text: /*-
   * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
   * 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
   *
   * $FreeBSD: src/sys/dev/acpica/acpi_isab.c,v 1.11 2009/06/05 18:44:36 jkim
   */
  
  /*
   * ISA Bridge driver for Generic ISA Bus Devices.  See section 10.7 of the
   * ACPI 2.0a specification for details on this device.
   */
  
  #include "opt_acpi.h"
  #include <sys/param.h>
  #include <sys/bus.h>
  #include <sys/kernel.h>
  #include <sys/malloc.h>
  #include <sys/module.h>
  
  #include "acpi.h"
  #include "accommon.h"
  
  #include <dev/acpica/acpivar.h>
  #include <bus/isa/isavar.h>
  
  /* Hooks for the ACPI CA debugging infrastructure. */
  #define _COMPONENT	ACPI_BUS
  ACPI_MODULE_NAME("ISA_ACPI")
  
  struct acpi_isab_softc {
  	device_t	ap_dev;
  	ACPI_HANDLE	ap_handle;
  };
  
  static int	acpi_isab_probe(device_t bus);
  static int	acpi_isab_attach(device_t bus);
  static int	acpi_isab_read_ivar(device_t dev, device_t child, int which,
  		    uintptr_t *result);
  
  static device_method_t acpi_isab_methods[] = {
  	/* Device interface */
  	DEVMETHOD(device_probe,		acpi_isab_probe),
  	DEVMETHOD(device_attach,	acpi_isab_attach),
  	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
  	DEVMETHOD(device_suspend,	bus_generic_suspend),
  	DEVMETHOD(device_resume,	bus_generic_resume),
  
  	/* Bus interface */
  	DEVMETHOD(bus_print_child,	bus_generic_print_child),
  	DEVMETHOD(bus_read_ivar,	acpi_isab_read_ivar),
  	DEVMETHOD(bus_alloc_resource,	bus_generic_alloc_resource),
  	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
  	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
  	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
  	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
  	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
  
  	DEVMETHOD_END
  };
  
  static driver_t acpi_isab_driver = {
  	"isab",
  	acpi_isab_methods,
  	sizeof(struct acpi_isab_softc),
  };
  
  DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, isab_devclass, NULL, NULL);
  MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1);
  
  static int
  acpi_isab_probe(device_t dev)
  {
  	static char *isa_ids[] = { "PNP0A05", "PNP0A06", NULL };
  
  	if (acpi_disabled("isab") ||
  	    ACPI_ID_PROBE(device_get_parent(dev), dev, isa_ids) == NULL ||
  	    devclass_get_device(isab_devclass, 0) != dev)
  		return (ENXIO);
  
  	device_set_desc(dev, "ACPI Generic ISA bridge");
  	return (0);
  }
  
  static int
  acpi_isab_attach(device_t dev)
  {
  	struct acpi_isab_softc *sc;
  
  	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
  
  	sc = device_get_softc(dev);
  	sc->ap_dev = dev;
  	sc->ap_handle = acpi_get_handle(dev);
  
  	return (isab_attach(dev));
  }
  
  static int
  acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
  {
  	struct acpi_isab_softc *sc = device_get_softc(dev);
  
  	switch (which) {
  	case ACPI_IVAR_HANDLE:
  		*result = (uintptr_t)sc->ap_handle;
  		return (0);
  	}
  	return (ENOENT);
  }
  