1 /*
2 * Copyright (c) 2010-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "htc.h"
18
19 /*************/
20 /* Utilities */
21 /*************/
22
23 /* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
ath9k_htc_get_curmode(struct ath9k_htc_priv * priv,struct ath9k_channel * ichan)24 static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
25 struct ath9k_channel *ichan)
26 {
27 if (IS_CHAN_5GHZ(ichan))
28 return HTC_MODE_11NA;
29
30 return HTC_MODE_11NG;
31 }
32
ath9k_htc_setpower(struct ath9k_htc_priv * priv,enum ath9k_power_mode mode)33 bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
34 enum ath9k_power_mode mode)
35 {
36 bool ret;
37
38 mutex_lock(&priv->htc_pm_lock);
39 ret = ath9k_hw_setpower(priv->ah, mode);
40 mutex_unlock(&priv->htc_pm_lock);
41
42 return ret;
43 }
44
ath9k_htc_ps_wakeup(struct ath9k_htc_priv * priv)45 void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
46 {
47 mutex_lock(&priv->htc_pm_lock);
48 if (++priv->ps_usecount != 1)
49 goto unlock;
50 ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
51
52 unlock:
53 mutex_unlock(&priv->htc_pm_lock);
54 }
55
ath9k_htc_ps_restore(struct ath9k_htc_priv * priv)56 void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
57 {
58 bool reset;
59
60 mutex_lock(&priv->htc_pm_lock);
61 if (--priv->ps_usecount != 0)
62 goto unlock;
63
64 if (priv->ps_idle) {
65 ath9k_hw_setrxabort(priv->ah, true);
66 ath9k_hw_stopdmarecv(priv->ah, &reset);
67 ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
68 } else if (priv->ps_enabled) {
69 ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
70 }
71
72 unlock:
73 mutex_unlock(&priv->htc_pm_lock);
74 }
75
ath9k_ps_work(struct work_struct * work)76 void ath9k_ps_work(struct work_struct *work)
77 {
78 struct ath9k_htc_priv *priv =
79 container_of(work, struct ath9k_htc_priv,
80 ps_work);
81 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
82
83 /* The chip wakes up after receiving the first beacon
84 while network sleep is enabled. For the driver to
85 be in sync with the hw, set the chip to awake and
86 only then set it to sleep.
87 */
88 ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
89 }
90
ath9k_htc_vif_iter(void * data,u8 * mac,struct ieee80211_vif * vif)91 static void ath9k_htc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
92 {
93 struct ath9k_htc_priv *priv = data;
94 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
95
96 if ((vif->type == NL80211_IFTYPE_AP ||
97 vif->type == NL80211_IFTYPE_MESH_POINT) &&
98 bss_conf->enable_beacon) {
99 priv->reconfig_beacon = true;
100 priv->rearm_ani = true;
101 }
102
103 if (vif->cfg.assoc) {
104 priv->rearm_ani = true;
105 priv->reconfig_beacon = true;
106 }
107 }
108
ath9k_htc_vif_reconfig(struct ath9k_htc_priv * priv)109 static void ath9k_htc_vif_reconfig(struct ath9k_htc_priv *priv)
110 {
111 priv->rearm_ani = false;
112 priv->reconfig_beacon = false;
113
114 ieee80211_iterate_active_interfaces_atomic(
115 priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
116 ath9k_htc_vif_iter, priv);
117 if (priv->rearm_ani)
118 ath9k_htc_start_ani(priv);
119
120 if (priv->reconfig_beacon) {
121 ath9k_htc_ps_wakeup(priv);
122 ath9k_htc_beacon_reconfig(priv);
123 ath9k_htc_ps_restore(priv);
124 }
125 }
126
ath9k_htc_bssid_iter(void * data,u8 * mac,struct ieee80211_vif * vif)127 static void ath9k_htc_bssid_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
128 {
129 struct ath9k_vif_iter_data *iter_data = data;
130 int i;
131
132 if (iter_data->hw_macaddr != NULL) {
133 for (i = 0; i < ETH_ALEN; i++)
134 iter_data->mask[i] &= ~(iter_data->hw_macaddr[i] ^ mac[i]);
135 } else {
136 iter_data->hw_macaddr = mac;
137 }
138 }
139
ath9k_htc_set_mac_bssid_mask(struct ath9k_htc_priv * priv,struct ieee80211_vif * vif)140 static void ath9k_htc_set_mac_bssid_mask(struct ath9k_htc_priv *priv,
141 struct ieee80211_vif *vif)
142 {
143 struct ath_common *common = ath9k_hw_common(priv->ah);
144 struct ath9k_vif_iter_data iter_data;
145
146 /*
147 * Pick the MAC address of the first interface as the new hardware
148 * MAC address. The hardware will use it together with the BSSID mask
149 * when matching addresses.
150 */
151 iter_data.hw_macaddr = NULL;
152 eth_broadcast_addr(iter_data.mask);
153
154 if (vif)
155 ath9k_htc_bssid_iter(&iter_data, vif->addr, vif);
156
157 /* Get list of all active MAC addresses */
158 ieee80211_iterate_active_interfaces_atomic(
159 priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
160 ath9k_htc_bssid_iter, &iter_data);
161
162 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
163
164 if (iter_data.hw_macaddr)
165 memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN);
166
167 ath_hw_setbssidmask(common);
168 }
169
ath9k_htc_set_opmode(struct ath9k_htc_priv * priv)170 static void ath9k_htc_set_opmode(struct ath9k_htc_priv *priv)
171 {
172 if (priv->num_ibss_vif)
173 priv->ah->opmode = NL80211_IFTYPE_ADHOC;
174 else if (priv->num_ap_vif)
175 priv->ah->opmode = NL80211_IFTYPE_AP;
176 else if (priv->num_mbss_vif)
177 priv->ah->opmode = NL80211_IFTYPE_MESH_POINT;
178 else
179 priv->ah->opmode = NL80211_IFTYPE_STATION;
180
181 ath9k_hw_setopmode(priv->ah);
182 }
183
ath9k_htc_reset(struct ath9k_htc_priv * priv)184 void ath9k_htc_reset(struct ath9k_htc_priv *priv)
185 {
186 struct ath_hw *ah = priv->ah;
187 struct ath_common *common = ath9k_hw_common(ah);
188 struct ieee80211_channel *channel = priv->hw->conf.chandef.chan;
189 struct ath9k_hw_cal_data *caldata = NULL;
190 enum htc_phymode mode;
191 __be16 htc_mode;
192 u8 cmd_rsp;
193 int ret;
194
195 mutex_lock(&priv->mutex);
196 ath9k_htc_ps_wakeup(priv);
197
198 ath9k_htc_stop_ani(priv);
199 ieee80211_stop_queues(priv->hw);
200
201 del_timer_sync(&priv->tx.cleanup_timer);
202 ath9k_htc_tx_drain(priv);
203
204 WMI_CMD(WMI_DISABLE_INTR_CMDID);
205 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
206 WMI_CMD(WMI_STOP_RECV_CMDID);
207
208 ath9k_wmi_event_drain(priv);
209
210 caldata = &priv->caldata;
211 ret = ath9k_hw_reset(ah, ah->curchan, caldata, false);
212 if (ret) {
213 ath_err(common,
214 "Unable to reset device (%u Mhz) reset status %d\n",
215 channel->center_freq, ret);
216 }
217
218 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
219 &priv->curtxpow);
220
221 WMI_CMD(WMI_START_RECV_CMDID);
222 ath9k_host_rx_init(priv);
223
224 mode = ath9k_htc_get_curmode(priv, ah->curchan);
225 htc_mode = cpu_to_be16(mode);
226 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
227
228 WMI_CMD(WMI_ENABLE_INTR_CMDID);
229 htc_start(priv->htc);
230 ath9k_htc_vif_reconfig(priv);
231 ieee80211_wake_queues(priv->hw);
232
233 mod_timer(&priv->tx.cleanup_timer,
234 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
235
236 ath9k_htc_ps_restore(priv);
237 mutex_unlock(&priv->mutex);
238 }
239
ath9k_htc_set_channel(struct ath9k_htc_priv * priv,struct ieee80211_hw * hw,struct ath9k_channel * hchan)240 static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
241 struct ieee80211_hw *hw,
242 struct ath9k_channel *hchan)
243 {
244 struct ath_hw *ah = priv->ah;
245 struct ath_common *common = ath9k_hw_common(ah);
246 struct ieee80211_conf *conf = &common->hw->conf;
