cons.h revision 1.9 
1/*	$NetBSD: cons.h,v 1.9 1995/03/26 20:28:52 jtc Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1990, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 *    must display the following acknowledgement:
22 *	This product includes software developed by the University of
23 *	California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * from: Utah $Hdr: cons.h 1.6 92/01/21$
41 *
42 *	@(#)cons.h	8.1 (Berkeley) 6/10/93
43 */
44
45struct consdev {
46	int	(*cn_probe)();	/* probe hardware and fill in consdev info */
47	int	(*cn_init)();	/* turn on as console */
48	int	(*cn_getc)();	/* kernel getchar interface */
49	int	(*cn_putc)();	/* kernel putchar interface */
50	void	(*cn_pollc)();	/* turn on and off polling */
51	dev_t	cn_dev;		/* major/minor of device */
52	short	cn_pri;		/* pecking order; the higher the better */
53};
54
55/* values for cn_pri - reflect our policy for console selection */
56#define	CN_DEAD		0	/* device doesn't exist */
57#define CN_NORMAL	1	/* device exists but is nothing special */
58#define CN_INTERNAL	2	/* "internal" bit-mapped display */
59#define CN_REMOTE	3	/* serial interface with remote bit set */
60
61/* XXX */
62#define	CONSMAJOR	0
63
64#ifdef _KERNEL
65extern	struct consdev constab[];
66extern	struct consdev *cn_tab;
67
68void	cninit __P((void));
69int	cnopen __P((dev_t, int, int, struct proc *));
70int	cnclose __P((dev_t, int, int, struct proc *));
71int	cnread __P((dev_t, struct uio *, int));
72int	cnwrite __P((dev_t, struct uio *, int));
73int	cnioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
74int	cnselect __P((dev_t, int, struct proc *));
75int	cngetc __P((void));
76int	cnputc __P((int));
77#endif
78