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ath9k: Add more debug statements for channel context

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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2014-08-27 12:07:24 +05:30 committed by John W. Linville
parent 9ea3598b22
commit 878066e745
2 changed files with 81 additions and 12 deletions
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90
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -288,12 +288,16 @@ static void ath_chanctx_adjust_tbtt_delta(struct ath_softc *sc)
*/
static void ath_chanctx_setup_timer(struct ath_softc *sc, u32 tsf_time)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_hw *ah = sc->sc_ah;
ath9k_hw_gen_timer_start(ah, sc->p2p_ps_timer, tsf_time, 1000000);
tsf_time -= ath9k_hw_gettsf32(ah);
tsf_time = msecs_to_jiffies(tsf_time / 1000) + 1;
mod_timer(&sc->sched.timer, tsf_time);
ath_dbg(common, CHAN_CTX,
"Setup chanctx timer with timeout: %d ms\n", jiffies_to_msecs(tsf_time));
}
void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
@ -308,42 +312,55 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
u32 beacon_int;
bool noa_changed = false;
ath_dbg(common, CHAN_CTX, "event: %s, state: %s\n",
chanctx_event_string(ev),
chanctx_state_string(sc->sched.state));
if (vif)
avp = (struct ath_vif *) vif->drv_priv;
spin_lock_bh(&sc->chan_lock);
ath_dbg(common, CHAN_CTX, "cur_chan: %d MHz, event: %s, state: %s\n",
sc->cur_chan->chandef.center_freq1,
chanctx_event_string(ev),
chanctx_state_string(sc->sched.state));
switch (ev) {
case ATH_CHANCTX_EVENT_BEACON_PREPARE:
if (avp->offchannel_duration)
avp->offchannel_duration = 0;
if (avp->chanctx != sc->cur_chan)
if (avp->chanctx != sc->cur_chan) {
ath_dbg(common, CHAN_CTX,
"Contexts differ, not preparing beacon\n");
break;
}
if (sc->sched.offchannel_pending) {
sc->sched.offchannel_pending = false;
sc->next_chan = &sc->offchannel.chan;
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
ath_dbg(common, CHAN_CTX,
"Setting offchannel_pending to false\n");
}
ctx = ath_chanctx_get_next(sc, sc->cur_chan);
if (ctx->active && sc->sched.state == ATH_CHANCTX_STATE_IDLE) {
sc->next_chan = ctx;
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
ath_dbg(common, CHAN_CTX,
"Set next context, move chanctx state to WAIT_FOR_BEACON\n");
}
/* if the timer missed its window, use the next interval */
if (sc->sched.state == ATH_CHANCTX_STATE_WAIT_FOR_TIMER)
if (sc->sched.state == ATH_CHANCTX_STATE_WAIT_FOR_TIMER) {
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
ath_dbg(common, CHAN_CTX,
"Move chanctx state from WAIT_FOR_TIMER to WAIT_FOR_BEACON\n");
}
if (sc->sched.state != ATH_CHANCTX_STATE_WAIT_FOR_BEACON)
break;
ath_dbg(common, CHAN_CTX, "Preparing beacon for vif: %pM\n", vif->addr);
sc->sched.beacon_pending = true;
sc->sched.next_tbtt = REG_READ(ah, AR_NEXT_TBTT_TIMER);
@ -387,15 +404,28 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
if (noa_changed)
avp->noa_index++;
ath_dbg(common, CHAN_CTX,
"periodic_noa_duration: %d, periodic_noa_start: %d, noa_index: %d\n",
avp->periodic_noa_duration,
avp->periodic_noa_start,
avp->noa_index);
break;
case ATH_CHANCTX_EVENT_BEACON_SENT:
if (!sc->sched.beacon_pending)
if (!sc->sched.beacon_pending) {
ath_dbg(common, CHAN_CTX,
"No pending beacon\n");
break;
}
sc->sched.beacon_pending = false;
if (sc->sched.state != ATH_CHANCTX_STATE_WAIT_FOR_BEACON)
break;
ath_dbg(common, CHAN_CTX,
"Move chanctx state to WAIT_FOR_TIMER\n");
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_TIMER;
ath_chanctx_setup_timer(sc, sc->sched.switch_start_time);
break;
@ -407,6 +437,9 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
sc->sched.beacon_pending)
sc->sched.beacon_miss++;
ath_dbg(common, CHAN_CTX,
"Move chanctx state to SWITCH\n");
sc->sched.state = ATH_CHANCTX_STATE_SWITCH;
ieee80211_queue_work(sc->hw, &sc->chanctx_work);
break;
@ -435,6 +468,9 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
avp->chanctx != sc->cur_chan)
break;
ath_dbg(common, CHAN_CTX,
"Move chanctx state from FORCE_ACTIVE to IDLE\n");
sc->sched.state = ATH_CHANCTX_STATE_IDLE;
/* fall through */
case ATH_CHANCTX_EVENT_SWITCH:
@ -450,6 +486,9 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
sc->next_chan = ath_chanctx_get_next(sc, sc->cur_chan);
cur_conf = &sc->cur_chan->beacon;
ath_dbg(common, CHAN_CTX,
"Move chanctx state to WAIT_FOR_TIMER (event SWITCH)\n");
