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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.
*/
/*
* 6.5 : Interrupt handling
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
#define _COMPONENT ACPI_OS_SERVICES
ACPI_MODULE_NAME("INTERRUPT")
static UINT32 InterruptOverride = 0;
ACPI_STATUS
AcpiOsInstallInterruptHandler(UINT32 InterruptNumber,
ACPI_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 the MADT contained an interrupt override directive for the SCI,
* we use that value instead of the one from the FADT.
*/
if (InterruptOverride != 0) {
device_printf(sc->acpi_dev,
"Overriding SCI Interrupt from IRQ %u to IRQ %u\n",
InterruptNumber, InterruptOverride);
InterruptNumber = InterruptOverride;
}
/* Set up the interrupt resource. */
sc->acpi_irq_rid = 0;
bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1);
sc->acpi_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ,
&sc->acpi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
if (sc->acpi_irq == NULL) {
device_printf(sc->acpi_dev, "could not allocate interrupt\n");
goto error;
}
if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC|INTR_MPSAFE,
(driver_intr_t *)ServiceRoutine, Context, &sc->acpi_irq_handle)) {
device_printf(sc->acpi_dev, "could not set up interrupt\n");
goto error;
}
return_ACPI_STATUS (AE_OK);
error:
if (sc->acpi_irq_handle)
bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
sc->acpi_irq_handle = NULL;
if (sc->acpi_irq)
bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
sc->acpi_irq = NULL;
bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
return_ACPI_STATUS (AE_ALREADY_EXISTS);
}
ACPI_STATUS
AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber, ACPI_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);
}
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