1.\" $NetBSD: geodeide.4,v 1.2 2004/07/30 23:12:16 rumble Exp $ 2.\" 3.\" Copyright (c) 2004 Manuel Bouyer. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Manuel Bouyer. 16.\" 4. The name of the author may not be used to endorse or promote products 17.\" derived from this software without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd July 30, 2004 31.Dt GEODEIDE 4 32.Os 33.Sh NAME 34.Nm geodeide 35.Nd AMD Geode IDE disk controllers driver 36.Sh SYNOPSIS 37.Cd "geodeide* at pci? dev ? function ? flags 0x0000" 38.Sh DESCRIPTION 39The 40.Nm 41driver supports the AMD Geode CS5530A and SC1100 IDE controllers, 42and provides the interface with the hardware for the 43.Xr ata 4 44driver. 45.Pp 46The 0x0002 flag forces the 47.Nm 48driver to disable DMA on chipsets for which DMA would normally be 49enabled. 50This can be used as a debugging aid, or to work around 51problems where the IDE controller is wired up to the system incorrectly. 52.Sh SEE ALSO 53.Xr ata 4 , 54.Xr atapi 4 , 55.Xr intro 4 , 56.Xr pci 4 , 57.Xr pciide 4 , 58.Xr wd 4 , 59.Xr wdc 4 60.Sh BUGS 61The SC1100 controller requires 4-byte aligned data transfers and 62cannot handle transfers of exactly 64 kilobytes. 63