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ARM: 7452/1: delay: allow timer-based delay implementation to be selected
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / ath / ath9k / htc_drv_main.c
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 */
24 static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
25 struct ath9k_channel *ichan)
26 {
27 enum htc_phymode mode;
28
29 mode = -EINVAL;
30
31 switch (ichan->chanmode) {
32 case CHANNEL_G:
33 case CHANNEL_G_HT20:
34 case CHANNEL_G_HT40PLUS:
35 case CHANNEL_G_HT40MINUS:
36 mode = HTC_MODE_11NG;
37 break;
38 case CHANNEL_A:
39 case CHANNEL_A_HT20:
40 case CHANNEL_A_HT40PLUS:
41 case CHANNEL_A_HT40MINUS:
42 mode = HTC_MODE_11NA;
43 break;
44 default:
45 break;
46 }
47
48 WARN_ON(mode < 0);
49
50 return mode;
51 }
52
53 bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
54 enum ath9k_power_mode mode)
55 {
56 bool ret;
57
58 mutex_lock(&priv->htc_pm_lock);
59 ret = ath9k_hw_setpower(priv->ah, mode);
60 mutex_unlock(&priv->htc_pm_lock);
61
62 return ret;
63 }
64
65 void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
66 {
67 mutex_lock(&priv->htc_pm_lock);
68 if (++priv->ps_usecount != 1)
69 goto unlock;
70 ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
71
72 unlock:
73 mutex_unlock(&priv->htc_pm_lock);
74 }
75
76 void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
77 {
78 mutex_lock(&priv->htc_pm_lock);
79 if (--priv->ps_usecount != 0)
80 goto unlock;
81
82 if (priv->ps_idle)
83 ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
84 else if (priv->ps_enabled)
85 ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
86
87 unlock:
88 mutex_unlock(&priv->htc_pm_lock);
89 }
90
91 void ath9k_ps_work(struct work_struct *work)
92 {
93 struct ath9k_htc_priv *priv =
94 container_of(work, struct ath9k_htc_priv,
95 ps_work);
96 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
97
98 /* The chip wakes up after receiving the first beacon
99 while network sleep is enabled. For the driver to
100 be in sync with the hw, set the chip to awake and
101 only then set it to sleep.
102 */
103 ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
104 }
105
106 static void ath9k_htc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
107 {
108 struct ath9k_htc_priv *priv = data;
109 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
110
111 if ((vif->type == NL80211_IFTYPE_AP) && bss_conf->enable_beacon)
112 priv->reconfig_beacon = true;
113
114 if (bss_conf->assoc) {
115 priv->rearm_ani = true;
116 priv->reconfig_beacon = true;
117 }
118 }
119
120 static void ath9k_htc_vif_reconfig(struct ath9k_htc_priv *priv)
121 {
122 priv->rearm_ani = false;
123 priv->reconfig_beacon = false;
124
125 ieee80211_iterate_active_interfaces_atomic(priv->hw,
126 ath9k_htc_vif_iter, priv);
127 if (priv->rearm_ani)
128 ath9k_htc_start_ani(priv);
129
130 if (priv->reconfig_beacon) {
131 ath9k_htc_ps_wakeup(priv);
132 ath9k_htc_beacon_reconfig(priv);
133 ath9k_htc_ps_restore(priv);
134 }
135 }
136
137 static void ath9k_htc_bssid_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
138 {
139 struct ath9k_vif_iter_data *iter_data = data;
140 int i;
141
142 for (i = 0; i < ETH_ALEN; i++)
143 iter_data->mask[i] &= ~(iter_data->hw_macaddr[i] ^ mac[i]);
144 }
145
146 static void ath9k_htc_set_bssid_mask(struct ath9k_htc_priv *priv,
147 struct ieee80211_vif *vif)
148 {
149 struct ath_common *common = ath9k_hw_common(priv->ah);
150 struct ath9k_vif_iter_data iter_data;
151
152 /*
153 * Use the hardware MAC address as reference, the hardware uses it
154 * together with the BSSID mask when matching addresses.
155 */
156 iter_data.hw_macaddr = common->macaddr;
157 memset(&iter_data.mask, 0xff, ETH_ALEN);
158
159 if (vif)
160 ath9k_htc_bssid_iter(&iter_data, vif->addr, vif);
161
162 /* Get list of all active MAC addresses */
163 ieee80211_iterate_active_interfaces_atomic(priv->hw, ath9k_htc_bssid_iter,
164 &iter_data);
165
166 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
167 ath_hw_setbssidmask(common);
168 }
169
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
177 priv->ah->opmode = NL80211_IFTYPE_STATION;
178
179 ath9k_hw_setopmode(priv->ah);
180 }
181
182 void ath9k_htc_reset(struct ath9k_htc_priv *priv)
183 {
184 struct ath_hw *ah = priv->ah;
185 struct ath_common *common = ath9k_hw_common(ah);
186 struct ieee80211_channel *channel = priv->hw->conf.channel;
187 struct ath9k_hw_cal_data *caldata = NULL;
188 enum htc_phymode mode;
189 __be16 htc_mode;
190 u8 cmd_rsp;
191 int ret;
192
193 mutex_lock(&priv->mutex);
194 ath9k_htc_ps_wakeup(priv);
195
196 ath9k_htc_stop_ani(priv);
197 ieee80211_stop_queues(priv->hw);
198
199 del_timer_sync(&priv->tx.cleanup_timer);
200 ath9k_htc_tx_drain(priv);
201
202 WMI_CMD(WMI_DISABLE_INTR_CMDID);
203 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
204 WMI_CMD(WMI_STOP_RECV_CMDID);
205
206 ath9k_wmi_event_drain(priv);
207
208 caldata = &priv->caldata;
209 ret = ath9k_hw_reset(ah, ah->curchan, caldata, false);
210 if (ret) {
211 ath_err(common,
212 "Unable to reset device (%u Mhz) reset status %d\n",
213 channel->center_freq, ret);
214 }
215
216 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
217 &priv->curtxpow);
218
219 WMI_CMD(WMI_START_RECV_CMDID);
220 ath9k_host_rx_init(priv);
221
222 mode = ath9k_htc_get_curmode(priv, ah->curchan);
223 htc_mode = cpu_to_be16(mode);
224 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
225
226 WMI_CMD(WMI_ENABLE_INTR_CMDID);
227 htc_start(priv->htc);
228 ath9k_htc_vif_reconfig(priv);
229 ieee80211_wake_queues(priv->hw);
230
231 mod_timer(&priv->tx.cleanup_timer,
232 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
233
234 ath9k_htc_ps_restore(priv);
235 mutex_unlock(&priv->mutex);
236 }
237
238 static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
239 struct ieee80211_hw *hw,
240 struct ath9k_channel *hchan)
241 {
242 struct ath_hw *ah = priv->ah;
243 struct ath_common *common = ath9k_hw_common(ah);
244 struct ieee80211_conf *conf = &common->hw->conf;
245 bool fastcc;
246 struct ieee80211_channel *channel = hw->conf.channel;
247 struct ath9k_hw_cal_data *caldata = NULL;
248 enum htc_phymode mode;
249 __be16 htc_mode;
250 u8 cmd_rsp;
251 int ret;
252
253 if (priv->op_flags & OP_INVALID)
254 return -EIO;
255
256 fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
257
258 ath9k_htc_ps_wakeup(priv);
259
260 del_timer_sync(&priv->tx.cleanup_timer);
261 ath9k_htc_tx_drain(priv);
262
263 WMI_CMD(WMI_DISABLE_INTR_CMDID);
264 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
265 WMI_CMD(WMI_STOP_RECV_CMDID);
266
267 ath9k_wmi_event_drain(priv);
268
269 ath_dbg(common, CONFIG,
270 "(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n",
271 priv->ah->curchan->channel,
272 channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
273 fastcc);
274
275 if (!fastcc)
276 caldata = &priv->caldata;
277
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 (!(priv->op_flags & OP_SCANNING) &&
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 err:
315 ath9k_htc_ps_restore(priv);
316 return ret;
317 }
318
319 /*
320 * Monitor mode handling is a tad complicated because the firmware requires
321 * an interface to be created exclusively, while mac80211 doesn't associate
322 * an interface with the mode.
