1 // SPDX-License-Identifier: ISC
2 
3 #include <linux/etherdevice.h>
4 #include <linux/platform_device.h>
5 #include <linux/pci.h>
6 #include <linux/module.h>
7 #include "mt7603.h"
8 #include "mac.h"
9 #include "eeprom.h"
10 
11 static int
12 mt7603_start(struct ieee80211_hw *hw)
13 {
14 	struct mt7603_dev *dev = hw->priv;
15 
16 	mt7603_mac_reset_counters(dev);
17 	mt7603_mac_start(dev);
18 	dev->mphy.survey_time = ktime_get_boottime();
19 	set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
20 	mt7603_mac_work(&dev->mphy.mac_work.work);
21 
22 	return 0;
23 }
24 
25 static void
26 mt7603_stop(struct ieee80211_hw *hw)
27 {
28 	struct mt7603_dev *dev = hw->priv;
29 
30 	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
31 	cancel_delayed_work_sync(&dev->mphy.mac_work);
32 	mt7603_mac_stop(dev);
33 }
34 
35 static int
36 mt7603_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
37 {
38 	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
39 	struct mt7603_dev *dev = hw->priv;
40 	struct mt76_txq *mtxq;
41 	u8 bc_addr[ETH_ALEN];
42 	int idx;
43 	int ret = 0;
44 
45 	mutex_lock(&dev->mt76.mutex);
46 
47 	mvif->idx = ffs(~dev->mt76.vif_mask) - 1;
48 	if (mvif->idx >= MT7603_MAX_INTERFACES) {
49 		ret = -ENOSPC;
50 		goto out;
51 	}
52 
53 	mt76_wr(dev, MT_MAC_ADDR0(mvif->idx),
54 		get_unaligned_le32(vif->addr));
55 	mt76_wr(dev, MT_MAC_ADDR1(mvif->idx),
56 		(get_unaligned_le16(vif->addr + 4) |
57 		 MT_MAC_ADDR1_VALID));
58 
59 	if (vif->type == NL80211_IFTYPE_AP) {
60 		mt76_wr(dev, MT_BSSID0(mvif->idx),
61 			get_unaligned_le32(vif->addr));
62 		mt76_wr(dev, MT_BSSID1(mvif->idx),
63 			(get_unaligned_le16(vif->addr + 4) |
64 			 MT_BSSID1_VALID));
65 	}
66 
67 	idx = MT7603_WTBL_RESERVED - 1 - mvif->idx;
68 	dev->mt76.vif_mask |= BIT(mvif->idx);
69 	INIT_LIST_HEAD(&mvif->sta.poll_list);
70 	mvif->sta.wcid.idx = idx;
71 	mvif->sta.wcid.hw_key_idx = -1;
72 	mt76_packet_id_init(&mvif->sta.wcid);
73 
74 	eth_broadcast_addr(bc_addr);
75 	mt7603_wtbl_init(dev, idx, mvif->idx, bc_addr);
76 
77 	mtxq = (struct mt76_txq *)vif->txq->drv_priv;
78 	mtxq->wcid = &mvif->sta.wcid;
79 	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
80 
81 out:
82 	mutex_unlock(&dev->mt76.mutex);
83 
84 	return ret;
85 }
86 
87 static void
88 mt7603_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
89 {
90 	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
91 	struct mt7603_sta *msta = &mvif->sta;
92 	struct mt7603_dev *dev = hw->priv;
93 	int idx = msta->wcid.idx;
94 
95 	mt76_wr(dev, MT_MAC_ADDR0(mvif->idx), 0);
96 	mt76_wr(dev, MT_MAC_ADDR1(mvif->idx), 0);
97 	mt76_wr(dev, MT_BSSID0(mvif->idx), 0);
98 	mt76_wr(dev, MT_BSSID1(mvif->idx), 0);
99 	mt7603_beacon_set_timer(dev, mvif->idx, 0);
100 
101 	rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
102 
103 	spin_lock_bh(&dev->sta_poll_lock);
104 	if (!list_empty(&msta->poll_list))
105 		list_del_init(&msta->poll_list);
