]> git.saurik.com Git - apple/xnu.git/blobdiff - iokit/Kernel/IODeviceTreeSupport.cpp
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[apple/xnu.git] / iokit / Kernel / IODeviceTreeSupport.cpp
index 47edbf57b85028bf0868a348367743ceb82e4026..4ee53e5668203b8e239fc9334f82a16324d215cd 100644 (file)
@@ -1,31 +1,29 @@
 /*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the 
- * License may not be used to create, or enable the creation or 
- * redistribution of, unlawful or unlicensed copies of an Apple operating 
- * system, or to circumvent, violate, or enable the circumvention or 
- * violation of, any terms of an Apple operating system software license 
- * agreement.
- *
- * Please obtain a copy of the License at 
- * http://www.opensource.apple.com/apsl/ and read it before using this 
- * file.
- *
- * The Original Code and all software distributed under the License are 
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
  * limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #include <IOKit/IODeviceTreeSupport.h>
 
 #include <pexpert/device_tree.h>
 
+#include <machine/machine_routines.h>
+
 extern "C" {
-    #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 );
+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 <IOKit/assert.h>
@@ -93,10 +93,9 @@ IODeviceTreeAlloc( void * dtTop )
     DTEntry                    mapEntry;
     OSArray *                  stack;
     OSData *                   prop;
-    OSObject *                 obj;
     OSDictionary *             allInts;
     vm_offset_t *              dtMap;
-    int                                propSize;
+    unsigned int               propSize;
     bool                       intMap;
     bool                       freeDT;
 
@@ -146,7 +145,7 @@ IODeviceTreeAlloc( void * dtTop )
     freeDT = (kSuccess == DTLookupEntry( 0, "/chosen/memory-map", &mapEntry ))
          && (kSuccess == DTGetProperty( mapEntry,
                 "DeviceTree", (void **) &dtMap, &propSize ))
-         && ((2 * sizeof( vm_offset_t)) == propSize);
+         && ((2 * sizeof(uint32_t)) == propSize);
 
     parent = MakeReferenceTable( (DTEntry)dtTop, freeDT );
 
@@ -195,7 +194,7 @@ IODeviceTreeAlloc( void * dtTop )
         // free original device tree
         DTInit(0);
         IODTFreeLoaderInfo( "DeviceTree",
-                       (void *)dtMap[0], round_page_32(dtMap[1]) );
+                           (void *)dtMap[0], (int) round_page(dtMap[1]) );
     }
 
     // adjust tree
@@ -212,22 +211,6 @@ IODeviceTreeAlloc( void * dtTop )
             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();
     }
@@ -264,7 +247,7 @@ IODeviceTreeAlloc( void * dtTop )
     return( parent);
 }
 
-int IODTGetLoaderInfo( char *key, void **infoAddr, int *infoSize )
+int IODTGetLoaderInfo( const char *key, void **infoAddr, int *infoSize )
 {
     IORegistryEntry            *chosen;
     OSData                             *propObj;
@@ -289,7 +272,7 @@ int IODTGetLoaderInfo( char *key, void **infoAddr, int *infoSize )
     return 0;
 }
 
-void IODTFreeLoaderInfo( char *key, void *infoAddr, int infoSize )
+void IODTFreeLoaderInfo( const char *key, void *infoAddr, int infoSize )
 {
     vm_offset_t                        range[2];
     IORegistryEntry            *chosen;
@@ -306,6 +289,26 @@ void IODTFreeLoaderInfo( char *key, void *infoAddr, int infoSize )
     }
 }
 
+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 )
 {
     vm_offset_t        virt;
@@ -326,7 +329,7 @@ MakeReferenceTable( DTEntry dtEntry, bool copy )
     const OSSymbol             *sym;
     DTPropertyIterator dtIter;
     void                               *prop;
-    int                                        propSize;
+    unsigned int               propSize;
     char                               *name;
     char                               location[ 32 ];
     bool                               noLocation = true;
@@ -371,17 +374,17 @@ MakeReferenceTable( DTEntry dtEntry, bool copy )
 
             } 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 && (0 == strcmp( name, "reg"))) {
+            } else if(noLocation && (!strncmp(name, "reg", sizeof("reg")))) {
                 // default location - override later
-                sprintf( location, "%lX", *((UInt32 *) prop) );
+                snprintf(location, sizeof(location), "%X", *((uint32_t *) prop));
                 regEntry->setLocation( location );
             }
         }
@@ -433,15 +436,21 @@ static bool GetUInt32( IORegistryEntry * regEntry, const OSSymbol * name,
         return( false );
 }
 
-IORegistryEntry * IODTFindInterruptParent( IORegistryEntry * regEntry )
+static IORegistryEntry * IODTFindInterruptParent( IORegistryEntry * regEntry, IOItemCount index )
 {
     IORegistryEntry *  parent;
     UInt32             phandle;
+    OSData         *   data;
+    unsigned int       len;
 
