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Runtime PM support for wlcore

PATCH In review Tony Lindgren 3 participants 21 messages May 29, 2018 – Jun 15, 2018 11 messages not in the archive

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#0 lore raw

cover Runtime PM support for wlcore

Hi all,

Here's the third version of wlcore runtime PM changes. Things seem to be working for me just fine now after few fixes listed below. Please do test again though, and then I'll post this series and one more patch after v4.18-rc1 to enable runtime PM autosuspend support. So hopefully we can have these merged early on for v4.19.

For testing, please make sure you have also applied patch "[PATCHv2] wlcore: sdio: Fix flakey SDIO runtime PM handling" to avoid bogus errors.

Regards,

Tony

Changes since v2:

- Add fix "wclore: Fix timout errors after recovery" that is not needed before runtime PM conversion

- Add fix from Eyal for "wlcore: Use generic runtime pm calls for wowlan elp configuration" that is also not needed before runtime PM conversion

- Return early from wlcore_runtime_resume() on ELP timeout to avoid clearing WL1271_FLAG_IN_ELP bit

- Tag as RFT as we still need to do more testing and add runtime PM autosuspend support before merging

- Drop "wlcore: sdio: Warn about runtime PM suspend errors" that should no longer be needed

Changes since v1:

- Fix issues reported by Eyal for recovery

- Add few patches for enable/disable issues found when using runtime PM

- Remove unused ps.h includes

Eyal Reizer (1):
wlcore: Use generic runtime pm calls for wowlan elp configuration

Tony Lindgren (5):
wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()
wlcore: Make sure PM calls are paired
wlcore: Add support for runtime PM
wlcore: Fix misplaced PM call for scan_complete_work()
wclore: Fix timout errors after recovery

 drivers/net/wireless/ti/wl18xx/debugfs.c    |  26 +-
 drivers/net/wireless/ti/wlcore/acx.c        |   1 -
 drivers/net/wireless/ti/wlcore/cmd.c        |   9 +
 drivers/net/wireless/ti/wlcore/debugfs.c    |  79 ++--
 drivers/net/wireless/ti/wlcore/main.c       | 464 +++++++++++++-------
 drivers/net/wireless/ti/wlcore/ps.c         | 146 ------
 drivers/net/wireless/ti/wlcore/ps.h         |   3 -
 drivers/net/wireless/ti/wlcore/scan.c       |  12 +-
 drivers/net/wireless/ti/wlcore/sysfs.c      |  12 +-
 drivers/net/wireless/ti/wlcore/testmode.c   |  18 +-
 drivers/net/wireless/ti/wlcore/tx.c         |   9 +-
 drivers/net/wireless/ti/wlcore/vendor_cmd.c |  27 +-
 drivers/net/wireless/ti/wlcore/wlcore.h     |   1 -
 drivers/net/wireless/ti/wlcore/wlcore_i.h   |   1 -
 14 files changed, 436 insertions(+), 372 deletions(-)
Signature · 1 line
2.17.0

A message that is not in the archive (sent off-list or not yet received): 20180529180605.73622-1-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org

#2 lore raw

PATCH 1/6 wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()

Otherwise we can get:

WARNING: CPU: 0 PID: 55 at drivers/net/wireless/ti/wlcore/io.h:84

I've only seen this few times with the runtime PM patches enabled so this one is probably not needed before that. This seems to work currently based on the current PM implementation timer. Let's apply this separately though in case others are hitting this issue.

---
 drivers/net/wireless/ti/wlcore/cmd.c | 6 ++++++
 1 file changed, 6 insertions(+)
drivers/net/wireless/ti/wlcore/cmd.c +6 -0
@@ -35,6 +35,7 @@
 #include "wl12xx_80211.h"
 #include "cmd.h"
 #include "event.h"
+#include "ps.h"
 #include "tx.h"
 #include "hw_ops.h"
 
@@ -191,6 +192,10 @@ int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 
 	timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 
+	ret = wl1271_ps_elp_wakeup(wl);
+	if (ret < 0)
+		return ret;
+
 	do {
 		if (time_after(jiffies, timeout_time)) {
 			wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
@@ -222,6 +227,7 @@ int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 	} while (!event);
 
 out:
+	wl1271_ps_elp_sleep(wl);
 	kfree(events_vector);
 	return ret;
 }
Signature · 1 line
2.17.0

A message that is not in the archive (sent off-list or not yet received): 20180529180605.73622-2-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org

#4 lore raw

[RFT 7/6] wlcore: Make sure firmware is initialized in wl1271_op_add_interface()

We have wl12xx_boot() call wl12xx_enable_interrupts() and if we have wl1271_op_add_interface() call pm_runtime_get_sync() before the interrupts are enabled. And then we get the following error during boot:

wlcore: ERROR ELP wakeup timeout!

Let's fix this by first checking if we need to boot the firmware. And only after that call pm_runtime_get_sync() when interrupts are enabled. And only after that do the check for wl12xx_need_fw_change().

---

Here's one more patch to test for this series.

---
 drivers/net/wireless/ti/wlcore/main.c | 31 ++++++++++++++++-----------
 1 file changed, 18 insertions(+), 13 deletions(-)
drivers/net/wireless/ti/wlcore/main.c +18 -13
@@ -2537,11 +2537,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	wl12xx_get_vif_count(hw, vif, &vif_count);
 
 	mutex_lock(&wl->mutex);
-	ret = pm_runtime_get_sync(wl->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(wl->dev);
-		goto out_unlock;
-	}
 
 	/*
 	 * in some very corner case HW recovery scenarios its possible to
@@ -2570,14 +2565,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	if (ret < 0)
 		goto out;
 
-	if (wl12xx_need_fw_change(wl, vif_count, true)) {
-		wl12xx_force_active_psm(wl);
-		set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
-		mutex_unlock(&wl->mutex);
-		wl1271_recovery_work(&wl->recovery_work);
-		return 0;
-	}
-
 	/*
 	 * TODO: after the nvs issue will be solved, move this block
 	 * to start(), and make sure here the driver is ON.
@@ -2594,6 +2581,24 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 			goto out;
 	}
 
+	/*
+	 * Call runtime PM only after possible wl12xx_init_fw() above
+	 * is done. Otherwise we do not have interrupts enabled.
+	 */
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
+		goto out_unlock;
+	}
+
+	if (wl12xx_need_fw_change(wl, vif_count, true)) {
+		wl12xx_force_active_psm(wl);
+		set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
+		mutex_unlock(&wl->mutex);
+		wl1271_recovery_work(&wl->recovery_work);
+		return 0;
+	}
+
 	if (!wlcore_is_p2p_mgmt(wlvif)) {
 		ret = wl12xx_cmd_role_enable(wl, vif->addr,
 					     role_type, &wlvif->role_id);
Signature · 1 line
2.17.0
#5 lore raw

PATCH 2/6 wlcore: Make sure PM calls are paired

In reply to a message not in the archive

The call to wl1271_ps_elp_wakeup() in wl12xx_queue_recovery_work() is unpaired. Let's remove it and add paired calls to wl1271_recovery_work() instead in preparation for changing things to use runtime PM.

---
 drivers/net/wireless/ti/wlcore/main.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
drivers/net/wireless/ti/wlcore/main.c +8 -2
@@ -796,8 +796,6 @@ void wl12xx_queue_recovery_work(struct wl1271 *wl)
 
 		wl->state = WLCORE_STATE_RESTARTING;
 		set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
-		wl1271_ps_elp_wakeup(wl);
-		wlcore_disable_interrupts_nosync(wl);
 		ieee80211_queue_work(wl->hw, &wl->recovery_work);
 	}
 }
@@ -919,12 +917,18 @@ static void wl1271_recovery_work(struct work_struct *work)
 		container_of(work, struct wl1271, recovery_work);
 	struct wl12xx_vif *wlvif;
 	struct ieee80211_vif *vif;
+	int error;
 
 	mutex_lock(&wl->mutex);
 
 	if (wl->state == WLCORE_STATE_OFF || wl->plt)
 		goto out_unlock;
 
+	error = wl1271_ps_elp_wakeup(wl);
+	if (error < 0)
+		wl1271_warning("Enable for recovery failed");
+	wlcore_disable_interrupts_nosync(wl);
+
 	if (!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags)) {
 		if (wl->conf.fwlog.output == WL12XX_FWLOG_OUTPUT_HOST)
 			wl12xx_read_fwlog_panic(wl);
@@ -967,6 +971,8 @@ static void wl1271_recovery_work(struct work_struct *work)
 	 */
 	wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
 
+	wl1271_ps_elp_sleep(wl);
+
 out_unlock:
 	wl->watchdog_recovery = false;
 	clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
Signature · 1 line
2.17.0
#6 lore raw

PATCH 3/6 wlcore: Add support for runtime PM

In reply to a message not in the archive

We can update wlcore to use PM runtime by adding functions for wlcore_runtime_suspend() and wlcore_runtime_resume() and replacing calls to wl1271_ps_elp_wakeup() and wl1271_ps_elp_sleep() with calls to pm_runtime_get_sync() and pm_runtime_put().

