IORegistryEntry *
IODeviceTreeAlloc( void * dtTop )
{
IORegistryEntry * parent;
IORegistryEntry * child;
IORegistryIterator * regIter;
DTEntryIterator iter;
DTEntry dtChild;
DTEntry mapEntry;
OSArray * stack;
OSData * prop;
OSDictionary * allInts;
vm_offset_t * dtMap;
unsigned int propSize;
bool intMap;
bool freeDT;
gIODTPlane = IORegistryEntry::makePlane( kIODeviceTreePlane );
gIODTNameKey = OSSymbol::withCStringNoCopy( "name" );
gIODTUnitKey = OSSymbol::withCStringNoCopy( "AAPL,unit-string" );
gIODTCompatibleKey = OSSymbol::withCStringNoCopy( "compatible" );
gIODTTypeKey = OSSymbol::withCStringNoCopy( "device_type" );
gIODTModelKey = OSSymbol::withCStringNoCopy( "model" );
gIODTSizeCellKey = OSSymbol::withCStringNoCopy( "#size-cells" );
gIODTAddressCellKey = OSSymbol::withCStringNoCopy( "#address-cells" );
gIODTRangeKey = OSSymbol::withCStringNoCopy( "ranges" );
gIODTPersistKey = OSSymbol::withCStringNoCopy( "IODTPersist" );
assert( gIODTPlane && gIODTCompatibleKey
&& gIODTTypeKey && gIODTModelKey
&& gIODTSizeCellKey && gIODTAddressCellKey && gIODTRangeKey
&& gIODTPersistKey );
gIODTDefaultInterruptController
= OSSymbol::withCStringNoCopy("IOPrimaryInterruptController");
gIODTNWInterruptMappingKey
= OSSymbol::withCStringNoCopy("IONWInterrupts");
gIODTAAPLInterruptsKey
= OSSymbol::withCStringNoCopy("AAPL,interrupts");
gIODTPHandleKey
= OSSymbol::withCStringNoCopy("AAPL,phandle");
gIODTInterruptParentKey
= OSSymbol::withCStringNoCopy("interrupt-parent");
gIODTPHandles = OSArray::withCapacity( 1 );
gIODTPHandleMap = OSArray::withCapacity( 1 );
gIODTInterruptCellKey
= OSSymbol::withCStringNoCopy("#interrupt-cells");
assert( gIODTDefaultInterruptController && gIODTNWInterruptMappingKey
&& gIODTAAPLInterruptsKey
&& gIODTPHandleKey && gIODTInterruptParentKey
&& gIODTPHandles && gIODTPHandleMap
&& gIODTInterruptCellKey
);
freeDT = (kSuccess == DTLookupEntry( 0, "/chosen/memory-map", &mapEntry ))
&& (kSuccess == DTGetProperty( mapEntry,
"DeviceTree", (void **) &dtMap, &propSize ))
&& ((2 * sizeof(uint32_t)) == propSize);
parent = MakeReferenceTable( (DTEntry)dtTop, freeDT );
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) ) {
child = MakeReferenceTable( dtChild, freeDT );
child->attachToParent( parent, gIODTPlane);
AddPHandle( child );
if( kSuccess == DTEnterEntry( iter, dtChild)) {
stack->setObject( parent);
parent = child;
}
// only registry holds retain
child->release();
}
} while( stack->getCount()
&& (kSuccess == DTExitEntry( iter, &dtChild)));
stack->release();
DTDisposeEntryIterator( iter);
// parent is now root of the created tree
// make root name first compatible entry (purely cosmetic)
if( (prop = (OSData *) parent->getProperty( gIODTCompatibleKey))) {
parent->setName( parent->getName(), gIODTPlane );
parent->setName( (const char *) prop->getBytesNoCopy() );
}
// attach tree to meta root
parent->attachToParent( IORegistryEntry::getRegistryRoot(), gIODTPlane);
parent->release();
if( freeDT ) {
// free original device tree
DTInit(0);
IODTFreeLoaderInfo( "DeviceTree",
(void *)dtMap[0], (int) 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 ) {
while( (child = regIter->getNextObject())) {
IODTMapInterruptsSharing( child, allInts );
if( !intMap && child->getProperty( gIODTInterruptParentKey))
intMap = true;
}
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 );
return( parent);
}
static void createNubs(IOService *provider) {
const char nameID[2][8] = {"@0,name", "@1,name"};
