mt76: mt7615: add more useful Tx mib counters

Add ba_miss_cnt and ampdu_per in mib_stats.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c

@@ -150,6 +150,10 @@ mt7615_ampdu_stat_read_phy(struct mt7615_phy *phy,
 	for (i = 0; i < ARRAY_SIZE(bound); i++)
 		seq_printf(file, "%8d | ", dev->mt76.aggr_stats[i + range]);
 	seq_puts(file, "\n");
+
+	seq_printf(file, "BA miss count: %d\n", phy->mib.ba_miss_cnt);
+	seq_printf(file, "PER: %ld.%1ld%%\n",
+		   phy->mib.aggr_per / 10, phy->mib.aggr_per % 10);
 }
 
 static int

drivers/net/wireless/mediatek/mt76/mt7615/mac.c

@@ -1754,20 +1754,30 @@ mt7615_mac_update_mib_stats(struct mt7615_phy *phy)
 	struct mib_stats *mib = &phy->mib;
 	bool ext_phy = phy != &dev->phy;
 	int i, aggr;
+	u32 val, val2;
 
 	memset(mib, 0, sizeof(*mib));
 
 	mib->fcs_err_cnt = mt76_get_field(dev, MT_MIB_SDR3(ext_phy),
 					  MT_MIB_SDR3_FCS_ERR_MASK);
 
+	val = mt76_get_field(dev, MT_MIB_SDR14(ext_phy),
+			     MT_MIB_AMPDU_MPDU_COUNT);
+	val2 = mt76_get_field(dev, MT_MIB_SDR15(ext_phy),
+			      MT_MIB_AMPDU_ACK_COUNT);
+	mib->aggr_per = 1000 * (val - val2) / val;
+
 	aggr = ext_phy ? ARRAY_SIZE(dev->mt76.aggr_stats) / 2 : 0;
 	for (i = 0; i < 4; i++) {
-		u32 val, val2;
+		val = mt76_rr(dev, MT_MIB_MB_SDR1(ext_phy, i));
+
+		val2 = FIELD_GET(MT_MIB_ACK_FAIL_COUNT_MASK, val);
+		if (val2 > mib->ack_fail_cnt)
+			mib->ack_fail_cnt = val2;
 
-		val = mt76_get_field(dev, MT_MIB_MB_SDR1(ext_phy, i),
-				     MT_MIB_ACK_FAIL_COUNT_MASK);
-		if (val > mib->ack_fail_cnt)
-			mib->ack_fail_cnt = val;
+		val2 = FIELD_GET(MT_MIB_BA_MISS_COUNT_MASK, val);
+		if (val2 > mib->ba_miss_cnt)
+			mib->ba_miss_cnt = val2;
 
 		val = mt76_rr(dev, MT_MIB_MB_SDR0(ext_phy, i));
 		val2 = FIELD_GET(MT_MIB_RTS_RETRIES_COUNT_MASK, val);

drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h

@@ -117,6 +117,8 @@ struct mib_stats {
 	u16 fcs_err_cnt;
 	u16 rts_cnt;
 	u16 rts_retries_cnt;
+	u16 ba_miss_cnt;
+	unsigned long aggr_per;
 };
 
 struct mt7615_phy {

drivers/net/wireless/mediatek/mt76/mt7615/regs.h

@@ -389,6 +389,12 @@ enum mt7615_reg_base {
 #define MT_MIB_SDR9(_band)		MT_WF_MIB(_band, 0x02c)
 #define MT_MIB_SDR9_BUSY_MASK		GENMASK(23, 0)
 
+#define MT_MIB_SDR14(_band)		MT_WF_MIB(_band, 0x040)
+#define MT_MIB_AMPDU_MPDU_COUNT		GENMASK(23, 0)
+
+#define MT_MIB_SDR15(_band)		MT_WF_MIB(_band, 0x044)
+#define MT_MIB_AMPDU_ACK_COUNT		GENMASK(23, 0)
+
 #define MT_MIB_SDR16(_band)		MT_WF_MIB(_band, 0x048)
 #define MT_MIB_SDR16_BUSY_MASK		GENMASK(23, 0)
 
@@ -402,6 +408,7 @@ enum mt7615_reg_base {
 #define MT_MIB_RTS_COUNT_MASK		GENMASK(15, 0)
 
 #define MT_MIB_MB_SDR1(_band, n)	MT_WF_MIB(_band, 0x104 + ((n) << 4))
+#define MT_MIB_BA_MISS_COUNT_MASK	GENMASK(15, 0)
 #define MT_MIB_ACK_FAIL_COUNT_MASK	GENMASK(31, 16)
 
 #define MT_TX_AGG_CNT(_band, n)		MT_WF_MIB(_band, 0xa8 + ((n) << 2))