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ath9k: fix a few crash issues on hardware reset

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SVN-Revision: 28122
This commit is contained in:
Felix Fietkau 2011-08-29 18:41:18 +00:00
parent 78ec994ef8
commit eae76139f2
3 changed files with 370 additions and 39 deletions
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253
package/mac80211/patches/581-ath9k_use_reset_work.patch Normal file
View File

@ -0,0 +1,253 @@
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -429,6 +429,7 @@ void ath9k_set_beaconing_status(struct a
#define ATH_PAPRD_TIMEOUT 100 /* msecs */
+void ath_reset_work(struct work_struct *work);
void ath_hw_check(struct work_struct *work);
void ath_hw_pll_work(struct work_struct *work);
void ath_paprd_calibrate(struct work_struct *work);
@@ -609,6 +610,7 @@ struct ath_softc {
struct mutex mutex;
struct work_struct paprd_work;
struct work_struct hw_check_work;
+ struct work_struct hw_reset_work;
struct completion paprd_complete;
unsigned int hw_busy_count;
@@ -655,7 +657,6 @@ struct ath_softc {
};
void ath9k_tasklet(unsigned long data);
-int ath_reset(struct ath_softc *sc, bool retry_tx);
int ath_cabq_update(struct ath_softc *);
static inline void ath_read_cachesize(struct ath_common *common, int *csz)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -776,6 +776,7 @@ int ath9k_init_device(u16 devid, struct
goto error_world;
}
+ INIT_WORK(&sc->hw_reset_work, ath_reset_work);
INIT_WORK(&sc->hw_check_work, ath_hw_check);
INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -595,74 +595,6 @@ static void ath_node_detach(struct ath_s
ath_tx_node_cleanup(sc, an);
}
-void ath_hw_check(struct work_struct *work)
-{
- struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- unsigned long flags;
- int busy;
-
- ath9k_ps_wakeup(sc);
- if (ath9k_hw_check_alive(sc->sc_ah))
- goto out;
-
- spin_lock_irqsave(&common->cc_lock, flags);
- busy = ath_update_survey_stats(sc);
- spin_unlock_irqrestore(&common->cc_lock, flags);
-
- ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
- "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
- if (busy >= 99) {
- if (++sc->hw_busy_count >= 3) {
- spin_lock_bh(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
- }
- } else if (busy >= 0)
- sc->hw_busy_count = 0;
-
-out:
- ath9k_ps_restore(sc);
-}
-
-static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
-{
- static int count;
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-
- if (pll_sqsum >= 0x40000) {
- count++;
- if (count == 3) {
- /* Rx is hung for more than 500ms. Reset it */
- ath_dbg(common, ATH_DBG_RESET,
- "Possible RX hang, resetting");
- spin_lock_bh(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
- count = 0;
- }
- } else
- count = 0;
-}
-
-void ath_hw_pll_work(struct work_struct *work)
-{
- struct ath_softc *sc = container_of(work, struct ath_softc,
- hw_pll_work.work);
- u32 pll_sqsum;
-
- if (AR_SREV_9485(sc->sc_ah)) {
-
- ath9k_ps_wakeup(sc);
- pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
- ath9k_ps_restore(sc);
-
- ath_hw_pll_rx_hang_check(sc, pll_sqsum);
-
- ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
- }
-}
-
void ath9k_tasklet(unsigned long data)
{
@@ -675,9 +607,7 @@ void ath9k_tasklet(unsigned long data)
if ((status & ATH9K_INT_FATAL) ||
(status & ATH9K_INT_BB_WATCHDOG)) {
- spin_lock(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock(&sc->sc_pcu_lock);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
return;
}
@@ -968,7 +898,7 @@ void ath_radio_disable(struct ath_softc
ath9k_ps_restore(sc);
}
-int ath_reset(struct ath_softc *sc, bool retry_tx)
+static int ath_reset(struct ath_softc *sc, bool retry_tx)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
@@ -1035,6 +965,84 @@ int ath_reset(struct ath_softc *sc, bool
return r;
}
+void ath_reset_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
+
+ spin_lock_bh(&sc->sc_pcu_lock);
+ ath_reset(sc, true);
+ spin_unlock_bh(&sc->sc_pcu_lock);
