busno             188 arch/i386/pci/pci_machdep.c pci_bus_maxdevs(pci_chipset_tag_t pc, int busno)
busno            1748 dev/pci/pccbb.c pccbb_make_tag(cc, busno, devno, function)
busno            1750 dev/pci/pccbb.c 	int busno, devno, function;
busno            1754 dev/pci/pccbb.c 	return pci_make_tag(sc->sc_pc, busno, devno, function);