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freebsd-dev/sys/i386/isa/videoio.c
Søren Schmidt a8445737e7 Add VESA support to syscons. 
Kazu writes:

The VESA support code requires vm86 support. Make sure your kernel
configuration file has the following line.
        options "VM86"
If you want to statically link the VESA support code to the kernel,
add the following option to the kernel configuration file.
        options "VESA"

The vidcontrol command now accepts the following video mode names:
VESA_132x25, VESA_132x43, VESA_132x50, VESA_132x60, VESA_800x600

The VESA_800x600 mode is a raster display mode. The 80x25 text will
be displayed on the 800x600 screen. Useful for some laptop computers.

vidcontrol accepts the new `-i <info>' option, where <info> must be
either `adapter' or `mode'.  When the `-i adapter' option is given,
vidcontrol will print basic information (not much) on the video
adapter. When the `-i mode' option is specified, vidcontrol will
list video modes which are actually supported by the video adapter.

Submitted by:   Kazutaka YOKOTA yokota@FreeBSD.ORG
1998-09-15 18:16:39 +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.
* 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 REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* $Id$
*/
#include "sc.h"
#include "opt_syscons.h"
#if NSC > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/clock.h>
#include <machine/console.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <i386/isa/isa.h>
#include <i386/isa/videoio.h>
/* this should really be in `rtc.h' */
#define RTC_EQUIPMENT 0x14
/* 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[] = {
{ 0, KD_MONO, 0, MONO_BASE, 0xb0000, 32, 32, 0, 0, 0, 7, 0 },
{ 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 },
{ 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 },
{ 0, KD_EGA, 0, MONO_BASE, 0xb0000, 32, 32, 0, 0, 0, 7, 0 },
{ 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 },
{ 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 },
};
static video_adapter_t adapter[V_MAX_ADAPTERS];
static int adapters = 0;
/* VGA function entries */
static vi_init_t vid_init;
static vi_adapter_t vid_adapter;
static vi_get_info_t vid_get_info;
static vi_query_mode_t vid_query_mode;
static vi_set_mode_t vid_set_mode;
static vi_save_font_t vid_save_font;
static vi_load_font_t vid_load_font;
static vi_show_font_t vid_show_font;
static vi_save_palette_t vid_save_palette;
static vi_load_palette_t vid_load_palette;
static vi_set_border_t vid_set_border;
static vi_save_state_t vid_save_state;
static vi_load_state_t vid_load_state;
static vi_set_win_org_t vid_set_origin;
static vi_read_hw_cursor_t vid_read_hw_cursor;
static vi_set_hw_cursor_t vid_set_hw_cursor;
static vi_diag_t vid_diag;
struct vidsw biosvidsw = {
vid_init, vid_adapter, vid_get_info, vid_query_mode,
vid_set_mode, vid_save_font, vid_load_font, vid_show_font,
vid_save_palette,vid_load_palette,vid_set_border,vid_save_state,
vid_load_state, vid_set_origin, vid_read_hw_cursor, vid_set_hw_cursor,
vid_diag,
};
/* 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, 0xb8000, 32, 32, 0, 32 },
{ M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 },
{ M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 },
/* EGA */
{ M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 0xb8000, 32, 32, 0, 32 },
{ M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 0xb8000, 32, 32, 0, 32 },
/* VGA */
{ M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 },
{ M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 0xb0000, 32, 32, 0, 32 },
{ M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 },
/* MDA */
{ M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 0xb0000, 32, 32, 0, 32 },
/* EGA */
{ M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 },
/* VGA */
{ M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 0xb0000, 32, 32, 0, 32 },
{ M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 },
{ M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 0xb0000, 32, 32, 0, 32 },
{ M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 },
{ M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 0xb0000, 32, 32, 0, 32 },
{ M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 },
/* CGA */
{ M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS,
