1 /*
2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3  * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
4  *
5  * Permission to use, copy, modify, and/or distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #ifndef __MT76x02_H
19 #define __MT76x02_H
20 
21 #include <linux/kfifo.h>
22 
23 #include "mt76.h"
24 #include "mt76x02_regs.h"
25 #include "mt76x02_mac.h"
26 #include "mt76x02_dfs.h"
27 #include "mt76x02_dma.h"
28 
29 #define MT_CALIBRATE_INTERVAL	HZ
30 #define MT_MAC_WORK_INTERVAL	(HZ / 10)
31 
32 #define MT_WATCHDOG_TIME	(HZ / 10)
33 #define MT_TX_HANG_TH		10
34 
35 #define MT_MAX_CHAINS		2
36 struct mt76x02_rx_freq_cal {
37 	s8 high_gain[MT_MAX_CHAINS];
38 	s8 rssi_offset[MT_MAX_CHAINS];
39 	s8 lna_gain;
40 	u32 mcu_gain;
41 	s16 temp_offset;
42 	u8 freq_offset;
43 };
44 
45 struct mt76x02_calibration {
46 	struct mt76x02_rx_freq_cal rx;
47 
48 	u8 agc_gain_init[MT_MAX_CHAINS];
49 	u8 agc_gain_cur[MT_MAX_CHAINS];
50 
51 	u16 false_cca;
52 	s8 avg_rssi_all;
53 	s8 agc_gain_adjust;
54 	s8 agc_lowest_gain;
55 	s8 low_gain;
56 
57 	s8 temp_vco;
58 	s8 temp;
59 
60 	bool init_cal_done;
61 	bool tssi_cal_done;
62 	bool tssi_comp_pending;
63 	bool dpd_cal_done;
64 	bool channel_cal_done;
65 	bool gain_init_done;
66 
67 	int tssi_target;
68 	s8 tssi_dc;
69 };
70 
71 struct mt76x02_beacon_ops {
72 	unsigned int nslots;
73 	unsigned int slot_size;
74 	void (*pre_tbtt_enable) (struct mt76x02_dev *, bool);
75 	void (*beacon_enable) (struct mt76x02_dev *, bool);
76 };
77 
78 struct mt76x02_dev {
79 	struct mt76_dev mt76; /* must be first */
80 
81 	struct mac_address macaddr_list[8];
82 
83 	struct mutex phy_mutex;
84 
85 	u16 vif_mask;
86 
87 	u8 txdone_seq;
88 	DECLARE_KFIFO_PTR(txstatus_fifo, struct mt76x02_tx_status);
89 	spinlock_t txstatus_fifo_lock;
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 	u32 aggr_stats[32];
102 
103 	struct sk_buff *beacons[8];
104 	u8 beacon_data_mask;
105 
106 	u8 tbtt_count;
107 
108 	u32 tx_hang_reset;
109 	u8 tx_hang_check;
110 	u8 mcu_timeout;
111 
112 	struct mt76x02_calibration cal;
113 
114 	s8 target_power;
115 	s8 target_power_delta[2];
116 	bool enable_tpc;
117 
118 	bool no_2ghz;
119 
120 	u8 coverage_class;
121 	u8 slottime;
122 
123 	struct mt76x02_dfs_pattern_detector dfs_pd;
124 
125 	/* edcca monitor */
126 	unsigned long ed_trigger_timeout;
127 	bool ed_tx_blocked;
128 	bool ed_monitor;
129 	u8 ed_monitor_enabled;
130 	u8 ed_monitor_learning;
131 	u8 ed_trigger;
132 	u8 ed_silent;
133 	ktime_t ed_time;
134 };
135 
136 extern struct ieee80211_rate mt76x02_rates[12];
137 
138 void mt76x02_init_device(struct mt76x02_dev *dev);
139 void mt76x02_configure_filter(struct ieee80211_hw *hw,
140 			     unsigned int changed_flags,
141 			     unsigned int *total_flags, u64 multicast);
142 int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
143 		    struct ieee80211_sta *sta);
144 void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
145 			struct ieee80211_sta *sta);
146 
147 void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev);
148 
149 int mt76x02_add_interface(struct ieee80211_hw *hw,
150 			 struct ieee80211_vif *vif);
151 void mt76x02_remove_interface(struct ieee80211_hw *hw,
152 			     struct ieee80211_vif *vif);
153 
154 int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
155 			struct ieee80211_ampdu_params *params);
156 int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
157 		   struct ieee80211_vif *vif, struct ieee80211_sta *sta,
158 		   struct ieee80211_key_conf *key);
159 int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
160 		   u16 queue, const struct ieee80211_tx_queue_params *params);
161 void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
162 				struct ieee80211_vif *vif,
163 				struct ieee80211_sta *sta);
164 s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,
165 				const struct ieee80211_tx_rate *rate);
166 s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr,
167 			    s8 max_txpwr_adj);
168 void mt76x02_wdt_work(struct work_struct *work);
169 void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr);
170 void mt76x02_set_tx_ackto(struct mt76x02_dev *dev);
171 void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
172 				s16 coverage_class);
173 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val);
174 void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len);
175 bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update);
176 void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
177 			  struct sk_buff *skb);
178 void mt76x02_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q);
179 irqreturn_t mt76x02_irq_handler(int irq, void *dev_instance);
180 void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
181 		struct sk_buff *skb);
182 int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi,
183 			   enum mt76_txq_id qid, struct mt76_wcid *wcid,
184 			   struct ieee80211_sta *sta,
185 			   struct mt76_tx_info *tx_info);
186 void mt76x02_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
187 		     const u8 *mac);
188 void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
189 			      struct ieee80211_vif *vif);
190 void mt76x02_sta_ps(struct mt76_dev *dev, struct ieee80211_sta *sta, bool ps);
191 void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
192 			      struct ieee80211_vif *vif,
193 			      struct ieee80211_bss_conf *info, u32 changed);
194 
195 struct beacon_bc_data {
196 	struct mt76x02_dev *dev;
197 	struct sk_buff_head q;
198 	struct sk_buff *tail[8];
199 };
200 void mt76x02_init_beacon_config(struct mt76x02_dev *dev);
201 void mt76x02e_init_beacon_config(struct mt76x02_dev *dev);
202 void mt76x02_resync_beacon_timer(struct mt76x02_dev *dev);
203 void mt76x02_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif);
204 void mt76x02_enqueue_buffered_bc(struct mt76x02_dev *dev,
205 				 struct beacon_bc_data *data,
206 				 int max_nframes);
207 
208 void mt76x02_mac_start(struct mt76x02_dev *dev);
209 
210 void mt76x02_init_debugfs(struct mt76x02_dev *dev);
211 
212 static inline bool is_mt76x0(struct mt76x02_dev *dev)
213 {
214 	return mt76_chip(&dev->mt76) == 0x7610 ||
215 	       mt76_chip(&dev->mt76) == 0x7630 ||
216 	       mt76_chip(&dev->mt76) == 0x7650;
217 }
218 
219 static inline bool is_mt76x2(struct mt76x02_dev *dev)
220 {
221 	return mt76_chip(&dev->mt76) == 0x7612 ||
222 	       mt76_chip(&dev->mt76) == 0x7662 ||
223 	       mt76_chip(&dev->mt76) == 0x7602;
224 }
225 
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 
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
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 *
245 mt76x02_rx_get_sta(struct mt76_dev *dev, u8 idx)
246 {
247 	struct mt76_wcid *wcid;
248 
249 	if (idx >= ARRAY_SIZE(dev->wcid))
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 *
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