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parioctl.h revision 1.1 
      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. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	from: @(#)ppiioctl.h	7.2 (Berkeley) 12/16/90
     34  *	$Id: parioctl.h,v 1.1 1993/09/02 16:53:40 mw Exp $
     35  */
     36 
     37 #ifndef _IOCTL_
     38 #include <sys/ioctl.h>
     39 #endif
     40 
     41 struct parparam {
     42 	int	burst;	/* chars to send/recv in one call */
     43 	int	timo;	/* timeout: -1 blocking, 0 non-blocking, >0 msec */
     44 	int	delay;	/* delay between polls (msec) */
     45 };
     46 
     47 #define PAR_BLOCK	-1
     48 #define PAR_NOBLOCK	0
     49 
     50 /* default values */
     51 #define	PAR_BURST	1024
     52 #define PAR_TIMO	PAR_BLOCK
     53 #define PAR_DELAY	10
     54 
     55 /* limits */
     56 #define	PAR_BURST_MIN	1
     57 #define	PAR_BURST_MAX	1024
     58 #define PAR_DELAY_MIN	0
     59 #define PAR_DELAY_MAX	30000
     60 
     61 #define PARIOCSPARAM	_IOW('P', 0x1, struct parparam)
     62 #define PARIOCGPARAM	_IOR('P', 0x2, struct parparam)
     63