AR_INTR_SYNC_CAUSE
REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) &