Commit | Line | Data |
---|---|---|
f078f209 LR |
1 | /* |
2 | * Copyright (c) 2008 Atheros Communications Inc. | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
f078f209 | 17 | #include <linux/nl80211.h> |
394cf0a1 | 18 | #include "ath9k.h" |
f078f209 LR |
19 | |
20 | #define ATH_PCI_VERSION "0.1" | |
21 | ||
f078f209 LR |
22 | static char *dev_info = "ath9k"; |
23 | ||
24 | MODULE_AUTHOR("Atheros Communications"); | |
25 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); | |
26 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); | |
27 | MODULE_LICENSE("Dual BSD/GPL"); | |
28 | ||
5f8e077c LR |
29 | /* We use the hw_value as an index into our private channel structure */ |
30 | ||
31 | #define CHAN2G(_freq, _idx) { \ | |
32 | .center_freq = (_freq), \ | |
33 | .hw_value = (_idx), \ | |
34 | .max_power = 30, \ | |
35 | } | |
36 | ||
37 | #define CHAN5G(_freq, _idx) { \ | |
38 | .band = IEEE80211_BAND_5GHZ, \ | |
39 | .center_freq = (_freq), \ | |
40 | .hw_value = (_idx), \ | |
41 | .max_power = 30, \ | |
42 | } | |
43 | ||
44 | /* Some 2 GHz radios are actually tunable on 2312-2732 | |
45 | * on 5 MHz steps, we support the channels which we know | |
46 | * we have calibration data for all cards though to make | |
47 | * this static */ | |
48 | static struct ieee80211_channel ath9k_2ghz_chantable[] = { | |
49 | CHAN2G(2412, 0), /* Channel 1 */ | |
50 | CHAN2G(2417, 1), /* Channel 2 */ | |
51 | CHAN2G(2422, 2), /* Channel 3 */ | |
52 | CHAN2G(2427, 3), /* Channel 4 */ | |
53 | CHAN2G(2432, 4), /* Channel 5 */ | |
54 | CHAN2G(2437, 5), /* Channel 6 */ | |
55 | CHAN2G(2442, 6), /* Channel 7 */ | |
56 | CHAN2G(2447, 7), /* Channel 8 */ | |
57 | CHAN2G(2452, 8), /* Channel 9 */ | |
58 | CHAN2G(2457, 9), /* Channel 10 */ | |
59 | CHAN2G(2462, 10), /* Channel 11 */ | |
60 | CHAN2G(2467, 11), /* Channel 12 */ | |
61 | CHAN2G(2472, 12), /* Channel 13 */ | |
62 | CHAN2G(2484, 13), /* Channel 14 */ | |
63 | }; | |
64 | ||
65 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY | |
66 | * on 5 MHz steps, we support the channels which we know | |
67 | * we have calibration data for all cards though to make | |
68 | * this static */ | |
69 | static struct ieee80211_channel ath9k_5ghz_chantable[] = { | |
70 | /* _We_ call this UNII 1 */ | |
71 | CHAN5G(5180, 14), /* Channel 36 */ | |
72 | CHAN5G(5200, 15), /* Channel 40 */ | |
73 | CHAN5G(5220, 16), /* Channel 44 */ | |
74 | CHAN5G(5240, 17), /* Channel 48 */ | |
75 | /* _We_ call this UNII 2 */ | |
76 | CHAN5G(5260, 18), /* Channel 52 */ | |
77 | CHAN5G(5280, 19), /* Channel 56 */ | |
78 | CHAN5G(5300, 20), /* Channel 60 */ | |
79 | CHAN5G(5320, 21), /* Channel 64 */ | |
80 | /* _We_ call this "Middle band" */ | |
81 | CHAN5G(5500, 22), /* Channel 100 */ | |
82 | CHAN5G(5520, 23), /* Channel 104 */ | |
83 | CHAN5G(5540, 24), /* Channel 108 */ | |
84 | CHAN5G(5560, 25), /* Channel 112 */ | |
85 | CHAN5G(5580, 26), /* Channel 116 */ | |
86 | CHAN5G(5600, 27), /* Channel 120 */ | |
87 | CHAN5G(5620, 28), /* Channel 124 */ | |
88 | CHAN5G(5640, 29), /* Channel 128 */ | |
89 | CHAN5G(5660, 30), /* Channel 132 */ | |
90 | CHAN5G(5680, 31), /* Channel 136 */ | |
91 | CHAN5G(5700, 32), /* Channel 140 */ | |
92 | /* _We_ call this UNII 3 */ | |
93 | CHAN5G(5745, 33), /* Channel 149 */ | |
94 | CHAN5G(5765, 34), /* Channel 153 */ | |
95 | CHAN5G(5785, 35), /* Channel 157 */ | |
96 | CHAN5G(5805, 36), /* Channel 161 */ | |
97 | CHAN5G(5825, 37), /* Channel 165 */ | |
98 | }; | |
99 | ||
ce111bad LR |
100 | static void ath_cache_conf_rate(struct ath_softc *sc, |
101 | struct ieee80211_conf *conf) | |
ff37e337 | 102 | { |
030bb495 LR |
103 | switch (conf->channel->band) { |
104 | case IEEE80211_BAND_2GHZ: | |
105 | if (conf_is_ht20(conf)) | |
106 | sc->cur_rate_table = | |
107 | sc->hw_rate_table[ATH9K_MODE_11NG_HT20]; | |
108 | else if (conf_is_ht40_minus(conf)) | |
109 | sc->cur_rate_table = | |
110 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS]; | |
111 | else if (conf_is_ht40_plus(conf)) | |
112 | sc->cur_rate_table = | |
113 | sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS]; | |
96742256 | 114 | else |
030bb495 LR |
115 | sc->cur_rate_table = |
116 | sc->hw_rate_table[ATH9K_MODE_11G]; | |
030bb495 LR |
117 | break; |
118 | case IEEE80211_BAND_5GHZ: | |
119 | if (conf_is_ht20(conf)) | |
120 | sc->cur_rate_table = | |
121 | sc->hw_rate_table[ATH9K_MODE_11NA_HT20]; | |
122 | else if (conf_is_ht40_minus(conf)) | |
123 | sc->cur_rate_table = | |
124 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS]; | |
125 | else if (conf_is_ht40_plus(conf)) | |
126 | sc->cur_rate_table = | |
127 | sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS]; | |
128 | else | |
96742256 LR |
129 | sc->cur_rate_table = |
130 | sc->hw_rate_table[ATH9K_MODE_11A]; | |
030bb495 LR |
131 | break; |
132 | default: | |
ce111bad | 133 | BUG_ON(1); |
030bb495 LR |
134 | break; |
135 | } | |
ff37e337 S |
136 | } |
137 | ||
138 | static void ath_update_txpow(struct ath_softc *sc) | |
139 | { | |
cbe61d8a | 140 | struct ath_hw *ah = sc->sc_ah; |
ff37e337 S |
141 | u32 txpow; |
142 | ||
17d7904d S |
143 | if (sc->curtxpow != sc->config.txpowlimit) { |
144 | ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit); | |
ff37e337 S |
145 | /* read back in case value is clamped */ |
146 | ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow); | |
17d7904d | 147 | sc->curtxpow = txpow; |
ff37e337 S |
148 | } |
149 | } | |
150 | ||
151 | static u8 parse_mpdudensity(u8 mpdudensity) | |
152 | { | |
153 | /* | |
154 | * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": | |
155 | * 0 for no restriction | |
156 | * 1 for 1/4 us | |
157 | * 2 for 1/2 us | |
158 | * 3 for 1 us | |
159 | * 4 for 2 us | |
160 | * 5 for 4 us | |
161 | * 6 for 8 us | |
162 | * 7 for 16 us | |
163 | */ | |
164 | switch (mpdudensity) { | |
165 | case 0: | |
166 | return 0; | |
167 | case 1: | |
168 | case 2: | |
169 | case 3: | |
170 | /* Our lower layer calculations limit our precision to | |
171 | 1 microsecond */ | |
172 | return 1; | |
173 | case 4: | |
174 | return 2; | |
175 | case 5: | |
176 | return 4; | |
177 | case 6: | |
178 | return 8; | |
179 | case 7: | |
180 | return 16; | |
181 | default: | |
182 | return 0; | |
183 | } | |
184 | } | |
185 | ||
186 | static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band) | |
187 | { | |
188 | struct ath_rate_table *rate_table = NULL; | |
189 | struct ieee80211_supported_band *sband; | |
190 | struct ieee80211_rate *rate; | |
191 | int i, maxrates; | |
192 | ||
193 | switch (band) { | |
194 | case IEEE80211_BAND_2GHZ: | |
195 | rate_table = sc->hw_rate_table[ATH9K_MODE_11G]; | |
196 | break; | |
197 | case IEEE80211_BAND_5GHZ: | |
198 | rate_table = sc->hw_rate_table[ATH9K_MODE_11A]; | |
199 | break; | |
200 | default: | |
201 | break; | |
202 | } | |
203 | ||
204 | if (rate_table == NULL) | |
205 | return; | |
206 | ||
207 | sband = &sc->sbands[band]; | |
208 | rate = sc->rates[band]; | |
209 | ||
210 | if (rate_table->rate_cnt > ATH_RATE_MAX) | |
211 | maxrates = ATH_RATE_MAX; | |
212 | else | |
213 | maxrates = rate_table->rate_cnt; | |
214 | ||
215 | for (i = 0; i < maxrates; i++) { | |
216 | rate[i].bitrate = rate_table->info[i].ratekbps / 100; | |
217 | rate[i].hw_value = rate_table->info[i].ratecode; | |
f46730d1 S |
218 | if (rate_table->info[i].short_preamble) { |
219 | rate[i].hw_value_short = rate_table->info[i].ratecode | | |
220 | rate_table->info[i].short_preamble; | |
221 | rate[i].flags = IEEE80211_RATE_SHORT_PREAMBLE; | |
222 | } | |
ff37e337 | 223 | sband->n_bitrates++; |
f46730d1 | 224 | |
04bd4638 S |
225 | DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n", |
226 | rate[i].bitrate / 10, rate[i].hw_value); | |
ff37e337 S |
227 | } |
228 | } | |
229 | ||
ff37e337 S |
230 | /* |
231 | * Set/change channels. If the channel is really being changed, it's done | |
232 | * by reseting the chip. To accomplish this we must first cleanup any pending | |
233 | * DMA, then restart stuff. | |
234 | */ | |
235 | static int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) | |
236 | { | |
cbe61d8a | 237 | struct ath_hw *ah = sc->sc_ah; |
ff37e337 | 238 | bool fastcc = true, stopped; |
030bb495 | 239 | struct ieee80211_hw *hw = sc->hw; |
ae8d2858 LR |
240 | struct ieee80211_channel *channel = hw->conf.channel; |
241 | int r; | |
ff37e337 S |
242 | |
243 | if (sc->sc_flags & SC_OP_INVALID) | |
244 | return -EIO; | |
245 | ||
3cbb5dd7 VN |
246 | ath9k_ps_wakeup(sc); |
247 | ||
c0d7c7af LR |
248 | /* |
249 | * This is only performed if the channel settings have | |
250 | * actually changed. | |
251 | * | |
252 | * To switch channels clear any pending DMA operations; | |
253 | * wait long enough for the RX fifo to drain, reset the | |
254 | * hardware at the new frequency, and then re-enable | |
255 | * the relevant bits of the h/w. | |
256 | */ | |
257 | ath9k_hw_set_interrupts(ah, 0); | |
043a0405 | 258 | ath_drain_all_txq(sc, false); |
c0d7c7af | 259 | stopped = ath_stoprecv(sc); |
ff37e337 | 260 | |
c0d7c7af LR |
261 | /* XXX: do not flush receive queue here. We don't want |
262 | * to flush data frames already in queue because of | |
263 | * changing channel. */ | |
ff37e337 | 264 | |
c0d7c7af LR |
265 | if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) |
266 | fastcc = false; | |
267 | ||
268 | DPRINTF(sc, ATH_DBG_CONFIG, | |
269 | "(%u MHz) -> (%u MHz), chanwidth: %d\n", | |
2660b81a | 270 | sc->sc_ah->curchan->channel, |
c0d7c7af | 271 | channel->center_freq, sc->tx_chan_width); |
ff37e337 | 272 | |
c0d7c7af LR |
273 | spin_lock_bh(&sc->sc_resetlock); |
274 | ||
275 | r = ath9k_hw_reset(ah, hchan, fastcc); | |
276 | if (r) { | |
277 | DPRINTF(sc, ATH_DBG_FATAL, | |
278 | "Unable to reset channel (%u Mhz) " | |
279 | "reset status %u\n", | |
280 | channel->center_freq, r); | |
281 | spin_unlock_bh(&sc->sc_resetlock); | |
282 | return r; | |
ff37e337 | 283 | } |
c0d7c7af LR |
284 | spin_unlock_bh(&sc->sc_resetlock); |
285 | ||
286 | sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE; | |
287 | sc->sc_flags &= ~SC_OP_FULL_RESET; | |
288 | ||
289 | if (ath_startrecv(sc) != 0) { | |
290 | DPRINTF(sc, ATH_DBG_FATAL, | |
291 | "Unable to restart recv logic\n"); | |
292 | return -EIO; | |
293 | } | |
294 | ||
295 | ath_cache_conf_rate(sc, &hw->conf); | |
296 | ath_update_txpow(sc); | |
17d7904d | 297 | ath9k_hw_set_interrupts(ah, sc->imask); |
3cbb5dd7 | 298 | ath9k_ps_restore(sc); |
ff37e337 S |
299 | return 0; |
300 | } | |
301 | ||
302 | /* | |
303 | * This routine performs the periodic noise floor calibration function | |
304 | * that is used to adjust and optimize the chip performance. This | |
305 | * takes environmental changes (location, temperature) into account. | |
306 | * When the task is complete, it reschedules itself depending on the | |
307 | * appropriate interval that was calculated. | |
308 | */ | |
309 | static void ath_ani_calibrate(unsigned long data) | |
310 | { | |
311 | struct ath_softc *sc; | |
cbe61d8a | 312 | struct ath_hw *ah; |
ff37e337 S |
313 | bool longcal = false; |
314 | bool shortcal = false; | |
315 | bool aniflag = false; | |
316 | unsigned int timestamp = jiffies_to_msecs(jiffies); | |
317 | u32 cal_interval; | |
318 | ||
319 | sc = (struct ath_softc *)data; | |
320 | ah = sc->sc_ah; | |
321 | ||
322 | /* | |
323 | * don't calibrate when we're scanning. | |
324 | * we are most likely not on our home channel. | |
325 | */ | |
b77f483f | 326 | if (sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC) |
ff37e337 S |
327 | return; |
328 | ||
329 | /* Long calibration runs independently of short calibration. */ | |
17d7904d | 330 | if ((timestamp - sc->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) { |
ff37e337 | 331 | longcal = true; |
04bd4638 | 332 | DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies); |
17d7904d | 333 | sc->ani.longcal_timer = timestamp; |
ff37e337 S |
334 | } |
335 | ||
17d7904d S |
336 | /* Short calibration applies only while caldone is false */ |
337 | if (!sc->ani.caldone) { | |
338 | if ((timestamp - sc->ani.shortcal_timer) >= | |
ff37e337 S |
339 | ATH_SHORT_CALINTERVAL) { |
340 | shortcal = true; | |
04bd4638 | 341 | DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies); |
