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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