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cris: add arch/cris/include/asm/serial.h
[linux-2.6/next.git] / drivers / net / wireless / ath / ath9k / htc_drv_main.c
blob7212acb2bd6ccfb2f09caf858e0b13c48998a504
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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_CONFIG,
516 "Added a station entry for: %pM (idx: %d)\n",
517 sta->addr, tsta.sta_index);
518 } else {
519 ath_dbg(common, ATH_DBG_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, ATH_DBG_CONFIG,
560 "Removed a station entry for: %pM (idx: %d)\n",
561 sta->addr, sta_idx);
562 } else {
563 ath_dbg(common, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_ANI,
797 "shortcal @%lu\n", jiffies);
798 common->ani.shortcal_timer = timestamp;
799 common->ani.resetcal_timer = timestamp;
800 }
801 } else {
802 if ((timestamp - common->ani.resetcal_timer) >=
803 ATH_RESTART_CALINTERVAL) {
804 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
805 if (common->ani.caldone)
806 common->ani.resetcal_timer = timestamp;
807 }
808 }
809
810 /* Verify whether we must check ANI */
811 if ((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 common->rx_chainmask,
830 longcal);
831
832 ath9k_htc_ps_restore(priv);
833 }
834
835 set_timer:
836 /*
837 * Set timer interval based on previous results.
838 * The interval must be the shortest necessary to satisfy ANI,
839 * short calibration and long calibration.
840 */
841 cal_interval = ATH_LONG_CALINTERVAL;
842 if (priv->ah->config.enable_ani)
843 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
844 if (!common->ani.caldone)
845 cal_interval = min(cal_interval, (u32)short_cal_interval);
846
847 ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
848 msecs_to_jiffies(cal_interval));
849 }
850
851 /**********************/
852 /* mac80211 Callbacks */
853 /**********************/
854
855 static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
856 {
857 struct ieee80211_hdr *hdr;
858 struct ath9k_htc_priv *priv = hw->priv;
859 struct ath_common *common = ath9k_hw_common(priv->ah);
860 int padpos, padsize, ret, slot;
861
862 hdr = (struct ieee80211_hdr *) skb->data;
863
864 /* Add the padding after the header if this is not already done */
865 padpos = ath9k_cmn_padpos(hdr->frame_control);
866 padsize = padpos & 3;
867 if (padsize && skb->len > padpos) {
868 if (skb_headroom(skb) < padsize) {
869 ath_dbg(common, ATH_DBG_XMIT, "No room for padding\n");
870 goto fail_tx;
871 }
872 skb_push(skb, padsize);
873 memmove(skb->data, skb->data + padsize, padpos);
874 }
875
876 slot = ath9k_htc_tx_get_slot(priv);
877 if (slot < 0) {
878 ath_dbg(common, ATH_DBG_XMIT, "No free TX slot\n");
879 goto fail_tx;
880 }
881
882 ret = ath9k_htc_tx_start(priv, skb, slot, false);
883 if (ret != 0) {
884 ath_dbg(common, ATH_DBG_XMIT, "Tx failed\n");
885 goto clear_slot;
886 }
887
888 ath9k_htc_check_stop_queues(priv);
889
890 return;
891
892 clear_slot:
893 ath9k_htc_tx_clear_slot(priv, slot);
894 fail_tx:
895 dev_kfree_skb_any(skb);
896 }
897
898 static int ath9k_htc_start(struct ieee80211_hw *hw)
899 {
900 struct ath9k_htc_priv *priv = hw->priv;
901 struct ath_hw *ah = priv->ah;
902 struct ath_common *common = ath9k_hw_common(ah);
903 struct ieee80211_channel *curchan = hw->conf.channel;
904 struct ath9k_channel *init_channel;
905 int ret = 0;
906 enum htc_phymode mode;
907 __be16 htc_mode;
908 u8 cmd_rsp;
909
910 mutex_lock(&priv->mutex);