106 	spin_unlock_bh(&dev->sta_poll_lock);
107 
108 	mutex_lock(&dev->mt76.mutex);
109 	dev->mt76.vif_mask &= ~BIT(mvif->idx);
110 	mutex_unlock(&dev->mt76.mutex);
111 
112 	mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid);
113 }
114 
115 void mt7603_init_edcca(struct mt7603_dev *dev)
116 {
117 	/* Set lower signal level to -65dBm */
118 	mt76_rmw_field(dev, MT_RXTD(8), MT_RXTD_8_LOWER_SIGNAL, 0x23);
119 
120 	/* clear previous energy detect monitor results */
121 	mt76_rr(dev, MT_MIB_STAT_ED);
122 
123 	if (dev->ed_monitor)
124 		mt76_set(dev, MT_MIB_CTL, MT_MIB_CTL_ED_TIME);
125 	else
126 		mt76_clear(dev, MT_MIB_CTL, MT_MIB_CTL_ED_TIME);
127 
128 	dev->ed_strict_mode = 0xff;
129 	dev->ed_strong_signal = 0;
130 	dev->ed_time = ktime_get_boottime();
131 
132 	mt7603_edcca_set_strict(dev, false);
133 }
134 
135 static int
136 mt7603_set_channel(struct ieee80211_hw *hw, struct cfg80211_chan_def *def)
137 {
138 	struct mt7603_dev *dev = hw->priv;
139 	u8 *rssi_data = (u8 *)dev->mt76.eeprom.data;
140 	int idx, ret;
141 	u8 bw = MT_BW_20;
142 	bool failed = false;
143 
144 	ieee80211_stop_queues(hw);
145 	cancel_delayed_work_sync(&dev->mphy.mac_work);
146 	tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
147 
148 	mutex_lock(&dev->mt76.mutex);
149 	set_bit(MT76_RESET, &dev->mphy.state);
150 
151 	mt7603_beacon_set_timer(dev, -1, 0);
152 	mt76_set_channel(&dev->mphy);
153 	mt7603_mac_stop(dev);
154 
155 	if (def->width == NL80211_CHAN_WIDTH_40)
156 		bw = MT_BW_40;
157 
158 	dev->mphy.chandef = *def;
159 	mt76_rmw_field(dev, MT_AGG_BWCR, MT_AGG_BWCR_BW, bw);
160 	ret = mt7603_mcu_set_channel(dev);
161 	if (ret) {
162 		failed = true;
163 		goto out;
164 	}
165 
166 	if (def->chan->band == NL80211_BAND_5GHZ) {
167 		idx = 1;
168 		rssi_data += MT_EE_RSSI_OFFSET_5G;
169 	} else {
170 		idx = 0;
171 		rssi_data += MT_EE_RSSI_OFFSET_2G;
172 	}
173 
174 	memcpy(dev->rssi_offset, rssi_data, sizeof(dev->rssi_offset));
175 
176 	idx |= (def->chan -
177 		mt76_hw(dev)->wiphy->bands[def->chan->band]->channels) << 1;
178 	mt76_wr(dev, MT_WF_RMAC_CH_FREQ, idx);
179 	mt7603_mac_set_timing(dev);
180 	mt7603_mac_start(dev);
181 
182 	clear_bit(MT76_RESET, &dev->mphy.state);
183 
184 	mt76_txq_schedule_all(&dev->mphy);
185 
186 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work,
187 				     msecs_to_jiffies(MT7603_WATCHDOG_TIME));
188 
189 	/* reset channel stats */
190 	mt76_clear(dev, MT_MIB_CTL, MT_MIB_CTL_READ_CLR_DIS);
191 	mt76_set(dev, MT_MIB_CTL,
192 		 MT_MIB_CTL_CCA_NAV_TX | MT_MIB_CTL_PSCCA_TIME);
193 	mt76_rr(dev, MT_MIB_STAT_CCA);
194 	mt7603_cca_stats_reset(dev);
195 
196 	dev->mphy.survey_time = ktime_get_boottime();
197 
198 	mt7603_init_edcca(dev);
199 
200 out:
201 	if (!(mt76_hw(dev)->conf.flags & IEEE80211_CONF_OFFCHANNEL))
202 		mt7603_beacon_set_timer(dev, -1, dev->mt76.beacon_int);
203 	mutex_unlock(&dev->mt76.mutex);
204 
205 	tasklet_enable(&dev->mt76.pre_tbtt_tasklet);
