#include "EmmcDxe.h"

Functions
VOID EFIAPI	AsyncIoCallback (IN EFI_EVENT Event, IN VOID *Context)

EFI_STATUS	EmmcSelect (IN EMMC_DEVICE *Device, IN UINT16 Rca)

EFI_STATUS	EmmcSendStatus (IN EMMC_DEVICE Device, IN UINT16 Rca, OUT UINT32 DevStatus)

EFI_STATUS	EmmcGetCsd (IN EMMC_DEVICE Device, IN UINT16 Rca, OUT EMMC_CSD Csd)

EFI_STATUS	EmmcGetCid (IN EMMC_DEVICE Device, IN UINT16 Rca, OUT EMMC_CID Cid)

EFI_STATUS	EmmcGetExtCsd (IN EMMC_DEVICE Device, OUT EMMC_EXT_CSD ExtCsd)

EFI_STATUS	EmmcSetExtCsd (IN EMMC_PARTITION Partition, IN UINT8 Offset, IN UINT8 Value, IN EFI_BLOCK_IO2_TOKEN Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcSetBlkCount (IN EMMC_PARTITION Partition, IN UINT16 BlockNum, IN EFI_BLOCK_IO2_TOKEN Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcProtocolInOut (IN EMMC_PARTITION Partition, IN UINT8 SecurityProtocol, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, OUT VOID PayloadBuffer, IN BOOLEAN IsRead, IN UINT64 Timeout, IN EFI_BLOCK_IO2_TOKEN *Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcRwMultiBlocks (IN EMMC_PARTITION Partition, IN EFI_LBA Lba, IN VOID Buffer, IN UINTN BufferSize, IN BOOLEAN IsRead, IN EFI_BLOCK_IO2_TOKEN *Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcReadWrite (IN EMMC_PARTITION Partition, IN UINT32 MediaId, IN EFI_LBA Lba, IN OUT VOID Buffer, IN UINTN BufferSize, IN BOOLEAN IsRead, IN OUT EFI_BLOCK_IO2_TOKEN *Token)

EFI_STATUS EFIAPI	EmmcReset (IN EFI_BLOCK_IO_PROTOCOL *This, IN BOOLEAN ExtendedVerification)

EFI_STATUS EFIAPI	EmmcReadBlocks (IN EFI_BLOCK_IO_PROTOCOL This, IN UINT32 MediaId, IN EFI_LBA Lba, IN UINTN BufferSize, OUT VOID Buffer)

EFI_STATUS EFIAPI	EmmcWriteBlocks (IN EFI_BLOCK_IO_PROTOCOL This, IN UINT32 MediaId, IN EFI_LBA Lba, IN UINTN BufferSize, IN VOID Buffer)

EFI_STATUS EFIAPI	EmmcFlushBlocks (IN EFI_BLOCK_IO_PROTOCOL *This)

EFI_STATUS EFIAPI	EmmcResetEx (IN EFI_BLOCK_IO2_PROTOCOL *This, IN BOOLEAN ExtendedVerification)

EFI_STATUS EFIAPI	EmmcReadBlocksEx (IN EFI_BLOCK_IO2_PROTOCOL This, IN UINT32 MediaId, IN EFI_LBA Lba, IN OUT EFI_BLOCK_IO2_TOKEN Token, IN UINTN BufferSize, OUT VOID *Buffer)

EFI_STATUS EFIAPI	EmmcWriteBlocksEx (IN EFI_BLOCK_IO2_PROTOCOL This, IN UINT32 MediaId, IN EFI_LBA Lba, IN OUT EFI_BLOCK_IO2_TOKEN Token, IN UINTN BufferSize, IN VOID *Buffer)

EFI_STATUS EFIAPI	EmmcFlushBlocksEx (IN EFI_BLOCK_IO2_PROTOCOL This, IN OUT EFI_BLOCK_IO2_TOKEN Token)

EFI_STATUS EFIAPI	EmmcSecurityProtocolInOut (IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL This, IN UINT32 MediaId, IN UINT64 Timeout, IN UINT8 SecurityProtocolId, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, OUT VOID PayloadBuffer, OUT UINTN *PayloadTransferSize, IN BOOLEAN IsRead)