911
912 ath_dbg(common, ATH_DBG_CONFIG,
913 "Starting driver with initial channel: %d MHz\n",
914 curchan->center_freq);
915
916 /* Ensure that HW is awake before flushing RX */
917 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
918 WMI_CMD(WMI_FLUSH_RECV_CMDID);
919
920 /* setup initial channel */
921 init_channel = ath9k_cmn_get_curchannel(hw, ah);
922
923 ath9k_hw_htc_resetinit(ah);
924 ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
925 if (ret) {
926 ath_err(common,
927 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
928 ret, curchan->center_freq);
929 mutex_unlock(&priv->mutex);
930 return ret;
931 }
932
933 ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
934 &priv->curtxpow);
935
936 mode = ath9k_htc_get_curmode(priv, init_channel);
937 htc_mode = cpu_to_be16(mode);
938 WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
939 WMI_CMD(WMI_ATH_INIT_CMDID);
940 WMI_CMD(WMI_START_RECV_CMDID);
941
942 ath9k_host_rx_init(priv);
943
944 ret = ath9k_htc_update_cap_target(priv, 0);
945 if (ret)
946 ath_dbg(common, ATH_DBG_CONFIG,
947 "Failed to update capability in target\n");
948
949 priv->op_flags &= ~OP_INVALID;
950 htc_start(priv->htc);
951
952 spin_lock_bh(&priv->tx.tx_lock);
953 priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
954 spin_unlock_bh(&priv->tx.tx_lock);
955
956 ieee80211_wake_queues(hw);
957
958 mod_timer(&priv->tx.cleanup_timer,
959 jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
960
961 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) {
962 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
963 AR_STOMP_LOW_WLAN_WGHT);
964 ath9k_hw_btcoex_enable(ah);
965 ath_htc_resume_btcoex_work(priv);
966 }
967 mutex_unlock(&priv->mutex);
968
969 return ret;
970 }
971
972 static void ath9k_htc_stop(struct ieee80211_hw *hw)
973 {
974 struct ath9k_htc_priv *priv = hw->priv;
975 struct ath_hw *ah = priv->ah;
976 struct ath_common *common = ath9k_hw_common(ah);
977 int ret __attribute__ ((unused));
978 u8 cmd_rsp;
979
980 mutex_lock(&priv->mutex);
981
982 if (priv->op_flags & OP_INVALID) {
983 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
984 mutex_unlock(&priv->mutex);
985 return;
986 }
987
988 ath9k_htc_ps_wakeup(priv);
989
990 WMI_CMD(WMI_DISABLE_INTR_CMDID);
991 WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
992 WMI_CMD(WMI_STOP_RECV_CMDID);
993
994 tasklet_kill(&priv->rx_tasklet);
995
996 del_timer_sync(&priv->tx.cleanup_timer);
997 ath9k_htc_tx_drain(priv);
998 ath9k_wmi_event_drain(priv);
999
1000 mutex_unlock(&priv->mutex);
1001
1002 /* Cancel all the running timers/work .. */
1003 cancel_work_sync(&priv->fatal_work);
1004 cancel_work_sync(&priv->ps_work);
1005
1006 #ifdef CONFIG_MAC80211_LEDS
1007 cancel_work_sync(&priv->led_work);
1008 #endif
1009 ath9k_htc_stop_ani(priv);
1010
1011 mutex_lock(&priv->mutex);
1012
1013 if (ah->btcoex_hw.enabled) {
1014 ath9k_hw_btcoex_disable(ah);
1015 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1016 ath_htc_cancel_btcoex_work(priv);
1017 }
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 priv->op_flags |= OP_INVALID;
1029
1030 ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1031 mutex_unlock(&priv->mutex);
1032 }
1033
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 if (priv->nvifs >= ATH9K_HTC_MAX_VIF) {
1047 mutex_unlock(&priv->mutex);
1048 return -ENOBUFS;
1049 }
1050
1051 if (priv->num_ibss_vif ||
