blob: 8b327bcad695f103a0ec589871109afff038bb48 [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
Luis R. Rodriguezce111ba2008-12-23 15:58:39 -080021static void ath_cache_conf_rate(struct ath_softc *sc,
22 struct ieee80211_conf *conf)
Sujithff37e332008-11-24 12:07:55 +053023{
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080024 switch (conf->channel->band) {
25 case IEEE80211_BAND_2GHZ:
26 if (conf_is_ht20(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010027 sc->cur_rate_mode = ATH9K_MODE_11NG_HT20;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080028 else if (conf_is_ht40_minus(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010029 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080030 else if (conf_is_ht40_plus(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010031 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS;
Luis R. Rodriguez96742252008-12-23 15:58:38 -080032 else
Felix Fietkau545750d2009-11-23 22:21:01 +010033 sc->cur_rate_mode = ATH9K_MODE_11G;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080034 break;
35 case IEEE80211_BAND_5GHZ:
36 if (conf_is_ht20(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010037 sc->cur_rate_mode = ATH9K_MODE_11NA_HT20;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080038 else if (conf_is_ht40_minus(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010039 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080040 else if (conf_is_ht40_plus(conf))
Felix Fietkau545750d2009-11-23 22:21:01 +010041 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080042 else
Felix Fietkau545750d2009-11-23 22:21:01 +010043 sc->cur_rate_mode = ATH9K_MODE_11A;
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080044 break;
45 default:
Luis R. Rodriguezce111ba2008-12-23 15:58:39 -080046 BUG_ON(1);
Luis R. Rodriguez030bb492008-12-23 15:58:37 -080047 break;
48 }
Sujithff37e332008-11-24 12:07:55 +053049}
50
51static void ath_update_txpow(struct ath_softc *sc)
52{
Sujithcbe61d82009-02-09 13:27:12 +053053 struct ath_hw *ah = sc->sc_ah;
Sujithff37e332008-11-24 12:07:55 +053054
Sujith17d79042009-02-09 13:27:03 +053055 if (sc->curtxpow != sc->config.txpowlimit) {
56 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
Sujithff37e332008-11-24 12:07:55 +053057 /* read back in case value is clamped */
Felix Fietkau9cc32712010-06-12 17:22:29 +020058 sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
Sujithff37e332008-11-24 12:07:55 +053059 }
60}
61
62static u8 parse_mpdudensity(u8 mpdudensity)
63{
64 /*
65 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
66 * 0 for no restriction
67 * 1 for 1/4 us
68 * 2 for 1/2 us
69 * 3 for 1 us
70 * 4 for 2 us
71 * 5 for 4 us
72 * 6 for 8 us
73 * 7 for 16 us
74 */
75 switch (mpdudensity) {
76 case 0:
77 return 0;
78 case 1:
79 case 2:
80 case 3:
81 /* Our lower layer calculations limit our precision to
82 1 microsecond */
83 return 1;
84 case 4:
85 return 2;
86 case 5:
87 return 4;
88 case 6:
89 return 8;
90 case 7:
91 return 16;
92 default:
93 return 0;
94 }
95}
96
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +053097static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
98 struct ieee80211_hw *hw)
99{
100 struct ieee80211_channel *curchan = hw->conf.channel;
101 struct ath9k_channel *channel;
102 u8 chan_idx;
103
104 chan_idx = curchan->hw_value;
105 channel = &sc->sc_ah->channels[chan_idx];
106 ath9k_update_ichannel(sc, hw, channel);
107 return channel;
108}
109
Sujith55624202010-01-08 10:36:02 +0530110bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
Luis R. Rodriguez8c77a562009-09-09 21:02:34 -0700111{
112 unsigned long flags;
113 bool ret;
114
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700115 spin_lock_irqsave(&sc->sc_pm_lock, flags);
116 ret = ath9k_hw_setpower(sc->sc_ah, mode);
117 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
Luis R. Rodriguez8c77a562009-09-09 21:02:34 -0700118
119 return ret;
120}
121
Luis R. Rodrigueza91d75a2009-09-09 20:29:18 -0700122void ath9k_ps_wakeup(struct ath_softc *sc)
123{
124 unsigned long flags;
125
126 spin_lock_irqsave(&sc->sc_pm_lock, flags);
127 if (++sc->ps_usecount != 1)
128 goto unlock;
129
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700130 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
Luis R. Rodrigueza91d75a2009-09-09 20:29:18 -0700131
132 unlock:
133 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
134}
135
136void ath9k_ps_restore(struct ath_softc *sc)
137{
138 unsigned long flags;
139
140 spin_lock_irqsave(&sc->sc_pm_lock, flags);
141 if (--sc->ps_usecount != 0)
142 goto unlock;
143
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +0530144 if (sc->ps_idle)
145 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
146 else if (sc->ps_enabled &&
147 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
Sujith1b04b932010-01-08 10:36:05 +0530148 PS_WAIT_FOR_CAB |
149 PS_WAIT_FOR_PSPOLL_DATA |
150 PS_WAIT_FOR_TX_ACK)))
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700151 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
Luis R. Rodrigueza91d75a2009-09-09 20:29:18 -0700152
153 unlock:
154 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
155}
156
Felix Fietkau5ee08652010-07-31 00:11:59 +0200157static void ath_start_ani(struct ath_common *common)
158{
159 struct ath_hw *ah = common->ah;
160 unsigned long timestamp = jiffies_to_msecs(jiffies);
161 struct ath_softc *sc = (struct ath_softc *) common->priv;
162
163 if (!(sc->sc_flags & SC_OP_ANI_RUN))
164 return;
165
166 if (sc->sc_flags & SC_OP_OFFCHANNEL)
167 return;
168
169 common->ani.longcal_timer = timestamp;
170 common->ani.shortcal_timer = timestamp;
171 common->ani.checkani_timer = timestamp;
172
173 mod_timer(&common->ani.timer,
174 jiffies +
175 msecs_to_jiffies((u32)ah->config.ani_poll_interval));
176}
177
Sujithff37e332008-11-24 12:07:55 +0530178/*
179 * Set/change channels. If the channel is really being changed, it's done
180 * by reseting the chip. To accomplish this we must first cleanup any pending
181 * DMA, then restart stuff.
182*/
Jouni Malinen0e2dedf2009-03-03 19:23:32 +0200183int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
184 struct ath9k_channel *hchan)
Sujithff37e332008-11-24 12:07:55 +0530185{
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200186 struct ath_wiphy *aphy = hw->priv;
Sujithcbe61d82009-02-09 13:27:12 +0530187 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700188 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez25c56ee2009-09-13 23:04:44 -0700189 struct ieee80211_conf *conf = &common->hw->conf;
Sujithff37e332008-11-24 12:07:55 +0530190 bool fastcc = true, stopped;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800191 struct ieee80211_channel *channel = hw->conf.channel;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200192 struct ath9k_hw_cal_data *caldata = NULL;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800193 int r;
Sujithff37e332008-11-24 12:07:55 +0530194
195 if (sc->sc_flags & SC_OP_INVALID)
196 return -EIO;
197
Felix Fietkau5ee08652010-07-31 00:11:59 +0200198 del_timer_sync(&common->ani.timer);
199 cancel_work_sync(&sc->paprd_work);
200 cancel_work_sync(&sc->hw_check_work);
201 cancel_delayed_work_sync(&sc->tx_complete_work);
202
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530203 ath9k_ps_wakeup(sc);
204
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800205 /*
206 * This is only performed if the channel settings have
207 * actually changed.
208 *
209 * To switch channels clear any pending DMA operations;
210 * wait long enough for the RX fifo to drain, reset the
211 * hardware at the new frequency, and then re-enable
212 * the relevant bits of the h/w.
213 */
214 ath9k_hw_set_interrupts(ah, 0);
Sujith043a0402009-01-16 21:38:47 +0530215 ath_drain_all_txq(sc, false);
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800216 stopped = ath_stoprecv(sc);
Sujithff37e332008-11-24 12:07:55 +0530217
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800218 /* XXX: do not flush receive queue here. We don't want
219 * to flush data frames already in queue because of
220 * changing channel. */
Sujithff37e332008-11-24 12:07:55 +0530221
Felix Fietkau5ee08652010-07-31 00:11:59 +0200222 if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800223 fastcc = false;
Sujithff37e332008-11-24 12:07:55 +0530224
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200225 if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
226 caldata = &aphy->caldata;
227
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700228 ath_print(common, ATH_DBG_CONFIG,
Luis R. Rodriguez1e51b2f2010-07-29 22:56:22 -0400229 "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700230 sc->sc_ah->curchan->channel,
Luis R. Rodriguez1e51b2f2010-07-29 22:56:22 -0400231 channel->center_freq, conf_is_ht40(conf),
232 fastcc);
Sujith99405f92008-11-24 12:08:35 +0530233
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800234 spin_lock_bh(&sc->sc_resetlock);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800235
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200236 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800237 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700238 ath_print(common, ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500239 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700240 "reset status %d\n",
241 channel->center_freq, r);
Sujithff37e332008-11-24 12:07:55 +0530242 spin_unlock_bh(&sc->sc_resetlock);
Gabor Juhos39892792009-06-15 17:49:09 +0200243 goto ps_restore;
Sujithff37e332008-11-24 12:07:55 +0530244 }
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800245 spin_unlock_bh(&sc->sc_resetlock);
246
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800247 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700248 ath_print(common, ATH_DBG_FATAL,
249 "Unable to restart recv logic\n");
Gabor Juhos39892792009-06-15 17:49:09 +0200250 r = -EIO;
251 goto ps_restore;
Luis R. Rodriguezc0d7c7a2008-12-23 15:58:50 -0800252 }
253
254 ath_cache_conf_rate(sc, &hw->conf);
255 ath_update_txpow(sc);
Pavel Roskin30691682010-03-31 18:05:31 -0400256 ath9k_hw_set_interrupts(ah, ah->imask);
Gabor Juhos39892792009-06-15 17:49:09 +0200257
Luis R. Rodriguez48a6a462010-09-16 15:12:28 -0400258 if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -0400259 ath_beacon_config(sc, NULL);
Luis R. Rodriguez48a6a462010-09-16 15:12:28 -0400260 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
261 ath_start_ani(common);
262 }
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -0400263
Gabor Juhos39892792009-06-15 17:49:09 +0200264 ps_restore:
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530265 ath9k_ps_restore(sc);
Gabor Juhos39892792009-06-15 17:49:09 +0200266 return r;
Sujithff37e332008-11-24 12:07:55 +0530267}
268
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400269static void ath_paprd_activate(struct ath_softc *sc)
270{
271 struct ath_hw *ah = sc->sc_ah;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200272 struct ath9k_hw_cal_data *caldata = ah->caldata;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400273 int chain;
274
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200275 if (!caldata || !caldata->paprd_done)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400276 return;
277
278 ath9k_ps_wakeup(sc);
Felix Fietkauddfef792010-07-30 21:02:11 +0200279 ar9003_paprd_enable(ah, false);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400280 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
281 if (!(ah->caps.tx_chainmask & BIT(chain)))
282 continue;
283
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200284 ar9003_paprd_populate_single_table(ah, caldata, chain);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400285 }
286
287 ar9003_paprd_enable(ah, true);
288 ath9k_ps_restore(sc);
289}
290
291void ath_paprd_calibrate(struct work_struct *work)
292{
293 struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
294 struct ieee80211_hw *hw = sc->hw;
295 struct ath_hw *ah = sc->sc_ah;
296 struct ieee80211_hdr *hdr;
297 struct sk_buff *skb = NULL;
298 struct ieee80211_tx_info *tx_info;
299 int band = hw->conf.channel->band;
300 struct ieee80211_supported_band *sband = &sc->sbands[band];
301 struct ath_tx_control txctl;
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200302 struct ath9k_hw_cal_data *caldata = ah->caldata;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400303 int qnum, ftype;
304 int chain_ok = 0;
305 int chain;
306 int len = 1800;
307 int time_left;
308 int i;
309
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200310 if (!caldata)
311 return;
312
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400313 skb = alloc_skb(len, GFP_KERNEL);
314 if (!skb)
315 return;
316
317 tx_info = IEEE80211_SKB_CB(skb);
318
319 skb_put(skb, len);
320 memset(skb->data, 0, len);
321 hdr = (struct ieee80211_hdr *)skb->data;
322 ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
323 hdr->frame_control = cpu_to_le16(ftype);
John W. Linvillea3d3da12010-07-20 13:15:31 -0400324 hdr->duration_id = cpu_to_le16(10);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400325 memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
326 memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
327 memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
328
329 memset(&txctl, 0, sizeof(txctl));
330 qnum = sc->tx.hwq_map[WME_AC_BE];
331 txctl.txq = &sc->tx.txq[qnum];
332
Vasanthakumar Thiagarajan47399f12010-06-24 04:09:27 -0700333 ath9k_ps_wakeup(sc);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400334 ar9003_paprd_init_table(ah);
335 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
336 if (!(ah->caps.tx_chainmask & BIT(chain)))
337 continue;
338
339 chain_ok = 0;
340 memset(tx_info, 0, sizeof(*tx_info));
341 tx_info->band = band;
342
343 for (i = 0; i < 4; i++) {
344 tx_info->control.rates[i].idx = sband->n_bitrates - 1;
345 tx_info->control.rates[i].count = 6;
346 }
347
348 init_completion(&sc->paprd_complete);
349 ar9003_paprd_setup_gain_table(ah, chain);
350 txctl.paprd = BIT(chain);
351 if (ath_tx_start(hw, skb, &txctl) != 0)
352 break;
353
354 time_left = wait_for_completion_timeout(&sc->paprd_complete,
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700355 msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400356 if (!time_left) {
357 ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
358 "Timeout waiting for paprd training on "
359 "TX chain %d\n",
360 chain);
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700361 goto fail_paprd;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400362 }
363
364 if (!ar9003_paprd_is_done(ah))
365 break;
366
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200367 if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400368 break;
369
370 chain_ok = 1;
371 }
372 kfree_skb(skb);
373
374 if (chain_ok) {
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200375 caldata->paprd_done = true;
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400376 ath_paprd_activate(sc);
377 }
378
Vasanthakumar Thiagarajanca369eb2010-06-24 02:42:44 -0700379fail_paprd:
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400380 ath9k_ps_restore(sc);
381}
382
Sujithff37e332008-11-24 12:07:55 +0530383/*
384 * This routine performs the periodic noise floor calibration function
385 * that is used to adjust and optimize the chip performance. This
386 * takes environmental changes (location, temperature) into account.
