Buffer to contain read data.
[in]	StartLba	Starting LBA address.
[in]	NumberOfBlocks	Number of blocks to read.
[in]	BlockSize	Size of each block.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Some device errors happen.

Definition at line 2182 of file AtapiPeim.c.

◆ RequestSense()

EFI_STATUS RequestSense	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN ATAPI_REQUEST_SENSE_DATA *	SenseBuffers,
		IN OUT UINT8 *	SenseCounts
	)

Sends out ATAPI Request Sense Packet Command to the specified device.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in]	SenseBuffers	Pointer to sense buffer.
[in,out]	SenseCounts	Length of sense buffer.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Some device errors happen.

Definition at line 1979 of file AtapiPeim.c.

◆ ResetDevice()

EFI_STATUS ResetDevice	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition,
		IN BOOLEAN	Extensive
	)

Reset specified Atapi device.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.
[in]	Extensive	If TRUE, use ATA soft reset, otherwise use Atapi soft reset.

Return values

EFI_SUCCESS	Command executed successfully.
EFI_DEVICE_ERROR	Some device errors happen.

Definition at line 1882 of file AtapiPeim.c.

◆ TestUnitReady()

EFI_STATUS TestUnitReady	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN UINTN	DevicePosition
	)

Sends out ATAPI Test Unit Ready Packet Command to the specified device to find out whether device is accessible.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	DevicePosition	An integer to signify device position.

Return values

EFI_SUCCESS	TestUnit command executed successfully.
EFI_DEVICE_ERROR	Device cannot be executed TestUnit command successfully.

Definition at line 1379 of file AtapiPeim.c.

◆ WaitForBSYClear()

EFI_STATUS WaitForBSYClear	(	IN ATAPI_BLK_IO_DEV *	AtapiBlkIoDev,
		IN IDE_BASE_REGISTERS *	IdeIoRegisters,
		IN UINTN	TimeoutInMilliSeconds
	)

Wait specified time interval to poll for BSY bit clear in the Status Register.

Parameters

[in]	AtapiBlkIoDev	A pointer to atapi block IO device.
[in]	IdeIoRegisters	A pointer to IDE IO registers.
[in]	TimeoutInMilliSeconds	Time specified in milliseconds.

Return values

EFI_SUCCESS	BSY bit is cleared in the specified time interval.
EFI_TIMEOUT	BSY bit is not cleared in the specified time interval.

Definition at line 850 of file AtapiPeim.c.

Functions

Detailed Description

Function Documentation

◆ AtapiEnumerateDevices()

◆ AtapiGetBlockDeviceMediaInfo()

◆ AtapiGetBlockDeviceMediaInfo2()

◆ AtapiGetNumberOfBlockDevices()

◆ AtapiGetNumberOfBlockDevices2()

◆ ATAPIIdentify()

◆ AtapiPacketCommandIn()

◆ AtapiPeimEntry()

◆ AtapiReadBlocks()

◆ AtapiReadBlocks2()

◆ CheckErrorStatus()

◆ CheckPowerMode()

◆ DetectIDEController()

◆ DetectMedia()

◆ DiscoverAtapiDevice()

◆ DRDYReady()

◆ DRQClear()

◆ DRQClear2()

◆ DRQReady()

◆ DRQReady2()

◆ Inquiry()

◆ IsDeviceStateUnclear()

◆ IsDriveReady()

◆ IsMediaError()

◆ IsNoMedia()

◆ ReadCapacity()

◆ ReadSectors()

◆ RequestSense()

◆ ResetDevice()

◆ TestUnitReady()

◆ WaitForBSYClear()