1 /*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: stable/10/sys/boot/ia64/ski/skiconsole.c 135696 2004-09-24 03:53:50Z marcel $");
29
30 #include <stand.h>
31
32 #include "bootstrap.h"
33 #include "libski.h"
34
35 static void
ski_cons_probe(struct console * cp)36 ski_cons_probe(struct console *cp)
37 {
38 cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
39 }
40
41 static int
ski_cons_init(int arg)42 ski_cons_init(int arg)
43 {
44 ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
45 return 0;
46 }
47
48 void
ski_cons_putchar(int c)49 ski_cons_putchar(int c)
50 {
51 ssc(c, 0, 0, 0, SSC_PUTCHAR);
52 }
53
54 static int pollchar = -1;
55
56 int
ski_cons_getchar()57 ski_cons_getchar()
58 {
59 int c;
60
61 if (pollchar > 0) {
62 c = pollchar;
63 pollchar = -1;
64 return c;
65 }
66
67 do {
68 c = ssc(0, 0, 0, 0, SSC_GETCHAR);
69 } while (c == 0);
70
71 return c;
72 }
73
74 int
ski_cons_poll()75 ski_cons_poll()
76 {
77 int c;
78 if (pollchar > 0)
79 return 1;
80 c = ssc(0, 0, 0, 0, SSC_GETCHAR);
81 if (!c)
82 return 0;
83 pollchar = c;
84 return 1;
85 }
86
87 struct console ski_console = {
88 "ski",
89 "ia64 SKI console",
90 0,
91 ski_cons_probe,
92 ski_cons_init,
93 ski_cons_putchar,
94 ski_cons_getchar,
95 ski_cons_poll
96 };
97