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);
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 /* Host to PCI bridge driver. */
90 mptable_hostb_probe(device_t dev)
95 if (pci_cfgregopen() == 0)
98 if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0)
101 device_set_desc(dev, "MPTable Host-PCI bridge");
106 mptable_hostb_attach(device_t dev)
109 device_add_child(dev, "pci", pcib_get_bus(dev));
110 return (bus_generic_attach(dev));
113 /* Pass MSI requests up to the nexus. */
115 mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
120 bus = device_get_parent(pcib);
121 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
126 mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq)
130 bus = device_get_parent(pcib);
131 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
135 mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
140 bus = device_get_parent(pcib);
141 return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data));
144 static device_method_t mptable_hostb_methods[] = {
145 /* Device interface */
146 DEVMETHOD(device_probe, mptable_hostb_probe),
147 DEVMETHOD(device_attach, mptable_hostb_attach),
148 DEVMETHOD(device_shutdown, bus_generic_shutdown),
149 DEVMETHOD(device_suspend, bus_generic_suspend),
150 DEVMETHOD(device_resume, bus_generic_resume),
153 DEVMETHOD(bus_print_child, bus_generic_print_child),
154 DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
155 DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
156 DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
157 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
158 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
159 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
160 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
161 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
164 DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
165 DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
166 DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
167 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
168 DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi),
169 DEVMETHOD(pcib_release_msi, pcib_release_msi),
170 DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix),
171 DEVMETHOD(pcib_release_msix, pcib_release_msix),
172 DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi),
177 static devclass_t hostb_devclass;
179 DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods, 1);
180 DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, 0, 0);
182 /* PCI to PCI bridge driver. */
185 mptable_pcib_probe(device_t dev)
192 if ((pci_get_class(dev) != PCIC_BRIDGE) ||
193 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
195 bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
199 if (mptable_pci_probe_table(bus) != 0)
202 device_set_desc(dev, "MPTable PCI-PCI bridge");
206 static device_method_t mptable_pcib_pci_methods[] = {
207 /* Device interface */
208 DEVMETHOD(device_probe, mptable_pcib_probe),
209 DEVMETHOD(device_attach, pcib_attach),
210 DEVMETHOD(device_shutdown, bus_generic_shutdown),
211 DEVMETHOD(device_suspend, bus_generic_suspend),
212 DEVMETHOD(device_resume, bus_generic_resume),
215 DEVMETHOD(bus_print_child, bus_generic_print_child),
216 DEVMETHOD(bus_read_ivar, pcib_read_ivar),
217 DEVMETHOD(bus_write_ivar, pcib_write_ivar),
218 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
219 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
220 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
221 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
222 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
223 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
226 DEVMETHOD(pcib_maxslots, pcib_maxslots),
227 DEVMETHOD(pcib_read_config, pcib_read_config),
228 DEVMETHOD(pcib_write_config, pcib_write_config),
229 DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
230 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
231 DEVMETHOD(pcib_release_msi, pcib_release_msi),
232 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
233 DEVMETHOD(pcib_release_msix, pcib_release_msix),
234 DEVMETHOD(pcib_map_msi, pcib_map_msi),
239 static devclass_t pcib_devclass;
241 DEFINE_CLASS_0(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
242 sizeof(struct pcib_softc));
243 DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, 0, 0);