atapiextpassthru.h

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  IN  EFI_HANDLE                   Controller,
  IN  EFI_PCI_IO_PROTOCOL          *PciIo
  )
/*++

Routine Description:
  Attaches SCSI Pass Thru Protocol for specified IDE channel.
    
Arguments:
  This              - Protocol instance pointer.
  Controller        - Parent device handle to the IDE channel.    
  PciIo             - PCI I/O protocol attached on the "Controller".                        
  
Returns:

  Always return EFI_SUCCESS unless installing SCSI Pass Thru Protocol failed.

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruFunction (
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL                    *This,
  IN UINT8                                              *Target,
  IN UINT64                                             Lun,
  IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET     *Packet,
  IN EFI_EVENT                                          Event OPTIONAL
  )
/*++

Routine Description:

  Implements EFI_EXT_SCSI_PASS_THRU_PROTOCOL.PassThru() function.

Arguments:

  This:     The EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
  Target:   The Target ID of the ATAPI device to send the SCSI 
            Request Packet. To ATAPI devices attached on an IDE
            Channel, Target ID 0 indicates Master device;Target
            ID 1 indicates Slave device.
  Lun:      The LUN of the ATAPI device to send the SCSI Request
            Packet. To the ATAPI device, Lun is always 0.
  Packet:   The SCSI Request Packet to send to the ATAPI device 
            specified by Target and Lun.
  Event:    If non-blocking I/O is not supported 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 Request Packet completes.      

Returns:  

  EFI_STATUS

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruGetNextTargetLun (
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,
  IN OUT UINT8                           **Target,
  IN OUT UINT64                          *Lun
  )
/*++

Routine Description:

  Used to retrieve the list of legal Target IDs for SCSI devices 
  on a SCSI channel.

Arguments:

  This                  - Protocol instance pointer.
  Target                - On input, a pointer to the Target ID of a SCSI 
                          device present on the SCSI channel.  On output, 
                          a pointer to the Target ID of the next SCSI device
                          present on a SCSI channel.  An input value of 
                          0xFFFFFFFF retrieves the Target ID of the first 
                          SCSI device present on a SCSI channel.
  Lun                   - On input, a pointer to the LUN of a SCSI device
                          present on the SCSI channel. On output, a pointer
                          to the LUN of the next SCSI device present on 
                          a SCSI channel.
Returns:

  EFI_SUCCESS           - The Target ID and Lun of the next SCSI device 
                          on the SCSI channel was returned in Target and Lun.
  EFI_NOT_FOUND         - There are no more SCSI devices on this SCSI channel.
  EFI_INVALID_PARAMETER - Target is not 0xFFFFFFFF,and Target and Lun were not
                           returned on a previous call to GetNextDevice().

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruBuildDevicePath (
  IN     EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,
  IN     UINT8                              *Target,
  IN     UINT64                             Lun,
  IN OUT EFI_DEVICE_PATH_PROTOCOL           **DevicePath
  )
/*++

Routine Description:

  Used to allocate and build a device path node for a SCSI device 
  on a SCSI channel. Would not build device path for a SCSI Host Controller.

Arguments:

  This                  - Protocol instance pointer.
  Target                - The Target ID of the SCSI device for which
                          a device path node is to be allocated and built.
  Lun                   - The LUN of the SCSI device for which a device 
                          path node is to be allocated and built.
  DevicePath            - A pointer to a single device path node that 
                          describes the SCSI device specified by 
                          Target and Lun. This function is responsible 
                          for allocating the buffer DevicePath with the boot
                          service AllocatePool().  It is the caller's 
                          responsibility to free DevicePath when the caller
                          is finished with DevicePath.    
  Returns:
  EFI_SUCCESS           - The device path node that describes the SCSI device
                          specified by Target and Lun was allocated and 
                          returned in DevicePath.
  EFI_NOT_FOUND         - The SCSI devices specified by Target and Lun does
                          not exist on the SCSI channel.
  EFI_INVALID_PARAMETER - DevicePath is NULL.
  EFI_OUT_OF_RESOURCES  - There are not enough resources to allocate 
                          DevicePath.