-    if( GetUInt32( regEntry, gIODTInterruptParentKey, &phandle))
-        parent = FindPHandle( phandle );
+    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"))
+    else if( 0 == regEntry->getProperty( "interrupt-controller"))
         parent = regEntry->getParentEntry( gIODTPlane);
     else
         parent = 0;
@@ -460,7 +469,7 @@ const OSSymbol * IODTInterruptControllerName( IORegistryEntry * regEntry )
     assert( ok );
 
     if( ok) {
-        sprintf( buf, "IOInterruptController%08lX", phandle);
+        snprintf(buf, sizeof(buf), "IOInterruptController%08X", (uint32_t)phandle);
         sym = OSSymbol::withCString( buf );
     } else
         sym = 0;
@@ -479,8 +488,8 @@ static void IODTGetICellCounts( IORegistryEntry * regEntry,
         *aCellCount = 0;
 }
 
-UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec,
-                               OSData ** spec, const OSSymbol ** controller )
+static UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec, UInt32 index,
+                                   OSData ** spec, const OSSymbol ** controller )
 {
     IORegistryEntry *parent = 0;
     OSData                     *data;
@@ -492,12 +501,12 @@ UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec,
     UInt32                     i, original_icells;
     bool                       cmp, ok = false;
 
-    parent = IODTFindInterruptParent( regEntry );    
+    parent = IODTFindInterruptParent( regEntry, index );    
     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;
@@ -518,7 +527,7 @@ UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec,
             // 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,
@@ -527,7 +536,7 @@ UInt32 IODTMapOneInterrupt( IORegistryEntry * regEntry, UInt32 * intSpec,
             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;
@@ -638,11 +647,12 @@ static bool IODTMapInterruptsSharing( IORegistryEntry * regEntry, OSDictionary *
     OSData *           local2;
     UInt32 *           localBits;
     UInt32 *           localEnd;
+    IOItemCount                index;
     OSData *           map;
     OSObject *         oneMap;
     OSArray *          mapped;
     OSArray *          controllerInts;
-    const OSSymbol *   controller;
+    const OSSymbol *   controller = 0;
     OSArray *          controllers;
     UInt32             skip = 1;
     bool               ok, nw;
@@ -663,7 +673,8 @@ static bool IODTMapInterruptsSharing( IORegistryEntry * regEntry, OSDictionary *
     }
 
     localBits = (UInt32 *) local->getBytesNoCopy();
-    localEnd = localBits + (local->getLength() / sizeof( UInt32));
+    localEnd = localBits + (local->getLength() / sizeof(UInt32));
+    index = 0;
     mapped = OSArray::withCapacity( 1 );
     controllers = OSArray::withCapacity( 1 );
 
@@ -671,19 +682,20 @@ static bool IODTMapInterruptsSharing( IORegistryEntry * regEntry, OSDictionary *
 
     if( ok) do {
         if( nw) {
-            skip = IODTMapOneInterrupt( regEntry, localBits, &map, &controller );
+            skip = IODTMapOneInterrupt( regEntry, localBits, index, &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 );
@@ -834,7 +846,7 @@ bool IODTMatchNubWithKeys( IORegistryEntry * regEntry,
         result = regEntry->compareNames( obj );
                obj->release();
     }
-#ifdef DEBUG
+#if DEBUG
     else IOLog("Couldn't unserialize %s\n", keys );
 #endif
 
@@ -905,10 +917,11 @@ void IODTSetResolving( IORegistryEntry *  regEntry,
 
     persist.compareFunc = compareFunc;
     persist.locationFunc = locationFunc;
-    prop = OSData::withBytes( &persist, sizeof( persist));
+    prop = OSData::withBytes( &persist, sizeof(persist));
     if( !prop)
         return;
 
+    prop->setSerializable(false);
     regEntry->setProperty( gIODTPersistKey, prop);
     prop->release();
     return;
@@ -916,8 +929,8 @@ void IODTSetResolving( IORegistryEntry *    regEntry,
 
 static SInt32 DefaultCompare( UInt32 cellCount, UInt32 left[], UInt32 right[] )
 {
-    cellCount--;
-    return( left[ cellCount ] - right[ cellCount ] );
+       cellCount--;
+       return( left[ cellCount ] - right[ cellCount ] ); 
 }
 
 void IODTGetCellCounts( IORegistryEntry * regEntry,
@@ -947,14 +960,15 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
     // cells in addresses below regEntry
     UInt32             childSizeCells, childAddressCells;
     UInt32             childCells;
-    UInt32             cell[ 5 ], offset = 0, length;
-    UInt32             endCell[ 5 ];
+    UInt32             cell[ 8 ], length;
+    UInt64             offset = 0;
+    UInt32             endCell[ 8 ];
     UInt32             *range;
     UInt32             *lookRange;
     UInt32             *startRange;
     UInt32             *endRanges;
     bool               ok = true;
-    SInt32             diff, endDiff;
+    SInt64             diff, diff2, endDiff;
 
     IODTPersistent     *persist;
     IODTCompareAddressCellFunc compare;
@@ -962,10 +976,13 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
     IODTGetCellCounts( regEntry, &childSizeCells, &childAddressCells );
     childCells = childAddressCells + childSizeCells;
 
