freebsd-dev/share/man/man9/sd.9
1997-03-07 02:53:37 +00:00

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.\" Copyright (c) 1997
.\" John-Mark Gurney. All rights reserved.
.\"
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.\" $Id$
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.Dd February 1, 1997
.Dt SD 9
.Os FreeBSD
.Sh NAME
.Nm sd
.Nd device driver for SCSI subsystem
.Sh DESCRIPTION
Some Type 0
.Pq T_DIRECT
scsi devices don't behave properly when some special scsi options are
negotiated. See the QUIRKS section for info on how to disable some of these
options.
.Sh QUIRKS
Each SCSI device can have problems that the driver needs to work around. See
.Xr scsiconf 9
for more info on adding quirks.
.Bl -tag -width SD_Q_NO_TAGS
.It Dv SD_Q_NO_TAGS
This quirk flags will disable the use of tagged queuing when sending commands to
the drive.
.It Dv SD_Q_NO_SYNC
This will disable synchronous negotiation with this drive.
.It Dv SD_Q_NO_FAST
This will disable fast negotiation with this drive.
.It Dv SD_Q_NO_WIDE
This will disable wide negotiation with this drive.
.El
.Sh FILES
.Bl -tag -width /sys/scsi/scsiconf.h -compact
.It Pa /sys/scsi/scsiconf.h
contains the definition of
.Dv SD_Q_xxx
macros.
.It Pa /sys/scsi/sd.c
files contains actual driver code
.El
.Sh SEE ALSO
.Xr sd 4 ,
.Xr scsiconf 9
.Sh HISTORY
The
.Nm
manual page first appeared in
.Fx 2.2 .
.Sh AUTHOR
This
manual page was written by John-Mark Gurney
.Aq gurney_j@efn.org .