320, 200, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS,
320, 200, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 },
{ M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 200, 8, 8, 1, 1, 0xb8000, 32, 32, 0, 32 },
/* EGA */
{ M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS,
320, 200, 8, 8, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 200, 8, 8, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_EGAMONOAPA, V_INFO_GRAPHICS,
640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_ENHMONOAPA2,V_INFO_GRAPHICS,
640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 350, 8, 14, 2, 2, 0xa0000, 64, 64, 0, 64 },
{ M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 },
/* VGA */
{ M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 480, 8, 16, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS,
640, 480, 8, 16, 4, 4, 0xa0000, 64, 64, 0, 64 },
{ M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS,
320, 200, 8, 8, 8, 1, 0xa0000, 64, 64, 0, 64 },
{ M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS,
320, 240, 8, 8, 8, 1, 0xa0000, 64, 64, 0, 64 },
{ EOT },
};
static int init_done = FALSE;
static u_char *video_mode_ptr = NULL; /* EGA/VGA */
static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
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))
static void map_mode_table(u_char *map[], u_char *table, int max);
static void clear_mode_map(int ad, u_char *map[], int max, int color);
static int map_mode_num(int mode);
static int map_bios_mode_num(int type, int color, int bios_mode);
static u_char *get_mode_param(int mode);
static void fill_adapter_param(int code, video_adapter_t *adp);
static int verify_adapter(video_adapter_t *adp);
#define COMP_IDENTICAL 0
#define COMP_SIMILAR 1
#define COMP_DIFFERENT 2
static int comp_adpregs(u_char *buf1, u_char *buf2);
#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);
static char *adapter_name(int type);
static void dump_adp_info(int ad, video_adapter_t *adp, int level);
static void dump_mode_info(int ad, video_info_t *info, int level);
static void dump_buffer(u_char *buf, size_t len);
extern void generic_bcopy(const void *, void *, size_t);
#define ISMAPPED(pa, width) \
(((pa) <= (u_long)0x1000 - (width)) \
|| ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
#define prologue(ad, flag, err) \
if (!init_done \
|| ((ad) < 0) || ((ad) >= adapters) \
|| !(adapter[(ad)].va_flags & (flag))) \
return (err)
/* 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;
}
static void
clear_mode_map(int ad, 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 (vid_get_info(ad, i, &info))
continue;
if ((info.vi_flags & V_INFO_COLOR) != color)
map[i] = NULL;
}
}
/* the non-standard video mode is based on a standard mode... */
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;
}
/* 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 (mode >= V_MODE_MAP_SIZE)
mode = map_mode_num(mode);
if (mode < V_MODE_MAP_SIZE)
return mode_map[mode];
else
return NULL;
}
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];
}
}
static int
verify_adapter(video_adapter_t *adp)
{
u_short volatile *buf;
u_short v;
u_int32_t p;
buf = (u_short *)BIOS_PADDRTOVADDR(adp->va_window);
v = *buf;
*buf = (u_short) 0xA55A;
if (*buf != 0xA55A)
return 1;
*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_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
}
adp->va_flags |= V_ADP_STATELOAD | V_ADP_FONT | V_ADP_BORDER;
/* the color adapter may be in the 40x25 mode... XXX */
/* 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);
}
break;
case KD_CGA:
adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
/* may be in the 40x25 mode... XXX */
break;
case KD_MONO:
break;
}
return 0;
}
/* 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 registers */
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;
}
/* exported functions */
/* all adapters */
static int
vid_init(void)
{
video_adapter_t *adp;
video_info_t info;
u_char *mp;
int i;
/* do this test only once */
if (init_done)
return adapters;
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 date area */
/*
* XXX: don't use BIOSDATA_EQUIPMENT, it is not a dead copy
* of RTC_EQUIPMENT. The bit 4 and 5 of the ETC_EQUIPMENT are
* zeros for EGA and VGA. However, the EGA/VGA BIOS will set
* these bits in BIOSDATA_EQUIPMENT according to the monitor
* type detected.
