Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
Name Description Heading
_SBS Smart Battery Subsystem – returns the subsystem
Section 10.1.3 page 566
configuration.
_SCP Set Cooling Policy – sets the cooling policy (active or passive). Section 11.4.13 page 615
_SDD Set Device Data – sets data for a SATA device. Section 9.8.3.3.1 page 514
_SEG Segment – returns a device’s PCI Segment Group number. Section 6.5.6 page 385
_SHL Set Hardware Limit – sets the hardware limit enforced by the Section 10.4.6 page 590
Power Meter.
_SHR Sharable – interrupt share status, resource descriptor field. Section 19.2.8 page 778
_SI System Indicators – predefined scope. Section 5.3.1 page 214
_SIZ Size – DMA transfer size, resource descriptor field. Section 19.2.8 page 778
_SLI
_SLV
_SPD
System Locality Information – returns a list of NUMA system
localities.
Slave Mode – Slave mode setting for a SerialBus connection,
resource descriptor field.
Set Post Device – sets which video device will be posted at
boot.
Section 6.2.15 page 325
Section 19.6 page 809
Section B.3.5 page 975
_SPE Connection Speed – Connection speed for a SerialBus Section 19.6 page 809
connection, resource descriptor field
_SRS Set Resource Settings – sets a device’s resource allocation. Section 6.2.16 page 328
_SRT Set Real Time – Sets the current time to a Time and Alarm
Control Method Device.
Section 9.18.4 page 543
_SRV IPMI Spec Revision. See the Intelligent Platform
Management Interface Specification at “Links to ACPI-Related
Documents” (http://uefi.org/acpi) under the heading "Server
Platform Management Interface Table".
_SST System Status – sets the system status indicator. Section 9.1.1 page 497
_STA
Status – (1) returns the current status of a device.
(2) Returns the current on or off state of a Power Resource.
Section 6.3.7
Section 7.2.4
page 341
page 393
_STB Stop Bits - Number of stop bits used in a UART SerialBus Section 19.6 page 809
connection, resource descriptor field
_STM Set Timing Mode – sets an IDE controller transfer timings. Section 9.8.2.1.2 page 512
_STP Set Expired Timer Wake Policy – sets expired timer policies of Section 9.18.7 page 545
the wake alarm device.
_STR String – returns a device’s description string. Section 6.1.10 page 293
_STV Set Timer Value – set timer values of the wake alarm device. Section 9.18.8 page 546
_SUB Supplies OSPM with the device's Subsystem ID. Optional. Section 6.1.9 page 292
_SUN Slot User Number – returns the slot unique ID number. Section 6.1.11 page 293
_SWS System Wake Source – returns the source event that caused Section 7.4.3 page 414
the system to wake.
_T_x Temporary – reserved for use by ASL compilers. Section 19.3.1.1 page 785
_TC1
Thermal Constant 1 – returns TC1 for the passive cooling
formula.
Section 11.4.14 page 618
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