sys/bus/pci/isa_pci.c

   1 /*-
   2  * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
   3  * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
   4  * Copyright (c) 2000 BSDi
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  * $FreeBSD: src/sys/dev/pci/isa_pci.c,v 1.13.8.1 2009/04/15 03:14:26 kensmith Exp $
  31  */
  32
  33 /*
  34  * PCI:ISA bridge support
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/module.h>
  41 #include <sys/bus.h>
  42
  43 #include <bus/isa/isavar.h>
  44 #include <bus/pci/pcivar.h>
  45 #include <bus/pci/pcireg.h>
  46
  47 static int      isab_probe(device_t dev);
  48
  49 #if 0
  50 int
  51 isab_attach(device_t dev)
  52 {
  53         return ENXIO;
  54 }
  55 #endif
  56
  57 static device_method_t isab_methods[] = {
  58     /* Device interface */
  59     DEVMETHOD(device_probe,             isab_probe),
  60     DEVMETHOD(device_attach,            isab_attach),
  61     DEVMETHOD(device_detach,            bus_generic_detach),
  62     DEVMETHOD(device_shutdown,          bus_generic_shutdown),
  63     DEVMETHOD(device_suspend,           bus_generic_suspend),
  64     DEVMETHOD(device_resume,            bus_generic_resume),
  65
  66     /* Bus interface */
  67     DEVMETHOD(bus_print_child,          bus_generic_print_child),
  68     DEVMETHOD(bus_alloc_resource,       bus_generic_alloc_resource),
  69     DEVMETHOD(bus_release_resource,     bus_generic_release_resource),
  70     DEVMETHOD(bus_activate_resource,    bus_generic_activate_resource),
  71     DEVMETHOD(bus_deactivate_resource,  bus_generic_deactivate_resource),
  72     DEVMETHOD(bus_setup_intr,           bus_generic_setup_intr),
  73     DEVMETHOD(bus_teardown_intr,        bus_generic_teardown_intr),
  74
  75     DEVMETHOD_END
  76 };
  77
  78 static driver_t isab_driver = {
  79     "isab",
  80     isab_methods,
  81     0,
  82 };
  83
  84 devclass_t isab_devclass;
  85
  86 DRIVER_MODULE(isab, pci, isab_driver, isab_devclass, NULL, NULL);
  87
  88 /*
  89  * XXX we need to add a quirk list here for bridges that don't correctly
  90  *     report themselves.
  91  */
  92 static int
  93 isab_probe(device_t dev)
  94 {
  95     int         matched = 0;
  96
  97     /*
  98      * Try for a generic match based on class/subclass.
  99      */
 100     if ((pci_get_class(dev) == PCIC_BRIDGE) &&
 101         (pci_get_subclass(dev) == PCIS_BRIDGE_ISA)) {
 102         matched = 1;
 103     } else {
 104         /*
 105          * These are devices that we *know* are PCI:ISA bridges.
 106          * Sometimes, however, they don't report themselves as
 107          * such.  Check in case one of them is pretending to be
 108          * something else.
 109          */
 110         switch (pci_get_devid(dev)) {
 111         case 0x04848086:        /* Intel 82378ZB/82378IB */
 112         case 0x122e8086:        /* Intel 82371FB */
 113         case 0x70008086:        /* Intel 82371SB */
 114         case 0x71108086:        /* Intel 82371AB */
 115         case 0x71988086:        /* Intel 82443MX */
 116         case 0x24108086:        /* Intel 82801AA (ICH) */
 117         case 0x24208086:        /* Intel 82801AB (ICH0) */
 118         case 0x24408086:        /* Intel 82801AB (ICH2) */
 119         case 0x00061004:        /* VLSI 82C593 */
 120         case 0x05861106:        /* VIA 82C586 */
 121         case 0x05961106:        /* VIA 82C596 */
 122         case 0x06861106:        /* VIA 82C686 */
 123         case 0x153310b9:        /* AcerLabs M1533 */
 124         case 0x154310b9:        /* AcerLabs M1543 */
 125         case 0x00081039:        /* SiS 85c503 */
 126         case 0x00001078:        /* Cyrix Cx5510 */
 127         case 0x01001078:        /* Cyrix Cx5530 */
 128         case 0xc7001045:        /* OPTi 82C700 (FireStar) */
 129         case 0x00011033:        /* NEC 0001 (C-bus) */
 130         case 0x002c1033:        /* NEC 002C (C-bus) */
 131         case 0x003b1033:        /* NEC 003B (C-bus) */
 132         case 0x886a1060:        /* UMC UM8886 ISA */
 133         case 0x02001166:        /* ServerWorks IB6566 PCI */
 134             if (bootverbose)
 135                 kprintf("PCI-ISA bridge with incorrect subclass 0x%x\n",
 136                        pci_get_subclass(dev));
 137             matched = 1;
 138             break;
 139
 140         default:
 141             break;
 142         }
 143     }
 144
 145     if (matched) {
 146         device_set_desc(dev, "PCI-ISA bridge");
 147         return(-10000);
 148     }
 149     return(ENXIO);
 150 }