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_dev * mdev,u8 delay_on,u8 delay_off)90 mt76x02_led_set_config(struct mt76_dev *mdev, u8 delay_on,
91 u8 delay_off)
92 {
93 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev,
94 mt76);
95 u32 val;
96
97 val = FIELD_PREP(MT_LED_STATUS_DURATION, 0xff) |
98 FIELD_PREP(MT_LED_STATUS_OFF, delay_off) |
99 FIELD_PREP(MT_LED_STATUS_ON, delay_on);
100
101 mt76_wr(dev, MT_LED_S0(mdev->led_pin), val);
102 mt76_wr(dev, MT_LED_S1(mdev->led_pin), val);
103
104 val = MT_LED_CTRL_REPLAY(mdev->led_pin) |
105 MT_LED_CTRL_KICK(mdev->led_pin);
106 if (mdev->led_al)
107 val |= MT_LED_CTRL_POLARITY(mdev->led_pin);
108 mt76_wr(dev, MT_LED_CTRL, val);
109 }
110
111 static int
mt76x02_led_set_blink(struct led_classdev * led_cdev,unsigned long * delay_on,unsigned long * delay_off)112 mt76x02_led_set_blink(struct led_classdev *led_cdev,
113 unsigned long *delay_on,
114 unsigned long *delay_off)
115 {
116 struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev,
117 led_cdev);
118 u8 delta_on, delta_off;
119
120 delta_off = max_t(u8, *delay_off / 10, 1);
121 delta_on = max_t(u8, *delay_on / 10, 1);
122
123 mt76x02_led_set_config(mdev, delta_on, delta_off);
124
125 return 0;
126 }
127
128 static void
mt76x02_led_set_brightness(struct led_classdev * led_cdev,enum led_brightness brightness)129 mt76x02_led_set_brightness(struct led_classdev *led_cdev,
130 enum led_brightness brightness)
131 {
132 struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev,
133 led_cdev);
134
135 if (!brightness)
136 mt76x02_led_set_config(mdev, 0, 0xff);
137 else
138 mt76x02_led_set_config(mdev, 0xff, 0);
139 }
140
mt76x02_init_device(struct mt76x02_dev * dev)141 int mt76x02_init_device(struct mt76x02_dev *dev)
142 {
143 struct ieee80211_hw *hw = mt76_hw(dev);
144 struct wiphy *wiphy = hw->wiphy;
145
146 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt76x02_mac_work);
147
148 hw->queues = 4;
149 hw->max_rates = 1;
150 hw->max_report_rates = 7;
151 hw->max_rate_tries = 1;
152 hw->extra_tx_headroom = 2;
153
154 if (mt76_is_usb(&dev->mt76)) {
155 hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) +
156 MT_DMA_HDR_LEN;
157 wiphy->iface_combinations = mt76x02u_if_comb;
158 wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02u_if_comb);
159 } else {
160 INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work);
161
162 mt76x02_dfs_init_detector(dev);
163
164 wiphy->reg_notifier = mt76x02_regd_notifier;
165 wiphy->iface_combinations = mt76x02_if_comb;
166 wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb);
167
168 /* init led callbacks */
169 if (IS_ENABLED(CONFIG_MT76_LEDS)) {
170 dev->mt76.led_cdev.brightness_set =
171 mt76x02_led_set_brightness;
172 dev->mt76.led_cdev.blink_set = mt76x02_led_set_blink;
173 }
174 }
175
176 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
177
178 hw->sta_data_size = sizeof(struct mt76x02_sta);
179 hw->vif_data_size = sizeof(struct mt76x02_vif);
180
181 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
182 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
183 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
184
185 dev->mt76.global_wcid.idx = 255;
186 dev->mt76.global_wcid.hw_key_idx = -1;
187 dev->slottime = 9;
188
189 if (is_mt76x2(dev)) {
190 dev->mphy.sband_2g.sband.ht_cap.cap |=
191 IEEE80211_HT_CAP_LDPC_CODING;
192 dev->mphy.sband_5g.sband.ht_cap.cap |=
193 IEEE80211_HT_CAP_LDPC_CODING;
194 dev->mphy.chainmask = 0x202;
195 dev->mphy.antenna_mask = 3;
196 } else {
197 dev->mphy.chainmask = 0x101;
198 dev->mphy.antenna_mask = 1;
199 }
200
201 return 0;
202 }
203 EXPORT_SYMBOL_GPL(mt76x02_init_device);
204
mt76x02_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)205 void mt76x02_configure_filter(struct ieee80211_hw *hw,
206 unsigned int changed_flags,
207 unsigned int *total_flags, u64 multicast)
208 {
209 struct mt76x02_dev *dev = hw->priv;
210 u32 flags = 0;
211
