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freebsd/sys/dev/syscons/scvidctl.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

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/*-
* 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: scvidctl.c,v 1.4 1998/09/29 02:00:56 ache Exp $
*/
#include "sc.h"
#include "opt_syscons.h"
#if NSC > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signalvar.h>
#include <sys/tty.h>
#include <sys/kernel.h>
#include <machine/apm_bios.h>
#include <machine/console.h>
#include <i386/isa/videoio.h>
#include <i386/isa/syscons.h>
/* video ioctl */
extern scr_stat *cur_console;
extern int fonts_loaded;
extern int sc_history_size;
extern u_char palette[];
int
sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
int fontsize)
{
video_adapter_t *adp;
video_info_t info;
int error;
int s;
int i;
if ((*biosvidsw.get_info)(scp->adp, mode, &info))
return ENODEV;
adp = get_adapter(scp);
/* adjust argument values */
if (fontsize <= 0)
fontsize = info.vi_cheight;
if (fontsize < 14) {
fontsize = 8;
if (!(fonts_loaded & FONT_8))
return EINVAL;
} else if (fontsize >= 16) {
fontsize = 16;
if (!(fonts_loaded & FONT_16))
return EINVAL;
} else {
fontsize = 14;
if (!(fonts_loaded & FONT_14))
return EINVAL;
}
if ((xsize <= 0) || (xsize > info.vi_width))
xsize = info.vi_width;
if ((ysize <= 0) || (ysize > info.vi_height))
ysize = info.vi_height;
/* stop screen saver, etc */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
/* set up scp */
if (scp->history != NULL)
i = imax(scp->history_size / scp->xsize
- imax(sc_history_size, scp->ysize), 0);
else
i = 0;
/*
* This is a kludge to fend off scrn_update() while we
* muck around with scp. XXX
*/
scp->status |= UNKNOWN_MODE;
scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
scp->mode = mode;
scp->font_size = fontsize;
scp->xsize = xsize;
scp->ysize = ysize;
scp->xpixel = scp->xsize*8;
scp->ypixel = scp->ysize*fontsize;
/* allocate buffers */
sc_alloc_scr_buffer(scp, TRUE, TRUE);
if (ISMOUSEAVAIL(adp->va_flags))
sc_alloc_cut_buffer(scp, FALSE);
sc_alloc_history_buffer(scp, sc_history_size, i, FALSE);
splx(s);
if (scp == cur_console)
set_mode(scp);
scp->status &= ~UNKNOWN_MODE;
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
pgsignal(tp->t_pgrp, SIGWINCH, 1);
}
return 0;
}
int
sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
{
video_adapter_t *adp;
video_info_t info;
int error;
int s;
if ((*biosvidsw.get_info)(scp->adp, mode, &info))
return ENODEV;
adp = get_adapter(scp);
/* stop screen saver, etc */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
/* set up scp */
scp->status |= (UNKNOWN_MODE | GRAPHICS_MODE);
scp->status &= ~PIXEL_MODE;
scp->mode = mode;
scp->xpixel = info.vi_width;
scp->ypixel = info.vi_height;
scp->xsize = info.vi_width/8;
scp->ysize = info.vi_height/info.vi_cheight;
scp->font_size = FONT_NONE;
/* move the mouse cursor at the center of the screen */
sc_move_mouse(scp, scp->xpixel / 2, scp->ypixel / 2);
splx(s);
if (scp == cur_console)
set_mode(scp);
/* clear_graphics();*/
scp->status &= ~UNKNOWN_MODE;
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_xpixel != scp->xpixel
|| tp->t_winsize.ws_ypixel != scp->ypixel) {
tp->t_winsize.ws_xpixel = scp->xpixel;
tp->t_winsize.ws_ypixel = scp->ypixel;
pgsignal(tp->t_pgrp, SIGWINCH, 1);
}
return 0;
}
int
sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
int fontsize)
{
video_adapter_t *adp;
video_info_t info;
int error;
int s;
int i;
