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Commit | Line | Data |
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f078f209 | 1 | /* |
cee075a2 | 2 | * Copyright (c) 2008-2009 Atheros Communications Inc. |
f078f209 LR |
3 | * |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
f078f209 | 17 | #include <linux/nl80211.h> |
394cf0a1 | 18 | #include "ath9k.h" |
af03abec | 19 | #include "btcoex.h" |
f078f209 | 20 | |
ce111bad LR |
21 | static void ath_cache_conf_rate(struct ath_softc *sc, |
22 | struct ieee80211_conf *conf) | |
ff37e337 | 23 | { |
030bb495 LR |
24 | switch (conf->channel->band) { |
25 | case IEEE80211_BAND_2GHZ: | |
26 | if (conf_is_ht20(conf)) | |
545750d3 | 27 | sc->cur_rate_mode = ATH9K_MODE_11NG_HT20; |
030bb495 | 28 | else if (conf_is_ht40_minus(conf)) |
545750d3 | 29 | sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS; |
030bb495 | 30 | else if (conf_is_ht40_plus(conf)) |
545750d3 | 31 | sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS; |
96742256 | 32 | else |
545750d3 | 33 | sc->cur_rate_mode = ATH9K_MODE_11G; |
030bb495 LR |
34 | break; |
35 | case IEEE80211_BAND_5GHZ: | |
36 | if (conf_is_ht20(conf)) | |
545750d3 | 37 | sc->cur_rate_mode = ATH9K_MODE_11NA_HT20; |
030bb495 | 38 | else if (conf_is_ht40_minus(conf)) |
545750d3 | 39 | sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS; |
030bb495 | 40 | else if (conf_is_ht40_plus(conf)) |
545750d3 | 41 | sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS; |
030bb495 | 42 | else |
545750d3 | 43 | sc->cur_rate_mode = ATH9K_MODE_11A; |
030bb495 LR |
44 | break; |
45 | default: | |
ce111bad | 46 | BUG_ON(1); |
030bb495 LR |
47 | break; |
48 | } | |
ff37e337 S |
49 | } |
50 | ||
51 | static void ath_update_txpow(struct ath_softc *sc) | |
52 | { | |
cbe61d8a | 53 | struct ath_hw *ah = sc->sc_ah; |
ff37e337 S |
54 | u32 txpow; |
55 | ||
17d7904d S |
56 | if (sc->curtxpow != sc->config.txpowlimit) { |
57 | ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit); | |
ff37e337 S |
58 | /* read back in case value is clamped */ |
59 | ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow); | |
17d7904d | 60 | sc->curtxpow = txpow; |
ff37e337 S |
61 | } |
62 | } | |
63 | ||
64 | static u8 parse_mpdudensity(u8 mpdudensity) | |
65 | { | |
66 | /* | |
67 | * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": | |
68 | * 0 for no restriction | |
69 | * 1 for 1/4 us | |
70 | * 2 for 1/2 us | |
71 | * 3 for 1 us | |
72 | * 4 for 2 us | |
73 | * 5 for 4 us | |
74 | * 6 for 8 us | |
75 | * 7 for 16 us | |
76 | */ | |
77 | switch (mpdudensity) { | |
78 | case 0: | |
79 | return 0; | |
80 | case 1: | |
81 | case 2: | |
82 | case 3: | |
83 | /* Our lower layer calculations limit our precision to | |
84 | 1 microsecond */ | |
85 | return 1; | |
86 | case 4: | |
87 | return 2; | |
88 | case 5: | |
89 | return 4; | |
90 | case 6: | |
91 | return 8; | |
92 | case 7: | |
93 | return 16; | |
94 | default: | |
95 | return 0; | |
96 | } | |
97 | } | |
98 | ||
82880a7c VT |
99 | static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc, |
100 | struct ieee80211_hw *hw) | |
101 | { | |
102 | struct ieee80211_channel *curchan = hw->conf.channel; | |
103 | struct ath9k_channel *channel; | |
104 | u8 chan_idx; | |
105 | ||
106 | chan_idx = curchan->hw_value; | |
107 | channel = &sc->sc_ah->channels[chan_idx]; | |
108 | ath9k_update_ichannel(sc, hw, channel); | |
109 | return channel; | |
110 | } | |
111 | ||
55624204 | 112 | bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) |
8c77a569 LR |
113 | { |
114 | unsigned long flags; | |
115 | bool ret; | |
116 | ||
9ecdef4b LR |
117 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
118 | ret = ath9k_hw_setpower(sc->sc_ah, mode); | |
119 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); | |
8c77a569 LR |
120 | |
121 | return ret; | |
122 | } | |
123 | ||
a91d75ae LR |
124 | void ath9k_ps_wakeup(struct ath_softc *sc) |
125 | { | |
126 | unsigned long flags; | |
127 | ||
128 | spin_lock_irqsave(&sc->sc_pm_lock, flags); | |
129 | if (++sc->ps_usecount != 1) | |
130 | goto unlock; | |
131 | ||
9ecdef4b | 132 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
a91d75ae LR |
133 | |
134 | unlock: | |
135 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); | |
136 | } | |
137 | ||
138 | void ath9k_ps_restore(struct ath_softc *sc) | |
139 | { | |
140 | unsigned long flags; | |
141 | ||
142 | spin_lock_irqsave(&sc->sc_pm_lock, flags); | |
143 | if (--sc->ps_usecount != 0) | |
144 | goto unlock; | |
145 | ||
1dbfd9d4 VN |
146 | if (sc->ps_idle) |
147 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); | |
148 | else if (sc->ps_enabled && | |
149 | !(sc->ps_flags & (PS_WAIT_FOR_BEACON | | |
1b04b930 S |
150 | PS_WAIT_FOR_CAB | |
151 | PS_WAIT_FOR_PSPOLL_DATA | | |
152 | PS_WAIT_FOR_TX_ACK))) | |
9ecdef4b | 153 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); |
a91d75ae LR |
154 | |
155 | unlock: | |
156 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); | |
157 | } | |
158 | ||
ff37e337 S |
159 | /* |
160 | * Set/change channels. If the channel is really being changed, it's done | |
161 | * by reseting the chip. To accomplish this we must first cleanup any pending | |
162 | * DMA, then restart stuff. | |
163 | */ | |
0e2dedf9 JM |
164 | int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, |
165 | struct ath9k_channel *hchan) | |
ff37e337 | 166 | { |
cbe61d8a | 167 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 168 | struct ath_common *common = ath9k_hw_common(ah); |
25c56eec | 169 | struct ieee80211_conf *conf = &common->hw->conf; |
ff37e337 | 170 | bool fastcc = true, stopped; |
ae8d2858 LR |
171 | struct ieee80211_channel *channel = hw->conf.channel; |
172 | int r; | |
ff37e337 S |
173 | |
174 | if (sc->sc_flags & SC_OP_INVALID) | |
175 | return -EIO; | |
176 | ||
3cbb5dd7 VN |
177 | ath9k_ps_wakeup(sc); |
178 | ||
c0d7c7af LR |
179 | /* |
180 | * This is only performed if the channel settings have | |
181 | * actually changed. | |
182 | * | |
183 | * To switch channels clear any pending DMA operations; | |
184 | * wait long enough for the RX fifo to drain, reset the | |
185 | * hardware at the new frequency, and then re-enable | |
186 | * the relevant bits of the h/w. | |
187 | */ | |
188 | ath9k_hw_set_interrupts(ah, 0); | |
043a0405 | 189 | ath_drain_all_txq(sc, false); |
c0d7c7af | 190 | stopped = ath_stoprecv(sc); |
ff37e337 | 191 | |
c0d7c7af LR |
192 | /* XXX: do not flush receive queue here. We don't want |
193 | * to flush data frames already in queue because of | |
194 | * changing channel. */ | |
ff37e337 | 195 | |
c0d7c7af LR |
196 | if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) |
197 | fastcc = false; | |
198 | ||
c46917bb | 199 | ath_print(common, ATH_DBG_CONFIG, |
25c56eec | 200 | "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n", |
c46917bb | 201 | sc->sc_ah->curchan->channel, |
25c56eec | 202 | channel->center_freq, conf_is_ht40(conf)); |
ff37e337 | 203 | |
c0d7c7af LR |
204 | spin_lock_bh(&sc->sc_resetlock); |
205 | ||
206 | r = ath9k_hw_reset(ah, hchan, fastcc); | |
207 | if (r) { | |
c46917bb | 208 | ath_print(common, ATH_DBG_FATAL, |
f643e51d | 209 | "Unable to reset channel (%u MHz), " |
c46917bb LR |
210 | "reset status %d\n", |
211 | channel->center_freq, r); | |
c0d7c7af | 212 | spin_unlock_bh(&sc->sc_resetlock); |
3989279c | 213 | goto ps_restore; |
ff37e337 | 214 | } |
c0d7c7af LR |
215 | spin_unlock_bh(&sc->sc_resetlock); |
216 | ||
c0d7c7af LR |
217 | sc->sc_flags &= ~SC_OP_FULL_RESET; |
218 | ||
219 | if (ath_startrecv(sc) != 0) { | |
c46917bb LR |
220 | ath_print(common, ATH_DBG_FATAL, |
221 | "Unable to restart recv logic\n"); | |
3989279c GJ |
222 | r = -EIO; |
223 | goto ps_restore; | |
c0d7c7af LR |
224 | } |
225 | ||
226 | ath_cache_conf_rate(sc, &hw->conf); | |
227 | ath_update_txpow(sc); | |
3069168c | 228 | ath9k_hw_set_interrupts(ah, ah->imask); |
3989279c GJ |
229 | |
230 | ps_restore: | |
3cbb5dd7 | 231 | ath9k_ps_restore(sc); |
3989279c | 232 | return r; |
ff37e337 S |
233 | } |
234 | ||
235 | /* | |
236 | * This routine performs the periodic noise floor calibration function | |
237 | * that is used to adjust and optimize the chip performance. This | |
238 | * takes environmental changes (location, temperature) into account. | |
239 | * When the task is complete, it reschedules itself depending on the | |
240 | * appropriate interval that was calculated. | |
241 | */ | |
55624204 | 242 | void ath_ani_calibrate(unsigned long data) |
ff37e337 | 243 | { |
20977d3e S |
244 | struct ath_softc *sc = (struct ath_softc *)data; |
245 | struct ath_hw *ah = sc->sc_ah; | |
c46917bb | 246 | struct ath_common *common = ath9k_hw_common(ah); |
ff37e337 S |
247 | bool longcal = false; |
248 | bool shortcal = false; | |
249 | bool aniflag = false; | |
250 | unsigned int timestamp = jiffies_to_msecs(jiffies); | |
20977d3e | 251 | u32 cal_interval, short_cal_interval; |
ff37e337 | 252 | |
20977d3e S |
253 | short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ? |
254 | ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL; | |
ff37e337 | 255 | |
1ffc1c61 JM |
256 | /* Only calibrate if awake */ |
257 | if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) | |
258 | goto set_timer; | |
259 | ||
260 | ath9k_ps_wakeup(sc); | |
261 | ||
ff37e337 | 262 | /* Long calibration runs independently of short calibration. */ |
3d536acf | 263 | if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) { |
ff37e337 | 264 | longcal = true; |
c46917bb | 265 | ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies); |
3d536acf | 266 | common->ani.longcal_timer = timestamp; |
ff37e337 S |
267 | } |
268 | ||
17d7904d | 269 | /* Short calibration applies only while caldone is false */ |
3d536acf LR |
270 | if (!common->ani.caldone) { |
271 | if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) { | |
ff37e337 | 272 | shortcal = true; |
c46917bb LR |
273 | ath_print(common, ATH_DBG_ANI, |
274 | "shortcal @%lu\n", jiffies); | |
3d536acf LR |
275 | common->ani.shortcal_timer = timestamp; |
276 | common->ani.resetcal_timer = timestamp; | |
ff37e337 S |
277 | } |
278 | } else { | |
3d536acf | 279 | if ((timestamp - common->ani.resetcal_timer) >= |
ff37e337 | 280 | ATH_RESTART_CALINTERVAL) { |
3d536acf LR |
281 | common->ani.caldone = ath9k_hw_reset_calvalid(ah); |
282 | if (common->ani.caldone) | |
283 | common->ani.resetcal_timer = timestamp; | |
ff37e337 S |