387 * When the task is complete, it reschedules itself depending on the
388 * appropriate interval that was calculated.
389 */
Sujith55624202010-01-08 10:36:02 +0530390void ath_ani_calibrate(unsigned long data)
Sujithff37e332008-11-24 12:07:55 +0530391{
Sujith20977d32009-02-20 15:13:28 +0530392 struct ath_softc *sc = (struct ath_softc *)data;
393 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700394 struct ath_common *common = ath9k_hw_common(ah);
Sujithff37e332008-11-24 12:07:55 +0530395 bool longcal = false;
396 bool shortcal = false;
397 bool aniflag = false;
398 unsigned int timestamp = jiffies_to_msecs(jiffies);
Felix Fietkau60444742010-08-02 15:53:15 +0200399 u32 cal_interval, short_cal_interval, long_cal_interval;
400
401 if (ah->caldata && ah->caldata->nfcal_interference)
402 long_cal_interval = ATH_LONG_CALINTERVAL_INT;
403 else
404 long_cal_interval = ATH_LONG_CALINTERVAL;
Sujithff37e332008-11-24 12:07:55 +0530405
Sujith20977d32009-02-20 15:13:28 +0530406 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
407 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
Sujithff37e332008-11-24 12:07:55 +0530408
Jouni Malinen1ffc1c62009-05-19 17:01:39 +0300409 /* Only calibrate if awake */
410 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
411 goto set_timer;
412
413 ath9k_ps_wakeup(sc);
414
Sujithff37e332008-11-24 12:07:55 +0530415 /* Long calibration runs independently of short calibration. */
Felix Fietkau60444742010-08-02 15:53:15 +0200416 if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
Sujithff37e332008-11-24 12:07:55 +0530417 longcal = true;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700418 ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800419 common->ani.longcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530420 }
421
Sujith17d79042009-02-09 13:27:03 +0530422 /* Short calibration applies only while caldone is false */
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800423 if (!common->ani.caldone) {
424 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
Sujithff37e332008-11-24 12:07:55 +0530425 shortcal = true;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700426 ath_print(common, ATH_DBG_ANI,
427 "shortcal @%lu\n", jiffies);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800428 common->ani.shortcal_timer = timestamp;
429 common->ani.resetcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530430 }
431 } else {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800432 if ((timestamp - common->ani.resetcal_timer) >=
Sujithff37e332008-11-24 12:07:55 +0530433 ATH_RESTART_CALINTERVAL) {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800434 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
435 if (common->ani.caldone)
436 common->ani.resetcal_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530437 }
438 }
439
440 /* Verify whether we must check ANI */
Luis R. Rodrigueze36b27a2010-06-12 00:33:45 -0400441 if ((timestamp - common->ani.checkani_timer) >=
442 ah->config.ani_poll_interval) {
Sujithff37e332008-11-24 12:07:55 +0530443 aniflag = true;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800444 common->ani.checkani_timer = timestamp;
Sujithff37e332008-11-24 12:07:55 +0530445 }
446
447 /* Skip all processing if there's nothing to do. */
448 if (longcal || shortcal || aniflag) {
449 /* Call ANI routine if necessary */
450 if (aniflag)
Vasanthakumar Thiagarajan22e66a42009-08-19 16:23:40 +0530451 ath9k_hw_ani_monitor(ah, ah->curchan);
Sujithff37e332008-11-24 12:07:55 +0530452
453 /* Perform calibration if necessary */
454 if (longcal || shortcal) {
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800455 common->ani.caldone =
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700456 ath9k_hw_calibrate(ah,
457 ah->curchan,
458 common->rx_chainmask,
459 longcal);
Sujithff37e332008-11-24 12:07:55 +0530460
Sujith379f0442009-04-13 21:56:48 +0530461 if (longcal)
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800462 common->ani.noise_floor = ath9k_hw_getchan_noise(ah,
Sujith379f0442009-04-13 21:56:48 +0530463 ah->curchan);
Sujithff37e332008-11-24 12:07:55 +0530464
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700465 ath_print(common, ATH_DBG_ANI,
466 " calibrate chan %u/%x nf: %d\n",
467 ah->curchan->channel,
468 ah->curchan->channelFlags,
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800469 common->ani.noise_floor);
Sujithff37e332008-11-24 12:07:55 +0530470 }
471 }
472
Jouni Malinen1ffc1c62009-05-19 17:01:39 +0300473 ath9k_ps_restore(sc);
474
Sujith20977d32009-02-20 15:13:28 +0530475set_timer:
Sujithff37e332008-11-24 12:07:55 +0530476 /*
477 * Set timer interval based on previous results.
478 * The interval must be the shortest necessary to satisfy ANI,
479 * short calibration and long calibration.
480 */
Sujithaac92072008-12-02 18:37:54 +0530481 cal_interval = ATH_LONG_CALINTERVAL;
Sujith2660b812009-02-09 13:27:26 +0530482 if (sc->sc_ah->config.enable_ani)
Luis R. Rodrigueze36b27a2010-06-12 00:33:45 -0400483 cal_interval = min(cal_interval,
484 (u32)ah->config.ani_poll_interval);
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800485 if (!common->ani.caldone)
Sujith20977d32009-02-20 15:13:28 +0530486 cal_interval = min(cal_interval, (u32)short_cal_interval);
Sujithff37e332008-11-24 12:07:55 +0530487
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800488 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200489 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
490 if (!ah->caldata->paprd_done)
Felix Fietkau9f42c2b2010-06-12 00:34:01 -0400491 ieee80211_queue_work(sc->hw, &sc->paprd_work);
492 else
493 ath_paprd_activate(sc);
494 }
Sujithff37e332008-11-24 12:07:55 +0530495}
496
497/*
498 * Update tx/rx chainmask. For legacy association,
499 * hard code chainmask to 1x1, for 11n association, use
Vasanthakumar Thiagarajanc97c92d2009-01-02 15:35:46 +0530500 * the chainmask configuration, for bt coexistence, use
501 * the chainmask configuration even in legacy mode.
Sujithff37e332008-11-24 12:07:55 +0530502 */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +0200503void ath_update_chainmask(struct ath_softc *sc, int is_ht)
Sujithff37e332008-11-24 12:07:55 +0530504{
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700505 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700506 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700507
Felix Fietkau5ee08652010-07-31 00:11:59 +0200508 if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht ||
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -0700509 (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700510 common->tx_chainmask = ah->caps.tx_chainmask;
511 common->rx_chainmask = ah->caps.rx_chainmask;
Sujithff37e332008-11-24 12:07:55 +0530512 } else {
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700513 common->tx_chainmask = 1;
514 common->rx_chainmask = 1;
Sujithff37e332008-11-24 12:07:55 +0530515 }
516
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700517 ath_print(common, ATH_DBG_CONFIG,
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700518 "tx chmask: %d, rx chmask: %d\n",
Luis R. Rodriguez43c27612009-09-13 21:07:07 -0700519 common->tx_chainmask,
520 common->rx_chainmask);
Sujithff37e332008-11-24 12:07:55 +0530521}
522
523static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
524{
525 struct ath_node *an;
526
527 an = (struct ath_node *)sta->drv_priv;
528
Sujith87792ef2009-03-30 15:28:48 +0530529 if (sc->sc_flags & SC_OP_TXAGGR) {
Sujithff37e332008-11-24 12:07:55 +0530530 ath_tx_node_init(sc, an);
Sujith9e98ac62009-07-23 15:32:34 +0530531 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
Sujith87792ef2009-03-30 15:28:48 +0530532 sta->ht_cap.ampdu_factor);
533 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
Senthil Balasubramaniana59b5a52009-07-14 20:17:07 -0400534 an->last_rssi = ATH_RSSI_DUMMY_MARKER;
Sujith87792ef2009-03-30 15:28:48 +0530535 }
Sujithff37e332008-11-24 12:07:55 +0530536}
537
538static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
539{
540 struct ath_node *an = (struct ath_node *)sta->drv_priv;
541
542 if (sc->sc_flags & SC_OP_TXAGGR)
543 ath_tx_node_cleanup(sc, an);
544}
545
Felix Fietkau347809f2010-07-02 00:09:52 +0200546void ath_hw_check(struct work_struct *work)
547{
548 struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
549 int i;
550
551 ath9k_ps_wakeup(sc);
552
553 for (i = 0; i < 3; i++) {
554 if (ath9k_hw_check_alive(sc->sc_ah))
555 goto out;
556
557 msleep(1);
558 }
559 ath_reset(sc, false);
560
561out:
562 ath9k_ps_restore(sc);
563}
564
Sujith55624202010-01-08 10:36:02 +0530565void ath9k_tasklet(unsigned long data)
Sujithff37e332008-11-24 12:07:55 +0530566{
567 struct ath_softc *sc = (struct ath_softc *)data;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700568 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700569 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -0700570
Sujith17d79042009-02-09 13:27:03 +0530571 u32 status = sc->intrstatus;
Felix Fietkaub5c804752010-04-15 17:38:48 -0400572 u32 rxmask;
Sujithff37e332008-11-24 12:07:55 +0530573
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400574 ath9k_ps_wakeup(sc);
575
Felix Fietkau347809f2010-07-02 00:09:52 +0200576 if (status & ATH9K_INT_FATAL) {
Sujithff37e332008-11-24 12:07:55 +0530577 ath_reset(sc, false);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400578 ath9k_ps_restore(sc);
Sujithff37e332008-11-24 12:07:55 +0530579 return;
Sujithff37e332008-11-24 12:07:55 +0530580 }
581
Felix Fietkau347809f2010-07-02 00:09:52 +0200582 if (!ath9k_hw_check_alive(ah))
583 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
584
Felix Fietkaub5c804752010-04-15 17:38:48 -0400585 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
586 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
587 ATH9K_INT_RXORN);
588 else
589 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
590
591 if (status & rxmask) {
Sujith063d8be2009-03-30 15:28:49 +0530592 spin_lock_bh(&sc->rx.rxflushlock);
Felix Fietkaub5c804752010-04-15 17:38:48 -0400593
594 /* Check for high priority Rx first */
595 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
596 (status & ATH9K_INT_RXHP))
597 ath_rx_tasklet(sc, 0, true);
598
599 ath_rx_tasklet(sc, 0, false);
Sujith063d8be2009-03-30 15:28:49 +0530600 spin_unlock_bh(&sc->rx.rxflushlock);
601 }
602
Vasanthakumar Thiagarajane5003242010-04-15 17:39:36 -0400603 if (status & ATH9K_INT_TX) {
604 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
605 ath_tx_edma_tasklet(sc);
606 else
607 ath_tx_tasklet(sc);
608 }
Sujith063d8be2009-03-30 15:28:49 +0530609
Gabor Juhos96148322009-07-24 17:27:21 +0200610 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
Jouni Malinen54ce8462009-05-19 17:01:40 +0300611 /*
612 * TSF sync does not look correct; remain awake to sync with
613 * the next Beacon.
