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freebsd/sys/isa/vga_isa.c
Poul-Henning Kamp 4e2f199e0c This commit should be a extensive NO-OP: 
Reformat and initialize correctly all "struct cdevsw".

        Initialize the d_maj and d_bmaj fields.

        The d_reset field was not removed, although it is never used.

I used a program to do most of this, so all the files now use the
same consistent format.  Please keep it that way.

Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00

2194 lines
58 KiB
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/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* Copyright (c) 1992-1998 Søren Schmidt
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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: vga_isa.c,v 1.9 1999/05/30 11:12:30 dfr Exp $
*/
#include "vga.h"
#include "opt_vga.h"
#include "opt_fb.h"
#include "opt_syscons.h" /* should be removed in the future, XXX */
#if NVGA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/console.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/vgareg.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
#define DRIVER_NAME "vga"
/* cdev driver declaration */
#define ISAVGA_UNIT(dev) minor(dev)
#define ISAVGA_MKMINOR(unit) (unit)
typedef struct isavga_softc {
video_adapter_t *adp;
} isavga_softc_t;
#define ISAVGA_SOFTC(unit) \
((isavga_softc_t *)devclass_get_softc(isavga_devclass, unit))
devclass_t isavga_devclass;
static int isavga_probe(device_t dev);
static int isavga_attach(device_t dev);
static device_method_t isavga_methods[] = {
DEVMETHOD(device_probe, isavga_probe),
DEVMETHOD(device_attach, isavga_attach),
{ 0, 0 }
};
static driver_t isavga_driver = {
DRIVER_NAME,
isavga_methods,
sizeof(isavga_softc_t),
};
DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
static int isavga_probe_unit(int unit, isavga_softc_t *sc,
int flags);
static int isavga_attach_unit(int unit, isavga_softc_t *sc,
int flags);
#ifdef FB_INSTALL_CDEV
static d_open_t isavgaopen;
static d_close_t isavgaclose;
static d_read_t isavgaread;
static d_ioctl_t isavgaioctl;
static struct cdevsw vga_cdevsw = {
/* open */ isavgaopen,
/* close */ isavgaclose,
/* read */ noread,
/* write */ nowrite,
/* ioctl */ isavgaioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ DRIVER_NAME,
/* parms */ noparms,
/* maj */ -1,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
};
#endif /* FB_INSTALL_CDEV */
static int
isavga_probe(device_t dev)
{
isavga_softc_t *sc;
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
device_set_desc(dev, "Generic ISA VGA");
sc = device_get_softc(dev);
return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev));
}
static int
isavga_attach(device_t dev)
{
isavga_softc_t *sc;
sc = device_get_softc(dev);
return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev));
}
static int
isavga_probe_unit(int unit, isavga_softc_t *sc, int flags)
{
video_switch_t *sw;
bzero(sc, sizeof(*sc));
sw = vid_get_switch(DRIVER_NAME);
if (sw == NULL)
return 0;
return (*sw->probe)(unit, &sc->adp, NULL, flags);
}
static int
isavga_attach_unit(int unit, isavga_softc_t *sc, int flags)
{
video_switch_t *sw;
int error;
sw = vid_get_switch(DRIVER_NAME);
if (sw == NULL)
return ENXIO;
error = (*sw->init)(unit, sc->adp, flags);
if (error)
return ENXIO;
#ifdef FB_INSTALL_CDEV
/* attach a virtual frame buffer device */
error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp,
&vga_cdevsw);
if (error)
return error;
#endif /* FB_INSTALL_CDEV */
if (bootverbose)
(*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
return 0;
}
/* LOW-LEVEL */
#include <machine/clock.h>
#include <machine/pc/vesa.h>
#define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
#define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
#define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
/* for compatibility with old kernel options */
#ifdef SC_ALT_SEQACCESS
#undef SC_ALT_SEQACCESS
#undef VGA_ALT_SEQACCESS
#define VGA_ALT_SEQACCESS 1
#endif
#ifdef SLOW_VGA
#undef SLOW_VGA
#undef VGA_SLOW_IOACCESS
#define VGA_SLOW_IOACCESS 1
#endif
/* architecture dependent option */
#ifdef __alpha__
#define VGA_NO_BIOS 1
#endif
/* this should really be in `rtc.h' */
#define RTC_EQUIPMENT 0x14
/* various sizes */
#define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
#define V_MODE_PARAM_SIZE 64
/* video adapter state buffer */
struct adp_state {
int sig;
#define V_STATE_SIG 0x736f6962
u_char regs[V_MODE_PARAM_SIZE];
};
typedef struct adp_state adp_state_t;
/* video adapter information */
#define DCC_MONO 0
#define DCC_CGA40 1
#define DCC_CGA80 2
#define DCC_EGAMONO 3
#define DCC_EGA40 4
#define DCC_EGA80 5
/*
* NOTE: `va_window' should have a virtual address, but is initialized
* with a physical address in the following table, as verify_adapter()
* will perform address conversion at run-time.