284 | } |
285 | } | |
286 | ||
287 | /* Verify whether we must check ANI */ | |
3d536acf | 288 | if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) { |
ff37e337 | 289 | aniflag = true; |
3d536acf | 290 | common->ani.checkani_timer = timestamp; |
ff37e337 S |
291 | } |
292 | ||
293 | /* Skip all processing if there's nothing to do. */ | |
294 | if (longcal || shortcal || aniflag) { | |
295 | /* Call ANI routine if necessary */ | |
296 | if (aniflag) | |
22e66a4c | 297 | ath9k_hw_ani_monitor(ah, ah->curchan); |
ff37e337 S |
298 | |
299 | /* Perform calibration if necessary */ | |
300 | if (longcal || shortcal) { | |
3d536acf | 301 | common->ani.caldone = |
43c27613 LR |
302 | ath9k_hw_calibrate(ah, |
303 | ah->curchan, | |
304 | common->rx_chainmask, | |
305 | longcal); | |
379f0440 S |
306 | |
307 | if (longcal) | |
3d536acf | 308 | common->ani.noise_floor = ath9k_hw_getchan_noise(ah, |
379f0440 S |
309 | ah->curchan); |
310 | ||
c46917bb LR |
311 | ath_print(common, ATH_DBG_ANI, |
312 | " calibrate chan %u/%x nf: %d\n", | |
313 | ah->curchan->channel, | |
314 | ah->curchan->channelFlags, | |
3d536acf | 315 | common->ani.noise_floor); |
ff37e337 S |
316 | } |
317 | } | |
318 | ||
1ffc1c61 JM |
319 | ath9k_ps_restore(sc); |
320 | ||
20977d3e | 321 | set_timer: |
ff37e337 S |
322 | /* |
323 | * Set timer interval based on previous results. | |
324 | * The interval must be the shortest necessary to satisfy ANI, | |
325 | * short calibration and long calibration. | |
326 | */ | |
aac9207e | 327 | cal_interval = ATH_LONG_CALINTERVAL; |
2660b81a | 328 | if (sc->sc_ah->config.enable_ani) |
aac9207e | 329 | cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); |
3d536acf | 330 | if (!common->ani.caldone) |
20977d3e | 331 | cal_interval = min(cal_interval, (u32)short_cal_interval); |
ff37e337 | 332 | |
3d536acf | 333 | mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval)); |
ff37e337 S |
334 | } |
335 | ||
3d536acf | 336 | static void ath_start_ani(struct ath_common *common) |
415f738e S |
337 | { |
338 | unsigned long timestamp = jiffies_to_msecs(jiffies); | |
339 | ||
3d536acf LR |
340 | common->ani.longcal_timer = timestamp; |
341 | common->ani.shortcal_timer = timestamp; | |
342 | common->ani.checkani_timer = timestamp; | |
415f738e | 343 | |
3d536acf | 344 | mod_timer(&common->ani.timer, |
415f738e S |
345 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
346 | } | |
347 | ||
ff37e337 S |
348 | /* |
349 | * Update tx/rx chainmask. For legacy association, | |
350 | * hard code chainmask to 1x1, for 11n association, use | |
c97c92d9 VT |
351 | * the chainmask configuration, for bt coexistence, use |
352 | * the chainmask configuration even in legacy mode. | |
ff37e337 | 353 | */ |
0e2dedf9 | 354 | void ath_update_chainmask(struct ath_softc *sc, int is_ht) |
ff37e337 | 355 | { |
af03abec | 356 | struct ath_hw *ah = sc->sc_ah; |
43c27613 | 357 | struct ath_common *common = ath9k_hw_common(ah); |
af03abec | 358 | |
3d832611 | 359 | if ((sc->sc_flags & SC_OP_SCANNING) || is_ht || |
766ec4a9 | 360 | (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) { |
43c27613 LR |
361 | common->tx_chainmask = ah->caps.tx_chainmask; |
362 | common->rx_chainmask = ah->caps.rx_chainmask; | |
ff37e337 | 363 | } else { |
43c27613 LR |
364 | common->tx_chainmask = 1; |
365 | common->rx_chainmask = 1; | |
ff37e337 S |
366 | } |
367 | ||
43c27613 | 368 | ath_print(common, ATH_DBG_CONFIG, |
c46917bb | 369 | "tx chmask: %d, rx chmask: %d\n", |
43c27613 LR |
370 | common->tx_chainmask, |
371 | common->rx_chainmask); | |
ff37e337 S |
372 | } |
373 | ||
374 | static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
375 | { | |
376 | struct ath_node *an; | |
377 | ||
378 | an = (struct ath_node *)sta->drv_priv; | |
379 | ||
87792efc | 380 | if (sc->sc_flags & SC_OP_TXAGGR) { |
ff37e337 | 381 | ath_tx_node_init(sc, an); |
9e98ac65 | 382 | an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + |
87792efc S |
383 | sta->ht_cap.ampdu_factor); |
384 | an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density); | |
a59b5a5e | 385 | an->last_rssi = ATH_RSSI_DUMMY_MARKER; |
87792efc | 386 | } |
ff37e337 S |
387 | } |
388 | ||
389 | static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
390 | { | |
391 | struct ath_node *an = (struct ath_node *)sta->drv_priv; | |
392 | ||
393 | if (sc->sc_flags & SC_OP_TXAGGR) | |
394 | ath_tx_node_cleanup(sc, an); | |
395 | } | |
396 | ||
55624204 | 397 | void ath9k_tasklet(unsigned long data) |
ff37e337 S |
398 | { |
399 | struct ath_softc *sc = (struct ath_softc *)data; | |
af03abec | 400 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 401 | struct ath_common *common = ath9k_hw_common(ah); |
af03abec | 402 | |
17d7904d | 403 | u32 status = sc->intrstatus; |
b5c80475 | 404 | u32 rxmask; |
ff37e337 | 405 | |
153e080d VT |
406 | ath9k_ps_wakeup(sc); |
407 | ||
c9c99e5e FF |
408 | if ((status & ATH9K_INT_FATAL) || |
409 | !ath9k_hw_check_alive(ah)) { | |
ff37e337 | 410 | ath_reset(sc, false); |
153e080d | 411 | ath9k_ps_restore(sc); |
ff37e337 | 412 | return; |
063d8be3 | 413 | } |
ff37e337 | 414 | |
b5c80475 FF |
415 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
416 | rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL | | |
417 | ATH9K_INT_RXORN); | |
418 | else | |
419 | rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN); | |
420 | ||
421 | if (status & rxmask) { | |
063d8be3 | 422 | spin_lock_bh(&sc->rx.rxflushlock); |
b5c80475 FF |
423 | |
424 | /* Check for high priority Rx first */ | |
425 | if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && | |
426 | (status & ATH9K_INT_RXHP)) | |
427 | ath_rx_tasklet(sc, 0, true); | |
428 | ||
429 | ath_rx_tasklet(sc, 0, false); | |
063d8be3 | 430 | spin_unlock_bh(&sc->rx.rxflushlock); |
ff37e337 S |
431 | } |
432 | ||
e5003249 VT |
433 | if (status & ATH9K_INT_TX) { |
434 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) | |
435 | ath_tx_edma_tasklet(sc); | |
436 | else | |
437 | ath_tx_tasklet(sc); | |
438 | } | |
063d8be3 | 439 | |
96148326 | 440 | if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) { |
54ce846e JM |
441 | /* |
442 | * TSF sync does not look correct; remain awake to sync with | |
443 | * the next Beacon. | |
444 | */ | |
c46917bb LR |
445 | ath_print(common, ATH_DBG_PS, |
446 | "TSFOOR - Sync with next Beacon\n"); | |
1b04b930 | 447 | sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; |
54ce846e JM |
448 | } |
449 | ||
766ec4a9 | 450 | if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
ebb8e1d7 VT |
451 | if (status & ATH9K_INT_GENTIMER) |
452 | ath_gen_timer_isr(sc->sc_ah); | |
453 | ||
ff37e337 | 454 | /* re-enable hardware interrupt */ |
3069168c | 455 | ath9k_hw_set_interrupts(ah, ah->imask); |
153e080d | 456 | ath9k_ps_restore(sc); |
ff37e337 S |
457 | } |
458 | ||
6baff7f9 | 459 | irqreturn_t ath_isr(int irq, void *dev) |
ff37e337 | 460 | { |
063d8be3 S |
461 | #define SCHED_INTR ( \ |
462 | ATH9K_INT_FATAL | \ | |
463 | ATH9K_INT_RXORN | \ | |
464 | ATH9K_INT_RXEOL | \ | |
465 | ATH9K_INT_RX | \ | |
b5c80475 FF |
466 | ATH9K_INT_RXLP | \ |
467 | ATH9K_INT_RXHP | \ | |
063d8be3 S |
468 | ATH9K_INT_TX | \ |
469 | ATH9K_INT_BMISS | \ | |
470 | ATH9K_INT_CST | \ | |
ebb8e1d7 VT |
471 | ATH9K_INT_TSFOOR | \ |
472 | ATH9K_INT_GENTIMER) | |
063d8be3 | 473 | |
ff37e337 | 474 | struct ath_softc *sc = dev; |
cbe61d8a | 475 | struct ath_hw *ah = sc->sc_ah; |
ff37e337 S |
476 | enum ath9k_int status; |
477 | bool sched = false; | |
478 | ||
063d8be3 S |
479 | /* |
480 | * The hardware is not ready/present, don't | |
481 | * touch anything. Note this can happen early | |
482 | * on if the IRQ is shared. | |
483 | */ | |
484 | if (sc->sc_flags & SC_OP_INVALID) | |
485 | return IRQ_NONE; | |
ff37e337 | 486 | |
063d8be3 S |
487 | |
488 | /* shared irq, not for us */ | |
489 | ||
153e080d | 490 | if (!ath9k_hw_intrpend(ah)) |
063d8be3 | 491 | return IRQ_NONE; |
063d8be3 S |
492 | |
493 | /* | |
494 | * Figure out the reason(s) for the interrupt. Note | |
495 | * that the hal returns a pseudo-ISR that may include | |
496 | * bits we haven't explicitly enabled so we mask the | |
497 | * value to insure we only process bits we requested. | |
498 | */ | |
499 | ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ | |
3069168c | 500 | status &= ah->imask; /* discard unasked-for bits */ |
ff37e337 | 501 | |
063d8be3 S |
502 | /* |
503 | * If there are no status bits set, then this interrupt was not | |
504 | * for me (should have been caught above). | |
505 | */ | |
153e080d | 506 | if (!status) |
063d8be3 | 507 | return IRQ_NONE; |
ff37e337 | 508 | |
063d8be3 S |
509 | /* Cache the status */ |
510 | sc->intrstatus = status; | |
511 | ||
512 | if (status & SCHED_INTR) | |
513 | sched = true; | |
514 | ||
515 | /* | |
516 | * If a FATAL or RXORN interrupt is received, we have to reset the | |
517 | * chip immediately. | |
518 | */ | |
b5c80475 FF |
519 | if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) && |
520 | !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))) | |
063d8be3 S |
521 | goto chip_reset; |
522 | ||
523 | if (status & ATH9K_INT_SWBA) | |
524 | tasklet_schedule(&sc->bcon_tasklet); | |
525 | ||
526 | if (status & ATH9K_INT_TXURN) | |
527 | ath9k_hw_updatetxtriglevel(ah, true); | |
528 | ||
b5c80475 FF |
529 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { |
530 | if (status & ATH9K_INT_RXEOL) { | |
531 | ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); | |
532 | ath9k_hw_set_interrupts(ah, ah->imask); | |
533 | } | |
534 | } | |
535 | ||
063d8be3 | 536 | if (status & ATH9K_INT_MIB) { |
ff37e337 | 537 | /* |
063d8be3 S |
538 | * Disable interrupts until we service the MIB |
539 | * interrupt; otherwise it will continue to | |
540 | * fire. | |
ff37e337 | 541 | */ |
063d8be3 S |
542 | ath9k_hw_set_interrupts(ah, 0); |
543 | /* | |
544 | * Let the hal handle the event. We assume | |
545 | * it will clear whatever condition caused | |
546 | * the interrupt. | |
547 | */ | |
22e66a4c | 548 | ath9k_hw_procmibevent(ah); |
3069168c | 549 | ath9k_hw_set_interrupts(ah, ah->imask); |
063d8be3 | 550 | } |
ff37e337 | 551 | |
153e080d VT |
552 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
553 | if (status & ATH9K_INT_TIM_TIMER) { | |
063d8be3 S |
554 | /* Clear RxAbort bit so that we can |
555 | * receive frames */ | |
9ecdef4b | 556 | ath9k_setpower(sc, ATH9K_PM_AWAKE); |