212 #define MT76_FILTER(_flag, _hw) do { \
213 flags |= *total_flags & FIF_##_flag; \
214 dev->mt76.rxfilter &= ~(_hw); \
215 dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw); \
216 } while (0)
217
218 mutex_lock(&dev->mt76.mutex);
219
220 dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
221
222 MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
223 MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
224 MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
225 MT_RX_FILTR_CFG_CTS |
226 MT_RX_FILTR_CFG_CFEND |
227 MT_RX_FILTR_CFG_CFACK |
228 MT_RX_FILTR_CFG_BA |
229 MT_RX_FILTR_CFG_CTRL_RSV);
230 MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
231
232 *total_flags = flags;
233 mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
234
235 mutex_unlock(&dev->mt76.mutex);
236 }
237 EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
238
mt76x02_sta_add(struct mt76_dev * mdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta)239 int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
240 struct ieee80211_sta *sta)
241 {
242 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
243 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
244 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
245 int idx = 0;
246
247 memset(msta, 0, sizeof(*msta));
248
249 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT76x02_N_WCIDS);
250 if (idx < 0)
251 return -ENOSPC;
252
253 msta->vif = mvif;
254 msta->wcid.sta = 1;
255 msta->wcid.idx = idx;
256 msta->wcid.hw_key_idx = -1;
257 mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
258 mt76x02_mac_wcid_set_drop(dev, idx, false);
259 ewma_pktlen_init(&msta->pktlen);
260
261 if (vif->type == NL80211_IFTYPE_AP)
262 set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
263
264 return 0;
265 }
266 EXPORT_SYMBOL_GPL(mt76x02_sta_add);
267
mt76x02_sta_remove(struct mt76_dev * mdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta)268 void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
269 struct ieee80211_sta *sta)
270 {
271 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
272 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
273 int idx = wcid->idx;
274
275 mt76x02_mac_wcid_set_drop(dev, idx, true);
276 mt76x02_mac_wcid_setup(dev, idx, 0, NULL);
277 }
278 EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
279
280 static void
mt76x02_vif_init(struct mt76x02_dev * dev,struct ieee80211_vif * vif,unsigned int idx)281 mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
282 unsigned int idx)
283 {
284 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
285 struct mt76_txq *mtxq;
286
287 memset(mvif, 0, sizeof(*mvif));
288
289 mvif->idx = idx;
290 mvif->group_wcid.idx = MT_VIF_WCID(idx);
291 mvif->group_wcid.hw_key_idx = -1;
292 mt76_packet_id_init(&mvif->group_wcid);
293
294 mtxq = (struct mt76_txq *)vif->txq->drv_priv;
295 rcu_assign_pointer(dev->mt76.wcid[MT_VIF_WCID(idx)], &mvif->group_wcid);
296 mtxq->wcid = MT_VIF_WCID(idx);
297 }
298
299 int
mt76x02_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)300 mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
301 {
302 struct mt76x02_dev *dev = hw->priv;
303 unsigned int idx = 0;
304
305 /* Allow to change address in HW if we create first interface. */
306 if (!dev->mt76.vif_mask &&
307 (((vif->addr[0] ^ dev->mphy.macaddr[0]) & ~GENMASK(4, 1)) ||
308 memcmp(vif->addr + 1, dev->mphy.macaddr + 1, ETH_ALEN - 1)))
309 mt76x02_mac_setaddr(dev, vif->addr);
310
311 if (vif->addr[0] & BIT(1))
312 idx = 1 + (((dev->mphy.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
313
314 /*
315 * Client mode typically only has one configurable BSSID register,
316 * which is used for bssidx=0. This is linked to the MAC address.
317 * Since mac80211 allows changing interface types, and we cannot
318 * force the use of the primary MAC address for a station mode
319 * interface, we need some other way of configuring a per-interface
320 * remote BSSID.
