mt76x02_util.c

  1// SPDX-License-Identifier: BSD-3-Clause-Clear
  2/*
  3 * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
  4 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  5 */
  6
  7#include <linux/module.h>
  8#include "mt76x02.h"
  9
 10#define MT76x02_CCK_RATE(_idx, _rate) {					\
 11	.bitrate = _rate,					\
 12	.flags = IEEE80211_RATE_SHORT_PREAMBLE,			\
 13	.hw_value = (MT_PHY_TYPE_CCK << 8) | (_idx),		\
 14	.hw_value_short = (MT_PHY_TYPE_CCK << 8) | (8 + (_idx)),	\
 15}
 16
 17struct ieee80211_rate mt76x02_rates[] = {
 18	MT76x02_CCK_RATE(0, 10),
 19	MT76x02_CCK_RATE(1, 20),
 20	MT76x02_CCK_RATE(2, 55),
 21	MT76x02_CCK_RATE(3, 110),
 22	OFDM_RATE(0, 60),
 23	OFDM_RATE(1, 90),
 24	OFDM_RATE(2, 120),
 25	OFDM_RATE(3, 180),
 26	OFDM_RATE(4, 240),
 27	OFDM_RATE(5, 360),
 28	OFDM_RATE(6, 480),
 29	OFDM_RATE(7, 540),
 30};
 31EXPORT_SYMBOL_GPL(mt76x02_rates);
 32
 33static const struct ieee80211_iface_limit mt76x02_if_limits[] = {
 34	{
 35		.max = 1,
 36		.types = BIT(NL80211_IFTYPE_ADHOC)
 37	}, {
 38		.max = 8,
 39		.types = BIT(NL80211_IFTYPE_STATION) |
 40#ifdef CONFIG_MAC80211_MESH
 41			 BIT(NL80211_IFTYPE_MESH_POINT) |
 42#endif
 43			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 44			 BIT(NL80211_IFTYPE_P2P_GO) |
 45			 BIT(NL80211_IFTYPE_AP)
 46	 },
 47};
 48
 49static const struct ieee80211_iface_limit mt76x02u_if_limits[] = {
 50	{
 51		.max = 1,
 52		.types = BIT(NL80211_IFTYPE_ADHOC)
 53	}, {
 54		.max = 2,
 55		.types = BIT(NL80211_IFTYPE_STATION) |
 56#ifdef CONFIG_MAC80211_MESH
 57			 BIT(NL80211_IFTYPE_MESH_POINT) |
 58#endif
 59			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 60			 BIT(NL80211_IFTYPE_P2P_GO) |
 61			 BIT(NL80211_IFTYPE_AP)
 62	},
 63};
 64
 65static const struct ieee80211_iface_combination mt76x02_if_comb[] = {
 66	{
 67		.limits = mt76x02_if_limits,
 68		.n_limits = ARRAY_SIZE(mt76x02_if_limits),
 69		.max_interfaces = 8,
 70		.num_different_channels = 1,
 71		.beacon_int_infra_match = true,
 72		.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 73				       BIT(NL80211_CHAN_WIDTH_20) |
 74				       BIT(NL80211_CHAN_WIDTH_40) |
 75				       BIT(NL80211_CHAN_WIDTH_80),
 76	}
 77};
 78
 79static const struct ieee80211_iface_combination mt76x02u_if_comb[] = {
 80	{
 81		.limits = mt76x02u_if_limits,
 82		.n_limits = ARRAY_SIZE(mt76x02u_if_limits),
 83		.max_interfaces = 2,
 84		.num_different_channels = 1,
 85		.beacon_int_infra_match = true,
 86	}
 87};
 88
 89static void
 90mt76x02_led_set_config(struct mt76_phy *mphy, u8 delay_on, u8 delay_off)
 91{
 92	struct mt76x02_dev *dev = container_of(mphy->dev, struct mt76x02_dev,
 93					       mt76);
 94	u32 val;
 95
 96	val = FIELD_PREP(MT_LED_STATUS_DURATION, 0xff) |
 97	      FIELD_PREP(MT_LED_STATUS_OFF, delay_off) |
 98	      FIELD_PREP(MT_LED_STATUS_ON, delay_on);
 99
100	mt76_wr(dev, MT_LED_S0(mphy->leds.pin), val);
101	mt76_wr(dev, MT_LED_S1(mphy->leds.pin), val);
102
103	val = MT_LED_CTRL_REPLAY(mphy->leds.pin) |
104	      MT_LED_CTRL_KICK(mphy->leds.pin);
105	if (mphy->leds.al)
106		val |= MT_LED_CTRL_POLARITY(mphy->leds.pin);
107	mt76_wr(dev, MT_LED_CTRL, val);
108}
109
110static int
111mt76x02_led_set_blink(struct led_classdev *led_cdev,
112		      unsigned long *delay_on,
113		      unsigned long *delay_off)
114{
115	struct mt76_phy *mphy = container_of(led_cdev, struct mt76_phy,