206 
207 	if (failed)
208 		mt7603_mac_work(&dev->mphy.mac_work.work);
209 
210 	ieee80211_wake_queues(hw);
211 
212 	return ret;
213 }
214 
215 static int mt7603_set_sar_specs(struct ieee80211_hw *hw,
216 				const struct cfg80211_sar_specs *sar)
217 {
218 	struct mt7603_dev *dev = hw->priv;
219 	struct mt76_phy *mphy = &dev->mphy;
220 	int err;
221 
222 	if (!cfg80211_chandef_valid(&mphy->chandef))
223 		return -EINVAL;
224 
225 	err = mt76_init_sar_power(hw, sar);
226 	if (err)
227 		return err;
228 
229 	return mt7603_set_channel(hw, &mphy->chandef);
230 }
231 
232 static int
233 mt7603_config(struct ieee80211_hw *hw, u32 changed)
234 {
235 	struct mt7603_dev *dev = hw->priv;
236 	int ret = 0;
237 
238 	if (changed & (IEEE80211_CONF_CHANGE_CHANNEL |
239 		       IEEE80211_CONF_CHANGE_POWER))
240 		ret = mt7603_set_channel(hw, &hw->conf.chandef);
241 
242 	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
243 		mutex_lock(&dev->mt76.mutex);
244 
245 		if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
246 			dev->rxfilter |= MT_WF_RFCR_DROP_OTHER_UC;
247 		else
248 			dev->rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;
249 
250 		mt76_wr(dev, MT_WF_RFCR, dev->rxfilter);
251 
252 		mutex_unlock(&dev->mt76.mutex);
253 	}
254 
255 	return ret;
256 }
257 
258 static void
259 mt7603_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
260 			unsigned int *total_flags, u64 multicast)
261 {
262 	struct mt7603_dev *dev = hw->priv;
263 	u32 flags = 0;
264 
265 #define MT76_FILTER(_flag, _hw) do { \
266 		flags |= *total_flags & FIF_##_flag;			\
267 		dev->rxfilter &= ~(_hw);				\
268 		dev->rxfilter |= !(flags & FIF_##_flag) * (_hw);	\
269 	} while (0)
270 
271 	dev->rxfilter &= ~(MT_WF_RFCR_DROP_OTHER_BSS |
272 			   MT_WF_RFCR_DROP_OTHER_BEACON |
273 			   MT_WF_RFCR_DROP_FRAME_REPORT |
274 			   MT_WF_RFCR_DROP_PROBEREQ |
275 			   MT_WF_RFCR_DROP_MCAST_FILTERED |
276 			   MT_WF_RFCR_DROP_MCAST |
277 			   MT_WF_RFCR_DROP_BCAST |
278 			   MT_WF_RFCR_DROP_DUPLICATE |
279 			   MT_WF_RFCR_DROP_A2_BSSID |
280 			   MT_WF_RFCR_DROP_UNWANTED_CTL |
281 			   MT_WF_RFCR_DROP_STBC_MULTI);
282 
283 	MT76_FILTER(OTHER_BSS, MT_WF_RFCR_DROP_OTHER_TIM |
284 			       MT_WF_RFCR_DROP_A3_MAC |
285 			       MT_WF_RFCR_DROP_A3_BSSID);
286 
287 	MT76_FILTER(FCSFAIL, MT_WF_RFCR_DROP_FCSFAIL);
288 
289 	MT76_FILTER(CONTROL, MT_WF_RFCR_DROP_CTS |
290 			     MT_WF_RFCR_DROP_RTS |
291 			     MT_WF_RFCR_DROP_CTL_RSV |
292 			     MT_WF_RFCR_DROP_NDPA);
293 
294 	*total_flags = flags;
295 	mt76_wr(dev, MT_WF_RFCR, dev->rxfilter);
296 }
297 
298 static void
299 mt7603_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
300 			struct ieee80211_bss_conf *info, u32 changed)
301 {
302 	struct mt7603_dev *dev = hw->priv;
303 	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
304 
305 	mutex_lock(&dev->mt76.mutex);
306 
