mptable_pci.c revision 128873 
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: head/sys/i386/i386/mptable_pci.c 128873 2004-05-03 14:49:10Z 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
55static int
56mptable_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
67static int
68mptable_hostb_attach(device_t dev)
69{
70
71	device_add_child(dev, "pci", pcib_get_bus(dev));
72	return (bus_generic_attach(dev));
73}
74
75static device_method_t mptable_hostb_methods[] = {
76	/* Device interface */
77	DEVMETHOD(device_probe,		mptable_hostb_probe),
78	DEVMETHOD(device_attach,	mptable_hostb_attach),
79	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
80	DEVMETHOD(device_suspend,	bus_generic_suspend),
81	DEVMETHOD(device_resume,	bus_generic_resume),
82
83	/* Bus interface */
84	DEVMETHOD(bus_print_child,	bus_generic_print_child),
85	DEVMETHOD(bus_read_ivar,	legacy_pcib_read_ivar),
86	DEVMETHOD(bus_write_ivar,	legacy_pcib_write_ivar),
87	DEVMETHOD(bus_alloc_resource,	bus_generic_alloc_resource),
88	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
89	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
90	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
91	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
92	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
93
94	/* pcib interface */
95	DEVMETHOD(pcib_maxslots,	legacy_pcib_maxslots),
96	DEVMETHOD(pcib_read_config,	legacy_pcib_read_config),
97	DEVMETHOD(pcib_write_config,	legacy_pcib_write_config),
98	DEVMETHOD(pcib_route_interrupt,	mptable_pci_route_interrupt),
99
100	{ 0, 0 }
101};
102
103static driver_t mptable_hostb_driver = {
104	"pcib",
105	mptable_hostb_methods,
106	1,
107};
108
109DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, pcib_devclass, 0, 0);
110
111/* PCI to PCI bridge driver. */
112
113static int
114mptable_pcib_probe(device_t dev)
115{
116	int bus;
117
118	if ((pci_get_class(dev) != PCIC_BRIDGE) ||
119	    (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
120		return (ENXIO);
121	bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
122	if (bus == 0)
123		return (ENXIO);
124	if (mptable_pci_probe_table(bus) != 0)
125		return (ENXIO);
126	device_set_desc(dev, "MPTable PCI-PCI bridge");
127	return (-1000);
128}
129
130static device_method_t mptable_pcib_pci_methods[] = {
131	/* Device interface */
132	DEVMETHOD(device_probe,		mptable_pcib_probe),
133	DEVMETHOD(device_attach,	pcib_attach),
134	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
135	DEVMETHOD(device_suspend,	bus_generic_suspend),
136	DEVMETHOD(device_resume,	bus_generic_resume),
137
138	/* Bus interface */
139	DEVMETHOD(bus_print_child,	bus_generic_print_child),
140	DEVMETHOD(bus_read_ivar,	pcib_read_ivar),
141	DEVMETHOD(bus_write_ivar,	pcib_write_ivar),
142	DEVMETHOD(bus_alloc_resource,	pcib_alloc_resource),
143	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
144	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
145	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
146	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
147	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
148
149	/* pcib interface */
150	DEVMETHOD(pcib_maxslots,	pcib_maxslots),
151	DEVMETHOD(pcib_read_config,	pcib_read_config),
152	DEVMETHOD(pcib_write_config,	pcib_write_config),
153	DEVMETHOD(pcib_route_interrupt,	mptable_pci_route_interrupt),
154
155	{0, 0}
156};
157
158static driver_t mptable_pcib_driver = {
159	"pcib",
160	mptable_pcib_pci_methods,
161	sizeof(struct pcib_softc),
162};
163
164DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);
165
166