1
2
3
4
5
6
7
8
9
10
11
12
13
14
15#include "mt7601u.h"
16#include "mac.h"
17#include <linux/etherdevice.h>
18#include <linux/version.h>
19
20static int mt7601u_start(struct ieee80211_hw *hw)
21{
22 struct mt7601u_dev *dev = hw->priv;
23 int ret;
24
25 mutex_lock(&dev->mutex);
26
27 ret = mt7601u_mac_start(dev);
28 if (ret)
29 goto out;
30
31 ieee80211_queue_delayed_work(dev->hw, &dev->mac_work,
32 MT_CALIBRATE_INTERVAL);
33 ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
34 MT_CALIBRATE_INTERVAL);
35out:
36 mutex_unlock(&dev->mutex);
37 return ret;
38}
39
40static void mt7601u_stop(struct ieee80211_hw *hw)
41{
42 struct mt7601u_dev *dev = hw->priv;
43
44 mutex_lock(&dev->mutex);
45
46 cancel_delayed_work_sync(&dev->cal_work);
47 cancel_delayed_work_sync(&dev->mac_work);
48 mt7601u_mac_stop(dev);
49
50 mutex_unlock(&dev->mutex);
51}
52
53static int mt7601u_add_interface(struct ieee80211_hw *hw,
54 struct ieee80211_vif *vif)
55{
56 struct mt7601u_dev *dev = hw->priv;
57 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
58 unsigned int idx = 0;
59 unsigned int wcid = GROUP_WCID(idx);
60
61
62
63
64
65
66 mvif->idx = idx;
67
68 if (dev->wcid_mask[wcid / BITS_PER_LONG] & BIT(wcid % BITS_PER_LONG))
69 return -ENOSPC;
70 dev->wcid_mask[wcid / BITS_PER_LONG] |= BIT(wcid % BITS_PER_LONG);
71 mvif->group_wcid.idx = wcid;
72 mvif->group_wcid.hw_key_idx = -1;
73
74 return 0;
75}
76
77static void mt7601u_remove_interface(struct ieee80211_hw *hw,
78 struct ieee80211_vif *vif)
79{
80 struct mt7601u_dev *dev = hw->priv;
81 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
82 unsigned int wcid = mvif->group_wcid.idx;
83
84 dev->wcid_mask[wcid / BITS_PER_LONG] &= ~BIT(wcid % BITS_PER_LONG);
85}
86
87static int mt7601u_config(struct ieee80211_hw *hw, u32 changed)
88{
89 struct mt7601u_dev *dev = hw->priv;
90 int ret = 0;
91
92 mutex_lock(&dev->mutex);
93
94 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
95 ieee80211_stop_queues(hw);
96 ret = mt7601u_phy_set_channel(dev, &hw->conf.chandef);
97 ieee80211_wake_queues(hw);
98 }
99
100 mutex_unlock(&dev->mutex);
101
102 return ret;
103}
104
105static void
106mt76_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
107 unsigned int *total_flags, u64 multicast)
108{
109 struct mt7601u_dev *dev = hw->priv;
110 u32 flags = 0;
111
112#define MT76_FILTER(_flag, _hw) do { \
113 flags |= *total_flags & FIF_##_flag; \
114 dev->rxfilter &= ~(_hw); \
115 dev->rxfilter |= !(flags & FIF_##_flag) * (_hw); \
116 } while (0)
117
118 mutex_lock(&dev->mutex);
119
120 dev->rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
121
122 MT76_FILTER(OTHER_BSS, MT_RX_FILTR_CFG_PROMISC);
123 MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
124 MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
125 MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
126 MT_RX_FILTR_CFG_CTS |
127 MT_RX_FILTR_CFG_CFEND |
128 MT_RX_FILTR_CFG_CFACK |
129 MT_RX_FILTR_CFG_BA |
130 MT_RX_FILTR_CFG_CTRL_RSV);
131 MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
132
133 *total_flags = flags;
134 mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
135
136 mutex_unlock(&dev->mutex);
137}
138
139static void
140mt7601u_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
141 struct ieee80211_bss_conf *info, u32 changed)
142{
143 struct mt7601u_dev *dev = hw->priv;
144
145 mutex_lock(&dev->mutex);
146
147 if (changed & BSS_CHANGED_ASSOC)
148 mt7601u_phy_con_cal_onoff(dev, info);
149
150 if (changed & BSS_CHANGED_BSSID) {
151 mt7601u_addr_wr(dev, MT_MAC_BSSID_DW0, info->bssid);
152
153
154
155
