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- /*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2000 Michael Smith
- * Copyright (c) 2000 BSDi
- * 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.
- *
- * 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.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/module.h>
- #include <sys/bus.h>
- #include <sys/malloc.h>
- #include <sys/kernel.h>
- #include <dev/ofw/openfirm.h>
- #include <dev/ofw/ofw_pci.h>
- #include <dev/ofw/ofw_bus.h>
- #include <dev/ofw/ofw_bus_subr.h>
- #include <dev/pci/pcivar.h>
- #include <dev/pci/pcireg.h>
- #include <dev/pci/pcib_private.h>
- #include <machine/intr_machdep.h>
- #include "pcib_if.h"
- static int ofw_pcib_pci_probe(device_t bus);
- static int ofw_pcib_pci_attach(device_t bus);
- static phandle_t ofw_pcib_pci_get_node(device_t bus, device_t dev);
- static int ofw_pcib_pci_route_interrupt(device_t bridge, device_t dev,
- int intpin);
- static device_method_t ofw_pcib_pci_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, ofw_pcib_pci_probe),
- DEVMETHOD(device_attach, ofw_pcib_pci_attach),
- /* pcib interface */
- DEVMETHOD(pcib_route_interrupt, ofw_pcib_pci_route_interrupt),
- DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
- /* ofw_bus interface */
- DEVMETHOD(ofw_bus_get_node, ofw_pcib_pci_get_node),
- DEVMETHOD_END
- };
- static devclass_t pcib_devclass;
- struct ofw_pcib_softc {
- /*
- * This is here so that we can use pci bridge methods, too - the
- * generic routines only need the dev, secbus and subbus members
- * filled.
- */
- struct pcib_softc ops_pcib_sc;
- phandle_t ops_node;
- struct ofw_bus_iinfo ops_iinfo;
- };
- DEFINE_CLASS_1(pcib, ofw_pcib_pci_driver, ofw_pcib_pci_methods,
- sizeof(struct ofw_pcib_softc), pcib_driver);
- EARLY_DRIVER_MODULE(ofw_pcib, pci, ofw_pcib_pci_driver, pcib_devclass, 0, 0,
- BUS_PASS_BUS);
- static int
- ofw_pcib_pci_probe(device_t dev)
- {
- if ((pci_get_class(dev) != PCIC_BRIDGE) ||
- (pci_get_subclass(dev) != PCIS_BRIDGE_PCI)) {
- return (ENXIO);
- }
- if (ofw_bus_get_node(dev) == -1)
- return (ENXIO);
- device_set_desc(dev, "OFW PCI-PCI bridge");
- return (0);
- }
- static int
- ofw_pcib_pci_attach(device_t dev)
- {
- struct ofw_pcib_softc *sc;
- sc = device_get_softc(dev);
- sc->ops_pcib_sc.dev = dev;
- sc->ops_node = ofw_bus_get_node(dev);
- ofw_bus_setup_iinfo(sc->ops_node, &sc->ops_iinfo,
- sizeof(cell_t));
- pcib_attach_common(dev);
- return (pcib_attach_child(dev));
- }
- static phandle_t
- ofw_pcib_pci_get_node(device_t bridge, device_t dev)
- {
- /* We have only one child, the PCI bus, so pass it our node */
- return (ofw_bus_get_node(bridge));
- }
- static int
- ofw_pcib_pci_route_interrupt(device_t bridge, device_t dev, int intpin)
- {
- struct ofw_pcib_softc *sc;
- struct ofw_bus_iinfo *ii;
- struct ofw_pci_register reg;
- cell_t pintr, mintr[2];
- int intrcells;
- phandle_t iparent;
- sc = device_get_softc(bridge);
- ii = &sc->ops_iinfo;
- if (ii->opi_imapsz > 0) {
- pintr = intpin;
- /* Fabricate imap information if this isn't an OFW device */
- bzero(®, sizeof(reg));
- reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
- (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
- (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
- intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev), ii, ®,
- sizeof(reg), &pintr, sizeof(pintr), mintr, sizeof(mintr),
- &iparent);
- if (intrcells) {
- /*
- * If we've found a mapping, return it and don't map
- * it again on higher levels - that causes problems
- * in some cases, and never seems to be required.
- */
- mintr[0] = ofw_bus_map_intr(dev, iparent, intrcells,
- mintr);
- return (mintr[0]);
- }
- } else if (intpin >= 1 && intpin <= 4) {
- /*
- * When an interrupt map is missing, we need to do the
- * standard PCI swizzle and continue mapping at the parent.
- */
- return (pcib_route_interrupt(bridge, dev, intpin));
- }
- return (PCIB_ROUTE_INTERRUPT(device_get_parent(device_get_parent(
- bridge)), bridge, intpin));
- }
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