Note that the new wlcore_runtime_suspend() and wlcore_runtime_resume() functions are based on simplified versions of wl1271_ps_elp_sleep() and wl1271_ps_elp_wakeup().

We don't want to use the old functions as we can now take advantage of the runtime PM usage count. And we don't need the old elp_work at all. And we can also remove WL1271_FLAG_ELP_REQUESTED that is no longer needed.

Pretty much the only place where we are not just converting the existing functions is wl1271_op_suspend() where we add pm_runtime_put_noidle() to keep the calls paired.

As the next step is to implement runtime PM autosuspend, let's not add wrapper functions for the generic runtime PM calls. We would be getting rid of any wrapper functions anyways.

After autoidle we should be able to start using Linux generic wakeirqs for the padconf interrupt.

---
 drivers/net/wireless/ti/wl18xx/debugfs.c    |  26 +-
 drivers/net/wireless/ti/wlcore/acx.c        |   1 -
 drivers/net/wireless/ti/wlcore/cmd.c        |  11 +-
 drivers/net/wireless/ti/wlcore/debugfs.c    |  79 ++--
 drivers/net/wireless/ti/wlcore/main.c       | 410 ++++++++++++++------
 drivers/net/wireless/ti/wlcore/ps.c         | 146 -------
 drivers/net/wireless/ti/wlcore/ps.h         |   3 -
 drivers/net/wireless/ti/wlcore/scan.c       |  10 +-
 drivers/net/wireless/ti/wlcore/sysfs.c      |  12 +-
 drivers/net/wireless/ti/wlcore/testmode.c   |  18 +-
 drivers/net/wireless/ti/wlcore/tx.c         |   9 +-
 drivers/net/wireless/ti/wlcore/vendor_cmd.c |  27 +-
 drivers/net/wireless/ti/wlcore/wlcore.h     |   1 -
 drivers/net/wireless/ti/wlcore/wlcore_i.h   |   1 -
 14 files changed, 416 insertions(+), 338 deletions(-)
drivers/net/wireless/ti/wl18xx/debugfs.c +17 -9
@@ -20,6 +20,8 @@
  *
  */
 
+#include <linux/pm_runtime.h>
+
 #include "../wlcore/debugfs.h"
 #include "../wlcore/wlcore.h"
 #include "../wlcore/debug.h"
@@ -276,15 +278,17 @@ static ssize_t radar_detection_write(struct file *file,
 	if (unlikely(wl->state != WLCORE_STATE_ON))
 		goto out;
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wl18xx_cmd_radar_detection_debug(wl, channel);
 	if (ret < 0)
 		count = ret;
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -315,15 +319,17 @@ static ssize_t dynamic_fw_traces_write(struct file *file,
 	if (unlikely(wl->state != WLCORE_STATE_ON))
 		goto out;
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wl18xx_acx_dynamic_fw_traces(wl);
 	if (ret < 0)
 		count = ret;
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -374,9 +380,11 @@ static ssize_t radar_debug_mode_write(struct file *file,
 	if (unlikely(wl->state != WLCORE_STATE_ON))
 		goto out;
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	wl12xx_for_each_wlvif_ap(wl, wlvif) {
 		wlcore_cmd_generic_cfg(wl, wlvif,
@@ -384,7 +392,7 @@ static ssize_t radar_debug_mode_write(struct file *file,
 				       wl->radar_debug_mode, 0);
 	}
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
drivers/net/wireless/ti/wlcore/acx.c +0 -1
@@ -31,7 +31,6 @@
 #include "wlcore.h"
 #include "debug.h"
 #include "wl12xx_80211.h"
-#include "ps.h"
 #include "hw_ops.h"
 
 int wl1271_acx_wake_up_conditions(struct wl1271 *wl, struct wl12xx_vif *wlvif,
drivers/net/wireless/ti/wlcore/cmd.c +7 -4
@@ -23,6 +23,7 @@
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/spi/spi.h>
 #include <linux/etherdevice.h>
 #include <linux/ieee80211.h>
@@ -35,7 +36,6 @@
 #include "wl12xx_80211.h"
 #include "cmd.h"
 #include "event.h"
-#include "ps.h"
 #include "tx.h"
 #include "hw_ops.h"
 
@@ -192,9 +192,12 @@ int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 
 	timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
+
 		return ret;
+	}
 
 	do {
 		if (time_after(jiffies, timeout_time)) {
@@ -227,7 +230,7 @@ int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 	} while (!event);
 
 out:
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 	kfree(events_vector);
 	return ret;
 }
drivers/net/wireless/ti/wlcore/debugfs.c +49 -30

221 lines not on this page · raw message

drivers/net/wireless/ti/wlcore/main.c +295 -115

949 lines not on this page · raw message

drivers/net/wireless/ti/wlcore/ps.c +0 -146

152 lines not on this page · raw message

drivers/net/wireless/ti/wlcore/ps.h +0 -3
@@ -29,9 +29,6 @@
 
 int wl1271_ps_set_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 		       enum wl1271_cmd_ps_mode mode);
-void wl1271_ps_elp_sleep(struct wl1271 *wl);
-int wl1271_ps_elp_wakeup(struct wl1271 *wl);
-void wl1271_elp_work(struct work_struct *work);
 void wl12xx_ps_link_start(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 			  u8 hlid, bool clean_queues);
 void wl12xx_ps_link_end(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid);
drivers/net/wireless/ti/wlcore/scan.c +6 -4
@@ -22,13 +22,13 @@
  */
 
 #include <linux/ieee80211.h>
+#include <linux/pm_runtime.h>
 
 #include "wlcore.h"
 #include "debug.h"
 #include "cmd.h"
 #include "scan.h"
 #include "acx.h"
-#include "ps.h"
 #include "tx.h"
 
 void wl1271_scan_complete_work(struct work_struct *work)
@@ -67,16 +67,18 @@ void wl1271_scan_complete_work(struct work_struct *work)
 	wl->scan.req = NULL;
 	wl->scan_wlvif = NULL;
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
 		/* restore hardware connection monitoring template */
 		wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
 	}
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 
 	if (wl->scan.failed) {
 		wl1271_info("Scan completed due to error.");
drivers/net/wireless/ti/wlcore/sysfs.c +8 -4
@@ -19,9 +19,11 @@
  *
  */
 
+#include <linux/pm_runtime.h>
+
+#include "acx.h"
 #include "wlcore.h"
 #include "debug.h"
-#include "ps.h"
 #include "sysfs.h"
 
 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
@@ -68,12 +70,14 @@ static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
 	if (unlikely(wl->state != WLCORE_STATE_ON))
 		goto out;
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	wl1271_acx_sg_enable(wl, wl->sg_enabled);
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 
  out:
 	mutex_unlock(&wl->mutex);
drivers/net/wireless/ti/wlcore/testmode.c +11 -7
@@ -22,13 +22,13 @@
  */
 #include "testmode.h"
 
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <net/genetlink.h>
 
 #include "wlcore.h"
 #include "debug.h"
 #include "acx.h"
-#include "ps.h"
 #include "io.h"
 
 #define WL1271_TM_MAX_DATA_LENGTH 1024
@@ -97,9 +97,11 @@ static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[])
 		goto out;
 	}
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wl1271_cmd_test(wl, buf, buf_len, answer);
 	if (ret < 0) {
@@ -141,7 +143,7 @@ static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[])
 	}
 
 out_sleep:
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -169,9 +171,11 @@ static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[])
 		goto out;
 	}
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 	if (!cmd) {
@@ -205,7 +209,7 @@ static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[])
 out_free:
 	kfree(cmd);
 out_sleep:
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
drivers/net/wireless/ti/wlcore/tx.c +6 -3
@@ -24,6 +24,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/etherdevice.h>
+#include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 
 #include "wlcore.h"
@@ -868,9 +869,11 @@ void wl1271_tx_work(struct work_struct *work)
 	int ret;
 
 	mutex_lock(&wl->mutex);
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wlcore_tx_work_locked(wl);
 	if (ret < 0) {
@@ -878,7 +881,7 @@ void wl1271_tx_work(struct work_struct *work)
 		goto out;
 	}
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 }
drivers/net/wireless/ti/wlcore/vendor_cmd.c +17 -10
@@ -8,12 +8,13 @@
  * version 2 as published by the Free Software Foundation.
  */
 
+#include <linux/pm_runtime.h>
+
 #include <net/mac80211.h>
 #include <net/netlink.h>
 
 #include "wlcore.h"
 #include "debug.h"
-#include "ps.h"
 #include "hw_ops.h"
 #include "vendor_cmd.h"
 
