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ath9k: remove the deaf rx path state check patch 

This needs to be refined and reworked before we can safely leave it
enabled by default

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2017-01-31 11:38:25 +01:00
parent 406f85a328
commit 5f2a1ac59a
10 changed files with 53 additions and 149 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
package/kernel/mac80211/patches/356-ath9k-check-for-deaf-rx-path-state.patch
View File

@ -1,100 +0,0 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 25 Jan 2017 13:00:58 +0100
Subject: [PATCH] ath9k: check for deaf rx path state
Various chips occasionally run into a state where the tx path still
appears to be working normally, but the rx path is deaf.
There is no known register signature to check for this state explicitly,
so use the lack of rx interrupts as an indicator.
This detection is prone to false positives, since a device could also
simply be in an environment where there are no frames on the air.
However, in this case doing a reset should be harmless since it's
obviously not interrupting any real activity. To avoid confusion, call
the reset counters in this case "Rx path inactive" instead of something
like "Rx path deaf", since it may not be an indication of a real
hardware failure.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -1027,6 +1027,7 @@ struct ath_softc {
u8 gtt_cnt;
u32 intrstatus;
+ u32 rx_active;
u16 ps_flags; /* PS_* */
bool ps_enabled;
bool ps_idle;
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -763,6 +763,7 @@ static int read_file_reset(struct seq_fi
[RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
[RESET_TYPE_MCI] = "MCI Reset",
[RESET_TYPE_CALIBRATION] = "Calibration error",
+ [RESET_TYPE_RX_INACTIVE] = "Rx path inactive",
[RESET_TX_DMA_ERROR] = "Tx DMA stop error",
[RESET_RX_DMA_ERROR] = "Rx DMA stop error",
};
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -50,6 +50,7 @@ enum ath_reset_type {
RESET_TYPE_BEACON_STUCK,
RESET_TYPE_MCI,
RESET_TYPE_CALIBRATION,
+ RESET_TYPE_RX_INACTIVE,
RESET_TX_DMA_ERROR,
RESET_RX_DMA_ERROR,
__RESET_TYPE_MAX
--- a/drivers/net/wireless/ath/ath9k/link.c
+++ b/drivers/net/wireless/ath/ath9k/link.c
@@ -53,13 +53,27 @@ reset:
}
+static bool ath_rx_active_check(struct ath_softc *sc)
+{
+ if (sc->rx_active) {
+ sc->rx_active = 0;
+ return true;
+ }
+
+ ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
+ "rx path inactive, resetting the chip\n");
+ ath9k_queue_reset(sc, RESET_TYPE_RX_INACTIVE);
+ return false;
+}
+
void ath_hw_check_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
hw_check_work.work);
if (!ath_hw_check(sc) ||
- !ath_tx_complete_check(sc))
+ !ath_tx_complete_check(sc) ||
+ !ath_rx_active_check(sc))
return;
ieee80211_queue_delayed_work(sc->hw, &sc->hw_check_work,
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -269,6 +269,7 @@ static bool ath_complete_reset(struct at
}
sc->gtt_cnt = 0;
+ sc->rx_active = 1;
ath9k_hw_set_interrupts(ah);
ath9k_hw_enable_interrupts(ah);
@@ -452,6 +453,7 @@ void ath9k_tasklet(unsigned long data)
ath_rx_tasklet(sc, 0, true);
ath_rx_tasklet(sc, 0, false);
+ sc->rx_active = 1;
}
if (status & ATH9K_INT_TX) {

12
package/kernel/mac80211/patches/357-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch → package/kernel/mac80211/patches/356-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch
View File

@ -118,7 +118,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -375,21 +375,20 @@ void ath9k_tasklet(unsigned long data)
@@ -374,21 +374,20 @@ void ath9k_tasklet(unsigned long data)
struct ath_common *common = ath9k_hw_common(ah);
enum ath_reset_type type;
unsigned long flags;
@ -146,7 +146,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
ath_dbg(common, RESET, "FATAL: Skipping interrupts\n");
goto out;
}
@@ -405,11 +404,6 @@ void ath9k_tasklet(unsigned long data)
@@ -404,11 +403,6 @@ void ath9k_tasklet(unsigned long data)
type = RESET_TYPE_BB_WATCHDOG;
ath9k_queue_reset(sc, type);
@ -158,7 +158,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
ath_dbg(common, RESET,
"BB_WATCHDOG: Skipping interrupts\n");
goto out;
@@ -422,7 +416,6 @@ void ath9k_tasklet(unsigned long data)
@@ -421,7 +415,6 @@ void ath9k_tasklet(unsigned long data)
if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) {
type = RESET_TYPE_TX_GTT;
ath9k_queue_reset(sc, type);
@ -166,7 +166,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
ath_dbg(common, RESET,
"GTT: Skipping interrupts\n");
goto out;
@@ -480,7 +473,7 @@ void ath9k_tasklet(unsigned long data)
@@ -478,7 +471,7 @@ void ath9k_tasklet(unsigned long data)
ath9k_btcoex_handle_interrupt(sc, status);
/* re-enable hardware interrupt */
@ -175,7 +175,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
out:
spin_unlock(&sc->sc_pcu_lock);
ath9k_ps_restore(sc);
@@ -544,7 +537,9 @@ irqreturn_t ath_isr(int irq, void *dev)
@@ -542,7 +535,9 @@ irqreturn_t ath_isr(int irq, void *dev)
return IRQ_NONE;
/* Cache the status */
@ -186,7 +186,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (status & SCHED_INTR)
sched = true;
@@ -590,7 +585,7 @@ chip_reset:
@@ -588,7 +583,7 @@ chip_reset:
if (sched) {
/* turn off every interrupt */