EFI_STATUS EFIAPI	EmmcSecurityProtocolIn (IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL This, IN UINT32 MediaId, IN UINT64 Timeout, IN UINT8 SecurityProtocolId, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, OUT VOID PayloadBuffer, OUT UINTN *PayloadTransferSize)

EFI_STATUS EFIAPI	EmmcSecurityProtocolOut (IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL This, IN UINT32 MediaId, IN UINT64 Timeout, IN UINT8 SecurityProtocolId, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, IN VOID PayloadBuffer)

EFI_STATUS	EmmcEraseBlockStart (IN EMMC_PARTITION Partition, IN EFI_LBA StartLba, IN EFI_BLOCK_IO2_TOKEN Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcEraseBlockEnd (IN EMMC_PARTITION Partition, IN EFI_LBA EndLba, IN EFI_BLOCK_IO2_TOKEN Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcEraseBlock (IN EMMC_PARTITION Partition, IN EFI_BLOCK_IO2_TOKEN Token, IN BOOLEAN IsEnd)

EFI_STATUS	EmmcWriteZeros (IN EMMC_PARTITION *Partition, IN EFI_LBA StartLba, IN UINTN Size)

EFI_STATUS EFIAPI	EmmcEraseBlocks (IN EFI_ERASE_BLOCK_PROTOCOL This, IN UINT32 MediaId, IN EFI_LBA Lba, IN OUT EFI_ERASE_BLOCK_TOKEN Token, IN UINTN Size)

Detailed Description

The helper functions for BlockIo and BlockIo2 protocol.

Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file EmmcBlockIo.c.

Function Documentation

◆ AsyncIoCallback()

VOID EFIAPI AsyncIoCallback	(	IN EFI_EVENT	Event,
		IN VOID *	Context
	)

Nonblocking I/O callback function when the event is signaled.

Parameters

[in]	Event	The Event this notify function registered to.
[in]	Context	Pointer to the context data registered to the Event.

Definition at line 21 of file EmmcBlockIo.c.

◆ EmmcEraseBlock()

EFI_STATUS EmmcEraseBlock	(	IN EMMC_PARTITION *	Partition,
		IN EFI_BLOCK_IO2_TOKEN *	Token,
		IN BOOLEAN	IsEnd
	)

Erase specified blocks through sync or async I/O request.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	Token	A pointer to the token associated with the transaction.
[in]	IsEnd	A boolean to show whether it's the last cmd in a series of cmds. This parameter is only meaningful in async I/O request.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 1850 of file EmmcBlockIo.c.

◆ EmmcEraseBlockEnd()

EFI_STATUS EmmcEraseBlockEnd	(	IN EMMC_PARTITION *	Partition,
		IN EFI_LBA	EndLba,
		IN EFI_BLOCK_IO2_TOKEN *	Token,
		IN BOOLEAN	IsEnd
	)

Set the erase end address through sync or async I/O request.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	EndLba	The ending logical block address to be erased.
[in]	Token	A pointer to the token associated with the transaction.
[in]	IsEnd	A boolean to show whether it's the last cmd in a series of cmds. This parameter is only meaningful in async I/O request.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 1743 of file EmmcBlockIo.c.

◆ EmmcEraseBlocks()

EFI_STATUS EFIAPI EmmcEraseBlocks	(	IN EFI_ERASE_BLOCK_PROTOCOL *	This,
		IN UINT32	MediaId,
		IN EFI_LBA	Lba,
		IN OUT EFI_ERASE_BLOCK_TOKEN *	Token,
		IN UINTN	Size
	)

Erase a specified number of device blocks.

Parameters

[in]	This	Indicates a pointer to the calling context.
[in]	MediaId	The media ID that the erase request is for.
[in]	Lba	The starting logical block address to be erased. The caller is responsible for erasing only legitimate locations.
[in,out]	Token	A pointer to the token associated with the transaction.
[in]	Size	The size in bytes to be erased. This must be a multiple of the physical block size of the device.

