UefiScsiLib.h File Reference

Functions
EFI_STATUS EFIAPI	ScsiTestUnitReadyCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus)
EFI_STATUS EFIAPI	ScsiInquiryCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *InquiryDataBuffer, IN OUT UINT32 *InquiryDataLength, IN BOOLEAN EnableVitalProductData)
EFI_STATUS EFIAPI	ScsiInquiryCommandEx (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *InquiryDataBuffer, IN OUT UINT32 *InquiryDataLength, IN BOOLEAN EnableVitalProductData, IN UINT8 PageCode)
EFI_STATUS EFIAPI	ScsiModeSense10Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT8 DBDField, IN UINT8 PageControl, IN UINT8 PageCode)
EFI_STATUS EFIAPI	ScsiRequestSenseCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus)
EFI_STATUS EFIAPI	ScsiReadCapacityCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN BOOLEAN Pmi)
EFI_STATUS EFIAPI	ScsiReadCapacity16Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN BOOLEAN Pmi)
EFI_STATUS EFIAPI	ScsiRead10Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT32 StartLba, IN UINT32 SectorSize)
EFI_STATUS EFIAPI	ScsiWrite10Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT32 StartLba, IN UINT32 SectorSize)
EFI_STATUS EFIAPI	ScsiRead16Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT64 StartLba, IN UINT32 SectorSize)
EFI_STATUS EFIAPI	ScsiWrite16Command (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT64 StartLba, IN UINT32 SectorSize)
EFI_STATUS EFIAPI	ScsiSecurityProtocolInCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN UINT8 SecurityProtocol, IN UINT16 SecurityProtocolSpecific, IN BOOLEAN Inc512, IN UINTN DataLength, IN OUT VOID *DataBuffer, OUT UINTN *TransferLength)
EFI_STATUS EFIAPI	ScsiSecurityProtocolOutCommand (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN UINT8 SecurityProtocol, IN UINT16 SecurityProtocolSpecific, IN BOOLEAN Inc512, IN UINTN DataLength, IN OUT VOID *DataBuffer)
EFI_STATUS EFIAPI	ScsiRead10CommandEx (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT32 StartLba, IN UINT32 SectorSize, IN EFI_EVENT Event)
EFI_STATUS EFIAPI	ScsiWrite10CommandEx (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT32 StartLba, IN UINT32 SectorSize, IN EFI_EVENT Event)
EFI_STATUS EFIAPI	ScsiRead16CommandEx (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT64 StartLba, IN UINT32 SectorSize, IN EFI_EVENT Event)
EFI_STATUS EFIAPI	ScsiWrite16CommandEx (IN EFI_SCSI_IO_PROTOCOL *ScsiIo, IN UINT64 Timeout, IN OUT VOID *SenseData, IN OUT UINT8 *SenseDataLength, OUT UINT8 *HostAdapterStatus, OUT UINT8 *TargetStatus, IN OUT VOID *DataBuffer, IN OUT UINT32 *DataLength, IN UINT64 StartLba, IN UINT32 SectorSize, IN EFI_EVENT Event)

Detailed Description

Provides the functions to submit Scsi commands defined in SCSI-2 specification for SCSI devices.

This library class provides the functions to submit SCSI commands defined in SCSI-2 specification for hard drive, CD and DVD devices that are the most common SCSI boot targets used by UEFI platforms. This library class depends on SCSI I/O Protocol defined in UEFI Specification and SCSI-2 industry standard.

Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Function Documentation

EFI_STATUS EFIAPI ScsiInquiryCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	InquiryDataBuffer,
		IN OUT UINT32 *	InquiryDataLength,
		IN BOOLEAN	EnableVitalProductData
	)

Execute Inquiry SCSI command on a specific SCSI target.

