blob: cf6fa54a2fa3a618e85bb477a6a7da626a083510 [file] [log] [blame]
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001/*
Sujithcee075a2009-03-13 09:07:23 +05302 * Copyright (c) 2008-2009 Atheros Communications Inc.
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07003 *
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
Luis R. Rodriguezf078f202008-08-04 00:16:41 -070017#include <linux/nl80211.h>
Sujith394cf0a2009-02-09 13:26:54 +053018#include "ath9k.h"
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -070019#include "btcoex.h"
Luis R. Rodriguezf078f202008-08-04 00:16:41 -070020
Sujithff37e332008-11-24 12:07:55 +053021static void ath_update_txpow(struct ath_softc *sc)
22{
Sujithcbe61d82009-02-09 13:27:12 +053023 struct ath_hw *ah = sc->sc_ah;
Sujithff37e332008-11-24 12:07:55 +053024
Sujith17d79042009-02-09 13:27:03 +053025 if (sc->curtxpow != sc->config.txpowlimit) {
26 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
Sujithff37e332008-11-24 12:07:55 +053027 /* read back in case value is clamped */
Felix Fietkau9cc32712010-06-12 17:22:29 +020028 sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
Sujithff37e332008-11-24 12:07:55 +053029 }
30}
31
32static u8 parse_mpdudensity(u8 mpdudensity)
33{
34 /*
35 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
36 * 0 for no restriction
37 * 1 for 1/4 us
38 * 2 for 1/2 us
39 * 3 for 1 us
40 * 4 for 2 us
41 * 5 for 4 us
42 * 6 for 8 us
43 * 7 for 16 us
44 */
45 switch (mpdudensity) {
46 case 0:
47 return 0;
48 case 1:
49 case 2:
50 case 3:
51 /* Our lower layer calculations limit our precision to
52 1 microsecond */
53 return 1;
54 case 4:
55 return 2;
56 case 5:
57 return 4;
58 case 6:
59 return 8;
60 case 7:
61 return 16;
62 default:
63 return 0;
64 }
65}
66
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +053067static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
68 struct ieee80211_hw *hw)
69{
70 struct ieee80211_channel *curchan = hw->conf.channel;
71 struct ath9k_channel *channel;
72 u8 chan_idx;
73
74 chan_idx = curchan->hw_value;
75 channel = &sc->sc_ah->channels[chan_idx];
76 ath9k_update_ichannel(sc, hw, channel);
77 return channel;
78}
79
Sujith55624202010-01-08 10:36:02 +053080bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
Luis R. Rodriguez8c77a562009-09-09 21:02:34 -070081{
82 unsigned long flags;
83 bool ret;
84
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -070085 spin_lock_irqsave(&sc->sc_pm_lock, flags);
86 ret = ath9k_hw_setpower(sc->sc_ah, mode);
87 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
Luis R. Rodriguez8c77a562009-09-09 21:02:34 -070088
89 return ret;
90}
91
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -070092void ath9k_ps_wakeup(struct ath_softc *sc)
93{
Felix Fietkau898c9142010-10-12 14:02:53 +020094 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -070095 unsigned long flags;
96
97 spin_lock_irqsave(&sc->sc_pm_lock, flags);
98 if (++sc->ps_usecount != 1)
99 goto unlock;
100
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700101 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -0700102
Felix Fietkau898c9142010-10-12 14:02:53 +0200103 /*
104 * While the hardware is asleep, the cycle counters contain no
105 * useful data. Better clear them now so that they don't mess up
106 * survey data results.
107 */
108 spin_lock(&common->cc_lock);
109 ath_hw_cycle_counters_update(common);
110 memset(&common->cc_survey, 0, sizeof(common->cc_survey));
111 spin_unlock(&common->cc_lock);
112
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -0700113 unlock:
114 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
115}
116
117void ath9k_ps_restore(struct ath_softc *sc)
118{
Felix Fietkau898c9142010-10-12 14:02:53 +0200119 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -0700120 unsigned long flags;
121
122 spin_lock_irqsave(&sc->sc_pm_lock, flags);
123 if (--sc->ps_usecount != 0)
124 goto unlock;
125
Felix Fietkau898c9142010-10-12 14:02:53 +0200126 spin_lock(&common->cc_lock);
127 ath_hw_cycle_counters_update(common);
128 spin_unlock(&common->cc_lock);
129
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +0530130 if (sc->ps_idle)
131 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
132 else if (sc->ps_enabled &&
133 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
Sujith1b04b932010-01-08 10:36:05 +0530134 PS_WAIT_FOR_CAB |
135 PS_WAIT_FOR_PSPOLL_DATA |
136 PS_WAIT_FOR_TX_ACK)))
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700137 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
Luis R. Rodrigueza91d75ae2009-09-09 20:29:18 -0700138
139 unlock:
140 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
141}
142
Felix Fietkau5ee08652010-07-31 00:11:59 +0200143static void ath_start_ani(struct ath_common *common)
144{
145 struct ath_hw *ah = common->ah;
146 unsigned long timestamp = jiffies_to_msecs(jiffies);
147 struct ath_softc *sc = (struct ath_softc *) common->priv;
148
149 if (!(sc->sc_flags & SC_OP_ANI_RUN))
150 return;
151
152 if (sc->sc_flags & SC_OP_OFFCHANNEL)
153 return;
154
155 common->ani.longcal_timer = timestamp;
156 common->ani.shortcal_timer = timestamp;
157 common->ani.checkani_timer = timestamp;
158
159 mod_timer(&common->ani.timer,
160 jiffies +
161 msecs_to_jiffies((u32)ah->config.ani_poll_interval));
162}
163
Felix Fietkau34300982010-10-10 18:21:52 +0200164static void ath_update_survey_nf(struct ath_softc *sc, int channel)
165{
166 struct ath_hw *ah = sc->sc_ah;
167 struct ath9k_channel *chan = &ah->channels[channel];
168 struct survey_info *survey = &sc->survey[channel];
169
170 if (chan->noisefloor) {
171 survey->filled |= SURVEY_INFO_NOISE_DBM;
172 survey->noise = chan->noisefloor;
173 }
174}
175
176static void ath_update_survey_stats(struct ath_softc *sc)
177{
178 struct ath_hw *ah = sc->sc_ah;
179 struct ath_common *common = ath9k_hw_common(ah);
180 int pos = ah->curchan - &ah->channels[0];
181 struct survey_info *survey = &sc->survey[pos];
182 struct ath_cycle_counters *cc = &common->cc_survey;
183 unsigned int div = common->clockrate * 1000;
184
Felix Fietkau08457352010-10-20 15:59:28 +0200185 if (!ah->curchan)
186 return;
187
Felix Fietkau898c9142010-10-12 14:02:53 +0200188 if (ah->power_mode == ATH9K_PM_AWAKE)
189 ath_hw_cycle_counters_update(common);
Felix Fietkau34300982010-10-10 18:21:52 +0200190
191 if (cc->cycles > 0) {
192 survey->filled |= SURVEY_INFO_CHANNEL_TIME |
193 SURVEY_INFO_CHANNEL_TIME_BUSY |
194 SURVEY_INFO_CHANNEL_TIME_RX |
195 SURVEY_INFO_CHANNEL_TIME_TX;
196 survey->channel_time += cc->cycles / div;
197 survey->channel_time_busy += cc->rx_busy / div;
198 survey->channel_time_rx += cc->rx_frame / div;
199 survey->channel_time_tx += cc->tx_frame / div;
200 }
201 memset(cc, 0, sizeof(*cc));
202
203 ath_update_survey_nf(sc, pos);
204}
205
Sujithff37e332008-11-24 12:07:55 +0530206/*
207 * Set/change channels. If the channel is really being changed, it's done
208 * by reseting the chip. To accomplish this we must first cleanup any pending
209 * DMA, then restart stuff.
210*/
Jouni Malinen0e2dedf2009-03-03 19:23:32 +0200211int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
212 struct ath9k_channel *hchan)
Sujithff37e332008-11-24 12:07:55 +0530213{
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200214 struct ath_wiphy *aphy = hw->priv;
Sujithcbe61d82009-02-09 13:27:12 +0530215 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700216 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez25c56ee2009-09-13 23:04:44 -0700217 struct ieee80211_conf *conf = &common->hw->conf;
Sujithff37e332008-11-24 12:07:55 +0530218 bool fastcc = true, stopped;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800219 struct ieee80211_channel *channel = hw->conf.channel;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200220 struct ath9k_hw_cal_data *caldata = NULL;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800221 int r;
Sujithff37e332008-11-24 12:07:55 +0530222
223 if (sc->sc_flags & SC_OP_INVALID)
224 return -EIO;
225
Felix Fietkau5ee08652010-07-31 00:11:59 +0200226 del_timer_sync(&common->ani.timer);
227 cancel_work_sync(&sc->paprd_work);
228 cancel_work_sync(&sc->hw_check_work);
229 cancel_delayed_work_sync(&sc->tx_complete_work);
230
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530231 ath9k_ps_wakeup(sc);
232
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800233 /*
234 * This is only performed if the channel settings have
235 * actually changed.
236 *
237 * To switch channels clear any pending DMA operations;
238 * wait long enough for the RX fifo to drain, reset the
239 * hardware at the new frequency, and then re-enable
240 * the relevant bits of the h/w.