1052 (priv->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
1053 ath_err(common, "IBSS coexistence with other modes is not allowed\n");
1054 mutex_unlock(&priv->mutex);
1055 return -ENOBUFS;
1056 }
1057
1058 if (((vif->type == NL80211_IFTYPE_AP) ||
1059 (vif->type == NL80211_IFTYPE_ADHOC)) &&
1060 ((priv->num_ap_vif + priv->num_ibss_vif) >= ATH9K_HTC_MAX_BCN_VIF)) {
1061 ath_err(common, "Max. number of beaconing interfaces reached\n");
1062 mutex_unlock(&priv->mutex);
1063 return -ENOBUFS;
1064 }
1065
1066 ath9k_htc_ps_wakeup(priv);
1067 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1068 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1069
1070 switch (vif->type) {
1071 case NL80211_IFTYPE_STATION:
1072 hvif.opmode = HTC_M_STA;
1073 break;
1074 case NL80211_IFTYPE_ADHOC:
1075 hvif.opmode = HTC_M_IBSS;
1076 break;
1077 case NL80211_IFTYPE_AP:
1078 hvif.opmode = HTC_M_HOSTAP;
1079 break;
1080 default:
1081 ath_err(common,
1082 "Interface type %d not yet supported\n", vif->type);
1083 ret = -EOPNOTSUPP;
1084 goto out;
1085 }
1086
1087 /* Index starts from zero on the target */
1088 avp->index = hvif.index = ffz(priv->vif_slot);
1089 hvif.rtsthreshold = cpu_to_be16(2304);
1090 WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
1091 if (ret)
1092 goto out;
1093
1094 /*
1095 * We need a node in target to tx mgmt frames
1096 * before association.
1097 */
1098 ret = ath9k_htc_add_station(priv, vif, NULL);
1099 if (ret) {
1100 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1101 goto out;
1102 }
1103
1104 ath9k_htc_set_bssid_mask(priv, vif);
1105
1106 priv->vif_slot |= (1 << avp->index);
1107 priv->nvifs++;
1108
1109 INC_VIF(priv, vif->type);
1110
1111 if ((vif->type == NL80211_IFTYPE_AP) ||
1112 (vif->type == NL80211_IFTYPE_ADHOC))
1113 ath9k_htc_assign_bslot(priv, vif);
1114
1115 ath9k_htc_set_opmode(priv);
1116
1117 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1118 !(priv->op_flags & OP_ANI_RUNNING)) {
1119 ath9k_hw_set_tsfadjust(priv->ah, 1);
1120 ath9k_htc_start_ani(priv);
1121 }
1122
1123 ath_dbg(common, ATH_DBG_CONFIG,
1124 "Attach a VIF of type: %d at idx: %d\n", vif->type, avp->index);
1125
1126 out:
1127 ath9k_htc_ps_restore(priv);
1128 mutex_unlock(&priv->mutex);
1129
1130 return ret;
1131 }
1132
1133 static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
1134 struct ieee80211_vif *vif)
1135 {
1136 struct ath9k_htc_priv *priv = hw->priv;
1137 struct ath_common *common = ath9k_hw_common(priv->ah);
1138 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1139 struct ath9k_htc_target_vif hvif;
1140 int ret = 0;
1141 u8 cmd_rsp;
1142
1143 mutex_lock(&priv->mutex);
1144 ath9k_htc_ps_wakeup(priv);
1145
1146 memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1147 memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1148 hvif.index = avp->index;
1149 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1150 if (ret) {
1151 ath_err(common, "Unable to remove interface at idx: %d\n",
1152 avp->index);
1153 }
1154 priv->nvifs--;
1155 priv->vif_slot &= ~(1 << avp->index);
1156
1157 ath9k_htc_remove_station(priv, vif, NULL);
1158
1159 DEC_VIF(priv, vif->type);
1160
1161 if ((vif->type == NL80211_IFTYPE_AP) ||
1162 (vif->type == NL80211_IFTYPE_ADHOC))
1163 ath9k_htc_remove_bslot(priv, vif);
1164
1165 ath9k_htc_set_opmode(priv);
1166
1167 ath9k_htc_set_bssid_mask(priv, vif);
1168
1169 /*
1170 * Stop ANI only if there are no associated station interfaces.