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruGetTargetLun (
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,
  IN  EFI_DEVICE_PATH_PROTOCOL       *DevicePath,
  OUT UINT8                          **Target,
  OUT UINT64                         *Lun
  )
/*++

Routine Description:

  Used to translate a device path node to a Target ID and LUN.

Arguments:

  This                  - Protocol instance pointer.
  DevicePath            - A pointer to the device path node that 
                          describes a SCSI device on the SCSI channel.
  Target                - A pointer to the Target ID of a SCSI device 
                          on the SCSI channel. 
  Lun                   - A pointer to the LUN of a SCSI device on 
                          the SCSI channel.    
Returns:

  EFI_SUCCESS           - DevicePath was successfully translated to a 
                          Target ID and LUN, and they were returned 
                          in Target and Lun.
  EFI_INVALID_PARAMETER - DevicePath/Target/Lun is NULL.
  EFI_UNSUPPORTED       - This driver does not support the device path 
                          node type in DevicePath.
  EFI_NOT_FOUND         - A valid translation from DevicePath to a 
                          Target ID and LUN does not exist.

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruResetChannel (
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL   *This
  )
/*++

Routine Description:

  Resets a SCSI channel.This operation resets all the 
  SCSI devices connected to the SCSI channel.

Arguments:

  This                  - Protocol instance pointer.

Returns:

  EFI_SUCCESS           - The SCSI channel was reset.
  EFI_UNSUPPORTED       - The SCSI channel does not support 
                          a channel reset operation.
  EFI_DEVICE_ERROR      - A device error occurred while 
                          attempting to reset the SCSI channel.
  EFI_TIMEOUT           - A timeout occurred while attempting 
                          to reset the SCSI channel.

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruResetTarget (
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,
  IN UINT8                              *Target,
  IN UINT64                             Lun
  )
/*++

Routine Description:

  Resets a SCSI device that is connected to a SCSI channel.

Arguments:

  This                  - Protocol instance pointer.
  Target                - The Target ID of the SCSI device to reset. 
  Lun                   - The LUN of the SCSI device to reset.
    
Returns:

  EFI_SUCCESS           - The SCSI device specified by Target and 
                          Lun was reset.
  EFI_UNSUPPORTED       - The SCSI channel does not support a target
                          reset operation.
  EFI_INVALID_PARAMETER - Target or Lun are invalid.
  EFI_DEVICE_ERROR      - A device error occurred while attempting 
                          to reset the SCSI device specified by Target 
                          and Lun.
  EFI_TIMEOUT           - A timeout occurred while attempting to reset 
                          the SCSI device specified by Target and Lun.

--*/
;

EFI_STATUS
EFIAPI
AtapiExtScsiPassThruGetNextTarget (
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,
  IN OUT UINT8                           **Target
  )
/*++

Routine Description:
  Used to retrieve the list of legal Target IDs for SCSI devices 
  on a SCSI channel.

Arguments:
  This                  - Protocol instance pointer.
  Target                - On input, a pointer to the Target ID of a SCSI 
                          device present on the SCSI channel.  On output, 
                          a pointer to the Target ID of the next SCSI device
                           present on a SCSI channel.  An input value of 
                           0xFFFFFFFF retrieves the Target ID of the first 
                           SCSI device present on a SCSI channel.
  Lun                   - On input, a pointer to the LUN of a SCSI device
                          present on the SCSI channel. On output, a pointer
                          to the LUN of the next SCSI device present on 
                          a SCSI channel.
    
Returns:
  EFI_SUCCESS           - The Target ID and Lun of the next SCSI device 
                          on the SCSI channel was returned in Target and Lun.
  EFI_NOT_FOUND         - There are no more SCSI devices on this SCSI channel.
  EFI_INVALID_PARAMETER - Target is not 0xFFFFFFFF,and Target and Lun were not
                          returned on a previous call to GetNextDevice().

--*/
;

#endif