freebsd-skq/sys/isa/syscons_isa.c
peter 60767a2384 This is a temporary bandaid to get vidconsole working again without
options USERCONFIG being present.  Due to the lack of early boot hints
neither sio or sc would succeed the console probe.  If USERCONFIG was
active, there was a second cninit() after userconfig had run and that
happened to make the console selection work.  If you left out USERCONFIG,
you would end up with no console at all. :-(

This needs a proper fix, especially when sc looses the "at isa" hint.
But for now, this works.
2000-06-15 10:01:12 +00:00

246 lines
5.8 KiB
C

/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE 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.
*
* $FreeBSD$
*/
#include "opt_syscons.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/cons.h>
#include <machine/console.h>
#ifdef __i386__
#include <machine/clock.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <i386/isa/timerreg.h>
#define BIOS_CLKED (1 << 6)
#define BIOS_NLKED (1 << 5)
#define BIOS_SLKED (1 << 4)
#define BIOS_ALKED 0
#endif /* __i386__ */
#include <dev/syscons/syscons.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
static devclass_t sc_devclass;
static int scprobe(device_t dev);
static int scattach(device_t dev);
static int scresume(device_t dev);
static device_method_t sc_methods[] = {
DEVMETHOD(device_probe, scprobe),
DEVMETHOD(device_attach, scattach),
DEVMETHOD(device_resume, scresume),
{ 0, 0 }
};
static driver_t sc_driver = {
SC_DRIVER_NAME,
sc_methods,
sizeof(sc_softc_t),
};
static sc_softc_t main_softc;
static int
scprobe(device_t dev)
{
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
device_set_desc(dev, "System console");
return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
}
static int
scattach(device_t dev)
{
return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
}
static int
scresume(device_t dev)
{
return sc_resume_unit(device_get_unit(dev));
}
int
sc_max_unit(void)
{
return devclass_get_maxunit(sc_devclass);
}
sc_softc_t
*sc_get_softc(int unit, int flags)
{
sc_softc_t *sc;
if (unit < 0)
return NULL;
if (flags & SC_KERNEL_CONSOLE) {
/* FIXME: clear if it is wired to another unit! */
sc = &main_softc;
} else {
sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
if (sc == NULL)
return NULL;
}
sc->unit = unit;
if (!(sc->flags & SC_INIT_DONE)) {
sc->keyboard = -1;
sc->adapter = -1;
sc->cursor_char = SC_CURSOR_CHAR;
sc->mouse_char = SC_MOUSE_CHAR;
}
return sc;
}
sc_softc_t
*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
{
sc_softc_t *sc;
int units;
int i;
sc = &main_softc;
if (((adp == NULL) || (adp == sc->adp))
&& ((kbd == NULL) || (kbd == sc->kbd)))
return sc;
units = devclass_get_maxunit(sc_devclass);
for (i = 0; i < units; ++i) {
sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
if (sc == NULL)
continue;
if (((adp == NULL) || (adp == sc->adp))
&& ((kbd == NULL) || (kbd == sc->kbd)))
return sc;
}
return NULL;
}
int
sc_get_cons_priority(int *unit, int *flags)
{
int disabled;
char *at;
int u, f;
*unit = -1;
for (u = 0; u < 16; u++) {
if ((resource_int_value(SC_DRIVER_NAME, u, "disabled",
&disabled) == 0) && disabled)
continue;
if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
continue;
if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
f = 0;
if (f & SC_KERNEL_CONSOLE) {
/* the user designates this unit to be the console */
*unit = u;
*flags = f;
break;
}
if (*unit < 0) {
/* ...otherwise remember the first found unit */
*unit = u;
*flags = f;
}
}
if (*unit < 0)
return CN_DEAD;
#if 0
return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL);
#endif
return CN_INTERNAL;
}
void
sc_get_bios_values(bios_values_t *values)
{
#ifdef __i386__
u_int8_t shift;
values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461);
values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460);
shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417);
values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0)
| ((shift & BIOS_NLKED) ? NLKED : 0)
| ((shift & BIOS_SLKED) ? SLKED : 0)
| ((shift & BIOS_ALKED) ? ALKED : 0);
values->bell_pitch = BELL_PITCH;
#else /* !__i386__ */
values->cursor_start = 0;
values->cursor_end = 32;
values->shift_state = 0;
values->bell_pitch = BELL_PITCH;
#endif /* __i386__ */
}
int
sc_tone(int herz)
{
#ifdef __i386__
int pitch;
if (herz) {
/* set command for counter 2, 2 byte write */
if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE))
return EBUSY;
/* set pitch */
pitch = timer_freq/herz;
outb(TIMER_CNTR2, pitch);
outb(TIMER_CNTR2, pitch >> 8);
/* enable counter 2 output to speaker */
outb(IO_PPI, inb(IO_PPI) | 3);
} else {
/* disable counter 2 output to speaker */
outb(IO_PPI, inb(IO_PPI) & 0xFC);
release_timer2();
}
#endif /* __i386__ */
return 0;
}
DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);