if ((*biosvidsw.get_info)(scp->adp, scp->mode, &info))
return ENODEV; /* this shouldn't happen */
adp = get_adapter(scp);
#ifdef SC_VIDEO_DEBUG
if (scp->scr_buf != NULL) {
printf("set_pixel_mode(): mode:%x, col:%d, row:%d, font:%d\n",
scp->mode, xsize, ysize, fontsize);
}
#endif
/* adjust argument values */
if ((fontsize <= 0) || (fontsize == FONT_NONE))
fontsize = info.vi_cheight;
if (fontsize < 14) {
fontsize = 8;
if (!(fonts_loaded & FONT_8))
return EINVAL;
} else if (fontsize >= 16) {
fontsize = 16;
if (!(fonts_loaded & FONT_16))
return EINVAL;
} else {
fontsize = 14;
if (!(fonts_loaded & FONT_14))
return EINVAL;
}
if (xsize <= 0)
xsize = info.vi_width/8;
if (ysize <= 0)
ysize = info.vi_height/fontsize;
#ifdef SC_VIDEO_DEBUG
if (scp->scr_buf != NULL) {
printf("set_pixel_mode(): mode:%x, col:%d, row:%d, font:%d\n",
scp->mode, xsize, ysize, fontsize);
printf("set_pixel_mode(): window:%x, %dx%d, xoff:%d, yoff:%d\n",
adp->va_window, info.vi_width, info.vi_height,
(info.vi_width/8 - xsize)/2,
(info.vi_height/fontsize - ysize)/2);
}
#endif
if ((info.vi_width < xsize*8) || (info.vi_height < ysize*fontsize))
return EINVAL;
/* only 16 color, 4 plane modes are supported XXX */
if ((info.vi_depth != 4) || (info.vi_planes != 4))
return ENODEV;
/*
* set_pixel_mode() currently does not support video modes whose
* memory size is larger than 64K. Because such modes require
* bank switching to access the entire screen. XXX
*/
if (info.vi_width*info.vi_height/8 > info.vi_window_size)
return ENODEV;
/* stop screen saver, etc */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
/* set up scp */
if (scp->history != NULL)
i = imax(scp->history_size / scp->xsize
- imax(sc_history_size, scp->ysize), 0);
else
i = 0;
scp->status |= (UNKNOWN_MODE | PIXEL_MODE);
scp->status &= ~(GRAPHICS_MODE | MOUSE_ENABLED);
scp->xsize = xsize;
scp->ysize = ysize;
scp->font_size = fontsize;
scp->xoff = (scp->xpixel/8 - xsize)/2;
scp->yoff = (scp->ypixel/fontsize - ysize)/2;
/* allocate buffers */
sc_alloc_scr_buffer(scp, TRUE, TRUE);
if (ISMOUSEAVAIL(adp->va_flags))
sc_alloc_cut_buffer(scp, FALSE);
sc_alloc_history_buffer(scp, sc_history_size, i, FALSE);
splx(s);
if (scp == cur_console)
set_border(scp, scp->border);
scp->status &= ~UNKNOWN_MODE;
#ifdef SC_VIDEO_DEBUG
printf("set_pixel_mode(): status:%x\n", scp->status);
#endif
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
pgsignal(tp->t_pgrp, SIGWINCH, 1);
}
return 0;
}
int
sc_vid_ioctl(struct tty *tp, u_long cmd, caddr_t data, int flag, struct proc *p)
{
scr_stat *scp;
video_adapter_t *adp;
int error;
int s;
scp = sc_get_scr_stat(tp->t_dev);
switch (cmd) {
case CONS_CURRENT: /* get current adapter type */
adp = get_adapter(scp);
*(int *)data = adp->va_type;
return 0;
case CONS_CURRENTADP: /* get current adapter index */
*(int *)data = scp->adp;
return 0;
case CONS_ADPINFO: /* adapter information */
adp = (*biosvidsw.adapter)(((video_adapter_t *)data)->va_index);
if (adp == NULL)
return ENODEV;
bcopy(adp, data, sizeof(*adp));
return 0;
case CONS_GET: /* get current video mode */
*(int *)data = scp->mode;
return 0;
case CONS_MODEINFO: /* get mode information */
return ((*biosvidsw.get_info)(scp->adp,
((video_info_t *)data)->vi_mode, (video_info_t *)data)
? ENODEV : 0);
case CONS_FINDMODE: /* find a matching video mode */
return ((*biosvidsw.query_mode)(scp->adp, (video_info_t *)data)
? ENODEV : 0);
case CONS_SETWINORG:
return ((*biosvidsw.set_win_org)(scp->adp, *(u_int *)data)
? ENODEV : 0);
/* generic text modes */