307 	if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BSSID)) {
308 		if (info->assoc || info->ibss_joined) {
309 			mt76_wr(dev, MT_BSSID0(mvif->idx),
310 				get_unaligned_le32(info->bssid));
311 			mt76_wr(dev, MT_BSSID1(mvif->idx),
312 				(get_unaligned_le16(info->bssid + 4) |
313 				 MT_BSSID1_VALID));
314 		} else {
315 			mt76_wr(dev, MT_BSSID0(mvif->idx), 0);
316 			mt76_wr(dev, MT_BSSID1(mvif->idx), 0);
317 		}
318 	}
319 
320 	if (changed & BSS_CHANGED_ERP_SLOT) {
321 		int slottime = info->use_short_slot ? 9 : 20;
322 
323 		if (slottime != dev->slottime) {
324 			dev->slottime = slottime;
325 			mt7603_mac_set_timing(dev);
326 		}
327 	}
328 
329 	if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON_INT)) {
330 		int beacon_int = !!info->enable_beacon * info->beacon_int;
331 
332 		tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
333 		mt7603_beacon_set_timer(dev, mvif->idx, beacon_int);
334 		tasklet_enable(&dev->mt76.pre_tbtt_tasklet);
335 	}
336 
337 	mutex_unlock(&dev->mt76.mutex);
338 }
339 
340 int
341 mt7603_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
342 	       struct ieee80211_sta *sta)
343 {
344 	struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
345 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
346 	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
347 	int idx;
348 	int ret = 0;
349 
350 	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7603_WTBL_STA - 1);
351 	if (idx < 0)
352 		return -ENOSPC;
353 
354 	INIT_LIST_HEAD(&msta->poll_list);
355 	__skb_queue_head_init(&msta->psq);
356 	msta->ps = ~0;
357 	msta->smps = ~0;
358 	msta->wcid.sta = 1;
359 	msta->wcid.idx = idx;
360 	mt7603_wtbl_init(dev, idx, mvif->idx, sta->addr);
361 	mt7603_wtbl_set_ps(dev, msta, false);
362 
363 	if (vif->type == NL80211_IFTYPE_AP)
364 		set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
365 
366 	return ret;
367 }
368 
369 void
370 mt7603_sta_assoc(struct mt76_dev *mdev, struct ieee80211_vif *vif,
371 		 struct ieee80211_sta *sta)
372 {
373 	struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
374 
375 	mt7603_wtbl_update_cap(dev, sta);
376 }
377 
378 void
379 mt7603_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
380 		  struct ieee80211_sta *sta)
381 {
382 	struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
383 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
384 	struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
385 
386 	spin_lock_bh(&dev->ps_lock);
387 	__skb_queue_purge(&msta->psq);
388 	mt7603_filter_tx(dev, wcid->idx, true);
389 	spin_unlock_bh(&dev->ps_lock);
390 
391 	spin_lock_bh(&dev->sta_poll_lock);
392 	if (!list_empty(&msta->poll_list))
393 		list_del_init(&msta->poll_list);
394 	spin_unlock_bh(&dev->sta_poll_lock);
395 
396 	mt7603_wtbl_clear(dev, wcid->idx);
397 }
398 
399 static void
400 mt7603_ps_tx_list(struct mt7603_dev *dev, struct sk_buff_head *list)
401 {
402 	struct sk_buff *skb;
403 
