X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/ff6e181ae92fc6f1e89841290f461d1f2f9badd9..ebb1b9f42b62218f29061826217bb0f71cd375a6:/iokit/Kernel/IOService.cpp

diff --git a/iokit/Kernel/IOService.cpp b/iokit/Kernel/IOService.cpp
index 88f7def63..f08348272 100644
--- a/iokit/Kernel/IOService.cpp
+++ b/iokit/Kernel/IOService.cpp
@@ -1,14 +1,19 @@
 /*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2009 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
@@ -18,13 +23,15 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
  
 #include <IOKit/system.h>
 
 #include <IOKit/IOService.h>
+#include <libkern/OSDebug.h>
 #include <libkern/c++/OSContainers.h>
+#include <libkern/c++/OSKext.h>
 #include <libkern/c++/OSUnserialize.h>
 #include <IOKit/IOCatalogue.h>
 #include <IOKit/IOCommand.h>
@@ -38,14 +45,18 @@
 #include <IOKit/IOBSD.h>
 #include <IOKit/IOUserClient.h>
 #include <IOKit/IOWorkLoop.h>
+#include <IOKit/IOTimeStamp.h>
 #include <mach/sync_policy.h>
 #include <IOKit/assert.h>
 #include <sys/errno.h>
 
-//#define LOG kprintf
-#define LOG IOLog
+#include <machine/pal_routines.h>
+
+#define LOG kprintf
+//#define LOG IOLog
 
 #include "IOServicePrivate.h"
+#include "IOKitKernelInternal.h"
 
 // take lockForArbitration before LOCKNOTIFY
 
@@ -92,14 +103,23 @@ const OSSymbol *		gIOMatchCategoryKey;
 const OSSymbol *		gIODefaultMatchCategoryKey;
 const OSSymbol *		gIOMatchedServiceCountKey;
 
+const OSSymbol *		gIOMapperIDKey;
 const OSSymbol *		gIOUserClientClassKey;
 const OSSymbol *		gIOKitDebugKey;
 
 const OSSymbol *		gIOCommandPoolSizeKey;
 
+const OSSymbol *		gIOConsoleLockedKey;
 const OSSymbol *		gIOConsoleUsersKey;
 const OSSymbol *		gIOConsoleSessionUIDKey;
+const OSSymbol *		gIOConsoleSessionAuditIDKey;
 const OSSymbol *		gIOConsoleUsersSeedKey;
+const OSSymbol *		gIOConsoleSessionOnConsoleKey;
+const OSSymbol *		gIOConsoleSessionLoginDoneKey;
+const OSSymbol *		gIOConsoleSessionSecureInputPIDKey;
+const OSSymbol *		gIOConsoleSessionScreenLockedTimeKey;
+
+static clock_sec_t		gIOConsoleLockTime;
 
 static int			gIOResourceGenerationCount;
 
@@ -114,6 +134,7 @@ const OSSymbol *		gIOGeneralInterest;
 const OSSymbol *		gIOBusyInterest;
 const OSSymbol *		gIOAppPowerStateInterest;
 const OSSymbol *		gIOPriorityPowerStateInterest;
+const OSSymbol *		gIOConsoleSecurityInterest;
 
 static OSDictionary * 		gNotifications;
 static IORecursiveLock *	gNotificationLock;
@@ -139,6 +160,18 @@ static OSArray *		gIOFinalizeList;
 static SInt32			gIOConsoleUsersSeed;
 static OSData *			gIOConsoleUsersSeedValue;
 
+extern const OSSymbol *		gIODTPHandleKey;
+
+const OSSymbol *		gIOPlatformSleepActionKey;
+const OSSymbol *		gIOPlatformWakeActionKey;
+const OSSymbol *		gIOPlatformQuiesceActionKey;
+const OSSymbol *		gIOPlatformActiveActionKey;
+
+const OSSymbol *		gIOPlatformFunctionHandlerSet;
+
+static IOLock *			gIOConsoleUsersLock;
+static thread_call_t		gIOConsoleLockCallout;
+
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #define LOCKREADNOTIFY()	\
@@ -150,6 +183,8 @@ static OSData *			gIOConsoleUsersSeedValue;
     IORecursiveLockUnlock( gNotificationLock )
 #define SLEEPNOTIFY(event) \
     IORecursiveLockSleep( gNotificationLock, (void *)(event), THREAD_UNINT )
+#define SLEEPNOTIFYTO(event, deadline) \
+    IORecursiveLockSleepDeadline( gNotificationLock, (void *)(event), deadline, THREAD_UNINT )
 #define WAKEUPNOTIFY(event) \
 	IORecursiveLockWakeup( gNotificationLock, (void *)(event), /* wake one */ false )
 
@@ -190,6 +225,38 @@ static IOLock *     gArbitrationLockQueueLock;
 bool IOService::isInactive( void ) const
     { return( 0 != (kIOServiceInactiveState & getState())); }
 
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#if defined(__i386__) || defined(__x86_64__)
+
+// Only used by the intel implementation of
+//     IOService::requireMaxBusStall(UInt32 ns)
+//     IOService::requireMaxInterruptDelay(uint32_t ns)
+struct CpuDelayEntry
+{
+    IOService * fService;
+    UInt32      fMaxDelay;
+    UInt32      fDelayType;
+};
+
+enum {
+    kCpuDelayBusStall, kCpuDelayInterrupt,
+    kCpuNumDelayTypes
+};
+
+static OSData          *sCpuDelayData = OSData::withCapacity(8 * sizeof(CpuDelayEntry));
+static IORecursiveLock *sCpuDelayLock = IORecursiveLockAlloc();
+static OSArray         *sCpuLatencyHandlers[kCpuNumDelayTypes];
+const OSSymbol         *sCPULatencyFunctionName[kCpuNumDelayTypes];
+
+static void
+requireMaxCpuDelay(IOService * service, UInt32 ns, UInt32 delayType);
+static IOReturn
+setLatencyHandler(UInt32 delayType, IOService * target, bool enable);
+
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 void IOService::initialize( void )
@@ -224,6 +291,8 @@ void IOService::initialize( void )
     gIOInterruptSpecifiersKey
 	= OSSymbol::withCStringNoCopy("IOInterruptSpecifiers");
 
+    gIOMapperIDKey = OSSymbol::withCStringNoCopy(kIOMapperIDKey);
+
     gIOKitDebugKey	= OSSymbol::withCStringNoCopy( kIOKitDebugKey );
 
     gIOCommandPoolSizeKey	= OSSymbol::withCStringNoCopy( kIOCommandPoolSizeKey );
@@ -232,6 +301,7 @@ void IOService::initialize( void )
     gIOBusyInterest   		= OSSymbol::withCStringNoCopy( kIOBusyInterest );
     gIOAppPowerStateInterest   	= OSSymbol::withCStringNoCopy( kIOAppPowerStateInterest );
     gIOPriorityPowerStateInterest   	= OSSymbol::withCStringNoCopy( kIOPriorityPowerStateInterest );
+    gIOConsoleSecurityInterest 	= OSSymbol::withCStringNoCopy( kIOConsoleSecurityInterest );
 
     gNotifications		= OSDictionary::withCapacity( 1 );
     gIOPublishNotification	= OSSymbol::withCStringNoCopy(
@@ -246,11 +316,29 @@ void IOService::initialize( void )
 						 kIOTerminatedNotification );
     gIOServiceKey		= OSSymbol::withCStringNoCopy( kIOServiceClass);
 
+    gIOConsoleLockedKey		= OSSymbol::withCStringNoCopy( kIOConsoleLockedKey);
     gIOConsoleUsersKey		= OSSymbol::withCStringNoCopy( kIOConsoleUsersKey);
     gIOConsoleSessionUIDKey	= OSSymbol::withCStringNoCopy( kIOConsoleSessionUIDKey);
-    gIOConsoleUsersSeedKey	= OSSymbol::withCStringNoCopy( kIOConsoleUsersSeedKey);
-    gIOConsoleUsersSeedValue	= OSData::withBytesNoCopy(&gIOConsoleUsersSeed, sizeof(gIOConsoleUsersSeed));
+    gIOConsoleSessionAuditIDKey	= OSSymbol::withCStringNoCopy( kIOConsoleSessionAuditIDKey);
+
+    gIOConsoleUsersSeedKey	         = OSSymbol::withCStringNoCopy(kIOConsoleUsersSeedKey);
+    gIOConsoleSessionOnConsoleKey        = OSSymbol::withCStringNoCopy(kIOConsoleSessionOnConsoleKey);
+    gIOConsoleSessionLoginDoneKey        = OSSymbol::withCStringNoCopy(kIOConsoleSessionLoginDoneKey);
+    gIOConsoleSessionSecureInputPIDKey   = OSSymbol::withCStringNoCopy(kIOConsoleSessionSecureInputPIDKey);
+    gIOConsoleSessionScreenLockedTimeKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionScreenLockedTimeKey);
 
+    gIOConsoleUsersSeedValue	       = OSData::withBytesNoCopy(&gIOConsoleUsersSeed, sizeof(gIOConsoleUsersSeed));
+	
+    gIOPlatformSleepActionKey	= OSSymbol::withCStringNoCopy(kIOPlatformSleepActionKey);
+    gIOPlatformWakeActionKey	= OSSymbol::withCStringNoCopy(kIOPlatformWakeActionKey);
+    gIOPlatformQuiesceActionKey	= OSSymbol::withCStringNoCopy(kIOPlatformQuiesceActionKey);
+    gIOPlatformActiveActionKey	= OSSymbol::withCStringNoCopy(kIOPlatformActiveActionKey);
+
+    gIOPlatformFunctionHandlerSet		= OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerSet);
+#if defined(__i386__) || defined(__x86_64__)
+    sCPULatencyFunctionName[kCpuDelayBusStall]	= OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerMaxBusDelay);
+    sCPULatencyFunctionName[kCpuDelayInterrupt]	= OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerMaxInterruptDelay);
+#endif
     gNotificationLock	 	= IORecursiveLockAlloc();
 
     assert( gIOServicePlane && gIODeviceMemoryKey
@@ -261,6 +349,7 @@ void IOService::initialize( void )
         && gIOPublishNotification && gIOMatchedNotification
         && gIOTerminatedNotification && gIOServiceKey
 	&& gIOConsoleUsersKey && gIOConsoleSessionUIDKey
+    && gIOConsoleSessionOnConsoleKey && gIOConsoleSessionSecureInputPIDKey
 	&& gIOConsoleUsersSeedKey && gIOConsoleUsersSeedValue);
 
     gJobsLock	= IOLockAlloc();
@@ -268,9 +357,16 @@ void IOService::initialize( void )
 
     gIOServiceBusyLock = IOLockAlloc();
 
