Functions
EFI_STATUS EFIAPI	AhciStorageSecurityGetDeviceNo (IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI This, OUT UINTN NumberofDevices)

EFI_STATUS EFIAPI	AhciStorageSecurityGetDevicePath (IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI This, IN UINTN DeviceIndex, OUT UINTN DevicePathLength, OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath)

EFI_STATUS EFIAPI	AhciStorageSecurityReceiveData (IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI This, IN UINTN DeviceIndex, IN UINT64 Timeout, IN UINT8 SecurityProtocolId, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, OUT VOID PayloadBuffer, OUT UINTN *PayloadTransferSize)

EFI_STATUS EFIAPI	AhciStorageSecuritySendData (IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI This, IN UINTN DeviceIndex, IN UINT64 Timeout, IN UINT8 SecurityProtocolId, IN UINT16 SecurityProtocolSpecificData, IN UINTN PayloadBufferSize, IN VOID PayloadBuffer)

Detailed Description

The AhciPei driver is used to manage ATA hard disk device working under AHCI mode at PEI phase.

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

Definition in file AhciPeiStorageSecurity.h.

Function Documentation

◆ AhciStorageSecurityGetDeviceNo()

EFI_STATUS EFIAPI AhciStorageSecurityGetDeviceNo	(	IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI *	This,
		OUT UINTN *	NumberofDevices
	)

Gets the count of storage security devices that one specific driver detects.

Parameters

[in]	This	The PPI instance pointer.
[out]	NumberofDevices	The number of storage security devices discovered.

Return values

EFI_SUCCESS	The operation performed successfully.
EFI_INVALID_PARAMETER	The parameters are invalid.

Definition at line 60 of file AhciPeiStorageSecurity.c.

◆ AhciStorageSecurityGetDevicePath()

EFI_STATUS EFIAPI AhciStorageSecurityGetDevicePath	(	IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI *	This,
		IN UINTN	DeviceIndex,
		OUT UINTN *	DevicePathLength,
		OUT EFI_DEVICE_PATH_PROTOCOL **	DevicePath
	)

Gets the device path of a specific storage security device.

Parameters

[in]	This	The PPI instance pointer.
[in]	DeviceIndex	Specifies the storage security device to which the function wants to talk. Because the driver that implements Storage Security Command PPIs will manage multiple storage 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 NumberofDevices.
[out]	DevicePathLength	The length of the device path in bytes specified by DevicePath.
[out]	DevicePath	The device path of storage security device. This field re-uses EFI Device Path Protocol as defined by Section 10.2 EFI Device Path Protocol of UEFI 2.7 Specification.

Return values

EFI_SUCCESS	The operation succeeds.
EFI_INVALID_PARAMETER	DevicePathLength or DevicePath is NULL.
EFI_NOT_FOUND	The specified storage security device not found.
EFI_OUT_OF_RESOURCES	The operation fails due to lack of resources.

Definition at line 104 of file AhciPeiStorageSecurity.c.

◆ AhciStorageSecurityReceiveData()

EFI_STATUS EFIAPI AhciStorageSecurityReceiveData	(	IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI *	This,
		IN UINTN	DeviceIndex,
		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 DeviceIndex. 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 DeviceIndex does not support security protocol commands, the function shall return EFI_UNSUPPORTED.

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

[in]	This	The PPI instance pointer.
[in]	DeviceIndex	Specifies the storage security device to which the function wants to talk. Because the driver that implements Storage Security Command PPIs will manage multiple storage 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 NumberofDevices.
[in]	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.
[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.
[out]	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 DeviceIndex does not support security protocol commands.
EFI_DEVICE_ERROR	The security protocol command completed with an error.
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 231 of file AhciPeiStorageSecurity.c.

◆ AhciStorageSecuritySendData()

EFI_STATUS EFIAPI AhciStorageSecuritySendData	(	IN EDKII_PEI_STORAGE_SECURITY_CMD_PPI *	This,
		IN UINTN	DeviceIndex,
		IN UINT64	Timeout,
		IN UINT8	SecurityProtocolId,
		IN UINT16	SecurityProtocolSpecificData,
		IN UINTN	PayloadBufferSize,
		IN VOID *	PayloadBuffer
	)

Send a security protocol command to a device.

The SendData function sends a security protocol command containing the payload PayloadBuffer to the given DeviceIndex. The security protocol command sent is defined by SecurityProtocolId and contains the security protocol specific data SecurityProtocolSpecificData. If the underlying protocol command requires a specific padding for the command payload, the SendData function shall add padding bytes to the command payload to satisfy the padding requirements.

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

For devices supporting the ATA command set, the security protocol command is sent using one of the TRUSTED SEND 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 PayloadBuffer is NULL and PayloadBufferSize is non-zero, the function shall return EFI_INVALID_PARAMETER.

If the given DeviceIndex does not support security protocol commands, the function shall return EFI_UNSUPPORTED.

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 functio shall return EFI_DEVICE_ERROR.

Parameters

[in]	This	The PPI instance pointer.
[in]	DeviceIndex	The ID of the device.
[in]	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.
[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.
[in]	PayloadBuffer	A pointer to a destination buffer to store the security protocol command specific payload data for the security protocol command.

Return values

EFI_SUCCESS	The security protocol command completed successfully.
EFI_UNSUPPORTED	The given DeviceIndex does not support security protocol commands.
EFI_DEVICE_ERROR	The security protocol command completed with an error.
EFI_INVALID_PARAMETER	The PayloadBuffer is NULL and PayloadBufferSize is non-zero.
EFI_TIMEOUT	A timeout occurred while waiting for the security protocol command to execute.

Definition at line 342 of file AhciPeiStorageSecurity.c.

Functions

Detailed Description

Function Documentation

◆ AhciStorageSecurityGetDeviceNo()

◆ AhciStorageSecurityGetDevicePath()

◆ AhciStorageSecurityReceiveData()

◆ AhciStorageSecuritySendData()