7fe44daeda
Spell diskcontroller as disk controller. There is no more CMD640 option. bad144 got axed. Reflect change. Contract the /dev entries to one /dev/wd* entry which we call wd device nodes to reflect the merger of character and block devices. Add small line to NOTES stating that wd will some be replaced completely by ata/ad. Suggested by: bde
88 lines
3.3 KiB
Groff
88 lines
3.3 KiB
Groff
.\"
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.\" Copyright (c) 1994 Wilko Bulte
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software withough specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 31, 1994
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.Dt WD 4 i386
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.Os FreeBSD
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.Sh NAME
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.Nm wd
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.Nd
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Generic WD100x/IDE disk controller driver
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.Sh SYNOPSIS
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.Cd "device wdc0 at isa? port IO_WD1 irq 14" Op flags Ar flags
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.Cd device wd0 at wdc0 drive 0
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.Cd "device wd1 at wdc0 drive 1" Op flags Ar flags
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.Sh DESCRIPTION
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This driver provides access to disks connected to controllers that emulate
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the Western Digital WD100x series. This range of controllers includes WD1003
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type ST412 controllers, WD1007 ESDI controllers and also the generic IDE
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controllers found on most motherboards.
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.Pp
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Your controller documentation is usually quick to point out any WD100x
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compatibility.
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.Pp
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You can convey a number of hints and instructions to the driver using
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the
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.Ar flags
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parameter.
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.Pp
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For each drive there are six bit-fields encoded in a 16 bit integer:
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.Bl -tag -width 0x0000 -offset 1c
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.It 0x8000
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Test and use the 32bit transfer capability of the drive.
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.It 0x4000
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If drive looks like it's coming out of sleep mode, assume it's
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confused and reinitialize it.
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.It 0x2000
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Probe for and use the bus-mastering DMA capabilities of modern
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PCI chipsets.
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.It 0x1000
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Use LBA addressing instead of the default CHS addressing.
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.It 0x0f00
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Force number of heads to ((flags & 0xf00)>>8), recalculate number
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of cylinders to match.
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.It 0x00ff
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Test and use multi-sector transfer mode of this drive, max number of
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sectors attempted is (flags & 0x00ff).
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.El
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.Pp
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The flags can be specified on the line for the drive as a 16 bit int,
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or on the controller line as a 32 bit int, where the top 16 bit is
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relevant to the highest numbered drive.
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.Sh FILES
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.Bl -tag -width Pa -compact
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.It Pa /dev/wd*
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wd device nodes
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.It Pa /sys/i386/conf/GENERIC
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sample generic kernel config file for (a.o.) wd based systems
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.It Pa /sys/i386/isa/wd.c
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driver source
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.El
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.Sh NOTES
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This driver will soon be completely replaced by the ata and ad drivers.
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