153e080d | 557 | ath9k_hw_setrxabort(sc->sc_ah, 0); |
1b04b930 | 558 | sc->ps_flags |= PS_WAIT_FOR_BEACON; |
ff37e337 | 559 | } |
063d8be3 S |
560 | |
561 | chip_reset: | |
ff37e337 | 562 | |
817e11de S |
563 | ath_debug_stat_interrupt(sc, status); |
564 | ||
ff37e337 S |
565 | if (sched) { |
566 | /* turn off every interrupt except SWBA */ | |
3069168c | 567 | ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA)); |
ff37e337 S |
568 | tasklet_schedule(&sc->intr_tq); |
569 | } | |
570 | ||
571 | return IRQ_HANDLED; | |
063d8be3 S |
572 | |
573 | #undef SCHED_INTR | |
ff37e337 S |
574 | } |
575 | ||
f078f209 | 576 | static u32 ath_get_extchanmode(struct ath_softc *sc, |
99405f93 | 577 | struct ieee80211_channel *chan, |
094d05dc | 578 | enum nl80211_channel_type channel_type) |
f078f209 LR |
579 | { |
580 | u32 chanmode = 0; | |
f078f209 LR |
581 | |
582 | switch (chan->band) { | |
583 | case IEEE80211_BAND_2GHZ: | |
094d05dc S |
584 | switch(channel_type) { |
585 | case NL80211_CHAN_NO_HT: | |
586 | case NL80211_CHAN_HT20: | |
f078f209 | 587 | chanmode = CHANNEL_G_HT20; |
094d05dc S |
588 | break; |
589 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 590 | chanmode = CHANNEL_G_HT40PLUS; |
094d05dc S |
591 | break; |
592 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 593 | chanmode = CHANNEL_G_HT40MINUS; |
094d05dc S |
594 | break; |
595 | } | |
f078f209 LR |
596 | break; |
597 | case IEEE80211_BAND_5GHZ: | |
094d05dc S |
598 | switch(channel_type) { |
599 | case NL80211_CHAN_NO_HT: | |
600 | case NL80211_CHAN_HT20: | |
f078f209 | 601 | chanmode = CHANNEL_A_HT20; |
094d05dc S |
602 | break; |
603 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 604 | chanmode = CHANNEL_A_HT40PLUS; |
094d05dc S |
605 | break; |
606 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 607 | chanmode = CHANNEL_A_HT40MINUS; |
094d05dc S |
608 | break; |
609 | } | |
f078f209 LR |
610 | break; |
611 | default: | |
612 | break; | |
613 | } | |
614 | ||
615 | return chanmode; | |
616 | } | |
617 | ||
7e86c104 | 618 | static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key, |
3f53dd64 JM |
619 | struct ath9k_keyval *hk, const u8 *addr, |
620 | bool authenticator) | |
f078f209 | 621 | { |
7e86c104 | 622 | struct ath_hw *ah = common->ah; |
6ace2891 JM |
623 | const u8 *key_rxmic; |
624 | const u8 *key_txmic; | |
f078f209 | 625 | |
6ace2891 JM |
626 | key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; |
627 | key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; | |
f078f209 LR |
628 | |
629 | if (addr == NULL) { | |
d216aaa6 JM |
630 | /* |
631 | * Group key installation - only two key cache entries are used | |
632 | * regardless of splitmic capability since group key is only | |
633 | * used either for TX or RX. | |
634 | */ | |
3f53dd64 JM |
635 | if (authenticator) { |
636 | memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); | |
637 | memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic)); | |
638 | } else { | |
639 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
640 | memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic)); | |
641 | } | |
7e86c104 | 642 | return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr); |
f078f209 | 643 | } |
7e86c104 | 644 | if (!common->splitmic) { |
d216aaa6 | 645 | /* TX and RX keys share the same key cache entry. */ |
f078f209 LR |
646 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
647 | memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic)); | |
7e86c104 | 648 | return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr); |
f078f209 | 649 | } |
d216aaa6 JM |
650 | |
651 | /* Separate key cache entries for TX and RX */ | |
652 | ||
653 | /* TX key goes at first index, RX key at +32. */ | |
f078f209 | 654 | memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); |
7e86c104 | 655 | if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) { |
d216aaa6 | 656 | /* TX MIC entry failed. No need to proceed further */ |
7e86c104 | 657 | ath_print(common, ATH_DBG_FATAL, |
c46917bb | 658 | "Setting TX MIC Key Failed\n"); |
f078f209 LR |
659 | return 0; |
660 | } | |
661 | ||
662 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
663 | /* XXX delete tx key on failure? */ | |
7e86c104 | 664 | return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr); |
6ace2891 JM |
665 | } |
666 | ||
7e86c104 | 667 | static int ath_reserve_key_cache_slot_tkip(struct ath_common *common) |
6ace2891 JM |
668 | { |
669 | int i; | |
670 | ||
7e86c104 LR |
671 | for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) { |
672 | if (test_bit(i, common->keymap) || | |
673 | test_bit(i + 64, common->keymap)) | |
6ace2891 | 674 | continue; /* At least one part of TKIP key allocated */ |
7e86c104 LR |
675 | if (common->splitmic && |
676 | (test_bit(i + 32, common->keymap) || | |
677 | test_bit(i + 64 + 32, common->keymap))) | |
6ace2891 JM |
678 | continue; /* At least one part of TKIP key allocated */ |
679 | ||
680 | /* Found a free slot for a TKIP key */ | |
681 | return i; | |
682 | } | |
683 | return -1; | |
684 | } | |
685 | ||
7e86c104 | 686 | static int ath_reserve_key_cache_slot(struct ath_common *common) |
6ace2891 JM |
687 | { |
688 | int i; | |
689 | ||
690 | /* First, try to find slots that would not be available for TKIP. */ | |
7e86c104 LR |
691 | if (common->splitmic) { |
692 | for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) { | |
693 | if (!test_bit(i, common->keymap) && | |
694 | (test_bit(i + 32, common->keymap) || | |
695 | test_bit(i + 64, common->keymap) || | |
696 | test_bit(i + 64 + 32, common->keymap))) | |
6ace2891 | 697 | return i; |
7e86c104 LR |
698 | if (!test_bit(i + 32, common->keymap) && |
699 | (test_bit(i, common->keymap) || | |
700 | test_bit(i + 64, common->keymap) || | |
701 | test_bit(i + 64 + 32, common->keymap))) | |
6ace2891 | 702 | return i + 32; |
7e86c104 LR |
703 | if (!test_bit(i + 64, common->keymap) && |
704 | (test_bit(i , common->keymap) || | |
705 | test_bit(i + 32, common->keymap) || | |
706 | test_bit(i + 64 + 32, common->keymap))) | |
ea612132 | 707 | return i + 64; |
7e86c104 LR |
708 | if (!test_bit(i + 64 + 32, common->keymap) && |
709 | (test_bit(i, common->keymap) || | |
710 | test_bit(i + 32, common->keymap) || | |
711 | test_bit(i + 64, common->keymap))) | |
ea612132 | 712 | return i + 64 + 32; |
6ace2891 JM |
713 | } |
714 | } else { | |
7e86c104 LR |
715 | for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) { |
716 | if (!test_bit(i, common->keymap) && | |
717 | test_bit(i + 64, common->keymap)) | |
6ace2891 | 718 | return i; |
7e86c104 LR |
719 | if (test_bit(i, common->keymap) && |
720 | !test_bit(i + 64, common->keymap)) | |
6ace2891 JM |
721 | return i + 64; |
722 | } | |
723 | } | |
724 | ||
725 | /* No partially used TKIP slots, pick any available slot */ | |
7e86c104 | 726 | for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) { |
be2864cf JM |
727 | /* Do not allow slots that could be needed for TKIP group keys |
728 | * to be used. This limitation could be removed if we know that | |
729 | * TKIP will not be used. */ | |
730 | if (i >= 64 && i < 64 + IEEE80211_WEP_NKID) | |
731 | continue; | |
7e86c104 | 732 | if (common->splitmic) { |
be2864cf JM |
733 | if (i >= 32 && i < 32 + IEEE80211_WEP_NKID) |
734 | continue; | |
735 | if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID) | |
736 | continue; | |
737 | } | |
738 | ||
7e86c104 | 739 | if (!test_bit(i, common->keymap)) |
6ace2891 JM |
740 | return i; /* Found a free slot for a key */ |
741 | } | |
742 | ||
743 | /* No free slot found */ | |
744 | return -1; | |
f078f209 LR |
745 | } |
746 | ||
7e86c104 | 747 | static int ath_key_config(struct ath_common *common, |
3f53dd64 | 748 | struct ieee80211_vif *vif, |
dc822b5d | 749 | struct ieee80211_sta *sta, |
f078f209 LR |
750 | struct ieee80211_key_conf *key) |
751 | { | |
7e86c104 | 752 | struct ath_hw *ah = common->ah; |
f078f209 LR |
753 | struct ath9k_keyval hk; |
754 | const u8 *mac = NULL; | |
03ceedea | 755 | u8 gmac[ETH_ALEN]; |
f078f209 | 756 | int ret = 0; |
6ace2891 | 757 | int idx; |
f078f209 LR |
758 | |
759 | memset(&hk, 0, sizeof(hk)); | |
760 | ||
761 | switch (key->alg) { | |
762 | case ALG_WEP: | |
763 | hk.kv_type = ATH9K_CIPHER_WEP; | |
764 | break; | |
765 | case ALG_TKIP: | |
766 | hk.kv_type = ATH9K_CIPHER_TKIP; | |
767 | break; | |
768 | case ALG_CCMP: | |
769 | hk.kv_type = ATH9K_CIPHER_AES_CCM; | |
770 | break; | |
771 | default: | |
ca470b29 | 772 | return -EOPNOTSUPP; |
f078f209 LR |
773 | } |
774 | ||
6ace2891 | 775 | hk.kv_len = key->keylen; |
f078f209 LR |
776 | memcpy(hk.kv_val, key->key, key->keylen); |
777 | ||
6ace2891 | 778 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
03ceedea DYM |
779 | |
780 | if (key->ap_addr) { | |
781 | /* | |
782 | * Group keys on hardware that supports multicast frame | |
783 | * key search use a mac that is the sender's address with | |
784 | * the high bit set instead of the app-specified address. | |
785 | */ | |
786 | memcpy(gmac, key->ap_addr, ETH_ALEN); | |
787 | gmac[0] |= 0x80; | |
788 | mac = gmac; | |
789 | ||
790 | if (key->alg == ALG_TKIP) | |
791 | idx = ath_reserve_key_cache_slot_tkip(common); | |
792 | else | |
793 | idx = ath_reserve_key_cache_slot(common); | |
794 | if (idx < 0) | |
795 | mac = NULL; /* no free key cache entries */ | |
796 | } | |
797 | ||
798 | if (!mac) { | |
799 | /* For now, use the default keys for broadcast keys. This may | |
800 | * need to change with virtual interfaces. */ | |
801 | idx = key->keyidx; | |
802 | } | |
6ace2891 | 803 | } else if (key->keyidx) { |
dc822b5d JB |
804 | if (WARN_ON(!sta)) |
805 | return -EOPNOTSUPP; | |
806 | mac = sta->addr; | |
807 | ||
6ace2891 JM |
808 | if (vif->type != NL80211_IFTYPE_AP) { |
809 | /* Only keyidx 0 should be used with unicast key, but | |
810 | * allow this for client mode for now. */ | |
811 | idx = key->keyidx; | |
812 | } else | |
813 | return -EIO; | |
f078f209 | 814 | } else { |
dc822b5d JB |
815 | if (WARN_ON(!sta)) |
816 | return -EOPNOTSUPP; | |
817 | mac = sta->addr; | |
818 | ||
6ace2891 | 819 | if (key->alg == ALG_TKIP) |
7e86c104 | 820 | idx = ath_reserve_key_cache_slot_tkip(common); |
6ace2891 | 821 | else |
7e86c104 | 822 | idx = ath_reserve_key_cache_slot(common); |
6ace2891 | 823 | if (idx < 0) |
ca470b29 | 824 | return -ENOSPC; /* no free key cache entries */ |
f078f209 LR |
825 | } |
826 | ||
827 | if (key->alg == ALG_TKIP) | |
