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iokit/Kernel/IODeviceTreeSupport.cpp xnu-4570.71.2 xnu-344
--- xnu/xnu-4570.71.2/iokit/Kernel/IODeviceTreeSupport.cpp
+++ xnu/xnu-344/iokit/Kernel/IODeviceTreeSupport.cpp
@@ -1,29 +1,31 @@
 /*
- * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_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.
+ * 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.
  * 
- * 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1998 Apple Computer, Inc.  All rights reserved. 
+ *
+ * HISTORY
+ * 23 Nov 98 sdouglas, created from IODeviceTreeBus.m, & MacOS exp mgr.
+ * 05 Apr 99 sdouglas, add interrupt mapping.
+ *
  */
 
 #include <IOKit/IODeviceTreeSupport.h>
@@ -35,22 +37,13 @@
 #include <IOKit/IOLib.h>
 #include <IOKit/IOKitKeys.h>
 
-#include <pexpert/device_tree.h>
-
-#if __arm64__
-typedef UInt64  dtptr_t;
-#else
-typedef UInt32  dtptr_t;
-#endif
-
-#include <machine/machine_routines.h>
-
+#include <DeviceTree.h>
 extern "C" {
-
-int IODTGetLoaderInfo( const char *key, void **infoAddr, int *infosize );
-void IODTFreeLoaderInfo( const char *key, void *infoAddr, int infoSize );
-int IODTGetDefault(const char *key, void *infoAddr, unsigned int infoSize );
-
+    #include <machine/machine_routines.h>
+    void DTInit( void * data );
+
+    int IODTGetLoaderInfo( char *key, void **infoAddr, int *infosize );
+    void IODTFreeLoaderInfo( char *key, void *infoAddr, int infoSize );
 }
 
 #include <IOKit/assert.h>
@@ -59,16 +52,14 @@
 
 const IORegistryPlane * gIODTPlane;
 
-static OSArray *    gIODTPHandles;
-static OSArray *    gIODTPHandleMap;
-static OSData  *    gIODTResolvers;
+static OSArray *	gIODTPHandles;
+static OSArray *	gIODTPHandleMap;
 
 const OSSymbol *	gIODTNameKey;
 const OSSymbol *	gIODTUnitKey;
 const OSSymbol *	gIODTCompatibleKey;
 const OSSymbol * 	gIODTTypeKey;
 const OSSymbol * 	gIODTModelKey;
-const OSSymbol * 	gIODTTargetTypeKey;
 
 const OSSymbol * 	gIODTSizeCellKey;
 const OSSymbol * 	gIODTAddressCellKey;
@@ -83,31 +74,29 @@
 const OSSymbol *	gIODTInterruptParentKey;
 const OSSymbol *	gIODTNWInterruptMappingKey;
 
-OSDictionary   *	gIODTSharedInterrupts;
-
-static IOLock  *    gIODTResolversLock;
 
 static IORegistryEntry * MakeReferenceTable( DTEntry dtEntry, bool copy );
 static void AddPHandle( IORegistryEntry * regEntry );
 static void FreePhysicalMemory( vm_offset_t * range );
-static bool IODTMapInterruptsSharing( IORegistryEntry * regEntry, OSDictionary * allInts );
 
 IORegistryEntry *
 IODeviceTreeAlloc( void * dtTop )
 {
-    IORegistryEntry *		parent;
-    IORegistryEntry *		child;
-    IORegistryIterator *	regIter;
-    OpaqueDTEntryIterator	iter;
-    DTEntry			dtChild;
-    DTEntry			mapEntry;
-    OSArray *			stack;
-    OSData *			prop;
-    OSDictionary *		allInts;
-    vm_offset_t *		dtMap;
-    unsigned int		propSize;
-    bool			intMap;
-    bool			freeDT;
+    IORegistryEntry 	*parent;
+    IORegistryEntry		*child;
+    IORegistryIterator	*regIter;
+    DTEntryIterator		iter;
+    DTEntry				dtChild;
+    DTEntry				mapEntry;
+    OSArray				*stack;
+    OSData				*prop;
+    OSObject			*obj;
+    vm_offset_t			*dtMap;
+    int					propSize;
+    bool				intMap;
+    bool				freeDT;
+
+    IOLog("IODeviceTreeSupport ");
 
     gIODTPlane = IORegistryEntry::makePlane( kIODeviceTreePlane );
 
@@ -116,7 +105,6 @@
     gIODTCompatibleKey 	= OSSymbol::withCStringNoCopy( "compatible" );
     gIODTTypeKey 		= OSSymbol::withCStringNoCopy( "device_type" );
     gIODTModelKey 		= OSSymbol::withCStringNoCopy( "model" );
-    gIODTTargetTypeKey		= OSSymbol::withCStringNoCopy( "target-type" );
     gIODTSizeCellKey 	= OSSymbol::withCStringNoCopy( "#size-cells" );
     gIODTAddressCellKey = OSSymbol::withCStringNoCopy( "#address-cells" );
     gIODTRangeKey 		= OSSymbol::withCStringNoCopy( "ranges" );
@@ -142,9 +130,6 @@
 
     gIODTPHandles	= OSArray::withCapacity( 1 );
     gIODTPHandleMap	= OSArray::withCapacity( 1 );
-    gIODTResolvers  = OSData::withCapacity(16);
-
-    gIODTResolversLock = IOLockAlloc();
 
     gIODTInterruptCellKey
 		= OSSymbol::withCStringNoCopy("#interrupt-cells");
@@ -152,33 +137,33 @@
     assert(    gIODTDefaultInterruptController && gIODTNWInterruptMappingKey 
 	    && gIODTAAPLInterruptsKey
 	    && gIODTPHandleKey && gIODTInterruptParentKey
-	    && gIODTPHandles && gIODTPHandleMap && gIODTResolvers && gIODTResolversLock
+	    && gIODTPHandles && gIODTPHandleMap
             && gIODTInterruptCellKey
 	 );
 
     freeDT = (kSuccess == DTLookupEntry( 0, "/chosen/memory-map", &mapEntry ))
 	  && (kSuccess == DTGetProperty( mapEntry,
                 "DeviceTree", (void **) &dtMap, &propSize ))
-	  && ((2 * sizeof(uint32_t)) == propSize);
+	  && ((2 * sizeof( vm_offset_t)) == propSize);
 
     parent = MakeReferenceTable( (DTEntry)dtTop, freeDT );
 