+    gIOConsoleUsersLock = IOLockAlloc();
+
     err = semaphore_create(kernel_task, &gJobsSemaphore, SYNC_POLICY_FIFO, 0);
 
-    assert( gIOServiceBusyLock && gJobs && gJobsLock && (err == KERN_SUCCESS) );
+    gIOConsoleLockCallout = thread_call_allocate(&IOService::consoleLockTimer, NULL);
+
+    IORegistryEntry::getRegistryRoot()->setProperty(gIOConsoleLockedKey, kOSBooleanTrue);
+
+    assert( gIOServiceBusyLock && gJobs && gJobsLock && gIOConsoleUsersLock
+    		&& gIOConsoleLockCallout && (err == KERN_SUCCESS) );
 
     gIOResources = IOResources::resources();
     assert( gIOResources );
@@ -331,6 +427,8 @@ void IOService::stop( IOService * provider )
 
 void IOService::free( void )
 {
+    requireMaxBusStall(0);
+    requireMaxInterruptDelay(0);
     if( getPropertyTable())
         unregisterAllInterest();
     PMfree();
@@ -485,6 +583,8 @@ void IOService::startMatching( IOOptionBits options )
 	|| ((provider = getProvider())
 		&& (provider->__state[1] & kIOServiceSynchronousState));
 
+	if ( options & kIOServiceAsynchronous )
+		sync = false;
 
     needConfig =  (0 == (__state[1] & (kIOServiceNeedConfigState | kIOServiceConfigState)))
 	       && (0 == (__state[0] & kIOServiceInactiveState));
@@ -497,7 +597,6 @@ void IOService::startMatching( IOOptionBits options )
 //			OSKernelStackRemaining(), getName());
 
     if( needConfig) {
-	prevBusy = _adjustBusy( 1 );
         needWake = (0 != (kIOServiceSyncPubState & __state[1]));
     }
 
@@ -510,6 +609,8 @@ void IOService::startMatching( IOOptionBits options )
 
     if( needConfig) {
 
+	prevBusy = _adjustBusy( 1 );
+
         if( needWake) {
             IOLockLock( gIOServiceBusyLock );
             thread_wakeup( (event_t) this/*&__state[1]*/ );
@@ -561,7 +662,7 @@ IOReturn IOService::catalogNewDrivers( OSOrderedSet * newTables )
     while( (table = (OSDictionary *) newTables->getFirstObject())) {
 
 	LOCKWRITENOTIFY();
-        set = (OSSet *) getExistingServices( table, 
+        set = (OSSet *) copyExistingServices( table, 
 						kIOServiceRegisteredState,
 						kIOServiceExistingSet);
 	UNLOCKNOTIFY();
@@ -580,7 +681,7 @@ IOReturn IOService::catalogNewDrivers( OSOrderedSet * newTables )
 
 #if IOMATCHDEBUG
 	if( getDebugFlags( table ) & kIOLogMatch)
-	    LOG("Matching service count = %ld\n", count);
+	    LOG("Matching service count = %ld\n", (long)count);
 #endif
 	newTables->removeObject(table);
     }
@@ -781,9 +882,23 @@ IOReturn IOService::callPlatformFunction( const OSSymbol * functionName,
 					  void *param3, void *param4 )
 {
   IOReturn  result = kIOReturnUnsupported;
-  IOService *provider = getProvider();
-  
-  if (provider != 0) {
+  IOService *provider;
+
+  if (gIOPlatformFunctionHandlerSet == functionName)
+  {
+#if defined(__i386__) || defined(__x86_64__)
+    const OSSymbol * functionHandlerName = (const OSSymbol *) param1;
+    IOService *	     target		 = (IOService *) param2;
+    bool	     enable		 = (param3 != 0);
+
+    if (sCPULatencyFunctionName[kCpuDelayBusStall] == functionHandlerName)
+	result = setLatencyHandler(kCpuDelayBusStall, target, enable);
+    else if (sCPULatencyFunctionName[kCpuDelayInterrupt] == param1)
+	result = setLatencyHandler(kCpuDelayInterrupt, target, enable);
+#endif /* defined(__i386__) || defined(__x86_64__) */
+  }
+
+  if ((kIOReturnUnsupported == result) && (provider = getProvider())) {
     result = provider->callPlatformFunction(functionName, waitForFunction,
 					    param1, param2, param3, param4);
   }
@@ -1279,18 +1394,18 @@ IOReturn IOService::messageClient( UInt32 type, OSObject * client,
     return( ret );
 }
 
-void IOService::applyToInterested( const OSSymbol * typeOfInterest,
-                                   OSObjectApplierFunction applier,
-                                   void * context )
+static void
+applyToInterestNotifiers(const IORegistryEntry *target,
+			 const OSSymbol * typeOfInterest,
+			 OSObjectApplierFunction applier,
+			 void * context )
 {
     OSArray *		copyArray = 0;
 
-    applyToClients( (IOServiceApplierFunction) applier, context );
-
     LOCKREADNOTIFY();
 
     IOCommand *notifyList =
-	OSDynamicCast( IOCommand, getProperty( typeOfInterest ));
+	OSDynamicCast( IOCommand, target->getProperty( typeOfInterest ));
 
     if( notifyList) {
         copyArray = OSArray::withCapacity(1);
@@ -1315,6 +1430,15 @@ void IOService::applyToInterested( const OSSymbol * typeOfInterest,
     }
 }
 
+void IOService::applyToInterested( const OSSymbol * typeOfInterest,
+                                   OSObjectApplierFunction applier,
+                                   void * context )
+{
+    if (gIOGeneralInterest == typeOfInterest)
+	applyToClients( (IOServiceApplierFunction) applier, context );
+    applyToInterestNotifiers(this, typeOfInterest, applier, context);
+}
+
 struct MessageClientsContext {
     IOService *	service;
     UInt32	type;
@@ -1366,6 +1490,7 @@ IONotifier * IOService::registerInterest( const OSSymbol * typeOfInterest,
     if( (typeOfInterest != gIOGeneralInterest)
      && (typeOfInterest != gIOBusyInterest)
      && (typeOfInterest != gIOAppPowerStateInterest)
+     && (typeOfInterest != gIOConsoleSecurityInterest)
      && (typeOfInterest != gIOPriorityPowerStateInterest))
         return( 0 );
 
@@ -1437,6 +1562,7 @@ void IOService::unregisterAllInterest( void )
     cleanInterestList( getProperty( gIOBusyInterest ));
     cleanInterestList( getProperty( gIOAppPowerStateInterest ));
     cleanInterestList( getProperty( gIOPriorityPowerStateInterest ));
+    cleanInterestList( getProperty( gIOConsoleSecurityInterest ));
 }
 
 /*
@@ -1479,7 +1605,7 @@ void _IOServiceInterestNotifier::remove()
     LOCKWRITENOTIFY();
 
     if( queue_next( &chain )) {
-	remqueue( 0, &chain);
+	remqueue(&chain);
 	queue_next( &chain) = queue_prev( &chain) = 0;
 	release();
     }
@@ -1527,9 +1653,9 @@ void _IOServiceInterestNotifier::enable( bool was )
 
 #define tailQ(o)		setObject(o)
 #define headQ(o)		setObject(0, o)
-#define TLOG(fmt, args...)  	{ if(kIOLogYield & gIOKitDebug) IOLog(fmt, ## args); }
+#define TLOG(fmt, args...)  	{ if(kIOLogYield & gIOKitDebug) { IOLog("[%llx] ", thread_tid(current_thread())); IOLog(fmt, ## args); }}
 
-inline void _workLoopAction( IOWorkLoop::Action action,
+static void _workLoopAction( IOWorkLoop::Action action,
                              IOService * service,
                              void * p0 = 0, void * p1 = 0,
                              void * p2 = 0, void * p3 = 0 )
@@ -1563,15 +1689,25 @@ bool IOService::requestTerminate( IOService * provider, IOOptionBits options )
 
 bool IOService::terminatePhase1( IOOptionBits options )
 {
-    IOService *		victim;
-    IOService *		client;
-    OSIterator *	iter;
-    OSArray *		makeInactive;
-    bool		ok;
-    bool		didInactive;
-    bool		startPhase2 = false;
-
-    TLOG("%s::terminatePhase1(%08lx)\n", getName(), options);
+    IOService *	 victim;
+    IOService *	 client;
+    OSIterator * iter;
+    OSArray *	 makeInactive;
+	int          waitResult = THREAD_AWAKENED;
+	bool         wait;
+    bool		 ok;
+    bool		 didInactive;
+    bool		 startPhase2 = false;
+
+    TLOG("%s::terminatePhase1(%08llx)\n", getName(), (long long)options);
+
+    uint64_t regID = getRegistryEntryID();
+    IOServiceTrace(
+	IOSERVICE_TERMINATE_PHASE1,
+	(uintptr_t) regID, 
+	(uintptr_t) (regID >> 32),
+	(uintptr_t) this,
+	(uintptr_t) options);
 