323 *
324 * So, for now, only one monitor interface can be configured.
325 */
326 static void __ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
327 {
328 struct ath_common *common = ath9k_hw_common(priv->ah);
329 struct ath9k_htc_target_vif hvif;
330 int ret = 0;
331 u8 cmd_rsp;
332
333 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
334 memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
335 hvif.index = priv->mon_vif_idx;
336 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
337 if (ret) {
338 ath_err(common, "Unable to remove monitor interface at idx: %d\n",
339 priv->mon_vif_idx);
340 }
341
342 priv->nvifs--;
343 priv->vif_slot &= ~(1 << priv->mon_vif_idx);
344 }
345
346 static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
347 {
348 struct ath_common *common = ath9k_hw_common(priv->ah);
349 struct ath9k_htc_target_vif hvif;
350 struct ath9k_htc_target_sta tsta;
351 int ret = 0, sta_idx;
352 u8 cmd_rsp;
353
354 if ((priv->nvifs >= ATH9K_HTC_MAX_VIF) ||
355 (priv->nstations >= ATH9K_HTC_MAX_STA)) {
356 ret = -ENOBUFS;
357 goto err_vif;
358 }
359
360 sta_idx = ffz(priv->sta_slot);
361 if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA)) {
362 ret = -ENOBUFS;
363 goto err_vif;
364 }
365
366 /*
367 * Add an interface.
368 */
369 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
370 memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
371
372 hvif.opmode = HTC_M_MONITOR;
373 hvif.index = ffz(priv->vif_slot);
374
375 WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
376 if (ret)
377 goto err_vif;
378
379 /*
380 * Assign the monitor interface index as a special case here.
381 * This is needed when the interface is brought down.
382 */
383 priv->mon_vif_idx = hvif.index;
384 priv->vif_slot |= (1 << hvif.index);
385
386 /*
387 * Set the hardware mode to monitor only if there are no
388 * other interfaces.
389 */
390 if (!priv->nvifs)
391 priv->ah->opmode = NL80211_IFTYPE_MONITOR;
392
393 priv->nvifs++;
394
395 /*
396 * Associate a station with the interface for packet injection.
397 */
398 memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
399
400 memcpy(&tsta.macaddr, common->macaddr, ETH_ALEN);
401
402 tsta.is_vif_sta = 1;
403 tsta.sta_index = sta_idx;
404 tsta.vif_index = hvif.index;
405 tsta.maxampdu = cpu_to_be16(0xffff);
406
407 WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
408 if (ret) {
409 ath_err(common, "Unable to add station entry for monitor mode\n");
410 goto err_sta;
411 }
412
413 priv->sta_slot |= (1 << sta_idx);
414 priv->nstations++;
415 priv->vif_sta_pos[priv->mon_vif_idx] = sta_idx;
416 priv->ah->is_monitoring = true;
417
418 ath_dbg(common, CONFIG,
419 "Attached a monitor interface at idx: %d, sta idx: %d\n",
420 priv->mon_vif_idx, sta_idx);
421
422 return 0;
423
424 err_sta:
425 /*
426 * Remove the interface from the target.
427 */
428 __ath9k_htc_remove_monitor_interface(priv);
429 err_vif:
430 ath_dbg(common, FATAL, "Unable to attach a monitor interface\n");
431
432 return ret;
433 }
434
435 static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
436 {
437 struct ath_common *common = ath9k_hw_common(priv->ah);
438 int ret = 0;
439 u8 cmd_rsp, sta_idx;
440
441 __ath9k_htc_remove_monitor_interface(priv);
442
443 sta_idx = priv->vif_sta_pos[priv->mon_vif_idx];
444
445 WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
446 if (ret) {
447 ath_err(common, "Unable to remove station entry for monitor mode\n");
448 return ret;
449 }
450
451 priv->sta_slot &= ~(1 << sta_idx);
452 priv->nstations--;
453 priv->ah->is_monitoring = false;
454
455 ath_dbg(common, CONFIG,
456 "Removed a monitor interface at idx: %d, sta idx: %d\n",
457 priv->mon_vif_idx, sta_idx);
458
459 return 0;
460 }
461
462 static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
463 struct ieee80211_vif *vif,
464 struct ieee80211_sta *sta)
465 {
466 struct ath_common *common = ath9k_hw_common(priv->ah);
467 struct ath9k_htc_target_sta tsta;
468 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
469 struct ath9k_htc_sta *ista;
470 int ret, sta_idx;
471 u8 cmd_rsp;
472 u16 maxampdu;
473
474 if (priv->nstations >= ATH9K_HTC_MAX_STA)
475 return -ENOBUFS;
476
477 sta_idx = ffz(priv->sta_slot);
478 if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA))
479 return -ENOBUFS;
480
481 memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
482
483 if (sta) {
484 ista = (struct ath9k_htc_sta *) sta->drv_priv;
485 memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
486 memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
487 tsta.is_vif_sta = 0;
488 ista->index = sta_idx;
489 } else {
490 memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
491 tsta.is_vif_sta = 1;
492 }
493
494 tsta.sta_index = sta_idx;
495 tsta.vif_index = avp->index;
496
497 if (!sta) {
498 tsta.maxampdu = cpu_to_be16(0xffff);
499 } else {
500 maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
501 sta->ht_cap.ampdu_factor);
502 tsta.maxampdu = cpu_to_be16(maxampdu);
503 }
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
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
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
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.channel->band];
603
604 for (i = 0, j = 0; i < sband->n_bitrates; i++) {
605 if (sta->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->ht_cap.ht_supported) {
614 for (i = 0, j = 0; i < 77; i++) {
615 if (sta->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->ht_cap.mcs.rx_mask[1])
624 caps |= WLAN_RC_DS_FLAG;
625 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
626 (conf_is_ht40(&priv->hw->conf)))
627 caps |= WLAN_RC_40_FLAG;
628 if (conf_is_ht40(&priv->hw->conf) &&
629 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
630 caps |= WLAN_RC_SGI_FLAG;
631 else if (conf_is_ht20(&priv->hw->conf) &&
632 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20))
633 caps |= WLAN_RC_SGI_FLAG;
634 }
635
