cpc_attach
cpc_attach(device_t self, pci_chipset_tag_t pc, bus_space_tag_t mem,
cpc_attach(self, genppc_pct, &pmppc_mem_tag, &pmppc_pci_io_tag,
cpc_attach(device_t self, pci_chipset_tag_t pc, bus_space_tag_t mem,