1 /*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/8.1/sys/dev/acpica/acpi_pcib_pci.c 193530 2009-06-05 18:44:36Z jkim $");
30
31 #include "opt_acpi.h"
32
33 #include <sys/param.h>
34 #include <sys/bus.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
38
39 #include <contrib/dev/acpica/include/acpi.h>
40 #include <contrib/dev/acpica/include/accommon.h>
41
42 #include <dev/acpica/acpivar.h>
43 #include <dev/acpica/acpi_pcibvar.h>
44
45 #include <machine/pci_cfgreg.h>
46 #include <dev/pci/pcivar.h>
47 #include <dev/pci/pcireg.h>
48 #include <dev/pci/pcib_private.h>
49 #include "pcib_if.h"
50
51 /* Hooks for the ACPI CA debugging infrastructure. */
52 #define _COMPONENT ACPI_BUS
53 ACPI_MODULE_NAME("PCI_PCI")
54
55 struct acpi_pcib_softc {
56 struct pcib_softc ap_pcibsc;
57 ACPI_HANDLE ap_handle;
58 ACPI_BUFFER ap_prt; /* interrupt routing table */
59 };
60
61 struct acpi_pcib_lookup_info {
62 UINT32 address;
63 ACPI_HANDLE handle;
64 };
65
66 static int acpi_pcib_pci_probe(device_t bus);
67 static int acpi_pcib_pci_attach(device_t bus);
68 static int acpi_pcib_pci_resume(device_t bus);
69 static int acpi_pcib_read_ivar(device_t dev, device_t child,
70 int which, uintptr_t *result);
71 static int acpi_pcib_pci_route_interrupt(device_t pcib,
72 device_t dev, int pin);
73
74 static device_method_t acpi_pcib_pci_methods[] = {
75 /* Device interface */
76 DEVMETHOD(device_probe, acpi_pcib_pci_probe),
77 DEVMETHOD(device_attach, acpi_pcib_pci_attach),
78 DEVMETHOD(device_shutdown, bus_generic_shutdown),
79 DEVMETHOD(device_suspend, bus_generic_suspend),
80 DEVMETHOD(device_resume, acpi_pcib_pci_resume),
81
82 /* Bus interface */
83 DEVMETHOD(bus_print_child, bus_generic_print_child),
84 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
85 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
86 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
87 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
88 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
89 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
90 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
91 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
92
93 /* pcib interface */
94 DEVMETHOD(pcib_maxslots, pcib_maxslots),
95 DEVMETHOD(pcib_read_config, pcib_read_config),
96 DEVMETHOD(pcib_write_config, pcib_write_config),
97 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt),
98 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
99 DEVMETHOD(pcib_release_msi, pcib_release_msi),
100 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
101 DEVMETHOD(pcib_release_msix, pcib_release_msix),
102 DEVMETHOD(pcib_map_msi, pcib_map_msi),
103
104 {0, 0}
105 };
106
107 static devclass_t pcib_devclass;
108
109 DEFINE_CLASS_0(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
110 sizeof(struct acpi_pcib_softc));
111 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
112 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
113
114 static int
115 acpi_pcib_pci_probe(device_t dev)
116 {
117
118 if (pci_get_class(dev) != PCIC_BRIDGE ||
119 pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
120 acpi_disabled("pci"))
121 return (ENXIO);
122 if (acpi_get_handle(dev) == NULL)
123 return (ENXIO);
124 if (pci_cfgregopen() == 0)
125 return (ENXIO);
126
127 device_set_desc(dev, "ACPI PCI-PCI bridge");
128 return (-1000);
129 }
130
131 static int
132 acpi_pcib_pci_attach(device_t dev)
133 {
134 struct acpi_pcib_softc *sc;
135
136 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
137
138 pcib_attach_common(dev);
139 sc = device_get_softc(dev);
140 sc->ap_handle = acpi_get_handle(dev);
141 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
142 }
143
144 static int
145 acpi_pcib_pci_resume(device_t dev)
146 {
147
148 return (acpi_pcib_resume(dev));
149 }
150
151 static int
152 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
153 {
154 struct acpi_pcib_softc *sc = device_get_softc(dev);
155
156 switch (which) {
157 case ACPI_IVAR_HANDLE:
158 *result = (uintptr_t)sc->ap_handle;
159 return (0);
160 }
161 return (pcib_read_ivar(dev, child, which, result));
162 }
163
164 static int
165 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
166 {
167 struct acpi_pcib_softc *sc;
168
169 sc = device_get_softc(pcib);
170
171 /*
172 * If we don't have a _PRT, fall back to the swizzle method
173 * for routing interrupts.
174 */
175 if (sc->ap_prt.Pointer == NULL)
176 return (pcib_route_interrupt(pcib, dev, pin));
177 else
178 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
179 }
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