1 /*-
2 * spinconsole.c
3 *
4 * Author: Maksym Sobolyev <sobomax@sippysoft.com>
5 * Copyright (c) 2009 Sippy Software, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 */
37
38 #include <stand.h>
39 #include <bootstrap.h>
40
41 static void spinc_probe(struct console *cp);
42 static int spinc_init(int arg);
43 static void spinc_putchar(int c);
44 static int spinc_getchar(void);
45 static int spinc_ischar(void);
46
47 extern struct console *consoles[];
48
49 struct console spinconsole = {
50 .c_name = "spinconsole",
51 .c_desc = "spin port",
52 .c_probe = spinc_probe,
53 .c_init = spinc_init,
54 .c_out = spinc_putchar,
55 .c_in = spinc_getchar,
56 .c_ready = spinc_ischar
57 };
58
59 static struct console *parent = NULL;
60
61 static void
spinc_probe(struct console * cp)62 spinc_probe(struct console *cp)
63 {
64
65 if (parent == NULL)
66 parent = consoles[0];
67 parent->c_probe(cp);
68 }
69
70 static int
spinc_init(int arg)71 spinc_init(int arg)
72 {
73
74 return (parent->c_init(arg));
75 }
76
77 static void
spinc_putchar(int c)78 spinc_putchar(int c)
79 {
80 static unsigned tw_chars = 0x5C2D2F7C; /* "\-/|" */
81 static time_t lasttime = 0;
82 time_t now;
83
84 now = time(0);
85 if (now < (lasttime + 1))
86 return;
87 #ifdef TERM_EMU
88 if (lasttime > 0)
89 parent->c_out('\b');
90 #endif
91 lasttime = now;
92 parent->c_out((char)tw_chars);
93 tw_chars = (tw_chars >> 8) | ((tw_chars & (unsigned long)0xFF) << 24);
94 }
95
96 static int
spinc_getchar(void)97 spinc_getchar(void)
98 {
99
100 return (-1);
101 }
102
103 static int
spinc_ischar(void)104 spinc_ischar(void)
105 {
106
107 return (0);
108 }
109