text: /*-
   * Copyright (c) 1999 FreeBSD(98) Porting 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.
   *
   * 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.
   */
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: releng/9.3/sys/pc98/cbus/syscons_cbus.c 221708 2011-05-09 18:46:49Z jkim $");
  
  #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 <sys/consio.h>
  #include <sys/sysctl.h>
  
  #include <machine/clock.h>
  
  #include <pc98/pc98/pc98_machdep.h>
  
  #include <dev/syscons/syscons.h>
  
  #include <isa/isavar.h>
  
  static devclass_t	sc_devclass;
  
  static sc_softc_t	main_softc;
  
  static void
  scidentify(driver_t *driver, device_t parent)
  {
  
  	BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
  }
  
  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));
  }
  
  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) != 0) {
  		/* FIXME: clear if it is wired to another unit! */
  		sc = &main_softc;
  	} else {
  	        sc = device_get_softc(devclass_get_device(sc_devclass, unit));
  		if (sc == NULL)
  			return (NULL);
  	}
  	sc->unit = unit;
  	if ((sc->flags & SC_INIT_DONE) == 0) {
  		sc->keyboard = -1;
  		sc->adapter = -1;
  		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 i;
  	int units;
  
  	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 = 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)
  {
  	const char *at;
  	int f, u;
  
  	*unit = -1;
  	for (u = 0; u < 16; u++) {
  		if (resource_disabled(SC_DRIVER_NAME, u))
  			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) {
  		*unit = 0;
  		*flags = 0;
  	}
  	return (CN_INTERNAL);
  }
  
  void
  sc_get_bios_values(bios_values_t *values)
  {
  	values->cursor_start = 15;
  	values->cursor_end = 16;
  	values->shift_state = 0;
  	values->bell_pitch = BELL_PITCH;
  }
  
  int
  sc_tone(int herz)
  {
  
  	if (herz) {
  		if (timer_spkr_acquire())
  			return (EBUSY);
  		timer_spkr_setfreq(herz);
  	} else
  		timer_spkr_release();
  
  	return (0);
  }
  
  static device_method_t sc_methods[] = {
  	DEVMETHOD(device_identify,	scidentify),
  	DEVMETHOD(device_probe,         scprobe),
  	DEVMETHOD(device_attach,        scattach),
  	{ 0, 0 }
  };
  
  static driver_t sc_driver = {
  	SC_DRIVER_NAME,
  	sc_methods,
  	sizeof(sc_softc_t),
  };
  
  DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
  