4
package/kernel/mac80211/patches/500-ath9k_eeprom_debugfs.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1316,6 +1316,53 @@ void ath9k_deinit_debug(struct ath_softc
@@ -1315,6 +1315,53 @@ void ath9k_deinit_debug(struct ath_softc
ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
}
@ -54,7 +54,7 @@
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -1335,6 +1382,8 @@ int ath9k_init_debug(struct ath_hw *ah)
@@ -1334,6 +1381,8 @@ int ath9k_init_debug(struct ath_hw *ah)
ath9k_tx99_init_debug(sc);
ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);

4
package/kernel/mac80211/patches/512-ath9k_channelbw_debugfs.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1363,6 +1363,52 @@ static const struct file_operations fops
@@ -1362,6 +1362,52 @@ static const struct file_operations fops
.owner = THIS_MODULE
};
@ -53,7 +53,7 @@
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -1384,6 +1430,8 @@ int ath9k_init_debug(struct ath_hw *ah)
@@ -1383,6 +1429,8 @@ int ath9k_init_debug(struct ath_hw *ah)
debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_eeprom);

18
package/kernel/mac80211/patches/530-ath9k_extra_leds.patch
View File

@ -24,7 +24,7 @@
struct ath_softc {
struct ieee80211_hw *hw;
struct device *dev;
@@ -1047,9 +1057,8 @@ struct ath_softc {
@@ -1046,9 +1056,8 @@ struct ath_softc {
spinlock_t chan_lock;
#ifdef CPTCFG_MAC80211_LEDS
@ -103,8 +103,7 @@
+ GFP_KERNEL);
+ if (!led)
+ return -ENOMEM;
- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
+
+ led->gpio = gpio = (struct gpio_led *) (led + 1);
+ _name = (char *) (led->gpio + 1);
+
@ -117,7 +116,8 @@
+ ret = ath_add_led(sc, led);
+ if (unlikely(ret < 0))
+ kfree(led);
+
- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
+ return ret;
}
@ -125,11 +125,11 @@
{
- if (!sc->led_registered)
- return;
-
- ath_led_brightness(&sc->led_cdev, LED_OFF);
- led_classdev_unregister(&sc->led_cdev);
+ struct ath_led *led;
- ath_led_brightness(&sc->led_cdev, LED_OFF);
- led_classdev_unregister(&sc->led_cdev);
-
- ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin);
+ while (!list_empty(&sc->leds)) {
+ led = list_first_entry(&sc->leds, struct ath_led, list);
@ -192,7 +192,7 @@
#endif
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1408,6 +1408,61 @@ static const struct file_operations fops
@@ -1407,6 +1407,61 @@ static const struct file_operations fops
.llseek = default_llseek,
};
@ -254,7 +254,7 @@
int ath9k_init_debug(struct ath_hw *ah)
{
@@ -1432,6 +1487,10 @@ int ath9k_init_debug(struct ath_hw *ah)
@@ -1431,6 +1486,10 @@ int ath9k_init_debug(struct ath_hw *ah)
&fops_eeprom);
debugfs_create_file("chanbw", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_chanbw);

6
package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1464,6 +1464,50 @@ static const struct file_operations fops
@@ -1463,6 +1463,50 @@ static const struct file_operations fops
#endif
@ -51,7 +51,7 @@
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -1491,6 +1535,8 @@ int ath9k_init_debug(struct ath_hw *ah)
@@ -1490,6 +1534,8 @@ int ath9k_init_debug(struct ath_hw *ah)
debugfs_create_file("gpio_led", S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_gpio_led);
#endif
@ -125,7 +125,7 @@
REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -529,6 +529,11 @@ irqreturn_t ath_isr(int irq, void *dev)
@@ -527,6 +527,11 @@ irqreturn_t ath_isr(int irq, void *dev)
if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
return IRQ_HANDLED;