*/
switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
case 0:
/* EGA/VGA */
fill_adapter_param(*(u_int8_t *)BIOS_PADDRTOVADDR(0x488) & 0x0f,
adapter);
break;
case 1:
/* CGA 40x25 */
/* FIXME: switch to the 80x25 mode? XXX */
adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
break;
case 2:
/* CGA 80x25 */
adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
break;
case 3:
/* MDA */
adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
break;
}
adapters = 0;
if (verify_adapter(&adapter[V_ADP_SECONDARY]) == 0) {
++adapters;
adapter[V_ADP_SECONDARY].va_mode =
adapter[V_ADP_SECONDARY].va_initial_mode =
map_bios_mode_num(adapter[V_ADP_SECONDARY].va_type,
adapter[V_ADP_SECONDARY].va_flags & V_ADP_COLOR,
adapter[V_ADP_SECONDARY].va_initial_bios_mode);
} else {
adapter[V_ADP_SECONDARY].va_type = -1;
}
if (verify_adapter(&adapter[V_ADP_PRIMARY]) == 0) {
++adapters;
adapter[V_ADP_PRIMARY].va_initial_bios_mode =
*(u_int8_t *)BIOS_PADDRTOVADDR(0x449);
adapter[V_ADP_PRIMARY].va_mode =
adapter[V_ADP_PRIMARY].va_initial_mode =
map_bios_mode_num(adapter[V_ADP_PRIMARY].va_type,
adapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
adapter[V_ADP_PRIMARY].va_initial_bios_mode);
} else {
adapter[V_ADP_PRIMARY] = adapter[V_ADP_SECONDARY];
adapter[V_ADP_SECONDARY].va_type = -1;
}
if (adapters == 0)
return adapters;
adapter[V_ADP_PRIMARY].va_index = V_ADP_PRIMARY;
adapter[V_ADP_SECONDARY].va_index = V_ADP_SECONDARY;
#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 (adapters > 1) {
if (!((adapter[0].va_flags ^ adapter[1].va_flags) & V_ADP_COLOR))
/* we have two mono or color adapters!! */
return (adapters = 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 vid_save_state() for VGA.
*/
outb(adapter[V_ADP_PRIMARY].va_crtc_addr, 12);
outb(adapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
outb(adapter[V_ADP_PRIMARY].va_crtc_addr, 13);
outb(adapter[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 ((adapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
(adapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
adp = &adapter[V_ADP_PRIMARY];
} else if ((adapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
(adapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
adp = &adapter[V_ADP_SECONDARY];
} else {
adp = NULL;
}
bzero(mode_map, sizeof(mode_map));
if (adp != NULL) {
if (adp->va_type == KD_VGA) {
vid_save_state(adp - adapter, &adpstate, sizeof(adpstate));
if (video_mode_ptr == NULL) {
mode_map[map_mode_num(adp->va_initial_mode)] = adpstate.regs;
rows_offset = 1;
} else {
/* discard the table if we are not familiar with it... */
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[map_mode_num(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[map_mode_num(adp->va_initial_mode)] =
adpstate.regs;
rows_offset = 1;
break;
}
}
adp->va_flags |= V_ADP_MODECHANGE;
} else if (adp->va_type == KD_EGA) {
if (video_mode_ptr == NULL) {
adp->va_flags &= ~V_ADP_FONT;
rows_offset = 1;
} else {
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;
rows_offset = 1;
} else {
/*
* This is serious. We will not be able to switch video
* modes at all...
*/
adp->va_flags &= ~V_ADP_FONT;
video_mode_ptr = NULL;
bzero(mode_map, sizeof(mode_map));
rows_offset = 1;
}
}
}
}
/* remove conflicting modes if we have more than one adapter */
if (adapters > 1) {
for (i = 0; i < adapters; ++i) {
if (!(adapter[i].va_flags & V_ADP_MODECHANGE))
continue;
clear_mode_map(i, mode_map, M_VGA_CG320 + 1,
(adapter[i].va_flags & V_ADP_COLOR) ?
