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--- xnu/xnu-792/iokit/Kernel/IOInterruptEventSource.cpp
+++ xnu/xnu-1699.26.8/iokit/Kernel/IOInterruptEventSource.cpp
@@ -1,63 +1,63 @@
/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2010 Apple 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@
*/
-/*
-Copyright (c) 1998 Apple Computer, Inc. All rights reserved.
-
-HISTORY
- 1998-7-13 Godfrey van der Linden(gvdl)
- Created.
-*/
+
#include <IOKit/IOInterruptEventSource.h>
+#include <IOKit/IOKitDebug.h>
#include <IOKit/IOLib.h>
#include <IOKit/IOService.h>
#include <IOKit/IOInterrupts.h>
#include <IOKit/IOTimeStamp.h>
#include <IOKit/IOWorkLoop.h>
-#if KDEBUG
-
-#define IOTimeTypeStampS(t) \
-do { \
- IOTimeStampStart(IODBG_INTES(t), \
- (unsigned int) this, (unsigned int) owner); \
-} while(0)
-
-#define IOTimeTypeStampE(t) \
-do { \
- IOTimeStampEnd(IODBG_INTES(t), \
- (unsigned int) this, (unsigned int) owner); \
-} while(0)
-
-#define IOTimeStampLatency() \
-do { \
- IOTimeStampEnd(IODBG_INTES(IOINTES_LAT), \
- (unsigned int) this, (unsigned int) owner); \
-} while(0)
-
-#else /* !KDEBUG */
-#define IOTimeTypeStampS(t)
-#define IOTimeTypeStampE(t)
-#define IOTimeStampLatency()
-#endif /* KDEBUG */
+#if IOKITSTATS
+
+#define IOStatisticsInitializeCounter() \
+do { \
+ IOStatistics::setCounterType(IOEventSource::reserved->counter, kIOStatisticsInterruptEventSourceCounter); \
+} while (0)
+
+#define IOStatisticsCheckForWork() \
+do { \
+ IOStatistics::countInterruptCheckForWork(IOEventSource::reserved->counter); \
+} while (0)
+
+#define IOStatisticsInterrupt() \
+do { \
+ IOStatistics::countInterrupt(IOEventSource::reserved->counter); \
+} while (0)
+
+#else
+
+#define IOStatisticsInitializeCounter()
+#define IOStatisticsCheckForWork()
+#define IOStatisticsInterrupt()
+
+#endif // IOKITSTATS
#define super IOEventSource
@@ -84,34 +84,43 @@
provider = inProvider;
producerCount = consumerCount = 0;
autoDisable = explicitDisable = false;
- intIndex = -1;
+ intIndex = ~inIntIndex;
// Assumes inOwner holds a reference(retain) on the provider
if (inProvider) {
- int intType;
-
- res = (kIOReturnSuccess
- == inProvider->getInterruptType(inIntIndex, &intType));
- if (res) {
- IOInterruptAction intHandler;
-
- autoDisable = (intType == kIOInterruptTypeLevel);
- if (autoDisable) {
- intHandler = OSMemberFunctionCast(IOInterruptAction,
- this, &IOInterruptEventSource::disableInterruptOccurred);
- }
- else
- intHandler = OSMemberFunctionCast(IOInterruptAction,
- this, &IOInterruptEventSource::normalInterruptOccurred);
-
- res = (kIOReturnSuccess == inProvider->registerInterrupt
- (inIntIndex, this, intHandler));
- if (res)
- intIndex = inIntIndex;
- }
- }
+ res = (kIOReturnSuccess == registerInterruptHandler(inProvider, inIntIndex));
+ if (res)
+ intIndex = inIntIndex;
+ }
+
+ IOStatisticsInitializeCounter();
return res;
+}
+
+IOReturn IOInterruptEventSource::registerInterruptHandler(IOService *inProvider,
+ int inIntIndex)
+{
+ IOReturn ret;
+ int intType;
+ IOInterruptAction intHandler;
+
+ ret = inProvider->getInterruptType(inIntIndex, &intType);
+ if (kIOReturnSuccess != ret)
+ return (ret);
+
+ autoDisable = (intType == kIOInterruptTypeLevel);
+ if (autoDisable) {
+ intHandler = OSMemberFunctionCast(IOInterruptAction,
+ this, &IOInterruptEventSource::disableInterruptOccurred);
+ }
+ else
+ intHandler = OSMemberFunctionCast(IOInterruptAction,
+ this, &IOInterruptEventSource::normalInterruptOccurred);
+
+ ret = provider->registerInterrupt(inIntIndex, this, intHandler);
+
+ return (ret);
}
IOInterruptEventSource *
@@ -132,7 +141,7 @@
void IOInterruptEventSource::free()
{
- if (provider && intIndex != -1)
+ if (provider && intIndex >= 0)
provider->unregisterInterrupt(intIndex);
super::free();
@@ -140,17 +149,36 @@
void IOInterruptEventSource::enable()
{
- if (provider && intIndex != -1) {
+ if (provider && intIndex >= 0) {
provider->enableInterrupt(intIndex);
explicitDisable = false;
+ enabled = true;
}
}
void IOInterruptEventSource::disable()
{
- if (provider && intIndex != -1) {
