IWM_CSR_INT_BIT_FH_TX
if (r1 & IWM_CSR_INT_BIT_FH_TX) {
handled |= IWM_CSR_INT_BIT_FH_TX;
sc->sc_intmask = IWM_CSR_INT_BIT_FH_TX;
IWM_CSR_INT_BIT_FH_TX | \