1/*-
2 * Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The DragonFly Project
6 * by Sascha Wildner <saw@online.de>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer as
13 *    the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include "opt_vga.h"
35
36#ifndef VGA_NO_MODE_CHANGE
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/conf.h>
41#include <sys/tty.h>
42#include <sys/kernel.h>
43#include <sys/fbio.h>
44#include <sys/consio.h>
45
46#include <dev/fb/vesa.h>
47
48#include <dev/fb/fbreg.h>
49#include <dev/syscons/syscons.h>
50
51static tsw_ioctl_t *prev_user_ioctl;
52
53static int
54vesa_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
55{
56	scr_stat *scp;
57	int mode;
58
59	scp = SC_STAT(tp);
60
61	switch (cmd) {
62
63	/* generic text modes */
64	case SW_TEXT_132x25: case SW_TEXT_132x30:
65	case SW_TEXT_132x43: case SW_TEXT_132x50:
66	case SW_TEXT_132x60:
67		if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
68			return ENODEV;
69		return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0);
70
71	/* text modes */
72	case SW_VESA_C80x60:
73	case SW_VESA_C132x25:
74	case SW_VESA_C132x43:
75	case SW_VESA_C132x50:
76	case SW_VESA_C132x60:
77		if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
78			return ENODEV;
79		mode = (cmd & 0xff) + M_VESA_BASE;
80		return sc_set_text_mode(scp, tp, mode, 0, 0, 0, 0);
81
82	/* graphics modes */
83	case SW_VESA_32K_320: 	case SW_VESA_64K_320:
84	case SW_VESA_FULL_320:
85
86	case SW_VESA_CG640x400:
87
88	case SW_VESA_CG640x480:
89	case SW_VESA_32K_640:	case SW_VESA_64K_640:
90	case SW_VESA_FULL_640:
91
92	case SW_VESA_800x600:	case SW_VESA_CG800x600:
93	case SW_VESA_32K_800:	case SW_VESA_64K_800:
94	case SW_VESA_FULL_800:
95
96	case SW_VESA_1024x768:	case SW_VESA_CG1024x768:
97	case SW_VESA_32K_1024:	case SW_VESA_64K_1024:
98	case SW_VESA_FULL_1024:
99
100	case SW_VESA_1280x1024:	case SW_VESA_CG1280x1024:
101	case SW_VESA_32K_1280:	case SW_VESA_64K_1280:
102	case SW_VESA_FULL_1280:
103		if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
104			return ENODEV;
105		mode = (cmd & 0xff) + M_VESA_BASE;
106		return sc_set_graphics_mode(scp, tp, mode);
107	default:
108		if (IOCGROUP(cmd) == 'V') {
109			if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
110				return ENODEV;
111
112			mode = (cmd & 0xff) + M_VESA_BASE;
113
114			if (((cmd & IOC_DIRMASK) == IOC_VOID) &&
115			    (mode > M_VESA_FULL_1280) &&
116			    (mode < M_VESA_MODE_MAX))
117				return sc_set_graphics_mode(scp, tp, mode);
118		}
119	}
120
121	if (prev_user_ioctl)
122		return (*prev_user_ioctl)(tp, cmd, data, td);
123	else
124		return ENOIOCTL;
125}
126
127int
128vesa_load_ioctl(void)
129{
130	if (prev_user_ioctl)
131		return EBUSY;
132	prev_user_ioctl = sc_user_ioctl;
133	sc_user_ioctl = vesa_ioctl;
134	return 0;
135}
136
137int
138vesa_unload_ioctl(void)
139{
140	if (sc_user_ioctl != vesa_ioctl)
141		return EBUSY;
142	sc_user_ioctl = prev_user_ioctl;
143	prev_user_ioctl = NULL;
144	return 0;
145}
146
147#endif /* VGA_NO_MODE_CHANGE */
148