Annotation of sys/dev/cons.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cons.h,v 1.15 2006/01/01 11:59:40 miod Exp $ */
2: /* $NetBSD: cons.h,v 1.14 1996/03/14 19:08:35 christos Exp $ */
3:
4: /*
5: * Copyright (c) 1988 University of Utah.
6: * Copyright (c) 1990, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * the Systems Programming Group of the University of Utah Computer
11: * Science Department.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. Neither the name of the University nor the names of its contributors
22: * may be used to endorse or promote products derived from this software
23: * without specific prior written permission.
24: *
25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35: * SUCH DAMAGE.
36: *
37: * from: Utah $Hdr: cons.h 1.6 92/01/21$
38: *
39: * @(#)cons.h 8.1 (Berkeley) 6/10/93
40: */
41:
42: struct consdev {
43: /* probe hardware and fill in consdev info */
44: void (*cn_probe)(struct consdev *);
45: /* turn on as console */
46: void (*cn_init)(struct consdev *);
47: /* kernel getchar interface */
48: int (*cn_getc)(dev_t);
49: /* kernel putchar interface */
50: void (*cn_putc)(dev_t, int);
51: /* turn on and off polling */
52: void (*cn_pollc)(dev_t, int);
53: /* ring bell */
54: void (*cn_bell)(dev_t, u_int, u_int, u_int);
55: dev_t cn_dev; /* major/minor of device */
56: int cn_pri; /* picking order; the higher the better */
57: };
58:
59: /* values for cn_pri - reflect our policy for console selection */
60: #define CN_DEAD 0 /* device doesn't exist */
61: #define CN_NORMAL 1 /* device exists but is nothing special */
62: #define CN_INTERNAL 2 /* "internal" bit-mapped display */
63: #define CN_REMOTE 3 /* serial interface with remote bit set */
64: #define CN_FORCED 4
65:
66: /* XXX */
67: #define CONSMAJOR 0
68:
69: #ifdef _KERNEL
70:
71: extern struct consdev constab[];
72: extern struct consdev *cn_tab;
73:
74: struct knote;
75:
76: void cninit(void);
77: int cnset(dev_t);
78: int cnopen(dev_t, int, int, struct proc *);
79: int cnclose(dev_t, int, int, struct proc *);
80: int cnread(dev_t, struct uio *, int);
81: int cnwrite(dev_t, struct uio *, int);
82: int cnioctl(dev_t, u_long, caddr_t, int, struct proc *);
83: int cnpoll(dev_t, int, struct proc *);
84: int cnkqfilter(dev_t, struct knote *);
85: int cngetc(void);
86: void cnputc(int);
87: void cnpollc(int);
88: void cnbell(u_int, u_int, u_int);
89: void cnrint(void);
90: void nullcnpollc(dev_t, int);
91:
92: /* console-specific types */
93: #define dev_type_cnprobe(n) void n(struct consdev *)
94: #define dev_type_cninit(n) void n(struct consdev *)
95: #define dev_type_cngetc(n) int n(dev_t)
96: #define dev_type_cnputc(n) void n(dev_t, int)
97: #define dev_type_cnpollc(n) void n(dev_t, int)
98: #define dev_type_cnbell(n) void n(dev_t, u_int, u_int, u_int)
99:
100: #define cons_decl(n) \
101: dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
102: dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell);
103:
104: #define cons_init(n) { \
105: dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \
106: dev_init(1,n,cnputc), dev_init(1,n,cnpollc), NULL, \
107: NODEV, CN_DEAD }
108:
109: #define cons_init_bell(n) { \
110: dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \
111: dev_init(1,n,cnputc), dev_init(1,n,cnpollc), dev_init(1,n,cnbell), \
112: NODEV, CN_DEAD }
113:
114: #endif
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