614 */
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700615 ath_print(common, ATH_DBG_PS,
616 "TSFOOR - Sync with next Beacon\n");
Sujith1b04b932010-01-08 10:36:05 +0530617 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
Jouni Malinen54ce8462009-05-19 17:01:40 +0300618 }
619
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -0700620 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Vasanthakumar Thiagarajanebb8e1d2009-09-01 17:46:32 +0530621 if (status & ATH9K_INT_GENTIMER)
622 ath_gen_timer_isr(sc->sc_ah);
623
Sujithff37e332008-11-24 12:07:55 +0530624 /* re-enable hardware interrupt */
Pavel Roskin30691682010-03-31 18:05:31 -0400625 ath9k_hw_set_interrupts(ah, ah->imask);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400626 ath9k_ps_restore(sc);
Sujithff37e332008-11-24 12:07:55 +0530627}
628
Gabor Juhos6baff7f2009-01-14 20:17:06 +0100629irqreturn_t ath_isr(int irq, void *dev)
Sujithff37e332008-11-24 12:07:55 +0530630{
Sujith063d8be2009-03-30 15:28:49 +0530631#define SCHED_INTR ( \
632 ATH9K_INT_FATAL | \
633 ATH9K_INT_RXORN | \
634 ATH9K_INT_RXEOL | \
635 ATH9K_INT_RX | \
Felix Fietkaub5c804752010-04-15 17:38:48 -0400636 ATH9K_INT_RXLP | \
637 ATH9K_INT_RXHP | \
Sujith063d8be2009-03-30 15:28:49 +0530638 ATH9K_INT_TX | \
639 ATH9K_INT_BMISS | \
640 ATH9K_INT_CST | \
Vasanthakumar Thiagarajanebb8e1d2009-09-01 17:46:32 +0530641 ATH9K_INT_TSFOOR | \
642 ATH9K_INT_GENTIMER)
Sujith063d8be2009-03-30 15:28:49 +0530643
Sujithff37e332008-11-24 12:07:55 +0530644 struct ath_softc *sc = dev;
Sujithcbe61d82009-02-09 13:27:12 +0530645 struct ath_hw *ah = sc->sc_ah;
Sujithff37e332008-11-24 12:07:55 +0530646 enum ath9k_int status;
647 bool sched = false;
648
Sujith063d8be2009-03-30 15:28:49 +0530649 /*
650 * The hardware is not ready/present, don't
651 * touch anything. Note this can happen early
652 * on if the IRQ is shared.
653 */
654 if (sc->sc_flags & SC_OP_INVALID)
655 return IRQ_NONE;
Sujithff37e332008-11-24 12:07:55 +0530656
Sujithff37e332008-11-24 12:07:55 +0530657
Sujith063d8be2009-03-30 15:28:49 +0530658 /* shared irq, not for us */
Sujithff37e332008-11-24 12:07:55 +0530659
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400660 if (!ath9k_hw_intrpend(ah))
Sujith063d8be2009-03-30 15:28:49 +0530661 return IRQ_NONE;
Sujithff37e332008-11-24 12:07:55 +0530662
Sujith063d8be2009-03-30 15:28:49 +0530663 /*
664 * Figure out the reason(s) for the interrupt. Note
665 * that the hal returns a pseudo-ISR that may include
666 * bits we haven't explicitly enabled so we mask the
667 * value to insure we only process bits we requested.
668 */
669 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
Pavel Roskin30691682010-03-31 18:05:31 -0400670 status &= ah->imask; /* discard unasked-for bits */
Sujith063d8be2009-03-30 15:28:49 +0530671
672 /*
673 * If there are no status bits set, then this interrupt was not
674 * for me (should have been caught above).
675 */
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400676 if (!status)
Sujith063d8be2009-03-30 15:28:49 +0530677 return IRQ_NONE;
Sujith063d8be2009-03-30 15:28:49 +0530678
679 /* Cache the status */
680 sc->intrstatus = status;
681
682 if (status & SCHED_INTR)
683 sched = true;
684
685 /*
686 * If a FATAL or RXORN interrupt is received, we have to reset the
687 * chip immediately.
688 */
Felix Fietkaub5c804752010-04-15 17:38:48 -0400689 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
690 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
Sujith063d8be2009-03-30 15:28:49 +0530691 goto chip_reset;
692
Luis R. Rodriguez08578b82010-05-13 13:33:44 -0400693 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
694 (status & ATH9K_INT_BB_WATCHDOG)) {
695 ar9003_hw_bb_watchdog_dbg_info(ah);
696 goto chip_reset;
697 }
698
Sujith063d8be2009-03-30 15:28:49 +0530699 if (status & ATH9K_INT_SWBA)
700 tasklet_schedule(&sc->bcon_tasklet);
701
702 if (status & ATH9K_INT_TXURN)
703 ath9k_hw_updatetxtriglevel(ah, true);
704
Felix Fietkaub5c804752010-04-15 17:38:48 -0400705 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
706 if (status & ATH9K_INT_RXEOL) {
707 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
708 ath9k_hw_set_interrupts(ah, ah->imask);
709 }
710 }
711
Sujith063d8be2009-03-30 15:28:49 +0530712 if (status & ATH9K_INT_MIB) {
713 /*
714 * Disable interrupts until we service the MIB
715 * interrupt; otherwise it will continue to
716 * fire.
717 */
718 ath9k_hw_set_interrupts(ah, 0);
719 /*
720 * Let the hal handle the event. We assume
721 * it will clear whatever condition caused
722 * the interrupt.
723 */
Vasanthakumar Thiagarajan22e66a42009-08-19 16:23:40 +0530724 ath9k_hw_procmibevent(ah);
Pavel Roskin30691682010-03-31 18:05:31 -0400725 ath9k_hw_set_interrupts(ah, ah->imask);
Sujith063d8be2009-03-30 15:28:49 +0530726 }
727
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400728 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
729 if (status & ATH9K_INT_TIM_TIMER) {
Sujith063d8be2009-03-30 15:28:49 +0530730 /* Clear RxAbort bit so that we can
731 * receive frames */
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700732 ath9k_setpower(sc, ATH9K_PM_AWAKE);
Vasanthakumar Thiagarajan153e0802009-05-15 02:47:16 -0400733 ath9k_hw_setrxabort(sc->sc_ah, 0);
Sujith1b04b932010-01-08 10:36:05 +0530734 sc->ps_flags |= PS_WAIT_FOR_BEACON;
Sujith063d8be2009-03-30 15:28:49 +0530735 }
Sujith063d8be2009-03-30 15:28:49 +0530736
737chip_reset:
738
Sujith817e11d2008-12-07 21:42:44 +0530739 ath_debug_stat_interrupt(sc, status);
740
Sujithff37e332008-11-24 12:07:55 +0530741 if (sched) {
742 /* turn off every interrupt except SWBA */
Pavel Roskin30691682010-03-31 18:05:31 -0400743 ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
Sujithff37e332008-11-24 12:07:55 +0530744 tasklet_schedule(&sc->intr_tq);
745 }
746
747 return IRQ_HANDLED;
Sujith063d8be2009-03-30 15:28:49 +0530748
749#undef SCHED_INTR
Sujithff37e332008-11-24 12:07:55 +0530750}
751
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700752static u32 ath_get_extchanmode(struct ath_softc *sc,
Sujith99405f92008-11-24 12:08:35 +0530753 struct ieee80211_channel *chan,
Sujith094d05d2008-12-12 11:57:43 +0530754 enum nl80211_channel_type channel_type)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700755{
756 u32 chanmode = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700757
758 switch (chan->band) {
759 case IEEE80211_BAND_2GHZ:
Sujith094d05d2008-12-12 11:57:43 +0530760 switch(channel_type) {
761 case NL80211_CHAN_NO_HT:
762 case NL80211_CHAN_HT20:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700763 chanmode = CHANNEL_G_HT20;
Sujith094d05d2008-12-12 11:57:43 +0530764 break;
765 case NL80211_CHAN_HT40PLUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700766 chanmode = CHANNEL_G_HT40PLUS;
Sujith094d05d2008-12-12 11:57:43 +0530767 break;
768 case NL80211_CHAN_HT40MINUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700769 chanmode = CHANNEL_G_HT40MINUS;
Sujith094d05d2008-12-12 11:57:43 +0530770 break;
771 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700772 break;
773 case IEEE80211_BAND_5GHZ:
Sujith094d05d2008-12-12 11:57:43 +0530774 switch(channel_type) {
775 case NL80211_CHAN_NO_HT:
776 case NL80211_CHAN_HT20:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700777 chanmode = CHANNEL_A_HT20;
Sujith094d05d2008-12-12 11:57:43 +0530778 break;
779 case NL80211_CHAN_HT40PLUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700780 chanmode = CHANNEL_A_HT40PLUS;
Sujith094d05d2008-12-12 11:57:43 +0530781 break;
782 case NL80211_CHAN_HT40MINUS:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700783 chanmode = CHANNEL_A_HT40MINUS;
Sujith094d05d2008-12-12 11:57:43 +0530784 break;
785 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -0700786 break;
787 default:
788 break;
789 }
790
791 return chanmode;
792}
793
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530794static void ath9k_bss_assoc_info(struct ath_softc *sc,
Sujith5640b082008-10-29 10:16:06 +0530795 struct ieee80211_vif *vif,
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530796 struct ieee80211_bss_conf *bss_conf)
797{
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -0700798 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700799 struct ath_common *common = ath9k_hw_common(ah);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530800
801 if (bss_conf->assoc) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700802 ath_print(common, ATH_DBG_CONFIG,
803 "Bss Info ASSOC %d, bssid: %pM\n",
804 bss_conf->aid, common->curbssid);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530805
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530806 /* New association, store aid */
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700807 common->curaid = bss_conf->aid;
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -0700808 ath9k_hw_write_associd(ah);
Jouni Malinenccdfeab2009-05-20 21:59:08 +0300809
Senthil Balasubramanian2664f202009-06-24 18:56:39 +0530810 /*
811 * Request a re-configuration of Beacon related timers
812 * on the receipt of the first Beacon frame (i.e.,
813 * after time sync with the AP).
814 */
Sujith1b04b932010-01-08 10:36:05 +0530815 sc->ps_flags |= PS_BEACON_SYNC;
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530816
817 /* Configure the beacon */
Jouni Malinen2c3db3d2009-03-03 19:23:26 +0200818 ath_beacon_config(sc, vif);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530819
820 /* Reset rssi stats */
Vasanthakumar Thiagarajan22e66a42009-08-19 16:23:40 +0530821 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530822
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -0700823 sc->sc_flags |= SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800824 ath_start_ani(common);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530825 } else {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700826 ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
Luis R. Rodriguez15107182009-09-10 09:22:37 -0700827 common->curaid = 0;
Senthil Balasubramanianf38faa32009-06-24 18:56:40 +0530828 /* Stop ANI */
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -0700829 sc->sc_flags &= ~SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -0800830 del_timer_sync(&common->ani.timer);
Vasanthakumar Thiagarajan8feceb62008-09-10 18:49:27 +0530831 }
832}
833
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800834void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530835{
Sujithcbe61d82009-02-09 13:27:12 +0530836 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700837 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800838 struct ieee80211_channel *channel = hw->conf.channel;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800839 int r;
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530840
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530841 ath9k_ps_wakeup(sc);
Vivek Natarajan93b1b372009-09-17 09:24:58 +0530842 ath9k_hw_configpcipowersave(ah, 0, 0);
Sujithd2f5b3a2009-04-13 21:56:25 +0530843
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530844 if (!ah->curchan)
845 ah->curchan = ath_get_curchannel(sc, sc->hw);
846
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530847 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200848 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800849 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700850 ath_print(common, ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500851 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700852 "reset status %d\n",
853 channel->center_freq, r);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530854 }
855 spin_unlock_bh(&sc->sc_resetlock);
856
857 ath_update_txpow(sc);
858 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700859 ath_print(common, ATH_DBG_FATAL,
860 "Unable to restart recv logic\n");
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530861 return;
862 }
863
864 if (sc->sc_flags & SC_OP_BEACONS)
Jouni Malinen2c3db3d2009-03-03 19:23:26 +0200865 ath_beacon_config(sc, NULL); /* restart beacons */
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530866
867 /* Re-Enable interrupts */
Pavel Roskin30691682010-03-31 18:05:31 -0400868 ath9k_hw_set_interrupts(ah, ah->imask);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530869
870 /* Enable LED */
Vivek Natarajan08fc5c12009-08-14 11:30:52 +0530871 ath9k_hw_cfg_output(ah, ah->led_pin,
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530872 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
Vivek Natarajan08fc5c12009-08-14 11:30:52 +0530873 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530874
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800875 ieee80211_wake_queues(hw);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530876 ath9k_ps_restore(sc);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530877}
878
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800879void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530880{
Sujithcbe61d82009-02-09 13:27:12 +0530881 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800882 struct ieee80211_channel *channel = hw->conf.channel;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800883 int r;
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530884
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530885 ath9k_ps_wakeup(sc);
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800886 ieee80211_stop_queues(hw);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530887
Vivek Natarajan982723d2010-06-23 12:08:29 +0530888 /*
889 * Keep the LED on when the radio is disabled
890 * during idle unassociated state.