@@ -55,14 +56,16 @@ wlcore_vendor_cmd_smart_config_start(struct wiphy *wiphy,
 		goto out;
 	}
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wlcore_smart_config_start(wl,
 			nla_get_u32(tb[WLCORE_VENDOR_ATTR_GROUP_ID]));
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -87,13 +90,15 @@ wlcore_vendor_cmd_smart_config_stop(struct wiphy *wiphy,
 		goto out;
 	}
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wlcore_smart_config_stop(wl);
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -131,16 +136,18 @@ wlcore_vendor_cmd_smart_config_set_group_key(struct wiphy *wiphy,
 		goto out;
 	}
 
-	ret = wl1271_ps_elp_wakeup(wl);
-	if (ret < 0)
+	ret = pm_runtime_get_sync(wl->dev);
+	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		goto out;
+	}
 
 	ret = wlcore_smart_config_set_group_key(wl,
 			nla_get_u32(tb[WLCORE_VENDOR_ATTR_GROUP_ID]),
 			nla_len(tb[WLCORE_VENDOR_ATTR_GROUP_KEY]),
 			nla_data(tb[WLCORE_VENDOR_ATTR_GROUP_KEY]));
 
-	wl1271_ps_elp_sleep(wl);
+	pm_runtime_put(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
drivers/net/wireless/ti/wlcore/wlcore.h +0 -1
@@ -348,7 +348,6 @@ struct wl1271 {
 	enum nl80211_band band;
 
 	struct completion *elp_compl;
-	struct delayed_work elp_work;
 
 	/* in dBm */
 	int power_level;
drivers/net/wireless/ti/wlcore/wlcore_i.h +0 -1
@@ -233,7 +233,6 @@ enum wl12xx_flags {
 	WL1271_FLAG_TX_QUEUE_STOPPED,
 	WL1271_FLAG_TX_PENDING,
 	WL1271_FLAG_IN_ELP,
-	WL1271_FLAG_ELP_REQUESTED,
 	WL1271_FLAG_IRQ_RUNNING,
 	WL1271_FLAG_FW_TX_BUSY,
 	WL1271_FLAG_DUMMY_PACKET_PENDING,
Signature · 1 line
2.17.0

A message that is not in the archive (sent off-list or not yet received): 20180529180605.73622-4-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org

#8 lore raw

Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 2 lines · Tony Lindgren
drivers/net/wireless/ti/wlcore/main.c +0 -0

...

Quoted 27 lines
drivers/net/wireless/ti/wlcore/main.c +27 -0
+static int __maybe_unused wlcore_runtime_resume(struct device *dev)
+{
+	struct wl1271 *wl = dev_get_drvdata(dev);
+	DECLARE_COMPLETION_ONSTACK(compl);
+	unsigned long flags;
+	int ret;
+	unsigned long start_time = jiffies;
+	bool pending = false;
+
+	/* Nothing to do if no ELP mode requested */
+	if (!test_bit(WL1271_FLAG_IN_ELP, &wl->flags))
+		return 0;
+
+	wl1271_debug(DEBUG_PSM, "waking up chip from elp");
+
+	spin_lock_irqsave(&wl->wl_lock, flags);
+	if (test_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
+		pending = true;
+	else
+		wl->elp_compl = &compl;
+	spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+	ret = wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
+	if (ret < 0) {
+		wl12xx_queue_recovery_work(wl);
+		goto err;
+	}

drivers/net/wireless/ti/wlcore/main.c static void wlcore_nvs_cb(const struct firmware *fw, void *context) · line 6726

Quoted 10 lines
drivers/net/wireless/ti/wlcore/main.c +10 -0
+
+	if (!pending) {
+		ret = wait_for_completion_timeout(&compl,
+			msecs_to_jiffies(WL1271_WAKEUP_TIMEOUT));
+		if (ret == 0) {
+			wl1271_error("ELP wakeup timeout!");
+			wl12xx_queue_recovery_work(wl);
+
+			/* Return no error for runtime PM for recovery */
+			return 0;

I noticed returning here and not clearing WL1271_FLAG_IN_ELP can produce errors. But I think it's unsafe to clear WL1271_FLAG_IN_ELP if wlcore did not wake. So I suggest we return early here to see the errors so we can fix the issues. I'll post one more patch that fixes the init time "ELP wakeup timeout!" issues for me.

Regards,

Tony

A message that is not in the archive (sent off-list or not yet received): [email protected]

#10 lore raw

RE: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 41 lines · Tony Lindgren
Quoted 2 lines
drivers/net/wireless/ti/wlcore/main.c +0 -0

...

Quoted 13 lines
drivers/net/wireless/ti/wlcore/main.c +13 -0
+static int __maybe_unused wlcore_runtime_resume(struct device *dev)
+{
+	struct wl1271 *wl = dev_get_drvdata(dev);
+	DECLARE_COMPLETION_ONSTACK(compl);
+	unsigned long flags;
+	int ret;
+	unsigned long start_time = jiffies;
+	bool pending = false;
+
+	/* Nothing to do if no ELP mode requested */
+	if (!test_bit(WL1271_FLAG_IN_ELP, &wl->flags))
+		return 0;
+

drivers/net/wireless/ti/wlcore/main.c static void wlcore_nvs_cb(const struct firmware *fw, void *context)

Quoted 10 lines
drivers/net/wireless/ti/wlcore/main.c +10 -0
+	wl1271_debug(DEBUG_PSM, "waking up chip from elp");
+
+	spin_lock_irqsave(&wl->wl_lock, flags);
+	if (test_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
+		pending = true;
+	else
+		wl->elp_compl = &compl;
+	spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+	ret = wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG,

ELPCTRL_WAKE_UP);

Quoted 12 lines
drivers/net/wireless/ti/wlcore/main.c +12 -0
+	if (ret < 0) {
+		wl12xx_queue_recovery_work(wl);
+		goto err;
+	}
+
+	if (!pending) {
+		ret = wait_for_completion_timeout(&compl,
+			msecs_to_jiffies(WL1271_WAKEUP_TIMEOUT));
+		if (ret == 0) {
+			wl1271_error("ELP wakeup timeout!");
+			wl12xx_queue_recovery_work(wl);
+
Quoted 9 lines

drivers/net/wireless/ti/wlcore/main.c

Quoted 2 lines
drivers/net/wireless/ti/wlcore/main.c +2 -0
+			/* Return no error for runtime PM for recovery */
+			return 0;

I noticed returning here and not clearing WL1271_FLAG_IN_ELP can produce errors. But I think it's unsafe to clear WL1271_FLAG_IN_ELP if wlcore did not wake. So I suggest we return early here to see the errors so we can fix the issues. I'll post one more patch that fixes the init time "ELP wakeup timeout!" issues for me.

I have noticed the following recovery a couple of times on my setup when the board was just sitting for a long time with just pings
It starts with a firmware recovery started from the interrupt handler but the recovery fails leaving the sdio stuck.
At this stage the only way to get out of it is unload/load of the driver modules. Have you seen this on your side as well?

64 bytes from 192.168.100.1: seq=32772 ttl=64 time=9.644 ms 64 bytes from 192.168.100.1: seq=32773 ttl=64 time=9.572 ms 64 bytes from 192.168.100.1: seq=32774 ttl=64 time=10.974 ms 64 bytes from 192.168.100.1: seq=32775 ttl=64 time=9.618 ms

