recipes-wifi/linux-mt76/files/patches-3.x/0032-mtk-mt76-try-more-times-when-send-message-timeout.patch

From 8f5062f0a4362f58e57354447ac81924c184db8a Mon Sep 17 00:00:00 2001
From: Bo Jiao <Bo.Jiao@mediatek.com>
Date: Mon, 6 Nov 2023 11:10:10 +0800
Subject: [PATCH 032/193] mtk: mt76: try more times when send message timeout.

Change-Id: Ib7c01e6c9f74f68d8404a3d8bada9e5a10c4e232
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
---
 dma.c        |  7 ++++--
 mcu.c        | 70 +++++++++++++++++++++++++++-------------------------
 mt7996/mac.c | 37 +++++++++------------------
 mt7996/mcu.c |  1 +
 4 files changed, 54 insertions(+), 61 deletions(-)

diff --git a/dma.c b/dma.c
index 5604463..66c000e 100644
--- a/dma.c
+++ b/dma.c
@@ -504,9 +504,12 @@ mt76_dma_tx_queue_skb_raw(struct mt76_dev *dev, struct mt76_queue *q,
 {
 	struct mt76_queue_buf buf = {};
 	dma_addr_t addr;
+	int ret = -ENOMEM;
 
-	if (test_bit(MT76_MCU_RESET, &dev->phy.state))
+	if (test_bit(MT76_MCU_RESET, &dev->phy.state)) {
+		ret = -EAGAIN;
 		goto error;
+	}
 
 	if (q->queued + 1 >= q->ndesc - 1)
 		goto error;
@@ -528,7 +531,7 @@ mt76_dma_tx_queue_skb_raw(struct mt76_dev *dev, struct mt76_queue *q,
 
 error:
 	dev_kfree_skb(skb);
-	return -ENOMEM;
+	return ret;
 }
 
 static int
diff --git a/mcu.c b/mcu.c
index 2bcce21..fed363d 100644
--- a/mcu.c
+++ b/mcu.c
@@ -4,6 +4,7 @@
  */
 
 #include "mt76.h"
+#include "mt76_connac.h"
 #include <linux/moduleparam.h>
 
 struct sk_buff *
@@ -75,7 +76,7 @@ int mt76_mcu_skb_send_and_get_msg(struct mt76_dev *dev, struct sk_buff *skb,
 				  struct sk_buff **ret_skb)
 {
 	unsigned int retry = 0;
-	struct sk_buff *orig_skb = NULL;
+	struct sk_buff *skb_tmp;
 	unsigned long expires;
 	int ret, seq;
 
@@ -84,48 +85,49 @@ int mt76_mcu_skb_send_and_get_msg(struct mt76_dev *dev, struct sk_buff *skb,
 
 	mutex_lock(&dev->mcu.mutex);
 
-	if (dev->mcu_ops->mcu_skb_prepare_msg) {
-		orig_skb = skb;
-		ret = dev->mcu_ops->mcu_skb_prepare_msg(dev, skb, cmd, &seq);
-		if (ret < 0)
+	while (retry < dev->mcu_ops->max_retry) {
+		skb_tmp = mt76_mcu_msg_alloc(dev, skb->data, skb->len);
+		if (!skb_tmp)
 			goto out;
-	}
-
-retry:
-	/* orig skb might be needed for retry, mcu_skb_send_msg consumes it */
-	if (orig_skb)
-		skb_get(orig_skb);
-	ret = dev->mcu_ops->mcu_skb_send_msg(dev, skb, cmd, &seq);
-	if (ret < 0)
-		goto out;
-
-	if (!wait_resp) {
-		ret = 0;
-		goto out;
-	}
-
-	expires = jiffies + dev->mcu.timeout;
 
-	do {
-		skb = mt76_mcu_get_response(dev, expires);
-		if (!skb && !test_bit(MT76_MCU_RESET, &dev->phy.state) &&
-		    orig_skb && retry++ < dev->mcu_ops->max_retry) {
+		if (wait_resp && retry) {
+			if (test_bit(MT76_MCU_RESET, &dev->phy.state))
+				usleep_range(200000, 500000);
 			dev_err(dev->dev, "Retry message %08x (seq %d)\n",
 				cmd, seq);
-			skb = orig_skb;
-			goto retry;
 		}
 
-		ret = dev->mcu_ops->mcu_parse_response(dev, cmd, skb, seq);
-		if (!ret && ret_skb)
-			*ret_skb = skb;
-		else
-			dev_kfree_skb(skb);
-	} while (ret == -EAGAIN);
+		ret = dev->mcu_ops->mcu_skb_send_msg(dev, skb_tmp, cmd, &seq);
+		if (ret < 0 && ret != -EAGAIN)
+			goto out;
 
