/*
* Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * 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.
+ *
+ * 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
*/
#include "IOPMPowerStateQueue.h"
#define super IOEventSource
OSDefineMetaClassAndStructors(IOPMPowerStateQueue, IOEventSource);
-#ifdef __i386__ /* ppc does this right and doesn't need these routines */
+#ifndef __ppc__ /* ppc does this right and doesn't need these routines */
static
-void * OSDequeueAtomic(void ** inList, SInt32 inOffset)
-{
- void * oldListHead;
- void * newListHead;
+void * OSDequeueAtomic(void * volatile * inList, SInt32 inOffset)
+{
+ /* The _pointer_ is volatile, not the listhead itself */
+ void * volatile oldListHead;
+ void * volatile newListHead;
do {
oldListHead = *inList;
break;
}
- newListHead = *(void **) (((char *) oldListHead) + inOffset);
+ newListHead = *(void * volatile *) (((char *) oldListHead) + inOffset);
} while (! OSCompareAndSwap((UInt32)oldListHead,
- (UInt32)newListHead, (UInt32 *)inList));
+ (UInt32)newListHead, (volatile UInt32 *)inList));
return oldListHead;
}
static
-void OSEnqueueAtomic(void ** inList, void * inNewLink, SInt32 inOffset)
+void OSEnqueueAtomic(void * volatile * inList, void * inNewLink, SInt32 inOffset)
{
- void * oldListHead;
- void * newListHead = inNewLink;
- void ** newLinkNextPtr = (void **) (((char *) inNewLink) + inOffset);
+ /* The _pointer_ is volatile, not the listhead itself */
+ void * volatile oldListHead;
+ void * volatile newListHead = inNewLink;
+ void * volatile * newLinkNextPtr = (void * volatile *) (((char *) inNewLink) + inOffset);
do {
oldListHead = *inList;
*newLinkNextPtr = oldListHead;
} while (! OSCompareAndSwap((UInt32)oldListHead, (UInt32)newListHead,
- (UInt32 *)inList));
+ (volatile UInt32 *)inList));
}
-#endif /* __i386__ */
+#endif /* ! __ppc__ */
IOPMPowerStateQueue *IOPMPowerStateQueue::PMPowerStateQueue(OSObject *inOwner)
// Queue of powerstate changes
changes = NULL;
-#ifdef __i386__
+#ifndef __ppc__
if (!(tmpLock = IOLockAlloc())) panic("IOPMPowerStateQueue::init can't alloc lock");
#endif
return true;
new_one->state = inState;
new_one->target = inTarget;
+ // Change to queue
+#ifndef __ppc__
+ IOLockLock(tmpLock);
+#endif
+ OSEnqueueAtomic((void **)&changes, (void *)new_one, 0);
+#ifndef __ppc__
+ IOLockUnlock(tmpLock);
+#endif
+ signalWorkAvailable();
+
+ return true;
+}
+
+bool IOPMPowerStateQueue::featureChangeOccurred(
+ uint32_t inState,
+ IOService *inTarget)
+{
+ PowerChangeEntry *new_one = NULL;
+
+ new_one = (PowerChangeEntry *)IOMalloc(sizeof(PowerChangeEntry));
+ if(!new_one) return false;
+
+ new_one->actionType = IOPMPowerStateQueue::kPMFeatureChange;
+ new_one->state = inState;
+ new_one->target = inTarget;
+
// Change to queue
#ifdef __i386__
IOLockLock(tmpLock);
return true;
}
+
// checkForWork() is called in a gated context
bool IOPMPowerStateQueue::checkForWork()
{
PowerChangeEntry *theNode;
- int theState;
+ uint32_t theState;
IOService *theTarget;
- UInt16 theAction;
+ uint16_t theAction;
// Dequeue and process the state change request
-#ifdef __i386__
+#ifndef __ppc__
IOLockLock(tmpLock);
#endif
if((theNode = (PowerChangeEntry *)OSDequeueAtomic((void **)&changes, 0)))
{
-#ifdef __i386__
+#ifndef __ppc__
IOLockUnlock(tmpLock);
#endif
theState = theNode->state;
case kUnIdle:
theTarget->command_received((void *)theState, 0, 0, 0);
break;
+
+ case kPMFeatureChange:
+ theTarget->messageClients(theState, theTarget);
+ break;
}
}
-#ifdef __i386__
+#ifndef __ppc__
else {
IOLockUnlock(tmpLock);
}
projects / apple / xnu.git / blobdiff