V_INFO_COLOR : 0);
}
}
/* buffer address */
vid_get_info(V_ADP_PRIMARY,
adapter[V_ADP_PRIMARY].va_initial_mode, &info);
adapter[V_ADP_PRIMARY].va_window = BIOS_PADDRTOVADDR(info.vi_window);
adapter[V_ADP_PRIMARY].va_window_size = info.vi_window_size;
adapter[V_ADP_PRIMARY].va_window_gran = info.vi_window_gran;
adapter[V_ADP_PRIMARY].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer);
adapter[V_ADP_PRIMARY].va_buffer_size = info.vi_buffer_size;
if (adapters > 1) {
vid_get_info(V_ADP_SECONDARY,
adapter[V_ADP_SECONDARY].va_initial_mode, &info);
adapter[V_ADP_SECONDARY].va_window = BIOS_PADDRTOVADDR(info.vi_window);
adapter[V_ADP_SECONDARY].va_window_size = info.vi_window_size;
adapter[V_ADP_SECONDARY].va_window_gran = info.vi_window_gran;
adapter[V_ADP_SECONDARY].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer);
adapter[V_ADP_SECONDARY].va_buffer_size = info.vi_buffer_size;
}
/*
* 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 adapters;
}
/* all adapters */
static video_adapter_t
*vid_adapter(int ad)
{
if (!init_done)
return NULL;
if ((ad < 0) || (ad >= adapters))
return NULL;
return &adapter[ad];
}
/* all adapters */
static int
vid_get_info(int ad, int mode, video_info_t *info)
{
int i;
if (!init_done)
return 1;
if ((ad < 0) || (ad >= adapters))
return 1;
if (adapter[ad].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 {
/*
* 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 != adapter[ad].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;
}
/* all adapters */
static int
vid_query_mode(int ad, video_info_t *info)
{
video_info_t buf;
int i;
if (!init_done)
return -1;
if ((ad < 0) || (ad >= adapters))
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 (vid_get_info(ad, bios_vmode[i].vi_mode, &buf))
continue;
return bios_vmode[i].vi_mode;
}
return -1;
}
/* EGA/VGA */
static int
vid_set_mode(int ad, int mode)
{
video_info_t info;
adp_state_t params;
prologue(ad, V_ADP_MODECHANGE, 1);
if (vid_get_info(ad, 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:
vid_load_state(ad, &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:
vid_load_state(ad, &params);
break;
default:
return 1;
}
adapter[ad].va_mode = mode;
adapter[ad].va_flags &= ~V_ADP_COLOR;
adapter[ad].va_flags |=
(info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
adapter[ad].va_crtc_addr =
(adapter[ad].va_flags & V_ADP_COLOR) ? COLOR_BASE : MONO_BASE;
adapter[ad].va_window = BIOS_PADDRTOVADDR(info.vi_window);
adapter[ad].va_window_size = info.vi_window_size;
adapter[ad].va_window_gran = info.vi_window_gran;
if (info.vi_buffer_size == 0) {
adapter[ad].va_buffer = 0;
adapter[ad].va_buffer_size = 0;
} else {
adapter[ad].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer);
adapter[ad].va_buffer_size = info.vi_buffer_size;
}
return 0;
}
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 SLOW_VGA
#ifndef SC_BAD_FLICKER
outb(TSIDX, 0x00); outb(TSREG, 0x01);
#endif
outb(TSIDX, 0x02); outb(TSREG, 0x04);
outb(TSIDX, 0x04); outb(TSREG, 0x07);
#ifndef SC_BAD_FLICKER
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
#ifndef SC_BAD_FLICKER
outw(TSIDX, 0x0100);
#endif
outw(TSIDX, 0x0402);
outw(TSIDX, 0x0704);
#ifndef SC_BAD_FLICKER