7e86c104 | 828 | ret = ath_setkey_tkip(common, idx, key->key, &hk, mac, |
3f53dd64 | 829 | vif->type == NL80211_IFTYPE_AP); |
f078f209 | 830 | else |
7e86c104 | 831 | ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac); |
f078f209 LR |
832 | |
833 | if (!ret) | |
834 | return -EIO; | |
835 | ||
7e86c104 | 836 | set_bit(idx, common->keymap); |
6ace2891 | 837 | if (key->alg == ALG_TKIP) { |
7e86c104 LR |
838 | set_bit(idx + 64, common->keymap); |
839 | if (common->splitmic) { | |
840 | set_bit(idx + 32, common->keymap); | |
841 | set_bit(idx + 64 + 32, common->keymap); | |
6ace2891 JM |
842 | } |
843 | } | |
844 | ||
845 | return idx; | |
f078f209 LR |
846 | } |
847 | ||
7e86c104 | 848 | static void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key) |
f078f209 | 849 | { |
7e86c104 LR |
850 | struct ath_hw *ah = common->ah; |
851 | ||
852 | ath9k_hw_keyreset(ah, key->hw_key_idx); | |
6ace2891 JM |
853 | if (key->hw_key_idx < IEEE80211_WEP_NKID) |
854 | return; | |
855 | ||
7e86c104 | 856 | clear_bit(key->hw_key_idx, common->keymap); |
6ace2891 JM |
857 | if (key->alg != ALG_TKIP) |
858 | return; | |
f078f209 | 859 | |
7e86c104 LR |
860 | clear_bit(key->hw_key_idx + 64, common->keymap); |
861 | if (common->splitmic) { | |
733da37d | 862 | ath9k_hw_keyreset(ah, key->hw_key_idx + 32); |
7e86c104 LR |
863 | clear_bit(key->hw_key_idx + 32, common->keymap); |
864 | clear_bit(key->hw_key_idx + 64 + 32, common->keymap); | |
6ace2891 | 865 | } |
f078f209 LR |
866 | } |
867 | ||
8feceb67 | 868 | static void ath9k_bss_assoc_info(struct ath_softc *sc, |
5640b08e | 869 | struct ieee80211_vif *vif, |
8feceb67 | 870 | struct ieee80211_bss_conf *bss_conf) |
f078f209 | 871 | { |
f2b2143e | 872 | struct ath_hw *ah = sc->sc_ah; |
1510718d | 873 | struct ath_common *common = ath9k_hw_common(ah); |
f078f209 | 874 | |
8feceb67 | 875 | if (bss_conf->assoc) { |
c46917bb LR |
876 | ath_print(common, ATH_DBG_CONFIG, |
877 | "Bss Info ASSOC %d, bssid: %pM\n", | |
878 | bss_conf->aid, common->curbssid); | |
f078f209 | 879 | |
8feceb67 | 880 | /* New association, store aid */ |
1510718d | 881 | common->curaid = bss_conf->aid; |
f2b2143e | 882 | ath9k_hw_write_associd(ah); |
2664f201 SB |
883 | |
884 | /* | |
885 | * Request a re-configuration of Beacon related timers | |
886 | * on the receipt of the first Beacon frame (i.e., | |
887 | * after time sync with the AP). | |
888 | */ | |
1b04b930 | 889 | sc->ps_flags |= PS_BEACON_SYNC; |
f078f209 | 890 | |
8feceb67 | 891 | /* Configure the beacon */ |
2c3db3d5 | 892 | ath_beacon_config(sc, vif); |
f078f209 | 893 | |
8feceb67 | 894 | /* Reset rssi stats */ |
22e66a4c | 895 | sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
f078f209 | 896 | |
3d536acf | 897 | ath_start_ani(common); |
8feceb67 | 898 | } else { |
c46917bb | 899 | ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n"); |
1510718d | 900 | common->curaid = 0; |
f38faa31 | 901 | /* Stop ANI */ |
3d536acf | 902 | del_timer_sync(&common->ani.timer); |
f078f209 | 903 | } |
8feceb67 | 904 | } |
f078f209 | 905 | |
68a89116 | 906 | void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) |
500c064d | 907 | { |
cbe61d8a | 908 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 909 | struct ath_common *common = ath9k_hw_common(ah); |
68a89116 | 910 | struct ieee80211_channel *channel = hw->conf.channel; |
ae8d2858 | 911 | int r; |
500c064d | 912 | |
3cbb5dd7 | 913 | ath9k_ps_wakeup(sc); |
93b1b37f | 914 | ath9k_hw_configpcipowersave(ah, 0, 0); |
ae8d2858 | 915 | |
159cd468 VT |
916 | if (!ah->curchan) |
917 | ah->curchan = ath_get_curchannel(sc, sc->hw); | |
918 | ||
d2f5b3a6 | 919 | spin_lock_bh(&sc->sc_resetlock); |
2660b81a | 920 | r = ath9k_hw_reset(ah, ah->curchan, false); |
ae8d2858 | 921 | if (r) { |
c46917bb | 922 | ath_print(common, ATH_DBG_FATAL, |
f643e51d | 923 | "Unable to reset channel (%u MHz), " |
c46917bb LR |
924 | "reset status %d\n", |
925 | channel->center_freq, r); | |
500c064d VT |
926 | } |
927 | spin_unlock_bh(&sc->sc_resetlock); | |
928 | ||
929 | ath_update_txpow(sc); | |
930 | if (ath_startrecv(sc) != 0) { | |
c46917bb LR |
931 | ath_print(common, ATH_DBG_FATAL, |
932 | "Unable to restart recv logic\n"); | |
500c064d VT |
933 | return; |
934 | } | |
935 | ||
936 | if (sc->sc_flags & SC_OP_BEACONS) | |
2c3db3d5 | 937 | ath_beacon_config(sc, NULL); /* restart beacons */ |
500c064d VT |
938 | |
939 | /* Re-Enable interrupts */ | |
3069168c | 940 | ath9k_hw_set_interrupts(ah, ah->imask); |
500c064d VT |
941 | |
942 | /* Enable LED */ | |
08fc5c1b | 943 | ath9k_hw_cfg_output(ah, ah->led_pin, |
500c064d | 944 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
08fc5c1b | 945 | ath9k_hw_set_gpio(ah, ah->led_pin, 0); |
500c064d | 946 | |
68a89116 | 947 | ieee80211_wake_queues(hw); |
3cbb5dd7 | 948 | ath9k_ps_restore(sc); |
500c064d VT |
949 | } |
950 | ||
68a89116 | 951 | void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw) |
500c064d | 952 | { |
cbe61d8a | 953 | struct ath_hw *ah = sc->sc_ah; |
68a89116 | 954 | struct ieee80211_channel *channel = hw->conf.channel; |
ae8d2858 | 955 | int r; |
500c064d | 956 | |
3cbb5dd7 | 957 | ath9k_ps_wakeup(sc); |
68a89116 | 958 | ieee80211_stop_queues(hw); |
500c064d VT |
959 | |
960 | /* Disable LED */ | |
08fc5c1b VN |
961 | ath9k_hw_set_gpio(ah, ah->led_pin, 1); |
962 | ath9k_hw_cfg_gpio_input(ah, ah->led_pin); | |
500c064d VT |
963 | |
964 | /* Disable interrupts */ | |
965 | ath9k_hw_set_interrupts(ah, 0); | |
966 | ||
043a0405 | 967 | ath_drain_all_txq(sc, false); /* clear pending tx frames */ |
500c064d VT |
968 | ath_stoprecv(sc); /* turn off frame recv */ |
969 | ath_flushrecv(sc); /* flush recv queue */ | |
970 | ||
159cd468 | 971 | if (!ah->curchan) |
68a89116 | 972 | ah->curchan = ath_get_curchannel(sc, hw); |
159cd468 | 973 | |
500c064d | 974 | spin_lock_bh(&sc->sc_resetlock); |
2660b81a | 975 | r = ath9k_hw_reset(ah, ah->curchan, false); |
ae8d2858 | 976 | if (r) { |
c46917bb | 977 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, |
f643e51d | 978 | "Unable to reset channel (%u MHz), " |
c46917bb LR |
979 | "reset status %d\n", |
980 | channel->center_freq, r); | |
500c064d VT |
981 | } |
982 | spin_unlock_bh(&sc->sc_resetlock); | |
983 | ||
984 | ath9k_hw_phy_disable(ah); | |
93b1b37f | 985 | ath9k_hw_configpcipowersave(ah, 1, 1); |
3cbb5dd7 | 986 | ath9k_ps_restore(sc); |
9ecdef4b | 987 | ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP); |
500c064d VT |
988 | } |
989 | ||
ff37e337 S |
990 | int ath_reset(struct ath_softc *sc, bool retry_tx) |
991 | { | |
cbe61d8a | 992 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 993 | struct ath_common *common = ath9k_hw_common(ah); |
030bb495 | 994 | struct ieee80211_hw *hw = sc->hw; |
ae8d2858 | 995 | int r; |
ff37e337 | 996 | |
2ab81d4a S |
997 | /* Stop ANI */ |
998 | del_timer_sync(&common->ani.timer); | |
999 | ||
cc9c378a S |
1000 | ieee80211_stop_queues(hw); |
1001 | ||
ff37e337 | 1002 | ath9k_hw_set_interrupts(ah, 0); |
043a0405 | 1003 | ath_drain_all_txq(sc, retry_tx); |
ff37e337 S |
1004 | ath_stoprecv(sc); |
1005 | ath_flushrecv(sc); | |
1006 | ||
1007 | spin_lock_bh(&sc->sc_resetlock); | |
2660b81a | 1008 | r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false); |
ae8d2858 | 1009 | if (r) |
c46917bb LR |
1010 | ath_print(common, ATH_DBG_FATAL, |
1011 | "Unable to reset hardware; reset status %d\n", r); | |
ff37e337 S |
1012 | spin_unlock_bh(&sc->sc_resetlock); |
1013 | ||
1014 | if (ath_startrecv(sc) != 0) | |
c46917bb LR |
1015 | ath_print(common, ATH_DBG_FATAL, |
1016 | "Unable to start recv logic\n"); | |
ff37e337 S |
1017 | |
1018 | /* | |
1019 | * We may be doing a reset in response to a request | |
1020 | * that changes the channel so update any state that | |
1021 | * might change as a result. | |
1022 | */ | |
ce111bad | 1023 | ath_cache_conf_rate(sc, &hw->conf); |
ff37e337 S |
1024 | |
1025 | ath_update_txpow(sc); | |
1026 | ||
1027 | if (sc->sc_flags & SC_OP_BEACONS) | |
2c3db3d5 | 1028 | ath_beacon_config(sc, NULL); /* restart beacons */ |
ff37e337 | 1029 | |
3069168c | 1030 | ath9k_hw_set_interrupts(ah, ah->imask); |
ff37e337 S |
1031 | |
1032 | if (retry_tx) { | |
1033 | int i; | |
1034 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { | |
1035 | if (ATH_TXQ_SETUP(sc, i)) { | |
b77f483f S |
1036 | spin_lock_bh(&sc->tx.txq[i].axq_lock); |
1037 | ath_txq_schedule(sc, &sc->tx.txq[i]); | |
1038 | spin_unlock_bh(&sc->tx.txq[i].axq_lock); | |
ff37e337 S |
1039 | } |
1040 | } | |
1041 | } | |
1042 | ||
cc9c378a S |
1043 | ieee80211_wake_queues(hw); |
1044 | ||
2ab81d4a S |
1045 | /* Start ANI */ |
1046 | ath_start_ani(common); | |
1047 | ||
ae8d2858 | 1048 | return r; |
ff37e337 S |
1049 | } |
1050 | ||
ff37e337 S |
1051 | int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) |
1052 | { | |
1053 | int qnum; | |
1054 | ||
1055 | switch (queue) { | |
1056 | case 0: | |
b77f483f | 1057 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO]; |
ff37e337 S |
1058 | break; |
1059 | case 1: | |
b77f483f | 1060 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI]; |
ff37e337 S |
1061 | break; |
1062 | case 2: | |
b77f483f | 1063 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1064 | break; |
1065 | case 3: | |
b77f483f | 1066 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK]; |
ff37e337 S |
1067 | break; |
1068 | default: | |
b77f483f | 1069 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1070 | break; |
1071 | } | |
1072 | ||
1073 | return qnum; | |
1074 | } | |
1075 | ||
1076 | int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) | |
1077 | { | |
1078 | int qnum; | |
1079 | ||
1080 | switch (queue) { | |
1081 | case ATH9K_WME_AC_VO: | |
1082 | qnum = 0; | |
1083 | break; | |
1084 | case ATH9K_WME_AC_VI: | |
1085 | qnum = 1; | |
1086 | break; | |
1087 | case ATH9K_WME_AC_BE: | |
1088 | qnum = 2; | |
1089 | break; | |
1090 | case ATH9K_WME_AC_BK: | |
1091 | qnum = 3; | |
1092 | break; | |
1093 | default: | |
1094 | qnum = -1; | |
1095 | break; | |
1096 | } | |
1097 | ||
1098 | return qnum; | |
1099 | } | |
1100 | ||
5f8e077c LR |
1101 | /* XXX: Remove me once we don't depend on ath9k_channel for all |
1102 | * this redundant data */ | |
0e2dedf9 JM |
1103 | void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw, |
1104 | struct ath9k_channel *ichan) | |
5f8e077c | 1105 | { |
5f8e077c LR |
1106 | struct ieee80211_channel *chan = hw->conf.channel; |
1107 | struct ieee80211_conf *conf = &hw->conf; | |
