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 /* generic text modes */ 65 case SW_TEXT_132x25: case SW_TEXT_132x30: 66 case SW_TEXT_132x43: case SW_TEXT_132x50: 67 case SW_TEXT_132x60: 68 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 69 return ENODEV; 70 return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0); 71 72 /* text modes */ 73 case SW_VESA_C80x60: 74 case SW_VESA_C132x25: 75 case SW_VESA_C132x43: 76 case SW_VESA_C132x50: 77 case SW_VESA_C132x60: 78 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 79 return ENODEV; 80 mode = (cmd & 0xff) + M_VESA_BASE; 81 return sc_set_text_mode(scp, tp, mode, 0, 0, 0, 0); 82 83 /* graphics modes */ 84 case SW_VESA_32K_320: case SW_VESA_64K_320: 85 case SW_VESA_FULL_320: 86 87 case SW_VESA_CG640x400: 88 89 case SW_VESA_CG640x480: 90 case SW_VESA_32K_640: case SW_VESA_64K_640: 91 case SW_VESA_FULL_640: 92 93 case SW_VESA_800x600: case SW_VESA_CG800x600: 94 case SW_VESA_32K_800: case SW_VESA_64K_800: 95 case SW_VESA_FULL_800: 96 97 case SW_VESA_1024x768: case SW_VESA_CG1024x768: 98 case SW_VESA_32K_1024: case SW_VESA_64K_1024: 99 case SW_VESA_FULL_1024: 100 101 case SW_VESA_1280x1024: case SW_VESA_CG1280x1024: 102 case SW_VESA_32K_1280: case SW_VESA_64K_1280: 103 case SW_VESA_FULL_1280: 104 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 105 return ENODEV; 106 mode = (cmd & 0xff) + M_VESA_BASE; 107 return sc_set_graphics_mode(scp, tp, mode); 108 default: 109 if (IOCGROUP(cmd) == 'V') { 110 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 111 return ENODEV; 112 113 mode = (cmd & 0xff) + M_VESA_BASE; 114 115 if (((cmd & IOC_DIRMASK) == IOC_VOID) && 116 (mode > M_VESA_FULL_1280) && 117 (mode < M_VESA_MODE_MAX)) 118 return sc_set_graphics_mode(scp, tp, mode); 119 } 120 } 121 122 if (prev_user_ioctl) 123 return (*prev_user_ioctl)(tp, cmd, data, td); 124 else 125 return ENOIOCTL; 126 } 127 128 int 129 vesa_load_ioctl(void) 130 { 131 if (prev_user_ioctl) 132 return EBUSY; 133 prev_user_ioctl = sc_user_ioctl; 134 sc_user_ioctl = vesa_ioctl; 135 return 0; 136 } 137 138 int 139 vesa_unload_ioctl(void) 140 { 141 if (sc_user_ioctl != vesa_ioctl) 142 return EBUSY; 143 sc_user_ioctl = prev_user_ioctl; 144 prev_user_ioctl = NULL; 145 return 0; 146 } 147 148 #endif /* VGA_NO_MODE_CHANGE */ 149