1 /*-
2 * Copyright (C) 2014 Nathan Whitehorn
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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include <sys/types.h>
27 #include "bootstrap.h"
28 #include "host_syscall.h"
29 #include "termios.h"
30
31 static void hostcons_probe(struct console *cp);
32 static int hostcons_init(int arg);
33 static void hostcons_putchar(int c);
34 static int hostcons_getchar(void);
35 static int hostcons_poll(void);
36
37 struct console hostconsole = {
38 "host",
39 "Host Console",
40 0,
41 hostcons_probe,
42 hostcons_init,
43 hostcons_putchar,
44 hostcons_getchar,
45 hostcons_poll,
46 };
47
48 static struct host_termios old_settings;
49
50 static void
hostcons_probe(struct console * cp)51 hostcons_probe(struct console *cp)
52 {
53
54 cp->c_flags |= C_PRESENTIN|C_PRESENTOUT;
55 }
56
57 static int
hostcons_init(int arg)58 hostcons_init(int arg)
59 {
60 struct host_termios new_settings;
61
62 host_tcgetattr(0, &old_settings);
63 new_settings = old_settings;
64 host_cfmakeraw(&new_settings);
65 host_tcsetattr(0, HOST_TCSANOW, &new_settings);
66
67 return (0);
68 }
69
70 static void
hostcons_putchar(int c)71 hostcons_putchar(int c)
72 {
73 uint8_t ch = c;
74
75 host_write(1, &ch, 1);
76 }
77
78 static int
hostcons_getchar(void)79 hostcons_getchar(void)
80 {
81 uint8_t ch;
82 int rv;
83
84 rv = host_read(0, &ch, 1);
85 if (rv == 1)
86 return (ch);
87 return (-1);
88 }
89
90 static int
hostcons_poll(void)91 hostcons_poll(void)
92 {
93 struct host_timeval tv = {0,0};
94 long fds = 1 << 0;
95 int ret;
96
97 ret = host_select(32, &fds, NULL, NULL, &tv);
98 return (ret > 0);
99 }
100