outw(TSIDX, 0x0300);
#endif
outw(GDCIDX, 0x0204);
outw(GDCIDX, 0x0005);
outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
#endif
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 SLOW_VGA
#ifndef SC_BAD_FLICKER
outb(TSIDX, 0x00); outb(TSREG, 0x01);
#endif
outb(TSIDX, 0x02); outb(TSREG, buf[0]);
outb(TSIDX, 0x04); outb(TSREG, buf[1]);
#ifndef SC_BAD_FLICKER
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_BASE) {
outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
} else {
outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
}
#else
#ifndef SC_BAD_FLICKER
outw(TSIDX, 0x0100);
#endif
outw(TSIDX, 0x0002 | (buf[0] << 8));
outw(TSIDX, 0x0004 | (buf[1] << 8));
#ifndef SC_BAD_FLICKER
outw(TSIDX, 0x0300);
#endif
outw(GDCIDX, 0x0004 | (buf[2] << 8));
outw(GDCIDX, 0x0005 | (buf[3] << 8));
if (adp->va_crtc_addr == MONO_BASE)
outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
else
outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
#endif
splx(s);
}
/* EGA/VGA */
static int
vid_save_font(int ad, int page, int fontsize, u_char *data, int ch, int count)
{
u_char buf[PARAM_BUFSIZE];
u_char val = 0;
u_int32_t segment;
int c;
int s;
prologue(ad, 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 = VIDEOMEM + 0x4000*page;
if (page > 3)
segment -= 0xe000;
if (adapter[ad].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);
}
set_font_mode(&adapter[ad], buf);
if (fontsize == 32) {
generic_bcopy((void *)BIOS_PADDRTOVADDR(segment + ch*32), data,
fontsize*count);
} else {
for (c = ch; count > 0; ++c, --count) {
generic_bcopy((void *)BIOS_PADDRTOVADDR(segment + c*32), data,
fontsize);
data += fontsize;
}
}
set_normal_mode(&adapter[ad], buf);
if (adapter[ad].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);
}
return 0;
}
/* EGA/VGA */
static int
vid_load_font(int ad, int page, int fontsize, u_char *data, int ch, int count)
{
u_char buf[PARAM_BUFSIZE];
u_char val = 0;
u_int32_t segment;
int c;
int s;
prologue(ad, 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 = VIDEOMEM + 0x4000*page;
if (page > 3)
segment -= 0xe000;
if (adapter[ad].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);
}
set_font_mode(&adapter[ad], buf);
if (fontsize == 32) {
generic_bcopy(data, (void *)BIOS_PADDRTOVADDR(segment + ch*32),
fontsize*count);
} else {
for (c = ch; count > 0; ++c, --count) {
generic_bcopy(data, (void *)BIOS_PADDRTOVADDR(segment + c*32),
fontsize);
data += fontsize;
}
}
set_normal_mode(&adapter[ad], buf);
if (adapter[ad].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);
}
return 0;
}
/* EGA/VGA */
static int
vid_show_font(int ad, int page)
{
static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
int s;
prologue(ad, V_ADP_FONT, 1);
if (page < 0 || page >= 8)
return 1;
s = splhigh();
outb(TSIDX, 0x03); outb(TSREG, cg[page]);
splx(s);
return 0;
}
/* VGA */
static int
vid_save_palette(int ad, u_char *palette)
{
int i;
prologue(ad, 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(adapter[ad].va_crtc_addr + 6); /* reset flip/flop */
return 0;
}
/* VGA */
static int
vid_load_palette(int ad, u_char *palette)
{
int i;
prologue(ad, 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(adapter[ad].va_crtc_addr + 6); /* reset flip/flop */
