MdePkg/Include/Protocol/StorageSecurityCommand.h

   1 /** @file
   2   EFI Storage Security Command Protocol as defined in UEFI 2.3.1 specification.
   3   This protocol is used to abstract mass storage devices to allow code running in
   4   the EFI boot services environment to send security protocol commands to mass
   5   storage devices without specific knowledge of the type of device or controller
   6   that manages the device.
   7
   8   Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
   9   This program and the accompanying materials
  10   are licensed and made available under the terms and conditions of the BSD License
  11   which accompanies this distribution.  The full text of the license may be found at
  12   http://opensource.org/licenses/bsd-license.php
  13
  14   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  15   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16
  17 **/
  18
  19 #ifndef __STORAGE_SECURITY_COMMAND_H__
  20 #define __STORAGE_SECURITY_COMMAND_H__
  21
  22 #define EFI_STORAGE_SECURITY_COMMAND_PROTOCOL_GUID \
  23   { \
  24     0xC88B0B6D, 0x0DFC, 0x49A7, {0x9C, 0xB4, 0x49, 0x07, 0x4B, 0x4C, 0x3A, 0x78 } \
  25   }
  26
  27 typedef struct _EFI_STORAGE_SECURITY_COMMAND_PROTOCOL  EFI_STORAGE_SECURITY_COMMAND_PROTOCOL;
  28
  29 /**
  30   Send a security protocol command to a device that receives data and/or the result
  31   of one or more commands sent by SendData.
  32
  33   The ReceiveData function sends a security protocol command to the given MediaId.
  34   The security protocol command sent is defined by SecurityProtocolId and contains
  35   the security protocol specific data SecurityProtocolSpecificData. The function
  36   returns the data from the security protocol command in PayloadBuffer.
  37
  38   For devices supporting the SCSI command set, the security protocol command is sent
  39   using the SECURITY PROTOCOL IN command defined in SPC-4.
  40
  41   For devices supporting the ATA command set, the security protocol command is sent
  42   using one of the TRUSTED RECEIVE commands defined in ATA8-ACS if PayloadBufferSize
  43   is non-zero.
  44
  45   If the PayloadBufferSize is zero, the security protocol command is sent using the
  46   Trusted Non-Data command defined in ATA8-ACS.
  47
  48   If PayloadBufferSize is too small to store the available data from the security
  49   protocol command, the function shall copy PayloadBufferSize bytes into the
  50   PayloadBuffer and return EFI_WARN_BUFFER_TOO_SMALL.
  51
  52   If PayloadBuffer or PayloadTransferSize is NULL and PayloadBufferSize is non-zero,
  53   the function shall return EFI_INVALID_PARAMETER.
  54
  55   If the given MediaId does not support security protocol commands, the function shall
  56   return EFI_UNSUPPORTED. If there is no media in the device, the function returns
  57   EFI_NO_MEDIA. If the MediaId is not the ID for the current media in the device,
  58   the function returns EFI_MEDIA_CHANGED.
  59
  60   If the security protocol fails to complete within the Timeout period, the function
  61   shall return EFI_TIMEOUT.
  62
  63   If the security protocol command completes without an error, the function shall
  64   return EFI_SUCCESS. If the security protocol command completes with an error, the
  65   function shall return EFI_DEVICE_ERROR.
  66
  67   @param  This                         Indicates a pointer to the calling context.
  68   @param  MediaId                      ID of the medium to receive data from.
  69   @param  Timeout                      The timeout, in 100ns units, to use for the execution
  70                                        of the security protocol command. A Timeout value of 0
  71                                        means that this function will wait indefinitely for the
  72                                        security protocol command to execute. If Timeout is greater
  73                                        than zero, then this function will return EFI_TIMEOUT if the
  74                                        time required to execute the receive data command is greater than Timeout.
  75   @param  SecurityProtocolId           The value of the "Security Protocol" parameter of
  76                                        the security protocol command to be sent.