Executes the Inquiry command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If InquiryDataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If InquiryDataLength is non-zero and InquiryDataBuffer is not NULL, InquiryDataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to the SCSI I/O Protocol instance for the specific SCSI target.
[in]	Timeout	The timeout in 100 ns units to use for the execution of this SCSI Request Packet. A Timeout value of zero means that this function will wait indefinitely for the SCSI Request Packet to execute. If Timeout is greater than zero, then this function will return EFI_TIMEOUT if the time required to execute the SCSI Request Packet is greater than Timeout.
[in,out]	SenseData	A pointer to sense data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If SenseDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	SenseDataLength	On input, the length in bytes of the SenseData buffer. On output, the number of bytes written to the SenseData buffer.
[out]	HostAdapterStatus	The status of the SCSI Host Controller that produces the SCSI bus containing the SCSI target specified by ScsiIo when the SCSI Request Packet was executed. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[out]	TargetStatus	The status returned by the SCSI target specified by ScsiIo when the SCSI Request Packet was executed on the SCSI Host Controller. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[in,out]	InquiryDataBuffer	A pointer to inquiry data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If InquiryDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	InquiryDataLength	On input, a pointer to the length in bytes of the InquiryDataBuffer buffer. On output, a pointer to the number of bytes written to the InquiryDataBuffer buffer.
[in]	EnableVitalProductData	If TRUE, then the supported vital product data is returned in InquiryDataBuffer. If FALSE, then the standard inquiry data is returned in InquiryDataBuffer.

Return values

EFI_SUCCESS	The command was executed successfully. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire InquiryDataBuffer could not be transferred. The actual number of bytes transferred is returned in InquiryDataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued. The SCSI Request Packet was not sent, so no additional status information is available. The caller may retry again later.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller). The SCSI Request Packet was not sent, so no additional status information is available.
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiInquiryCommandEx	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	InquiryDataBuffer,
		IN OUT UINT32 *	InquiryDataLength,
		IN BOOLEAN	EnableVitalProductData,
		IN UINT8	PageCode
	)

Execute Inquiry SCSI command on a specific SCSI target.

Executes the Inquiry command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If InquiryDataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If InquiryDataLength is non-zero and InquiryDataBuffer is not NULL, InquiryDataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to the SCSI I/O Protocol instance for the specific SCSI target.
[in]	Timeout	The timeout in 100 ns units to use for the execution of this SCSI Request Packet. A Timeout value of zero means that this function will wait indefinitely for the SCSI Request Packet to execute. If Timeout is greater than zero, then this function will return EFI_TIMEOUT if the time required to execute the SCSI Request Packet is greater than Timeout.
[in,out]	SenseData	A pointer to sense data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If SenseDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	SenseDataLength	On input, the length in bytes of the SenseData buffer. On output, the number of bytes written to the SenseData buffer.
[out]	HostAdapterStatus	The status of the SCSI Host Controller that produces the SCSI bus containing the SCSI target specified by ScsiIo when the SCSI Request Packet was executed. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[out]	TargetStatus	The status returned by the SCSI target specified by ScsiIo when the SCSI Request Packet was executed on the SCSI Host Controller. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[in,out]	InquiryDataBuffer	A pointer to inquiry data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If InquiryDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	InquiryDataLength	On input, a pointer to the length in bytes of the InquiryDataBuffer buffer. On output, a pointer to the number of bytes written to the InquiryDataBuffer buffer.
[in]	EnableVitalProductData	If TRUE, then the supported vital product data for the PageCode is returned in InquiryDataBuffer. If FALSE, then the standard inquiry data is returned in InquiryDataBuffer and PageCode is ignored.
[in]	PageCode	The page code of the vital product data. It's ignored if EnableVitalProductData is FALSE.

Return values

EFI_SUCCESS	The command executed successfully. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire InquiryDataBuffer could not be transferred. The actual number of bytes transferred is returned in InquiryDataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued. The SCSI Request Packet was not sent, so no additional status information is available. The caller may retry again later.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller). The SCSI Request Packet was not sent, so no additional status information is available.
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiModeSense10Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT8	DBDField,
		IN UINT8	PageControl,
		IN UINT8	PageCode
	)

Execute Mode Sense(10) SCSI command on a specific SCSI target.

