extern struct pci_controller* pci_alloc_pci_controller(enum phb_types controller_type);
extern struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node);
extern struct pci_controller* pci_alloc_pci_controller(enum phb_types controller_type);
extern struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node);