/*- * Copyright (c) 2003 John Baldwin * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD @169221 */ /* * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route * interrupts from PCI devices to I/O APICs. */ #include #include #include #include #include #include #include #include #include #include #include "legacyvar.h" #include "pci_cfgreg.h" #include "pcib_if.h" static int mptable_pci_route_interrupt(device_t pcib, device_t dev, int pin) { int line, bus, slot, irq; bus = pci_get_bus(dev); slot = pci_get_slot(dev); irq = pci_get_irq(dev); line = mptable_pci_int_route(bus, slot, pin, -1); if (line >= 0) goto done; /* * MPTABLE does not provide interrupt routing * for bus:slot:pin, ask parent about it then, * i.e. PCI-PCI bridge interrupt pin swizzle. */ line = pcib_route_interrupt(pcib, dev, pin); if (line != PCI_INVALID_IRQ) return line; /* * No luck, try using the intline ... * XXX this probably is broken */ line = mptable_pci_int_route(bus, slot, pin, irq); if (line >= 0) goto done; kprintf("MPTABLE: Unable to route for bus %d slot %d INT%c\n", bus, slot, 'A' + pin - 1); return PCI_INVALID_IRQ; done: BUS_CONFIG_INTR(dev, dev, line, INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW); return line; } /* Host to PCI bridge driver. */ static int mptable_hostb_probe(device_t dev) { if (!ioapic_enable) return (ENXIO); if (pci_cfgregopen() == 0) return (ENXIO); #ifdef notyet if (mptable_pci_probe_table(pcib_get_bus(dev)) != 0) return (ENXIO); #endif device_set_desc(dev, "MPTABLE Host-PCI bridge"); return (0); } static int mptable_hostb_attach(device_t dev) { device_add_child(dev, "pci", pcib_get_bus(dev)); return (bus_generic_attach(dev)); } /* Pass MSI requests up to the nexus. */ static int mptable_hostb_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs, int cpuid) { device_t bus; bus = device_get_parent(pcib); return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, irqs, cpuid)); } static int mptable_hostb_alloc_msix(device_t pcib, device_t dev, int *irq, int cpuid) { device_t bus; bus = device_get_parent(pcib); return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq, cpuid)); } static int mptable_hostb_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data, int cpuid) { device_t bus; bus = device_get_parent(pcib); return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data, cpuid)); } static device_method_t mptable_hostb_methods[] = { /* Device interface */ DEVMETHOD(device_probe, mptable_hostb_probe), DEVMETHOD(device_attach, mptable_hostb_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar), DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar), DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource), DEVMETHOD(bus_release_resource, bus_generic_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), /* pcib interface */ DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots), DEVMETHOD(pcib_read_config, legacy_pcib_read_config), DEVMETHOD(pcib_write_config, legacy_pcib_write_config), DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt), DEVMETHOD(pcib_alloc_msi, mptable_hostb_alloc_msi), DEVMETHOD(pcib_release_msi, pcib_release_msi), DEVMETHOD(pcib_alloc_msix, mptable_hostb_alloc_msix), DEVMETHOD(pcib_release_msix, pcib_release_msix), DEVMETHOD(pcib_map_msi, mptable_hostb_map_msi), DEVMETHOD_END }; static devclass_t hostb_devclass; DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods, 1); DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, hostb_devclass, NULL, NULL); /* PCI to PCI bridge driver. */ static int mptable_pcib_probe(device_t dev) { int bus; if (!ioapic_enable) return (ENXIO); if ((pci_get_class(dev) != PCIC_BRIDGE) || (pci_get_subclass(dev) != PCIS_BRIDGE_PCI)) return (ENXIO); bus = pci_read_config(dev, PCIR_SECBUS_1, 1); if (bus == 0) return (ENXIO); #ifdef notyet if (mptable_pci_probe_table(bus) != 0) return (ENXIO); #endif device_set_desc(dev, "MPTABLE PCI-PCI bridge"); return (-500); } static device_method_t mptable_pcib_pci_methods[] = { /* Device interface */ DEVMETHOD(device_probe, mptable_pcib_probe), DEVMETHOD(device_attach, pcib_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, pcib_read_ivar), DEVMETHOD(bus_write_ivar, pcib_write_ivar), DEVMETHOD(bus_alloc_resource, pcib_alloc_resource), DEVMETHOD(bus_release_resource, bus_generic_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), /* pcib interface */ DEVMETHOD(pcib_maxslots, pcib_maxslots), DEVMETHOD(pcib_read_config, pcib_read_config), DEVMETHOD(pcib_write_config, pcib_write_config), DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt), DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi), DEVMETHOD(pcib_release_msi, pcib_release_msi), DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix), DEVMETHOD(pcib_release_msix, pcib_release_msix), DEVMETHOD(pcib_map_msi, pcib_map_msi), DEVMETHOD_END }; static devclass_t pcib_devclass; DEFINE_CLASS_0(pcib, mptable_pcib_driver, mptable_pcib_pci_methods, sizeof(struct pcib_softc)); DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, pcib_devclass, NULL, NULL);