[127899.040526] wlcore: ERROR SW watchdog interrupt received! starting recovery.
[127899.047922] ------------[ cut here ]------------
[127899.053009] WARNING: CPU: 0 PID: 20135 at drivers/net/wireless/ti/wlcore/main.c:806 wl12xx_queue_recovery_work+0x64/0x6c [wlcore]
[127899.064899] Modules linked in: wlcore_sdio wl18xx wlcore mac80211 cfg80211 ctr aes_arm_bs crypto_simd cryptd ccm usb_f_acm u_serial arc4 pru_rproc pruss_intc usb_f_ecm pruss musb_dsps musb_hdrc phy_am335x usbcore phy_generic phy_am335x_control xfrm_user xfrm4_tunnel ipcomp xfrm_ipcomp esp4 ah4 g_multi usb_f_mass_storage usb_f_rndis af_key u_ether xfrm_algo libcomposite udc_core usb_common bluetooth ecdh_generic snd_soc_simple_card snd_soc_simple_card_utils pm33xx wkup_m3_rproc wkup_m3_ipc remoteproc omap_aes_driver crypto_engine omap_crypto omap_sham ti_emif_sram pruss_soc_bus musb_am335x rtc_omap omap_wdt sch_fq_codel [last unloaded: cfg80211]
[127899.122874] CPU: 0 PID: 20135 Comm: irq/65-wl18xx Tainted: G        W       4.14.40-01413-g9541ff6-dirty #107
[127899.132988] Hardware name: Generic AM33XX (Flattened Device Tree)
[127899.139247] Backtrace:
[127899.141866] [<c010baf8>] (dump_backtrace) from [<c010bd5c>] (show_stack+0x18/0x1c)
[127899.149636]  r6:00000000 r5:bf4e25fc r4:00000000 r3:00000000
[127899.155493] [<c010bd44>] (show_stack) from [<c0805dd0>] (dump_stack+0x20/0x28)
[127899.162876] [<c0805db0>] (dump_stack) from [<c01287bc>] (__warn+0xdc/0x104)
[127899.170032] [<c01286e0>] (__warn) from [<c012880c>] (warn_slowpath_null+0x28/0x30)
[127899.177795]  r10:c0d4ea79 r8:c0169590 r7:db276658 r6:d6abaec8 r5:d6abad38 r4:d6abad00
[127899.185989] [<c01287e4>] (warn_slowpath_null) from [<bf4cd4d0>] (wl12xx_queue_recovery_work+0x64/0x6c [wlcore])
[127899.196605] [<bf4cd46c>] (wl12xx_queue_recovery_work [wlcore]) from [<bf4cda80>] (wlcore_irq+0x21c/0x234 [wlcore])
[127899.207161]  r4:d6abad00 r3:00000001
[127899.211036] [<bf4cd864>] (wlcore_irq [wlcore]) from [<c01695b4>] (irq_thread_fn+0x24/0x3c)
[127899.219498]  r7:db276658 r6:db276600 r5:00000001 r4:d6818ec0
[127899.225341] [<c0169590>] (irq_thread_fn) from [<c0169260>] (irq_thread+0x10c/0x1ec)
[127899.233143]  r6:db276600 r5:00000001 r4:d6818ec0 r3:db361200
[127899.238997] [<c0169154>] (irq_thread) from [<c014526c>] (kthread+0x11c/0x154)
[127899.246324]  r10:c0169154 r8:d6818ec0 r7:d6818bd8 r6:d6818b80 r5:00000000 r4:d6818bc0
[127899.254313] [<c0145150>] (kthread) from [<c0107f68>] (ret_from_fork+0x14/0x2c)
[127899.261724]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0145150
[127899.269728]  r4:d6818b80 r3:ffffffff
[127899.273422] ---[ end trace 5ef4c2e6abb6b669 ]---
[127899.285612] wlcore: Hardware recovery in progress. FW ver: Rev 8.9.0.6.76
[127899.303137] wlcore: pc: 0xba1c, hint_sts: 0x00000000 count: 1
[127899.315757] wlcore: down
[127899.318420] wlcore: down
[127899.326230] ieee80211 phy0: Hardware restart was requested
[127901.063547] ------------[ cut here ]------------
[127901.068548] WARNING: CPU: 0 PID: 26417 at drivers/net/wireless/ti/wlcore/sdio.c:145 wl12xx_sdio_raw_write+0xb4/0x138 [wlcore_sdio]
[127901.085327] Modules linked in: wlcore_sdio wl18xx wlcore mac80211 cfg80211 ctr aes_arm_bs crypto_simd cryptd ccm usb_f_acm u_serial arc4 pru_rproc pruss_intc usb_f_ecm pruss musb_dsps musb_hdrc phy_am335x usbcore phy_generic phy_am335x_control xfrm_user xfrm4_tunnel ipcomp xfrm_ipcomp esp4 ah4 g_multi usb_f_mass_storage usb_f_rndis af_key u_ether xfrm_algo libcomposite udc_core usb_common bluetooth ecdh_generic snd_soc_simple_card snd_soc_simple_card_utils pm33xx wkup_m3_rproc wkup_m3_ipc remoteproc omap_aes_driver crypto_engine omap_crypto omap_sham ti_emif_sram pruss_soc_bus musb_am335x rtc_omap omap_wdt sch_fq_codel [last unloaded: cfg80211]
[127901.160115] CPU: 0 PID: 26417 Comm: kworker/0:4 Tainted: G        W       4.14.40-01413-g9541ff6-dirty #107
[127901.174489] Hardware name: Generic AM33XX (Flattened Device Tree)
[127901.185357] Workqueue: events_freezable ieee80211_restart_work [mac80211]
[127901.192628] Backtrace:
[127901.200496] [<c010baf8>] (dump_backtrace) from [<c010bd5c>] (show_stack+0x18/0x1c)
[127901.214303]  r6:00000000 r5:bf073ad8 r4:00000000 r3:00000000
[127901.224251] [<c010bd44>] (show_stack) from [<c0805dd0>] (dump_stack+0x20/0x28)
[127901.236220] [<c0805db0>] (dump_stack) from [<c01287bc>] (__warn+0xdc/0x104)
[127901.243355] [<c01286e0>] (__warn) from [<c012880c>] (warn_slowpath_null+0x28/0x30)
[127901.255388]  r10:00000000 r8:00004000 r7:d6838000 r6:db259c10 r5:00000000 r4:dc58ca00
[127901.270249] [<c01287e4>] (warn_slowpath_null) from [<bf0722fc>] (wl12xx_sdio_raw_write+0xb4/0x138 [wlcore_sdio])
[127901.284893] [<bf072248>] (wl12xx_sdio_raw_write [wlcore_sdio]) from [<bf4db23c>] (wlcore_boot_upload_firmware+0x1f0/0x444 [wlcore])
[127901.301116]  r10:e221f65c r8:d6838000 r7:bf4e9c40 r6:00014000 r5:00000000 r4:80900000
[127901.313657] [<bf4db04c>] (wlcore_boot_upload_firmware [wlcore]) from [<bf37205c>] (wl18xx_boot+0x974/0xd14 [wl18xx])
[127901.328804]  r10:00000000 r9:00000003 r8:db6b6bc8 r7:c0b134fc r6:bf4e9c40 r5:00000000
[127901.341001]  r4:d6abad00
[127901.344099] [<bf3716e8>] (wl18xx_boot [wl18xx]) from [<bf4cd18c>] (wl1271_op_add_interface+0x670/0x950 [wlcore])
[127901.359852]  r10:00000000 r8:db6b6bc8 r7:bf4e9c40 r6:d6abad38 r5:d6abad00 r4:00000000
[127901.374898] [<bf4ccb1c>] (wl1271_op_add_interface [wlcore]) from [<bf45cfe0>] (drv_add_interface+0x34/0x80 [mac80211])
[127901.390201]  r10:d6abaa00 r9:c0d0ea60 r8:00000000 r7:d6aba420 r6:d6aba420 r5:db6b64e0
[127901.402221]  r4:db6b64e0
[127901.406026] [<bf45cfac>] (drv_add_interface [mac80211]) from [<bf48bfe8>] (ieee80211_reconfig+0x164/0xc0c [mac80211])
[127901.425079]  r4:d6aba420 r3:00000001
[127901.433671] [<bf48be84>] (ieee80211_reconfig [mac80211]) from [<bf45b354>] (ieee80211_restart_work+0x90/0xbc [mac80211])
[127901.449257]  r10:00000000 r9:c0d0ea60 r8:00000000 r7:d6aba420 r6:d6aba420 r5:d6abaa00
[127901.461411]  r4:d6abaa00
[127901.464785] [<bf45b2c4>] (ieee80211_restart_work [mac80211]) from [<c013f128>] (process_one_work+0x12c/0x374)
[127901.480386]  r7:dcb39400 r6:c0d0ea60 r5:d6abac28 r4:db74e600
[127901.492467] [<c013effc>] (process_one_work) from [<c013f570>] (worker_thread+0x1c0/0x5b8)
[127901.504786]  r10:00000008 r9:c0d0ea60 r8:c0d16380 r7:db74e618 r6:c0d0ea74 r5:c0d0ea60
[127901.517204]  r4:db74e600
[127901.519918] [<c013f3b0>] (worker_thread) from [<c014526c>] (kthread+0x11c/0x154)
[127901.532463]  r10:c013f3b0 r9:d68fdeb4 r8:db74e600 r7:db4b2058 r6:db6ec4c0 r5:00000000
[127901.546911]  r4:db4b2040 r3:00000000
[127901.550678] [<c0145150>] (kthread) from [<c0107f68>] (ret_from_fork+0x14/0x2c)
[127901.562972]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0145150
[127901.577275]  r4:db6ec4c0 r3:ffffffff
[127901.580991] ---[ end trace 5ef4c2e6abb6b66a ]---
[127901.590827] wl1271_sdio mmc1:0001:2: sdio write failed (-110)
[127901.895777] ------------[ cut here ]------------
[127901.900624] WARNING: CPU: 0 PID: 26417 at drivers/net/wireless/ti/wlcore/sdio.c:145 wl12xx_sdio_raw_write+0xb4/0x138 [wlcore_sdio]
[127901.920440] Modules linked in: wlcore_sdio wl18xx wlcore mac80211 cfg80211 ctr aes_arm_bs crypto_simd cryptd ccm usb_f_acm u_serial arc4 pru_rproc pruss_intc usb_f_ecm pruss musb_dsps musb_hdrc phy_am335x usbcore phy_generic phy_am335x_

Best Regards,
Eyal

A message that is not in the archive (sent off-list or not yet received): [email protected]

#12 lore raw

Re: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 3 lines · Reizer, Eyal

I have noticed the following recovery a couple of times on my setup when the board was just sitting for a long time with just pings
It starts with a firmware recovery started from the interrupt handler but the recovery fails

Sounds like the recovery needs some more work :)

Quoted 3 lines

leaving the sdio stuck.
At this stage the only way to get out of it is unload/load of the driver modules. Have you seen this on your side as well?