116					     leds.cdev);
117	u8 delta_on, delta_off;
118
119	delta_off = max_t(u8, *delay_off / 10, 1);
120	delta_on = max_t(u8, *delay_on / 10, 1);
121
122	mt76x02_led_set_config(mphy, delta_on, delta_off);
123
124	return 0;
125}
126
127static void
128mt76x02_led_set_brightness(struct led_classdev *led_cdev,
129			   enum led_brightness brightness)
130{
131	struct mt76_phy *mphy = container_of(led_cdev, struct mt76_phy,
132					     leds.cdev);
133
134	if (!brightness)
135		mt76x02_led_set_config(mphy, 0, 0xff);
136	else
137		mt76x02_led_set_config(mphy, 0xff, 0);
138}
139
140int mt76x02_init_device(struct mt76x02_dev *dev)
141{
142	struct ieee80211_hw *hw = mt76_hw(dev);
143	struct wiphy *wiphy = hw->wiphy;
144
145	INIT_DELAYED_WORK(&dev->mphy.mac_work, mt76x02_mac_work);
146
147	hw->queues = 4;
148	hw->max_rates = 1;
149	hw->max_report_rates = 7;
150	hw->max_rate_tries = 1;
151	hw->extra_tx_headroom = 2;
152
153	if (mt76_is_usb(&dev->mt76)) {
154		hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) +
155					 MT_DMA_HDR_LEN;
156		wiphy->iface_combinations = mt76x02u_if_comb;
157		wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02u_if_comb);
158	} else {
159		INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work);
160
161		mt76x02_dfs_init_detector(dev);
162
163		wiphy->reg_notifier = mt76x02_regd_notifier;
164		wiphy->iface_combinations = mt76x02_if_comb;
165		wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb);
166
167		/* init led callbacks */
168		if (IS_ENABLED(CONFIG_MT76_LEDS)) {
169			dev->mphy.leds.cdev.brightness_set =
170					mt76x02_led_set_brightness;
171			dev->mphy.leds.cdev.blink_set = mt76x02_led_set_blink;
172		}
173	}
174
175	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
176
177	hw->sta_data_size = sizeof(struct mt76x02_sta);
178	hw->vif_data_size = sizeof(struct mt76x02_vif);
179
180	ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
181	ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
182	ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
183
184	dev->mt76.global_wcid.idx = 255;
185	dev->mt76.global_wcid.hw_key_idx = -1;
186	dev->slottime = 9;
187
188	if (is_mt76x2(dev)) {
189		dev->mphy.sband_2g.sband.ht_cap.cap |=
190				IEEE80211_HT_CAP_LDPC_CODING;
191		dev->mphy.sband_5g.sband.ht_cap.cap |=
192				IEEE80211_HT_CAP_LDPC_CODING;
193		dev->mphy.chainmask = 0x202;
194		dev->mphy.antenna_mask = 3;
195	} else {
196		dev->mphy.chainmask = 0x101;
197		dev->mphy.antenna_mask = 1;
198	}
199
200	return 0;
201}
202EXPORT_SYMBOL_GPL(mt76x02_init_device);
203
204void mt76x02_configure_filter(struct ieee80211_hw *hw,
205			      unsigned int changed_flags,
206			      unsigned int *total_flags, u64 multicast)
207{
208	struct mt76x02_dev *dev = hw->priv;
209	u32 flags = 0;
210
211#define MT76_FILTER(_flag, _hw) do { \
212		flags |= *total_flags & FIF_##_flag;			\
213		dev->mt76.rxfilter &= ~(_hw);				\
214		dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw);	\
215	} while (0)
216
217	mutex_lock(&dev->mt76.mutex);
218
219	dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
220
221	MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
222	MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
223	MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
224			     MT_RX_FILTR_CFG_CTS |
