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
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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);
62 line = pci_apic_irq(bus, slot, pin);
66 int irq = pci_get_irq(dev);
69 * PCI interrupts might be redirected to the
70 * ISA bus according to some MP tables. Use the
71 * same methods as used by the ISA devices
72 * devices to find the proper IOAPIC int pin.
74 kprintf("MPTable: Try routing through ISA bus for "
75 "bus %d slot %d INT%c irq %d\n",
76 bus, slot, 'A' + pin - 1, irq);
77 line = isa_apic_irq(irq);
82 kprintf("MPTable: Unable to route for bus %d slot %d INT%c\n",
83 bus, slot, 'A' + pin - 1);
84 return PCI_INVALID_IRQ;
87 BUS_CONFIG_INTR(dev, dev, line, INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
91 /* Host to PCI bridge driver. */
94 mptable_hostb_probe(device_t dev)
99 if (pci_cfgregopen() == 0)
102 if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
105 device_set_desc(dev, "MPTable Host-PCI bridge");
110 mptable_hostb_attach(device_t dev)
113 device_add_child(dev, "pci", pcib_get_bus(dev));
114 return (bus_generic_attach(dev));
117 /* Pass MSI requests up to the nexus. */
119 mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
124 bus = device_get_parent(pcib);
125 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
130 mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
134 bus = device_get_parent(pcib);
135 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
139 mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
144 bus = device_get_parent(pcib);
145 return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
148 static device_method_t mptable_hostb_methods[] = {
149 /* Device interface */
150 DEVMETHOD(device_probe, mptable_hostb_probe),
151 DEVMETHOD(device_attach, mptable_hostb_attach),
152 DEVMETHOD(device_shutdown, bus_generic_shutdown),
153 DEVMETHOD(device_suspend, bus_generic_suspend),
154 DEVMETHOD(device_resume, bus_generic_resume),
157 DEVMETHOD(bus_print_child, bus_generic_print_child),
158 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
159 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
160 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
161 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
162 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
163 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
164 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
165 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
168 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
169 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
170 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
171 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
172 DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
173 DEVMETHOD(pcib_release_msi, pcib_release_msi),
174 DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
175 DEVMETHOD(pcib_release_msix, pcib_release_msix),
176 DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi),
181 static devclass_t hostb_devclass;
183 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods, 1);
184 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
186 /* PCI to PCI bridge driver. */
189 mptable_pcib_probe(device_t dev)
196 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
197 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
199 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
203 if (mptable_pci_probe_table(bus) != 0)
206 device_set_desc(dev, "MPTable PCI-PCI bridge");
210 static device_method_t mptable_pcib_pci_methods[] = {
211 /* Device interface */
212 DEVMETHOD(device_probe, mptable_pcib_probe),
213 DEVMETHOD(device_attach, pcib_attach),
214 DEVMETHOD(device_shutdown, bus_generic_shutdown),
215 DEVMETHOD(device_suspend, bus_generic_suspend),
216 DEVMETHOD(device_resume, bus_generic_resume),
219 DEVMETHOD(bus_print_child, bus_generic_print_child),
220 DEVMETHOD(bus_read_ivar, pcib_read_ivar),
221 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
222 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
223 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
224 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
225 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
226 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
227 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
230 DEVMETHOD(pcib_maxslots, pcib_maxslots),
231 DEVMETHOD(pcib_read_config, pcib_read_config),
232 DEVMETHOD(pcib_write_config, pcib_write_config),
233 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
234 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
235 DEVMETHOD(pcib_release_msi, pcib_release_msi),
236 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
237 DEVMETHOD(pcib_release_msix, pcib_release_msix),
238 DEVMETHOD(pcib_map_msi, pcib_map_msi),
243 static devclass_t pcib_devclass;
245 DEFINE_CLASS_0(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
246 sizeof(struct pcib_softc));
247 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);