2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * $FreeBSD: src/sys/dev/acpica/acpi_pcib_pci.c,v 1.17.8.1 2009/04/15 03:14:26 kensmith Exp $
32 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
39 #include <dev/acpica5/acpivar.h>
40 #include <dev/acpica5/acpi_pcibvar.h>
42 #include <bus/pci/i386/pci_cfgreg.h>
43 #include <bus/pci/pcivar.h>
44 #include <bus/pci/pcireg.h>
45 #include <bus/pci/pcib_private.h>
48 /* Hooks for the ACPI CA debugging infrastructure. */
49 #define _COMPONENT ACPI_BUS
50 ACPI_MODULE_NAME("PCI_PCI")
52 struct acpi_pcib_softc {
53 struct pcib_softc ap_pcibsc;
54 ACPI_HANDLE ap_handle;
55 ACPI_BUFFER ap_prt; /* interrupt routing table */
58 struct acpi_pcib_lookup_info {
63 static int acpi_pcib_pci_probe(device_t bus);
64 static int acpi_pcib_pci_attach(device_t bus);
65 static int acpi_pcib_pci_resume(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);
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 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 DEVMETHOD(device_suspend, bus_generic_suspend),
77 DEVMETHOD(device_resume, acpi_pcib_pci_resume),
80 DEVMETHOD(bus_print_child, bus_generic_print_child),
81 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
82 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
83 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
84 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
85 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
86 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
87 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
88 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
91 DEVMETHOD(pcib_maxslots, pcib_maxslots),
92 DEVMETHOD(pcib_read_config, pcib_read_config),
93 DEVMETHOD(pcib_write_config, pcib_write_config),
94 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt),
96 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
97 DEVMETHOD(pcib_release_msi, pcib_release_msi),
98 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
99 DEVMETHOD(pcib_release_msix, pcib_release_msix),
100 DEVMETHOD(pcib_map_msi, pcib_map_msi),
105 static devclass_t pcib_devclass;
106 DEFINE_CLASS_0(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
107 sizeof(struct acpi_pcib_softc));
108 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
109 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
112 acpi_pcib_pci_probe(device_t dev)
114 if (pci_get_class(dev) != PCIC_BRIDGE ||
115 pci_get_subclass(dev) != PCIS_BRIDGE_PCI ||
116 !acpi_enabled("pci"))
118 if (acpi_get_handle(dev) == NULL)
120 if (pci_cfgregopen() == 0)
123 device_set_desc(dev, "ACPI PCI-PCI bridge");
128 acpi_pcib_pci_attach(device_t dev)
130 struct acpi_pcib_softc *sc;
132 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
134 pcib_attach_common(dev);
135 sc = device_get_softc(dev);
136 sc->ap_handle = acpi_get_handle(dev);
137 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
141 acpi_pcib_pci_resume(device_t dev)
143 return (acpi_pcib_resume(dev));
147 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
149 struct acpi_pcib_softc *sc = device_get_softc(dev);
152 case ACPI_IVAR_HANDLE:
153 *result = (uintptr_t)sc->ap_handle;
156 return (pcib_read_ivar(dev, child, which, result));
160 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
162 struct acpi_pcib_softc *sc = device_get_softc(pcib);
165 * If we don't have a _PRT, fall back to the swizzle method
166 * for routing interrupts.
168 if (sc->ap_prt.Pointer == NULL) {
169 device_printf(pcib, "No _PRT found, routing with pci\n");
170 return (pcib_route_interrupt(pcib, dev, pin));
172 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));