636 trate->sta_index = ista->index;
637 trate->isnew = 1;
638 trate->capflags = cpu_to_be32(caps);
639 }
640
641 static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv,
642 struct ath9k_htc_target_rate *trate)
643 {
644 struct ath_common *common = ath9k_hw_common(priv->ah);
645 int ret;
646 u8 cmd_rsp;
647
648 WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate);
649 if (ret) {
650 ath_err(common,
651 "Unable to initialize Rate information on target\n");
652 }
653
654 return ret;
655 }
656
657 static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
658 struct ieee80211_sta *sta)
659 {
660 struct ath_common *common = ath9k_hw_common(priv->ah);
661 struct ath9k_htc_target_rate trate;
662 int ret;
663
664 memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
665 ath9k_htc_setup_rate(priv, sta, &trate);
666 ret = ath9k_htc_send_rate_cmd(priv, &trate);
667 if (!ret)
668 ath_dbg(common, CONFIG,
669 "Updated target sta: %pM, rate caps: 0x%X\n",
670 sta->addr, be32_to_cpu(trate.capflags));
671 }
672
673 static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
674 struct ieee80211_vif *vif,
675 struct ieee80211_bss_conf *bss_conf)
676 {
677 struct ath_common *common = ath9k_hw_common(priv->ah);
678 struct ath9k_htc_target_rate trate;
679 struct ieee80211_sta *sta;
680 int ret;
681
682 memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
683
684 rcu_read_lock();
685 sta = ieee80211_find_sta(vif, bss_conf->bssid);
686 if (!sta) {
687 rcu_read_unlock();
688 return;
689 }
690 ath9k_htc_setup_rate(priv, sta, &trate);
691 rcu_read_unlock();
692
693 ret = ath9k_htc_send_rate_cmd(priv, &trate);
694 if (!ret)
695 ath_dbg(common, CONFIG,
696 "Updated target sta: %pM, rate caps: 0x%X\n",
697 bss_conf->bssid, be32_to_cpu(trate.capflags));
698 }
699
700 static int ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv *priv,
701 struct ieee80211_vif *vif,
702 struct ieee80211_sta *sta,
703 enum ieee80211_ampdu_mlme_action action,
704 u16 tid)
705 {
706 struct ath_common *common = ath9k_hw_common(priv->ah);
707 struct ath9k_htc_target_aggr aggr;
708 struct ath9k_htc_sta *ista;
709 int ret = 0;
710 u8 cmd_rsp;
711
712 if (tid >= ATH9K_HTC_MAX_TID)
713 return -EINVAL;
714
715 memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));
716 ista = (struct ath9k_htc_sta *) sta->drv_priv;
717
718 aggr.sta_index = ista->index;
719 aggr.tidno = tid & 0xf;
720 aggr.aggr_enable = (action == IEEE80211_AMPDU_TX_START) ? true : false;
721
722 WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
723 if (ret)
724 ath_dbg(common, CONFIG,
725 "Unable to %s TX aggregation for (%pM, %d)\n",
726 (aggr.aggr_enable) ? "start" : "stop", sta->addr, tid);
727 else
728 ath_dbg(common, CONFIG,
729 "%s TX aggregation for (%pM, %d)\n",
730 (aggr.aggr_enable) ? "Starting" : "Stopping",
731 sta->addr, tid);
732
733 spin_lock_bh(&priv->tx.tx_lock);
734 ista->tid_state[tid] = (aggr.aggr_enable && !ret) ? AGGR_START : AGGR_STOP;
735 spin_unlock_bh(&priv->tx.tx_lock);
736
737 return ret;
738 }
739
740 /*******/
741 /* ANI */
742 /*******/
743
744 void ath9k_htc_start_ani(struct ath9k_htc_priv *priv)
745 {
746 struct ath_common *common = ath9k_hw_common(priv->ah);
747 unsigned long timestamp = jiffies_to_msecs(jiffies);
748
749 common->ani.longcal_timer = timestamp;
750 common->ani.shortcal_timer = timestamp;
751 common->ani.checkani_timer = timestamp;
752
753 priv->op_flags |= OP_ANI_RUNNING;
754
755 ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
756 msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
757 }
758
759 void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv)
760 {
761 cancel_delayed_work_sync(&priv->ani_work);
762 priv->op_flags &= ~OP_ANI_RUNNING;
763 }
764
765 void ath9k_htc_ani_work(struct work_struct *work)
766 {
767 struct ath9k_htc_priv *priv =
768 container_of(work, struct ath9k_htc_priv, ani_work.work);
769 struct ath_hw *ah = priv->ah;
770 struct ath_common *common = ath9k_hw_common(ah);
771 bool longcal = false;
772 bool shortcal = false;
773 bool aniflag = false;
774 unsigned int timestamp = jiffies_to_msecs(jiffies);
775 u32 cal_interval, short_cal_interval;
776
777 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
778 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
779
780 /* Only calibrate if awake */
781 if (ah->power_mode != ATH9K_PM_AWAKE)
782 goto set_timer;
783
784 /* Long calibration runs independently of short calibration. */
785 if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
786 longcal = true;
787 ath_dbg(common, ANI, "longcal @%lu\n", jiffies);
788 common->ani.longcal_timer = timestamp;
789 }
790
791 /* Short calibration applies only while caldone is false */
792 if (!common->ani.caldone) {
793 if ((timestamp - common->ani.shortcal_timer) >=
794 short_cal_interval) {
795 shortcal = true;
796 ath_dbg(common, ANI, "shortcal @%lu\n", jiffies);
797 common->ani.shortcal_timer = timestamp;
798 common->ani.resetcal_timer = timestamp;
799 }
800 } else {
801 if ((timestamp - common->ani.resetcal_timer) >=
802 ATH_RESTART_CALINTERVAL) {
803 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
804 if (common->ani.caldone)
805 common->ani.resetcal_timer = timestamp;
806 }
807 }
808
809 /* Verify whether we must check ANI */
810 if (ah->config.enable_ani &&
811 (timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
812 aniflag = true;
813 common->ani.checkani_timer = timestamp;
814 }
815
816 /* Skip all processing if there's nothing to do. */
817 if (longcal || shortcal || aniflag) {
818
819 ath9k_htc_ps_wakeup(priv);
820
821 /* Call ANI routine if necessary */
822 if (aniflag)
823 ath9k_hw_ani_monitor(ah, ah->curchan);
824
825 /* Perform calibration if necessary */
826 if (longcal || shortcal)
827 common->ani.caldone =
828 ath9k_hw_calibrate(ah, ah->curchan,
829 ah->rxchainmask, longcal);
830
831 ath9k_htc_ps_restore(priv);
832 }
833
834 set_timer:
835 /*
836 * Set timer interval based on previous results.