outb(ATC, 0x20); /* enable palette */
return 0;
}
/* CGA/EGA/VGA */
static int
vid_set_border(int ad, int color)
{
prologue(ad, V_ADP_BORDER, 1);
switch (adapter[ad].va_type) {
case KD_EGA:
case KD_VGA:
inb(adapter[ad].va_crtc_addr + 6); /* reset flip-flop */
outb(ATC, 0x31); outb(ATC, color & 0xff);
break;
case KD_CGA:
outb(adapter[ad].va_crtc_addr + 5, color & 0x0f); /* color select register */
break;
case KD_MONO:
case KD_HERCULES:
default:
break;
}
return 0;
}
/* VGA */
static int
vid_save_state(int ad, 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(ad, V_ADP_STATESAVE, 0);
return sizeof(adp_state_t);
} else {
prologue(ad, 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 = adapter[ad].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 (vid_get_info(ad, adapter[ad].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("video#%d: failed to obtain mode info. (vid_save_state())\n",
ad);
}
#else
buf[0] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); /* COLS */
buf[1] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); /* ROWS */
buf[2] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); /* POINTS */
buf[3] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x44c);
buf[4] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x44d);
#endif
return 0;
}
/* EGA/VGA */
static int
vid_load_state(int ad, void *p)
{
u_char *buf;
int crtc_addr;
int s;
int i;
prologue(ad, V_ADP_STATELOAD, 1);
if (((adp_state_t *)p)->sig != V_STATE_SIG)
return 1;
buf = ((adp_state_t *)p)->regs;
crtc_addr = adapter[ad].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 (ad == V_ADP_PRIMARY) {
*(u_int8_t *)BIOS_PADDRTOVADDR(0x44a) = buf[0]; /* COLS */
*(u_int8_t *)BIOS_PADDRTOVADDR(0x484) = buf[1] + rows_offset - 1; /* ROWS */
*(u_int8_t *)BIOS_PADDRTOVADDR(0x485) = buf[2]; /* POINTS */
#if 0
*(u_int8_t *)BIOS_PADDRTOVADDR(0x44c) = buf[3];
*(u_int8_t *)BIOS_PADDRTOVADDR(0x44d) = buf[4];
#endif
}
splx(s);
return 0;
}
/* all */
static int
vid_set_origin(int ad, off_t offset)
{
/*
* The standard video modes do not require window mapping;
* always return error.
*/
return 1;
}
/* all */
static int
vid_read_hw_cursor(int ad, int *col, int *row)
{
video_info_t info;
u_int16_t off;
if (!init_done)
return 1;
if ((ad < 0) || (ad >= adapters))
return 1;
(*biosvidsw.get_info)(ad, adapter[ad].va_mode, &info);
if (info.vi_flags & V_INFO_GRAPHICS)
return 1;
outb(adapter[ad].va_crtc_addr, 14);
off = inb(adapter[ad].va_crtc_addr + 1);
outb(adapter[ad].va_crtc_addr, 15);
off = (off << 8) | inb(adapter[ad].va_crtc_addr + 1);
*row = off / info.vi_width;
*col = off % info.vi_width;
return 0;
}
/* all */
static int
vid_set_hw_cursor(int ad, int col, int row)
{
video_info_t info;
u_int16_t off;
if (!init_done)
return 1;
if ((ad < 0) || (ad >= adapters))
return 1;
(*biosvidsw.get_info)(ad, adapter[ad].va_mode, &info);
if (info.vi_flags & V_INFO_GRAPHICS)
return 1;
if ((col == -1) || (row == -1))
off = 0xffff;
else
off = row*info.vi_width + col;
outb(adapter[ad].va_crtc_addr, 14);
outb(adapter[ad].va_crtc_addr + 1, off >> 8);
outb(adapter[ad].va_crtc_addr, 15);
outb(adapter[ad].va_crtc_addr + 1, off & 0x00ff);
