1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1998 Dag-Erling Sm��rgrav
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer
12 *    in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/syslog.h>
36#include <sys/consio.h>
37#include <sys/fbio.h>
38
39#include <dev/fb/fbreg.h>
40#include <dev/fb/splashreg.h>
41#include <dev/syscons/syscons.h>
42
43#define SAVER_NAME	 "logo_saver"
44
45#define SET_ORIGIN(adp, o) do {				\
46	int oo = o;					\
47	if (oo != last_origin)				\
48	    vidd_set_win_org(adp, last_origin = oo);	\
49	} while (0)
50
51extern unsigned int	 logo_w;
52extern unsigned int	 logo_h;
53extern unsigned char	 logo_pal[];
54extern unsigned char	 logo_img[];
55extern unsigned int	 logo_img_size;
56
57static u_char		*vid;
58static int		 banksize, scrmode, bpsl, scrw, scrh;
59static int		 blanked;
60
61static void
62logo_blit(video_adapter_t *adp, int x, int y)
63{
64	int d, l, o, p;
65	int last_origin = -1;
66
67	for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
68		o += banksize;
69	SET_ORIGIN(adp, o);
70
71	for (d = 0; d < logo_img_size; d += logo_w) {
72		if (p + logo_w < banksize) {
73			bcopy(logo_img + d, vid + p, logo_w);
74			p += bpsl;
75		} else if (p < banksize) {
76			l = banksize - p;
77			bcopy(logo_img + d, vid + p, l);
78			SET_ORIGIN(adp, (o += banksize));
79			bcopy(logo_img + d + l, vid, logo_w - l);
80			p += bpsl - banksize;
81		} else {
82			p -= banksize;
83			SET_ORIGIN(adp, (o += banksize));
84			bcopy(logo_img + d, vid + p, logo_w);
85			p += bpsl;
86		}
87	}
88}
89
90static void
91logo_update(video_adapter_t *adp)
92{
93	static int xpos = 0, ypos = 0;
94	static int xinc = 1, yinc = 1;
95
96	/* Turn when you hit the edge */
97	if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
98		xinc = -xinc;
99	if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
100		yinc = -yinc;
101	xpos += xinc;
102	ypos += yinc;
103
104	/* XXX Relies on margin around logo to erase trail */
105	logo_blit(adp, xpos, ypos);
106}
107
108static int
109logo_saver(video_adapter_t *adp, int blank)
110{
111	int pl;
112
113	if (blank) {
114		/* switch to graphics mode */
115		if (blanked <= 0) {
116			pl = splhigh();
117			vidd_set_mode(adp, scrmode);
118			vidd_load_palette(adp, logo_pal);
119			vidd_set_border(adp, 0);
120			blanked++;
121			vid = (u_char *)adp->va_window;
122			banksize = adp->va_window_size;
123			bpsl = adp->va_line_width;
124			splx(pl);
125			vidd_clear(adp);
126		}
127		logo_update(adp);
128	} else {
129		blanked = 0;
130	}
131	return (0);
132}
133
134static int
135logo_init(video_adapter_t *adp)
136{
137	video_info_t info;
138
139	if (!vidd_get_info(adp, M_VESA_CG800x600, &info)) {
140		scrmode = M_VESA_CG800x600;
141	} else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
142		scrmode = M_VGA_CG320;
143	} else {
144		log(LOG_NOTICE,
145		    "%s: the console does not support M_VGA_CG320\n",
146		    SAVER_NAME);
147		return (ENODEV);
148	}
149
150	scrw = info.vi_width;
151	scrh = info.vi_height;
152
153	return (0);
154}
155
156static int
157logo_term(video_adapter_t *adp)
158{
159	return (0);
160}
161
162static scrn_saver_t logo_module = {
163	SAVER_NAME,
164	logo_init,
165	logo_term,
166	logo_saver,
167	NULL
168};
169
170#ifdef BEASTIE_LOGO
171SAVER_MODULE(beastie_saver, logo_module);
172#else
173SAVER_MODULE(logo_saver, logo_module);
174#endif
175