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freebsd/sys/pc98/cbus/gdc.c
Peter Wemm c3aac50f28 $Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00

1085 lines
25 KiB
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/*
* Copyright (c) 1999 FreeBSD(98) port team.
* 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include "gdc.h"
#include "opt_gdc.h"
#include "opt_fb.h"
#include "opt_syscons.h"
#if NGDC > 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 <pc98/pc98/pc98.h>
#include <pc98/pc98/pc98_machdep.h>
#include <isa/isavar.h>
#define TEXT_GDC IO_GDC1 /* 0x60 */
#define ROW 25
#define COL 80
#define DRIVER_NAME "gdc"
/* cdev driver declaration */
#define GDC_UNIT(dev) minor(dev)
#define GDC_MKMINOR(unit) (unit)
typedef struct gdc_softc {
video_adapter_t *adp;
} gdc_softc_t;
#define GDC_SOFTC(unit) \
((gdc_softc_t *)devclass_get_softc(gdc_devclass, unit))
static devclass_t gdc_devclass;
static int gdcprobe(device_t dev);
static int gdc_attach(device_t dev);
static device_method_t gdc_methods[] = {
DEVMETHOD(device_probe, gdcprobe),
DEVMETHOD(device_attach, gdc_attach),
{ 0, 0 }
};
static driver_t gdcdriver = {
DRIVER_NAME,
gdc_methods,
sizeof(gdc_softc_t),
};
DRIVER_MODULE(gdc, isa, gdcdriver, gdc_devclass, 0, 0);
static int gdc_probe_unit(int unit, gdc_softc_t *sc, int flags);
static int gdc_attach_unit(int unit, gdc_softc_t *sc, int flags);
#if FB_INSTALL_CDEV
static d_open_t gdcopen;
static d_close_t gdcclose;
static d_read_t gdcread;
static d_write_t gdcwrite;
static d_ioctl_t gdcioctl;
static d_mmap_t gdcmmap;
static struct cdevsw vga_cdevsw = {
/* open */ gdcopen,
/* close */ gdcclose,
/* read */ gdcread,
/* write */ gdcwrite,
/* ioctl */ gdcioctl,
/* 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
gdcprobe(device_t dev)
{
gdc_softc_t *sc;
device_set_desc(dev, "Generic GDC");
sc = device_get_softc(dev);
return gdc_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev));
}
static int
gdc_attach(device_t dev)
{
gdc_softc_t *sc;
int error;
sc = device_get_softc(dev);
error = gdc_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev));
if (error)
return error;
#ifdef FB_INSTALL_CDEV
/* attach a virtual frame buffer device */
error = fb_attach(makedev(0, GDC_MKMINOR(unit)), sc->adp, &gdc_cdevsw);
if (error)
return error;
#endif /* FB_INSTALL_CDEV */
if (bootverbose)
(*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
return 0;
}
static int
gdc_probe_unit(int unit, gdc_softc_t *sc, int flags)
{
video_switch_t *sw;
bzero(sc, sizeof(*sc));
sw = vid_get_switch(DRIVER_NAME);
if (sw == NULL)
return ENXIO;
return (*sw->probe)(unit, &sc->adp, NULL, flags);
}
static int
gdc_attach_unit(int unit, gdc_softc_t *sc, int flags)
{
video_switch_t *sw;
sw = vid_get_switch(DRIVER_NAME);
if (sw == NULL)
return ENXIO;
return (*sw->init)(unit, sc->adp, flags);
}
/* cdev driver functions */
#ifdef FB_INSTALL_CDEV
static int
gdcopen(dev_t dev, int flag, int mode, struct proc *p)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
if (sc == NULL)
return ENXIO;
if (mode & (O_CREAT | O_APPEND | O_TRUNC))
return ENODEV;
return genfbopen(&sc->gensc, sc->adp, flag, mode, p);
}
static int
gdcclose(dev_t dev, int flag, int mode, struct proc *p)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbclose(&sc->gensc, sc->adp, flag, mode, p);
}
static int
gdcread(dev_t dev, struct uio *uio, int flag)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbread(&sc->gensc, sc->adp, uio, flag);
}
static int
gdcwrite(dev_t dev, struct uio *uio, int flag)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbread(&sc->gensc, sc->adp, uio, flag);
}
static int
gdcioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, p);
}
static int
gdcmmap(dev_t dev, vm_offset_t offset, int prot)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbmmap(&sc->gensc, sc->adp, offset, prot);
}
#endif /* FB_INSTALL_CDEV */
/* LOW-LEVEL */
#include <machine/clock.h>
#include <pc98/pc98/30line.h>
#define TEXT_BUF_BASE 0x000a0000
#define TEXT_BUF_SIZE 0x00008000
#define GRAPHICS_BUF_BASE 0x000a8000
#define GRAPHICS_BUF_SIZE 0x00040000
#define VIDEO_BUF_BASE 0x000a0000
#define VIDEO_BUF_SIZE 0x00048000
#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)
/*
* NOTE: `va_window' should have a virtual address, but is initialized
* with a physical address in the following table, they will be
* converted at run-time.
