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
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/module.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
37 #include <dev/ofw/openfirm.h>
38 #include <dev/ofw/ofw_pci.h>
39 #include <dev/ofw/ofw_bus.h>
40 #include <dev/ofw/ofw_bus_subr.h>
42 #include <dev/pci/pcivar.h>
43 #include <dev/pci/pcireg.h>
44 #include <dev/pci/pcib_private.h>
48 static int ofw_pcib_pci_probe(device_t bus);
49 static int ofw_pcib_pci_attach(device_t bus);
50 static phandle_t ofw_pcib_pci_get_node(device_t bus, device_t dev);
51 static int ofw_pcib_pci_route_interrupt(device_t bridge, device_t dev,
54 static device_method_t ofw_pcib_pci_methods[] = {
55 /* Device interface */
56 DEVMETHOD(device_probe, ofw_pcib_pci_probe),
57 DEVMETHOD(device_attach, ofw_pcib_pci_attach),
58 DEVMETHOD(device_shutdown, bus_generic_shutdown),
59 DEVMETHOD(device_suspend, bus_generic_suspend),
60 DEVMETHOD(device_resume, bus_generic_resume),
63 DEVMETHOD(bus_read_ivar, pcib_read_ivar),
64 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
65 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
66 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
67 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
68 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
69 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
70 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
73 DEVMETHOD(pcib_maxslots, pcib_maxslots),
74 DEVMETHOD(pcib_read_config, pcib_read_config),
75 DEVMETHOD(pcib_write_config, pcib_write_config),
76 DEVMETHOD(pcib_route_interrupt, ofw_pcib_pci_route_interrupt),
78 /* ofw_bus interface */
79 DEVMETHOD(ofw_bus_get_node, ofw_pcib_pci_get_node),
84 static devclass_t pcib_devclass;
86 struct ofw_pcib_softc {
88 * This is here so that we can use pci bridge methods, too - the
89 * generic routines only need the dev, secbus and subbus members
92 struct pcib_softc ops_pcib_sc;
94 struct ofw_bus_iinfo ops_iinfo;
97 DEFINE_CLASS_0(pcib, ofw_pcib_pci_driver, ofw_pcib_pci_methods,
98 sizeof(struct ofw_pcib_softc));
99 DRIVER_MODULE(ofw_pcib, pci, ofw_pcib_pci_driver, pcib_devclass, 0, 0);
102 ofw_pcib_pci_probe(device_t dev)
105 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
106 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI)) {
110 if (ofw_bus_get_node(dev) == 0)
113 device_set_desc(dev, "OFW PCI-PCI bridge");
118 ofw_pcib_pci_attach(device_t dev)
120 struct ofw_pcib_softc *sc;
122 sc = device_get_softc(dev);
123 sc->ops_pcib_sc.dev = dev;
124 sc->ops_node = ofw_bus_get_node(dev);
126 ofw_bus_setup_iinfo(sc->ops_node, &sc->ops_iinfo,
129 pcib_attach_common(dev);
131 device_add_child(dev, "pci", -1);
133 return (bus_generic_attach(dev));
137 ofw_pcib_pci_get_node(device_t bridge, device_t dev)
139 /* We have only one child, the PCI bus, so pass it our node */
141 return (ofw_bus_get_node(bridge));
145 ofw_pcib_pci_route_interrupt(device_t bridge, device_t dev, int intpin)
147 struct ofw_pcib_softc *sc;
148 struct ofw_bus_iinfo *ii;
149 struct ofw_pci_register reg;
151 uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
153 sc = device_get_softc(bridge);
155 if (ii->opi_imapsz > 0) {
157 if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), ii, ®,
158 sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
161 * If we've found a mapping, return it and don't map
162 * it again on higher levels - that causes problems
163 * in some cases, and never seems to be required.
167 } else if (intpin >= 1 && intpin <= 4) {
169 * When an interrupt map is missing, we need to do the
170 * standard PCI swizzle and continue mapping at the parent.
172 return (pcib_route_interrupt(bridge, dev, intpin));
174 return (PCIB_ROUTE_INTERRUPT(device_get_parent(device_get_parent(
175 bridge)), bridge, intpin));