891 */
892 if (!sc->ps_idle) {
893 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
894 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
895 }
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530896
897 /* Disable interrupts */
898 ath9k_hw_set_interrupts(ah, 0);
899
Sujith043a0402009-01-16 21:38:47 +0530900 ath_drain_all_txq(sc, false); /* clear pending tx frames */
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530901 ath_stoprecv(sc); /* turn off frame recv */
902 ath_flushrecv(sc); /* flush recv queue */
903
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530904 if (!ah->curchan)
Luis R. Rodriguez68a89112009-11-02 14:35:42 -0800905 ah->curchan = ath_get_curchannel(sc, hw);
Vasanthakumar Thiagarajan159cd462009-06-13 14:50:25 +0530906
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530907 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200908 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800909 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700910 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
Pavel Roskinf643e512010-01-29 17:22:12 -0500911 "Unable to reset channel (%u MHz), "
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700912 "reset status %d\n",
913 channel->center_freq, r);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530914 }
915 spin_unlock_bh(&sc->sc_resetlock);
916
917 ath9k_hw_phy_disable(ah);
Vivek Natarajan93b1b372009-09-17 09:24:58 +0530918 ath9k_hw_configpcipowersave(ah, 1, 1);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +0530919 ath9k_ps_restore(sc);
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -0700920 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
Vasanthakumar Thiagarajan500c0642008-09-10 18:50:17 +0530921}
922
Sujithff37e332008-11-24 12:07:55 +0530923int ath_reset(struct ath_softc *sc, bool retry_tx)
924{
Sujithcbe61d82009-02-09 13:27:12 +0530925 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700926 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguez030bb492008-12-23 15:58:37 -0800927 struct ieee80211_hw *hw = sc->hw;
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800928 int r;
Sujithff37e332008-11-24 12:07:55 +0530929
Sujith2ab81d42009-12-14 16:34:56 +0530930 /* Stop ANI */
931 del_timer_sync(&common->ani.timer);
932
Sujithcc9c3782010-01-08 10:36:09 +0530933 ieee80211_stop_queues(hw);
934
Sujithff37e332008-11-24 12:07:55 +0530935 ath9k_hw_set_interrupts(ah, 0);
Sujith043a0402009-01-16 21:38:47 +0530936 ath_drain_all_txq(sc, retry_tx);
Sujithff37e332008-11-24 12:07:55 +0530937 ath_stoprecv(sc);
938 ath_flushrecv(sc);
939
940 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +0200941 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800942 if (r)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700943 ath_print(common, ATH_DBG_FATAL,
944 "Unable to reset hardware; reset status %d\n", r);
Sujithff37e332008-11-24 12:07:55 +0530945 spin_unlock_bh(&sc->sc_resetlock);
946
947 if (ath_startrecv(sc) != 0)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -0700948 ath_print(common, ATH_DBG_FATAL,
949 "Unable to start recv logic\n");
Sujithff37e332008-11-24 12:07:55 +0530950
951 /*
952 * We may be doing a reset in response to a request
953 * that changes the channel so update any state that
954 * might change as a result.
955 */
Luis R. Rodriguezce111ba2008-12-23 15:58:39 -0800956 ath_cache_conf_rate(sc, &hw->conf);
Sujithff37e332008-11-24 12:07:55 +0530957
958 ath_update_txpow(sc);
959
Luis R. Rodriguez52b8ac92010-09-16 15:12:27 -0400960 if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
Jouni Malinen2c3db3d2009-03-03 19:23:26 +0200961 ath_beacon_config(sc, NULL); /* restart beacons */
Sujithff37e332008-11-24 12:07:55 +0530962
Pavel Roskin30691682010-03-31 18:05:31 -0400963 ath9k_hw_set_interrupts(ah, ah->imask);
Sujithff37e332008-11-24 12:07:55 +0530964
965 if (retry_tx) {
966 int i;
967 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
968 if (ATH_TXQ_SETUP(sc, i)) {
Sujithb77f4832008-12-07 21:44:03 +0530969 spin_lock_bh(&sc->tx.txq[i].axq_lock);
970 ath_txq_schedule(sc, &sc->tx.txq[i]);
971 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
Sujithff37e332008-11-24 12:07:55 +0530972 }
973 }
974 }
975
Sujithcc9c3782010-01-08 10:36:09 +0530976 ieee80211_wake_queues(hw);
977
Sujith2ab81d42009-12-14 16:34:56 +0530978 /* Start ANI */
979 ath_start_ani(common);
980
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -0800981 return r;
Sujithff37e332008-11-24 12:07:55 +0530982}
983
Felix Fietkauebe297c2010-06-12 00:33:53 -0400984static int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
Sujithff37e332008-11-24 12:07:55 +0530985{
986 int qnum;
987
988 switch (queue) {
989 case 0:
Felix Fietkau1d2231e2010-06-12 00:33:51 -0400990 qnum = sc->tx.hwq_map[WME_AC_VO];
Sujithff37e332008-11-24 12:07:55 +0530991 break;
992 case 1:
Felix Fietkau1d2231e2010-06-12 00:33:51 -0400993 qnum = sc->tx.hwq_map[WME_AC_VI];
Sujithff37e332008-11-24 12:07:55 +0530994 break;
995 case 2:
Felix Fietkau1d2231e2010-06-12 00:33:51 -0400996 qnum = sc->tx.hwq_map[WME_AC_BE];
Sujithff37e332008-11-24 12:07:55 +0530997 break;
998 case 3:
Felix Fietkau1d2231e2010-06-12 00:33:51 -0400999 qnum = sc->tx.hwq_map[WME_AC_BK];
Sujithff37e332008-11-24 12:07:55 +05301000 break;
1001 default:
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001002 qnum = sc->tx.hwq_map[WME_AC_BE];
Sujithff37e332008-11-24 12:07:55 +05301003 break;
1004 }
1005
1006 return qnum;
1007}
1008
1009int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
1010{
1011 int qnum;
1012
1013 switch (queue) {
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001014 case WME_AC_VO:
Sujithff37e332008-11-24 12:07:55 +05301015 qnum = 0;
1016 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001017 case WME_AC_VI:
Sujithff37e332008-11-24 12:07:55 +05301018 qnum = 1;
1019 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001020 case WME_AC_BE:
Sujithff37e332008-11-24 12:07:55 +05301021 qnum = 2;
1022 break;
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001023 case WME_AC_BK:
Sujithff37e332008-11-24 12:07:55 +05301024 qnum = 3;
1025 break;
1026 default:
1027 qnum = -1;
1028 break;
1029 }
1030
1031 return qnum;
1032}
1033
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001034/* XXX: Remove me once we don't depend on ath9k_channel for all
1035 * this redundant data */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001036void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
1037 struct ath9k_channel *ichan)
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001038{
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001039 struct ieee80211_channel *chan = hw->conf.channel;
1040 struct ieee80211_conf *conf = &hw->conf;
1041
1042 ichan->channel = chan->center_freq;
1043 ichan->chan = chan;
1044
1045 if (chan->band == IEEE80211_BAND_2GHZ) {
1046 ichan->chanmode = CHANNEL_G;
Sujith88132622009-09-03 12:08:53 +05301047 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001048 } else {
1049 ichan->chanmode = CHANNEL_A;
1050 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
1051 }
1052
Luis R. Rodriguez25c56ee2009-09-13 23:04:44 -07001053 if (conf_is_ht(conf))
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001054 ichan->chanmode = ath_get_extchanmode(sc, chan,
1055 conf->channel_type);
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001056}
1057
Sujithff37e332008-11-24 12:07:55 +05301058/**********************/
1059/* mac80211 callbacks */
1060/**********************/
1061
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001062static int ath9k_start(struct ieee80211_hw *hw)
1063{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001064 struct ath_wiphy *aphy = hw->priv;
1065 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001066 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001067 struct ath_common *common = ath9k_hw_common(ah);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001068 struct ieee80211_channel *curchan = hw->conf.channel;
Sujithff37e332008-11-24 12:07:55 +05301069 struct ath9k_channel *init_channel;
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301070 int r;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001071
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001072 ath_print(common, ATH_DBG_CONFIG,
1073 "Starting driver with initial channel: %d MHz\n",
1074 curchan->center_freq);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001075
Sujith141b38b2009-02-04 08:10:07 +05301076 mutex_lock(&sc->mutex);
1077
Jouni Malinen9580a222009-03-03 19:23:33 +02001078 if (ath9k_wiphy_started(sc)) {
1079 if (sc->chan_idx == curchan->hw_value) {
1080 /*
1081 * Already on the operational channel, the new wiphy
1082 * can be marked active.
1083 */
1084 aphy->state = ATH_WIPHY_ACTIVE;
1085 ieee80211_wake_queues(hw);
1086 } else {
1087 /*
1088 * Another wiphy is on another channel, start the new
1089 * wiphy in paused state.
1090 */
1091 aphy->state = ATH_WIPHY_PAUSED;
1092 ieee80211_stop_queues(hw);
1093 }
1094 mutex_unlock(&sc->mutex);
1095 return 0;
1096 }
1097 aphy->state = ATH_WIPHY_ACTIVE;
1098
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001099 /* setup initial channel */
1100
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301101 sc->chan_idx = curchan->hw_value;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001102
Vasanthakumar Thiagarajan82880a72009-06-13 14:50:24 +05301103 init_channel = ath_get_curchannel(sc, hw);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001104
Sujithff37e332008-11-24 12:07:55 +05301105 /* Reset SERDES registers */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001106 ath9k_hw_configpcipowersave(ah, 0, 0);
Sujithff37e332008-11-24 12:07:55 +05301107
1108 /*
1109 * The basic interface to setting the hardware in a good
1110 * state is ``reset''. On return the hardware is known to
1111 * be powered up and with interrupts disabled. This must
1112 * be followed by initialization of the appropriate bits
1113 * and then setup of the interrupt mask.
1114 */
1115 spin_lock_bh(&sc->sc_resetlock);
Felix Fietkau20bd2a02010-07-31 00:12:00 +02001116 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -08001117 if (r) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001118 ath_print(common, ATH_DBG_FATAL,
1119 "Unable to reset hardware; reset status %d "
1120 "(freq %u MHz)\n", r,
1121 curchan->center_freq);
Sujithff37e332008-11-24 12:07:55 +05301122 spin_unlock_bh(&sc->sc_resetlock);
Sujith141b38b2009-02-04 08:10:07 +05301123 goto mutex_unlock;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001124 }
Sujithff37e332008-11-24 12:07:55 +05301125 spin_unlock_bh(&sc->sc_resetlock);
1126
1127 /*
1128 * This is needed only to setup initial state
1129 * but it's best done after a reset.
1130 */
1131 ath_update_txpow(sc);
1132
1133 /*
1134 * Setup the hardware after reset:
1135 * The receive engine is set going.