17d7904d S |
342 | sc->ani.shortcal_timer = timestamp; |
343 | sc->ani.resetcal_timer = timestamp; | |
ff37e337 S |
344 | } |
345 | } else { | |
17d7904d | 346 | if ((timestamp - sc->ani.resetcal_timer) >= |
ff37e337 | 347 | ATH_RESTART_CALINTERVAL) { |
17d7904d S |
348 | sc->ani.caldone = ath9k_hw_reset_calvalid(ah); |
349 | if (sc->ani.caldone) | |
350 | sc->ani.resetcal_timer = timestamp; | |
ff37e337 S |
351 | } |
352 | } | |
353 | ||
354 | /* Verify whether we must check ANI */ | |
17d7904d | 355 | if ((timestamp - sc->ani.checkani_timer) >= |
ff37e337 S |
356 | ATH_ANI_POLLINTERVAL) { |
357 | aniflag = true; | |
17d7904d | 358 | sc->ani.checkani_timer = timestamp; |
ff37e337 S |
359 | } |
360 | ||
361 | /* Skip all processing if there's nothing to do. */ | |
362 | if (longcal || shortcal || aniflag) { | |
363 | /* Call ANI routine if necessary */ | |
364 | if (aniflag) | |
17d7904d | 365 | ath9k_hw_ani_monitor(ah, &sc->nodestats, |
2660b81a | 366 | ah->curchan); |
ff37e337 S |
367 | |
368 | /* Perform calibration if necessary */ | |
369 | if (longcal || shortcal) { | |
370 | bool iscaldone = false; | |
371 | ||
2660b81a | 372 | if (ath9k_hw_calibrate(ah, ah->curchan, |
17d7904d | 373 | sc->rx_chainmask, longcal, |
ff37e337 S |
374 | &iscaldone)) { |
375 | if (longcal) | |
17d7904d | 376 | sc->ani.noise_floor = |
ff37e337 | 377 | ath9k_hw_getchan_noise(ah, |
2660b81a | 378 | ah->curchan); |
ff37e337 S |
379 | |
380 | DPRINTF(sc, ATH_DBG_ANI, | |
04bd4638 | 381 | "calibrate chan %u/%x nf: %d\n", |
2660b81a S |
382 | ah->curchan->channel, |
383 | ah->curchan->channelFlags, | |
17d7904d | 384 | sc->ani.noise_floor); |
ff37e337 S |
385 | } else { |
386 | DPRINTF(sc, ATH_DBG_ANY, | |
04bd4638 | 387 | "calibrate chan %u/%x failed\n", |
2660b81a S |
388 | ah->curchan->channel, |
389 | ah->curchan->channelFlags); | |
ff37e337 | 390 | } |
17d7904d | 391 | sc->ani.caldone = iscaldone; |
ff37e337 S |
392 | } |
393 | } | |
394 | ||
395 | /* | |
396 | * Set timer interval based on previous results. | |
397 | * The interval must be the shortest necessary to satisfy ANI, | |
398 | * short calibration and long calibration. | |
399 | */ | |
aac9207e | 400 | cal_interval = ATH_LONG_CALINTERVAL; |
2660b81a | 401 | if (sc->sc_ah->config.enable_ani) |
aac9207e | 402 | cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); |
17d7904d | 403 | if (!sc->ani.caldone) |
ff37e337 S |
404 | cal_interval = min(cal_interval, (u32)ATH_SHORT_CALINTERVAL); |
405 | ||
17d7904d | 406 | mod_timer(&sc->ani.timer, jiffies + msecs_to_jiffies(cal_interval)); |
ff37e337 S |
407 | } |
408 | ||
409 | /* | |
410 | * Update tx/rx chainmask. For legacy association, | |
411 | * hard code chainmask to 1x1, for 11n association, use | |
c97c92d9 VT |
412 | * the chainmask configuration, for bt coexistence, use |
413 | * the chainmask configuration even in legacy mode. | |
ff37e337 S |
414 | */ |
415 | static void ath_update_chainmask(struct ath_softc *sc, int is_ht) | |
416 | { | |
417 | sc->sc_flags |= SC_OP_CHAINMASK_UPDATE; | |
c97c92d9 | 418 | if (is_ht || |
2660b81a S |
419 | (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BT_COEX)) { |
420 | sc->tx_chainmask = sc->sc_ah->caps.tx_chainmask; | |
421 | sc->rx_chainmask = sc->sc_ah->caps.rx_chainmask; | |
ff37e337 | 422 | } else { |
17d7904d S |
423 | sc->tx_chainmask = 1; |
424 | sc->rx_chainmask = 1; | |
ff37e337 S |
425 | } |
426 | ||
04bd4638 | 427 | DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n", |
17d7904d | 428 | sc->tx_chainmask, sc->rx_chainmask); |
ff37e337 S |
429 | } |
430 | ||
431 | static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
432 | { | |
433 | struct ath_node *an; | |
434 | ||
435 | an = (struct ath_node *)sta->drv_priv; | |
436 | ||
437 | if (sc->sc_flags & SC_OP_TXAGGR) | |
438 | ath_tx_node_init(sc, an); | |
439 | ||
440 | an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR + | |
441 | sta->ht_cap.ampdu_factor); | |
442 | an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density); | |
443 | } | |
444 | ||
445 | static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
446 | { | |
447 | struct ath_node *an = (struct ath_node *)sta->drv_priv; | |
448 | ||
449 | if (sc->sc_flags & SC_OP_TXAGGR) | |
450 | ath_tx_node_cleanup(sc, an); | |
451 | } | |
452 | ||
453 | static void ath9k_tasklet(unsigned long data) | |
454 | { | |
455 | struct ath_softc *sc = (struct ath_softc *)data; | |
17d7904d | 456 | u32 status = sc->intrstatus; |
ff37e337 S |
457 | |
458 | if (status & ATH9K_INT_FATAL) { | |
459 | /* need a chip reset */ | |
460 | ath_reset(sc, false); | |
461 | return; | |
462 | } else { | |
463 | ||
464 | if (status & | |
465 | (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) { | |
b77f483f | 466 | spin_lock_bh(&sc->rx.rxflushlock); |
ff37e337 | 467 | ath_rx_tasklet(sc, 0); |
b77f483f | 468 | spin_unlock_bh(&sc->rx.rxflushlock); |
ff37e337 S |
469 | } |
470 | /* XXX: optimize this */ | |
471 | if (status & ATH9K_INT_TX) | |
472 | ath_tx_tasklet(sc); | |
473 | } | |
474 | ||
475 | /* re-enable hardware interrupt */ | |
17d7904d | 476 | ath9k_hw_set_interrupts(sc->sc_ah, sc->imask); |
ff37e337 S |
477 | } |
478 | ||
6baff7f9 | 479 | irqreturn_t ath_isr(int irq, void *dev) |
ff37e337 S |
480 | { |
481 | struct ath_softc *sc = dev; | |
cbe61d8a | 482 | struct ath_hw *ah = sc->sc_ah; |
ff37e337 S |
483 | enum ath9k_int status; |
484 | bool sched = false; | |
485 | ||
486 | do { | |
487 | if (sc->sc_flags & SC_OP_INVALID) { | |
488 | /* | |
489 | * The hardware is not ready/present, don't | |
490 | * touch anything. Note this can happen early | |
491 | * on if the IRQ is shared. | |
492 | */ | |
493 | return IRQ_NONE; | |
494 | } | |
495 | if (!ath9k_hw_intrpend(ah)) { /* shared irq, not for us */ | |
496 | return IRQ_NONE; | |
497 | } | |
498 | ||
499 | /* | |
500 | * Figure out the reason(s) for the interrupt. Note | |
501 | * that the hal returns a pseudo-ISR that may include | |
502 | * bits we haven't explicitly enabled so we mask the | |
503 | * value to insure we only process bits we requested. | |
504 | */ | |
505 | ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ | |
506 | ||
17d7904d | 507 | status &= sc->imask; /* discard unasked-for bits */ |
ff37e337 S |
508 | |
509 | /* | |
510 | * If there are no status bits set, then this interrupt was not | |
511 | * for me (should have been caught above). | |
512 | */ | |
513 | if (!status) | |
514 | return IRQ_NONE; | |
515 | ||
17d7904d | 516 | sc->intrstatus = status; |
ff37e337 S |
517 | |
518 | if (status & ATH9K_INT_FATAL) { | |
519 | /* need a chip reset */ | |
520 | sched = true; | |
521 | } else if (status & ATH9K_INT_RXORN) { | |
522 | /* need a chip reset */ | |
523 | sched = true; | |
524 | } else { | |
525 | if (status & ATH9K_INT_SWBA) { | |
526 | /* schedule a tasklet for beacon handling */ | |
527 | tasklet_schedule(&sc->bcon_tasklet); | |
528 | } | |
529 | if (status & ATH9K_INT_RXEOL) { | |
530 | /* | |
531 | * NB: the hardware should re-read the link when | |
532 | * RXE bit is written, but it doesn't work | |
533 | * at least on older hardware revs. | |
534 | */ | |
535 | sched = true; | |
536 | } | |
537 | ||
538 | if (status & ATH9K_INT_TXURN) | |
539 | /* bump tx trigger level */ | |
540 | ath9k_hw_updatetxtriglevel(ah, true); | |
541 | /* XXX: optimize this */ | |
542 | if (status & ATH9K_INT_RX) | |
543 | sched = true; | |
544 | if (status & ATH9K_INT_TX) | |
545 | sched = true; | |
546 | if (status & ATH9K_INT_BMISS) | |
547 | sched = true; | |
548 | /* carrier sense timeout */ | |
549 | if (status & ATH9K_INT_CST) | |
550 | sched = true; | |
551 | if (status & ATH9K_INT_MIB) { | |
552 | /* | |
553 | * Disable interrupts until we service the MIB | |
554 | * interrupt; otherwise it will continue to | |
555 | * fire. | |
556 | */ | |
557 | ath9k_hw_set_interrupts(ah, 0); | |
558 | /* | |
559 | * Let the hal handle the event. We assume | |
560 | * it will clear whatever condition caused | |
561 | * the interrupt. | |
562 | */ | |
17d7904d S |
563 | ath9k_hw_procmibevent(ah, &sc->nodestats); |
564 | ath9k_hw_set_interrupts(ah, sc->imask); | |
ff37e337 S |
565 | } |
566 | if (status & ATH9K_INT_TIM_TIMER) { | |
2660b81a | 567 | if (!(ah->caps.hw_caps & |
ff37e337 S |
568 | ATH9K_HW_CAP_AUTOSLEEP)) { |
569 | /* Clear RxAbort bit so that we can | |
570 | * receive frames */ | |
3cbb5dd7 | 571 | ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); |
ff37e337 S |
572 | ath9k_hw_setrxabort(ah, 0); |
573 | sched = true; | |
3cbb5dd7 | 574 | sc->sc_flags |= SC_OP_WAIT_FOR_BEACON; |
ff37e337 S |
575 | } |
576 | } | |
577 | } | |
578 | } while (0); | |
579 | ||
817e11de S |
580 | ath_debug_stat_interrupt(sc, status); |
581 | ||
ff37e337 S |
582 | if (sched) { |
583 | /* turn off every interrupt except SWBA */ | |
17d7904d | 584 | ath9k_hw_set_interrupts(ah, (sc->imask & ATH9K_INT_SWBA)); |
ff37e337 S |
585 | tasklet_schedule(&sc->intr_tq); |
586 | } | |
587 | ||
588 | return IRQ_HANDLED; | |
589 | } | |
590 | ||
f078f209 | 591 | static u32 ath_get_extchanmode(struct ath_softc *sc, |
99405f93 | 592 | struct ieee80211_channel *chan, |
094d05dc | 593 | enum nl80211_channel_type channel_type) |
f078f209 LR |
594 | { |
595 | u32 chanmode = 0; | |
f078f209 LR |
596 | |
597 | switch (chan->band) { | |
598 | case IEEE80211_BAND_2GHZ: | |
094d05dc S |
599 | switch(channel_type) { |
600 | case NL80211_CHAN_NO_HT: | |
601 | case NL80211_CHAN_HT20: | |
f078f209 | 602 | chanmode = CHANNEL_G_HT20; |
094d05dc S |
603 | break; |
604 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 605 | chanmode = CHANNEL_G_HT40PLUS; |
094d05dc S |
606 | break; |
607 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 608 | chanmode = CHANNEL_G_HT40MINUS; |
094d05dc S |
609 | break; |
610 | } | |
f078f209 LR |
611 | break; |
612 | case IEEE80211_BAND_5GHZ: | |
094d05dc S |
613 | switch(channel_type) { |
614 | case NL80211_CHAN_NO_HT: | |
615 | case NL80211_CHAN_HT20: | |
f078f209 | 616 | chanmode = CHANNEL_A_HT20; |
094d05dc S |
617 | break; |
618 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 619 | chanmode = CHANNEL_A_HT40PLUS; |
094d05dc S |
620 | break; |
621 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 622 | chanmode = CHANNEL_A_HT40MINUS; |
094d05dc S |
623 | break; |
624 | } | |
f078f209 LR |
625 | break; |
626 | default: | |
627 | break; | |
628 | } | |
629 | ||
630 | return chanmode; | |
631 | } | |
632 | ||
ff37e337 S |
633 | static int ath_keyset(struct ath_softc *sc, u16 keyix, |
634 | struct ath9k_keyval *hk, const u8 mac[ETH_ALEN]) | |
635 | { | |
636 | bool status; | |
637 | ||
638 | status = ath9k_hw_set_keycache_entry(sc->sc_ah, | |
639 | keyix, hk, mac, false); | |
640 | ||
641 | return status != false; | |
642 | } | |
f078f209 | 643 | |
6ace2891 | 644 | static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key, |
f078f209 LR |
645 | struct ath9k_keyval *hk, |
646 | const u8 *addr) | |
647 | { | |
6ace2891 JM |
648 | const u8 *key_rxmic; |
649 | const u8 *key_txmic; | |
f078f209 | 650 | |
6ace2891 JM |
651 | key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; |
652 | key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; | |
f078f209 LR |
653 | |
654 | if (addr == NULL) { | |
655 | /* Group key installation */ | |
6ace2891 JM |
656 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
657 | return ath_keyset(sc, keyix, hk, addr); | |
f078f209 | 658 | } |
17d7904d | 659 | if (!sc->splitmic) { |
f078f209 LR |
660 | /* |
661 | * data key goes at first index, | |
662 | * the hal handles the MIC keys at index+64. | |
663 | */ | |
664 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
665 | memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic)); | |
6ace2891 | 666 | return ath_keyset(sc, keyix, hk, addr); |
f078f209 LR |
667 | } |
668 | /* | |
669 | * TX key goes at first index, RX key at +32. | |
670 | * The hal handles the MIC keys at index+64. | |
671 | */ | |
672 | memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); | |
6ace2891 | 673 | if (!ath_keyset(sc, keyix, hk, NULL)) { |
f078f209 LR |
674 | /* Txmic entry failed. No need to proceed further */ |
675 | DPRINTF(sc, ATH_DBG_KEYCACHE, | |