Return values

EFI_SUCCESS	The erase request was queued if Event is not NULL. The data was erased correctly to the device if the Event is NULL.to the device.
EFI_WRITE_PROTECTED	The device cannot be erased due to write protection.
EFI_DEVICE_ERROR	The device reported an error while attempting to perform the erase operation.
EFI_INVALID_PARAMETER	The erase request contains LBAs that are not valid.
EFI_NO_MEDIA	There is no media in the device.
EFI_MEDIA_CHANGED	The MediaId is not for the current media.

Definition at line 2010 of file EmmcBlockIo.c.

◆ EmmcEraseBlockStart()

EFI_STATUS EmmcEraseBlockStart	(	IN EMMC_PARTITION *	Partition,
		IN EFI_LBA	StartLba,
		IN EFI_BLOCK_IO2_TOKEN *	Token,
		IN BOOLEAN	IsEnd
	)

Set the erase start address through sync or async I/O request.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	StartLba	The starting logical block address to be erased.
[in]	Token	A pointer to the token associated with the transaction.
[in]	IsEnd	A boolean to show whether it's the last cmd in a series of cmds. This parameter is only meaningful in async I/O request.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 1635 of file EmmcBlockIo.c.

◆ EmmcFlushBlocks()

EFI_STATUS EFIAPI EmmcFlushBlocks ( IN EFI_BLOCK_IO_PROTOCOL * This )

Flush the Block Device.

Parameters

This	Indicates a pointer to the calling context.

Return values

EFI_SUCCESS	All outstanding data was written to the device
EFI_DEVICE_ERROR	The device reported an error while writing back the data
EFI_NO_MEDIA	There is no media in the device.

Definition at line 1053 of file EmmcBlockIo.c.

◆ EmmcFlushBlocksEx()

EFI_STATUS EFIAPI EmmcFlushBlocksEx	(	IN EFI_BLOCK_IO2_PROTOCOL *	This,
		IN OUT EFI_BLOCK_IO2_TOKEN *	Token
	)

Flush the Block Device.

Parameters

[in]	This	Indicates a pointer to the calling context.
[in,out]	Token	A pointer to the token associated with the transaction.

Return values

EFI_SUCCESS	All outstanding data was written to the device
EFI_DEVICE_ERROR	The device reported an error while writing back the data
EFI_NO_MEDIA	There is no media in the device.

Definition at line 1215 of file EmmcBlockIo.c.

◆ EmmcGetCid()

EFI_STATUS EmmcGetCid	(	IN EMMC_DEVICE *	Device,
		IN UINT16	Rca,
		OUT EMMC_CID *	Cid
	)

Send command SEND_CID to the device to get the CID register data.

Parameters

[in]	Device	A pointer to the EMMC_DEVICE instance.
[in]	Rca	The relative device address to use.
[out]	Cid	The buffer to store the EMMC_CID register data.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 213 of file EmmcBlockIo.c.

◆ EmmcGetCsd()

EFI_STATUS EmmcGetCsd	(	IN EMMC_DEVICE *	Device,
		IN UINT16	Rca,
		OUT EMMC_CSD *	Csd
	)

Send command SEND_CSD to the device to get the CSD register data.

Parameters

[in]	Device	A pointer to the EMMC_DEVICE instance.
[in]	Rca	The relative device address to use.
[out]	Csd	The buffer to store the EMMC_CSD register data.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 161 of file EmmcBlockIo.c.

◆ EmmcGetExtCsd()

EFI_STATUS EmmcGetExtCsd	(	IN EMMC_DEVICE *	Device,
		OUT EMMC_EXT_CSD *	ExtCsd
	)

Send command SEND_EXT_CSD to the device to get the EXT_CSD register data.

Parameters

[in]	Device	A pointer to the EMMC_DEVICE instance.
[out]	ExtCsd	The buffer to store the EXT_CSD register data.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 264 of file EmmcBlockIo.c.

