1/* $NetBSD: cons.h,v 1.27 2011/02/08 20:20:26 rmind 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. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah $Hdr: cons.h 1.6 92/01/21$
37 *
38 * @(#)cons.h 8.1 (Berkeley) 6/10/93
39 */
40
41#ifndef _SYS_DEV_CONS_H_
42#define _SYS_DEV_CONS_H_
43
44struct consdev {
45 void (*cn_probe) /* probe hardware and fill in consdev info */
46 (struct consdev *);
47 void (*cn_init) /* turn on as console */
48 (struct consdev *);
49 int (*cn_getc) /* kernel getchar interface */
50 (dev_t);
51 void (*cn_putc) /* kernel putchar interface */
52 (dev_t, int);
53 void (*cn_pollc) /* turn on and off polling */
54 (dev_t, int);
55 void (*cn_bell) /* ring bell */
56 (dev_t, u_int, u_int, u_int);
57 void (*cn_halt) /* stop device */
58 (dev_t);
59 void (*cn_flush) /* flush output */
60 (dev_t);
61 dev_t cn_dev; /* major/minor of device */
62 int cn_pri; /* pecking order; the higher the better */
63};
64
65/* values for cn_pri - reflect our policy for console selection */
66#define CN_DEAD 0 /* device doesn't exist */
67#define CN_NULL 1 /* noop console */
68#define CN_NORMAL 2 /* device exists but is nothing special */
69#define CN_INTERNAL 3 /* "internal" bit-mapped display */
70#define CN_REMOTE 4 /* serial interface with remote bit set */
71
72#ifdef _KERNEL
73
74extern struct consdev constab[];
75extern struct consdev *cn_tab;
76
77void cninit(void);
78int cngetc(void);
79int cngetsn(char *, int);
80void cnputc(int);
81void cnpollc(int);
82void cnbell(u_int, u_int, u_int);
83void cnflush(void);
84void cnhalt(void);
85void cnrint(void);
86void nullcnprobe(struct consdev *);
87void nullcninit(struct consdev *);
88void nullcnpollc(dev_t, int);
89void nullconsattach(int);
90
91/* console-specific types */
92#define dev_type_cnprobe(n) void n(struct consdev *)
93#define dev_type_cninit(n) void n(struct consdev *)
94#define dev_type_cngetc(n) int n(dev_t)
95#define dev_type_cnputc(n) void n(dev_t, int)
96#define dev_type_cnpollc(n) void n(dev_t, int)
97#define dev_type_cnbell(n) void n(dev_t, u_int, u_int, u_int)
98#define dev_type_cnhalt(n) void n(dev_t)
99#define dev_type_cnflush(n) void n(dev_t)
100
101#define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t))
102#define dev_init(n,t) __CONCAT(n,t)
103
104#define cons_decl(n) \
105 dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
106 dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell); \
107 dev_decl(n,cnflush); dev_decl(n,cnhalt);
108
109#define cons_init(n) { \
110 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
111 dev_init(n,cnputc), dev_init(n,cnpollc), NULL, NULL, NULL, \
112 0, 0 }
113
114#define cons_init_bell(n) { \
115 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
116 dev_init(n,cnputc), dev_init(n,cnpollc), dev_init(n,cnbell) }
117
118#define cons_init_halt(n) { \
119 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
120 dev_init(n,cnputc), dev_init(n,cnpollc), 0, \
121 dev_init(n,cnhalt) }
122
123#endif
124
125#endif /* _SYS_DEV_CONS_H_ */
126