241 */
242 ath9k_hw_set_interrupts(ah, 0);
Sujith043a0402009-01-16 21:38:47 +0530243 ath_drain_all_txq(sc, false);
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700244
245 spin_lock_bh(&sc->rx.pcu_lock);
246
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800247 stopped = ath_stoprecv(sc);
Sujithff37e332008-11-24 12:07:55 +0530248
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800249 /* XXX: do not flush receive queue here. We don't want
250 * to flush data frames already in queue because of
251 * changing channel. */
Sujithff37e332008-11-24 12:07:55 +0530252
Felix Fietkau5ee08652010-07-31 00:11:59 +0200253 if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800254 fastcc = false;
Sujithff37e332008-11-24 12:07:55 +0530255
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200256 if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
257 caldata = &aphy->caldata;
258
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700259 ath_print(common, ATH_DBG_CONFIG,
Luis R. Rodriguez1e51b2f2010-07-29 22:56:22 -0400260 "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700261 sc->sc_ah->curchan->channel,
Luis R. Rodriguez1e51b2f2010-07-29 22:56:22 -0400262 channel->center_freq, conf_is_ht40(conf),
263 fastcc);
Sujith99405f92008-11-24 12:08:35 +0530264
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800265 spin_lock_bh(&sc->sc_resetlock);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800266
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200267 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800268 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700269 ath_print(common, ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500270 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700271 "reset status %d\n",
272 channel->center_freq, r);
Sujithff37e332008-11-24 12:07:55 +0530273 spin_unlock_bh(&sc->sc_resetlock);
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700274 spin_unlock_bh(&sc->rx.pcu_lock);
Gabor Juhos39892792009-06-15 17:49:09 +0200275 goto ps_restore;
Sujithff37e332008-11-24 12:07:55 +0530276 }
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800277 spin_unlock_bh(&sc->sc_resetlock);
278
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800279 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700280 ath_print(common, ATH_DBG_FATAL,
281 "Unable to restart recv logic\n");
Gabor Juhos39892792009-06-15 17:49:09 +0200282 r = -EIO;
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700283 spin_unlock_bh(&sc->rx.pcu_lock);
Gabor Juhos39892792009-06-15 17:49:09 +0200284 goto ps_restore;
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800285 }
286
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700287 spin_unlock_bh(&sc->rx.pcu_lock);
288
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800289 ath_update_txpow(sc);
Pavel Roskin30691682010-03-31 18:05:31 -0400290 ath9k_hw_set_interrupts(ah, ah->imask);
Gabor Juhos39892792009-06-15 17:49:09 +0200291
Luis R. Rodriguez48a6a462010-09-16 15:12:28 -0400292 if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -0400293 ath_beacon_config(sc, NULL);
Luis R. Rodriguez48a6a462010-09-16 15:12:28 -0400294 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
295 ath_start_ani(common);
296 }
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -0400297
Gabor Juhos39892792009-06-15 17:49:09 +0200298 ps_restore:
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530299 ath9k_ps_restore(sc);
Gabor Juhos39892792009-06-15 17:49:09 +0200300 return r;
Sujithff37e332008-11-24 12:07:55 +0530301}
302
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400303static void ath_paprd_activate(struct ath_softc *sc)
304{
305 struct ath_hw *ah = sc->sc_ah;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200306 struct ath9k_hw_cal_data *caldata = ah->caldata;
Vasanthakumar Thiagarajan90945372010-09-20 22:54:46 -0700307 struct ath_common *common = ath9k_hw_common(ah);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400308 int chain;
309
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200310 if (!caldata || !caldata->paprd_done)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400311 return;
312
313 ath9k_ps_wakeup(sc);
Felix Fietkauddfef7922010-07-30 21:02:11 +0200314 ar9003_paprd_enable(ah, false);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400315 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
Vasanthakumar Thiagarajan90945372010-09-20 22:54:46 -0700316 if (!(common->tx_chainmask & BIT(chain)))
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400317 continue;
318
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200319 ar9003_paprd_populate_single_table(ah, caldata, chain);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400320 }
321
322 ar9003_paprd_enable(ah, true);
323 ath9k_ps_restore(sc);
324}
325
326void ath_paprd_calibrate(struct work_struct *work)
327{
328 struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
329 struct ieee80211_hw *hw = sc->hw;
330 struct ath_hw *ah = sc->sc_ah;
331 struct ieee80211_hdr *hdr;
332 struct sk_buff *skb = NULL;
333 struct ieee80211_tx_info *tx_info;
334 int band = hw->conf.channel->band;
335 struct ieee80211_supported_band *sband = &sc->sbands[band];
336 struct ath_tx_control txctl;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200337 struct ath9k_hw_cal_data *caldata = ah->caldata;
Vasanthakumar Thiagarajan90945372010-09-20 22:54:46 -0700338 struct ath_common *common = ath9k_hw_common(ah);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400339 int qnum, ftype;
340 int chain_ok = 0;
341 int chain;
342 int len = 1800;
343 int time_left;
344 int i;
345
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200346 if (!caldata)
347 return;
348
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400349 skb = alloc_skb(len, GFP_KERNEL);
350 if (!skb)
351 return;
352
353 tx_info = IEEE80211_SKB_CB(skb);
354
355 skb_put(skb, len);
356 memset(skb->data, 0, len);
357 hdr = (struct ieee80211_hdr *)skb->data;
358 ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
359 hdr->frame_control = cpu_to_le16(ftype);
John W. Linvillea3d3da12010-07-20 13:15:31 -0400360 hdr->duration_id = cpu_to_le16(10);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400361 memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
362 memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
363 memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
364
365 memset(&txctl, 0, sizeof(txctl));
366 qnum = sc->tx.hwq_map[WME_AC_BE];
367 txctl.txq = &sc->tx.txq[qnum];
368
Vasanthakumar Thiagarajan47399f12010-06-24 04:09:27 -0700369 ath9k_ps_wakeup(sc);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400370 ar9003_paprd_init_table(ah);
371 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
Vasanthakumar Thiagarajan90945372010-09-20 22:54:46 -0700372 if (!(common->tx_chainmask & BIT(chain)))
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400373 continue;
374
375 chain_ok = 0;
376 memset(tx_info, 0, sizeof(*tx_info));
377 tx_info->band = band;
378
379 for (i = 0; i < 4; i++) {
380 tx_info->control.rates[i].idx = sband->n_bitrates - 1;
381 tx_info->control.rates[i].count = 6;
382 }
383
384 init_completion(&sc->paprd_complete);
385 ar9003_paprd_setup_gain_table(ah, chain);
386 txctl.paprd = BIT(chain);
387 if (ath_tx_start(hw, skb, &txctl) != 0)
388 break;
389
390 time_left = wait_for_completion_timeout(&sc->paprd_complete,
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700391 msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400392 if (!time_left) {
393 ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
394 "Timeout waiting for paprd training on "
395 "TX chain %d\n",
396 chain);
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700397 goto fail_paprd;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400398 }
399
400 if (!ar9003_paprd_is_done(ah))
401 break;
402
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200403 if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400404 break;
405
406 chain_ok = 1;
407 }
408 kfree_skb(skb);
409
410 if (chain_ok) {
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200411 caldata->paprd_done = true;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400412 ath_paprd_activate(sc);
413 }
414
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700415fail_paprd:
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400416 ath9k_ps_restore(sc);
417}
418
Sujithff37e332008-11-24 12:07:55 +0530419/*
420 * This routine performs the periodic noise floor calibration function
421 * that is used to adjust and optimize the chip performance. This
422 * takes environmental changes (location, temperature) into account.
423 * When the task is complete, it reschedules itself depending on the
424 * appropriate interval that was calculated.
425 */
Sujith55624202010-01-08 10:36:02 +0530426void ath_ani_calibrate(unsigned long data)
Sujithff37e332008-11-24 12:07:55 +0530427{
Sujith20977d32009-02-20 15:13:28 +0530428 struct ath_softc *sc = (struct ath_softc *)data;
429 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700430 struct ath_common *common = ath9k_hw_common(ah);
Sujithff37e332008-11-24 12:07:55 +0530431 bool longcal = false;
432 bool shortcal = false;
433 bool aniflag = false;
434 unsigned int timestamp = jiffies_to_msecs(jiffies);
Felix Fietkau60444742010-08-02 15:53:15 +0200435 u32 cal_interval, short_cal_interval, long_cal_interval;
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200436 unsigned long flags;
Felix Fietkau60444742010-08-02 15:53:15 +0200437
438 if (ah->caldata && ah->caldata->nfcal_interference)
439 long_cal_interval = ATH_LONG_CALINTERVAL_INT;
440 else
441 long_cal_interval = ATH_LONG_CALINTERVAL;
Sujithff37e332008-11-24 12:07:55 +0530442
Sujith20977d32009-02-20 15:13:28 +0530443 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
444 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
Sujithff37e332008-11-24 12:07:55 +0530445
Jouni Malinen1ffc1c62009-05-19 17:01:39 +0300446 /* Only calibrate if awake */
447 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
448 goto set_timer;
449
450 ath9k_ps_wakeup(sc);
451
Sujithff37e332008-11-24 12:07:55 +0530452 /* Long calibration runs independently of short calibration. */
Felix Fietkau60444742010-08-02 15:53:15 +0200453 if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
Sujithff37e332008-11-24 12:07:55 +0530454 longcal = true;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700455 ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800456 common->ani.longcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530457 }
458
Sujith17d79042009-02-09 13:27:03 +0530459 /* Short calibration applies only while caldone is false */
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800460 if (!common->ani.caldone) {
461 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
Sujithff37e332008-11-24 12:07:55 +0530462 shortcal = true;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700463 ath_print(common, ATH_DBG_ANI,
464 "shortcal @%lu\n", jiffies);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800465 common->ani.shortcal_timer = timestamp;
466 common->ani.resetcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530467 }
468 } else {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800469 if ((timestamp - common->ani.resetcal_timer) >=
Sujithff37e332008-11-24 12:07:55 +0530470 ATH_RESTART_CALINTERVAL) {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800471 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
472 if (common->ani.caldone)
473 common->ani.resetcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530474 }
475 }
476
477 /* Verify whether we must check ANI */
Luis R. Rodrigueze36b27a2010-06-12 00:33:45 -0400478 if ((timestamp - common->ani.checkani_timer) >=
479 ah->config.ani_poll_interval) {
Sujithff37e332008-11-24 12:07:55 +0530480 aniflag = true;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800481 common->ani.checkani_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530482 }
483
484 /* Skip all processing if there's nothing to do. */
485 if (longcal || shortcal || aniflag) {
486 /* Call ANI routine if necessary */
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200487 if (aniflag) {
488 spin_lock_irqsave(&common->cc_lock, flags);
Vasanthakumar Thiagarajan22e66a42009-08-19 16:23:40 +0530489 ath9k_hw_ani_monitor(ah, ah->curchan);
Felix Fietkau34300982010-10-10 18:21:52 +0200490 ath_update_survey_stats(sc);
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200491 spin_unlock_irqrestore(&common->cc_lock, flags);
492 }
Sujithff37e332008-11-24 12:07:55 +0530493
494 /* Perform calibration if necessary */
495 if (longcal || shortcal) {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800496 common->ani.caldone =
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700497 ath9k_hw_calibrate(ah,
498 ah->curchan,
499 common->rx_chainmask,
500 longcal);
Sujithff37e332008-11-24 12:07:55 +0530501 }
502 }
503
Jouni Malinen1ffc1c62009-05-19 17:01:39 +0300504 ath9k_ps_restore(sc);
505
Sujith20977d32009-02-20 15:13:28 +0530506set_timer:
Sujithff37e332008-11-24 12:07:55 +0530507 /*
508 * Set timer interval based on previous results.
509 * The interval must be the shortest necessary to satisfy ANI,
510 * short calibration and long calibration.
511 */
Sujithaac92072008-12-02 18:37:54 +0530512 cal_interval = ATH_LONG_CALINTERVAL;
Sujith2660b812009-02-09 13:27:26 +0530513 if (sc->sc_ah->config.enable_ani)
Luis R. Rodrigueze36b27a2010-06-12 00:33:45 -0400514 cal_interval = min(cal_interval,
515 (u32)ah->config.ani_poll_interval);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800516 if (!common->ani.caldone)
Sujith20977d32009-02-20 15:13:28 +0530517 cal_interval = min(cal_interval, (u32)short_cal_interval);
Sujithff37e332008-11-24 12:07:55 +0530518
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800519 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200520 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
521 if (!ah->caldata->paprd_done)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400522 ieee80211_queue_work(sc->hw, &sc->paprd_work);
523 else
524 ath_paprd_activate(sc);
525 }
Sujithff37e332008-11-24 12:07:55 +0530526}
527
528/*
529 * Update tx/rx chainmask. For legacy association,
530 * hard code chainmask to 1x1, for 11n association, use
Vasanthakumar Thiagarajanc97c92d2009-01-02 15:35:46 +0530531 * the chainmask configuration, for bt coexistence, use
532 * the chainmask configuration even in legacy mode.
Sujithff37e332008-11-24 12:07:55 +0530533 */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +0200534void ath_update_chainmask(struct ath_softc *sc, int is_ht)
Sujithff37e332008-11-24 12:07:55 +0530535{
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700536 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700537 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700538
Felix Fietkau5ee08652010-07-31 00:11:59 +0200539 if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht ||
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -0700540 (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700541 common->tx_chainmask = ah->caps.tx_chainmask;
542 common->rx_chainmask = ah->caps.rx_chainmask;
Sujithff37e332008-11-24 12:07:55 +0530543 } else {
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700544 common->tx_chainmask = 1;
545 common->rx_chainmask = 1;
Sujithff37e332008-11-24 12:07:55 +0530546 }
547
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700548 ath_print(common, ATH_DBG_CONFIG,
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700549 "tx chmask: %d, rx chmask: %d\n",
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700550 common->tx_chainmask,
551 common->rx_chainmask);
Sujithff37e332008-11-24 12:07:55 +0530552}
553
554static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
555{
556 struct ath_node *an;
557
558 an = (struct ath_node *)sta->drv_priv;
559
Sujith87792ef2009-03-30 15:28:48 +0530560 if (sc->sc_flags & SC_OP_TXAGGR) {
Sujithff37e332008-11-24 12:07:55 +0530561 ath_tx_node_init(sc, an);
Sujith9e98ac62009-07-23 15:32:34 +0530562 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
Sujith87792ef2009-03-30 15:28:48 +0530563 sta->ht_cap.ampdu_factor);
564 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
Senthil Balasubramaniana59b5a52009-07-14 20:17:07 -0400565 an->last_rssi = ATH_RSSI_DUMMY_MARKER;
Sujith87792ef2009-03-30 15:28:48 +0530566 }
Sujithff37e332008-11-24 12:07:55 +0530567}
568
569static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
570{
571 struct ath_node *an = (struct ath_node *)sta->drv_priv;
572
573 if (sc->sc_flags & SC_OP_TXAGGR)
574 ath_tx_node_cleanup(sc, an);
575}
576
Felix Fietkau347809f2010-07-02 00:09:52 +0200577void ath_hw_check(struct work_struct *work)
578{
579 struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
580 int i;
581
582 ath9k_ps_wakeup(sc);
583
584 for (i = 0; i < 3; i++) {
585 if (ath9k_hw_check_alive(sc->sc_ah))
586 goto out;
587
588 msleep(1);
589 }
Felix Fietkaufac6b6a2010-10-23 17:45:38 +0200590 ath_reset(sc, true);
Felix Fietkau347809f2010-07-02 00:09:52 +0200591
592out:
593 ath9k_ps_restore(sc);
594}
595
Sujith55624202010-01-08 10:36:02 +0530596void ath9k_tasklet(unsigned long data)
Sujithff37e332008-11-24 12:07:55 +0530597{
598 struct ath_softc *sc = (struct ath_softc *)data;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700599 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700600 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700601
Sujith17d79042009-02-09 13:27:03 +0530602 u32 status = sc->intrstatus;
Felix Fietkaub5c804752010-04-15 17:38:48 -0400603 u32 rxmask;
Sujithff37e332008-11-24 12:07:55 +0530604
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400605 ath9k_ps_wakeup(sc);
606
Felix Fietkau347809f2010-07-02 00:09:52 +0200607 if (status & ATH9K_INT_FATAL) {
Felix Fietkaufac6b6a2010-10-23 17:45:38 +0200608 ath_reset(sc, true);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400609 ath9k_ps_restore(sc);
Sujithff37e332008-11-24 12:07:55 +0530610 return;
Sujithff37e332008-11-24 12:07:55 +0530611 }
612
Felix Fietkau347809f2010-07-02 00:09:52 +0200613 if (!ath9k_hw_check_alive(ah))
614 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
615
Felix Fietkaub5c804752010-04-15 17:38:48 -0400616 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
617 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
618 ATH9K_INT_RXORN);
619 else
620 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
621
622 if (status & rxmask) {
Luis R. Rodriguezb79b33c2010-10-20 16:07:05 -0700623 spin_lock_bh(&sc->rx.pcu_lock);
Felix Fietkaub5c804752010-04-15 17:38:48 -0400624
625 /* Check for high priority Rx first */
626 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
627 (status & ATH9K_INT_RXHP))
628 ath_rx_tasklet(sc, 0, true);
629
630 ath_rx_tasklet(sc, 0, false);
Luis R. Rodriguezb79b33c2010-10-20 16:07:05 -0700631 spin_unlock_bh(&sc->rx.pcu_lock);
Sujith063d8be2009-03-30 15:28:49 +0530632 }
633
Vasanthakumar Thiagarajane5003242010-04-15 17:39:36 -0400634 if (status & ATH9K_INT_TX) {
635 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
636 ath_tx_edma_tasklet(sc);
637 else
638 ath_tx_tasklet(sc);
639 }
Sujith063d8be2009-03-30 15:28:49 +0530640
Gabor Juhos96148322009-07-24 17:27:21 +0200641 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
Jouni Malinen54ce8462009-05-19 17:01:40 +0300642 /*
643 * TSF sync does not look correct; remain awake to sync with
644 * the next Beacon.
