/* Initialize the queue head for interrupt transfer, that is, initialize the following three fields: */
VOID EhcInitIntQh(IN USB_ENDPOINT *Ep, IN QH_HW *QhHw)
/* Initialize the queue head for interrupt transfer, that is, initialize the following three fields: */
VOID EhcInitIntQh(IN USB_ENDPOINT *Ep, IN QH_HW *QhHw)
{
  if (Ep->DevSpeed == EFI_USB_SPEED_HIGH) {
    QhHw->SMask = QH_MICROFRAME_0;
    return;
  }
  QhHw->SMask = QH_MICROFRAME_1;
  QhHw->CMask = QH_MICROFRAME_3 | QH_MICROFRAME_4 | QH_MICROFRAME_5;
}