NAME

acpi - Advanced Configuration and Power Interface

SYNOPSIS

acpi0 at mainbus0 acpiacad* at acpi? acpibat* at acpi? acpibut* at acpi? acpiec* at acpi? acpilid* at acpi? acpitz* at acpi? attimer* at acpi? aiboost* at acpi? com* at acpi? fdc* at acpi? hpet* at acpi? joy* at acpi? lpt* at acpi? mpu* at acpi? npx* at acpi? pckbc* at acpi? pcppi* at acpi? sony* at acpi? spic* at acpi? ug* at acpi? vald* at acpi? wss* at acpi? ym* at acpi?

options ACPI_DEBUG options ACPIVERBOSE options ACPI_ACTIVATE_DEV options ACPICA_PEDANTIC options ACPI_DSDT_OVERRIDE

DESCRIPTION

NetBSD provides machine-independent bus support for ACPI devices and includes several ACPI device drivers.

The NetBSD implementation of ACPI integrates Intel's ACPI Component Architecture (aka ACPI-CA) for the OS-independent part. The ACPI-CA provides OS-neutral ACPI functionalities such as ACPI BIOS table support, an ACPI event framework and an AML (ACPI Machine Language) interpreter.

Options:

ACPI_DEBUG
Enable ACPI debugging message outputs.

ACPI_ACTIVATE_DEV
Determine if the ACPI driver should attempt to activate inactive devices. The default is off.

ACPICA_PEDANTIC
Force strict conformance to the ACPI specification in the ACPI-CA. Do not enable this option unless you are debugging.

ACPI_DSDT_OVERRIDE
Force a given DSDT instead of the BIOS-supplied version. Use ACPI_DSDT_FILE to specify a DSDT.

ACPI_DSDT_FILE="filename"
If ACPI_DSDT_FILE is not specified, default to ``dsdt.hex'' in the build directory.

sysctl support

Two sysctl(8) settings are especially relevant for : hw.acpi_supported_states and machdep.acpi_vbios_reset. hw.acpi_supported_states is a list of the supported states (see sysctl(7)). machdep.acpi_vbios_reset defines the handling of the graphics card. The supported values for this are:

0
No attempt to reset the VGA controller is done.

1
Call the VGA BIOS when still in real mode. This can result in direct reboots. In that case, use `2' or vbetool post from the pkgsrc/sysutils/vbetool package.

2
Call the VGA BIOS using the in-kernel x86 emulator.

SUPPORTED DEVICES

NetBSD ACPI supports several machine-dependent and machine-independent devices:

machine-independent devices

acpiacad
ACPI AC adapters.

acpibat
ACPI Control Method Batteries.

acpibut
ACPI power and sleep buttons.

acpiec
ACPI Embedded Controllers.

acpilid
ACPI lid switches.

acpitz
ACPI thermal zones.

attimer
AT Timer.

aiboost
ASUS AI Booster Hardware monitor.

com
NS8250-, NS16450-, and NS16550-based serial ports.

fdc
Floppy disk controllers.

hpet
High Precision Event Timer.

joy
Joystick/Game port interface.

lpt
Standard ISA parallel port interface.

mpu
Roland MPU-401 (compatible) MIDI UART.

pcppi
AT-style speaker sound.

ug
Abit uGuru Hardware monitor.

wss
Windows Sound System-compatible sound cards based on the AD1848 and compatible chips.

ym
Yamaha OPL3-SA2 and OPL3-SA3 audio device driver.

i386-dependent devices

npx
i386 numeric processing extension coprocessor.

pckbc
PC keyboard controllers.

sony
Sony Miscellaneous Controller

spic
Sony programmable I/O controller.

vald
Toshiba Libretto device.

SEE ALSO

acpiacad(4), acpibat(4), acpibut(4), acpiec(4), acpilid(4), acpitz(4), aiboost(4), apm(4), attimer(4), com(4), fdc(4), joy(4), lpt(4), mpu(4), npx(4), pci(4), pckbc(4), pcppi(4), sony(4), spic(4), ug(4), vald(4), wss(4), ym(4), acpidump(8), amldb(8)

HISTORY

The acpi driver appeared in NetBSD1.6.

BUGS

Most of the ACPI power management functionalities are not implemented.