62508c531e
method is used by the PCI bus driver to query the power management system to determine the proper device state to be used for a device during suspend and resume. For the ACPI PCI bridge drivers this calls acpi_device_pwr_for_sleep(). This removes ACPI-specific knowledge from the PCI and PCI-PCI bridge drivers. Reviewed by: jkim
154 lines
4.5 KiB
C
154 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 <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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{0, 0}
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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.secbus));
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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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