1.\" Copyright (c) 1995 2.\" Peter Dufault, All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.Dd March 2, 1995 27.Dt PT 4 28.Os 29.Sh NAME 30.Nm pt 31.Nd SCSI processor type driver 32.Sh SYNOPSIS 33.Cd device pt 34.Sh DESCRIPTION 35The 36.Nm 37driver provides support for a 38.Tn SCSI 39processor type device. 40These are usually scanners and other devices using the 41.Tn SCSI 42link as a communication interface with device 43specific commands embedded in the data stream. 44.Pp 45A 46.Tn SCSI 47adapter must be separately configured into the system 48before this driver can be used. 49.Pp 50This device supports 51.Xr read 2 52and 53.Xr write 2 , 54and the 55.Xr ioctl 2 56calls described below. 57.Sh IOCTLS 58The following 59.Xr ioctl 2 60calls are supported by the 61.Nm 62driver. 63They are defined in the header file 64.In sys/ptio.h . 65.Bl -tag -width 012345678901234 66.It PTIOCGETTIMEOUT 67This ioctl allows userland applications to fetch the current 68.Nm 69driver read and write timeout. 70The value returned is in seconds. 71.It PTIOCSETTIMEOUT 72This ioctl allows userland applications to set the current 73.Nm 74driver read and write timeouts. 75The value should be in seconds. 76.El 77.Sh FILES 78.Bl -tag -width /dev/ptQQQ -compact 79.It Pa /dev/pt Ns Ar N 80the 81.Ar N Ns th processor device. 82.El 83.Sh SEE ALSO 84.Xr cam 4 85.Sh HISTORY 86The 87.Nm 88driver appeared in 89.Fx 2.1 . 90