Hmm I don't think I've seen this one yet.

Quoted 5 lines

64 bytes from 192.168.100.1: seq=32772 ttl=64 time=9.644 ms 64 bytes from 192.168.100.1: seq=32773 ttl=64 time=9.572 ms 64 bytes from 192.168.100.1: seq=32774 ttl=64 time=10.974 ms 64 bytes from 192.168.100.1: seq=32775 ttl=64 time=9.618 ms

[127899.040526] wlcore: ERROR SW watchdog interrupt received! starting recovery.

Do you know what does the SW watchdog means here? Does it mean the interrupt did not get delivered to wlcore? Or a spurious IRQ to wlcore? Or a timeout waiting for the ELP wake interrupt?

Regards,

Tony

A message that is not in the archive (sent off-list or not yet received): [email protected]

#14 lore raw

Re: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 19 lines · Tony Lindgren
Quoted 3 lines · Reizer, Eyal

I have noticed the following recovery a couple of times on my setup when the board was just sitting for a long time with just pings
It starts with a firmware recovery started from the interrupt handler but the recovery fails

Sounds like the recovery needs some more work :)

Quoted 3 lines

leaving the sdio stuck.
At this stage the only way to get out of it is unload/load of the driver modules. Have you seen this on your side as well?

Hmm I don't think I've seen this one yet.

Quoted 5 lines

64 bytes from 192.168.100.1: seq=32772 ttl=64 time=9.644 ms 64 bytes from 192.168.100.1: seq=32773 ttl=64 time=9.572 ms 64 bytes from 192.168.100.1: seq=32774 ttl=64 time=10.974 ms 64 bytes from 192.168.100.1: seq=32775 ttl=64 time=9.618 ms

[127899.040526] wlcore: ERROR SW watchdog interrupt received! starting recovery.
Quoted 3 lines

Do you know what does the SW watchdog means here? Does it mean the interrupt did not get delivered to wlcore? Or a spurious IRQ to wlcore? Or a timeout waiting for the ELP wake interrupt?

Also, can you check if patch "[RFT 7/6] wlcore: Make sure firmware is initialized in wl1271_op_add_interface()" already fixes this issue if you did not have it already applied?

Regards,

Tony

A message that is not in the archive (sent off-list or not yet received): [email protected]

#16 lore raw

RE: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 25 lines · Tony Lindgren
Quoted 2 lines · Reizer, Eyal
Quoted 1 line

I have noticed the following recovery a couple of times on my setup

when the board was

Quoted 2 lines
Quoted 2 lines

just sitting for a long time with just pings
It starts with a firmware recovery started from the interrupt handler but

the recovery fails

Quoted 5 lines

Sounds like the recovery needs some more work :)

Quoted 2 lines

leaving the sdio stuck.
At this stage the only way to get out of it is unload/load of the driver

modules.

Quoted 9 lines
Quoted 1 line

Have you seen this on your side as well?

Hmm I don't think I've seen this one yet.

Quoted 5 lines

64 bytes from 192.168.100.1: seq=32772 ttl=64 time=9.644 ms 64 bytes from 192.168.100.1: seq=32773 ttl=64 time=9.572 ms 64 bytes from 192.168.100.1: seq=32774 ttl=64 time=10.974 ms 64 bytes from 192.168.100.1: seq=32775 ttl=64 time=9.618 ms

[127899.040526] wlcore: ERROR SW watchdog interrupt received! starting

recovery.

Quoted 1 line
Quoted 9 lines
Quoted 3 lines

Do you know what does the SW watchdog means here? Does it mean the interrupt did not get delivered to wlcore? Or a spurious IRQ to wlcore? Or a timeout waiting for the ELP wake interrupt?

Also, can you check if patch "[RFT 7/6] wlcore: Make sure firmware is initialized
in wl1271_op_add_interface()" already fixes this issue if you did not have it already applied?

Sure will do. The firmware that showed this issue has some extra debugging info Enabled in it and this may have been the cause of the recovery (Infernal logging error). The fact that it didn't recover was the issue itself. I am now running with the latest's firmware 8.9.0.0.78 and will see if I can still replicate it.
If I see it, I will try applying patch 7 and see if it helps. Right now I don't yet have It applied.

Best Regard,
Eyal

#17 lore raw

RE: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

In reply to Tony Lindgren
Quoted 35 lines
Quoted 6 lines · Tony Lindgren
Quoted 2 lines · Reizer, Eyal
Quoted 1 line

I have noticed the following recovery a couple of times on my setup

when the board was

Quoted 2 lines
Quoted 2 lines

just sitting for a long time with just pings
It starts with a firmware recovery started from the interrupt handler

but

Quoted 16 lines

the recovery fails

Quoted 5 lines

Sounds like the recovery needs some more work :)

Quoted 2 lines

leaving the sdio stuck.
At this stage the only way to get out of it is unload/load of the driver

modules.

Quoted 9 lines
Quoted 1 line

Have you seen this on your side as well?

Hmm I don't think I've seen this one yet.

Quoted 5 lines

64 bytes from 192.168.100.1: seq=32772 ttl=64 time=9.644 ms 64 bytes from 192.168.100.1: seq=32773 ttl=64 time=9.572 ms 64 bytes from 192.168.100.1: seq=32774 ttl=64 time=10.974 ms 64 bytes from 192.168.100.1: seq=32775 ttl=64 time=9.618 ms

[127899.040526] wlcore: ERROR SW watchdog interrupt received!

starting

Quoted 11 lines

recovery.

Quoted 4 lines

Do you know what does the SW watchdog means here? Does it mean the interrupt did not get delivered to wlcore? Or a spurious IRQ to wlcore? Or a timeout waiting for the ELP wake interrupt?

Also, can you check if patch "[RFT 7/6] wlcore: Make sure firmware is initialized
in wl1271_op_add_interface()" already fixes this issue if you did not have it already applied?

Quoted 11 lines

Sure will do. The firmware that showed this issue has some extra debugging info
Enabled in it and this may have been the cause of the recovery (Infernal logging error).
The fact that it didn't recover was the issue itself. I am now running with the latest's
firmware 8.9.0.0.78 and will see if I can still replicate it.
If I see it, I will try applying patch 7 and see if it helps. Right now I don't yet have
It applied.

Latest wl18xx firmware was running fine for two days without the crash, so it was indeed just a logging issue in this case. However, trying a wl1281 module and enabling PLT mode it boots ok but after a couple of seconds the below crash is seen. Seems like a similar crash to the one I have seen before,right?
I do have patch 7/6 applied now.

sh-4.4# calibrator wlan0 plt power_mode on

[   57.198492] wlcore: power up
[   57.757871] wlcore: firmware booted in PLT mode PLT_ON (PLT 7.3.10.2.142)
sh-4.4#
sh-4.4#
sh-4.4# ca[   86.485020] ------------[ cut here ]------------
[   86.490334] WARNING: CPU: 0 PID: 502 at drivers/net/wireless/ti/wlcore/main.c:806 wl12xx_queue_recovery_work+0x64/0x6c [wlcore]
[   86.502047] Modules linked in: arc4 pru_rproc wl12xx pruss_intc wlcore mac80211 cfg80211 pruss ti_am335x_tsc ti_am335x_adc musb_dsps musb_hdrc udc_core usbcore phy_am335x phy_generic phy_am335x_control usb_common pm33xx wkup_m3_ipc snd_soc_simple_card snd_soc_simple_card_utils wkup_m3_rproc remoteproc omap_aes_driver crypto_engine omap_sham omap_crypto ti_emif_sram pruss_soc_bus snd_soc_tlv320aic3x wlcore_sdio matrix_keypad rtc_omap ti_am335x_tscadc omap_wdt matrix_keymap musb_am335x sch_fq_codel
[   86.546686] CPU: 0 PID: 502 Comm: irq/71-wl12xx Not tainted 4.14.40-01415-g47241db-dirty #119
[   86.555312] Hardware name: Generic AM33XX (Flattened Device Tree)
[   86.561540] Backtrace:
[   86.564119] [<c010baf8>] (dump_backtrace) from [<c010bd5c>] (show_stack+0x18/0x1c)
[   86.571838]  r6:00000000 r5:bf30a5fc r4:00000000 r3:00000000
[   86.577661] [<c010bd44>] (show_stack) from [<c0805dd0>] (dump_stack+0x20/0x28)
[   86.584994] [<c0805db0>] (dump_stack) from [<c01287bc>] (__warn+0xdc/0x104)
[   86.592121] [<c01286e0>] (__warn) from [<c012880c>] (warn_slowpath_null+0x28/0x30)
[   86.599838]  r10:c0d4ea79 r8:c0169590 r7:db0f1558 r6:dc716ec8 r5:dc716d38 r4:dc716d00
[   86.608019] [<c01287e4>] (warn_slowpath_null) from [<bf2f5468>] (wl12xx_queue_recovery_work+0x64/0x6c [wlcore])
[   86.618630] [<bf2f5404>] (wl12xx_queue_recovery_work [wlcore]) from [<bf2f5a18>] (wlcore_irq+0x21c/0x234 [wlcore])
[   86.629157]  r4:dc716d00 r3:db164010
[   86.633009] [<bf2f57fc>] (wlcore_irq [wlcore]) from [<c01695b4>] (irq_thread_fn+0x24/0x3c)
[   86.641441]  r7:db0f1558 r6:db0f1500 r5:00000001 r4:db1b8680
[   86.647236] [<c0169590>] (irq_thread_fn) from [<c0169260>] (irq_thread+0x10c/0x1ec)
[   86.655044]  r6:db0f1500 r5:00000001 r4:db1b8680 r3:db623600
[   86.660875] [<c0169154>] (irq_thread) from [<c014526c>] (kthread+0x11c/0x154)
[   86.668148]  r10:c0169154 r8:db1b8680 r7:db1b8958 r6:db1b8600 r5:00000000 r4:db1b8940
[   86.676104] [<c0145150>] (kthread) from [<c0107f68>] (ret_from_fork+0x14/0x2c)
[   86.683479]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0145150
[   86.691451]  r4:db1b8600 r3:ffffffff
[   86.695099] ---[ end trace dea7def5777109c9 ]---

