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 <machine/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));
76 /* Pass MSI requests up to the nexus. */
78 mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
83 bus = device_get_parent(pcib);
84 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
89 mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
93 bus = device_get_parent(pcib);
94 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
99 mptable_is_isa_range(u_long start, u_long end)
104 if ((start & 0xfc00) != (end & 0xfc00))
108 return (start >= 0x100 && end <= 0x3ff);
112 mptable_is_vga_range(u_long start, u_long end)
116 if ((start & 0xfc00) != (end & 0xfc00))
120 return (pci_is_vga_ioport_range(start, end));
123 static struct resource *
124 mptable_hostb_alloc_resource(device_t dev, device_t child, int type, int *rid,
125 u_long start, u_long end, u_long count, u_int flags)
127 struct mptable_hostb_softc *sc;
129 sc = device_get_softc(dev);
130 if (type == SYS_RES_IOPORT && start + count - 1 == end) {
131 if (mptable_is_isa_range(start, end)) {
132 switch (sc->sc_decodes_isa_io) {
136 return (bus_generic_alloc_resource(dev, child,
137 type, rid, start, end, count, flags));
142 if (mptable_is_vga_range(start, end)) {
143 switch (sc->sc_decodes_vga_io) {
147 return (bus_generic_alloc_resource(dev, child,
148 type, rid, start, end, count, flags));
154 start = hostb_alloc_start(type, start, end, count);
155 return (pcib_host_res_alloc(&sc->sc_host_res, child, type, rid, start,
160 mptable_hostb_adjust_resource(device_t dev, device_t child, int type,
161 struct resource *r, u_long start, u_long end)
163 struct mptable_hostb_softc *sc;
165 sc = device_get_softc(dev);
166 return (pcib_host_res_adjust(&sc->sc_host_res, child, type, r, start,
171 static device_method_t mptable_hostb_methods[] = {
172 /* Device interface */
173 DEVMETHOD(device_probe, mptable_hostb_probe),
174 DEVMETHOD(device_attach, mptable_hostb_attach),
175 DEVMETHOD(device_shutdown, bus_generic_shutdown),
176 DEVMETHOD(device_suspend, bus_generic_suspend),
177 DEVMETHOD(device_resume, bus_generic_resume),
180 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
181 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
183 DEVMETHOD(bus_alloc_resource, mptable_hostb_alloc_resource),
184 DEVMETHOD(bus_adjust_resource, mptable_hostb_adjust_resource),
186 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
187 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
189 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
190 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
191 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
192 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
193 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
196 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
197 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
198 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
199 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
200 DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
201 DEVMETHOD(pcib_release_msi, pcib_release_msi),
202 DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
203 DEVMETHOD(pcib_release_msix, pcib_release_msix),
204 DEVMETHOD(pcib_map_msi, legacy_pcib_map_msi),
209 static devclass_t hostb_devclass;
211 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods,
212 sizeof(struct mptable_hostb_softc));
213 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
215 /* PCI to PCI bridge driver. */
218 mptable_pcib_probe(device_t dev)
222 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
223 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
225 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
228 if (mptable_pci_probe_table(bus) != 0)
230 device_set_desc(dev, "MPTable PCI-PCI bridge");
234 static device_method_t mptable_pcib_pci_methods[] = {
235 /* Device interface */
236 DEVMETHOD(device_probe, mptable_pcib_probe),
239 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
244 static devclass_t pcib_devclass;
246 DEFINE_CLASS_1(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
247 sizeof(struct pcib_softc), pcib_driver);
248 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);