*/
static video_adapter_t adapter_init_value[] = {
{ 0,
KD_PC98, "gdc", /* va_type, va_name */
0, 0, /* va_unit, va_minor */
V_ADP_COLOR | V_ADP_MODECHANGE | V_ADP_BORDER,
IO_GDC1, 16, TEXT_GDC, /* va_io*, XXX */
VIDEO_BUF_BASE, VIDEO_BUF_SIZE, /* va_mem* */
TEXT_BUF_BASE, TEXT_BUF_SIZE, TEXT_BUF_SIZE, 0, /* va_window* */
0, 0, /* va_buffer, va_buffer_size */
0, M_PC98_80x25, 0, /* va_*mode* */
},
};
static video_adapter_t biosadapter[1];
/* video driver declarations */
static int gdc_configure(int flags);
static int gdc_nop(void);
static int gdc_err(video_adapter_t *adp, ...);
static vi_probe_t gdc_probe;
static vi_init_t gdc_init;
static vi_get_info_t gdc_get_info;
static vi_query_mode_t gdc_query_mode;
static vi_set_mode_t gdc_set_mode;
static vi_set_border_t gdc_set_border;
static vi_save_state_t gdc_save_state;
static vi_load_state_t gdc_load_state;
static vi_read_hw_cursor_t gdc_read_hw_cursor;
static vi_set_hw_cursor_t gdc_set_hw_cursor;
static vi_set_hw_cursor_shape_t gdc_set_hw_cursor_shape;
static vi_blank_display_t gdc_blank_display;
static vi_mmap_t gdc_mmap_buf;
static vi_ioctl_t gdc_dev_ioctl;
static vi_diag_t gdc_diag;
static video_switch_t gdcvidsw = {
gdc_probe,
gdc_init,
gdc_get_info,
gdc_query_mode,
gdc_set_mode,
(vi_save_font_t *)gdc_err,
(vi_load_font_t *)gdc_err,
(vi_show_font_t *)gdc_err,
(vi_save_palette_t *)gdc_err,
(vi_load_palette_t *)gdc_err,
gdc_set_border,
gdc_save_state,
gdc_load_state,
(vi_set_win_org_t *)gdc_err,
gdc_read_hw_cursor,
gdc_set_hw_cursor,
gdc_set_hw_cursor_shape,
gdc_blank_display,
gdc_mmap_buf,
gdc_dev_ioctl,
(vi_clear_t *)gdc_err,
(vi_fill_rect_t *)gdc_err,
(vi_bitblt_t *)gdc_err,
(int (*)(void))gdc_err,
(int (*)(void))gdc_err,
gdc_diag,
};
VIDEO_DRIVER(gdc, gdcvidsw, gdc_configure);
/* GDC BIOS standard video modes */
#define EOT (-1)
#define NA (-2)
static video_info_t bios_vmode[] = {
{ M_PC98_80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
TEXT_BUF_BASE, TEXT_BUF_SIZE, TEXT_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
#ifdef LINE30
{ M_PC98_80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
TEXT_BUF_BASE, TEXT_BUF_SIZE, TEXT_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
#endif
{ EOT },
};
static int gdc_init_done = FALSE;
/* local functions */
static int map_gen_mode_num(int type, int color, int mode);
static int probe_adapters(void);
static void dump_buffer(u_char *buf, size_t len);
#define prologue(adp, flag, err) \
if (!gdc_init_done || !((adp)->va_flags & (flag))) \
return (err)
/* a backdoor for the console driver */
static int