Executes the SCSI Mode Sense(10) command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The DBDField, PageControl, and PageCode parameters are used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to the SCSI I/O Protocol instance for the specific SCSI target.
[in]	Timeout	The timeout in 100 ns units to use for the execution of this SCSI Request Packet. A Timeout value of zero means that this function will wait indefinitely for the SCSI Request Packet to execute. If Timeout is greater than zero, then this function will return EFI_TIMEOUT if the time required to execute the SCSI Request Packet is greater than Timeout.
[in,out]	SenseData	A pointer to sense data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If SenseDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	SenseDataLength	On input, the length in bytes of the SenseData buffer. On output, the number of bytes written to the SenseData buffer.
[out]	HostAdapterStatus	The status of the SCSI Host Controller that produces the SCSI bus containing the SCSI target specified by ScsiIo when the SCSI Request Packet was executed. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[out]	TargetStatus	The status returned by the SCSI target specified by ScsiIo when the SCSI Request Packet was executed on the SCSI Host Controller. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[in,out]	DataBuffer	A pointer to data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If DataLength is 0, then this parameter is optional and may be NULL.
[in,out]	DataLength	On input, a pointer to the length in bytes of the DataBuffer buffer. On output, a pointer to the number of bytes written to the DataBuffer buffer.
[in]	DBDField	Specifies the DBD field of the CDB for this SCSI Command.
[in]	PageControl	Specifies the PC field of the CDB for this SCSI Command.
[in]	PageCode	Specifies the Page Control field of the CDB for this SCSI Command.

Return values

EFI_SUCCESS	The command was executed successfully. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued. The SCSI Request Packet was not sent, so no additional status information is available. The caller may retry again later.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller). The SCSI Request Packet was not sent, so no additional status information is available.
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiRead10Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT32	StartLba,
		IN UINT32	SectorSize
	)

Execute Read(10) SCSI command on a specific SCSI target.

Executes the SCSI Read(10) command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	Read 10 command data.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiRead10CommandEx	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT32	StartLba,
		IN UINT32	SectorSize,
		IN EFI_EVENT	Event
	)

Execute blocking/non-blocking Read(10) SCSI command on a specific SCSI target.

Executes the SCSI Read(10) command on the SCSI target specified by ScsiIo. When Event is NULL, blocking command will be executed. Otherwise non-blocking command will be executed. For blocking I/O, if Timeout is zero, this function will wait indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. For non-blocking I/O, if Timeout is zero, Event will be signaled only after the command to completes. If Timeout is greater than zero, Event will also be signaled after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command.

If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	Read 16 command data.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.
[in]	Event	If the SCSI target does not support non-blocking I/O, then Event is ignored, and blocking I/O is performed. 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 SCSI Read(10) command completes.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.

EFI_STATUS EFIAPI ScsiRead16Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT64	StartLba,
		IN UINT32	SectorSize
	)

Execute Read(16) SCSI command on a specific SCSI target.

Executes the SCSI Read(16) command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	Read 16 command data.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiRead16CommandEx	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT64	StartLba,
		IN UINT32	SectorSize,
		IN EFI_EVENT	Event
	)

Execute blocking/non-blocking Read(16) SCSI command on a specific SCSI target.

Executes the SCSI Read(16) command on the SCSI target specified by ScsiIo. When Event is NULL, blocking command will be executed. Otherwise non-blocking command will be executed. For blocking I/O, if Timeout is zero, this function will wait indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. For non-blocking I/O, if Timeout is zero, Event will be signaled only after the command to completes. If Timeout is greater than zero, Event will also be signaled after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command.

If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	Read 16 command data.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.
[in]	Event	If the SCSI target does not support non-blocking I/O, then Event is ignored, and blocking I/O is performed. 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 SCSI Read(16) command completes.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.

EFI_STATUS EFIAPI ScsiReadCapacity16Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN BOOLEAN	Pmi
	)

Execute Read Capacity SCSI 16 command on a specific SCSI target.

Executes the SCSI Read Capacity 16 command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The Pmi parameter is used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	Pmi	Partial medium indicator.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiReadCapacityCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN BOOLEAN	Pmi
	)

Execute Read Capacity SCSI command on a specific SCSI target.