     // -- compat
     if( options & kIOServiceRecursing) {
@@ -1589,16 +1725,38 @@ bool IOService::terminatePhase1( IOOptionBits options )
 
     while( victim ) {
 
-	didInactive = victim->lockForArbitration( true );
+		didInactive = victim->lockForArbitration( true );
         if( didInactive) {
             didInactive = (0 == (victim->__state[0] & kIOServiceInactiveState));
             if( didInactive) {
                 victim->__state[0] |= kIOServiceInactiveState;
                 victim->__state[0] &= ~(kIOServiceRegisteredState | kIOServiceMatchedState
                                         | kIOServiceFirstPublishState | kIOServiceFirstMatchState);
+
+				if (victim == this)
+					victim->__state[1] |= kIOServiceTermPhase1State;
+
                 victim->_adjustBusy( 1 );
-            }
-	    victim->unlockForArbitration();
+
+            } else if (victim != this) do {
+
+				IOLockLock(gIOServiceBusyLock);
+				wait = (victim->__state[1] & kIOServiceTermPhase1State);
+				if( wait) {
+				    TLOG("%s::waitPhase1(%s)\n", getName(), victim->getName());
+					victim->__state[1] |= kIOServiceTerm1WaiterState;
+					victim->unlockForArbitration();
+					assert_wait((event_t)&victim->__state[1], THREAD_UNINT);
+				}
+				IOLockUnlock(gIOServiceBusyLock);
+				if( wait) {
+					waitResult = thread_block(THREAD_CONTINUE_NULL);
+				    TLOG("%s::did waitPhase1(%s)\n", getName(), victim->getName());
+					victim->lockForArbitration();
+				}
+			} while( wait && (waitResult != THREAD_TIMED_OUT));
+
+			victim->unlockForArbitration();
         }
         if( victim == this)
             startPhase2 = didInactive;
@@ -1610,11 +1768,22 @@ bool IOService::terminatePhase1( IOOptionBits options )
             iter = victim->getClientIterator();
             if( iter) {
                 while( (client = (IOService *) iter->getNextObject())) {
-                    TLOG("%s::requestTerminate(%s, %08lx)\n",
-                            client->getName(), victim->getName(), options);
+                    TLOG("%s::requestTerminate(%s, %08llx)\n",
+                            client->getName(), victim->getName(), (long long)options);
                     ok = client->requestTerminate( victim, options );
                     TLOG("%s::requestTerminate(%s, ok = %d)\n",
                             client->getName(), victim->getName(), ok);
+
+		    uint64_t regID1 = client->getRegistryEntryID();
+		    uint64_t regID2 = victim->getRegistryEntryID();
+		    IOServiceTrace(
+			(ok ? IOSERVICE_TERMINATE_REQUEST_OK
+			   : IOSERVICE_TERMINATE_REQUEST_FAIL),
+			(uintptr_t) regID1, 
+			(uintptr_t) (regID1 >> 32),
+			(uintptr_t) regID2, 
+			(uintptr_t) (regID2 >> 32));
+
                     if( ok)
                         makeInactive->setObject( client );
                 }
@@ -1632,8 +1801,21 @@ bool IOService::terminatePhase1( IOOptionBits options )
     makeInactive->release();
 
     if( startPhase2)
-        scheduleTerminatePhase2( options );
+    {
+		lockForArbitration();
+		__state[1] &= ~kIOServiceTermPhase1State;
+		if (kIOServiceTerm1WaiterState & __state[1])
+		{
+			__state[1] &= ~kIOServiceTerm1WaiterState;
+			TLOG("%s::wakePhase1\n", getName());
+			IOLockLock( gIOServiceBusyLock );
+			thread_wakeup( (event_t) &__state[1]);
+			IOLockUnlock( gIOServiceBusyLock );
+		}
+		unlockForArbitration();
 
+        scheduleTerminatePhase2( options );
+    }
     return( true );
 }
 
@@ -1677,8 +1859,8 @@ void IOService::scheduleTerminatePhase2( IOOptionBits options )
                 waitResult = IOLockSleepDeadline( gJobsLock, &gIOTerminateWork,
                                                   deadline, THREAD_UNINT );
                 if( waitResult == THREAD_TIMED_OUT) {
-                    TLOG("%s::terminate(kIOServiceSynchronous) timeout", getName());
-				}
+                    IOLog("%s::terminate(kIOServiceSynchronous) timeout\n", getName());
+		}
             }
         } while(gIOTerminateWork || (wait && (waitResult != THREAD_TIMED_OUT)));
 
@@ -1691,7 +1873,7 @@ void IOService::scheduleTerminatePhase2( IOOptionBits options )
         gIOTerminatePhase2List->setObject( this );
         if( 0 == gIOTerminateWork++) {
 	    if( !gIOTerminateThread)
-		gIOTerminateThread = IOCreateThread( &terminateThread, (void *) options );
+		kernel_thread_start(&terminateThread, (void *) options, &gIOTerminateThread);
 	    else
 		IOLockWakeup(gJobsLock, (event_t) &gIOTerminateWork, /* one-thread */ false );
 	}
@@ -1702,13 +1884,14 @@ void IOService::scheduleTerminatePhase2( IOOptionBits options )
     release();
 }
 
-void IOService::terminateThread( void * arg )
+void IOService::terminateThread( void * arg, wait_result_t waitResult )
 {
     IOLockLock( gJobsLock );
 
     while (gIOTerminateWork)
-	terminateWorker( (IOOptionBits) arg );
+	terminateWorker( (uintptr_t) arg );
 
+    thread_deallocate(gIOTerminateThread);
     gIOTerminateThread = 0;
     IOLockWakeup( gJobsLock, (event_t) &gIOTerminateThread, /* one-thread */ false);
 
@@ -1719,13 +1902,22 @@ void IOService::scheduleStop( IOService * provider )
 {
     TLOG("%s::scheduleStop(%s)\n", getName(), provider->getName());
 
+    uint64_t regID1 = getRegistryEntryID();
+    uint64_t regID2 = provider->getRegistryEntryID();
+    IOServiceTrace(
+	IOSERVICE_TERMINATE_SCHEDULE_STOP,
+	(uintptr_t) regID1, 
+	(uintptr_t) (regID1 >> 32),
+	(uintptr_t) regID2, 
+	(uintptr_t) (regID2 >> 32));
+
     IOLockLock( gJobsLock );
     gIOStopList->tailQ( this );
     gIOStopProviderList->tailQ( provider );
 
     if( 0 == gIOTerminateWork++) {
         if( !gIOTerminateThread)
-            gIOTerminateThread = IOCreateThread( &terminateThread, (void *) 0 );
+	    kernel_thread_start(&terminateThread, (void *) 0, &gIOTerminateThread);
         else
             IOLockWakeup(gJobsLock, (event_t) &gIOTerminateWork, /* one-thread */ false );
     }
@@ -1737,12 +1929,19 @@ void IOService::scheduleFinalize( void )
 {
     TLOG("%s::scheduleFinalize\n", getName());
 
+    uint64_t regID1 = getRegistryEntryID();
+    IOServiceTrace(
+	IOSERVICE_TERMINATE_SCHEDULE_FINALIZE,
+	(uintptr_t) regID1, 
+	(uintptr_t) (regID1 >> 32),
+	0, 0);
+
     IOLockLock( gJobsLock );
     gIOFinalizeList->tailQ( this );
 
     if( 0 == gIOTerminateWork++) {
         if( !gIOTerminateThread)
-            gIOTerminateThread = IOCreateThread( &terminateThread, (void *) 0 );
+	    kernel_thread_start(&terminateThread, (void *) 0, &gIOTerminateThread);
         else
             IOLockWakeup(gJobsLock, (event_t) &gIOTerminateWork, /* one-thread */ false );
     }
@@ -1777,7 +1976,9 @@ bool IOService::didTerminate( IOService * provider, IOOptionBits options, bool *
 }
 
 void IOService::actionWillTerminate( IOService * victim, IOOptionBits options, 
-                                    OSArray * doPhase2List )
+				     OSArray * doPhase2List,
+				     void *unused2 __unused,
+				     void *unused3 __unused  )
 {
     OSIterator * iter;
     IOService *	 client;
@@ -1786,8 +1987,18 @@ void IOService::actionWillTerminate( IOService * victim, IOOptionBits options,
     iter = victim->getClientIterator();
     if( iter) {
         while( (client = (IOService *) iter->getNextObject())) {
-            TLOG("%s::willTerminate(%s, %08lx)\n",
-                    client->getName(), victim->getName(), options);
+            TLOG("%s::willTerminate(%s, %08llx)\n",
+                    client->getName(), victim->getName(), (long long)options);
+
+	    uint64_t regID1 = client->getRegistryEntryID();
+	    uint64_t regID2 = victim->getRegistryEntryID();
+	    IOServiceTrace(
+		IOSERVICE_TERMINATE_WILL,
+		(uintptr_t) regID1, 
+		(uintptr_t) (regID1 >> 32),
+		(uintptr_t) regID2, 
+		(uintptr_t) (regID2 >> 32));
+
             ok = client->willTerminate( victim, options );
             doPhase2List->tailQ( client );
         }
@@ -1795,7 +2006,9 @@ void IOService::actionWillTerminate( IOService * victim, IOOptionBits options,
     }
 }
 
-void IOService::actionDidTerminate( IOService * victim, IOOptionBits options )
+void IOService::actionDidTerminate( IOService * victim, IOOptionBits options,
+			    void *unused1 __unused, void *unused2 __unused,
+			    void *unused3 __unused )
 {
     OSIterator * iter;
     IOService *	 client;
@@ -1806,9 +2019,20 @@ void IOService::actionDidTerminate( IOService * victim, IOOptionBits options )
     iter = victim->getClientIterator();
     if( iter) {
         while( (client = (IOService *) iter->getNextObject())) {
-            TLOG("%s::didTerminate(%s, %08lx)\n",
-                    client->getName(), victim->getName(), options);
+            TLOG("%s::didTerminate(%s, %08llx)\n",
+                    client->getName(), victim->getName(), (long long)options);
             client->didTerminate( victim, options, &defer );
+
+	    uint64_t regID1 = client->getRegistryEntryID();
+	    uint64_t regID2 = victim->getRegistryEntryID();
+	    IOServiceTrace(
+		(defer ? IOSERVICE_TERMINATE_DID_DEFER
+		       : IOSERVICE_TERMINATE_DID),
+		(uintptr_t) regID1, 
+		(uintptr_t) (regID1 >> 32),
+		(uintptr_t) regID2, 
+		(uintptr_t) (regID2 >> 32));
+
             TLOG("%s::didTerminate(%s, defer %d)\n",
                     client->getName(), victim->getName(), defer);
         }
@@ -1816,15 +2040,37 @@ void IOService::actionDidTerminate( IOService * victim, IOOptionBits options )
     }
 }
 
-void IOService::actionFinalize( IOService * victim, IOOptionBits options )
+void IOService::actionFinalize( IOService * victim, IOOptionBits options,
+			    void *unused1 __unused, void *unused2 __unused,
+			    void *unused3 __unused )
 {
-    TLOG("%s::finalize(%08lx)\n", victim->getName(), options);
+    TLOG("%s::finalize(%08llx)\n", victim->getName(), (long long)options);
+
+    uint64_t regID1 = victim->getRegistryEntryID();
+    IOServiceTrace(
+	IOSERVICE_TERMINATE_FINALIZE,
+	(uintptr_t) regID1, 
+	(uintptr_t) (regID1 >> 32),
+	0, 0);
+
     victim->finalize( options );
 }
 