1171 */
1172 if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) {
1173 priv->rearm_ani = false;
1174 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1175 ath9k_htc_vif_iter, priv);
1176 if (!priv->rearm_ani)
1177 ath9k_htc_stop_ani(priv);
1178 }
1179
1180 ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface at idx: %d\n", avp->index);
1181
1182 ath9k_htc_ps_restore(priv);
1183 mutex_unlock(&priv->mutex);
1184 }
1185
1186 static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
1187 {
1188 struct ath9k_htc_priv *priv = hw->priv;
1189 struct ath_common *common = ath9k_hw_common(priv->ah);
1190 struct ieee80211_conf *conf = &hw->conf;
1191
1192 mutex_lock(&priv->mutex);
1193
1194 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1195 bool enable_radio = false;
1196 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1197
1198 mutex_lock(&priv->htc_pm_lock);
1199 if (!idle && priv->ps_idle)
1200 enable_radio = true;
1201 priv->ps_idle = idle;
1202 mutex_unlock(&priv->htc_pm_lock);
1203
1204 if (enable_radio) {
1205 ath_dbg(common, ATH_DBG_CONFIG,
1206 "not-idle: enabling radio\n");
1207 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1208 ath9k_htc_radio_enable(hw);
1209 }
1210 }
1211
1212 /*
1213 * Monitor interface should be added before
1214 * IEEE80211_CONF_CHANGE_CHANNEL is handled.
1215 */
1216 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1217 if ((conf->flags & IEEE80211_CONF_MONITOR) &&
1218 !priv->ah->is_monitoring)
1219 ath9k_htc_add_monitor_interface(priv);
1220 else if (priv->ah->is_monitoring)
1221 ath9k_htc_remove_monitor_interface(priv);
1222 }
1223
1224 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1225 struct ieee80211_channel *curchan = hw->conf.channel;
1226 int pos = curchan->hw_value;
1227
1228 ath_dbg(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1229 curchan->center_freq);
1230
1231 ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
1232 hw->conf.channel,
1233 hw->conf.channel_type);
1234
1235 if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
1236 ath_err(common, "Unable to set channel\n");
1237 mutex_unlock(&priv->mutex);
1238 return -EINVAL;
1239 }
1240
1241 }
1242
1243 if (changed & IEEE80211_CONF_CHANGE_PS) {
1244 if (conf->flags & IEEE80211_CONF_PS) {
1245 ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
1246 priv->ps_enabled = true;
1247 } else {
1248 priv->ps_enabled = false;
1249 cancel_work_sync(&priv->ps_work);
1250 ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1251 }
1252 }
1253
1254 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1255 priv->txpowlimit = 2 * conf->power_level;
1256 ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
1257 priv->txpowlimit, &priv->curtxpow);
1258 }
1259
1260 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1261 mutex_lock(&priv->htc_pm_lock);
1262 if (!priv->ps_idle) {
1263 mutex_unlock(&priv->htc_pm_lock);
1264 goto out;
1265 }
1266 mutex_unlock(&priv->htc_pm_lock);
1267
1268 ath_dbg(common, ATH_DBG_CONFIG,
1269 "idle: disabling radio\n");
1270 ath9k_htc_radio_disable(hw);
1271 }
1272
1273 out:
1274 mutex_unlock(&priv->mutex);
1275 return 0;
1276 }
1277
1278 #define SUPPORTED_FILTERS \
1279 (FIF_PROMISC_IN_BSS | \
1280 FIF_ALLMULTI | \
1281 FIF_CONTROL | \
1282 FIF_PSPOLL | \
1283 FIF_OTHER_BSS | \
1284 FIF_BCN_PRBRESP_PROMISC | \
1285 FIF_PROBE_REQ | \
1286 FIF_FCSFAIL)
1287
1288 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1289 unsigned int changed_flags,
1290 unsigned int *total_flags,
1291 u64 multicast)
1292 {
1293 struct ath9k_htc_priv *priv = hw->priv;