04bd4638 | 676 | "Setting TX MIC Key Failed\n"); |
f078f209 LR |
677 | return 0; |
678 | } | |
679 | ||
680 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
681 | /* XXX delete tx key on failure? */ | |
6ace2891 JM |
682 | return ath_keyset(sc, keyix + 32, hk, addr); |
683 | } | |
684 | ||
685 | static int ath_reserve_key_cache_slot_tkip(struct ath_softc *sc) | |
686 | { | |
687 | int i; | |
688 | ||
17d7904d S |
689 | for (i = IEEE80211_WEP_NKID; i < sc->keymax / 2; i++) { |
690 | if (test_bit(i, sc->keymap) || | |
691 | test_bit(i + 64, sc->keymap)) | |
6ace2891 | 692 | continue; /* At least one part of TKIP key allocated */ |
17d7904d S |
693 | if (sc->splitmic && |
694 | (test_bit(i + 32, sc->keymap) || | |
695 | test_bit(i + 64 + 32, sc->keymap))) | |
6ace2891 JM |
696 | continue; /* At least one part of TKIP key allocated */ |
697 | ||
698 | /* Found a free slot for a TKIP key */ | |
699 | return i; | |
700 | } | |
701 | return -1; | |
702 | } | |
703 | ||
704 | static int ath_reserve_key_cache_slot(struct ath_softc *sc) | |
705 | { | |
706 | int i; | |
707 | ||
708 | /* First, try to find slots that would not be available for TKIP. */ | |
17d7904d S |
709 | if (sc->splitmic) { |
710 | for (i = IEEE80211_WEP_NKID; i < sc->keymax / 4; i++) { | |
711 | if (!test_bit(i, sc->keymap) && | |
712 | (test_bit(i + 32, sc->keymap) || | |
713 | test_bit(i + 64, sc->keymap) || | |
714 | test_bit(i + 64 + 32, sc->keymap))) | |
6ace2891 | 715 | return i; |
17d7904d S |
716 | if (!test_bit(i + 32, sc->keymap) && |
717 | (test_bit(i, sc->keymap) || | |
718 | test_bit(i + 64, sc->keymap) || | |
719 | test_bit(i + 64 + 32, sc->keymap))) | |
6ace2891 | 720 | return i + 32; |
17d7904d S |
721 | if (!test_bit(i + 64, sc->keymap) && |
722 | (test_bit(i , sc->keymap) || | |
723 | test_bit(i + 32, sc->keymap) || | |
724 | test_bit(i + 64 + 32, sc->keymap))) | |
ea612132 | 725 | return i + 64; |
17d7904d S |
726 | if (!test_bit(i + 64 + 32, sc->keymap) && |
727 | (test_bit(i, sc->keymap) || | |
728 | test_bit(i + 32, sc->keymap) || | |
729 | test_bit(i + 64, sc->keymap))) | |
ea612132 | 730 | return i + 64 + 32; |
6ace2891 JM |
731 | } |
732 | } else { | |
17d7904d S |
733 | for (i = IEEE80211_WEP_NKID; i < sc->keymax / 2; i++) { |
734 | if (!test_bit(i, sc->keymap) && | |
735 | test_bit(i + 64, sc->keymap)) | |
6ace2891 | 736 | return i; |
17d7904d S |
737 | if (test_bit(i, sc->keymap) && |
738 | !test_bit(i + 64, sc->keymap)) | |
6ace2891 JM |
739 | return i + 64; |
740 | } | |
741 | } | |
742 | ||
743 | /* No partially used TKIP slots, pick any available slot */ | |
17d7904d | 744 | for (i = IEEE80211_WEP_NKID; i < sc->keymax; i++) { |
be2864cf JM |
745 | /* Do not allow slots that could be needed for TKIP group keys |
746 | * to be used. This limitation could be removed if we know that | |
747 | * TKIP will not be used. */ | |
748 | if (i >= 64 && i < 64 + IEEE80211_WEP_NKID) | |
749 | continue; | |
17d7904d | 750 | if (sc->splitmic) { |
be2864cf JM |
751 | if (i >= 32 && i < 32 + IEEE80211_WEP_NKID) |
752 | continue; | |
753 | if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID) | |
754 | continue; | |
755 | } | |
756 | ||
17d7904d | 757 | if (!test_bit(i, sc->keymap)) |
6ace2891 JM |
758 | return i; /* Found a free slot for a key */ |
759 | } | |
760 | ||
761 | /* No free slot found */ | |
762 | return -1; | |
f078f209 LR |
763 | } |
764 | ||
765 | static int ath_key_config(struct ath_softc *sc, | |
dc822b5d | 766 | struct ieee80211_sta *sta, |
f078f209 LR |
767 | struct ieee80211_key_conf *key) |
768 | { | |
f078f209 LR |
769 | struct ath9k_keyval hk; |
770 | const u8 *mac = NULL; | |
771 | int ret = 0; | |
6ace2891 | 772 | int idx; |
f078f209 LR |
773 | |
774 | memset(&hk, 0, sizeof(hk)); | |
775 | ||
776 | switch (key->alg) { | |
777 | case ALG_WEP: | |
778 | hk.kv_type = ATH9K_CIPHER_WEP; | |
779 | break; | |
780 | case ALG_TKIP: | |
781 | hk.kv_type = ATH9K_CIPHER_TKIP; | |
782 | break; | |
783 | case ALG_CCMP: | |
784 | hk.kv_type = ATH9K_CIPHER_AES_CCM; | |
785 | break; | |
786 | default: | |
ca470b29 | 787 | return -EOPNOTSUPP; |
f078f209 LR |
788 | } |
789 | ||
6ace2891 | 790 | hk.kv_len = key->keylen; |
f078f209 LR |
791 | memcpy(hk.kv_val, key->key, key->keylen); |
792 | ||
6ace2891 JM |
793 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
794 | /* For now, use the default keys for broadcast keys. This may | |
795 | * need to change with virtual interfaces. */ | |
796 | idx = key->keyidx; | |
797 | } else if (key->keyidx) { | |
798 | struct ieee80211_vif *vif; | |
f078f209 | 799 | |
dc822b5d JB |
800 | if (WARN_ON(!sta)) |
801 | return -EOPNOTSUPP; | |
802 | mac = sta->addr; | |
803 | ||
17d7904d | 804 | vif = sc->vifs[0]; |
6ace2891 JM |
805 | if (vif->type != NL80211_IFTYPE_AP) { |
806 | /* Only keyidx 0 should be used with unicast key, but | |
807 | * allow this for client mode for now. */ | |
808 | idx = key->keyidx; | |
809 | } else | |
810 | return -EIO; | |
f078f209 | 811 | } else { |
dc822b5d JB |
812 | if (WARN_ON(!sta)) |
813 | return -EOPNOTSUPP; | |
814 | mac = sta->addr; | |
815 | ||
6ace2891 JM |
816 | if (key->alg == ALG_TKIP) |
817 | idx = ath_reserve_key_cache_slot_tkip(sc); | |
818 | else | |
819 | idx = ath_reserve_key_cache_slot(sc); | |
820 | if (idx < 0) | |
ca470b29 | 821 | return -ENOSPC; /* no free key cache entries */ |
f078f209 LR |
822 | } |
823 | ||
824 | if (key->alg == ALG_TKIP) | |
6ace2891 | 825 | ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac); |
f078f209 | 826 | else |
6ace2891 | 827 | ret = ath_keyset(sc, idx, &hk, mac); |
f078f209 LR |
828 | |
829 | if (!ret) | |
830 | return -EIO; | |
831 | ||
17d7904d | 832 | set_bit(idx, sc->keymap); |
6ace2891 | 833 | if (key->alg == ALG_TKIP) { |
17d7904d S |
834 | set_bit(idx + 64, sc->keymap); |
835 | if (sc->splitmic) { | |
836 | set_bit(idx + 32, sc->keymap); | |
837 | set_bit(idx + 64 + 32, sc->keymap); | |
6ace2891 JM |
838 | } |
839 | } | |
840 | ||
841 | return idx; | |
f078f209 LR |
842 | } |
843 | ||
844 | static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key) | |
845 | { | |
6ace2891 JM |
846 | ath9k_hw_keyreset(sc->sc_ah, key->hw_key_idx); |
847 | if (key->hw_key_idx < IEEE80211_WEP_NKID) | |
848 | return; | |
849 | ||
17d7904d | 850 | clear_bit(key->hw_key_idx, sc->keymap); |
6ace2891 JM |
851 | if (key->alg != ALG_TKIP) |
852 | return; | |
f078f209 | 853 | |
17d7904d S |
854 | clear_bit(key->hw_key_idx + 64, sc->keymap); |
855 | if (sc->splitmic) { | |
856 | clear_bit(key->hw_key_idx + 32, sc->keymap); | |
857 | clear_bit(key->hw_key_idx + 64 + 32, sc->keymap); | |
6ace2891 | 858 | } |
f078f209 LR |
859 | } |
860 | ||
eb2599ca S |
861 | static void setup_ht_cap(struct ath_softc *sc, |
862 | struct ieee80211_sta_ht_cap *ht_info) | |
f078f209 | 863 | { |
60653678 S |
864 | #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */ |
865 | #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */ | |
f078f209 | 866 | |
d9fe60de JB |
867 | ht_info->ht_supported = true; |
868 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
869 | IEEE80211_HT_CAP_SM_PS | | |
870 | IEEE80211_HT_CAP_SGI_40 | | |
871 | IEEE80211_HT_CAP_DSSSCCK40; | |
f078f209 | 872 | |
60653678 S |
873 | ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536; |
874 | ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8; | |
eb2599ca | 875 | |
d9fe60de JB |
876 | /* set up supported mcs set */ |
877 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
eb2599ca | 878 | |
17d7904d | 879 | switch(sc->rx_chainmask) { |
eb2599ca S |
880 | case 1: |
881 | ht_info->mcs.rx_mask[0] = 0xff; | |
882 | break; | |
3c457265 | 883 | case 3: |
eb2599ca S |
884 | case 5: |
885 | case 7: | |
886 | default: | |
887 | ht_info->mcs.rx_mask[0] = 0xff; | |
888 | ht_info->mcs.rx_mask[1] = 0xff; | |
889 | break; | |
890 | } | |
891 | ||
d9fe60de | 892 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
f078f209 LR |
893 | } |
894 | ||
8feceb67 | 895 | static void ath9k_bss_assoc_info(struct ath_softc *sc, |
5640b08e | 896 | struct ieee80211_vif *vif, |
8feceb67 | 897 | struct ieee80211_bss_conf *bss_conf) |
f078f209 | 898 | { |
17d7904d | 899 | struct ath_vif *avp = (void *)vif->drv_priv; |
f078f209 | 900 | |
8feceb67 | 901 | if (bss_conf->assoc) { |
094d05dc | 902 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info ASSOC %d, bssid: %pM\n", |
17d7904d | 903 | bss_conf->aid, sc->curbssid); |
f078f209 | 904 | |
8feceb67 | 905 | /* New association, store aid */ |
d97809db | 906 | if (avp->av_opmode == NL80211_IFTYPE_STATION) { |
17d7904d | 907 | sc->curaid = bss_conf->aid; |
ba52da58 | 908 | ath9k_hw_write_associd(sc); |
8feceb67 | 909 | } |
f078f209 | 910 | |
8feceb67 VT |
911 | /* Configure the beacon */ |
912 | ath_beacon_config(sc, 0); | |
913 | sc->sc_flags |= SC_OP_BEACONS; | |
f078f209 | 914 | |
8feceb67 | 915 | /* Reset rssi stats */ |
17d7904d S |
916 | sc->nodestats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER; |
917 | sc->nodestats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER; | |
918 | sc->nodestats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER; | |
919 | sc->nodestats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER; | |
f078f209 | 920 | |
6f255425 | 921 | /* Start ANI */ |
17d7904d | 922 | mod_timer(&sc->ani.timer, |
6f255425 LR |
923 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
924 | ||
8feceb67 | 925 | } else { |
04bd4638 | 926 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISSOC\n"); |
17d7904d | 927 | sc->curaid = 0; |
f078f209 | 928 | } |
8feceb67 | 929 | } |
f078f209 | 930 | |
8feceb67 VT |
931 | /********************************/ |
932 | /* LED functions */ | |
933 | /********************************/ | |
f078f209 | 934 | |
f2bffa7e VT |
935 | static void ath_led_blink_work(struct work_struct *work) |
936 | { | |
937 | struct ath_softc *sc = container_of(work, struct ath_softc, | |
938 | ath_led_blink_work.work); | |
939 | ||
940 | if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED)) | |
941 | return; | |
942 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, | |
943 | (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0); | |
944 | ||
945 | queue_delayed_work(sc->hw->workqueue, &sc->ath_led_blink_work, | |
946 | (sc->sc_flags & SC_OP_LED_ON) ? | |
947 | msecs_to_jiffies(sc->led_off_duration) : | |
948 | msecs_to_jiffies(sc->led_on_duration)); | |
949 | ||
950 | sc->led_on_duration = | |
951 | max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25); | |
952 | sc->led_off_duration = | |
953 | max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10); | |
954 | sc->led_on_cnt = sc->led_off_cnt = 0; | |
955 | if (sc->sc_flags & SC_OP_LED_ON) | |
956 | sc->sc_flags &= ~SC_OP_LED_ON; | |
957 | else | |
958 | sc->sc_flags |= SC_OP_LED_ON; | |
959 | } | |
960 | ||
8feceb67 VT |
961 | static void ath_led_brightness(struct led_classdev *led_cdev, |
962 | enum led_brightness brightness) | |
963 | { | |
964 | struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); | |
965 | struct ath_softc *sc = led->sc; | |
f078f209 | 966 | |
8feceb67 VT |
967 | switch (brightness) { |
968 | case LED_OFF: | |
969 | if (led->led_type == ATH_LED_ASSOC || | |
f2bffa7e VT |
970 | led->led_type == ATH_LED_RADIO) { |
971 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, | |
972 | (led->led_type == ATH_LED_RADIO)); | |
8feceb67 | 973 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; |
f2bffa7e VT |
974 | if (led->led_type == ATH_LED_RADIO) |
975 | sc->sc_flags &= ~SC_OP_LED_ON; | |
976 | } else { | |
977 | sc->led_off_cnt++; | |
978 | } | |
8feceb67 VT |
979 | break; |
980 | case LED_FULL: | |
f2bffa7e | 981 | if (led->led_type == ATH_LED_ASSOC) { |
8feceb67 | 982 | sc->sc_flags |= SC_OP_LED_ASSOCIATED; |
f2bffa7e VT |
983 | queue_delayed_work(sc->hw->workqueue, |
984 | &sc->ath_led_blink_work, 0); | |
985 | } else if (led->led_type == ATH_LED_RADIO) { | |
986 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0); | |
987 | sc->sc_flags |= SC_OP_LED_ON; | |
988 | } else { | |
989 | sc->led_on_cnt++; | |
990 | } | |
8feceb67 VT |
991 | break; |
992 | default: | |
993 | break; | |
f078f209 | 994 | } |
8feceb67 | 995 | } |
f078f209 | 996 | |
8feceb67 VT |
