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.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
32 * interrupts from PCI devices to I/O APICs.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/module.h>
45 #include <dev/pci/pcireg.h>
46 #include <dev/pci/pcivar.h>
47 #include <dev/pci/pcib_private.h>
48 #include <x86/mptable.h>
49 #include <machine/legacyvar.h>
50 #include <machine/pci_cfgreg.h>
54 /* Host to PCI bridge driver. */
57 mptable_hostb_probe(device_t dev)
60 if (pci_cfgregopen() == 0)
62 if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
64 device_set_desc(dev, "MPTable Host-PCI bridge");
69 mptable_hostb_attach(device_t dev)
73 mptable_pci_host_res_init(dev);
75 device_add_child(dev, "pci", pcib_get_bus(dev));
76 return (bus_generic_attach(dev));
79 /* Pass MSI requests up to the nexus. */
81 mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
86 bus = device_get_parent(pcib);
87 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
92 mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
96 bus = device_get_parent(pcib);
97 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
101 mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
106 bus = device_get_parent(pcib);
107 return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
112 mptable_is_isa_range(u_long start, u_long end)
117 if ((start & 0xfc00) != (end & 0xfc00))
121 return (start >= 0x100 && end <= 0x3ff);
125 mptable_is_vga_range(u_long start, u_long end)
129 if ((start & 0xfc00) != (end & 0xfc00))
133 return (pci_is_vga_ioport_range(start, end));
136 static struct resource *
137 mptable_hostb_alloc_resource(device_t dev, device_t child, int type, int *rid,
138 u_long start, u_long end, u_long count, u_int flags)
140 struct mptable_hostb_softc *sc;
142 sc = device_get_softc(dev);
143 if (type == SYS_RES_IOPORT && start + count - 1 == end) {
144 if (mptable_is_isa_range(start, end)) {
145 switch (sc->sc_decodes_isa_io) {
149 return (bus_generic_alloc_resource(dev, child,
150 type, rid, start, end, count, flags));
155 if (mptable_is_vga_range(start, end)) {
156 switch (sc->sc_decodes_vga_io) {
160 return (bus_generic_alloc_resource(dev, child,
161 type, rid, start, end, count, flags));
167 start = hostb_alloc_start(type, start, end, count);
168 return (pcib_host_res_alloc(&sc->sc_host_res, child, type, rid, start,
173 mptable_hostb_adjust_resource(device_t dev, device_t child, int type,
174 struct resource *r, u_long start, u_long end)
176 struct mptable_hostb_softc *sc;
178 sc = device_get_softc(dev);
179 return (pcib_host_res_adjust(&sc->sc_host_res, child, type, r, start,
184 static device_method_t mptable_hostb_methods[] = {
185 /* Device interface */
186 DEVMETHOD(device_probe, mptable_hostb_probe),
187 DEVMETHOD(device_attach, mptable_hostb_attach),
188 DEVMETHOD(device_shutdown, bus_generic_shutdown),
189 DEVMETHOD(device_suspend, bus_generic_suspend),
190 DEVMETHOD(device_resume, bus_generic_resume),
193 DEVMETHOD(bus_print_child, bus_generic_print_child),
194 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
195 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
197 DEVMETHOD(bus_alloc_resource, mptable_hostb_alloc_resource),
198 DEVMETHOD(bus_adjust_resource, mptable_hostb_adjust_resource),
200 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
201 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
203 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
204 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
205 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
206 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
207 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
210 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
211 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
212 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
213 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
214 DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
215 DEVMETHOD(pcib_release_msi, pcib_release_msi),
216 DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
217 DEVMETHOD(pcib_release_msix, pcib_release_msix),
218 DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi),
223 static devclass_t hostb_devclass;
225 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods,
226 sizeof(struct mptable_hostb_softc));
227 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
229 /* PCI to PCI bridge driver. */
232 mptable_pcib_probe(device_t dev)
236 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
237 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
239 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
242 if (mptable_pci_probe_table(bus) != 0)
244 device_set_desc(dev, "MPTable PCI-PCI bridge");
248 static device_method_t mptable_pcib_pci_methods[] = {
249 /* Device interface */
250 DEVMETHOD(device_probe, mptable_pcib_probe),
253 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
258 static devclass_t pcib_devclass;
260 DEFINE_CLASS_1(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
261 sizeof(struct pcib_softc), pcib_driver);
262 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);