-void IOService::actionStop( IOService * provider, IOService * client )
+void IOService::actionStop( IOService * provider, IOService * client,
+			    void *unused1 __unused, void *unused2 __unused,
+			    void *unused3 __unused )
 {
     TLOG("%s::stop(%s)\n", client->getName(), provider->getName());
+
+    uint64_t regID1 = provider->getRegistryEntryID();
+    uint64_t regID2 = client->getRegistryEntryID();
+    IOServiceTrace(
+	IOSERVICE_TERMINATE_STOP,
+	(uintptr_t) regID1, 
+	(uintptr_t) (regID1 >> 32),
+	(uintptr_t) regID2, 
+	(uintptr_t) (regID2 >> 32));
+
     client->stop( provider );
     if( provider->isOpen( client ))
         provider->close( client );
@@ -1934,10 +2180,30 @@ void IOService::terminateWorker( IOOptionBits options )
                 if( !provider->isChild( client, gIOServicePlane )) {
                     // may be multiply queued - nop it
                     TLOG("%s::nop stop(%s)\n", client->getName(), provider->getName());
+
+		    uint64_t regID1 = provider->getRegistryEntryID();
+		    uint64_t regID2 = client->getRegistryEntryID();
+		    IOServiceTrace(
+			IOSERVICE_TERMINATE_STOP_NOP,
+			(uintptr_t) regID1, 
+			(uintptr_t) (regID1 >> 32),
+			(uintptr_t) regID2, 
+			(uintptr_t) (regID2 >> 32));
+
                 } else {
-                    // not ready for stop if it has clients, skip it
-                    if( (client->__state[1] & kIOServiceTermPhase3State) && client->getClient()) {
+                    // a terminated client is not ready for stop if it has clients, skip it
+                    if( (kIOServiceInactiveState & client->__state[0]) && client->getClient()) {
                         TLOG("%s::defer stop(%s)\n", client->getName(), provider->getName());
+
+			uint64_t regID1 = provider->getRegistryEntryID();
+			uint64_t regID2 = client->getRegistryEntryID();
+			IOServiceTrace(
+			    IOSERVICE_TERMINATE_STOP_DEFER,
+			    (uintptr_t) regID1, 
+			    (uintptr_t) (regID1 >> 32),
+			    (uintptr_t) regID2, 
+			    (uintptr_t) (regID2 >> 32));
+
                         idx++;
                         continue;
                     }
@@ -1966,6 +2232,9 @@ void IOService::terminateWorker( IOOptionBits options )
 
         if( !moreToDo) {
             TLOG("iokit terminate done, %d stops remain\n", gIOStopList->getCount());
+	    IOServiceTrace(
+		IOSERVICE_TERMINATE_DONE,
+		(uintptr_t) gIOStopList->getCount(), 0, 0, 0);
         }
 
     } while( moreToDo );
@@ -2243,7 +2512,7 @@ SInt32 IOServiceOrdering( const OSMetaClassBase * inObj1, const OSMetaClassBase
     return ( val1 - val2 );
 }
 
-IOService * IOService::getClientWithCategory( const OSSymbol * category )
+IOService * IOService::copyClientWithCategory( const OSSymbol * category )
 {
     IOService *		service = 0;
     OSIterator *	iter;
@@ -2257,13 +2526,25 @@ IOService * IOService::getClientWithCategory( const OSSymbol * category )
             nextCat = (const OSSymbol *) OSDynamicCast( OSSymbol,
 			service->getProperty( gIOMatchCategoryKey ));
 	    if( category == nextCat)
+	    {
+		service->retain();
 		break;
+	    }
 	}
 	iter->release();
     }
     return( service );
 }
 
+IOService * IOService::getClientWithCategory( const OSSymbol * category )
+{
+    IOService *
+    service = copyClientWithCategory(category);
+    if (service)
+	service->release();
+    return (service);
+}
+
 bool IOService::invokeNotifer( _IOServiceNotifier * notify )
 {
     _IOServiceNotifierInvocation invocation;
@@ -2283,7 +2564,7 @@ bool IOService::invokeNotifer( _IOServiceNotifier * notify )
 
     if( willNotify) {
 
-        ret = (*notify->handler)( notify->target, notify->ref, this );
+	ret = (*notify->handler)(notify->target, notify->ref, this, notify);
 
         LOCKWRITENOTIFY();
         queue_remove( &notify->handlerInvocations, &invocation,
@@ -2321,9 +2602,15 @@ void IOService::probeCandidates( OSOrderedSet * matches )
     OSObject 		*	nextMatch = 0;
     bool			started;
     bool			needReloc = false;
+#if CONFIG_MACF_KEXT
+    OSBoolean		*	isSandbox = 0;
+    bool			useSandbox = false;
+#endif
 #if IOMATCHDEBUG
     SInt64			debugFlags;
 #endif
+    IOService * client = NULL;
+
 
     assert( matches );
     while( !needReloc && (nextMatch = matches->getFirstObject())) {
@@ -2357,8 +2644,8 @@ void IOService::probeCandidates( OSOrderedSet * matches )
 			match->getObject( gIOMatchCategoryKey ));
 	    if( 0 == category)
 		category = gIODefaultMatchCategoryKey;
-
-	    if( getClientWithCategory( category )) {
+	    
+	    if( (client = copyClientWithCategory(category)) ) {
 #if IOMATCHDEBUG
 		if( debugFlags & kIOLogMatch)
 		    LOG("%s: match category %s exists\n", getName(),
@@ -2366,6 +2653,10 @@ void IOService::probeCandidates( OSOrderedSet * matches )
 #endif
                 nextMatch->release();
                 nextMatch = 0;
+
+		client->release();
+		client = NULL;
+
                 continue;
 	    }
 
@@ -2429,6 +2720,8 @@ void IOService::probeCandidates( OSOrderedSet * matches )
                 if( !symbol)
                     continue;
     
+                //IOLog("%s alloc (symbol %p props %p)\n", symbol->getCStringNoCopy(), symbol, props);
+
                 // alloc the driver instance
                 inst = (IOService *) OSMetaClass::allocClassWithName( symbol);
     
@@ -2455,7 +2748,10 @@ void IOService::probeCandidates( OSOrderedSet * matches )
                 if( 0 == category)
                     category = gIODefaultMatchCategoryKey;
                 inst->setProperty( gIOMatchCategoryKey, (OSObject *) category );
-    
+#if CONFIG_MACF_KEXT
+		isSandbox = OSDynamicCast(OSBoolean,
+                            props->getObject("IOKitForceMatch"));
+#endif
                 // attach driver instance
                 if( !(inst->attach( this )))
                         continue;
@@ -2472,6 +2768,21 @@ void IOService::probeCandidates( OSOrderedSet * matches )
     
                 newInst = inst->probe( this, &score );
                 inst->detach( this );
+#if CONFIG_MACF_KEXT
+		/*
+		 * If this is the Sandbox driver and it matched, this is a
+		 * disallowed device; toss any drivers that were already
+		 * matched.
+		 */
+		if (isSandbox && isSandbox->isTrue() && newInst != 0) {
+		    if (startDict != 0) {
+			startDict->flushCollection();
+			startDict->release();
+			startDict = 0;
+		    }
+		    useSandbox = true;
+		}
+#endif
                 if( 0 == newInst) {
 #if IOMATCHDEBUG
                     if( debugFlags & kIOLogProbe)
@@ -2510,6 +2821,13 @@ void IOService::probeCandidates( OSOrderedSet * matches )
             props->release();
             if( inst)
                 inst->release();
+#if CONFIG_MACF_KEXT
+	    /*
+	     * If we're forcing the sandbox, drop out of the loop.
+	     */
+	    if (isSandbox && isSandbox->isTrue() && useSandbox)
+		    break;
+#endif
         }
         familyMatches->release();
         familyMatches = 0;
@@ -2557,16 +2875,35 @@ void IOService::probeCandidates( OSOrderedSet * matches )
     }
 
 
-    // adjust the busy count by -1 if matching is stalled for a module,
-    // or +1 if a previously stalled matching is complete.
+    // adjust the busy count by +1 if matching is stalled for a module,
+    // or -1 if a previously stalled matching is complete.
     lockForArbitration();
     SInt32 adjBusy = 0;
+    uint64_t regID = getRegistryEntryID();
+
     if( needReloc) {
         adjBusy = (__state[1] & kIOServiceModuleStallState) ? 0 : 1;
-        if( adjBusy)
+        if( adjBusy) {
+
+	    IOServiceTrace(
+		IOSERVICE_MODULESTALL,
+		(uintptr_t) regID, 
+		(uintptr_t) (regID >> 32),
+		(uintptr_t) this,
+		0);
+
             __state[1] |= kIOServiceModuleStallState;
+	}
 
     } else if( __state[1] & kIOServiceModuleStallState) {
+
+	    IOServiceTrace(
+	    IOSERVICE_MODULEUNSTALL,
+	    (uintptr_t) regID, 
+	    (uintptr_t) (regID >> 32),
+	    (uintptr_t) this,
+	    0);
+
         __state[1] &= ~kIOServiceModuleStallState;
         adjBusy = -1;
     }
@@ -2617,7 +2954,7 @@ bool IOService::startCandidate( IOService * service )
 		SUB_ABSOLUTETIME(&endTime, &startTime);
 		absolutetime_to_nanoseconds(endTime, &nano);
 		if (nano > 500000000ULL)
-		    IOLog("%s::start took %ld ms\n", service->getName(), (UInt32)(nano / 1000000ULL));
+		    IOLog("%s::start took %ld ms\n", service->getName(), (long)(UInt32)(nano / 1000000ULL));
 	    }
 	}
         if( !ok)
@@ -2626,11 +2963,6 @@ bool IOService::startCandidate( IOService * service )
     return( ok );
 }
 