1136 * Frame transmit is handled entirely
1137 * in the frame output path; there's nothing to do
1138 * here except setup the interrupt mask.
1139 */
1140 if (ath_startrecv(sc) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001141 ath_print(common, ATH_DBG_FATAL,
1142 "Unable to start recv logic\n");
Sujith141b38b2009-02-04 08:10:07 +05301143 r = -EIO;
1144 goto mutex_unlock;
Sujithff37e332008-11-24 12:07:55 +05301145 }
1146
1147 /* Setup our intr mask. */
Felix Fietkaub5c804752010-04-15 17:38:48 -04001148 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1149 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1150 ATH9K_INT_GLOBAL;
1151
1152 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
Luis R. Rodriguez08578b82010-05-13 13:33:44 -04001153 ah->imask |= ATH9K_INT_RXHP |
1154 ATH9K_INT_RXLP |
1155 ATH9K_INT_BB_WATCHDOG;
Felix Fietkaub5c804752010-04-15 17:38:48 -04001156 else
1157 ah->imask |= ATH9K_INT_RX;
Sujithff37e332008-11-24 12:07:55 +05301158
Felix Fietkau364734f2010-09-14 20:22:44 +02001159 ah->imask |= ATH9K_INT_GTT;
Sujithff37e332008-11-24 12:07:55 +05301160
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001161 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
Pavel Roskin30691682010-03-31 18:05:31 -04001162 ah->imask |= ATH9K_INT_CST;
Sujithff37e332008-11-24 12:07:55 +05301163
Luis R. Rodriguezce111ba2008-12-23 15:58:39 -08001164 ath_cache_conf_rate(sc, &hw->conf);
Sujithff37e332008-11-24 12:07:55 +05301165
1166 sc->sc_flags &= ~SC_OP_INVALID;
1167
1168 /* Disable BMISS interrupt when we're not associated */
Pavel Roskin30691682010-03-31 18:05:31 -04001169 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1170 ath9k_hw_set_interrupts(ah, ah->imask);
Sujithff37e332008-11-24 12:07:55 +05301171
Jouni Malinenbce048d2009-03-03 19:23:28 +02001172 ieee80211_wake_queues(hw);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001173
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001174 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
Senthil Balasubramanian164ace32009-07-14 20:17:09 -04001175
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001176 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1177 !ah->btcoex_hw.enabled) {
Luis R. Rodriguez5e197292009-09-09 15:15:55 -07001178 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1179 AR_STOMP_LOW_WLAN_WGHT);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001180 ath9k_hw_btcoex_enable(ah);
Vasanthakumar Thiagarajanf985ad12009-08-26 21:08:43 +05301181
Luis R. Rodriguez5bb12792009-09-14 00:55:09 -07001182 if (common->bus_ops->bt_coex_prep)
1183 common->bus_ops->bt_coex_prep(common);
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001184 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Luis R. Rodriguez75d78392009-09-09 04:00:10 -07001185 ath9k_btcoex_timer_resume(sc);
Vasanthakumar Thiagarajan17739122009-08-26 21:08:50 +05301186 }
1187
Sujith141b38b2009-02-04 08:10:07 +05301188mutex_unlock:
1189 mutex_unlock(&sc->mutex);
1190
Luis R. Rodriguezae8d2852008-12-23 15:58:40 -08001191 return r;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001192}
1193
1194static int ath9k_tx(struct ieee80211_hw *hw,
1195 struct sk_buff *skb)
1196{
Jouni Malinen147583c2008-08-11 14:01:50 +03001197 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Jouni Malinenbce048d2009-03-03 19:23:28 +02001198 struct ath_wiphy *aphy = hw->priv;
1199 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001200 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Sujith528f0c62008-10-29 10:14:26 +05301201 struct ath_tx_control txctl;
Benoit Papillault1bc14882009-11-24 15:49:18 +01001202 int padpos, padsize;
1203 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
Felix Fietkau84642d62010-06-01 21:33:13 +02001204 int qnum;
Sujith528f0c62008-10-29 10:14:26 +05301205
Jouni Malinen8089cc42009-03-03 19:23:38 +02001206 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001207 ath_print(common, ATH_DBG_XMIT,
1208 "ath9k: %s: TX in unexpected wiphy state "
1209 "%d\n", wiphy_name(hw->wiphy), aphy->state);
Jouni Malinenee166a02009-03-03 19:23:36 +02001210 goto exit;
1211 }
1212
Gabor Juhos96148322009-07-24 17:27:21 +02001213 if (sc->ps_enabled) {
Jouni Malinendc8c4582009-05-19 17:01:42 +03001214 /*
1215 * mac80211 does not set PM field for normal data frames, so we
1216 * need to update that based on the current PS mode.
1217 */
1218 if (ieee80211_is_data(hdr->frame_control) &&
1219 !ieee80211_is_nullfunc(hdr->frame_control) &&
1220 !ieee80211_has_pm(hdr->frame_control)) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001221 ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
1222 "while in PS mode\n");
Jouni Malinendc8c4582009-05-19 17:01:42 +03001223 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1224 }
1225 }
1226
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001227 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1228 /*
1229 * We are using PS-Poll and mac80211 can request TX while in
1230 * power save mode. Need to wake up hardware for the TX to be
1231 * completed and if needed, also for RX of buffered frames.
1232 */
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001233 ath9k_ps_wakeup(sc);
Vasanthakumar Thiagarajanfdf76622010-05-17 18:57:55 -07001234 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1235 ath9k_hw_setrxabort(sc->sc_ah, 0);
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001236 if (ieee80211_is_pspoll(hdr->frame_control)) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001237 ath_print(common, ATH_DBG_PS,
1238 "Sending PS-Poll to pick a buffered frame\n");
Sujith1b04b932010-01-08 10:36:05 +05301239 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001240 } else {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001241 ath_print(common, ATH_DBG_PS,
1242 "Wake up to complete TX\n");
Sujith1b04b932010-01-08 10:36:05 +05301243 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
Jouni Malinen9a23f9c2009-05-19 17:01:38 +03001244 }
1245 /*
1246 * The actual restore operation will happen only after
1247 * the sc_flags bit is cleared. We are just dropping
1248 * the ps_usecount here.
1249 */
1250 ath9k_ps_restore(sc);
1251 }
1252
Sujith528f0c62008-10-29 10:14:26 +05301253 memset(&txctl, 0, sizeof(struct ath_tx_control));
Jouni Malinen147583c2008-08-11 14:01:50 +03001254
1255 /*
1256 * As a temporary workaround, assign seq# here; this will likely need
1257 * to be cleaned up to work better with Beacon transmission and virtual
1258 * BSSes.
1259 */
1260 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
Jouni Malinen147583c2008-08-11 14:01:50 +03001261 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
Sujithb77f4832008-12-07 21:44:03 +05301262 sc->tx.seq_no += 0x10;
Jouni Malinen147583c2008-08-11 14:01:50 +03001263 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
Sujithb77f4832008-12-07 21:44:03 +05301264 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
Jouni Malinen147583c2008-08-11 14:01:50 +03001265 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001266
1267 /* Add the padding after the header if this is not already done */
Benoit Papillault1bc14882009-11-24 15:49:18 +01001268 padpos = ath9k_cmn_padpos(hdr->frame_control);
1269 padsize = padpos & 3;
1270 if (padsize && skb->len>padpos) {
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001271 if (skb_headroom(skb) < padsize)
1272 return -1;
1273 skb_push(skb, padsize);
Benoit Papillault1bc14882009-11-24 15:49:18 +01001274 memmove(skb->data, skb->data + padsize, padpos);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001275 }
1276
Felix Fietkau84642d62010-06-01 21:33:13 +02001277 qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
1278 txctl.txq = &sc->tx.txq[qnum];
Sujith528f0c62008-10-29 10:14:26 +05301279
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001280 ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001281
Jouni Malinenc52f33d2009-03-03 19:23:29 +02001282 if (ath_tx_start(hw, skb, &txctl) != 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001283 ath_print(common, ATH_DBG_XMIT, "TX failed\n");
Sujith528f0c62008-10-29 10:14:26 +05301284 goto exit;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001285 }
1286
1287 return 0;
Sujith528f0c62008-10-29 10:14:26 +05301288exit:
1289 dev_kfree_skb_any(skb);
1290 return 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001291}
1292
1293static void ath9k_stop(struct ieee80211_hw *hw)
1294{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001295 struct ath_wiphy *aphy = hw->priv;
1296 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001297 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001298 struct ath_common *common = ath9k_hw_common(ah);
Rajkumar Manoharan447a42c2010-07-08 12:12:29 +05301299 int i;
Sujith9c84b792008-10-29 10:17:13 +05301300
Sujith4c483812009-08-18 10:51:52 +05301301 mutex_lock(&sc->mutex);
1302
Jouni Malinen9580a222009-03-03 19:23:33 +02001303 aphy->state = ATH_WIPHY_INACTIVE;
1304
Vivek Natarajan9a75c2f2010-06-22 11:52:37 +05301305 if (led_blink)
1306 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1307
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001308 cancel_delayed_work_sync(&sc->tx_complete_work);
Felix Fietkau9f42c2b2010-06-12 00:34:01 -04001309 cancel_work_sync(&sc->paprd_work);
Felix Fietkau347809f2010-07-02 00:09:52 +02001310 cancel_work_sync(&sc->hw_check_work);
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001311
Rajkumar Manoharan447a42c2010-07-08 12:12:29 +05301312 for (i = 0; i < sc->num_sec_wiphy; i++) {
1313 if (sc->sec_wiphy[i])
1314 break;
1315 }
1316
1317 if (i == sc->num_sec_wiphy) {
Luis R. Rodriguezc94dbff2009-07-27 11:53:04 -07001318 cancel_delayed_work_sync(&sc->wiphy_work);
1319 cancel_work_sync(&sc->chan_work);
1320 }
1321
Sujith9c84b792008-10-29 10:17:13 +05301322 if (sc->sc_flags & SC_OP_INVALID) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001323 ath_print(common, ATH_DBG_ANY, "Device not present\n");
Sujith4c483812009-08-18 10:51:52 +05301324 mutex_unlock(&sc->mutex);
Sujith9c84b792008-10-29 10:17:13 +05301325 return;
1326 }
1327
Jouni Malinen9580a222009-03-03 19:23:33 +02001328 if (ath9k_wiphy_started(sc)) {
1329 mutex_unlock(&sc->mutex);
1330 return; /* another wiphy still in use */
1331 }
1332
Sujith3867cf62009-12-23 20:03:27 -05001333 /* Ensure HW is awake when we try to shut it down. */
1334 ath9k_ps_wakeup(sc);
1335
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001336 if (ah->btcoex_hw.enabled) {
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001337 ath9k_hw_btcoex_disable(ah);
Luis R. Rodriguez766ec4a2009-09-09 14:52:02 -07001338 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
Luis R. Rodriguez75d78392009-09-09 04:00:10 -07001339 ath9k_btcoex_timer_pause(sc);
Vasanthakumar Thiagarajan17739122009-08-26 21:08:50 +05301340 }
1341
Sujithff37e332008-11-24 12:07:55 +05301342 /* make sure h/w will not generate any interrupt
1343 * before setting the invalid flag. */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001344 ath9k_hw_set_interrupts(ah, 0);
Sujithff37e332008-11-24 12:07:55 +05301345
1346 if (!(sc->sc_flags & SC_OP_INVALID)) {
Sujith043a0402009-01-16 21:38:47 +05301347 ath_drain_all_txq(sc, false);
Sujithff37e332008-11-24 12:07:55 +05301348 ath_stoprecv(sc);
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001349 ath9k_hw_phy_disable(ah);
Sujithff37e332008-11-24 12:07:55 +05301350 } else
Sujithb77f4832008-12-07 21:44:03 +05301351 sc->rx.rxlink = NULL;
Sujithff37e332008-11-24 12:07:55 +05301352
Sujithff37e332008-11-24 12:07:55 +05301353 /* disable HAL and put h/w to sleep */
Luis R. Rodriguezaf03abe2009-09-09 02:33:11 -07001354 ath9k_hw_disable(ah);
1355 ath9k_hw_configpcipowersave(ah, 1, 1);
Sujith3867cf62009-12-23 20:03:27 -05001356 ath9k_ps_restore(sc);
1357
1358 /* Finally, put the chip in FULL SLEEP mode */