gdc_configure(int flags)
{
probe_adapters();
biosadapter[0].va_flags |= V_ADP_INITIALIZED;
if (!config_done(&biosadapter[0])) {
if (vid_register(&biosadapter[0]) < 0)
return 1;
biosadapter[0].va_flags |= V_ADP_REGISTERED;
}
return 1;
}
/* local subroutines */
/* 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;
} mode_map[] = {
{ M_TEXT_80x25, M_PC98_80x25, },
#ifdef LINE30
{ M_TEXT_80x30, M_PC98_80x30, },
#endif
};
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;
}
/* probe video adapters and return the number of detected adapters */
static int
probe_adapters(void)
{
video_info_t info;
/* do this test only once */
if (gdc_init_done)
return 1;
gdc_init_done = TRUE;
biosadapter[0] = adapter_init_value[0];
biosadapter[0].va_flags |= V_ADP_PROBED;
biosadapter[0].va_mode =
biosadapter[0].va_initial_mode = biosadapter[0].va_initial_bios_mode;
master_gdc_wait_vsync();
master_gdc_cmd(_GDC_START); /* text ON */
gdc_wait_vsync();
gdc_cmd(_GDC_STOP); /* graphics OFF */
gdc_get_info(&biosadapter[0], biosadapter[0].va_initial_mode, &info);
biosadapter[0].va_window = BIOS_PADDRTOVADDR(info.vi_window);
biosadapter[0].va_window_size = info.vi_window_size;
biosadapter[0].va_window_gran = info.vi_window_gran;
biosadapter[0].va_buffer = 0;
biosadapter[0].va_buffer_size = 0;
if (info.vi_flags & V_INFO_GRAPHICS) {
switch (info.vi_depth/info.vi_planes) {
case 1:
biosadapter[0].va_line_width = info.vi_width/8;
break;
case 2:
biosadapter[0].va_line_width = info.vi_width/4;
break;
case 4:
biosadapter[0].va_line_width = info.vi_width/2;
break;
case 8:
default: /* shouldn't happen */
biosadapter[0].va_line_width = info.vi_width;
break;
}
} else {
biosadapter[0].va_line_width = info.vi_width;
}
bcopy(&info, &biosadapter[0].va_info, sizeof(info));
return 1;
}
static void master_gdc_cmd(unsigned int cmd)
{
while ( (inb(IO_GDC1) & 2) != 0);
outb(IO_GDC1+2, cmd);
}
static void master_gdc_prm(unsigned int pmtr)
{
while ( (inb(IO_GDC1) & 2) != 0);
outb(IO_GDC1, pmtr);
}
static void master_gdc_word_prm(unsigned int wpmtr)
{
master_gdc_prm(wpmtr & 0x00ff);
master_gdc_prm((wpmtr >> 8) & 0x00ff);
}
static void master_gdc_fifo_empty(void)
{
while ( (inb(IO_GDC1) & 4) == 0);
}
static void master_gdc_wait_vsync(void)
{
while ( (inb(IO_GDC1) & 0x20) != 0);
while ( (inb(IO_GDC1) & 0x20) == 0);
}
static void gdc_cmd(unsigned int cmd)
{
while ( (inb(IO_GDC2) & 2) != 0);
outb( IO_GDC2+2, cmd);
}
static void gdc_prm(unsigned int pmtr)
{
while ( (inb(IO_GDC2) & 2) != 0);
outb( IO_GDC2, pmtr);
}
static void gdc_word_prm(unsigned int wpmtr)
{
gdc_prm(wpmtr & 0x00ff);
