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207 lines
12 KiB
C
207 lines
12 KiB
C
/** @file
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EFI Storage Security Command Protocol as defined in UEFI 2.3.1 specification.
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This protocol is used to abstract mass storage devices to allow code running in
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the EFI boot services environment to send security protocol commands to mass
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storage devices without specific knowledge of the type of device or controller
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that manages the device.
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Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __STORAGE_SECURITY_COMMAND_H__
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#define __STORAGE_SECURITY_COMMAND_H__
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#define EFI_STORAGE_SECURITY_COMMAND_PROTOCOL_GUID \
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{ \
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0xC88B0B6D, 0x0DFC, 0x49A7, {0x9C, 0xB4, 0x49, 0x07, 0x4B, 0x4C, 0x3A, 0x78 } \
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}
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typedef struct _EFI_STORAGE_SECURITY_COMMAND_PROTOCOL EFI_STORAGE_SECURITY_COMMAND_PROTOCOL;
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/**
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Send a security protocol command to a device that receives data and/or the result
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of one or more commands sent by SendData.
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The ReceiveData function sends a security protocol command to the given MediaId.
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The security protocol command sent is defined by SecurityProtocolId and contains
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the security protocol specific data SecurityProtocolSpecificData. The function
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returns the data from the security protocol command in PayloadBuffer.
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For devices supporting the SCSI command set, the security protocol command is sent
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using the SECURITY PROTOCOL IN command defined in SPC-4.
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For devices supporting the ATA command set, the security protocol command is sent
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using one of the TRUSTED RECEIVE commands defined in ATA8-ACS if PayloadBufferSize
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is non-zero.
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If the PayloadBufferSize is zero, the security protocol command is sent using the
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Trusted Non-Data command defined in ATA8-ACS.
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If PayloadBufferSize is too small to store the available data from the security
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protocol command, the function shall copy PayloadBufferSize bytes into the
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PayloadBuffer and return EFI_WARN_BUFFER_TOO_SMALL.
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If PayloadBuffer or PayloadTransferSize is NULL and PayloadBufferSize is non-zero,
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the function shall return EFI_INVALID_PARAMETER.
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If the given MediaId does not support security protocol commands, the function shall
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return EFI_UNSUPPORTED. If there is no media in the device, the function returns
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EFI_NO_MEDIA. If the MediaId is not the ID for the current media in the device,
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the function returns EFI_MEDIA_CHANGED.
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If the security protocol fails to complete within the Timeout period, the function
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shall return EFI_TIMEOUT.
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If the security protocol command completes without an error, the function shall
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return EFI_SUCCESS. If the security protocol command completes with an error, the
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function shall return EFI_DEVICE_ERROR.
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@param This Indicates a pointer to the calling context.
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@param MediaId ID of the medium to receive data from.
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@param Timeout The timeout, in 100ns units, to use for the execution
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of the security protocol command. A Timeout value of 0
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means that this function will wait indefinitely for the
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security protocol command to execute. If Timeout is greater
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than zero, then this function will return EFI_TIMEOUT if the
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time required to execute the receive data command is greater than Timeout.
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@param SecurityProtocolId The value of the "Security Protocol" parameter of
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the security protocol command to be sent.
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@param SecurityProtocolSpecificData The value of the "Security Protocol Specific" parameter
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of the security protocol command to be sent.
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@param PayloadBufferSize Size in bytes of the payload data buffer.
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@param PayloadBuffer A pointer to a destination buffer to store the security
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protocol command specific payload data for the security
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protocol command. The caller is responsible for having
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either implicit or explicit ownership of the buffer.
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@param PayloadTransferSize A pointer to a buffer to store the size in bytes of the
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data written to the payload data buffer.
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@retval EFI_SUCCESS The security protocol command completed successfully.
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@retval EFI_WARN_BUFFER_TOO_SMALL The PayloadBufferSize was too small to store the available
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data from the device. The PayloadBuffer contains the truncated data.
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@retval EFI_UNSUPPORTED The given MediaId does not support security protocol commands.
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@retval EFI_DEVICE_ERROR The security protocol command completed with an error.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_INVALID_PARAMETER The PayloadBuffer or PayloadTransferSize is NULL and
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PayloadBufferSize is non-zero.
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@retval EFI_TIMEOUT A timeout occurred while waiting for the security
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protocol command to execute.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_STORAGE_SECURITY_RECEIVE_DATA)(
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IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *This,
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IN UINT32 MediaId,
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IN UINT64 Timeout,
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IN UINT8 SecurityProtocolId,
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IN UINT16 SecurityProtocolSpecificData,
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IN UINTN PayloadBufferSize,
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OUT VOID *PayloadBuffer,
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OUT UINTN *PayloadTransferSize
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);
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/**
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Send a security protocol command to a device.