-    stack = OSArray::withObjects( (const OSObject **) &parent, 1, 10 );
-    DTInitEntryIterator( (DTEntry)dtTop, &iter );
+    stack = OSArray::withObjects( & (const OSObject *) parent, 1, 10 );
+    DTCreateEntryIterator( (DTEntry)dtTop, &iter );
 
     do {
         parent = (IORegistryEntry *)stack->getObject( stack->getCount() - 1);
         //parent->release();
         stack->removeObject( stack->getCount() - 1);
 
-        while( kSuccess == DTIterateEntries( &iter, &dtChild) ) {
+        while( kSuccess == DTIterateEntries( iter, &dtChild) ) {
 
             child = MakeReferenceTable( dtChild, freeDT );
             child->attachToParent( parent, gIODTPlane);
 
             AddPHandle( child );
 
-            if( kSuccess == DTEnterEntry( &iter, dtChild)) {
+            if( kSuccess == DTEnterEntry( iter, dtChild)) {
                 stack->setObject( parent);
                 parent = child;
             }
@@ -187,10 +172,10 @@
         }
 
     } while( stack->getCount()
-		&& (kSuccess == DTExitEntry( &iter, &dtChild)));
+		&& (kSuccess == DTExitEntry( iter, &dtChild)));
 
     stack->release();
-    assert(kSuccess != DTExitEntry(&iter, &dtChild));
+    DTDisposeEntryIterator( iter);
 
     // parent is now root of the created tree
 
@@ -208,91 +193,76 @@
         // free original device tree
         DTInit(0);
         IODTFreeLoaderInfo( "DeviceTree",
-			    (void *)dtMap[0], (int) round_page(dtMap[1]) );
+			(void *)dtMap[0], round_page(dtMap[1]) );
     }
 
     // adjust tree
-
-    gIODTSharedInterrupts = OSDictionary::withCapacity(4);
-    allInts = OSDictionary::withCapacity(4);
     intMap = false;
     regIter = IORegistryIterator::iterateOver( gIODTPlane,
 						kIORegistryIterateRecursively );
-    assert( regIter && allInts && gIODTSharedInterrupts );
-    if( regIter && allInts && gIODTSharedInterrupts ) {
+    assert( regIter );
+    if( regIter) {
         while( (child = regIter->getNextObject())) {
-            IODTMapInterruptsSharing( child, allInts );
+            IODTMapInterrupts( child );
             if( !intMap && child->getProperty( gIODTInterruptParentKey))
                 intMap = true;
 
+            // Look for a "driver,AAPL,MacOSX,PowerPC" property.
+            if( (obj = child->getProperty( "driver,AAPL,MacOSX,PowerPC"))) {
+                gIOCatalogue->addExtensionsFromArchive((OSData *)obj);
+                child->removeProperty( "driver,AAPL,MacOSX,PowerPC");
+            }
+
+            // some gross pruning
+            child->removeProperty( "lanLib,AAPL,MacOS,PowerPC");
+
+            if( (obj = child->getProperty( "driver,AAPL,MacOS,PowerPC"))) {
+
+                if( (0 == (prop = (OSData *)child->getProperty( gIODTTypeKey )))
+                  || (strcmp( "display", (char *) prop->getBytesNoCopy())) ) {
+                    child->removeProperty( "driver,AAPL,MacOS,PowerPC");
+                }
+            }
         }
         regIter->release();
     }
-
-#if IODTSUPPORTDEBUG
-    parent->setProperty("allInts", allInts);
-    parent->setProperty("sharedInts", gIODTSharedInterrupts);
-
-    regIter = IORegistryIterator::iterateOver( gIODTPlane,
-						kIORegistryIterateRecursively );
-    if (regIter) {
-        while( (child = regIter->getNextObject())) {
-	    OSArray *
-	    array = OSDynamicCast(OSArray, child->getProperty( gIOInterruptSpecifiersKey ));
-	    for( UInt32 i = 0; array && (i < array->getCount()); i++)
-	    {
-		IOOptionBits options;
-		IOReturn ret = IODTGetInterruptOptions( child, i, &options );
-		if( (ret != kIOReturnSuccess) || options)
-		    IOLog("%s[%ld] %ld (%x)\n", child->getName(), i, options, ret);
-	    }
-	}
-        regIter->release();
-    }
-#endif
-
-    allInts->release();
 
     if( intMap)
         // set a key in the root to indicate we found NW interrupt mapping
         parent->setProperty( gIODTNWInterruptMappingKey,
                 (OSObject *) gIODTNWInterruptMappingKey );
 
+    IOLog("done\n");
+
     return( parent);
 }
 
-int IODTGetLoaderInfo( const char *key, void **infoAddr, int *infoSize )
+int IODTGetLoaderInfo( char *key, void **infoAddr, int *infoSize )
 {
     IORegistryEntry		*chosen;
     OSData				*propObj;
-    dtptr_t				*propPtr;
+    unsigned int		*propPtr;
     unsigned int		propSize;
-    int ret = -1;
 
     chosen = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane );
     if ( chosen == 0 ) return -1;
 
     propObj = OSDynamicCast( OSData, chosen->getProperty(key) );
-    if ( propObj == 0 ) goto cleanup;
+    if ( propObj == 0 ) return -1;
 
     propSize = propObj->getLength();
-    if ( propSize != (2 * sizeof(dtptr_t)) ) goto cleanup;
+    if ( propSize != (2 * sizeof(UInt32)) ) return -1;
  