-IOService * IOService::resources( void )
-{
-    return( gIOResources );
-}
-
 void IOService::publishResource( const char * key, OSObject * value )
 {
     const OSSymbol *	sym;
@@ -2707,12 +3039,12 @@ bool IOService::checkResource( OSObject * matching )
     }
 
     if( gIOKitDebug & kIOLogConfig)
-        LOG("config(%x): stalling %s\n", (int) IOThreadSelf(), getName());
+        LOG("config(%p): stalling %s\n", IOThreadSelf(), getName());
 
     waitForService( table );
 
     if( gIOKitDebug & kIOLogConfig)
-        LOG("config(%x): waking\n", (int) IOThreadSelf() );
+        LOG("config(%p): waking\n", IOThreadSelf() );
 
     return( true );
 }
@@ -2753,7 +3085,8 @@ void _IOConfigThread::configThread( void )
 	    continue;
 	if( !inst->init())
 	    continue;
-	if( !(IOCreateThread((IOThreadFunc) &_IOConfigThread::main, inst )))
+	thread_t unused;
+	if (KERN_SUCCESS != kernel_thread_start(&_IOConfigThread::main, inst, &unused))
 	    continue;
 
 	return;
@@ -2768,6 +3101,7 @@ void _IOConfigThread::configThread( void )
 
 void _IOConfigThread::free( void )
 {
+    thread_deallocate(current_thread());
     OSObject::free();
 }
 
@@ -2798,8 +3132,8 @@ void IOService::doServiceMatch( IOOptionBits options )
             __state[1] |= kIOServiceConfigState;
             __state[0] |= kIOServiceRegisteredState;
 
-            if( reRegistered && (0 == (__state[0] & kIOServiceInactiveState))) {
-
+	    keepGuessing &= (0 == (__state[0] & kIOServiceInactiveState));
+            if (reRegistered && keepGuessing) {
                 iter = OSCollectionIterator::withCollection( (OSOrderedSet *)
                         gNotifications->getObject( gIOPublishNotification ) );
                 if( iter) {
@@ -2817,7 +3151,7 @@ void IOService::doServiceMatch( IOOptionBits options )
 	    UNLOCKNOTIFY();
             unlockForArbitration();
 
-            if( matches->getCount() && (kIOReturnSuccess == getResources()))
+            if (keepGuessing && matches->getCount() && (kIOReturnSuccess == getResources()))
                 probeCandidates( matches );
             else
                 matches->release();
@@ -2865,11 +3199,13 @@ UInt32 IOService::_adjustBusy( SInt32 delta )
         if( next != this)
             next->lockForArbitration();
         count = next->__state[1] & kIOServiceBusyStateMask;
-        assert( count < kIOServiceBusyMax);
         wasQuiet = (0 == count);
-        assert( (!wasQuiet) || (delta > 0));
-        next->__state[1] += delta;
-        nowQuiet = (0 == (next->__state[1] & kIOServiceBusyStateMask));
+	if (((delta < 0) && wasQuiet) || ((delta > 0) && (kIOServiceBusyMax == count)))
+	    OSReportWithBacktrace("%s: bad busy count (%d,%d)\n", next->getName(), count, delta);
+	else
+	    count += delta;
+	next->__state[1] = (next->__state[1] & ~kIOServiceBusyStateMask) | count;
+        nowQuiet = (0 == count);
 	needWake = (0 != (kIOServiceBusyWaiterState & next->__state[1]));
 
         if( needWake) {
@@ -2882,24 +3218,41 @@ UInt32 IOService::_adjustBusy( SInt32 delta )
             next->unlockForArbitration();
 
         if( (wasQuiet || nowQuiet) ) {
-            OSArray *		array;
-            unsigned int	index;
-            OSObject *		interested;
-
-            array = OSDynamicCast( OSArray, next->getProperty( gIOBusyInterest ));
-            if( array) {
-                LOCKREADNOTIFY();
-                for( index = 0;
-                     (interested = array->getObject( index ));
-                     index++) {
-                    next->messageClient(kIOMessageServiceBusyStateChange,
-                                     interested, (void *) wasQuiet /* busy now */);
-                }
-                UNLOCKNOTIFY();
-            }
+	    uint64_t regID = next->getRegistryEntryID();
+
+		IOServiceTrace(
+		((wasQuiet/*nowBusy*/) ? IOSERVICE_BUSY : IOSERVICE_NONBUSY),
+		(uintptr_t) regID, 
+		(uintptr_t) (regID >> 32),
+		(uintptr_t) next,
+		0);
+
+	    if (wasQuiet)
+	    {
+		next->__timeBusy = mach_absolute_time();
+	    }
+	    else
+	    {
+		next->__accumBusy += mach_absolute_time() - next->__timeBusy;
+		next->__timeBusy = 0;
+	    }
 
-            if( nowQuiet && (next == gIOServiceRoot))
-                OSMetaClass::considerUnloads();
+	    MessageClientsContext context;
+
+	    context.service  = next;
+	    context.type     = kIOMessageServiceBusyStateChange;
+	    context.argument = (void *) wasQuiet;	/*nowBusy*/
+	    context.argSize  = 0;
+
+	    applyToInterestNotifiers( next, gIOBusyInterest, 
+				     &messageClientsApplier, &context );
+
+#if !NO_KEXTD
+            if( nowQuiet && (next == gIOServiceRoot)) {
+                OSKext::considerUnloads();
+                IOServiceTrace(IOSERVICE_REGISTRY_QUIET, 0, 0, 0, 0);
+            }
+#endif
         }
 
         delta = nowQuiet ? -1 : +1;
@@ -2916,13 +3269,40 @@ void IOService::adjustBusy( SInt32 delta )
     unlockForArbitration();
 }
 
+uint64_t IOService::getAccumulatedBusyTime( void )
+{
+    uint64_t accumBusy = __accumBusy;
+    uint64_t timeBusy = __timeBusy;
+    uint64_t nano;
+
+    do
+    {
+	accumBusy = __accumBusy;
+	timeBusy  = __timeBusy;
+	if (timeBusy)
+	    accumBusy += mach_absolute_time() - timeBusy;
+    }
+    while (timeBusy != __timeBusy);
+
+    absolutetime_to_nanoseconds(*(AbsoluteTime *)&accumBusy, &nano);
+
+    return (nano);
+}
+
 UInt32 IOService::getBusyState( void )
 {
     return( __state[1] & kIOServiceBusyStateMask );
 }
 
 IOReturn IOService::waitForState( UInt32 mask, UInt32 value,
-				 mach_timespec_t * timeout )
+				  mach_timespec_t * timeout )
+{
+    panic("waitForState");
+    return (kIOReturnUnsupported);
+}
+
+IOReturn IOService::waitForState( UInt32 mask, UInt32 value,
+				   uint64_t timeout )
 {
     bool            wait;
     int             waitResult = THREAD_AWAKENED;
@@ -2936,23 +3316,17 @@ IOReturn IOService::waitForState( UInt32 mask, UInt32 value,
         if( wait) {
             __state[1] |= kIOServiceBusyWaiterState;
             unlockForArbitration();
-            if( timeout ) {
+            if( timeout != UINT64_MAX ) {
                 if( computeDeadline ) {
                     AbsoluteTime  nsinterval;
-                    clock_interval_to_absolutetime_interval(
-                          timeout->tv_sec, kSecondScale, &abstime );
-                    clock_interval_to_absolutetime_interval(
-                          timeout->tv_nsec, kNanosecondScale, &nsinterval );
-                    ADD_ABSOLUTETIME( &abstime, &nsinterval );
-                    clock_absolutetime_interval_to_deadline(
-                          abstime, &abstime );
+                    nanoseconds_to_absolutetime(timeout, &nsinterval );
+                    clock_absolutetime_interval_to_deadline(nsinterval, &abstime);
                     computeDeadline = false;
                 }
-
-				assert_wait_deadline((event_t)this, THREAD_UNINT, __OSAbsoluteTime(abstime));
+                assert_wait_deadline((event_t)this, THREAD_UNINT, __OSAbsoluteTime(abstime));
             }
-			else
-				assert_wait((event_t)this, THREAD_UNINT );
+            else
+                assert_wait((event_t)this, THREAD_UNINT );
         } else
             unlockForArbitration();
         IOLockUnlock( gIOServiceBusyLock );
@@ -2967,11 +3341,27 @@ IOReturn IOService::waitForState( UInt32 mask, UInt32 value,
         return( kIOReturnSuccess );
 }
 
-IOReturn IOService::waitQuiet( mach_timespec_t * timeout )
+IOReturn IOService::waitQuiet( uint64_t timeout )
 {
     return( waitForState( kIOServiceBusyStateMask, 0, timeout ));
 }
 
+IOReturn IOService::waitQuiet( mach_timespec_t * timeout )
+{
+    uint64_t    timeoutNS;
+
+    if (timeout)
+    {
+	timeoutNS = timeout->tv_sec;
+	timeoutNS *= kSecondScale;
+	timeoutNS += timeout->tv_nsec;
+    }
+    else
+	timeoutNS = UINT64_MAX;
+
+    return( waitForState( kIOServiceBusyStateMask, 0, timeoutNS ));
+}
+
 bool IOService::serializeProperties( OSSerialize * s ) const
 {
 #if 0
@@ -2982,11 +3372,21 @@ bool IOService::serializeProperties( OSSerialize * s ) const
 }
 
 
-void _IOConfigThread::main( _IOConfigThread * self )
+void _IOConfigThread::main(void * arg, wait_result_t result)
 {
-    _IOServiceJob *	job;
-    IOService 	*	nub;
-    bool		alive = true;
+    _IOConfigThread * self = (_IOConfigThread *) arg;
+    _IOServiceJob * job;
+    IOService 	*   nub;
+    bool	    alive = true;
+    kern_return_t   kr;
+    thread_precedence_policy_data_t precedence = { -1 };
+
+    kr = thread_policy_set(current_thread(), 
+			    THREAD_PRECEDENCE_POLICY, 
+			    (thread_policy_t) &precedence, 
+			    THREAD_PRECEDENCE_POLICY_COUNT);
+    if (KERN_SUCCESS != kr)
+	IOLog("thread_policy_set(%d)\n", kr);
 
     do {
 
@@ -3010,8 +3410,8 @@ void _IOConfigThread::main( _IOConfigThread * self )
 	  nub = job->nub;
 
           if( gIOKitDebug & kIOLogConfig)
-            LOG("config(%x): starting on %s, %d\n",
-                        (int) IOThreadSelf(), job->nub->getName(), job->type);
+            LOG("config(%p): starting on %s, %d\n",
+                        IOThreadSelf(), job->nub->getName(), job->type);
 
 	  switch( job->type) {
 
@@ -3020,8 +3420,8 @@ void _IOConfigThread::main( _IOConfigThread * self )
 		break;
 
             default:
-                LOG("config(%x): strange type (%d)\n",
-			(int) IOThreadSelf(), job->type );
+                LOG("config(%p): strange type (%d)\n",
+			IOThreadSelf(), job->type );
 		break;
             }
 
