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/amd64/amd64/mptable_pci.c

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    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  * 3. Neither the name of the author nor the names of any co-contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 /*
   31  * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
   32  * interrupts from PCI devices to I/O APICs.
   33  */
   34 
   35 #include <sys/cdefs.h>
   36 __FBSDID("$FreeBSD: releng/6.1/sys/amd64/amd64/mptable_pci.c 158179 2006-04-30 16:44:43Z cvs2svn $");
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/bus.h>
   41 #include <sys/kernel.h>
   42 #include <sys/module.h>
   43 
   44 #include <dev/pci/pcireg.h>
   45 #include <dev/pci/pcivar.h>
   46 #include <dev/pci/pcib_private.h>
   47 #include <machine/legacyvar.h>
   48 #include <machine/mptable.h>
   49 #include <machine/pci_cfgreg.h>
   50 
   51 #include "pcib_if.h"
   52 
   53 /* Host to PCI bridge driver. */
   54 
   55 static int
   56 mptable_hostb_probe(device_t dev)
   57 {
   58 
   59         if (pci_cfgregopen() == 0)
   60                 return (ENXIO);
   61         if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
   62                 return (ENXIO);
   63         device_set_desc(dev, "MPTable Host-PCI bridge");
   64         return (0);
   65 }
   66 
   67 static int
   68 mptable_hostb_attach(device_t dev)
   69 {
   70 
   71         device_add_child(dev, "pci", pcib_get_bus(dev));
   72         return (bus_generic_attach(dev));
   73 }
   74 
   75 static device_method_t mptable_hostb_methods[] = {
   76         /* Device interface */
   77         DEVMETHOD(device_probe,         mptable_hostb_probe),
   78         DEVMETHOD(device_attach,        mptable_hostb_attach),
   79         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   80         DEVMETHOD(device_suspend,       bus_generic_suspend),
   81         DEVMETHOD(device_resume,        bus_generic_resume),
   82 
   83         /* Bus interface */
   84         DEVMETHOD(bus_print_child,      bus_generic_print_child),
   85         DEVMETHOD(bus_read_ivar,        legacy_pcib_read_ivar),
   86         DEVMETHOD(bus_write_ivar,       legacy_pcib_write_ivar),
   87         DEVMETHOD(bus_alloc_resource,   legacy_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,        legacy_pcib_maxslots),
   96         DEVMETHOD(pcib_read_config,     legacy_pcib_read_config),
   97         DEVMETHOD(pcib_write_config,    legacy_pcib_write_config),
   98         DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
   99 
  100         { 0, 0 }
  101 };
  102 
  103 static driver_t mptable_hostb_driver = {
  104         "pcib",
  105         mptable_hostb_methods,
  106         1,
  107 };
  108 
  109 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, pcib_devclass, 0, 0);
  110 
  111 /* PCI to PCI bridge driver. */
  112 
  113 static int
  114 mptable_pcib_probe(device_t dev)
  115 {
  116         int bus;
  117 
  118         if ((pci_get_class(dev) != PCIC_BRIDGE) ||
  119             (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
  120                 return (ENXIO);
  121         bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
  122         if (bus == 0)
  123                 return (ENXIO);
  124         if (mptable_pci_probe_table(bus) != 0)
  125                 return (ENXIO);
  126         device_set_desc(dev, "MPTable PCI-PCI bridge");
  127         return (-1000);
  128 }
  129 
  130 static device_method_t mptable_pcib_pci_methods[] = {
  131         /* Device interface */
  132         DEVMETHOD(device_probe,         mptable_pcib_probe),
  133         DEVMETHOD(device_attach,        pcib_attach),
  134         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  135         DEVMETHOD(device_suspend,       bus_generic_suspend),
  136         DEVMETHOD(device_resume,        bus_generic_resume),
  137 
  138         /* Bus interface */
  139         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  140         DEVMETHOD(bus_read_ivar,        pcib_read_ivar),
  141         DEVMETHOD(bus_write_ivar,       pcib_write_ivar),
  142         DEVMETHOD(bus_alloc_resource,   pcib_alloc_resource),
  143         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
  144         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
  145         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
  146         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
  147         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  148 
  149         /* pcib interface */
  150         DEVMETHOD(pcib_maxslots,        pcib_maxslots),
  151         DEVMETHOD(pcib_read_config,     pcib_read_config),
  152         DEVMETHOD(pcib_write_config,    pcib_write_config),
  153         DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
  154 
  155         {0, 0}
  156 };
  157 
  158 static driver_t mptable_pcib_driver = {
  159         "pcib",
  160         mptable_pcib_pci_methods,
  161         sizeof(struct pcib_softc),
  162 };
  163 
  164 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);
  165 

Cache object: efe46245c62cdeec49f0b44a943e2c27


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