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82 lines
2.5 KiB
Groff
82 lines
2.5 KiB
Groff
.\" $Id: su.4,v 1.10 1997/02/22 13:24:44 peter 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 August 27, 1993
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.Dt SU 4
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.Os FreeBSD
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.Sh NAME
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.Nm su
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.Nd scsi user-level driver
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.Sh SYNOPSIS
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.Cd "pseudo-device su"
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.Sh DESCRIPTION
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The
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.Nm su
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driver provides support for a
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process to address arbitrary locations on the scsi bus. Minor
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numbers are mapped 1:1 to bus:target:lun. The lowest three bits being LUN
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and the next three bits being TARGET. Remaining bits are the bus number.
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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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There are no configuration parameters for the su option. It's either there
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or it's not.
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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/su0-0-0XXXXXXXXXXX -compact
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.It Pa /dev/su[0-9]-[0-7]-[0-7]
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su{x}-{y}-{z} is the su device for the device at bus x, target y, lun z
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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 cd 4 ,
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.Xr scsi 4 ,
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.Xr sd 4 ,
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.Xr ssc 4 ,
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.Xr st 4 ,
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.Xr uk 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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