1.\" $NetBSD: acardide.4,v 1.4 2009/10/19 18:41:08 bouyer Exp $ 2.\" 3.\" Copyright (c) 2003 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.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24.\" 25.Dd October 24, 2003 26.Dt ACARDIDE 4 27.Os 28.Sh NAME 29.Nm acardide 30.Nd acard IDE disk controllers driver 31.Sh SYNOPSIS 32.Cd "acardide* at pci? dev ? function ? flags 0x0000" 33.Sh DESCRIPTION 34The 35.Nm 36driver supports the following IDE controllers: 37.Bl -item -offset indent 38.It 39Acard ATP850U Ultra33 40.It 41Acard ATP860 Ultra66 42.It 43Acard ATP860-A Ultra66 44.It 45Acard ATP865-A Ultra100 46.El 47.Pp 48It provides the interface with the hardware for the 49.Xr ata 4 50driver. 51.Pp 52The 0x0002 flag forces the 53.Nm 54driver to disable DMA on chipsets for which DMA would normally be 55enabled. 56This can be used as a debugging aid, or to work around 57problems where the IDE controller is wired up to the system incorrectly. 58.Sh SEE ALSO 59.Xr ata 4 , 60.Xr atapi 4 , 61.Xr intro 4 , 62.Xr pci 4 , 63.Xr pciide 4 , 64.Xr wd 4 , 65.Xr wdc 4 66.Sh BUGS 67The timings used for the PIO and DMA modes for controllers listed above 68are for a PCI bus running at 30 or 33 MHz. 69This driver may not work properly on overclocked systems. 70