+}
+
+void ath_hw_check(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ unsigned long flags;
+ int busy;
+
+ ath9k_ps_wakeup(sc);
+ if (ath9k_hw_check_alive(sc->sc_ah))
+ goto out;
+
+ spin_lock_irqsave(&common->cc_lock, flags);
+ busy = ath_update_survey_stats(sc);
+ spin_unlock_irqrestore(&common->cc_lock, flags);
+
+ ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
+ "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
+ if (busy >= 99) {
+ if (++sc->hw_busy_count >= 3) {
+ spin_lock_bh(&sc->sc_pcu_lock);
+ ath_reset(sc, true);
+ spin_unlock_bh(&sc->sc_pcu_lock);
+ }
+
+ } else if (busy >= 0)
+ sc->hw_busy_count = 0;
+
+out:
+ ath9k_ps_restore(sc);
+}
+
+static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
+{
+ static int count;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+
+ if (pll_sqsum >= 0x40000) {
+ count++;
+ if (count == 3) {
+ /* Rx is hung for more than 500ms. Reset it */
+ ath_dbg(common, ATH_DBG_RESET,
+ "Possible RX hang, resetting");
+ spin_lock_bh(&sc->sc_pcu_lock);
+ ath_reset(sc, true);
+ spin_unlock_bh(&sc->sc_pcu_lock);
+ count = 0;
+ }
+ } else
+ count = 0;
+}
+
+void ath_hw_pll_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc,
+ hw_pll_work.work);
+ u32 pll_sqsum;
+
+ if (AR_SREV_9485(sc->sc_ah)) {
+
+ ath9k_ps_wakeup(sc);
+ pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
+ ath9k_ps_restore(sc);
+
+ ath_hw_pll_rx_hang_check(sc, pll_sqsum);
+
+ ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
+ }
+}
+
/**********************/
/* mac80211 callbacks */
/**********************/
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -601,7 +601,7 @@ static void ath_tx_complete_aggr(struct
rcu_read_unlock();
if (needreset)
- ath_reset(sc, false);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
static bool ath_lookup_legacy(struct ath_buf *bf)
@@ -2268,9 +2268,7 @@ static void ath_tx_complete_poll_work(st
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
"tx hung, resetting the chip\n");
- spin_lock_bh(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -386,9 +386,7 @@ void ath_beacon_tasklet(unsigned long da
ath_dbg(common, ATH_DBG_BSTUCK,
"beacon is officially stuck\n");
sc->sc_flags |= SC_OP_TSF_RESET;
- spin_lock(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock(&sc->sc_pcu_lock);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
return;

146
package/mac80211/patches/581-ath9k_merge_reset_functions.patch → package/mac80211/patches/582-ath9k_merge_reset_functions.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -212,83 +212,47 @@ static int ath_update_survey_stats(struc
@@ -212,83 +212,57 @@ static int ath_update_survey_stats(struc
return ret;
}
@ -11,33 +11,42 @@
-*/
-static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
- struct ath9k_channel *hchan)
+static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
+static void __ath_cancel_work(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
- struct ieee80211_conf *conf = &common->hw->conf;
- bool fastcc = true, stopped;
- struct ieee80211_channel *channel = hw->conf.channel;
- struct ath9k_hw_cal_data *caldata = NULL;
- int r;
+ bool ret;
-
- if (sc->sc_flags & SC_OP_INVALID)
- return -EIO;
+ ieee80211_stop_queues(sc->hw);
sc->hw_busy_count = 0;
-
del_timer_sync(&common->ani.timer);
- sc->hw_busy_count = 0;
-
- del_timer_sync(&common->ani.timer);
cancel_work_sync(&sc->paprd_work);
cancel_work_sync(&sc->hw_check_work);
cancel_delayed_work_sync(&sc->tx_complete_work);
cancel_delayed_work_sync(&sc->hw_pll_work);
+}
- ath9k_ps_wakeup(sc);
-
+static void ath_cancel_work(struct ath_softc *sc)
+{
+ __ath_cancel_work(sc);
+ cancel_work_sync(&sc->hw_reset_work);
+}
- spin_lock_bh(&sc->sc_pcu_lock);
-
+static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ bool ret;
- /*
- * This is only performed if the channel settings have
- * actually changed.
@ -47,20 +56,24 @@
- * hardware at the new frequency, and then re-enable
- * the relevant bits of the h/w.