997 | static int ath_register_led(struct ath_softc *sc, struct ath_led *led, |
998 | char *trigger) | |
999 | { | |
1000 | int ret; | |
f078f209 | 1001 | |
8feceb67 VT |
1002 | led->sc = sc; |
1003 | led->led_cdev.name = led->name; | |
1004 | led->led_cdev.default_trigger = trigger; | |
1005 | led->led_cdev.brightness_set = ath_led_brightness; | |
f078f209 | 1006 | |
8feceb67 VT |
1007 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); |
1008 | if (ret) | |
1009 | DPRINTF(sc, ATH_DBG_FATAL, | |
1010 | "Failed to register led:%s", led->name); | |
1011 | else | |
1012 | led->registered = 1; | |
1013 | return ret; | |
1014 | } | |
f078f209 | 1015 | |
8feceb67 VT |
1016 | static void ath_unregister_led(struct ath_led *led) |
1017 | { | |
1018 | if (led->registered) { | |
1019 | led_classdev_unregister(&led->led_cdev); | |
1020 | led->registered = 0; | |
f078f209 | 1021 | } |
f078f209 LR |
1022 | } |
1023 | ||
8feceb67 | 1024 | static void ath_deinit_leds(struct ath_softc *sc) |
f078f209 | 1025 | { |
f2bffa7e | 1026 | cancel_delayed_work_sync(&sc->ath_led_blink_work); |
8feceb67 VT |
1027 | ath_unregister_led(&sc->assoc_led); |
1028 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; | |
1029 | ath_unregister_led(&sc->tx_led); | |
1030 | ath_unregister_led(&sc->rx_led); | |
1031 | ath_unregister_led(&sc->radio_led); | |
1032 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
1033 | } | |
f078f209 | 1034 | |
8feceb67 VT |
1035 | static void ath_init_leds(struct ath_softc *sc) |
1036 | { | |
1037 | char *trigger; | |
1038 | int ret; | |
f078f209 | 1039 | |
8feceb67 VT |
1040 | /* Configure gpio 1 for output */ |
1041 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, | |
1042 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
1043 | /* LED off, active low */ | |
1044 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
7dcfdcd9 | 1045 | |
f2bffa7e VT |
1046 | INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work); |
1047 | ||
8feceb67 VT |
1048 | trigger = ieee80211_get_radio_led_name(sc->hw); |
1049 | snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), | |
0818cb8a | 1050 | "ath9k-%s::radio", wiphy_name(sc->hw->wiphy)); |
8feceb67 VT |
1051 | ret = ath_register_led(sc, &sc->radio_led, trigger); |
1052 | sc->radio_led.led_type = ATH_LED_RADIO; | |
1053 | if (ret) | |
1054 | goto fail; | |
7dcfdcd9 | 1055 | |
8feceb67 VT |
1056 | trigger = ieee80211_get_assoc_led_name(sc->hw); |
1057 | snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), | |
0818cb8a | 1058 | "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy)); |
8feceb67 VT |
1059 | ret = ath_register_led(sc, &sc->assoc_led, trigger); |
1060 | sc->assoc_led.led_type = ATH_LED_ASSOC; | |
1061 | if (ret) | |
1062 | goto fail; | |
f078f209 | 1063 | |
8feceb67 VT |
1064 | trigger = ieee80211_get_tx_led_name(sc->hw); |
1065 | snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), | |
0818cb8a | 1066 | "ath9k-%s::tx", wiphy_name(sc->hw->wiphy)); |
8feceb67 VT |
1067 | ret = ath_register_led(sc, &sc->tx_led, trigger); |
1068 | sc->tx_led.led_type = ATH_LED_TX; | |
1069 | if (ret) | |
1070 | goto fail; | |
f078f209 | 1071 | |
8feceb67 VT |
1072 | trigger = ieee80211_get_rx_led_name(sc->hw); |
1073 | snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), | |
0818cb8a | 1074 | "ath9k-%s::rx", wiphy_name(sc->hw->wiphy)); |
8feceb67 VT |
1075 | ret = ath_register_led(sc, &sc->rx_led, trigger); |
1076 | sc->rx_led.led_type = ATH_LED_RX; | |
1077 | if (ret) | |
1078 | goto fail; | |
f078f209 | 1079 | |
8feceb67 VT |
1080 | return; |
1081 | ||
1082 | fail: | |
1083 | ath_deinit_leds(sc); | |
f078f209 LR |
1084 | } |
1085 | ||
e97275cb | 1086 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
9c84b797 | 1087 | |
500c064d VT |
1088 | /*******************/ |
1089 | /* Rfkill */ | |
1090 | /*******************/ | |
1091 | ||
1092 | static void ath_radio_enable(struct ath_softc *sc) | |
1093 | { | |
cbe61d8a | 1094 | struct ath_hw *ah = sc->sc_ah; |
ae8d2858 LR |
1095 | struct ieee80211_channel *channel = sc->hw->conf.channel; |
1096 | int r; | |
500c064d | 1097 | |
3cbb5dd7 | 1098 | ath9k_ps_wakeup(sc); |
500c064d | 1099 | spin_lock_bh(&sc->sc_resetlock); |
ae8d2858 | 1100 | |
2660b81a | 1101 | r = ath9k_hw_reset(ah, ah->curchan, false); |
ae8d2858 LR |
1102 | |
1103 | if (r) { | |
500c064d | 1104 | DPRINTF(sc, ATH_DBG_FATAL, |
ae8d2858 LR |
1105 | "Unable to reset channel %u (%uMhz) ", |
1106 | "reset status %u\n", | |
1107 | channel->center_freq, r); | |
500c064d VT |
1108 | } |
1109 | spin_unlock_bh(&sc->sc_resetlock); | |
1110 | ||
1111 | ath_update_txpow(sc); | |
1112 | if (ath_startrecv(sc) != 0) { | |
1113 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1114 | "Unable to restart recv logic\n"); |
500c064d VT |
1115 | return; |
1116 | } | |
1117 | ||
1118 | if (sc->sc_flags & SC_OP_BEACONS) | |
1119 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ | |
1120 | ||
1121 | /* Re-Enable interrupts */ | |
17d7904d | 1122 | ath9k_hw_set_interrupts(ah, sc->imask); |
500c064d VT |
1123 | |
1124 | /* Enable LED */ | |
1125 | ath9k_hw_cfg_output(ah, ATH_LED_PIN, | |
1126 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
1127 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0); | |
1128 | ||
1129 | ieee80211_wake_queues(sc->hw); | |
3cbb5dd7 | 1130 | ath9k_ps_restore(sc); |
500c064d VT |
1131 | } |
1132 | ||
1133 | static void ath_radio_disable(struct ath_softc *sc) | |
1134 | { | |
cbe61d8a | 1135 | struct ath_hw *ah = sc->sc_ah; |
ae8d2858 LR |
1136 | struct ieee80211_channel *channel = sc->hw->conf.channel; |
1137 | int r; | |
500c064d | 1138 | |
3cbb5dd7 | 1139 | ath9k_ps_wakeup(sc); |
500c064d VT |
1140 | ieee80211_stop_queues(sc->hw); |
1141 | ||
1142 | /* Disable LED */ | |
1143 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1); | |
1144 | ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN); | |
1145 | ||
1146 | /* Disable interrupts */ | |
1147 | ath9k_hw_set_interrupts(ah, 0); | |
1148 | ||
043a0405 | 1149 | ath_drain_all_txq(sc, false); /* clear pending tx frames */ |
500c064d VT |
1150 | ath_stoprecv(sc); /* turn off frame recv */ |
1151 | ath_flushrecv(sc); /* flush recv queue */ | |
1152 | ||
1153 | spin_lock_bh(&sc->sc_resetlock); | |
2660b81a | 1154 | r = ath9k_hw_reset(ah, ah->curchan, false); |
ae8d2858 | 1155 | if (r) { |
500c064d | 1156 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1157 | "Unable to reset channel %u (%uMhz) " |
ae8d2858 LR |
1158 | "reset status %u\n", |
1159 | channel->center_freq, r); | |
500c064d VT |
1160 | } |
1161 | spin_unlock_bh(&sc->sc_resetlock); | |
1162 | ||
1163 | ath9k_hw_phy_disable(ah); | |
1164 | ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP); | |
3cbb5dd7 | 1165 | ath9k_ps_restore(sc); |
500c064d VT |
1166 | } |
1167 | ||
1168 | static bool ath_is_rfkill_set(struct ath_softc *sc) | |
1169 | { | |
cbe61d8a | 1170 | struct ath_hw *ah = sc->sc_ah; |
500c064d | 1171 | |
2660b81a S |
1172 | return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == |
1173 | ah->rfkill_polarity; | |
500c064d VT |
1174 | } |
1175 | ||
1176 | /* h/w rfkill poll function */ | |
1177 | static void ath_rfkill_poll(struct work_struct *work) | |
1178 | { | |
1179 | struct ath_softc *sc = container_of(work, struct ath_softc, | |
1180 | rf_kill.rfkill_poll.work); | |
1181 | bool radio_on; | |
1182 | ||
1183 | if (sc->sc_flags & SC_OP_INVALID) | |
1184 | return; | |
1185 | ||
1186 | radio_on = !ath_is_rfkill_set(sc); | |
1187 | ||
1188 | /* | |
1189 | * enable/disable radio only when there is a | |
1190 | * state change in RF switch | |
1191 | */ | |
1192 | if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) { | |
1193 | enum rfkill_state state; | |
1194 | ||
1195 | if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) { | |
1196 | state = radio_on ? RFKILL_STATE_SOFT_BLOCKED | |
1197 | : RFKILL_STATE_HARD_BLOCKED; | |
1198 | } else if (radio_on) { | |
1199 | ath_radio_enable(sc); | |
1200 | state = RFKILL_STATE_UNBLOCKED; | |
1201 | } else { | |
1202 | ath_radio_disable(sc); | |
1203 | state = RFKILL_STATE_HARD_BLOCKED; | |
1204 | } | |
1205 | ||
1206 | if (state == RFKILL_STATE_HARD_BLOCKED) | |
1207 | sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED; | |
1208 | else | |
1209 | sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED; | |
1210 | ||
1211 | rfkill_force_state(sc->rf_kill.rfkill, state); | |
1212 | } | |
1213 | ||
1214 | queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll, | |
1215 | msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL)); | |
1216 | } | |
1217 | ||
1218 | /* s/w rfkill handler */ | |
1219 | static int ath_sw_toggle_radio(void *data, enum rfkill_state state) | |
1220 | { | |
1221 | struct ath_softc *sc = data; | |
1222 | ||
1223 | switch (state) { | |
1224 | case RFKILL_STATE_SOFT_BLOCKED: | |
1225 | if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED | | |
1226 | SC_OP_RFKILL_SW_BLOCKED))) | |
1227 | ath_radio_disable(sc); | |
1228 | sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED; | |
1229 | return 0; | |
1230 | case RFKILL_STATE_UNBLOCKED: | |
1231 | if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) { | |
1232 | sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED; | |
1233 | if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) { | |
1234 | DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the" | |
04bd4638 | 1235 | "radio as it is disabled by h/w\n"); |
500c064d VT |
1236 | return -EPERM; |
1237 | } | |
1238 | ath_radio_enable(sc); | |
1239 | } | |
1240 | return 0; | |
1241 | default: | |
1242 | return -EINVAL; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | /* Init s/w rfkill */ | |
1247 | static int ath_init_sw_rfkill(struct ath_softc *sc) | |
1248 | { | |
1249 | sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy), | |
1250 | RFKILL_TYPE_WLAN); | |
1251 | if (!sc->rf_kill.rfkill) { | |
1252 | DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n"); | |
1253 | return -ENOMEM; | |
1254 | } | |
1255 | ||
1256 | snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), | |
0818cb8a | 1257 | "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy)); |
500c064d VT |
1258 | sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name; |
1259 | sc->rf_kill.rfkill->data = sc; | |
1260 | sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; | |
1261 | sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; | |
1262 | sc->rf_kill.rfkill->user_claim_unsupported = 1; | |
1263 | ||
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | /* Deinitialize rfkill */ | |
1268 | static void ath_deinit_rfkill(struct ath_softc *sc) | |
1269 | { | |
2660b81a | 1270 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
500c064d VT |
1271 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
1272 | ||
1273 | if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) { | |
1274 | rfkill_unregister(sc->rf_kill.rfkill); | |
1275 | sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED; | |
1276 | sc->rf_kill.rfkill = NULL; | |
1277 | } | |
1278 | } | |
9c84b797 S |
1279 | |
1280 | static int ath_start_rfkill_poll(struct ath_softc *sc) | |
1281 | { | |
2660b81a | 1282 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
9c84b797 S |
1283 | queue_delayed_work(sc->hw->workqueue, |
1284 | &sc->rf_kill.rfkill_poll, 0); | |
1285 | ||
1286 | if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) { | |
1287 | if (rfkill_register(sc->rf_kill.rfkill)) { | |
1288 | DPRINTF(sc, ATH_DBG_FATAL, | |
1289 | "Unable to register rfkill\n"); | |
1290 | rfkill_free(sc->rf_kill.rfkill); | |
1291 | ||
1292 | /* Deinitialize the device */ | |
39c3c2f2 | 1293 | ath_cleanup(sc); |
9c84b797 S |
1294 | return -EIO; |
1295 | } else { | |
1296 | sc->sc_flags |= SC_OP_RFKILL_REGISTERED; | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | return 0; | |
1301 | } | |
500c064d VT |
1302 | #endif /* CONFIG_RFKILL */ |
1303 | ||
6baff7f9 | 1304 | void ath_cleanup(struct ath_softc *sc) |
39c3c2f2 GJ |
1305 | { |
1306 | ath_detach(sc); | |
1307 | free_irq(sc->irq, sc); | |
1308 | ath_bus_cleanup(sc); | |
1309 | ieee80211_free_hw(sc->hw); | |
1310 | } | |
1311 | ||
6baff7f9 | 1312 | void ath_detach(struct ath_softc *sc) |
f078f209 | 1313 | { |