return 0;
}
static char
*adapter_name(int type)
{
static struct {
int type;
char *name;
} names[] = {
{ KD_MONO, "MDA" },
{ KD_HERCULES, "Hercules" },
{ KD_CGA, "CGA" },
{ KD_EGA, "EGA" },
{ KD_VGA, "VGA" },
{ KD_PC98, "PC-98xx" },
{ -1, "Unknown" },
};
int i;
for (i = 0; names[i].type != -1; ++i)
if (names[i].type == type)
break;
return names[i].name;
}
static void
dump_adp_info(int ad, video_adapter_t *adp, int level)
{
if (level <= 0)
return;
printf("video#%d: adapter type:%s (%d), flags:0x%x, CRTC:0x%x\n",
ad, adapter_name(adp->va_type), adp->va_type,
adp->va_flags, adp->va_crtc_addr);
printf("video#%d: init mode:%d, bios mode:%d, current mode:%d\n",
ad, adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
printf("video#%d: window:0x%x size:%dk gran:%dk, buf:0x%x size:%dk\n",
ad,
adp->va_window, adp->va_window_size, adp->va_window_gran,
adp->va_buffer, adp->va_buffer_size);
}
static void
dump_mode_info(int ad, video_info_t *info, int level)
{
if (level <= 0)
return;
printf("video#%d: mode:%d, flags:0x%x ",
ad, info->vi_mode, info->vi_flags);
if (info->vi_flags & V_INFO_GRAPHICS)
printf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
info->vi_width, info->vi_height,
info->vi_depth, info->vi_planes,
info->vi_cwidth, info->vi_cheight);
else
printf("T %dx%d, font:%dx%d, ",
info->vi_width, info->vi_height,
info->vi_cwidth, info->vi_cheight);
printf("win:0x%x\n", info->vi_window);
}
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");
}
}
static int
vid_diag(int level)
{
video_info_t info;
u_char *mp;
int ad;
int i;
if (!init_done)
return 1;
if (level > 0) {
printf("video: RTC equip. code:0x%02x, DCC code:0x%02x\n",
rtcin(RTC_EQUIPMENT), *(u_int8_t *)BIOS_PADDRTOVADDR(0x488));
printf("video: CRTC:0x%x, video option:0x%02x, ",
*(u_int16_t *)BIOS_PADDRTOVADDR(0x463),
*(u_int8_t *)BIOS_PADDRTOVADDR(0x487));
printf("rows:%d, cols:%d, font height:%d\n",
*(u_int8_t *)BIOS_PADDRTOVADDR(0x44a),
*(u_int8_t *)BIOS_PADDRTOVADDR(0x484) + 1,
*(u_int8_t *)BIOS_PADDRTOVADDR(0x485));
printf("video: param table EGA/VGA:%p, CGA/MDA:%p\n",
video_mode_ptr, video_mode_ptr2);
printf("video: rows_offset:%d\n", rows_offset);
}
for (ad = 0; ad < adapters; ++ad) {
dump_adp_info(ad, &adapter[ad], level);
if (!(adapter[ad].va_flags & V_ADP_MODECHANGE)) {
vid_get_info(ad, adapter[ad].va_initial_mode, &info);
dump_mode_info(ad, &info, level);
} else {
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;
dump_mode_info(ad, &bios_vmode[i], level);
}
}
if ((adapter[ad].va_type != KD_EGA) && (adapter[ad].va_type != KD_VGA))
continue;
if (video_mode_ptr == NULL)
printf("video#%d: WARNING: video mode switching is not fully supported on this adapter\n", ad);
if (level <= 0)
continue;
if (adapter[ad].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",
adapter[ad].va_initial_mode);
dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
}
mp = get_mode_param(adapter[ad].va_initial_mode);
if (mp == NULL) /* this shouldn't be happening */
continue;
printf("EGA/VGA parameters to be used for mode %d\n",
adapter[ad].va_initial_mode);
dump_buffer(mp, V_MODE_PARAM_SIZE);
}
return 0;
}
#endif /* NSC > 0 */
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