645 */
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700646 ath_print(common, ATH_DBG_PS,
647 "TSFOOR - Sync with next Beacon\n");
Sujith1b04b932010-01-08 10:36:05 +0530648 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
Jouni Malinen54ce8462009-05-19 17:01:40 +0300649 }
650
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -0700651 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Vasanthakumar Thiagarajanebb8e1d2009-09-01 17:46:32 +0530652 if (status & ATH9K_INT_GENTIMER)
653 ath_gen_timer_isr(sc->sc_ah);
654
Sujithff37e332008-11-24 12:07:55 +0530655 /* re-enable hardware interrupt */
Pavel Roskin30691682010-03-31 18:05:31 -0400656 ath9k_hw_set_interrupts(ah, ah->imask);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400657 ath9k_ps_restore(sc);
Sujithff37e332008-11-24 12:07:55 +0530658}
659
Gabor Juhos6baff7f2009-01-14 20:17:06 +0100660irqreturn_t ath_isr(int irq, void *dev)
Sujithff37e332008-11-24 12:07:55 +0530661{
Sujith063d8be2009-03-30 15:28:49 +0530662#define SCHED_INTR ( \
663 ATH9K_INT_FATAL | \
664 ATH9K_INT_RXORN | \
665 ATH9K_INT_RXEOL | \
666 ATH9K_INT_RX | \
Felix Fietkaub5c804752010-04-15 17:38:48 -0400667 ATH9K_INT_RXLP | \
668 ATH9K_INT_RXHP | \
Sujith063d8be2009-03-30 15:28:49 +0530669 ATH9K_INT_TX | \
670 ATH9K_INT_BMISS | \
671 ATH9K_INT_CST | \
Vasanthakumar Thiagarajanebb8e1d2009-09-01 17:46:32 +0530672 ATH9K_INT_TSFOOR | \
673 ATH9K_INT_GENTIMER)
Sujith063d8be2009-03-30 15:28:49 +0530674
Sujithff37e332008-11-24 12:07:55 +0530675 struct ath_softc *sc = dev;
Sujithcbe61d82009-02-09 13:27:12 +0530676 struct ath_hw *ah = sc->sc_ah;
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200677 struct ath_common *common = ath9k_hw_common(ah);
Sujithff37e332008-11-24 12:07:55 +0530678 enum ath9k_int status;
679 bool sched = false;
680
Sujith063d8be2009-03-30 15:28:49 +0530681 /*
682 * The hardware is not ready/present, don't
683 * touch anything. Note this can happen early
684 * on if the IRQ is shared.
685 */
686 if (sc->sc_flags & SC_OP_INVALID)
687 return IRQ_NONE;
Sujithff37e332008-11-24 12:07:55 +0530688
Sujithff37e332008-11-24 12:07:55 +0530689
Sujith063d8be2009-03-30 15:28:49 +0530690 /* shared irq, not for us */
Sujithff37e332008-11-24 12:07:55 +0530691
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400692 if (!ath9k_hw_intrpend(ah))
Sujith063d8be2009-03-30 15:28:49 +0530693 return IRQ_NONE;
Sujithff37e332008-11-24 12:07:55 +0530694
Sujith063d8be2009-03-30 15:28:49 +0530695 /*
696 * Figure out the reason(s) for the interrupt. Note
697 * that the hal returns a pseudo-ISR that may include
698 * bits we haven't explicitly enabled so we mask the
699 * value to insure we only process bits we requested.
700 */
701 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
Pavel Roskin30691682010-03-31 18:05:31 -0400702 status &= ah->imask; /* discard unasked-for bits */
Sujith063d8be2009-03-30 15:28:49 +0530703
704 /*
705 * If there are no status bits set, then this interrupt was not
706 * for me (should have been caught above).
707 */
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400708 if (!status)
Sujith063d8be2009-03-30 15:28:49 +0530709 return IRQ_NONE;
Sujith063d8be2009-03-30 15:28:49 +0530710
711 /* Cache the status */
712 sc->intrstatus = status;
713
714 if (status & SCHED_INTR)
715 sched = true;
716
717 /*
718 * If a FATAL or RXORN interrupt is received, we have to reset the
719 * chip immediately.
720 */
Felix Fietkaub5c804752010-04-15 17:38:48 -0400721 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
722 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
Sujith063d8be2009-03-30 15:28:49 +0530723 goto chip_reset;
724
Luis R. Rodriguez08578b82010-05-13 13:33:44 -0400725 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
726 (status & ATH9K_INT_BB_WATCHDOG)) {
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200727
728 spin_lock(&common->cc_lock);
729 ath_hw_cycle_counters_update(common);
Luis R. Rodriguez08578b82010-05-13 13:33:44 -0400730 ar9003_hw_bb_watchdog_dbg_info(ah);
Felix Fietkaub5bfc562010-10-08 22:13:53 +0200731 spin_unlock(&common->cc_lock);
732
Luis R. Rodriguez08578b82010-05-13 13:33:44 -0400733 goto chip_reset;
734 }
735
Sujith063d8be2009-03-30 15:28:49 +0530736 if (status & ATH9K_INT_SWBA)
737 tasklet_schedule(&sc->bcon_tasklet);
738
739 if (status & ATH9K_INT_TXURN)
740 ath9k_hw_updatetxtriglevel(ah, true);
741
Felix Fietkaub5c804752010-04-15 17:38:48 -0400742 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
743 if (status & ATH9K_INT_RXEOL) {
744 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
745 ath9k_hw_set_interrupts(ah, ah->imask);
746 }
747 }
748
Sujith063d8be2009-03-30 15:28:49 +0530749 if (status & ATH9K_INT_MIB) {
750 /*
751 * Disable interrupts until we service the MIB
752 * interrupt; otherwise it will continue to
753 * fire.
754 */
755 ath9k_hw_set_interrupts(ah, 0);
756 /*
757 * Let the hal handle the event. We assume
758 * it will clear whatever condition caused
759 * the interrupt.
760 */
Felix Fietkau88eac2d2010-10-12 16:08:03 +0200761 spin_lock(&common->cc_lock);
Felix Fietkaubfc472b2010-10-04 20:09:48 +0200762 ath9k_hw_proc_mib_event(ah);
Felix Fietkau88eac2d2010-10-12 16:08:03 +0200763 spin_unlock(&common->cc_lock);
Pavel Roskin30691682010-03-31 18:05:31 -0400764 ath9k_hw_set_interrupts(ah, ah->imask);
Sujith063d8be2009-03-30 15:28:49 +0530765 }
766
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400767 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
768 if (status & ATH9K_INT_TIM_TIMER) {
Sujith063d8be2009-03-30 15:28:49 +0530769 /* Clear RxAbort bit so that we can
770 * receive frames */
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700771 ath9k_setpower(sc, ATH9K_PM_AWAKE);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400772 ath9k_hw_setrxabort(sc->sc_ah, 0);
Sujith1b04b932010-01-08 10:36:05 +0530773 sc->ps_flags |= PS_WAIT_FOR_BEACON;
Sujith063d8be2009-03-30 15:28:49 +0530774 }
Sujith063d8be2009-03-30 15:28:49 +0530775
776chip_reset:
777
Sujith817e11d2008-12-07 21:42:44 +0530778 ath_debug_stat_interrupt(sc, status);
779
Sujithff37e332008-11-24 12:07:55 +0530780 if (sched) {
781 /* turn off every interrupt except SWBA */
Pavel Roskin30691682010-03-31 18:05:31 -0400782 ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
Sujithff37e332008-11-24 12:07:55 +0530783 tasklet_schedule(&sc->intr_tq);
784 }
785
786 return IRQ_HANDLED;
Sujith063d8be2009-03-30 15:28:49 +0530787
788#undef SCHED_INTR
Sujithff37e332008-11-24 12:07:55 +0530789}
790
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700791static u32 ath_get_extchanmode(struct ath_softc *sc,
Sujith99405f92008-11-24 12:08:35 +0530792 struct ieee80211_channel *chan,
Sujith094d05d2008-12-12 11:57:43 +0530793 enum nl80211_channel_type channel_type)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700794{
795 u32 chanmode = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700796
797 switch (chan->band) {
798 case IEEE80211_BAND_2GHZ:
Sujith094d05d2008-12-12 11:57:43 +0530799 switch(channel_type) {
800 case NL80211_CHAN_NO_HT:
801 case NL80211_CHAN_HT20:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700802 chanmode = CHANNEL_G_HT20;
Sujith094d05d2008-12-12 11:57:43 +0530803 break;
804 case NL80211_CHAN_HT40PLUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700805 chanmode = CHANNEL_G_HT40PLUS;
Sujith094d05d2008-12-12 11:57:43 +0530806 break;
807 case NL80211_CHAN_HT40MINUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700808 chanmode = CHANNEL_G_HT40MINUS;
Sujith094d05d2008-12-12 11:57:43 +0530809 break;
810 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700811 break;
812 case IEEE80211_BAND_5GHZ:
Sujith094d05d2008-12-12 11:57:43 +0530813 switch(channel_type) {
814 case NL80211_CHAN_NO_HT:
815 case NL80211_CHAN_HT20:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700816 chanmode = CHANNEL_A_HT20;
Sujith094d05d2008-12-12 11:57:43 +0530817 break;
818 case NL80211_CHAN_HT40PLUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700819 chanmode = CHANNEL_A_HT40PLUS;
Sujith094d05d2008-12-12 11:57:43 +0530820 break;
821 case NL80211_CHAN_HT40MINUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700822 chanmode = CHANNEL_A_HT40MINUS;
Sujith094d05d2008-12-12 11:57:43 +0530823 break;
824 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700825 break;
826 default:
827 break;
828 }
829
830 return chanmode;
831}
832
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530833static void ath9k_bss_assoc_info(struct ath_softc *sc,
Sujith5640b082008-10-29 10:16:06 +0530834 struct ieee80211_vif *vif,
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530835 struct ieee80211_bss_conf *bss_conf)
836{
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -0700837 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700838 struct ath_common *common = ath9k_hw_common(ah);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530839
840 if (bss_conf->assoc) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700841 ath_print(common, ATH_DBG_CONFIG,
842 "Bss Info ASSOC %d, bssid: %pM\n",
843 bss_conf->aid, common->curbssid);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530844
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530845 /* New association, store aid */
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700846 common->curaid = bss_conf->aid;
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -0700847 ath9k_hw_write_associd(ah);
Jouni Malinenccdfeab2009-05-20 21:59:08 +0300848
Senthil Balasubramanian2664f202009-06-24 18:56:39 +0530849 /*
850 * Request a re-configuration of Beacon related timers
851 * on the receipt of the first Beacon frame (i.e.,
852 * after time sync with the AP).