247 bool fastcc;
248 struct ieee80211_channel *channel = hw->conf.chandef.chan;
249 struct ath9k_hw_cal_data *caldata;
250 enum htc_phymode mode;
251 __be16 htc_mode;
252 u8 cmd_rsp;
253 int ret;
254
255 if (test_bit(ATH_OP_INVALID, &common->op_flags))
256 return -EIO;
257
258 fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
259
260 ath9k_htc_ps_wakeup(priv);
261
262 ath9k_htc_stop_ani(priv);
263 del_timer_sync(&priv->tx.cleanup_timer);
264 ath9k_htc_tx_drain(priv);
265
266 WMI_CMD(WMI_DISABLE_INTR_CMDID);
267 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
268 WMI_CMD(WMI_STOP_RECV_CMDID);
269
270 ath9k_wmi_event_drain(priv);
271
272 ath_dbg(common, CONFIG,
273 "(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n",
274 priv->ah->curchan->channel,
275 channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
276 fastcc);
277 caldata = fastcc ? NULL : &priv->caldata;
278 ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
279 if (ret) {
280 ath_err(common,
281 "Unable to reset channel (%u Mhz) reset status %d\n",
282 channel->center_freq, ret);
283 goto err;
284 }
285
286 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
287 &priv->curtxpow);
288
289 WMI_CMD(WMI_START_RECV_CMDID);
290 if (ret)
291 goto err;
292
293 ath9k_host_rx_init(priv);
294
295 mode = ath9k_htc_get_curmode(priv, hchan);
296 htc_mode = cpu_to_be16(mode);
297 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
298 if (ret)
299 goto err;
300
301 WMI_CMD(WMI_ENABLE_INTR_CMDID);
302 if (ret)
303 goto err;
304
305 htc_start(priv->htc);
306
307 if (!test_bit(ATH_OP_SCANNING, &common->op_flags) &&
308 !(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
309 ath9k_htc_vif_reconfig(priv);
310
311 mod_timer(&priv->tx.cleanup_timer,
312 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
313
314 /* perform spectral scan if requested. */
315 if (test_bit(ATH_OP_SCANNING, &common->op_flags) &&
316 priv->spec_priv.spectral_mode == SPECTRAL_CHANSCAN)
317 ath9k_cmn_spectral_scan_trigger(common, &priv->spec_priv);
318 err:
319 ath9k_htc_ps_restore(priv);
320 return ret;
321 }
322
323 /*
324 * Monitor mode handling is a tad complicated because the firmware requires
325 * an interface to be created exclusively, while mac80211 doesn't associate
326 * an interface with the mode.
327 *
328 * So, for now, only one monitor interface can be configured.
329 */
__ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv * priv)330 static void __ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
331 {
332 struct ath_common *common = ath9k_hw_common(priv->ah);
333 struct ath9k_htc_target_vif hvif;
334 int ret = 0;
335 u8 cmd_rsp;
336
337 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
338 memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
339 hvif.index = priv->mon_vif_idx;
340 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
341 if (ret) {
342 ath_err(common, "Unable to remove monitor interface at idx: %d\n",
343 priv->mon_vif_idx);
344 }
345
346 priv->nvifs--;
347 priv->vif_slot &= ~(1 << priv->mon_vif_idx);
348 }
349
ath9k_htc_add_monitor_interface(struct ath9k_htc_priv * priv)350 static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
351 {
352 struct ath_common *common = ath9k_hw_common(priv->ah);
353 struct ath9k_htc_target_vif hvif;
354 struct ath9k_htc_target_sta tsta;
355 int ret = 0, sta_idx;
356 u8 cmd_rsp;
357
358 if ((priv->nvifs >= ATH9K_HTC_MAX_VIF) ||
359 (priv->nstations >= ATH9K_HTC_MAX_STA)) {
360 ret = -ENOBUFS;
361 goto err_vif;
362 }
363
364 sta_idx = ffz(priv->sta_slot);
365 if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA)) {
366 ret = -ENOBUFS;
367 goto err_vif;
368 }
369
370 /*
371 * Add an interface.
372 */
373 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
374 memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
375
376 hvif.opmode = HTC_M_MONITOR;
377 hvif.index = ffz(priv->vif_slot);
378
379 WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
380 if (ret)
381 goto err_vif;
382
383 /*
384 * Assign the monitor interface index as a special case here.
385 * This is needed when the interface is brought down.
386 */
387 priv->mon_vif_idx = hvif.index;
388 priv->vif_slot |= (1 << hvif.index);
389
390 /*
391 * Set the hardware mode to monitor only if there are no
392 * other interfaces.
393 */
394 if (!priv->nvifs)
395 priv->ah->opmode = NL80211_IFTYPE_MONITOR;
396
397 priv->nvifs++;
398
399 /*
400 * Associate a station with the interface for packet injection.
401 */
402 memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
403
404 memcpy(&tsta.macaddr, common->macaddr, ETH_ALEN);
405
406 tsta.is_vif_sta = 1;
407 tsta.sta_index = sta_idx;
408 tsta.vif_index = hvif.index;
409 tsta.maxampdu = cpu_to_be16(0xffff);
410
411 WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
412 if (ret) {
413 ath_err(common, "Unable to add station entry for monitor mode\n");
414 goto err_sta;
415 }
416
417 priv->sta_slot |= (1 << sta_idx);
418 priv->nstations++;
419 priv->vif_sta_pos[priv->mon_vif_idx] = sta_idx;
420 priv->ah->is_monitoring = true;
421
422 ath_dbg(common, CONFIG,
423 "Attached a monitor interface at idx: %d, sta idx: %d\n",
424 priv->mon_vif_idx, sta_idx);
425
426 return 0;
427
428 err_sta:
429 /*
430 * Remove the interface from the target.
431 */
432 __ath9k_htc_remove_monitor_interface(priv);
433 err_vif:
434 ath_dbg(common, FATAL, "Unable to attach a monitor interface\n");
435
436 return ret;
437 }
438
ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv * priv)439 static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
440 {
441 struct ath_common *common = ath9k_hw_common(priv->ah);
442 int ret = 0;
443 u8 cmd_rsp, sta_idx;
444
445 __ath9k_htc_remove_monitor_interface(priv);
446
447 sta_idx = priv->vif_sta_pos[priv->mon_vif_idx];
448
449 WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
450 if (ret) {
451 ath_err(common, "Unable to remove station entry for monitor mode\n");
452 return ret;
453 }
454
455 priv->sta_slot &= ~(1 << sta_idx);
456 priv->nstations--;
457 priv->ah->is_monitoring = false;
458
459 ath_dbg(common, CONFIG,
460 "Removed a monitor interface at idx: %d, sta idx: %d\n",
461 priv->mon_vif_idx, sta_idx);
462
463 return 0;
464 }
465
ath9k_htc_add_station(struct ath9k_htc_priv * priv,struct ieee80211_vif * vif,struct ieee80211_sta * sta)466 static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
467 struct ieee80211_vif *vif,
468 struct ieee80211_sta *sta)
469 {
470 struct ath_common *common = ath9k_hw_common(priv->ah);
471 struct ath9k_htc_target_sta tsta;
472 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
473 struct ath9k_htc_sta *ista;
474 int ret, sta_idx;
475 u8 cmd_rsp;
476 u16 maxampdu;
477
478 if (priv->nstations >= ATH9K_HTC_MAX_STA)
479 return -ENOBUFS;
480
481 sta_idx = ffz(priv->sta_slot);
482 if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA))
483 return -ENOBUFS;
484
485 memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
486
487 if (sta) {
488 ista = (struct ath9k_htc_sta *) sta->drv_priv;
489 memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
