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path: root/drivers/net/wireless/ath/ath9k/beacon.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/beacon.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/beacon.c97
1 files changed, 41 insertions, 56 deletions
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 6d2a545fc35e..74f33bc193fe 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -57,8 +57,8 @@ int ath_beaconq_config(struct ath_softc *sc)
/*
* Associates the beacon frame buffer with a transmit descriptor. Will set
- * up all required antenna switch parameters, rate codes, and channel flags.
- * Beacons are always sent out at the lowest rate, and are not retried.
+ * up rate codes, and channel flags. Beacons are always sent out at the
+ * lowest rate, and are not retried.
*/
static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
struct ath_buf *bf, int rateidx)
@@ -68,7 +68,7 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
struct ath_common *common = ath9k_hw_common(ah);
struct ath_desc *ds;
struct ath9k_11n_rate_series series[4];
- int flags, antenna, ctsrate = 0, ctsduration = 0;
+ int flags, ctsrate = 0, ctsduration = 0;
struct ieee80211_supported_band *sband;
u8 rate = 0;
@@ -76,12 +76,6 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
flags = ATH9K_TXDESC_NOACK;
ds->ds_link = 0;
- /*
- * Switch antenna every beacon.
- * Should only switch every beacon period, not for every SWBA
- * XXX assumes two antennae
- */
- antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
sband = &sc->sbands[common->hw->conf.channel->band];
rate = sband->bitrates[rateidx].hw_value;
@@ -278,7 +272,7 @@ int ath_beacon_alloc(struct ath_softc *sc, struct ieee80211_vif *vif)
return -ENOMEM;
tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
- sc->beacon.bc_tstamp = le64_to_cpu(tstamp);
+ sc->beacon.bc_tstamp = (u32) le64_to_cpu(tstamp);
/* Calculate a TSF adjustment factor required for staggered beacons. */
if (avp->av_bslot > 0) {
u64 tsfadjust;
@@ -294,8 +288,8 @@ int ath_beacon_alloc(struct ath_softc *sc, struct ieee80211_vif *vif)
* adjustment. Other slots are adjusted to get the timestamp
* close to the TBTT for the BSS.
*/
- tsfadjust = intval * avp->av_bslot / ATH_BCBUF;
- avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
+ tsfadjust = TU_TO_USEC(intval * avp->av_bslot) / ATH_BCBUF;
+ avp->tsf_adjust = cpu_to_le64(tsfadjust);
ath_dbg(common, ATH_DBG_BEACON,
"stagger beacons, bslot %d intval %u tsfadjust %llu\n",
@@ -369,12 +363,13 @@ void ath_beacon_tasklet(unsigned long data)
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
sc->beacon.bmisscnt++;
- if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
+ if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
ath_dbg(common, ATH_DBG_BSTUCK,
"missed %u consecutive beacons\n",
sc->beacon.bmisscnt);
ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
- ath9k_hw_bstuck_nfcal(ah);
+ if (sc->beacon.bmisscnt > 3)
+ ath9k_hw_bstuck_nfcal(ah);
} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
ath_dbg(common, ATH_DBG_BSTUCK,
"beacon is officially stuck\n");
@@ -385,13 +380,6 @@ void ath_beacon_tasklet(unsigned long data)
return;
}
- if (sc->beacon.bmisscnt != 0) {
- ath_dbg(common, ATH_DBG_BSTUCK,
- "resume beacon xmit after %u misses\n",
- sc->beacon.bmisscnt);
- sc->beacon.bmisscnt = 0;
- }
-
/*
* Generate beacon frames. we are sending frames
* staggered so calculate the slot for this frame based
@@ -401,8 +389,9 @@ void ath_beacon_tasklet(unsigned long data)
intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
tsf = ath9k_hw_gettsf64(ah);
- tsftu = TSF_TO_TU(tsf>>32, tsf);
