146 lines
4.7 KiB
C
146 lines
4.7 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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/*
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* 6.5 : Interrupt handling
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <contrib/dev/acpica/acpi.h>
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#include <dev/acpica/acpivar.h>
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#define _COMPONENT ACPI_OS_SERVICES
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ACPI_MODULE_NAME("INTERRUPT")
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static UINT32 InterruptOverride = 0;
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ACPI_STATUS
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AcpiOsInstallInterruptHandler(UINT32 InterruptNumber,
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ACPI_OSD_HANDLER ServiceRoutine, void *Context)
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{
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struct acpi_softc *sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL)
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panic("can't find ACPI device to register interrupt");
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if (sc->acpi_dev == NULL)
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panic("acpi softc has invalid device");
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if (InterruptNumber < 0 || InterruptNumber > 255)
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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if (ServiceRoutine == NULL)
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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/*
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* If the MADT contained an interrupt override directive for the SCI,
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* we use that value instead of the one from the FADT.
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*/
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if (InterruptOverride != 0) {
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device_printf(sc->acpi_dev,
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"Overriding SCI Interrupt from IRQ %u to IRQ %u\n",
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InterruptNumber, InterruptOverride);
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InterruptNumber = InterruptOverride;
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}
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/* Set up the interrupt resource. */
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sc->acpi_irq_rid = 0;
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bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1);
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sc->acpi_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ,
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&sc->acpi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
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if (sc->acpi_irq == NULL) {
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device_printf(sc->acpi_dev, "could not allocate interrupt\n");
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goto error;
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}
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if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC|INTR_MPSAFE,
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(driver_intr_t *)ServiceRoutine, Context, &sc->acpi_irq_handle)) {
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device_printf(sc->acpi_dev, "could not set up interrupt\n");
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goto error;
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}
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return_ACPI_STATUS (AE_OK);
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error:
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if (sc->acpi_irq_handle)
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bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
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sc->acpi_irq_handle = NULL;
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if (sc->acpi_irq)
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bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
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sc->acpi_irq = NULL;
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bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
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return_ACPI_STATUS (AE_ALREADY_EXISTS);
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}
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ACPI_STATUS
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AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber, ACPI_OSD_HANDLER ServiceRoutine)
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{
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struct acpi_softc *sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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if (InterruptNumber < 0 || InterruptNumber > 255)
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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if (ServiceRoutine == NULL)
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL)
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panic("can't find ACPI device to deregister interrupt");
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if (sc->acpi_irq == NULL)
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return_ACPI_STATUS (AE_NOT_EXIST);
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bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
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bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
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bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
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sc->acpi_irq = NULL;
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_STATUS
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acpi_OverrideInterruptLevel(UINT32 InterruptNumber)
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{
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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if (InterruptOverride != 0)
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return_ACPI_STATUS (AE_ALREADY_EXISTS);
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InterruptOverride = InterruptNumber;
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return_ACPI_STATUS (AE_OK);
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}
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