+		if (!wait_resp) {
+			ret = 0;
+			goto out;
+		}
+
+		expires = jiffies + dev->mcu.timeout;
+
+		do {
+			skb_tmp = mt76_mcu_get_response(dev, expires);
+			ret = dev->mcu_ops->mcu_parse_response(dev, cmd, skb_tmp, seq);
+			if (ret == -ETIMEDOUT)
+				break;
+
+			if (!ret && ret_skb)
+				*ret_skb = skb_tmp;
+			else
+				dev_kfree_skb(skb_tmp);
+
+			if (ret != -EAGAIN)
+				goto out;
+		} while (ret == -EAGAIN);
+
+		retry++;
+	}
 
 out:
-	dev_kfree_skb(orig_skb);
+	dev_kfree_skb(skb);
 	mutex_unlock(&dev->mcu.mutex);
 
 	return ret;
diff --git a/mt7996/mac.c b/mt7996/mac.c
index 428ccb1..3c9ee0c 100644
--- a/mt7996/mac.c
+++ b/mt7996/mac.c
@@ -1805,13 +1805,24 @@ mt7996_mac_full_reset(struct mt7996_dev *dev)
 	phy3 = mt7996_phy3(dev);
 	dev->recovery.hw_full_reset = true;
 
-	wake_up(&dev->mt76.mcu.wait);
 	ieee80211_stop_queues(mt76_hw(dev));
 	if (phy2)
 		ieee80211_stop_queues(phy2->mt76->hw);
 	if (phy3)
 		ieee80211_stop_queues(phy3->mt76->hw);
 
+	set_bit(MT76_RESET, &dev->mphy.state);
+	set_bit(MT76_MCU_RESET, &dev->mphy.state);
+	wake_up(&dev->mt76.mcu.wait);
+	if (phy2) {
+		set_bit(MT76_RESET, &phy2->mt76->state);
+		set_bit(MT76_MCU_RESET, &phy2->mt76->state);
+	}
+	if (phy3) {
+		set_bit(MT76_RESET, &phy3->mt76->state);
+		set_bit(MT76_MCU_RESET, &phy3->mt76->state);
+	}
+
 	cancel_work_sync(&dev->wed_rro.work);
 	cancel_delayed_work_sync(&dev->mphy.mac_work);
 	if (phy2)
@@ -1914,16 +1925,6 @@ void mt7996_mac_reset_work(struct work_struct *work)
 	set_bit(MT76_MCU_RESET, &dev->mphy.state);
 	wake_up(&dev->mt76.mcu.wait);
 
-	cancel_work_sync(&dev->wed_rro.work);
-	cancel_delayed_work_sync(&dev->mphy.mac_work);
-	if (phy2) {
-		set_bit(MT76_RESET, &phy2->mt76->state);
-		cancel_delayed_work_sync(&phy2->mt76->mac_work);
-	}
-	if (phy3) {
-		set_bit(MT76_RESET, &phy3->mt76->state);
-		cancel_delayed_work_sync(&phy3->mt76->mac_work);
-	}
 	mt76_worker_disable(&dev->mt76.tx_worker);
 	mt76_for_each_q_rx(&dev->mt76, i) {
 		if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
@@ -1934,8 +1935,6 @@ void mt7996_mac_reset_work(struct work_struct *work)
 	}
 	napi_disable(&dev->mt76.tx_napi);
 
-	mutex_lock(&dev->mt76.mutex);
-
 	mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_STOPPED);
 
 	if (mt7996_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
@@ -2008,20 +2007,8 @@ void mt7996_mac_reset_work(struct work_struct *work)
 	if (phy3)
 		ieee80211_wake_queues(phy3->mt76->hw);
 
-	mutex_unlock(&dev->mt76.mutex);
-
 	mt7996_update_beacons(dev);
 
-	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work,
-				     MT7996_WATCHDOG_TIME);
-	if (phy2)
-		ieee80211_queue_delayed_work(phy2->mt76->hw,
-					     &phy2->mt76->mac_work,
-					     MT7996_WATCHDOG_TIME);
-	if (phy3)
-		ieee80211_queue_delayed_work(phy3->mt76->hw,
-					     &phy3->mt76->mac_work,
-					     MT7996_WATCHDOG_TIME);
 	dev_info(dev->mt76.dev,"\n%s L1 SER recovery completed.",
 		 wiphy_name(dev->mt76.hw->wiphy));
 }
diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index ed41f51..77567d5 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -3139,6 +3139,7 @@ int mt7996_mcu_init_firmware(struct mt7996_dev *dev)
 int mt7996_mcu_init(struct mt7996_dev *dev)
 {
 	static const struct mt76_mcu_ops mt7996_mcu_ops = {
+		.max_retry = 3,
 		.headroom = sizeof(struct mt76_connac2_mcu_txd), /* reuse */
 		.mcu_skb_send_msg = mt7996_mcu_send_message,
 		.mcu_parse_response = mt7996_mcu_parse_response,
-- 
2.45.2