IEEE80211_DUR_TU
AR_WRITE(sc, AR_NEXT_TBTT_TIMER, next_tbtt * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_BEACON_PERIOD, intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_DMA_BEACON_PERIOD, intval * IEEE80211_DUR_TU);
(next_dtim - AR_SLEEP_SLOP) * IEEE80211_DUR_TU);
(next_tbtt - AR_SLEEP_SLOP) * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_TIM_PERIOD, intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_DTIM_PERIOD, dtim_period * intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_NEXT_TBTT_TIMER, next_tbtt * IEEE80211_DUR_TU);
(next_tbtt - AR_BEACON_DMA_DELAY) * IEEE80211_DUR_TU);
(next_tbtt - AR_SWBA_DELAY) * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_BEACON_PERIOD, intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_DMA_BEACON_PERIOD, intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_SWBA_PERIOD, intval * IEEE80211_DUR_TU);
AR_WRITE(sc, AR_NDP_PERIOD, intval * IEEE80211_DUR_TU);
ival = ic->ic_bss->ni_intval * IEEE80211_DUR_TU;
__SHIFTIN(__SHIFTOUT(tbtt - TBTTOFS * IEEE80211_DUR_TU,
dtim_off = ni->ni_dtim_count * ni->ni_intval * IEEE80211_DUR_TU;
duration = IEEE80211_DUR_TU;
tsf = tsf - (tsf % (ni->ni_intval * IEEE80211_DUR_TU));
tsf -= IEEE80211_DUR_TU;
tsf = tsf - (tsf % (ni->ni_intval * IEEE80211_DUR_TU));
tsf -= IEEE80211_DUR_TU;