bool AppleIntelPIIXATARoot::start( IOService * provider )
{
if ( super::start(provider) != true )
return false;
// Allocate a mutex to serialize access to PCI config space.
_pciConfigLock = IOLockAlloc();
if ( _pciConfigLock == 0 )
return false;
_provider = OSDynamicCast( IOPCIDevice, provider );
if ( _provider == 0 )
return false;
_provider->retain();
_nubs = createATAChannelNubs();
if ( _nubs == 0 )
return false;
_openNubs = OSSet::withCapacity( _nubs->getCount() );
if ( _openNubs == 0 )
return false;
// Register channel nubs.
applyToClients( registerClientApplier, 0 );
return true;
}
bool AppleNForceATARoot::start( IOService * provider )
{
OSDictionary * match;
if (super::start(provider) != true)
return false;
fProvider = OSDynamicCast( IOPCIDevice, provider );
if (fProvider == 0)
return false;
fProvider->retain();
// Enable bus master.
fProvider->setBusMasterEnable( true );
// Allocate a mutex to serialize access to PCI config space between
// the primary and secondary ATA channels.
fPCILock = IOLockAlloc();
if (fPCILock == 0)
return false;
fIsSATA = (getProperty(kSerialATAKey) == kOSBooleanTrue);
fChannels = createATAChannels();
if (fChannels == 0)
return false;
fOpenChannels = OSSet::withCapacity( fChannels->getCount() );
if (fOpenChannels == 0)
return false;
if (fIsSATA)
{
// Register SATA channels without delay.
fHardwareType = PCI_HW_SATA;
fHardwareFlags = 0;
applyToClients( registerClientApplier, 0 );
}
else if ((match = OSDynamicCast(OSDictionary,
getProperty(kISABridgeMatchingKey))))
{
match->retain(); // remove notification will consume a reference
// Provider's PCI device ID does not tell us the hardware features
// of the ATA controller. We need to locate the PCI-ISA bridge and
// lookup a table before registering the channel nub(s). If bridge
// is absent, we're in trouble.
fISABridgeNotifier = addNotification(
/* type */ gIOFirstPublishNotification,
/* match */ match,
/* handler */ isaBridgePublished,
/* target */ this,
/* refcon */ 0 );
if (fISABridgeNotifier == 0)
{
match->release();
return false;
}
}
else
{
return false;
}
return true;
}