225			     MT_RX_FILTR_CFG_CFEND |
226			     MT_RX_FILTR_CFG_CFACK |
227			     MT_RX_FILTR_CFG_BA |
228			     MT_RX_FILTR_CFG_CTRL_RSV);
229	MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
230
231	*total_flags = flags;
232	mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
233
234	mutex_unlock(&dev->mt76.mutex);
235}
236EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
237
238int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
239		    struct ieee80211_sta *sta)
240{
241	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
242	struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
243	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
244	int idx = 0;
245
246	memset(msta, 0, sizeof(*msta));
247
248	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT76x02_N_WCIDS);
249	if (idx < 0)
250		return -ENOSPC;
251
252	msta->vif = mvif;
253	msta->wcid.sta = 1;
254	msta->wcid.idx = idx;
255	msta->wcid.hw_key_idx = -1;
256	mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
257	mt76x02_mac_wcid_set_drop(dev, idx, false);
258	ewma_pktlen_init(&msta->pktlen);
259
260	if (vif->type == NL80211_IFTYPE_AP)
261		set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
262
263	return 0;
264}
265EXPORT_SYMBOL_GPL(mt76x02_sta_add);
266
267void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
268			struct ieee80211_sta *sta)
269{
270	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
271	struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
272	int idx = wcid->idx;
273
274	mt76x02_mac_wcid_set_drop(dev, idx, true);
275	mt76x02_mac_wcid_setup(dev, idx, 0, NULL);
276}
277EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
278
279static void
280mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
281		 unsigned int idx)
282{
283	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
284	struct mt76_txq *mtxq;
285
286	memset(mvif, 0, sizeof(*mvif));
287
288	mvif->idx = idx;
289	mvif->group_wcid.idx = MT_VIF_WCID(idx);
290	mt76_wcid_init(&mvif->group_wcid, 0);
291
292	mtxq = (struct mt76_txq *)vif->txq->drv_priv;
293	rcu_assign_pointer(dev->mt76.wcid[MT_VIF_WCID(idx)], &mvif->group_wcid);
294	mtxq->wcid = MT_VIF_WCID(idx);
295}
296
297int
298mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
299{
300	struct mt76x02_dev *dev = hw->priv;
301	unsigned int idx = 0;
302
303	/* Allow to change address in HW if we create first interface. */
304	if (!dev->mt76.vif_mask &&
305	    (((vif->addr[0] ^ dev->mphy.macaddr[0]) & ~GENMASK(4, 1)) ||
306	     memcmp(vif->addr + 1, dev->mphy.macaddr + 1, ETH_ALEN - 1)))
307		mt76x02_mac_setaddr(dev, vif->addr);
308
309	if (vif->addr[0] & BIT(1))
310		idx = 1 + (((dev->mphy.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
311
312	/*
313	 * Client mode typically only has one configurable BSSID register,
314	 * which is used for bssidx=0. This is linked to the MAC address.
315	 * Since mac80211 allows changing interface types, and we cannot
316	 * force the use of the primary MAC address for a station mode
317	 * interface, we need some other way of configuring a per-interface
318	 * remote BSSID.
319	 * The hardware provides an AP-Client feature, where bssidx 0-7 are
320	 * used for AP mode and bssidx 8-15 for client mode.
321	 * We shift the station interface bss index by 8 to force the
322	 * hardware to recognize the BSSID.
