UHCI_STS
status = UREAD2(sc, UHCI_STS);
UWRITE2(sc, UHCI_STS, ack); /* acknowledge the ints */
if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
running = !(UREAD2(sc, UHCI_STS) & UHCI_STS_HCH);
UREAD2(sc, UHCI_CMD), UREAD2(sc, UHCI_STS)));
#define UHCISTS(sc) UREAD2(sc, UHCI_STS)
UREAD2(sc, UHCI_STS),