ACPI_DMARS_OFFSET
{ACPI_DMT_DMAR_SCOPE, ACPI_DMARS_OFFSET (EntryType), "Device Scope Type", 0},
{ACPI_DMT_UINT8, ACPI_DMARS_OFFSET (Length), "Entry Length", DT_LENGTH},
{ACPI_DMT_UINT16, ACPI_DMARS_OFFSET (Reserved), "Reserved", 0},
{ACPI_DMT_UINT8, ACPI_DMARS_OFFSET (EnumerationId), "Enumeration ID", 0},
{ACPI_DMT_UINT8, ACPI_DMARS_OFFSET (Bus), "PCI Bus Number", 0},