const char name[11] = "Aty,Radeon";
const char typeID[2][15] = {"@0,device_type", "@1,device_type"};
const char type[] = "display";
OSObject *tempObj;
int i;
if (provider->getProperty(kIONDRVIgnoreKey)) return;
provider->setProperty(kIONDRVIgnoreKey, kOSBooleanTrue); //prevent IONDRVFramebuffer from match
LOG("createNubs\n");
if (!provider->getProperty("@0,name") && !provider->getProperty("@1,name")) {
for (i = 0;i < 2;i++) { // Debug
tempObj = OSData::withBytes(name, 11);
provider->setProperty(nameID[i], tempObj);
tempObj->release();
tempObj = OSData::withBytes(type, 8);
provider->setProperty(typeID[i], tempObj);
tempObj->release();
}
}
// have to move below part from IONDRVFramebuffer to make it work
IORegistryIterator * iter;
IORegistryEntry * next;
IOService * newNub;
OSArray * toDo = 0;
bool firstLevel;
OSData * data;
if (provider->getProperty("@0,name"))
{
OSDictionary * dict;
OSCollectionIterator * keys;
const OSSymbol * key;
char buffer[80];
const char * keyChrs;
size_t len;
char c;
dict = provider->dictionaryWithProperties();
keys = OSCollectionIterator::withCollection(dict);
if (dict)
dict->release();
if (keys)
{
while ((key = OSDynamicCast(OSSymbol, keys->getNextObject())))
{
keyChrs = key->getCStringNoCopy();
if ('@' != keyChrs[0])
continue;
len = 0;
do
{
c = keyChrs[len];
if (!c || (c == ','))
break;
buffer[len] = c;
len++;
}
while (len < (sizeof(buffer) - 1));
if (!c)
continue;
buffer[len] = 0;
keyChrs += len + 1;
next = provider->childFromPath(buffer, gIODTPlane);
if (!next)
{
next = new IOService;
if (next && !next->init())
{
next->release();
next = 0;
}
if (!next)
continue;
next->setLocation(&buffer[1]);
if (!next->attachToParent(provider, gIODTPlane))
continue;
}
OSObject * obj = dict->getObject(key);
next->setProperty(keyChrs, dict->getObject(key));
if (!strcmp(keyChrs, "name"))
{
OSData * data = OSDynamicCast(OSData, obj);
if (data)
next->setName((const char *) data->getBytesNoCopy());
}
next->release();
provider->removeProperty(key);
}
keys->release();
}
}
iter = IORegistryIterator::iterateOver( provider, gIODTPlane, 0 );
toDo = OSArray::withCapacity(2);
if (iter && toDo)
{
bool haveDoneLibInit = false;
UInt32 index = 0;
do
{
while ((next = (IORegistryEntry *) iter->getNextObject()))
{
firstLevel = (provider == next->getParentEntry(gIODTPlane));
if (firstLevel)
{
data = OSDynamicCast( OSData, next->getProperty("device_type"));
if (!data || (0 != strcmp("display", (char *) data->getBytesNoCopy())))
continue;
if (!haveDoneLibInit)
{
haveDoneLibInit = (kIOReturnSuccess == _IONDRVLibrariesInitialize(provider));
if (!haveDoneLibInit)
continue;
}
next->setProperty( kIOFBDependentIDKey, (uintptr_t) provider, 64 );
next->setProperty( kIOFBDependentIndexKey, index, 32 );
next->setProperty( kIONDRVIgnoreKey, kOSBooleanTrue );
index++;
}
toDo->setObject( next );
iter->enterEntry();
}
}
while (iter->exitEntry());
}
if (iter)
iter->release();
if (toDo)
{
OSObject * obj;
OSArray * deviceMemory;
obj = provider->copyProperty(gIODeviceMemoryKey);
deviceMemory = OSDynamicCast(OSArray, obj);
for (unsigned int i = 0;
(next = (IORegistryEntry *) toDo->getObject(i));
i++)
{
newNub = new IONDRVDevice;
if (!newNub)
continue;
if (!newNub->init(next, gIODTPlane))
{
newNub->free();
newNub = 0;
continue;
}
if (deviceMemory)
newNub->setDeviceMemory(deviceMemory);
newNub->attach(provider);
newNub->registerService(kIOServiceSynchronous);
}
if (obj)
obj->release();
toDo->release();
}
}