gdc_prm((wpmtr >> 8) & 0x00ff);
}
static void gdc_fifo_empty(void)
{
while ( (inb(IO_GDC2) & 0x04) == 0);
}
static void gdc_wait_vsync(void)
{
while ( (inb(IO_GDC2) & 0x20) != 0);
while ( (inb(IO_GDC2) & 0x20) == 0);
}
static int check_gdc_clock(void)
{
if ((inb(IO_SYSPORT) & 0x80) == 0){
return _5MHZ;
} else {
return _2_5MHZ;
}
}
static void initialize_gdc(unsigned int mode)
{
/* start 30line initialize */
int m_mode,s_mode,gdc_clock;
gdc_clock = check_gdc_clock();
if (mode == T25_G400){
m_mode = _25L;
}else{
m_mode = _30L;
}
s_mode = 2*mode+gdc_clock;
gdc_INFO = m_mode;
master_gdc_cmd(_GDC_RESET);
master_gdc_cmd(_GDC_MASTER);
gdc_cmd(_GDC_RESET);
gdc_cmd(_GDC_SLAVE);
/* GDC Master */
master_gdc_cmd(_GDC_SYNC);
master_gdc_prm(0x00); /* flush less */ /* text & graph */
master_gdc_prm(master_param[m_mode][GDC_CR]);
master_gdc_word_prm(((master_param[m_mode][GDC_HFP] << 10)
+ (master_param[m_mode][GDC_VS] << 5)
+ master_param[m_mode][GDC_HS]));
master_gdc_prm(master_param[m_mode][GDC_HBP]);
master_gdc_prm(master_param[m_mode][GDC_VFP]);
master_gdc_word_prm(((master_param[m_mode][GDC_VBP] << 10)
+ (master_param[m_mode][GDC_LF])));
master_gdc_fifo_empty();
master_gdc_cmd(_GDC_PITCH);
master_gdc_prm(MasterPCH);
master_gdc_fifo_empty();
/* GDC slave */
gdc_cmd(_GDC_SYNC);
gdc_prm(0x06);
gdc_prm(slave_param[s_mode][GDC_CR]);
gdc_word_prm((slave_param[s_mode][GDC_HFP] << 10)
+ (slave_param[s_mode][GDC_VS] << 5)
+ (slave_param[s_mode][GDC_HS]));
gdc_prm(slave_param[s_mode][GDC_HBP]);
gdc_prm(slave_param[s_mode][GDC_VFP]);
gdc_word_prm((slave_param[s_mode][GDC_VBP] << 10)
+ (slave_param[s_mode][GDC_LF]));
gdc_fifo_empty();
gdc_cmd(_GDC_PITCH);
gdc_prm(SlavePCH[gdc_clock]);
gdc_fifo_empty();
/* set Master GDC scroll param */
master_gdc_wait_vsync();
master_gdc_wait_vsync();
master_gdc_wait_vsync();
master_gdc_cmd(_GDC_SCROLL);
master_gdc_word_prm(0);
master_gdc_word_prm((master_param[m_mode][GDC_LF] << 4) | 0x0000);
master_gdc_fifo_empty();
/* set Slave GDC scroll param */
gdc_wait_vsync();
gdc_cmd(_GDC_SCROLL);
gdc_word_prm(0);
if (gdc_clock == _5MHZ){
gdc_word_prm((SlaveScrlLF[mode] << 4) | 0x4000);
}else{
gdc_word_prm(SlaveScrlLF[mode] << 4);
}
gdc_fifo_empty();
gdc_word_prm(0);
if (gdc_clock == _5MHZ){
gdc_word_prm((SlaveScrlLF[mode] << 4) | 0x4000);
}else{
gdc_word_prm(SlaveScrlLF[mode] << 4);
}
gdc_fifo_empty();
/* sync start */
gdc_cmd(_GDC_STOP);
gdc_wait_vsync();
gdc_wait_vsync();
gdc_wait_vsync();
master_gdc_cmd(_GDC_START);
}
/* entry points */
static int
gdc_nop(void)
{
return 0;
}
static int
gdc_err(video_adapter_t *adp, ...)
