95 lines
2.6 KiB
Groff
95 lines
2.6 KiB
Groff
.\" $Id: uk.4,v 1.6 1996/10/18 20:22:31 julian Exp $
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.\" Copyright (c) 1996
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.\" Julian Elischer <julian@freebsd.org>. 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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.\"
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd October 11, 1993
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.Dt UK 4
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.Os FreeBSD
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.Sh NAME
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.Nm uk
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.Nd scsi user-level driver
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.Sh SYNOPSIS
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.Nm device uk
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.Sh DESCRIPTION
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The
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.Nm uk
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driver provides support for a
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process to address devices on the scsi bus for which there is no configured
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driver.
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.Pp
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In FreeBSD releases prior to 2.1, the first unknown device
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found will be attached as
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.Em uk0
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and the next,
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.Em uk1
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etc.
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Beginning in 2.1 it is possible to specify what uk unit a device should
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come on line as; refer to
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.Xr scsi 4
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for details on kernel configuration.
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.Pp
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A scsi adapter must also be separately configured into the system
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before this driver makes sense.
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.Pp
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.Sh KERNEL CONFIGURATION
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If an count is given that number of
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.Nm
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devices will be configured into the kernel.
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.Pp
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.Sh IOCTLS
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The
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.Nm
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driver has no ioctls of it's own but rather acts as a medium for the
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generic
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.Xr scsi 4
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ioctls. These are described in
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.Em sys/scsiio.h.
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.Sh FILES
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.Bl -tag -width /dev/uk0XXX -compact
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.It Pa /dev/uk[0-255]
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uk{x} is the 'xth'unknown device found.
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.El
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.Sh DIAGNOSTICS
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All
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.Xr scsi 4
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debug ioctls work on
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.Nm
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devices.
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.Sh SEE ALSO
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.Xr sd 4 ,
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.Xr st 4 ,
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.Xr cd 4 ,
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.Xr ch 4 ,
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.Xr su 4 ,
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.Xr scsi 4
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.Sh HISTORY
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The
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.Nm
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driver appeared in 386BSD 0.1.
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