- slot = ((tsftu % intval) * ATH_BCBUF) / intval;
+ tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
+ tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
+ slot = (tsftu % (intval * ATH_BCBUF)) / intval;
/*
* Reverse the slot order to get slot 0 on the TBTT offset that does
* not require TSF adjustment and other slots adding
@@ -415,7 +404,7 @@ void ath_beacon_tasklet(unsigned long data)
ath_dbg(common, ATH_DBG_BEACON,
"slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
- slot, tsf, tsftu, intval, vif);
+ slot, tsf, tsftu / ATH_BCBUF, intval, vif);
bfaddr = 0;
if (vif) {
@@ -424,6 +413,13 @@ void ath_beacon_tasklet(unsigned long data)
bfaddr = bf->bf_daddr;
bc = 1;
}
+
+ if (sc->beacon.bmisscnt != 0) {
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "resume beacon xmit after %u misses\n",
+ sc->beacon.bmisscnt);
+ sc->beacon.bmisscnt = 0;
+ }
}
/*
@@ -463,13 +459,17 @@ static void ath9k_beacon_init(struct ath_softc *sc,
u32 next_beacon,
u32 beacon_period)
{
- if (beacon_period & ATH9K_BEACON_RESET_TSF)
+ if (sc->sc_flags & SC_OP_TSF_RESET) {
ath9k_ps_wakeup(sc);
+ ath9k_hw_reset_tsf(sc->sc_ah);
+ }
ath9k_hw_beaconinit(sc->sc_ah, next_beacon, beacon_period);
- if (beacon_period & ATH9K_BEACON_RESET_TSF)
+ if (sc->sc_flags & SC_OP_TSF_RESET) {
ath9k_ps_restore(sc);
+ sc->sc_flags &= ~SC_OP_TSF_RESET;
+ }
}
/*
@@ -484,18 +484,14 @@ static void ath_beacon_config_ap(struct ath_softc *sc,
u32 nexttbtt, intval;
/* NB: the beacon interval is kept internally in TU's */
- intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
+ intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD);
intval /= ATH_BCBUF; /* for staggered beacons */
nexttbtt = intval;
- if (sc->sc_flags & SC_OP_TSF_RESET)
- intval |= ATH9K_BEACON_RESET_TSF;
-
/*
* In AP mode we enable the beacon timers and SWBA interrupts to
* prepare beacon frames.
*/
- intval |= ATH9K_BEACON_ENA;
ah->imask |= ATH9K_INT_SWBA;
ath_beaconq_config(sc);
@@ -505,11 +501,6 @@ static void ath_beacon_config_ap(struct ath_softc *sc,
ath9k_beacon_init(sc, nexttbtt, intval);
sc->beacon.bmisscnt = 0;
ath9k_hw_set_interrupts(ah, ah->imask);
-
- /* Clear the reset TSF flag, so that subsequent beacon updation
- will not reset the HW TSF. */
-
- sc->sc_flags &= ~SC_OP_TSF_RESET;
}
/*
@@ -643,25 +634,20 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- u64 tsf;
- u32 tsftu, intval, nexttbtt;
-
- intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
-
-
- /* Pull nexttbtt forward to reflect the current TSF */
-
- nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp);
- if (nexttbtt == 0)
- nexttbtt = intval;
- else if (intval)
- nexttbtt = roundup(nexttbtt, intval);
-
- tsf = ath9k_hw_gettsf64(ah);
- tsftu = TSF_TO_TU((u32)(tsf>>32), (u32)tsf) + FUDGE;
- do {
- nexttbtt += intval;
- } while (nexttbtt < tsftu);
+ u32 tsf, delta, intval, nexttbtt;
+
+ tsf = ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE);
+ intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD);
+
+ if (!sc->beacon.bc_tstamp)
+ nexttbtt = tsf + intval;
+ else {
+ if (tsf > sc->beacon.bc_tstamp)
+ delta = (tsf - sc->beacon.bc_tstamp);
+ else
+ delta = (tsf + 1 + (~0U - sc->beacon.bc_tstamp));
+ nexttbtt = tsf + roundup(delta, intval);
+ }
ath_dbg(common, ATH_DBG_BEACON,
"IBSS nexttbtt %u intval %u (%u)\n",
@@ -672,7 +658,6 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
* if we need to manually prepare beacon frames. Otherwise we use a
* self-linked tx descriptor and let the hardware deal with things.
*/
- intval |= ATH9K_BEACON_ENA;
ah->imask |= ATH9K_INT_SWBA;
ath_beaconq_config(sc);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-22 00:59:28 +0100