FreeBSD/Linux Kernel Cross Reference
sys/dev/gpib/ppiio.h

     /*      $NetBSD: ppiio.h,v 1.2 2003/08/07 16:30:56 agc Exp $    */
     
     /*
      * Copyright (c) 1990, 1993
      *      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  8.1 (Berkeley) 6/10/93
     */
    
    #ifndef _IOCTL_
    #include <sys/ioctl.h>
    #endif
    
    struct ppiparam {
            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 PPI_BLOCK       -1
    #define PPI_NOBLOCK     0
    
    /* default values */
    #define PPI_BURST       1024
    #define PPI_TIMO        PPI_BLOCK
    #define PPI_DELAY       10
    
    /* limits */
    #define PPI_BURST_MIN   1
    #define PPI_BURST_MAX   1024
    #define PPI_DELAY_MIN   0
    #define PPI_DELAY_MAX   30000
    
    #define PPIIOCSPARAM    _IOW('P', 0x1, struct ppiparam)
    #define PPIIOCGPARAM    _IOR('P', 0x2, struct ppiparam)
    #define PPIIOCSSEC      _IOW('P', 0x3, int)

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