-    propPtr = (dtptr_t *)propObj->getBytesNoCopy();
-    if ( propPtr == 0 ) goto cleanup;
-
-    *infoAddr = (void *)(uintptr_t) (propPtr[0]);
-    *infoSize = (int)               (propPtr[1]);
-
-    ret = 0;
-
-cleanup:
-    chosen->release();
-
-    return ret;
-}
-
-void IODTFreeLoaderInfo( const char *key, void *infoAddr, int infoSize )
+    propPtr = (unsigned int *)propObj->getBytesNoCopy();
+    if ( propPtr == 0 ) return -1;
+
+    *infoAddr = (void *)propPtr[0] ;
+    *infoSize = (int)   propPtr[1]; 
+
+    return 0;
+}
+
+void IODTFreeLoaderInfo( char *key, void *infoAddr, int infoSize )
 {
     vm_offset_t			range[2];
     IORegistryEntry		*chosen;
@@ -305,29 +275,8 @@
         chosen = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane );
         if ( chosen != 0 ) {
             chosen->removeProperty(key);
-            chosen->release();
-        }
-    }
-}
-
-int IODTGetDefault(const char *key, void *infoAddr, unsigned int infoSize )
-{
-    IORegistryEntry		*defaults;
-    OSData			*defaultObj;
-    unsigned int		defaultSize;
-
-    defaults = IORegistryEntry::fromPath( "/defaults", gIODTPlane );
-    if ( defaults == 0 ) return -1;
-
-    defaultObj = OSDynamicCast( OSData, defaults->getProperty(key) );
-    if ( defaultObj == 0 ) return -1;
-
-    defaultSize = defaultObj->getLength();
-    if ( defaultSize > infoSize) return -1;
-
-    memcpy( infoAddr, defaultObj->getBytesNoCopy(), defaultSize );
-
-    return 0;
+        }
+    }
 }
 
 static void FreePhysicalMemory( vm_offset_t * range )
@@ -348,13 +297,12 @@
     const OSSymbol		*nameKey;
     OSData				*data;
     const OSSymbol		*sym;
-    OpaqueDTPropertyIterator	dtIter;
+    DTPropertyIterator	dtIter;
     void				*prop;
-    unsigned int		propSize;
+    int					propSize;
     char				*name;
     char				location[ 32 ];
     bool				noLocation = true;
-    bool				kernelOnly;
 
     regEntry = new IOService;
 
@@ -364,12 +312,11 @@
     }
 
     if( regEntry &&
-      (kSuccess == DTInitPropertyIterator( dtEntry, &dtIter))) {
-
-        kernelOnly = (kSuccess == DTGetProperty(dtEntry, "kernel-only", &prop, &propSize));
+      (kSuccess == DTCreatePropertyIterator( dtEntry, &dtIter))) {
+
         propTable = regEntry->getPropertyTable();
 
-        while( kSuccess == DTIterateProperties( &dtIter, &name)) {
+        while( kSuccess == DTIterateProperties( dtIter, &name)) {
 
             if(  kSuccess != DTGetProperty( dtEntry, name, &prop, &propSize ))
                 continue;
@@ -383,9 +330,6 @@
             }
             assert( nameKey && data );
 
-            if (kernelOnly)
-                data->setSerializable(false);
-
             propTable->setObject( nameKey, data);
             data->release();
             nameKey->release();
@@ -400,20 +344,21 @@
 
             } else if( nameKey == gIODTUnitKey ) {
                 // all OF strings are null terminated... except this one
-                if( propSize >= (int) sizeof(location))
-                    propSize = sizeof(location) - 1;
+                if( propSize >= (int) sizeof( location))
+                    propSize = sizeof( location) - 1;
                 strncpy( location, (const char *) prop, propSize );
                 location[ propSize ] = 0;
                 regEntry->setLocation( location );
                 propTable->removeObject( gIODTUnitKey );
                 noLocation = false;
     
-            } else if(noLocation && (!strncmp(name, "reg", sizeof("reg")))) {
+            } else if( noLocation && (0 == strcmp( name, "reg"))) {
                 // default location - override later
-                snprintf(location, sizeof(location), "%X", *((uint32_t *) prop));
+                sprintf( location, "%lX", *((UInt32 *) prop) );
                 regEntry->setLocation( location );
             }
         }
+        DTDisposePropertyIterator( dtIter);
     }
 
     return( regEntry);
@@ -451,34 +396,25 @@
 static bool GetUInt32( IORegistryEntry * regEntry, const OSSymbol * name,
 			UInt32 * value )
 {
-    OSObject * obj;
-    OSData   * data;
-    bool       result;
-
-    if (!(obj = regEntry->copyProperty(name))) return (false);
-
-    result = ((data = OSDynamicCast(OSData, obj)) && (sizeof(UInt32) == data->getLength()));
-    if (result) *value = *((UInt32 *) data->getBytesNoCopy());
-
-    obj->release();
-    return(result);
-}
-
-static IORegistryEntry * IODTFindInterruptParent( IORegistryEntry * regEntry, IOItemCount index )
+    OSData	*data;
+
+    if( (data = OSDynamicCast( OSData, regEntry->getProperty( name )))
+      && (4 == data->getLength())) {
+        *value = *((UInt32 *) data->getBytesNoCopy());
+        return( true );
+    } else
+        return( false );
+}
+
+IORegistryEntry * IODTFindInterruptParent( IORegistryEntry * regEntry )
 {
     IORegistryEntry *	parent;
     UInt32		phandle;
-    OSData	    *	data;
-    unsigned int	len;
-
-    if( (data = OSDynamicCast( OSData, regEntry->getProperty( gIODTInterruptParentKey )))
-      && (sizeof(UInt32) <= (len = data->getLength()))) {
-	if (((index + 1) * sizeof(UInt32)) > len)
-	    index = 0;
-	phandle = ((UInt32 *) data->getBytesNoCopy())[index];
-	parent = FindPHandle( phandle );
-
-    } else if( 0 == regEntry->getProperty( "interrupt-controller"))
+
+    if( GetUInt32( regEntry, gIODTInterruptParentKey, &phandle))
+        parent = FindPHandle( phandle );
+
+    else if( 0 == regEntry->getProperty( "interrupt-controller"))
         parent = regEntry->getParentEntry( gIODTPlane);
     else
         parent = 0;
@@ -497,7 +433,7 @@
     assert( ok );
 
     if( ok) {
-        snprintf(buf, sizeof(buf), "IOInterruptController%08X", (uint32_t)phandle);
+        sprintf( buf, "IOInterruptController%08lX", phandle);
         sym = OSSymbol::withCString( buf );
     } else
         sym = 0;
@@ -516,8 +452,8 @@
         *aCellCount = 0;
 }
 
