unsigned min_devfn, unsigned max_devfn, unsigned int max));
unsigned int pci_scan_bridge(device_t bus, unsigned int max);
unsigned int pci_scan_bus(struct bus *bus, unsigned min_devfn, unsigned max_devfn, unsigned int max);
unsigned min_devfn, unsigned max_devfn, unsigned int max));
unsigned int pci_scan_bridge(device_t bus, unsigned int max);
unsigned int pci_scan_bus(struct bus *bus, unsigned min_devfn, unsigned max_devfn, unsigned int max);