1 /* $NetBSD: cons.c,v 1.7 2011/02/08 20:20:14 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.c 1.7 92/02/28
37 *
38 * @(#)cons.c 8.1 (Berkeley) 6/10/93
39 */
40
41 #include <sys/param.h>
42 #include <dev/cons.h>
43
44 #include <hp300/stand/common/consdefs.h>
45 #include <hp300/stand/common/samachdep.h>
46
47 struct consdev constab[] = {
48 #ifdef ITECONSOLE
49 { iteprobe, iteinit, itegetchar, iteputchar },
50 #endif
51 #ifdef DCACONSOLE
52 { dcaprobe, dcainit, dcagetchar, dcaputchar },
53 #endif
54 #ifdef APCICONSOLE
55 { apciprobe, apciinit, apcigetchar, apciputchar },
56 #endif
57 #ifdef DCMCONSOLE
58 { dcmprobe, dcminit, dcmgetchar, dcmputchar },
59 #endif
60 { 0 },
61 };
62
63 int curcons_scode; /* select code of device currently being probed */
64 int cons_scode; /* final select code of console device */
65
66 struct consdev *cn_tab;
67 int noconsole;
68
69 void
cninit(void)70 cninit(void)
71 {
72 struct consdev *cp;
73
74 cn_tab = NULL;
75 noconsole = 1;
76 cons_scode = 256; /* larger than last valid select code */
77 for (cp = constab; cp->cn_probe; cp++) {
78 (*cp->cn_probe)(cp);
79 if (cp->cn_pri > CN_DEAD &&
80 (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) {
81 cn_tab = cp;
82 cons_scode = curcons_scode;
83 }
84 }
85 if (cn_tab) {
86 (*cn_tab->cn_init)(cn_tab);
87 noconsole = 0;
88 #if 0
89 printf("console: ");
90 switch (cons_scode) {
91 case -2:
92 printf("apci\n");
93 break;
94 case -1:
95 printf("internal grf\n");
96 break;
97 default:
98 printf("scode %d\n", cons_scode);
99 }
100 #endif
101 }
102 }
103
104 int
cngetc(void)105 cngetc(void)
106 {
107
108 /* Note: the dev_t arguments are not used! */
109 if (cn_tab)
110 return (*cn_tab->cn_getc)(0);
111 return 0;
112 }
113
114 int
cnputc(int c)115 cnputc(int c)
116 {
117
118 /* Note: the dev_t arguments are not used! */
119 if (userom)
120 romputchar(c);
121 else if (cn_tab)
122 (*cn_tab->cn_putc)(0, c);
123
124 return 0;
125 }
126