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SUPERIO(4)		    Kernel Interfaces Manual		    SUPERIO(4)

NAME
       superio -- Super	I/O controller and bus driver

SYNOPSIS
       To  compile  this  driver  into the kernel, place the following line in
       your kernel configuration file:

	     device superio

       Alternatively, to load the driver as a module at	boot time,  place  the
       following line in loader.conf(5):

	     superio_load="YES"

DESCRIPTION
       Super  I/O is an	I/O controller that combines various low-bandwidth de-
       vices that can be functionally unrelated	otherwise.   A	typical	 Super
       I/O can contain devices such as

          a floppy disk controller
          a parallel port
          a serial port
          a PS/2 mouse	and keyboard controller
          a hardware monitoring controller
          a watchdog timer
          a controller	for general purpose input-output

       The  superio  driver provides support for devices residing in the Super
       I/O controller that can only be accessed	or discovered using  the  con-
       troller's  interface.   Some of the Super I/O devices have standardized
       interfaces.  Such devices either	use  well-known	 legacy	 resources  or
       they  are  advertised  via ACPI or both.	 They can be configured	either
       using ISA bus hints  or	they  are  auto-configured  by	acpi(4).   The
       superio	driver	is not designed	to interact with that kind of devices.
       They can	be handled by their respective drivers without	any  knowledge
       of  the	Super  I/O specifics.  For instance, fdc(4) provides access to
       the floppy disk controller.

       There are other Super I/O devices that do not have any standardized in-
       terface.	 Drivers for those devices can be written using	facilities  of
       the superio driver.

       The  driver itself attaches to the ISA bus as all supported controllers
       are accessed via	LPC I/O	ports.

       The superio driver is unusual as	it is both a controller	driver	for  a
       variety of Super	I/O controllers	and a bus driver for supported devices
       in those	controllers.

HARDWARE
       The  superio  driver supports a multitude of Super I/O controllers pro-
       duced by	Nuvoton, formerly known	as Winbond, and	ITE, namely:

          Fintek F81803
          Fintek F81865
          Nuvoton NCT5104D/NCT6102D/NCT6106D rev. A and B+
          Nuvoton NCT5585D
          Nuvoton NCT6116D
          Nuvoton NCT6775
          Nuvoton NCT6776
          Nuvoton NCT6779
          Nuvoton NCT6791
          Nuvoton NCT6792
          Nuvoton NCT6793
          Nuvoton NCT6795
          Nuvoton NCT6796D-E
          Winbond 83627HF/F/HG/G/S/THF/EHF/DHG/UHG/DHG-P
          Winbond 83637HF
          Winbond 83667HG/HG-B
          Winbond 83687THF
          Winbond 83697HF/UG

SEE ALSO
       superio(9)

HISTORY
       The superio driver was written by Andriy	Gapon <avg@FreeBSD.org>.

FreeBSD	14.3		       October 11, 2019			    SUPERIO(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=superio&sektion=4&manpath=FreeBSD+14.3-RELEASE+and+Ports>

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