Luis R. Rodriguez9ecdef42009-09-09 21:10:09 -07001359 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
Sujithff37e332008-11-24 12:07:55 +05301360
1361 sc->sc_flags |= SC_OP_INVALID;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001362
Sujith141b38b2009-02-04 08:10:07 +05301363 mutex_unlock(&sc->mutex);
1364
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001365 ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001366}
1367
1368static int ath9k_add_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001369 struct ieee80211_vif *vif)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001370{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001371 struct ath_wiphy *aphy = hw->priv;
1372 struct ath_softc *sc = aphy->sc;
Pavel Roskin30691682010-03-31 18:05:31 -04001373 struct ath_hw *ah = sc->sc_ah;
1374 struct ath_common *common = ath9k_hw_common(ah);
Johannes Berg1ed32e42009-12-23 13:15:45 +01001375 struct ath_vif *avp = (void *)vif->drv_priv;
Colin McCabed97809d2008-12-01 13:38:55 -08001376 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001377 int ret = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001378
Sujith141b38b2009-02-04 08:10:07 +05301379 mutex_lock(&sc->mutex);
1380
Johannes Berg1ed32e42009-12-23 13:15:45 +01001381 switch (vif->type) {
Johannes Berg05c914f2008-09-11 00:01:58 +02001382 case NL80211_IFTYPE_STATION:
Colin McCabed97809d2008-12-01 13:38:55 -08001383 ic_opmode = NL80211_IFTYPE_STATION;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001384 break;
Johannes Berg05c914f2008-09-11 00:01:58 +02001385 case NL80211_IFTYPE_ADHOC:
Johannes Berg05c914f2008-09-11 00:01:58 +02001386 case NL80211_IFTYPE_AP:
Pat Erley9cb54122009-03-20 22:59:59 -04001387 case NL80211_IFTYPE_MESH_POINT:
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001388 if (sc->nbcnvifs >= ATH_BCBUF) {
1389 ret = -ENOBUFS;
1390 goto out;
1391 }
Johannes Berg1ed32e42009-12-23 13:15:45 +01001392 ic_opmode = vif->type;
Jouni Malinen2ad67de2008-08-11 14:01:47 +03001393 break;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001394 default:
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001395 ath_print(common, ATH_DBG_FATAL,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001396 "Interface type %d not yet supported\n", vif->type);
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001397 ret = -EOPNOTSUPP;
1398 goto out;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001399 }
1400
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001401 ath_print(common, ATH_DBG_CONFIG,
1402 "Attach a VIF of type: %d\n", ic_opmode);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001403
Sujith17d79042009-02-09 13:27:03 +05301404 /* Set the VIF opmode */
Sujith5640b082008-10-29 10:16:06 +05301405 avp->av_opmode = ic_opmode;
1406 avp->av_bslot = -1;
1407
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001408 sc->nvifs++;
Jouni Malinen8ca21f02009-03-03 19:23:27 +02001409
Felix Fietkau364734f2010-09-14 20:22:44 +02001410 ath9k_set_bssid_mask(hw, vif);
Jouni Malinen8ca21f02009-03-03 19:23:27 +02001411
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001412 if (sc->nvifs > 1)
1413 goto out; /* skip global settings for secondary vif */
1414
Sujithb238e902009-03-03 10:16:56 +05301415 if (ic_opmode == NL80211_IFTYPE_AP) {
Pavel Roskin30691682010-03-31 18:05:31 -04001416 ath9k_hw_set_tsfadjust(ah, 1);
Sujithb238e902009-03-03 10:16:56 +05301417 sc->sc_flags |= SC_OP_TSF_RESET;
1418 }
Sujith5640b082008-10-29 10:16:06 +05301419
Sujith5640b082008-10-29 10:16:06 +05301420 /* Set the device opmode */
Pavel Roskin30691682010-03-31 18:05:31 -04001421 ah->opmode = ic_opmode;
Sujith5640b082008-10-29 10:16:06 +05301422
Vivek Natarajan4e30ffa2009-01-28 20:53:27 +05301423 /*
1424 * Enable MIB interrupts when there are hardware phy counters.
1425 * Note we only do this (at the moment) for station mode.
1426 */
Johannes Berg1ed32e42009-12-23 13:15:45 +01001427 if ((vif->type == NL80211_IFTYPE_STATION) ||
1428 (vif->type == NL80211_IFTYPE_ADHOC) ||
1429 (vif->type == NL80211_IFTYPE_MESH_POINT)) {
Luis R. Rodriguez3448f912010-04-15 17:38:23 -04001430 if (ah->config.enable_ani)
1431 ah->imask |= ATH9K_INT_MIB;
Pavel Roskin30691682010-03-31 18:05:31 -04001432 ah->imask |= ATH9K_INT_TSFOOR;
Sujith4af9cf42009-02-12 10:06:47 +05301433 }
1434
Pavel Roskin30691682010-03-31 18:05:31 -04001435 ath9k_hw_set_interrupts(ah, ah->imask);
Vivek Natarajan4e30ffa2009-01-28 20:53:27 +05301436
Johannes Berg1ed32e42009-12-23 13:15:45 +01001437 if (vif->type == NL80211_IFTYPE_AP ||
1438 vif->type == NL80211_IFTYPE_ADHOC ||
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001439 vif->type == NL80211_IFTYPE_MONITOR) {
1440 sc->sc_flags |= SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -08001441 ath_start_ani(common);
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001442 }
Luis R. Rodriguez6f255422008-10-03 15:45:27 -07001443
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001444out:
Sujith141b38b2009-02-04 08:10:07 +05301445 mutex_unlock(&sc->mutex);
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001446 return ret;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001447}
1448
1449static void ath9k_remove_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +01001450 struct ieee80211_vif *vif)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001451{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001452 struct ath_wiphy *aphy = hw->priv;
1453 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001454 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Johannes Berg1ed32e42009-12-23 13:15:45 +01001455 struct ath_vif *avp = (void *)vif->drv_priv;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001456 int i;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001457
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001458 ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001459
Sujith141b38b2009-02-04 08:10:07 +05301460 mutex_lock(&sc->mutex);
1461
Luis R. Rodriguez6f255422008-10-03 15:45:27 -07001462 /* Stop ANI */
Vasanthakumar Thiagarajan6c3118e2010-06-23 06:49:21 -07001463 sc->sc_flags &= ~SC_OP_ANI_RUN;
Luis R. Rodriguez3d536ac2009-11-03 17:07:04 -08001464 del_timer_sync(&common->ani.timer);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001465
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001466 /* Reclaim beacon resources */
Pat Erley9cb54122009-03-20 22:59:59 -04001467 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
1468 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
1469 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
Luis R. Rodriguez5f70a882009-12-23 20:03:28 -05001470 ath9k_ps_wakeup(sc);
Sujithb77f4832008-12-07 21:44:03 +05301471 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
Luis R. Rodriguez5f70a882009-12-23 20:03:28 -05001472 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001473 }
1474
Felix Fietkau74401772010-01-19 20:51:32 +01001475 ath_beacon_return(sc, avp);
Sujith672840a2008-08-11 14:05:08 +05301476 sc->sc_flags &= ~SC_OP_BEACONS;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001477
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001478 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
Johannes Berg1ed32e42009-12-23 13:15:45 +01001479 if (sc->beacon.bslot[i] == vif) {
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001480 printk(KERN_DEBUG "%s: vif had allocated beacon "
1481 "slot\n", __func__);
1482 sc->beacon.bslot[i] = NULL;
Jouni Malinenc52f33d2009-03-03 19:23:29 +02001483 sc->beacon.bslot_aphy[i] = NULL;
Jouni Malinen2c3db3d2009-03-03 19:23:26 +02001484 }
1485 }
1486
Sujith17d79042009-02-09 13:27:03 +05301487 sc->nvifs--;
Sujith141b38b2009-02-04 08:10:07 +05301488
1489 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001490}
1491
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301492void ath9k_enable_ps(struct ath_softc *sc)
1493{
Pavel Roskin30691682010-03-31 18:05:31 -04001494 struct ath_hw *ah = sc->sc_ah;
1495
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301496 sc->ps_enabled = true;
Pavel Roskin30691682010-03-31 18:05:31 -04001497 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1498 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1499 ah->imask |= ATH9K_INT_TIM_TIMER;
1500 ath9k_hw_set_interrupts(ah, ah->imask);
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301501 }
Vasanthakumar Thiagarajanfdf76622010-05-17 18:57:55 -07001502 ath9k_hw_setrxabort(ah, 1);
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301503 }
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301504}
1505
Johannes Berge8975582008-10-09 12:18:51 +02001506static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001507{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001508 struct ath_wiphy *aphy = hw->priv;
1509 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001510 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Johannes Berge8975582008-10-09 12:18:51 +02001511 struct ieee80211_conf *conf = &hw->conf;
Vivek Natarajan8782b412009-03-30 14:17:00 +05301512 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001513 bool disable_radio;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001514
Sujithaa33de02008-12-18 11:40:16 +05301515 mutex_lock(&sc->mutex);
Sujith141b38b2009-02-04 08:10:07 +05301516
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001517 /*
1518 * Leave this as the first check because we need to turn on the
1519 * radio if it was disabled before prior to processing the rest
1520 * of the changes. Likewise we must only disable the radio towards
1521 * the end.
1522 */
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001523 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001524 bool enable_radio;
1525 bool all_wiphys_idle;
1526 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001527
1528 spin_lock_bh(&sc->wiphy_lock);
1529 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001530 ath9k_set_wiphy_idle(aphy, idle);
1531
Felix Fietkau11446012010-04-06 12:05:01 -07001532 enable_radio = (!idle && all_wiphys_idle);
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001533
1534 /*
1535 * After we unlock here its possible another wiphy
1536 * can be re-renabled so to account for that we will
1537 * only disable the radio toward the end of this routine
1538 * if by then all wiphys are still idle.
1539 */
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001540 spin_unlock_bh(&sc->wiphy_lock);
1541
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001542 if (enable_radio) {
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +05301543 sc->ps_idle = false;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -08001544 ath_radio_enable(sc, hw);
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001545 ath_print(common, ATH_DBG_CONFIG,
1546 "not-idle: enabling radio\n");
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001547 }
1548 }
1549
Luis R. Rodrigueze7824a52009-11-24 02:53:25 -05001550 /*
1551 * We just prepare to enable PS. We have to wait until our AP has
1552 * ACK'd our null data frame to disable RX otherwise we'll ignore
1553 * those ACKs and end up retransmitting the same null data frames.
1554 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1555 */
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301556 if (changed & IEEE80211_CONF_CHANGE_PS) {
Luis R. Rodriguez8ab2cd02010-09-16 15:12:26 -04001557 unsigned long flags;
1558 spin_lock_irqsave(&sc->sc_pm_lock, flags);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301559 if (conf->flags & IEEE80211_CONF_PS) {
Sujith1b04b932010-01-08 10:36:05 +05301560 sc->ps_flags |= PS_ENABLED;
Luis R. Rodrigueze7824a52009-11-24 02:53:25 -05001561 /*
1562 * At this point we know hardware has received an ACK
1563 * of a previously sent null data frame.
