1 /* SPDX-License-Identifier: ISC */
2 /*
3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4  * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
5  */
6 
7 #ifndef __MT76x02_H
8 #define __MT76x02_H
9 
10 #include <linux/kfifo.h>
11 
12 #include "mt76.h"
13 #include "mt76x02_regs.h"
14 #include "mt76x02_mac.h"
15 #include "mt76x02_dfs.h"
16 #include "mt76x02_dma.h"
17 
18 #define MT76x02_TX_RING_SIZE	512
19 #define MT76x02_PSD_RING_SIZE	128
20 #define MT76x02_N_WCIDS 128
21 #define MT_CALIBRATE_INTERVAL	HZ
22 #define MT_MAC_WORK_INTERVAL	(HZ / 10)
23 
24 #define MT_WATCHDOG_TIME	(HZ / 10)
25 #define MT_TX_HANG_TH		10
26 
27 #define MT_MAX_CHAINS		2
28 struct mt76x02_rx_freq_cal {
29 	s8 high_gain[MT_MAX_CHAINS];
30 	s8 rssi_offset[MT_MAX_CHAINS];
31 	s8 lna_gain;
32 	u32 mcu_gain;
33 	s16 temp_offset;
34 	u8 freq_offset;
35 };
36 
37 struct mt76x02_calibration {
38 	struct mt76x02_rx_freq_cal rx;
39 
40 	u8 agc_gain_init[MT_MAX_CHAINS];
41 	u8 agc_gain_cur[MT_MAX_CHAINS];
42 
43 	u16 false_cca;
44 	s8 avg_rssi_all;
45 	s8 agc_gain_adjust;
46 	s8 agc_lowest_gain;
47 	s8 low_gain;
48 
49 	s8 temp_vco;
50 	s8 temp;
51 
52 	bool init_cal_done;
53 	bool tssi_cal_done;
54 	bool tssi_comp_pending;
55 	bool dpd_cal_done;
56 	bool channel_cal_done;
57 	bool gain_init_done;
58 
59 	int tssi_target;
60 	s8 tssi_dc;
61 };
62 
63 struct mt76x02_beacon_ops {
64 	unsigned int nslots;
65 	unsigned int slot_size;
66 	void (*pre_tbtt_enable)(struct mt76x02_dev *dev, bool en);
67 	void (*beacon_enable)(struct mt76x02_dev *dev, bool en);
68 };
69 
70 #define mt76x02_beacon_enable(dev, enable)	\
71 	(dev)->beacon_ops->beacon_enable(dev, enable)
72 #define mt76x02_pre_tbtt_enable(dev, enable)	\
73 	(dev)->beacon_ops->pre_tbtt_enable(dev, enable)
74 
75 struct mt76x02_dev {
76 	union { /* must be first */
77 		struct mt76_dev mt76;
78 		struct mt76_phy mphy;
79 	};
80 
81 	struct mac_address macaddr_list[8];
82 
83 	struct mutex phy_mutex;
84 
85 	u8 txdone_seq;
86 	DECLARE_KFIFO_PTR(txstatus_fifo, struct mt76x02_tx_status);
87 	spinlock_t txstatus_fifo_lock;
88 	u32 tx_airtime;
89 	u32 ampdu_ref;
90 
91 	struct sk_buff *rx_head;
92 
93 	struct delayed_work cal_work;
94 	struct delayed_work wdt_work;
95 
96 	struct hrtimer pre_tbtt_timer;
97 	struct work_struct pre_tbtt_work;
98 
99 	const struct mt76x02_beacon_ops *beacon_ops;
100 
101 	u8 beacon_data_count;
102 
103 	u8 tbtt_count;
104 
105 	u32 tx_hang_reset;
106 	u8 tx_hang_check;
107 	u8 mcu_timeout;
108 
109 	struct mt76x02_calibration cal;
110 
111 	int txpower_conf;
112 	s8 target_power;
113 	s8 target_power_delta[2];
114 	bool enable_tpc;
115 
116 	bool no_2ghz;
117 
118 	s16 coverage_class;
119 	u8 slottime;
120 
121 	struct mt76x02_dfs_pattern_detector dfs_pd;
122 
123 	/* edcca monitor */
124 	unsigned long ed_trigger_timeout;
125 	bool ed_tx_blocked;
126 	bool ed_monitor;
127 	u8 ed_monitor_enabled;
128 	u8 ed_monitor_learning;
129 	u8 ed_trigger;
130 	u8 ed_silent;
131 	ktime_t ed_time;
132 };
133 
134 extern struct ieee80211_rate mt76x02_rates[12];
135 
136 void mt76x02_init_device(struct mt76x02_dev *dev);
137 void mt76x02_configure_filter(struct ieee80211_hw *hw,
138 			      unsigned int changed_flags,
139 			      unsigned int *total_flags, u64 multicast);
140 int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
141 		    struct ieee80211_sta *sta);
142 void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
143 			struct ieee80211_sta *sta);
144 
145 void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev);
146 
147 int mt76x02_add_interface(struct ieee80211_hw *hw,
148 			  struct ieee80211_vif *vif);
149 void mt76x02_remove_interface(struct ieee80211_hw *hw,
150 			      struct ieee80211_vif *vif);
151 
152 int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
153 			 struct ieee80211_ampdu_params *params);
154 int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
155 		    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
156 		    struct ieee80211_key_conf *key);
157 int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
158 		    u16 queue, const struct ieee80211_tx_queue_params *params);
159 void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
160 				 struct ieee80211_vif *vif,
161 				 struct ieee80211_sta *sta);
