Register mesh PS ops on interface add and de-register on
removal.
React to doze/wakeup calls issued by mac80211.
Add a PS status flag PS_MAC80211_CTL to store last mesh PS
command from mac80211.
On doze call configure the HW to wakeup on the given TSF value.
Signed-off-by: Marco Porsch <marco@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 1 +
drivers/net/wireless/ath/ath9k/beacon.c | 21 +++++++++-
drivers/net/wireless/ath/ath9k/hw.c | 20 ++++++---
drivers/net/wireless/ath/ath9k/main.c | 67 ++++++++++++++++++++++++++++++-
4 files changed, 101 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index b2d6c18..3dc83e5 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -650,6 +650,7 @@ enum sc_op_flags {
#define PS_WAIT_FOR_TX_ACK BIT(3)
#define PS_BEACON_SYNC BIT(4)
#define PS_WAIT_FOR_ANI BIT(5)
+#define PS_MAC80211_CTL BIT(6)
struct ath_rate_table;
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index dd37719..7ef698b 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -599,6 +599,23 @@ static void ath9k_beacon_config_adhoc(struct ath_softc *sc,
ath9k_beacon_init(sc, nexttbtt, intval);
}
+static void ath9k_beacon_config_mesh(struct ath_softc *sc,
+ struct ath_beacon_config *conf)
+{
+ struct ath9k_beacon_state bs;
+
+ /*
+ * when PS is enabled, ath9k_hw_setrxabort is set.
+ * to wake up again to receive peers' beacons, we set an
+ * arbitrary initial value for sleepduration here
+ */
+ memset(&bs, 0, sizeof(bs));
+ bs.bs_sleepduration = IEEE80211_MS_TO_TU(100);
+ ath9k_hw_set_sta_beacon_timers(sc->sc_ah, &bs);
+
+ ath9k_beacon_config_adhoc(sc, conf);
+}
+
bool ath9k_allow_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -707,9 +724,11 @@ void ath9k_set_beacon(struct ath_softc *sc)
ath9k_beacon_config_ap(sc, cur_conf);
break;
case NL80211_IFTYPE_ADHOC:
- case NL80211_IFTYPE_MESH_POINT:
ath9k_beacon_config_adhoc(sc, cur_conf);
break;
+ case NL80211_IFTYPE_MESH_POINT:
+ ath9k_beacon_config_mesh(sc, cur_conf);
+ break;
case NL80211_IFTYPE_STATION:
ath9k_beacon_config_sta(sc, cur_conf);
break;
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 42cf3c7..f851678 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2254,16 +2254,24 @@ void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
}
EXPORT_SYMBOL(ath9k_hw_beaconinit);
+/**
+ * ath9k_hw_set_sta_beacon_timers
+ *
+ * in mesh mode overwriting AR_NEXT_TBTT_TIMER and setting AR_TBTT_TIMER_EN
+ * would shift the own TBTT
+ * TODO rename?