*/
static video_adapter_t adapter_init_value[] = {
/* DCC_MONO */
{ 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
0, 0, 0, 7, 0, },
/* DCC_CGA40 */
{ 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
0, 0, 0, 3, 0, },
/* DCC_CGA80 */
{ 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
0, 0, 0, 3, 0, },
/* DCC_EGAMONO */
{ 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
0, 0, 0, 7, 0, },
/* DCC_EGA40 */
{ 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
0, 0, 0, 3, 0, },
/* DCC_EGA80 */
{ 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
0, 0, 0, 3, 0, },
};
static video_adapter_t biosadapter[2];
static int biosadapters = 0;
/* video driver declarations */
static int vga_configure(int flags);
int (*vga_sub_configure)(int flags);
static int vga_nop(void);
static vi_probe_t vga_probe;
static vi_init_t vga_init;
static vi_get_info_t vga_get_info;
static vi_query_mode_t vga_query_mode;
static vi_set_mode_t vga_set_mode;
static vi_save_font_t vga_save_font;
static vi_load_font_t vga_load_font;
static vi_show_font_t vga_show_font;
static vi_save_palette_t vga_save_palette;
static vi_load_palette_t vga_load_palette;
static vi_set_border_t vga_set_border;
static vi_save_state_t vga_save_state;
static vi_load_state_t vga_load_state;
static vi_set_win_org_t vga_set_origin;
static vi_read_hw_cursor_t vga_read_hw_cursor;
static vi_set_hw_cursor_t vga_set_hw_cursor;
static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
static vi_mmap_t vga_mmap;
static vi_diag_t vga_diag;
static video_switch_t vgavidsw = {
vga_probe,
vga_init,
vga_get_info,
vga_query_mode,
vga_set_mode,
vga_save_font,
vga_load_font,
vga_show_font,
vga_save_palette,
vga_load_palette,
vga_set_border,
vga_save_state,
vga_load_state,
vga_set_origin,
vga_read_hw_cursor,
vga_set_hw_cursor,
vga_set_hw_cursor_shape,
(vi_blank_display_t *)vga_nop,
vga_mmap,
vga_diag,
};
VIDEO_DRIVER(mda, vgavidsw, NULL);
VIDEO_DRIVER(cga, vgavidsw, NULL);
VIDEO_DRIVER(ega, vgavidsw, NULL);
VIDEO_DRIVER(vga, vgavidsw, vga_configure);
/* VGA BIOS standard video modes */
#define EOT (-1)
#define NA (-2)
static video_info_t bios_vmode[] = {
/* CGA */
{ M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
/* EGA */
{ M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
/* VGA */
{ M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 },
{ M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
/* MDA */
{ M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 },
/* EGA */
{ M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
/* VGA */
{ M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 },
{ M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 },
{ M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 },
{ M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
#ifndef VGA_NO_MODE_CHANGE
/* CGA */
{ M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
{ M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 },
/* EGA */
{ M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 },
{ M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
/* VGA */
{ M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
{ M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1,
GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 },
#endif /* VGA_NO_MODE_CHANGE */
{ EOT },
};
static int init_done = FALSE;
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
static u_char *video_mode_ptr = NULL; /* EGA/VGA */
static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
#endif
static u_char *mode_map[V_MODE_MAP_SIZE];
static adp_state_t adpstate;
static adp_state_t adpstate2;
static int rows_offset = 1;
/* local macros and functions */
#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
static void map_mode_table(u_char *map[], u_char *table, int max);
#endif
static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
int color);
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
static int map_mode_num(int mode);
#endif
static int map_gen_mode_num(int type, int color, int mode);
static int map_bios_mode_num(int type, int color, int bios_mode);
static u_char *get_mode_param(int mode);
#ifndef VGA_NO_BIOS
static void fill_adapter_param(int code, video_adapter_t *adp);
#endif
static int verify_adapter(video_adapter_t *adp);
static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
#define COMP_IDENTICAL 0
#define COMP_SIMILAR 1
#define COMP_DIFFERENT 2
static int comp_adpregs(u_char *buf1, u_char *buf2);
#endif
static int probe_adapters(void);
#ifndef VGA_NO_FONT_LOADING
#define PARAM_BUFSIZE 6
static void set_font_mode(video_adapter_t *adp, u_char *buf);
static void set_normal_mode(video_adapter_t *adp, u_char *buf);
#endif
static void dump_buffer(u_char *buf, size_t len);
#define ISMAPPED(pa, width) \
(((pa) <= (u_long)0x1000 - (width)) \
|| ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
#define prologue(adp, flag, err) \
if (!init_done || !((adp)->va_flags & (flag))) \
return (err)
/* a backdoor for the console driver */
static int
vga_configure(int flags)
{
int i;
probe_adapters();
for (i = 0; i < biosadapters; ++i) {
if (!probe_done(&biosadapter[i]))
continue;
biosadapter[i].va_flags |= V_ADP_INITIALIZED;
if (!config_done(&biosadapter[i])) {
if (vid_register(&biosadapter[i]) < 0)
continue;
biosadapter[i].va_flags |= V_ADP_REGISTERED;
}
}
if (vga_sub_configure != NULL)
(*vga_sub_configure)(flags);
return biosadapters;
}
/* local subroutines */
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* construct the mode parameter map */
static void
map_mode_table(u_char *map[], u_char *table, int max)
{
int i;
for(i = 0; i < max; ++i)
map[i] = table + i*V_MODE_PARAM_SIZE;
for(; i < V_MODE_MAP_SIZE; ++i)
map[i] = NULL;
}
#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
static void
clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
{
video_info_t info;
int i;
/*
* NOTE: we don't touch `bios_vmode[]' because it is shared
* by all adapters.
*/
for(i = 0; i < max; ++i) {
if (vga_get_info(adp, i, &info))
continue;
if ((info.vi_flags & V_INFO_COLOR) != color)
map[i] = NULL;
}
}
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* map the non-standard video mode to a known mode number */
static int
map_mode_num(int mode)
{
static struct {
int from;
int to;
} mode_map[] = {
{ M_ENH_B80x43, M_ENH_B80x25 },
{ M_ENH_C80x43, M_ENH_C80x25 },
{ M_VGA_M80x30, M_VGA_M80x25 },
{ M_VGA_C80x30, M_VGA_C80x25 },
{ M_VGA_M80x50, M_VGA_M80x25 },
{ M_VGA_C80x50, M_VGA_C80x25 },
{ M_VGA_M80x60, M_VGA_M80x25 },
{ M_VGA_C80x60, M_VGA_C80x25 },
{ M_VGA_MODEX, M_VGA_CG320 },
};
int i;
for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
if (mode_map[i].from == mode)
return mode_map[i].to;
}
return mode;
}
#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
/* map a generic video mode to a known mode number */
static int
map_gen_mode_num(int type, int color, int mode)
{
static struct {
int from;
int to_color;
int to_mono;
} mode_map[] = {
{ M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
{ M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
{ M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
