138 lines
4.5 KiB
C
138 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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* $FreeBSD$
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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 "acpi.h"
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#include <sys/bus.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.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 void InterruptWrapper(void *arg);
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static OSD_HANDLER InterruptHandler;
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/*
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* XXX this does not correctly free resources in the case of partically successful
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* attachment.
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*/
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ACPI_STATUS
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AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, 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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if (InterruptHandler != NULL && InterruptHandler != ServiceRoutine) {
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device_printf(sc->acpi_dev, "can't register more than one ACPI interrupt\n");
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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InterruptHandler = ServiceRoutine;
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/*
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* This isn't strictly true, as we ought to be able to handle > 1 interrupt. The ACPI
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* spec doesn't call for this though.
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*/
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if (sc->acpi_irq != NULL) {
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device_printf(sc->acpi_dev, "attempt to register more than one interrupt handler\n");
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return_ACPI_STATUS(AE_ALREADY_EXISTS);
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}
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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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if ((sc->acpi_irq = bus_alloc_resource(sc->acpi_dev, SYS_RES_IRQ, &sc->acpi_irq_rid, 0, ~0, 1,
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RF_SHAREABLE | RF_ACTIVE)) == NULL) {
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device_printf(sc->acpi_dev, "could not allocate SCI interrupt\n");
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return_ACPI_STATUS(AE_ALREADY_EXISTS);
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}
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if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC, (driver_intr_t *)InterruptWrapper,
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Context, &sc->acpi_irq_handle)) {
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device_printf(sc->acpi_dev, "could not set up SCI interrupt\n");
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return_ACPI_STATUS(AE_ALREADY_EXISTS);
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}
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return_ACPI_STATUS(AE_OK);
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}
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ACPI_STATUS
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AcpiOsRemoveInterruptHandler (UINT32 InterruptNumber, 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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/*
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* Interrupt handler wrapper.
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*/
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static void
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InterruptWrapper(void *arg)
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{
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ACPI_LOCK_DECL;
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ACPI_LOCK;
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InterruptHandler(arg);
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ACPI_UNLOCK;
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}
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