Advanced Configuration and Power Interface Specification

Device Configuration
BUS
PCMCIA
PC CARD
Serial ATA
SMBus
USB Root HUB
USB Ports
SDIO Bus
NVDIMM
Address Encoding
Socket #; 0–First Socket
Socket #; 0–First Socket
SATA Port: High word—Root port #, Low word—port number off of a SATA port
multiplier, or 0xFFFF if no port multiplier attached. (For example, root port 2 would be
0x0002FFFF. If instead a port multiplier had been attached to root port 2, the ports
connected to the multiplier would be encoded 0x00020000, 0x00020001, etc.) The value
0xFFFFFFFF is reserved.
Lowest Slave Address
Only one child of the host controller. It must have an _ADR of 0. No other children or
values of _ADR are allowed.
Port number (1-n)
High word - Slot number (0-First Slot)
Low word - Function number (see SD specification for definitions.)
NFIT Device handle as defined by Section 5.2.25.2 (Memory Device to System Physical
Address Range Mapping Structure)
6.1.2 _CID (Compatible ID)
This optional object is used to supply OSPM with a device’s Plug and Play-Compatible Device ID.
Use _CID objects when a device has no other defined hardware standard method to report its
compatible IDs.
Arguments:
None
Return Value:
An Integer or String containing a single CID or a Package containing a list of CIDs
A _CID object evaluates to either:
• A single Compatible Device ID
• A package of Compatible Device IDs for the device — in the order of preference, highest
preference first.
Each Compatible Device ID must be either:
• A valid HID value (a 32-bit compressed EISA type ID or a string such as “ACPI0004”).
• A string that uses a bus-specific nomenclature. For example, _CID can be used to specify the
PCI ID. The format of a PCI ID string is one of the following:
“PCI\CC_ccss”
“PCI\CC_ccsspp”
“PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss&REV_rr”
“PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss”
“PCI\VEN_vvvv&DEV_dddd&REV_rr”
“PCI\VEN_vvvv&DEV_dddd”
Where:
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