/*      $NetBSD: parioctl.h,v 1.7 2005/12/11 12:16:28 christos Exp $    */

/*
* Copyright (c) 1990 The Regents of the University of California.
* 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.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*      @(#)ppiioctl.h  7.2 (Berkeley) 12/16/90
*/

#ifndef _IOCTL_
#include <sys/ioctl.h>
#endif

struct parparam {
       int     burst;  /* chars to send/recv in one call */
       int     timo;   /* timeout: -1 blocking, 0 non-blocking, >0 msec */
       int     delay;  /* delay between polls (msec) */
};

#define PAR_BLOCK       -1
#define PAR_NOBLOCK     0

/* default values */
#define PAR_BURST       1024
#define PAR_TIMO        PAR_BLOCK
#define PAR_DELAY       10

/* limits */
#define PAR_BURST_MIN   1
#define PAR_BURST_MAX   1024
#define PAR_DELAY_MIN   0
#define PAR_DELAY_MAX   30000

#define PARIOCSPARAM    _IOW('P', 0x1, struct parparam)
#define PARIOCGPARAM    _IOR('P', 0x2, struct parparam)