.\"	$NetBSD: geodeide.4,v 1.2 2004/07/30 23:12:16 rumble Exp $
.\"
.\" Copyright (c) 2004 Manuel Bouyer.
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.Dd July 30, 2004
.Dt GEODEIDE 4
.Os
.Sh NAME
.Nm geodeide
.Nd AMD Geode IDE disk controllers driver
.Sh SYNOPSIS
.Cd "geodeide* at pci? dev ? function ? flags 0x0000"
.Sh DESCRIPTION
The
.Nm
driver supports the AMD Geode CS5530A and SC1100 IDE controllers,
and provides the interface with the hardware for the
.Xr ata 4
driver.
.Pp
The 0x0002 flag forces the
.Nm
driver to disable DMA on chipsets for which DMA would normally be
enabled.
This can be used as a debugging aid, or to work around
problems where the IDE controller is wired up to the system incorrectly.
.Sh SEE ALSO
.Xr ata 4 ,
.Xr atapi 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr pciide 4 ,
.Xr wd 4 ,
.Xr wdc 4
.Sh BUGS
The SC1100 controller requires 4-byte aligned data transfers and
cannot handle transfers of exactly 64 kilobytes.