case SW_TEXT_80x25: case SW_TEXT_80x30:
case SW_TEXT_80x43: case SW_TEXT_80x50:
case SW_TEXT_80x60:
/* FALL THROUGH */
/* VGA TEXT MODES */
case SW_VGA_C40x25:
case SW_VGA_C80x25: case SW_VGA_M80x25:
case SW_VGA_C80x30: case SW_VGA_M80x30:
case SW_VGA_C80x50: case SW_VGA_M80x50:
case SW_VGA_C80x60: case SW_VGA_M80x60:
case SW_B40x25: case SW_C40x25:
case SW_B80x25: case SW_C80x25:
case SW_ENH_B40x25: case SW_ENH_C40x25:
case SW_ENH_B80x25: case SW_ENH_C80x25:
case SW_ENH_B80x43: case SW_ENH_C80x43:
case SW_EGAMONO80x25:
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);
/* GRAPHICS MODES */
case SW_BG320: case SW_BG640:
case SW_CG320: case SW_CG320_D: case SW_CG640_E:
case SW_CG640x350: case SW_ENH_CG640:
case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
case SW_VGA_MODEX:
adp = get_adapter(scp);
if (!(adp->va_flags & V_ADP_MODECHANGE))
return ENODEV;
return sc_set_graphics_mode(scp, tp, cmd & 0xff);
case KDSETMODE: /* set current mode of this (virtual) console */
switch (*(int *)data) {
case KD_TEXT: /* switch to TEXT (known) mode */
/*
* If scp->mode is of graphics modes, we don't know which
* text mode to switch back to...
*/
if (scp->status & GRAPHICS_MODE)
return EINVAL;
/* restore fonts & palette ! */
#if 0
adp = get_adapter(scp);
if (ISFONTAVAIL(adp->va_flags)
&& !(scp->status & (GRAPHICS_MODE | PIXEL_MODE)))
/*
* FONT KLUDGE
* Don't load fonts for now... XXX
*/
if (fonts_loaded & FONT_8)
copy_font(scp, LOAD, 8, font_8);
if (fonts_loaded & FONT_14)
copy_font(scp, LOAD, 14, font_14);
if (fonts_loaded & FONT_16)
copy_font(scp, LOAD, 16, font_16);
}
#endif
load_palette(scp, palette);
/* move hardware cursor out of the way */
(*biosvidsw.set_hw_cursor)(scp->adp, -1, -1);
/* FALL THROUGH */
case KD_TEXT1: /* switch to TEXT (known) mode */
/*
* If scp->mode is of graphics modes, we don't know which
* text/pixel mode to switch back to...
*/
if (scp->status & GRAPHICS_MODE)
return EINVAL;
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
scp->status |= UNKNOWN_MODE;
splx(s);
/* no restore fonts & palette */
if (scp == cur_console)
set_mode(scp);
sc_clear_screen(scp);
scp->status &= ~UNKNOWN_MODE;
return 0;
case KD_PIXEL: /* pixel (raster) display */
if (!(scp->status & (GRAPHICS_MODE | PIXEL_MODE)))
return EINVAL;
if (scp->status & GRAPHICS_MODE)
return sc_set_pixel_mode(scp, tp, scp->xsize, scp->ysize,
scp->font_size);
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
scp->status |= (UNKNOWN_MODE | PIXEL_MODE);
splx(s);
if (scp == cur_console) {
set_mode(scp);
load_palette(scp, palette);
}
sc_clear_screen(scp);
scp->status &= ~UNKNOWN_MODE;
return 0;
case KD_GRAPHICS: /* switch to GRAPHICS (unknown) mode */
s = spltty();
if ((error = sc_clean_up(scp))) {
splx(s);
return error;
}
scp->status |= UNKNOWN_MODE;
splx(s);
return 0;
default:
return EINVAL;
}
/* NOT REACHED */
case KDRASTER: /* set pixel (raster) display mode */
if (ISUNKNOWNSC(scp) || ISTEXTSC(scp))
return ENODEV;
return sc_set_pixel_mode(scp, tp, ((int *)data)[0], ((int *)data)[1],
((int *)data)[2]);
case KDGETMODE: /* get current mode of this (virtual) console */
/*
* From the user program's point of view, KD_PIXEL is the same
* as KD_TEXT...
*/
*data = ISGRAPHSC(scp) ? KD_GRAPHICS : KD_TEXT;
return 0;
case KDSBORDER: /* set border color of this (virtual) console */
scp->border = *data;
if (scp == cur_console)
set_border(cur_console, scp->border);
return 0;
}
return ENOIOCTL;
}
#endif /* NSC > 0 */
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