sys/i386/i386/cons.h

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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.
 *
 *      from: @(#)cons.h        7.2 (Berkeley) 5/9/91
 *      $Id$
 */


struct consdev {
        int     (*cn_probe)();  /* probe hardware and fill in consdev info */
        int     (*cn_init)();   /* turn on as console */
        int     (*cn_getc)();   /* kernel getchar interface */
        int     (*cn_putc)();   /* kernel putchar interface */
        struct  tty *cn_tp;     /* tty structure for console device */
        dev_t   cn_dev;         /* major/minor of device */
        short   cn_pri;         /* pecking order; the higher the better */
};

/* values for cn_pri - reflect our policy for console selection */
#define CN_DEAD         0       /* device doesn't exist */
#define CN_NORMAL       1       /* device exists but is nothing special */
#define CN_INTERNAL     2       /* "internal" bit-mapped display */
#define CN_REMOTE       3       /* serial interface with remote bit set */

/* XXX */
#define CONSMAJOR       0

#ifdef KERNEL
extern  struct consdev constab[];
extern  struct consdev *cn_tab;
extern  struct tty *cn_tty;
#endif