recipes-wifi/linux-mt76/files/patches-3.x/0125-mtk-mt76-mt7996-refactor-amsdu-debugfs.patch

From e7b50308230e874028c65233d5e2f7a7d1ad6479 Mon Sep 17 00:00:00 2001
From: Peter Chiu <chui-hao.chiu@mediatek.com>
Date: Fri, 17 May 2024 17:34:03 +0800
Subject: [PATCH 125/223] mtk: mt76: mt7996: refactor amsdu debugfs

1. Remove hw_amsdu_info which is duplicated with amsdu_info.

2. The amsdu_info cannot read CR directly because the CR is read-clear.
   If amsdu_info read CR directly, the CR would be cleared and the
   mt7996_mac_work cannot get correct value.

Change-Id: Ie83e861f32fa7ede075916f2393df51e39bebbad
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
---
 mt7996/mtk_debugfs.c | 63 ++++++++++++++++----------------------------
 1 file changed, 22 insertions(+), 41 deletions(-)

diff --git a/mt7996/mtk_debugfs.c b/mt7996/mtk_debugfs.c
index 06fa83bb..9d8c1942 100644
--- a/mt7996/mtk_debugfs.c
+++ b/mt7996/mtk_debugfs.c
@@ -210,28 +210,35 @@ DEFINE_SHOW_ATTRIBUTE(mt7996_agginfo);
 /* AMSDU INFO */
 static int mt7996_amsdu_result_read(struct seq_file *s, void *data)
 {
-#define HW_MSDU_CNT_ADDR 0xf400
-#define HW_MSDU_NUM_MAX 33
 	struct mt7996_dev *dev = dev_get_drvdata(s->private);
-	u32 ple_stat[HW_MSDU_NUM_MAX] = {0}, total_amsdu = 0;
-	u8 i;
+	struct mt7996_phy *phy = &dev->phy;
+	struct mt76_mib_stats *mib = &phy->mib;
+	static u32 tx_amsdu_last[MT76_MAX_AMSDU_NUM] = {0};
+	static u32 tx_amsdu_cnt_last = 0;
+	u32 tx_amsdu, tx_amsdu_cnt, ratio;
+	int i;
 
-	for (i = 0; i < HW_MSDU_NUM_MAX; i++)
-		ple_stat[i] = mt76_rr(dev, HW_MSDU_CNT_ADDR + i * 0x04);
+	mutex_lock(&dev->mt76.mutex);
 
-	seq_printf(s, "TXD counter status of MSDU:\n");
+	mt7996_mac_update_stats(phy);
 
-	for (i = 0; i < HW_MSDU_NUM_MAX; i++)
-		total_amsdu += ple_stat[i];
+	tx_amsdu_cnt = mib->tx_amsdu_cnt - tx_amsdu_cnt_last;
 
-	for (i = 0; i < HW_MSDU_NUM_MAX; i++) {
-		seq_printf(s, "AMSDU pack count of %d MSDU in TXD: 0x%x ", i, ple_stat[i]);
-		if (total_amsdu != 0)
-			seq_printf(s, "(%d%%)\n", ple_stat[i] * 100 / total_amsdu);
-		else
-			seq_printf(s, "\n");
+	seq_puts(s, "Tx MSDU statistics:\n");
+	for (i = 0; i < ARRAY_SIZE(mib->tx_amsdu); i++) {
+		tx_amsdu = mib->tx_amsdu[i] - tx_amsdu_last[i];
+		ratio = tx_amsdu_cnt ? tx_amsdu * 100 / tx_amsdu_cnt : 0;
+
+		seq_printf(s, "AMSDU pack count of %d MSDU in TXD: %8d (%3d%%)\n",
+			   i + 1, tx_amsdu, ratio);
+
+		tx_amsdu_last[i] = mib->tx_amsdu[i];
 	}
 
+	tx_amsdu_cnt_last = mib->tx_amsdu_cnt;
+
+	mutex_unlock(&dev->mt76.mutex);
+
 	return 0;
 }
 
@@ -3341,30 +3348,6 @@ static const struct file_operations fops_amsdu_para = {
 	.llseek = default_llseek,
 };
 
-static int mt7996_hw_amsdu_info_read(struct seq_file *s, void *data)
-{
-	struct mt7996_dev *dev = dev_get_drvdata(s->private);
-	u32 amsdu_cnt[WF_PLE_TOP_AMSDU_PACK_NUM] = {0}, total_cnt;
-	u8 i;
-
-	seq_printf(s, "HW A-MSDU Information:\n");
-
-	for (total_cnt = 0, i = 0; i < WF_PLE_TOP_AMSDU_PACK_NUM; ++i) {
-		amsdu_cnt[i] = mt76_rr(dev, WF_PLE_TOP_AMSDU_PACK_1_MSDU_CNT_ADDR + i * 4);
-		total_cnt += amsdu_cnt[i];
-	}
-
-	for (i = 0; i < WF_PLE_TOP_AMSDU_PACK_NUM; ++i) {
-		seq_printf(s, "# of HW A-MSDU containing %hhu MSDU: 0x%x",
-		           i + 1, amsdu_cnt[i]);
-		seq_printf(s, "\t(%u.%u%%)\n",
-		           total_cnt ? amsdu_cnt[i] * 1000 / total_cnt / 10 : 0,
-		           total_cnt ? amsdu_cnt[i] * 1000 / total_cnt % 10 : 0);
-	}
-
-	return 0;
-}
-
 /* PSE INFO */
 static struct bmac_queue_info_t pse_queue_empty_info[] = {
 	{"CPU Q0",  ENUM_UMAC_CPU_PORT_1,     ENUM_UMAC_CTX_Q_0},
@@ -4304,8 +4287,6 @@ void mt7996_mtk_init_dev_debugfs(struct mt7996_dev *dev, struct dentry *dir)
 	/* amsdu */
 	debugfs_create_file("amsdu_algo", 0600, dir, dev, &fops_amsdu_algo);
 	debugfs_create_file("amsdu_para", 0600, dir, dev, &fops_amsdu_para);
-	debugfs_create_devm_seqfile(dev->mt76.dev, "hw_amsdu_info", dir,
-	                            mt7996_hw_amsdu_info_read);
 }
 
 #endif
-- 
2.45.2