4edef187b8
I/O windows, the default is to preserve the firmware-assigned resources. PCI bus numbers are only managed if NEW_PCIB is enabled and the architecture defines a PCI_RES_BUS resource type. - Add a helper API to create top-level PCI bus resource managers for each PCI domain/segment. Host-PCI bridge drivers use this API to allocate bus numbers from their associated domain. - Change the PCI bus and CardBus drivers to allocate a bus resource for their bus number from the parent PCI bridge device. - Change the PCI-PCI and PCI-CardBus bridge drivers to allocate the full range of bus numbers from secbus to subbus from their parent bridge. The drivers also always program their primary bus register. The bridge drivers also support growing their bus range by extending the bus resource and updating subbus to match the larger range. - Add support for managing PCI bus resources to the Host-PCI bridge drivers used for amd64 and i386 (acpi_pcib, mptable_pcib, legacy_pcib, and qpi_pcib). - Define a PCI_RES_BUS resource type for amd64 and i386. Reviewed by: imp MFC after: 1 month
155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/acpica/acpi_pcibvar.h>
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#include <machine/pci_cfgreg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcib_private.h>
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#include "pcib_if.h"
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/* Hooks for the ACPI CA debugging infrastructure. */
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#define _COMPONENT ACPI_BUS
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ACPI_MODULE_NAME("PCI_PCI")
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struct acpi_pcib_softc {
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struct pcib_softc ap_pcibsc;
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ACPI_HANDLE ap_handle;
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ACPI_BUFFER ap_prt; /* interrupt routing table */
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};
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struct acpi_pcib_lookup_info {
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UINT32 address;
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ACPI_HANDLE handle;
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};
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static int acpi_pcib_pci_probe(device_t bus);
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static int acpi_pcib_pci_attach(device_t bus);
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static int acpi_pcib_read_ivar(device_t dev, device_t child,
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int which, uintptr_t *result);
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static int acpi_pcib_pci_route_interrupt(device_t pcib,
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device_t dev, int pin);
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static device_method_t acpi_pcib_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_pcib_pci_probe),
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DEVMETHOD(device_attach, acpi_pcib_pci_attach),
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/* Bus interface */
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DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
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/* pcib interface */
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DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt),
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DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep),
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DEVMETHOD_END
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};
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static devclass_t pcib_devclass;
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DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods,
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sizeof(struct acpi_pcib_softc), pcib_driver);
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DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0);
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MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
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static int
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acpi_pcib_pci_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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acpi_disabled("pci"))
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return (ENXIO);
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if (acpi_get_handle(dev) == NULL)
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return (ENXIO);
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if (pci_cfgregopen() == 0)
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return (ENXIO);
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device_set_desc(dev, "ACPI PCI-PCI bridge");
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return (-1000);
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}
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static int
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acpi_pcib_pci_attach(device_t dev)
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{
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struct acpi_pcib_softc *sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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pcib_attach_common(dev);
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sc = device_get_softc(dev);
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sc->ap_handle = acpi_get_handle(dev);
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return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.bus.sec));
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}
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static int
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acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct acpi_pcib_softc *sc = device_get_softc(dev);
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switch (which) {
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case ACPI_IVAR_HANDLE:
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*result = (uintptr_t)sc->ap_handle;
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return (0);
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}
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return (pcib_read_ivar(dev, child, which, result));
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}
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static int
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acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin)
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{
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struct acpi_pcib_softc *sc;
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sc = device_get_softc(pcib);
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/*
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* If we don't have a _PRT, fall back to the swizzle method
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* for routing interrupts.
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*/
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if (sc->ap_prt.Pointer == NULL)
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return (pcib_route_interrupt(pcib, dev, pin));
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else
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return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
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}
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