1.\" $NetBSD: pciide.4,v 1.13 1999/12/15 22:07:33 abs Exp $ 2.\" 3.\" Copyright (c) 1998 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 the University of 16.\" California, Berkeley and its contributors. 17.\" 4. Neither the name of the University nor the names of its contributors 18.\" may be used to endorse or promote products derived from this software 19.\" without specific prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33 34.Dd October 15, 1998 35.Dt pciide 4 36.Os 37.Sh NAME 38.Nm pciide 39.Nd PCI IDE disk controllers driver 40.Sh SYNOPSIS 41.Cd "pciide* at pci? dev ? function ? flags 0x0000" 42.Cd "pciide* at pnpbios? index ?" 43.Cd "options PCIIDE_CMD064x_DISABLE" 44.Sh DESCRIPTION 45The 46.Nm pciide 47driver supports the PCI IDE controllers as specified in the 48"PCI IDE controller specification, revision 1.0" draft, and provides the core 49functions for the 50.Nm wd 51and 52.Nm atapi 53drivers. This driver include specific, enhanced support for the CMD Tech 54PCI0640 controller, and IDE DMA/Ultra-DMA support for the following 55controllers: 56.Bl -dash -compact -offset indent 57.It 58Acer labs M5229 IDE Controller 59.It 60CMD Tech PCI0643 and PCI0646 IDE Controllers 61.It 62Contaq Microsystems/Cypress CY82C693 IDE Controller 63.It 64Intel PIIX, PIIX3 and PIIX4 IDE Controllers 65.It 66Intel 82801 (ICH/ICH0) IDE Controllers 67.It 68Promise PDC20246 (Ultra/33) and PDC20262 (Ultra/66) PCI IDE controllers 69.It 70Silicon Integrated System 5597/5598 IDE controller 71.It 72VIA Technologies VT82C586 and VT82C586A IDE Controllers 73.El 74Some of these controllers are only available in multifunction PCI chips. 75.Pp 76The 0x0001 flag forces the 77.Nm 78driver to use DMA when there is no explicit DMA mode setting support for 79the controller but DMA is present. If the BIOS didn't set up the controller 80properly, this can cause a machine hang. 81 82.Sh BUGS 83There's no way to reliably know if a PCI064x controller is enabled or not. 84If the driver finds a PCI064x, it will assume it is enabled unless the 85PCIIDE_CMD064x_DISABLE is specified in the kernel config file. 86This will be a problem only if the controller has been disabled in the BIOS 87and another controller has been installed and uses the ISA legacy I/O ports 88and interrupts. 89.Pp 90The timings used for the PIO and DMA modes for controllers listed above 91are for a PCI bus running at 30 or 33 Mhz. This driver may not 92work properly on overclocked systems. 93 94.Sh SEE ALSO 95.Xr intro 4 , 96.Xr pci 4 , 97.Xr pnpbios 4 , 98.Xr scsi 4 , 99.Xr wd 4 , 100.Xr wdc 4 101