{ M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
};
int i;
if (mode == M_TEXT_80x25) {
switch (type) {
case KD_VGA:
if (color)
return M_VGA_C80x25;
else
return M_VGA_M80x25;
break;
case KD_EGA:
if (color)
return M_ENH_C80x25;
else
return M_EGAMONO80x25;
break;
case KD_CGA:
return M_C80x25;
case KD_MONO:
case KD_HERCULES:
return M_EGAMONO80x25; /* XXX: this name is confusing */
default:
return -1;
}
}
for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
if (mode_map[i].from == mode)
return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
}
return mode;
}
/* turn the BIOS video number into our video mode number */
static int
map_bios_mode_num(int type, int color, int bios_mode)
{
static int cga_modes[7] = {
M_B40x25, M_C40x25, /* 0, 1 */
M_B80x25, M_C80x25, /* 2, 3 */
M_BG320, M_CG320,
M_BG640,
};
static int ega_modes[17] = {
M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
M_BG320, M_CG320,
M_BG640,
M_EGAMONO80x25, /* 7 */
8, 9, 10, 11, 12,
M_CG320_D,
M_CG640_E,
M_ENHMONOAPA2, /* XXX: video momery > 64K */
M_ENH_CG640, /* XXX: video momery > 64K */
};
static int vga_modes[20] = {
M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
M_BG320, M_CG320,
M_BG640,
M_VGA_M80x25, /* 7 */
8, 9, 10, 11, 12,
M_CG320_D,
M_CG640_E,
M_ENHMONOAPA2,
M_ENH_CG640,
M_BG640x480, M_CG640x480,
M_VGA_CG320,
};
switch (type) {
case KD_VGA:
if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
return vga_modes[bios_mode];
else if (color)
return M_VGA_C80x25;
else
return M_VGA_M80x25;
break;
case KD_EGA:
if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
return ega_modes[bios_mode];
else if (color)
return M_ENH_C80x25;
else
return M_EGAMONO80x25;
break;
case KD_CGA:
if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
return cga_modes[bios_mode];
else
return M_C80x25;
break;
case KD_MONO:
case KD_HERCULES:
return M_EGAMONO80x25; /* XXX: this name is confusing */
default:
break;
}
return -1;
}
/* look up a parameter table entry */
static u_char
*get_mode_param(int mode)
{
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
if (mode >= V_MODE_MAP_SIZE)
mode = map_mode_num(mode);
#endif
if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
return mode_map[mode];
else
return NULL;
}
#ifndef VGA_NO_BIOS
static void
fill_adapter_param(int code, video_adapter_t *adp)
{
static struct {
int primary;
int secondary;
} dcc[] = {
{ DCC_MONO, DCC_EGA40 /* CGA monitor */ },
{ DCC_MONO, DCC_EGA80 /* CGA monitor */ },
{ DCC_MONO, DCC_EGA80 /* CGA emulation */ },
{ DCC_MONO, DCC_EGA80 },
{ DCC_CGA40, DCC_EGAMONO },
{ DCC_CGA80, DCC_EGAMONO },
{ DCC_EGA40 /* CGA monitor */, DCC_MONO},
{ DCC_EGA80 /* CGA monitor */, DCC_MONO},
{ DCC_EGA80 /* CGA emulation */,DCC_MONO },
{ DCC_EGA80, DCC_MONO },
{ DCC_EGAMONO, DCC_CGA40 },
{ DCC_EGAMONO, DCC_CGA40 },
};
if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
} else {
adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
}
}
#endif /* VGA_NO_BIOS */
static int
verify_adapter(video_adapter_t *adp)
{
vm_offset_t buf;
u_int16_t v;
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
u_int32_t p;
#endif
buf = BIOS_PADDRTOVADDR(adp->va_window);
v = readw(buf);
writew(buf, 0xA55A);
if (readw(buf) != 0xA55A)
return 1;
writew(buf, v);
switch (adp->va_type) {
case KD_EGA:
outb(adp->va_crtc_addr, 7);
if (inb(adp->va_crtc_addr) == 7) {
adp->va_type = KD_VGA;
adp->va_name = "vga";
adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
}
adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
/* the color adapter may be in the 40x25 mode... XXX */
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* get the BIOS video mode pointer */
p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
p = BIOS_SADDRTOLADDR(p);
if (ISMAPPED(p, sizeof(u_int32_t))) {
p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
p = BIOS_SADDRTOLADDR(p);
if (ISMAPPED(p, V_MODE_PARAM_SIZE))
video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
}
#endif
break;
case KD_CGA:
adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
/* may be in the 40x25 mode... XXX */
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* get the BIOS video mode pointer */
p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
p = BIOS_SADDRTOLADDR(p);
video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
#endif
break;
case KD_MONO:
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* get the BIOS video mode pointer */
p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
p = BIOS_SADDRTOLADDR(p);
video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
#endif
break;
}
return 0;
}
static void
update_adapter_info(video_adapter_t *adp, video_info_t *info)
{
adp->va_flags &= ~V_ADP_COLOR;
adp->va_flags |=
(info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
adp->va_crtc_addr =
(adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
adp->va_window_size = info->vi_window_size;
adp->va_window_gran = info->vi_window_gran;
if (info->vi_buffer_size == 0) {
adp->va_buffer = 0;
adp->va_buffer_size = 0;
} else {
adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer);
adp->va_buffer_size = info->vi_buffer_size;
}
if (info->vi_flags & V_INFO_GRAPHICS) {
switch (info->vi_depth/info->vi_planes) {
case 1:
adp->va_line_width = info->vi_width/8;
break;
case 2:
adp->va_line_width = info->vi_width/4;
break;
case 4:
adp->va_line_width = info->vi_width/2;
break;
case 8:
default: /* shouldn't happen */
adp->va_line_width = info->vi_width;
break;
}
} else {
adp->va_line_width = info->vi_width;
}
bcopy(info, &adp->va_info, sizeof(adp->va_info));
}
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
/* compare two parameter table entries */
static int
comp_adpregs(u_char *buf1, u_char *buf2)
{
static struct {
u_char mask;
} params[V_MODE_PARAM_SIZE] = {
{0xff}, {0x00}, {0xff}, /* COLS, ROWS, POINTS */
{0x00}, {0x00}, /* page length */
{0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
{0xf3}, /* misc register */
{0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
{0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
{0x00}, {0x00}, {0x00}, {0x00}, {0x00},
{0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
{0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
{0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
{0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
{0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
{0xff}, {0xff}, {0xff}, {0xff},
};
int identical = TRUE;
int i;
if ((buf1 == NULL) || (buf2 == NULL))
return COMP_DIFFERENT;
for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
if (params[i].mask == 0) /* don't care */
continue;
if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
return COMP_DIFFERENT;
if (buf1[i] != buf2[i])
identical = FALSE;
}
return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
}
#endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
/* probe video adapters and return the number of detected adapters */
static int
probe_adapters(void)
{
video_adapter_t *adp;
video_info_t info;
int i;
/* do this test only once */
if (init_done)
return biosadapters;
init_done = TRUE;
/*
* Locate display adapters.