1108 | ||
1109 | ichan->channel = chan->center_freq; | |
1110 | ichan->chan = chan; | |
1111 | ||
1112 | if (chan->band == IEEE80211_BAND_2GHZ) { | |
1113 | ichan->chanmode = CHANNEL_G; | |
8813262e | 1114 | ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G; |
5f8e077c LR |
1115 | } else { |
1116 | ichan->chanmode = CHANNEL_A; | |
1117 | ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM; | |
1118 | } | |
1119 | ||
25c56eec | 1120 | if (conf_is_ht(conf)) |
5f8e077c LR |
1121 | ichan->chanmode = ath_get_extchanmode(sc, chan, |
1122 | conf->channel_type); | |
5f8e077c LR |
1123 | } |
1124 | ||
ff37e337 S |
1125 | /**********************/ |
1126 | /* mac80211 callbacks */ | |
1127 | /**********************/ | |
1128 | ||
8feceb67 | 1129 | static int ath9k_start(struct ieee80211_hw *hw) |
f078f209 | 1130 | { |
bce048d7 JM |
1131 | struct ath_wiphy *aphy = hw->priv; |
1132 | struct ath_softc *sc = aphy->sc; | |
af03abec | 1133 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 1134 | struct ath_common *common = ath9k_hw_common(ah); |
8feceb67 | 1135 | struct ieee80211_channel *curchan = hw->conf.channel; |
ff37e337 | 1136 | struct ath9k_channel *init_channel; |
82880a7c | 1137 | int r; |
f078f209 | 1138 | |
c46917bb LR |
1139 | ath_print(common, ATH_DBG_CONFIG, |
1140 | "Starting driver with initial channel: %d MHz\n", | |
1141 | curchan->center_freq); | |
f078f209 | 1142 | |
141b38b6 S |
1143 | mutex_lock(&sc->mutex); |
1144 | ||
9580a222 JM |
1145 | if (ath9k_wiphy_started(sc)) { |
1146 | if (sc->chan_idx == curchan->hw_value) { | |
1147 | /* | |
1148 | * Already on the operational channel, the new wiphy | |
1149 | * can be marked active. | |
1150 | */ | |
1151 | aphy->state = ATH_WIPHY_ACTIVE; | |
1152 | ieee80211_wake_queues(hw); | |
1153 | } else { | |
1154 | /* | |
1155 | * Another wiphy is on another channel, start the new | |
1156 | * wiphy in paused state. | |
1157 | */ | |
1158 | aphy->state = ATH_WIPHY_PAUSED; | |
1159 | ieee80211_stop_queues(hw); | |
1160 | } | |
1161 | mutex_unlock(&sc->mutex); | |
1162 | return 0; | |
1163 | } | |
1164 | aphy->state = ATH_WIPHY_ACTIVE; | |
1165 | ||
8feceb67 | 1166 | /* setup initial channel */ |
f078f209 | 1167 | |
82880a7c | 1168 | sc->chan_idx = curchan->hw_value; |
f078f209 | 1169 | |
82880a7c | 1170 | init_channel = ath_get_curchannel(sc, hw); |
ff37e337 S |
1171 | |
1172 | /* Reset SERDES registers */ | |
af03abec | 1173 | ath9k_hw_configpcipowersave(ah, 0, 0); |
ff37e337 S |
1174 | |
1175 | /* | |
1176 | * The basic interface to setting the hardware in a good | |
1177 | * state is ``reset''. On return the hardware is known to | |
1178 | * be powered up and with interrupts disabled. This must | |
1179 | * be followed by initialization of the appropriate bits | |
1180 | * and then setup of the interrupt mask. | |
1181 | */ | |
1182 | spin_lock_bh(&sc->sc_resetlock); | |
af03abec | 1183 | r = ath9k_hw_reset(ah, init_channel, false); |
ae8d2858 | 1184 | if (r) { |
c46917bb LR |
1185 | ath_print(common, ATH_DBG_FATAL, |
1186 | "Unable to reset hardware; reset status %d " | |
1187 | "(freq %u MHz)\n", r, | |
1188 | curchan->center_freq); | |
ff37e337 | 1189 | spin_unlock_bh(&sc->sc_resetlock); |
141b38b6 | 1190 | goto mutex_unlock; |
ff37e337 S |
1191 | } |
1192 | spin_unlock_bh(&sc->sc_resetlock); | |
1193 | ||
1194 | /* | |
1195 | * This is needed only to setup initial state | |
1196 | * but it's best done after a reset. | |
1197 | */ | |
1198 | ath_update_txpow(sc); | |
8feceb67 | 1199 | |
ff37e337 S |
1200 | /* |
1201 | * Setup the hardware after reset: | |
1202 | * The receive engine is set going. | |
1203 | * Frame transmit is handled entirely | |
1204 | * in the frame output path; there's nothing to do | |
1205 | * here except setup the interrupt mask. | |
1206 | */ | |
1207 | if (ath_startrecv(sc) != 0) { | |
c46917bb LR |
1208 | ath_print(common, ATH_DBG_FATAL, |
1209 | "Unable to start recv logic\n"); | |
141b38b6 S |
1210 | r = -EIO; |
1211 | goto mutex_unlock; | |
f078f209 | 1212 | } |
8feceb67 | 1213 | |
ff37e337 | 1214 | /* Setup our intr mask. */ |
b5c80475 FF |
1215 | ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL | |
1216 | ATH9K_INT_RXORN | ATH9K_INT_FATAL | | |
1217 | ATH9K_INT_GLOBAL; | |
1218 | ||
1219 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) | |
1220 | ah->imask |= ATH9K_INT_RXHP | ATH9K_INT_RXLP; | |
1221 | else | |
1222 | ah->imask |= ATH9K_INT_RX; | |
ff37e337 | 1223 | |
af03abec | 1224 | if (ah->caps.hw_caps & ATH9K_HW_CAP_GTT) |
3069168c | 1225 | ah->imask |= ATH9K_INT_GTT; |
ff37e337 | 1226 | |
af03abec | 1227 | if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
3069168c | 1228 | ah->imask |= ATH9K_INT_CST; |
ff37e337 | 1229 | |
ce111bad | 1230 | ath_cache_conf_rate(sc, &hw->conf); |
ff37e337 S |
1231 | |
1232 | sc->sc_flags &= ~SC_OP_INVALID; | |
1233 | ||
1234 | /* Disable BMISS interrupt when we're not associated */ | |
3069168c PR |
1235 | ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
1236 | ath9k_hw_set_interrupts(ah, ah->imask); | |
ff37e337 | 1237 | |
bce048d7 | 1238 | ieee80211_wake_queues(hw); |
ff37e337 | 1239 | |
42935eca | 1240 | ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
164ace38 | 1241 | |
766ec4a9 LR |
1242 | if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) && |
1243 | !ah->btcoex_hw.enabled) { | |
5e197292 LR |
1244 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
1245 | AR_STOMP_LOW_WLAN_WGHT); | |
af03abec | 1246 | ath9k_hw_btcoex_enable(ah); |
f985ad12 | 1247 | |
5bb12791 LR |
1248 | if (common->bus_ops->bt_coex_prep) |
1249 | common->bus_ops->bt_coex_prep(common); | |
766ec4a9 | 1250 | if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
75d7839f | 1251 | ath9k_btcoex_timer_resume(sc); |
1773912b VT |
1252 | } |
1253 | ||
141b38b6 S |
1254 | mutex_unlock: |
1255 | mutex_unlock(&sc->mutex); | |
1256 | ||
ae8d2858 | 1257 | return r; |
f078f209 LR |
1258 | } |
1259 | ||
8feceb67 VT |
1260 | static int ath9k_tx(struct ieee80211_hw *hw, |
1261 | struct sk_buff *skb) | |
f078f209 | 1262 | { |
528f0c6b | 1263 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
bce048d7 JM |
1264 | struct ath_wiphy *aphy = hw->priv; |
1265 | struct ath_softc *sc = aphy->sc; | |
c46917bb | 1266 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
528f0c6b | 1267 | struct ath_tx_control txctl; |
1bc14880 BP |
1268 | int padpos, padsize; |
1269 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
528f0c6b | 1270 | |
8089cc47 | 1271 | if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) { |
c46917bb LR |
1272 | ath_print(common, ATH_DBG_XMIT, |
1273 | "ath9k: %s: TX in unexpected wiphy state " | |
1274 | "%d\n", wiphy_name(hw->wiphy), aphy->state); | |
ee166a0e JM |
1275 | goto exit; |
1276 | } | |
1277 | ||
96148326 | 1278 | if (sc->ps_enabled) { |
dc8c4585 JM |
1279 | /* |
1280 | * mac80211 does not set PM field for normal data frames, so we | |
1281 | * need to update that based on the current PS mode. | |
1282 | */ | |
1283 | if (ieee80211_is_data(hdr->frame_control) && | |
1284 | !ieee80211_is_nullfunc(hdr->frame_control) && | |
1285 | !ieee80211_has_pm(hdr->frame_control)) { | |
c46917bb LR |
1286 | ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame " |
1287 | "while in PS mode\n"); | |
dc8c4585 JM |
1288 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
1289 | } | |
1290 | } | |
1291 | ||
9a23f9ca JM |
1292 | if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) { |
1293 | /* | |
1294 | * We are using PS-Poll and mac80211 can request TX while in | |
1295 | * power save mode. Need to wake up hardware for the TX to be | |
1296 | * completed and if needed, also for RX of buffered frames. | |
1297 | */ | |
9a23f9ca JM |
1298 | ath9k_ps_wakeup(sc); |
1299 | ath9k_hw_setrxabort(sc->sc_ah, 0); | |
1300 | if (ieee80211_is_pspoll(hdr->frame_control)) { | |
c46917bb LR |
1301 | ath_print(common, ATH_DBG_PS, |
1302 | "Sending PS-Poll to pick a buffered frame\n"); | |
1b04b930 | 1303 | sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; |
9a23f9ca | 1304 | } else { |
c46917bb LR |
1305 | ath_print(common, ATH_DBG_PS, |
1306 | "Wake up to complete TX\n"); | |
1b04b930 | 1307 | sc->ps_flags |= PS_WAIT_FOR_TX_ACK; |
9a23f9ca JM |
1308 | } |
1309 | /* | |
1310 | * The actual restore operation will happen only after | |
1311 | * the sc_flags bit is cleared. We are just dropping | |
1312 | * the ps_usecount here. | |
1313 | */ | |
1314 | ath9k_ps_restore(sc); | |
1315 | } | |
1316 | ||
528f0c6b | 1317 | memset(&txctl, 0, sizeof(struct ath_tx_control)); |
f078f209 | 1318 | |
8feceb67 VT |
1319 | /* |
1320 | * As a temporary workaround, assign seq# here; this will likely need | |
1321 | * to be cleaned up to work better with Beacon transmission and virtual | |
1322 | * BSSes. | |
1323 | */ | |
1324 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
8feceb67 | 1325 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
b77f483f | 1326 | sc->tx.seq_no += 0x10; |
8feceb67 | 1327 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
b77f483f | 1328 | hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); |
8feceb67 | 1329 | } |
f078f209 | 1330 | |
8feceb67 | 1331 | /* Add the padding after the header if this is not already done */ |
1bc14880 BP |
1332 | padpos = ath9k_cmn_padpos(hdr->frame_control); |
1333 | padsize = padpos & 3; | |
1334 | if (padsize && skb->len>padpos) { | |
8feceb67 VT |
1335 | if (skb_headroom(skb) < padsize) |
1336 | return -1; | |
1337 | skb_push(skb, padsize); | |
1bc14880 | 1338 | memmove(skb->data, skb->data + padsize, padpos); |
8feceb67 VT |
1339 | } |
1340 | ||
528f0c6b S |
1341 | /* Check if a tx queue is available */ |
1342 | ||
1343 | txctl.txq = ath_test_get_txq(sc, skb); | |
1344 | if (!txctl.txq) | |
1345 | goto exit; | |
1346 | ||
c46917bb | 1347 | ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb); |
8feceb67 | 1348 | |
c52f33d0 | 1349 | if (ath_tx_start(hw, skb, &txctl) != 0) { |
c46917bb | 1350 | ath_print(common, ATH_DBG_XMIT, "TX failed\n"); |
528f0c6b | 1351 | goto exit; |
8feceb67 VT |
1352 | } |
1353 | ||
528f0c6b S |
1354 | return 0; |
1355 | exit: | |
1356 | dev_kfree_skb_any(skb); | |
8feceb67 | 1357 | return 0; |
f078f209 LR |
1358 | } |
1359 | ||
8feceb67 | 1360 | static void ath9k_stop(struct ieee80211_hw *hw) |
f078f209 | 1361 | { |
bce048d7 JM |
1362 | struct ath_wiphy *aphy = hw->priv; |
1363 | struct ath_softc *sc = aphy->sc; | |
