2 * Copyright (c) 1988 University of Utah.
3 * Copyright (c) 1991 The Regents of the University of California.
6 * This code is derived from software contributed to Berkeley by
7 * the Systems Programming Group of the University of Utah Computer
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
38 * from: @(#)cons.h 7.2 (Berkeley) 5/9/91
42 #ifndef _MACHINE_CONS_H_
43 #define _MACHINE_CONS_H_
46 typedef void cn_probe_t(struct consdev *);
47 typedef void cn_init_t(struct consdev *);
48 typedef void cn_term_t(struct consdev *);
49 typedef int cn_getc_t(struct consdev *);
50 typedef int cn_checkc_t(struct consdev *);
51 typedef void cn_putc_t(struct consdev *, int);
52 typedef void cn_dbctl_t(struct consdev *, int);
56 /* probe hardware and fill in consdev info */
58 /* turn on as console */
60 /* turn off as console */
62 /* kernel getchar interface */
63 cn_checkc_t *cn_checkc;
64 /* kernel "return char if available" interface */
66 /* kernel putchar interface */
68 /* debugger control interface */
69 struct tty *cn_tp; /* tty structure for console device */
70 short cn_pri; /* pecking order; the higher the better */
71 void *cn_arg; /* drivers method argument */
72 int cn_unit; /* some drivers prefer this */
73 char cn_name[SPECNAMELEN + 1]; /* console (device) name */
76 /* values for cn_pri - reflect our policy for console selection */
77 #define CN_DEAD 0 /* device doesn't exist */
78 #define CN_LOW 1 /* device is a last restort only */
79 #define CN_NORMAL 2 /* device exists but is nothing special */
80 #define CN_INTERNAL 3 /* "internal" bit-mapped display */
81 #define CN_REMOTE 4 /* serial interface with remote bit set */
84 extern int cons_unavail;
86 #define CONS_DRIVER(name, probe, init, term, getc, checkc, putc, dbctl) \
87 static struct consdev name##_consdev = { \
88 probe, init, term, getc, checkc, putc, dbctl \
90 DATA_SET(cons_set, name##_consdev)
92 /* Other kernel entry points. */
94 void cninit_finish(void);
95 int cnadd(struct consdev *);
96 void cnremove(struct consdev *);
97 void cnselect(struct consdev *);
105 #endif /* !_MACHINE_CONS_H_ */