837 * The interval must be the shortest necessary to satisfy ANI,
838 * short calibration and long calibration.
839 */
840 cal_interval = ATH_LONG_CALINTERVAL;
841 if (ah->config.enable_ani)
842 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
843 if (!common->ani.caldone)
844 cal_interval = min(cal_interval, (u32)short_cal_interval);
845
846 ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
847 msecs_to_jiffies(cal_interval));
848 }
849
850 /**********************/
851 /* mac80211 Callbacks */
852 /**********************/
853
854 static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
855 {
856 struct ieee80211_hdr *hdr;
857 struct ath9k_htc_priv *priv = hw->priv;
858 struct ath_common *common = ath9k_hw_common(priv->ah);
859 int padpos, padsize, ret, slot;
860
861 hdr = (struct ieee80211_hdr *) skb->data;
862
863 /* Add the padding after the header if this is not already done */
864 padpos = ath9k_cmn_padpos(hdr->frame_control);
865 padsize = padpos & 3;
866 if (padsize && skb->len > padpos) {
867 if (skb_headroom(skb) < padsize) {
868 ath_dbg(common, XMIT, "No room for padding\n");
869 goto fail_tx;
870 }
871 skb_push(skb, padsize);
872 memmove(skb->data, skb->data + padsize, padpos);
873 }
874
875 slot = ath9k_htc_tx_get_slot(priv);
876 if (slot < 0) {
877 ath_dbg(common, XMIT, "No free TX slot\n");
878 goto fail_tx;
879 }
880
881 ret = ath9k_htc_tx_start(priv, skb, slot, false);
882 if (ret != 0) {
883 ath_dbg(common, XMIT, "Tx failed\n");
884 goto clear_slot;
885 }
886
887 ath9k_htc_check_stop_queues(priv);
888
889 return;
890
891 clear_slot:
892 ath9k_htc_tx_clear_slot(priv, slot);
893 fail_tx:
894 dev_kfree_skb_any(skb);
895 }
896
897 static int ath9k_htc_start(struct ieee80211_hw *hw)
898 {
899 struct ath9k_htc_priv *priv = hw->priv;
900 struct ath_hw *ah = priv->ah;
901 struct ath_common *common = ath9k_hw_common(ah);
902 struct ieee80211_channel *curchan = hw->conf.channel;
903 struct ath9k_channel *init_channel;
904 int ret = 0;
905 enum htc_phymode mode;
906 __be16 htc_mode;
907 u8 cmd_rsp;
908
909 mutex_lock(&priv->mutex);
910
911 ath_dbg(common, CONFIG,
912 "Starting driver with initial channel: %d MHz\n",
913 curchan->center_freq);
914
915 /* Ensure that HW is awake before flushing RX */
916 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
917 WMI_CMD(WMI_FLUSH_RECV_CMDID);
918
919 /* setup initial channel */
920 init_channel = ath9k_cmn_get_curchannel(hw, ah);
921
922 ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
923 if (ret) {
924 ath_err(common,
925 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
926 ret, curchan->center_freq);
927 mutex_unlock(&priv->mutex);
928 return ret;
929 }
930
931 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
932 &priv->curtxpow);
933
934 mode = ath9k_htc_get_curmode(priv, init_channel);
935 htc_mode = cpu_to_be16(mode);
936 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
937 WMI_CMD(WMI_ATH_INIT_CMDID);
938 WMI_CMD(WMI_START_RECV_CMDID);
939
940 ath9k_host_rx_init(priv);
941
942 ret = ath9k_htc_update_cap_target(priv, 0);
943 if (ret)
944 ath_dbg(common, CONFIG,
945 "Failed to update capability in target\n");
946
947 priv->op_flags &= ~OP_INVALID;
948 htc_start(priv->htc);
949
950 spin_lock_bh(&priv->tx.tx_lock);
951 priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
952 spin_unlock_bh(&priv->tx.tx_lock);
953
954 ieee80211_wake_queues(hw);
955
956 mod_timer(&priv->tx.cleanup_timer,
957 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
958
959 ath9k_htc_start_btcoex(priv);
960
961 mutex_unlock(&priv->mutex);
962
963 return ret;
964 }
965
966 static void ath9k_htc_stop(struct ieee80211_hw *hw)
967 {
968 struct ath9k_htc_priv *priv = hw->priv;
969 struct ath_hw *ah = priv->ah;
970 struct ath_common *common = ath9k_hw_common(ah);
971 int ret __attribute__ ((unused));
972 u8 cmd_rsp;
973
974 mutex_lock(&priv->mutex);
975
976 if (priv->op_flags & OP_INVALID) {
977 ath_dbg(common, ANY, "Device not present\n");
978 mutex_unlock(&priv->mutex);
979 return;
980 }
981
982 ath9k_htc_ps_wakeup(priv);
983
984 WMI_CMD(WMI_DISABLE_INTR_CMDID);
985 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
986 WMI_CMD(WMI_STOP_RECV_CMDID);
987
988 tasklet_kill(&priv->rx_tasklet);
989
990 del_timer_sync(&priv->tx.cleanup_timer);
991 ath9k_htc_tx_drain(priv);
992 ath9k_wmi_event_drain(priv);
993
994 mutex_unlock(&priv->mutex);
995
996 /* Cancel all the running timers/work .. */
997 cancel_work_sync(&priv->fatal_work);
998 cancel_work_sync(&priv->ps_work);
999
1000 #ifdef CONFIG_MAC80211_LEDS
1001 cancel_work_sync(&priv->led_work);
1002 #endif
1003 ath9k_htc_stop_ani(priv);
1004
1005 mutex_lock(&priv->mutex);
1006
1007 ath9k_htc_stop_btcoex(priv);
1008
1009 /* Remove a monitor interface if it's present. */
1010 if (priv->ah->is_monitoring)
1011 ath9k_htc_remove_monitor_interface(priv);
1012
1013 ath9k_hw_phy_disable(ah);
1014 ath9k_hw_disable(ah);
1015 ath9k_htc_ps_restore(priv);
1016 ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
1017
1018 priv->op_flags |= OP_INVALID;
1019
1020 ath_dbg(common, CONFIG, "Driver halt\n");
1021 mutex_unlock(&priv->mutex);
1022 }
1023
1024 static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