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_TIMER;
tsf_time = TU_TO_USEC(cur_conf->beacon_interval) / 2;
@ -616,7 +655,8 @@ ath_scan_next_channel(struct ath_softc *sc)
if (sc->offchannel.scan_idx >= req->n_channels) {
ath_dbg(common, CHAN_CTX,
"Moving to ATH_OFFCHANNEL_IDLE state, scan_idx: %d, n_channels: %d\n",
"Moving offchannel state to ATH_OFFCHANNEL_IDLE, "
"scan_idx: %d, n_channels: %d\n",
sc->offchannel.scan_idx,
req->n_channels);
@ -627,7 +667,7 @@ ath_scan_next_channel(struct ath_softc *sc)
}
ath_dbg(common, CHAN_CTX,
"Moving to ATH_OFFCHANNEL_PROBE_SEND state, scan_idx: %d\n",
"Moving offchannel state to ATH_OFFCHANNEL_PROBE_SEND, scan_idx: %d\n",
sc->offchannel.scan_idx);
chan = req->channels[sc->offchannel.scan_idx++];
@ -740,7 +780,7 @@ static void ath_scan_channel_start(struct ath_softc *sc)
}
ath_dbg(common, CHAN_CTX,
"Moving to ATH_OFFCHANNEL_PROBE_WAIT state\n");
"Moving offchannel state to ATH_OFFCHANNEL_PROBE_WAIT\n");
sc->offchannel.state = ATH_OFFCHANNEL_PROBE_WAIT;
mod_timer(&sc->offchannel.timer, jiffies + sc->offchannel.duration);
@ -749,6 +789,10 @@ static void ath_scan_channel_start(struct ath_softc *sc)
static void ath_chanctx_timer(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *) data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
ath_dbg(common, CHAN_CTX,
"Channel context timer invoked\n");
ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_TSF_TIMER);
}
@ -759,7 +803,7 @@ static void ath_offchannel_timer(unsigned long data)
struct ath_chanctx *ctx;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
ath_dbg(common, CHAN_CTX, "%s: state: %s\n",
ath_dbg(common, CHAN_CTX, "%s: offchannel state: %s\n",
__func__, offchannel_state_string(sc->offchannel.state));
switch (sc->offchannel.state) {
@ -770,6 +814,10 @@ static void ath_offchannel_timer(unsigned long data)
/* get first active channel context */
ctx = ath_chanctx_get_oper_chan(sc, true);
if (ctx->active) {
ath_dbg(common, CHAN_CTX,
"Switch to oper/active context, "
"move offchannel state to ATH_OFFCHANNEL_SUSPEND\n");
sc->offchannel.state = ATH_OFFCHANNEL_SUSPEND;
ath_chanctx_switch(sc, ctx, NULL);
mod_timer(&sc->offchannel.timer, jiffies + HZ / 10);
@ -858,6 +906,8 @@ ath_chanctx_send_ps_frame(struct ath_softc *sc, bool powersave)
static bool ath_chanctx_defer_switch(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
if (sc->cur_chan == &sc->offchannel.chan)
return false;
@ -868,6 +918,9 @@ static bool ath_chanctx_defer_switch(struct ath_softc *sc)
if (!sc->cur_chan->switch_after_beacon)
return false;
ath_dbg(common, CHAN_CTX,
"Defer switch, set chanctx state to WAIT_FOR_BEACON\n");
sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
break;
default:
@ -881,7 +934,7 @@ static void ath_offchannel_channel_change(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
ath_dbg(common, CHAN_CTX, "%s: state: %s\n",
ath_dbg(common, CHAN_CTX, "%s: offchannel state: %s\n",
__func__, offchannel_state_string(sc->offchannel.state));
switch (sc->offchannel.state) {
@ -920,6 +973,7 @@ static void ath_offchannel_channel_change(struct ath_softc *sc)
void ath_chanctx_set_next(struct ath_softc *sc, bool force)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct timespec ts;
bool measure_time = false;
bool send_ps = false;
@ -935,7 +989,16 @@ void ath_chanctx_set_next(struct ath_softc *sc, bool force)
return;
}
ath_dbg(common, CHAN_CTX,
"%s: current: %d MHz, next: %d MHz\n",
__func__,
sc->cur_chan->chandef.center_freq1,
sc->next_chan->chandef.center_freq1);
if (sc->cur_chan != sc->next_chan) {
ath_dbg(common, CHAN_CTX,
"Stopping current chanctx: %d\n",
sc->cur_chan->chandef.center_freq1);
sc->cur_chan->stopped = true;
spin_unlock_bh(&sc->chan_lock);
@ -968,6 +1031,9 @@ void ath_chanctx_set_next(struct ath_softc *sc, bool force)
if (sc->sc_ah->chip_fullsleep ||
memcmp(&sc->cur_chandef, &sc->cur_chan->chandef,
sizeof(sc->cur_chandef))) {
ath_dbg(common, CHAN_CTX,
"%s: Set channel %d MHz\n",
__func__, sc->cur_chan->chandef.center_freq1);
ath_set_channel(sc);
if (measure_time)
sc->sched.channel_switch_time =

3
drivers/net/wireless/ath/ath9k/main.c
View File

@ -2361,6 +2361,9 @@ static void ath9k_mgd_prepare_tx(struct ieee80211_hw *hw,
sc->next_chan = avp->chanctx;
changed = true;
}
ath_dbg(common, CHAN_CTX,
"%s: Set chanctx state to FORCE_ACTIVE, changed: %d\n",
__func__, changed);
sc->sched.state = ATH_CHANCTX_STATE_FORCE_ACTIVE;
spin_unlock_bh(&sc->chan_lock);