{
return ENODEV;
}
static int
gdc_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
{
probe_adapters();
if (unit >= 1)
return ENXIO;
*adpp = &biosadapter[unit];
return 0;
}
static int
gdc_init(int unit, video_adapter_t *adp, int flags)
{
if ((unit >= 1) || (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;
}
return 0;
}
/*
* get_info():
* Return the video_info structure of the requested video mode.
*/
static int
gdc_get_info(video_adapter_t *adp, int mode, video_info_t *info)
{
int i;
if (!gdc_init_done)
return ENXIO;
mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
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];
info->vi_buffer_size = info->vi_window_size*info->vi_planes;
return 0;
}
}
return EINVAL;
}
/*
* query_mode():
* Find a video mode matching the requested parameters.
* Fields filled with 0 are considered "don't care" fields and
* match any modes.
*/
static int
gdc_query_mode(video_adapter_t *adp, video_info_t *info)
{
video_info_t buf;
int i;
if (!gdc_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 (gdc_get_info(adp, bios_vmode[i].vi_mode, &buf))
continue;
return bios_vmode[i].vi_mode;
}
return -1;
}
/*
* set_mode():
* Change the video mode.
*/
static int
gdc_set_mode(video_adapter_t *adp, int mode)
{
video_info_t info;
prologue(adp, V_ADP_MODECHANGE, ENODEV);
mode = map_gen_mode_num(adp->va_type,
adp->va_flags & V_ADP_COLOR, mode);
if (gdc_get_info(adp, mode, &info))
return EINVAL;
#ifdef LINE30
switch (info.vi_mode) {
case M_PC98_80x25: /* GDC TEXT MODES */
initialize_gdc(T25_G400);
break;
case M_PC98_80x30:
initialize_gdc(T30_G400);
break;
default:
break;
}
#endif
adp->va_mode = mode;
adp->va_flags &= ~V_ADP_COLOR;
adp->va_flags |=
(info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
#if 0
adp->va_crtc_addr =
(adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
#endif
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(info));
/* move hardware cursor out of the way */
(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
return 0;
}
/*
* set_border():
* Change the border color.
*/
static int
gdc_set_border(video_adapter_t *adp, int color)
{
outb(0x6c, color << 4);
return 0;
}
/*
* save_state():
* Read video card register values.
*/
static int
gdc_save_state(video_adapter_t *adp, void *p, size_t size)
{
return ENODEV;
}
/*
* load_state():
* Set video card registers at once.
*/
static int
gdc_load_state(video_adapter_t *adp, void *p)
{
return ENODEV;
}
/*
* read_hw_cursor():
* Read the position of the hardware text cursor.
*/
static int
gdc_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
{
u_int16_t off;
int s;
if (!gdc_init_done)
return ENXIO;
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return ENODEV;
s = spltty();
master_gdc_cmd(0xe0); /* _GDC_CSRR */
while((inb(TEXT_GDC + 0) & 0x1) == 0) {} /* GDC wait */
off = inb(TEXT_GDC + 2); /* EADl */
off |= (inb(TEXT_GDC + 2) << 8); /* EADh */
inb(TEXT_GDC + 2); /* dummy */
inb(TEXT_GDC + 2); /* dummy */
inb(TEXT_GDC + 2); /* dummy */
splx(s);
if (off >= ROW*COL)
off = 0;
*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.
*/
static int
gdc_set_hw_cursor(video_adapter_t *adp, int col, int row)
{
u_int16_t off;
int s;
if (!gdc_init_done)
return ENXIO;
if ((col == -1) && (row == -1)) {
off = -1;
} else {
if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
return ENODEV;
off = row*adp->va_info.vi_width + col;
}
s = spltty();
master_gdc_cmd(0x49); /* _GDC_CSRW */
master_gdc_word_prm(off);
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.
