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Extensible Firmware Interface Specification
13-14 12/01/02 Version 1.10
EFI_SCSI_PASS_THRU_PROTOCOL.GetTargetLun()
Summary
Used to translate a device path node to a Target ID and LUN.
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_SCSI_PASS_THRU_GET_TARGET_LUN) (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
OUT UINT32 *Target,
OUT UINT64 *Lun
);
Parameters
This A pointer to the EFI_SCSI_PASS_THRU_PROTOCOL
instance. Type EFI_SCSI_PASS_THRU_PROTOCOL is
defined in Section 13.1.
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.
Description
The EFI_SCSI_PASS_THRU_PROTOCOL.GetTargetLun() function determines the Target
ID and LUN associated with the SCSI device described by DevicePath. If DevicePath is a
device path node type that the SCSI Pass Thru driver supports, then the SCSI Pass Thru driver will
attempt to translate the contents DevicePath into a Target ID and LUN. If this translation is
successful, then that Target ID and LUN are returned in Target and Lun, and EFI_SUCCESS is
returned.
If DevicePath, Target, or Lun are NULL, then EFI_INVALID_PARAMETER is returned.
If DevicePath is not a device path node type that the SCSI Pass Thru driver supports, then
EFI_UNSUPPORTED is returned.
If DevicePath is a device path node type that the SCSI Pass Thru driver supports, but there
is not a valid translation from DevicePath to a Target ID and LUN, then EFI_NOT_FOUND
is returned.