-    bcopy( cellsIn, cell, 4 * childCells );
+    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 );
     if( childSizeCells > 1)
-        *len = IOPhysical32( cellsIn[ childAddressCells ],
-                             cellsIn[ childAddressCells + 1 ] );
+        *len = IOPhysical32( cellsIn[ childAddressCells + 1],
+                             cellsIn[ childAddressCells] );
     else
         *len = IOPhysical32( 0, cellsIn[ childAddressCells ] );
 
@@ -973,8 +990,13 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
     {
        prop = OSDynamicCast( OSData, regEntry->getProperty( gIODTRangeKey ));
        if( 0 == prop) {
-           /* end of the road */
-           *phys = IOPhysical32( 0,  cell[ childAddressCells - 1 ] + offset);
+            /* end of the road */
+           if (childAddressCells == 2)  {
+                *phys = IOPhysical32( cell[ childAddressCells - 1 ], cell [ childAddressCells - 2 ]);
+           } else  {
+               *phys = IOPhysical32( 0, cell[ childAddressCells - 1 ]);
+           }
+            *phys += offset;
            break;
        }
 
@@ -985,22 +1007,43 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
            // search
            startRange = (UInt32 *) prop->getBytesNoCopy();
            range = startRange;
-           endRanges = range + (length / 4);
+           endRanges = range + (length / sizeof(UInt32));
 
            prop = (OSData *) regEntry->getProperty( gIODTPersistKey );
            if( prop) {
                persist = (IODTPersistent *) prop->getBytesNoCopy();
                compare = persist->compareFunc;
-           } else
+           } else if (addressCells == childAddressCells) {
                compare = DefaultCompare;
+           } else {
+               panic("There is no mixed comparison function yet...");
+           }
 
            for( ok = false;
                 range < endRanges;
                 range += (childCells + addressCells) ) {
 
-               // is cell start >= range start?
+               // is cell start within range?
                diff = (*compare)( childAddressCells, cell, range );
-               if( diff < 0)
+
+        if (childAddressCells > sizeof(endCell)/sizeof(endCell[0]))
+            panic("IODTResolveAddressCell: Invalid device tree (%u)", (uint32_t)childAddressCells);
+
+               bcopy(range, endCell, childAddressCells * sizeof(UInt32));
+
+               if (childAddressCells == 2) {
+                       uint64_t sum = endCell[childAddressCells - 2] + IOPhysical32(range[childCells + addressCells - 1], range[childCells + addressCells - 2]);
+                       endCell[childAddressCells - 2] = (uint32_t)(sum & 0x00000000FFFFFFFFULL);
+                       if (sum > UINT32_MAX) {
+                               endCell[childAddressCells - 1] += (uint32_t)((sum & 0xFFFFFFFF00000000ULL) >> 32);
+                       }
+               } else {
+                       endCell[childAddressCells - 1] += range[childCells + addressCells - 1];
+               }
+
+               diff2 = (*compare)( childAddressCells, cell, endCell );
+
+               if ((diff < 0) || (diff2 >= 0))
                    continue;
 
                ok = (0 == cell[childCells - 1]);
@@ -1008,7 +1051,17 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
                {
                    // search for cell end
                    bcopy(cell, endCell, childAddressCells * sizeof(UInt32));
-                   endCell[childAddressCells - 1] += cell[childCells - 1] - 1;
+
+                   if (childSizeCells == 2) {
+                       uint64_t sum;
+                        sum = endCell[childAddressCells - 2] + IOPhysical32(cell[childCells - 1], cell[childCells - 2]) - 1;
+                       endCell[childAddressCells - 2] = (uint32_t)(sum & 0x00000000FFFFFFFFULL);
+                       if (sum > UINT32_MAX) {
+                               endCell[childAddressCells - 1] += (uint32_t)((sum & 0xFFFFFFFF00000000ULL) >> 32);
+                       }
+                   } else {
+                        endCell[childAddressCells - 1] += cell[childCells - 1] - 1;
+                   }
                    lookRange = startRange;
                    for( ;
                         lookRange < endRanges;
@@ -1032,9 +1085,12 @@ bool IODTResolveAddressCell( IORegistryEntry * regEntry,
                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, 4 * addressCells );
-           bzero( cell + addressCells, 4 * sizeCells );
+           bcopy( range + childAddressCells, cell, sizeof(UInt32) * addressCells );
+           bzero( cell + addressCells, sizeof(UInt32) * sizeCells );
 
        } /* else zero length range => pass thru to parent */
 
@@ -1085,7 +1141,7 @@ OSArray * IODTResolveAddressing( IORegistryEntry * regEntry,
             range = 0;
             if( parent)
                 range = IODeviceMemory::withSubRange( parent,
-                        phys - parent->getPhysicalAddress(), len );
+                        phys - parent->getPhysicalSegment(0, 0, kIOMemoryMapperNone), len );
             if( 0 == range)
                 range = IODeviceMemory::withRange( phys, len );
             if( range)