1 // SPDX-License-Identifier: ISC
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
17 struct 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 };
31 EXPORT_SYMBOL_GPL(mt76x02_rates);
32
33 static 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
49 static 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
65 static 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
79 static 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
89 static void
mt76x02_led_set_config(struct mt76_phy * mphy,u8 delay_on,u8 delay_off)90 mt76x02_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
110 static int
mt76x02_led_set_blink(struct led_classdev * led_cdev,unsigned long * delay_on,unsigned long * delay_off)111 mt76x02_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
127 static void
mt76x02_led_set_brightness(struct led_classdev * led_cdev,enum led_brightness brightness)128 mt76x02_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
mt76x02_init_device(struct mt76x02_dev * dev)140 int 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 }
202 EXPORT_SYMBOL_GPL(mt76x02_init_device);
203
mt76x02_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)204 void 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 }
236 EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
237
mt76x02_sta_add(struct mt76_dev * mdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta)238 int 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 }
265 EXPORT_SYMBOL_GPL(mt76x02_sta_add);
266
mt76x02_sta_remove(struct mt76_dev * mdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta)267 void 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 }
277 EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
278
279 static void
mt76x02_vif_init(struct mt76x02_dev * dev,struct ieee80211_vif * vif,unsigned int idx)280 mt76x02_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
297 int
mt76x02_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)298 mt76x02_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 }
338 EXPORT_SYMBOL_GPL(mt76x02_add_interface);
339
mt76x02_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)340 void 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 }
350 EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
351
mt76x02_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)352 int 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 }
404 EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
405
mt76x02_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)406 int 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 }
485 EXPORT_SYMBOL_GPL(mt76x02_set_key);
486
mt76x02_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 queue,const struct ieee80211_tx_queue_params * params)487 int 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 }
530 EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
531
mt76x02_set_tx_ackto(struct mt76x02_dev * dev)532 void 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 }
548 EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
549
mt76x02_set_coverage_class(struct ieee80211_hw * hw,s16 coverage_class)550 void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
551 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 }
560 EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
561
mt76x02_set_rts_threshold(struct ieee80211_hw * hw,u32 val)562 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, 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 }
575 EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
576
mt76x02_sta_rate_tbl_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)577 void 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 }
593 EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
594
mt76x02_remove_hdr_pad(struct sk_buff * skb,int len)595 void 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 }
606 EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
607
mt76x02_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)608 void 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 }
620 EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
621
mt76x02_sta_ps(struct mt76_dev * mdev,struct ieee80211_sta * sta,bool ps)622 void 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 }
633 EXPORT_SYMBOL_GPL(mt76x02_sta_ps);
634
mt76x02_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u64 changed)635 void 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 }
674 EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed);
675
mt76x02_config_mac_addr_list(struct mt76x02_dev * dev)676 void 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 }
696 EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list);
697
698 MODULE_DESCRIPTION("MediaTek MT76x02 helpers");
699 MODULE_LICENSE("Dual BSD/GPL");
700