156
157 if (is_zero_ether_addr(info->bssid))
158 mt7601u_mac_config_tsf(dev, false, 0);
159 }
160
161 if (changed & BSS_CHANGED_BASIC_RATES) {
162 mt7601u_wr(dev, MT_LEGACY_BASIC_RATE, info->basic_rates);
163 mt7601u_wr(dev, MT_HT_FBK_CFG0, 0x65432100);
164 mt7601u_wr(dev, MT_HT_FBK_CFG1, 0xedcba980);
165 mt7601u_wr(dev, MT_LG_FBK_CFG0, 0xedcba988);
166 mt7601u_wr(dev, MT_LG_FBK_CFG1, 0x00002100);
167 }
168
169 if (changed & BSS_CHANGED_BEACON_INT)
170 mt7601u_mac_config_tsf(dev, true, info->beacon_int);
171
172 if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
173 mt7601u_mac_set_protection(dev, info->use_cts_prot,
174 info->ht_operation_mode);
175
176 if (changed & BSS_CHANGED_ERP_PREAMBLE)
177 mt7601u_mac_set_short_preamble(dev, info->use_short_preamble);
178
179 if (changed & BSS_CHANGED_ERP_SLOT) {
180 int slottime = info->use_short_slot ? 9 : 20;
181
182 mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
183 MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
184 }
185
186 if (changed & BSS_CHANGED_ASSOC)
187 mt7601u_phy_recalibrate_after_assoc(dev);
188
189 mutex_unlock(&dev->mutex);
190}
191
192static int
193mt76_wcid_alloc(struct mt7601u_dev *dev)
194{
195 int i, idx = 0;
196
197 for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
198 idx = ffs(~dev->wcid_mask[i]);
199 if (!idx)
200 continue;
201
202 idx--;
203 dev->wcid_mask[i] |= BIT(idx);
204 break;
205 }
206
207 idx = i * BITS_PER_LONG + idx;
208 if (idx > 119)
209 return -1;
210
211 return idx;
212}
213
214static int
215mt7601u_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
216 struct ieee80211_sta *sta)
217{
218 struct mt7601u_dev *dev = hw->priv;
219 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
220 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
221 int ret = 0;
222 int idx = 0;
223
224 mutex_lock(&dev->mutex);
225
226 idx = mt76_wcid_alloc(dev);
227 if (idx < 0) {
228 ret = -ENOSPC;
229 goto out;
230 }
231
232 msta->wcid.idx = idx;
233 msta->wcid.hw_key_idx = -1;
234 mt7601u_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
235 mt76_clear(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
236 rcu_assign_pointer(dev->wcid[idx], &msta->wcid);
237 mt7601u_mac_set_ampdu_factor(dev);
238
239out:
240 mutex_unlock(&dev->mutex);
241
242 return ret;
243}
244
245static int
246mt7601u_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
247 struct ieee80211_sta *sta)
248{
249 struct mt7601u_dev *dev = hw->priv;
250 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
251 int idx = msta->wcid.idx;
252
253 mutex_lock(&dev->mutex);
254 rcu_assign_pointer(dev->wcid[idx], NULL);
255 mt76_set(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
256 dev->wcid_mask[idx / BITS_PER_LONG] &= ~BIT(idx % BITS_PER_LONG);
257 mt7601u_mac_wcid_setup(dev, idx, 0, NULL);
258 mt7601u_mac_set_ampdu_factor(dev);
259 mutex_unlock(&dev->mutex);
260
261 return 0;
262}
263
264static void
265mt7601u_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
266 enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
267{
268}
269
270static void
271mt7601u_sw_scan(struct ieee80211_hw *hw,
272 struct ieee80211_vif *vif,
273 const u8 *mac_addr)
274{
275 struct mt7601u_dev *dev = hw->priv;
276
277 mt7601u_agc_save(dev);
278 set_bit(MT7601U_STATE_SCANNING, &dev->state);
279}
280
281static void
282mt7601u_sw_scan_complete(struct ieee80211_hw *hw,
283 struct ieee80211_vif *vif)
284{
285 struct mt7601u_dev *dev = hw->priv;
286
287 mt7601u_agc_restore(dev);
288 clear_bit(MT7601U_STATE_SCANNING, &dev->state);
289}
290
291static int