323	 * The resulting bssidx mismatch for unicast frames is ignored by hw.
324	 */
325	if (vif->type == NL80211_IFTYPE_STATION)
326		idx += 8;
327
328	/* vif is already set or idx is 8 for AP/Mesh/... */
329	if (dev->mt76.vif_mask & BIT_ULL(idx) ||
330	    (vif->type != NL80211_IFTYPE_STATION && idx > 7))
331		return -EBUSY;
332
333	dev->mt76.vif_mask |= BIT_ULL(idx);
334
335	mt76x02_vif_init(dev, vif, idx);
336	return 0;
337}
338EXPORT_SYMBOL_GPL(mt76x02_add_interface);
339
340void mt76x02_remove_interface(struct ieee80211_hw *hw,
341			      struct ieee80211_vif *vif)
342{
343	struct mt76x02_dev *dev = hw->priv;
344	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
345
346	dev->mt76.vif_mask &= ~BIT_ULL(mvif->idx);
347	rcu_assign_pointer(dev->mt76.wcid[mvif->group_wcid.idx], NULL);
348	mt76_wcid_cleanup(&dev->mt76, &mvif->group_wcid);
349}
350EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
351
352int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
353			 struct ieee80211_ampdu_params *params)
354{
355	enum ieee80211_ampdu_mlme_action action = params->action;
356	struct ieee80211_sta *sta = params->sta;
357	struct mt76x02_dev *dev = hw->priv;
358	struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
359	struct ieee80211_txq *txq = sta->txq[params->tid];
360	u16 tid = params->tid;
361	u16 ssn = params->ssn;
362	struct mt76_txq *mtxq;
363	int ret = 0;
364
365	if (!txq)
366		return -EINVAL;
367
368	mtxq = (struct mt76_txq *)txq->drv_priv;
369
370	mutex_lock(&dev->mt76.mutex);
371	switch (action) {
372	case IEEE80211_AMPDU_RX_START:
373		mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid,
374				   ssn, params->buf_size);
375		mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
376		break;
377	case IEEE80211_AMPDU_RX_STOP:
378		mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
379		mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
380			   BIT(16 + tid));
381		break;
382	case IEEE80211_AMPDU_TX_OPERATIONAL:
383		mtxq->aggr = true;
384		mtxq->send_bar = false;
385		ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
386		break;
387	case IEEE80211_AMPDU_TX_STOP_FLUSH:
388	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
389		mtxq->aggr = false;
390		break;
391	case IEEE80211_AMPDU_TX_START:
392		mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
393		ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
394		break;
395	case IEEE80211_AMPDU_TX_STOP_CONT:
396		mtxq->aggr = false;
397		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
398		break;
399	}
400	mutex_unlock(&dev->mt76.mutex);
401
402	return ret;
403}
404EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
405
406int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
407		    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
408		    struct ieee80211_key_conf *key)
409{
410	struct mt76x02_dev *dev = hw->priv;
411	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
412	struct mt76x02_sta *msta;
413	struct mt76_wcid *wcid;
414	int idx = key->keyidx;
415	int ret;
416
417	/* fall back to sw encryption for unsupported ciphers */
418	switch (key->cipher) {
419	case WLAN_CIPHER_SUITE_WEP40:
420	case WLAN_CIPHER_SUITE_WEP104:
421	case WLAN_CIPHER_SUITE_TKIP:
422	case WLAN_CIPHER_SUITE_CCMP:
423		break;
424	default:
425		return -EOPNOTSUPP;
426	}
427
428	/*
429	 * The hardware does not support per-STA RX GTK, fall back
430	 * to software mode for these.
431	 */
432	if ((vif->type == NL80211_IFTYPE_ADHOC ||
433	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
434	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
435	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
436	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
437		return -EOPNOTSUPP;
438
439	/*
440	 * In USB AP mode, broadcast/multicast frames are setup in beacon
441	 * data registers and sent via HW beacons engine, they require to
442	 * be already encrypted.