BR,
Eyal

A message that is not in the archive (sent off-list or not yet received): [email protected]

#19 lore raw

Re: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Hi,

Quoted 1 line · Reizer, Eyal

Latest wl18xx firmware was running fine for two days without the crash, so it was indeed just a logging issue in this case.

OK good to hear.

Quoted 2 lines

However, trying a wl1281 module and enabling PLT mode it boots ok but after a couple of seconds the below crash is seen. Seems like a similar crash to the one I have seen before,right?

Sorry for the delay, only today had enough time to figure this one out, see below.

Quoted 7 lines

sh-4.4# calibrator wlan0 plt power_mode on

[   57.198492] wlcore: power up
[   57.757871] wlcore: firmware booted in PLT mode PLT_ON (PLT 7.3.10.2.142)
sh-4.4#
sh-4.4#
sh-4.4# ca[   86.485020] ------------[ cut here ]------------
[   86.490334] WARNING: CPU: 0 PID: 502 at drivers/net/wireless/ti/wlcore/main.c:806

This happens on runtime_suspend() where we are already in PLT and then that error gets stored and then next pm_runtime_get() returns -EINVAL. The patch below should fix it. I'll fold it into the runtime PM related patch assuming it works for you.

Regards,

Tony

8< -------

drivers/net/wireless/ti/wlcore/main.c +1 -1
@@ -6677,7 +6677,7 @@ static int __maybe_unused wlcore_runtime_suspend(struct device *dev)
 
 	/* We do not enter elp sleep in PLT mode */
 	if (wl->plt)
-		return -EINVAL;
+		return 0;
 
 	/* Nothing to do if no ELP mode requested */
 	if (wl->sleep_auth != WL1271_PSM_ELP)
#20 lore raw

RE: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

In reply to Tony Lindgren
Quoted 14 lines
Quoted 2 lines

However, trying a wl1281 module and enabling PLT mode it boots ok but after a couple of seconds the below crash is seen. Seems like a similar crash to the one I have seen before,right?

Sorry for the delay, only today had enough time to figure this one out, see below.

Quoted 7 lines

sh-4.4# calibrator wlan0 plt power_mode on

[   57.198492] wlcore: power up
[   57.757871] wlcore: firmware booted in PLT mode PLT_ON (PLT 7.3.10.2.142)
sh-4.4#
sh-4.4#
sh-4.4# ca[   86.485020] ------------[ cut here ]------------
[   86.490334] WARNING: CPU: 0 PID: 502 at drivers/net/wireless/ti/wlcore/main.c:806
Quoted 3 lines

This happens on runtime_suspend() where we are already in PLT and then that error gets stored and then next pm_runtime_get() returns -EINVAL. The patch below should fix it. I'll fold it

i>nto the runtime PM related patch assuming it works for you.

Quoted 10 lines

Regards,

Tony

8< -------

drivers/net/wireless/ti/wlcore/main.c static int __maybe_unused wlcore_runtime_suspend(struct device *dev) · line 6683

Quoted 8 lines
drivers/net/wireless/ti/wlcore/main.c +1 -1
@@ -6677,7 +6677,7 @@ static int __maybe_unused wlcore_runtime_suspend(struct device *dev)
 
 	/* We do not enter elp sleep in PLT mode */
 	if (wl->plt)
-		return -EINVAL;
+		return 0;
 
 	/* Nothing to do if no ELP mode requested */
 	if (wl->sleep_auth != WL1271_PSM_ELP)

Even with this change I still see issues with a wl1281 module plugged in. It take a few seconds for the crash to happen once you turn plt on. Log below.
Do you see this on your wl12xx based platform?

sh-4.4#
sh-4.4# calibrator wlan0 plt power_mode on

[  231.105877] wlcore: power up
[  231.667604] wlcore: firmware booted in PLT mode PLT_ON (PLT 7.3.10.2.142)
sh-4.4#
sh-4.4#
sh-4.4# [  236.900817] ------------[ cut here ]------------
[  236.906012] WARNING: CPU: 0 PID: 520 at drivers/net/wireless/ti/wlcore/main.c:806 wl12xx_queue_recovery_work+0x64/0x6c [wlcore]
[  236.917783] Modules linked in: ctr aes_arm_bs crypto_simd cryptd ccm arc4 pru_rproc pruss_intc wl12xx wlcore mac80211 cfg80211 pruss musb_dsps musb_hdrc udc_core usbcore phy_am335x phy_generic usb_common phy_am335x_control ti_am335x_adc ti_am335x_tsc snd_soc_simple_card snd_soc_simple_card_utils pm33xx wkup_m3_ipc wkup_m3_rproc remoteproc omap_aes_driver crypto_engine omap_crypto omap_sham ti_emif_sram pruss_soc_bus wlcore_sdio snd_soc_tlv320aic3x rtc_omap musb_am335x omap_wdt ti_am335x_tscadc matrix_keypad matrix_keymap sch_fq_codel
[  236.965780] CPU: 0 PID: 520 Comm: irq/71-wl12xx Not tainted 4.14.40-01415-g47241db-dirty #123
[  236.974439] Hardware name: Generic AM33XX (Flattened Device Tree)
[  236.980666] Backtrace:
[  236.983250] [<c010baf8>] (dump_backtrace) from [<c010bd5c>] (show_stack+0x18/0x1c)
[  236.990967]  r6:00000000 r5:bf2e25fc r4:00000000 r3:00000000
[  236.996799] [<c010bd44>] (show_stack) from [<c0805dd0>] (dump_stack+0x20/0x28)
[  237.004145] [<c0805db0>] (dump_stack) from [<c01287bc>] (__warn+0xdc/0x104)
[  237.011339] [<c01286e0>] (__warn) from [<c012880c>] (warn_slowpath_null+0x28/0x30)
[  237.019099]  r10:c0d4ea79 r8:c0169590 r7:db1bee58 r6:dc726ec8 r5:dc726d38 r4:dc726d00
[  237.027285] [<c01287e4>] (warn_slowpath_null) from [<bf2cd468>] (wl12xx_queue_recovery_work+0x64/0x6c [wlcore])
[  237.037892] [<bf2cd404>] (wl12xx_queue_recovery_work [wlcore]) from [<bf2cda18>] (wlcore_irq+0x21c/0x234 [wlcore])
[  237.048412]  r4:dc726d00 r3:db2d3810
[  237.052260] [<bf2cd7fc>] (wlcore_irq [wlcore]) from [<c01695b4>] (irq_thread_fn+0x24/0x3c)
[  237.060688]  r7:db1bee58 r6:db1bee00 r5:00000001 r4:db1af3c0
[  237.066481] [<c0169590>] (irq_thread_fn) from [<c0169260>] (irq_thread+0x10c/0x1ec)
[  237.074242]  r6:db1bee00 r5:00000001 r4:db1af3c0 r3:dc73aa00
[  237.080069] [<c0169154>] (irq_thread) from [<c014526c>] (kthread+0x11c/0x154)
[  237.087350]  r10:c0169154 r8:db1af3c0 r7:db1af918 r6:db1af340 r5:00000000 r4:db1af900
[  237.095305] [<c0145150>] (kthread) from [<c0107f68>] (ret_from_fork+0x14/0x2c)
[  237.102673]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0145150
[  237.110646]  r4:db1af340 r3:ffffffff
[  237.114292] ---[ end trace 2c3213a5c8df86b0 ]---
[  237.856438] sched: RT throttling activated
[  238.886549] omap_i2c 44e0b000.i2c: controller timed out
[  242.846592] omap_i2c 44e0b000.i2c: controller timed out

BR,
Eyal

#21 lore raw

RE: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

In reply to Tony Lindgren
Quoted 32 lines
Quoted 3 lines

This happens on runtime_suspend() where we are already in PLT and then that error gets stored and then next pm_runtime_get() returns -EINVAL. The patch below should fix it. I'll fold it

i>nto the runtime PM related patch assuming it works for you.

