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
51 static tsw_ioctl_t *prev_user_ioctl;
52
53 static int
vesa_ioctl(struct tty * tp,u_long cmd,caddr_t data,struct thread * td)54 vesa_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
126 int
vesa_load_ioctl(void)127 vesa_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
136 int
vesa_unload_ioctl(void)137 vesa_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