1294 u32 rfilt;
1295
1296 mutex_lock(&priv->mutex);
1297 changed_flags &= SUPPORTED_FILTERS;
1298 *total_flags &= SUPPORTED_FILTERS;
1299
1300 if (priv->op_flags & OP_INVALID) {
1301 ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_ANY,
1302 "Unable to configure filter on invalid state\n");
1303 return;
1304 }
1305 ath9k_htc_ps_wakeup(priv);
1306
1307 priv->rxfilter = *total_flags;
1308 rfilt = ath9k_htc_calcrxfilter(priv);
1309 ath9k_hw_setrxfilter(priv->ah, rfilt);
1310
1311 ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
1312 "Set HW RX filter: 0x%x\n", rfilt);
1313
1314 ath9k_htc_ps_restore(priv);
1315 mutex_unlock(&priv->mutex);
1316 }
1317
1318 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1319 struct ieee80211_vif *vif,
1320 struct ieee80211_sta *sta)
1321 {
1322 struct ath9k_htc_priv *priv = hw->priv;
1323 int ret;
1324
1325 mutex_lock(&priv->mutex);
1326 ath9k_htc_ps_wakeup(priv);
1327 ret = ath9k_htc_add_station(priv, vif, sta);
1328 if (!ret)
1329 ath9k_htc_init_rate(priv, sta);
1330 ath9k_htc_ps_restore(priv);
1331 mutex_unlock(&priv->mutex);
1332
1333 return ret;
1334 }
1335
1336 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1337 struct ieee80211_vif *vif,
1338 struct ieee80211_sta *sta)
1339 {
1340 struct ath9k_htc_priv *priv = hw->priv;
1341 struct ath9k_htc_sta *ista;
1342 int ret;
1343
1344 mutex_lock(&priv->mutex);
1345 ath9k_htc_ps_wakeup(priv);
1346 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1347 htc_sta_drain(priv->htc, ista->index);
1348 ret = ath9k_htc_remove_station(priv, vif, sta);
1349 ath9k_htc_ps_restore(priv);
1350 mutex_unlock(&priv->mutex);
1351
1352 return ret;
1353 }
1354
1355 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, u16 queue,
1356 const struct ieee80211_tx_queue_params *params)
1357 {
1358 struct ath9k_htc_priv *priv = hw->priv;
1359 struct ath_common *common = ath9k_hw_common(priv->ah);
1360 struct ath9k_tx_queue_info qi;
1361 int ret = 0, qnum;
1362
1363 if (queue >= WME_NUM_AC)
1364 return 0;
1365
1366 mutex_lock(&priv->mutex);
1367 ath9k_htc_ps_wakeup(priv);
1368
1369 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1370
1371 qi.tqi_aifs = params->aifs;
1372 qi.tqi_cwmin = params->cw_min;
1373 qi.tqi_cwmax = params->cw_max;
1374 qi.tqi_burstTime = params->txop;
1375
1376 qnum = get_hw_qnum(queue, priv->hwq_map);
1377
1378 ath_dbg(common, ATH_DBG_CONFIG,
1379 "Configure tx [queue/hwq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1380 queue, qnum, params->aifs, params->cw_min,
1381 params->cw_max, params->txop);
1382
1383 ret = ath_htc_txq_update(priv, qnum, &qi);
1384 if (ret) {
1385 ath_err(common, "TXQ Update failed\n");
1386 goto out;
1387 }
1388
1389 if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1390 (qnum == priv->hwq_map[WME_AC_BE]))
1391 ath9k_htc_beaconq_config(priv);
1392 out:
1393 ath9k_htc_ps_restore(priv);
1394 mutex_unlock(&priv->mutex);
1395
1396 return ret;
1397 }
1398
1399 static int ath9k_htc_set_key(struct ieee80211_hw *hw,
1400 enum set_key_cmd cmd,
1401 struct ieee80211_vif *vif,
1402 struct ieee80211_sta *sta,
1403 struct ieee80211_key_conf *key)
1404 {
1405 struct ath9k_htc_priv *priv = hw->priv;
1406 struct ath_common *common = ath9k_hw_common(priv->ah);
1407 int ret = 0;
1408
1409 if (htc_modparam_nohwcrypt)
1410 return -ENOSPC;
1411
1412 mutex_lock(&priv->mutex);
1413 ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1414 ath9k_htc_ps_wakeup(priv);
1415
1416 switch (cmd) {
1417 case SET_KEY:
1418 ret = ath_key_config(common, vif, sta, key);
1419 if (ret >= 0) {
1420 key->hw_key_idx = ret;