404 	while ((skb = __skb_dequeue(list)) != NULL) {
405 		int qid = skb_get_queue_mapping(skb);
406 
407 		mt76_tx_queue_skb_raw(dev, dev->mphy.q_tx[qid], skb, 0);
408 	}
409 }
410 
411 void
412 mt7603_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
413 {
414 	struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
415 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
416 	struct sk_buff_head list;
417 
418 	mt76_stop_tx_queues(&dev->mphy, sta, true);
419 	mt7603_wtbl_set_ps(dev, msta, ps);
420 	if (ps)
421 		return;
422 
423 	__skb_queue_head_init(&list);
424 
425 	spin_lock_bh(&dev->ps_lock);
426 	skb_queue_splice_tail_init(&msta->psq, &list);
427 	spin_unlock_bh(&dev->ps_lock);
428 
429 	mt7603_ps_tx_list(dev, &list);
430 }
431 
432 static void
433 mt7603_ps_set_more_data(struct sk_buff *skb)
434 {
435 	struct ieee80211_hdr *hdr;
436 
437 	hdr = (struct ieee80211_hdr *)&skb->data[MT_TXD_SIZE];
438 	hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
439 }
440 
441 static void
442 mt7603_release_buffered_frames(struct ieee80211_hw *hw,
443 			       struct ieee80211_sta *sta,
444 			       u16 tids, int nframes,
445 			       enum ieee80211_frame_release_type reason,
446 			       bool more_data)
447 {
448 	struct mt7603_dev *dev = hw->priv;
449 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
450 	struct sk_buff_head list;
451 	struct sk_buff *skb, *tmp;
452 
453 	__skb_queue_head_init(&list);
454 
455 	mt7603_wtbl_set_ps(dev, msta, false);
456 
457 	spin_lock_bh(&dev->ps_lock);
458 	skb_queue_walk_safe(&msta->psq, skb, tmp) {
459 		if (!nframes)
460 			break;
461 
462 		if (!(tids & BIT(skb->priority)))
463 			continue;
464 
465 		skb_set_queue_mapping(skb, MT_TXQ_PSD);
466 		__skb_unlink(skb, &msta->psq);
467 		mt7603_ps_set_more_data(skb);
468 		__skb_queue_tail(&list, skb);
469 		nframes--;
470 	}
471 	spin_unlock_bh(&dev->ps_lock);
472 
473 	if (!skb_queue_empty(&list))
474 		ieee80211_sta_eosp(sta);
475 
476 	mt7603_ps_tx_list(dev, &list);
477 
478 	if (nframes)
479 		mt76_release_buffered_frames(hw, sta, tids, nframes, reason,
480 					     more_data);
481 }
482 
483 static int
484 mt7603_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
485 	       struct ieee80211_vif *vif, struct ieee80211_sta *sta,
486 	       struct ieee80211_key_conf *key)
487 {
488 	struct mt7603_dev *dev = hw->priv;
489 	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
490 	struct mt7603_sta *msta = sta ? (struct mt7603_sta *)sta->drv_priv :
491 				  &mvif->sta;
492 	struct mt76_wcid *wcid = &msta->wcid;
493 	int idx = key->keyidx;
494 
495 	/* fall back to sw encryption for unsupported ciphers */
496 	switch (key->cipher) {
497 	case WLAN_CIPHER_SUITE_TKIP:
498 	case WLAN_CIPHER_SUITE_CCMP:
499 		break;
500 	default:
501 		return -EOPNOTSUPP;
502 	}
503 
504 	/*
505 	 * The hardware does not support per-STA RX GTK, fall back
506 	 * to software mode for these.