443	 */
444	if (mt76_is_usb(&dev->mt76) &&
445	    vif->type == NL80211_IFTYPE_AP &&
446	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
447		return -EOPNOTSUPP;
448
449	/* MT76x0 GTK offloading does not work with more than one VIF */
450	if (is_mt76x0(dev) && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
451		return -EOPNOTSUPP;
452
453	msta = sta ? (struct mt76x02_sta *)sta->drv_priv : NULL;
454	wcid = msta ? &msta->wcid : &mvif->group_wcid;
455
456	if (cmd != SET_KEY) {
457		if (idx == wcid->hw_key_idx) {
458			wcid->hw_key_idx = -1;
459			wcid->sw_iv = false;
460		}
461
462		return 0;
463	}
464
465	key->hw_key_idx = wcid->idx;
466	wcid->hw_key_idx = idx;
467	if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
468		key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
469		wcid->sw_iv = true;
470	}
471	mt76_wcid_key_setup(&dev->mt76, wcid, key);
472
473	if (!msta) {
474		if (key || wcid->hw_key_idx == idx) {
475			ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key);
476			if (ret)
477				return ret;
478		}
479
480		return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key);
481	}
482
483	return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key);
484}
485EXPORT_SYMBOL_GPL(mt76x02_set_key);
486
487int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
488		    unsigned int link_id, u16 queue,
489		    const struct ieee80211_tx_queue_params *params)
490{
491	struct mt76x02_dev *dev = hw->priv;
492	u8 cw_min = 5, cw_max = 10, qid;
493	u32 val;
494
495	qid = dev->mphy.q_tx[queue]->hw_idx;
496
497	if (params->cw_min)
498		cw_min = fls(params->cw_min);
499	if (params->cw_max)
500		cw_max = fls(params->cw_max);
501
502	val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) |
503	      FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) |
504	      FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) |
505	      FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max);
506	mt76_wr(dev, MT_EDCA_CFG_AC(qid), val);
507
508	val = mt76_rr(dev, MT_WMM_TXOP(qid));
509	val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid));
510	val |= params->txop << MT_WMM_TXOP_SHIFT(qid);
511	mt76_wr(dev, MT_WMM_TXOP(qid), val);
512
513	val = mt76_rr(dev, MT_WMM_AIFSN);
514	val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid));
515	val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid);
516	mt76_wr(dev, MT_WMM_AIFSN, val);
517
518	val = mt76_rr(dev, MT_WMM_CWMIN);
519	val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
520	val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
521	mt76_wr(dev, MT_WMM_CWMIN, val);
522
523	val = mt76_rr(dev, MT_WMM_CWMAX);
524	val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid));
525	val |= cw_max << MT_WMM_CWMAX_SHIFT(qid);
526	mt76_wr(dev, MT_WMM_CWMAX, val);
527
528	return 0;
529}
530EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
531
532void mt76x02_set_tx_ackto(struct mt76x02_dev *dev)
533{
534	u8 ackto, sifs, slottime = dev->slottime;
535
536	/* As defined by IEEE 802.11-2007 17.3.8.6 */
537	slottime += 3 * dev->coverage_class;
538	mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
539		       MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
540
541	sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG,
542			      MT_XIFS_TIME_CFG_OFDM_SIFS);
543
544	ackto = slottime + sifs;
545	mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG,
546		       MT_TX_TIMEOUT_CFG_ACKTO, ackto);
547}
548EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
549
550void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
551				int radio_idx, s16 coverage_class)
552{
553	struct mt76x02_dev *dev = hw->priv;
554
555	mutex_lock(&dev->mt76.mutex);
556	dev->coverage_class = max_t(s16, coverage_class, 0);
557	mt76x02_set_tx_ackto(dev);
558	mutex_unlock(&dev->mt76.mutex);
559}
560EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
561
562int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, u32 val)
563{
564	struct mt76x02_dev *dev = hw->priv;
565
