Advanced Configuration and Power Interface Specification

Power Source and Power Meter Devices
Return Value:
A Package with the following format:
Package {
Power Source State
Maximum Output Power
Maximum Input Power
Model Number
Serial Number
OEM Information
}
// Integer (DWORD)
// Integer (DWORD)
// Integer (DWORD)
// String (ASCIIZ)
// String (ASCIIZ)
// String (ASCIIZ)
Table 10-279 PIF Method Result Codes
Element Object Type Description
Power Source
State
Maximum Output
Power
Maximum Input
Power
Model Number
Serial Number
OEM Information
Integer
(DWORD)
Integer
(DWORD)
Integer
(DWORD)
String
(ASCIIZ)
String
(ASCIIZ)
String
(ASCIIZ)
Bit values that describe the type of this Power Source. These bits are
especially useful in server scenarios.
Bit [0] – indicates the power source is a redundant one. If this bit is set,
this Power Source device should have a _PRL object.
Bit [1] – indicates the power source is being shared across multiple
machines.
Bi [31:2] – Reserved.
The maximum rated output wattage of the power source device. [mW]
0xFFFFFFFF is returned if the information is unavailable.
The maximum rated input wattage of the power source device. [mW]
0xFFFFFFFF is returned if the information is unavailable.
OEM-specific Power Source model number. This element is optional
and an empty string (a null character) should be used if this is not
supported.
OEM-specific Power Source serial number. This element is optional
and an empty string (a null character) should be used if this is not
supported.
OEM-specific information that the UI uses to display about the Power
Source device. This element is optional and a NULL string should be
used if this is not supported.
10.3.4 _PRL (Power Source Redundancy List)
This optional object evaluates to a list of Power Source devices that are in the same redundancy
grouping as Power Source device under which this object is defined. A redundancy grouping is a
group of power supplies that together provide redundancy. For example, on a system that contains
two power supplies that each could independently power the system, both power supplies would be
part of the same redundancy group. This is used in conjunction with the Power Source State values
specified by the _PIF object.
The entries should be in the format of a fully qualified ACPI namespace path.
Arguments:
None
Version 6.0 585