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/*-
* Copyright (c) 2000 Michael Smith
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* 6.5 : Interrupt handling
*/
#include "acpi.h"
#include <sys/bus.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/acpica/acpivar.h>
#define _COMPONENT ACPI_OS_SERVICES
ACPI_MODULE_NAME("INTERRUPT")
static void InterruptWrapper(void *arg);
static OSD_HANDLER InterruptHandler;
static UINT32 InterruptOverride = 0;
/*
* XXX this does not correctly free resources in the case of partically successful
* attachment.
*/
ACPI_STATUS
AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine, void *Context)
{
struct acpi_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL)
panic("can't find ACPI device to register interrupt");
if (sc->acpi_dev == NULL)
panic("acpi softc has invalid device");
if ((InterruptNumber < 0) || (InterruptNumber > 255))
return_ACPI_STATUS(AE_BAD_PARAMETER);
if (ServiceRoutine == NULL)
return_ACPI_STATUS(AE_BAD_PARAMETER);
if (InterruptHandler != NULL && InterruptHandler != ServiceRoutine) {
device_printf(sc->acpi_dev, "can't register more than one ACPI interrupt\n");
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
InterruptHandler = ServiceRoutine;
/*
* This isn't strictly true, as we ought to be able to handle > 1 interrupt. The ACPI
* spec doesn't call for this though.
*/
if (sc->acpi_irq != NULL) {
device_printf(sc->acpi_dev, "attempt to register more than one interrupt handler\n");
return_ACPI_STATUS(AE_ALREADY_EXISTS);
}
sc->acpi_irq_rid = 0;
if (InterruptOverride != 0) {
device_printf(sc->acpi_dev,
"Overriding SCI Interrupt from IRQ %u to IRQ %u\n",
InterruptNumber, InterruptOverride);
InterruptNumber = InterruptOverride;
}
bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1);
if ((sc->acpi_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ,
&sc->acpi_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(sc->acpi_dev, "could not allocate SCI interrupt\n");
return_ACPI_STATUS(AE_ALREADY_EXISTS);
}
if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC, (driver_intr_t *)InterruptWrapper,
Context, &sc->acpi_irq_handle)) {
device_printf(sc->acpi_dev, "could not set up SCI interrupt\n");
return_ACPI_STATUS(AE_ALREADY_EXISTS);
}
return_ACPI_STATUS(AE_OK);
}
ACPI_STATUS
AcpiOsRemoveInterruptHandler (UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine)
{
struct acpi_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if ((InterruptNumber < 0) || (InterruptNumber > 255))
return_ACPI_STATUS(AE_BAD_PARAMETER);
if (ServiceRoutine == NULL)
return_ACPI_STATUS(AE_BAD_PARAMETER);
if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL)
panic("can't find ACPI device to deregister interrupt");
if (sc->acpi_irq == NULL)
return_ACPI_STATUS(AE_NOT_EXIST);
bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
sc->acpi_irq = NULL;
return_ACPI_STATUS(AE_OK);
}
ACPI_STATUS
acpi_OverrideInterruptLevel(UINT32 InterruptNumber)
{
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (InterruptOverride != 0)
return_ACPI_STATUS(AE_ALREADY_EXISTS);
InterruptOverride = InterruptNumber;
return_ACPI_STATUS(AE_OK);
}
/*
* Interrupt handler wrapper.
*/
static void
InterruptWrapper(void *arg)
{
ACPI_LOCK_DECL;
ACPI_LOCK;
InterruptHandler(arg);
ACPI_UNLOCK;
}
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