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 <sys/cdefs.h>
39
40 #include <stand.h>
41 #include <bootstrap.h>
42
43
44 static void spinc_probe(struct console *cp);
45 static int spinc_init(struct console *cp, int arg);
46 static void spinc_putchar(struct console *cp, int c);
47 static int spinc_getchar(struct console *cp);
48 static int spinc_ischar(struct console *cp);
49 static void spinc_devinfo(struct console *cp);
50
51 struct console spinconsole = {
52 .c_name = "spin",
53 .c_desc = "spin port",
54 .c_flags = 0,
55 .c_probe = spinc_probe,
56 .c_init = spinc_init,
57 .c_out = spinc_putchar,
58 .c_in = spinc_getchar,
59 .c_ready = spinc_ischar,
60 .c_ioctl = NULL,
61 .c_devinfo = spinc_devinfo,
62 .c_private = NULL
63 };
64
65 static void
spinc_devinfo(struct console * cp __unused)66 spinc_devinfo(struct console *cp __unused)
67 {
68 printf("\tsoftware device");
69 }
70
71 static void
spinc_probe(struct console * cp)72 spinc_probe(struct console *cp)
73 {
74 int i;
75 struct console *parent;
76
77 if (cp->c_private == NULL) {
78 for (i = 0; consoles[i] != NULL; i++)
79 if (strcmp(consoles[i]->c_name, "text") == 0)
80 break;
81 cp->c_private = consoles[i];
82 }
83
84 parent = cp->c_private;
85 if (parent != NULL)
86 parent->c_probe(cp);
87 }
88
89 static int
spinc_init(struct console * cp,int arg)90 spinc_init(struct console *cp, int arg)
91 {
92 struct console *parent;
93
94 parent = cp->c_private;
95 if (parent != NULL)
96 return (parent->c_init(cp, arg));
97 else
98 return (0);
99 }
100
101 static void
spinc_putchar(struct console * cp,int c __unused)102 spinc_putchar(struct console *cp, int c __unused)
103 {
104 static unsigned tw_chars = 0x5C2D2F7C; /* "\-/|" */
105 static time_t lasttime = 0;
106 struct console *parent;
107 time_t now;
108
109 now = time(NULL);
110 if (now < (lasttime + 1))
111 return;
112 lasttime = now;
113 parent = cp->c_private;
114 if (parent == NULL)
115 return;
116
117 parent->c_out(parent, (char)tw_chars);
118 parent->c_out(parent, '\b');
119 tw_chars = (tw_chars >> 8) | ((tw_chars & (unsigned long)0xFF) << 24);
120 }
121
122 static int
spinc_getchar(struct console * cp __unused)123 spinc_getchar(struct console *cp __unused)
124 {
125
126 return (-1);
127 }
128
129 static int
spinc_ischar(struct console * cp __unused)130 spinc_ischar(struct console *cp __unused)
131 {
132
133 return (0);
134 }
135