cons.h revision 12675 
1/*
2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1991 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
8 * Science Department.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	from: @(#)cons.h	7.2 (Berkeley) 5/9/91
39 *	$Id: cons.h,v 1.11 1995/09/10 21:34:50 bde Exp $
40 */
41
42#ifndef _MACHINE_CONS_H_
43#define _MACHINE_CONS_H_ 1
44
45struct consdev;
46typedef	void	cn_probe_t __P((struct consdev *));
47typedef	void	cn_init_t __P((struct consdev *));
48typedef	int	cn_getc_t __P((dev_t));
49typedef	int	cn_checkc_t __P((dev_t));
50typedef	void	cn_putc_t __P((dev_t, int));
51
52#ifdef KERNEL
53/*
54 * XXX public functions in drivers should be declared in headers produced
55 * by `config', not here.
56 */
57cn_probe_t	pccnprobe;
58cn_init_t	pccninit;
59cn_getc_t	pccngetc;
60cn_checkc_t	pccncheckc;
61cn_putc_t	pccnputc;
62
63cn_probe_t	sccnprobe;
64cn_init_t	sccninit;
65cn_getc_t	sccngetc;
66cn_checkc_t	sccncheckc;
67cn_putc_t	sccnputc;
68
69cn_probe_t	siocnprobe;
70cn_init_t	siocninit;
71cn_getc_t	siocngetc;
72cn_checkc_t	siocncheckc;
73cn_putc_t	siocnputc;
74#endif /* KERNEL */
75
76struct consdev {
77	cn_probe_t	*cn_probe;
78				/* probe hardware and fill in consdev info */
79	cn_init_t	*cn_init;
80				/* turn on as console */
81	cn_getc_t	*cn_getc;
82				/* kernel getchar interface */
83	cn_checkc_t	*cn_checkc;
84				/* kernel "return char if available" interface */
85	cn_putc_t	*cn_putc;
86				/* kernel putchar interface */
87	struct	tty *cn_tp;	/* tty structure for console device */
88	dev_t	cn_dev;		/* major/minor of device */
89	short	cn_pri;		/* pecking order; the higher the better */
90};
91
92/* values for cn_pri - reflect our policy for console selection */
93#define	CN_DEAD		0	/* device doesn't exist */
94#define CN_NORMAL	1	/* device exists but is nothing special */
95#define CN_INTERNAL	2	/* "internal" bit-mapped display */
96#define CN_REMOTE	3	/* serial interface with remote bit set */
97
98/* XXX */
99#define	CONSMAJOR	0
100
101#ifdef KERNEL
102extern	struct consdev constab[];
103extern	struct consdev *cn_tab;
104extern	struct tty *cn_tty;
105extern	int cons_unavail;
106
107struct proc; struct uio;
108
109/* other kernel entry points */
110extern void cninit(void);
111extern void cninit_finish(void);
112extern int cngetc(void);
113extern int cncheckc(void);
114extern void cnputc(int);
115extern int pg(const char *, ...);
116
117#endif /* KERNEL */
118#endif /* _MACHINE_CONS_H_ */
119