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