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
44static void	spinc_probe(struct console *cp);
45static int	spinc_init(struct console *cp, int arg);
46static void	spinc_putchar(struct console *cp, int c);
47static int	spinc_getchar(struct console *cp);
48static int	spinc_ischar(struct console *cp);
49static void	spinc_devinfo(struct console *cp);
50
51struct 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
65static void
66spinc_devinfo(struct console *cp __unused)
67{
68	printf("\tsoftware device");
69}
70
71static void
72spinc_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
89static int
90spinc_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
101static void
102spinc_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
122static int
123spinc_getchar(struct console *cp __unused)
124{
125
126	return (-1);
127}
128
129static int
130spinc_ischar(struct console *cp __unused)
131{
132
133	return (0);
134}
135