1564 */
Sujith1b04b932010-01-08 10:36:05 +05301565 if ((sc->ps_flags & PS_NULLFUNC_COMPLETED)) {
1566 sc->ps_flags &= ~PS_NULLFUNC_COMPLETED;
Senthil Balasubramanian3f7c5c12010-02-03 22:51:13 +05301567 ath9k_enable_ps(sc);
Luis R. Rodrigueze7824a52009-11-24 02:53:25 -05001568 }
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301569 } else {
Gabor Juhos96148322009-07-24 17:27:21 +02001570 sc->ps_enabled = false;
Sujith1b04b932010-01-08 10:36:05 +05301571 sc->ps_flags &= ~(PS_ENABLED |
1572 PS_NULLFUNC_COMPLETED);
Luis R. Rodriguez8ab2cd02010-09-16 15:12:26 -04001573 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
Vivek Natarajan8782b412009-03-30 14:17:00 +05301574 if (!(ah->caps.hw_caps &
1575 ATH9K_HW_CAP_AUTOSLEEP)) {
1576 ath9k_hw_setrxabort(sc->sc_ah, 0);
Sujith1b04b932010-01-08 10:36:05 +05301577 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1578 PS_WAIT_FOR_CAB |
1579 PS_WAIT_FOR_PSPOLL_DATA |
1580 PS_WAIT_FOR_TX_ACK);
Pavel Roskin30691682010-03-31 18:05:31 -04001581 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1582 ah->imask &= ~ATH9K_INT_TIM_TIMER;
Vivek Natarajan8782b412009-03-30 14:17:00 +05301583 ath9k_hw_set_interrupts(sc->sc_ah,
Pavel Roskin30691682010-03-31 18:05:31 -04001584 ah->imask);
Vivek Natarajan8782b412009-03-30 14:17:00 +05301585 }
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301586 }
1587 }
Luis R. Rodriguez8ab2cd02010-09-16 15:12:26 -04001588 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301589 }
1590
Sujith199afd92010-01-08 10:36:13 +05301591 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1592 if (conf->flags & IEEE80211_CONF_MONITOR) {
1593 ath_print(common, ATH_DBG_CONFIG,
1594 "HW opmode set to Monitor mode\n");
1595 sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
1596 }
1597 }
1598
Johannes Berg47979382009-01-07 10:13:27 +01001599 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
Sujith99405f92008-11-24 12:08:35 +05301600 struct ieee80211_channel *curchan = hw->conf.channel;
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001601 int pos = curchan->hw_value;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001602
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001603 aphy->chan_idx = pos;
1604 aphy->chan_is_ht = conf_is_ht(conf);
Felix Fietkau5ee08652010-07-31 00:11:59 +02001605 if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1606 sc->sc_flags |= SC_OP_OFFCHANNEL;
1607 else
1608 sc->sc_flags &= ~SC_OP_OFFCHANNEL;
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001609
Jouni Malinen8089cc42009-03-03 19:23:38 +02001610 if (aphy->state == ATH_WIPHY_SCAN ||
1611 aphy->state == ATH_WIPHY_ACTIVE)
1612 ath9k_wiphy_pause_all_forced(sc, aphy);
1613 else {
1614 /*
1615 * Do not change operational channel based on a paused
1616 * wiphy changes.
1617 */
1618 goto skip_chan_change;
1619 }
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001620
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001621 ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1622 curchan->center_freq);
Johannes Bergae5eb022008-10-14 16:58:37 +02001623
Luis R. Rodriguez5f8e0772009-01-22 15:16:48 -08001624 /* XXX: remove me eventualy */
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001625 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
Sujithe11602b2008-11-27 09:46:27 +05301626
Luis R. Rodriguezecf70442008-12-23 15:58:43 -08001627 ath_update_chainmask(sc, conf_is_ht(conf));
Sujith86060f02009-01-07 14:25:29 +05301628
Jouni Malinen0e2dedf2009-03-03 19:23:32 +02001629 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001630 ath_print(common, ATH_DBG_FATAL,
1631 "Unable to set channel\n");
Sujithaa33de02008-12-18 11:40:16 +05301632 mutex_unlock(&sc->mutex);
Sujithe11602b2008-11-27 09:46:27 +05301633 return -EINVAL;
1634 }
Sujith094d05d2008-12-12 11:57:43 +05301635 }
Sujith86b89ee2008-08-07 10:54:57 +05301636
Jouni Malinen8089cc42009-03-03 19:23:38 +02001637skip_chan_change:
Luis R. Rodriguezc9f6a652010-01-19 14:04:19 -05001638 if (changed & IEEE80211_CONF_CHANGE_POWER) {
Sujith17d79042009-02-09 13:27:03 +05301639 sc->config.txpowlimit = 2 * conf->power_level;
Luis R. Rodriguezc9f6a652010-01-19 14:04:19 -05001640 ath_update_txpow(sc);
1641 }
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001642
Luis R. Rodriguez194b7c12009-10-29 10:41:15 -07001643 spin_lock_bh(&sc->wiphy_lock);
1644 disable_radio = ath9k_all_wiphys_idle(sc);
1645 spin_unlock_bh(&sc->wiphy_lock);
1646
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001647 if (disable_radio) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001648 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
Vivek Natarajan1dbfd9d2010-01-29 16:56:51 +05301649 sc->ps_idle = true;
Luis R. Rodriguez68a89112009-11-02 14:35:42 -08001650 ath_radio_disable(sc, hw);
Luis R. Rodriguez64839172009-07-14 20:22:53 -04001651 }
1652
Sujithaa33de02008-12-18 11:40:16 +05301653 mutex_unlock(&sc->mutex);
Sujith141b38b2009-02-04 08:10:07 +05301654
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001655 return 0;
1656}
1657
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001658#define SUPPORTED_FILTERS \
1659 (FIF_PROMISC_IN_BSS | \
1660 FIF_ALLMULTI | \
1661 FIF_CONTROL | \
Luis R. Rodriguezaf6a3fc2009-08-08 21:55:16 -04001662 FIF_PSPOLL | \
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001663 FIF_OTHER_BSS | \
1664 FIF_BCN_PRBRESP_PROMISC | \
1665 FIF_FCSFAIL)
1666
Sujith7dcfdcd2008-08-11 14:03:13 +05301667/* FIXME: sc->sc_full_reset ? */
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001668static void ath9k_configure_filter(struct ieee80211_hw *hw,
1669 unsigned int changed_flags,
1670 unsigned int *total_flags,
Johannes Berg3ac64be2009-08-17 16:16:53 +02001671 u64 multicast)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001672{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001673 struct ath_wiphy *aphy = hw->priv;
1674 struct ath_softc *sc = aphy->sc;
Sujith7dcfdcd2008-08-11 14:03:13 +05301675 u32 rfilt;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001676
1677 changed_flags &= SUPPORTED_FILTERS;
1678 *total_flags &= SUPPORTED_FILTERS;
1679
Sujithb77f4832008-12-07 21:44:03 +05301680 sc->rx.rxfilter = *total_flags;
Jouni Malinenaa68aea2009-05-19 17:01:41 +03001681 ath9k_ps_wakeup(sc);
Sujith7dcfdcd2008-08-11 14:03:13 +05301682 rfilt = ath_calcrxfilter(sc);
1683 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
Jouni Malinenaa68aea2009-05-19 17:01:41 +03001684 ath9k_ps_restore(sc);
Sujith7dcfdcd2008-08-11 14:03:13 +05301685
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001686 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1687 "Set HW RX filter: 0x%x\n", rfilt);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001688}
1689
Johannes Berg4ca77862010-02-19 19:06:56 +01001690static int ath9k_sta_add(struct ieee80211_hw *hw,
1691 struct ieee80211_vif *vif,
1692 struct ieee80211_sta *sta)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001693{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001694 struct ath_wiphy *aphy = hw->priv;
1695 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001696
Johannes Berg4ca77862010-02-19 19:06:56 +01001697 ath_node_attach(sc, sta);
1698
1699 return 0;
1700}
1701
1702static int ath9k_sta_remove(struct ieee80211_hw *hw,
1703 struct ieee80211_vif *vif,
1704 struct ieee80211_sta *sta)
1705{
1706 struct ath_wiphy *aphy = hw->priv;
1707 struct ath_softc *sc = aphy->sc;
1708
1709 ath_node_detach(sc, sta);
1710
1711 return 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001712}
1713
Sujith141b38b2009-02-04 08:10:07 +05301714static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001715 const struct ieee80211_tx_queue_params *params)
1716{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001717 struct ath_wiphy *aphy = hw->priv;
1718 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001719 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Sujithea9880f2008-08-07 10:53:10 +05301720 struct ath9k_tx_queue_info qi;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001721 int ret = 0, qnum;
1722
1723 if (queue >= WME_NUM_AC)
1724 return 0;
1725
Sujith141b38b2009-02-04 08:10:07 +05301726 mutex_lock(&sc->mutex);
1727
Sujith1ffb0612009-03-30 15:28:46 +05301728 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1729
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001730 qi.tqi_aifs = params->aifs;
1731 qi.tqi_cwmin = params->cw_min;
1732 qi.tqi_cwmax = params->cw_max;
1733 qi.tqi_burstTime = params->txop;
1734 qnum = ath_get_hal_qnum(queue, sc);
1735
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001736 ath_print(common, ATH_DBG_CONFIG,
1737 "Configure tx [queue/halq] [%d/%d], "
1738 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1739 queue, qnum, params->aifs, params->cw_min,
1740 params->cw_max, params->txop);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001741
1742 ret = ath_txq_update(sc, qnum, &qi);
1743 if (ret)
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001744 ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001745
Vivek Natarajan94db2932009-11-25 12:01:54 +05301746 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
Felix Fietkau1d2231e2010-06-12 00:33:51 -04001747 if ((qnum == sc->tx.hwq_map[WME_AC_BE]) && !ret)
Vivek Natarajan94db2932009-11-25 12:01:54 +05301748 ath_beaconq_config(sc);
1749
Sujith141b38b2009-02-04 08:10:07 +05301750 mutex_unlock(&sc->mutex);
1751
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001752 return ret;
1753}
1754
1755static int ath9k_set_key(struct ieee80211_hw *hw,
1756 enum set_key_cmd cmd,
Johannes Bergdc822b52008-12-29 12:55:09 +01001757 struct ieee80211_vif *vif,
1758 struct ieee80211_sta *sta,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001759 struct ieee80211_key_conf *key)
1760{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001761 struct ath_wiphy *aphy = hw->priv;
1762 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001763 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001764 int ret = 0;
1765
Jouni Malinenb3bd89c2009-02-24 13:42:01 +02001766 if (modparam_nohwcrypt)
1767 return -ENOSPC;
1768
Sujith141b38b2009-02-04 08:10:07 +05301769 mutex_lock(&sc->mutex);
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301770 ath9k_ps_wakeup(sc);
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001771 ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001772
1773 switch (cmd) {
1774 case SET_KEY:
Bruno Randolf040e5392010-09-08 16:05:04 +09001775 ret = ath_key_config(common, vif, sta, key);
Jouni Malinen6ace2892008-12-17 13:32:17 +02001776 if (ret >= 0) {
1777 key->hw_key_idx = ret;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001778 /* push IV and Michael MIC generation to stack */
1779 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
Johannes Berg97359d12010-08-10 09:46:38 +02001780 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
Senthil Balasubramanian1b961752008-09-01 19:45:21 +05301781 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
Johannes Berg97359d12010-08-10 09:46:38 +02001782 if (sc->sc_ah->sw_mgmt_crypto &&
1783 key->cipher == WLAN_CIPHER_SUITE_CCMP)
Jouni Malinen0ced0e12009-01-08 13:32:13 +02001784 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
Jouni Malinen6ace2892008-12-17 13:32:17 +02001785 ret = 0;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001786 }
1787 break;
1788 case DISABLE_KEY:
Bruno Randolf040e5392010-09-08 16:05:04 +09001789 ath_key_delete(common, key);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001790 break;
1791 default:
1792 ret = -EINVAL;
1793 }
1794
Vivek Natarajan3cbb5dd2009-01-20 11:17:08 +05301795 ath9k_ps_restore(sc);
Sujith141b38b2009-02-04 08:10:07 +05301796 mutex_unlock(&sc->mutex);
1797
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001798 return ret;
1799}
1800
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001801static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1802 struct ieee80211_vif *vif,
1803 struct ieee80211_bss_conf *bss_conf,
1804 u32 changed)
1805{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001806 struct ath_wiphy *aphy = hw->priv;
1807 struct ath_softc *sc = aphy->sc;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001808 struct ath_hw *ah = sc->sc_ah;
Luis R. Rodriguez15107182009-09-10 09:22:37 -07001809 struct ath_common *common = ath9k_hw_common(ah);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001810 struct ath_vif *avp = (void *)vif->drv_priv;
Felix Fietkau0005baf2010-01-15 02:33:40 +01001811 int slottime;
Sujithc6089cc2009-11-16 11:40:48 +05301812 int error;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001813
Sujith141b38b2009-02-04 08:10:07 +05301814 mutex_lock(&sc->mutex);
1815
Sujithc6089cc2009-11-16 11:40:48 +05301816 if (changed & BSS_CHANGED_BSSID) {
1817 /* Set BSSID */
1818 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1819 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
Luis R. Rodriguez15107182009-09-10 09:22:37 -07001820 common->curaid = 0;
Luis R. Rodriguezf2b21432009-09-10 08:50:20 -07001821 ath9k_hw_write_associd(ah);
Sujithc6089cc2009-11-16 11:40:48 +05301822
1823 /* Set aggregation protection mode parameters */
1824 sc->config.ath_aggr_prot = 0;
1825
1826 /* Only legacy IBSS for now */
1827 if (vif->type == NL80211_IFTYPE_ADHOC)
1828 ath_update_chainmask(sc, 0);
1829
1830 ath_print(common, ATH_DBG_CONFIG,
1831 "BSSID: %pM aid: 0x%x\n",
1832 common->curbssid, common->curaid);
1833
1834 /* need to reconfigure the beacon */
1835 sc->sc_flags &= ~SC_OP_BEACONS ;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001836 }
1837
Sujithc6089cc2009-11-16 11:40:48 +05301838 /* Enable transmission of beacons (AP, IBSS, MESH) */
1839 if ((changed & BSS_CHANGED_BEACON) ||
1840 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
1841 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1842 error = ath_beacon_alloc(aphy, vif);
1843 if (!error)
1844 ath_beacon_config(sc, vif);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001845 }
1846
Felix Fietkau0005baf2010-01-15 02:33:40 +01001847 if (changed & BSS_CHANGED_ERP_SLOT) {
1848 if (bss_conf->use_short_slot)
1849 slottime = 9;
1850 else
1851 slottime = 20;
1852 if (vif->type == NL80211_IFTYPE_AP) {
1853 /*
1854 * Defer update, so that connected stations can adjust
1855 * their settings at the same time.