* The AT architecture supports upto two adapters. `syscons' allows
* the following combinations of adapters:
* 1) MDA + CGA
* 2) MDA + EGA/VGA color
* 3) CGA + EGA/VGA mono
* Note that `syscons' doesn't bother with MCGA as it is only
* avaiable for low end PS/2 models which has 80286 or earlier CPUs,
* thus, they are not running FreeBSD!
* When there are two adapaters in the system, one becomes `primary'
* and the other `secondary'. The EGA adapter has a set of DIP
* switches on board for this information and the EGA BIOS copies
* it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
* The VGA BIOS has more sophisticated mechanism and has this
* information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
* compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
*/
/*
* Check rtc and BIOS data area.
* XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
* copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
* zeros for EGA and VGA. However, the EGA/VGA BIOS sets
* these bits in BIOSDATA_EQUIPMENT according to the monitor
* type detected.
*/
#ifndef VGA_NO_BIOS
switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
case 0:
/* EGA/VGA */
fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
biosadapter);
break;
case 1:
/* CGA 40x25 */
/* FIXME: switch to the 80x25 mode? XXX */
biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
break;
case 2:
/* CGA 80x25 */
biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
break;
case 3:
/* MDA */
biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
break;
}
#else
/* assume EGA/VGA? XXX */
biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
#endif /* VGA_NO_BIOS */
biosadapters = 0;
if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
++biosadapters;
biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
biosadapter[V_ADP_SECONDARY].va_mode =
biosadapter[V_ADP_SECONDARY].va_initial_mode =
map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
biosadapter[V_ADP_SECONDARY].va_flags
& V_ADP_COLOR,
biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
} else {
biosadapter[V_ADP_SECONDARY].va_type = -1;
}
if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
++biosadapters;
biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
#ifndef VGA_NO_BIOS
biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
readb(BIOS_PADDRTOVADDR(0x449));
#else
biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
#endif
biosadapter[V_ADP_PRIMARY].va_mode =
biosadapter[V_ADP_PRIMARY].va_initial_mode =
map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
} else {
biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
biosadapter[V_ADP_SECONDARY].va_type = -1;
}
if (biosadapters == 0)
return biosadapters;
biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
#if 0 /* we don't need these... */
fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
#endif
#if 0
/*
* We cannot have two video adapter of the same type; there must be
* only one of color or mono adapter, or one each of them.
*/
if (biosadapters > 1) {
if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
& V_ADP_COLOR))
/* we have two mono or color adapters!! */
return (biosadapters = 0);
}
#endif
/*
* Ensure a zero start address. This is mainly to recover after
* switching from pcvt using userconfig(). The registers are w/o
* for old hardware so it's too hard to relocate the active screen
* memory.
* This must be done before vga_save_state() for VGA.
*/
outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
/* the video mode parameter table in EGA/VGA BIOS */
/* NOTE: there can be only one EGA/VGA, wheather color or mono,
* recognized by the video BIOS.
*/
if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
(biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
adp = &biosadapter[V_ADP_PRIMARY];
} else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
(biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
adp = &biosadapter[V_ADP_SECONDARY];
} else {
adp = NULL;
}
bzero(mode_map, sizeof(mode_map));
if (adp != NULL) {
if (adp->va_type == KD_VGA) {
vga_save_state(adp, &adpstate, sizeof(adpstate));
#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
mode_map[adp->va_initial_mode] = adpstate.regs;
rows_offset = 1;
#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
if (video_mode_ptr == NULL) {
mode_map[adp->va_initial_mode] = adpstate.regs;
rows_offset = 1;
} else {
/* discard the table if we are not familiar with it... */
u_char *mp;
map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
mp = get_mode_param(adp->va_initial_mode);
if (mp != NULL)
bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
switch (comp_adpregs(adpstate.regs, mp)) {
case COMP_IDENTICAL:
/*
* OK, this parameter table looks reasonably familiar
* to us...
*/
/*
* This is a kludge for Toshiba DynaBook SS433
* whose BIOS video mode table entry has the actual #
* of rows at the offset 1; BIOSes from other
* manufacturers store the # of rows - 1 there. XXX
*/
rows_offset = adpstate.regs[1] + 1 - mp[1];
break;
case COMP_SIMILAR:
/*
* Not exactly the same, but similar enough to be
* trusted. However, use the saved register values
* for the initial mode and other modes which are
* based on the initial mode.
*/
mode_map[adp->va_initial_mode] = adpstate.regs;
rows_offset = adpstate.regs[1] + 1 - mp[1];
adpstate.regs[1] -= rows_offset - 1;
break;
case COMP_DIFFERENT:
default:
/*
* Don't use the paramter table in BIOS. It doesn't
* look familiar to us. Video mode switching is allowed
* only if the new mode is the same as or based on
* the initial mode.
*/
video_mode_ptr = NULL;
bzero(mode_map, sizeof(mode_map));
mode_map[adp->va_initial_mode] = adpstate.regs;
rows_offset = 1;
break;
}
}
#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
#ifndef VGA_NO_MODE_CHANGE
adp->va_flags |= V_ADP_MODECHANGE;
#endif
#ifndef VGA_NO_FONT_LOADING
adp->va_flags |= V_ADP_FONT;
#endif
} else if (adp->va_type == KD_EGA) {
#if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
rows_offset = 1;
#else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
if (video_mode_ptr == NULL) {
rows_offset = 1;
} else {
u_char *mp;
map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
/* XXX how can one validate the EGA table... */
mp = get_mode_param(adp->va_initial_mode);
if (mp != NULL) {
adp->va_flags |= V_ADP_MODECHANGE;
#ifndef VGA_NO_FONT_LOADING
adp->va_flags |= V_ADP_FONT;
#endif
rows_offset = 1;
} else {
/*
* This is serious. We will not be able to switch video
* modes at all...
*/
video_mode_ptr = NULL;
bzero(mode_map, sizeof(mode_map));
rows_offset = 1;
}
}
#endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
}
}
/* remove conflicting modes if we have more than one adapter */
if (biosadapters > 1) {
for (i = 0; i < biosadapters; ++i) {
if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
continue;
clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
(biosadapter[i].va_flags & V_ADP_COLOR) ?
V_INFO_COLOR : 0);
if ((biosadapter[i].va_type == KD_VGA)
|| (biosadapter[i].va_type == KD_EGA)) {
biosadapter[i].va_io_base =
(biosadapter[i].va_flags & V_ADP_COLOR) ?