162 s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,
163 				const struct ieee80211_tx_rate *rate);
164 s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr,
165 			    s8 max_txpwr_adj);
166 void mt76x02_wdt_work(struct work_struct *work);
167 void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr);
168 void mt76x02_set_tx_ackto(struct mt76x02_dev *dev);
169 void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
170 				s16 coverage_class);
171 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val);
172 void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len);
173 bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update);
174 void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
175 			  struct sk_buff *skb);
176 void mt76x02_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q);
177 irqreturn_t mt76x02_irq_handler(int irq, void *dev_instance);
178 void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
179 		struct sk_buff *skb);
180 int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi,
181 			   enum mt76_txq_id qid, struct mt76_wcid *wcid,
182 			   struct ieee80211_sta *sta,
183 			   struct mt76_tx_info *tx_info);
184 void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
185 			      struct ieee80211_vif *vif);
186 void mt76x02_sta_ps(struct mt76_dev *dev, struct ieee80211_sta *sta, bool ps);
187 void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
188 			      struct ieee80211_vif *vif,
189 			      struct ieee80211_bss_conf *info, u32 changed);
190 void mt76x02_reconfig_complete(struct ieee80211_hw *hw,
191 			       enum ieee80211_reconfig_type reconfig_type);
192 
193 struct beacon_bc_data {
194 	struct mt76x02_dev *dev;
195 	struct sk_buff_head q;
196 	struct sk_buff *tail[8];
197 };
198 
199 void mt76x02_init_beacon_config(struct mt76x02_dev *dev);
200 void mt76x02e_init_beacon_config(struct mt76x02_dev *dev);
201 void mt76x02_resync_beacon_timer(struct mt76x02_dev *dev);
202 void mt76x02_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif);
203 void mt76x02_enqueue_buffered_bc(struct mt76x02_dev *dev,
204 				 struct beacon_bc_data *data,
205 				 int max_nframes);
206 
207 void mt76x02_mac_start(struct mt76x02_dev *dev);
208 
209 void mt76x02_init_debugfs(struct mt76x02_dev *dev);
210 
is_mt76x0(struct mt76x02_dev * dev)211 static inline bool is_mt76x0(struct mt76x02_dev *dev)
212 {
213 	return mt76_chip(&dev->mt76) == 0x7610 ||
214 	       mt76_chip(&dev->mt76) == 0x7630 ||
215 	       mt76_chip(&dev->mt76) == 0x7650;
216 }
217 
is_mt76x2(struct mt76x02_dev * dev)218 static inline bool is_mt76x2(struct mt76x02_dev *dev)
219 {
220 	return mt76_chip(&dev->mt76) == 0x7612 ||
221 	       mt76_chip(&dev->mt76) == 0x7632 ||
222 	       mt76_chip(&dev->mt76) == 0x7662 ||
223 	       mt76_chip(&dev->mt76) == 0x7602;
224 }
225 
mt76x02_irq_enable(struct mt76x02_dev * dev,u32 mask)226 static inline void mt76x02_irq_enable(struct mt76x02_dev *dev, u32 mask)
227 {
228 	mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, 0, mask);
229 }
230 
mt76x02_irq_disable(struct mt76x02_dev * dev,u32 mask)231 static inline void mt76x02_irq_disable(struct mt76x02_dev *dev, u32 mask)
232 {
233 	mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
234 }
235 
236 static inline bool
mt76x02_wait_for_txrx_idle(struct mt76_dev * dev)237 mt76x02_wait_for_txrx_idle(struct mt76_dev *dev)
238 {
239 	return __mt76_poll_msec(dev, MT_MAC_STATUS,
240 				MT_MAC_STATUS_TX | MT_MAC_STATUS_RX,
241 				0, 100);
242 }
243 
244 static inline struct mt76x02_sta *
mt76x02_rx_get_sta(struct mt76_dev * dev,u8 idx)245 mt76x02_rx_get_sta(struct mt76_dev *dev, u8 idx)
246 {
247 	struct mt76_wcid *wcid;
248 
249 	if (idx >= MT76x02_N_WCIDS)
250 		return NULL;
251 
252 	wcid = rcu_dereference(dev->wcid[idx]);
253 	if (!wcid)
254 		return NULL;
255 
256 	return container_of(wcid, struct mt76x02_sta, wcid);
257 }
258 
259 static inline struct mt76_wcid *
mt76x02_rx_get_sta_wcid(struct mt76x02_sta * sta,bool unicast)260 mt76x02_rx_get_sta_wcid(struct mt76x02_sta *sta, bool unicast)
261 {
262 	if (!sta)
263 		return NULL;
264 
265 	if (unicast)
266 		return &sta->wcid;
267 	else
268 		return &sta->vif->group_wcid;
269 }
270 
271 #endif /* __MT76x02_H */
272