-static UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec, UInt32 index,
-				    OSData ** spec, const OSSymbol ** controller )
+UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec,
+				OSData ** spec, const OSSymbol ** controller )
 {
     IORegistryEntry *parent = 0;
     OSData			*data;
@@ -529,12 +465,12 @@
     UInt32			i, original_icells;
     bool			cmp, ok = false;
 
-    parent = IODTFindInterruptParent( regEntry, index );    
+    parent = IODTFindInterruptParent( regEntry );    
     IODTGetICellCounts( parent, &icells, &acells );
     addrCmp = 0;
     if( acells) {
         data = OSDynamicCast( OSData, regEntry->getProperty( "reg" ));
-        if( data && (data->getLength() >= (acells * sizeof(UInt32))))
+        if( data && (data->getLength() >= (acells * sizeof( UInt32))))
             addrCmp = (UInt32 *) data->getBytesNoCopy();
     }
     original_icells = icells;
@@ -555,7 +491,7 @@
             // found a controller - don't want to follow cascaded controllers
             parent = 0;
             *spec = OSData::withBytesNoCopy( (void *) intSpec,
-                                            icells * sizeof(UInt32));
+                                            icells * sizeof( UInt32));
             *controller = IODTInterruptControllerName( regEntry );
             ok = (*spec && *controller);
         } else if( parent && (data = OSDynamicCast( OSData,
@@ -564,7 +500,7 @@
             map = (UInt32 *) data->getBytesNoCopy();
             endMap = map + (data->getLength() / sizeof(UInt32));
             data = OSDynamicCast( OSData, regEntry->getProperty( "interrupt-map-mask" ));
-            if( data && (data->getLength() >= ((acells + icells) * sizeof(UInt32))))
+            if( data && (data->getLength() >= ((acells + icells) * sizeof( UInt32))))
                 maskCmp = (UInt32 *) data->getBytesNoCopy();
             else
                 maskCmp = 0;
@@ -632,58 +568,19 @@
     return( ok ? original_icells : 0 );
 }
 
-IOReturn IODTGetInterruptOptions( IORegistryEntry * regEntry, int source, IOOptionBits * options )
-{
-    OSArray *	controllers;
-    OSArray *	specifiers;
-    OSArray *	shared;
-    OSObject *	spec;
-    OSObject *	oneSpec;
-
-    *options = 0;
-
-    controllers = OSDynamicCast(OSArray, regEntry->getProperty(gIOInterruptControllersKey));
-    specifiers  = OSDynamicCast(OSArray, regEntry->getProperty(gIOInterruptSpecifiersKey));
-
-    if( !controllers || !specifiers)
-        return (kIOReturnNoInterrupt);
-    
-    shared = (OSArray *) gIODTSharedInterrupts->getObject(
-                        (const OSSymbol *) controllers->getObject(source) );
-    if (!shared)
-        return (kIOReturnSuccess);
-
-    spec = specifiers->getObject(source);
-    if (!spec)
-        return (kIOReturnNoInterrupt);
-
-    for (unsigned int i = 0;
-            (oneSpec = shared->getObject(i))
-            && (!oneSpec->isEqualTo(spec));
-            i++ )	{}
-
-    if (oneSpec)
-        *options = kIODTInterruptShared;
-
-    return (kIOReturnSuccess);
-}
-
-static bool IODTMapInterruptsSharing( IORegistryEntry * regEntry, OSDictionary * allInts )
-{
-    IORegistryEntry *	parent;
-    OSData *		local;
-    OSData *		local2;
-    UInt32 *		localBits;
-    UInt32 *		localEnd;
-    IOItemCount		index;
-    OSData * 		map;
-    OSObject *		oneMap;
-    OSArray *		mapped;
-    OSArray *		controllerInts;
-    const OSSymbol *	controller = 0;
-    OSArray *		controllers;
-    UInt32		skip = 1;
-    bool		ok, nw;
+bool IODTMapInterrupts( IORegistryEntry * regEntry )
+{
+    IORegistryEntry *parent;
+    OSData			*local;
+    OSData			*local2;
+    UInt32			*localBits;
+    UInt32			*localEnd;
+    OSData			*map;
+    OSArray			*mapped;
+    const OSSymbol	*controller;
+    OSArray			*controllers;
+    UInt32			skip = 1;
+    bool			ok, nw;
 
     nw = (0 == (local = OSDynamicCast( OSData,
         regEntry->getProperty( gIODTAAPLInterruptsKey))));
@@ -701,8 +598,7 @@
     }
 
     localBits = (UInt32 *) local->getBytesNoCopy();
-    localEnd = localBits + (local->getLength() / sizeof(UInt32));
-    index = 0;
+    localEnd = localBits + (local->getLength() / sizeof( UInt32));
     mapped = OSArray::withCapacity( 1 );
     controllers = OSArray::withCapacity( 1 );
 
@@ -710,63 +606,23 @@
 
     if( ok) do {
         if( nw) {
-            skip = IODTMapOneInterrupt( regEntry, localBits, index, &map, &controller );
+            skip = IODTMapOneInterrupt( regEntry, localBits, &map, &controller );
             if( 0 == skip) {
                 IOLog("%s: error mapping interrupt[%d]\n",
                         regEntry->getName(), mapped->getCount());
                 break;
             }
         } else {
-            map = OSData::withData( local, mapped->getCount() * sizeof(UInt32),
-				sizeof(UInt32));
+            map = OSData::withData( local, mapped->getCount() * sizeof( UInt32),
+				sizeof( UInt32));
             controller = gIODTDefaultInterruptController;
             controller->retain();
         }
 