Executes the SCSI Read Capacity command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The Pmi parameter is used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	Pmi	Partial medium indicator.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiRequestSenseCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus
	)

Execute Request Sense SCSI command on a specific SCSI target.

Executes the Request Sense command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to SCSI IO protocol.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiSecurityProtocolInCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN UINT8	SecurityProtocol,
		IN UINT16	SecurityProtocolSpecific,
		IN BOOLEAN	Inc512,
		IN UINTN	DataLength,
		IN OUT VOID *	DataBuffer,
		OUT UINTN *	TransferLength
	)

Execute Security Protocol In SCSI command on a specific SCSI target.

Executes the SCSI Security Protocol In command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If TransferLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in]	SecurityProtocol	The Security Protocol to use.
[in]	SecurityProtocolSpecific	The Security Protocol Specific data.
[in]	Inc512	If TRUE, 512 increment (INC_512) bit will be set for the SECURITY PROTOCOL IN command.
[in]	DataLength	The size in bytes of the data buffer.
[in,out]	DataBuffer	A pointer to a data buffer.
[out]	TransferLength	A pointer to a buffer to store the size in bytes of the data written to the data buffer.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in TransferLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiSecurityProtocolOutCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN UINT8	SecurityProtocol,
		IN UINT16	SecurityProtocolSpecific,
		IN BOOLEAN	Inc512,
		IN UINTN	DataLength,
		IN OUT VOID *	DataBuffer
	)

Execute Security Protocol Out SCSI command on a specific SCSI target.

Executes the SCSI Security Protocol Out command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use.
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in]	SecurityProtocol	The Security Protocol to use.
[in]	SecurityProtocolSpecific	The Security Protocol Specific data.
[in]	Inc512	If TRUE, 512 increment (INC_512) bit will be set for the SECURITY PROTOCOL OUT command.
[in]	DataLength	The size in bytes of the transfer data.
[in,out]	DataBuffer	A pointer to a data buffer.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiTestUnitReadyCommand	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus
	)

Execute Test Unit Ready SCSI command on a specific SCSI target.

Executes the Test Unit Ready command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	A pointer to the SCSI I/O Protocol instance for the specific SCSI target.
[in]	Timeout	The timeout in 100 ns units to use for the execution of this SCSI Request Packet. A Timeout value of zero means that this function will wait indefinitely for the SCSI Request Packet to execute. If Timeout is greater than zero, then this function will return EFI_TIMEOUT if the time required to execute the SCSI Request Packet is greater than Timeout.
[in,out]	SenseData	A pointer to sense data that was generated by the execution of the SCSI Request Packet. This buffer must be allocated by the caller. If SenseDataLength is 0, then this parameter is optional and may be NULL.
[in,out]	SenseDataLength	On input, a pointer to the length in bytes of the SenseData buffer. On output, a pointer to the number of bytes written to the SenseData buffer.
[out]	HostAdapterStatus	The status of the SCSI Host Controller that produces the SCSI bus containing the SCSI target specified by ScsiIo when the SCSI Request Packet was executed. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.
[out]	TargetStatus	The status returned by the SCSI target specified by ScsiIo when the SCSI Request Packet was executed on the SCSI Host Controller. See the EFI SCSI I/O Protocol in the UEFI Specification for details on the possible return values.

Return values

EFI_SUCCESS	The command was executed successfully. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued. The SCSI Request Packet was not sent, so no additional status information is available. The caller may retry again later.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller). The SCSI Request Packet was not sent, so no additional status information is available.
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute. See HostAdapterStatus, TargetStatus, SenseDataLength, and SenseData in that order for additional status information.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiWrite10Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT32	StartLba,
		IN UINT32	SectorSize
	)

Execute Write(10) SCSI command on a specific SCSI target.

Executes the SCSI Write(10) command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiWrite10CommandEx	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT32	StartLba,
		IN UINT32	SectorSize,
		IN EFI_EVENT	Event
	)

Execute blocking/non-blocking Write(10) SCSI command on a specific SCSI target.

