IWM_HBUS_TARG_WRPTR
IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, qid << 8 | 0);
IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, qid << 8 | idx);
IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);