2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
29 * interrupts from PCI devices to I/O APICs.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
42 #include <dev/pci/pcireg.h>
43 #include <dev/pci/pcivar.h>
44 #include <dev/pci/pcib_private.h>
45 #include <x86/mptable.h>
46 #include <x86/legacyvar.h>
47 #include <machine/pci_cfgreg.h>
51 /* Host to PCI bridge driver. */
54 mptable_hostb_probe(device_t dev)
57 if (pci_cfgregopen() == 0)
59 if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
61 device_set_desc(dev, "MPTable Host-PCI bridge");
66 mptable_hostb_attach(device_t dev)
70 mptable_pci_host_res_init(dev);
72 device_add_child(dev, "pci", pcib_get_bus(dev));
73 return (bus_generic_attach(dev));
78 mptable_is_isa_range(u_long start, u_long end)
83 if ((start & 0xfc00) != (end & 0xfc00))
87 return (start >= 0x100 && end <= 0x3ff);
91 mptable_is_vga_range(u_long start, u_long end)
95 if ((start & 0xfc00) != (end & 0xfc00))
99 return (pci_is_vga_ioport_range(start, end));
102 static struct resource *
103 mptable_hostb_alloc_resource(device_t dev, device_t child, int type, int *rid,
104 u_long start, u_long end, u_long count, u_int flags)
106 struct mptable_hostb_softc *sc;
109 if (type == PCI_RES_BUS)
110 return (pci_domain_alloc_bus(0, child, rid, start, end, count,
113 sc = device_get_softc(dev);
114 if (type == SYS_RES_IOPORT && start + count - 1 == end) {
115 if (mptable_is_isa_range(start, end)) {
116 switch (sc->sc_decodes_isa_io) {
120 return (bus_generic_alloc_resource(dev, child,
121 type, rid, start, end, count, flags));
126 if (mptable_is_vga_range(start, end)) {
127 switch (sc->sc_decodes_vga_io) {
131 return (bus_generic_alloc_resource(dev, child,
132 type, rid, start, end, count, flags));
138 start = hostb_alloc_start(type, start, end, count);
139 return (pcib_host_res_alloc(&sc->sc_host_res, child, type, rid, start,
144 mptable_hostb_adjust_resource(device_t dev, device_t child, int type,
145 struct resource *r, u_long start, u_long end)
147 struct mptable_hostb_softc *sc;
150 if (type == PCI_RES_BUS)
151 return (pci_domain_adjust_bus(0, child, r, start, end));
153 sc = device_get_softc(dev);
154 return (pcib_host_res_adjust(&sc->sc_host_res, child, type, r, start,
159 static device_method_t mptable_hostb_methods[] = {
160 /* Device interface */
161 DEVMETHOD(device_probe, mptable_hostb_probe),
162 DEVMETHOD(device_attach, mptable_hostb_attach),
163 DEVMETHOD(device_shutdown, bus_generic_shutdown),
164 DEVMETHOD(device_suspend, bus_generic_suspend),
165 DEVMETHOD(device_resume, bus_generic_resume),
168 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
169 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
171 DEVMETHOD(bus_alloc_resource, mptable_hostb_alloc_resource),
172 DEVMETHOD(bus_adjust_resource, mptable_hostb_adjust_resource),
174 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
175 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
177 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
178 DEVMETHOD(bus_release_resource, legacy_pcib_release_resource),
180 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
182 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
183 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
184 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
185 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
188 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
189 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
190 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
191 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
192 DEVMETHOD(pcib_alloc_msi, legacy_pcib_alloc_msi),
193 DEVMETHOD(pcib_release_msi, pcib_release_msi),
194 DEVMETHOD(pcib_alloc_msix, legacy_pcib_alloc_msix),
195 DEVMETHOD(pcib_release_msix, pcib_release_msix),
196 DEVMETHOD(pcib_map_msi, legacy_pcib_map_msi),
201 static devclass_t hostb_devclass;
203 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods,
204 sizeof(struct mptable_hostb_softc));
205 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
207 /* PCI to PCI bridge driver. */
210 mptable_pcib_probe(device_t dev)
214 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
215 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
217 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
220 if (mptable_pci_probe_table(bus) != 0)
222 device_set_desc(dev, "MPTable PCI-PCI bridge");
226 static device_method_t mptable_pcib_pci_methods[] = {
227 /* Device interface */
228 DEVMETHOD(device_probe, mptable_pcib_probe),
231 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
236 static devclass_t pcib_devclass;
238 DEFINE_CLASS_1(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
239 sizeof(struct pcib_softc), pcib_driver);
240 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);