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/i386/i386/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/5.2/sys/i386/i386/mptable_pci.c 121991 2003-11-03 22:12:37Z jhb $");
   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 device_method_t mptable_hostb_methods[] = {
   68         /* Device interface */
   69         DEVMETHOD(device_probe,         mptable_hostb_probe),
   70         DEVMETHOD(device_attach,        legacy_pcib_attach),
   71         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   72         DEVMETHOD(device_suspend,       bus_generic_suspend),
   73         DEVMETHOD(device_resume,        bus_generic_resume),
   74 
   75         /* Bus interface */
   76         DEVMETHOD(bus_print_child,      bus_generic_print_child),
   77         DEVMETHOD(bus_read_ivar,        legacy_pcib_read_ivar),
   78         DEVMETHOD(bus_write_ivar,       legacy_pcib_write_ivar),
   79         DEVMETHOD(bus_alloc_resource,   bus_generic_alloc_resource),
   80         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
   81         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   82         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   83         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   84         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   85 
   86         /* pcib interface */
   87         DEVMETHOD(pcib_maxslots,        legacy_pcib_maxslots),
   88         DEVMETHOD(pcib_read_config,     legacy_pcib_read_config),
   89         DEVMETHOD(pcib_write_config,    legacy_pcib_write_config),
   90         DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
   91 
   92         { 0, 0 }
   93 };
   94 
   95 static driver_t mptable_hostb_driver = {
   96         "pcib",
   97         mptable_hostb_methods,
   98         1,
   99 };
  100 
  101 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, pcib_devclass, 0, 0);
  102 
  103 /* PCI to PCI bridge driver. */
  104 
  105 static int
  106 mptable_pcib_probe(device_t dev)
  107 {
  108         int bus;
  109 
  110         if ((pci_get_class(dev) != PCIC_BRIDGE) ||
  111             (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
  112                 return (ENXIO);
  113         bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
  114         if (bus == 0)
  115                 return (ENXIO);
  116         if (mptable_pci_probe_table(bus) != 0)
  117                 return (ENXIO);
  118         device_set_desc(dev, "MPTable PCI-PCI bridge");
  119         return (-1000);
  120 }
  121 
  122 static device_method_t mptable_pcib_pci_methods[] = {
  123         /* Device interface */
  124         DEVMETHOD(device_probe,         mptable_pcib_probe),
  125         DEVMETHOD(device_attach,        pcib_attach),
  126         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  127         DEVMETHOD(device_suspend,       bus_generic_suspend),
  128         DEVMETHOD(device_resume,        bus_generic_resume),
  129 
  130         /* Bus interface */
  131         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  132         DEVMETHOD(bus_read_ivar,        pcib_read_ivar),
  133         DEVMETHOD(bus_write_ivar,       pcib_write_ivar),
  134         DEVMETHOD(bus_alloc_resource,   pcib_alloc_resource),
  135         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
  136         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
  137         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
  138         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
  139         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  140 
  141         /* pcib interface */
  142         DEVMETHOD(pcib_maxslots,        pcib_maxslots),
  143         DEVMETHOD(pcib_read_config,     pcib_read_config),
  144         DEVMETHOD(pcib_write_config,    pcib_write_config),
  145         DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
  146 
  147         {0, 0}
  148 };
  149 
  150 static driver_t mptable_pcib_driver = {
  151         "pcib",
  152         mptable_pcib_pci_methods,
  153         sizeof(struct pcib_softc),
  154 };
  155 
  156 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);
  157 

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