1421 /* push IV and Michael MIC generation to stack */
1422 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1423 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1424 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1425 if (priv->ah->sw_mgmt_crypto &&
1426 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1427 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1428 ret = 0;
1429 }
1430 break;
1431 case DISABLE_KEY:
1432 ath_key_delete(common, key);
1433 break;
1434 default:
1435 ret = -EINVAL;
1436 }
1437
1438 ath9k_htc_ps_restore(priv);
1439 mutex_unlock(&priv->mutex);
1440
1441 return ret;
1442 }
1443
1444 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1445 {
1446 struct ath_common *common = ath9k_hw_common(priv->ah);
1447
1448 ath9k_hw_write_associd(priv->ah);
1449 ath_dbg(common, ATH_DBG_CONFIG,
1450 "BSSID: %pM aid: 0x%x\n",
1451 common->curbssid, common->curaid);
1452 }
1453
1454 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1455 {
1456 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
1457 struct ath_common *common = ath9k_hw_common(priv->ah);
1458 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1459
1460 if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) {
1461 common->curaid = bss_conf->aid;
1462 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1463 }
1464 }
1465
1466 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1467 {
1468 if (priv->num_sta_assoc_vif == 1) {
1469 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1470 ath9k_htc_bss_iter, priv);
1471 ath9k_htc_set_bssid(priv);
1472 }
1473 }
1474
1475 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1476 struct ieee80211_vif *vif,
1477 struct ieee80211_bss_conf *bss_conf,
1478 u32 changed)
1479 {
1480 struct ath9k_htc_priv *priv = hw->priv;
1481 struct ath_hw *ah = priv->ah;
1482 struct ath_common *common = ath9k_hw_common(ah);
1483
1484 mutex_lock(&priv->mutex);
1485 ath9k_htc_ps_wakeup(priv);
1486
1487 if (changed & BSS_CHANGED_ASSOC) {
1488 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1489 bss_conf->assoc);
1490
1491 bss_conf->assoc ?
1492 priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1493
1494 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1495 if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
1496 ath9k_htc_start_ani(priv);
1497 else if (priv->num_sta_assoc_vif == 0)
1498 ath9k_htc_stop_ani(priv);
1499 }
1500 }
1501
1502 if (changed & BSS_CHANGED_BSSID) {
1503 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1504 common->curaid = bss_conf->aid;
1505 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1506 ath9k_htc_set_bssid(priv);
1507 } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1508 ath9k_htc_choose_set_bssid(priv);
1509 }
1510 }
1511
1512 if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1513 ath_dbg(common, ATH_DBG_CONFIG,
1514 "Beacon enabled for BSS: %pM\n", bss_conf->bssid);
1515 ath9k_htc_set_tsfadjust(priv, vif);
1516 priv->op_flags |= OP_ENABLE_BEACON;
1517 ath9k_htc_beacon_config(priv, vif);
1518 }
1519
1520 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1521 /*
1522 * Disable SWBA interrupt only if there are no
1523 * AP/IBSS interfaces.
1524 */
1525 if ((priv->num_ap_vif <= 1) || priv->num_ibss_vif) {
1526 ath_dbg(common, ATH_DBG_CONFIG,
1527 "Beacon disabled for BSS: %pM\n",
1528 bss_conf->bssid);
1529 priv->op_flags &= ~OP_ENABLE_BEACON;
1530 ath9k_htc_beacon_config(priv, vif);
1531 }
1532 }
1533
1534 if (changed & BSS_CHANGED_BEACON_INT) {
1535 /*
1536 * Reset the HW TSF for the first AP interface.