321 * The hardware provides an AP-Client feature, where bssidx 0-7 are
322 * used for AP mode and bssidx 8-15 for client mode.
323 * We shift the station interface bss index by 8 to force the
324 * hardware to recognize the BSSID.
325 * The resulting bssidx mismatch for unicast frames is ignored by hw.
326 */
327 if (vif->type == NL80211_IFTYPE_STATION)
328 idx += 8;
329
330 /* vif is already set or idx is 8 for AP/Mesh/... */
331 if (dev->mt76.vif_mask & BIT_ULL(idx) ||
332 (vif->type != NL80211_IFTYPE_STATION && idx > 7))
333 return -EBUSY;
334
335 dev->mt76.vif_mask |= BIT_ULL(idx);
336
337 mt76x02_vif_init(dev, vif, idx);
338 return 0;
339 }
340 EXPORT_SYMBOL_GPL(mt76x02_add_interface);
341
mt76x02_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)342 void mt76x02_remove_interface(struct ieee80211_hw *hw,
343 struct ieee80211_vif *vif)
344 {
345 struct mt76x02_dev *dev = hw->priv;
346 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
347
348 dev->mt76.vif_mask &= ~BIT_ULL(mvif->idx);
349 rcu_assign_pointer(dev->mt76.wcid[mvif->group_wcid.idx], NULL);
350 mt76_packet_id_flush(&dev->mt76, &mvif->group_wcid);
351 }
352 EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
353
mt76x02_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)354 int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
355 struct ieee80211_ampdu_params *params)
356 {
357 enum ieee80211_ampdu_mlme_action action = params->action;
358 struct ieee80211_sta *sta = params->sta;
359 struct mt76x02_dev *dev = hw->priv;
360 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
361 struct ieee80211_txq *txq = sta->txq[params->tid];
362 u16 tid = params->tid;
363 u16 ssn = params->ssn;
364 struct mt76_txq *mtxq;
365 int ret = 0;
366
367 if (!txq)
368 return -EINVAL;
369
370 mtxq = (struct mt76_txq *)txq->drv_priv;
371
372 mutex_lock(&dev->mt76.mutex);
373 switch (action) {
374 case IEEE80211_AMPDU_RX_START:
375 mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid,
376 ssn, params->buf_size);
377 mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
378 break;
379 case IEEE80211_AMPDU_RX_STOP:
380 mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
381 mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
382 BIT(16 + tid));
383 break;
384 case IEEE80211_AMPDU_TX_OPERATIONAL:
385 mtxq->aggr = true;
386 mtxq->send_bar = false;
387 ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
388 break;
389 case IEEE80211_AMPDU_TX_STOP_FLUSH:
390 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
391 mtxq->aggr = false;
392 break;
393 case IEEE80211_AMPDU_TX_START:
394 mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
395 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
396 break;
397 case IEEE80211_AMPDU_TX_STOP_CONT:
398 mtxq->aggr = false;
399 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
400 break;
401 }
402 mutex_unlock(&dev->mt76.mutex);
403
404 return ret;
405 }
406 EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
407
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)408 int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
409 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
410 struct ieee80211_key_conf *key)
411 {
412 struct mt76x02_dev *dev = hw->priv;
413 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
414 struct mt76x02_sta *msta;
415 struct mt76_wcid *wcid;
416 int idx = key->keyidx;
417 int ret;
418
419 /* fall back to sw encryption for unsupported ciphers */
420 switch (key->cipher) {
421 case WLAN_CIPHER_SUITE_WEP40:
422 case WLAN_CIPHER_SUITE_WEP104:
423 case WLAN_CIPHER_SUITE_TKIP:
424 case WLAN_CIPHER_SUITE_CCMP:
425 break;
426 default:
427 return -EOPNOTSUPP;
428 }
429
430 /*
431 * The hardware does not support per-STA RX GTK, fall back
432 * to software mode for these.
433 */
434 if ((vif->type == NL80211_IFTYPE_ADHOC ||
435 vif->type == NL80211_IFTYPE_MESH_POINT) &&
436 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
437 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
438 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
439 return -EOPNOTSUPP;
440
441 /*
442 * In USB AP mode, broadcast/multicast frames are setup in beacon
443 * data registers and sent via HW beacons engine, they require to
444 * be already encrypted.
