Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
0x81-0xBF
Reserved.
5.6.7 Device Class-Specific Objects
Most device objects are controlled through generic objects and control methods and they have
generic device IDs. These generic objects, control methods, and device IDs are specified in
Section 6, through Section 11 . Section 5.6.8, “Predefined ACPI Names for Objects, Methods, and
Resources,” lists all the generic objects and control methods defined in this specification.
However, certain integrated devices require support for some device-specific ACPI controls. This
section lists these devices, along with the device-specific ACPI controls that can be provided.
Some of these controls are for ACPI-aware devices and as such have Plug and Play IDs that
represent these devices. The table below lists the Plug and Play IDs defined by the ACPI
specification.
Note: Plug and Play IDs that are not defined by the ACPI specification are defined and described in the
“Links to ACPI-Related Documents” (http://uefi.org/acpi) under the heading "Legacy PNP
Guidelines".
Table 5-161 ACPI Device IDs
Plug and
Play ID
PNP0C08
PNP0A05
PNP0A06
PNP0C09
PNP0C0A
PNP0C0B
PNP0C0C
PNP0C0D
Description
ACPI. Not declared in ACPI as a device. This ID is used by OSPM for the hardware
resources consumed by the ACPI fixed register spaces, and the operation regions used by
AML code. It represents the core ACPI hardware itself.
Generic Container Device. A device whose settings are totally controlled by its ACPI
resource information, and otherwise needs no device or bus-specific driver support. This was
originally known as Generic ISA Bus Device. This ID should only be used for containers that
do not produce resources for consumption by child devices. Any system resources claimed
by a PNP0A05 device’s _CRS object must be consumed by the container itself.
Generic Container Device. This device behaves exactly the same as the PNP0A05 device.
This was originally known as Extended I/O Bus. This ID should only be used for containers
that do not produce resources for consumption by child devices. Any system resources
claimed by a PNP0A06 device’s _CRS object must be consumed by the container itself.
Embedded Controller Device. A host embedded controller controlled through an ACPIaware
driver.
Control Method Battery. A device that solely implements the ACPI Control Method Battery
functions. A device that has some other primary function would use its normal device ID. This
ID is used when the devices primary function is that of a battery.
Fan. A device that causes cooling when “on” (D0 device state).
Power Button Device. A device controlled through an ACPI-aware driver that provides
power button functionality. This device is only needed if the power button is not supported
using the fixed register space.
Lid Device. A device controlled through an ACPI-aware driver that provides lid status
functionality. This device is only needed if the lid state is not supported using the fixed
register space.
256 April, 2015 Version 6.0