*/
static int
gdc_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
int celsize, int blink)
{
int start;
int end;
int s;
if (!gdc_init_done)
return ENXIO;
start = celsize - (base + height);
end = celsize - base - 1;
/*
* muPD7220 GDC has anomaly that if end == celsize - 1 then start
* must be 0, otherwise the cursor won't be correctly shown
* in the first row in the screen. We shall set end to celsize - 2;
* if end == celsize -1 && start > 0. XXX
*/
if ((end == celsize - 1) && (start > 0))
--end;
s = spltty();
master_gdc_cmd(0x4b); /* _GDC_CSRFORM */
master_gdc_prm(((height > 0) ? 0x80 : 0) /* cursor on/off */
| ((celsize - 1) & 0x1f)); /* cel size */
master_gdc_word_prm(((end & 0x1f) << 11) /* end line */
| (12 << 6) /* blink rate */
| (blink ? 0x20 : 0) /* blink on/off */
| (start & 0x1f)); /* start line */
splx(s);
return 0;
}
/*
* blank_display()
* Put the display in power save/power off mode.
*/
static int
gdc_blank_display(video_adapter_t *adp, int mode)
{
int s;
if (!gdc_init_done)
return ENXIO;
s = splhigh();
switch (mode) {
case V_DISPLAY_SUSPEND:
case V_DISPLAY_STAND_BY:
/*
* FIXME: I don't know how to put the display into `suspend'
* or `stand-by' mode via GDC...
*/
/* FALL THROUGH */
case V_DISPLAY_BLANK:
if (epson_machine_id == 0x20) {
outb(0x43f, 0x42);
outb(0xc17, inb(0xc17) & ~0x08); /* turn off side light */
outb(0xc16, inb(0xc16) & ~0x02); /* turn off back light */
outb(0x43f, 0x40);
} else {
while (!(inb(TEXT_GDC) & 0x20)) /* V-SYNC wait */
;
outb(TEXT_GDC + 2, 0xc); /* text off */
}
break;
case V_DISPLAY_ON:
if (epson_machine_id == 0x20) {
outb(0x43f, 0x42);
outb(0xc17, inb(0xc17) | 0x08);
outb(0xc16, inb(0xc16) | 0x02);
outb(0x43f, 0x40);
} else {
while (!(inb(TEXT_GDC) & 0x20)) /* V-SYNC wait */
;
outb(TEXT_GDC + 2, 0xd); /* text on */
}
break;
}
splx(s);
return 0;
}
/*
* mmap():
* Mmap frame buffer.
*/
static int
gdc_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
{
/* FIXME: is this correct? XXX */
if (offset > VIDEO_BUF_SIZE - PAGE_SIZE)
return -1;
return i386_btop(adp->va_info.vi_window + offset);
}
static int
gdc_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
{
switch (cmd) {
case FBIO_GETWINORG: /* get frame buffer window origin */
*(u_int *)arg = 0;
return 0;
case FBIO_SETWINORG: /* set frame buffer window origin */
case FBIO_SETDISPSTART: /* set display start address */
case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
case FBIO_GETPALETTE: /* get color palette */
case FBIO_SETPALETTE: /* set color palette */
case FBIOGETCMAP: /* get color palette */
case FBIOPUTCMAP: /* set color palette */
return ENODEV;
case FBIOGTYPE: /* get frame buffer type info. */
((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
((struct fbtype *)arg)->fb_cmsize = 0;
else
((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
return 0;
default:
return fb_commonioctl(adp, cmd, arg);
}
}
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.
*/
static int
gdc_diag(video_adapter_t *adp, int level)
{
#if FB_DEBUG > 1
int i;
#endif
if (!gdc_init_done)
return ENXIO;
fb_dump_adp_info(DRIVER_NAME, adp, level);
#if FB_DEBUG > 1
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);
}
#endif
return 0;
}
#endif /* NGDC > 0 */
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