853 */
Sujith1b04b932010-01-08 10:36:05 +0530854 sc->ps_flags |= PS_BEACON_SYNC;
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530855
856 /* Configure the beacon */
Jouni Malinen2c3db3d2009-03-03 19:23:26 +0200857 ath_beacon_config(sc, vif);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530858
859 /* Reset rssi stats */
Vasanthakumar Thiagarajan22e66a42009-08-19 16:23:40 +0530860 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530861
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -0700862 sc->sc_flags |= SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800863 ath_start_ani(common);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530864 } else {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700865 ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700866 common->curaid = 0;
Senthil Balasubramanianf38faa32009-06-24 18:56:40 +0530867 /* Stop ANI */
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -0700868 sc->sc_flags &= ~SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800869 del_timer_sync(&common->ani.timer);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530870 }
871}
872
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800873void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530874{
Sujithcbe61d82009-02-09 13:27:12 +0530875 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700876 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800877 struct ieee80211_channel *channel = hw->conf.channel;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800878 int r;
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530879
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530880 ath9k_ps_wakeup(sc);
Vivek Natarajan93b1b372009-09-17 09:24:58 +0530881 ath9k_hw_configpcipowersave(ah, 0, 0);
Sujithd2f5b3a2009-04-13 21:56:25 +0530882
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530883 if (!ah->curchan)
884 ah->curchan = ath_get_curchannel(sc, sc->hw);
885
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700886 spin_lock_bh(&sc->rx.pcu_lock);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530887 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200888 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800889 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700890 ath_print(common, ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500891 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700892 "reset status %d\n",
893 channel->center_freq, r);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530894 }
895 spin_unlock_bh(&sc->sc_resetlock);
896
897 ath_update_txpow(sc);
898 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700899 ath_print(common, ATH_DBG_FATAL,
900 "Unable to restart recv logic\n");
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700901 spin_unlock_bh(&sc->rx.pcu_lock);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530902 return;
903 }
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700904 spin_unlock_bh(&sc->rx.pcu_lock);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530905
906 if (sc->sc_flags & SC_OP_BEACONS)
Jouni Malinen2c3db3d2009-03-03 19:23:26 +0200907 ath_beacon_config(sc, NULL); /* restart beacons */
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530908
909 /* Re-Enable interrupts */
Pavel Roskin30691682010-03-31 18:05:31 -0400910 ath9k_hw_set_interrupts(ah, ah->imask);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530911
912 /* Enable LED */
Vivek Natarajan08fc5c12009-08-14 11:30:52 +0530913 ath9k_hw_cfg_output(ah, ah->led_pin,
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530914 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
Vivek Natarajan08fc5c12009-08-14 11:30:52 +0530915 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530916
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800917 ieee80211_wake_queues(hw);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530918 ath9k_ps_restore(sc);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530919}
920
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800921void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530922{
Sujithcbe61d82009-02-09 13:27:12 +0530923 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800924 struct ieee80211_channel *channel = hw->conf.channel;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800925 int r;
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530926
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530927 ath9k_ps_wakeup(sc);
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800928 ieee80211_stop_queues(hw);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530929
Vivek Natarajan982723d2010-06-23 12:08:29 +0530930 /*
931 * Keep the LED on when the radio is disabled
932 * during idle unassociated state.
933 */
934 if (!sc->ps_idle) {
935 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
936 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
937 }
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530938
939 /* Disable interrupts */
940 ath9k_hw_set_interrupts(ah, 0);
941
Sujith043a0402009-01-16 21:38:47 +0530942 ath_drain_all_txq(sc, false); /* clear pending tx frames */
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700943
944 spin_lock_bh(&sc->rx.pcu_lock);
945
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530946 ath_stoprecv(sc); /* turn off frame recv */
947 ath_flushrecv(sc); /* flush recv queue */
948
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530949 if (!ah->curchan)
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800950 ah->curchan = ath_get_curchannel(sc, hw);
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530951
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530952 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200953 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800954 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700955 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500956 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700957 "reset status %d\n",
958 channel->center_freq, r);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530959 }
960 spin_unlock_bh(&sc->sc_resetlock);
961
962 ath9k_hw_phy_disable(ah);
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700963
964 spin_unlock_bh(&sc->rx.pcu_lock);
965
Vivek Natarajan93b1b372009-09-17 09:24:58 +0530966 ath9k_hw_configpcipowersave(ah, 1, 1);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530967 ath9k_ps_restore(sc);
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700968 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530969}
970
Sujithff37e332008-11-24 12:07:55 +0530971int ath_reset(struct ath_softc *sc, bool retry_tx)
972{
Sujithcbe61d82009-02-09 13:27:12 +0530973 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700974 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez030bb492008-12-23 15:58:37 -0800975 struct ieee80211_hw *hw = sc->hw;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800976 int r;
Sujithff37e332008-11-24 12:07:55 +0530977
Sujith2ab81d42009-12-14 16:34:56 +0530978 /* Stop ANI */
979 del_timer_sync(&common->ani.timer);
980
Sujithcc9c3782010-01-08 10:36:09 +0530981 ieee80211_stop_queues(hw);
982
Sujithff37e332008-11-24 12:07:55 +0530983 ath9k_hw_set_interrupts(ah, 0);
Sujith043a0402009-01-16 21:38:47 +0530984 ath_drain_all_txq(sc, retry_tx);
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -0700985
986 spin_lock_bh(&sc->rx.pcu_lock);
987
Sujithff37e332008-11-24 12:07:55 +0530988 ath_stoprecv(sc);
989 ath_flushrecv(sc);
990
991 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200992 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800993 if (r)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700994 ath_print(common, ATH_DBG_FATAL,
995 "Unable to reset hardware; reset status %d\n", r);
Sujithff37e332008-11-24 12:07:55 +0530996 spin_unlock_bh(&sc->sc_resetlock);
997
998 if (ath_startrecv(sc) != 0)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700999 ath_print(common, ATH_DBG_FATAL,
1000 "Unable to start recv logic\n");
Sujithff37e332008-11-24 12:07:55 +05301001
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001002 spin_unlock_bh(&sc->rx.pcu_lock);
1003
Sujithff37e332008-11-24 12:07:55 +05301004 /*
1005 * We may be doing a reset in response to a request
1006 * that changes the channel so update any state that
1007 * might change as a result.
1008 */
Sujithff37e332008-11-24 12:07:55 +05301009 ath_update_txpow(sc);
1010
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -04001011 if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001012 ath_beacon_config(sc, NULL); /* restart beacons */
Sujithff37e332008-11-24 12:07:55 +05301013
Pavel Roskin30691682010-03-31 18:05:31 -04001014 ath9k_hw_set_interrupts(ah, ah->imask);
Sujithff37e332008-11-24 12:07:55 +05301015
1016 if (retry_tx) {
1017 int i;
1018 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1019 if (ATH_TXQ_SETUP(sc, i)) {
Sujithb77f4832008-12-07 21:44:03 +05301020 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1021 ath_txq_schedule(sc, &sc->tx.txq[i]);
1022 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
Sujithff37e332008-11-24 12:07:55 +05301023 }
1024 }
1025 }
1026
Sujithcc9c3782010-01-08 10:36:09 +05301027 ieee80211_wake_queues(hw);
1028
Sujith2ab81d42009-12-14 16:34:56 +05301029 /* Start ANI */
1030 ath_start_ani(common);
1031
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -08001032 return r;
Sujithff37e332008-11-24 12:07:55 +05301033}
1034
Felix Fietkauebe297c2010-06-12 00:33:53 -04001035static int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
Sujithff37e332008-11-24 12:07:55 +05301036{
1037 int qnum;
1038
1039 switch (queue) {
1040 case 0:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001041 qnum = sc->tx.hwq_map[WME_AC_VO];
Sujithff37e332008-11-24 12:07:55 +05301042 break;
1043 case 1:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001044 qnum = sc->tx.hwq_map[WME_AC_VI];
Sujithff37e332008-11-24 12:07:55 +05301045 break;
1046 case 2:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001047 qnum = sc->tx.hwq_map[WME_AC_BE];
Sujithff37e332008-11-24 12:07:55 +05301048 break;
1049 case 3:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001050 qnum = sc->tx.hwq_map[WME_AC_BK];
Sujithff37e332008-11-24 12:07:55 +05301051 break;
1052 default:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001053 qnum = sc->tx.hwq_map[WME_AC_BE];
Sujithff37e332008-11-24 12:07:55 +05301054 break;
1055 }
1056
1057 return qnum;
1058}
1059
1060int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
1061{
1062 int qnum;
1063
1064 switch (queue) {
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001065 case WME_AC_VO:
Sujithff37e332008-11-24 12:07:55 +05301066 qnum = 0;
1067 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001068 case WME_AC_VI:
Sujithff37e332008-11-24 12:07:55 +05301069 qnum = 1;
1070 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001071 case WME_AC_BE:
Sujithff37e332008-11-24 12:07:55 +05301072 qnum = 2;
1073 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001074 case WME_AC_BK:
Sujithff37e332008-11-24 12:07:55 +05301075 qnum = 3;
1076 break;
1077 default:
1078 qnum = -1;
1079 break;
1080 }
1081
1082 return qnum;
1083}
1084
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001085/* XXX: Remove me once we don't depend on ath9k_channel for all
1086 * this redundant data */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001087void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
1088 struct ath9k_channel *ichan)
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001089{
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001090 struct ieee80211_channel *chan = hw->conf.channel;
1091 struct ieee80211_conf *conf = &hw->conf;
1092
1093 ichan->channel = chan->center_freq;
1094 ichan->chan = chan;
1095
1096 if (chan->band == IEEE80211_BAND_2GHZ) {
1097 ichan->chanmode = CHANNEL_G;
Sujith88132622009-09-03 12:08:53 +05301098 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001099 } else {
1100 ichan->chanmode = CHANNEL_A;
1101 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
1102 }
1103
Luis R. Rodriguez25c56ee2009-09-13 23:04:44 -07001104 if (conf_is_ht(conf))
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001105 ichan->chanmode = ath_get_extchanmode(sc, chan,
1106 conf->channel_type);
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001107}
1108
Sujithff37e332008-11-24 12:07:55 +05301109/**********************/
1110/* mac80211 callbacks */
1111/**********************/
1112
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001113static int ath9k_start(struct ieee80211_hw *hw)
1114{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001115 struct ath_wiphy *aphy = hw->priv;
1116 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001117 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001118 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001119 struct ieee80211_channel *curchan = hw->conf.channel;
Sujithff37e332008-11-24 12:07:55 +05301120 struct ath9k_channel *init_channel;
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301121 int r;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001122
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001123 ath_print(common, ATH_DBG_CONFIG,
1124 "Starting driver with initial channel: %d MHz\n",
1125 curchan->center_freq);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001126
Sujith141b38b2009-02-04 08:10:07 +05301127 mutex_lock(&sc->mutex);
1128
Jouni Malinen9580a222009-03-03 19:23:33 +02001129 if (ath9k_wiphy_started(sc)) {
1130 if (sc->chan_idx == curchan->hw_value) {
1131 /*
1132 * Already on the operational channel, the new wiphy
1133 * can be marked active.
1134 */
1135 aphy->state = ATH_WIPHY_ACTIVE;
1136 ieee80211_wake_queues(hw);
1137 } else {
1138 /*
1139 * Another wiphy is on another channel, start the new
1140 * wiphy in paused state.
1141 */
1142 aphy->state = ATH_WIPHY_PAUSED;
1143 ieee80211_stop_queues(hw);
1144 }
1145 mutex_unlock(&sc->mutex);
1146 return 0;
1147 }
1148 aphy->state = ATH_WIPHY_ACTIVE;
1149
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001150 /* setup initial channel */
1151
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301152 sc->chan_idx = curchan->hw_value;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001153
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301154 init_channel = ath_get_curchannel(sc, hw);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001155
Sujithff37e332008-11-24 12:07:55 +05301156 /* Reset SERDES registers */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001157 ath9k_hw_configpcipowersave(ah, 0, 0);
Sujithff37e332008-11-24 12:07:55 +05301158
1159 /*
1160 * The basic interface to setting the hardware in a good
1161 * state is ``reset''. On return the hardware is known to
1162 * be powered up and with interrupts disabled. This must
1163 * be followed by initialization of the appropriate bits
1164 * and then setup of the interrupt mask.
