freebsd-skq/sys/i386/isa/scvesactl.c
Kazutaka YOKOTA def802441f Yet another round of fixes for the VESA support code.
- Express various sizes in bytes, rather than Kbytes, in the video
  mode and adapter information structures.
- Fill 0 in the linear buffer size field if the linear frame buffer
  is not available.
- Remove SW_VESA_USER ioctl. It is still experimetal and was not meant
  to be released.
- Fix missing cast operator.
- Correctly handle pointers returned by the VESA BIOS. The pointers
  may point to the area either in the BIOS ROM or in the buffer supplied
  by the caller.
- Set the destructive cursor at the right moment.
1998-10-01 11:39:18 +00:00

146 lines
3.9 KiB
C

/*-
* Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* 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.
*
* $Id: scvesactl.c,v 1.5 1998/09/26 03:38:40 yokota Exp $
*/
#include "sc.h"
#include "opt_vesa.h"
#include "opt_vm86.h"
#if (NSC > 0 && defined(VESA) && defined(VM86)) || defined(VESA_MODULE)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/kernel.h>
#include <machine/apm_bios.h>
#include <machine/console.h>
#include <machine/pc/vesa.h>
#include <i386/isa/videoio.h>
#include <i386/isa/syscons.h>
static d_ioctl_t *prev_user_ioctl;
static int
vesa_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
scr_stat *scp;
struct tty *tp;
video_info_t info;
video_adapter_t *adp;
int mode;
int error;
int s;
tp = scdevtotty(dev);
if (!tp)
return ENXIO;
scp = sc_get_scr_stat(tp->t_dev);
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:
adp = get_adapter(scp);
if (!(adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
return sc_set_text_mode(scp, tp, cmd & 0xff, 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:
adp = get_adapter(scp);
if (!(adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
mode = (cmd & 0xff) + M_VESA_BASE;
vesa_text:
return sc_set_text_mode(scp, tp, mode, 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:
adp = get_adapter(scp);
if (!(adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
mode = (cmd & 0xff) + M_VESA_BASE;
vesa_graphics:
return sc_set_graphics_mode(scp, tp, mode);
}
if (prev_user_ioctl)
return (*prev_user_ioctl)(dev, cmd, data, flag, p);
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 /* (NSC > 0 && VESA && VM86) || VESA_MODULE */