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Diffstat (limited to 'share/man/man4/wd.4')
| -rw-r--r-- | share/man/man4/wd.4 | 82 |
1 files changed, 54 insertions, 28 deletions
diff --git a/share/man/man4/wd.4 b/share/man/man4/wd.4 index 7b7794ea424..d26c9ebeb41 100644 --- a/share/man/man4/wd.4 +++ b/share/man/man4/wd.4 @@ -1,44 +1,70 @@ -.\" $OpenBSD: wd.4,v 1.3 1999/07/09 13:35:48 aaron Exp $ +.\" $OpenBSD: wd.4,v 1.4 1999/07/21 23:57:55 aaron Exp $ +.\" $NetBSD: wd.4,v 1.4 1999/04/25 00:00:05 mjl Exp $ .\" -.\" Copyright (c) 1998, Jason Downs. All rights reserved. +.\" +.\" Copyright (c) 1994 James A. Jegers +.\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS -.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, -.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. +.\" 2. The name of the author may not be used to endorse or promote products +.\" derived from this software without specific prior written permission +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd July 12, 1998 -.Dt WD 4 +.Dd October 15, 1998 +.Dt WD 4 .Os .Sh NAME -.Nm wd -.Nd ST506/ESDI/IDE disk driver +.Nm wd +.Nd WD100x compatible hard disk driver .Sh SYNOPSIS -.Cd "wd* at wdc?" +.Cd "wd* at wdc? channel ? drive ? flags 0x0000" +.Cd "wd* at pciide? channel ? drive ? flags 0x0000" .Sh DESCRIPTION The -.Nm wd -driver provides support for random access disk drives, using standard -ST506/ESDI/IDE controllers. -.Sh FILES -.Xr /dev/wd* -.Xr /dev/rwd* +.Nm +driver supports hard disks which emulate the Western Digital WD100x. +This includes standard MFM, RLL, ESDI, IDE, and EIDE drives. +.Pp +The +.Cm flags +are used only with controllers that support DMA operations and +mode settings (like some +.Xr pciide 4 +controllers). +The lowest order (right-most) nibble of the +.Cm flags +define the PIO mode to use. The next four bits indicate the DMA mode and the +third nibble the UltraDMA mode. +.Pp +For each set of four bits, the 3 lower bits define the mode to use +and the last bit must be set to 1 for this setting to be used. +For DMA and UltraDMA, 0xf (1111) means +.Dq disable . +For example, a +.Cm flags +value of 0x0fac (1111 1010 1100) +means +.Do +use PIO mode 4, DMA mode 2, disable UltraDMA +.Dc . +The special setting 0x0000 means +.Dq use whatever the drive claims to support . .Sh SEE ALSO .Xr intro 4 , +.Xr pciide 4 , +.Xr scsi 4 , .Xr wdc 4 |