1537 */
1538 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1539 (priv->nvifs == 1) &&
1540 (priv->num_ap_vif == 1) &&
1541 (vif->type == NL80211_IFTYPE_AP)) {
1542 priv->op_flags |= OP_TSF_RESET;
1543 }
1544 ath_dbg(common, ATH_DBG_CONFIG,
1545 "Beacon interval changed for BSS: %pM\n",
1546 bss_conf->bssid);
1547 ath9k_htc_beacon_config(priv, vif);
1548 }
1549
1550 if (changed & BSS_CHANGED_ERP_SLOT) {
1551 if (bss_conf->use_short_slot)
1552 ah->slottime = 9;
1553 else
1554 ah->slottime = 20;
1555
1556 ath9k_hw_init_global_settings(ah);
1557 }
1558
1559 if (changed & BSS_CHANGED_HT)
1560 ath9k_htc_update_rate(priv, vif, bss_conf);
1561
1562 ath9k_htc_ps_restore(priv);
1563 mutex_unlock(&priv->mutex);
1564 }
1565
1566 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw)
1567 {
1568 struct ath9k_htc_priv *priv = hw->priv;
1569 u64 tsf;
1570
1571 mutex_lock(&priv->mutex);
1572 ath9k_htc_ps_wakeup(priv);
1573 tsf = ath9k_hw_gettsf64(priv->ah);
1574 ath9k_htc_ps_restore(priv);
1575 mutex_unlock(&priv->mutex);
1576
1577 return tsf;
1578 }
1579
1580 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1581 {
1582 struct ath9k_htc_priv *priv = hw->priv;
1583
1584 mutex_lock(&priv->mutex);
1585 ath9k_htc_ps_wakeup(priv);
1586 ath9k_hw_settsf64(priv->ah, tsf);
1587 ath9k_htc_ps_restore(priv);
1588 mutex_unlock(&priv->mutex);
1589 }
1590
1591 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
1592 {
1593 struct ath9k_htc_priv *priv = hw->priv;
1594
1595 mutex_lock(&priv->mutex);
1596 ath9k_htc_ps_wakeup(priv);
1597 ath9k_hw_reset_tsf(priv->ah);
1598 ath9k_htc_ps_restore(priv);
1599 mutex_unlock(&priv->mutex);
1600 }
1601
1602 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif,
1604 enum ieee80211_ampdu_mlme_action action,
1605 struct ieee80211_sta *sta,
1606 u16 tid, u16 *ssn, u8 buf_size)
1607 {
1608 struct ath9k_htc_priv *priv = hw->priv;
1609 struct ath9k_htc_sta *ista;
1610 int ret = 0;
1611
1612 mutex_lock(&priv->mutex);
1613 ath9k_htc_ps_wakeup(priv);
1614
1615 switch (action) {
1616 case IEEE80211_AMPDU_RX_START:
1617 break;
1618 case IEEE80211_AMPDU_RX_STOP:
1619 break;
1620 case IEEE80211_AMPDU_TX_START:
1621 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1622 if (!ret)
1623 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1624 break;
1625 case IEEE80211_AMPDU_TX_STOP:
1626 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1627 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1628 break;
1629 case IEEE80211_AMPDU_TX_OPERATIONAL:
1630 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1631 spin_lock_bh(&priv->tx.tx_lock);
1632 ista->tid_state[tid] = AGGR_OPERATIONAL;
1633 spin_unlock_bh(&priv->tx.tx_lock);
1634 break;
1635 default:
1636 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1637 }
1638
1639 ath9k_htc_ps_restore(priv);
1640 mutex_unlock(&priv->mutex);
1641
1642 return ret;
1643 }
1644
1645 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
1646 {
1647 struct ath9k_htc_priv *priv = hw->priv;
1648
1649 mutex_lock(&priv->mutex);
1650 spin_lock_bh(&priv->beacon_lock);
1651 priv->op_flags |= OP_SCANNING;
1652 spin_unlock_bh(&priv->beacon_lock);
1653 cancel_work_sync(&priv->ps_work);
1654 ath9k_htc_stop_ani(priv);
1655 mutex_unlock(&priv->mutex);
1656 }
1657
1658 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
1659 {
1660 struct ath9k_htc_priv *priv = hw->priv;
1661
1662 mutex_lock(&priv->mutex);
1663 spin_lock_bh(&priv->beacon_lock);
1664 priv->op_flags &= ~OP_SCANNING;
1665 spin_unlock_bh(&priv->beacon_lock);
1666 ath9k_htc_ps_wakeup(priv);
1667 ath9k_htc_vif_reconfig(priv);
1668 ath9k_htc_ps_restore(priv);
1669 mutex_unlock(&priv->mutex);
1670 }
1671
1672 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1673 {
1674 return 0;
1675 }
1676
1677 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1678 u8 coverage_class)
1679 {
1680 struct ath9k_htc_priv *priv = hw->priv;
1681
1682 mutex_lock(&priv->mutex);
1683 ath9k_htc_ps_wakeup(priv);
1684 priv->ah->coverage_class = coverage_class;
1685 ath9k_hw_init_global_settings(priv->ah);
1686 ath9k_htc_ps_restore(priv);
1687 mutex_unlock(&priv->mutex);
1688 }
1689
1690 /*
1691 * Currently, this is used only for selecting the minimum rate
1692 * for management frames, rate selection for data frames remain
1693 * unaffected.