292mt7601u_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
293 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
294 struct ieee80211_key_conf *key)
295{
296 struct mt7601u_dev *dev = hw->priv;
297 struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
298 struct mt76_sta *msta = sta ? (struct mt76_sta *) sta->drv_priv : NULL;
299 struct mt76_wcid *wcid = msta ? &msta->wcid : &mvif->group_wcid;
300 int idx = key->keyidx;
301 int ret;
302
303 if (cmd == SET_KEY) {
304 key->hw_key_idx = wcid->idx;
305 wcid->hw_key_idx = idx;
306 } else {
307 if (idx == wcid->hw_key_idx)
308 wcid->hw_key_idx = -1;
309
310 key = NULL;
311 }
312
313 if (!msta) {
314 if (key || wcid->hw_key_idx == idx) {
315 ret = mt76_mac_wcid_set_key(dev, wcid->idx, key);
316 if (ret)
317 return ret;
318 }
319
320 return mt76_mac_shared_key_setup(dev, mvif->idx, idx, key);
321 }
322
323 return mt76_mac_wcid_set_key(dev, msta->wcid.idx, key);
324}
325
326static int mt7601u_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
327{
328 struct mt7601u_dev *dev = hw->priv;
329
330 mt76_rmw_field(dev, MT_TX_RTS_CFG, MT_TX_RTS_CFG_THRESH, value);
331
332 return 0;
333}
334
335static int
336mt76_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
337 enum ieee80211_ampdu_mlme_action action,
338 struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size)
339{
340 struct mt7601u_dev *dev = hw->priv;
341 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
342
343 WARN_ON(msta->wcid.idx > GROUP_WCID(0));
344
345 switch (action) {
346 case IEEE80211_AMPDU_RX_START:
347 mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
348 break;
349 case IEEE80211_AMPDU_RX_STOP:
350 mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
351 BIT(16 + tid));
352 break;
353 case IEEE80211_AMPDU_TX_OPERATIONAL:
354 ieee80211_send_bar(vif, sta->addr, tid, msta->agg_ssn[tid]);
355 break;
356 case IEEE80211_AMPDU_TX_STOP_FLUSH:
357 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
358 break;
359 case IEEE80211_AMPDU_TX_START:
360 msta->agg_ssn[tid] = *ssn << 4;
361 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
362 break;
363 case IEEE80211_AMPDU_TX_STOP_CONT:
364 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
365 break;
366 }
367
368 return 0;
369}
370
371static void
372mt76_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
373 struct ieee80211_sta *sta)
374{
375 struct mt7601u_dev *dev = hw->priv;
376 struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
377 struct ieee80211_sta_rates *rates;
378 struct ieee80211_tx_rate rate = {};
379
380 rcu_read_lock();
381 rates = rcu_dereference(sta->rates);
382
383 if (!rates)
384 goto out;
385
386 rate.idx = rates->rate[0].idx;
387 rate.flags = rates->rate[0].flags;
388 mt76_mac_wcid_set_rate(dev, &msta->wcid, &rate);
389
390out:
391 rcu_read_unlock();
392}
393
394const struct ieee80211_ops mt7601u_ops = {
395 .tx = mt7601u_tx,
396 .start = mt7601u_start,
397 .stop = mt7601u_stop,
398 .add_interface = mt7601u_add_interface,
399 .remove_interface = mt7601u_remove_interface,
400 .config = mt7601u_config,
401 .configure_filter = mt76_configure_filter,
402 .bss_info_changed = mt7601u_bss_info_changed,
403 .sta_add = mt7601u_sta_add,
404 .sta_remove = mt7601u_sta_remove,
405 .sta_notify = mt7601u_sta_notify,
406 .set_key = mt7601u_set_key,
407 .conf_tx = mt7601u_conf_tx,
408 .sw_scan_start = mt7601u_sw_scan,
409 .sw_scan_complete = mt7601u_sw_scan_complete,
410 .ampdu_action = mt76_ampdu_action,
411 .sta_rate_tbl_update = mt76_sta_rate_tbl_update,
412 .set_rts_threshold = mt7601u_set_rts_threshold,
413};
414
