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 <machine/pc/vesa.h> 47 48 #include <dev/fb/fbreg.h> 49 #include <dev/syscons/syscons.h> 50 51 static d_ioctl_t *prev_user_ioctl; 52 53 static int 54 vesa_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 55 { 56 scr_stat *scp; 57 struct tty *tp; 58 int mode; 59 60 tp = dev->si_tty; 61 if (!tp) 62 return ENXIO; 63 scp = SC_STAT(tp->t_dev); 64 65 switch (cmd) { 66 67 /* generic text modes */ 68 case SW_TEXT_132x25: case SW_TEXT_132x30: 69 case SW_TEXT_132x43: case SW_TEXT_132x50: 70 case SW_TEXT_132x60: 71 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 72 return ENODEV; 73 return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0); 74 75 /* text modes */ 76 case SW_VESA_C80x60: 77 case SW_VESA_C132x25: 78 case SW_VESA_C132x43: 79 case SW_VESA_C132x50: 80 case SW_VESA_C132x60: 81 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 82 return ENODEV; 83 mode = (cmd & 0xff) + M_VESA_BASE; 84 return sc_set_text_mode(scp, tp, mode, 0, 0, 0, 0); 85 86 /* graphics modes */ 87 case SW_VESA_32K_320: case SW_VESA_64K_320: 88 case SW_VESA_FULL_320: 89 90 case SW_VESA_CG640x400: 91 92 case SW_VESA_CG640x480: 93 case SW_VESA_32K_640: case SW_VESA_64K_640: 94 case SW_VESA_FULL_640: 95 96 case SW_VESA_800x600: case SW_VESA_CG800x600: 97 case SW_VESA_32K_800: case SW_VESA_64K_800: 98 case SW_VESA_FULL_800: 99 100 case SW_VESA_1024x768: case SW_VESA_CG1024x768: 101 case SW_VESA_32K_1024: case SW_VESA_64K_1024: 102 case SW_VESA_FULL_1024: 103 104 case SW_VESA_1280x1024: case SW_VESA_CG1280x1024: 105 case SW_VESA_32K_1280: case SW_VESA_64K_1280: 106 case SW_VESA_FULL_1280: 107 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 108 return ENODEV; 109 mode = (cmd & 0xff) + M_VESA_BASE; 110 return sc_set_graphics_mode(scp, tp, mode); 111 default: 112 if (IOCGROUP(cmd) == 'V') { 113 if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE)) 114 return ENODEV; 115 116 mode = (cmd & 0xff) + M_VESA_BASE; 117 118 if (((cmd & IOC_DIRMASK) == IOC_VOID) && 119 (mode > M_VESA_FULL_1280) && 120 (mode < M_VESA_MODE_MAX)) 121 return sc_set_graphics_mode(scp, tp, mode); 122 } 123 } 124 125 if (prev_user_ioctl) 126 return (*prev_user_ioctl)(dev, cmd, data, flag, td); 127 else 128 return ENOIOCTL; 129 } 130 131 int 132 vesa_load_ioctl(void) 133 { 134 if (prev_user_ioctl) 135 return EBUSY; 136 prev_user_ioctl = sc_user_ioctl; 137 sc_user_ioctl = vesa_ioctl; 138 return 0; 139 } 140 141 int 142 vesa_unload_ioctl(void) 143 { 144 if (sc_user_ioctl != vesa_ioctl) 145 return EBUSY; 146 sc_user_ioctl = prev_user_ioctl; 147 prev_user_ioctl = NULL; 148 return 0; 149 } 150 151 #endif /* VGA_NO_MODE_CHANGE */ 152