507 	 */
508 	if ((vif->type == NL80211_IFTYPE_ADHOC ||
509 	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
510 	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
511 	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
512 	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
513 		return -EOPNOTSUPP;
514 
515 	if (cmd == SET_KEY) {
516 		key->hw_key_idx = wcid->idx;
517 		wcid->hw_key_idx = idx;
518 	} else {
519 		if (idx == wcid->hw_key_idx)
520 			wcid->hw_key_idx = -1;
521 
522 		key = NULL;
523 	}
524 	mt76_wcid_key_setup(&dev->mt76, wcid, key);
525 
526 	return mt7603_wtbl_set_key(dev, wcid->idx, key);
527 }
528 
529 static int
530 mt7603_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
531 	       const struct ieee80211_tx_queue_params *params)
532 {
533 	struct mt7603_dev *dev = hw->priv;
534 	u16 cw_min = (1 << 5) - 1;
535 	u16 cw_max = (1 << 10) - 1;
536 	u32 val;
537 
538 	queue = dev->mphy.q_tx[queue]->hw_idx;
539 
540 	if (params->cw_min)
541 		cw_min = params->cw_min;
542 	if (params->cw_max)
543 		cw_max = params->cw_max;
544 
545 	mutex_lock(&dev->mt76.mutex);
546 	mt7603_mac_stop(dev);
547 
548 	val = mt76_rr(dev, MT_WMM_TXOP(queue));
549 	val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(queue));
550 	val |= params->txop << MT_WMM_TXOP_SHIFT(queue);
551 	mt76_wr(dev, MT_WMM_TXOP(queue), val);
552 
553 	val = mt76_rr(dev, MT_WMM_AIFSN);
554 	val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(queue));
555 	val |= params->aifs << MT_WMM_AIFSN_SHIFT(queue);
556 	mt76_wr(dev, MT_WMM_AIFSN, val);
557 
558 	val = mt76_rr(dev, MT_WMM_CWMIN);
559 	val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(queue));
560 	val |= cw_min << MT_WMM_CWMIN_SHIFT(queue);
561 	mt76_wr(dev, MT_WMM_CWMIN, val);
562 
563 	val = mt76_rr(dev, MT_WMM_CWMAX(queue));
564 	val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(queue));
565 	val |= cw_max << MT_WMM_CWMAX_SHIFT(queue);
566 	mt76_wr(dev, MT_WMM_CWMAX(queue), val);
567 
568 	mt7603_mac_start(dev);
569 	mutex_unlock(&dev->mt76.mutex);
570 
571 	return 0;
572 }
573 
574 static void
575 mt7603_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
576 	     u32 queues, bool drop)
577 {
578 }
579 
580 static int
581 mt7603_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
582 		    struct ieee80211_ampdu_params *params)
583 {
584 	enum ieee80211_ampdu_mlme_action action = params->action;
585 	struct mt7603_dev *dev = hw->priv;
586 	struct ieee80211_sta *sta = params->sta;
587 	struct ieee80211_txq *txq = sta->txq[params->tid];
588 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
589 	u16 tid = params->tid;
590 	u16 ssn = params->ssn;
591 	u8 ba_size = params->buf_size;
592 	struct mt76_txq *mtxq;
593 	int ret = 0;
594 
595 	if (!txq)
596 		return -EINVAL;
597 
598 	mtxq = (struct mt76_txq *)txq->drv_priv;
599 
600 	mutex_lock(&dev->mt76.mutex);
601 	switch (action) {
602 	case IEEE80211_AMPDU_RX_START:
603 		mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, ssn,
604 				   params->buf_size);
605 		mt7603_mac_rx_ba_reset(dev, sta->addr, tid);
606 		break;
607 	case IEEE80211_AMPDU_RX_STOP:
608 		mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
609 		break;
610 	case IEEE80211_AMPDU_TX_OPERATIONAL:
611 		mtxq->aggr = true;
612 		mtxq->send_bar = false;
613 		mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, ba_size);
614 		break;
615 	case IEEE80211_AMPDU_TX_STOP_FLUSH:
616 	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
617 		mtxq->aggr = false;
618 		mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, -1);
619 		break;
620 	case IEEE80211_AMPDU_TX_START:
621 		mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
622 		ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
623 		break;
624 	case IEEE80211_AMPDU_TX_STOP_CONT:
625 		mtxq->aggr = false;