490 memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
491 ista->index = sta_idx;
492 tsta.is_vif_sta = 0;
493 maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
494 sta->deflink.ht_cap.ampdu_factor);
495 tsta.maxampdu = cpu_to_be16(maxampdu);
496 } else {
497 memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
498 tsta.is_vif_sta = 1;
499 tsta.maxampdu = cpu_to_be16(0xffff);
500 }
501
502 tsta.sta_index = sta_idx;
503 tsta.vif_index = avp->index;
504
505 WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
506 if (ret) {
507 if (sta)
508 ath_err(common,
509 "Unable to add station entry for: %pM\n",
510 sta->addr);
511 return ret;
512 }
513
514 if (sta) {
515 ath_dbg(common, CONFIG,
516 "Added a station entry for: %pM (idx: %d)\n",
517 sta->addr, tsta.sta_index);
518 } else {
519 ath_dbg(common, CONFIG,
520 "Added a station entry for VIF %d (idx: %d)\n",
521 avp->index, tsta.sta_index);
522 }
523
524 priv->sta_slot |= (1 << sta_idx);
525 priv->nstations++;
526 if (!sta)
527 priv->vif_sta_pos[avp->index] = sta_idx;
528
529 return 0;
530 }
531
ath9k_htc_remove_station(struct ath9k_htc_priv * priv,struct ieee80211_vif * vif,struct ieee80211_sta * sta)532 static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv,
533 struct ieee80211_vif *vif,
534 struct ieee80211_sta *sta)
535 {
536 struct ath_common *common = ath9k_hw_common(priv->ah);
537 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
538 struct ath9k_htc_sta *ista;
539 int ret;
540 u8 cmd_rsp, sta_idx;
541
542 if (sta) {
543 ista = (struct ath9k_htc_sta *) sta->drv_priv;
544 sta_idx = ista->index;
545 } else {
546 sta_idx = priv->vif_sta_pos[avp->index];
547 }
548
549 WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
550 if (ret) {
551 if (sta)
552 ath_err(common,
553 "Unable to remove station entry for: %pM\n",
554 sta->addr);
555 return ret;
556 }
557
558 if (sta) {
559 ath_dbg(common, CONFIG,
560 "Removed a station entry for: %pM (idx: %d)\n",
561 sta->addr, sta_idx);
562 } else {
563 ath_dbg(common, CONFIG,
564 "Removed a station entry for VIF %d (idx: %d)\n",
565 avp->index, sta_idx);
566 }
567
568 priv->sta_slot &= ~(1 << sta_idx);
569 priv->nstations--;
570
571 return 0;
572 }
573
ath9k_htc_update_cap_target(struct ath9k_htc_priv * priv,u8 enable_coex)574 int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv,
575 u8 enable_coex)
576 {
577 struct ath9k_htc_cap_target tcap;
578 int ret;
579 u8 cmd_rsp;
580
581 memset(&tcap, 0, sizeof(struct ath9k_htc_cap_target));
582
583 tcap.ampdu_limit = cpu_to_be32(0xffff);
584 tcap.ampdu_subframes = 0xff;
585 tcap.enable_coex = enable_coex;
586 tcap.tx_chainmask = priv->ah->caps.tx_chainmask;
587
588 WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap);
589
590 return ret;
591 }
592
ath9k_htc_setup_rate(struct ath9k_htc_priv * priv,struct ieee80211_sta * sta,struct ath9k_htc_target_rate * trate)593 static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
594 struct ieee80211_sta *sta,
595 struct ath9k_htc_target_rate *trate)
596 {
597 struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
598 struct ieee80211_supported_band *sband;
599 u32 caps = 0;
600 int i, j;
601
602 sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band];
603
604 for (i = 0, j = 0; i < sband->n_bitrates; i++) {
605 if (sta->deflink.supp_rates[sband->band] & BIT(i)) {
606 trate->rates.legacy_rates.rs_rates[j]
607 = (sband->bitrates[i].bitrate * 2) / 10;
608 j++;
609 }
610 }
611 trate->rates.legacy_rates.rs_nrates = j;
612
613 if (sta->deflink.ht_cap.ht_supported) {
614 for (i = 0, j = 0; i < 77; i++) {
615 if (sta->deflink.ht_cap.mcs.rx_mask[i/8] & (1<<(i%8)))
616 trate->rates.ht_rates.rs_rates[j++] = i;
617 if (j == ATH_HTC_RATE_MAX)
618 break;
619 }
620 trate->rates.ht_rates.rs_nrates = j;
621
622 caps = WLAN_RC_HT_FLAG;
623 if (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_RX_STBC)
624 caps |= ATH_RC_TX_STBC_FLAG;
625 if (sta->deflink.ht_cap.mcs.rx_mask[1])
626 caps |= WLAN_RC_DS_FLAG;
627 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
628 (conf_is_ht40(&priv->hw->conf)))
629 caps |= WLAN_RC_40_FLAG;
630 if (conf_is_ht40(&priv->hw->conf) &&
631 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
632 caps |= WLAN_RC_SGI_FLAG;
633 else if (conf_is_ht20(&priv->hw->conf) &&
634 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20))
635 caps |= WLAN_RC_SGI_FLAG;
636 }
637
638 trate->sta_index = ista->index;
639 trate->isnew = 1;
640 trate->capflags = cpu_to_be32(caps);
641 }
642
ath9k_htc_send_rate_cmd(struct ath9k_htc_priv * priv,struct ath9k_htc_target_rate * trate)643 static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv,
644 struct ath9k_htc_target_rate *trate)
645 {
646 struct ath_common *common = ath9k_hw_common(priv->ah);
647 int ret;
648 u8 cmd_rsp;
649
650 WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate);
651 if (ret) {
652 ath_err(common,
653 "Unable to initialize Rate information on target\n");
654 }
655
656 return ret;
657 }
658
ath9k_htc_init_rate(struct ath9k_htc_priv * priv,struct ieee80211_sta * sta)659 static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
660 struct ieee80211_sta *sta)
661 {
662 struct ath_common *common = ath9k_hw_common(priv->ah);
663 struct ath9k_htc_target_rate trate;
664 int ret;
665
666 memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
667 ath9k_htc_setup_rate(priv, sta, &trate);
668 ret = ath9k_htc_send_rate_cmd(priv, &trate);
669 if (!ret)
670 ath_dbg(common, CONFIG,
671 "Updated target sta: %pM, rate caps: 0x%X\n",
672 sta->addr, be32_to_cpu(trate.capflags));
673 }
674
ath9k_htc_update_rate(struct ath9k_htc_priv * priv,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf)675 static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
676 struct ieee80211_vif *vif,
677 struct ieee80211_bss_conf *bss_conf)
678 {
679 struct ath_common *common = ath9k_hw_common(priv->ah);
680 struct ath9k_htc_target_rate trate;
681 struct ieee80211_sta *sta;
682 int ret;
683
684 memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
685
686 rcu_read_lock();
687 sta = ieee80211_find_sta(vif, bss_conf->bssid);
688 if (!sta) {
689 rcu_read_unlock();
690 return;
691 }
692 ath9k_htc_setup_rate(priv, sta, &trate);
693 rcu_read_unlock();
694
695 ret = ath9k_htc_send_rate_cmd(priv, &trate);
696 if (!ret)
697 ath_dbg(common, CONFIG,
698 "Updated target sta: %pM, rate caps: 0x%X\n",
699 bss_conf->bssid, be32_to_cpu(trate.capflags));
700 }
701
ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv * priv,struct ieee80211_vif * vif,struct ieee80211_sta * sta,enum ieee80211_ampdu_mlme_action action,u16 tid)702 static int ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv *priv,
703 struct ieee80211_vif *vif,
704 struct ieee80211_sta *sta,
705 enum ieee80211_ampdu_mlme_action action,
706 u16 tid)
707 {
708 struct ath_common *common = ath9k_hw_common(priv->ah);
709 struct ath9k_htc_target_aggr aggr;
710 struct ath9k_htc_sta *ista;
711 int ret = 0;
712 u8 cmd_rsp;
713
714 if (tid >= ATH9K_HTC_MAX_TID)
715 return -EINVAL;
716
717 memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));
718 ista = (struct ath9k_htc_sta *) sta->drv_priv;
719