2
package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch
View File

@ -33,7 +33,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
struct ath_softc {
struct ieee80211_hw *hw;
struct device *dev;
@@ -1059,6 +1068,9 @@ struct ath_softc {
@@ -1058,6 +1067,9 @@ struct ath_softc {
#ifdef CPTCFG_MAC80211_LEDS
const char *led_default_trigger;
struct list_head leds;

2
package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch
View File

@ -10,7 +10,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -1070,6 +1070,7 @@ struct ath_softc {
@@ -1069,6 +1069,7 @@ struct ath_softc {
struct list_head leds;
#ifdef CONFIG_GPIOLIB
struct ath9k_gpio_chip *gpiochip;

50
package/kernel/mac80211/patches/556-ath9k-define-all-EEPROM-fields-in-Little-Endian-form.patch
View File

@ -349,6 +349,16 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
-
- integer = swab32(eep->modalHeader.antCtrlCommon);
- eep->modalHeader.antCtrlCommon = integer;
-
- for (i = 0; i < AR5416_EEP4K_MAX_CHAINS; i++) {
- integer = swab32(eep->modalHeader.antCtrlChain[i]);
- eep->modalHeader.antCtrlChain[i] = integer;
- }
-
- for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
- word = swab16(eep->modalHeader.spurChans[i].spurChan);
- eep->modalHeader.spurChans[i].spurChan = word;
- }
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.length);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.checksum);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.version);
@ -358,18 +368,10 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.blueToothOptions);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.deviceCap);
+ EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlCommon);
- for (i = 0; i < AR5416_EEP4K_MAX_CHAINS; i++) {
- integer = swab32(eep->modalHeader.antCtrlChain[i]);
- eep->modalHeader.antCtrlChain[i] = integer;
- }
+
+ for (i = 0; i < AR5416_EEP4K_MAX_CHAINS; i++)
+ EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlChain[i]);
- for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
- word = swab16(eep->modalHeader.spurChans[i].spurChan);
- eep->modalHeader.spurChans[i].spurChan = word;
- }
+
+ for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++)
+ EEPROM_FIELD_SWAB16(
+ eep->modalHeader.spurChans[i].spurChan);
@ -540,6 +542,16 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
-
- integer = swab32(eep->modalHeader.antCtrlCommon);
- eep->modalHeader.antCtrlCommon = integer;
-
- for (i = 0; i < AR9287_MAX_CHAINS; i++) {
- integer = swab32(eep->modalHeader.antCtrlChain[i]);
- eep->modalHeader.antCtrlChain[i] = integer;
- }
-
- for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
- word = swab16(eep->modalHeader.spurChans[i].spurChan);
- eep->modalHeader.spurChans[i].spurChan = word;
- }
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.length);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.checksum);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.version);
@ -549,18 +561,10 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.blueToothOptions);
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.deviceCap);
+ EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlCommon);
- for (i = 0; i < AR9287_MAX_CHAINS; i++) {
- integer = swab32(eep->modalHeader.antCtrlChain[i]);
- eep->modalHeader.antCtrlChain[i] = integer;
- }
+
+ for (i = 0; i < AR9287_MAX_CHAINS; i++)
+ EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlChain[i]);
- for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
- word = swab16(eep->modalHeader.spurChans[i].spurChan);
- eep->modalHeader.spurChans[i].spurChan = word;
- }
+
+ for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++)
+ EEPROM_FIELD_SWAB16(
+ eep->modalHeader.spurChans[i].spurChan);
@ -712,7 +716,8 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
if (need_swap) {
- u32 integer, j;
- u16 word;
-
+ u32 j;
- word = swab16(eep->baseEepHeader.length);
- eep->baseEepHeader.length = word;
-
@ -733,8 +738,7 @@ Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
-
- word = swab16(eep->baseEepHeader.blueToothOptions);
- eep->baseEepHeader.blueToothOptions = word;
+ u32 j;
-
- word = swab16(eep->baseEepHeader.deviceCap);
- eep->baseEepHeader.deviceCap = word;
+ EEPROM_FIELD_SWAB16(eep->baseEepHeader.length);

4
package/kernel/mac80211/patches/560-ath9k_ubnt_uap_plus_hsr.patch
View File

@ -343,7 +343,7 @@
u8 ath9k_parse_mpdudensity(u8 mpdudensity)
{
@@ -650,6 +652,7 @@ void ath_reset_work(struct work_struct *
@@ -648,6 +650,7 @@ void ath_reset_work(struct work_struct *
static int ath9k_start(struct ieee80211_hw *hw)
{
struct ath_softc *sc = hw->priv;
@ -351,7 +351,7 @@
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan;
@@ -728,6 +731,11 @@ static int ath9k_start(struct ieee80211_
@@ -726,6 +729,11 @@ static int ath9k_start(struct ieee80211_
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
}