626 		mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, -1);
627 		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
628 		break;
629 	}
630 	mutex_unlock(&dev->mt76.mutex);
631 
632 	return ret;
633 }
634 
635 static void
636 mt7603_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
637 			   struct ieee80211_sta *sta)
638 {
639 	struct mt7603_dev *dev = hw->priv;
640 	struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv;
641 	struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
642 	int i;
643 
644 	spin_lock_bh(&dev->mt76.lock);
645 	for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
646 		msta->rates[i].idx = sta_rates->rate[i].idx;
647 		msta->rates[i].count = sta_rates->rate[i].count;
648 		msta->rates[i].flags = sta_rates->rate[i].flags;
649 
650 		if (msta->rates[i].idx < 0 || !msta->rates[i].count)
651 			break;
652 	}
653 	msta->n_rates = i;
654 	mt7603_wtbl_set_rates(dev, msta, NULL, msta->rates);
655 	msta->rate_probe = false;
656 	mt7603_wtbl_set_smps(dev, msta,
657 			     sta->smps_mode == IEEE80211_SMPS_DYNAMIC);
658 	spin_unlock_bh(&dev->mt76.lock);
659 }
660 
661 static void
662 mt7603_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
663 {
664 	struct mt7603_dev *dev = hw->priv;
665 
666 	mutex_lock(&dev->mt76.mutex);
667 	dev->coverage_class = max_t(s16, coverage_class, 0);
668 	mt7603_mac_set_timing(dev);
669 	mutex_unlock(&dev->mt76.mutex);
670 }
671 
672 static void mt7603_tx(struct ieee80211_hw *hw,
673 		      struct ieee80211_tx_control *control,
674 		      struct sk_buff *skb)
675 {
676 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
677 	struct ieee80211_vif *vif = info->control.vif;
678 	struct mt7603_dev *dev = hw->priv;
679 	struct mt76_wcid *wcid = &dev->global_sta.wcid;
680 
681 	if (control->sta) {
682 		struct mt7603_sta *msta;
683 
684 		msta = (struct mt7603_sta *)control->sta->drv_priv;
685 		wcid = &msta->wcid;
686 	} else if (vif) {
687 		struct mt7603_vif *mvif;
688 
689 		mvif = (struct mt7603_vif *)vif->drv_priv;
690 		wcid = &mvif->sta.wcid;
691 	}
692 
693 	mt76_tx(&dev->mphy, control->sta, wcid, skb);
694 }
695 
696 const struct ieee80211_ops mt7603_ops = {
697 	.tx = mt7603_tx,
698 	.start = mt7603_start,
699 	.stop = mt7603_stop,
700 	.add_interface = mt7603_add_interface,
701 	.remove_interface = mt7603_remove_interface,
702 	.config = mt7603_config,
703 	.configure_filter = mt7603_configure_filter,
704 	.bss_info_changed = mt7603_bss_info_changed,
705 	.sta_state = mt76_sta_state,
706 	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
707 	.set_key = mt7603_set_key,
708 	.conf_tx = mt7603_conf_tx,
709 	.sw_scan_start = mt76_sw_scan,
710 	.sw_scan_complete = mt76_sw_scan_complete,
711 	.flush = mt7603_flush,
712 	.ampdu_action = mt7603_ampdu_action,
713 	.get_txpower = mt76_get_txpower,
714 	.wake_tx_queue = mt76_wake_tx_queue,
715 	.sta_rate_tbl_update = mt7603_sta_rate_tbl_update,
716 	.release_buffered_frames = mt7603_release_buffered_frames,
717 	.set_coverage_class = mt7603_set_coverage_class,
718 	.set_tim = mt76_set_tim,
719 	.get_survey = mt76_get_survey,
720 	.get_antenna = mt76_get_antenna,
721 	.set_sar_specs = mt7603_set_sar_specs,
722 };
723 
724 MODULE_LICENSE("Dual BSD/GPL");
725 
726 static int __init mt7603_init(void)
727 {
728 	int ret;
729 
730 	ret = platform_driver_register(&mt76_wmac_driver);
731 	if (ret)
732 		return ret;
733 
734 #ifdef CONFIG_PCI
735 	ret = pci_register_driver(&mt7603_pci_driver);
736 	if (ret)
737 		platform_driver_unregister(&mt76_wmac_driver);
738 #endif
739 	return ret;
740 }
741 
742 static void __exit mt7603_exit(void)
743 {
744 #ifdef CONFIG_PCI
745 	pci_unregister_driver(&mt7603_pci_driver);
746 #endif
747 	platform_driver_unregister(&mt76_wmac_driver);
748 }
749 
750 module_init(mt7603_init);
751 module_exit(mt7603_exit);
752