1856 * See beacon.c for more details
1857 */
1858 sc->beacon.slottime = slottime;
1859 sc->beacon.updateslot = UPDATE;
1860 } else {
1861 ah->slottime = slottime;
1862 ath9k_hw_init_global_settings(ah);
1863 }
1864 }
1865
Sujithc6089cc2009-11-16 11:40:48 +05301866 /* Disable transmission of beacons */
1867 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
1868 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1869
1870 if (changed & BSS_CHANGED_BEACON_INT) {
1871 sc->beacon_interval = bss_conf->beacon_int;
1872 /*
1873 * In case of AP mode, the HW TSF has to be reset
1874 * when the beacon interval changes.
1875 */
1876 if (vif->type == NL80211_IFTYPE_AP) {
1877 sc->sc_flags |= SC_OP_TSF_RESET;
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001878 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001879 error = ath_beacon_alloc(aphy, vif);
1880 if (!error)
1881 ath_beacon_config(sc, vif);
Sujithc6089cc2009-11-16 11:40:48 +05301882 } else {
1883 ath_beacon_config(sc, vif);
Johannes Berg2d0ddec2009-04-23 16:13:26 +02001884 }
1885 }
1886
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001887 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001888 ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
1889 bss_conf->use_short_preamble);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001890 if (bss_conf->use_short_preamble)
Sujith672840a2008-08-11 14:05:08 +05301891 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001892 else
Sujith672840a2008-08-11 14:05:08 +05301893 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001894 }
1895
1896 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001897 ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
1898 bss_conf->use_cts_prot);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001899 if (bss_conf->use_cts_prot &&
1900 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
Sujith672840a2008-08-11 14:05:08 +05301901 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001902 else
Sujith672840a2008-08-11 14:05:08 +05301903 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001904 }
1905
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001906 if (changed & BSS_CHANGED_ASSOC) {
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001907 ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001908 bss_conf->assoc);
Sujith5640b082008-10-29 10:16:06 +05301909 ath9k_bss_assoc_info(sc, vif, bss_conf);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001910 }
Sujith141b38b2009-02-04 08:10:07 +05301911
1912 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001913}
1914
1915static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1916{
1917 u64 tsf;
Jouni Malinenbce048d2009-03-03 19:23:28 +02001918 struct ath_wiphy *aphy = hw->priv;
1919 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001920
Sujith141b38b2009-02-04 08:10:07 +05301921 mutex_lock(&sc->mutex);
1922 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1923 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001924
1925 return tsf;
1926}
1927
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01001928static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1929{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001930 struct ath_wiphy *aphy = hw->priv;
1931 struct ath_softc *sc = aphy->sc;
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01001932
Sujith141b38b2009-02-04 08:10:07 +05301933 mutex_lock(&sc->mutex);
1934 ath9k_hw_settsf64(sc->sc_ah, tsf);
1935 mutex_unlock(&sc->mutex);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01001936}
1937
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001938static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1939{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001940 struct ath_wiphy *aphy = hw->priv;
1941 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001942
Sujith141b38b2009-02-04 08:10:07 +05301943 mutex_lock(&sc->mutex);
Luis R. Rodriguez21526d52009-09-09 20:05:39 -07001944
1945 ath9k_ps_wakeup(sc);
Sujith141b38b2009-02-04 08:10:07 +05301946 ath9k_hw_reset_tsf(sc->sc_ah);
Luis R. Rodriguez21526d52009-09-09 20:05:39 -07001947 ath9k_ps_restore(sc);
1948
Sujith141b38b2009-02-04 08:10:07 +05301949 mutex_unlock(&sc->mutex);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001950}
1951
1952static int ath9k_ampdu_action(struct ieee80211_hw *hw,
Johannes Bergc951ad32009-11-16 12:00:38 +01001953 struct ieee80211_vif *vif,
Sujith141b38b2009-02-04 08:10:07 +05301954 enum ieee80211_ampdu_mlme_action action,
1955 struct ieee80211_sta *sta,
1956 u16 tid, u16 *ssn)
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001957{
Jouni Malinenbce048d2009-03-03 19:23:28 +02001958 struct ath_wiphy *aphy = hw->priv;
1959 struct ath_softc *sc = aphy->sc;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001960 int ret = 0;
1961
Johannes Berg85ad1812010-06-10 10:21:49 +02001962 local_bh_disable();
1963
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001964 switch (action) {
1965 case IEEE80211_AMPDU_RX_START:
Sujithdca3edb2008-10-29 10:19:01 +05301966 if (!(sc->sc_flags & SC_OP_RXAGGR))
1967 ret = -ENOTSUPP;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001968 break;
1969 case IEEE80211_AMPDU_RX_STOP:
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001970 break;
1971 case IEEE80211_AMPDU_TX_START:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001972 ath9k_ps_wakeup(sc);
Felix Fietkau231c3a12010-09-20 19:35:28 +02001973 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1974 if (!ret)
1975 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001976 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001977 break;
1978 case IEEE80211_AMPDU_TX_STOP:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001979 ath9k_ps_wakeup(sc);
Sujithf83da962009-07-23 15:32:37 +05301980 ath_tx_aggr_stop(sc, sta, tid);
Johannes Bergc951ad32009-11-16 12:00:38 +01001981 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001982 ath9k_ps_restore(sc);
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001983 break;
Johannes Bergb1720232009-03-23 17:28:39 +01001984 case IEEE80211_AMPDU_TX_OPERATIONAL:
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001985 ath9k_ps_wakeup(sc);
Sujith8469cde2008-10-29 10:19:28 +05301986 ath_tx_aggr_resume(sc, sta, tid);
Luis R. Rodriguez8b685ba2009-12-23 20:03:29 -05001987 ath9k_ps_restore(sc);
Sujith8469cde2008-10-29 10:19:28 +05301988 break;
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001989 default:
Luis R. Rodriguezc46917b2009-09-13 02:42:02 -07001990 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
1991 "Unknown AMPDU action\n");
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001992 }
1993
Johannes Berg85ad1812010-06-10 10:21:49 +02001994 local_bh_enable();
1995
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07001996 return ret;
1997}
1998
Benoit Papillault62dad5b2010-04-28 00:08:24 +02001999static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
2000 struct survey_info *survey)
2001{
2002 struct ath_wiphy *aphy = hw->priv;
2003 struct ath_softc *sc = aphy->sc;
2004 struct ath_hw *ah = sc->sc_ah;
2005 struct ath_common *common = ath9k_hw_common(ah);
2006 struct ieee80211_conf *conf = &hw->conf;
2007
2008 if (idx != 0)
2009 return -ENOENT;
2010
2011 survey->channel = conf->channel;
2012 survey->filled = SURVEY_INFO_NOISE_DBM;
2013 survey->noise = common->ani.noise_floor;
2014
2015 return 0;
2016}
2017
Sujith0c98de62009-03-03 10:16:45 +05302018static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
2019{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002020 struct ath_wiphy *aphy = hw->priv;
2021 struct ath_softc *sc = aphy->sc;
Sujith0c98de62009-03-03 10:16:45 +05302022
Sujith3d832612009-08-21 12:00:28 +05302023 mutex_lock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002024 if (ath9k_wiphy_scanning(sc)) {
Jouni Malinen8089cc42009-03-03 19:23:38 +02002025 /*
Luis R. Rodriguez30888332010-07-27 16:33:06 -04002026 * There is a race here in mac80211 but fixing it requires
2027 * we revisit how we handle the scan complete callback.
2028 * After mac80211 fixes we will not have configured hardware
2029 * to the home channel nor would we have configured the RX
2030 * filter yet.
Jouni Malinen8089cc42009-03-03 19:23:38 +02002031 */
Sujith3d832612009-08-21 12:00:28 +05302032 mutex_unlock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002033 return;
2034 }
2035
2036 aphy->state = ATH_WIPHY_SCAN;
2037 ath9k_wiphy_pause_all_forced(sc, aphy);
Sujith3d832612009-08-21 12:00:28 +05302038 mutex_unlock(&sc->mutex);
Sujith0c98de62009-03-03 10:16:45 +05302039}
2040
Luis R. Rodriguez30888332010-07-27 16:33:06 -04002041/*
2042 * XXX: this requires a revisit after the driver
2043 * scan_complete gets moved to another place/removed in mac80211.
2044 */
Sujith0c98de62009-03-03 10:16:45 +05302045static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
2046{
Jouni Malinenbce048d2009-03-03 19:23:28 +02002047 struct ath_wiphy *aphy = hw->priv;
2048 struct ath_softc *sc = aphy->sc;
Sujith0c98de62009-03-03 10:16:45 +05302049
Sujith3d832612009-08-21 12:00:28 +05302050 mutex_lock(&sc->mutex);
Jouni Malinen8089cc42009-03-03 19:23:38 +02002051 aphy->state = ATH_WIPHY_ACTIVE;
Sujith3d832612009-08-21 12:00:28 +05302052 mutex_unlock(&sc->mutex);
Sujith0c98de62009-03-03 10:16:45 +05302053}
2054
Felix Fietkaue239d852010-01-15 02:34:58 +01002055static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2056{
2057 struct ath_wiphy *aphy = hw->priv;
2058 struct ath_softc *sc = aphy->sc;
2059 struct ath_hw *ah = sc->sc_ah;
2060
2061 mutex_lock(&sc->mutex);
2062 ah->coverage_class = coverage_class;
2063 ath9k_hw_init_global_settings(ah);
2064 mutex_unlock(&sc->mutex);
2065}
2066
Gabor Juhos6baff7f2009-01-14 20:17:06 +01002067struct ieee80211_ops ath9k_ops = {
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002068 .tx = ath9k_tx,
2069 .start = ath9k_start,
2070 .stop = ath9k_stop,
2071 .add_interface = ath9k_add_interface,
2072 .remove_interface = ath9k_remove_interface,
2073 .config = ath9k_config,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002074 .configure_filter = ath9k_configure_filter,
Johannes Berg4ca77862010-02-19 19:06:56 +01002075 .sta_add = ath9k_sta_add,
2076 .sta_remove = ath9k_sta_remove,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002077 .conf_tx = ath9k_conf_tx,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002078 .bss_info_changed = ath9k_bss_info_changed,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002079 .set_key = ath9k_set_key,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002080 .get_tsf = ath9k_get_tsf,
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +01002081 .set_tsf = ath9k_set_tsf,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002082 .reset_tsf = ath9k_reset_tsf,
Johannes Berg4233df62008-10-13 13:35:05 +02002083 .ampdu_action = ath9k_ampdu_action,
Benoit Papillault62dad5b2010-04-28 00:08:24 +02002084 .get_survey = ath9k_get_survey,
Sujith0c98de62009-03-03 10:16:45 +05302085 .sw_scan_start = ath9k_sw_scan_start,
2086 .sw_scan_complete = ath9k_sw_scan_complete,
Johannes Berg3b319aa2009-06-13 14:50:26 +05302087 .rfkill_poll = ath9k_rfkill_poll_state,
Felix Fietkaue239d852010-01-15 02:34:58 +01002088 .set_coverage_class = ath9k_set_coverage_class,
Luis R. Rodriguezf078f202008-08-04 00:16:41 -07002089};