The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpi_pcib_pci.c

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    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 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   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 <contrib/dev/acpica/acpi.h>
   40 #include <dev/acpica/acpivar.h>
   41 #include <dev/acpica/acpi_pcibvar.h>
   42 
   43 #include <machine/pci_cfgreg.h>
   44 #include <dev/pci/pcivar.h>
   45 #include <dev/pci/pcireg.h>
   46 #include <dev/pci/pcib_private.h>
   47 #include "pcib_if.h"
   48 
   49 /* Hooks for the ACPI CA debugging infrastructure. */
   50 #define _COMPONENT      ACPI_BUS
   51 ACPI_MODULE_NAME("PCI_PCI")
   52 
   53 struct acpi_pcib_softc {
   54     struct pcib_softc   ap_pcibsc;
   55     ACPI_HANDLE         ap_handle;
   56     ACPI_BUFFER         ap_prt;         /* interrupt routing table */
   57 };
   58 
   59 struct acpi_pcib_lookup_info {
   60     UINT32              address;
   61     ACPI_HANDLE         handle;
   62 };
   63 
   64 static int              acpi_pcib_pci_probe(device_t bus);
   65 static int              acpi_pcib_pci_attach(device_t bus);
   66 static int              acpi_pcib_pci_resume(device_t bus);
   67 static int              acpi_pcib_read_ivar(device_t dev, device_t child,
   68                             int which, uintptr_t *result);
   69 static int              acpi_pcib_pci_route_interrupt(device_t pcib,
   70                             device_t dev, int pin);
   71 
   72 static device_method_t acpi_pcib_pci_methods[] = {
   73     /* Device interface */
   74     DEVMETHOD(device_probe,             acpi_pcib_pci_probe),
   75     DEVMETHOD(device_attach,            acpi_pcib_pci_attach),
   76     DEVMETHOD(device_shutdown,          bus_generic_shutdown),
   77     DEVMETHOD(device_suspend,           bus_generic_suspend),
   78     DEVMETHOD(device_resume,            acpi_pcib_pci_resume),
   79 
   80     /* Bus interface */
   81     DEVMETHOD(bus_print_child,          bus_generic_print_child),
   82     DEVMETHOD(bus_read_ivar,            acpi_pcib_read_ivar),
   83     DEVMETHOD(bus_write_ivar,           pcib_write_ivar),
   84     DEVMETHOD(bus_alloc_resource,       pcib_alloc_resource),
   85     DEVMETHOD(bus_release_resource,     bus_generic_release_resource),
   86     DEVMETHOD(bus_activate_resource,    bus_generic_activate_resource),
   87     DEVMETHOD(bus_deactivate_resource,  bus_generic_deactivate_resource),
   88     DEVMETHOD(bus_setup_intr,           bus_generic_setup_intr),
   89     DEVMETHOD(bus_teardown_intr,        bus_generic_teardown_intr),
   90 
   91     /* pcib interface */
   92     DEVMETHOD(pcib_maxslots,            pcib_maxslots),
   93     DEVMETHOD(pcib_read_config,         pcib_read_config),
   94     DEVMETHOD(pcib_write_config,        pcib_write_config),
   95     DEVMETHOD(pcib_route_interrupt,     acpi_pcib_pci_route_interrupt),
   96     DEVMETHOD(pcib_alloc_msi,           pcib_alloc_msi),
   97     DEVMETHOD(pcib_release_msi,         pcib_release_msi),
   98     DEVMETHOD(pcib_alloc_msix,          pcib_alloc_msix),
   99     DEVMETHOD(pcib_release_msix,        pcib_release_msix),
  100     DEVMETHOD(pcib_map_msi,             pcib_map_msi),
  101 
  102     {0, 0}
  103 };
  104 
  105 static devclass_t pcib_devclass;
  106 
  107 DEFINE_CLASS_0(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
  108     sizeof(struct acpi_pcib_softc));
  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 
  116     if (pci_get_class(dev) != PCIC_BRIDGE ||
  117         pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
  118         acpi_disabled("pci"))
  119         return (ENXIO);
  120     if (acpi_get_handle(dev) == NULL)
  121         return (ENXIO);
  122     if (pci_cfgregopen() == 0)
  123         return (ENXIO);
  124 
  125     device_set_desc(dev, "ACPI PCI-PCI bridge");
  126     return (-1000);
  127 }
  128 
  129 static int
  130 acpi_pcib_pci_attach(device_t dev)
  131 {
  132     struct acpi_pcib_softc *sc;
  133 
  134     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
  135 
  136     pcib_attach_common(dev);
  137     sc = device_get_softc(dev);
  138     sc->ap_handle = acpi_get_handle(dev);
  139     return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
  140 }
  141 
  142 static int
  143 acpi_pcib_pci_resume(device_t dev)
  144 {
  145 
  146     return (acpi_pcib_resume(dev));
  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 }

Cache object: f3d21e6f91f2396daeb1b661dc290ea2


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