720 aggr.sta_index = ista->index;
721 aggr.tidno = tid & 0xf;
722 aggr.aggr_enable = action == IEEE80211_AMPDU_TX_START;
723
724 WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
725 if (ret)
726 ath_dbg(common, CONFIG,
727 "Unable to %s TX aggregation for (%pM, %d)\n",
728 (aggr.aggr_enable) ? "start" : "stop", sta->addr, tid);
729 else
730 ath_dbg(common, CONFIG,
731 "%s TX aggregation for (%pM, %d)\n",
732 (aggr.aggr_enable) ? "Starting" : "Stopping",
733 sta->addr, tid);
734
735 spin_lock_bh(&priv->tx.tx_lock);
736 ista->tid_state[tid] = (aggr.aggr_enable && !ret) ? AGGR_START : AGGR_STOP;
737 spin_unlock_bh(&priv->tx.tx_lock);
738
739 return ret;
740 }
741
742 /*******/
743 /* ANI */
744 /*******/
745
ath9k_htc_start_ani(struct ath9k_htc_priv * priv)746 void ath9k_htc_start_ani(struct ath9k_htc_priv *priv)
747 {
748 struct ath_common *common = ath9k_hw_common(priv->ah);
749 unsigned long timestamp = jiffies_to_msecs(jiffies);
750
751 common->ani.longcal_timer = timestamp;
752 common->ani.shortcal_timer = timestamp;
753 common->ani.checkani_timer = timestamp;
754
755 set_bit(ATH_OP_ANI_RUN, &common->op_flags);
756
757 ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
758 msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
759 }
760
ath9k_htc_stop_ani(struct ath9k_htc_priv * priv)761 void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv)
762 {
763 struct ath_common *common = ath9k_hw_common(priv->ah);
764 cancel_delayed_work_sync(&priv->ani_work);
765 clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
766 }
767
ath9k_htc_ani_work(struct work_struct * work)768 void ath9k_htc_ani_work(struct work_struct *work)
769 {
770 struct ath9k_htc_priv *priv =
771 container_of(work, struct ath9k_htc_priv, ani_work.work);
772 struct ath_hw *ah = priv->ah;
773 struct ath_common *common = ath9k_hw_common(ah);
774 bool longcal = false;
775 bool shortcal = false;
776 bool aniflag = false;
777 unsigned int timestamp = jiffies_to_msecs(jiffies);
778 u32 cal_interval, short_cal_interval;
779
780 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
781 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
782
783 /* Only calibrate if awake */
784 if (ah->power_mode != ATH9K_PM_AWAKE)
785 goto set_timer;
786
787 /* Long calibration runs independently of short calibration. */
788 if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
789 longcal = true;
790 ath_dbg(common, ANI, "longcal @%lu\n", jiffies);
791 common->ani.longcal_timer = timestamp;
792 }
793
794 /*
795 * Short calibration applies only while caldone
796 * is false or -ETIMEDOUT
797 */
798 if (common->ani.caldone <= 0) {
799 if ((timestamp - common->ani.shortcal_timer) >=
800 short_cal_interval) {
801 shortcal = true;
802 ath_dbg(common, ANI, "shortcal @%lu\n", jiffies);
803 common->ani.shortcal_timer = timestamp;
804 common->ani.resetcal_timer = timestamp;
805 }
806 } else {
807 if ((timestamp - common->ani.resetcal_timer) >=
808 ATH_RESTART_CALINTERVAL) {
809 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
810 if (common->ani.caldone)
811 common->ani.resetcal_timer = timestamp;
812 }
813 }
814
815 /* Verify whether we must check ANI */
816 if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
817 aniflag = true;
818 common->ani.checkani_timer = timestamp;
819 }
820
821 /* Skip all processing if there's nothing to do. */
822 if (longcal || shortcal || aniflag) {
823
824 ath9k_htc_ps_wakeup(priv);
825
826 /* Call ANI routine if necessary */
827 if (aniflag)
828 ath9k_hw_ani_monitor(ah, ah->curchan);
829
830 /* Perform calibration if necessary */
831 if (longcal || shortcal)
832 common->ani.caldone =
833 ath9k_hw_calibrate(ah, ah->curchan,
834 ah->rxchainmask, longcal) > 0;
835
836 ath9k_htc_ps_restore(priv);
837 }
838
839 set_timer:
840 /*
841 * Set timer interval based on previous results.
842 * The interval must be the shortest necessary to satisfy ANI,
843 * short calibration and long calibration.
844 */
845 cal_interval = ATH_LONG_CALINTERVAL;
846 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
847 /*
848 * Short calibration applies only while caldone
849 * is false or -ETIMEDOUT
850 */
851 if (common->ani.caldone <= 0)
852 cal_interval = min(cal_interval, (u32)short_cal_interval);
853
854 ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
855 msecs_to_jiffies(cal_interval));
856 }
857
858 /**********************/
859 /* mac80211 Callbacks */
860 /**********************/
861
ath9k_htc_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)862 static void ath9k_htc_tx(struct ieee80211_hw *hw,
863 struct ieee80211_tx_control *control,
864 struct sk_buff *skb)
865 {
866 struct ieee80211_hdr *hdr;
867 struct ath9k_htc_priv *priv = hw->priv;
868 struct ath_common *common = ath9k_hw_common(priv->ah);
869 int padpos, padsize, ret, slot;
870
871 hdr = (struct ieee80211_hdr *) skb->data;
872
873 /* Add the padding after the header if this is not already done */
874 padpos = ieee80211_hdrlen(hdr->frame_control);
875 padsize = padpos & 3;
876 if (padsize && skb->len > padpos) {
877 if (skb_headroom(skb) < padsize) {
878 ath_dbg(common, XMIT, "No room for padding\n");
879 goto fail_tx;
880 }
881 skb_push(skb, padsize);
882 memmove(skb->data, skb->data + padsize, padpos);
883 }
884
885 slot = ath9k_htc_tx_get_slot(priv);
886 if (slot < 0) {
887 ath_dbg(common, XMIT, "No free TX slot\n");
888 goto fail_tx;
889 }
890
891 ret = ath9k_htc_tx_start(priv, control->sta, skb, slot, false);
892 if (ret != 0) {
893 ath_dbg(common, XMIT, "Tx failed\n");
894 goto clear_slot;
895 }
896
897 ath9k_htc_check_stop_queues(priv);
898
899 return;
900
901 clear_slot:
902 ath9k_htc_tx_clear_slot(priv, slot);
903 fail_tx:
904 dev_kfree_skb_any(skb);
905 }
906
ath9k_htc_start(struct ieee80211_hw * hw)907 static int ath9k_htc_start(struct ieee80211_hw *hw)
908 {
909 struct ath9k_htc_priv *priv = hw->priv;
910 struct ath_hw *ah = priv->ah;
911 struct ath_common *common = ath9k_hw_common(ah);
912 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
913 struct ath9k_channel *init_channel;
914 int ret = 0;
915 enum htc_phymode mode;
916 __be16 htc_mode;
917 u8 cmd_rsp;
918
919 mutex_lock(&priv->mutex);
920
921 ath_dbg(common, CONFIG,
922 "Starting driver with initial channel: %d MHz\n",
923 curchan->center_freq);
924
925 /* Ensure that HW is awake before flushing RX */
926 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
927 WMI_CMD(WMI_FLUSH_RECV_CMDID);
928
929 /* setup initial channel */
930 init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
931
932 ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
933 if (ret) {
934 ath_err(common,
935 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
936 ret, curchan->center_freq);
937 mutex_unlock(&priv->mutex);
938 return ret;
939 }
940
941 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
942 &priv->curtxpow);
943
944 mode = ath9k_htc_get_curmode(priv, init_channel);
945 htc_mode = cpu_to_be16(mode);
946 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
947 WMI_CMD(WMI_ATH_INIT_CMDID);
948 WMI_CMD(WMI_START_RECV_CMDID);
949
950 ath9k_host_rx_init(priv);
951
952 ret = ath9k_htc_update_cap_target(priv, 0);