8feceb67 | 1314 | struct ieee80211_hw *hw = sc->hw; |
9c84b797 | 1315 | int i = 0; |
f078f209 | 1316 | |
3cbb5dd7 VN |
1317 | ath9k_ps_wakeup(sc); |
1318 | ||
04bd4638 | 1319 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n"); |
f078f209 | 1320 | |
e97275cb | 1321 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d VT |
1322 | ath_deinit_rfkill(sc); |
1323 | #endif | |
3fcdfb4b VT |
1324 | ath_deinit_leds(sc); |
1325 | ||
1326 | ieee80211_unregister_hw(hw); | |
8feceb67 VT |
1327 | ath_rx_cleanup(sc); |
1328 | ath_tx_cleanup(sc); | |
f078f209 | 1329 | |
9c84b797 S |
1330 | tasklet_kill(&sc->intr_tq); |
1331 | tasklet_kill(&sc->bcon_tasklet); | |
f078f209 | 1332 | |
9c84b797 S |
1333 | if (!(sc->sc_flags & SC_OP_INVALID)) |
1334 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); | |
8feceb67 | 1335 | |
9c84b797 S |
1336 | /* cleanup tx queues */ |
1337 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1338 | if (ATH_TXQ_SETUP(sc, i)) | |
b77f483f | 1339 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
9c84b797 S |
1340 | |
1341 | ath9k_hw_detach(sc->sc_ah); | |
826d2680 | 1342 | ath9k_exit_debug(sc); |
3cbb5dd7 | 1343 | ath9k_ps_restore(sc); |
f078f209 LR |
1344 | } |
1345 | ||
ff37e337 S |
1346 | static int ath_init(u16 devid, struct ath_softc *sc) |
1347 | { | |
cbe61d8a | 1348 | struct ath_hw *ah = NULL; |
ff37e337 S |
1349 | int status; |
1350 | int error = 0, i; | |
1351 | int csz = 0; | |
1352 | ||
1353 | /* XXX: hardware will not be ready until ath_open() being called */ | |
1354 | sc->sc_flags |= SC_OP_INVALID; | |
88b126af | 1355 | |
826d2680 S |
1356 | if (ath9k_init_debug(sc) < 0) |
1357 | printk(KERN_ERR "Unable to create debugfs files\n"); | |
ff37e337 S |
1358 | |
1359 | spin_lock_init(&sc->sc_resetlock); | |
aa33de09 | 1360 | mutex_init(&sc->mutex); |
ff37e337 S |
1361 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); |
1362 | tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, | |
1363 | (unsigned long)sc); | |
1364 | ||
1365 | /* | |
1366 | * Cache line size is used to size and align various | |
1367 | * structures used to communicate with the hardware. | |
1368 | */ | |
88d15707 | 1369 | ath_read_cachesize(sc, &csz); |
ff37e337 | 1370 | /* XXX assert csz is non-zero */ |
17d7904d | 1371 | sc->cachelsz = csz << 2; /* convert to bytes */ |
ff37e337 | 1372 | |
cbe61d8a | 1373 | ah = ath9k_hw_attach(devid, sc, &status); |
ff37e337 S |
1374 | if (ah == NULL) { |
1375 | DPRINTF(sc, ATH_DBG_FATAL, | |
295834fe | 1376 | "Unable to attach hardware; HAL status %d\n", status); |
ff37e337 S |
1377 | error = -ENXIO; |
1378 | goto bad; | |
1379 | } | |
1380 | sc->sc_ah = ah; | |
1381 | ||
1382 | /* Get the hardware key cache size. */ | |
2660b81a | 1383 | sc->keymax = ah->caps.keycache_size; |
17d7904d | 1384 | if (sc->keymax > ATH_KEYMAX) { |
ff37e337 | 1385 | DPRINTF(sc, ATH_DBG_KEYCACHE, |
04bd4638 | 1386 | "Warning, using only %u entries in %u key cache\n", |
17d7904d S |
1387 | ATH_KEYMAX, sc->keymax); |
1388 | sc->keymax = ATH_KEYMAX; | |
ff37e337 S |
1389 | } |
1390 | ||
1391 | /* | |
1392 | * Reset the key cache since some parts do not | |
1393 | * reset the contents on initial power up. | |
1394 | */ | |
17d7904d | 1395 | for (i = 0; i < sc->keymax; i++) |
ff37e337 | 1396 | ath9k_hw_keyreset(ah, (u16) i); |
ff37e337 | 1397 | |
5f8e077c | 1398 | if (ath9k_regd_init(sc->sc_ah)) |
ff37e337 S |
1399 | goto bad; |
1400 | ||
1401 | /* default to MONITOR mode */ | |
2660b81a | 1402 | sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR; |
d97809db | 1403 | |
ff37e337 S |
1404 | /* Setup rate tables */ |
1405 | ||
1406 | ath_rate_attach(sc); | |
1407 | ath_setup_rates(sc, IEEE80211_BAND_2GHZ); | |
1408 | ath_setup_rates(sc, IEEE80211_BAND_5GHZ); | |
1409 | ||
1410 | /* | |
1411 | * Allocate hardware transmit queues: one queue for | |
1412 | * beacon frames and one data queue for each QoS | |
1413 | * priority. Note that the hal handles reseting | |
1414 | * these queues at the needed time. | |
1415 | */ | |
b77f483f S |
1416 | sc->beacon.beaconq = ath_beaconq_setup(ah); |
1417 | if (sc->beacon.beaconq == -1) { | |
ff37e337 | 1418 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1419 | "Unable to setup a beacon xmit queue\n"); |
ff37e337 S |
1420 | error = -EIO; |
1421 | goto bad2; | |
1422 | } | |
b77f483f S |
1423 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
1424 | if (sc->beacon.cabq == NULL) { | |
ff37e337 | 1425 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1426 | "Unable to setup CAB xmit queue\n"); |
ff37e337 S |
1427 | error = -EIO; |
1428 | goto bad2; | |
1429 | } | |
1430 | ||
17d7904d | 1431 | sc->config.cabqReadytime = ATH_CABQ_READY_TIME; |
ff37e337 S |
1432 | ath_cabq_update(sc); |
1433 | ||
b77f483f S |
1434 | for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++) |
1435 | sc->tx.hwq_map[i] = -1; | |
ff37e337 S |
1436 | |
1437 | /* Setup data queues */ | |
1438 | /* NB: ensure BK queue is the lowest priority h/w queue */ | |
1439 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) { | |
1440 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1441 | "Unable to setup xmit queue for BK traffic\n"); |
ff37e337 S |
1442 | error = -EIO; |
1443 | goto bad2; | |
1444 | } | |
1445 | ||
1446 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) { | |
1447 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1448 | "Unable to setup xmit queue for BE traffic\n"); |
ff37e337 S |
1449 | error = -EIO; |
1450 | goto bad2; | |
1451 | } | |
1452 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) { | |
1453 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1454 | "Unable to setup xmit queue for VI traffic\n"); |
ff37e337 S |
1455 | error = -EIO; |
1456 | goto bad2; | |
1457 | } | |
1458 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) { | |
1459 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1460 | "Unable to setup xmit queue for VO traffic\n"); |
ff37e337 S |
1461 | error = -EIO; |
1462 | goto bad2; | |
1463 | } | |
1464 | ||
1465 | /* Initializes the noise floor to a reasonable default value. | |
1466 | * Later on this will be updated during ANI processing. */ | |
1467 | ||
17d7904d S |
1468 | sc->ani.noise_floor = ATH_DEFAULT_NOISE_FLOOR; |
1469 | setup_timer(&sc->ani.timer, ath_ani_calibrate, (unsigned long)sc); | |
ff37e337 S |
1470 | |
1471 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1472 | ATH9K_CIPHER_TKIP, NULL)) { | |
1473 | /* | |
1474 | * Whether we should enable h/w TKIP MIC. | |
1475 | * XXX: if we don't support WME TKIP MIC, then we wouldn't | |
1476 | * report WMM capable, so it's always safe to turn on | |
1477 | * TKIP MIC in this case. | |
1478 | */ | |
1479 | ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC, | |
1480 | 0, 1, NULL); | |
1481 | } | |
1482 | ||
1483 | /* | |
1484 | * Check whether the separate key cache entries | |
1485 | * are required to handle both tx+rx MIC keys. | |
1486 | * With split mic keys the number of stations is limited | |
1487 | * to 27 otherwise 59. | |
1488 | */ | |
1489 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1490 | ATH9K_CIPHER_TKIP, NULL) | |
1491 | && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1492 | ATH9K_CIPHER_MIC, NULL) | |
1493 | && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT, | |
1494 | 0, NULL)) | |
17d7904d | 1495 | sc->splitmic = 1; |
ff37e337 S |
1496 | |
1497 | /* turn on mcast key search if possible */ | |
1498 | if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL)) | |
1499 | (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1, | |
1500 | 1, NULL); | |
1501 | ||
17d7904d | 1502 | sc->config.txpowlimit = ATH_TXPOWER_MAX; |
ff37e337 S |
1503 | |
1504 | /* 11n Capabilities */ | |
2660b81a | 1505 | if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) { |
ff37e337 S |
1506 | sc->sc_flags |= SC_OP_TXAGGR; |
1507 | sc->sc_flags |= SC_OP_RXAGGR; | |
1508 | } | |
1509 | ||
2660b81a S |
1510 | sc->tx_chainmask = ah->caps.tx_chainmask; |
1511 | sc->rx_chainmask = ah->caps.rx_chainmask; | |
ff37e337 S |
1512 | |
1513 | ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL); | |
b77f483f | 1514 | sc->rx.defant = ath9k_hw_getdefantenna(ah); |
ff37e337 | 1515 | |
2660b81a | 1516 | if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) { |
ba52da58 | 1517 | memcpy(sc->bssidmask, ath_bcast_mac, ETH_ALEN); |
17d7904d | 1518 | ATH_SET_VIF_BSSID_MASK(sc->bssidmask); |
ba52da58 | 1519 | ath9k_hw_setbssidmask(sc); |
ff37e337 S |
1520 | } |
1521 | ||
b77f483f | 1522 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */ |
ff37e337 S |
1523 | |
1524 | /* initialize beacon slots */ | |
b77f483f S |
1525 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) |
1526 | sc->beacon.bslot[i] = ATH_IF_ID_ANY; | |
ff37e337 S |
1527 | |
1528 | /* save MISC configurations */ | |
17d7904d | 1529 | sc->config.swBeaconProcess = 1; |
ff37e337 | 1530 | |
ff37e337 S |
1531 | /* setup channels and rates */ |
1532 | ||
5f8e077c | 1533 | sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable; |
ff37e337 S |
1534 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = |
1535 | sc->rates[IEEE80211_BAND_2GHZ]; | |
1536 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; | |
5f8e077c LR |
1537 | sc->sbands[IEEE80211_BAND_2GHZ].n_channels = |
1538 | ARRAY_SIZE(ath9k_2ghz_chantable); | |
ff37e337 | 1539 | |
2660b81a | 1540 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) { |
5f8e077c | 1541 | sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable; |
ff37e337 S |
1542 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = |
1543 | sc->rates[IEEE80211_BAND_5GHZ]; | |
1544 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; | |
5f8e077c LR |
1545 | sc->sbands[IEEE80211_BAND_5GHZ].n_channels = |
1546 | ARRAY_SIZE(ath9k_5ghz_chantable); | |
ff37e337 S |
1547 | } |
1548 | ||
2660b81a | 1549 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BT_COEX) |
c97c92d9 VT |
1550 | ath9k_hw_btcoex_enable(sc->sc_ah); |
1551 | ||
ff37e337 S |
1552 | return 0; |
1553 | bad2: | |
1554 | /* cleanup tx queues */ | |
1555 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1556 | if (ATH_TXQ_SETUP(sc, i)) | |
b77f483f | 1557 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
ff37e337 S |
1558 | bad: |
1559 | if (ah) | |
1560 | ath9k_hw_detach(ah); | |
40b130a9 | 1561 | ath9k_exit_debug(sc); |
ff37e337 S |
1562 | |
1563 | return error; | |
1564 | } | |
1565 | ||
6baff7f9 | 1566 | int ath_attach(u16 devid, struct ath_softc *sc) |
f078f209 | 1567 | { |
8feceb67 | 1568 | struct ieee80211_hw *hw = sc->hw; |
40b130a9 | 1569 | int error = 0, i; |
f078f209 | 1570 | |
04bd4638 | 1571 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n"); |
f078f209 | 1572 | |
8feceb67 VT |
1573 | error = ath_init(devid, sc); |
1574 | if (error != 0) | |
1575 | return error; | |
f078f209 | 1576 | |
8feceb67 | 1577 | /* get mac address from hardware and set in mac80211 */ |
f078f209 | 1578 | |
ba52da58 | 1579 | SET_IEEE80211_PERM_ADDR(hw, sc->sc_ah->macaddr); |
f078f209 | 1580 | |
9c84b797 S |
1581 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
1582 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
1583 | IEEE80211_HW_SIGNAL_DBM | | |
3cbb5dd7 VN |
1584 | IEEE80211_HW_AMPDU_AGGREGATION | |
1585 | IEEE80211_HW_SUPPORTS_PS | | |
1586 | IEEE80211_HW_PS_NULLFUNC_STACK; | |
f078f209 | 1587 | |
0ced0e17 JM |
1588 | if (AR_SREV_9160_10_OR_LATER(sc->sc_ah)) |
1589 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; | |
1590 | ||
9c84b797 S |
1591 | hw->wiphy->interface_modes = |
1592 | BIT(NL80211_IFTYPE_AP) | | |
1593 | BIT(NL80211_IFTYPE_STATION) | | |
1594 | BIT(NL80211_IFTYPE_ADHOC); | |
f078f209 | 1595 | |
5f8e077c LR |
1596 | hw->wiphy->reg_notifier = ath9k_reg_notifier; |
1597 | hw->wiphy->strict_regulatory = true; | |
1598 | ||
8feceb67 | 1599 | hw->queues = 4; |
e63835b0 S |
1600 | hw->max_rates = 4; |
1601 | hw->max_rate_tries = ATH_11N_TXMAXTRY; | |
528f0c6b | 1602 | hw->sta_data_size = sizeof(struct ath_node); |
17d7904d | 1603 | hw->vif_data_size = sizeof(struct ath_vif); |
f078f209 | 1604 | |
8feceb67 | 1605 | hw->rate_control_algorithm = "ath9k_rate_control"; |
f078f209 | 1606 | |
2660b81a | 1607 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { |
eb2599ca | 1608 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); |
2660b81a | 1609 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) |
eb2599ca | 1610 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); |
9c84b797 S |
1611 | } |
1612 | ||
1613 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ]; | |
2660b81a | 1614 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) |
9c84b797 S |
1615 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
1616 | &sc->sbands[IEEE80211_BAND_5GHZ]; | |
1617 | ||
db93e7b5 SB |
1618 | /* initialize tx/rx engine */ |
1619 | error = ath_tx_init(sc, ATH_TXBUF); | |
1620 | if (error != 0) | |
40b130a9 | 1621 | goto error_attach; |
8feceb67 | 1622 | |
db93e7b5 SB |
1623 | error = ath_rx_init(sc, ATH_RXBUF); |
1624 | if (error != 0) | |
40b130a9 | 1625 | goto error_attach; |
8feceb67 | 1626 | |
e97275cb | 1627 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d | 1628 | /* Initialze h/w Rfkill */ |
2660b81a | 1629 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
500c064d VT |
1630 | INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); |
1631 | ||
1632 | /* Initialize s/w rfkill */ | |
40b130a9 VT |
1633 | error = ath_init_sw_rfkill(sc); |
1634 | if (error) | |
1635 | goto error_attach; | |
500c064d VT |
1636 | #endif |
1637 | ||
5f8e077c LR |
1638 | if (ath9k_is_world_regd(sc->sc_ah)) { |
1639 | /* Anything applied here (prior to wiphy registratoin) gets | |
1640 | * saved on the wiphy orig_* parameters */ | |
1641 | const struct ieee80211_regdomain *regd = | |
1642 | ath9k_world_regdomain(sc->sc_ah); | |
1643 | hw->wiphy->custom_regulatory = true; | |
1644 | hw->wiphy->strict_regulatory = false; | |
1645 | wiphy_apply_custom_regulatory(sc->hw->wiphy, regd); | |
1646 | ath9k_reg_apply_radar_flags(hw->wiphy); | |
1647 | ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT); | |
1648 | } else { | |
1649 | /* This gets applied in the case of the absense of CRDA, | |
1650 | * its our own custom world regulatory domain, similar to | |
1651 | * cfg80211's but we enable passive scanning */ | |
1652 | const struct ieee80211_regdomain *regd = | |
1653 | ath9k_default_world_regdomain(); | |
1654 | wiphy_apply_custom_regulatory(sc->hw->wiphy, regd); | |
1655 | ath9k_reg_apply_radar_flags(hw->wiphy); | |
1656 | ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT); | |
1657 | } | |
1658 | ||
db93e7b5 | 1659 | error = ieee80211_register_hw(hw); |
8feceb67 | 1660 | |
5f8e077c | 1661 | if (!ath9k_is_world_regd(sc->sc_ah)) |
d6bad496 | 1662 | regulatory_hint(hw->wiphy, sc->sc_ah->regulatory.alpha2); |
5f8e077c | 1663 | |
db93e7b5 SB |
1664 | /* Initialize LED control */ |
1665 | ath_init_leds(sc); | |
8feceb67 | 1666 | |
5f8e077c | 1667 | |
8feceb67 | 1668 | return 0; |
40b130a9 VT |
1669 | |
1670 | error_attach: | |
1671 | /* cleanup tx queues */ | |
1672 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1673 | if (ATH_TXQ_SETUP(sc, i)) | |
1674 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
1675 | ||
1676 | ath9k_hw_detach(sc->sc_ah); | |
1677 | ath9k_exit_debug(sc); | |
1678 | ||
8feceb67 | 1679 | return error; |
f078f209 LR |
1680 | } |
1681 | ||
ff37e337 S |
1682 | int ath_reset(struct ath_softc *sc, bool retry_tx) |
1683 | { | |
cbe61d8a | 1684 | struct ath_hw *ah = sc->sc_ah; |
030bb495 | 1685 | struct ieee80211_hw *hw = sc->hw; |
ae8d2858 | 1686 | int r; |
ff37e337 S |
1687 | |
1688 | ath9k_hw_set_interrupts(ah, 0); | |
043a0405 | 1689 | ath_drain_all_txq(sc, retry_tx); |
ff37e337 S |
1690 | ath_stoprecv(sc); |
1691 | ath_flushrecv(sc); | |
1692 | ||
1693 | spin_lock_bh(&sc->sc_resetlock); | |
2660b81a | 1694 | r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false); |
ae8d2858 | 1695 | if (r) |
ff37e337 | 1696 | DPRINTF(sc, ATH_DBG_FATAL, |
ae8d2858 | 1697 | "Unable to reset hardware; reset status %u\n", r); |
ff37e337 S |
1698 | spin_unlock_bh(&sc->sc_resetlock); |
1699 | ||
1700 | if (ath_startrecv(sc) != 0) | |
04bd4638 | 1701 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n"); |
ff37e337 S |
1702 | |
1703 | /* | |
1704 | * We may be doing a reset in response to a request | |
1705 | * that changes the channel so update any state that | |
1706 | * might change as a result. | |
1707 | */ | |
ce111bad | 1708 | ath_cache_conf_rate(sc, &hw->conf); |
ff37e337 S |
1709 | |
1710 | ath_update_txpow(sc); | |
1711 | ||
1712 | if (sc->sc_flags & SC_OP_BEACONS) | |
1713 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ | |
1714 | ||
17d7904d | 1715 | ath9k_hw_set_interrupts(ah, sc->imask); |
ff37e337 S |
1716 | |
1717 | if (retry_tx) { | |
1718 | int i; | |
1719 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { | |
1720 | if (ATH_TXQ_SETUP(sc, i)) { | |
b77f483f S |
1721 | spin_lock_bh(&sc->tx.txq[i].axq_lock); |
1722 | ath_txq_schedule(sc, &sc->tx.txq[i]); | |
1723 | spin_unlock_bh(&sc->tx.txq[i].axq_lock); | |
ff37e337 S |
1724 | } |
1725 | } | |
1726 | } | |
1727 | ||
ae8d2858 | 1728 | return r; |
ff37e337 S |
1729 | } |
1730 | ||
1731 | /* | |
1732 | * This function will allocate both the DMA descriptor structure, and the | |
1733 | * buffers it contains. These are used to contain the descriptors used | |
1734 | * by the system. | |
1735 | */ | |
1736 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, | |
1737 | struct list_head *head, const char *name, | |
1738 | int nbuf, int ndesc) | |
1739 | { | |
1740 | #define DS2PHYS(_dd, _ds) \ | |
1741 | ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) | |
1742 | #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) | |
1743 | #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) | |
1744 | ||
1745 | struct ath_desc *ds; | |
1746 | struct ath_buf *bf; | |
1747 | int i, bsize, error; | |
1748 | ||
04bd4638 S |
1749 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", |
1750 | name, nbuf, ndesc); | |
ff37e337 S |
1751 | |
1752 | /* ath_desc must be a multiple of DWORDs */ | |
1753 | if ((sizeof(struct ath_desc) % 4) != 0) { | |
04bd4638 | 1754 | DPRINTF(sc, ATH_DBG_FATAL, "ath_desc not DWORD aligned\n"); |
ff37e337 S |
1755 | ASSERT((sizeof(struct ath_desc) % 4) == 0); |
1756 | error = -ENOMEM; | |
1757 | goto fail; | |
1758 | } | |
1759 | ||
1760 | dd->dd_name = name; | |
1761 | dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc; | |
1762 | ||
1763 | /* | |
1764 | * Need additional DMA memory because we can't use | |
1765 | * descriptors that cross the 4K page boundary. Assume | |
1766 | * one skipped descriptor per 4K page. | |
1767 | */ | |
2660b81a | 1768 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { |
ff37e337 S |
1769 | u32 ndesc_skipped = |
1770 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); | |
1771 | u32 dma_len; | |
1772 | ||
1773 | while (ndesc_skipped) { | |
1774 | dma_len = ndesc_skipped * sizeof(struct ath_desc); | |
1775 | dd->dd_desc_len += dma_len; | |
1776 | ||
1777 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); | |
1778 | }; | |
1779 | } | |
1780 | ||
1781 | /* allocate descriptors */ | |
7da3c55c GJ |
1782 | dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, |
1783 | &dd->dd_desc_paddr, GFP_ATOMIC); | |
ff37e337 S |
1784 | if (dd->dd_desc == NULL) { |
1785 | error = -ENOMEM; | |
1786 | goto fail; | |
1787 | } | |
1788 | ds = dd->dd_desc; | |
04bd4638 S |
1789 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
1790 | dd->dd_name, ds, (u32) dd->dd_desc_len, | |
ff37e337 S |
1791 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); |
1792 | ||
1793 | /* allocate buffers */ | |
1794 | bsize = sizeof(struct ath_buf) * nbuf; | |
1795 | bf = kmalloc(bsize, GFP_KERNEL); | |
1796 | if (bf == NULL) { | |
1797 | error = -ENOMEM; | |
1798 | goto fail2; | |
1799 | } | |
1800 | memset(bf, 0, bsize); | |
1801 | dd->dd_bufptr = bf; | |
1802 | ||
1803 | INIT_LIST_HEAD(head); | |
1804 | for (i = 0; i < nbuf; i++, bf++, ds += ndesc) { | |
1805 | bf->bf_desc = ds; | |
1806 | bf->bf_daddr = DS2PHYS(dd, ds); | |
1807 | ||
2660b81a | 1808 | if (!(sc->sc_ah->caps.hw_caps & |
ff37e337 S |
1809 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { |
1810 | /* | |
1811 | * Skip descriptor addresses which can cause 4KB | |
1812 | * boundary crossing (addr + length) with a 32 dword | |
1813 | * descriptor fetch. | |
1814 | */ | |
1815 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { | |
1816 | ASSERT((caddr_t) bf->bf_desc < | |
1817 | ((caddr_t) dd->dd_desc + | |
1818 | dd->dd_desc_len)); | |
1819 | ||
1820 | ds += ndesc; | |
1821 | bf->bf_desc = ds; | |
1822 | bf->bf_daddr = DS2PHYS(dd, ds); | |
1823 | } | |
1824 | } | |
1825 | list_add_tail(&bf->list, head); | |
1826 | } | |
1827 | return 0; | |
1828 | fail2: | |
7da3c55c GJ |
1829 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, |
1830 | dd->dd_desc_paddr); | |
ff37e337 S |
1831 | fail: |
1832 | memset(dd, 0, sizeof(*dd)); | |
1833 | return error; | |
1834 | #undef ATH_DESC_4KB_BOUND_CHECK | |
1835 | #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED | |
1836 | #undef DS2PHYS | |
1837 | } | |
1838 | ||
1839 | void ath_descdma_cleanup(struct ath_softc *sc, | |
1840 | struct ath_descdma *dd, | |
1841 | struct list_head *head) | |
1842 | { | |
7da3c55c GJ |
1843 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, |
1844 | dd->dd_desc_paddr); | |
ff37e337 S |
1845 | |
1846 | INIT_LIST_HEAD(head); | |
1847 | kfree(dd->dd_bufptr); | |
1848 | memset(dd, 0, sizeof(*dd)); | |
1849 | } | |
1850 | ||
1851 | int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) | |
1852 | { | |
1853 | int qnum; | |
1854 | ||
1855 | switch (queue) { | |
1856 | case 0: | |
b77f483f | 1857 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO]; |
ff37e337 S |
1858 | break; |
1859 | case 1: | |
b77f483f | 1860 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI]; |
ff37e337 S |
1861 | break; |
1862 | case 2: | |
b77f483f | 1863 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1864 | break; |
1865 | case 3: | |
b77f483f | 1866 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK]; |
ff37e337 S |
1867 | break; |
1868 | default: | |
b77f483f | 1869 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1870 | break; |
1871 | } | |
1872 | ||
1873 | return qnum; | |
1874 | } | |
1875 | ||
1876 | int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) | |
1877 | { | |
1878 | int qnum; | |
1879 | ||
1880 | switch (queue) { | |
1881 | case ATH9K_WME_AC_VO: | |
1882 | qnum = 0; | |
1883 | break; | |
1884 | case ATH9K_WME_AC_VI: | |
1885 | qnum = 1; | |
1886 | break; | |
1887 | case ATH9K_WME_AC_BE: | |
1888 | qnum = 2; | |
1889 | break; | |
1890 | case ATH9K_WME_AC_BK: | |
1891 | qnum = 3; | |
1892 | break; | |
1893 | default: | |
1894 | qnum = -1; | |
1895 | break; | |
1896 | } | |
1897 | ||
1898 | return qnum; | |
1899 | } | |
1900 | ||
5f8e077c LR |
1901 | /* XXX: Remove me once we don't depend on ath9k_channel for all |
1902 | * this redundant data */ | |
1903 | static void ath9k_update_ichannel(struct ath_softc *sc, | |
1904 | struct ath9k_channel *ichan) | |
1905 | { | |
1906 | struct ieee80211_hw *hw = sc->hw; | |
1907 | struct ieee80211_channel *chan = hw->conf.channel; | |
1908 | struct ieee80211_conf *conf = &hw->conf; | |
1909 | ||
1910 | ichan->channel = chan->center_freq; | |
1911 | ichan->chan = chan; | |
1912 | ||
1913 | if (chan->band == IEEE80211_BAND_2GHZ) { | |
1914 | ichan->chanmode = CHANNEL_G; | |
1915 | ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM; | |
1916 | } else { | |
1917 | ichan->chanmode = CHANNEL_A; | |
1918 | ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM; | |
1919 | } | |
1920 | ||
1921 | sc->tx_chan_width = ATH9K_HT_MACMODE_20; | |
1922 | ||
1923 | if (conf_is_ht(conf)) { | |
1924 | if (conf_is_ht40(conf)) | |
1925 | sc->tx_chan_width = ATH9K_HT_MACMODE_2040; | |
1926 | ||
1927 | ichan->chanmode = ath_get_extchanmode(sc, chan, | |
1928 | conf->channel_type); | |
1929 | } | |
1930 | } | |
1931 | ||
ff37e337 S |
1932 | /**********************/ |
1933 | /* mac80211 callbacks */ | |
1934 | /**********************/ | |
1935 | ||
8feceb67 | 1936 | static int ath9k_start(struct ieee80211_hw *hw) |
f078f209 LR |
1937 | { |
1938 | struct ath_softc *sc = hw->priv; | |
8feceb67 | 1939 | struct ieee80211_channel *curchan = hw->conf.channel; |