Executes the SCSI Write(10) command on the SCSI target specified by ScsiIo. When Event is NULL, blocking command will be executed. Otherwise non-blocking command will be executed. For blocking I/O, if Timeout is zero, this function will wait indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. For non-blocking I/O, if Timeout is zero, Event will be signaled only after the command to completes. If Timeout is greater than zero, Event will also be signaled after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command.

If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.
[in]	Event	If the SCSI target does not support non-blocking I/O, then Event is ignored, and blocking I/O is performed. 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 SCSI Write(10) command completes.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.

EFI_STATUS EFIAPI ScsiWrite16Command	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT64	StartLba,
		IN UINT32	SectorSize
	)

Execute Write(16) SCSI command on a specific SCSI target.

Executes the SCSI Write(16) command on the SCSI target specified by ScsiIo. If Timeout is zero, then this function waits indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command. If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.

EFI_STATUS EFIAPI ScsiWrite16CommandEx	(	IN EFI_SCSI_IO_PROTOCOL *	ScsiIo,
		IN UINT64	Timeout,
		IN OUT VOID *	SenseData,
		IN OUT UINT8 *	SenseDataLength,
		OUT UINT8 *	HostAdapterStatus,
		OUT UINT8 *	TargetStatus,
		IN OUT VOID *	DataBuffer,
		IN OUT UINT32 *	DataLength,
		IN UINT64	StartLba,
		IN UINT32	SectorSize,
		IN EFI_EVENT	Event
	)

Execute blocking/non-blocking Write(16) SCSI command on a specific SCSI target.

Executes the SCSI Write(16) command on the SCSI target specified by ScsiIo. When Event is NULL, blocking command will be executed. Otherwise non-blocking command will be executed. For blocking I/O, if Timeout is zero, this function will wait indefinitely for the command to complete. If Timeout is greater than zero, then the command is executed and will timeout after Timeout 100 ns units. For non-blocking I/O, if Timeout is zero, Event will be signaled only after the command to completes. If Timeout is greater than zero, Event will also be signaled after Timeout 100 ns units. The StartLba and SectorSize parameters are used to construct the CDB for this SCSI command.

If ScsiIo is NULL, then ASSERT(). If SenseDataLength is NULL, then ASSERT(). If HostAdapterStatus is NULL, then ASSERT(). If TargetStatus is NULL, then ASSERT(). If DataLength is NULL, then ASSERT().

If SenseDataLength is non-zero and SenseData is not NULL, SenseData must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

If DataLength is non-zero and DataBuffer is not NULL, DataBuffer must meet buffer alignment requirement defined in EFI_SCSI_IO_PROTOCOL. Otherwise EFI_INVALID_PARAMETER gets returned.

Parameters

[in]	ScsiIo	SCSI IO Protocol to use
[in]	Timeout	The length of timeout period.
[in,out]	SenseData	A pointer to output sense data.
[in,out]	SenseDataLength	The length of output sense data.
[out]	HostAdapterStatus	The status of Host Adapter.
[out]	TargetStatus	The status of the target.
[in,out]	DataBuffer	A pointer to a data buffer.
[in,out]	DataLength	The length of data buffer.
[in]	StartLba	The start address of LBA.
[in]	SectorSize	The number of contiguous logical blocks of data that shall be transferred.
[in]	Event	If the SCSI target does not support non-blocking I/O, then Event is ignored, and blocking I/O is performed. 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 SCSI Write(16) command completes.

Return values

EFI_SUCCESS	Command is executed successfully.
EFI_BAD_BUFFER_SIZE	The SCSI Request Packet was executed, but the entire DataBuffer could not be transferred. The actual number of bytes transferred is returned in DataLength.
EFI_NOT_READY	The SCSI Request Packet could not be sent because there are too many SCSI Command Packets already queued.
EFI_DEVICE_ERROR	A device error occurred while attempting to send SCSI Request Packet.
EFI_UNSUPPORTED	The command described by the SCSI Request Packet is not supported by the SCSI initiator(i.e., SCSI Host Controller)
EFI_TIMEOUT	A timeout occurred while waiting for the SCSI Request Packet to execute.
EFI_INVALID_PARAMETER	The contents of the SCSI Request Packet are invalid.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.