Review

Quoted 7 lines

Regards,

Tony

8< -------

(quoted diff) +0 -0

b/drivers/net/wireless/ti/wlcore/main.c

drivers/net/wireless/ti/wlcore/main.c static int __maybe_unused

Quoted 3 lines
drivers/net/wireless/ti/wlcore/main.c +0 -0
@@ -6677,7 +6677,7 @@ static int __maybe_unused

wlcore_runtime_suspend(struct device *dev)

drivers/net/wireless/ti/wlcore/main.c static int __maybe_unused · line 6682

Quoted 8 lines
drivers/net/wireless/ti/wlcore/main.c +1 -1
 	/* We do not enter elp sleep in PLT mode */
 	if (wl->plt)
-		return -EINVAL;
+		return 0;
 
 	/* Nothing to do if no ELP mode requested */
 	if (wl->sleep_auth != WL1271_PSM_ELP)

Even with this change I still see issues with a wl1281 module plugged in. It take a few seconds for the crash to happen once you turn plt on. Log below.
Do you see this on your wl12xx based platform?

sh-4.4#
sh-4.4# calibrator wlan0 plt power_mode on

Quoted 8 lines
[  231.105877] wlcore: power up
[  231.667604] wlcore: firmware booted in PLT mode PLT_ON (PLT

7.3.10.2.142)
sh-4.4#
sh-4.4#
sh-4.4# [ 236.900817] ------------[ cut here ]------------

[  236.906012] WARNING: CPU: 0 PID: 520 at

drivers/net/wireless/ti/wlcore/main.c:806

Hold on, I might have edited the wrong version of the file (main.c). Sorry about that. Working on too many branches/boards... :(
Applied this change again and things look good now with the wl1281 based module.

Best Regards,
Eyal

A message that is not in the archive (sent off-list or not yet received): [email protected]

#23 lore raw

Re: [EXTERNAL] Re: [RFT 3/6] wlcore: Add support for runtime PM

Quoted 3 lines · Reizer, Eyal

Hold on, I might have edited the wrong version of the file (main.c). Sorry about that. Working on too many branches/boards... :(
Applied this change again and things look good now with the wl1281 based module.

Heh OK :) Sounds like time to post the whole series next week after -rc1 if no more issues.

Regards,

Tony

#24 lore raw

PATCH 4/6 wlcore: Fix misplaced PM call for scan_complete_work()

In reply to a message not in the archive

With runtime PM enabled, we now need to have wlcore enabled longer until after we're done calling wlcore_cmd_regdomain_config_locked():

scan_complete_work()
wlcore_cmd_regdomain_config_locked()
wlcore_cmd_send_failsafe()

     wl12xx_sdio_raw_read()

Note that this is not needed before runtime PM support as the custom PM code had it's own timer. We have not yet enabled runtime PM autosuspend for wlcore and this is why this issue now shows up.

Let's fix the issues first before we enable runtime PM autosuspend.

---
 drivers/net/wireless/ti/wlcore/scan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/net/wireless/ti/wlcore/scan.c +0 -1
@@ -78,8 +78,6 @@ void wl1271_scan_complete_work(struct work_struct *work)
 		wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
 	}
 
-	pm_runtime_put(wl->dev);
#25 lore raw

PATCH 5/6 wclore: Fix timout errors after recovery

In reply to a message not in the archive

After enabling runtime PM, if we force hardware reset multiple times with:

# echo 1 > /sys/kernel/debug/ieee80211/phy0/wlcore/start_recovery

We will after few tries get the following error:

wlcore: ERROR timeout waiting for the hardware to complete initialization

And then wlcore is unable to reconnect until after the wlcore related modules are reloaded.

Let's fix this by moving pm_runtime_put() earlier before we restart the hardware. And let's use the sync version to make sure we're done before we restart.

Note that we still will get -EBUSY warning from wl12xx_sdio_set_power() but let's fix that separately once we know exactly why we get the warning.

---
 drivers/net/wireless/ti/wlcore/main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
drivers/net/wireless/ti/wlcore/main.c +1 -1
@@ -977,6 +977,7 @@ static void wl1271_recovery_work(struct work_struct *work)
 	}
 
 	wlcore_op_stop_locked(wl);
+	pm_runtime_put_sync(wl->dev);
 
 	ieee80211_restart_hw(wl->hw);
 
@@ -986,8 +987,6 @@ static void wl1271_recovery_work(struct work_struct *work)
 	 */
 	wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
 
-	pm_runtime_put(wl->dev);
#26 lore raw

PATCH 6/6 wlcore: Use generic runtime pm calls for wowlan elp configuration

In reply to a message not in the archive

From: Eyal Reizer <[email protected]>

With runtime PM enabled, we can now use generic calls to pm_generic_runtime_suspend and pm_generic_runtime_resume for enabling elp during suspend when wowlan is enabled and waking the chip from elp on resume.

Remove the custom API that was used to ensure that the command that is used to allow ELP during suspend is completed before the system suspend.

---
 drivers/net/wireless/ti/wlcore/main.c | 51 +++++++--------------------
 1 file changed, 13 insertions(+), 38 deletions(-)
drivers/net/wireless/ti/wlcore/main.c +13 -38
@@ -998,24 +998,6 @@ static int wlcore_fw_wakeup(struct wl1271 *wl)
 	return wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
 }
 
-static int wlcore_fw_sleep(struct wl1271 *wl)
-{
-	int ret;
-
-	mutex_lock(&wl->mutex);
-	ret = wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_SLEEP);
-	if (ret < 0) {
-		wl12xx_queue_recovery_work(wl);
-		goto out;
-	}
-	set_bit(WL1271_FLAG_IN_ELP, &wl->flags);
-out:
-	mutex_unlock(&wl->mutex);
-	mdelay(WL1271_SUSPEND_SLEEP);
-
-	return 0;
-}
-
 static int wl1271_setup(struct wl1271 *wl)
 {
 	wl->raw_fw_status = kzalloc(wl->fw_status_len, GFP_KERNEL);
@@ -1738,6 +1720,7 @@ static int __maybe_unused wl1271_op_suspend(struct ieee80211_hw *hw,
 {
 	struct wl1271 *wl = hw->priv;
 	struct wl12xx_vif *wlvif;
+	unsigned long flags;
 	int ret;
 
 	wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
@@ -1796,19 +1779,6 @@ static int __maybe_unused wl1271_op_suspend(struct ieee80211_hw *hw,
 	/* flush any remaining work */
 	wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
 
-	/*
-	 * disable and re-enable interrupts in order to flush
-	 * the threaded_irq
-	 */
-	wlcore_disable_interrupts(wl);
-
-	/*
-	 * set suspended flag to avoid triggering a new threaded_irq
-	 * work. no need for spinlock as interrupts are disabled.
-	 */
-	set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
-
-	wlcore_enable_interrupts(wl);
 	flush_work(&wl->tx_work);
 
 	/*
@@ -1818,15 +1788,14 @@ static int __maybe_unused wl1271_op_suspend(struct ieee80211_hw *hw,
 	cancel_delayed_work(&wl->tx_watchdog_work);
 
 	/*
-	 * Use an immediate call for allowing the firmware to go into power
-	 * save during suspend.
-	 * Using a workque for this last write was only hapenning on resume
-	 * leaving the firmware with power save disabled during suspend,
-	 * while consuming full power during wowlan suspend.
+	 * set suspended flag to avoid triggering a new threaded_irq
+	 * work.
 	 */
-	wlcore_fw_sleep(wl);
+	spin_lock_irqsave(&wl->wl_lock, flags);
+	set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
+	spin_unlock_irqrestore(&wl->wl_lock, flags);
 
-	return 0;
+	return pm_generic_runtime_suspend(wl->dev);
 }
 
 static int __maybe_unused wl1271_op_resume(struct ieee80211_hw *hw)
@@ -1841,6 +1810,12 @@ static int __maybe_unused wl1271_op_resume(struct ieee80211_hw *hw)
 		     wl->wow_enabled);
 	WARN_ON(!wl->wow_enabled);
 
+	ret = pm_generic_runtime_resume(wl->dev);
+	if (ret < 0) {
+		wl1271_error("ELP wakeup failure!");
+		goto out_sleep;
+	}
+
 	/*
 	 * re-enable irq_work enqueuing, and call irq_work directly if
 	 * there is a pending work.
Signature · 1 line
2.17.0

A message that is not in the archive (sent off-list or not yet received): 20180529180605.73622-7-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org

#28 lore raw

Re: [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration

Quoted 6 lines · Tony Lindgren

From: Eyal Reizer <[email protected]>

With runtime PM enabled, we can now use generic calls to pm_generic_runtime_suspend and pm_generic_runtime_resume for enabling elp during suspend when wowlan is enabled and waking the chip from elp on resume.