IO_VGA : IO_MDA;
biosadapter[i].va_io_size = 32;
}
}
}
/* buffer address */
vga_get_info(&biosadapter[V_ADP_PRIMARY],
biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
if (biosadapters > 1) {
vga_get_info(&biosadapter[V_ADP_SECONDARY],
biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
}
/*
* XXX: we should verify the following values for the primary adapter...
* crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
* color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
* ? 0 : V_ADP_COLOR;
* columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
* rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
* font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
* buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
*/
return biosadapters;
}
/* entry points */
static int
vga_nop(void)
{
return 0;
}
static int
vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
{
probe_adapters();
if (unit >= biosadapters)
return ENXIO;
*adpp = &biosadapter[unit];
return 0;
}
static int
vga_init(int unit, video_adapter_t *adp, int flags)
{
if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
return ENXIO;
if (!init_done(adp)) {
/* nothing to do really... */
adp->va_flags |= V_ADP_INITIALIZED;
}
if (!config_done(adp)) {
if (vid_register(adp) < 0)
return ENXIO;
adp->va_flags |= V_ADP_REGISTERED;
}
if (vga_sub_configure != NULL)
(*vga_sub_configure)(0);
return 0;
}
/*
* get_info():
* Return the video_info structure of the requested video mode.
*
* all adapters
*/
static int
vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
{
int i;
if (!init_done)
return 1;
mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
#ifndef VGA_NO_MODE_CHANGE
if (adp->va_flags & V_ADP_MODECHANGE) {
/*
* If the parameter table entry for this mode is not found,
* the mode is not supported...
*/
if (get_mode_param(mode) == NULL)
return 1;
} else
#endif /* VGA_NO_MODE_CHANGE */
{
/*
* Even if we don't support video mode switching on this adapter,
* the information on the initial (thus current) video mode
* should be made available.
*/
if (mode != adp->va_initial_mode)
return 1;
}
for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
if (bios_vmode[i].vi_mode == NA)
continue;
if (mode == bios_vmode[i].vi_mode) {
*info = bios_vmode[i];
return 0;
}
}
return 1;
}
/*
* query_mode():
* Find a video mode matching the requested parameters.
* Fields filled with 0 are considered "don't care" fields and
* match any modes.
*
* all adapters
*/
static int
vga_query_mode(video_adapter_t *adp, video_info_t *info)
{
video_info_t buf;
int i;
if (!init_done)
return -1;
for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
if (bios_vmode[i].vi_mode == NA)
continue;
if ((info->vi_width != 0)
&& (info->vi_width != bios_vmode[i].vi_width))
continue;
if ((info->vi_height != 0)
&& (info->vi_height != bios_vmode[i].vi_height))
continue;
if ((info->vi_cwidth != 0)
&& (info->vi_cwidth != bios_vmode[i].vi_cwidth))
continue;
if ((info->vi_cheight != 0)
&& (info->vi_cheight != bios_vmode[i].vi_cheight))
continue;
if ((info->vi_depth != 0)
&& (info->vi_depth != bios_vmode[i].vi_depth))
continue;
if ((info->vi_planes != 0)
&& (info->vi_planes != bios_vmode[i].vi_planes))
continue;
/* XXX: should check pixel format, memory model */
if ((info->vi_flags != 0)
&& (info->vi_flags != bios_vmode[i].vi_flags))
continue;
/* verify if this mode is supported on this adapter */
if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf))
continue;
return bios_vmode[i].vi_mode;
}
return -1;
}
/*
* set_mode():
* Change the video mode.
*
* EGA/VGA
*/
static int
vga_set_mode(video_adapter_t *adp, int mode)
{
#ifndef VGA_NO_MODE_CHANGE
video_info_t info;
adp_state_t params;
prologue(adp, V_ADP_MODECHANGE, 1);
mode = map_gen_mode_num(adp->va_type,
adp->va_flags & V_ADP_COLOR, mode);
if (vga_get_info(adp, mode, &info))
return 1;
params.sig = V_STATE_SIG;
bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
switch (mode) {
case M_VGA_C80x60: case M_VGA_M80x60:
params.regs[2] = 0x08;
params.regs[19] = 0x47;
goto special_480l;
case M_VGA_C80x30: case M_VGA_M80x30:
params.regs[19] = 0x4f;
special_480l:
params.regs[9] |= 0xc0;
params.regs[16] = 0x08;
params.regs[17] = 0x3e;
params.regs[26] = 0xea;
params.regs[28] = 0xdf;
params.regs[31] = 0xe7;
params.regs[32] = 0x04;
goto setup_mode;
case M_ENH_C80x43: case M_ENH_B80x43:
params.regs[28] = 87;
goto special_80x50;
case M_VGA_C80x50: case M_VGA_M80x50:
special_80x50:
params.regs[2] = 8;
params.regs[19] = 7;
goto setup_mode;
case M_VGA_C40x25: case M_VGA_C80x25:
case M_VGA_M80x25:
case M_B40x25: case M_C40x25:
case M_B80x25: case M_C80x25:
case M_ENH_B40x25: case M_ENH_C40x25:
case M_ENH_B80x25: case M_ENH_C80x25:
case M_EGAMONO80x25:
setup_mode:
vga_load_state(adp, &params);
break;
case M_VGA_MODEX:
/* "unchain" the VGA mode */
params.regs[5-1+0x04] &= 0xf7;
params.regs[5-1+0x04] |= 0x04;
/* turn off doubleword mode */
params.regs[10+0x14] &= 0xbf;
/* turn off word adressing */
params.regs[10+0x17] |= 0x40;
/* set logical screen width */
params.regs[10+0x13] = 80;
/* set 240 lines */
params.regs[10+0x11] = 0x2c;
params.regs[10+0x06] = 0x0d;
params.regs[10+0x07] = 0x3e;
params.regs[10+0x10] = 0xea;
params.regs[10+0x11] = 0xac;
params.regs[10+0x12] = 0xdf;
params.regs[10+0x15] = 0xe7;
params.regs[10+0x16] = 0x06;
/* set vertical sync polarity to reflect aspect ratio */
params.regs[9] = 0xe3;
goto setup_grmode;
case M_BG320: case M_CG320: case M_BG640:
case M_CG320_D: case M_CG640_E:
case M_CG640x350: case M_ENH_CG640:
case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
setup_grmode:
vga_load_state(adp, &params);
break;
default:
return 1;
}
adp->va_mode = mode;
update_adapter_info(adp, &info);
/* move hardware cursor out of the way */
(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
return 0;
#else /* VGA_NO_MODE_CHANGE */
return 1;
#endif /* VGA_NO_MODE_CHANGE */
}
#ifndef VGA_NO_FONT_LOADING
static void
set_font_mode(video_adapter_t *adp, u_char *buf)
{
u_char *mp;
int s;
s = splhigh();
/* save register values */
if (adp->va_type == KD_VGA) {
outb(TSIDX, 0x02); buf[0] = inb(TSREG);
outb(TSIDX, 0x04); buf[1] = inb(TSREG);
outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
inb(adp->va_crtc_addr + 6);
outb(ATC, 0x10); buf[5] = inb(ATC + 1);
} else /* if (adp->va_type == KD_EGA) */ {
/*
* EGA cannot be read; copy parameters from the mode parameter
* table.
