PCI_primary_bus
dev->device, dev->function, PCI_primary_bus, 1);
ReadConfig(domain, bus, dev, function, PCI_primary_bus, 1),
WriteConfig(domain, bus, dev, function, PCI_primary_bus, 1, 0);
ReadConfig(domain, bus, dev, function, PCI_primary_bus, 1),
WriteConfig(domain, bus, dev, function, PCI_primary_bus, 1, bus);
ReadConfig(domain, bus, dev, function, PCI_primary_bus, 1),
ReadConfig(domain, bus, dev, function, PCI_primary_bus, 1),