@@ -3045,7 +3445,7 @@ void _IOConfigThread::main( _IOConfigThread * self )
     } while( alive );
 
     if( gIOKitDebug & kIOLogConfig)
-        LOG("config(%x): terminating\n", (int) IOThreadSelf() );
+        LOG("config(%p): terminating\n", IOThreadSelf() );
 
     self->release();
 }
@@ -3055,7 +3455,7 @@ IOReturn IOService::waitMatchIdle( UInt32 msToWait )
     bool            wait;
     int             waitResult = THREAD_AWAKENED;
     bool            computeDeadline = true;
-    AbsoluteTime    abstime;
+    AbsoluteTime    deadline;
 
     IOLockLock( gJobsLock );
     do {
@@ -3063,14 +3463,12 @@ IOReturn IOService::waitMatchIdle( UInt32 msToWait )
         if( wait) {
             if( msToWait) {
                 if( computeDeadline ) {
-                    clock_interval_to_absolutetime_interval(
-                          msToWait, kMillisecondScale, &abstime );
-                    clock_absolutetime_interval_to_deadline(
-                          abstime, &abstime );
+                    clock_interval_to_deadline(
+                          msToWait, kMillisecondScale, &deadline );
                     computeDeadline = false;
                 }
 			  waitResult = IOLockSleepDeadline( gJobsLock, &gNumConfigThreads,
-								abstime, THREAD_UNINT );
+								deadline, THREAD_UNINT );
 	    	   } else {
 			  waitResult = IOLockSleep( gJobsLock, &gNumConfigThreads,
 								THREAD_UNINT );
@@ -3121,7 +3519,7 @@ void _IOServiceJob::pingConfig( _IOServiceJob * job )
 }
 
 // internal - call with gNotificationLock
-OSObject * IOService::getExistingServices( OSDictionary * matching,
+OSObject * IOService::copyExistingServices( OSDictionary * matching,
 		 IOOptionBits inState, IOOptionBits options )
 {
     OSObject *		current = 0;
@@ -3143,7 +3541,10 @@ OSObject * IOService::getExistingServices( OSDictionary * matching,
 	  &&  service->passiveMatch( matching ))
 	{
 	    if( options & kIONotifyOnce)
+	    {
+		service->retain();
 		current = service;
+	    }
 	    else
 		current = OSSet::withObjects(
 				(const OSObject **) &service, 1, 1 );
@@ -3162,6 +3563,7 @@ OSObject * IOService::getExistingServices( OSDictionary * matching,
 		    &&  service->passiveMatch( matching )) {
     
 			if( options & kIONotifyOnce) {
+			    service->retain();
 			    current = service;
 			    break;
 			}
@@ -3194,7 +3596,7 @@ OSIterator * IOService::getMatchingServices( OSDictionary * matching )
     // is a lock even needed?
     LOCKWRITENOTIFY();
 
-    iter = (OSIterator *) getExistingServices( matching,
+    iter = (OSIterator *) copyExistingServices( matching,
 						kIOServiceMatchedState );
     
     UNLOCKNOTIFY();
@@ -3202,11 +3604,23 @@ OSIterator * IOService::getMatchingServices( OSDictionary * matching )
     return( iter );
 }
 
+struct _IOServiceMatchingNotificationHandlerRef
+{
+    IOServiceNotificationHandler handler;
+    void * ref;
+};
+
+static bool _IOServiceMatchingNotificationHandler( void * target, void * refCon,
+						   IOService * newService,
+						   IONotifier * notifier )
+{
+    return ((*((_IOServiceNotifier *) notifier)->compatHandler)(target, refCon, newService));
+}
 
 // internal - call with gNotificationLock
 IONotifier * IOService::setNotification(
 	    const OSSymbol * type, OSDictionary * matching,
-            IOServiceNotificationHandler handler, void * target, void * ref,
+            IOServiceMatchingNotificationHandler handler, void * target, void * ref,
             SInt32 priority )
 {
     _IOServiceNotifier * notify = 0;
@@ -3222,10 +3636,17 @@ IONotifier * IOService::setNotification(
     }
 
     if( notify) {
-        notify->matching = matching;
-        notify->handler = handler;
+	notify->handler = handler;
         notify->target = target;
-        notify->ref = ref;
+        notify->matching = matching;
+	matching->retain();
+	if (handler == &_IOServiceMatchingNotificationHandler)
+	{
+	    notify->compatHandler = ((_IOServiceMatchingNotificationHandlerRef *)ref)->handler;
+	    notify->ref = ((_IOServiceMatchingNotificationHandlerRef *)ref)->ref;
+	}
+	else
+	    notify->ref = ref;
         notify->priority = priority;
 	notify->state = kIOServiceNotifyEnable;
         queue_init( &notify->handlerInvocations );
@@ -3251,7 +3672,7 @@ IONotifier * IOService::setNotification(
 // internal - call with gNotificationLock
 IONotifier * IOService::doInstallNotification(
 			const OSSymbol * type, OSDictionary * matching,
-			IOServiceNotificationHandler handler,
+			IOServiceMatchingNotificationHandler handler,
 			void * target, void * ref,
 			SInt32 priority, OSIterator ** existing )
 {
@@ -3280,7 +3701,7 @@ IONotifier * IOService::doInstallNotification(
     
     if( inState)
         // get the current set
-        exist = (OSIterator *) getExistingServices( matching, inState );
+        exist = (OSIterator *) copyExistingServices( matching, inState );
     else
 	exist = 0;
 
@@ -3289,14 +3710,35 @@ IONotifier * IOService::doInstallNotification(
     return( notify );
 }
 
+#if !defined(__LP64__)
+IONotifier * IOService::installNotification(const OSSymbol * type, OSDictionary * matching,
+					IOServiceNotificationHandler handler,
+					void * target, void * refCon,
+					SInt32 priority, OSIterator ** existing )
+{
+    IONotifier * result;
+    _IOServiceMatchingNotificationHandlerRef ref;
+    ref.handler = handler;
+    ref.ref     = refCon;
+
+    result = (_IOServiceNotifier *) installNotification( type, matching,
+			 &_IOServiceMatchingNotificationHandler, 
+			target, &ref, priority, existing );
+    if (result)
+	matching->release();
+
+    return (result);
+}
+#endif /* !defined(__LP64__) */
+
 
 IONotifier * IOService::installNotification(
 			const OSSymbol * type, OSDictionary * matching,
-			IOServiceNotificationHandler handler,
+			IOServiceMatchingNotificationHandler handler,
 			void * target, void * ref,
 			SInt32 priority, OSIterator ** existing )
 {
-    IONotifier *	notify;
+    IONotifier * notify;
 
     LOCKWRITENOTIFY();
 
@@ -3311,10 +3753,31 @@ IONotifier * IOService::installNotification(
 IONotifier * IOService::addNotification(
 			const OSSymbol * type, OSDictionary * matching,
 			IOServiceNotificationHandler handler,
+			void * target, void * refCon,
+			SInt32 priority )
+{
+    IONotifier * result;
+    _IOServiceMatchingNotificationHandlerRef ref;
+    
+    ref.handler = handler;
+    ref.ref     = refCon;
+    
+    result = addMatchingNotification(type, matching, &_IOServiceMatchingNotificationHandler,
+			    target, &ref, priority);
+
+    if (result)
+	matching->release();
+
+    return (result);
+}
+
+IONotifier * IOService::addMatchingNotification(
+			const OSSymbol * type, OSDictionary * matching,
+			IOServiceMatchingNotificationHandler handler,
 			void * target, void * ref,
 			SInt32 priority )
 {
-    OSIterator *		existing;
+    OSIterator *		existing = NULL;
     _IOServiceNotifier *	notify;
     IOService *			next;
 
@@ -3339,76 +3802,93 @@ IONotifier * IOService::addNotification(
     return( notify );
 }
 
-struct SyncNotifyVars {
-    semaphore_port_t	waitHere;
-    IOService *		result;
-};
-
 bool IOService::syncNotificationHandler(
 			void * /* target */, void * ref,
-			IOService * newService )
+			IOService * newService,
+			IONotifier * notifier )
 {
 
-    // result may get written more than once before the
-    // notification is removed!
-    ((SyncNotifyVars *) ref)->result = newService;
-    semaphore_signal( ((SyncNotifyVars *) ref)->waitHere );
+    LOCKWRITENOTIFY();
+    if (!*((IOService **) ref))
+    {
+	newService->retain();
+	(*(IOService **) ref) = newService;
+	WAKEUPNOTIFY(ref);
+    }
+    UNLOCKNOTIFY();
 
     return( false );
 }
 
-IOService * IOService::waitForService( OSDictionary * matching,
-				mach_timespec_t * timeout )
+IOService * IOService::waitForMatchingService( OSDictionary * matching,
+						uint64_t timeout)
 {
     IONotifier *	notify = 0;
     // priority doesn't help us much since we need a thread wakeup
     SInt32		priority = 0;
-    SyncNotifyVars	state;
-    kern_return_t	err = kIOReturnBadArgument;
+    IOService *  	result;
 
-    if( !matching)
+    if (!matching)
         return( 0 );
 
-    state.waitHere = 0;
-    state.result = 0;
+    result = NULL;
 
     LOCKWRITENOTIFY();
-
-    do {
-
-        state.result = (IOService *) getExistingServices( matching,
+    do
+    {
+        result = (IOService *) copyExistingServices( matching,
                             kIOServiceMatchedState, kIONotifyOnce );
-	if( state.result)
-	    continue;
-
-        err = semaphore_create( kernel_task, &state.waitHere,
-                                    SYNC_POLICY_FIFO, 0 );
-        if( KERN_SUCCESS != err)
-            continue;
-
+	if (result)
+	    break;
         notify = IOService::setNotification( gIOMatchedNotification, matching,
                     &IOService::syncNotificationHandler, (void *) 0,
-                    (void *) &state, priority );
-
-    } while( false );
-
-    UNLOCKNOTIFY();
-
-     if( notify) {
-        if( timeout)
-            err = semaphore_timedwait( state.waitHere, *timeout );
+                    &result, priority );
+	 if (!notify)
+	    break;
+        if (UINT64_MAX != timeout)
+	{
+	    AbsoluteTime deadline;
+	    nanoseconds_to_absolutetime(timeout, &deadline);
+	    clock_absolutetime_interval_to_deadline(deadline, &deadline);
+	    SLEEPNOTIFYTO(&result, deadline);
+	}
         else
-            err = semaphore_wait( state.waitHere );
+	{
+	    SLEEPNOTIFY(&result);
+	}
     }
+    while( false );
+
+    UNLOCKNOTIFY();
 