1165 */
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001166 spin_lock_bh(&sc->rx.pcu_lock);
Sujithff37e332008-11-24 12:07:55 +05301167 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +02001168 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -08001169 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001170 ath_print(common, ATH_DBG_FATAL,
1171 "Unable to reset hardware; reset status %d "
1172 "(freq %u MHz)\n", r,
1173 curchan->center_freq);
Sujithff37e332008-11-24 12:07:55 +05301174 spin_unlock_bh(&sc->sc_resetlock);
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001175 spin_unlock_bh(&sc->rx.pcu_lock);
Sujith141b38b2009-02-04 08:10:07 +05301176 goto mutex_unlock;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001177 }
Sujithff37e332008-11-24 12:07:55 +05301178 spin_unlock_bh(&sc->sc_resetlock);
1179
1180 /*
1181 * This is needed only to setup initial state
1182 * but it's best done after a reset.
1183 */
1184 ath_update_txpow(sc);
1185
1186 /*
1187 * Setup the hardware after reset:
1188 * The receive engine is set going.
1189 * Frame transmit is handled entirely
1190 * in the frame output path; there's nothing to do
1191 * here except setup the interrupt mask.
1192 */
1193 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001194 ath_print(common, ATH_DBG_FATAL,
1195 "Unable to start recv logic\n");
Sujith141b38b2009-02-04 08:10:07 +05301196 r = -EIO;
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001197 spin_unlock_bh(&sc->rx.pcu_lock);
Sujith141b38b2009-02-04 08:10:07 +05301198 goto mutex_unlock;
Sujithff37e332008-11-24 12:07:55 +05301199 }
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001200 spin_unlock_bh(&sc->rx.pcu_lock);
Sujithff37e332008-11-24 12:07:55 +05301201
1202 /* Setup our intr mask. */
Felix Fietkaub5c804752010-04-15 17:38:48 -04001203 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1204 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1205 ATH9K_INT_GLOBAL;
1206
1207 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
Luis R. Rodriguez08578b82010-05-13 13:33:44 -04001208 ah->imask |= ATH9K_INT_RXHP |
1209 ATH9K_INT_RXLP |
1210 ATH9K_INT_BB_WATCHDOG;
Felix Fietkaub5c804752010-04-15 17:38:48 -04001211 else
1212 ah->imask |= ATH9K_INT_RX;
Sujithff37e332008-11-24 12:07:55 +05301213
Felix Fietkau364734f2010-09-14 20:22:44 +02001214 ah->imask |= ATH9K_INT_GTT;
Sujithff37e332008-11-24 12:07:55 +05301215
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001216 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
Pavel Roskin30691682010-03-31 18:05:31 -04001217 ah->imask |= ATH9K_INT_CST;
Sujithff37e332008-11-24 12:07:55 +05301218
Sujithff37e332008-11-24 12:07:55 +05301219 sc->sc_flags &= ~SC_OP_INVALID;
Rajkumar Manoharan5f841b42010-10-27 18:31:15 +05301220 sc->sc_ah->is_monitoring = false;
Sujithff37e332008-11-24 12:07:55 +05301221
1222 /* Disable BMISS interrupt when we're not associated */
Pavel Roskin30691682010-03-31 18:05:31 -04001223 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1224 ath9k_hw_set_interrupts(ah, ah->imask);
Sujithff37e332008-11-24 12:07:55 +05301225
Jouni Malinenbce048d2009-03-03 19:23:28 +02001226 ieee80211_wake_queues(hw);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001227
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001228 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
Senthil Balasubramanian164ace32009-07-14 20:17:09 -04001229
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001230 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1231 !ah->btcoex_hw.enabled) {
Luis R. Rodriguez5e197292009-09-09 15:15:55 -07001232 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1233 AR_STOMP_LOW_WLAN_WGHT);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001234 ath9k_hw_btcoex_enable(ah);
Vasanthakumar Thiagarajanf985ad12009-08-26 21:08:43 +05301235
Luis R. Rodriguez5bb12792009-09-14 00:55:09 -07001236 if (common->bus_ops->bt_coex_prep)
1237 common->bus_ops->bt_coex_prep(common);
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001238 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Luis R. Rodriguez75d78392009-09-09 04:00:10 -07001239 ath9k_btcoex_timer_resume(sc);
Vasanthakumar Thiagarajan17739122009-08-26 21:08:50 +05301240 }
1241
Sujith141b38b2009-02-04 08:10:07 +05301242mutex_unlock:
1243 mutex_unlock(&sc->mutex);
1244
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -08001245 return r;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001246}
1247
1248static int ath9k_tx(struct ieee80211_hw *hw,
1249 struct sk_buff *skb)
1250{
Jouni Malinen147583c2008-08-11 14:01:50 +03001251 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Jouni Malinenbce048d2009-03-03 19:23:28 +02001252 struct ath_wiphy *aphy = hw->priv;
1253 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001254 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Sujith528f0c62008-10-29 10:14:26 +05301255 struct ath_tx_control txctl;
Benoit Papillault1bc14882009-11-24 15:49:18 +01001256 int padpos, padsize;
1257 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
Felix Fietkau84642d62010-06-01 21:33:13 +02001258 int qnum;
Sujith528f0c62008-10-29 10:14:26 +05301259
Jouni Malinen8089cc42009-03-03 19:23:38 +02001260 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001261 ath_print(common, ATH_DBG_XMIT,
1262 "ath9k: %s: TX in unexpected wiphy state "
1263 "%d\n", wiphy_name(hw->wiphy), aphy->state);
Jouni Malinenee166a02009-03-03 19:23:36 +02001264 goto exit;
1265 }
1266
Gabor Juhos96148322009-07-24 17:27:21 +02001267 if (sc->ps_enabled) {
Jouni Malinendc8c4582009-05-19 17:01:42 +03001268 /*
1269 * mac80211 does not set PM field for normal data frames, so we
1270 * need to update that based on the current PS mode.
1271 */
1272 if (ieee80211_is_data(hdr->frame_control) &&
1273 !ieee80211_is_nullfunc(hdr->frame_control) &&
1274 !ieee80211_has_pm(hdr->frame_control)) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001275 ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
1276 "while in PS mode\n");
Jouni Malinendc8c4582009-05-19 17:01:42 +03001277 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1278 }
1279 }
1280
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001281 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1282 /*
1283 * We are using PS-Poll and mac80211 can request TX while in
1284 * power save mode. Need to wake up hardware for the TX to be
1285 * completed and if needed, also for RX of buffered frames.
1286 */
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001287 ath9k_ps_wakeup(sc);
Vasanthakumar Thiagarajanfdf76622010-05-17 18:57:55 -07001288 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1289 ath9k_hw_setrxabort(sc->sc_ah, 0);
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001290 if (ieee80211_is_pspoll(hdr->frame_control)) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001291 ath_print(common, ATH_DBG_PS,
1292 "Sending PS-Poll to pick a buffered frame\n");
Sujith1b04b932010-01-08 10:36:05 +05301293 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001294 } else {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001295 ath_print(common, ATH_DBG_PS,
1296 "Wake up to complete TX\n");
Sujith1b04b932010-01-08 10:36:05 +05301297 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001298 }
1299 /*
1300 * The actual restore operation will happen only after
1301 * the sc_flags bit is cleared. We are just dropping
1302 * the ps_usecount here.
1303 */
1304 ath9k_ps_restore(sc);
1305 }
1306
Sujith528f0c62008-10-29 10:14:26 +05301307 memset(&txctl, 0, sizeof(struct ath_tx_control));
Jouni Malinen147583c2008-08-11 14:01:50 +03001308
1309 /*
1310 * As a temporary workaround, assign seq# here; this will likely need
1311 * to be cleaned up to work better with Beacon transmission and virtual
1312 * BSSes.
1313 */
1314 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
Jouni Malinen147583c2008-08-11 14:01:50 +03001315 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
Sujithb77f4832008-12-07 21:44:03 +05301316 sc->tx.seq_no += 0x10;
Jouni Malinen147583c2008-08-11 14:01:50 +03001317 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
Sujithb77f4832008-12-07 21:44:03 +05301318 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
Jouni Malinen147583c2008-08-11 14:01:50 +03001319 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001320
1321 /* Add the padding after the header if this is not already done */
Benoit Papillault1bc14882009-11-24 15:49:18 +01001322 padpos = ath9k_cmn_padpos(hdr->frame_control);
1323 padsize = padpos & 3;
1324 if (padsize && skb->len>padpos) {
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001325 if (skb_headroom(skb) < padsize)
1326 return -1;
1327 skb_push(skb, padsize);
Benoit Papillault1bc14882009-11-24 15:49:18 +01001328 memmove(skb->data, skb->data + padsize, padpos);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001329 }
1330
Felix Fietkau84642d62010-06-01 21:33:13 +02001331 qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
1332 txctl.txq = &sc->tx.txq[qnum];
Sujith528f0c62008-10-29 10:14:26 +05301333
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001334 ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001335
Jouni Malinenc52f33d2009-03-03 19:23:29 +02001336 if (ath_tx_start(hw, skb, &txctl) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001337 ath_print(common, ATH_DBG_XMIT, "TX failed\n");
Sujith528f0c62008-10-29 10:14:26 +05301338 goto exit;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001339 }
1340
1341 return 0;
Sujith528f0c62008-10-29 10:14:26 +05301342exit:
1343 dev_kfree_skb_any(skb);
1344 return 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001345}
1346
1347static void ath9k_stop(struct ieee80211_hw *hw)
1348{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001349 struct ath_wiphy *aphy = hw->priv;
1350 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001351 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001352 struct ath_common *common = ath9k_hw_common(ah);
Rajkumar Manoharan447a42c2010-07-08 12:12:29 +05301353 int i;
Sujith9c84b792008-10-29 10:17:13 +05301354
Sujith4c483812009-08-18 10:51:52 +05301355 mutex_lock(&sc->mutex);
1356
Jouni Malinen9580a222009-03-03 19:23:33 +02001357 aphy->state = ATH_WIPHY_INACTIVE;
1358
Vivek Natarajan9a75c2f2010-06-22 11:52:37 +05301359 if (led_blink)
1360 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1361
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001362 cancel_delayed_work_sync(&sc->tx_complete_work);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -04001363 cancel_work_sync(&sc->paprd_work);
Felix Fietkau347809f2010-07-02 00:09:52 +02001364 cancel_work_sync(&sc->hw_check_work);
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001365
Rajkumar Manoharan447a42c2010-07-08 12:12:29 +05301366 for (i = 0; i < sc->num_sec_wiphy; i++) {
1367 if (sc->sec_wiphy[i])
1368 break;
1369 }
1370
1371 if (i == sc->num_sec_wiphy) {
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001372 cancel_delayed_work_sync(&sc->wiphy_work);
1373 cancel_work_sync(&sc->chan_work);
1374 }
1375
Sujith9c84b792008-10-29 10:17:13 +05301376 if (sc->sc_flags & SC_OP_INVALID) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001377 ath_print(common, ATH_DBG_ANY, "Device not present\n");
Sujith4c483812009-08-18 10:51:52 +05301378 mutex_unlock(&sc->mutex);
Sujith9c84b792008-10-29 10:17:13 +05301379 return;
1380 }
1381
Jouni Malinen9580a222009-03-03 19:23:33 +02001382 if (ath9k_wiphy_started(sc)) {
1383 mutex_unlock(&sc->mutex);
1384 return; /* another wiphy still in use */
1385 }
1386
Sujith3867cf62009-12-23 20:03:27 -05001387 /* Ensure HW is awake when we try to shut it down. */
1388 ath9k_ps_wakeup(sc);
1389
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001390 if (ah->btcoex_hw.enabled) {
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001391 ath9k_hw_btcoex_disable(ah);
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001392 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Luis R. Rodriguez75d78392009-09-09 04:00:10 -07001393 ath9k_btcoex_timer_pause(sc);
Vasanthakumar Thiagarajan17739122009-08-26 21:08:50 +05301394 }
1395
Sujithff37e332008-11-24 12:07:55 +05301396 /* make sure h/w will not generate any interrupt
1397 * before setting the invalid flag. */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001398 ath9k_hw_set_interrupts(ah, 0);
Sujithff37e332008-11-24 12:07:55 +05301399
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001400 spin_lock_bh(&sc->rx.pcu_lock);
Sujithff37e332008-11-24 12:07:55 +05301401 if (!(sc->sc_flags & SC_OP_INVALID)) {
Sujith043a0402009-01-16 21:38:47 +05301402 ath_drain_all_txq(sc, false);
