sys/dev/acpica5/acpi_isab.c

   1 /*-
   2  * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/acpica/acpi_isab.c,v 1.8 2004/06/13 22:52:30 njl Exp $
  27  * $DragonFly: src/sys/dev/acpica5/acpi_isab.c,v 1.4 2007/10/23 03:04:48 y0netan1 Exp $
  28  */
  29
  30 /*
  31  * ISA Bridge driver for Generic ISA Bus Devices.  See section 10.7 of the
  32  * ACPI 2.0a specification for details on this device.
  33  */
  34
  35 #include "opt_acpi.h"
  36 #include <sys/param.h>
  37 #include <sys/bus.h>
  38 #include <sys/kernel.h>
  39 #include <sys/malloc.h>
  40 #include <sys/module.h>
  41
  42 #include "acpi.h"
  43 #include "acpivar.h"
  44 #include <bus/isa/isavar.h>
  45
  46 /* Hooks for the ACPI CA debugging infrastructure. */
  47 #define _COMPONENT      ACPI_BUS
  48 ACPI_MODULE_NAME("ISA_ACPI")
  49
  50 struct acpi_isab_softc {
  51         device_t        ap_dev;
  52         ACPI_HANDLE     ap_handle;
  53 };
  54
  55 static int      acpi_isab_probe(device_t bus);
  56 static int      acpi_isab_attach(device_t bus);
  57 static int      acpi_isab_read_ivar(device_t dev, device_t child, int which,
  58                     uintptr_t *result);
  59
  60 static device_method_t acpi_isab_methods[] = {
  61         /* Device interface */
  62         DEVMETHOD(device_probe,         acpi_isab_probe),
  63         DEVMETHOD(device_attach,        acpi_isab_attach),
  64         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  65         DEVMETHOD(device_suspend,       bus_generic_suspend),
  66         DEVMETHOD(device_resume,        bus_generic_resume),
  67
  68         /* Bus interface */
  69         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  70         DEVMETHOD(bus_read_ivar,        acpi_isab_read_ivar),
  71         DEVMETHOD(bus_alloc_resource,   bus_generic_alloc_resource),
  72         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
  73         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
  74         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
  75         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
  76         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  77
  78         {0, 0}
  79 };
  80
  81 static driver_t acpi_isab_driver = {
  82         "isab",
  83         acpi_isab_methods,
  84         sizeof(struct acpi_isab_softc),
  85 };
  86
  87 DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, isab_devclass, 0, 0);
  88 MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1);
  89
  90 static int
  91 acpi_isab_probe(device_t dev)
  92 {
  93         ACPI_HANDLE h;
  94
  95         h = acpi_get_handle(dev);
  96         if (acpi_get_type(dev) == ACPI_TYPE_DEVICE &&
  97             !acpi_disabled("isa") &&
  98             devclass_get_device(isab_devclass, 0) == dev &&
  99             (acpi_MatchHid(h, "PNP0A05") || acpi_MatchHid(h, "PNP0A06"))) {
 100                 device_set_desc(dev, "ACPI Generic ISA bridge");
 101                 return (0);
 102         }
 103         return (ENXIO);
 104 }
 105
 106 static int
 107 acpi_isab_attach(device_t dev)
 108 {
 109         struct acpi_isab_softc *sc;
 110
 111         ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 112
 113         sc = device_get_softc(dev);
 114         sc->ap_dev = dev;
 115         sc->ap_handle = acpi_get_handle(dev);
 116
 117         return (isab_attach(dev));
 118 }
 119
 120 static int
 121 acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 122 {
 123         struct acpi_isab_softc *sc = device_get_softc(dev);
 124
 125         switch (which) {
 126         case ACPI_IVAR_HANDLE:
 127                 *result = (uintptr_t)sc->ap_handle;
 128                 return (0);
 129         }
 130         return (ENOENT);
 131 }