◆ EmmcProtocolInOut()

EFI_STATUS EmmcProtocolInOut	(	IN EMMC_PARTITION *	Partition,
		IN UINT8	SecurityProtocol,
		IN UINT16	SecurityProtocolSpecificData,
		IN UINTN	PayloadBufferSize,
		OUT VOID *	PayloadBuffer,
		IN BOOLEAN	IsRead,
		IN UINT64	Timeout,
		IN EFI_BLOCK_IO2_TOKEN *	Token,
		IN BOOLEAN	IsEnd
	)

Read blocks through security protocol cmds with the way of sync or async I/O request.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	SecurityProtocolId	The value of the "Security Protocol" parameter of the security protocol command to be sent.
[in]	SecurityProtocolSpecificData	The value of the "Security Protocol Specific" parameter of the security protocol command to be sent.
[in]	PayloadBufferSize	Size in bytes of the payload data buffer.
[out]	PayloadBuffer	A pointer to a destination buffer to store the security protocol command specific payload data for the security protocol command. The caller is responsible for having either implicit or explicit ownership of the buffer.
[in]	IsRead	Indicates it is a read or write operation.
[in]	Timeout	The timeout value, in 100ns units.
[in]	Token	A pointer to the token associated with the transaction.
[in]	IsEnd	A boolean to show whether it's the last cmd in a series of cmds. This parameter is only meaningful in async I/O request.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 535 of file EmmcBlockIo.c.

◆ EmmcReadBlocks()

EFI_STATUS EFIAPI EmmcReadBlocks	(	IN EFI_BLOCK_IO_PROTOCOL *	This,
		IN UINT32	MediaId,
		IN EFI_LBA	Lba,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Read BufferSize bytes from Lba into Buffer.

Parameters

This	Indicates a pointer to the calling context.
MediaId	Id of the media, changes every time the media is replaced.
Lba	The starting Logical Block Address to read from
BufferSize	Size of Buffer, must be a multiple of device block size.
Buffer	A pointer to the destination buffer for the data. The caller is responsible for either having implicit or explicit 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 performing the read.
EFI_NO_MEDIA	There is no media in the device.
EFI_MEDIA_CHANGED	The MediaId does not match the current device.
EFI_BAD_BUFFER_SIZE	The Buffer was not a multiple of the block size of the device.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not on proper alignment.

Definition at line 985 of file EmmcBlockIo.c.

◆ EmmcReadBlocksEx()

EFI_STATUS EFIAPI EmmcReadBlocksEx	(	IN EFI_BLOCK_IO2_PROTOCOL *	This,
		IN UINT32	MediaId,
		IN EFI_LBA	Lba,
		IN OUT EFI_BLOCK_IO2_TOKEN *	Token,
		IN UINTN	BufferSize,
		OUT VOID *	Buffer
	)

Read BufferSize bytes from Lba into Buffer.

Parameters

[in]	This	Indicates a pointer to the calling context.
[in]	MediaId	Id of the media, changes every time the media is replaced.
[in]	Lba	The starting Logical Block Address to read from.
[in,out]	Token	A pointer to the token associated with the transaction.
[in]	BufferSize	Size of Buffer, must be a multiple of device block size.
[out]	Buffer	A pointer to the destination buffer for the data. The caller is responsible for either having implicit or explicit ownership of the buffer.

Return values

EFI_SUCCESS	The read request was queued if Event is not NULL. The data was read correctly from the device if the Event is NULL.
EFI_DEVICE_ERROR	The device reported an error while performing the read.
EFI_NO_MEDIA	There is no media in the device.
EFI_MEDIA_CHANGED	The MediaId is not for the current media.
EFI_BAD_BUFFER_SIZE	The BufferSize parameter is not a multiple of the intrinsic block size of the device.
EFI_INVALID_PARAMETER	The read request contains LBAs that are not valid, or the buffer is not on proper alignment.
EFI_OUT_OF_RESOURCES	The request could not be completed due to a lack of resources.

Definition at line 1142 of file EmmcBlockIo.c.

