ACPI_DMAR_TYPE_HARDWARE_UNIT
[DMAR_DSM_FUNC_DRHD] = ACPI_DMAR_TYPE_HARDWARE_UNIT,
case ACPI_DMAR_TYPE_HARDWARE_UNIT:
.arg[ACPI_DMAR_TYPE_HARDWARE_UNIT] = &drhd_count,
.cb[ACPI_DMAR_TYPE_HARDWARE_UNIT] = &dmar_parse_one_drhd,
.cb[ACPI_DMAR_TYPE_HARDWARE_UNIT] = &dmar_validate_one_drhd,