FreeBSD/Linux Kernel Cross Reference
sys/i386/i386/cons.h
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 * $FreeBSD: src/sys/i386/i386/cons.h,v 1.13.4.1 1999/09/05 08:11:04 peter Exp $
40 */
41
42 #ifndef _MACHINE_CONS_H_
43 #define _MACHINE_CONS_H_ 1
44
45 struct consdev;
46 typedef void cn_probe_t __P((struct consdev *));
47 typedef void cn_init_t __P((struct consdev *));
48 typedef int cn_getc_t __P((dev_t));
49 typedef int cn_checkc_t __P((dev_t));
50 typedef 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 */
57 cn_probe_t pccnprobe;
58 cn_init_t pccninit;
59 cn_getc_t pccngetc;
60 cn_checkc_t pccncheckc;
61 cn_putc_t pccnputc;
62
63 cn_probe_t sccnprobe;
64 cn_init_t sccninit;
65 cn_getc_t sccngetc;
66 cn_checkc_t sccncheckc;
67 cn_putc_t sccnputc;
68
69 cn_probe_t siocnprobe;
70 cn_init_t siocninit;
71 cn_getc_t siocngetc;
72 cn_checkc_t siocncheckc;
73 cn_putc_t siocnputc;
74 #endif /* KERNEL */
75
76 struct 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
102 extern struct consdev constab[];
103 extern struct consdev *cn_tab;
104 extern int cons_unavail;
105
106 struct proc; struct uio;
107
108 /* other kernel entry points */
109 extern void cninit(void);
110 extern void cninit_finish(void);
111 extern int cngetc(void);
112 extern int cncheckc(void);
113 extern void cnputc(int);
114 extern int pg(const char *, ...);
115
116 #endif /* KERNEL */
117 #endif /* _MACHINE_CONS_H_ */
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