  77   @param  SecurityProtocolSpecificData The value of the "Security Protocol Specific" parameter
  78                                        of the security protocol command to be sent.
  79   @param  PayloadBufferSize            Size in bytes of the payload data buffer.
  80   @param  PayloadBuffer                A pointer to a destination buffer to store the security
  81                                        protocol command specific payload data for the security
  82                                        protocol command. The caller is responsible for having
  83                                        either implicit or explicit ownership of the buffer.
  84   @param  PayloadTransferSize          A pointer to a buffer to store the size in bytes of the
  85                                        data written to the payload data buffer.
  86
  87   @retval EFI_SUCCESS                  The security protocol command completed successfully.
  88   @retval EFI_WARN_BUFFER_TOO_SMALL    The PayloadBufferSize was too small to store the available
  89                                        data from the device. The PayloadBuffer contains the truncated data.
  90   @retval EFI_UNSUPPORTED              The given MediaId does not support security protocol commands.
  91   @retval EFI_DEVICE_ERROR             The security protocol command completed with an error.
  92   @retval EFI_NO_MEDIA                 There is no media in the device.
  93   @retval EFI_MEDIA_CHANGED            The MediaId is not for the current media.
  94   @retval EFI_INVALID_PARAMETER        The PayloadBuffer or PayloadTransferSize is NULL and
  95                                        PayloadBufferSize is non-zero.
  96   @retval EFI_TIMEOUT                  A timeout occurred while waiting for the security
  97                                        protocol command to execute.
  98
  99 **/
 100 typedef
 101 EFI_STATUS
 102 (EFIAPI *EFI_STORAGE_SECURITY_RECEIVE_DATA)(
 103   IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL    *This,
 104   IN UINT32                                   MediaId,
 105   IN UINT64                                   Timeout,
 106   IN UINT8                                    SecurityProtocolId,
 107   IN UINT16                                   SecurityProtocolSpecificData,
 108   IN UINTN                                    PayloadBufferSize,
 109   OUT VOID                                    *PayloadBuffer,
 110   OUT UINTN                                   *PayloadTransferSize
 111   );
 112
 113 /**
 114   Send a security protocol command to a device.
 115
 116   The SendData function sends a security protocol command containing the payload
 117   PayloadBuffer to the given MediaId. The security protocol command sent is
 118   defined by SecurityProtocolId and contains the security protocol specific data
 119   SecurityProtocolSpecificData. If the underlying protocol command requires a
 120   specific padding for the command payload, the SendData function shall add padding
 121   bytes to the command payload to satisfy the padding requirements.
 122
 123   For devices supporting the SCSI command set, the security protocol command is sent
 124   using the SECURITY PROTOCOL OUT command defined in SPC-4.
 125
 126   For devices supporting the ATA command set, the security protocol command is sent
 127   using one of the TRUSTED SEND commands defined in ATA8-ACS if PayloadBufferSize
 128   is non-zero. If the PayloadBufferSize is zero, the security protocol command is
 129   sent using the Trusted Non-Data command defined in ATA8-ACS.
 130
 131   If PayloadBuffer is NULL and PayloadBufferSize is non-zero, the function shall
 132   return EFI_INVALID_PARAMETER.
 133
 134   If the given MediaId does not support security protocol commands, the function
 135   shall return EFI_UNSUPPORTED. If there is no media in the device, the function
 136   returns EFI_NO_MEDIA. If the MediaId is not the ID for the current media in the
 137   device, the function returns EFI_MEDIA_CHANGED.
 138
 139   If the security protocol fails to complete within the Timeout period, the function
 140   shall return EFI_TIMEOUT.
 141
 142   If the security protocol command completes without an error, the function shall return
 143   EFI_SUCCESS. If the security protocol command completes with an error, the function
 144   shall return EFI_DEVICE_ERROR.
 145
 146   @param  This                         Indicates a pointer to the calling context.