af03abec | 1364 | struct ath_hw *ah = sc->sc_ah; |
c46917bb | 1365 | struct ath_common *common = ath9k_hw_common(ah); |
f078f209 | 1366 | |
4c483817 S |
1367 | mutex_lock(&sc->mutex); |
1368 | ||
9580a222 JM |
1369 | aphy->state = ATH_WIPHY_INACTIVE; |
1370 | ||
c94dbff7 LR |
1371 | cancel_delayed_work_sync(&sc->ath_led_blink_work); |
1372 | cancel_delayed_work_sync(&sc->tx_complete_work); | |
1373 | ||
1374 | if (!sc->num_sec_wiphy) { | |
1375 | cancel_delayed_work_sync(&sc->wiphy_work); | |
1376 | cancel_work_sync(&sc->chan_work); | |
1377 | } | |
1378 | ||
9c84b797 | 1379 | if (sc->sc_flags & SC_OP_INVALID) { |
c46917bb | 1380 | ath_print(common, ATH_DBG_ANY, "Device not present\n"); |
4c483817 | 1381 | mutex_unlock(&sc->mutex); |
9c84b797 S |
1382 | return; |
1383 | } | |
8feceb67 | 1384 | |
9580a222 JM |
1385 | if (ath9k_wiphy_started(sc)) { |
1386 | mutex_unlock(&sc->mutex); | |
1387 | return; /* another wiphy still in use */ | |
1388 | } | |
1389 | ||
3867cf6a S |
1390 | /* Ensure HW is awake when we try to shut it down. */ |
1391 | ath9k_ps_wakeup(sc); | |
1392 | ||
766ec4a9 | 1393 | if (ah->btcoex_hw.enabled) { |
af03abec | 1394 | ath9k_hw_btcoex_disable(ah); |
766ec4a9 | 1395 | if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
75d7839f | 1396 | ath9k_btcoex_timer_pause(sc); |
1773912b VT |
1397 | } |
1398 | ||
ff37e337 S |
1399 | /* make sure h/w will not generate any interrupt |
1400 | * before setting the invalid flag. */ | |
af03abec | 1401 | ath9k_hw_set_interrupts(ah, 0); |
ff37e337 S |
1402 | |
1403 | if (!(sc->sc_flags & SC_OP_INVALID)) { | |
043a0405 | 1404 | ath_drain_all_txq(sc, false); |
ff37e337 | 1405 | ath_stoprecv(sc); |
af03abec | 1406 | ath9k_hw_phy_disable(ah); |
ff37e337 | 1407 | } else |
b77f483f | 1408 | sc->rx.rxlink = NULL; |
ff37e337 | 1409 | |
ff37e337 | 1410 | /* disable HAL and put h/w to sleep */ |
af03abec LR |
1411 | ath9k_hw_disable(ah); |
1412 | ath9k_hw_configpcipowersave(ah, 1, 1); | |
3867cf6a S |
1413 | ath9k_ps_restore(sc); |
1414 | ||
1415 | /* Finally, put the chip in FULL SLEEP mode */ | |
9ecdef4b | 1416 | ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP); |
ff37e337 S |
1417 | |
1418 | sc->sc_flags |= SC_OP_INVALID; | |
500c064d | 1419 | |
141b38b6 S |
1420 | mutex_unlock(&sc->mutex); |
1421 | ||
c46917bb | 1422 | ath_print(common, ATH_DBG_CONFIG, "Driver halt\n"); |
f078f209 LR |
1423 | } |
1424 | ||
8feceb67 | 1425 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
1ed32e4f | 1426 | struct ieee80211_vif *vif) |
f078f209 | 1427 | { |
bce048d7 JM |
1428 | struct ath_wiphy *aphy = hw->priv; |
1429 | struct ath_softc *sc = aphy->sc; | |
3069168c PR |
1430 | struct ath_hw *ah = sc->sc_ah; |
1431 | struct ath_common *common = ath9k_hw_common(ah); | |
1ed32e4f | 1432 | struct ath_vif *avp = (void *)vif->drv_priv; |
d97809db | 1433 | enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; |
2c3db3d5 | 1434 | int ret = 0; |
8feceb67 | 1435 | |
141b38b6 S |
1436 | mutex_lock(&sc->mutex); |
1437 | ||
3069168c | 1438 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) && |
8ca21f01 JM |
1439 | sc->nvifs > 0) { |
1440 | ret = -ENOBUFS; | |
1441 | goto out; | |
1442 | } | |
1443 | ||
1ed32e4f | 1444 | switch (vif->type) { |
05c914fe | 1445 | case NL80211_IFTYPE_STATION: |
d97809db | 1446 | ic_opmode = NL80211_IFTYPE_STATION; |
f078f209 | 1447 | break; |
05c914fe | 1448 | case NL80211_IFTYPE_ADHOC: |
05c914fe | 1449 | case NL80211_IFTYPE_AP: |
9cb5412b | 1450 | case NL80211_IFTYPE_MESH_POINT: |
2c3db3d5 JM |
1451 | if (sc->nbcnvifs >= ATH_BCBUF) { |
1452 | ret = -ENOBUFS; | |
1453 | goto out; | |
1454 | } | |
1ed32e4f | 1455 | ic_opmode = vif->type; |
f078f209 LR |
1456 | break; |
1457 | default: | |
c46917bb | 1458 | ath_print(common, ATH_DBG_FATAL, |
1ed32e4f | 1459 | "Interface type %d not yet supported\n", vif->type); |
2c3db3d5 JM |
1460 | ret = -EOPNOTSUPP; |
1461 | goto out; | |
f078f209 LR |
1462 | } |
1463 | ||
c46917bb LR |
1464 | ath_print(common, ATH_DBG_CONFIG, |
1465 | "Attach a VIF of type: %d\n", ic_opmode); | |
8feceb67 | 1466 | |
17d7904d | 1467 | /* Set the VIF opmode */ |
5640b08e S |
1468 | avp->av_opmode = ic_opmode; |
1469 | avp->av_bslot = -1; | |
1470 | ||
2c3db3d5 | 1471 | sc->nvifs++; |
8ca21f01 | 1472 | |
3069168c | 1473 | if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) |
8ca21f01 JM |
1474 | ath9k_set_bssid_mask(hw); |
1475 | ||
2c3db3d5 JM |
1476 | if (sc->nvifs > 1) |
1477 | goto out; /* skip global settings for secondary vif */ | |
1478 | ||
b238e90e | 1479 | if (ic_opmode == NL80211_IFTYPE_AP) { |
3069168c | 1480 | ath9k_hw_set_tsfadjust(ah, 1); |
b238e90e S |
1481 | sc->sc_flags |= SC_OP_TSF_RESET; |
1482 | } | |
5640b08e | 1483 | |
5640b08e | 1484 | /* Set the device opmode */ |
3069168c | 1485 | ah->opmode = ic_opmode; |
5640b08e | 1486 | |
4e30ffa2 VN |
1487 | /* |
1488 | * Enable MIB interrupts when there are hardware phy counters. | |
1489 | * Note we only do this (at the moment) for station mode. | |
1490 | */ | |
1ed32e4f JB |
1491 | if ((vif->type == NL80211_IFTYPE_STATION) || |
1492 | (vif->type == NL80211_IFTYPE_ADHOC) || | |
1493 | (vif->type == NL80211_IFTYPE_MESH_POINT)) { | |
3448f912 LR |
1494 | if (ah->config.enable_ani) |
1495 | ah->imask |= ATH9K_INT_MIB; | |
3069168c | 1496 | ah->imask |= ATH9K_INT_TSFOOR; |
4af9cf4f S |
1497 | } |
1498 | ||
3069168c | 1499 | ath9k_hw_set_interrupts(ah, ah->imask); |
4e30ffa2 | 1500 | |
1ed32e4f JB |
1501 | if (vif->type == NL80211_IFTYPE_AP || |
1502 | vif->type == NL80211_IFTYPE_ADHOC || | |
1503 | vif->type == NL80211_IFTYPE_MONITOR) | |
3d536acf | 1504 | ath_start_ani(common); |
6f255425 | 1505 | |
2c3db3d5 | 1506 | out: |
141b38b6 | 1507 | mutex_unlock(&sc->mutex); |
2c3db3d5 | 1508 | return ret; |
f078f209 LR |
1509 | } |
1510 | ||
8feceb67 | 1511 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
1ed32e4f | 1512 | struct ieee80211_vif *vif) |
f078f209 | 1513 | { |
bce048d7 JM |
1514 | struct ath_wiphy *aphy = hw->priv; |
1515 | struct ath_softc *sc = aphy->sc; | |
c46917bb | 1516 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
1ed32e4f | 1517 | struct ath_vif *avp = (void *)vif->drv_priv; |
2c3db3d5 | 1518 | int i; |
f078f209 | 1519 | |
c46917bb | 1520 | ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n"); |
f078f209 | 1521 | |
141b38b6 S |
1522 | mutex_lock(&sc->mutex); |
1523 | ||
6f255425 | 1524 | /* Stop ANI */ |
3d536acf | 1525 | del_timer_sync(&common->ani.timer); |
580f0b8a | 1526 | |
8feceb67 | 1527 | /* Reclaim beacon resources */ |
9cb5412b PE |
1528 | if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) || |
1529 | (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) || | |
1530 | (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) { | |
5f70a88f | 1531 | ath9k_ps_wakeup(sc); |
b77f483f | 1532 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
5f70a88f | 1533 | ath9k_ps_restore(sc); |
580f0b8a | 1534 | } |
f078f209 | 1535 | |
74401773 | 1536 | ath_beacon_return(sc, avp); |
8feceb67 | 1537 | sc->sc_flags &= ~SC_OP_BEACONS; |
f078f209 | 1538 | |
2c3db3d5 | 1539 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) { |
1ed32e4f | 1540 | if (sc->beacon.bslot[i] == vif) { |
2c3db3d5 JM |
1541 | printk(KERN_DEBUG "%s: vif had allocated beacon " |
1542 | "slot\n", __func__); | |
1543 | sc->beacon.bslot[i] = NULL; | |
c52f33d0 | 1544 | sc->beacon.bslot_aphy[i] = NULL; |
2c3db3d5 JM |
1545 | } |
1546 | } | |
1547 | ||
17d7904d | 1548 | sc->nvifs--; |
141b38b6 S |
1549 | |
1550 | mutex_unlock(&sc->mutex); | |
f078f209 LR |
1551 | } |
1552 | ||
3f7c5c10 SB |
1553 | void ath9k_enable_ps(struct ath_softc *sc) |
1554 | { | |
3069168c PR |
1555 | struct ath_hw *ah = sc->sc_ah; |
1556 | ||
3f7c5c10 | 1557 | sc->ps_enabled = true; |
3069168c PR |
1558 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { |
1559 | if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) { | |
1560 | ah->imask |= ATH9K_INT_TIM_TIMER; | |
1561 | ath9k_hw_set_interrupts(ah, ah->imask); | |
3f7c5c10 SB |
1562 | } |
1563 | } | |
3069168c | 1564 | ath9k_hw_setrxabort(ah, 1); |
3f7c5c10 SB |
1565 | } |
1566 | ||
e8975581 | 1567 | static int ath9k_config(struct ieee80211_hw *hw, u32 changed) |
f078f209 | 1568 | { |
bce048d7 JM |
1569 | struct ath_wiphy *aphy = hw->priv; |
1570 | struct ath_softc *sc = aphy->sc; | |
c46917bb | 1571 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
e8975581 | 1572 | struct ieee80211_conf *conf = &hw->conf; |
8782b41d | 1573 | struct ath_hw *ah = sc->sc_ah; |
194b7c13 | 1574 | bool disable_radio; |
f078f209 | 1575 | |
aa33de09 | 1576 | mutex_lock(&sc->mutex); |
141b38b6 | 1577 | |
194b7c13 LR |
1578 | /* |
1579 | * Leave this as the first check because we need to turn on the | |
1580 | * radio if it was disabled before prior to processing the rest | |
1581 | * of the changes. Likewise we must only disable the radio towards | |
1582 | * the end. | |
1583 | */ | |
64839170 | 1584 | if (changed & IEEE80211_CONF_CHANGE_IDLE) { |
194b7c13 LR |
1585 | bool enable_radio; |
1586 | bool all_wiphys_idle; | |
1587 | bool idle = !!(conf->flags & IEEE80211_CONF_IDLE); | |
64839170 LR |
1588 | |
1589 | spin_lock_bh(&sc->wiphy_lock); | |
1590 | all_wiphys_idle = ath9k_all_wiphys_idle(sc); | |
194b7c13 LR |
1591 | ath9k_set_wiphy_idle(aphy, idle); |
1592 | ||
11446011 | 1593 | enable_radio = (!idle && all_wiphys_idle); |
194b7c13 LR |
1594 | |
1595 | /* | |
1596 | * After we unlock here its possible another wiphy | |
1597 | * can be re-renabled so to account for that we will | |
1598 | * only disable the radio toward the end of this routine | |
1599 | * if by then all wiphys are still idle. | |
1600 | */ | |
64839170 LR |
1601 | spin_unlock_bh(&sc->wiphy_lock); |
1602 | ||
194b7c13 | 1603 | if (enable_radio) { |
1dbfd9d4 | 1604 | sc->ps_idle = false; |
68a89116 | 1605 | ath_radio_enable(sc, hw); |
c46917bb LR |
1606 | ath_print(common, ATH_DBG_CONFIG, |
1607 | "not-idle: enabling radio\n"); | |
64839170 LR |
1608 | } |
1609 | } | |
1610 | ||
e7824a50 LR |
1611 | /* |
1612 | * We just prepare to enable PS. We have to wait until our AP has | |
1613 | * ACK'd our null data frame to disable RX otherwise we'll ignore | |
1614 | * those ACKs and end up retransmitting the same null data frames. | |
1615 | * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode. | |
1616 | */ | |
3cbb5dd7 VN |
1617 | if (changed & IEEE80211_CONF_CHANGE_PS) { |
1618 | if (conf->flags & IEEE80211_CONF_PS) { | |
