sys/dev/acpica5/acpi_pcib_pci.c

   1 /*-
   2  * Copyright (c) 2000 Michael Smith
   3  * Copyright (c) 2000 BSDi
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/dev/acpica/acpi_pcib_pci.c,v 1.9 2004/05/30 20:08:23 phk Exp $
  28  * $DragonFly: src/sys/dev/acpica5/acpi_pcib_pci.c,v 1.5 2008/08/02 01:14:41 dillon Exp $
  29  */
  30
  31 #include "opt_acpi.h"
  32
  33 #include <sys/param.h>
  34 #include <sys/bus.h>
  35 #include <sys/kernel.h>
  36 #include <sys/malloc.h>
  37 #include <sys/module.h>
  38
  39 #include "acpi.h"
  40 #include "accommon.h"
  41 #include "acpivar.h"
  42 #include "acpi_pcibvar.h"
  43
  44 #include <bus/pci/pci_cfgreg.h>
  45 #include <bus/pci/pcivar.h>
  46 #include <bus/pci/pcireg.h>
  47 #include <bus/pci/pcib_private.h>
  48 #include "pcib_if.h"
  49
  50 /* Hooks for the ACPI CA debugging infrastructure. */
  51 #define _COMPONENT      ACPI_BUS
  52 ACPI_MODULE_NAME("PCI_PCI")
  53
  54 struct acpi_pcib_softc {
  55     struct pcib_softc   ap_pcibsc;
  56     ACPI_HANDLE         ap_handle;
  57     ACPI_BUFFER         ap_prt;         /* interrupt routing table */
  58 };
  59
  60 struct acpi_pcib_lookup_info {
  61     UINT32              address;
  62     ACPI_HANDLE         handle;
  63 };
  64
  65 static devclass_t pcib_devclass;
  66
  67 static int              acpi_pcib_pci_probe(device_t bus);
  68 static int              acpi_pcib_pci_attach(device_t bus);
  69 static int              acpi_pcib_pci_resume(device_t bus);
  70 static int              acpi_pcib_read_ivar(device_t dev, device_t child,
  71                             int which, uintptr_t *result);
  72 static int              acpi_pcib_pci_route_interrupt(device_t pcib,
  73                             device_t dev, int pin);
  74
  75 static device_method_t acpi_pcib_pci_methods[] = {
  76     /* Device interface */
  77     DEVMETHOD(device_probe,             acpi_pcib_pci_probe),
  78     DEVMETHOD(device_attach,            acpi_pcib_pci_attach),
  79     DEVMETHOD(device_shutdown,          bus_generic_shutdown),
  80     DEVMETHOD(device_suspend,           bus_generic_suspend),
  81     DEVMETHOD(device_resume,            acpi_pcib_pci_resume),
  82
  83     /* Bus interface */
  84     DEVMETHOD(bus_print_child,          bus_generic_print_child),
  85     DEVMETHOD(bus_read_ivar,            acpi_pcib_read_ivar),
  86     DEVMETHOD(bus_write_ivar,           pcib_write_ivar),
  87     DEVMETHOD(bus_alloc_resource,       pcib_alloc_resource),
  88     DEVMETHOD(bus_release_resource,     bus_generic_release_resource),
  89     DEVMETHOD(bus_activate_resource,    bus_generic_activate_resource),
  90     DEVMETHOD(bus_deactivate_resource,  bus_generic_deactivate_resource),
  91     DEVMETHOD(bus_setup_intr,           bus_generic_setup_intr),
  92     DEVMETHOD(bus_teardown_intr,        bus_generic_teardown_intr),
  93
  94     /* pcib interface */
  95     DEVMETHOD(pcib_maxslots,            pcib_maxslots),
  96     DEVMETHOD(pcib_read_config,         pcib_read_config),
  97     DEVMETHOD(pcib_write_config,        pcib_write_config),
  98     DEVMETHOD(pcib_route_interrupt,     acpi_pcib_pci_route_interrupt),
  99
 100     {0, 0}
 101 };
 102
 103 static driver_t acpi_pcib_pci_driver = {
 104     "pcib",
 105     acpi_pcib_pci_methods,
 106     sizeof(struct acpi_pcib_softc),
 107 };
 108
 109 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
 110 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
 111
 112 static int
 113 acpi_pcib_pci_probe(device_t dev)
 114 {
 115     if (pci_get_class(dev) != PCIC_BRIDGE ||
 116         pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
 117         !acpi_enabled("pci"))
 118         return (ENXIO);
 119     if (acpi_get_handle(dev) == NULL)
 120         return (ENXIO);
 121     if (pci_cfgregopen() == 0)
 122         return (ENXIO);
 123
 124     device_set_desc(dev, "ACPI PCI-PCI bridge");
 125     return (-1000);
 126 }
 127
 128 static int
 129 acpi_pcib_pci_attach(device_t dev)
 130 {
 131     struct acpi_pcib_softc *sc;
 132
 133     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
 134
 135     pcib_attach_common(dev);
 136     sc = device_get_softc(dev);
 137     sc->ap_handle = acpi_get_handle(dev);
 138     return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
 139 }
 140
 141 static int
 142 acpi_pcib_pci_resume(device_t dev)
 143 {
 144     struct acpi_pcib_softc *sc = device_get_softc(dev);
 145
 146     return (acpi_pcib_resume(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
 147 }
 148
 149 static int
 150 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 151 {
 152     struct acpi_pcib_softc *sc = device_get_softc(dev);
 153
 154     switch (which) {
 155     case ACPI_IVAR_HANDLE:
 156         *result = (uintptr_t)sc->ap_handle;
 157         return (0);
 158     }
 159     return (pcib_read_ivar(dev, child, which, result));
 160 }
 161
 162 static int
 163 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
 164 {
 165     struct acpi_pcib_softc *sc;
 166
 167     sc = device_get_softc(pcib);
 168
 169     /*
 170      * If we don't have a _PRT, fall back to the swizzle method
 171      * for routing interrupts.
 172      */
 173     if (sc->ap_prt.Pointer == NULL)
 174         return (pcib_route_interrupt(pcib, dev, pin));
 175     else
 176         return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
 177 }