*/
mp = get_mode_param(adp->va_mode);
buf[0] = mp[5 + 0x02 - 1];
buf[1] = mp[5 + 0x04 - 1];
buf[2] = mp[55 + 0x04];
buf[3] = mp[55 + 0x05];
buf[4] = mp[55 + 0x06];
buf[5] = mp[35 + 0x10];
}
/* setup vga for loading fonts */
inb(adp->va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
inb(adp->va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x20); /* enable palette */
#if VGA_SLOW_IOACCESS
#ifdef VGA_ALT_SEQACCESS
outb(TSIDX, 0x00); outb(TSREG, 0x01);
#endif
outb(TSIDX, 0x02); outb(TSREG, 0x04);
outb(TSIDX, 0x04); outb(TSREG, 0x07);
#ifdef VGA_ALT_SEQACCESS
outb(TSIDX, 0x00); outb(TSREG, 0x03);
#endif
outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
#else /* VGA_SLOW_IOACCESS */
#ifdef VGA_ALT_SEQACCESS
outw(TSIDX, 0x0100);
#endif
outw(TSIDX, 0x0402);
outw(TSIDX, 0x0704);
#ifdef VGA_ALT_SEQACCESS
outw(TSIDX, 0x0300);
#endif
outw(GDCIDX, 0x0204);
outw(GDCIDX, 0x0005);
outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
#endif /* VGA_SLOW_IOACCESS */
splx(s);
}
static void
set_normal_mode(video_adapter_t *adp, u_char *buf)
{
int s;
s = splhigh();
/* setup vga for normal operation mode again */
inb(adp->va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x10); outb(ATC, buf[5]);
inb(adp->va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x20); /* enable palette */
#if VGA_SLOW_IOACCESS
#ifdef VGA_ALT_SEQACCESS
outb(TSIDX, 0x00); outb(TSREG, 0x01);
#endif
outb(TSIDX, 0x02); outb(TSREG, buf[0]);
outb(TSIDX, 0x04); outb(TSREG, buf[1]);
#ifdef VGA_ALT_SEQACCESS
outb(TSIDX, 0x00); outb(TSREG, 0x03);
#endif
outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
if (adp->va_crtc_addr == MONO_CRTC) {
outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
} else {
outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
}
#else /* VGA_SLOW_IOACCESS */
#ifdef VGA_ALT_SEQACCESS
outw(TSIDX, 0x0100);
#endif
outw(TSIDX, 0x0002 | (buf[0] << 8));
outw(TSIDX, 0x0004 | (buf[1] << 8));
#ifdef VGA_ALT_SEQACCESS
outw(TSIDX, 0x0300);
#endif
outw(GDCIDX, 0x0004 | (buf[2] << 8));
outw(GDCIDX, 0x0005 | (buf[3] << 8));
if (adp->va_crtc_addr == MONO_CRTC)
outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
else
outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
#endif /* VGA_SLOW_IOACCESS */
splx(s);
}
#endif /* VGA_NO_FONT_LOADING */
/*
* save_font():
* Read the font data in the requested font page from the video adapter.
*
* EGA/VGA
*/
static int
vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
int ch, int count)
{
#ifndef VGA_NO_FONT_LOADING
u_char buf[PARAM_BUFSIZE];
u_int32_t segment;
int c;
#ifdef VGA_ALT_SEQACCESS
int s;
u_char val = 0;
#endif
prologue(adp, V_ADP_FONT, 1);
if (fontsize < 14) {
/* FONT_8 */
fontsize = 8;
} else if (fontsize >= 32) {
fontsize = 32;
} else if (fontsize >= 16) {
/* FONT_16 */
fontsize = 16;
} else {
/* FONT_14 */
fontsize = 14;
}
if (page < 0 || page >= 8)
return 1;
segment = FONT_BUF + 0x4000*page;
if (page > 3)
segment -= 0xe000;
#ifdef VGA_ALT_SEQACCESS
if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01);
outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
outb(TSIDX, 0x00); outb(TSREG, 0x03);
splx(s);
}
#endif
set_font_mode(adp, buf);
if (fontsize == 32) {
bcopy_fromio(segment + ch*32, data, fontsize*count);
} else {
for (c = ch; count > 0; ++c, --count) {
bcopy_fromio(segment + c*32, data, fontsize);
data += fontsize;
}
}
set_normal_mode(adp, buf);
#ifdef VGA_ALT_SEQACCESS
if (adp->va_type == KD_VGA) {
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01);
outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
outb(TSIDX, 0x00); outb(TSREG, 0x03);
splx(s);
}
#endif
return 0;
#else /* VGA_NO_FONT_LOADING */
return 1;
#endif /* VGA_NO_FONT_LOADING */
}
/*
* load_font():
* Set the font data in the requested font page.