+ */
void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
const struct ath9k_beacon_state *bs)
{
- u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
+ u32 nextTbtt, beaconintval, dtimperiod, beacontimeout, ar_timer_mode;
struct ath9k_hw_capabilities *pCap = &ah->caps;
struct ath_common *common = ath9k_hw_common(ah);
ENABLE_REGWRITE_BUFFER(ah);
- REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
+ if (ah->opmode != NL80211_IFTYPE_MESH_POINT)
+ REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(bs->bs_nexttbtt));
REG_WRITE(ah, AR_BEACON_PERIOD,
TU_TO_USEC(bs->bs_intval));
@@ -2317,9 +2325,11 @@ void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
REGWRITE_BUFFER_FLUSH(ah);
- REG_SET_BIT(ah, AR_TIMER_MODE,
- AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
- AR_DTIM_TIMER_EN);
+ ar_timer_mode = AR_DTIM_TIMER_EN | AR_TIM_TIMER_EN;
+ if (ah->opmode != NL80211_IFTYPE_MESH_POINT)
+ ar_timer_mode |= AR_TBTT_TIMER_EN;
+
+ REG_SET_BIT(ah, AR_TIMER_MODE, ar_timer_mode);
/* TSF Out of Range Threshold */
REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 4b72b66..a4e6623 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -132,7 +132,8 @@ void ath9k_ps_restore(struct ath_softc *sc)
PS_WAIT_FOR_CAB |
PS_WAIT_FOR_PSPOLL_DATA |
PS_WAIT_FOR_TX_ACK |
- PS_WAIT_FOR_ANI))) {
+ PS_WAIT_FOR_ANI |
+ PS_MAC80211_CTL))) {
mode = ATH9K_PM_NETWORK_SLEEP;
if (ath9k_hw_btcoex_is_enabled(sc->sc_ah))
ath9k_btcoex_stop_gen_timer(sc);
@@ -821,6 +822,63 @@ static void ath9k_stop(struct ieee80211_hw *hw)
ath_dbg(common, CONFIG, "Driver halt\n");
}
+static void ath9k_mesh_wakeup_set(struct ath_softc *sc, u64 nexttbtt)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath9k_beacon_state bs;
+ u32 nexttbtttu = TSF_TO_TU(nexttbtt >> 32, nexttbtt);
+
+ memset(&bs, 0, sizeof(bs));
+ bs.bs_nexttbtt = nexttbtttu;
+ bs.bs_nextdtim = nexttbtttu;
+ /*
+ * arbitrary values to avoid frequent wakeups,
+ * high enough to not interfere with nexttbtt
+ * TODO adaptive
+ */
+ bs.bs_intval = 1000;
+ bs.bs_dtimperiod = 4000;
+ bs.bs_sleepduration = 1000;
+
+ ath9k_hw_set_sta_beacon_timers(ah, &bs);
+}
+
+static void ath9k_mesh_doze(struct ieee80211_hw *hw, u64 nexttbtt)
+{
+ struct ath_softc *sc = hw->priv;
+ unsigned long flags;
+
+ ath9k_ps_wakeup(sc);
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
+ /* in mesh mode mac80211 checks beacons and CAB */
+ sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
+ PS_WAIT_FOR_CAB |
+ PS_MAC80211_CTL);
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+
+ if (nexttbtt)
+ ath9k_mesh_wakeup_set(sc, nexttbtt);
+
+ ath9k_ps_restore(sc);
+}
+
+static void ath9k_mesh_wakeup(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+ unsigned long flags;
+
+ ath9k_ps_wakeup(sc);
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
+ sc->ps_flags |= PS_MAC80211_CTL;
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+ ath9k_ps_restore(sc);
+}
+
+static const struct ieee80211_mps_ops ath9k_mesh_ps_ops = {
+ .hw_doze = ath9k_mesh_doze,
+ .hw_wakeup = ath9k_mesh_wakeup,
+};
+
bool ath9k_uses_beacons(int type)
{
switch (type) {
@@ -931,6 +989,11 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
ah->opmode = NL80211_IFTYPE_ADHOC;
else
ah->opmode = NL80211_IFTYPE_STATION;
+
+ if (ah->opmode == NL80211_IFTYPE_MESH_POINT)
+ ieee80211_mps_init(hw, &ath9k_mesh_ps_ops);
+ else if (old_opmode == NL80211_IFTYPE_MESH_POINT)
+ ieee80211_mps_init(hw, NULL);
}
ath9k_hw_setopmode(ah);
@@ -1175,7 +1238,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
* We just prepare to enable PS. We have to wait until our AP has
* ACK'd our null data frame to disable RX otherwise we'll ignore
* those ACKs and end up retransmitting the same null data frames.
- * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
+ * IEEE80211_CONF_CHANGE_PS is passed by mac80211 for STA or mesh mode.
*/
if (changed & IEEE80211_CONF_CHANGE_PS) {
unsigned long flags;
--
1.7.9.5
--
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