-	index++;
         localBits += skip;
         mapped->setObject( map );
-        controllers->setObject( controller );
-
-        if (allInts)
-        {
-            controllerInts = (OSArray *) allInts->getObject( controller );
-            if (controllerInts)
-	    {
-                for (unsigned int i = 0; (oneMap = controllerInts->getObject(i)); i++)
-                {
-                    if (map->isEqualTo(oneMap))
-                    {
-                        controllerInts = (OSArray *) gIODTSharedInterrupts->getObject( controller );
-                        if (controllerInts)
-                            controllerInts->setObject(map);
-                        else
-                        {
-                            controllerInts = OSArray::withObjects( (const OSObject **) &map, 1, 4 );
-                            if (controllerInts)
-                            {
-                                gIODTSharedInterrupts->setObject( controller, controllerInts );
-                                controllerInts->release();
-                            }
-                        }
-                        break;
-                    }
-                }
-		if (!oneMap)
-                    controllerInts->setObject(map);
-            }
-            else
-            {
-                controllerInts = OSArray::withObjects( (const OSObject **) &map, 1, 16 );
-                if (controllerInts)
-                {
-                    allInts->setObject( controller, controllerInts );
-                    controllerInts->release();
-                }
-            }
-        }
-
         map->release();
+        controllers->setObject( (OSObject *) controller );
         controller->release();
 
     } while( localBits < localEnd);
@@ -787,32 +643,26 @@
     return( ok );
 }
 
-bool IODTMapInterrupts( IORegistryEntry * regEntry )
-{
-    return( IODTMapInterruptsSharing( regEntry, 0 ));
-}
-
 /*
  */
 
-static bool
+static const char *
 CompareKey( OSString * key,
-		const IORegistryEntry * table, const OSSymbol * propName,
-		OSString ** matchingName )
+		const IORegistryEntry * table, const OSSymbol * propName )
 {
     OSObject		*prop;
     OSData			*data;
     OSString		*string;
     const char		*ckey;
     UInt32			keyLen;
-    UInt32          nlen;
     const char		*names;
     const char		*lastName;
     bool			wild;
     bool			matched;
     const char		*result = 0;
 
-    if( 0 == (prop = table->copyProperty( propName ))) return( 0 );
+    if( 0 == (prop = table->getProperty( propName )))
+	return( 0 );
 
     if( (data = OSDynamicCast( OSData, prop ))) {
         names = (const char *) data->getBytesNoCopy();
@@ -820,48 +670,47 @@
     } else if( (string = OSDynamicCast( OSString, prop ))) {
         names = string->getCStringNoCopy();
         lastName = names + string->getLength() + 1;
-    } else names = 0;
-
-	if (names) {
-		ckey = key->getCStringNoCopy();
-		keyLen = key->getLength();
-		wild = ('*' == key->getChar( keyLen - 1 ));
-
-		do {
-			// for each name in the property
-			nlen = strnlen(names, lastName - names);
-			if( wild)
-				matched = ((nlen >= (keyLen - 1)) && (0 == strncmp(ckey, names, keyLen - 1)));
-			else
-				matched = (keyLen == nlen) && (0 == strncmp(ckey, names, keyLen));
-
-			if( matched)
-				result = names;
-
-			names = names + nlen + 1;
-
-		} while( (names < lastName) && (false == matched));
-	}
-
-    if (result && matchingName)	*matchingName = OSString::withCString( result );
-
-	if (prop) prop->release();
-
-    return (result != 0);
+    } else
+		return( 0 );
+
+    ckey = key->getCStringNoCopy();
+    keyLen = key->getLength();
+    wild = ('*' == key->getChar( keyLen - 1 ));
+
+    do {
+        // for each name in the property
+        if( wild)
+            matched = (0 == strncmp( ckey, names, keyLen - 1 ));
+        else
+            matched = (keyLen == strlen( names ))
+                    && (0 == strncmp( ckey, names, keyLen ));
+
+        if( matched)
+            result = names;
+
+        names = names + strlen( names) + 1;
+
+    } while( (names < lastName) && (false == matched));
+
+    return( result);
 }
 
 
 bool IODTCompareNubName( const IORegistryEntry * regEntry,
 			 OSString * name, OSString ** matchingName )
 {
-    bool matched;
-
-    matched = CompareKey( name, regEntry, gIODTNameKey,       matchingName)
-		   || CompareKey( name, regEntry, gIODTCompatibleKey, matchingName)
-		   || CompareKey( name, regEntry, gIODTTypeKey,       matchingName)
-		   || CompareKey( name, regEntry, gIODTModelKey,      matchingName);
-
-    return (matched);
+    const char		*result;
+    bool			matched;
+
+    matched =  (0 != (result = CompareKey( name, regEntry, gIODTNameKey)))
+	    || (0 != (result = CompareKey( name, regEntry, gIODTCompatibleKey)))
+	    || (0 != (result = CompareKey( name, regEntry, gIODTTypeKey)))
+	    || (0 != (result = CompareKey( name, regEntry, gIODTModelKey)));
+
+    if( result && matchingName)
+	*matchingName = OSString::withCString( result );
+
+    return( result != 0 );
 }
 
 bool IODTMatchNubWithKeys( IORegistryEntry * regEntry,
@@ -876,7 +725,7 @@
         result = regEntry->compareNames( obj );
 		obj->release();
     }
-#if DEBUG
+#ifdef DEBUG
     else IOLog("Couldn't unserialize %s\n", keys );
 #endif
 
@@ -927,7 +776,7 @@
     }
 
     cIter = OSCollectionIterator::withCollection( result);
-    if (result) result->release();
+    result->release();
 
     return( cIter);
 }
@@ -935,101 +784,33 @@
 
 struct IODTPersistent {
     IODTCompareAddressCellFunc	compareFunc;
+    IODTNVLocationFunc		locationFunc;
 };
 
 void IODTSetResolving( IORegistryEntry * 	regEntry,
 		IODTCompareAddressCellFunc	compareFunc,
-		IODTNVLocationFunc		locationFunc __unused )
-{
-    IODTPersistent	 persist;
-    IODTPersistent * entry;
-    OSNumber       * num;
-    unsigned int     index, count;
-
-    IOLockLock(gIODTResolversLock);
-
-    count = (gIODTResolvers->getLength() / sizeof(IODTPersistent));
-    entry = (typeof(entry)) gIODTResolvers->getBytesNoCopy();
-    for (index = 0; index < count; index++)
-    {
-	if (compareFunc == entry->compareFunc) break;
-	entry++;
-    }
-    if (index == count)
-    {
-	persist.compareFunc = compareFunc;
-	if (!gIODTResolvers->appendBytes(&persist, sizeof(IODTPersistent))) panic("IODTSetResolving");
-    }
-
-    IOLockUnlock(gIODTResolversLock);
-
-    num = OSNumber::withNumber(index, 32);
-    regEntry->setProperty(gIODTPersistKey, num);
-    OSSafeReleaseNULL(num);
-
+		IODTNVLocationFunc		locationFunc )
+{
+    IODTPersistent	persist;
+    OSData			*prop;
+
+    persist.compareFunc = compareFunc;
+    persist.locationFunc = locationFunc;
+    prop = OSData::withBytes( &persist, sizeof( persist));
+    if( !prop)
+        return;
+
+    regEntry->setProperty( gIODTPersistKey, prop);
+    prop->release();
     return;
 }
 
