recipes-wifi/linux-mt76/files/patches-3.x/0045-mtk-mt76-mt7996-add-SER-overlap-handle.patch

From 4a53b4dbb4c727e79752c35c588cb6ebb82d072a Mon Sep 17 00:00:00 2001
From: Bo Jiao <Bo.Jiao@mediatek.com>
Date: Tue, 21 Nov 2023 09:55:46 +0800
Subject: [PATCH 045/199] mtk: mt76: mt7996: add SER overlap handle

Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
---
 mcu.c           |  3 ++-
 mt7996/mac.c    | 11 +++++++++++
 mt7996/mcu.c    |  8 ++++++++
 mt7996/mt7996.h |  2 ++
 4 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/mcu.c b/mcu.c
index 2926f715..a7afa2d7 100644
--- a/mcu.c
+++ b/mcu.c
@@ -94,7 +94,8 @@ int mt76_mcu_skb_send_and_get_msg(struct mt76_dev *dev, struct sk_buff *skb,
 		if (retry && retry_cnt < MT76_MSG_MAX_RETRY_CNT) {
 			if (test_bit(MT76_MCU_RESET, &dev->phy.state))
 				usleep_range(200000, 500000);
-			dev_err(dev->dev, "send message %08x timeout, try again.\n", cmd);
+			dev_err(dev->dev, "send message %08x timeout, try again(%d).\n",
+				cmd, (MT76_MSG_MAX_RETRY_CNT - retry_cnt));
 		}
 
 		ret = dev->mcu_ops->mcu_skb_send_msg(dev, skb_tmp, cmd, &seq);
diff --git a/mt7996/mac.c b/mt7996/mac.c
index 503a562a..63408421 100644
--- a/mt7996/mac.c
+++ b/mt7996/mac.c
@@ -1894,6 +1894,7 @@ void mt7996_mac_reset_work(struct work_struct *work)
 	if (!(READ_ONCE(dev->recovery.state) & MT_MCU_CMD_STOP_DMA))
 		return;
 
+	dev->recovery.l1_reset_last = dev->recovery.l1_reset;
 	dev_info(dev->mt76.dev,"\n%s L1 SER recovery start.",
 		 wiphy_name(dev->mt76.hw->wiphy));
 
@@ -1911,6 +1912,10 @@ void mt7996_mac_reset_work(struct work_struct *work)
 
 	set_bit(MT76_RESET, &dev->mphy.state);
 	set_bit(MT76_MCU_RESET, &dev->mphy.state);
+	if (phy2)
+		set_bit(MT76_RESET, &phy2->mt76->state);
+	if (phy3)
+		set_bit(MT76_RESET, &phy3->mt76->state);
 	wake_up(&dev->mt76.mcu.wait);
 
 	mt76_worker_disable(&dev->mt76.tx_worker);
@@ -2106,6 +2111,9 @@ void mt7996_coredump(struct mt7996_dev *dev, u8 state)
 
 void mt7996_reset(struct mt7996_dev *dev)
 {
+	dev_info(dev->mt76.dev, "%s SER recovery state: 0x%08x\n",
+		 wiphy_name(dev->mt76.hw->wiphy), READ_ONCE(dev->recovery.state));
+
 	if (!dev->recovery.hw_init_done)
 		return;
 
@@ -2125,6 +2133,9 @@ void mt7996_reset(struct mt7996_dev *dev)
 		return;
 	}
 
+	if ((READ_ONCE(dev->recovery.state) & MT_MCU_CMD_STOP_DMA))
+		dev->recovery.l1_reset++;
+
 	queue_work(dev->mt76.wq, &dev->reset_work);
 	wake_up(&dev->reset_wait);
 }
diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index 548f6660..49a55bd3 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -246,6 +246,14 @@ mt7996_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
 	u32 val;
 	u8 seq;
 
+	if (dev->recovery.l1_reset_last != dev->recovery.l1_reset) {
+		dev_info(dev->mt76.dev,"\n%s L1 SER recovery overlap, drop message %08x.",
+			 wiphy_name(dev->mt76.hw->wiphy), cmd);
+
+		dev_kfree_skb(skb);
+		return -EPERM;
+	}
+
 	mdev->mcu.timeout = 20 * HZ;
 
 	seq = ++dev->mt76.mcu.msg_seq & 0xf;
diff --git a/mt7996/mt7996.h b/mt7996/mt7996.h
index 9ec2090b..47a316e1 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -397,6 +397,8 @@ struct mt7996_dev {
 	wait_queue_head_t reset_wait;
 	struct {
 		u32 state;
+		u32 l1_reset;
+		u32 l1_reset_last;
 		u32 wa_reset_count;
 		u32 wm_reset_count;
 		bool hw_full_reset:1;
-- 
2.18.0