1694 */
1695 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1696 struct ieee80211_vif *vif,
1697 const struct cfg80211_bitrate_mask *mask)
1698 {
1699 struct ath9k_htc_priv *priv = hw->priv;
1700 struct ath_common *common = ath9k_hw_common(priv->ah);
1701 struct ath9k_htc_target_rate_mask tmask;
1702 struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1703 int ret = 0;
1704 u8 cmd_rsp;
1705
1706 memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1707
1708 tmask.vif_index = avp->index;
1709 tmask.band = IEEE80211_BAND_2GHZ;
1710 tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_2GHZ].legacy);
1711
1712 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1713 if (ret) {
1714 ath_err(common,
1715 "Unable to set 2G rate mask for "
1716 "interface at idx: %d\n", avp->index);
1717 goto out;
1718 }
1719
1720 tmask.band = IEEE80211_BAND_5GHZ;
1721 tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_5GHZ].legacy);
1722
1723 WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1724 if (ret) {
1725 ath_err(common,
1726 "Unable to set 5G rate mask for "
1727 "interface at idx: %d\n", avp->index);
1728 goto out;
1729 }
1730
1731 ath_dbg(common, ATH_DBG_CONFIG,
1732 "Set bitrate masks: 0x%x, 0x%x\n",
1733 mask->control[IEEE80211_BAND_2GHZ].legacy,
1734 mask->control[IEEE80211_BAND_5GHZ].legacy);
1735 out:
1736 return ret;
1737 }
1738
1739 struct ieee80211_ops ath9k_htc_ops = {
1740 .tx = ath9k_htc_tx,
1741 .start = ath9k_htc_start,
1742 .stop = ath9k_htc_stop,
1743 .add_interface = ath9k_htc_add_interface,
1744 .remove_interface = ath9k_htc_remove_interface,
1745 .config = ath9k_htc_config,
1746 .configure_filter = ath9k_htc_configure_filter,
1747 .sta_add = ath9k_htc_sta_add,
1748 .sta_remove = ath9k_htc_sta_remove,
1749 .conf_tx = ath9k_htc_conf_tx,
1750 .bss_info_changed = ath9k_htc_bss_info_changed,
1751 .set_key = ath9k_htc_set_key,
1752 .get_tsf = ath9k_htc_get_tsf,
1753 .set_tsf = ath9k_htc_set_tsf,
1754 .reset_tsf = ath9k_htc_reset_tsf,
1755 .ampdu_action = ath9k_htc_ampdu_action,
1756 .sw_scan_start = ath9k_htc_sw_scan_start,
1757 .sw_scan_complete = ath9k_htc_sw_scan_complete,
1758 .set_rts_threshold = ath9k_htc_set_rts_threshold,
1759 .rfkill_poll = ath9k_htc_rfkill_poll_state,
1760 .set_coverage_class = ath9k_htc_set_coverage_class,
1761 .set_bitrate_mask = ath9k_htc_set_bitrate_mask,
1762 };
linux-next