1025 struct ieee80211_vif *vif)
1026 {
1027 struct ath9k_htc_priv *priv = hw->priv;
1028 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1029 struct ath_common *common = ath9k_hw_common(priv->ah);
1030 struct ath9k_htc_target_vif hvif;
1031 int ret = 0;
1032 u8 cmd_rsp;
1033
1034 mutex_lock(&priv->mutex);
1035
1036 if (priv->nvifs >= ATH9K_HTC_MAX_VIF) {
1037 mutex_unlock(&priv->mutex);
1038 return -ENOBUFS;
1039 }
1040
1041 if (priv->num_ibss_vif ||
1042 (priv->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
1043 ath_err(common, "IBSS coexistence with other modes is not allowed\n");
1044 mutex_unlock(&priv->mutex);
1045 return -ENOBUFS;
1046 }
1047
1048 if (((vif->type == NL80211_IFTYPE_AP) ||
1049 (vif->type == NL80211_IFTYPE_ADHOC)) &&
1050 ((priv->num_ap_vif + priv->num_ibss_vif) >= ATH9K_HTC_MAX_BCN_VIF)) {
1051 ath_err(common, "Max. number of beaconing interfaces reached\n");
1052 mutex_unlock(&priv->mutex);
1053 return -ENOBUFS;
1054 }
1055
1056 ath9k_htc_ps_wakeup(priv);
1057 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1058 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1059
1060 switch (vif->type) {
1061 case NL80211_IFTYPE_STATION:
1062 hvif.opmode = HTC_M_STA;
1063 break;
1064 case NL80211_IFTYPE_ADHOC:
1065 hvif.opmode = HTC_M_IBSS;
1066 break;
1067 case NL80211_IFTYPE_AP:
1068 hvif.opmode = HTC_M_HOSTAP;
1069 break;
1070 default:
1071 ath_err(common,
1072 "Interface type %d not yet supported\n", vif->type);
1073 ret = -EOPNOTSUPP;
1074 goto out;
1075 }
1076
1077 /* Index starts from zero on the target */
1078 avp->index = hvif.index = ffz(priv->vif_slot);
1079 hvif.rtsthreshold = cpu_to_be16(2304);
1080 WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
1081 if (ret)
1082 goto out;
1083
1084 /*
1085 * We need a node in target to tx mgmt frames
1086 * before association.
1087 */
1088 ret = ath9k_htc_add_station(priv, vif, NULL);
1089 if (ret) {
1090 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1091 goto out;
1092 }
1093
1094 ath9k_htc_set_bssid_mask(priv, vif);
1095
1096 priv->vif_slot |= (1 << avp->index);
1097 priv->nvifs++;
1098
1099 INC_VIF(priv, vif->type);
1100
1101 if ((vif->type == NL80211_IFTYPE_AP) ||
1102 (vif->type == NL80211_IFTYPE_ADHOC))
1103 ath9k_htc_assign_bslot(priv, vif);
1104
1105 ath9k_htc_set_opmode(priv);
1106
1107 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1108 !(priv->op_flags & OP_ANI_RUNNING)) {
1109 ath9k_hw_set_tsfadjust(priv->ah, 1);
1110 ath9k_htc_start_ani(priv);
1111 }
1112
1113 ath_dbg(common, CONFIG, "Attach a VIF of type: %d at idx: %d\n",
1114 vif->type, avp->index);
1115
1116 out:
1117 ath9k_htc_ps_restore(priv);
1118 mutex_unlock(&priv->mutex);
1119
1120 return ret;
1121 }
1122
1123 static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
1124 struct ieee80211_vif *vif)
1125 {
1126 struct ath9k_htc_priv *priv = hw->priv;
1127 struct ath_common *common = ath9k_hw_common(priv->ah);
1128 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1129 struct ath9k_htc_target_vif hvif;
1130 int ret = 0;
1131 u8 cmd_rsp;
1132
1133 mutex_lock(&priv->mutex);
1134 ath9k_htc_ps_wakeup(priv);
1135
1136 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1137 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1138 hvif.index = avp->index;
1139 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1140 if (ret) {
1141 ath_err(common, "Unable to remove interface at idx: %d\n",
1142 avp->index);
1143 }
1144 priv->nvifs--;
1145 priv->vif_slot &= ~(1 << avp->index);
1146
1147 ath9k_htc_remove_station(priv, vif, NULL);
1148
1149 DEC_VIF(priv, vif->type);
1150
1151 if ((vif->type == NL80211_IFTYPE_AP) ||
1152 (vif->type == NL80211_IFTYPE_ADHOC))
1153 ath9k_htc_remove_bslot(priv, vif);
1154
1155 ath9k_htc_set_opmode(priv);
1156
1157 ath9k_htc_set_bssid_mask(priv, vif);
1158
1159 /*
1160 * Stop ANI only if there are no associated station interfaces.
1161 */
1162 if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) {
1163 priv->rearm_ani = false;
1164 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1165 ath9k_htc_vif_iter, priv);
1166 if (!priv->rearm_ani)
1167 ath9k_htc_stop_ani(priv);
1168 }
1169
1170 ath_dbg(common, CONFIG, "Detach Interface at idx: %d\n", avp->index);
1171
1172 ath9k_htc_ps_restore(priv);
1173 mutex_unlock(&priv->mutex);
1174 }
1175
1176 static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
1177 {
1178 struct ath9k_htc_priv *priv = hw->priv;
1179 struct ath_common *common = ath9k_hw_common(priv->ah);
1180 struct ieee80211_conf *conf = &hw->conf;
1181
1182 mutex_lock(&priv->mutex);
1183
1184 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1185 bool enable_radio = false;
1186 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1187
1188 mutex_lock(&priv->htc_pm_lock);
1189 if (!idle && priv->ps_idle)
1190 enable_radio = true;
1191 priv->ps_idle = idle;
1192 mutex_unlock(&priv->htc_pm_lock);
1193
1194 if (enable_radio) {
1195 ath_dbg(common, CONFIG, "not-idle: enabling radio\n");
1196 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1197 ath9k_htc_radio_enable(hw);
1198 }
1199 }
1200
1201 /*
1202 * Monitor interface should be added before
1203 * IEEE80211_CONF_CHANGE_CHANNEL is handled.
