[PATCH mt76 v2 15/17] wifi: mt76: mt7996: Do not schedule RRO and TxFree queues during reset for NPU
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2026-01-22 10:41:09
Also in:
linux-arm-kernel, linux-mediatek
Subsystem:
mediatek mt76 wireless lan driver, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Ryder Lee, Linus Torvalds
This is a preliminary patch to properly manage reset procedure when NPU offloading is enabled. Tested-by: Kang Yang <redacted> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/wireless/mediatek/mt76/dma.c | 11 +++++++++++ drivers/net/wireless/mediatek/mt76/mt76.h | 10 ++++++++++ drivers/net/wireless/mediatek/mt76/mt7996/dma.c | 5 +++++ drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 14 ++++++++++++++ 4 files changed, 40 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index f5c6bb94ccbbda6afe03b24cf245b30c797e855d..2d133ace7c33ac5492e287a53510ee4b6a6b7403 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c@@ -881,6 +881,10 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q) mt76_queue_is_wed_rro(q)) continue; + if (mt76_npu_device_active(dev) && + mt76_queue_is_wed_rro(q)) + continue; + if (!mt76_queue_is_wed_rro_rxdmad_c(q) && !mt76_queue_is_wed_rro_ind(q)) mt76_put_page_pool_buf(buf, false);
@@ -923,6 +927,13 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid) mt76_queue_is_wed_rro(q)) return; + if (mt76_npu_device_active(dev) && + mt76_queue_is_wed_rro(q)) + return; + + if (mt76_queue_is_npu_txfree(q)) + return; + mt76_dma_sync_idx(dev, q); if (mt76_queue_is_npu(q)) mt76_npu_fill_rx_queue(dev, q);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index eefc3f555f8afea2af67517683d522b657e20b7b..5e68efc367fce63bcc60a8792e6f9d118283e3ed 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h@@ -55,6 +55,8 @@ FIELD_PREP(MT_QFLAG_WED_RING, _n)) #define MT_NPU_Q_TX(_n) __MT_NPU_Q(MT76_WED_Q_TX, _n) #define MT_NPU_Q_RX(_n) __MT_NPU_Q(MT76_WED_Q_RX, _n) +#define MT_NPU_Q_TXFREE(_n) (FIELD_PREP(MT_QFLAG_WED_TYPE, MT76_WED_Q_TXFREE) | \ + FIELD_PREP(MT_QFLAG_WED_RING, _n)) struct mt76_dev; struct mt76_phy;
@@ -2003,6 +2005,14 @@ static inline bool mt76_queue_is_npu_rx(struct mt76_queue *q) FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_RX; } +static inline bool mt76_queue_is_npu_txfree(struct mt76_queue *q) +{ + if (q->flags & MT_QFLAG_WED) + return false; + + return FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_TXFREE; +} + struct mt76_txwi_cache * mt76_token_release(struct mt76_dev *dev, int token, bool *wake); int mt76_token_consume(struct mt76_dev *dev, struct mt76_txwi_cache **ptxwi);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
index 1a4f5f5b2a8435933070bb7d8feab26a0c174922..8f5d297dafce23dcb3c1e53678f8d67dab9e8987 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c@@ -756,6 +756,9 @@ int mt7996_dma_init(struct mt7996_dev *dev) (is_mt7992(&dev->mt76)))) { dev->mt76.q_rx[MT_RXQ_MAIN_WA].flags = MT_WED_Q_TXFREE; dev->mt76.q_rx[MT_RXQ_MAIN_WA].wed = wed; + } else if (is_mt7992(&dev->mt76) && + mt76_npu_device_active(&dev->mt76)) { + dev->mt76.q_rx[MT_RXQ_MAIN_WA].flags = MT_NPU_Q_TXFREE(0); } if (mt7996_has_wa(dev)) {
@@ -888,6 +891,8 @@ int mt7996_dma_init(struct mt7996_dev *dev) /* tx free notify event from WA for band0 */ dev->mt76.q_rx[MT_RXQ_TXFREE_BAND0].flags = MT_WED_Q_TXFREE; dev->mt76.q_rx[MT_RXQ_TXFREE_BAND0].wed = wed; + } else if (mt76_npu_device_active(&dev->mt76)) { + dev->mt76.q_rx[MT_RXQ_TXFREE_BAND0].flags = MT_NPU_Q_TXFREE(0); } ret = mt76_queue_alloc(dev,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index ebce6b080886896be746c37690ef38713fe2cbc2..c88a97dbab8d529e71c8bcbb146e7e319c32e6e4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c@@ -2563,6 +2563,13 @@ void mt7996_mac_reset_work(struct work_struct *work) mt76_queue_is_wed_rro(&dev->mt76.q_rx[i])) continue; + if (mt76_npu_device_active(&dev->mt76) && + mt76_queue_is_wed_rro(&dev->mt76.q_rx[i])) + continue; + + if (mt76_queue_is_npu_txfree(&dev->mt76.q_rx[i])) + continue; + napi_disable(&dev->mt76.napi[i]); } napi_disable(&dev->mt76.tx_napi);
@@ -2618,6 +2625,13 @@ void mt7996_mac_reset_work(struct work_struct *work) mt76_queue_is_wed_rro(&dev->mt76.q_rx[i])) continue; + if (mt76_npu_device_active(&dev->mt76) && + mt76_queue_is_wed_rro(&dev->mt76.q_rx[i])) + continue; + + if (mt76_queue_is_npu_txfree(&dev->mt76.q_rx[i])) + continue; + napi_enable(&dev->mt76.napi[i]); local_bh_disable(); napi_schedule(&dev->mt76.napi[i]);
--
2.52.0