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
33 * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
34 * interrupts from PCI devices to I/O APICs.
37 #include <sys/param.h>
38 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
43 #include <bus/pci/pcireg.h>
44 #include <bus/pci/pcivar.h>
45 #include <bus/pci/pcib_private.h>
47 #include <machine/smp.h>
49 #include "legacyvar.h"
50 #include "pci_cfgreg.h"
55 mptable_pci_route_interrupt(device_t pcib, device_t dev, int pin)
59 bus = pci_get_bus(dev);
60 slot = pci_get_slot(dev);
63 line = pci_apic_irq(bus, slot, pin);
67 int irq = pci_get_irq(dev);
70 * PCI interrupts might be redirected to the
71 * ISA bus according to some MP tables. Use the
72 * same methods as used by the ISA devices
73 * devices to find the proper IOAPIC int pin.
75 kprintf("MPTable: Try routing through ISA bus for "
76 "bus %d slot %d INT%c irq %d\n",
77 bus, slot, 'A' + pin - 1, irq);
78 line = isa_apic_irq(irq);
83 int irq = pci_get_irq(dev);
85 line = mptable_pci_int_route(bus, slot, pin, irq);
90 kprintf("MPTABLE: Unable to route for bus %d slot %d INT%c\n",
91 bus, slot, 'A' + pin - 1);
92 return PCI_INVALID_IRQ;
95 BUS_CONFIG_INTR(dev, dev, line, INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
99 /* Host to PCI bridge driver. */
102 mptable_hostb_probe(device_t dev)
107 if (pci_cfgregopen() == 0)
110 if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
113 if (!ioapic_use_old) {
115 mptable_pci_int_dump();
118 device_set_desc(dev, "MPTABLE Host-PCI bridge");
123 mptable_hostb_attach(device_t dev)
126 device_add_child(dev, "pci", pcib_get_bus(dev));
127 return (bus_generic_attach(dev));
130 /* Pass MSI requests up to the nexus. */
132 mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
137 bus = device_get_parent(pcib);
138 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
143 mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
147 bus = device_get_parent(pcib);
148 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
152 mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
157 bus = device_get_parent(pcib);
158 return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
161 static device_method_t mptable_hostb_methods[] = {
162 /* Device interface */
163 DEVMETHOD(device_probe, mptable_hostb_probe),
164 DEVMETHOD(device_attach, mptable_hostb_attach),
165 DEVMETHOD(device_shutdown, bus_generic_shutdown),
166 DEVMETHOD(device_suspend, bus_generic_suspend),
167 DEVMETHOD(device_resume, bus_generic_resume),
170 DEVMETHOD(bus_print_child, bus_generic_print_child),
171 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
172 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
173 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
174 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
175 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
176 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
177 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
178 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
181 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
182 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
183 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
184 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
185 DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
186 DEVMETHOD(pcib_release_msi, pcib_release_msi),
187 DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
188 DEVMETHOD(pcib_release_msix, pcib_release_msix),
189 DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi),
194 static devclass_t hostb_devclass;
196 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods, 1);
197 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
199 /* PCI to PCI bridge driver. */
202 mptable_pcib_probe(device_t dev)
209 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
210 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
212 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
216 if (mptable_pci_probe_table(bus) != 0)
219 device_set_desc(dev, "MPTABLE PCI-PCI bridge");
223 static device_method_t mptable_pcib_pci_methods[] = {
224 /* Device interface */
225 DEVMETHOD(device_probe, mptable_pcib_probe),
226 DEVMETHOD(device_attach, pcib_attach),
227 DEVMETHOD(device_shutdown, bus_generic_shutdown),
228 DEVMETHOD(device_suspend, bus_generic_suspend),
229 DEVMETHOD(device_resume, bus_generic_resume),
232 DEVMETHOD(bus_print_child, bus_generic_print_child),
233 DEVMETHOD(bus_read_ivar, pcib_read_ivar),
234 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
235 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
236 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
237 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
238 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
239 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
240 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
243 DEVMETHOD(pcib_maxslots, pcib_maxslots),
244 DEVMETHOD(pcib_read_config, pcib_read_config),
245 DEVMETHOD(pcib_write_config, pcib_write_config),
246 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
247 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
248 DEVMETHOD(pcib_release_msi, pcib_release_msi),
249 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
250 DEVMETHOD(pcib_release_msix, pcib_release_msix),
251 DEVMETHOD(pcib_map_msi, pcib_map_msi),
256 static devclass_t pcib_devclass;
258 DEFINE_CLASS_0(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
259 sizeof(struct pcib_softc));
260 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);