1204 */
1205 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1206 if ((conf->flags & IEEE80211_CONF_MONITOR) &&
1207 !priv->ah->is_monitoring)
1208 ath9k_htc_add_monitor_interface(priv);
1209 else if (priv->ah->is_monitoring)
1210 ath9k_htc_remove_monitor_interface(priv);
1211 }
1212
1213 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1214 struct ieee80211_channel *curchan = hw->conf.channel;
1215 int pos = curchan->hw_value;
1216
1217 ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
1218 curchan->center_freq);
1219
1220 ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
1221 hw->conf.channel,
1222 hw->conf.channel_type);
1223
1224 if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
1225 ath_err(common, "Unable to set channel\n");
1226 mutex_unlock(&priv->mutex);
1227 return -EINVAL;
1228 }
1229
1230 }
1231
1232 if (changed & IEEE80211_CONF_CHANGE_PS) {
1233 if (conf->flags & IEEE80211_CONF_PS) {
1234 ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
1235 priv->ps_enabled = true;
1236 } else {
1237 priv->ps_enabled = false;
1238 cancel_work_sync(&priv->ps_work);
1239 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1240 }
1241 }
1242
1243 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1244 priv->txpowlimit = 2 * conf->power_level;
1245 ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
1246 priv->txpowlimit, &priv->curtxpow);
1247 }
1248
1249 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1250 mutex_lock(&priv->htc_pm_lock);
1251 if (!priv->ps_idle) {
1252 mutex_unlock(&priv->htc_pm_lock);
1253 goto out;
1254 }
1255 mutex_unlock(&priv->htc_pm_lock);
1256
1257 ath_dbg(common, CONFIG, "idle: disabling radio\n");
1258 ath9k_htc_radio_disable(hw);
1259 }
1260
1261 out:
1262 mutex_unlock(&priv->mutex);
1263 return 0;
1264 }
1265
1266 #define SUPPORTED_FILTERS \
1267 (FIF_PROMISC_IN_BSS | \
1268 FIF_ALLMULTI | \
1269 FIF_CONTROL | \
1270 FIF_PSPOLL | \
1271 FIF_OTHER_BSS | \
1272 FIF_BCN_PRBRESP_PROMISC | \
1273 FIF_PROBE_REQ | \
1274 FIF_FCSFAIL)
1275
1276 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1277 unsigned int changed_flags,
1278 unsigned int *total_flags,
1279 u64 multicast)
1280 {
1281 struct ath9k_htc_priv *priv = hw->priv;
1282 u32 rfilt;
1283
1284 mutex_lock(&priv->mutex);
1285 changed_flags &= SUPPORTED_FILTERS;
1286 *total_flags &= SUPPORTED_FILTERS;
1287
1288 if (priv->op_flags & OP_INVALID) {
1289 ath_dbg(ath9k_hw_common(priv->ah), ANY,
1290 "Unable to configure filter on invalid state\n");
1291 mutex_unlock(&priv->mutex);
1292 return;
1293 }
1294 ath9k_htc_ps_wakeup(priv);
1295
1296 priv->rxfilter = *total_flags;
1297 rfilt = ath9k_htc_calcrxfilter(priv);
1298 ath9k_hw_setrxfilter(priv->ah, rfilt);
1299
1300 ath_dbg(ath9k_hw_common(priv->ah), CONFIG, "Set HW RX filter: 0x%x\n",
1301 rfilt);
1302
1303 ath9k_htc_ps_restore(priv);
1304 mutex_unlock(&priv->mutex);
1305 }
1306
1307 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1308 struct ieee80211_vif *vif,
1309 struct ieee80211_sta *sta)
1310 {
1311 struct ath9k_htc_priv *priv = hw->priv;
1312 int ret;
1313
1314 mutex_lock(&priv->mutex);
1315 ath9k_htc_ps_wakeup(priv);
1316 ret = ath9k_htc_add_station(priv, vif, sta);
1317 if (!ret)
1318 ath9k_htc_init_rate(priv, sta);
1319 ath9k_htc_ps_restore(priv);
1320 mutex_unlock(&priv->mutex);
1321
1322 return ret;
1323 }
1324
1325 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1326 struct ieee80211_vif *vif,
1327 struct ieee80211_sta *sta)
1328 {
1329 struct ath9k_htc_priv *priv = hw->priv;
1330 struct ath9k_htc_sta *ista;
1331 int ret;
1332
1333 mutex_lock(&priv->mutex);
1334 ath9k_htc_ps_wakeup(priv);
1335 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1336 htc_sta_drain(priv->htc, ista->index);
1337 ret = ath9k_htc_remove_station(priv, vif, sta);
1338 ath9k_htc_ps_restore(priv);
1339 mutex_unlock(&priv->mutex);
1340
1341 return ret;
1342 }
1343
1344 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw,
1345 struct ieee80211_vif *vif, u16 queue,
1346 const struct ieee80211_tx_queue_params *params)
1347 {
1348 struct ath9k_htc_priv *priv = hw->priv;
1349 struct ath_common *common = ath9k_hw_common(priv->ah);
1350 struct ath9k_tx_queue_info qi;
1351 int ret = 0, qnum;
1352
1353 if (queue >= WME_NUM_AC)
1354 return 0;
1355
1356 mutex_lock(&priv->mutex);
1357 ath9k_htc_ps_wakeup(priv);
1358
1359 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1360
1361 qi.tqi_aifs = params->aifs;
1362 qi.tqi_cwmin = params->cw_min;
1363 qi.tqi_cwmax = params->cw_max;
1364 qi.tqi_burstTime = params->txop;
1365
1366 qnum = get_hw_qnum(queue, priv->hwq_map);
1367
1368 ath_dbg(common, CONFIG,
1369 "Configure tx [queue/hwq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1370 queue, qnum, params->aifs, params->cw_min,
1371 params->cw_max, params->txop);
1372
1373 ret = ath_htc_txq_update(priv, qnum, &qi);
1374 if (ret) {
1375 ath_err(common, "TXQ Update failed\n");
1376 goto out;
1377 }
1378
1379 if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1380 (qnum == priv->hwq_map[WME_AC_BE]))
1381 ath9k_htc_beaconq_config(priv);
1382 out:
1383 ath9k_htc_ps_restore(priv);
1384 mutex_unlock(&priv->mutex);
1385
1386 return ret;
1387 }
1388
1389 static int ath9k_htc_set_key(struct ieee80211_hw *hw,
1390 enum set_key_cmd cmd,
1391 struct ieee80211_vif *vif,
1392 struct ieee80211_sta *sta,
1393 struct ieee80211_key_conf *key)
1394 {
1395 struct ath9k_htc_priv *priv = hw->priv;
1396 struct ath_common *common = ath9k_hw_common(priv->ah);
1397 int ret = 0;
1398
1399 if (htc_modparam_nohwcrypt)
1400 return -ENOSPC;
1401
1402 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1403 vif->type == NL80211_IFTYPE_MESH_POINT) &&
1404 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1405 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1406 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1407 /*
1408 * For now, disable hw crypto for the RSN IBSS group keys. This
1409 * could be optimized in the future to use a modified key cache
1410 * design to support per-STA RX GTK, but until that gets
1411 * implemented, use of software crypto for group addressed
1412 * frames is a acceptable to allow RSN IBSS to be used.
