ACPI(4)                 NetBSD Kernel Interfaces Manual                ACPI(4)

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 pro-
     vides 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 debug-
                                     ging.

        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 acpi:
     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 graph-
     ics 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)

     ACPI specification, http://www.acpi.info/.

     Intel ACPI CA (Component Architecture),
     http://developer.intel.com/technology/iapc/acpi/.

HISTORY
     The acpi driver appeared in NetBSD 1.6.

BUGS
     Most of the ACPI power management functionalities are not implemented.

NetBSD 5.1                    September 21, 2008                    NetBSD 5.1

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