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The SendData function sends a security protocol command containing the payload
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PayloadBuffer to the given MediaId. The security protocol command sent is
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defined by SecurityProtocolId and contains the security protocol specific data
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SecurityProtocolSpecificData. If the underlying protocol command requires a
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specific padding for the command payload, the SendData function shall add padding
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bytes to the command payload to satisfy the padding requirements.
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For devices supporting the SCSI command set, the security protocol command is sent
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using the SECURITY PROTOCOL OUT command defined in SPC-4.
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For devices supporting the ATA command set, the security protocol command is sent
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using one of the TRUSTED SEND commands defined in ATA8-ACS if PayloadBufferSize
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is non-zero. If the PayloadBufferSize is zero, the security protocol command is
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sent using the Trusted Non-Data command defined in ATA8-ACS.
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If PayloadBuffer is NULL and PayloadBufferSize is non-zero, the function shall
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return EFI_INVALID_PARAMETER.
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If the given MediaId does not support security protocol commands, the function
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shall return EFI_UNSUPPORTED. If there is no media in the device, the function
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returns EFI_NO_MEDIA. If the MediaId is not the ID for the current media in the
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device, the function returns EFI_MEDIA_CHANGED.
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If the security protocol fails to complete within the Timeout period, the function
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shall return EFI_TIMEOUT.
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If the security protocol command completes without an error, the function shall return
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EFI_SUCCESS. If the security protocol command completes with an error, the function
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shall return EFI_DEVICE_ERROR.
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@param This Indicates a pointer to the calling context.
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@param MediaId ID of the medium to receive data from.
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@param Timeout The timeout, in 100ns units, to use for the execution
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of the security protocol command. A Timeout value of 0
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means that this function will wait indefinitely for the
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security protocol command to execute. If Timeout is greater
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than zero, then this function will return EFI_TIMEOUT if the
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time required to execute the receive data command is greater than Timeout.
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@param SecurityProtocolId The value of the "Security Protocol" parameter of
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the security protocol command to be sent.
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@param SecurityProtocolSpecificData The value of the "Security Protocol Specific" parameter
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of the security protocol command to be sent.
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@param PayloadBufferSize Size in bytes of the payload data buffer.
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@param PayloadBuffer A pointer to a destination buffer to store the security
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protocol command specific payload data for the security
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protocol command.
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@retval EFI_SUCCESS The security protocol command completed successfully.
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@retval EFI_UNSUPPORTED The given MediaId does not support security protocol commands.
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@retval EFI_DEVICE_ERROR The security protocol command completed with an error.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_INVALID_PARAMETER The PayloadBuffer is NULL and PayloadBufferSize is non-zero.
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@retval EFI_TIMEOUT A timeout occurred while waiting for the security
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protocol command to execute.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_STORAGE_SECURITY_SEND_DATA) (
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IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *This,
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IN UINT32 MediaId,
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IN UINT64 Timeout,
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IN UINT8 SecurityProtocolId,
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IN UINT16 SecurityProtocolSpecificData,
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IN UINTN PayloadBufferSize,
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IN VOID *PayloadBuffer
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);
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///
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/// The EFI_STORAGE_SECURITY_COMMAND_PROTOCOL is used to send security protocol
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/// commands to a mass storage device. Two types of security protocol commands
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/// are supported. SendData sends a command with data to a device. ReceiveData
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/// sends a command that receives data and/or the result of one or more commands
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/// sent by SendData.
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///
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/// The security protocol command formats supported shall be based on the definition
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/// of the SECURITY PROTOCOL IN and SECURITY PROTOCOL OUT commands defined in SPC-4.
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/// If the device uses the SCSI command set, no translation is needed in the firmware
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/// and the firmware can package the parameters into a SECURITY PROTOCOL IN or SECURITY
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/// PROTOCOL OUT command and send the command to the device. If the device uses a
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/// non-SCSI command set, the firmware shall map the command and data payload to the
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/// corresponding command and payload format defined in the non-SCSI command set
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/// (for example, TRUSTED RECEIVE and TRUSTED SEND in ATA8-ACS).
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///
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/// The firmware shall automatically add an EFI_STORAGE_SECURITY_COMMAND_PROTOCOL
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/// for any storage devices detected during system boot that support SPC-4, ATA8-ACS
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/// or their successors.
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///
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struct _EFI_STORAGE_SECURITY_COMMAND_PROTOCOL {
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EFI_STORAGE_SECURITY_RECEIVE_DATA ReceiveData;
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EFI_STORAGE_SECURITY_SEND_DATA SendData;
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};
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extern EFI_GUID gEfiStorageSecurityCommandProtocolGuid;
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#endif
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