◆ EmmcReadWrite()

EFI_STATUS EmmcReadWrite	(	IN EMMC_PARTITION *	Partition,
		IN UINT32	MediaId,
		IN EFI_LBA	Lba,
		IN OUT VOID *	Buffer,
		IN UINTN	BufferSize,
		IN BOOLEAN	IsRead,
		IN OUT EFI_BLOCK_IO2_TOKEN *	Token
	)

This function transfers data from/to EMMC device.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	MediaId	The media ID that the read/write request is for.
[in]	Lba	The starting logical block address to be read/written. The caller is responsible for reading/writing to only legitimate locations.
[in,out]	Buffer	A pointer to the destination/source buffer for the data.
[in]	BufferSize	Size of Buffer, must be a multiple of device block size.
[in]	IsRead	Indicates it is a read or write operation.
[in,out]	Token	A pointer to the token associated with the transaction.

Return values

EFI_SUCCESS	The data was read/written correctly to the device.
EFI_WRITE_PROTECTED	The device can not be read/written to.
EFI_DEVICE_ERROR	The device reported an error while performing the read/write.
EFI_NO_MEDIA	There is no media in the device.
EFI_MEDIA_CHANGED	The MediaId does not match the current device.
EFI_BAD_BUFFER_SIZE	The Buffer was not a multiple of the block size of the device.
EFI_INVALID_PARAMETER	The read/write request contains LBAs that are not valid, or the buffer is not on proper alignment.

Definition at line 803 of file EmmcBlockIo.c.

◆ EmmcReset()

EFI_STATUS EFIAPI EmmcReset	(	IN EFI_BLOCK_IO_PROTOCOL *	This,
		IN BOOLEAN	ExtendedVerification
	)

Reset the Block Device.

Parameters

This	Indicates a pointer to the calling context.
ExtendedVerification	Driver may perform diagnostics on reset.

Return values

EFI_SUCCESS	The device was reset.
EFI_DEVICE_ERROR	The device is not functioning properly and could not be reset.

Definition at line 944 of file EmmcBlockIo.c.

◆ EmmcResetEx()

EFI_STATUS EFIAPI EmmcResetEx	(	IN EFI_BLOCK_IO2_PROTOCOL *	This,
		IN BOOLEAN	ExtendedVerification
	)

Reset the Block Device.

Parameters

[in]	This	Indicates a pointer to the calling context.
[in]	ExtendedVerification	Driver may perform diagnostics on reset.

Return values

EFI_SUCCESS	The device was reset.
EFI_DEVICE_ERROR	The device is not functioning properly and could not be reset.

Definition at line 1076 of file EmmcBlockIo.c.

◆ EmmcRwMultiBlocks()

EFI_STATUS EmmcRwMultiBlocks	(	IN EMMC_PARTITION *	Partition,
		IN EFI_LBA	Lba,
		IN VOID *	Buffer,
		IN UINTN	BufferSize,
		IN BOOLEAN	IsRead,
		IN EFI_BLOCK_IO2_TOKEN *	Token,
		IN BOOLEAN	IsEnd
	)

Read/write multiple blocks through sync or async I/O request.

Parameters

[in]	Partition	A pointer to the EMMC_PARTITION instance.
[in]	Lba	The starting logical block address to be read/written. The caller is responsible for reading/writing to only legitimate locations.
[in]	Buffer	A pointer to the destination/source buffer for the data.
[in]	BufferSize	Size of Buffer, must be a multiple of device block size.
[in]	IsRead	Indicates it is a read or write operation.
[in]	Token	A pointer to the token associated with the transaction.
[in]	IsEnd	A boolean to show whether it's the last cmd in a series of cmds. This parameter is only meaningful in async I/O request.

Return values

EFI_SUCCESS	The request is executed successfully.
EFI_OUT_OF_RESOURCES	The request could not be executed due to a lack of resources.
Others	The request could not be executed successfully.

Definition at line 664 of file EmmcBlockIo.c.

◆ EmmcSecurityProtocolIn()

EFI_STATUS EFIAPI EmmcSecurityProtocolIn	(	IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *	This,
		IN UINT32	MediaId,
		IN UINT64	Timeout,
		IN UINT8	SecurityProtocolId,
		IN UINT16	SecurityProtocolSpecificData,
		IN UINTN	PayloadBufferSize,
		OUT VOID *	PayloadBuffer,
		OUT UINTN *	PayloadTransferSize
	)

Send a security protocol command to a device that receives data and/or the result of one or more commands sent by SendData.

