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