Sujithff37e332008-11-24 12:07:55 +05301403 ath_stoprecv(sc);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001404 ath9k_hw_phy_disable(ah);
Sujithff37e332008-11-24 12:07:55 +05301405 } else
Sujithb77f4832008-12-07 21:44:03 +05301406 sc->rx.rxlink = NULL;
Luis R. Rodriguez5e848f72010-10-20 16:07:06 -07001407 spin_unlock_bh(&sc->rx.pcu_lock);
Sujithff37e332008-11-24 12:07:55 +05301408
Sujithff37e332008-11-24 12:07:55 +05301409 /* disable HAL and put h/w to sleep */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001410 ath9k_hw_disable(ah);
1411 ath9k_hw_configpcipowersave(ah, 1, 1);
Sujith3867cf62009-12-23 20:03:27 -05001412 ath9k_ps_restore(sc);
1413
1414 /* Finally, put the chip in FULL SLEEP mode */
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -07001415 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
Sujithff37e332008-11-24 12:07:55 +05301416
1417 sc->sc_flags |= SC_OP_INVALID;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001418
Sujith141b38b2009-02-04 08:10:07 +05301419 mutex_unlock(&sc->mutex);
1420
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001421 ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001422}
1423
1424static int ath9k_add_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001425 struct ieee80211_vif *vif)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001426{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001427 struct ath_wiphy *aphy = hw->priv;
1428 struct ath_softc *sc = aphy->sc;
Pavel Roskin30691682010-03-31 18:05:31 -04001429 struct ath_hw *ah = sc->sc_ah;
1430 struct ath_common *common = ath9k_hw_common(ah);
Johannes Berg1ed32e42009-12-23 13:15:45 +01001431 struct ath_vif *avp = (void *)vif->drv_priv;
Colin McCabed97809d2008-12-01 13:38:55 -08001432 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001433 int ret = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001434
Sujith141b38b2009-02-04 08:10:07 +05301435 mutex_lock(&sc->mutex);
1436
Johannes Berg1ed32e42009-12-23 13:15:45 +01001437 switch (vif->type) {
Johannes Berg05c914f2008-09-11 00:01:58 +02001438 case NL80211_IFTYPE_STATION:
Colin McCabed97809d2008-12-01 13:38:55 -08001439 ic_opmode = NL80211_IFTYPE_STATION;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001440 break;
Bill Jordane51f3ef2010-10-01 11:20:39 -04001441 case NL80211_IFTYPE_WDS:
1442 ic_opmode = NL80211_IFTYPE_WDS;
1443 break;
Johannes Berg05c914f2008-09-11 00:01:58 +02001444 case NL80211_IFTYPE_ADHOC:
Johannes Berg05c914f2008-09-11 00:01:58 +02001445 case NL80211_IFTYPE_AP:
Pat Erley9cb54122009-03-20 22:59:59 -04001446 case NL80211_IFTYPE_MESH_POINT:
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001447 if (sc->nbcnvifs >= ATH_BCBUF) {
1448 ret = -ENOBUFS;
1449 goto out;
1450 }
Johannes Berg1ed32e42009-12-23 13:15:45 +01001451 ic_opmode = vif->type;
Jouni Malinen2ad67de2008-08-11 14:01:47 +03001452 break;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001453 default:
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001454 ath_print(common, ATH_DBG_FATAL,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001455 "Interface type %d not yet supported\n", vif->type);
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001456 ret = -EOPNOTSUPP;
1457 goto out;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001458 }
1459
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001460 ath_print(common, ATH_DBG_CONFIG,
1461 "Attach a VIF of type: %d\n", ic_opmode);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001462
Sujith17d79042009-02-09 13:27:03 +05301463 /* Set the VIF opmode */
Sujith5640b082008-10-29 10:16:06 +05301464 avp->av_opmode = ic_opmode;
1465 avp->av_bslot = -1;
1466
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001467 sc->nvifs++;
Jouni Malinen8ca21f02009-03-03 19:23:27 +02001468
Felix Fietkau364734f2010-09-14 20:22:44 +02001469 ath9k_set_bssid_mask(hw, vif);
Jouni Malinen8ca21f02009-03-03 19:23:27 +02001470
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001471 if (sc->nvifs > 1)
1472 goto out; /* skip global settings for secondary vif */
1473
Sujithb238e902009-03-03 10:16:56 +05301474 if (ic_opmode == NL80211_IFTYPE_AP) {
Pavel Roskin30691682010-03-31 18:05:31 -04001475 ath9k_hw_set_tsfadjust(ah, 1);
Sujithb238e902009-03-03 10:16:56 +05301476 sc->sc_flags |= SC_OP_TSF_RESET;
1477 }
Sujith5640b082008-10-29 10:16:06 +05301478
Sujith5640b082008-10-29 10:16:06 +05301479 /* Set the device opmode */
Pavel Roskin30691682010-03-31 18:05:31 -04001480 ah->opmode = ic_opmode;
Sujith5640b082008-10-29 10:16:06 +05301481
Vivek Natarajan4e30ffa2009-01-28 20:53:27 +05301482 /*
1483 * Enable MIB interrupts when there are hardware phy counters.
1484 * Note we only do this (at the moment) for station mode.
1485 */
Johannes Berg1ed32e42009-12-23 13:15:45 +01001486 if ((vif->type == NL80211_IFTYPE_STATION) ||
1487 (vif->type == NL80211_IFTYPE_ADHOC) ||
1488 (vif->type == NL80211_IFTYPE_MESH_POINT)) {
Luis R. Rodriguez3448f912010-04-15 17:38:23 -04001489 if (ah->config.enable_ani)
1490 ah->imask |= ATH9K_INT_MIB;
Pavel Roskin30691682010-03-31 18:05:31 -04001491 ah->imask |= ATH9K_INT_TSFOOR;
Sujith4af9cf42009-02-12 10:06:47 +05301492 }
1493
Pavel Roskin30691682010-03-31 18:05:31 -04001494 ath9k_hw_set_interrupts(ah, ah->imask);
Vivek Natarajan4e30ffa2009-01-28 20:53:27 +05301495
Johannes Berg1ed32e42009-12-23 13:15:45 +01001496 if (vif->type == NL80211_IFTYPE_AP ||
Rajkumar Manoharan5f841b42010-10-27 18:31:15 +05301497 vif->type == NL80211_IFTYPE_ADHOC) {
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001498 sc->sc_flags |= SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -08001499 ath_start_ani(common);
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001500 }
Luis R. Rodriguez6f255422008-10-03 15:45:27 -07001501
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001502out:
Sujith141b38b2009-02-04 08:10:07 +05301503 mutex_unlock(&sc->mutex);
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001504 return ret;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001505}
1506
1507static void ath9k_remove_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001508 struct ieee80211_vif *vif)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001509{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001510 struct ath_wiphy *aphy = hw->priv;
1511 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001512 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Johannes Berg1ed32e42009-12-23 13:15:45 +01001513 struct ath_vif *avp = (void *)vif->drv_priv;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001514 int i;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001515
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001516 ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001517
Sujith141b38b2009-02-04 08:10:07 +05301518 mutex_lock(&sc->mutex);
1519
Luis R. Rodriguez6f255422008-10-03 15:45:27 -07001520 /* Stop ANI */
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001521 sc->sc_flags &= ~SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -08001522 del_timer_sync(&common->ani.timer);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001523
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001524 /* Reclaim beacon resources */
Pat Erley9cb54122009-03-20 22:59:59 -04001525 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
1526 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
1527 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
Luis R. Rodriguez5f70a882009-12-23 20:03:28 -05001528 ath9k_ps_wakeup(sc);
Sujithb77f4832008-12-07 21:44:03 +05301529 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
Luis R. Rodriguez5f70a882009-12-23 20:03:28 -05001530 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001531 }
1532
Felix Fietkau74401772010-01-19 20:51:32 +01001533 ath_beacon_return(sc, avp);
Sujith672840a2008-08-11 14:05:08 +05301534 sc->sc_flags &= ~SC_OP_BEACONS;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001535
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001536 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
Johannes Berg1ed32e42009-12-23 13:15:45 +01001537 if (sc->beacon.bslot[i] == vif) {
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001538 printk(KERN_DEBUG "%s: vif had allocated beacon "
1539 "slot\n", __func__);
1540 sc->beacon.bslot[i] = NULL;
Jouni Malinenc52f33d2009-03-03 19:23:29 +02001541 sc->beacon.bslot_aphy[i] = NULL;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001542 }
1543 }
1544
Sujith17d79042009-02-09 13:27:03 +05301545 sc->nvifs--;
Sujith141b38b2009-02-04 08:10:07 +05301546
1547 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001548}
1549
Senthil Balasubramanianfbab7392010-10-05 20:36:40 +05301550static void ath9k_enable_ps(struct ath_softc *sc)
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301551{
Pavel Roskin30691682010-03-31 18:05:31 -04001552 struct ath_hw *ah = sc->sc_ah;
1553
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301554 sc->ps_enabled = true;
Pavel Roskin30691682010-03-31 18:05:31 -04001555 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1556 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1557 ah->imask |= ATH9K_INT_TIM_TIMER;
1558 ath9k_hw_set_interrupts(ah, ah->imask);
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301559 }
Vasanthakumar Thiagarajanfdf76622010-05-17 18:57:55 -07001560 ath9k_hw_setrxabort(ah, 1);
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301561 }
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301562}
1563
Senthil Balasubramanian845d7082010-10-05 20:36:41 +05301564static void ath9k_disable_ps(struct ath_softc *sc)
1565{
1566 struct ath_hw *ah = sc->sc_ah;
1567
1568 sc->ps_enabled = false;
1569 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1570 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1571 ath9k_hw_setrxabort(ah, 0);
1572 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1573 PS_WAIT_FOR_CAB |
1574 PS_WAIT_FOR_PSPOLL_DATA |
1575 PS_WAIT_FOR_TX_ACK);
1576 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1577 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1578 ath9k_hw_set_interrupts(ah, ah->imask);
1579 }
1580 }
1581
1582}
1583
Johannes Berge8975582008-10-09 12:18:51 +02001584static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001585{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001586 struct ath_wiphy *aphy = hw->priv;
1587 struct ath_softc *sc = aphy->sc;
Felix Fietkau34300982010-10-10 18:21:52 +02001588 struct ath_hw *ah = sc->sc_ah;
1589 struct ath_common *common = ath9k_hw_common(ah);
Johannes Berge8975582008-10-09 12:18:51 +02001590 struct ieee80211_conf *conf = &hw->conf;
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001591 bool disable_radio;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001592
Sujithaa33de02008-12-18 11:40:16 +05301593 mutex_lock(&sc->mutex);
Sujith141b38b2009-02-04 08:10:07 +05301594
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001595 /*
1596 * Leave this as the first check because we need to turn on the
1597 * radio if it was disabled before prior to processing the rest
1598 * of the changes. Likewise we must only disable the radio towards
1599 * the end.
1600 */
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001601 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001602 bool enable_radio;
1603 bool all_wiphys_idle;
1604 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001605
1606 spin_lock_bh(&sc->wiphy_lock);
1607 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001608 ath9k_set_wiphy_idle(aphy, idle);
1609
Felix Fietkau11446012010-04-06 12:05:01 -07001610 enable_radio = (!idle && all_wiphys_idle);
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001611
1612 /*
1613 * After we unlock here its possible another wiphy
1614 * can be re-renabled so to account for that we will
1615 * only disable the radio toward the end of this routine
1616 * if by then all wiphys are still idle.
1617 */
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001618 spin_unlock_bh(&sc->wiphy_lock);
1619
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001620 if (enable_radio) {
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +05301621 sc->ps_idle = false;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -08001622 ath_radio_enable(sc, hw);
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001623 ath_print(common, ATH_DBG_CONFIG,
1624 "not-idle: enabling radio\n");
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001625 }
1626 }
1627
Luis R. Rodrigueze7824a52009-11-24 02:53:25 -05001628 /*
1629 * We just prepare to enable PS. We have to wait until our AP has
1630 * ACK'd our null data frame to disable RX otherwise we'll ignore
1631 * those ACKs and end up retransmitting the same null data frames.
