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parioctl.h revision 1.2 
      1 /*
      2  * Copyright (c) 1990 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     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  * 3. Neither the name of the University nor the names of its contributors
     14  *    may be used to endorse or promote products derived from this software
     15  *    without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  *
     29  *	from: @(#)ppiioctl.h	7.2 (Berkeley) 12/16/90
     30  *	$NetBSD: parioctl.h,v 1.2 2003/08/07 16:30:27 agc Exp $
     31  */
     32 
     33 #ifndef _IOCTL_
     34 #include <sys/ioctl.h>
     35 #endif
     36 
     37 struct parparam {
     38 	int	burst;	/* chars to send/recv in one call */
     39 	int	timo;	/* timeout: -1 blocking, 0 non-blocking, >0 msec */
     40 	int	delay;	/* delay between polls (msec) */
     41 };
     42 
     43 #define PAR_BLOCK	-1
     44 #define PAR_NOBLOCK	0
     45 
     46 /* default values */
     47 #define	PAR_BURST	1024
     48 #define PAR_TIMO	PAR_BLOCK
     49 #define PAR_DELAY	10
     50 
     51 /* limits */
     52 #define	PAR_BURST_MIN	1
     53 #define	PAR_BURST_MAX	1024
     54 #define PAR_DELAY_MIN	0
     55 #define PAR_DELAY_MAX	30000
     56 
     57 #define PARIOCSPARAM	_IOW('P', 0x1, struct parparam)
     58 #define PARIOCGPARAM	_IOR('P', 0x2, struct parparam)
     59