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 | |
44 | struct 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 | |
74 | extern struct consdev constab[]; |
75 | extern struct consdev *cn_tab; |
76 | |
77 | void cninit(void); |
78 | int cngetc(void); |
79 | int cngetsn(char *, int); |
80 | void cnputc(int); |
81 | void cnpollc(int); |
82 | void cnbell(u_int, u_int, u_int); |
83 | void cnflush(void); |
84 | void cnhalt(void); |
85 | void cnrint(void); |
86 | void nullcnprobe(struct consdev *); |
87 | void nullcninit(struct consdev *); |
88 | void nullcnpollc(dev_t, int); |
89 | void 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 | |