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
isab_probe(device_t dev)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