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15#include "mt7601u.h"
16#include "mac.h"
17#include <linux/etherdevice.h>
18
19static int mt7601u_start(struct ieee80211_hw *hw)
20{
21 struct mt7601u_dev *dev = hw->priv;
22 int ret;
23
24 mutex_lock(&dev->mutex);
25
26 ret = mt7601u_mac_start(dev);
27 if (ret)
28 goto out;
29
30 ieee80211_queue_delayed_work(dev->hw, &dev->mac_work,
31 MT_CALIBRATE_INTERVAL);
32 ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
33 MT_CALIBRATE_INTERVAL);
34out:
35 mutex_unlock(&dev->mutex);
36 return ret;
37}
38
39static void mt7601u_stop(struct ieee80211_hw *hw)
40{
41 struct mt7601u_dev *dev = hw->priv;
42
43 mutex_lock(&dev->mutex);
44
45 cancel_delayed_work_sync(&dev->cal_work);
46 cancel_delayed_work_sync(&dev->mac_work);
47 mt7601u_mac_stop(dev);
48
49 mutex_unlock(&dev->mutex);
50}
51
52static int mt7601u_add_interface(struct ieee80211_hw *hw,
53 struct ieee80211_vif *vif)
54{
55 struct mt7601u_dev *dev = hw->priv;
56 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
57 unsigned int idx = 0;
58 unsigned int wcid = GROUP_WCID(idx);
59
60
61
62
63
64
65 mvif->idx = idx;
66
67 if (!ether_addr_equal(dev->macaddr, vif->addr))
68 mt7601u_set_macaddr(dev, vif->addr);
69
70 if (dev->wcid_mask[wcid / BITS_PER_LONG] & BIT(wcid % BITS_PER_LONG))
71 return -ENOSPC;
72 dev->wcid_mask[wcid / BITS_PER_LONG] |= BIT(wcid % BITS_PER_LONG);
73 mvif->group_wcid.idx = wcid;
74 mvif->group_wcid.hw_key_idx = -1;
75
76 return 0;
77}
78
79static void mt7601u_remove_interface(struct ieee80211_hw *hw,
80 struct ieee80211_vif *vif)
81{
82 struct mt7601u_dev *dev = hw->priv;
83 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
84 unsigned int wcid = mvif->group_wcid.idx;
85
86 dev->wcid_mask[wcid / BITS_PER_LONG] &= ~BIT(wcid % BITS_PER_LONG);
87}
88
89static int mt7601u_config(struct ieee80211_hw *hw, u32 changed)
90{
91 struct mt7601u_dev *dev = hw->priv;
92 int ret = 0;
93
94 mutex_lock(&dev->mutex);
95
96 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
97 ieee80211_stop_queues(hw);
98 ret = mt7601u_phy_set_channel(dev, &hw->conf.chandef);
99 ieee80211_wake_queues(hw);
100 }
101
102 mutex_unlock(&dev->mutex);
103
104 return ret;
105}
106
107static void
108mt76_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
109 unsigned int *total_flags, u64 multicast)
110{
111 struct mt7601u_dev *dev = hw->priv;
112 u32 flags = 0;
113
114#define MT76_FILTER(_flag, _hw) do { \
115 flags |= *total_flags & FIF_##_flag; \
116 dev->rxfilter &= ~(_hw); \
117 dev->rxfilter |= !(flags & FIF_##_flag) * (_hw); \
118 } while (0)
119
120 mutex_lock(&dev->mutex);
121
122 dev->rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
123
124 MT76_FILTER(OTHER_BSS, MT_RX_FILTR_CFG_PROMISC);
125 MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
126 MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
127 MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
128 MT_RX_FILTR_CFG_CTS |
129 MT_RX_FILTR_CFG_CFEND |
130 MT_RX_FILTR_CFG_CFACK |
131 MT_RX_FILTR_CFG_BA |
132 MT_RX_FILTR_CFG_CTRL_RSV);
133 MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
134
135 *total_flags = flags;
136 mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
137
138 mutex_unlock(&dev->mutex);
139}
140
141static void
142mt7601u_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
143 struct ieee80211_bss_conf *info, u32 changed)
144{
145 struct mt7601u_dev *dev = hw->priv;
146
147 mutex_lock(&dev->mutex);
148
149 if (changed & BSS_CHANGED_ASSOC)
150 mt7601u_phy_con_cal_onoff(dev, info);
151
152 if (changed & BSS_CHANGED_BSSID) {
153 mt7601u_addr_wr(dev, MT_MAC_BSSID_DW0, info->bssid);
154
155
156
157
158
159 if (is_zero_ether_addr(info->bssid))
160 mt7601u_mac_config_tsf(dev, false, 0);
161 }
162