-    if( notify)
+    if (notify)
         notify->remove();	// dequeues
+
+    return( result );
+}
+
+IOService * IOService::waitForService( OSDictionary * matching,
+					mach_timespec_t * timeout )
+{
+    IOService * result;
+    uint64_t    timeoutNS;
+
+    if (timeout)
+    {
+	timeoutNS = timeout->tv_sec;
+	timeoutNS *= kSecondScale;
+	timeoutNS += timeout->tv_nsec;
+    }
     else
-        matching->release();
-    if( state.waitHere)
-        semaphore_destroy( kernel_task, state.waitHere );
+	timeoutNS = UINT64_MAX;
+
+    result = waitForMatchingService(matching, timeoutNS);
+
+    matching->release();
+    if (result)
+	result->release();
 
-    return( state.result );
+    return (result);
 }
 
 void IOService::deliverNotification( const OSSymbol * type,
@@ -3542,6 +4022,47 @@ OSDictionary * IOService::resourceMatching( const char * name,
     return( table );
 }
 
+OSDictionary * IOService::propertyMatching( const OSSymbol * key, const OSObject * value,
+			OSDictionary * table )
+{
+    OSDictionary * properties;
+
+    properties = OSDictionary::withCapacity( 2 );
+    if( !properties)
+	return( 0 );
+    properties->setObject( key, value );
+
+    if( !table)
+	table = OSDictionary::withCapacity( 2 );
+    if( table)
+        table->setObject( gIOPropertyMatchKey, properties );
+
+    properties->release();
+
+    return( table );
+}
+
+OSDictionary * IOService::registryEntryIDMatching( uint64_t entryID,
+			OSDictionary * table )
+{
+    OSNumber *     num;
+
+    num = OSNumber::withNumber( entryID, 64 );
+    if( !num)
+	return( 0 );
+
+    if( !table)
+	table = OSDictionary::withCapacity( 2 );
+    if( table)
+        table->setObject( gIORegistryEntryIDKey, num );
+	
+    if (num)
+	num->release();
+
+    return( table );
+}
+
+
 /*
  * _IOServiceNotifier
  */
@@ -3642,10 +4163,38 @@ IOService * IOResources::resources( void )
     return( inst );
 }
 
+bool IOResources::init( OSDictionary * dictionary )
+{
+    // Do super init first
+    if ( !super::init() )
+        return false;
+
+    // Allow PAL layer to publish a value
+    const char *property_name;
+    int property_value;
+
+    pal_get_resource_property( &property_name, &property_value );
+
+    if( property_name ) {
+	OSNumber *num;
+	const OSSymbol *	sym;
+
+	if( (num = OSNumber::withNumber(property_value, 32)) != 0 ) {
+	    if( (sym = OSSymbol::withCString( property_name)) != 0 ) {
+		this->setProperty( sym, num );
+		sym->release();
+	    }
+	    num->release();
+	}
+    }
+
+    return true;
+}
+
 IOWorkLoop * IOResources::getWorkLoop() const
 {
-    // If we are the resource root then bringe over to the
-    // platform to get its workloop
+    // If we are the resource root
+    // then use the platform's workloop
     if (this == (IOResources *) gIOResources)
 	return getPlatform()->getWorkLoop();
     else
@@ -3679,6 +4228,100 @@ bool IOResources::matchPropertyTable( OSDictionary * table )
     return( ok );
 }
 
+void IOService::consoleLockTimer(thread_call_param_t p0, thread_call_param_t p1)
+{
+    IOService::updateConsoleUsers(NULL, 0);
+}
+
+void IOService::updateConsoleUsers(OSArray * consoleUsers, IOMessage systemMessage)
+{
+    IORegistryEntry * regEntry;
+    OSObject *        locked = kOSBooleanFalse;
+    uint32_t          idx;
+    bool              loggedIn;
+    bool              publish;
+    OSDictionary *    user;
+    static IOMessage  sSystemPower;
+
+    regEntry = IORegistryEntry::getRegistryRoot();
+
+    IOLockLock(gIOConsoleUsersLock);
+
+    if (systemMessage)
+    {
+        sSystemPower = systemMessage;
+    }
+    loggedIn = false;
+    if (consoleUsers)
+    {
+        OSNumber * num = 0;
+	for (idx = 0; 
+	      (user = OSDynamicCast(OSDictionary, consoleUsers->getObject(idx))); 
+	      idx++)
+	{
+	    loggedIn |= ((kOSBooleanTrue == user->getObject(gIOConsoleSessionOnConsoleKey))
+	      		&& (kOSBooleanTrue == user->getObject(gIOConsoleSessionLoginDoneKey)));
+	    if (!num)
+	    {
+   	        num = OSDynamicCast(OSNumber, user->getObject(gIOConsoleSessionScreenLockedTimeKey));
+	    }
+	}
+        gIOConsoleLockTime = num ? num->unsigned32BitValue() : 0;
+    }
+
+    if (!loggedIn 
+     || (kIOMessageSystemWillSleep == sSystemPower)
+     || (kIOMessageSystemPagingOff == sSystemPower))
+    {
+	locked = kOSBooleanTrue;
+    }
+    else if (gIOConsoleLockTime)
+    {
+	clock_sec_t  now;
+	clock_usec_t microsecs;
+
+	clock_get_calendar_microtime(&now, &microsecs);
+	if (gIOConsoleLockTime > now)
+	{
+	    AbsoluteTime deadline;
+	    clock_interval_to_deadline(gIOConsoleLockTime - now, kSecondScale, &deadline);
+	    thread_call_enter_delayed(gIOConsoleLockCallout, deadline);
+	}
+	else
+	{
+	    locked = kOSBooleanTrue;
+	}
+    }
+
+    publish = (consoleUsers || (locked != regEntry->getProperty(gIOConsoleLockedKey)));
+    if (publish)
+    {
+	regEntry->setProperty(gIOConsoleLockedKey, locked);
+	if (consoleUsers)
+	{
+	    regEntry->setProperty(gIOConsoleUsersKey, consoleUsers);
+	}
+	OSIncrementAtomic( &gIOConsoleUsersSeed );
+    }
+
+    IOLockUnlock(gIOConsoleUsersLock);
+
+    if (publish)
+    {
+	publishResource( gIOConsoleUsersSeedKey, gIOConsoleUsersSeedValue );
+
+	MessageClientsContext context;
+    
+	context.service  = getServiceRoot();
+	context.type     = kIOMessageConsoleSecurityChange;
+	context.argument = (void *) regEntry;
+	context.argSize  = 0;
+    
+	applyToInterestNotifiers(getServiceRoot(), gIOConsoleSecurityInterest, 
+				 &messageClientsApplier, &context );
+    }
+}
+
 IOReturn IOResources::setProperties( OSObject * properties )
 {
     IOReturn			err;
@@ -3698,15 +4341,17 @@ IOReturn IOResources::setProperties( OSObject * properties )
     if( 0 == iter)
 	return( kIOReturnBadArgument);
 
-    while( (key = OSDynamicCast(OSSymbol, iter->getNextObject()))) {
-
-	if (gIOConsoleUsersKey == key)
+    while( (key = OSDynamicCast(OSSymbol, iter->getNextObject())))
+    {
+	if (gIOConsoleUsersKey == key) do
 	{
-	    IORegistryEntry::getRegistryRoot()->setProperty(key, dict->getObject(key));
-	    OSIncrementAtomic( &gIOConsoleUsersSeed );
-	    publishResource( gIOConsoleUsersSeedKey, gIOConsoleUsersSeedValue );
-	    continue;
+	    OSArray * consoleUsers;
+	    consoleUsers = OSDynamicCast(OSArray, dict->getObject(key));
+	    if (!consoleUsers)
+		continue;
+	    IOService::updateConsoleUsers(consoleUsers, 0);
 	}
+	while (false);
 
 	publishResource( key, dict->getObject(key) );
     }
@@ -3914,6 +4559,12 @@ bool IOService::passiveMatch( OSDictionary * table, bool changesOK )
                     break;
             }
 
+            num = OSDynamicCast( OSNumber, table->getObject( gIORegistryEntryIDKey ));
+            if( num) {
+		done++;
+                match = (getRegistryEntryID() == num->unsigned64BitValue());
+	    }
+
             num = OSDynamicCast( OSNumber, table->getObject( gIOMatchedServiceCountKey ));
             if( num) {
 
@@ -3969,6 +4620,12 @@ bool IOService::passiveMatch( OSDictionary * table, bool changesOK )
 
             if( !(match = where->compareProperty( table, kIOBSDNameKey )))
                 break;
+            if( !(match = where->compareProperty( table, kIOBSDMajorKey )))
+                break;
+            if( !(match = where->compareProperty( table, kIOBSDMinorKey )))
+                break;
+            if( !(match = where->compareProperty( table, kIOBSDUnitKey )))
+                break;
 
             matchParent = false;
 
@@ -3995,7 +4652,7 @@ bool IOService::passiveMatch( OSDictionary * table, bool changesOK )
     } while( matchParent && (where = where->getProvider()) );
 
     if( kIOLogMatch & gIOKitDebug)
-        if( where != this)
+        if( where && (where != this) )
             LOG("match parent @ %s = %d\n",
                         where->getName(), match );
 
@@ -4011,6 +4668,9 @@ IOReturn IOService::newUserClient( task_t owningTask, void * securityID,
     IOUserClient *client;
     OSObject *temp;
 
+    if (kIOReturnSuccess == newUserClient( owningTask, securityID, type, handler ))
+	return kIOReturnSuccess;
+
     // First try my own properties for a user client class name
     temp = getProperty(gIOUserClientClassKey);
     if (temp) {
@@ -4028,6 +4688,7 @@ IOReturn IOService::newUserClient( task_t owningTask, void * securityID,
     if (!userClientClass)
         return kIOReturnUnsupported;
 