1413 */
1414 return -EOPNOTSUPP;
1415 }
1416
1417 mutex_lock(&priv->mutex);
1418 ath_dbg(common, CONFIG, "Set HW Key\n");
1419 ath9k_htc_ps_wakeup(priv);
1420
1421 switch (cmd) {
1422 case SET_KEY:
1423 ret = ath_key_config(common, vif, sta, key);
1424 if (ret >= 0) {
1425 key->hw_key_idx = ret;
1426 /* push IV and Michael MIC generation to stack */
1427 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1428 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1429 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1430 if (priv->ah->sw_mgmt_crypto &&
1431 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1432 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1433 ret = 0;
1434 }
1435 break;
1436 case DISABLE_KEY:
1437 ath_key_delete(common, key);
1438 break;
1439 default:
1440 ret = -EINVAL;
1441 }
1442
1443 ath9k_htc_ps_restore(priv);
1444 mutex_unlock(&priv->mutex);
1445
1446 return ret;
1447 }
1448
1449 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1450 {
1451 struct ath_common *common = ath9k_hw_common(priv->ah);
1452
1453 ath9k_hw_write_associd(priv->ah);
1454 ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n",
1455 common->curbssid, common->curaid);
1456 }
1457
1458 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1459 {
1460 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
1461 struct ath_common *common = ath9k_hw_common(priv->ah);
1462 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1463
1464 if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) {
1465 common->curaid = bss_conf->aid;
1466 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1467 }
1468 }
1469
1470 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1471 {
1472 if (priv->num_sta_assoc_vif == 1) {
1473 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1474 ath9k_htc_bss_iter, priv);
1475 ath9k_htc_set_bssid(priv);
1476 }
1477 }
1478
1479 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1480 struct ieee80211_vif *vif,
1481 struct ieee80211_bss_conf *bss_conf,
1482 u32 changed)
1483 {
1484 struct ath9k_htc_priv *priv = hw->priv;
1485 struct ath_hw *ah = priv->ah;
1486 struct ath_common *common = ath9k_hw_common(ah);
1487
1488 mutex_lock(&priv->mutex);
1489 ath9k_htc_ps_wakeup(priv);
1490
1491 if (changed & BSS_CHANGED_ASSOC) {
1492 ath_dbg(common, CONFIG, "BSS Changed ASSOC %d\n",
1493 bss_conf->assoc);
1494
1495 bss_conf->assoc ?
1496 priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1497
1498 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1499 if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
1500 ath9k_htc_start_ani(priv);
1501 else if (priv->num_sta_assoc_vif == 0)
1502 ath9k_htc_stop_ani(priv);
1503 }
1504 }
1505
1506 if (changed & BSS_CHANGED_BSSID) {
1507 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1508 common->curaid = bss_conf->aid;
1509 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1510 ath9k_htc_set_bssid(priv);
1511 } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1512 ath9k_htc_choose_set_bssid(priv);
1513 }
1514 }
1515
1516 if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1517 ath_dbg(common, CONFIG, "Beacon enabled for BSS: %pM\n",
1518 bss_conf->bssid);
1519 ath9k_htc_set_tsfadjust(priv, vif);
1520 priv->op_flags |= OP_ENABLE_BEACON;
1521 ath9k_htc_beacon_config(priv, vif);
1522 }
1523
1524 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1525 /*
1526 * Disable SWBA interrupt only if there are no
1527 * AP/IBSS interfaces.
1528 */
1529 if ((priv->num_ap_vif <= 1) || priv->num_ibss_vif) {
1530 ath_dbg(common, CONFIG,
1531 "Beacon disabled for BSS: %pM\n",
1532 bss_conf->bssid);
1533 priv->op_flags &= ~OP_ENABLE_BEACON;
1534 ath9k_htc_beacon_config(priv, vif);
1535 }
1536 }
1537
1538 if (changed & BSS_CHANGED_BEACON_INT) {
1539 /*
1540 * Reset the HW TSF for the first AP interface.
1541 */
1542 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1543 (priv->nvifs == 1) &&
1544 (priv->num_ap_vif == 1) &&
1545 (vif->type == NL80211_IFTYPE_AP)) {
1546 priv->op_flags |= OP_TSF_RESET;
1547 }
1548 ath_dbg(common, CONFIG,
1549 "Beacon interval changed for BSS: %pM\n",
1550 bss_conf->bssid);
1551 ath9k_htc_beacon_config(priv, vif);
1552 }
1553
1554 if (changed & BSS_CHANGED_ERP_SLOT) {
1555 if (bss_conf->use_short_slot)
1556 ah->slottime = 9;
1557 else
1558 ah->slottime = 20;
1559
1560 ath9k_hw_init_global_settings(ah);
1561 }
1562
1563 if (changed & BSS_CHANGED_HT)
1564 ath9k_htc_update_rate(priv, vif, bss_conf);
1565
1566 ath9k_htc_ps_restore(priv);
1567 mutex_unlock(&priv->mutex);
1568 }
1569
1570 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw,
1571 struct ieee80211_vif *vif)
1572 {
1573 struct ath9k_htc_priv *priv = hw->priv;
1574 u64 tsf;
1575
1576 mutex_lock(&priv->mutex);
1577 ath9k_htc_ps_wakeup(priv);
1578 tsf = ath9k_hw_gettsf64(priv->ah);
1579 ath9k_htc_ps_restore(priv);
1580 mutex_unlock(&priv->mutex);
1581
1582 return tsf;
1583 }
1584
1585 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw,
1586 struct ieee80211_vif *vif, u64 tsf)
1587 {
1588 struct ath9k_htc_priv *priv = hw->priv;
1589
1590 mutex_lock(&priv->mutex);
1591 ath9k_htc_ps_wakeup(priv);
1592 ath9k_hw_settsf64(priv->ah, tsf);
1593 ath9k_htc_ps_restore(priv);
1594 mutex_unlock(&priv->mutex);
1595 }
1596
1597 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw,
1598 struct ieee80211_vif *vif)
1599 {
1600 struct ath9k_htc_priv *priv = hw->priv;
1601
1602 mutex_lock(&priv->mutex);
1603 ath9k_htc_ps_wakeup(priv);
1604 ath9k_hw_reset_tsf(priv->ah);
1605 ath9k_htc_ps_restore(priv);
1606 mutex_unlock(&priv->mutex);
1607 }
1608
