1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 35 36 #include "opt_vga.h" 37 38 #ifndef VGA_NO_MODE_CHANGE 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/conf.h> 43 #include <sys/tty.h> 44 #include <sys/kernel.h> 45 #include <sys/fbio.h> 46 #include <sys/consio.h> 47 48 #include <dev/fb/vesa.h> 49 50 #include <dev/fb/fbreg.h> 51 #include <dev/syscons/syscons.h> 52 53 static tsw_ioctl_t *prev_user_ioctl; 54 55 static int 56 vesa_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td) 57 { 58 scr_stat *scp; 59 int mode; 60 61 scp = SC_STAT(tp); 62 63 switch (cmd) { 64 65 /* generic text modes */ 66 case SW_TEXT_132x25: case SW_TEXT_132x30: 67 case SW_TEXT_132x43: case SW_TEXT_132x50: 68 case SW_TEXT_132x60: 69 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 70 return ENODEV; 71 return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0); 72 73 /* text modes */ 74 case SW_VESA_C80x60: 75 case SW_VESA_C132x25: 76 case SW_VESA_C132x43: 77 case SW_VESA_C132x50: 78 case SW_VESA_C132x60: 79 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 80 return ENODEV; 81 mode = (cmd & 0xff) + M_VESA_BASE; 82 return sc_set_text_mode(scp, tp, mode, 0, 0, 0, 0); 83 84 /* graphics modes */ 85 case SW_VESA_32K_320: case SW_VESA_64K_320: 86 case SW_VESA_FULL_320: 87 88 case SW_VESA_CG640x400: 89 90 case SW_VESA_CG640x480: 91 case SW_VESA_32K_640: case SW_VESA_64K_640: 92 case SW_VESA_FULL_640: 93 94 case SW_VESA_800x600: case SW_VESA_CG800x600: 95 case SW_VESA_32K_800: case SW_VESA_64K_800: 96 case SW_VESA_FULL_800: 97 98 case SW_VESA_1024x768: case SW_VESA_CG1024x768: 99 case SW_VESA_32K_1024: case SW_VESA_64K_1024: 100 case SW_VESA_FULL_1024: 101 102 case SW_VESA_1280x1024: case SW_VESA_CG1280x1024: 103 case SW_VESA_32K_1280: case SW_VESA_64K_1280: 104 case SW_VESA_FULL_1280: 105 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 106 return ENODEV; 107 mode = (cmd & 0xff) + M_VESA_BASE; 108 return sc_set_graphics_mode(scp, tp, mode); 109 default: 110 if (IOCGROUP(cmd) == 'V') { 111 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 112 return ENODEV; 113 114 mode = (cmd & 0xff) + M_VESA_BASE; 115 116 if (((cmd & IOC_DIRMASK) == IOC_VOID) && 117 (mode > M_VESA_FULL_1280) && 118 (mode < M_VESA_MODE_MAX)) 119 return sc_set_graphics_mode(scp, tp, mode); 120 } 121 } 122 123 if (prev_user_ioctl) 124 return (*prev_user_ioctl)(tp, cmd, data, td); 125 else 126 return ENOIOCTL; 127 } 128 129 int 130 vesa_load_ioctl(void) 131 { 132 if (prev_user_ioctl) 133 return EBUSY; 134 prev_user_ioctl = sc_user_ioctl; 135 sc_user_ioctl = vesa_ioctl; 136 return 0; 137 } 138 139 int 140 vesa_unload_ioctl(void) 141 { 142 if (sc_user_ioctl != vesa_ioctl) 143 return EBUSY; 144 sc_user_ioctl = prev_user_ioctl; 145 prev_user_ioctl = NULL; 146 return 0; 147 } 148 149 #endif /* VGA_NO_MODE_CHANGE */ 150