NetBSD-5.0.2/share/man/man4/man4.i386/gscpcib.4

.\" $NetBSD: gscpcib.4,v 1.3 2005/09/27 19:07:17 wiz Exp $
.\"	$OpenBSD: gscpcib.4,v 1.4 2005/01/20 22:08:01 jmc Exp $
.\"
.\" Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\"
.Dd September 27, 2005
.Dt GSCPCIB 4 i386
.Os
.Sh NAME
.Nm gscpcib
.Nd National Semiconductor Geode SC1100 PCI-ISA bridge
.Sh SYNOPSIS
.Cd "gscpcib* at pci?"
.Cd "isa* at gscpcib?"
.Cd "gpio* at gscpcib?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the National Semiconductor Geode SC1100
System-on-Chip
.Tn PCI-ISA
bridge.
This device is a
.Tn PCI-ISA
bridge, but with some additional sub-devices.
Besides the core
.Xr pcib 4
functionality, the
.Nm
driver provides support for the
.Tn GPIO
interface of this device.
.Pp
The device has 64 I/O pins which can be accessed through the
.Xr gpio 4
framework.
The
.Xr gpioctl 8
program provides a convenient way to manipulate these pins from userland.
.Sh SEE ALSO
.Xr gpio 4 ,
.Xr intro 4 ,
.Xr isa 4 ,
.Xr pci 4 ,
.Xr pcib 4 ,
.Xr gpioctl 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 3.6
and
.Nx 4.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Alexander Yurchenko Aq grange@openbsd.org
and was ported to
.Nx
by
.An Jared D. McNeill Aq jmcneill@NetBSD.org .