* NOTE: it appears that some recent video adapters do not support
* the font page other than 0... XXX
*
* EGA/VGA
*/
static int
vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
int ch, int count)
{
#ifndef VGA_NO_FONT_LOADING
u_char buf[PARAM_BUFSIZE];
u_int32_t segment;
int c;
#ifdef VGA_ALT_SEQACCESS
int s;
u_char val = 0;
#endif
prologue(adp, V_ADP_FONT, 1);
if (fontsize < 14) {
/* FONT_8 */
fontsize = 8;
} else if (fontsize >= 32) {
fontsize = 32;
} else if (fontsize >= 16) {
/* FONT_16 */
fontsize = 16;
} else {
/* FONT_14 */
fontsize = 14;
}
if (page < 0 || page >= 8)
return 1;
segment = FONT_BUF + 0x4000*page;
if (page > 3)
segment -= 0xe000;
#ifdef VGA_ALT_SEQACCESS
if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01);
outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
outb(TSIDX, 0x00); outb(TSREG, 0x03);
splx(s);
}
#endif
set_font_mode(adp, buf);
if (fontsize == 32) {
bcopy_toio(data, segment + ch*32, fontsize*count);
} else {
for (c = ch; count > 0; ++c, --count) {
bcopy_toio(data, segment + c*32, fontsize);
data += fontsize;
}
}
set_normal_mode(adp, buf);
#ifdef VGA_ALT_SEQACCESS
if (adp->va_type == KD_VGA) {
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01);
outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
outb(TSIDX, 0x00); outb(TSREG, 0x03);
splx(s);
}
#endif
return 0;
#else /* VGA_NO_FONT_LOADING */
return 1;
#endif /* VGA_NO_FONT_LOADING */
}
/*
* show_font():
* Activate the requested font page.
* NOTE: it appears that some recent video adapters do not support
* the font page other than 0... XXX
*
* EGA/VGA
*/
static int
vga_show_font(video_adapter_t *adp, int page)
{
#ifndef VGA_NO_FONT_LOADING
static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
int s;
prologue(adp, V_ADP_FONT, 1);
if (page < 0 || page >= 8)
return 1;
s = splhigh();
outb(TSIDX, 0x03); outb(TSREG, cg[page]);
splx(s);
return 0;
#else /* VGA_NO_FONT_LOADING */
return 1;
#endif /* VGA_NO_FONT_LOADING */
}
/*
* save_palette():
* Read DAC values. The values have expressed in 8 bits.
*
* VGA
*/
static int
vga_save_palette(video_adapter_t *adp, u_char *palette)
{
int i;
prologue(adp, V_ADP_PALETTE, 1);
/*
* We store 8 bit values in the palette buffer, while the standard
* VGA has 6 bit DAC .
*/
outb(PALRADR, 0x00);
for (i = 0; i < 256*3; ++i)
palette[i] = inb(PALDATA) << 2;
inb(adp->va_crtc_addr + 6); /* reset flip/flop */
return 0;
}
/*
* load_palette():
* Set DAC values.
*
* VGA
*/
static int
vga_load_palette(video_adapter_t *adp, u_char *palette)
{
int i;
prologue(adp, V_ADP_PALETTE, 1);
outb(PIXMASK, 0xff); /* no pixelmask */
outb(PALWADR, 0x00);
for (i = 0; i < 256*3; ++i)
outb(PALDATA, palette[i] >> 2);
inb(adp->va_crtc_addr + 6); /* reset flip/flop */
outb(ATC, 0x20); /* enable palette */
return 0;
}
/*
* set_border():
* Change the border color.
*
* CGA/EGA/VGA
*/
static int
vga_set_border(video_adapter_t *adp, int color)
{
prologue(adp, V_ADP_BORDER, 1);
switch (adp->va_type) {
case KD_EGA:
case KD_VGA:
inb(adp->va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x31); outb(ATC, color & 0xff);
break;
case KD_CGA:
outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
break;
case KD_MONO:
case KD_HERCULES:
default:
break;
}
return 0;
}
/*
* save_state():
* Read video register values.
* NOTE: this function only reads the standard EGA/VGA registers.
* any extra/extended registers of SVGA adapters are not saved.
*
* VGA
*/
static int
vga_save_state(video_adapter_t *adp, void *p, size_t size)
{
video_info_t info;
u_char *buf;
int crtc_addr;
int i, j;
int s;
if (size == 0) {
/* return the required buffer size */
prologue(adp, V_ADP_STATESAVE, 0);
return sizeof(adp_state_t);
} else {
prologue(adp, V_ADP_STATESAVE, 1);
if (size < sizeof(adp_state_t))
return 1;
}
((adp_state_t *)p)->sig = V_STATE_SIG;
buf = ((adp_state_t *)p)->regs;
bzero(buf, V_MODE_PARAM_SIZE);
crtc_addr = adp->va_crtc_addr;
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
for (i = 0, j = 5; i < 4; i++) {
outb(TSIDX, i + 1);
buf[j++] = inb(TSREG);
}
buf[9] = inb(MISC + 10); /* dot-clock */
outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
for (i = 0, j = 10; i < 25; i++) { /* crtc */
outb(crtc_addr, i);
buf[j++] = inb(crtc_addr + 1);
}
for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
inb(crtc_addr + 6); /* reset flip-flop */
outb(ATC, i);
buf[j++] = inb(ATC + 1);
}
for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
outb(GDCIDX, i);
buf[j++] = inb(GDCREG);
}
inb(crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x20); /* enable palette */
splx(s);
#if 1
if (vga_get_info(adp, adp->va_mode, &info) == 0) {
if (info.vi_flags & V_INFO_GRAPHICS) {
buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
} else {
buf[0] = info.vi_width; /* COLS */
buf[1] = info.vi_height - 1; /* ROWS */
}
buf[2] = info.vi_cheight; /* POINTS */
} else {
/* XXX: shouldn't be happening... */
printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
adp->va_unit, adp->va_name);
}
#else
buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
#endif
return 0;
}
/*
* load_state():
* Set video registers at once.
* NOTE: this function only updates the standard EGA/VGA registers.
* any extra/extended registers of SVGA adapters are not changed.
*
* EGA/VGA
*/
static int
vga_load_state(video_adapter_t *adp, void *p)
{
u_char *buf;
int crtc_addr;
int s;
int i;
prologue(adp, V_ADP_STATELOAD, 1);
if (((adp_state_t *)p)->sig != V_STATE_SIG)
return 1;
buf = ((adp_state_t *)p)->regs;
crtc_addr = adp->va_crtc_addr;
s = splhigh();
outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
for (i = 0; i < 4; ++i) { /* program sequencer */
outb(TSIDX, i + 1);
outb(TSREG, buf[i + 5]);
}
outb(MISC, buf[9]); /* set dot-clock */
outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
outb(crtc_addr, 0x11);
outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
for (i = 0; i < 25; ++i) { /* program crtc */
outb(crtc_addr, i);
outb(crtc_addr + 1, buf[i + 10]);
}
inb(crtc_addr+6); /* reset flip-flop */
for (i = 0; i < 20; ++i) { /* program attribute ctrl */
outb(ATC, i);
outb(ATC, buf[i + 35]);
}
for (i = 0; i < 9; ++i) { /* program graph data ctrl */
outb(GDCIDX, i);
outb(GDCREG, buf[i + 55]);
}
inb(crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x20); /* enable palette */
#if notyet /* a temporary workaround for kernel panic, XXX */
#ifndef VGA_NO_BIOS
if (adp->va_unit == V_ADP_PRIMARY) {
writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
#if 0
writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
#endif
}
#endif /* VGA_NO_BIOS */
#endif /* notyet */
splx(s);
return 0;
}
/*
* set_origin():
* Change the origin (window mapping) of the banked frame buffer.