1609 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1610 struct ieee80211_vif *vif,
1611 enum ieee80211_ampdu_mlme_action action,
1612 struct ieee80211_sta *sta,
1613 u16 tid, u16 *ssn, u8 buf_size)
1614 {
1615 struct ath9k_htc_priv *priv = hw->priv;
1616 struct ath9k_htc_sta *ista;
1617 int ret = 0;
1618
1619 mutex_lock(&priv->mutex);
1620 ath9k_htc_ps_wakeup(priv);
1621
1622 switch (action) {
1623 case IEEE80211_AMPDU_RX_START:
1624 break;
1625 case IEEE80211_AMPDU_RX_STOP:
1626 break;
1627 case IEEE80211_AMPDU_TX_START:
1628 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1629 if (!ret)
1630 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1631 break;
1632 case IEEE80211_AMPDU_TX_STOP:
1633 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1634 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1635 break;
1636 case IEEE80211_AMPDU_TX_OPERATIONAL:
1637 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1638 spin_lock_bh(&priv->tx.tx_lock);
1639 ista->tid_state[tid] = AGGR_OPERATIONAL;
1640 spin_unlock_bh(&priv->tx.tx_lock);
1641 break;
1642 default:
1643 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1644 }
1645
1646 ath9k_htc_ps_restore(priv);
1647 mutex_unlock(&priv->mutex);
1648
1649 return ret;
1650 }
1651
1652 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
1653 {
1654 struct ath9k_htc_priv *priv = hw->priv;
1655
1656 mutex_lock(&priv->mutex);
1657 spin_lock_bh(&priv->beacon_lock);
1658 priv->op_flags |= OP_SCANNING;
1659 spin_unlock_bh(&priv->beacon_lock);
1660 cancel_work_sync(&priv->ps_work);
1661 ath9k_htc_stop_ani(priv);
1662 mutex_unlock(&priv->mutex);
1663 }
1664
1665 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
1666 {
1667 struct ath9k_htc_priv *priv = hw->priv;
1668
1669 mutex_lock(&priv->mutex);
1670 spin_lock_bh(&priv->beacon_lock);
1671 priv->op_flags &= ~OP_SCANNING;
1672 spin_unlock_bh(&priv->beacon_lock);
1673 ath9k_htc_ps_wakeup(priv);
1674 ath9k_htc_vif_reconfig(priv);
1675 ath9k_htc_ps_restore(priv);
1676 mutex_unlock(&priv->mutex);
1677 }
1678
1679 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1680 {
1681 return 0;
1682 }
1683
1684 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1685 u8 coverage_class)
1686 {
1687 struct ath9k_htc_priv *priv = hw->priv;
1688
1689 mutex_lock(&priv->mutex);
1690 ath9k_htc_ps_wakeup(priv);
1691 priv->ah->coverage_class = coverage_class;
1692 ath9k_hw_init_global_settings(priv->ah);
1693 ath9k_htc_ps_restore(priv);
1694 mutex_unlock(&priv->mutex);
1695 }
1696
1697 /*
1698 * Currently, this is used only for selecting the minimum rate
1699 * for management frames, rate selection for data frames remain
1700 * unaffected.
1701 */
1702 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1703 struct ieee80211_vif *vif,
1704 const struct cfg80211_bitrate_mask *mask)
1705 {
1706 struct ath9k_htc_priv *priv = hw->priv;
1707 struct ath_common *common = ath9k_hw_common(priv->ah);
1708 struct ath9k_htc_target_rate_mask tmask;
1709 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1710 int ret = 0;
1711 u8 cmd_rsp;
1712
1713 memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1714
1715 tmask.vif_index = avp->index;
1716 tmask.band = IEEE80211_BAND_2GHZ;
1717 tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_2GHZ].legacy);
1718
1719 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1720 if (ret) {
1721 ath_err(common,
1722 "Unable to set 2G rate mask for "
1723 "interface at idx: %d\n", avp->index);
1724 goto out;
1725 }
1726
1727 tmask.band = IEEE80211_BAND_5GHZ;
1728 tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_5GHZ].legacy);
1729
1730 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1731 if (ret) {
1732 ath_err(common,
1733 "Unable to set 5G rate mask for "
1734 "interface at idx: %d\n", avp->index);
1735 goto out;
1736 }
1737
1738 ath_dbg(common, CONFIG, "Set bitrate masks: 0x%x, 0x%x\n",
1739 mask->control[IEEE80211_BAND_2GHZ].legacy,
1740 mask->control[IEEE80211_BAND_5GHZ].legacy);
1741 out:
1742 return ret;
1743 }
1744
1745
1746 static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
1747 struct ieee80211_low_level_stats *stats)
1748 {
1749 struct ath9k_htc_priv *priv = hw->priv;
1750 struct ath_hw *ah = priv->ah;
1751 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1752
1753 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1754 stats->dot11RTSFailureCount = mib_stats->rts_bad;
1755 stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1756 stats->dot11RTSSuccessCount = mib_stats->rts_good;
1757
1758 return 0;
1759 }
1760
1761 struct ieee80211_ops ath9k_htc_ops = {
1762 .tx = ath9k_htc_tx,
1763 .start = ath9k_htc_start,
1764 .stop = ath9k_htc_stop,
1765 .add_interface = ath9k_htc_add_interface,
1766 .remove_interface = ath9k_htc_remove_interface,
1767 .config = ath9k_htc_config,
1768 .configure_filter = ath9k_htc_configure_filter,
1769 .sta_add = ath9k_htc_sta_add,
1770 .sta_remove = ath9k_htc_sta_remove,
1771 .conf_tx = ath9k_htc_conf_tx,
1772 .bss_info_changed = ath9k_htc_bss_info_changed,
1773 .set_key = ath9k_htc_set_key,
1774 .get_tsf = ath9k_htc_get_tsf,
1775 .set_tsf = ath9k_htc_set_tsf,
1776 .reset_tsf = ath9k_htc_reset_tsf,
1777 .ampdu_action = ath9k_htc_ampdu_action,
1778 .sw_scan_start = ath9k_htc_sw_scan_start,
1779 .sw_scan_complete = ath9k_htc_sw_scan_complete,
1780 .set_rts_threshold = ath9k_htc_set_rts_threshold,
1781 .rfkill_poll = ath9k_htc_rfkill_poll_state,
1782 .set_coverage_class = ath9k_htc_set_coverage_class,
1783 .set_bitrate_mask = ath9k_htc_set_bitrate_mask,
1784 .get_stats = ath9k_htc_get_stats,
1785 };
kernel source for telekom puls (alcatel/mediatek)