Sry, but not sure you can :(

These functions are not used by drivers directly because system suspend are not synchronized with PM runtime, so if you call pm_generic_runtime_suspend() and, at the same time, there is pm_runtime_get_() in progress --> race ...

The pm_runtime_force_() APIs have to be used, or
PM runtime drivers functions can be called directly, but only if it possible to be sure no other PM runtime calls active which is usually true at suspend_noirq stage.

Quoted 19 lines

Remove the custom API that was used to ensure that the command that is used to allow ELP during suspend is completed before the system suspend.

---
  drivers/net/wireless/ti/wlcore/main.c | 51 +++++++--------------------
  1 file changed, 13 insertions(+), 38 deletions(-)
drivers/net/wireless/ti/wlcore/main.c +0 -1
@@ -998,24 +998,6 @@ static int wlcore_fw_wakeup(struct wl1271 *wl)
  	return wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
  }
 
-static int wlcore_fw_sleep(struct wl1271 *wl)

[...]

Signature · 2 lines
regards,
-grygorii

A message that is not in the archive (sent off-list or not yet received): 75fb865b-dc84-2e7d-d879-581e65dc343d-l0cyMroinI0@public.gmane.org

#30 lore raw

Re: [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration

Quoted 10 lines · Grygorii Strashko
Quoted 6 lines · Tony Lindgren

From: Eyal Reizer <[email protected]>

With runtime PM enabled, we can now use generic calls to pm_generic_runtime_suspend and pm_generic_runtime_resume for enabling elp during suspend when wowlan is enabled and waking the chip from elp on resume.

Sry, but not sure you can :(

Quoted 7 lines

These functions are not used by drivers directly because system suspend are not synchronized with PM runtime, so if you call pm_generic_runtime_suspend() and, at the same time, there is pm_runtime_get_() in progress --> race ...

The pm_runtime_force_() APIs have to be used, or
PM runtime drivers functions can be called directly, but only if it possible to be sure no other PM runtime calls active which is usually true at suspend_noirq stage.

Oh right, those are subsystem calls. Seems like pm_runtime_force_suspend/resume() should work here, Eyal?

Regards,

Tony

#31 lore raw

[RFTv3 8/6] wlcore: Enable runtime PM autosuspend support

In reply to a message not in the archive

With runtime PM tested working for wlcore with no autosuspend, we can now enable autosuspend to cut down on enable/disable for interrupts. Basically we just replace pm_runtime_put() with the autosuspend variants.

Let's use autosuspend delay of 50ms that MMC drivers typically use.

---

And here's the patch to test to enable autosuspend assuming people don't find issues with the earlier patches in this series.

---
 drivers/net/wireless/ti/wl18xx/debugfs.c    |   9 +-
 drivers/net/wireless/ti/wlcore/cmd.c        |   3 +-
 drivers/net/wireless/ti/wlcore/debugfs.c    |  33 ++++--
 drivers/net/wireless/ti/wlcore/main.c       | 111 +++++++++++++-------
 drivers/net/wireless/ti/wlcore/scan.c       |   3 +-
 drivers/net/wireless/ti/wlcore/sysfs.c      |   3 +-
 drivers/net/wireless/ti/wlcore/testmode.c   |   6 +-
 drivers/net/wireless/ti/wlcore/tx.c         |   3 +-
 drivers/net/wireless/ti/wlcore/vendor_cmd.c |   9 +-
 9 files changed, 121 insertions(+), 59 deletions(-)
drivers/net/wireless/ti/wl18xx/debugfs.c +6 -3
@@ -288,7 +288,8 @@ static ssize_t radar_detection_write(struct file *file,
 	if (ret < 0)
 		count = ret;
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -329,7 +330,8 @@ static ssize_t dynamic_fw_traces_write(struct file *file,
 	if (ret < 0)
 		count = ret;
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -392,7 +394,8 @@ static ssize_t radar_debug_mode_write(struct file *file,
 				       wl->radar_debug_mode, 0);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
drivers/net/wireless/ti/wlcore/cmd.c +2 -1
@@ -230,7 +230,8 @@ int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 	} while (!event);
 
 out:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 	kfree(events_vector);
 	return ret;
 }
drivers/net/wireless/ti/wlcore/debugfs.c +22 -11
@@ -79,7 +79,8 @@ void wl1271_debugfs_update_stats(struct wl1271 *wl)
 		wl->stats.fw_stats_update = jiffies;
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 out:
 	mutex_unlock(&wl->mutex);
@@ -131,7 +132,8 @@ static void chip_op_handler(struct wl1271 *wl, unsigned long value,
 	chip_op = arg;
 	chip_op(wl);
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 }
 
 
@@ -313,7 +315,8 @@ static ssize_t dynamic_ps_timeout_write(struct file *file,
 			wl1271_ps_set_mode(wl, wlvif, STATION_AUTO_PS_MODE);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 out:
 	mutex_unlock(&wl->mutex);
@@ -384,7 +387,8 @@ static ssize_t forced_ps_write(struct file *file,
 			wl1271_ps_set_mode(wl, wlvif, ps_mode);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 out:
 	mutex_unlock(&wl->mutex);
@@ -858,7 +862,8 @@ static ssize_t rx_streaming_interval_write(struct file *file,
 		wl1271_recalc_rx_streaming(wl, wlvif);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -915,7 +920,8 @@ static ssize_t rx_streaming_always_write(struct file *file,
 		wl1271_recalc_rx_streaming(wl, wlvif);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -964,7 +970,8 @@ static ssize_t beacon_filtering_write(struct file *file,
 		ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value);
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -1046,7 +1053,8 @@ static ssize_t sleep_auth_write(struct file *file,
 		goto out_sleep;
 
 out_sleep:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 	return count;
@@ -1120,7 +1128,8 @@ static ssize_t dev_mem_read(struct file *file,
 		goto part_err;
 
 part_err:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 skip_read:
 	mutex_unlock(&wl->mutex);
@@ -1201,7 +1210,8 @@ static ssize_t dev_mem_write(struct file *file, const char __user *user_buf,
 		goto part_err;
 
 part_err:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 skip_write:
 	mutex_unlock(&wl->mutex);
@@ -1276,7 +1286,8 @@ static ssize_t fw_logger_write(struct file *file,
 
 	ret = wl12xx_cmd_config_fwlog(wl);
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 out:
 	mutex_unlock(&wl->mutex);
drivers/net/wireless/ti/wlcore/main.c +75 -36

339 lines not on this page · raw message

drivers/net/wireless/ti/wlcore/scan.c +2 -1
@@ -85,7 +85,8 @@ void wl1271_scan_complete_work(struct work_struct *work)
 
 	wlcore_cmd_regdomain_config_locked(wl);
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
 	ieee80211_scan_completed(wl->hw, &info);
 
drivers/net/wireless/ti/wlcore/sysfs.c +2 -1
@@ -77,7 +77,8 @@ static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
 	}
 
 	wl1271_acx_sg_enable(wl, wl->sg_enabled);
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 
  out:
 	mutex_unlock(&wl->mutex);
drivers/net/wireless/ti/wlcore/testmode.c +4 -2
@@ -143,7 +143,8 @@ static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[])
 	}
 
 out_sleep:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -209,7 +210,8 @@ static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[])
 out_free:
 	kfree(cmd);
 out_sleep:
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
drivers/net/wireless/ti/wlcore/tx.c +2 -1
@@ -881,7 +881,8 @@ void wl1271_tx_work(struct work_struct *work)
 		goto out;
 	}
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 }
drivers/net/wireless/ti/wlcore/vendor_cmd.c +6 -3
@@ -65,7 +65,8 @@ wlcore_vendor_cmd_smart_config_start(struct wiphy *wiphy,
 	ret = wlcore_smart_config_start(wl,
 			nla_get_u32(tb[WLCORE_VENDOR_ATTR_GROUP_ID]));
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -98,7 +99,8 @@ wlcore_vendor_cmd_smart_config_stop(struct wiphy *wiphy,
 
 	ret = wlcore_smart_config_stop(wl);
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
@@ -147,7 +149,8 @@ wlcore_vendor_cmd_smart_config_set_group_key(struct wiphy *wiphy,
 			nla_len(tb[WLCORE_VENDOR_ATTR_GROUP_KEY]),
 			nla_data(tb[WLCORE_VENDOR_ATTR_GROUP_KEY]));
 
-	pm_runtime_put(wl->dev);
+	pm_runtime_mark_last_busy(wl->dev);
+	pm_runtime_put_autosuspend(wl->dev);
 out:
 	mutex_unlock(&wl->mutex);
 
Signature · 1 line
2.17.0