1 /*- 2 * Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include "opt_vga.h" 30 31 #ifndef VGA_NO_MODE_CHANGE 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/conf.h> 36 #include <sys/tty.h> 37 #include <sys/kernel.h> 38 #include <sys/fbio.h> 39 #include <sys/consio.h> 40 41 #include <machine/pc/vesa.h> 42 43 #include <dev/fb/fbreg.h> 44 #include <dev/syscons/syscons.h> 45 46 static d_ioctl_t *prev_user_ioctl; 47 48 static int 49 vesa_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 50 { 51 scr_stat *scp; 52 struct tty *tp; 53 int mode; 54 55 tp = dev->si_tty; 56 if (!tp) 57 return ENXIO; 58 scp = SC_STAT(tp->t_dev); 59 60 switch (cmd) { 61 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); 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); 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 } 107 108 if (prev_user_ioctl) 109 return (*prev_user_ioctl)(dev, cmd, data, flag, td); 110 else 111 return ENOIOCTL; 112 } 113 114 int 115 vesa_load_ioctl(void) 116 { 117 if (prev_user_ioctl) 118 return EBUSY; 119 prev_user_ioctl = sc_user_ioctl; 120 sc_user_ioctl = vesa_ioctl; 121 return 0; 122 } 123 124 int 125 vesa_unload_ioctl(void) 126 { 127 if (sc_user_ioctl != vesa_ioctl) 128 return EBUSY; 129 sc_user_ioctl = prev_user_ioctl; 130 prev_user_ioctl = NULL; 131 return 0; 132 } 133 134 #endif /* SC_NO_MODE_CHANGE */ 135