- */
ath9k_hw_disable_interrupts(ah);
- ath9k_hw_disable_interrupts(ah);
- stopped = ath_drain_all_txq(sc, false);
-
+ ieee80211_stop_queues(sc->hw);
- if (!ath_stoprecv(sc))
- stopped = false;
+ sc->hw_busy_count = 0;
+ del_timer_sync(&common->ani.timer);
- if (!ath9k_hw_check_alive(ah))
- stopped = false;
+ ret = ath_drain_all_txq(sc, retry_tx);
+ ath9k_hw_disable_interrupts(ah);
- /* XXX: do not flush receive queue here. We don't want
- * to flush data frames already in queue because of
- * changing channel. */
-
+ ret = ath_drain_all_txq(sc, retry_tx);
- if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
- fastcc = false;
+ if (!ath_stoprecv(sc))
@ -104,7 +117,7 @@
}
ath9k_cmn_update_txpow(ah, sc->curtxpow,
@@ -296,21 +260,89 @@ static int ath_set_channel(struct ath_so
@@ -296,21 +270,93 @@ static int ath_set_channel(struct ath_so
ath9k_hw_set_interrupts(ah, ah->imask);
ath9k_hw_enable_interrupts(ah);
@ -136,6 +149,10 @@
+ bool flush = false;
+ int r;
+
+ __ath_cancel_work(sc);
+
+ spin_lock_bh(&sc->sc_pcu_lock);
+ if (!(sc->sc_flags & SC_OP_OFFCHANNEL)) {
+ fastcc = false;
+ caldata = &sc->caldata;
@ -163,12 +180,14 @@
+ if (r) {
+ ath_err(common,
+ "Unable to reset channel, reset status %d\n", r);
+ return r;
+ goto out;
+ }
+
+ if (!ath_complete_reset(sc, true))
+ return -EIO;
+ r = -EIO;
+
+out:
spin_unlock_bh(&sc->sc_pcu_lock);
+ return 0;
+}
+
@ -182,22 +201,20 @@
+ struct ath9k_channel *hchan)
+{
+ int r;
+
+ if (sc->sc_flags & SC_OP_INVALID)
+ return -EIO;
+
+ ath9k_ps_wakeup(sc);
+
+ spin_lock_bh(&sc->sc_pcu_lock);
+ r = ath_reset_internal(sc, hchan, false);
spin_unlock_bh(&sc->sc_pcu_lock);
ath9k_ps_restore(sc);
+
return r;
}
@@ -893,28 +925,13 @@ static void ath_radio_enable(struct ath_
@@ -823,28 +869,13 @@ static void ath_radio_enable(struct ath_
channel->center_freq, r);
}
@ -227,20 +244,21 @@
spin_unlock_bh(&sc->sc_pcu_lock);
ath9k_ps_restore(sc);
@@ -927,12 +944,8 @@ void ath_radio_disable(struct ath_softc
@@ -857,11 +888,10 @@ void ath_radio_disable(struct ath_softc
int r;
ath9k_ps_wakeup(sc);
- cancel_delayed_work_sync(&sc->hw_pll_work);
-
spin_lock_bh(&sc->sc_pcu_lock);
- spin_lock_bh(&sc->sc_pcu_lock);
+ ath_cancel_work(sc);
- ieee80211_stop_queues(hw);
-
+ spin_lock_bh(&sc->sc_pcu_lock);
/*
* Keep the LED on when the radio is disabled
* during idle unassociated state.
