166 lines
5.1 KiB
Groff
166 lines
5.1 KiB
Groff
.\" Copyright (c) 1997
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.\" John-Mark Gurney. 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. Neither the name of the author nor the names of any co-contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY John-Mark Gurney 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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.\"
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.Dd January 29, 1997
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.Dt SCSICONF 9
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.Os FreeBSD
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.Sh NAME
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.Nm scsiconf
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.Nd define how certain scsi devices behave
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.Sh SYNOPSIS
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.Fd #include <scsi/scsi_all.h>
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.Fd #include <scsi/scsiconf.h>
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.Dv static struct scsidevs knowndevs[] =
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.Em ...
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.Sh DESCRIPTION
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The
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.Dv struct scsidevs knowndevs
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contains information about scsi devices that are known to have problems
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or require special flags.
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.Bd -literal -offset indent
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struct scsidevs {
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u_int32_t type;
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u_int32_t driver; /* normally the same as type */
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boolean removable;
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char *manufacturer;
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char *model;
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char *version;
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char *devname;
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char flags; /* see below */
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u_int16_t quirks;
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void *devmodes;
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};
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#define SC_SHOWME ...
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#define SC_ONE_LU ...
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#define SC_MORE_LUS ...
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.Ed
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.Pp
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Matching is based first on device type, then on the manufacturer, model,
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and revision strings returned by the device. The returned strings are
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fixed lengths of 8, 16 and 4 bytes respectively. In the matching
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pattern, a question mark
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.Pq So ? Sc
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matches any single character and a trailing
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asterisk
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.Pq So * Sc
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matches remaining characters. For patterns shorter
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than their respective fields, trailing spaces are implied.
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.Bl -tag -width manufacturer
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.It Va type
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This is the type of device that is returned by the device. Look in
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.Pa /sys/scsi/scsi_all.h
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for the list of available types
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.Pq look for the Dv T_xxx macros .
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.It Va driver
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This specifies the driver to assign to the devices that match this entry.
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It usually has the same value as
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.Va type ,
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unless a particular device is lying about its identity.
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.It Va removable
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This specifies wether the device is removable
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.Pq Dv T_REMOV
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or fixed
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.Pq Dv T_FIXED .
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.It Va manufacturer
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This is the string to match against the vendor identification returned by the
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device.
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.It Va model
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This is the string to match against the product identification returned by the
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device.
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.It Va version
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This is the string to match against the product revision level returned by the
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device.
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.It Va devname
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The device name of the driver to attach to this scsi device.
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.It Va flags
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This is set to possible flags that are use when probing this device.
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The values are:
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.Bl -tag -width "SC_MORE_LUSXX" -compact
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.It Dv SC_SHOWME
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Be verbose about the decisions made when considering this entry at
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device probe time.
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.It Dv SC_ONE_LU
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Probe only the first LUN if device matches this entry; used for broken
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devices that erroneously respond on more than a single LUN.
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.It Dv SC_MORE_LUS
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The opposite, probe for all possible LUNs. This is the default, but
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can be used if a quirk entry is required for other purposes, like
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overriding a type-specific default that would restrict probing to only
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one LUN.
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.El
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.It Va quirks
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This field specifies device specific flags. See the device-specific man pages in
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section 9 for more info on these flags.
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.It Va devmodes
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This is a pointer to a device specific struct. Currently only used by
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.Xr st 4
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to set initial modes.
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.El
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.Sh FILES
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.Bl -tag -width /sys/scsi/scsiconf.c -compact
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.It Pa /sys/scsi/scsi_all.h
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Lists the possible scsi devices
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.It Pa /sys/scsi/scsiconf.h
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Lists possible flags for both
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.Va flags
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and
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.Va quirks
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.It Pa /sys/scsi/scsiconf.c
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Contains the
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.Va knowndevs
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data structure
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.El
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.Sh SEE ALSO
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.Xr cd 4 ,
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.Xr ch 4 ,
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.Xr pt 4 ,
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.Xr scsi 4 ,
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.Xr sd 4 ,
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.Xr st 4 ,
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.Xr su 4 ,
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.Xr uk 4 ,
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.Xr cd 9 ,
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.Xr sd 9 ,
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.Xr st 9
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.Sh HISTORY
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The
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.Nm
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manual page first appeared in
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.Fx 3.0 .
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.Sh AUTHOR
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This
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manual page was written by John-Mark Gurney
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.Aq gurney_j@efn.org .
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.Sh BUGS
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This isn't a complete description of what
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.Pa /sys/scsi/scsiconf.c
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contains, but the remaining functions there are internal to the SCSI
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subsystem and thus of little interest for driver writers.
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