-#if  defined(__arm64__)
-static SInt64 DefaultCompare( UInt32 cellCount, UInt32 left[], UInt32 right[] )
-{
-    SInt64 diff = 0;
-
-    if (cellCount == 2) {
-        diff = IOPhysical32(left[1], left[0]) - IOPhysical32(right[1], right[0]);
-    } else if (cellCount == 1) {
-        diff = ( left[0] - right[0] );
-    } else {
-        panic("DefaultCompare only knows how to handle 1 or 2 cells.");
-    }
-
-    return diff;
-}
-#elif defined(__arm__) || defined(__i386__) || defined(__x86_64__)
 static SInt32 DefaultCompare( UInt32 cellCount, UInt32 left[], UInt32 right[] )
 {
-	cellCount--;
-	return( left[ cellCount ] - right[ cellCount ] ); 
-}
-#else
-#error Unknown architecture.
-#endif
-
-static void AddLengthToCells( UInt32 numCells, UInt32 *cells, UInt64 offset)
-{
-    if (numCells == 1)
-    {
-        cells[0] += (UInt32)offset;
-    }
-    else {
-#if defined(__arm64__) || defined(__arm__)
-        UInt64 sum = cells[numCells - 2] + offset;
-        cells[numCells - 2] = (UInt32)sum;
-        if (sum > UINT32_MAX) {
-            cells[numCells - 1] += (UInt32)(sum >> 32);
-        }
-#else
-        UInt64 sum = cells[numCells - 1] + offset;
-        cells[numCells - 1] = (UInt32)sum;
-        if (sum > UINT32_MAX) {
-            cells[numCells - 2] += (UInt32)(sum >> 32);
-        }
-#endif
-    }
-}
-
-static IOPhysicalAddress CellsValue( UInt32 numCells, UInt32 *cells)
-{
-    if (numCells == 1) {
-        return IOPhysical32( 0, cells[0] );
-    } else {
-#if defined(__arm64__) || defined(arm)
-        return IOPhysical32( cells[numCells - 1], cells[numCells - 2] );
-#else
-        return IOPhysical32( cells[numCells - 2], cells[numCells - 1] );
-#endif
-    }
-}
+    cellCount--;
+    return( left[ cellCount ] - right[ cellCount ] );
+}
+
 
 void IODTGetCellCounts( IORegistryEntry * regEntry,
 			    UInt32 * sizeCount, UInt32 * addressCount)
@@ -1047,157 +828,90 @@
 // Range[]: child-addr  our-addr  child-len
 // #cells:    child       ours     child
 
-bool IODTResolveAddressCell( IORegistryEntry * startEntry,
+bool IODTResolveAddressCell( IORegistryEntry * regEntry,
                              UInt32 cellsIn[],
-                             IOPhysicalAddress * phys, IOPhysicalLength * lenOut )
-{
-    IORegistryEntry	* parent;
-    IORegistryEntry * regEntry;
-    OSData	    * prop;
-	OSNumber    * num;
-	unsigned int  index, count;
+                             IOPhysicalAddress * phys, IOPhysicalLength * len )
+{
+    IORegistryEntry	*parent;
+    OSData		*prop;
     // cells in addresses at regEntry
     UInt32		sizeCells, addressCells;
     // cells in addresses below regEntry
     UInt32		childSizeCells, childAddressCells;
     UInt32		childCells;
-    UInt32		cell[ 8 ], propLen;
-    UInt64		offset = 0;
-    UInt32		endCell[ 8 ];
+    UInt32		cell[ 5 ], offset = 0, length;
     UInt32		*range;
-    UInt32		*lookRange;
-    UInt32		*startRange;
     UInt32		*endRanges;
     bool		ok = true;
-    SInt64		diff, diff2, endDiff;
-    UInt64		len, rangeLen;
+    SInt32		diff;
 
     IODTPersistent	*persist;
     IODTCompareAddressCellFunc	compare;
 
-    regEntry = startEntry;
     IODTGetCellCounts( regEntry, &childSizeCells, &childAddressCells );
     childCells = childAddressCells + childSizeCells;
 
-    if (childCells > sizeof(cell)/sizeof(cell[0]))
-        panic("IODTResolveAddressCell: Invalid device tree (%u,%u)", (uint32_t)childAddressCells, (uint32_t)childSizeCells);
-
-    bcopy( cellsIn, cell, sizeof(UInt32) * childCells );
-    *lenOut = CellsValue( childSizeCells, cellsIn + childAddressCells );
-
-    do
-    {
+    bcopy( cellsIn, cell, 4 * childCells );
+    if( childSizeCells > 1)
+        *len = IOPhysical32( cellsIn[ childAddressCells ],
+                             cellsIn[ childAddressCells + 1 ] );
+    else
+        *len = IOPhysical32( 0, cellsIn[ childAddressCells ] );
+
+    do {
         prop = OSDynamicCast( OSData, regEntry->getProperty( gIODTRangeKey ));
         if( 0 == prop) {
             /* end of the road */
-            *phys = CellsValue( childAddressCells, cell );
-            *phys += offset;
-            if (regEntry != startEntry) regEntry->release();
+            *phys = IOPhysical32( 0,  cell[ childAddressCells - 1 ] + offset);
             break;
         }
 
-        parent = regEntry->copyParentEntry( gIODTPlane );
+        parent = regEntry->getParentEntry( gIODTPlane );
         IODTGetCellCounts( parent, &sizeCells, &addressCells );
 