953 if (ret)
954 ath_dbg(common, CONFIG,
955 "Failed to update capability in target\n");
956
957 clear_bit(ATH_OP_INVALID, &common->op_flags);
958 htc_start(priv->htc);
959
960 spin_lock_bh(&priv->tx.tx_lock);
961 priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
962 spin_unlock_bh(&priv->tx.tx_lock);
963
964 ieee80211_wake_queues(hw);
965
966 mod_timer(&priv->tx.cleanup_timer,
967 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
968
969 ath9k_htc_start_btcoex(priv);
970
971 mutex_unlock(&priv->mutex);
972
973 return ret;
974 }
975
ath9k_htc_stop(struct ieee80211_hw * hw)976 static void ath9k_htc_stop(struct ieee80211_hw *hw)
977 {
978 struct ath9k_htc_priv *priv = hw->priv;
979 struct ath_hw *ah = priv->ah;
980 struct ath_common *common = ath9k_hw_common(ah);
981 int ret __attribute__ ((unused));
982 u8 cmd_rsp;
983
984 mutex_lock(&priv->mutex);
985
986 if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
987 ath_dbg(common, ANY, "Device not present\n");
988 mutex_unlock(&priv->mutex);
989 return;
990 }
991
992 ath9k_htc_ps_wakeup(priv);
993
994 WMI_CMD(WMI_DISABLE_INTR_CMDID);
995 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
996 WMI_CMD(WMI_STOP_RECV_CMDID);
997
998 tasklet_kill(&priv->rx_tasklet);
999
1000 del_timer_sync(&priv->tx.cleanup_timer);
1001 ath9k_htc_tx_drain(priv);
1002 ath9k_wmi_event_drain(priv);
1003
1004 mutex_unlock(&priv->mutex);
1005
1006 /* Cancel all the running timers/work .. */
1007 cancel_work_sync(&priv->fatal_work);
1008 cancel_work_sync(&priv->ps_work);
1009
1010 #ifdef CONFIG_MAC80211_LEDS
1011 cancel_work_sync(&priv->led_work);
1012 #endif
1013 ath9k_htc_stop_ani(priv);
1014
1015 mutex_lock(&priv->mutex);
1016
1017 ath9k_htc_stop_btcoex(priv);
1018
1019 /* Remove a monitor interface if it's present. */
1020 if (priv->ah->is_monitoring)
1021 ath9k_htc_remove_monitor_interface(priv);
1022
1023 ath9k_hw_phy_disable(ah);
1024 ath9k_hw_disable(ah);
1025 ath9k_htc_ps_restore(priv);
1026 ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
1027
1028 set_bit(ATH_OP_INVALID, &common->op_flags);
1029
1030 ath_dbg(common, CONFIG, "Driver halt\n");
1031 mutex_unlock(&priv->mutex);
1032 }
1033
ath9k_htc_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1034 static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
1035 struct ieee80211_vif *vif)
1036 {
1037 struct ath9k_htc_priv *priv = hw->priv;
1038 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1039 struct ath_common *common = ath9k_hw_common(priv->ah);
1040 struct ath9k_htc_target_vif hvif;
1041 int ret = 0;
1042 u8 cmd_rsp;
1043
1044 mutex_lock(&priv->mutex);
1045
1046 ath9k_htc_ps_wakeup(priv);
1047 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1048 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1049
1050 switch (vif->type) {
1051 case NL80211_IFTYPE_STATION:
1052 hvif.opmode = HTC_M_STA;
1053 break;
1054 case NL80211_IFTYPE_ADHOC:
1055 hvif.opmode = HTC_M_IBSS;
1056 break;
1057 case NL80211_IFTYPE_AP:
1058 hvif.opmode = HTC_M_HOSTAP;
1059 break;
1060 case NL80211_IFTYPE_MESH_POINT:
1061 hvif.opmode = HTC_M_WDS; /* close enough */
1062 break;
1063 default:
1064 ath_err(common,
1065 "Interface type %d not yet supported\n", vif->type);
1066 ret = -EOPNOTSUPP;
1067 goto out;
1068 }
1069
1070 /* Index starts from zero on the target */
1071 avp->index = hvif.index = ffz(priv->vif_slot);
1072 hvif.rtsthreshold = cpu_to_be16(2304);
1073 WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
1074 if (ret)
1075 goto out;
1076
1077 /*
1078 * We need a node in target to tx mgmt frames
1079 * before association.
1080 */
1081 ret = ath9k_htc_add_station(priv, vif, NULL);
1082 if (ret) {
1083 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1084 goto out;
1085 }
1086
1087 ath9k_htc_set_mac_bssid_mask(priv, vif);
1088
1089 priv->vif_slot |= (1 << avp->index);
1090 priv->nvifs++;
1091
1092 INC_VIF(priv, vif->type);
1093
1094 if ((vif->type == NL80211_IFTYPE_AP) ||
1095 (vif->type == NL80211_IFTYPE_MESH_POINT) ||
1096 (vif->type == NL80211_IFTYPE_ADHOC))
1097 ath9k_htc_assign_bslot(priv, vif);
1098
1099 ath9k_htc_set_opmode(priv);
1100
1101 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1102 !test_bit(ATH_OP_ANI_RUN, &common->op_flags)) {
1103 ath9k_hw_set_tsfadjust(priv->ah, true);
1104 ath9k_htc_start_ani(priv);
1105 }
1106
1107 ath_dbg(common, CONFIG, "Attach a VIF of type: %d at idx: %d\n",
1108 vif->type, avp->index);
1109
1110 out:
1111 ath9k_htc_ps_restore(priv);
1112 mutex_unlock(&priv->mutex);
1113
1114 return ret;
1115 }
1116
ath9k_htc_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1117 static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
1118 struct ieee80211_vif *vif)
1119 {
1120 struct ath9k_htc_priv *priv = hw->priv;
1121 struct ath_common *common = ath9k_hw_common(priv->ah);
1122 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1123 struct ath9k_htc_target_vif hvif;
1124 int ret = 0;
1125 u8 cmd_rsp;
1126
1127 mutex_lock(&priv->mutex);
1128 ath9k_htc_ps_wakeup(priv);
1129
1130 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1131 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1132 hvif.index = avp->index;
1133 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1134 if (ret) {
1135 ath_err(common, "Unable to remove interface at idx: %d\n",
1136 avp->index);
1137 }
1138 priv->nvifs--;
1139 priv->vif_slot &= ~(1 << avp->index);
1140
1141 if (priv->csa_vif == vif)
1142 priv->csa_vif = NULL;
1143
1144 ath9k_htc_remove_station(priv, vif, NULL);
1145
1146 DEC_VIF(priv, vif->type);
1147
1148 if ((vif->type == NL80211_IFTYPE_AP) ||
1149 vif->type == NL80211_IFTYPE_MESH_POINT ||
1150 (vif->type == NL80211_IFTYPE_ADHOC))
1151 ath9k_htc_remove_bslot(priv, vif);
1152
1153 ath9k_htc_set_opmode(priv);
1154
1155 ath9k_htc_set_mac_bssid_mask(priv, vif);
1156
1157 /*
1158 * Stop ANI only if there are no associated station interfaces.
1159 */
1160 if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) {
1161 priv->rearm_ani = false;
1162 ieee80211_iterate_active_interfaces_atomic(
1163 priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1164 ath9k_htc_vif_iter, priv);
1165 if (!priv->rearm_ani)
1166 ath9k_htc_stop_ani(priv);
1167 }
1168
1169 ath_dbg(common, CONFIG, "Detach Interface at idx: %d\n", avp->index);
1170
1171 ath9k_htc_ps_restore(priv);
1172 mutex_unlock(&priv->mutex);
1173 }
1174
ath9k_htc_config(struct ieee80211_hw * hw,u32 changed)1175 static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
1176 {
1177 struct ath9k_htc_priv *priv = hw->priv;
1178 struct ath_common *common = ath9k_hw_common(priv->ah);
1179 struct ieee80211_conf *conf = &hw->conf;
1180 bool chip_reset = false;
1181 int ret = 0;
1182
1183 mutex_lock(&priv->mutex);
1184 ath9k_htc_ps_wakeup(priv);
1185
1186 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1187 mutex_lock(&priv->htc_pm_lock);
1188
1189 priv->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1190 if (!priv->ps_idle)
1191 chip_reset = true;
1192
1193 mutex_unlock(&priv->htc_pm_lock);
1194 }
1195
1196 /*
1197 * Monitor interface should be added before
1198 * IEEE80211_CONF_CHANGE_CHANNEL is handled.