 147   @param  MediaId                      ID of the medium to receive data from.
 148   @param  Timeout                      The timeout, in 100ns units, to use for the execution
 149                                        of the security protocol command. A Timeout value of 0
 150                                        means that this function will wait indefinitely for the
 151                                        security protocol command to execute. If Timeout is greater
 152                                        than zero, then this function will return EFI_TIMEOUT if the
 153                                        time required to execute the receive data command is greater than Timeout.
 154   @param  SecurityProtocolId           The value of the "Security Protocol" parameter of
 155                                        the security protocol command to be sent.
 156   @param  SecurityProtocolSpecificData The value of the "Security Protocol Specific" parameter
 157                                        of the security protocol command to be sent.
 158   @param  PayloadBufferSize            Size in bytes of the payload data buffer.
 159   @param  PayloadBuffer                A pointer to a destination buffer to store the security
 160                                        protocol command specific payload data for the security
 161                                        protocol command.
 162
 163   @retval EFI_SUCCESS                  The security protocol command completed successfully.
 164   @retval EFI_UNSUPPORTED              The given MediaId does not support security protocol commands.
 165   @retval EFI_DEVICE_ERROR             The security protocol command completed with an error.
 166   @retval EFI_NO_MEDIA                 There is no media in the device.
 167   @retval EFI_MEDIA_CHANGED            The MediaId is not for the current media.
 168   @retval EFI_INVALID_PARAMETER        The PayloadBuffer is NULL and PayloadBufferSize is non-zero.
 169   @retval EFI_TIMEOUT                  A timeout occurred while waiting for the security
 170                                        protocol command to execute.
 171
 172 **/
 173 typedef
 174 EFI_STATUS
 175 (EFIAPI *EFI_STORAGE_SECURITY_SEND_DATA) (
 176   IN EFI_STORAGE_SECURITY_COMMAND_PROTOCOL    *This,
 177   IN UINT32                                   MediaId,
 178   IN UINT64                                   Timeout,
 179   IN UINT8                                    SecurityProtocolId,
 180   IN UINT16                                   SecurityProtocolSpecificData,
 181   IN UINTN                                    PayloadBufferSize,
 182   IN VOID                                     *PayloadBuffer
 183 );
 184
 185 ///
 186 /// The EFI_STORAGE_SECURITY_COMMAND_PROTOCOL is used to send security protocol
 187 /// commands to a mass storage device. Two types of security protocol commands
 188 /// are supported. SendData sends a command with data to a device. ReceiveData
 189 /// sends a command that receives data and/or the result of one or more commands
 190 /// sent by SendData.
 191 ///
 192 /// The security protocol command formats supported shall be based on the definition
 193 /// of the SECURITY PROTOCOL IN and SECURITY PROTOCOL OUT commands defined in SPC-4.
 194 /// If the device uses the SCSI command set, no translation is needed in the firmware
 195 /// and the firmware can package the parameters into a SECURITY PROTOCOL IN or SECURITY
 196 /// PROTOCOL OUT command and send the command to the device. If the device uses a
 197 /// non-SCSI command set, the firmware shall map the command and data payload to the
 198 /// corresponding command and payload format defined in the non-SCSI command set
 199 /// (for example, TRUSTED RECEIVE and TRUSTED SEND in ATA8-ACS).
 200 ///
 201 /// The firmware shall automatically add an EFI_STORAGE_SECURITY_COMMAND_PROTOCOL
 202 /// for any storage devices detected during system boot that support SPC-4, ATA8-ACS
 203 /// or their successors.
 204 ///
 205 struct _EFI_STORAGE_SECURITY_COMMAND_PROTOCOL {
 206   EFI_STORAGE_SECURITY_RECEIVE_DATA ReceiveData;
 207   EFI_STORAGE_SECURITY_SEND_DATA    SendData;
 208 };
 209
 210 extern EFI_GUID gEfiStorageSecurityCommandProtocolGuid;
 211
 212 #endif