+    // This reference is consumed by the IOServiceOpen call
     temp = OSMetaClass::allocClassWithName(userClientClass);
     if (!temp)
         return kIOReturnNoMemory;
@@ -4062,7 +4723,7 @@ IOReturn IOService::newUserClient( task_t owningTask, void * securityID,
 IOReturn IOService::newUserClient( task_t owningTask, void * securityID,
                                     UInt32 type, IOUserClient ** handler )
 {
-    return( newUserClient( owningTask, securityID, type, 0, handler ));
+    return( kIOReturnUnsupported );
 }
 
 IOReturn IOService::requestProbe( IOOptionBits options )
@@ -4192,7 +4853,6 @@ int IOService::errnoFromReturn( IOReturn rtn )
         case kIOReturnExclusiveAccess:
         case kIOReturnLockedRead:
         case kIOReturnLockedWrite:
-        case kIOReturnNotAttached:
         case kIOReturnNotOpen:
         case kIOReturnNotReadable:
             return(EACCES);
@@ -4205,6 +4865,7 @@ int IOService::errnoFromReturn( IOReturn rtn )
             return(EBUSY);
         case kIOReturnBadMedia:
         case kIOReturnNoMedia:
+        case kIOReturnNotAttached:
         case kIOReturnUnformattedMedia:
             return(ENXIO); // (media error)
         case kIOReturnDMAError:
@@ -4297,6 +4958,200 @@ void IOService::setDeviceMemory( OSArray * array )
     setProperty( gIODeviceMemoryKey, array);
 }
 
+/*
+ * For machines where the transfers on an I/O bus can stall because
+ * the CPU is in an idle mode, These APIs allow a driver to specify
+ * the maximum bus stall that they can handle.  0 indicates no limit.
+ */
+void IOService::
+setCPUSnoopDelay(UInt32 __unused ns)
+{
+#if defined(__i386__) || defined(__x86_64__)
+    ml_set_maxsnoop(ns); 
+#endif /* defined(__i386__) || defined(__x86_64__) */
+}
+
+UInt32 IOService::
+getCPUSnoopDelay()
+{
+#if defined(__i386__) || defined(__x86_64__)
+    return ml_get_maxsnoop(); 
+#else
+    return 0;
+#endif /* defined(__i386__) || defined(__x86_64__) */
+}
+
+#if defined(__i386__) || defined(__x86_64__)
+static void
+requireMaxCpuDelay(IOService * service, UInt32 ns, UInt32 delayType)
+{
+    static const UInt kNoReplace = -1U;	// Must be an illegal index
+    UInt replace = kNoReplace;
+    bool setCpuDelay = false;
+
+    IORecursiveLockLock(sCpuDelayLock);
+
+    UInt count = sCpuDelayData->getLength() / sizeof(CpuDelayEntry);
+    CpuDelayEntry *entries = (CpuDelayEntry *) sCpuDelayData->getBytesNoCopy();
+    IOService * holder = NULL;
+
+    if (ns) {
+        const CpuDelayEntry ne = {service, ns, delayType};
+	holder = service;
+        // Set maximum delay.
+        for (UInt i = 0; i < count; i++) {
+            IOService *thisService = entries[i].fService;
+            bool sameType = (delayType == entries[i].fDelayType);            
+            if ((service == thisService) && sameType)
+                replace = i;
+            else if (!thisService) {
+                if (kNoReplace == replace)
+                    replace = i;
+            }
+            else if (sameType) {
+                const UInt32 thisMax = entries[i].fMaxDelay;
+                if (thisMax < ns)
+		{
+                    ns = thisMax;
+		    holder = thisService;
+		}
+            }
+        }
+        
+        setCpuDelay = true;
+        if (kNoReplace == replace)
+            sCpuDelayData->appendBytes(&ne, sizeof(ne));
+        else
+            entries[replace] = ne;
+    }
+    else {
+        ns = -1U;	// Set to max unsigned, i.e. no restriction
+
+        for (UInt i = 0; i < count; i++) {
+            // Clear a maximum delay.
+            IOService *thisService = entries[i].fService;
+            if (thisService && (delayType == entries[i].fDelayType)) {
+                UInt32 thisMax = entries[i].fMaxDelay;
+                if (service == thisService)
+                    replace = i;
+                else if (thisMax < ns) {
+                    ns = thisMax;
+		    holder = thisService;
+		}
+            }
+        }
+
+        // Check if entry found
+        if (kNoReplace != replace) {
+            entries[replace].fService = 0;	// Null the entry
+            setCpuDelay = true;
+        }
+    }
+
+    if (setCpuDelay)
+    {
+        // Must be safe to call from locked context
+        if (delayType == kCpuDelayBusStall)
+        {
+            ml_set_maxbusdelay(ns);
+        }
+        else if (delayType == kCpuDelayInterrupt)
+        {
+            ml_set_maxintdelay(ns);
+        }
+
+	OSArray * handlers = sCpuLatencyHandlers[delayType];
+	IOService * target;
+	if (handlers) for (unsigned int idx = 0; 
+			    (target = (IOService *) handlers->getObject(idx));
+			    idx++)
+	{
+	    target->callPlatformFunction(sCPULatencyFunctionName[delayType], false,
+					    (void *) (uintptr_t) ns, holder,
+					    NULL, NULL);
+	}
+    }
+
+    IORecursiveLockUnlock(sCpuDelayLock);
+}
+
+static IOReturn
+setLatencyHandler(UInt32 delayType, IOService * target, bool enable)
+{
+    IOReturn result = kIOReturnNotFound;
+    OSArray * array;
+    unsigned int idx;
+
+    IORecursiveLockLock(sCpuDelayLock);
+
+    do
+    {
+	if (enable && !sCpuLatencyHandlers[delayType])
+	    sCpuLatencyHandlers[delayType] = OSArray::withCapacity(4);
+	array = sCpuLatencyHandlers[delayType];
+	if (!array)
+	    break;
+	idx = array->getNextIndexOfObject(target, 0);
+	if (!enable)
+	{
+	    if (-1U != idx)
+	    {
+		array->removeObject(idx);
+		result = kIOReturnSuccess;
+	    }
+	}
+	else
+	{
+	    if (-1U != idx) {
+		result = kIOReturnExclusiveAccess;
+		break;
+	    }
+	    array->setObject(target);
+	    
+	    UInt count = sCpuDelayData->getLength() / sizeof(CpuDelayEntry);
+	    CpuDelayEntry *entries = (CpuDelayEntry *) sCpuDelayData->getBytesNoCopy();
+	    UInt32 ns = -1U;	// Set to max unsigned, i.e. no restriction
+	    IOService * holder = NULL;
+
+	    for (UInt i = 0; i < count; i++) {
+		if (entries[i].fService 
+		  && (delayType == entries[i].fDelayType) 
+		  && (entries[i].fMaxDelay < ns)) {
+		    ns = entries[i].fMaxDelay;
+		    holder = entries[i].fService;
+		}
+	    }
+	    target->callPlatformFunction(sCPULatencyFunctionName[delayType], false,
+					    (void *) (uintptr_t) ns, holder,
+					    NULL, NULL);
+	    result = kIOReturnSuccess;
+	}
+    }
+    while (false);
+
+    IORecursiveLockUnlock(sCpuDelayLock);
+
+    return (result);
+}
+
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
+void IOService::
+requireMaxBusStall(UInt32 __unused ns)
+{
+#if defined(__i386__) || defined(__x86_64__)
+    requireMaxCpuDelay(this, ns, kCpuDelayBusStall);
+#endif
+}
+
+void IOService::
+requireMaxInterruptDelay(uint32_t __unused ns)
+{
+#if defined(__i386__) || defined(__x86_64__)
+    requireMaxCpuDelay(this, ns, kCpuDelayInterrupt);
+#endif
+}
+
 /*
  * Device interrupts
  */
@@ -4453,13 +5308,21 @@ IOReturn IOService::causeInterrupt(int source)
   return interruptController->causeInterrupt(this, source);
 }
 
+#if __LP64__
+OSMetaClassDefineReservedUnused(IOService, 0);
+OSMetaClassDefineReservedUnused(IOService, 1);
+OSMetaClassDefineReservedUnused(IOService, 2);
+OSMetaClassDefineReservedUnused(IOService, 3);
+OSMetaClassDefineReservedUnused(IOService, 4);
+OSMetaClassDefineReservedUnused(IOService, 5);
+#else
 OSMetaClassDefineReservedUsed(IOService, 0);
 OSMetaClassDefineReservedUsed(IOService, 1);
 OSMetaClassDefineReservedUsed(IOService, 2);
 OSMetaClassDefineReservedUsed(IOService, 3);
-
-OSMetaClassDefineReservedUnused(IOService, 4);
-OSMetaClassDefineReservedUnused(IOService, 5);
+OSMetaClassDefineReservedUsed(IOService, 4);
+OSMetaClassDefineReservedUsed(IOService, 5);
+#endif
 OSMetaClassDefineReservedUnused(IOService, 6);
 OSMetaClassDefineReservedUnused(IOService, 7);
 OSMetaClassDefineReservedUnused(IOService, 8);
@@ -4502,19 +5365,3 @@ OSMetaClassDefineReservedUnused(IOService, 44);
 OSMetaClassDefineReservedUnused(IOService, 45);
 OSMetaClassDefineReservedUnused(IOService, 46);
 OSMetaClassDefineReservedUnused(IOService, 47);
-OSMetaClassDefineReservedUnused(IOService, 48);
-OSMetaClassDefineReservedUnused(IOService, 49);
-OSMetaClassDefineReservedUnused(IOService, 50);
-OSMetaClassDefineReservedUnused(IOService, 51);
-OSMetaClassDefineReservedUnused(IOService, 52);
-OSMetaClassDefineReservedUnused(IOService, 53);
-OSMetaClassDefineReservedUnused(IOService, 54);
-OSMetaClassDefineReservedUnused(IOService, 55);
-OSMetaClassDefineReservedUnused(IOService, 56);
-OSMetaClassDefineReservedUnused(IOService, 57);
-OSMetaClassDefineReservedUnused(IOService, 58);
-OSMetaClassDefineReservedUnused(IOService, 59);
-OSMetaClassDefineReservedUnused(IOService, 60);
-OSMetaClassDefineReservedUnused(IOService, 61);
-OSMetaClassDefineReservedUnused(IOService, 62);
-OSMetaClassDefineReservedUnused(IOService, 63);