NAME
gscpcib —
National Semiconductor Geode
SC1100 PCI-ISA bridge with GPIO
SYNOPSIS
gscpcib* at pci?
isa* at gscpcib?
gpio* at gscpcib?
DESCRIPTION
The
gscpcib driver provides support for the National
Semiconductor Geode SC1100 System-on-Chip PCI-ISA bridge. This device is a
PCI-ISA bridge, but with some additional sub-devices. Besides the core
pcib(4) functionality, the
gscpcib driver provides support for the GPIO interface of
this device.
The device has 64 I/O pins which can be accessed through the
gpio(4) framework. The
gpioctl(8) program provides
a convenient way to manipulate these pins from userland.
SEE ALSO
gpio(4),
i386/intro(4),
isa(4),
pci(4),
pcib(4),
gpioctl(8)
HISTORY
The
gscpcib driver first appeared in
OpenBSD
3.6 and
NetBSD 4.0.
AUTHORS
The
gscpcib driver was written by
Alexander
Yurchenko
<
grange@openbsd.org>
and was ported to
NetBSD by
Jared D.
McNeill
<
jmcneill@NetBSD.org>.