163 if (changed & BSS_CHANGED_BASIC_RATES) {
164 mt7601u_wr(dev, MT_LEGACY_BASIC_RATE, info->basic_rates);
165 mt7601u_wr(dev, MT_HT_FBK_CFG0, 0x65432100);
166 mt7601u_wr(dev, MT_HT_FBK_CFG1, 0xedcba980);
167 mt7601u_wr(dev, MT_LG_FBK_CFG0, 0xedcba988);
168 mt7601u_wr(dev, MT_LG_FBK_CFG1, 0x00002100);
169 }
170
171 if (changed & BSS_CHANGED_BEACON_INT)
172 mt7601u_mac_config_tsf(dev, true, info->beacon_int);
173
174 if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
175 mt7601u_mac_set_protection(dev, info->use_cts_prot,
176 info->ht_operation_mode);
177
178 if (changed & BSS_CHANGED_ERP_PREAMBLE)
179 mt7601u_mac_set_short_preamble(dev, info->use_short_preamble);
180
181 if (changed & BSS_CHANGED_ERP_SLOT) {
182 int slottime = info->use_short_slot ? 9 : 20;
183
184 mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
185 MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
186 }
187
188 if (changed & BSS_CHANGED_ASSOC)
189 mt7601u_phy_recalibrate_after_assoc(dev);
190
191 mutex_unlock(&dev->mutex);
192}
193
194static int
195mt76_wcid_alloc(struct mt7601u_dev *dev)
196{
197 int i, idx = 0;
198
199 for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
200 idx = ffs(~dev->wcid_mask[i]);
201 if (!idx)
202 continue;
203
204 idx--;
205 dev->wcid_mask[i] |= BIT(idx);
206 break;
207 }
208
209 idx = i * BITS_PER_LONG + idx;
210 if (idx > 119)
211 return -1;
212
213 return idx;
214}
215
216static int
217mt7601u_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
218 struct ieee80211_sta *sta)
219{
220 struct mt7601u_dev *dev = hw->priv;
221 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
222 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
223 int ret = 0;
224 int idx = 0;
225
226 mutex_lock(&dev->mutex);
227
228 idx = mt76_wcid_alloc(dev);
229 if (idx < 0) {
230 ret = -ENOSPC;
231 goto out;
232 }
233
234 msta->wcid.idx = idx;
235 msta->wcid.hw_key_idx = -1;
236 mt7601u_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
237 mt76_clear(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
238 rcu_assign_pointer(dev->wcid[idx], &msta->wcid);
239 mt7601u_mac_set_ampdu_factor(dev);
240
241out:
242 mutex_unlock(&dev->mutex);
243
244 return ret;
245}
246
247static int
248mt7601u_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
249 struct ieee80211_sta *sta)
250{
251 struct mt7601u_dev *dev = hw->priv;
252 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
253 int idx = msta->wcid.idx;
254
255 mutex_lock(&dev->mutex);
256 rcu_assign_pointer(dev->wcid[idx], NULL);
257 mt76_set(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
258 dev->wcid_mask[idx / BITS_PER_LONG] &= ~BIT(idx % BITS_PER_LONG);
259 mt7601u_mac_wcid_setup(dev, idx, 0, NULL);
260 mt7601u_mac_set_ampdu_factor(dev);
261 mutex_unlock(&dev->mutex);
262
263 return 0;
264}
265
266static void
267mt7601u_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
268 enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
269{
270}
271
272static void
273mt7601u_sw_scan(struct ieee80211_hw *hw,
274 struct ieee80211_vif *vif,
275 const u8 *mac_addr)
276{
277 struct mt7601u_dev *dev = hw->priv;
278
279 mt7601u_agc_save(dev);
280 set_bit(MT7601U_STATE_SCANNING, &dev->state);
281}
282
283static void
284mt7601u_sw_scan_complete(struct ieee80211_hw *hw,
285 struct ieee80211_vif *vif)
286{
287 struct mt7601u_dev *dev = hw->priv;
288
289 mt7601u_agc_restore(dev);
290 clear_bit(MT7601U_STATE_SCANNING, &dev->state);
291
292 ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
293 MT_CALIBRATE_INTERVAL);
294 if (dev->freq_cal.enabled)
295 ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work,
296 MT_FREQ_CAL_INIT_DELAY);
297}
298
299static int
300mt7601u_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
301 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