1b04b930 | 1619 | sc->ps_flags |= PS_ENABLED; |
e7824a50 LR |
1620 | /* |
1621 | * At this point we know hardware has received an ACK | |
1622 | * of a previously sent null data frame. | |
1623 | */ | |
1b04b930 S |
1624 | if ((sc->ps_flags & PS_NULLFUNC_COMPLETED)) { |
1625 | sc->ps_flags &= ~PS_NULLFUNC_COMPLETED; | |
3f7c5c10 | 1626 | ath9k_enable_ps(sc); |
e7824a50 | 1627 | } |
3cbb5dd7 | 1628 | } else { |
96148326 | 1629 | sc->ps_enabled = false; |
1b04b930 S |
1630 | sc->ps_flags &= ~(PS_ENABLED | |
1631 | PS_NULLFUNC_COMPLETED); | |
9ecdef4b | 1632 | ath9k_setpower(sc, ATH9K_PM_AWAKE); |
8782b41d VN |
1633 | if (!(ah->caps.hw_caps & |
1634 | ATH9K_HW_CAP_AUTOSLEEP)) { | |
1635 | ath9k_hw_setrxabort(sc->sc_ah, 0); | |
1b04b930 S |
1636 | sc->ps_flags &= ~(PS_WAIT_FOR_BEACON | |
1637 | PS_WAIT_FOR_CAB | | |
1638 | PS_WAIT_FOR_PSPOLL_DATA | | |
1639 | PS_WAIT_FOR_TX_ACK); | |
3069168c PR |
1640 | if (ah->imask & ATH9K_INT_TIM_TIMER) { |
1641 | ah->imask &= ~ATH9K_INT_TIM_TIMER; | |
8782b41d | 1642 | ath9k_hw_set_interrupts(sc->sc_ah, |
3069168c | 1643 | ah->imask); |
8782b41d | 1644 | } |
3cbb5dd7 VN |
1645 | } |
1646 | } | |
1647 | } | |
1648 | ||
199afd9d S |
1649 | if (changed & IEEE80211_CONF_CHANGE_MONITOR) { |
1650 | if (conf->flags & IEEE80211_CONF_MONITOR) { | |
1651 | ath_print(common, ATH_DBG_CONFIG, | |
1652 | "HW opmode set to Monitor mode\n"); | |
1653 | sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR; | |
1654 | } | |
1655 | } | |
1656 | ||
4797938c | 1657 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
99405f93 | 1658 | struct ieee80211_channel *curchan = hw->conf.channel; |
5f8e077c | 1659 | int pos = curchan->hw_value; |
ae5eb026 | 1660 | |
0e2dedf9 JM |
1661 | aphy->chan_idx = pos; |
1662 | aphy->chan_is_ht = conf_is_ht(conf); | |
1663 | ||
8089cc47 JM |
1664 | if (aphy->state == ATH_WIPHY_SCAN || |
1665 | aphy->state == ATH_WIPHY_ACTIVE) | |
1666 | ath9k_wiphy_pause_all_forced(sc, aphy); | |
1667 | else { | |
1668 | /* | |
1669 | * Do not change operational channel based on a paused | |
1670 | * wiphy changes. | |
1671 | */ | |
1672 | goto skip_chan_change; | |
1673 | } | |
0e2dedf9 | 1674 | |
c46917bb LR |
1675 | ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n", |
1676 | curchan->center_freq); | |
f078f209 | 1677 | |
5f8e077c | 1678 | /* XXX: remove me eventualy */ |
0e2dedf9 | 1679 | ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]); |
e11602b7 | 1680 | |
ecf70441 | 1681 | ath_update_chainmask(sc, conf_is_ht(conf)); |
86060f0d | 1682 | |
0e2dedf9 | 1683 | if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) { |
c46917bb LR |
1684 | ath_print(common, ATH_DBG_FATAL, |
1685 | "Unable to set channel\n"); | |
aa33de09 | 1686 | mutex_unlock(&sc->mutex); |
e11602b7 S |
1687 | return -EINVAL; |
1688 | } | |
094d05dc | 1689 | } |
f078f209 | 1690 | |
8089cc47 | 1691 | skip_chan_change: |
c9f6a656 | 1692 | if (changed & IEEE80211_CONF_CHANGE_POWER) { |
17d7904d | 1693 | sc->config.txpowlimit = 2 * conf->power_level; |
c9f6a656 LR |
1694 | ath_update_txpow(sc); |
1695 | } | |
f078f209 | 1696 | |
194b7c13 LR |
1697 | spin_lock_bh(&sc->wiphy_lock); |
1698 | disable_radio = ath9k_all_wiphys_idle(sc); | |
1699 | spin_unlock_bh(&sc->wiphy_lock); | |
1700 | ||
64839170 | 1701 | if (disable_radio) { |
c46917bb | 1702 | ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n"); |
1dbfd9d4 | 1703 | sc->ps_idle = true; |
68a89116 | 1704 | ath_radio_disable(sc, hw); |
64839170 LR |
1705 | } |
1706 | ||
aa33de09 | 1707 | mutex_unlock(&sc->mutex); |
141b38b6 | 1708 | |
f078f209 LR |
1709 | return 0; |
1710 | } | |
1711 | ||
8feceb67 VT |
1712 | #define SUPPORTED_FILTERS \ |
1713 | (FIF_PROMISC_IN_BSS | \ | |
1714 | FIF_ALLMULTI | \ | |
1715 | FIF_CONTROL | \ | |
af6a3fc7 | 1716 | FIF_PSPOLL | \ |
8feceb67 VT |
1717 | FIF_OTHER_BSS | \ |
1718 | FIF_BCN_PRBRESP_PROMISC | \ | |
1719 | FIF_FCSFAIL) | |
c83be688 | 1720 | |
8feceb67 VT |
1721 | /* FIXME: sc->sc_full_reset ? */ |
1722 | static void ath9k_configure_filter(struct ieee80211_hw *hw, | |
1723 | unsigned int changed_flags, | |
1724 | unsigned int *total_flags, | |
3ac64bee | 1725 | u64 multicast) |
8feceb67 | 1726 | { |
bce048d7 JM |
1727 | struct ath_wiphy *aphy = hw->priv; |
1728 | struct ath_softc *sc = aphy->sc; | |
8feceb67 | 1729 | u32 rfilt; |
f078f209 | 1730 | |
8feceb67 VT |
1731 | changed_flags &= SUPPORTED_FILTERS; |
1732 | *total_flags &= SUPPORTED_FILTERS; | |
f078f209 | 1733 | |
b77f483f | 1734 | sc->rx.rxfilter = *total_flags; |
aa68aeaa | 1735 | ath9k_ps_wakeup(sc); |
8feceb67 VT |
1736 | rfilt = ath_calcrxfilter(sc); |
1737 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); | |
aa68aeaa | 1738 | ath9k_ps_restore(sc); |
f078f209 | 1739 | |
c46917bb LR |
1740 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG, |
1741 | "Set HW RX filter: 0x%x\n", rfilt); | |
8feceb67 | 1742 | } |
f078f209 | 1743 | |
4ca77860 JB |
1744 | static int ath9k_sta_add(struct ieee80211_hw *hw, |
1745 | struct ieee80211_vif *vif, | |
1746 | struct ieee80211_sta *sta) | |
8feceb67 | 1747 | { |
bce048d7 JM |
1748 | struct ath_wiphy *aphy = hw->priv; |
1749 | struct ath_softc *sc = aphy->sc; | |
f078f209 | 1750 | |
4ca77860 JB |
1751 | ath_node_attach(sc, sta); |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | ||
1756 | static int ath9k_sta_remove(struct ieee80211_hw *hw, | |
1757 | struct ieee80211_vif *vif, | |
1758 | struct ieee80211_sta *sta) | |
1759 | { | |
1760 | struct ath_wiphy *aphy = hw->priv; | |
1761 | struct ath_softc *sc = aphy->sc; | |
1762 | ||
1763 | ath_node_detach(sc, sta); | |
1764 | ||
1765 | return 0; | |
f078f209 LR |
1766 | } |
1767 | ||
141b38b6 | 1768 | static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue, |
8feceb67 | 1769 | const struct ieee80211_tx_queue_params *params) |
f078f209 | 1770 | { |
bce048d7 JM |
1771 | struct ath_wiphy *aphy = hw->priv; |
1772 | struct ath_softc *sc = aphy->sc; | |
c46917bb | 1773 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
8feceb67 VT |
1774 | struct ath9k_tx_queue_info qi; |
1775 | int ret = 0, qnum; | |
f078f209 | 1776 | |
8feceb67 VT |
1777 | if (queue >= WME_NUM_AC) |
1778 | return 0; | |
f078f209 | 1779 | |
141b38b6 S |
1780 | mutex_lock(&sc->mutex); |
1781 | ||
1ffb0610 S |
1782 | memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); |
1783 | ||
8feceb67 VT |
1784 | qi.tqi_aifs = params->aifs; |
1785 | qi.tqi_cwmin = params->cw_min; | |
1786 | qi.tqi_cwmax = params->cw_max; | |
1787 | qi.tqi_burstTime = params->txop; | |
1788 | qnum = ath_get_hal_qnum(queue, sc); | |
f078f209 | 1789 | |
c46917bb LR |
1790 | ath_print(common, ATH_DBG_CONFIG, |
1791 | "Configure tx [queue/halq] [%d/%d], " | |
1792 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", | |
1793 | queue, qnum, params->aifs, params->cw_min, | |
1794 | params->cw_max, params->txop); | |
f078f209 | 1795 | |
8feceb67 VT |
1796 | ret = ath_txq_update(sc, qnum, &qi); |
1797 | if (ret) | |
c46917bb | 1798 | ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n"); |
f078f209 | 1799 | |
94db2936 VN |
1800 | if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) |
1801 | if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret) | |
1802 | ath_beaconq_config(sc); | |
1803 | ||
141b38b6 S |
1804 | mutex_unlock(&sc->mutex); |
1805 | ||
8feceb67 VT |
1806 | return ret; |
1807 | } | |
f078f209 | 1808 | |
8feceb67 VT |
1809 | static int ath9k_set_key(struct ieee80211_hw *hw, |
1810 | enum set_key_cmd cmd, | |
dc822b5d JB |
1811 | struct ieee80211_vif *vif, |
1812 | struct ieee80211_sta *sta, | |
8feceb67 VT |
1813 | struct ieee80211_key_conf *key) |
1814 | { | |
bce048d7 JM |
1815 | struct ath_wiphy *aphy = hw->priv; |
1816 | struct ath_softc *sc = aphy->sc; | |
c46917bb | 1817 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
8feceb67 | 1818 | int ret = 0; |
f078f209 | 1819 | |
b3bd89ce JM |
1820 | if (modparam_nohwcrypt) |
1821 | return -ENOSPC; | |
1822 | ||
141b38b6 | 1823 | mutex_lock(&sc->mutex); |
3cbb5dd7 | 1824 | ath9k_ps_wakeup(sc); |
c46917bb | 1825 | ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n"); |
f078f209 | 1826 | |
8feceb67 VT |
1827 | switch (cmd) { |
1828 | case SET_KEY: | |
7e86c104 | 1829 | ret = ath_key_config(common, vif, sta, key); |
6ace2891 JM |
1830 | if (ret >= 0) { |
1831 | key->hw_key_idx = ret; | |
8feceb67 VT |
1832 | /* push IV and Michael MIC generation to stack */ |
1833 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1834 | if (key->alg == ALG_TKIP) | |
1835 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
0ced0e17 JM |
1836 | if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP) |
1837 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; | |
6ace2891 | 1838 | ret = 0; |
8feceb67 VT |
1839 | } |
1840 | break; | |
1841 | case DISABLE_KEY: | |
7e86c104 | 1842 | ath_key_delete(common, key); |
8feceb67 VT |
1843 | break; |
1844 | default: | |
1845 | ret = -EINVAL; | |
1846 | } | |
f078f209 | 1847 | |
3cbb5dd7 | 1848 | ath9k_ps_restore(sc); |
141b38b6 S |
1849 | mutex_unlock(&sc->mutex); |
1850 | ||
8feceb67 VT |
1851 | return ret; |
1852 | } | |
f078f209 | 1853 | |
8feceb67 VT |
1854 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
1855 | struct ieee80211_vif *vif, | |
1856 | struct ieee80211_bss_conf *bss_conf, | |
1857 | u32 changed) | |
1858 | { | |
bce048d7 JM |
1859 | struct ath_wiphy *aphy = hw->priv; |
1860 | struct ath_softc *sc = aphy->sc; | |
2d0ddec5 | 1861 | struct ath_hw *ah = sc->sc_ah; |
1510718d | 1862 | struct ath_common *common = ath9k_hw_common(ah); |
2d0ddec5 | 1863 | struct ath_vif *avp = (void *)vif->drv_priv; |
0005baf4 | 1864 | int slottime; |
c6089ccc | 1865 | int error; |
f078f209 | 1866 | |
141b38b6 S |
1867 | mutex_lock(&sc->mutex); |
1868 | ||
c6089ccc S |
1869 | if (changed & BSS_CHANGED_BSSID) { |
1870 | /* Set BSSID */ | |
1871 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); | |
1872 | memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN); | |
1510718d | 1873 | common->curaid = 0; |
f2b2143e | 1874 | ath9k_hw_write_associd(ah); |
2d0ddec5 | 1875 | |
c6089ccc S |
1876 | /* Set aggregation protection mode parameters */ |
1877 | sc->config.ath_aggr_prot = 0; | |
2d0ddec5 | 1878 | |
c6089ccc S |
1879 | /* Only legacy IBSS for now */ |
1880 | if (vif->type == NL80211_IFTYPE_ADHOC) | |
1881 | ath_update_chainmask(sc, 0); | |
2d0ddec5 | 1882 | |
c6089ccc S |
1883 | ath_print(common, ATH_DBG_CONFIG, |
