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cons.h revision 1.5 
      1 /* NetBSD $Id: cons.h,v 1.5 1994/06/27 19:49:47 cgd Exp $ */
      2 /*
      3  * Copyright (c) 1988 University of Utah.
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  * from: Utah $Hdr: cons.h 1.6 92/01/21$
     40  *
     41  *	@(#)cons.h	8.1 (Berkeley) 6/10/93
     42  */
     43 
     44 struct consdev {
     45 	int	(*cn_probe)();	/* probe hardware and fill in consdev info */
     46 	int	(*cn_init)();	/* turn on as console */
     47 	int	(*cn_getc)();	/* kernel getchar interface */
     48 	int	(*cn_putc)();	/* kernel putchar interface */
     49 	dev_t	cn_dev;		/* major/minor of device */
     50 	short	cn_pri;		/* pecking order; the higher the better */
     51 };
     52 
     53 /* values for cn_pri - reflect our policy for console selection */
     54 #define	CN_DEAD		0	/* device doesn't exist */
     55 #define CN_NORMAL	1	/* device exists but is nothing special */
     56 #define CN_INTERNAL	2	/* "internal" bit-mapped display */
     57 #define CN_REMOTE	3	/* serial interface with remote bit set */
     58 
     59 /* XXX */
     60 #define	CONSMAJOR	0
     61 
     62 #ifdef KERNEL
     63 extern	struct consdev constab[];
     64 extern	struct consdev *cn_tab;
     65 #endif
     66