Method probe

USBToolBox/USBToolBox.cpp:368–409

}

IOService* USBToolBox::probe(IOService* provider, SInt32* score) {
    DEBUGLOG("%s: probe start", provider->getName());
    
    if (OSDynamicCast(IOPCIDevice, provider)) {
        // We are attached to the PCI device
        this->pciDevice = provider;
    } else if (checkClassHierarchy(provider, "AppleUSBHostController")) {
        // We are already attached to the instance
        this->controllerInstance = provider;
        this->controllerInstance->retain();
        this->pciDevice = this->controllerInstance->getParentEntry(gIOServicePlane); // Should not be released by the caller.
        if (!(this->pciDevice)) {
            DEBUGLOG("%s: No parent PCI device!", provider->getName());
            return NULL;
        }
    } else {
        DEBUGLOG("%s: Unknown provider class %s!", provider->getName(), provider->getMetaClass()->getClassName());
        return NULL;
    }
    
    if (checkKernelArgument(bootargOff) || checkProperty(propertyOff)) {
        SYSTEMLOGPROV("disable argument specified, exiting");
        return NULL;
    }
    
    this->pciDevice->setProperty("UTB Version", versionString);
    
    removeACPIPorts();
    
    if (!(this->controllerInstance)) {
        this->controllerInstance = getControllerViaMatching();
    }
    if (!(this->controllerInstance)) {
        SYSTEMLOGPROV("Failed to obtain via matching in probe, will try during start");
    } else {
        mergeProperties();
        DEBUGLOGPROV("Probe early finish");
        return NULL;
    }
    DEBUGLOGPROV("Probe end");
    return super::probe(provider, score);
}

bool USBToolBox::matchingCallback(OSDictionary* matchingDict, IOService* newService, IONotifier* notifier) {
    DEBUGLOGPROV("controller callback start");