1199 */
1200 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1201 if ((conf->flags & IEEE80211_CONF_MONITOR) &&
1202 !priv->ah->is_monitoring)
1203 ath9k_htc_add_monitor_interface(priv);
1204 else if (priv->ah->is_monitoring)
1205 ath9k_htc_remove_monitor_interface(priv);
1206 }
1207
1208 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || chip_reset) {
1209 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
1210 int pos = curchan->hw_value;
1211
1212 ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
1213 curchan->center_freq);
1214
1215 ath9k_cmn_get_channel(hw, priv->ah, &hw->conf.chandef);
1216 if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
1217 ath_err(common, "Unable to set channel\n");
1218 ret = -EINVAL;
1219 goto out;
1220 }
1221
1222 }
1223
1224 if (changed & IEEE80211_CONF_CHANGE_PS) {
1225 if (conf->flags & IEEE80211_CONF_PS) {
1226 ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
1227 priv->ps_enabled = true;
1228 } else {
1229 priv->ps_enabled = false;
1230 cancel_work_sync(&priv->ps_work);
1231 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1232 }
1233 }
1234
1235 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1236 priv->txpowlimit = 2 * conf->power_level;
1237 ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
1238 priv->txpowlimit, &priv->curtxpow);
1239 }
1240
1241 out:
1242 ath9k_htc_ps_restore(priv);
1243 mutex_unlock(&priv->mutex);
1244 return ret;
1245 }
1246
1247 #define SUPPORTED_FILTERS \
1248 (FIF_ALLMULTI | \
1249 FIF_CONTROL | \
1250 FIF_PSPOLL | \
1251 FIF_OTHER_BSS | \
1252 FIF_BCN_PRBRESP_PROMISC | \
1253 FIF_PROBE_REQ | \
1254 FIF_MCAST_ACTION | \
1255 FIF_FCSFAIL)
1256
ath9k_htc_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1257 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1258 unsigned int changed_flags,
1259 unsigned int *total_flags,
1260 u64 multicast)
1261 {
1262 struct ath9k_htc_priv *priv = hw->priv;
1263 struct ath_common *common = ath9k_hw_common(priv->ah);
1264 u32 rfilt;
1265
1266 mutex_lock(&priv->mutex);
1267 *total_flags &= SUPPORTED_FILTERS;
1268
1269 if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
1270 ath_dbg(ath9k_hw_common(priv->ah), ANY,
1271 "Unable to configure filter on invalid state\n");
1272 mutex_unlock(&priv->mutex);
1273 return;
1274 }
1275 ath9k_htc_ps_wakeup(priv);
1276
1277 priv->rxfilter = *total_flags;
1278 rfilt = ath9k_htc_calcrxfilter(priv);
1279 ath9k_hw_setrxfilter(priv->ah, rfilt);
1280
1281 ath_dbg(ath9k_hw_common(priv->ah), CONFIG, "Set HW RX filter: 0x%x\n",
1282 rfilt);
1283
1284 ath9k_htc_ps_restore(priv);
1285 mutex_unlock(&priv->mutex);
1286 }
1287
ath9k_htc_sta_rc_update_work(struct work_struct * work)1288 static void ath9k_htc_sta_rc_update_work(struct work_struct *work)
1289 {
1290 struct ath9k_htc_sta *ista =
1291 container_of(work, struct ath9k_htc_sta, rc_update_work);
1292 struct ieee80211_sta *sta =
1293 container_of((void *)ista, struct ieee80211_sta, drv_priv);
1294 struct ath9k_htc_priv *priv = ista->htc_priv;
1295 struct ath_common *common = ath9k_hw_common(priv->ah);
1296 struct ath9k_htc_target_rate trate;
1297
1298 mutex_lock(&priv->mutex);
1299 ath9k_htc_ps_wakeup(priv);
1300
1301 memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
1302 ath9k_htc_setup_rate(priv, sta, &trate);
1303 if (!ath9k_htc_send_rate_cmd(priv, &trate))
1304 ath_dbg(common, CONFIG,
1305 "Supported rates for sta: %pM updated, rate caps: 0x%X\n",
1306 sta->addr, be32_to_cpu(trate.capflags));
1307 else
1308 ath_dbg(common, CONFIG,
1309 "Unable to update supported rates for sta: %pM\n",
1310 sta->addr);
1311
1312 ath9k_htc_ps_restore(priv);
1313 mutex_unlock(&priv->mutex);
1314 }
1315
ath9k_htc_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1316 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1317 struct ieee80211_vif *vif,
1318 struct ieee80211_sta *sta)
1319 {
1320 struct ath9k_htc_priv *priv = hw->priv;
1321 struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
1322 int ret;
1323
1324 mutex_lock(&priv->mutex);
1325 ath9k_htc_ps_wakeup(priv);
1326 ret = ath9k_htc_add_station(priv, vif, sta);
1327 if (!ret) {
1328 INIT_WORK(&ista->rc_update_work, ath9k_htc_sta_rc_update_work);
1329 ista->htc_priv = priv;
1330 ath9k_htc_init_rate(priv, sta);
1331 }
1332 ath9k_htc_ps_restore(priv);
1333 mutex_unlock(&priv->mutex);
1334
1335 return ret;
1336 }
1337
ath9k_htc_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1338 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1339 struct ieee80211_vif *vif,
1340 struct ieee80211_sta *sta)
1341 {
1342 struct ath9k_htc_priv *priv = hw->priv;
1343 struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
1344 int ret;
1345
1346 cancel_work_sync(&ista->rc_update_work);
1347
1348 mutex_lock(&priv->mutex);
1349 ath9k_htc_ps_wakeup(priv);
1350 htc_sta_drain(priv->htc, ista->index);
1351 ret = ath9k_htc_remove_station(priv, vif, sta);
1352 ath9k_htc_ps_restore(priv);
1353 mutex_unlock(&priv->mutex);
1354
1355 return ret;
1356 }
1357
ath9k_htc_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)1358 static void ath9k_htc_sta_rc_update(struct ieee80211_hw *hw,
1359 struct ieee80211_vif *vif,
1360 struct ieee80211_sta *sta, u32 changed)
1361 {
1362 struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
1363
1364 if (!(changed & IEEE80211_RC_SUPP_RATES_CHANGED))
1365 return;
1366
1367 schedule_work(&ista->rc_update_work);
1368 }
1369
ath9k_htc_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 queue,const struct ieee80211_tx_queue_params * params)1370 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw,
1371 struct ieee80211_vif *vif,
1372 unsigned int link_id, u16 queue,
1373 const struct ieee80211_tx_queue_params *params)
1374 {
1375 struct ath9k_htc_priv *priv = hw->priv;
1376 struct ath_common *common = ath9k_hw_common(priv->ah);
1377 struct ath9k_tx_queue_info qi;
1378 int ret = 0, qnum;
1379
1380 if (queue >= IEEE80211_NUM_ACS)
1381 return 0;
1382
1383 mutex_lock(&priv->mutex);
1384 ath9k_htc_ps_wakeup(priv);
1385
1386 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1387
1388 qi.tqi_aifs = params->aifs;
1389 qi.tqi_cwmin = params->cw_min;
1390 qi.tqi_cwmax = params->cw_max;
1391 qi.tqi_burstTime = params->txop * 32;
1392
1393 qnum = get_hw_qnum(queue, priv->hwq_map);
1394
1395 ath_dbg(common, CONFIG,
1396 "Configure tx [queue/hwq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1397 queue, qnum, params->aifs, params->cw_min,
1398 params->cw_max, params->txop);
1399
1400 ret = ath_htc_txq_update(priv, qnum, &qi);
1401 if (ret) {
1402 ath_err(common, "TXQ Update failed\n");
1403 goto out;
1404 }
1405
1406 if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1407 (qnum == priv->hwq_map[IEEE80211_AC_BE]))
1408 ath9k_htc_beaconq_config(priv);
1409 out:
1410 ath9k_htc_ps_restore(priv);
1411 mutex_unlock(&priv->mutex);
1412
1413 return ret;
1414 }
1415
ath9k_htc_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)1416 static int ath9k_htc_set_key(struct ieee80211_hw *hw,
1417 enum set_key_cmd cmd,
1418 struct ieee80211_vif *vif,
1419 struct ieee80211_sta *sta,
1420 struct ieee80211_key_conf *key)
1421 {
1422 struct ath9k_htc_priv *priv = hw->priv;
1423 struct ath_common *common = ath9k_hw_common(priv->ah);
1424 int ret = 0;
1425
1426 if (htc_modparam_nohwcrypt)
1427 return -ENOSPC;
1428
1429 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1430 vif->type == NL80211_IFTYPE_MESH_POINT) &&
1431 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1432 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1433 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1434 /*
1435 * For now, disable hw crypto for the RSN IBSS group keys. This
1436 * could be optimized in the future to use a modified key cache
1437 * design to support per-STA RX GTK, but until that gets
1438 * implemented, use of software crypto for group addressed
1439 * frames is a acceptable to allow RSN IBSS to be used.