*/
static int
vga_set_origin(video_adapter_t *adp, off_t offset)
{
/*
* The standard video modes do not require window mapping;
* always return error.
*/
return 1;
}
/*
* read_hw_cursor():
* Read the position of the hardware text cursor.
*
* all adapters
*/
static int
vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
{
u_int16_t off;
int s;
if (!init_done)
return 1;
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return 1;
s = spltty();
outb(adp->va_crtc_addr, 14);
off = inb(adp->va_crtc_addr + 1);
outb(adp->va_crtc_addr, 15);
off = (off << 8) | inb(adp->va_crtc_addr + 1);
splx(s);
*row = off / adp->va_info.vi_width;
*col = off % adp->va_info.vi_width;
return 0;
}
/*
* set_hw_cursor():
* Move the hardware text cursor. If col and row are both -1,
* the cursor won't be shown.
*
* all adapters
*/
static int
vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
{
u_int16_t off;
int s;
if (!init_done)
return 1;
if ((col == -1) && (row == -1)) {
off = -1;
} else {
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return 1;
off = row*adp->va_info.vi_width + col;
}
s = spltty();
outb(adp->va_crtc_addr, 14);
outb(adp->va_crtc_addr + 1, off >> 8);
outb(adp->va_crtc_addr, 15);
outb(adp->va_crtc_addr + 1, off & 0x00ff);
splx(s);
return 0;
}
/*
* set_hw_cursor_shape():
* Change the shape of the hardware text cursor. If the height is
* zero or negative, the cursor won't be shown.
*
* all adapters
*/
static int
vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
int celsize, int blink)
{
int s;
if (!init_done)
return 1;
s = spltty();
switch (adp->va_type) {
case KD_VGA:
case KD_CGA:
case KD_MONO:
case KD_HERCULES:
default:
if (height <= 0) {
/* make the cursor invisible */
outb(adp->va_crtc_addr, 10);
outb(adp->va_crtc_addr + 1, 32);
outb(adp->va_crtc_addr, 11);
outb(adp->va_crtc_addr + 1, 0);
} else {
outb(adp->va_crtc_addr, 10);
outb(adp->va_crtc_addr + 1, celsize - base - height);
outb(adp->va_crtc_addr, 11);
outb(adp->va_crtc_addr + 1, celsize - base - 1);
}
break;
case KD_EGA:
if (height <= 0) {
/* make the cursor invisible */
outb(adp->va_crtc_addr, 10);
outb(adp->va_crtc_addr + 1, celsize);
outb(adp->va_crtc_addr, 11);
outb(adp->va_crtc_addr + 1, 0);
} else {
outb(adp->va_crtc_addr, 10);
outb(adp->va_crtc_addr + 1, celsize - base - height);
outb(adp->va_crtc_addr, 11);
outb(adp->va_crtc_addr + 1, celsize - base);
}
break;
}
splx(s);
return 0;
}
/*
* mmap():
* Mmap frame buffer.
*
* all adapters
*/
static int
vga_mmap(video_adapter_t *adp, vm_offset_t offset)
{
if (offset > 0x20000 - PAGE_SIZE)
return -1;
#ifdef __i386__
return i386_btop((VIDEO_BUF_BASE + offset));
#endif
#ifdef __alpha__
return alpha_btop((VIDEO_BUF_BASE + offset));
#endif
}
static void
dump_buffer(u_char *buf, size_t len)
{
int i;
for(i = 0; i < len;) {
printf("%02x ", buf[i]);
if ((++i % 16) == 0)
printf("\n");
}
}
/*
* diag():
* Print some information about the video adapter and video modes,
* with requested level of details.
*
* all adapters
*/
static int
vga_diag(video_adapter_t *adp, int level)
{
#if FB_DEBUG > 1
video_info_t info;
#endif
u_char *mp;
if (!init_done)
return 1;
#if FB_DEBUG > 1
#ifndef VGA_NO_BIOS
printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
printf("vga: CRTC:0x%x, video option:0x%02x, ",
readw(BIOS_PADDRTOVADDR(0x463)),
readb(BIOS_PADDRTOVADDR(0x487)));
printf("rows:%d, cols:%d, font height:%d\n",
readb(BIOS_PADDRTOVADDR(0x44a)),
readb(BIOS_PADDRTOVADDR(0x484)) + 1,
readb(BIOS_PADDRTOVADDR(0x485)));
#endif /* VGA_NO_BIOS */
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
printf("vga: param table EGA/VGA:%p", video_mode_ptr);
printf(", CGA/MDA:%p\n", video_mode_ptr2);
#endif
printf("vga: rows_offset:%d\n", rows_offset);
#endif /* FB_DEBUG > 1 */
fb_dump_adp_info(DRIVER_NAME, adp, level);
#if FB_DEBUG > 1
if (adp->va_flags & V_ADP_MODECHANGE) {
for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
if (bios_vmode[i].vi_mode == NA)
continue;
if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
continue;
fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level);
}
} else {
vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
fb_dump_mode_info(DRIVER_NAME, adp, &info, level);
}
#endif /* FB_DEBUG > 1 */
if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
return 0;
#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
if (video_mode_ptr == NULL)
printf("vga%d: %s: WARNING: video mode switching is not "
"fully supported on this adapter\n",
adp->va_unit, adp->va_name);
#endif
if (level <= 0)
return 0;
if (adp->va_type == KD_VGA) {
printf("VGA parameters upon power-up\n");
dump_buffer(adpstate.regs, sizeof(adpstate.regs));
printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
}
mp = get_mode_param(adp->va_initial_mode);
if (mp == NULL) /* this shouldn't be happening */
return 0;
printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
dump_buffer(mp, V_MODE_PARAM_SIZE);
return 0;
}
#endif /* NVGA > 0 */
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