//================================================================================================
//
// CheckSleepCapability
//
//================================================================================================
//
void
AppleUSBUHCI::CheckSleepCapability(void)
{
if (_device->getProperty("built-in") && (_ERRATA64BITS & kErrataICH6PowerSequencing))
{
// The ICH6 UHCI drivers on a Transition system just magically work on sleep/wake
// so we will just hard code those. Other systems will have to be evaluated later
setProperty("Card Type","Built-in");
_controllerCanSleep = true;
}
else
{
// This appears to be necessary
setProperty("Card Type","PCI");
_controllerCanSleep = false;
}
// if we have an ExpressCard attached (non-zero port), then we need to register for some special messages to allow us to override the Resume Enables
// for that port (some cards disconnect when the ExpressCard power goes away and we would like to ignore these extra detach events.
if ((_ExpressCardPort = ExpressCardPort(_device)))
{
_device->callPlatformFunction(
/* function */ "RegisterDebugDriver",
/* waitForFunction */ false,
/* provider nubÊ Ê */ _device,
/* unused Ê */ (void *) this,
/* unused Ê */ (void *) NULL,
/* unused Ê */ (void *) NULL );
}
_badExpressCardAttached = false;
// Call registerService() so that the IOUSBController object is published and clients (like Prober) can find it
registerService();
}
//================================================================================================
//
// CheckSleepCapability
//
//================================================================================================
//
void
AppleUSBOHCI::CheckSleepCapability(void)
{
// assume that sleep is OK
_controllerCanSleep = true;
_hasPCIPwrMgmt = false;
// We need to determine which OHCI controllers don't survive sleep. These fall into 2 categories:
//
// 1. CardBus cards
// 2. PCI Cards that lose power (right now because of a bug in the PCI Family, USB PCI cards do not prevent
// sleep, so even cards that don't support the PCI Power Mgmt stuff get their power removed.
//
// Additionally, the PowerBook 101 controller cannot survive across sleep (I doesn't support remote wakeup).
//
// So here, we look at all those cases and set the _unloadUIMAcrossSleep boolean to true. As it turns out,
// if a controller does not have the "AAPL,clock-id" property, then it means that it cannot survive sleep. We
// might need to refine this later once we figure how to deal with PCI cards that can go into PCI sleep mode.
// An exception is the B&W G3, that does not have this property but can sleep. Sigh...
// Now, look at PCI cards. Note that the onboard controller's provider is an IOPCIDevice so we cannot use that
// to distinguish between USB PCI cards and the on board controller. Instead, we use the existence of the
// "AAPL,clock-id" property in the provider. If it does not exist, then we are a OHCI controller on a USB PCI card.
//
if ( !_device->getProperty("AAPL,clock-id") && !((getPlatform()->getChipSetType() == kChipSetTypeGossamer) && getPlatform()->getMachineType() == kGossamerTypeYosemite) )
{
if (_device->getProperty("built-in"))
{
if (_errataBits & kErrataNECIncompleteWrite)
{
FixupNECControllerConfigRegisters();
}
// rdar://5769508 - if we are on a built in PCI device, then assume the system supports D3cold
if (_device->hasPCIPowerManagement(kPCIPMCPMESupportFromD3Cold) && (_device->enablePCIPowerManagement(kPCIPMCSPowerStateD3) == kIOReturnSuccess))
{
_hasPCIPwrMgmt = true;
setProperty("Card Type","Built-in");
}
}
else
{
// rdar://5856545 - on older machines without the built-in property, we need to use the "default" case in the IOPCIDevice code
if (_device->hasPCIPowerManagement() && (_device->enablePCIPowerManagement() == kIOReturnSuccess))
{
_hasPCIPwrMgmt = true;
setProperty("Card Type","Built-in");
}
}
if (!_hasPCIPwrMgmt)
{
USBError(1, "AppleUSBOHCI[%p]::CheckSleepCapability - controller will be unloaded across sleep",this);
_controllerCanSleep = false;
setProperty("Card Type","PCI");
}
}
else
{
setProperty("Card Type","Built-in");
}
// if we have an ExpressCard attached (non-zero port), then we will need to disable port resume
// for that port (some cards disconnect when the ExpressCard power goes away and we would like to ignore these extra detach events.
_ExpressCardPort = ExpressCardPort(_device);
_badExpressCardAttached = false;
// Call registerService() so that the IOUSBController object is published and clients (like Prober) can find it
registerService();
}