1440 */
1441 return -EOPNOTSUPP;
1442 }
1443
1444 mutex_lock(&priv->mutex);
1445 ath_dbg(common, CONFIG, "Set HW Key\n");
1446 ath9k_htc_ps_wakeup(priv);
1447
1448 switch (cmd) {
1449 case SET_KEY:
1450 ret = ath_key_config(common, vif, sta, key);
1451 if (ret >= 0) {
1452 key->hw_key_idx = ret;
1453 /* push IV and Michael MIC generation to stack */
1454 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1455 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1456 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1457 if (priv->ah->sw_mgmt_crypto_tx &&
1458 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1459 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
1460 ret = 0;
1461 }
1462 break;
1463 case DISABLE_KEY:
1464 ath_key_delete(common, key->hw_key_idx);
1465 break;
1466 default:
1467 ret = -EINVAL;
1468 }
1469
1470 ath9k_htc_ps_restore(priv);
1471 mutex_unlock(&priv->mutex);
1472
1473 return ret;
1474 }
1475
ath9k_htc_set_bssid(struct ath9k_htc_priv * priv)1476 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1477 {
1478 struct ath_common *common = ath9k_hw_common(priv->ah);
1479
1480 ath9k_hw_write_associd(priv->ah);
1481 ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n",
1482 common->curbssid, common->curaid);
1483 }
1484
ath9k_htc_bss_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1485 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1486 {
1487 struct ath9k_htc_priv *priv = data;
1488 struct ath_common *common = ath9k_hw_common(priv->ah);
1489 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1490
1491 if ((vif->type == NL80211_IFTYPE_STATION) && vif->cfg.assoc) {
1492 common->curaid = vif->cfg.aid;
1493 common->last_rssi = ATH_RSSI_DUMMY_MARKER;
1494 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1495 set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);
1496 }
1497 }
1498
ath9k_htc_choose_set_bssid(struct ath9k_htc_priv * priv)1499 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1500 {
1501 if (priv->num_sta_assoc_vif == 1) {
1502 ieee80211_iterate_active_interfaces_atomic(
1503 priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1504 ath9k_htc_bss_iter, priv);
1505 ath9k_htc_set_bssid(priv);
1506 }
1507 }
1508
ath9k_htc_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changed)1509 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1510 struct ieee80211_vif *vif,
1511 struct ieee80211_bss_conf *bss_conf,
1512 u64 changed)
1513 {
1514 struct ath9k_htc_priv *priv = hw->priv;
1515 struct ath_hw *ah = priv->ah;
1516 struct ath_common *common = ath9k_hw_common(ah);
1517 int slottime;
1518
1519 mutex_lock(&priv->mutex);
1520 ath9k_htc_ps_wakeup(priv);
1521
1522 if (changed & BSS_CHANGED_ASSOC) {
1523 ath_dbg(common, CONFIG, "BSS Changed ASSOC %d\n",
1524 vif->cfg.assoc);
1525
1526 vif->cfg.assoc ?
1527 priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1528
1529 if (!vif->cfg.assoc)
1530 clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);
1531
1532 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1533 ath9k_htc_choose_set_bssid(priv);
1534 if (vif->cfg.assoc && (priv->num_sta_assoc_vif == 1))
1535 ath9k_htc_start_ani(priv);
1536 else if (priv->num_sta_assoc_vif == 0)
1537 ath9k_htc_stop_ani(priv);
1538 }
1539 }
1540
1541 if (changed & BSS_CHANGED_IBSS) {
1542 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1543 common->curaid = vif->cfg.aid;
1544 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1545 ath9k_htc_set_bssid(priv);
1546 }
1547 }
1548
1549 if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1550 ath_dbg(common, CONFIG, "Beacon enabled for BSS: %pM\n",
1551 bss_conf->bssid);
1552 ath9k_htc_set_tsfadjust(priv, vif);
1553 priv->cur_beacon_conf.enable_beacon = 1;
1554 ath9k_htc_beacon_config(priv, vif);
1555 }
1556
1557 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1558 /*
1559 * Disable SWBA interrupt only if there are no
1560 * concurrent AP/mesh or IBSS interfaces.
1561 */
1562 if ((priv->num_ap_vif + priv->num_mbss_vif <= 1) ||
1563 priv->num_ibss_vif) {
1564 ath_dbg(common, CONFIG,
1565 "Beacon disabled for BSS: %pM\n",
1566 bss_conf->bssid);
1567 priv->cur_beacon_conf.enable_beacon = 0;
1568 ath9k_htc_beacon_config(priv, vif);
1569 }
1570 }
1571
1572 if (changed & BSS_CHANGED_BEACON_INT) {
1573 /*
1574 * Reset the HW TSF for the first AP or mesh interface.
1575 */
1576 if (priv->nvifs == 1 &&
1577 ((priv->ah->opmode == NL80211_IFTYPE_AP &&
1578 vif->type == NL80211_IFTYPE_AP &&
1579 priv->num_ap_vif == 1) ||
1580 (priv->ah->opmode == NL80211_IFTYPE_MESH_POINT &&
1581 vif->type == NL80211_IFTYPE_MESH_POINT &&
1582 priv->num_mbss_vif == 1))) {
1583 set_bit(OP_TSF_RESET, &priv->op_flags);
1584 }
1585 ath_dbg(common, CONFIG,
1586 "Beacon interval changed for BSS: %pM\n",
1587 bss_conf->bssid);
1588 ath9k_htc_beacon_config(priv, vif);
1589 }
1590
1591 if (changed & BSS_CHANGED_ERP_SLOT) {
1592 if (bss_conf->use_short_slot)
1593 slottime = 9;
1594 else
1595 slottime = 20;
1596 if (vif->type == NL80211_IFTYPE_AP) {
1597 /*
1598 * Defer update, so that connected stations can adjust
1599 * their settings at the same time.
1600 * See beacon.c for more details
1601 */
1602 priv->beacon.slottime = slottime;
1603 priv->beacon.updateslot = UPDATE;
1604 } else {
1605 ah->slottime = slottime;
1606 ath9k_hw_init_global_settings(ah);
1607 }
1608 }
1609
1610 if (changed & BSS_CHANGED_HT)
1611 ath9k_htc_update_rate(priv, vif, bss_conf);
1612
1613 ath9k_htc_ps_restore(priv);
1614 mutex_unlock(&priv->mutex);
1615 }
1616
ath9k_htc_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1617 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw,
1618 struct ieee80211_vif *vif)
1619 {
1620 struct ath9k_htc_priv *priv = hw->priv;
1621 u64 tsf;
1622
1623 mutex_lock(&priv->mutex);
1624 ath9k_htc_ps_wakeup(priv);
1625 tsf = ath9k_hw_gettsf64(priv->ah);
1626 ath9k_htc_ps_restore(priv);
1627 mutex_unlock(&priv->mutex);
1628
1629 return tsf;
1630 }
1631
ath9k_htc_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)1632 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw,
1633 struct ieee80211_vif *vif, u64 tsf)
1634 {
1635 struct ath9k_htc_priv *priv = hw->priv;
1636
1637 mutex_lock(&priv->mutex);
1638 ath9k_htc_ps_wakeup(priv);
1639 ath9k_hw_settsf64(priv->ah, tsf);
1640 ath9k_htc_ps_restore(priv);
1641 mutex_unlock(&priv->mutex);
1642 }
1643
ath9k_htc_reset_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1644 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw,
1645 struct ieee80211_vif *vif)
1646 {
1647 struct ath9k_htc_priv *priv = hw->priv;
1648
1649 mutex_lock(&priv->mutex);
1650 ath9k_htc_ps_wakeup(priv);
1651 ath9k_hw_reset_tsf(priv->ah);
1652 ath9k_htc_ps_restore(priv);
1653 mutex_unlock(&priv->mutex);
1654 }
1655
ath9k_htc_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1656 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1657 struct ieee80211_vif *vif,
1658 struct ieee80211_ampdu_params *params)
1659 {
1660 struct ath9k_htc_priv *priv = hw->priv;
1661 struct ath9k_htc_sta *ista;
1662 int ret = 0;
1663 struct ieee80211_sta *sta = params->sta;
1664 enum ieee80211_ampdu_mlme_action action = params->action;
1665 u16 tid = params->tid;
1666
1667 mutex_lock(&priv->mutex);
1668 ath9k_htc_ps_wakeup(priv);
1669
1670 switch (action) {
1671 case IEEE80211_AMPDU_RX_START:
1672 break;
1673 case IEEE80211_AMPDU_RX_STOP:
1674 break;
1675 case IEEE80211_AMPDU_TX_START:
1676 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1677 if (!ret)
1678 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1679 break;
1680 case IEEE80211_AMPDU_TX_STOP_CONT:
1681 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1682 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1683 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1684 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1685 break;
1686 case IEEE80211_AMPDU_TX_OPERATIONAL:
1687 if (tid >= ATH9K_HTC_MAX_TID) {
1688 ret = -EINVAL;
1689 break;
1690 }
1691 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1692 spin_lock_bh(&priv->tx.tx_lock);
1693 ista->tid_state[tid] = AGGR_OPERATIONAL;
1694 spin_unlock_bh(&priv->tx.tx_lock);
1695 break;
1696 default:
1697 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1698 }
1699
1700 ath9k_htc_ps_restore(priv);
1701 mutex_unlock(&priv->mutex);
1702
1703 return ret;
1704 }
1705
ath9k_htc_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)1706 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw,
1707 struct ieee80211_vif *vif,
1708 const u8 *mac_addr)
1709 {
1710 struct ath9k_htc_priv *priv = hw->priv;
1711 struct ath_common *common = ath9k_hw_common(priv->ah);
1712
1713 mutex_lock(&priv->mutex);
1714 spin_lock_bh(&priv->beacon_lock);
1715 set_bit(ATH_OP_SCANNING, &common->op_flags);
1716 spin_unlock_bh(&priv->beacon_lock);
1717 cancel_work_sync(&priv->ps_work);
1718 ath9k_htc_stop_ani(priv);
1719 mutex_unlock(&priv->mutex);
1720 }
1721
ath9k_htc_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1722 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw,
1723 struct ieee80211_vif *vif)
1724 {
1725 struct ath9k_htc_priv *priv = hw->priv;
1726 struct ath_common *common = ath9k_hw_common(priv->ah);
1727
1728 mutex_lock(&priv->mutex);
1729 spin_lock_bh(&priv->beacon_lock);
1730 clear_bit(ATH_OP_SCANNING, &common->op_flags);
1731 spin_unlock_bh(&priv->beacon_lock);
1732 ath9k_htc_ps_wakeup(priv);
1733 ath9k_htc_vif_reconfig(priv);
1734 ath9k_htc_ps_restore(priv);
1735 mutex_unlock(&priv->mutex);
1736 }
1737
ath9k_htc_set_rts_threshold(struct ieee80211_hw * hw,u32 value)1738 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1739 {
1740 return 0;
1741 }
1742
ath9k_htc_set_coverage_class(struct ieee80211_hw * hw,s16 coverage_class)1743 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1744 s16 coverage_class)
1745 {
1746 struct ath9k_htc_priv *priv = hw->priv;
1747
1748 mutex_lock(&priv->mutex);
1749 ath9k_htc_ps_wakeup(priv);
1750 priv->ah->coverage_class = coverage_class;
1751 ath9k_hw_init_global_settings(priv->ah);
1752 ath9k_htc_ps_restore(priv);
1753 mutex_unlock(&priv->mutex);
1754 }
1755
1756 /*
1757 * Currently, this is used only for selecting the minimum rate
1758 * for management frames, rate selection for data frames remain
1759 * unaffected.