ff37e337 | 1940 | struct ath9k_channel *init_channel; |
ae8d2858 | 1941 | int r, pos; |
f078f209 | 1942 | |
04bd4638 S |
1943 | DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with " |
1944 | "initial channel: %d MHz\n", curchan->center_freq); | |
f078f209 | 1945 | |
141b38b6 S |
1946 | mutex_lock(&sc->mutex); |
1947 | ||
8feceb67 | 1948 | /* setup initial channel */ |
f078f209 | 1949 | |
5f8e077c | 1950 | pos = curchan->hw_value; |
f078f209 | 1951 | |
2660b81a | 1952 | init_channel = &sc->sc_ah->channels[pos]; |
5f8e077c | 1953 | ath9k_update_ichannel(sc, init_channel); |
ff37e337 S |
1954 | |
1955 | /* Reset SERDES registers */ | |
1956 | ath9k_hw_configpcipowersave(sc->sc_ah, 0); | |
1957 | ||
1958 | /* | |
1959 | * The basic interface to setting the hardware in a good | |
1960 | * state is ``reset''. On return the hardware is known to | |
1961 | * be powered up and with interrupts disabled. This must | |
1962 | * be followed by initialization of the appropriate bits | |
1963 | * and then setup of the interrupt mask. | |
1964 | */ | |
1965 | spin_lock_bh(&sc->sc_resetlock); | |
ae8d2858 LR |
1966 | r = ath9k_hw_reset(sc->sc_ah, init_channel, false); |
1967 | if (r) { | |
ff37e337 | 1968 | DPRINTF(sc, ATH_DBG_FATAL, |
ae8d2858 LR |
1969 | "Unable to reset hardware; reset status %u " |
1970 | "(freq %u MHz)\n", r, | |
1971 | curchan->center_freq); | |
ff37e337 | 1972 | spin_unlock_bh(&sc->sc_resetlock); |
141b38b6 | 1973 | goto mutex_unlock; |
ff37e337 S |
1974 | } |
1975 | spin_unlock_bh(&sc->sc_resetlock); | |
1976 | ||
1977 | /* | |
1978 | * This is needed only to setup initial state | |
1979 | * but it's best done after a reset. | |
1980 | */ | |
1981 | ath_update_txpow(sc); | |
8feceb67 | 1982 | |
ff37e337 S |
1983 | /* |
1984 | * Setup the hardware after reset: | |
1985 | * The receive engine is set going. | |
1986 | * Frame transmit is handled entirely | |
1987 | * in the frame output path; there's nothing to do | |
1988 | * here except setup the interrupt mask. | |
1989 | */ | |
1990 | if (ath_startrecv(sc) != 0) { | |
8feceb67 | 1991 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1992 | "Unable to start recv logic\n"); |
141b38b6 S |
1993 | r = -EIO; |
1994 | goto mutex_unlock; | |
f078f209 | 1995 | } |
8feceb67 | 1996 | |
ff37e337 | 1997 | /* Setup our intr mask. */ |
17d7904d | 1998 | sc->imask = ATH9K_INT_RX | ATH9K_INT_TX |
ff37e337 S |
1999 | | ATH9K_INT_RXEOL | ATH9K_INT_RXORN |
2000 | | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL; | |
2001 | ||
2660b81a | 2002 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_GTT) |
17d7904d | 2003 | sc->imask |= ATH9K_INT_GTT; |
ff37e337 | 2004 | |
2660b81a | 2005 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
17d7904d | 2006 | sc->imask |= ATH9K_INT_CST; |
ff37e337 | 2007 | |
ce111bad | 2008 | ath_cache_conf_rate(sc, &hw->conf); |
ff37e337 S |
2009 | |
2010 | sc->sc_flags &= ~SC_OP_INVALID; | |
2011 | ||
2012 | /* Disable BMISS interrupt when we're not associated */ | |
17d7904d S |
2013 | sc->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
2014 | ath9k_hw_set_interrupts(sc->sc_ah, sc->imask); | |
ff37e337 S |
2015 | |
2016 | ieee80211_wake_queues(sc->hw); | |
2017 | ||
e97275cb | 2018 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
ae8d2858 | 2019 | r = ath_start_rfkill_poll(sc); |
500c064d | 2020 | #endif |
141b38b6 S |
2021 | |
2022 | mutex_unlock: | |
2023 | mutex_unlock(&sc->mutex); | |
2024 | ||
ae8d2858 | 2025 | return r; |
f078f209 LR |
2026 | } |
2027 | ||
8feceb67 VT |
2028 | static int ath9k_tx(struct ieee80211_hw *hw, |
2029 | struct sk_buff *skb) | |
f078f209 | 2030 | { |
528f0c6b | 2031 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f078f209 | 2032 | struct ath_softc *sc = hw->priv; |
528f0c6b | 2033 | struct ath_tx_control txctl; |
8feceb67 | 2034 | int hdrlen, padsize; |
528f0c6b S |
2035 | |
2036 | memset(&txctl, 0, sizeof(struct ath_tx_control)); | |
f078f209 | 2037 | |
8feceb67 VT |
2038 | /* |
2039 | * As a temporary workaround, assign seq# here; this will likely need | |
2040 | * to be cleaned up to work better with Beacon transmission and virtual | |
2041 | * BSSes. | |
2042 | */ | |
2043 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
2044 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
2045 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) | |
b77f483f | 2046 | sc->tx.seq_no += 0x10; |
8feceb67 | 2047 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
b77f483f | 2048 | hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); |
8feceb67 | 2049 | } |
f078f209 | 2050 | |
8feceb67 VT |
2051 | /* Add the padding after the header if this is not already done */ |
2052 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
2053 | if (hdrlen & 3) { | |
2054 | padsize = hdrlen % 4; | |
2055 | if (skb_headroom(skb) < padsize) | |
2056 | return -1; | |
2057 | skb_push(skb, padsize); | |
2058 | memmove(skb->data, skb->data + padsize, hdrlen); | |
2059 | } | |
2060 | ||
528f0c6b S |
2061 | /* Check if a tx queue is available */ |
2062 | ||
2063 | txctl.txq = ath_test_get_txq(sc, skb); | |
2064 | if (!txctl.txq) | |
2065 | goto exit; | |
2066 | ||
04bd4638 | 2067 | DPRINTF(sc, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb); |
8feceb67 | 2068 | |
528f0c6b | 2069 | if (ath_tx_start(sc, skb, &txctl) != 0) { |
04bd4638 | 2070 | DPRINTF(sc, ATH_DBG_XMIT, "TX failed\n"); |
528f0c6b | 2071 | goto exit; |
8feceb67 VT |
2072 | } |
2073 | ||
528f0c6b S |
2074 | return 0; |
2075 | exit: | |
2076 | dev_kfree_skb_any(skb); | |
8feceb67 | 2077 | return 0; |
f078f209 LR |
2078 | } |
2079 | ||
8feceb67 | 2080 | static void ath9k_stop(struct ieee80211_hw *hw) |
f078f209 LR |
2081 | { |
2082 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2083 | |
9c84b797 | 2084 | if (sc->sc_flags & SC_OP_INVALID) { |
04bd4638 | 2085 | DPRINTF(sc, ATH_DBG_ANY, "Device not present\n"); |
9c84b797 S |
2086 | return; |
2087 | } | |
8feceb67 | 2088 | |
141b38b6 | 2089 | mutex_lock(&sc->mutex); |
ff37e337 S |
2090 | |
2091 | ieee80211_stop_queues(sc->hw); | |
2092 | ||
2093 | /* make sure h/w will not generate any interrupt | |
2094 | * before setting the invalid flag. */ | |
2095 | ath9k_hw_set_interrupts(sc->sc_ah, 0); | |
2096 | ||
2097 | if (!(sc->sc_flags & SC_OP_INVALID)) { | |
043a0405 | 2098 | ath_drain_all_txq(sc, false); |
ff37e337 S |
2099 | ath_stoprecv(sc); |
2100 | ath9k_hw_phy_disable(sc->sc_ah); | |
2101 | } else | |
b77f483f | 2102 | sc->rx.rxlink = NULL; |
ff37e337 S |
2103 | |
2104 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) | |
2660b81a | 2105 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
ff37e337 S |
2106 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); |
2107 | #endif | |
2108 | /* disable HAL and put h/w to sleep */ | |
2109 | ath9k_hw_disable(sc->sc_ah); | |
2110 | ath9k_hw_configpcipowersave(sc->sc_ah, 1); | |
2111 | ||
2112 | sc->sc_flags |= SC_OP_INVALID; | |
500c064d | 2113 | |
141b38b6 S |
2114 | mutex_unlock(&sc->mutex); |
2115 | ||
04bd4638 | 2116 | DPRINTF(sc, ATH_DBG_CONFIG, "Driver halt\n"); |
f078f209 LR |
2117 | } |
2118 | ||
8feceb67 VT |
2119 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
2120 | struct ieee80211_if_init_conf *conf) | |
f078f209 LR |
2121 | { |
2122 | struct ath_softc *sc = hw->priv; | |
17d7904d | 2123 | struct ath_vif *avp = (void *)conf->vif->drv_priv; |
d97809db | 2124 | enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; |
f078f209 | 2125 | |
17d7904d | 2126 | /* Support only vif for now */ |
8feceb67 | 2127 | |
17d7904d | 2128 | if (sc->nvifs) |
8feceb67 VT |
2129 | return -ENOBUFS; |
2130 | ||
141b38b6 S |
2131 | mutex_lock(&sc->mutex); |
2132 | ||
8feceb67 | 2133 | switch (conf->type) { |
05c914fe | 2134 | case NL80211_IFTYPE_STATION: |
d97809db | 2135 | ic_opmode = NL80211_IFTYPE_STATION; |
f078f209 | 2136 | break; |
05c914fe | 2137 | case NL80211_IFTYPE_ADHOC: |
d97809db | 2138 | ic_opmode = NL80211_IFTYPE_ADHOC; |
f078f209 | 2139 | break; |
05c914fe | 2140 | case NL80211_IFTYPE_AP: |
d97809db | 2141 | ic_opmode = NL80211_IFTYPE_AP; |
f078f209 LR |
2142 | break; |
2143 | default: | |
2144 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2145 | "Interface type %d not yet supported\n", conf->type); |
8feceb67 | 2146 | return -EOPNOTSUPP; |
f078f209 LR |
2147 | } |
2148 | ||
17d7904d | 2149 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VIF of type: %d\n", ic_opmode); |
8feceb67 | 2150 | |
17d7904d | 2151 | /* Set the VIF opmode */ |
5640b08e S |
2152 | avp->av_opmode = ic_opmode; |
2153 | avp->av_bslot = -1; | |
2154 | ||
d97809db | 2155 | if (ic_opmode == NL80211_IFTYPE_AP) |
5640b08e S |
2156 | ath9k_hw_set_tsfadjust(sc->sc_ah, 1); |
2157 | ||
17d7904d S |
2158 | sc->vifs[0] = conf->vif; |
2159 | sc->nvifs++; | |
5640b08e S |
2160 | |
2161 | /* Set the device opmode */ | |
2660b81a | 2162 | sc->sc_ah->opmode = ic_opmode; |
5640b08e | 2163 | |
4e30ffa2 VN |
2164 | /* |
2165 | * Enable MIB interrupts when there are hardware phy counters. | |
2166 | * Note we only do this (at the moment) for station mode. | |
2167 | */ | |
2168 | if (ath9k_hw_phycounters(sc->sc_ah) && | |
2169 | ((conf->type == NL80211_IFTYPE_STATION) || | |
2170 | (conf->type == NL80211_IFTYPE_ADHOC))) | |
17d7904d | 2171 | sc->imask |= ATH9K_INT_MIB; |
4e30ffa2 VN |
2172 | /* |
2173 | * Some hardware processes the TIM IE and fires an | |
2174 | * interrupt when the TIM bit is set. For hardware | |
2175 | * that does, if not overridden by configuration, | |
2176 | * enable the TIM interrupt when operating as station. | |
2177 | */ | |
2660b81a | 2178 | if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) && |
4e30ffa2 | 2179 | (conf->type == NL80211_IFTYPE_STATION) && |
17d7904d S |
2180 | !sc->config.swBeaconProcess) |
2181 | sc->imask |= ATH9K_INT_TIM; | |
4e30ffa2 | 2182 | |
17d7904d | 2183 | ath9k_hw_set_interrupts(sc->sc_ah, sc->imask); |
4e30ffa2 | 2184 | |
6f255425 LR |
2185 | if (conf->type == NL80211_IFTYPE_AP) { |
2186 | /* TODO: is this a suitable place to start ANI for AP mode? */ | |
2187 | /* Start ANI */ | |
17d7904d | 2188 | mod_timer(&sc->ani.timer, |
6f255425 LR |
2189 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); |
2190 | } | |
2191 | ||
141b38b6 S |
2192 | mutex_unlock(&sc->mutex); |
2193 | ||
8feceb67 | 2194 | return 0; |
f078f209 LR |
2195 | } |
2196 | ||
8feceb67 VT |
2197 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
2198 | struct ieee80211_if_init_conf *conf) | |
f078f209 | 2199 | { |
8feceb67 | 2200 | struct ath_softc *sc = hw->priv; |
17d7904d | 2201 | struct ath_vif *avp = (void *)conf->vif->drv_priv; |
f078f209 | 2202 | |
04bd4638 | 2203 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n"); |
f078f209 | 2204 | |
141b38b6 S |
2205 | mutex_lock(&sc->mutex); |
2206 | ||
6f255425 | 2207 | /* Stop ANI */ |
17d7904d | 2208 | del_timer_sync(&sc->ani.timer); |
580f0b8a | 2209 | |
8feceb67 | 2210 | /* Reclaim beacon resources */ |
2660b81a S |
2211 | if (sc->sc_ah->opmode == NL80211_IFTYPE_AP || |
2212 | sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) { | |
b77f483f | 2213 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
8feceb67 | 2214 | ath_beacon_return(sc, avp); |
580f0b8a | 2215 | } |
f078f209 | 2216 | |
8feceb67 | 2217 | sc->sc_flags &= ~SC_OP_BEACONS; |
f078f209 | 2218 | |
17d7904d S |
2219 | sc->vifs[0] = NULL; |
2220 | sc->nvifs--; | |
141b38b6 S |
2221 | |
2222 | mutex_unlock(&sc->mutex); | |
f078f209 LR |
2223 | } |
2224 | ||
e8975581 | 2225 | static int ath9k_config(struct ieee80211_hw *hw, u32 changed) |
f078f209 | 2226 | { |
8feceb67 | 2227 | struct ath_softc *sc = hw->priv; |
e8975581 | 2228 | struct ieee80211_conf *conf = &hw->conf; |
f078f209 | 2229 | |
aa33de09 | 2230 | mutex_lock(&sc->mutex); |
141b38b6 | 2231 | |
3cbb5dd7 VN |
2232 | if (changed & IEEE80211_CONF_CHANGE_PS) { |
2233 | if (conf->flags & IEEE80211_CONF_PS) { | |
17d7904d S |
2234 | if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) { |
2235 | sc->imask |= ATH9K_INT_TIM_TIMER; | |
3cbb5dd7 | 2236 | ath9k_hw_set_interrupts(sc->sc_ah, |
17d7904d | 2237 | sc->imask); |
3cbb5dd7 VN |
2238 | } |
2239 | ath9k_hw_setrxabort(sc->sc_ah, 1); | |
2240 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); | |
