ACPI_DMAR1_OFFSET
{ACPI_DMT_UINT16, ACPI_DMAR1_OFFSET (Reserved), "Reserved", 0},
{ACPI_DMT_UINT16, ACPI_DMAR1_OFFSET (Segment), "PCI Segment Number", 0},
{ACPI_DMT_UINT64, ACPI_DMAR1_OFFSET (BaseAddress), "Base Address", 0},
{ACPI_DMT_UINT64, ACPI_DMAR1_OFFSET (EndAddress), "End Address (limit)", 0},