From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Latency is not obviously that useful, but txcount can let us deduce
retries, which may be more interesting.
Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7915/init.c | 3 +++
drivers/net/wireless/mediatek/mt76/mt7915/mac.h | 6 +++++-
drivers/net/wireless/mediatek/mt76/mt7915/regs.h | 4 ++++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 91a31b9d52f2..b4ceb78c6745 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -460,6 +460,9 @@ static void mt7915_mac_init(struct mt7915_dev *dev)
/* enable hardware de-agg */
mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
+ /* disable Tx latency report to enable Tx count in txfree path */
+ mt76_clear(dev, MT_PLE_HOST_RPT0, MT_PLE_HOST_RPT0_TX_LATENCY);
+
for (i = 0; i < mt7915_wtbl_size(dev); i++)
mt7915_mac_wtbl_update(dev, i,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
index 2e6c574ae2dd..503a4b90ad11 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
@@ -314,8 +314,12 @@ struct mt7915_tx_free {
#define MT_TX_FREE_MSDU_CNT GENMASK(9, 0)
#define MT_TX_FREE_MSDU_CNT_V0 GENMASK(6, 0)
#define MT_TX_FREE_WLAN_ID GENMASK(23, 14)
+/* when configured for txfree latency mode. See MT_PLE_HOST_RPT0_TX_LATENCY
+ * Not enabled by default now.
+ */
#define MT_TX_FREE_LATENCY GENMASK(12, 0)
-/* 0: success, others: dropped */
+/* when configured for txcount mode. See MT_PLE_HOST_RPT0_TX_LATENCY. */
+#define MT_TX_FREE_TXCNT GENMASK(12, 0)
#define MT_TX_FREE_MSDU_ID GENMASK(30, 16)
#define MT_TX_FREE_PAIR BIT(31)
#define MT_TX_FREE_MPDU_HEADER BIT(30)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index 4953be208c5e..8bbc9a0ae699 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
@@ -132,6 +132,10 @@ enum offs_rev {
#define MT_PLE_BASE 0x820c0000
#define MT_PLE(ofs) (MT_PLE_BASE + (ofs))
+/* Modify whether txfree struct returns latency or txcount. */
+#define MT_PLE_HOST_RPT0 MT_PLE(0x030)
+#define MT_PLE_HOST_RPT0_TX_LATENCY BIT(3)
+
#define MT_FL_Q_EMPTY MT_PLE(__OFFS(PLE_FL_Q_EMPTY))
#define MT_FL_Q0_CTRL MT_PLE(__OFFS(PLE_FL_Q_CTRL))
#define MT_FL_Q2_CTRL MT_PLE(__OFFS(PLE_FL_Q_CTRL) + 0x8)
--
2.20.1
