/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2008 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
#include <IOKit/IOInterrupts.h>
#include <IOKit/IOInterruptController.h>
-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#define super IOService
void *refCon)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
- long wasDisabledSoft;
+ int wasDisabledSoft;
IOReturn error;
OSData *vectorData;
- IOService *originalNub;
- int originalSource;
IOOptionBits options;
bool canBeShared, shouldBeShared, wasAlreadyRegisterd;
-
+
+ IOService *originalNub = NULL; // Protected by wasAlreadyRegisterd
+ int originalSource = 0; // Protected by wasAlreadyRegisterd
+
+
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
// Get the lock for this vector.
// Check if the interrupt source can/should be shared.
canBeShared = vectorCanBeShared(vectorNumber, vector);
IODTGetInterruptOptions(nub, source, &options);
+#if defined(__i386__) || defined(__x86_64__)
+ int interruptType;
+ if (OSDynamicCast(IOPlatformDevice, getProvider()) &&
+ (getInterruptType(nub, source, &interruptType) == kIOReturnSuccess) &&
+ (kIOInterruptTypeLevel & interruptType))
+ {
+ options |= kIODTInterruptShared;
+ }
+#endif
shouldBeShared = canBeShared && (options & kIODTInterruptShared);
wasAlreadyRegisterd = vector->interruptRegistered;
vector->interruptRegistered = 1;
// Enable the original consumer's interrupt if needed.
+ // originalNub is protected by wasAlreadyRegisterd here (see line 184).
if (!wasDisabledSoft) originalNub->enableInterrupt(originalSource);
}
IOReturn IOInterruptController::unregisterInterrupt(IOService *nub, int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
// Get the lock for this vector.
int *interruptType)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
*interruptType = getVectorType(vectorNumber, vector);
IOReturn IOInterruptController::enableInterrupt(IOService *nub, int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
if (vector->interruptDisabledSoft) {
#endif
if (!getPlatform()->atInterruptLevel()) {
- while (vector->interruptActive);
+ while (vector->interruptActive)
+ {}
#if __ppc__
isync();
#endif
IOReturn IOInterruptController::disableInterrupt(IOService *nub, int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
vector->interruptDisabledSoft = 1;
#endif
if (!getPlatform()->atInterruptLevel()) {
- while (vector->interruptActive);
+ while (vector->interruptActive)
+ {}
#if __ppc__
isync();
#endif
IOReturn IOInterruptController::causeInterrupt(IOService *nub, int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
causeVector(vectorNumber, vector);
// Methods to be overridden for simplifed interrupt controller subclasses.
-bool IOInterruptController::vectorCanBeShared(long /*vectorNumber*/,
+bool IOInterruptController::vectorCanBeShared(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
return false;
}
-void IOInterruptController::initVector(long /*vectorNumber*/,
+void IOInterruptController::initVector(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
}
-int IOInterruptController::getVectorType(long /*vectorNumber*/,
+int IOInterruptController::getVectorType(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
return kIOInterruptTypeEdge;
}
-void IOInterruptController::disableVectorHard(long /*vectorNumber*/,
+void IOInterruptController::disableVectorHard(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
}
-void IOInterruptController::enableVector(long /*vectorNumber*/,
+void IOInterruptController::enableVector(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
}
-void IOInterruptController::causeVector(long /*vectorNumber*/,
+void IOInterruptController::causeVector(IOInterruptVectorNumber /*vectorNumber*/,
IOInterruptVector */*vector*/)
{
}
void *refCon)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector = 0;
OSData *vectorData;
IOInterruptState interruptState;
IOReturn IOSharedInterruptController::unregisterInterrupt(IOService *nub,
int source)
{
- IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
- OSData *vectorData;
IOInterruptState interruptState;
-
- interruptSources = nub->_interruptSources;
- vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
- vector = &vectors[vectorNumber];
-
- // Get the lock for this vector.
- IOTakeLock(vector->interruptLock);
-
- // Return success if it is not already registered
- if (!vector->interruptRegistered) {
+
+ for (vectorNumber = 0; vectorNumber < kIOSharedInterruptControllerDefaultVectors; vectorNumber++) {
+ vector = &vectors[vectorNumber];
+
+ // Get the lock for this vector.
+ IOTakeLock(vector->interruptLock);
+
+ // Return success if it is not already registered
+ if (!vector->interruptRegistered
+ || (vector->nub != nub) || (vector->source != source)) {
+ IOUnlock(vector->interruptLock);
+ continue;
+ }
+
+ // Soft disable the source and the controller too.
+ disableInterrupt(nub, source);
+
+ // Clear all the storage for the vector except for interruptLock.
+ vector->interruptActive = 0;
+ vector->interruptDisabledSoft = 0;
+ vector->interruptDisabledHard = 0;
+ vector->interruptRegistered = 0;
+ vector->nub = 0;
+ vector->source = 0;
+ vector->handler = 0;
+ vector->target = 0;
+ vector->refCon = 0;
+
+ interruptState = IOSimpleLockLockDisableInterrupt(controllerLock);
+ vectorsRegistered--;
+ IOSimpleLockUnlockEnableInterrupt(controllerLock, interruptState);
+
+ // Move along to the next one.
IOUnlock(vector->interruptLock);
- return kIOReturnSuccess;
}
-
- // Soft disable the source and the controller too.
- disableInterrupt(nub, source);
-
- // Clear all the storage for the vector except for interruptLock.
- vector->interruptActive = 0;
- vector->interruptDisabledSoft = 0;
- vector->interruptDisabledHard = 0;
- vector->interruptRegistered = 0;
- vector->nub = 0;
- vector->source = 0;
- vector->handler = 0;
- vector->target = 0;
- vector->refCon = 0;
-
- interruptState = IOSimpleLockLockDisableInterrupt(controllerLock);
- vectorsRegistered--;
- IOSimpleLockUnlockEnableInterrupt(controllerLock, interruptState);
-
- IOUnlock(vector->interruptLock);
-
+
// Re-enable the controller if all vectors are enabled.
if (vectorsEnabled == vectorsRegistered) {
controllerDisabled = 0;
provider->enableInterrupt(0);
}
-
+
return kIOReturnSuccess;
}
int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
IOInterruptState interruptState;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
interruptState = IOSimpleLockLockDisableInterrupt(controllerLock);
int source)
{
IOInterruptSource *interruptSources;
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
OSData *vectorData;
IOInterruptState interruptState;
interruptSources = nub->_interruptSources;
vectorData = interruptSources[source].vectorData;
- vectorNumber = *(long *)vectorData->getBytesNoCopy();
+ vectorNumber = *(IOInterruptVectorNumber *)vectorData->getBytesNoCopy();
vector = &vectors[vectorNumber];
interruptState = IOSimpleLockLockDisableInterrupt(controllerLock);
IOSimpleLockUnlockEnableInterrupt(controllerLock, interruptState);
if (!getPlatform()->atInterruptLevel()) {
- while (vector->interruptActive);
+ while (vector->interruptActive)
+ {}
#if __ppc__
isync();
#endif
IOService * nub,
int /*source*/)
{
- long vectorNumber;
+ IOInterruptVectorNumber vectorNumber;
IOInterruptVector *vector;
for (vectorNumber = 0; vectorNumber < numVectors; vectorNumber++) {
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