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:

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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: head/sys/dev/acpica/acpi_pcib_pci.c 129093 2004-05-10 18:26:22Z jhb $");
30
31#include "opt_acpi.h"
32
33#include <sys/param.h>
34#include <sys/bus.h>
35#include <sys/malloc.h>
36#include <sys/kernel.h>
37
38#include "acpi.h"
39
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
48#include "pcib_if.h"
49
50/*
51 * Hooks for the ACPI CA debugging infrastructure
52 */
53#define _COMPONENT ACPI_BUS
54ACPI_MODULE_NAME("PCI_PCI")
55
56struct acpi_pcib_softc {
57 struct pcib_softc ap_pcibsc;
58 ACPI_HANDLE ap_handle;
59 ACPI_BUFFER ap_prt; /* interrupt routing table */
60};
61
62struct acpi_pcib_lookup_info {
63 UINT32 address;
64 ACPI_HANDLE handle;
65};
66
67static int acpi_pcib_pci_probe(device_t bus);
68static int acpi_pcib_pci_attach(device_t bus);
69static int acpi_pcib_pci_resume(device_t bus);
70static int acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result);
71static int acpi_pcib_pci_route_interrupt(device_t pcib,
72 device_t dev, int pin);
73
74static 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),

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107
108DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
109MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
110
111static int
112acpi_pcib_pci_probe(device_t dev)
113{
114
115 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
116 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI) ||
117 acpi_disabled("pci"))
118 return (ENXIO);
119 if (acpi_get_handle(dev) == NULL)
120 return (ENXIO);
121 if (!pci_cfgregopen())
122 return (ENXIO);
123
124 device_set_desc(dev, "ACPI PCI-PCI bridge");
125 return (-1000);
126}
127
128static int
129acpi_pcib_pci_attach(device_t dev)

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144 struct acpi_pcib_softc *sc = device_get_softc(dev);
145
146 return (acpi_pcib_resume(dev, &sc->ap_prt, sc->ap_pcibsc.secbus));
147}
148
149static int
150acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
151{
152 struct acpi_pcib_softc *sc = device_get_softc(dev);
153
154 switch (which) {
155 case ACPI_IVAR_HANDLE:
156 *result = (uintptr_t)sc->ap_handle;
157 return(0);
158 }
159 return(pcib_read_ivar(dev, child, which, result));
160}
161
162static int
163acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
164{
165 struct acpi_pcib_softc *sc;
166
167 sc = device_get_softc(pcib);
168
169 /*
170 * If we don't have a _PRT, fall back to the swizzle method
171 * for routing interrupts.
172 */
173 if (sc->ap_prt.Pointer == NULL)
174 return (pcib_route_interrupt(pcib, dev, pin));
175 else
176 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
177}