/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Sascha Wildner <saw@online.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_vga.h"
#ifndef VGA_NO_MODE_CHANGE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/kernel.h>
#include <sys/fbio.h>
#include <sys/consio.h>
#include <dev/fb/vesa.h>
#include <dev/fb/fbreg.h>
#include <dev/syscons/syscons.h>
static tsw_ioctl_t *prev_user_ioctl;
static int
vesa_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
{
scr_stat *scp;
int mode;
scp = SC_STAT(tp);
switch (cmd) {
/* generic text modes */
case SW_TEXT_132x25: case SW_TEXT_132x30:
case SW_TEXT_132x43: case SW_TEXT_132x50:
case SW_TEXT_132x60:
if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0);
/* text modes */
case SW_VESA_C80x60:
case SW_VESA_C132x25:
case SW_VESA_C132x43:
case SW_VESA_C132x50:
case SW_VESA_C132x60:
if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
mode = (cmd & 0xff) + M_VESA_BASE;
return sc_set_text_mode(scp, tp, mode, 0, 0, 0, 0);
/* graphics modes */
case SW_VESA_32K_320: case SW_VESA_64K_320:
case SW_VESA_FULL_320:
case SW_VESA_CG640x400:
case SW_VESA_CG640x480:
case SW_VESA_32K_640: case SW_VESA_64K_640:
case SW_VESA_FULL_640:
case SW_VESA_800x600: case SW_VESA_CG800x600:
case SW_VESA_32K_800: case SW_VESA_64K_800:
case SW_VESA_FULL_800:
case SW_VESA_1024x768: case SW_VESA_CG1024x768:
case SW_VESA_32K_1024: case SW_VESA_64K_1024:
case SW_VESA_FULL_1024:
case SW_VESA_1280x1024: case SW_VESA_CG1280x1024:
case SW_VESA_32K_1280: case SW_VESA_64K_1280:
case SW_VESA_FULL_1280:
if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
mode = (cmd & 0xff) + M_VESA_BASE;
return sc_set_graphics_mode(scp, tp, mode);
default:
if (IOCGROUP(cmd) == 'V') {
if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
mode = (cmd & 0xff) + M_VESA_BASE;
if (((cmd & IOC_DIRMASK) == IOC_VOID) &&
(mode > M_VESA_FULL_1280) &&
(mode < M_VESA_MODE_MAX))
return sc_set_graphics_mode(scp, tp, mode);
}
}
if (prev_user_ioctl)
return (*prev_user_ioctl)(tp, cmd, data, td);
else
return ENOIOCTL;
}
int
vesa_load_ioctl(void)
{
if (prev_user_ioctl)
return EBUSY;
prev_user_ioctl = sc_user_ioctl;
sc_user_ioctl = vesa_ioctl;
return 0;
}
int
vesa_unload_ioctl(void)
{
if (sc_user_ioctl != vesa_ioctl)
return EBUSY;
sc_user_ioctl = prev_user_ioctl;
prev_user_ioctl = NULL;
return 0;
}
#endif /* VGA_NO_MODE_CHANGE */