-        if( (propLen = prop->getLength())) {
+        if( (length = prop->getLength())) {
             // search
-            startRange = (UInt32 *) prop->getBytesNoCopy();
-            range = startRange;
-            endRanges = range + (propLen / sizeof(UInt32));
-
-            compare = NULL;
-            num = OSDynamicCast(OSNumber, regEntry->getProperty(gIODTPersistKey));
-            if (num)
-            {
-		IOLockLock(gIODTResolversLock);
-		index = num->unsigned32BitValue();
-		count = gIODTResolvers->getLength() / sizeof(IODTPersistent);
-		if (index < count)
-		{
-		    persist = ((IODTPersistent *) gIODTResolvers->getBytesNoCopy()) + index;
-		    compare = persist->compareFunc;
-		}
-		IOLockUnlock(gIODTResolversLock);
-            }
-
-            if (!compare && (addressCells == childAddressCells)) {
+            range = (UInt32 *) prop->getBytesNoCopy();
+            endRanges = range + (length / 4);
+
+            prop = (OSData *) regEntry->getProperty( gIODTPersistKey );
+            if( prop) {
+                persist = (IODTPersistent *) prop->getBytesNoCopy();
+                compare = persist->compareFunc;
+            } else
                 compare = DefaultCompare;
-	    }
-            if (!compare) {
-                panic("There is no mixed comparison function yet...");
-            }
 
             for( ok = false;
-                    range < endRanges;
-                    range += (childCells + addressCells) ) {
-
-                // is cell start within range?
+                 range < endRanges;
+                 range += (childCells + addressCells) ) {
+
+                // is cell >= range start?
                 diff = (*compare)( childAddressCells, cell, range );
-
-                if (childAddressCells > sizeof(endCell)/sizeof(endCell[0]))
-                    panic("IODTResolveAddressCell: Invalid device tree (%u)", (uint32_t)childAddressCells);
-
-                bcopy(range, endCell, childAddressCells * sizeof(UInt32));
-
-                rangeLen = CellsValue(childSizeCells, range + childAddressCells + addressCells);
-                AddLengthToCells(childAddressCells, endCell, rangeLen);
-
-                diff2 = (*compare)( childAddressCells, cell, endCell );
-
-                // if start of cell < start of range, or end of range >= start of cell, skip
-                if ((diff < 0) || (diff2 >= 0))
+                if( diff < 0)
                     continue;
-
-                len = CellsValue(childSizeCells, cell + childAddressCells);
-                ok = (0 == len);
-
-                if (!ok)
-                {
-                    // search for cell end
-                    bcopy(cell, endCell, childAddressCells * sizeof(UInt32));
-
-                    AddLengthToCells(childAddressCells, endCell, len - 1);
-
-                    for( lookRange = startRange;
-                            lookRange < endRanges;
-                            lookRange += (childCells + addressCells) )
-                    {
-                        // make sure end of cell >= range start
-                        endDiff = (*compare)( childAddressCells, endCell, lookRange );
-                        if( endDiff < 0)
-                            continue;
-
-                        UInt64 rangeStart = CellsValue(addressCells, range + childAddressCells);
-                        UInt64 lookRangeStart = CellsValue(addressCells, lookRange + childAddressCells);
-                        if ((endDiff - len + 1 + lookRangeStart) == (diff + rangeStart))
-                        {
-                            ok = true;
-                            break;
-                        }
-                    }
-                    if (!ok)
-                        continue;
-                }
+                    
+                // is cell + size <= range end?
+                if( (diff + cell[ childCells - 1 ])
+                        > range[ childCells + addressCells - 1 ])
+                    continue;
+
                 offset += diff;
+                ok = true;
                 break;
             }
 
-            if (addressCells + sizeCells > sizeof(cell)/sizeof(cell[0]))
-                panic("IODTResolveAddressCell: Invalid device tree (%u, %u)", (uint32_t)addressCells, (uint32_t)sizeCells);
-
             // Get the physical start of the range from our parent
-            bcopy( range + childAddressCells, cell, sizeof(UInt32) * addressCells );
-            bzero( cell + addressCells, sizeof(UInt32) * sizeCells );
+            bcopy( range + childAddressCells, cell, 4 * addressCells );
+            bzero( cell + addressCells, 4 * sizeCells );
 
         } /* else zero length range => pass thru to parent */
 
-        if (regEntry != startEntry) regEntry->release();
-        regEntry		= parent;
-        childSizeCells		= sizeCells;
-        childAddressCells	= addressCells;
-        childCells		= childAddressCells + childSizeCells;
-    }
-    while( ok && regEntry);
+	regEntry		= parent;
+	childSizeCells		= sizeCells;
+	childAddressCells	= addressCells;
+	childCells		= childAddressCells + childSizeCells;
+
+    } while( ok && regEntry);
 
     return( ok);
 }
@@ -1217,45 +931,107 @@
     OSArray				*array;
     IODeviceMemory		*range;
 
