ACPI_LOWORD
PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
PciId->Segment = ACPI_LOWORD (PciValue);
PciId->Bus = ACPI_LOWORD (PciValue);
PciId->Function = ACPI_LOWORD (ACPI_LODWORD (ReturnValue));