302 struct ieee80211_key_conf *key)
303{
304 struct mt7601u_dev *dev = hw->priv;
305 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
306 struct mt76_sta *msta = sta ? (struct mt76_sta *) sta->drv_priv : NULL;
307 struct mt76_wcid *wcid = msta ? &msta->wcid : &mvif->group_wcid;
308 int idx = key->keyidx;
309 int ret;
310
311
312 switch (key->cipher) {
313 case WLAN_CIPHER_SUITE_WEP40:
314 case WLAN_CIPHER_SUITE_WEP104:
315 case WLAN_CIPHER_SUITE_TKIP:
316 case WLAN_CIPHER_SUITE_CCMP:
317 break;
318 default:
319 return -EOPNOTSUPP;
320 }
321
322 if (cmd == SET_KEY) {
323 key->hw_key_idx = wcid->idx;
324 wcid->hw_key_idx = idx;
325 } else {
326 if (idx == wcid->hw_key_idx)
327 wcid->hw_key_idx = -1;
328
329 key = NULL;
330 }
331
332 if (!msta) {
333 if (key || wcid->hw_key_idx == idx) {
334 ret = mt76_mac_wcid_set_key(dev, wcid->idx, key);
335 if (ret)
336 return ret;
337 }
338
339 return mt76_mac_shared_key_setup(dev, mvif->idx, idx, key);
340 }
341
342 return mt76_mac_wcid_set_key(dev, msta->wcid.idx, key);
343}
344
345static int mt7601u_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
346{
347 struct mt7601u_dev *dev = hw->priv;
348
349 mt76_rmw_field(dev, MT_TX_RTS_CFG, MT_TX_RTS_CFG_THRESH, value);
350
351 return 0;
352}
353
354static int
355mt76_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
356 struct ieee80211_ampdu_params *params)
357{
358 struct mt7601u_dev *dev = hw->priv;
359 struct ieee80211_sta *sta = params->sta;
360 enum ieee80211_ampdu_mlme_action action = params->action;
361 u16 tid = params->tid;
362 u16 *ssn = ¶ms->ssn;
363 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
364
365 WARN_ON(msta->wcid.idx > GROUP_WCID(0));
366
367 switch (action) {
368 case IEEE80211_AMPDU_RX_START:
369 mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
370 break;
371 case IEEE80211_AMPDU_RX_STOP:
372 mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
373 BIT(16 + tid));
374 break;
375 case IEEE80211_AMPDU_TX_OPERATIONAL:
376 ieee80211_send_bar(vif, sta->addr, tid, msta->agg_ssn[tid]);
377 break;
378 case IEEE80211_AMPDU_TX_STOP_FLUSH:
379 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
380 break;
381 case IEEE80211_AMPDU_TX_START:
382 msta->agg_ssn[tid] = *ssn << 4;
383 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
384 break;
385 case IEEE80211_AMPDU_TX_STOP_CONT:
386 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
387 break;
388 }
389
390 return 0;
391}
392
393static void
394mt76_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
395 struct ieee80211_sta *sta)
396{
397 struct mt7601u_dev *dev = hw->priv;
398 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
399 struct ieee80211_sta_rates *rates;
400 struct ieee80211_tx_rate rate = {};
401
402 rcu_read_lock();
403 rates = rcu_dereference(sta->rates);
404
405 if (!rates)
406 goto out;
407
408 rate.idx = rates->rate[0].idx;
409 rate.flags = rates->rate[0].flags;
410 mt76_mac_wcid_set_rate(dev, &msta->wcid, &rate);
411
412out:
413 rcu_read_unlock();
414}
415
416const struct ieee80211_ops mt7601u_ops = {
417 .tx = mt7601u_tx,
418 .start = mt7601u_start,
419 .stop = mt7601u_stop,
420 .add_interface = mt7601u_add_interface,
421 .remove_interface = mt7601u_remove_interface,
422 .config = mt7601u_config,
423 .configure_filter = mt76_configure_filter,
424 .bss_info_changed = mt7601u_bss_info_changed,
425 .sta_add = mt7601u_sta_add,
426 .sta_remove = mt7601u_sta_remove,
427 .sta_notify = mt7601u_sta_notify,
428 .set_key = mt7601u_set_key,
429 .conf_tx = mt7601u_conf_tx,
430 .sw_scan_start = mt7601u_sw_scan,
431 .sw_scan_complete = mt7601u_sw_scan_complete,
432 .ampdu_action = mt76_ampdu_action,
433 .sta_rate_tbl_update = mt76_sta_rate_tbl_update,
434 .set_rts_threshold = mt7601u_set_rts_threshold,
435};
436
