PCIIDE_CHANSTATUS_EN 5010 dev/pci/pciide.c 	interface &= ~PCIIDE_CHANSTATUS_EN;	/* Reserved on PC87415 */
PCIIDE_CHANSTATUS_EN 5363 dev/pci/pciide.c 	cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT);