introduce individual TWT support in AP mode

index a6730072d13a..2e8953d80d4b 100644
@@ -1088,6 +1088,48 @@ struct ieee80211_ext {
 	} u;
 } __packed __aligned(2);
 
+#define IEEE80211_TWT_CONTROL_NDP			BIT(0)
+#define IEEE80211_TWT_CONTROL_RESP_MODE			BIT(1)
+#define IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST	BIT(3)
+#define IEEE80211_TWT_CONTROL_RX_DISABLED		BIT(4)
+#define IEEE80211_TWT_CONTROL_WAKE_DUR_UNIT		BIT(5)
+
+#define IEEE80211_TWT_REQTYPE_REQUEST			BIT(0)
+#define IEEE80211_TWT_REQTYPE_SETUP_CMD			GENMASK(3, 1)
+#define IEEE80211_TWT_REQTYPE_TRIGGER			BIT(4)
+#define IEEE80211_TWT_REQTYPE_IMPLICIT			BIT(5)
+#define IEEE80211_TWT_REQTYPE_FLOWTYPE			BIT(6)
+#define IEEE80211_TWT_REQTYPE_FLOWID			GENMASK(9, 7)
+#define IEEE80211_TWT_REQTYPE_WAKE_INT_EXP		GENMASK(14, 10)
+#define IEEE80211_TWT_REQTYPE_PROTECTION		BIT(15)
+
+enum ieee80211_twt_setup_cmd {
+	TWT_SETUP_CMD_REQUEST,
+	TWT_SETUP_CMD_SUGGEST,
+	TWT_SETUP_CMD_DEMAND,
+	TWT_SETUP_CMD_GROUPING,
+	TWT_SETUP_CMD_ACCEPT,
+	TWT_SETUP_CMD_ALTERNATE,
+	TWT_SETUP_CMD_DICTATE,
+	TWT_SETUP_CMD_REJECT,
+};
+
+struct ieee80211_twt_params {
+	__le16 req_type;
+	__le64 twt;
+	u8 min_twt_dur;
+	__le16 mantissa;
+	u8 channel;
+} __packed;
+
+struct ieee80211_twt_setup {
+	u8 dialog_token;
+	u8 element_id;
+	u8 length;
+	u8 control;
+	u8 params[];
+} __packed;
+
 struct ieee80211_mgmt {
 	__le16 frame_control;
 	__le16 duration;

@@ -1252,6 +1294,10 @@ struct ieee80211_mgmt {
 					__le16 toa_error;
 					u8 variable[0];
 				} __packed ftm;
+				struct {
+					u8 action_code;
+					u8 variable[];
+				} __packed s1g;
 			} u;
 		} __packed action;
 	} u;

@@ -2881,6 +2927,7 @@ enum ieee80211_eid {
 	WLAN_EID_AID_RESPONSE = 211,
 	WLAN_EID_S1G_BCN_COMPAT = 213,
 	WLAN_EID_S1G_SHORT_BCN_INTERVAL = 214,
+	WLAN_EID_S1G_TWT = 216,
 	WLAN_EID_S1G_CAPABILITIES = 217,
 	WLAN_EID_VENDOR_SPECIFIC = 221,
 	WLAN_EID_QOS_PARAMETER = 222,

@@ -2950,6 +2997,7 @@ enum ieee80211_category {
 	WLAN_CATEGORY_FST = 18,
 	WLAN_CATEGORY_UNPROT_DMG = 20,
 	WLAN_CATEGORY_VHT = 21,
+	WLAN_CATEGORY_S1G = 22,
 	WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
 	WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
 };

@@ -3023,6 +3071,20 @@ enum ieee80211_key_len {
 	WLAN_KEY_LEN_BIP_GMAC_256 = 32,
 };
 
+enum ieee80211_s1g_actioncode {
+	WLAN_S1G_AID_SWITCH_REQUEST,
+	WLAN_S1G_AID_SWITCH_RESPONSE,
+	WLAN_S1G_SYNC_CONTROL,
+	WLAN_S1G_STA_INFO_ANNOUNCE,
+	WLAN_S1G_EDCA_PARAM_SET,
+	WLAN_S1G_EL_OPERATION,
+	WLAN_S1G_TWT_SETUP,
+	WLAN_S1G_TWT_TEARDOWN,
+	WLAN_S1G_SECT_GROUP_ID_LIST,
+	WLAN_S1G_SECT_ID_FEEDBACK,
+	WLAN_S1G_TWT_INFORMATION = 11,
+};
+
 #define IEEE80211_WEP_IV_LEN		4
 #define IEEE80211_WEP_ICV_LEN		4
 #define IEEE80211_CCMP_HDR_LEN		8

index d8a1d09a2141..2b55784b9c24 100644
@@ -3919,6 +3919,13 @@ struct ieee80211_prep_tx_info {
  * @set_sar_specs: Update the SAR (TX power) settings.
  * @sta_set_decap_offload: Called to notify the driver when a station is allowed
  *	to use rx decapsulation offload
+ * @add_twt_setup: Update hw with TWT agreement parameters received from the peer.
+ *	This callback allows the hw to check if requested parameters
+ *	are supported and if there is enough room for a new agreement.
+ *	The hw is expected to set agreement result in the req_type field of
+ *	twt structure.
+ * @twt_teardown_request: Update the hw with TWT teardown request received
+ *	from the peer.
  */
 struct ieee80211_ops {
 	void (*tx)(struct ieee80211_hw *hw,

@@ -4242,6 +4249,11 @@ struct ieee80211_ops {
 	void (*sta_set_decap_offload)(struct ieee80211_hw *hw,
 				      struct ieee80211_vif *vif,
 				      struct ieee80211_sta *sta, bool enabled);
+	void (*add_twt_setup)(struct ieee80211_hw *hw,
+			      struct ieee80211_sta *sta,
+			      struct ieee80211_twt_setup *twt);
+	void (*twt_teardown_request)(struct ieee80211_hw *hw,
+				     struct ieee80211_sta *sta, u8 flowid);
 };
 
 /**

index bcb7cc06db3d..aaf81c8ffced 100644
@@ -1447,4 +1447,39 @@ static inline void drv_sta_set_decap_offload(struct ieee80211_local *local,
 	trace_drv_return_void(local);
 }
 
+static inline void drv_add_twt_setup(struct ieee80211_local *local,
+				     struct ieee80211_sub_if_data *sdata,
+				     struct ieee80211_sta *sta,
+				     struct ieee80211_twt_setup *twt)
+{
+	struct ieee80211_twt_params *twt_agrt;
+
+	might_sleep();
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	twt_agrt = (struct ieee80211_twt_params *)twt->params;
+
+	trace_drv_add_twt_setup(local, sta, twt, twt_agrt);
+	local->ops->add_twt_setup(&local->hw, sta, twt);
+	trace_drv_return_void(local);
+}
+
+static inline void drv_twt_teardown_request(struct ieee80211_local *local,
+					    struct ieee80211_sub_if_data *sdata,
+					    struct ieee80211_sta *sta,
+					    u8 flowid)
+{
+	might_sleep();
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	if (!local->ops->twt_teardown_request)
+		return;
+
+	trace_drv_twt_teardown_request(local, sta, flowid);
+	local->ops->twt_teardown_request(&local->hw, sta, flowid);
+	trace_drv_return_void(local);
+}
+
 #endif /* __MAC80211_DRIVER_OPS */

index 22549b95d1aa..ca44cefcad61 100644
@@ -937,6 +937,7 @@ struct ieee80211_sub_if_data {
 
 	struct work_struct work;
 	struct sk_buff_head skb_queue;
+	struct sk_buff_head status_queue;
 
 	u8 needed_rx_chains;
 	enum ieee80211_smps_mode smps_mode;

@@ -2068,6 +2069,11 @@ ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
 
 /* S1G */
 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
+bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
+void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb);
+void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
+				     struct sk_buff *skb);
 
 /* Spectrum management */
 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,

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index bae321ff77f6..5a57a08b66ee 100644
@@ -705,13 +705,26 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
 			/* Check to see if packet is a TDLS teardown packet */
 			if (ieee80211_is_data(hdr->frame_control) &&
 			    (ieee80211_get_tdls_action(skb, hdr_size) ==
-			     WLAN_TDLS_TEARDOWN))
+			     WLAN_TDLS_TEARDOWN)) {
 				ieee80211_tdls_td_tx_handle(local, sdata, skb,
 							    info->flags);
-			else
+			} else if (ieee80211_s1g_is_twt_setup(skb)) {
+				if (!acked) {
+					struct sk_buff *qskb;
+
+					qskb = skb_clone(skb, GFP_ATOMIC);
+					if (qskb) {
+						skb_queue_tail(&sdata->status_queue,
+							       qskb);
+						ieee80211_queue_work(&local->hw,
+								     &sdata->work);
+					}
+				}
+			} else {
 				ieee80211_mgd_conn_tx_status(sdata,
 							     hdr->frame_control,
 							     acked);
+			}
 		}
 
 		rcu_read_unlock();

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index b3ca2ce8eed2..795d36122398 100644
@@ -789,10 +789,8 @@ mt7915_get_stats(struct ieee80211_hw *hw,
 	return 0;
 }
 
-static u64
-mt7915_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+u64 __mt7915_get_tsf(struct ieee80211_hw *hw, struct mt7915_vif *mvif)
 {
-	struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
 	struct mt7915_dev *dev = mt7915_hw_dev(hw);
 	struct mt7915_phy *phy = mt7915_hw_phy(hw);
 	bool band = phy != &dev->phy;

@@ -802,7 +800,7 @@ mt7915_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	} tsf;
 	u16 n;
 
-	mutex_lock(&dev->mt76.mutex);
+	lockdep_assert_held(&dev->mt76.mutex);
 
 	n = mvif->omac_idx > HW_BSSID_MAX ? HW_BSSID_0 : mvif->omac_idx;
 	/* TSF software read */

@@ -811,9 +809,21 @@ mt7915_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	tsf.t32[0] = mt76_rr(dev, MT_LPON_UTTR0(band));
 	tsf.t32[1] = mt76_rr(dev, MT_LPON_UTTR1(band));
 
+	return tsf.t64;
+}
+
+static u64
+mt7915_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+	struct mt7915_dev *dev = mt7915_hw_dev(hw);
+	u64 ret;
+
+	mutex_lock(&dev->mt76.mutex);
+	ret = __mt7915_get_tsf(hw, mvif);
 	mutex_unlock(&dev->mt76.mutex);
 
-	return tsf.t64;
+	return ret;
 }
 
 static void

index cc74dd2c2c72..c2909247cfd4 100644
@@ -273,7 +273,7 @@ extern const struct ieee80211_ops mt7915_ops;
 extern const struct mt76_testmode_ops mt7915_testmode_ops;
 
 u32 mt7915_reg_map(struct mt7915_dev *dev, u32 addr);
-
+u64 __mt7915_get_tsf(struct ieee80211_hw *hw, struct mt7915_vif *mvif);
 int mt7915_register_device(struct mt7915_dev *dev);
 void mt7915_unregister_device(struct mt7915_dev *dev);
 int mt7915_eeprom_init(struct mt7915_dev *dev);

index 50b89d41822a..8bf3d08884f4 100644
@@ -3893,3 +3893,53 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif,
 
 	return ret;
 }
+
+#define TWT_AGRT_TRIGGER	BIT(0)
+#define TWT_AGRT_ANNOUNCE	BIT(1)
+#define TWT_AGRT_PROTECT	BIT(2)
+
+int mt7915_mcu_twt_agrt_update(struct mt7915_dev *dev,
+			       struct mt7915_vif *mvif,
+			       struct mt7915_twt_flow *flow,
+			       int cmd)
+{
+	struct {
+		u8 tbl_idx;
+		u8 cmd;
+		u8 own_mac_idx;
+		u8 flowid; /* 0xff for group id */
+		__le16 peer_id; /* specify the peer_id (msb=0)
+				 * or group_id (msb=1)
+				 */
+		u8 duration; /* 256 us */
+		u8 bss_idx;
+		__le64 start_tsf;
+		__le16 mantissa;
+		u8 exponent;
+		u8 is_ap;
+		u8 agrt_params;
+		u8 rsv[23];
+	} __packed req = {
+		.tbl_idx = flow->id,
+		.cmd = cmd,
+		.own_mac_idx = mvif->omac_idx,
+		.flowid = flow->id,
+		.peer_id = cpu_to_le16(flow->wcid),
+		.duration = flow->duration,
+		.bss_idx = mvif->idx,
+		.start_tsf = cpu_to_le64(flow->tsf),
+		.mantissa = flow->mantissa,
+		.exponent = flow->exp,
+		.is_ap = true,
+	};
+
+	if (flow->protection)
+		req.agrt_params |= TWT_AGRT_PROTECT;
+	if (!flow->flowtype)
+		req.agrt_params |= TWT_AGRT_ANNOUNCE;
+	if (flow->trigger)
+		req.agrt_params |= TWT_AGRT_TRIGGER;
+
+	return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(TWT_AGRT_UPDATE),
+				 &req, sizeof(req), true);
+}

index eda17a94ac58..deec516e905a 100644
@@ -275,6 +275,7 @@ enum {
 	MCU_EXT_CMD_MWDS_SUPPORT = 0x80,
 	MCU_EXT_CMD_SET_SER_TRIGGER = 0x81,
 	MCU_EXT_CMD_SCS_CTRL = 0x82,
+	MCU_EXT_CMD_TWT_AGRT_UPDATE = 0x94,
 	MCU_EXT_CMD_FW_DBG_CTRL = 0x95,
 	MCU_EXT_CMD_SET_RDD_TH = 0x9d,
 	MCU_EXT_CMD_MURU_CTRL = 0x9f,

@@ -284,6 +285,14 @@ enum {
 	MCU_EXT_CMD_PHY_STAT_INFO = 0xad,
 };
 
+enum {
+	MCU_TWT_AGRT_ADD,
+	MCU_TWT_AGRT_MODIFY,
+	MCU_TWT_AGRT_DELETE,
+	MCU_TWT_AGRT_TEARDOWN,
+	MCU_TWT_AGRT_GET_TSF,
+};
+
 enum {
 	MCU_WA_PARAM_CMD_QUERY,
 	MCU_WA_PARAM_CMD_SET,

index c2909247cfd4..8129f54c2f3f 100644
@@ -67,6 +67,21 @@ struct mt7915_sta_key_conf {
 	u8 key[16];
 };
 
+struct mt7915_twt_flow {
+	struct list_head list;
+	u64 start_tsf;
+	u64 tsf;
+	u32 duration;
+	u16 wcid;
+	__le16 mantissa;
+	u8 exp;
+	u8 id;
+	u8 protection:1;
+	u8 flowtype:1;
+	u8 trigger:1;
+	u8 sched:1;
+};
+
 struct mt7915_sta {
 	struct mt76_wcid wcid; /* must be first */
 

@@ -286,6 +301,10 @@ int mt7915_dma_init(struct mt7915_dev *dev);
 void mt7915_dma_prefetch(struct mt7915_dev *dev);
 void mt7915_dma_cleanup(struct mt7915_dev *dev);
 int mt7915_mcu_init(struct mt7915_dev *dev);
+int mt7915_mcu_twt_agrt_update(struct mt7915_dev *dev,
+			       struct mt7915_vif *mvif,
+			       struct mt7915_twt_flow *flow,
+			       int cmd);
 int mt7915_mcu_add_dev_info(struct mt7915_phy *phy,
 			    struct ieee80211_vif *vif, bool enable);
 int mt7915_mcu_add_bss_info(struct mt7915_phy *phy,

index ba41ed38a4c5..ca9d0380d42b 100644
@@ -823,6 +823,7 @@ int mt7915_register_device(struct mt7915_dev *dev)
 	INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7915_mac_work);
 	INIT_LIST_HEAD(&dev->sta_rc_list);
 	INIT_LIST_HEAD(&dev->sta_poll_list);
+	INIT_LIST_HEAD(&dev->twt_list);
 	spin_lock_init(&dev->sta_poll_lock);
 
 	init_waitqueue_head(&dev->reset_wait);

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index 795d36122398..b317b9781b5a 100644
@@ -640,6 +640,7 @@ void mt7915_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 {
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
 	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+	int i;
 
 	mt7915_mcu_add_sta_adv(dev, vif, sta, false);
 	mt7915_mcu_add_sta(dev, vif, sta, false);

@@ -647,6 +648,9 @@ void mt7915_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	mt7915_mac_wtbl_update(dev, msta->wcid.idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 
+	for (i = 0; i < ARRAY_SIZE(msta->twt.flow); i++)
+		mt7915_mac_twt_teardown_flow(dev, msta, i);
+
 	spin_lock_bh(&dev->sta_poll_lock);
 	if (!list_empty(&msta->poll_list))
 		list_del_init(&msta->poll_list);

@@ -1038,6 +1042,19 @@ static void mt7915_sta_set_decap_offload(struct ieee80211_hw *hw,
 	mt7915_mcu_sta_update_hdr_trans(dev, vif, sta);
 }
 
+static void
+mt7915_twt_teardown_request(struct ieee80211_hw *hw,
+			    struct ieee80211_sta *sta,
+			    u8 flowid)
+{
+	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+	struct mt7915_dev *dev = mt7915_hw_dev(hw);
+
+	mutex_lock(&dev->mt76.mutex);
+	mt7915_mac_twt_teardown_flow(dev, msta, flowid);
+	mutex_unlock(&dev->mt76.mutex);
+}
+
 const struct ieee80211_ops mt7915_ops = {
 	.tx = mt7915_tx,
 	.start = mt7915_start,