+ if (provider && intIndex >= 0) {
provider->disableInterrupt(intIndex);
explicitDisable = true;
+ enabled = false;
+ }
+}
+
+void IOInterruptEventSource::setWorkLoop(IOWorkLoop *inWorkLoop)
+{
+ super::setWorkLoop(inWorkLoop);
+
+ if (!provider)
+ return;
+
+ if ( !inWorkLoop ) {
+ if (intIndex >= 0) {
+ provider->unregisterInterrupt(intIndex);
+ intIndex = ~intIndex;
+ }
+ } else if ((intIndex < 0) && (kIOReturnSuccess == registerInterruptHandler(provider, ~intIndex))) {
+ intIndex = ~intIndex;
}
}
@@ -174,66 +202,83 @@
unsigned int cacheProdCount = producerCount;
int numInts = cacheProdCount - consumerCount;
IOInterruptEventAction intAction = (IOInterruptEventAction) action;
-
- if (numInts > 0) {
-
- IOTimeStampLatency();
- IOTimeTypeStampS(IOINTES_CLIENT);
- IOTimeStampConstant(IODBG_INTES(IOINTES_ACTION),
- (unsigned int) intAction, (unsigned int) owner);
- (*intAction)(owner, this, numInts);
- IOTimeTypeStampE(IOINTES_CLIENT);
-
- consumerCount = cacheProdCount;
- if (autoDisable && !explicitDisable)
- enable();
- }
- else if (numInts < 0) {
- IOTimeStampLatency();
- IOTimeTypeStampS(IOINTES_CLIENT);
- IOTimeStampConstant(IODBG_INTES(IOINTES_ACTION),
- (unsigned int) intAction, (unsigned int) owner);
- (*intAction)(owner, this, -numInts);
- IOTimeTypeStampE(IOINTES_CLIENT);
-
- consumerCount = cacheProdCount;
- if (autoDisable && !explicitDisable)
- enable();
- }
-
+ bool trace = (gIOKitTrace & kIOTraceIntEventSource) ? true : false;
+
+ IOStatisticsCheckForWork();
+
+ if ( numInts > 0 )
+ {
+ if (trace)
+ IOTimeStampStartConstant(IODBG_INTES(IOINTES_ACTION),
+ (uintptr_t) intAction, (uintptr_t) owner, (uintptr_t) this, (uintptr_t) workLoop);
+
+ // Call the handler
+ (*intAction)(owner, this, numInts);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_INTES(IOINTES_ACTION),
+ (uintptr_t) intAction, (uintptr_t) owner, (uintptr_t) this, (uintptr_t) workLoop);
+
+ consumerCount = cacheProdCount;
+ if (autoDisable && !explicitDisable)
+ enable();
+ }
+
+ else if ( numInts < 0 )
+ {
+ if (trace)
+ IOTimeStampStartConstant(IODBG_INTES(IOINTES_ACTION),
+ (uintptr_t) intAction, (uintptr_t) owner, (uintptr_t) this, (uintptr_t) workLoop);
+
+ // Call the handler
+ (*intAction)(owner, this, -numInts);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_INTES(IOINTES_ACTION),
+ (uintptr_t) intAction, (uintptr_t) owner, (uintptr_t) this, (uintptr_t) workLoop);
+
+ consumerCount = cacheProdCount;
+ if (autoDisable && !explicitDisable)
+ enable();
+ }
+
return false;
}
void IOInterruptEventSource::normalInterruptOccurred
(void */*refcon*/, IOService */*prov*/, int /*source*/)
{
-IOTimeTypeStampS(IOINTES_INTCTXT);
-IOTimeStampLatency();
-
+ bool trace = (gIOKitTrace & kIOTraceIntEventSource) ? true : false;
+
+ IOStatisticsInterrupt();
producerCount++;
-
-IOTimeTypeStampS(IOINTES_SEMA);
+
+ if (trace)
+ IOTimeStampStartConstant(IODBG_INTES(IOINTES_SEMA), (uintptr_t) this, (uintptr_t) owner);
+
signalWorkAvailable();
-IOTimeTypeStampE(IOINTES_SEMA);
-
-IOTimeTypeStampE(IOINTES_INTCTXT);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_INTES(IOINTES_SEMA), (uintptr_t) this, (uintptr_t) owner);
}
void IOInterruptEventSource::disableInterruptOccurred
(void */*refcon*/, IOService *prov, int source)
{
-IOTimeTypeStampS(IOINTES_INTCTXT);
-IOTimeStampLatency();
-
+ bool trace = (gIOKitTrace & kIOTraceIntEventSource) ? true : false;
+
prov->disableInterrupt(source); /* disable the interrupt */
-
+
+ IOStatisticsInterrupt();
producerCount++;
-
-IOTimeTypeStampS(IOINTES_SEMA);
+
+ if (trace)
+ IOTimeStampStartConstant(IODBG_INTES(IOINTES_SEMA), (uintptr_t) this, (uintptr_t) owner);
+
signalWorkAvailable();
-IOTimeTypeStampE(IOINTES_SEMA);
-
-IOTimeTypeStampE(IOINTES_INTCTXT);
+
+ if (trace)
+ IOTimeStampEndConstant(IODBG_INTES(IOINTES_SEMA), (uintptr_t) this, (uintptr_t) owner);
}
void IOInterruptEventSource::interruptOccurred
@@ -244,3 +289,10 @@
else
normalInterruptOccurred(refcon, prov, source);
}
+
+IOReturn IOInterruptEventSource::warmCPU
+ (uint64_t abstime)
+{
+
+ return ml_interrupt_prewarm(abstime);
+}