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 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 /* 35 * PCI:ISA bridge support 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 #include <sys/bus.h> 43 44 #include <isa/isavar.h> 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcireg.h> 47 48 static int isab_probe(device_t dev); 49 50 static device_method_t isab_methods[] = { 51 /* Device interface */ 52 DEVMETHOD(device_probe, isab_probe), 53 DEVMETHOD(device_attach, isab_attach), 54 DEVMETHOD(device_detach, bus_generic_detach), 55 DEVMETHOD(device_shutdown, bus_generic_shutdown), 56 DEVMETHOD(device_suspend, bus_generic_suspend), 57 DEVMETHOD(device_resume, bus_generic_resume), 58 59 /* Bus interface */ 60 DEVMETHOD(bus_print_child, bus_generic_print_child), 61 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 62 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 63 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 64 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 65 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 66 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 67 68 { 0, 0 } 69 }; 70 71 static driver_t isab_driver = { 72 "isab", 73 isab_methods, 74 0, 75 }; 76 77 DRIVER_MODULE(isab, pci, isab_driver, isab_devclass, 0, 0); 78 79 /* 80 * XXX we need to add a quirk list here for bridges that don't correctly 81 * report themselves. 82 */ 83 static int 84 isab_probe(device_t dev) 85 { 86 int matched = 0; 87 88 /* 89 * Try for a generic match based on class/subclass. 90 */ 91 if ((pci_get_class(dev) == PCIC_BRIDGE) && 92 (pci_get_subclass(dev) == PCIS_BRIDGE_ISA)) { 93 matched = 1; 94 } else { 95 /* 96 * These are devices that we *know* are PCI:ISA bridges. 97 * Sometimes, however, they don't report themselves as 98 * such. Check in case one of them is pretending to be 99 * something else. 100 */ 101 switch (pci_get_devid(dev)) { 102 case 0x04848086: /* Intel 82378ZB/82378IB */ 103 case 0x122e8086: /* Intel 82371FB */ 104 case 0x70008086: /* Intel 82371SB */ 105 case 0x71108086: /* Intel 82371AB */ 106 case 0x71988086: /* Intel 82443MX */ 107 case 0x24108086: /* Intel 82801AA (ICH) */ 108 case 0x24208086: /* Intel 82801AB (ICH0) */ 109 case 0x24408086: /* Intel 82801AB (ICH2) */ 110 case 0x00061004: /* VLSI 82C593 */ 111 case 0x05861106: /* VIA 82C586 */ 112 case 0x05961106: /* VIA 82C596 */ 113 case 0x06861106: /* VIA 82C686 */ 114 case 0x153310b9: /* AcerLabs M1533 */ 115 case 0x154310b9: /* AcerLabs M1543 */ 116 case 0x00081039: /* SiS 85c503 */ 117 case 0x00001078: /* Cyrix Cx5510 */ 118 case 0x01001078: /* Cyrix Cx5530 */ 119 case 0xc7001045: /* OPTi 82C700 (FireStar) */ 120 case 0x00011033: /* NEC 0001 (C-bus) */ 121 case 0x002c1033: /* NEC 002C (C-bus) */ 122 case 0x003b1033: /* NEC 003B (C-bus) */ 123 case 0x886a1060: /* UMC UM8886 ISA */ 124 case 0x02001166: /* ServerWorks IB6566 PCI */ 125 if (bootverbose) 126 printf("PCI-ISA bridge with incorrect subclass 0x%x\n", 127 pci_get_subclass(dev)); 128 matched = 1; 129 break; 130 131 default: 132 break; 133 } 134 } 135 136 if (matched) { 137 device_set_desc(dev, "PCI-ISA bridge"); 138 return(-10000); 139 } 140 return(ENXIO); 141 } 142