XYC_IPND
xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */
if (xyc->xyc_csr & XYC_IPND) {
xyc->xyc_csr = XYC_IPND; /* clear interrupt */
xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */
if (xyc->xyc_csr & XYC_IPND) {
xyc->xyc_csr = XYC_IPND; /* clear interrupt */