445 */
446 if (mt76_is_usb(&dev->mt76) &&
447 vif->type == NL80211_IFTYPE_AP &&
448 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
449 return -EOPNOTSUPP;
450
451 /* MT76x0 GTK offloading does not work with more than one VIF */
452 if (is_mt76x0(dev) && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
453 return -EOPNOTSUPP;
454
455 msta = sta ? (struct mt76x02_sta *)sta->drv_priv : NULL;
456 wcid = msta ? &msta->wcid : &mvif->group_wcid;
457
458 if (cmd == SET_KEY) {
459 key->hw_key_idx = wcid->idx;
460 wcid->hw_key_idx = idx;
461 if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
462 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
463 wcid->sw_iv = true;
464 }
465 } else {
466 if (idx == wcid->hw_key_idx) {
467 wcid->hw_key_idx = -1;
468 wcid->sw_iv = false;
469 }
470
471 key = NULL;
472 }
473 mt76_wcid_key_setup(&dev->mt76, wcid, key);
474
475 if (!msta) {
476 if (key || wcid->hw_key_idx == idx) {
477 ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key);
478 if (ret)
479 return ret;
480 }
481
482 return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key);
483 }
484
485 return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key);
486 }
487 EXPORT_SYMBOL_GPL(mt76x02_set_key);
488
mt76x02_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)489 int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
490 u16 queue, const struct ieee80211_tx_queue_params *params)
491 {
492 struct mt76x02_dev *dev = hw->priv;
493 u8 cw_min = 5, cw_max = 10, qid;
494 u32 val;
495
496 qid = dev->mphy.q_tx[queue]->hw_idx;
497
498 if (params->cw_min)
499 cw_min = fls(params->cw_min);
500 if (params->cw_max)
501 cw_max = fls(params->cw_max);
502
503 val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) |
504 FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) |
505 FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) |
506 FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max);
507 mt76_wr(dev, MT_EDCA_CFG_AC(qid), val);
508
509 val = mt76_rr(dev, MT_WMM_TXOP(qid));
510 val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid));
511 val |= params->txop << MT_WMM_TXOP_SHIFT(qid);
512 mt76_wr(dev, MT_WMM_TXOP(qid), val);
513
514 val = mt76_rr(dev, MT_WMM_AIFSN);
515 val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid));
516 val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid);
517 mt76_wr(dev, MT_WMM_AIFSN, val);
518
519 val = mt76_rr(dev, MT_WMM_CWMIN);
520 val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
521 val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
522 mt76_wr(dev, MT_WMM_CWMIN, val);
523
524 val = mt76_rr(dev, MT_WMM_CWMAX);
525 val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid));
526 val |= cw_max << MT_WMM_CWMAX_SHIFT(qid);
527 mt76_wr(dev, MT_WMM_CWMAX, val);
528
529 return 0;
530 }
531 EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
532
mt76x02_set_tx_ackto(struct mt76x02_dev * dev)533 void mt76x02_set_tx_ackto(struct mt76x02_dev *dev)
534 {
535 u8 ackto, sifs, slottime = dev->slottime;
536
537 /* As defined by IEEE 802.11-2007 17.3.8.6 */
538 slottime += 3 * dev->coverage_class;
539 mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
540 MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
541
542 sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG,
543 MT_XIFS_TIME_CFG_OFDM_SIFS);
544
545 ackto = slottime + sifs;
546 mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG,
547 MT_TX_TIMEOUT_CFG_ACKTO, ackto);
548 }
549 EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
550
mt76x02_set_coverage_class(struct ieee80211_hw * hw,s16 coverage_class)551 void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
552 s16 coverage_class)
553 {
554 struct mt76x02_dev *dev = hw->priv;
555
556 mutex_lock(&dev->mt76.mutex);
557 dev->coverage_class = max_t(s16, coverage_class, 0);
558 mt76x02_set_tx_ackto(dev);
559 mutex_unlock(&dev->mt76.mutex);
560 }
561 EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
562
mt76x02_set_rts_threshold(struct ieee80211_hw * hw,u32 val)563 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
564 {
565 struct mt76x02_dev *dev = hw->priv;
566
567 if (val != ~0 && val > 0xffff)
568 return -EINVAL;
569