1632 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1633 */
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301634 if (changed & IEEE80211_CONF_CHANGE_PS) {
Luis R. Rodriguez8ab2cd02010-09-16 15:12:26 -04001635 unsigned long flags;
1636 spin_lock_irqsave(&sc->sc_pm_lock, flags);
Senthil Balasubramanianfbab7392010-10-05 20:36:40 +05301637 if (conf->flags & IEEE80211_CONF_PS)
1638 ath9k_enable_ps(sc);
Senthil Balasubramanian845d7082010-10-05 20:36:41 +05301639 else
1640 ath9k_disable_ps(sc);
Luis R. Rodriguez8ab2cd02010-09-16 15:12:26 -04001641 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301642 }
1643
Sujith199afd92010-01-08 10:36:13 +05301644 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1645 if (conf->flags & IEEE80211_CONF_MONITOR) {
1646 ath_print(common, ATH_DBG_CONFIG,
Rajkumar Manoharan5f841b42010-10-27 18:31:15 +05301647 "Monitor mode is enabled\n");
1648 sc->sc_ah->is_monitoring = true;
1649 } else {
1650 ath_print(common, ATH_DBG_CONFIG,
1651 "Monitor mode is disabled\n");
1652 sc->sc_ah->is_monitoring = false;
Sujith199afd92010-01-08 10:36:13 +05301653 }
1654 }
1655
Johannes Berg47979382009-01-07 10:13:27 +01001656 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
Sujith99405f92008-11-24 12:08:35 +05301657 struct ieee80211_channel *curchan = hw->conf.channel;
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001658 int pos = curchan->hw_value;
Felix Fietkau34300982010-10-10 18:21:52 +02001659 int old_pos = -1;
1660 unsigned long flags;
1661
1662 if (ah->curchan)
1663 old_pos = ah->curchan - &ah->channels[0];
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001664
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001665 aphy->chan_idx = pos;
1666 aphy->chan_is_ht = conf_is_ht(conf);
Felix Fietkau5ee08652010-07-31 00:11:59 +02001667 if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1668 sc->sc_flags |= SC_OP_OFFCHANNEL;
1669 else
1670 sc->sc_flags &= ~SC_OP_OFFCHANNEL;
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001671
Jouni Malinen8089cc42009-03-03 19:23:38 +02001672 if (aphy->state == ATH_WIPHY_SCAN ||
1673 aphy->state == ATH_WIPHY_ACTIVE)
1674 ath9k_wiphy_pause_all_forced(sc, aphy);
1675 else {
1676 /*
1677 * Do not change operational channel based on a paused
1678 * wiphy changes.
1679 */
1680 goto skip_chan_change;
1681 }
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001682
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001683 ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1684 curchan->center_freq);
Johannes Bergae5eb022008-10-14 16:58:37 +02001685
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001686 /* XXX: remove me eventualy */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001687 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
Sujithe11602b2008-11-27 09:46:27 +05301688
Luis R. Rodriguezecf70442008-12-23 15:58:43 -08001689 ath_update_chainmask(sc, conf_is_ht(conf));
Sujith86060f02009-01-07 14:25:29 +05301690
Felix Fietkau34300982010-10-10 18:21:52 +02001691 /* update survey stats for the old channel before switching */
1692 spin_lock_irqsave(&common->cc_lock, flags);
1693 ath_update_survey_stats(sc);
1694 spin_unlock_irqrestore(&common->cc_lock, flags);
1695
1696 /*
1697 * If the operating channel changes, change the survey in-use flags
1698 * along with it.
1699 * Reset the survey data for the new channel, unless we're switching
1700 * back to the operating channel from an off-channel operation.
1701 */
1702 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1703 sc->cur_survey != &sc->survey[pos]) {
1704
1705 if (sc->cur_survey)
1706 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1707
1708 sc->cur_survey = &sc->survey[pos];
1709
1710 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1711 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1712 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1713 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1714 }
1715
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001716 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001717 ath_print(common, ATH_DBG_FATAL,
1718 "Unable to set channel\n");
Sujithaa33de02008-12-18 11:40:16 +05301719 mutex_unlock(&sc->mutex);
Sujithe11602b2008-11-27 09:46:27 +05301720 return -EINVAL;
1721 }
Felix Fietkau34300982010-10-10 18:21:52 +02001722
1723 /*
1724 * The most recent snapshot of channel->noisefloor for the old
1725 * channel is only available after the hardware reset. Copy it to
1726 * the survey stats now.
1727 */
1728 if (old_pos >= 0)
1729 ath_update_survey_nf(sc, old_pos);
Sujith094d05d2008-12-12 11:57:43 +05301730 }
Sujith86b89ee2008-08-07 10:54:57 +05301731
Jouni Malinen8089cc42009-03-03 19:23:38 +02001732skip_chan_change:
Luis R. Rodriguezc9f6a652010-01-19 14:04:19 -05001733 if (changed & IEEE80211_CONF_CHANGE_POWER) {
Sujith17d79042009-02-09 13:27:03 +05301734 sc->config.txpowlimit = 2 * conf->power_level;
Luis R. Rodriguezc9f6a652010-01-19 14:04:19 -05001735 ath_update_txpow(sc);
1736 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001737
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001738 spin_lock_bh(&sc->wiphy_lock);
1739 disable_radio = ath9k_all_wiphys_idle(sc);
1740 spin_unlock_bh(&sc->wiphy_lock);
1741
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001742 if (disable_radio) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001743 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +05301744 sc->ps_idle = true;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -08001745 ath_radio_disable(sc, hw);
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001746 }
1747
Sujithaa33de02008-12-18 11:40:16 +05301748 mutex_unlock(&sc->mutex);
Sujith141b38b2009-02-04 08:10:07 +05301749
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001750 return 0;
1751}
1752
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001753#define SUPPORTED_FILTERS \
1754 (FIF_PROMISC_IN_BSS | \
1755 FIF_ALLMULTI | \
1756 FIF_CONTROL | \
Luis R. Rodriguezaf6a3fc2009-08-08 21:55:16 -04001757 FIF_PSPOLL | \
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001758 FIF_OTHER_BSS | \
1759 FIF_BCN_PRBRESP_PROMISC | \
Jouni Malinen9c1d8e42010-10-13 17:29:31 +03001760 FIF_PROBE_REQ | \
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001761 FIF_FCSFAIL)
1762
Sujith7dcfdcd2008-08-11 14:03:13 +05301763/* FIXME: sc->sc_full_reset ? */
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001764static void ath9k_configure_filter(struct ieee80211_hw *hw,
1765 unsigned int changed_flags,
1766 unsigned int *total_flags,
Johannes Berg3ac64be2009-08-17 16:16:53 +02001767 u64 multicast)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001768{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001769 struct ath_wiphy *aphy = hw->priv;
1770 struct ath_softc *sc = aphy->sc;
Sujith7dcfdcd2008-08-11 14:03:13 +05301771 u32 rfilt;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001772
1773 changed_flags &= SUPPORTED_FILTERS;
1774 *total_flags &= SUPPORTED_FILTERS;
1775
Sujithb77f4832008-12-07 21:44:03 +05301776 sc->rx.rxfilter = *total_flags;
Jouni Malinenaa68aea2009-05-19 17:01:41 +03001777 ath9k_ps_wakeup(sc);
Sujith7dcfdcd2008-08-11 14:03:13 +05301778 rfilt = ath_calcrxfilter(sc);
1779 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
Jouni Malinenaa68aea2009-05-19 17:01:41 +03001780 ath9k_ps_restore(sc);
Sujith7dcfdcd2008-08-11 14:03:13 +05301781
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001782 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1783 "Set HW RX filter: 0x%x\n", rfilt);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001784}
1785
Johannes Berg4ca77862010-02-19 19:06:56 +01001786static int ath9k_sta_add(struct ieee80211_hw *hw,
1787 struct ieee80211_vif *vif,
1788 struct ieee80211_sta *sta)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001789{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001790 struct ath_wiphy *aphy = hw->priv;
1791 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001792
Johannes Berg4ca77862010-02-19 19:06:56 +01001793 ath_node_attach(sc, sta);
1794
1795 return 0;
1796}
1797
1798static int ath9k_sta_remove(struct ieee80211_hw *hw,
1799 struct ieee80211_vif *vif,
1800 struct ieee80211_sta *sta)
1801{
1802 struct ath_wiphy *aphy = hw->priv;
1803 struct ath_softc *sc = aphy->sc;
1804
1805 ath_node_detach(sc, sta);
1806
1807 return 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001808}
1809
Sujith141b38b2009-02-04 08:10:07 +05301810static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001811 const struct ieee80211_tx_queue_params *params)
1812{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001813 struct ath_wiphy *aphy = hw->priv;
1814 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001815 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Sujithea9880f2008-08-07 10:53:10 +05301816 struct ath9k_tx_queue_info qi;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001817 int ret = 0, qnum;
1818
1819 if (queue >= WME_NUM_AC)
1820 return 0;
1821
Sujith141b38b2009-02-04 08:10:07 +05301822 mutex_lock(&sc->mutex);
1823
Sujith1ffb0612009-03-30 15:28:46 +05301824 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1825
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001826 qi.tqi_aifs = params->aifs;
1827 qi.tqi_cwmin = params->cw_min;
1828 qi.tqi_cwmax = params->cw_max;
1829 qi.tqi_burstTime = params->txop;
1830 qnum = ath_get_hal_qnum(queue, sc);
1831
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001832 ath_print(common, ATH_DBG_CONFIG,
1833 "Configure tx [queue/halq] [%d/%d], "
1834 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1835 queue, qnum, params->aifs, params->cw_min,
1836 params->cw_max, params->txop);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001837
1838 ret = ath_txq_update(sc, qnum, &qi);
1839 if (ret)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001840 ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001841
Vivek Natarajan94db2932009-11-25 12:01:54 +05301842 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001843 if ((qnum == sc->tx.hwq_map[WME_AC_BE]) && !ret)
Vivek Natarajan94db2932009-11-25 12:01:54 +05301844 ath_beaconq_config(sc);
1845
Sujith141b38b2009-02-04 08:10:07 +05301846 mutex_unlock(&sc->mutex);
1847
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001848 return ret;
1849}
1850
1851static int ath9k_set_key(struct ieee80211_hw *hw,
1852 enum set_key_cmd cmd,
Johannes Bergdc822b52008-12-29 12:55:09 +01001853 struct ieee80211_vif *vif,
1854 struct ieee80211_sta *sta,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001855 struct ieee80211_key_conf *key)
1856{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001857 struct ath_wiphy *aphy = hw->priv;
1858 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001859 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001860 int ret = 0;
1861
Jouni Malinenb3bd89c2009-02-24 13:42:01 +02001862 if (modparam_nohwcrypt)
1863 return -ENOSPC;
1864
Sujith141b38b2009-02-04 08:10:07 +05301865 mutex_lock(&sc->mutex);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301866 ath9k_ps_wakeup(sc);
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001867 ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001868
1869 switch (cmd) {
1870 case SET_KEY:
Bruno Randolf040e5392010-09-08 16:05:04 +09001871 ret = ath_key_config(common, vif, sta, key);
Jouni Malinen6ace2892008-12-17 13:32:17 +02001872 if (ret >= 0) {
1873 key->hw_key_idx = ret;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001874 /* push IV and Michael MIC generation to stack */
1875 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
Johannes Berg97359d12010-08-10 09:46:38 +02001876 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
Senthil Balasubramanian1b961752008-09-01 19:45:21 +05301877 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
Johannes Berg97359d12010-08-10 09:46:38 +02001878 if (sc->sc_ah->sw_mgmt_crypto &&
1879 key->cipher == WLAN_CIPHER_SUITE_CCMP)
Jouni Malinen0ced0e12009-01-08 13:32:13 +02001880 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
Jouni Malinen6ace2892008-12-17 13:32:17 +02001881 ret = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001882 }
1883 break;
1884 case DISABLE_KEY:
Bruno Randolf040e5392010-09-08 16:05:04 +09001885 ath_key_delete(common, key);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001886 break;
1887 default:
1888 ret = -EINVAL;
1889 }
1890
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301891 ath9k_ps_restore(sc);
Sujith141b38b2009-02-04 08:10:07 +05301892 mutex_unlock(&sc->mutex);
1893
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001894 return ret;
1895}
1896
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001897static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1898 struct ieee80211_vif *vif,
1899 struct ieee80211_bss_conf *bss_conf,
1900 u32 changed)
1901{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001902 struct ath_wiphy *aphy = hw->priv;
1903 struct ath_softc *sc = aphy->sc;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001904 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez15107182009-09-10 09:22:37 -07001905 struct ath_common *common = ath9k_hw_common(ah);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001906 struct ath_vif *avp = (void *)vif->drv_priv;
Felix Fietkau0005baf2010-01-15 02:33:40 +01001907 int slottime;
Sujithc6089cc2009-11-16 11:40:48 +05301908 int error;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001909
Sujith141b38b2009-02-04 08:10:07 +05301910 mutex_lock(&sc->mutex);
1911
Sujithc6089cc2009-11-16 11:40:48 +05301912 if (changed & BSS_CHANGED_BSSID) {
1913 /* Set BSSID */
1914 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1915 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
Luis R. Rodriguez15107182009-09-10 09:22:37 -07001916 common->curaid = 0;
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -07001917 ath9k_hw_write_associd(ah);
Sujithc6089cc2009-11-16 11:40:48 +05301918
1919 /* Set aggregation protection mode parameters */
1920 sc->config.ath_aggr_prot = 0;
1921
1922 /* Only legacy IBSS for now */
1923 if (vif->type == NL80211_IFTYPE_ADHOC)
1924 ath_update_chainmask(sc, 0);
1925
1926 ath_print(common, ATH_DBG_CONFIG,
1927 "BSSID: %pM aid: 0x%x\n",
1928 common->curbssid, common->curaid);
1929
1930 /* need to reconfigure the beacon */
1931 sc->sc_flags &= ~SC_OP_BEACONS ;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001932 }
1933
Sujithc6089cc2009-11-16 11:40:48 +05301934 /* Enable transmission of beacons (AP, IBSS, MESH) */
1935 if ((changed & BSS_CHANGED_BEACON) ||
1936 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
1937 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1938 error = ath_beacon_alloc(aphy, vif);
1939 if (!error)
1940 ath_beacon_config(sc, vif);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001941 }
1942
Felix Fietkau0005baf2010-01-15 02:33:40 +01001943 if (changed & BSS_CHANGED_ERP_SLOT) {
1944 if (bss_conf->use_short_slot)
1945 slottime = 9;
1946 else
1947 slottime = 20;
1948 if (vif->type == NL80211_IFTYPE_AP) {
1949 /*
1950 * Defer update, so that connected stations can adjust
1951 * their settings at the same time.