1884 | "BSSID: %pM aid: 0x%x\n", | |
1885 | common->curbssid, common->curaid); | |
2d0ddec5 | 1886 | |
c6089ccc S |
1887 | /* need to reconfigure the beacon */ |
1888 | sc->sc_flags &= ~SC_OP_BEACONS ; | |
1889 | } | |
2d0ddec5 | 1890 | |
c6089ccc S |
1891 | /* Enable transmission of beacons (AP, IBSS, MESH) */ |
1892 | if ((changed & BSS_CHANGED_BEACON) || | |
1893 | ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) { | |
1894 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); | |
1895 | error = ath_beacon_alloc(aphy, vif); | |
1896 | if (!error) | |
1897 | ath_beacon_config(sc, vif); | |
0005baf4 FF |
1898 | } |
1899 | ||
1900 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
1901 | if (bss_conf->use_short_slot) | |
1902 | slottime = 9; | |
1903 | else | |
1904 | slottime = 20; | |
1905 | if (vif->type == NL80211_IFTYPE_AP) { | |
1906 | /* | |
1907 | * Defer update, so that connected stations can adjust | |
1908 | * their settings at the same time. | |
1909 | * See beacon.c for more details | |
1910 | */ | |
1911 | sc->beacon.slottime = slottime; | |
1912 | sc->beacon.updateslot = UPDATE; | |
1913 | } else { | |
1914 | ah->slottime = slottime; | |
1915 | ath9k_hw_init_global_settings(ah); | |
1916 | } | |
2d0ddec5 JB |
1917 | } |
1918 | ||
c6089ccc S |
1919 | /* Disable transmission of beacons */ |
1920 | if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) | |
1921 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); | |
2d0ddec5 | 1922 | |
c6089ccc S |
1923 | if (changed & BSS_CHANGED_BEACON_INT) { |
1924 | sc->beacon_interval = bss_conf->beacon_int; | |
1925 | /* | |
1926 | * In case of AP mode, the HW TSF has to be reset | |
1927 | * when the beacon interval changes. | |
1928 | */ | |
1929 | if (vif->type == NL80211_IFTYPE_AP) { | |
1930 | sc->sc_flags |= SC_OP_TSF_RESET; | |
1931 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); | |
2d0ddec5 JB |
1932 | error = ath_beacon_alloc(aphy, vif); |
1933 | if (!error) | |
1934 | ath_beacon_config(sc, vif); | |
c6089ccc S |
1935 | } else { |
1936 | ath_beacon_config(sc, vif); | |
2d0ddec5 JB |
1937 | } |
1938 | } | |
1939 | ||
8feceb67 | 1940 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
c46917bb LR |
1941 | ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n", |
1942 | bss_conf->use_short_preamble); | |
8feceb67 VT |
1943 | if (bss_conf->use_short_preamble) |
1944 | sc->sc_flags |= SC_OP_PREAMBLE_SHORT; | |
1945 | else | |
1946 | sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; | |
1947 | } | |
f078f209 | 1948 | |
8feceb67 | 1949 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
c46917bb LR |
1950 | ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n", |
1951 | bss_conf->use_cts_prot); | |
8feceb67 VT |
1952 | if (bss_conf->use_cts_prot && |
1953 | hw->conf.channel->band != IEEE80211_BAND_5GHZ) | |
1954 | sc->sc_flags |= SC_OP_PROTECT_ENABLE; | |
1955 | else | |
1956 | sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; | |
1957 | } | |
f078f209 | 1958 | |
8feceb67 | 1959 | if (changed & BSS_CHANGED_ASSOC) { |
c46917bb | 1960 | ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n", |
8feceb67 | 1961 | bss_conf->assoc); |
5640b08e | 1962 | ath9k_bss_assoc_info(sc, vif, bss_conf); |
8feceb67 | 1963 | } |
141b38b6 S |
1964 | |
1965 | mutex_unlock(&sc->mutex); | |
8feceb67 | 1966 | } |
f078f209 | 1967 | |
8feceb67 VT |
1968 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
1969 | { | |
1970 | u64 tsf; | |
bce048d7 JM |
1971 | struct ath_wiphy *aphy = hw->priv; |
1972 | struct ath_softc *sc = aphy->sc; | |
f078f209 | 1973 | |
141b38b6 S |
1974 | mutex_lock(&sc->mutex); |
1975 | tsf = ath9k_hw_gettsf64(sc->sc_ah); | |
1976 | mutex_unlock(&sc->mutex); | |
f078f209 | 1977 | |
8feceb67 VT |
1978 | return tsf; |
1979 | } | |
f078f209 | 1980 | |
3b5d665b AF |
1981 | static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf) |
1982 | { | |
bce048d7 JM |
1983 | struct ath_wiphy *aphy = hw->priv; |
1984 | struct ath_softc *sc = aphy->sc; | |
3b5d665b | 1985 | |
141b38b6 S |
1986 | mutex_lock(&sc->mutex); |
1987 | ath9k_hw_settsf64(sc->sc_ah, tsf); | |
1988 | mutex_unlock(&sc->mutex); | |
3b5d665b AF |
1989 | } |
1990 | ||
8feceb67 VT |
1991 | static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
1992 | { | |
bce048d7 JM |
1993 | struct ath_wiphy *aphy = hw->priv; |
1994 | struct ath_softc *sc = aphy->sc; | |
c83be688 | 1995 | |
141b38b6 | 1996 | mutex_lock(&sc->mutex); |
21526d57 LR |
1997 | |
1998 | ath9k_ps_wakeup(sc); | |
141b38b6 | 1999 | ath9k_hw_reset_tsf(sc->sc_ah); |
21526d57 LR |
2000 | ath9k_ps_restore(sc); |
2001 | ||
141b38b6 | 2002 | mutex_unlock(&sc->mutex); |
8feceb67 | 2003 | } |
f078f209 | 2004 | |
8feceb67 | 2005 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
c951ad35 | 2006 | struct ieee80211_vif *vif, |
141b38b6 S |
2007 | enum ieee80211_ampdu_mlme_action action, |
2008 | struct ieee80211_sta *sta, | |
2009 | u16 tid, u16 *ssn) | |
8feceb67 | 2010 | { |
bce048d7 JM |
2011 | struct ath_wiphy *aphy = hw->priv; |
2012 | struct ath_softc *sc = aphy->sc; | |
8feceb67 | 2013 | int ret = 0; |
f078f209 | 2014 | |
8feceb67 VT |
2015 | switch (action) { |
2016 | case IEEE80211_AMPDU_RX_START: | |
dca3edb8 S |
2017 | if (!(sc->sc_flags & SC_OP_RXAGGR)) |
2018 | ret = -ENOTSUPP; | |
8feceb67 VT |
2019 | break; |
2020 | case IEEE80211_AMPDU_RX_STOP: | |
8feceb67 VT |
2021 | break; |
2022 | case IEEE80211_AMPDU_TX_START: | |
8b685ba9 | 2023 | ath9k_ps_wakeup(sc); |
f83da965 | 2024 | ath_tx_aggr_start(sc, sta, tid, ssn); |
c951ad35 | 2025 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
8b685ba9 | 2026 | ath9k_ps_restore(sc); |
8feceb67 VT |
2027 | break; |
2028 | case IEEE80211_AMPDU_TX_STOP: | |
8b685ba9 | 2029 | ath9k_ps_wakeup(sc); |
f83da965 | 2030 | ath_tx_aggr_stop(sc, sta, tid); |
c951ad35 | 2031 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
8b685ba9 | 2032 | ath9k_ps_restore(sc); |
8feceb67 | 2033 | break; |
b1720231 | 2034 | case IEEE80211_AMPDU_TX_OPERATIONAL: |
8b685ba9 | 2035 | ath9k_ps_wakeup(sc); |
8469cdef | 2036 | ath_tx_aggr_resume(sc, sta, tid); |
8b685ba9 | 2037 | ath9k_ps_restore(sc); |
8469cdef | 2038 | break; |
8feceb67 | 2039 | default: |
c46917bb LR |
2040 | ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, |
2041 | "Unknown AMPDU action\n"); | |
8feceb67 VT |
2042 | } |
2043 | ||
2044 | return ret; | |
f078f209 LR |
2045 | } |
2046 | ||
62dad5b0 BP |
2047 | static int ath9k_get_survey(struct ieee80211_hw *hw, int idx, |
2048 | struct survey_info *survey) | |
2049 | { | |
2050 | struct ath_wiphy *aphy = hw->priv; | |
2051 | struct ath_softc *sc = aphy->sc; | |
2052 | struct ath_hw *ah = sc->sc_ah; | |
2053 | struct ath_common *common = ath9k_hw_common(ah); | |
2054 | struct ieee80211_conf *conf = &hw->conf; | |
2055 | ||
2056 | if (idx != 0) | |
2057 | return -ENOENT; | |
2058 | ||
2059 | survey->channel = conf->channel; | |
2060 | survey->filled = SURVEY_INFO_NOISE_DBM; | |
2061 | survey->noise = common->ani.noise_floor; | |
2062 | ||
2063 | return 0; | |
2064 | } | |
2065 | ||
0c98de65 S |
2066 | static void ath9k_sw_scan_start(struct ieee80211_hw *hw) |
2067 | { | |
bce048d7 JM |
2068 | struct ath_wiphy *aphy = hw->priv; |
2069 | struct ath_softc *sc = aphy->sc; | |
05c78d6d | 2070 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
0c98de65 | 2071 | |
3d832611 | 2072 | mutex_lock(&sc->mutex); |
8089cc47 JM |
2073 | if (ath9k_wiphy_scanning(sc)) { |
2074 | printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the " | |
2075 | "same time\n"); | |
2076 | /* | |
2077 | * Do not allow the concurrent scanning state for now. This | |
2078 | * could be improved with scanning control moved into ath9k. | |
2079 | */ | |
3d832611 | 2080 | mutex_unlock(&sc->mutex); |
8089cc47 JM |
2081 | return; |
2082 | } | |
2083 | ||
2084 | aphy->state = ATH_WIPHY_SCAN; | |
2085 | ath9k_wiphy_pause_all_forced(sc, aphy); | |
0c98de65 | 2086 | sc->sc_flags |= SC_OP_SCANNING; |
05c78d6d | 2087 | del_timer_sync(&common->ani.timer); |
b6ce5c33 | 2088 | cancel_delayed_work_sync(&sc->tx_complete_work); |
3d832611 | 2089 | mutex_unlock(&sc->mutex); |
0c98de65 S |
2090 | } |
2091 | ||
2092 | static void ath9k_sw_scan_complete(struct ieee80211_hw *hw) | |
2093 | { | |
bce048d7 JM |
2094 | struct ath_wiphy *aphy = hw->priv; |
2095 | struct ath_softc *sc = aphy->sc; | |
05c78d6d | 2096 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
0c98de65 | 2097 | |
3d832611 | 2098 | mutex_lock(&sc->mutex); |
8089cc47 | 2099 | aphy->state = ATH_WIPHY_ACTIVE; |
0c98de65 | 2100 | sc->sc_flags &= ~SC_OP_SCANNING; |
9c07a777 | 2101 | sc->sc_flags |= SC_OP_FULL_RESET; |
05c78d6d | 2102 | ath_start_ani(common); |
b6ce5c33 | 2103 | ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
d0bec342 | 2104 | ath_beacon_config(sc, NULL); |
3d832611 | 2105 | mutex_unlock(&sc->mutex); |
0c98de65 S |
2106 | } |
2107 | ||
e239d859 FF |
2108 | static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) |
2109 | { | |
2110 | struct ath_wiphy *aphy = hw->priv; | |
2111 | struct ath_softc *sc = aphy->sc; | |
2112 | struct ath_hw *ah = sc->sc_ah; | |
2113 | ||
2114 | mutex_lock(&sc->mutex); | |
2115 | ah->coverage_class = coverage_class; | |
2116 | ath9k_hw_init_global_settings(ah); | |
2117 | mutex_unlock(&sc->mutex); | |
2118 | } | |
2119 | ||
6baff7f9 | 2120 | struct ieee80211_ops ath9k_ops = { |
8feceb67 VT |
2121 | .tx = ath9k_tx, |
2122 | .start = ath9k_start, | |
2123 | .stop = ath9k_stop, | |
2124 | .add_interface = ath9k_add_interface, | |
2125 | .remove_interface = ath9k_remove_interface, | |
2126 | .config = ath9k_config, | |
8feceb67 | 2127 | .configure_filter = ath9k_configure_filter, |
4ca77860 JB |
2128 | .sta_add = ath9k_sta_add, |
2129 | .sta_remove = ath9k_sta_remove, | |
8feceb67 | 2130 | .conf_tx = ath9k_conf_tx, |
8feceb67 | 2131 | .bss_info_changed = ath9k_bss_info_changed, |
8feceb67 | 2132 | .set_key = ath9k_set_key, |
8feceb67 | 2133 | .get_tsf = ath9k_get_tsf, |
3b5d665b | 2134 | .set_tsf = ath9k_set_tsf, |
8feceb67 | 2135 | .reset_tsf = ath9k_reset_tsf, |
4233df6b | 2136 | .ampdu_action = ath9k_ampdu_action, |
62dad5b0 | 2137 | .get_survey = ath9k_get_survey, |
0c98de65 S |
2138 | .sw_scan_start = ath9k_sw_scan_start, |
2139 | .sw_scan_complete = ath9k_sw_scan_complete, | |
3b319aae | 2140 | .rfkill_poll = ath9k_rfkill_poll_state, |
e239d859 | 2141 | .set_coverage_class = ath9k_set_coverage_class, |
8feceb67 | 2142 | }; |