usr/src/sys/hp300/dev/ppiioctl.h

/*
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)ppiioctl.h  8.1 (Berkeley) %G%
 */

#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)