570 mutex_lock(&dev->mt76.mutex);
571 mt76x02_mac_set_rts_thresh(dev, val);
572 mutex_unlock(&dev->mt76.mutex);
573
574 return 0;
575 }
576 EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
577
mt76x02_sta_rate_tbl_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)578 void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
579 struct ieee80211_vif *vif,
580 struct ieee80211_sta *sta)
581 {
582 struct mt76x02_dev *dev = hw->priv;
583 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
584 struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates);
585 struct ieee80211_tx_rate rate = {};
586
587 if (!rates)
588 return;
589
590 rate.idx = rates->rate[0].idx;
591 rate.flags = rates->rate[0].flags;
592 mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate);
593 }
594 EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
595
mt76x02_remove_hdr_pad(struct sk_buff * skb,int len)596 void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len)
597 {
598 int hdrlen;
599
600 if (!len)
601 return;
602
603 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
604 memmove(skb->data + len, skb->data, hdrlen);
605 skb_pull(skb, len);
606 }
607 EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
608
mt76x02_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)609 void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
610 struct ieee80211_vif *vif)
611 {
612 struct mt76x02_dev *dev = hw->priv;
613
614 clear_bit(MT76_SCANNING, &dev->mphy.state);
615 if (dev->cal.gain_init_done) {
616 /* Restore AGC gain and resume calibration after scanning. */
617 dev->cal.low_gain = -1;
618 ieee80211_queue_delayed_work(hw, &dev->cal_work, 0);
619 }
620 }
621 EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
622
mt76x02_sta_ps(struct mt76_dev * mdev,struct ieee80211_sta * sta,bool ps)623 void mt76x02_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta,
624 bool ps)
625 {
626 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
627 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
628 int idx = msta->wcid.idx;
629
630 mt76_stop_tx_queues(&dev->mphy, sta, true);
631 if (mt76_is_mmio(mdev))
632 mt76x02_mac_wcid_set_drop(dev, idx, ps);
633 }
634 EXPORT_SYMBOL_GPL(mt76x02_sta_ps);
635
mt76x02_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)636 void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
637 struct ieee80211_vif *vif,
638 struct ieee80211_bss_conf *info,
639 u32 changed)
640 {
641 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
642 struct mt76x02_dev *dev = hw->priv;
643
644 mutex_lock(&dev->mt76.mutex);
645
646 if (changed & BSS_CHANGED_BSSID)
647 mt76x02_mac_set_bssid(dev, mvif->idx, info->bssid);
648
649 if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
650 mt76x02_mac_set_tx_protection(dev, info->use_cts_prot,
651 info->ht_operation_mode);
652
653 if (changed & BSS_CHANGED_BEACON_INT) {
654 mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
655 MT_BEACON_TIME_CFG_INTVAL,
656 info->beacon_int << 4);
657 dev->mt76.beacon_int = info->beacon_int;
658 }
659
660 if (changed & BSS_CHANGED_BEACON_ENABLED)
661 mt76x02_mac_set_beacon_enable(dev, vif, info->enable_beacon);
662
663 if (changed & BSS_CHANGED_ERP_PREAMBLE)
664 mt76x02_mac_set_short_preamble(dev, info->use_short_preamble);
665
666 if (changed & BSS_CHANGED_ERP_SLOT) {
667 int slottime = info->use_short_slot ? 9 : 20;
668
669 dev->slottime = slottime;
670 mt76x02_set_tx_ackto(dev);
671 }
672
673 mutex_unlock(&dev->mt76.mutex);
674 }
675 EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed);
676
mt76x02_config_mac_addr_list(struct mt76x02_dev * dev)677 void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev)
678 {
679 struct ieee80211_hw *hw = mt76_hw(dev);
680 struct wiphy *wiphy = hw->wiphy;
681 int i;
682
683 for (i = 0; i < ARRAY_SIZE(dev->macaddr_list); i++) {
684 u8 *addr = dev->macaddr_list[i].addr;
685
686 memcpy(addr, dev->mphy.macaddr, ETH_ALEN);
687
688 if (!i)
689 continue;
690
691 addr[0] |= BIT(1);
692 addr[0] ^= ((i - 1) << 2);
693 }
694 wiphy->addresses = dev->macaddr_list;
695 wiphy->n_addresses = ARRAY_SIZE(dev->macaddr_list);
696 }
697 EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list);
698
699 MODULE_LICENSE("Dual BSD/GPL");
700