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("$FreeBSD$");
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/acpi.h>
40 #include <dev/acpica/acpivar.h>
41 #include <dev/acpica/acpi_pcibvar.h>
42
43 #include <machine/pci_cfgreg.h>
44 #include <dev/pci/pcivar.h>
45 #include <dev/pci/pcireg.h>
46 #include <dev/pci/pcib_private.h>
47 #include "pcib_if.h"
48
49 /* Hooks for the ACPI CA debugging infrastructure. */
50 #define _COMPONENT ACPI_BUS
51 ACPI_MODULE_NAME("PCI_PCI")
52
53 struct acpi_pcib_softc {
54 struct pcib_softc ap_pcibsc;
55 ACPI_HANDLE ap_handle;
56 ACPI_BUFFER ap_prt; /* interrupt routing table */
57 };
58
59 struct acpi_pcib_lookup_info {
60 UINT32 address;
61 ACPI_HANDLE handle;
62 };
63
64 static int acpi_pcib_pci_probe(device_t bus);
65 static int acpi_pcib_pci_attach(device_t bus);
66 static int acpi_pcib_read_ivar(device_t dev, device_t child,
67 int which, uintptr_t *result);
68 static int acpi_pcib_pci_route_interrupt(device_t pcib,
69 device_t dev, int pin);
70
71 static device_method_t acpi_pcib_pci_methods[] = {
72 /* Device interface */
73 DEVMETHOD(device_probe, acpi_pcib_pci_probe),
74 DEVMETHOD(device_attach, acpi_pcib_pci_attach),
75
76 /* Bus interface */
77 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
78
79 /* pcib interface */
80 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt),
81
82 {0, 0}
83 };
84
85 static devclass_t pcib_devclass;
86
87 DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
88 sizeof(struct acpi_pcib_softc), pcib_driver);
89 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
90 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
91
92 static int
93 acpi_pcib_pci_probe(device_t dev)
94 {
95
96 if (pci_get_class(dev) != PCIC_BRIDGE ||
97 pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
98 acpi_disabled("pci"))
99 return (ENXIO);
100 if (acpi_get_handle(dev) == NULL)
101 return (ENXIO);
102 if (pci_cfgregopen() == 0)
103 return (ENXIO);
104
105 device_set_desc(dev, "ACPI PCI-PCI bridge");
106 return (-1000);
107 }
108
109 static int
110 acpi_pcib_pci_attach(device_t dev)
111 {
112 struct acpi_pcib_softc *sc;
113
114 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
115
116 pcib_attach_common(dev);
117 sc = device_get_softc(dev);
118 sc->ap_handle = acpi_get_handle(dev);
119 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
120 }
121
122 static int
123 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
124 {
125 struct acpi_pcib_softc *sc = device_get_softc(dev);
126
127 switch (which) {
128 case ACPI_IVAR_HANDLE:
129 *result = (uintptr_t)sc->ap_handle;
130 return (0);
131 }
132 return (pcib_read_ivar(dev, child, which, result));
133 }
134
135 static int
136 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
137 {
138 struct acpi_pcib_softc *sc;
139
140 sc = device_get_softc(pcib);
141
142 /*
143 * If we don't have a _PRT, fall back to the swizzle method
144 * for routing interrupts.
145 */
146 if (sc->ap_prt.Pointer == NULL)
147 return (pcib_route_interrupt(pcib, dev, pin));
148 else
149 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
150 }
Cache object: 8b208b02a8f87020b957d7319ae73321
|