566	if (val != ~0 && val > 0xffff)
567		return -EINVAL;
568
569	mutex_lock(&dev->mt76.mutex);
570	mt76x02_mac_set_rts_thresh(dev, val);
571	mutex_unlock(&dev->mt76.mutex);
572
573	return 0;
574}
575EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
576
577void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
578				 struct ieee80211_vif *vif,
579				 struct ieee80211_sta *sta)
580{
581	struct mt76x02_dev *dev = hw->priv;
582	struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
583	struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates);
584	struct ieee80211_tx_rate rate = {};
585
586	if (!rates)
587		return;
588
589	rate.idx = rates->rate[0].idx;
590	rate.flags = rates->rate[0].flags;
591	mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate);
592}
593EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
594
595void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len)
596{
597	int hdrlen;
598
599	if (!len)
600		return;
601
602	hdrlen = ieee80211_get_hdrlen_from_skb(skb);
603	memmove(skb->data + len, skb->data, hdrlen);
604	skb_pull(skb, len);
605}
606EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
607
608void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
609			      struct ieee80211_vif *vif)
610{
611	struct mt76x02_dev *dev = hw->priv;
612
613	clear_bit(MT76_SCANNING, &dev->mphy.state);
614	if (dev->cal.gain_init_done) {
615		/* Restore AGC gain and resume calibration after scanning. */
616		dev->cal.low_gain = -1;
617		ieee80211_queue_delayed_work(hw, &dev->cal_work, 0);
618	}
619}
620EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
621
622void mt76x02_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta,
623		    bool ps)
624{
625	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
626	struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
627	int idx = msta->wcid.idx;
628
629	mt76_stop_tx_queues(&dev->mphy, sta, true);
630	if (mt76_is_mmio(mdev))
631		mt76x02_mac_wcid_set_drop(dev, idx, ps);
632}
633EXPORT_SYMBOL_GPL(mt76x02_sta_ps);
634
635void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
636			      struct ieee80211_vif *vif,
637			      struct ieee80211_bss_conf *info,
638			      u64 changed)
639{
640	struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
641	struct mt76x02_dev *dev = hw->priv;
642
643	mutex_lock(&dev->mt76.mutex);
644
645	if (changed & BSS_CHANGED_BSSID)
646		mt76x02_mac_set_bssid(dev, mvif->idx, info->bssid);
647
648	if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
649		mt76x02_mac_set_tx_protection(dev, info->use_cts_prot,
650					      info->ht_operation_mode);
651
652	if (changed & BSS_CHANGED_BEACON_INT) {
653		mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
654			       MT_BEACON_TIME_CFG_INTVAL,
655			       info->beacon_int << 4);
656		dev->mt76.beacon_int = info->beacon_int;
657	}
658
659	if (changed & BSS_CHANGED_BEACON_ENABLED)
660		mt76x02_mac_set_beacon_enable(dev, vif, info->enable_beacon);
661
662	if (changed & BSS_CHANGED_ERP_PREAMBLE)
663		mt76x02_mac_set_short_preamble(dev, info->use_short_preamble);
664
665	if (changed & BSS_CHANGED_ERP_SLOT) {
666		int slottime = info->use_short_slot ? 9 : 20;
667
668		dev->slottime = slottime;
669		mt76x02_set_tx_ackto(dev);
670	}
671
672	mutex_unlock(&dev->mt76.mutex);
673}
674EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed);
675
676void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev)
677{
678	struct ieee80211_hw *hw = mt76_hw(dev);
679	struct wiphy *wiphy = hw->wiphy;
680	int i;
681
682	for (i = 0; i < ARRAY_SIZE(dev->macaddr_list); i++) {
683		u8 *addr = dev->macaddr_list[i].addr;
684
685		memcpy(addr, dev->mphy.macaddr, ETH_ALEN);
686
687		if (!i)
688			continue;
689
690		addr[0] |= BIT(1);
691		addr[0] ^= ((i - 1) << 2);
692	}
693	wiphy->addresses = dev->macaddr_list;
694	wiphy->n_addresses = ARRAY_SIZE(dev->macaddr_list);
695}
696EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list);
697
698MODULE_DESCRIPTION("MediaTek MT76x02 helpers");
699MODULE_LICENSE("Dual BSD/GPL");