1952 * See beacon.c for more details
1953 */
1954 sc->beacon.slottime = slottime;
1955 sc->beacon.updateslot = UPDATE;
1956 } else {
1957 ah->slottime = slottime;
1958 ath9k_hw_init_global_settings(ah);
1959 }
1960 }
1961
Sujithc6089cc2009-11-16 11:40:48 +05301962 /* Disable transmission of beacons */
1963 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
1964 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1965
1966 if (changed & BSS_CHANGED_BEACON_INT) {
1967 sc->beacon_interval = bss_conf->beacon_int;
1968 /*
1969 * In case of AP mode, the HW TSF has to be reset
1970 * when the beacon interval changes.
1971 */
1972 if (vif->type == NL80211_IFTYPE_AP) {
1973 sc->sc_flags |= SC_OP_TSF_RESET;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001974 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001975 error = ath_beacon_alloc(aphy, vif);
1976 if (!error)
1977 ath_beacon_config(sc, vif);
Sujithc6089cc2009-11-16 11:40:48 +05301978 } else {
1979 ath_beacon_config(sc, vif);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001980 }
1981 }
1982
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001983 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001984 ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
1985 bss_conf->use_short_preamble);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001986 if (bss_conf->use_short_preamble)
Sujith672840a2008-08-11 14:05:08 +05301987 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001988 else
Sujith672840a2008-08-11 14:05:08 +05301989 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001990 }
1991
1992 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001993 ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
1994 bss_conf->use_cts_prot);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001995 if (bss_conf->use_cts_prot &&
1996 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
Sujith672840a2008-08-11 14:05:08 +05301997 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001998 else
Sujith672840a2008-08-11 14:05:08 +05301999 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002000 }
2001
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002002 if (changed & BSS_CHANGED_ASSOC) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07002003 ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002004 bss_conf->assoc);
Sujith5640b082008-10-29 10:16:06 +05302005 ath9k_bss_assoc_info(sc, vif, bss_conf);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002006 }
Sujith141b38b2009-02-04 08:10:07 +05302007
2008 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002009}
2010
2011static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
2012{
2013 u64 tsf;
Jouni Malinenbce048d2009-03-03 19:23:28 +02002014 struct ath_wiphy *aphy = hw->priv;
2015 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002016
Sujith141b38b2009-02-04 08:10:07 +05302017 mutex_lock(&sc->mutex);
2018 tsf = ath9k_hw_gettsf64(sc->sc_ah);
2019 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002020
2021 return tsf;
2022}
2023
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01002024static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
2025{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002026 struct ath_wiphy *aphy = hw->priv;
2027 struct ath_softc *sc = aphy->sc;
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01002028
Sujith141b38b2009-02-04 08:10:07 +05302029 mutex_lock(&sc->mutex);
2030 ath9k_hw_settsf64(sc->sc_ah, tsf);
2031 mutex_unlock(&sc->mutex);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01002032}
2033
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002034static void ath9k_reset_tsf(struct ieee80211_hw *hw)
2035{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002036 struct ath_wiphy *aphy = hw->priv;
2037 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002038
Sujith141b38b2009-02-04 08:10:07 +05302039 mutex_lock(&sc->mutex);
Luis R. Rodriguez21526d52009-09-09 20:05:39 -07002040
2041 ath9k_ps_wakeup(sc);
Sujith141b38b2009-02-04 08:10:07 +05302042 ath9k_hw_reset_tsf(sc->sc_ah);
Luis R. Rodriguez21526d52009-09-09 20:05:39 -07002043 ath9k_ps_restore(sc);
2044
Sujith141b38b2009-02-04 08:10:07 +05302045 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002046}
2047
2048static int ath9k_ampdu_action(struct ieee80211_hw *hw,
Johannes Bergc951ad32009-11-16 12:00:38 +01002049 struct ieee80211_vif *vif,
Sujith141b38b2009-02-04 08:10:07 +05302050 enum ieee80211_ampdu_mlme_action action,
2051 struct ieee80211_sta *sta,
2052 u16 tid, u16 *ssn)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002053{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002054 struct ath_wiphy *aphy = hw->priv;
2055 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002056 int ret = 0;
2057
Johannes Berg85ad1812010-06-10 10:21:49 +02002058 local_bh_disable();
2059
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002060 switch (action) {
2061 case IEEE80211_AMPDU_RX_START:
Sujithdca3edb2008-10-29 10:19:01 +05302062 if (!(sc->sc_flags & SC_OP_RXAGGR))
2063 ret = -ENOTSUPP;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002064 break;
2065 case IEEE80211_AMPDU_RX_STOP:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002066 break;
2067 case IEEE80211_AMPDU_TX_START:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002068 ath9k_ps_wakeup(sc);
Felix Fietkau231c3a12010-09-20 19:35:28 +02002069 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
2070 if (!ret)
2071 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002072 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002073 break;
2074 case IEEE80211_AMPDU_TX_STOP:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002075 ath9k_ps_wakeup(sc);
Sujithf83da962009-07-23 15:32:37 +05302076 ath_tx_aggr_stop(sc, sta, tid);
Johannes Bergc951ad32009-11-16 12:00:38 +01002077 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002078 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002079 break;
Johannes Bergb1720232009-03-23 17:28:39 +01002080 case IEEE80211_AMPDU_TX_OPERATIONAL:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002081 ath9k_ps_wakeup(sc);
Sujith8469cde2008-10-29 10:19:28 +05302082 ath_tx_aggr_resume(sc, sta, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05002083 ath9k_ps_restore(sc);
Sujith8469cde2008-10-29 10:19:28 +05302084 break;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002085 default:
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07002086 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
2087 "Unknown AMPDU action\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002088 }
2089
Johannes Berg85ad1812010-06-10 10:21:49 +02002090 local_bh_enable();
2091
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002092 return ret;
2093}
2094
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002095static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
2096 struct survey_info *survey)
2097{
2098 struct ath_wiphy *aphy = hw->priv;
2099 struct ath_softc *sc = aphy->sc;
Felix Fietkau34300982010-10-10 18:21:52 +02002100 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Felix Fietkau39162db2010-09-29 19:12:06 +02002101 struct ieee80211_supported_band *sband;
Felix Fietkau34300982010-10-10 18:21:52 +02002102 struct ieee80211_channel *chan;
2103 unsigned long flags;
2104 int pos;
2105
2106 spin_lock_irqsave(&common->cc_lock, flags);
2107 if (idx == 0)
2108 ath_update_survey_stats(sc);
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002109
Felix Fietkau39162db2010-09-29 19:12:06 +02002110 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2111 if (sband && idx >= sband->n_channels) {
2112 idx -= sband->n_channels;
2113 sband = NULL;
2114 }
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002115
Felix Fietkau39162db2010-09-29 19:12:06 +02002116 if (!sband)
2117 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
2118
Felix Fietkau34300982010-10-10 18:21:52 +02002119 if (!sband || idx >= sband->n_channels) {
2120 spin_unlock_irqrestore(&common->cc_lock, flags);
2121 return -ENOENT;
Felix Fietkau4f1a5a42010-09-29 17:15:28 +02002122 }
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002123
Felix Fietkau34300982010-10-10 18:21:52 +02002124 chan = &sband->channels[idx];
2125 pos = chan->hw_value;
2126 memcpy(survey, &sc->survey[pos], sizeof(*survey));
2127 survey->channel = chan;
2128 spin_unlock_irqrestore(&common->cc_lock, flags);
2129
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002130 return 0;
2131}
2132
Sujith0c98de62009-03-03 10:16:45 +05302133static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
2134{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002135 struct ath_wiphy *aphy = hw->priv;
2136 struct ath_softc *sc = aphy->sc;
Sujith0c98de62009-03-03 10:16:45 +05302137
Sujith3d832612009-08-21 12:00:28 +05302138 mutex_lock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002139 if (ath9k_wiphy_scanning(sc)) {
Jouni Malinen8089cc42009-03-03 19:23:38 +02002140 /*
Luis R. Rodriguez30888332010-07-27 16:33:06 -04002141 * There is a race here in mac80211 but fixing it requires
2142 * we revisit how we handle the scan complete callback.
2143 * After mac80211 fixes we will not have configured hardware
2144 * to the home channel nor would we have configured the RX
2145 * filter yet.
Jouni Malinen8089cc42009-03-03 19:23:38 +02002146 */
Sujith3d832612009-08-21 12:00:28 +05302147 mutex_unlock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002148 return;
2149 }
2150
2151 aphy->state = ATH_WIPHY_SCAN;
2152 ath9k_wiphy_pause_all_forced(sc, aphy);
Sujith3d832612009-08-21 12:00:28 +05302153 mutex_unlock(&sc->mutex);
Sujith0c98de62009-03-03 10:16:45 +05302154}
2155
Luis R. Rodriguez30888332010-07-27 16:33:06 -04002156/*
2157 * XXX: this requires a revisit after the driver
2158 * scan_complete gets moved to another place/removed in mac80211.
2159 */
Sujith0c98de62009-03-03 10:16:45 +05302160static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
2161{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002162 struct ath_wiphy *aphy = hw->priv;
2163 struct ath_softc *sc = aphy->sc;
Sujith0c98de62009-03-03 10:16:45 +05302164
Sujith3d832612009-08-21 12:00:28 +05302165 mutex_lock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002166 aphy->state = ATH_WIPHY_ACTIVE;
Sujith3d832612009-08-21 12:00:28 +05302167 mutex_unlock(&sc->mutex);
Sujith0c98de62009-03-03 10:16:45 +05302168}
2169
Felix Fietkaue239d852010-01-15 02:34:58 +01002170static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2171{
2172 struct ath_wiphy *aphy = hw->priv;
2173 struct ath_softc *sc = aphy->sc;
2174 struct ath_hw *ah = sc->sc_ah;
2175
2176 mutex_lock(&sc->mutex);
2177 ah->coverage_class = coverage_class;
2178 ath9k_hw_init_global_settings(ah);
2179 mutex_unlock(&sc->mutex);
2180}
2181
Gabor Juhos6baff7f2009-01-14 20:17:06 +01002182struct ieee80211_ops ath9k_ops = {
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002183 .tx = ath9k_tx,
2184 .start = ath9k_start,
2185 .stop = ath9k_stop,
2186 .add_interface = ath9k_add_interface,
2187 .remove_interface = ath9k_remove_interface,
2188 .config = ath9k_config,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002189 .configure_filter = ath9k_configure_filter,
Johannes Berg4ca77862010-02-19 19:06:56 +01002190 .sta_add = ath9k_sta_add,
2191 .sta_remove = ath9k_sta_remove,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002192 .conf_tx = ath9k_conf_tx,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002193 .bss_info_changed = ath9k_bss_info_changed,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002194 .set_key = ath9k_set_key,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002195 .get_tsf = ath9k_get_tsf,
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01002196 .set_tsf = ath9k_set_tsf,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002197 .reset_tsf = ath9k_reset_tsf,
Johannes Berg4233df62008-10-13 13:35:05 +02002198 .ampdu_action = ath9k_ampdu_action,
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002199 .get_survey = ath9k_get_survey,
Sujith0c98de62009-03-03 10:16:45 +05302200 .sw_scan_start = ath9k_sw_scan_start,
2201 .sw_scan_complete = ath9k_sw_scan_complete,
Johannes Berg3b319aa2009-06-13 14:50:26 +05302202 .rfkill_poll = ath9k_rfkill_poll_state,
Felix Fietkaue239d852010-01-15 02:34:58 +01002203 .set_coverage_class = ath9k_set_coverage_class,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002204};