@@ -1073,6 +1090,8 @@ const struct ieee80211_ops mt7915_ops = {
 	.sta_statistics = mt7915_sta_statistics,
 	.sta_set_4addr = mt7915_sta_set_4addr,
 	.sta_set_decap_offload = mt7915_sta_set_decap_offload,
+	.add_twt_setup = mt7915_mac_add_twt_setup,
+	.twt_teardown_request = mt7915_twt_teardown_request,
 	CFG80211_TESTMODE_CMD(mt76_testmode_cmd)
 	CFG80211_TESTMODE_DUMP(mt76_testmode_dump)
 #ifdef CONFIG_MAC80211_DEBUGFS

index 8129f54c2f3f..7f9200d00b65 100644
@@ -41,6 +41,9 @@
 
 #define MT7915_SKU_RATE_NUM		161
 
+#define MT7915_MAX_TWT_AGRT		16
+#define MT7915_MAX_STA_TWT_AGRT		8
+
 struct mt7915_vif;
 struct mt7915_sta;
 struct mt7915_dfs_pulse;

@@ -96,6 +99,11 @@ struct mt7915_sta {
 	unsigned long ampdu_state;
 
 	struct mt7915_sta_key_conf bip;
+
+	struct {
+		u8 flowid_mask;
+		struct mt7915_twt_flow flow[MT7915_MAX_STA_TWT_AGRT];
+	} twt;
 };
 
 struct mt7915_vif {

@@ -194,6 +202,7 @@ struct mt7915_dev {
 
 	struct list_head sta_rc_list;
 	struct list_head sta_poll_list;
+	struct list_head twt_list;
 	spinlock_t sta_poll_lock;
 
 	u32 hw_pattern;

@@ -204,6 +213,8 @@ struct mt7915_dev {
 	bool ibf;
 
 	void *cal;
+
+	u8 n_twt_agrt;
 };
 
 enum {

@@ -416,6 +427,12 @@ void mt7915_mac_work(struct work_struct *work);
 void mt7915_mac_reset_work(struct work_struct *work);
 void mt7915_mac_sta_rc_work(struct work_struct *work);
 int mt7915_mmio_init(struct mt76_dev *mdev, void __iomem *mem_base, int irq);
+void mt7915_mac_twt_teardown_flow(struct mt7915_dev *dev,
+				  struct mt7915_sta *msta,
+				  u8 flowid);
+void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
+			      struct ieee80211_sta *sta,
+			      struct ieee80211_twt_setup *twt);
 int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 			  enum mt76_txq_id qid, struct mt76_wcid *wcid,
 			  struct ieee80211_sta *sta,

index ca9d0380d42b..11bd9b4686ed 100644
@@ -699,6 +699,8 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 
 		switch (i) {
 		case NL80211_IFTYPE_AP:
+			he_cap_elem->mac_cap_info[0] |=
+				IEEE80211_HE_MAC_CAP0_TWT_RES;
 			he_cap_elem->mac_cap_info[2] |=
 				IEEE80211_HE_MAC_CAP2_BSR;
 			he_cap_elem->mac_cap_info[4] |=

index d9d18f662039..655e4f5171e4 100644
@@ -335,6 +335,32 @@ mt7915_read_rate_txpower(struct seq_file *s, void *data)
 	return 0;
 }
 
+static int
+mt7915_twt_stats(struct seq_file *s, void *data)
+{
+	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	struct mt7915_twt_flow *iter;
+
+	rcu_read_lock();
+
+	seq_puts(s, "     wcid |       id |    flags |      exp | mantissa");
+	seq_puts(s, " | duration |            tsf |\n");
+	list_for_each_entry_rcu(iter, &dev->twt_list, list)
+		seq_printf(s,
+			"%9d | %8d | %5c%c%c%c | %8d | %8d | %8d | %14lld |\n",
+			iter->wcid, iter->id,
+			iter->sched ? 's' : 'u',
+			iter->protection ? 'p' : '-',
+			iter->trigger ? 't' : '-',
+			iter->flowtype ? '-' : 'a',
+			iter->exp, iter->mantissa,
+			iter->duration, iter->tsf);
+
+	rcu_read_unlock();
+
+	return 0;
+}
+
 int mt7915_init_debugfs(struct mt7915_dev *dev)
 {
 	struct dentry *dir;

@@ -352,6 +378,8 @@ int mt7915_init_debugfs(struct mt7915_dev *dev)
 	debugfs_create_file("implicit_txbf", 0600, dir, dev,
 			    &fops_implicit_txbf);
 	debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "twt_stats", dir,
+				    mt7915_twt_stats);
 	/* test knobs */
 	debugfs_create_file("radar_trigger", 0200, dir, dev,
 			    &fops_radar_trigger);