91 lines
2.6 KiB
Groff
91 lines
2.6 KiB
Groff
.\" Copyright (c) 1995
|
|
.\" Peter Dufault, All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\"
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 2, 1995
|
|
.Dt PT 4
|
|
.Os FreeBSD
|
|
.Sh NAME
|
|
.Nm pt
|
|
.Nd SCSI processor type driver
|
|
.Sh SYNOPSIS
|
|
.Cd device pt
|
|
.Cd device pt1 at scbus0 target 3 unit 0
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for a
|
|
.Tn SCSI
|
|
processor type device. These are usually scanners and other
|
|
devices using the
|
|
.Tn SCSI
|
|
link as a communication interface with device
|
|
specific commands embedded in the data stream.
|
|
.Pp
|
|
A
|
|
.Tn SCSI
|
|
adapter must be separately configured into the system
|
|
before this driver can be used.
|
|
.Pp
|
|
This device supports
|
|
.Xr read 2
|
|
and
|
|
.Xr write 2 ,
|
|
and the
|
|
.Xr ioctl 2
|
|
calls described below.
|
|
.Sh IOCTLS
|
|
.Bl -tag -width 012345678901234
|
|
The following
|
|
.Xr ioctl 2
|
|
calls are supported by the
|
|
.Nm
|
|
driver. They are defined in the header file
|
|
.Aq Pa sys/ptio.h .
|
|
.Pp
|
|
.It PTIOCGETTIMEOUT
|
|
This ioctl allows userland applications to fetch the current
|
|
.Nm
|
|
driver read and write timeout. The value returned is in seconds.
|
|
.It PTIOCSETTIMEOUT
|
|
This ioctl allows userland applications to set the current
|
|
.Nm
|
|
driver read and write timeouts. The value should be in seconds.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width /dev/ptQQQ -compact
|
|
.It Pa /dev/pt Ns Ar N
|
|
the
|
|
.No Ar N Ns th processor device.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr scsi 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver appeared in
|
|
.Fx 2.1 .
|