1760 */
ath9k_htc_set_bitrate_mask(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct cfg80211_bitrate_mask * mask)1761 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1762 struct ieee80211_vif *vif,
1763 const struct cfg80211_bitrate_mask *mask)
1764 {
1765 struct ath9k_htc_priv *priv = hw->priv;
1766 struct ath_common *common = ath9k_hw_common(priv->ah);
1767 struct ath9k_htc_target_rate_mask tmask;
1768 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1769 int ret = 0;
1770 u8 cmd_rsp;
1771
1772 memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1773
1774 tmask.vif_index = avp->index;
1775 tmask.band = NL80211_BAND_2GHZ;
1776 tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_2GHZ].legacy);
1777
1778 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1779 if (ret) {
1780 ath_err(common,
1781 "Unable to set 2G rate mask for "
1782 "interface at idx: %d\n", avp->index);
1783 goto out;
1784 }
1785
1786 tmask.band = NL80211_BAND_5GHZ;
1787 tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_5GHZ].legacy);
1788
1789 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1790 if (ret) {
1791 ath_err(common,
1792 "Unable to set 5G rate mask for "
1793 "interface at idx: %d\n", avp->index);
1794 goto out;
1795 }
1796
1797 ath_dbg(common, CONFIG, "Set bitrate masks: 0x%x, 0x%x\n",
1798 mask->control[NL80211_BAND_2GHZ].legacy,
1799 mask->control[NL80211_BAND_5GHZ].legacy);
1800 out:
1801 return ret;
1802 }
1803
1804
ath9k_htc_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)1805 static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
1806 struct ieee80211_low_level_stats *stats)
1807 {
1808 struct ath9k_htc_priv *priv = hw->priv;
1809 struct ath_hw *ah = priv->ah;
1810 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1811
1812 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1813 stats->dot11RTSFailureCount = mib_stats->rts_bad;
1814 stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1815 stats->dot11RTSSuccessCount = mib_stats->rts_good;
1816
1817 return 0;
1818 }
1819
ath9k_htc_get_eeprom_base(struct ath9k_htc_priv * priv)1820 struct base_eep_header *ath9k_htc_get_eeprom_base(struct ath9k_htc_priv *priv)
1821 {
1822 struct base_eep_header *pBase = NULL;
1823 /*
1824 * This can be done since all the 3 EEPROM families have the
1825 * same base header upto a certain point, and we are interested in
1826 * the data only upto that point.
1827 */
1828
1829 if (AR_SREV_9271(priv->ah))
1830 pBase = (struct base_eep_header *)
1831 &priv->ah->eeprom.map4k.baseEepHeader;
1832 else if (priv->ah->hw_version.usbdev == AR9280_USB)
1833 pBase = (struct base_eep_header *)
1834 &priv->ah->eeprom.def.baseEepHeader;
1835 else if (priv->ah->hw_version.usbdev == AR9287_USB)
1836 pBase = (struct base_eep_header *)
1837 &priv->ah->eeprom.map9287.baseEepHeader;
1838 return pBase;
1839 }
1840
1841
ath9k_htc_get_antenna(struct ieee80211_hw * hw,u32 * tx_ant,u32 * rx_ant)1842 static int ath9k_htc_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant,
1843 u32 *rx_ant)
1844 {
1845 struct ath9k_htc_priv *priv = hw->priv;
1846 struct base_eep_header *pBase = ath9k_htc_get_eeprom_base(priv);
1847 if (pBase) {
1848 *tx_ant = pBase->txMask;
1849 *rx_ant = pBase->rxMask;
1850 } else {
1851 *tx_ant = 0;
1852 *rx_ant = 0;
1853 }
1854 return 0;
1855 }
1856
ath9k_htc_channel_switch_beacon(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_chan_def * chandef)1857 static void ath9k_htc_channel_switch_beacon(struct ieee80211_hw *hw,
1858 struct ieee80211_vif *vif,
1859 struct cfg80211_chan_def *chandef)
1860 {
1861 struct ath9k_htc_priv *priv = hw->priv;
1862
1863 /* mac80211 does not support CSA in multi-if cases (yet) */
1864 if (WARN_ON(priv->csa_vif))
1865 return;
1866
1867 priv->csa_vif = vif;
1868 }
1869
1870 struct ieee80211_ops ath9k_htc_ops = {
1871 .tx = ath9k_htc_tx,
1872 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
1873 .start = ath9k_htc_start,
1874 .stop = ath9k_htc_stop,
1875 .add_interface = ath9k_htc_add_interface,
1876 .remove_interface = ath9k_htc_remove_interface,
1877 .config = ath9k_htc_config,
1878 .configure_filter = ath9k_htc_configure_filter,
1879 .sta_add = ath9k_htc_sta_add,
1880 .sta_remove = ath9k_htc_sta_remove,
1881 .conf_tx = ath9k_htc_conf_tx,
1882 .sta_rc_update = ath9k_htc_sta_rc_update,
1883 .bss_info_changed = ath9k_htc_bss_info_changed,
1884 .set_key = ath9k_htc_set_key,
1885 .get_tsf = ath9k_htc_get_tsf,
1886 .set_tsf = ath9k_htc_set_tsf,
1887 .reset_tsf = ath9k_htc_reset_tsf,
1888 .ampdu_action = ath9k_htc_ampdu_action,
1889 .sw_scan_start = ath9k_htc_sw_scan_start,
1890 .sw_scan_complete = ath9k_htc_sw_scan_complete,
1891 .set_rts_threshold = ath9k_htc_set_rts_threshold,
1892 .rfkill_poll = ath9k_htc_rfkill_poll_state,
1893 .set_coverage_class = ath9k_htc_set_coverage_class,
1894 .set_bitrate_mask = ath9k_htc_set_bitrate_mask,
1895 .get_stats = ath9k_htc_get_stats,
1896 .get_antenna = ath9k_htc_get_antenna,
1897 .channel_switch_beacon = ath9k_htc_channel_switch_beacon,
1898
1899 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
1900 .get_et_sset_count = ath9k_htc_get_et_sset_count,
1901 .get_et_stats = ath9k_htc_get_et_stats,
1902 .get_et_strings = ath9k_htc_get_et_strings,
1903 #endif
1904 };
1905