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 } 151