1 /* $NetBSD: skiconsole.c,v 1.4 2009/07/20 04:59:04 kiyohara Exp $ */
2
3 /*-
4 * Copyright (c) 2000 Doug Rabson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 /* __FBSDID("$FreeBSD: src/sys/boot/ia64/libski/skiconsole.c,v 1.2 2003/04/03 21:36:29 obrien Exp $"); */
31 #include <lib/libsa/stand.h>
32 #include <lib/libsa/loadfile.h>
33
34 #include "bootstrap.h"
35 #include "libski.h"
36
37 static void
ski_cons_probe(struct console * cp)38 ski_cons_probe(struct console *cp)
39 {
40 cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
41 }
42
43 static int
ski_cons_init(int arg)44 ski_cons_init(int arg)
45 {
46 ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
47 return 0;
48 }
49
50 void
ski_cons_putchar(int c)51 ski_cons_putchar(int c)
52 {
53 ssc(c, 0, 0, 0, SSC_PUTCHAR);
54 }
55
56 static int pollchar = -1;
57
58 int
ski_cons_getchar(void)59 ski_cons_getchar(void)
60 {
61 int c;
62
63 if (pollchar > 0) {
64 c = pollchar;
65 pollchar = -1;
66 return c;
67 }
68
69 do {
70 c = ssc(0, 0, 0, 0, SSC_GETCHAR);
71 } while (c == 0);
72
73 return c;
74 }
75
76 int
ski_cons_poll(void)77 ski_cons_poll(void)
78 {
79 int c;
80 if (pollchar > 0)
81 return 1;
82 c = ssc(0, 0, 0, 0, SSC_GETCHAR);
83 if (!c)
84 return 0;
85 pollchar = c;
86 return 1;
87 }
88
89 struct console ski_console = {
90 "ski",
91 "ia64 SKI console",
92 0,
93 ski_cons_probe,
94 ski_cons_init,
95 ski_cons_putchar,
96 ski_cons_getchar,
97 ski_cons_poll
98 };
99