From d7a79fcece87b4cc4d1ab771f3d51b2b9b5bad27 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Thu, 22 Jan 2026 11:39:53 +0100 Subject: [PATCH] wifi: mt76: mt7996: Integrate NPU in RRO session management Add NPU integration in RRO 3.0 session management. This is a preliminary patch to enable NPU offload for MT7996 (Eagle) chipset. Tested-by: Kang Yang Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260122-mt76-npu-eagle-offload-v2-9-2374614c0de6@kernel.org Signed-off-by: Felix Fietkau --- mt76.h | 10 ++++++++++ mt7996/init.c | 16 +++++++++++++++- npu.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 55 insertions(+), 1 deletion(-) diff --git a/mt76.h b/mt76.h index 646cc8e5..9783037b 100644 --- a/mt76.h +++ b/mt76.h @@ -1661,6 +1661,9 @@ void mt76_npu_txdesc_cleanup(struct mt76_queue *q, int index); int mt76_npu_net_setup_tc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct net_device *dev, enum tc_setup_type type, void *type_data); +int mt76_npu_send_txrx_addr(struct mt76_dev *dev, int ifindex, + u32 direction, u32 i_count_addr, + u32 o_status_addr, u32 o_count_addr); #else static inline void mt76_npu_check_ppe(struct mt76_dev *dev, struct sk_buff *skb, u32 info) @@ -1719,6 +1722,13 @@ static inline int mt76_npu_net_setup_tc(struct ieee80211_hw *hw, { return -EOPNOTSUPP; } + +static inline int mt76_npu_send_txrx_addr(struct mt76_dev *dev, int ifindex, + u32 direction, u32 i_count_addr, + u32 o_status_addr, u32 o_count_addr) +{ + return -EOPNOTSUPP; +} #endif /* CONFIG_MT76_NPU */ static inline bool mt76_npu_device_active(struct mt76_dev *dev) diff --git a/mt7996/init.c b/mt7996/init.c index 7fb82005..b48ac7e2 100644 --- a/mt7996/init.c +++ b/mt7996/init.c @@ -960,6 +960,12 @@ static int mt7996_wed_rro_init(struct mt7996_dev *dev) addr++; } + if (is_mt7996(&dev->mt76) && + mt76_npu_device_active(&dev->mt76)) + mt76_npu_send_txrx_addr(&dev->mt76, 0, i, + dev->wed_rro.addr_elem[i].phy_addr, + 0, 0); + #ifdef CONFIG_NET_MEDIATEK_SOC_WED if (mtk_wed_device_active(&dev->mt76.mmio.wed) && mtk_wed_get_rx_capa(&dev->mt76.mmio.wed)) { @@ -1020,6 +1026,10 @@ static int mt7996_wed_rro_init(struct mt7996_dev *dev) addr++; } + if (is_mt7996(&dev->mt76) && mt76_npu_device_active(&dev->mt76)) + mt76_npu_send_txrx_addr(&dev->mt76, 1, 0, + dev->wed_rro.session.phy_addr, 0, 0); + mt7996_rro_hw_init(dev); return mt7996_dma_rro_init(dev); @@ -1106,8 +1116,12 @@ static void mt7996_wed_rro_work(struct work_struct *work) list); list_del_init(&e->list); - if (mt76_npu_device_active(&dev->mt76)) + if (mt76_npu_device_active(&dev->mt76)) { + if (is_mt7996(&dev->mt76)) + mt76_npu_send_txrx_addr(&dev->mt76, 3, e->id, + 0, 0, 0); goto reset_session; + } for (i = 0; i < MT7996_RRO_WINDOW_MAX_LEN; i++) { void *ptr = dev->wed_rro.session.ptr; diff --git a/npu.c b/npu.c index e332e4e0..dcc6b9e2 100644 --- a/npu.c +++ b/npu.c @@ -383,6 +383,36 @@ int mt76_npu_net_setup_tc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, } EXPORT_SYMBOL_GPL(mt76_npu_net_setup_tc); +int mt76_npu_send_txrx_addr(struct mt76_dev *dev, int ifindex, + u32 direction, u32 i_count_addr, + u32 o_status_addr, u32 o_count_addr) +{ + struct { + __le32 dir; + __le32 in_count_addr; + __le32 out_status_addr; + __le32 out_count_addr; + } info = { + .dir = cpu_to_le32(direction), + .in_count_addr = cpu_to_le32(i_count_addr), + .out_status_addr = cpu_to_le32(o_status_addr), + .out_count_addr = cpu_to_le32(o_count_addr), + }; + struct airoha_npu *npu; + int err = -ENODEV; + + rcu_read_lock(); + npu = rcu_dereference(dev->mmio.npu); + if (npu) + err = airoha_npu_wlan_send_msg(npu, ifindex, + WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR, + &info, sizeof(info), GFP_ATOMIC); + rcu_read_unlock(); + + return err; +} +EXPORT_SYMBOL_GPL(mt76_npu_send_txrx_addr); + void mt76_npu_disable_irqs(struct mt76_dev *dev) { struct airoha_npu *npu;