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have separate configuration spaces so by definition they implement different PCI domains. Thus change psycho(4) to use PCI domains instead of reenumerating all PCI busses so they have globally unique bus numbers and drop support for reenumerating busses in the OFW PCI code. According to CVS history reenumeration was also required in order to get some E450 to boot but given that no other open source kernel changes the PCI bus numbers assigned by the firmware I believe the real problem was that the old code used the bus number as the device number for the PCI busses and unlike most of the other machines the firmwares of the problematic ones don't use disjoint PCI bus numbers across the host-PCI-bridges. MFC after: 1 month
121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
/*-
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* Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
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* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 2000 BSDi
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* Copyright (c) 2001 - 2003 Thomas Moestl <tmm@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: FreeBSD: src/sys/dev/pci/pci_pci.c,v 1.3 2000/12/13
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ofw_pci.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/ofw_bus.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcib_private.h>
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#include "pcib_if.h"
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#include <sparc64/pci/ofw_pci.h>
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#include <sparc64/pci/ofw_pcib_subr.h>
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static device_probe_t ofw_pcib_probe;
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static device_attach_t ofw_pcib_attach;
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static device_method_t ofw_pcib_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ofw_pcib_probe),
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DEVMETHOD(device_attach, ofw_pcib_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_read_ivar, pcib_read_ivar),
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DEVMETHOD(bus_write_ivar, pcib_write_ivar),
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DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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/* pcib interface */
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DEVMETHOD(pcib_maxslots, pcib_maxslots),
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DEVMETHOD(pcib_read_config, pcib_read_config),
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DEVMETHOD(pcib_write_config, pcib_write_config),
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DEVMETHOD(pcib_route_interrupt, ofw_pcib_gen_route_interrupt),
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/* ofw_bus interface */
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DEVMETHOD(ofw_bus_get_node, ofw_pcib_gen_get_node),
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{ 0, 0 }
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};
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static devclass_t pcib_devclass;
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DEFINE_CLASS_0(pcib, ofw_pcib_driver, ofw_pcib_methods,
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sizeof(struct ofw_pcib_gen_softc));
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DRIVER_MODULE(ofw_pcib, pci, ofw_pcib_driver, pcib_devclass, 0, 0);
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static int
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ofw_pcib_probe(device_t dev)
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{
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if ((pci_get_class(dev) == PCIC_BRIDGE) &&
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(pci_get_subclass(dev) == PCIS_BRIDGE_PCI) &&
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ofw_bus_get_node(dev) != 0) {
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device_set_desc(dev, "OFW PCI-PCI bridge");
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return (0);
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}
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return (ENXIO);
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}
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static int
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ofw_pcib_attach(device_t dev)
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{
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ofw_pcib_gen_setup(dev);
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pcib_attach_common(dev);
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device_add_child(dev, "pci", -1);
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return (bus_generic_attach(dev));
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}
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