The ReceiveData function sends a security protocol command to the given MediaId. The security protocol command sent is defined by SecurityProtocolId and contains the security protocol specific data SecurityProtocolSpecificData. The function returns the data from the security protocol command in PayloadBuffer.

For devices supporting the SCSI command set, the security protocol command is sent using the SECURITY PROTOCOL IN command defined in SPC-4.

For devices supporting the ATA command set, the security protocol command is sent using one of the TRUSTED RECEIVE commands defined in ATA8-ACS if PayloadBufferSize is non-zero.

If the PayloadBufferSize is zero, the security protocol command is sent using the Trusted Non-Data command defined in ATA8-ACS.

If PayloadBufferSize is too small to store the available data from the security protocol command, the function shall copy PayloadBufferSize bytes into the PayloadBuffer and return EFI_WARN_BUFFER_TOO_SMALL.

If PayloadBuffer or PayloadTransferSize is NULL and PayloadBufferSize is non-zero, the function shall return EFI_INVALID_PARAMETER.

If the given MediaId does not support security protocol commands, the function shall return EFI_UNSUPPORTED. If there is no media in the device, the function returns EFI_NO_MEDIA. If the MediaId is not the ID for the current media in the device, the function returns EFI_MEDIA_CHANGED.

If the security protocol fails to complete within the Timeout period, the function shall return EFI_TIMEOUT.

If the security protocol command completes without an error, the function shall return EFI_SUCCESS. If the security protocol command completes with an error, the function shall return EFI_DEVICE_ERROR.

Parameters

This	Indicates a pointer to the calling context.
MediaId	ID of the medium to receive data from. If there is no block IO protocol supported by the physical device, the value of MediaId is undefined.
Timeout	The timeout, in 100ns units, to use for the execution of the security protocol command. A Timeout value of 0 means that this function will wait indefinitely for the security protocol command to execute. If Timeout is greater than zero, then this function will return EFI_TIMEOUT if the time required to execute the receive data command is greater than Timeout.
SecurityProtocolId	The value of the "Security Protocol" parameter of the security protocol command to be sent.
SecurityProtocolSpecificData	The value of the "Security Protocol Specific" parameter of the security protocol command to be sent.
PayloadBufferSize	Size in bytes of the payload data buffer.
PayloadBuffer	A pointer to a destination buffer to store the security protocol command specific payload data for the security protocol command. The caller is responsible for having either implicit or explicit ownership of the buffer.
PayloadTransferSize	A pointer to a buffer to store the size in bytes of the data written to the payload data buffer.

Return values

EFI_SUCCESS	The security protocol command completed successfully.
EFI_WARN_BUFFER_TOO_SMALL	The PayloadBufferSize was too small to store the available data from the device. The PayloadBuffer contains the truncated data.
EFI_UNSUPPORTED	The given MediaId does not support security protocol commands.
EFI_DEVICE_ERROR	The security protocol command completed with an error.
EFI_NO_MEDIA	There is no media in the device.
EFI_MEDIA_CHANGED	The MediaId is not for the current media.
EFI_INVALID_PARAMETER	The PayloadBuffer or PayloadTransferSize is NULL and PayloadBufferSize is non-zero.
EFI_TIMEOUT	A timeout occurred while waiting for the security protocol command to execute.

Definition at line 1496 of file EmmcBlockIo.c.

◆ EmmcSecurityProtocolInOut()

EFI_STATUS EFIAPI EmmcSecurityProtocolInOut	(	IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *	This,
		IN UINT32	MediaId,
		IN UINT64	Timeout,
		IN UINT8	SecurityProtocolId,
		IN UINT16	SecurityProtocolSpecificData,
		IN UINTN	PayloadBufferSize,
		OUT VOID *	PayloadBuffer,
		OUT UINTN *	PayloadTransferSize,
		IN BOOLEAN	IsRead
	)