@@ -942,13 +955,7 @@ void ath_radio_disable(struct ath_softc
@@ -872,13 +902,7 @@ void ath_radio_disable(struct ath_softc
ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
}
@ -255,9 +273,9 @@
if (!ah->curchan)
ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
@@ -970,48 +977,11 @@ void ath_radio_disable(struct ath_softc
@@ -900,48 +924,11 @@ void ath_radio_disable(struct ath_softc
int ath_reset(struct ath_softc *sc, bool retry_tx)
static int ath_reset(struct ath_softc *sc, bool retry_tx)
{
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
@ -305,7 +323,7 @@
if (retry_tx) {
int i;
@@ -1024,12 +994,6 @@ int ath_reset(struct ath_softc *sc, bool
@@ -954,12 +941,6 @@ static int ath_reset(struct ath_softc *s
}
}
@ -318,7 +336,42 @@
ath9k_ps_restore(sc);
return r;
@@ -1081,28 +1045,6 @@ static int ath9k_start(struct ieee80211_
@@ -969,9 +950,7 @@ void ath_reset_work(struct work_struct *
{
struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
- spin_lock_bh(&sc->sc_pcu_lock);
ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
}
void ath_hw_check(struct work_struct *work)
@@ -992,11 +971,8 @@ void ath_hw_check(struct work_struct *wo
ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
"busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
if (busy >= 99) {
- if (++sc->hw_busy_count >= 3) {
- spin_lock_bh(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
- }
+ if (++sc->hw_busy_count >= 3)
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
} else if (busy >= 0)
sc->hw_busy_count = 0;
@@ -1016,9 +992,7 @@ static void ath_hw_pll_rx_hang_check(str
/* Rx is hung for more than 500ms. Reset it */
ath_dbg(common, ATH_DBG_RESET,
"Possible RX hang, resetting");
- spin_lock_bh(&sc->sc_pcu_lock);
- ath_reset(sc, true);
- spin_unlock_bh(&sc->sc_pcu_lock);
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
count = 0;
}
} else
@@ -1089,28 +1063,6 @@ static int ath9k_start(struct ieee80211_
goto mutex_unlock;
}
@ -347,7 +400,7 @@
/* Setup our intr mask. */
ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
ATH9K_INT_RXORN | ATH9K_INT_FATAL |
@@ -1125,12 +1067,14 @@ static int ath9k_start(struct ieee80211_
@@ -1133,12 +1085,14 @@ static int ath9k_start(struct ieee80211_
/* Disable BMISS interrupt when we're not associated */
ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
@ -366,3 +419,28 @@
if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
!ah->btcoex_hw.enabled) {
@@ -1231,10 +1185,7 @@ static void ath9k_stop(struct ieee80211_
mutex_lock(&sc->mutex);
- cancel_delayed_work_sync(&sc->tx_complete_work);
- cancel_delayed_work_sync(&sc->hw_pll_work);
- cancel_work_sync(&sc->paprd_work);
- cancel_work_sync(&sc->hw_check_work);
+ ath_cancel_work(sc);
if (sc->sc_flags & SC_OP_INVALID) {
ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
@@ -2351,9 +2302,11 @@ static void ath9k_flush(struct ieee80211
ath9k_ps_wakeup(sc);
spin_lock_bh(&sc->sc_pcu_lock);
drain_txq = ath_drain_all_txq(sc, false);
+ spin_unlock_bh(&sc->sc_pcu_lock);
+
if (!drain_txq)
ath_reset(sc, false);
- spin_unlock_bh(&sc->sc_pcu_lock);
+
ath9k_ps_restore(sc);
ieee80211_wake_queues(hw);

10
package/mac80211/patches/582-ath9k_antenna_control.patch → package/mac80211/patches/583-ath9k_antenna_control.patch
View File

@ -57,7 +57,7 @@
}
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -652,6 +652,7 @@ struct ath_softc {
@@ -654,6 +654,7 @@ struct ath_softc {
struct ath_descdma txsdma;
struct ath_ant_comb ant_comb;
@ -65,7 +65,7 @@
};
void ath9k_tasklet(unsigned long data);
@@ -673,6 +674,7 @@ int ath9k_init_device(u16 devid, struct
@@ -674,6 +675,7 @@ int ath9k_init_device(u16 devid, struct
const struct ath_bus_ops *bus_ops);
void ath9k_deinit_device(struct ath_softc *sc);
void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
@ -75,7 +75,7 @@
bool ath9k_uses_beacons(int type);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -270,6 +270,22 @@ static bool ath_complete_reset(struct at
@@ -280,6 +280,22 @@ static bool ath_complete_reset(struct at
ath_start_ani(common);
}
@ -98,7 +98,7 @@
ieee80211_wake_queues(sc->hw);
return true;
@@ -2366,6 +2382,59 @@ static int ath9k_get_stats(struct ieee80
@@ -2383,6 +2399,59 @@ static int ath9k_get_stats(struct ieee80
return 0;
}
@ -158,7 +158,7 @@
struct ieee80211_ops ath9k_ops = {
.tx = ath9k_tx,
.start = ath9k_start,
@@ -2392,4 +2461,6 @@ struct ieee80211_ops ath9k_ops = {
@@ -2409,4 +2478,6 @@ struct ieee80211_ops ath9k_ops = {
.tx_frames_pending = ath9k_tx_frames_pending,
.tx_last_beacon = ath9k_tx_last_beacon,
.get_stats = ath9k_get_stats,