-    array = 0;
-    do
-    {
-        parentEntry = regEntry->copyParentEntry( gIODTPlane );
-        addressProperty = (OSData *) regEntry->getProperty( addressPropertyName );
-        if( (0 == addressProperty) || (0 == parentEntry)) break;
-
-        IODTGetCellCounts( parentEntry, &sizeCells, &addressCells );
-        if( 0 == sizeCells) break;
-
-        cells = sizeCells + addressCells;
-        reg = (UInt32 *) addressProperty->getBytesNoCopy();
-        num = addressProperty->getLength() / (4 * cells);
-
-        array = OSArray::withCapacity( 1 );
-        if( 0 == array) break;
-
-        for( i = 0; i < num; i++) {
-            if( IODTResolveAddressCell( parentEntry, reg, &phys, &len )) {
-                range = 0;
-                if( parent)
-                    range = IODeviceMemory::withSubRange( parent,
-                            phys - parent->getPhysicalSegment(0, 0, kIOMemoryMapperNone), len );
-                if( 0 == range)
-                    range = IODeviceMemory::withRange( phys, len );
-                if( range)
-                    array->setObject( range );
-            }
-            reg += cells;
-        }
-
-        regEntry->setProperty( gIODeviceMemoryKey, array);
-        array->release();	/* ??? */
-    }
-    while (false);
-
-    OSSafeReleaseNULL(parentEntry);
-
-    return (array);
+    parentEntry = regEntry->getParentEntry( gIODTPlane );
+    addressProperty = (OSData *) regEntry->getProperty( addressPropertyName );
+    if( (0 == addressProperty) || (0 == parentEntry))
+        return( 0);
+
+    IODTGetCellCounts( parentEntry, &sizeCells, &addressCells );
+    if( 0 == sizeCells)
+        return( 0);
+
+    cells = sizeCells + addressCells;
+    reg = (UInt32 *) addressProperty->getBytesNoCopy();
+    num = addressProperty->getLength() / (4 * cells);
+
+    array = OSArray::withCapacity( 1 );
+    if( 0 == array)
+        return( 0);
+
+    for( i = 0; i < num; i++) {
+        if( IODTResolveAddressCell( parentEntry, reg, &phys, &len )) {
+            range = 0;
+            if( parent)
+                range = IODeviceMemory::withSubRange( parent,
+                        phys - parent->getPhysicalAddress(), len );
+            if( 0 == range)
+                range = IODeviceMemory::withRange( phys, len );
+            if( range)
+                array->setObject( range );
+        }
+        reg += cells;
+    }
+
+    regEntry->setProperty( gIODeviceMemoryKey, array);
+    array->release();	/* ??? */
+
+    return( array);
+}
+
+static void IODTGetNVLocation(
+	IORegistryEntry * parent,
+	IORegistryEntry * regEntry,
+	UInt8 * busNum, UInt8 * deviceNum, UInt8 * functionNum )
+{
+
+    OSData			*prop;
+    IODTPersistent	*persist;
+    UInt32			*cell;
+
+    prop = (OSData *) parent->getProperty( gIODTPersistKey );
+    if( prop) {
+        persist = (IODTPersistent *) prop->getBytesNoCopy();
+        (*persist->locationFunc)( regEntry, busNum, deviceNum, functionNum );
+    } else {
+        prop = (OSData *) regEntry->getProperty( "reg" );
+        *functionNum	= 0;
+        if( prop) {
+            cell = (UInt32 *) prop->getBytesNoCopy();
+            *busNum 	= 3;
+            *deviceNum 	= 0x1f & (cell[ 0 ] >> 24);
+        } else {
+            *busNum 	= 0;
+            *deviceNum 	= 0;
+        }
+    }
+    return;
+}
+
+/*
+ * Try to make the same messed up descriptor as Mac OS
+ */
+
+IOReturn IODTMakeNVDescriptor( IORegistryEntry * regEntry,
+				IONVRAMDescriptor * hdr )
+{
+    IORegistryEntry		*parent;
+    UInt32				level;
+    UInt32				bridgeDevices;
+    UInt8				busNum;
+    UInt8				deviceNum;
+    UInt8				functionNum;
+
+    hdr->format 	= 1;
+    hdr->marker 	= 0;
+
+    for(level = 0, bridgeDevices = 0; 
+    	(parent = regEntry->getParentEntry( gIODTPlane )) && (level < 7); level++ ) {
+
+        IODTGetNVLocation( parent, regEntry,
+			&busNum, &deviceNum, &functionNum );
+        if( level)
+            bridgeDevices |= ((deviceNum & 0x1f) << ((level - 1) * 5));
+        else {
+            hdr->busNum 	= busNum;
+            hdr->deviceNum 	= deviceNum;
+            hdr->functionNum 	= functionNum;
+        }
+        regEntry = parent;
+    }
+    hdr->bridgeCount 	= level - 2;
+    hdr->bridgeDevices 	= bridgeDevices;
+
+    return( kIOReturnSuccess );
 }
 
 OSData * IODTFindSlotName( IORegistryEntry * regEntry, UInt32 deviceNumber )
@@ -1265,54 +1041,44 @@
     OSData				*ret = 0;
     UInt32				*bits;
     UInt32				i;
-    size_t              nlen;
     char				*names;
     char				*lastName;
     UInt32				mask;
 
     data = (OSData *) regEntry->getProperty("AAPL,slot-name");
-    if (data) return (data);
-
-    do
-    {
-        parent = regEntry->copyParentEntry( gIODTPlane );
-        if (!parent) break;
-
-        data = OSDynamicCast( OSData, parent->getProperty("slot-names"));
-        if (!data) break;
-        if (data->getLength() <= 4) break;
-
-        bits = (UInt32 *) data->getBytesNoCopy();
-        mask = *bits;
-        if ((0 == (mask & (1 << deviceNumber)))) break;
-
-        names = (char *)(bits + 1);
-        lastName = names + (data->getLength() - 4);
-
-        for( i = 0; (i <= deviceNumber) && (names < lastName); i++ ) {
-
-            if( mask & (1 << i)) {
-                nlen = 1 + strnlen(names, lastName - names);
-                if( i == deviceNumber) {
-                    data = OSData::withBytesNoCopy(names, nlen);
-                    if( data) {
-                        regEntry->setProperty("AAPL,slot-name", data);
-                        ret = data;
-                        data->release();
-                    }
-                } else
-                    names += nlen;
-            }
-        }
-    }
-    while (false);
-
-    OSSafeReleaseNULL(parent);
+    if( data)
+        return( data);
+    parent = regEntry->getParentEntry( gIODTPlane );
+    if( !parent)
+        return( 0 );
+    data = OSDynamicCast( OSData, parent->getProperty("slot-names"));
+    if( !data)
+        return( 0 );
+    if( data->getLength() <= 4)
+        return( 0 );
+
+    bits = (UInt32 *) data->getBytesNoCopy();
+    mask = *bits;
+    if( (0 == (mask & (1 << deviceNumber))))
+        return( 0 );
+
+    names = (char *)(bits + 1);
+    lastName = names + (data->getLength() - 4);
+
+    for( i = 0; (i <= deviceNumber) && (names < lastName); i++ ) {
+
+        if( mask & (1 << i)) {
+            if( i == deviceNumber) {
+                data = OSData::withBytesNoCopy( names, 1 + strlen( names));
+                if( data) {
+                    regEntry->setProperty("AAPL,slot-name", data);
+                    ret = data;
+                    data->release();
+                }
+            } else
+                names += 1 + strlen( names);
+        }
+    }
 
     return( ret );
 }
-
-extern "C" IOReturn IONDRVLibrariesInitialize( IOService * provider )
-{
-    return( kIOReturnUnsupported );
-}