2241 | } else { | |
2242 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); | |
2243 | ath9k_hw_setrxabort(sc->sc_ah, 0); | |
2244 | sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON; | |
17d7904d S |
2245 | if (sc->imask & ATH9K_INT_TIM_TIMER) { |
2246 | sc->imask &= ~ATH9K_INT_TIM_TIMER; | |
3cbb5dd7 | 2247 | ath9k_hw_set_interrupts(sc->sc_ah, |
17d7904d | 2248 | sc->imask); |
3cbb5dd7 VN |
2249 | } |
2250 | } | |
2251 | } | |
2252 | ||
4797938c | 2253 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
99405f93 | 2254 | struct ieee80211_channel *curchan = hw->conf.channel; |
5f8e077c | 2255 | int pos = curchan->hw_value; |
ae5eb026 | 2256 | |
04bd4638 S |
2257 | DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n", |
2258 | curchan->center_freq); | |
f078f209 | 2259 | |
5f8e077c | 2260 | /* XXX: remove me eventualy */ |
2660b81a | 2261 | ath9k_update_ichannel(sc, &sc->sc_ah->channels[pos]); |
e11602b7 | 2262 | |
ecf70441 | 2263 | ath_update_chainmask(sc, conf_is_ht(conf)); |
86060f0d | 2264 | |
2660b81a | 2265 | if (ath_set_channel(sc, &sc->sc_ah->channels[pos]) < 0) { |
04bd4638 | 2266 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n"); |
aa33de09 | 2267 | mutex_unlock(&sc->mutex); |
e11602b7 S |
2268 | return -EINVAL; |
2269 | } | |
094d05dc | 2270 | } |
f078f209 | 2271 | |
5c020dc6 | 2272 | if (changed & IEEE80211_CONF_CHANGE_POWER) |
17d7904d | 2273 | sc->config.txpowlimit = 2 * conf->power_level; |
f078f209 | 2274 | |
aa33de09 | 2275 | mutex_unlock(&sc->mutex); |
141b38b6 | 2276 | |
f078f209 LR |
2277 | return 0; |
2278 | } | |
2279 | ||
8feceb67 VT |
2280 | static int ath9k_config_interface(struct ieee80211_hw *hw, |
2281 | struct ieee80211_vif *vif, | |
2282 | struct ieee80211_if_conf *conf) | |
c83be688 | 2283 | { |
8feceb67 | 2284 | struct ath_softc *sc = hw->priv; |
cbe61d8a | 2285 | struct ath_hw *ah = sc->sc_ah; |
17d7904d | 2286 | struct ath_vif *avp = (void *)vif->drv_priv; |
8feceb67 VT |
2287 | u32 rfilt = 0; |
2288 | int error, i; | |
c83be688 | 2289 | |
8feceb67 VT |
2290 | /* TODO: Need to decide which hw opmode to use for multi-interface |
2291 | * cases */ | |
05c914fe | 2292 | if (vif->type == NL80211_IFTYPE_AP && |
2660b81a S |
2293 | ah->opmode != NL80211_IFTYPE_AP) { |
2294 | ah->opmode = NL80211_IFTYPE_STATION; | |
8feceb67 | 2295 | ath9k_hw_setopmode(ah); |
ba52da58 S |
2296 | memcpy(sc->curbssid, sc->sc_ah->macaddr, ETH_ALEN); |
2297 | sc->curaid = 0; | |
2298 | ath9k_hw_write_associd(sc); | |
8feceb67 VT |
2299 | /* Request full reset to get hw opmode changed properly */ |
2300 | sc->sc_flags |= SC_OP_FULL_RESET; | |
2301 | } | |
c83be688 | 2302 | |
8feceb67 VT |
2303 | if ((conf->changed & IEEE80211_IFCC_BSSID) && |
2304 | !is_zero_ether_addr(conf->bssid)) { | |
2305 | switch (vif->type) { | |
05c914fe JB |
2306 | case NL80211_IFTYPE_STATION: |
2307 | case NL80211_IFTYPE_ADHOC: | |
8feceb67 | 2308 | /* Set BSSID */ |
17d7904d S |
2309 | memcpy(sc->curbssid, conf->bssid, ETH_ALEN); |
2310 | sc->curaid = 0; | |
ba52da58 | 2311 | ath9k_hw_write_associd(sc); |
c83be688 | 2312 | |
8feceb67 | 2313 | /* Set aggregation protection mode parameters */ |
17d7904d | 2314 | sc->config.ath_aggr_prot = 0; |
c83be688 | 2315 | |
8feceb67 | 2316 | DPRINTF(sc, ATH_DBG_CONFIG, |
04bd4638 | 2317 | "RX filter 0x%x bssid %pM aid 0x%x\n", |
17d7904d | 2318 | rfilt, sc->curbssid, sc->curaid); |
c83be688 | 2319 | |
8feceb67 VT |
2320 | /* need to reconfigure the beacon */ |
2321 | sc->sc_flags &= ~SC_OP_BEACONS ; | |
c83be688 | 2322 | |
8feceb67 VT |
2323 | break; |
2324 | default: | |
2325 | break; | |
2326 | } | |
2327 | } | |
c83be688 | 2328 | |
1f7d6cbf S |
2329 | if ((vif->type == NL80211_IFTYPE_ADHOC) || |
2330 | (vif->type == NL80211_IFTYPE_AP)) { | |
2331 | if ((conf->changed & IEEE80211_IFCC_BEACON) || | |
2332 | (conf->changed & IEEE80211_IFCC_BEACON_ENABLED && | |
2333 | conf->enable_beacon)) { | |
2334 | /* | |
2335 | * Allocate and setup the beacon frame. | |
2336 | * | |
2337 | * Stop any previous beacon DMA. This may be | |
2338 | * necessary, for example, when an ibss merge | |
2339 | * causes reconfiguration; we may be called | |
2340 | * with beacon transmission active. | |
2341 | */ | |
2342 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); | |
c83be688 | 2343 | |
1f7d6cbf S |
2344 | error = ath_beacon_alloc(sc, 0); |
2345 | if (error != 0) | |
2346 | return error; | |
c83be688 | 2347 | |
1f7d6cbf S |
2348 | ath_beacon_sync(sc, 0); |
2349 | } | |
8feceb67 | 2350 | } |
c83be688 | 2351 | |
8feceb67 | 2352 | /* Check for WLAN_CAPABILITY_PRIVACY ? */ |
d97809db | 2353 | if ((avp->av_opmode != NL80211_IFTYPE_STATION)) { |
8feceb67 VT |
2354 | for (i = 0; i < IEEE80211_WEP_NKID; i++) |
2355 | if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i)) | |
2356 | ath9k_hw_keysetmac(sc->sc_ah, | |
2357 | (u16)i, | |
17d7904d | 2358 | sc->curbssid); |
8feceb67 | 2359 | } |
c83be688 | 2360 | |
8feceb67 | 2361 | /* Only legacy IBSS for now */ |
05c914fe | 2362 | if (vif->type == NL80211_IFTYPE_ADHOC) |
8feceb67 | 2363 | ath_update_chainmask(sc, 0); |
f078f209 | 2364 | |
8feceb67 VT |
2365 | return 0; |
2366 | } | |
f078f209 | 2367 | |
8feceb67 VT |
2368 | #define SUPPORTED_FILTERS \ |
2369 | (FIF_PROMISC_IN_BSS | \ | |
2370 | FIF_ALLMULTI | \ | |
2371 | FIF_CONTROL | \ | |
2372 | FIF_OTHER_BSS | \ | |
2373 | FIF_BCN_PRBRESP_PROMISC | \ | |
2374 | FIF_FCSFAIL) | |
c83be688 | 2375 | |
8feceb67 VT |
2376 | /* FIXME: sc->sc_full_reset ? */ |
2377 | static void ath9k_configure_filter(struct ieee80211_hw *hw, | |
2378 | unsigned int changed_flags, | |
2379 | unsigned int *total_flags, | |
2380 | int mc_count, | |
2381 | struct dev_mc_list *mclist) | |
2382 | { | |
2383 | struct ath_softc *sc = hw->priv; | |
2384 | u32 rfilt; | |
f078f209 | 2385 | |
8feceb67 VT |
2386 | changed_flags &= SUPPORTED_FILTERS; |
2387 | *total_flags &= SUPPORTED_FILTERS; | |
f078f209 | 2388 | |
b77f483f | 2389 | sc->rx.rxfilter = *total_flags; |
8feceb67 VT |
2390 | rfilt = ath_calcrxfilter(sc); |
2391 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); | |
f078f209 | 2392 | |
8feceb67 | 2393 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
ba52da58 S |
2394 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { |
2395 | memcpy(sc->curbssid, ath_bcast_mac, ETH_ALEN); | |
2396 | sc->curaid = 0; | |
2397 | ath9k_hw_write_associd(sc); | |
2398 | } | |
8feceb67 | 2399 | } |
f078f209 | 2400 | |
b77f483f | 2401 | DPRINTF(sc, ATH_DBG_CONFIG, "Set HW RX filter: 0x%x\n", sc->rx.rxfilter); |
8feceb67 | 2402 | } |
f078f209 | 2403 | |
8feceb67 VT |
2404 | static void ath9k_sta_notify(struct ieee80211_hw *hw, |
2405 | struct ieee80211_vif *vif, | |
2406 | enum sta_notify_cmd cmd, | |
17741cdc | 2407 | struct ieee80211_sta *sta) |
8feceb67 VT |
2408 | { |
2409 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2410 | |
8feceb67 VT |
2411 | switch (cmd) { |
2412 | case STA_NOTIFY_ADD: | |
5640b08e | 2413 | ath_node_attach(sc, sta); |
8feceb67 VT |
2414 | break; |
2415 | case STA_NOTIFY_REMOVE: | |
b5aa9bf9 | 2416 | ath_node_detach(sc, sta); |
8feceb67 VT |
2417 | break; |
2418 | default: | |
2419 | break; | |
2420 | } | |
f078f209 LR |
2421 | } |
2422 | ||
141b38b6 | 2423 | static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue, |
8feceb67 | 2424 | const struct ieee80211_tx_queue_params *params) |
f078f209 | 2425 | { |
8feceb67 VT |
2426 | struct ath_softc *sc = hw->priv; |
2427 | struct ath9k_tx_queue_info qi; | |
2428 | int ret = 0, qnum; | |
f078f209 | 2429 | |
8feceb67 VT |
2430 | if (queue >= WME_NUM_AC) |
2431 | return 0; | |
f078f209 | 2432 | |
141b38b6 S |
2433 | mutex_lock(&sc->mutex); |
2434 | ||
8feceb67 VT |
2435 | qi.tqi_aifs = params->aifs; |
2436 | qi.tqi_cwmin = params->cw_min; | |
2437 | qi.tqi_cwmax = params->cw_max; | |
2438 | qi.tqi_burstTime = params->txop; | |
2439 | qnum = ath_get_hal_qnum(queue, sc); | |
f078f209 | 2440 | |
8feceb67 | 2441 | DPRINTF(sc, ATH_DBG_CONFIG, |
04bd4638 | 2442 | "Configure tx [queue/halq] [%d/%d], " |
8feceb67 | 2443 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", |
04bd4638 S |
2444 | queue, qnum, params->aifs, params->cw_min, |
2445 | params->cw_max, params->txop); | |
f078f209 | 2446 | |
8feceb67 VT |
2447 | ret = ath_txq_update(sc, qnum, &qi); |
2448 | if (ret) | |
04bd4638 | 2449 | DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n"); |
f078f209 | 2450 | |
141b38b6 S |
2451 | mutex_unlock(&sc->mutex); |
2452 | ||
8feceb67 VT |
2453 | return ret; |
2454 | } | |
f078f209 | 2455 | |
8feceb67 VT |
2456 | static int ath9k_set_key(struct ieee80211_hw *hw, |
2457 | enum set_key_cmd cmd, | |
dc822b5d JB |
2458 | struct ieee80211_vif *vif, |
2459 | struct ieee80211_sta *sta, | |
8feceb67 VT |
2460 | struct ieee80211_key_conf *key) |
2461 | { | |
2462 | struct ath_softc *sc = hw->priv; | |
2463 | int ret = 0; | |
f078f209 | 2464 | |
141b38b6 | 2465 | mutex_lock(&sc->mutex); |
3cbb5dd7 | 2466 | ath9k_ps_wakeup(sc); |
04bd4638 | 2467 | DPRINTF(sc, ATH_DBG_KEYCACHE, "Set HW Key\n"); |
f078f209 | 2468 | |
8feceb67 VT |
2469 | switch (cmd) { |
2470 | case SET_KEY: | |
dc822b5d | 2471 | ret = ath_key_config(sc, sta, key); |
6ace2891 JM |
2472 | if (ret >= 0) { |
2473 | key->hw_key_idx = ret; | |
8feceb67 VT |
2474 | /* push IV and Michael MIC generation to stack */ |
2475 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
2476 | if (key->alg == ALG_TKIP) | |
2477 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
0ced0e17 JM |
2478 | if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP) |
2479 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; | |
6ace2891 | 2480 | ret = 0; |
8feceb67 VT |
2481 | } |
2482 | break; | |
2483 | case DISABLE_KEY: | |
2484 | ath_key_delete(sc, key); | |
8feceb67 VT |
2485 | break; |
2486 | default: | |
2487 | ret = -EINVAL; | |
2488 | } | |
f078f209 | 2489 | |
3cbb5dd7 | 2490 | ath9k_ps_restore(sc); |
141b38b6 S |
2491 | mutex_unlock(&sc->mutex); |
2492 | ||
8feceb67 VT |
2493 | return ret; |
2494 | } | |
f078f209 | 2495 | |
8feceb67 VT |
2496 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
2497 | struct ieee80211_vif *vif, | |
2498 | struct ieee80211_bss_conf *bss_conf, | |
2499 | u32 changed) | |
2500 | { | |
2501 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2502 | |
141b38b6 S |
2503 | mutex_lock(&sc->mutex); |
2504 | ||
8feceb67 | 2505 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
04bd4638 | 2506 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n", |
8feceb67 VT |
2507 | bss_conf->use_short_preamble); |
2508 | if (bss_conf->use_short_preamble) | |
2509 | sc->sc_flags |= SC_OP_PREAMBLE_SHORT; | |
2510 | else | |
2511 | sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; | |
2512 | } | |
f078f209 | 2513 | |
8feceb67 | 2514 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
04bd4638 | 2515 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n", |
8feceb67 VT |
2516 | bss_conf->use_cts_prot); |
2517 | if (bss_conf->use_cts_prot && | |
2518 | hw->conf.channel->band != IEEE80211_BAND_5GHZ) | |
2519 | sc->sc_flags |= SC_OP_PROTECT_ENABLE; | |
2520 | else | |
2521 | sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; | |
2522 | } | |
f078f209 | 2523 | |
8feceb67 | 2524 | if (changed & BSS_CHANGED_ASSOC) { |
04bd4638 | 2525 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n", |
8feceb67 | 2526 | bss_conf->assoc); |
5640b08e | 2527 | ath9k_bss_assoc_info(sc, vif, bss_conf); |
8feceb67 | 2528 | } |
141b38b6 S |
2529 | |
2530 | mutex_unlock(&sc->mutex); | |
8feceb67 | 2531 | } |
f078f209 | 2532 | |
8feceb67 VT |
2533 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
2534 | { | |
2535 | u64 tsf; | |
2536 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2537 | |
141b38b6 S |
2538 | mutex_lock(&sc->mutex); |
2539 | tsf = ath9k_hw_gettsf64(sc->sc_ah); | |
2540 | mutex_unlock(&sc->mutex); | |
f078f209 | 2541 | |
8feceb67 VT |
2542 | return tsf; |
2543 | } | |
f078f209 | 2544 | |
3b5d665b AF |
2545 | static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf) |
2546 | { | |
2547 | struct ath_softc *sc = hw->priv; | |
3b5d665b | 2548 | |
141b38b6 S |
2549 | mutex_lock(&sc->mutex); |
2550 | ath9k_hw_settsf64(sc->sc_ah, tsf); | |
2551 | mutex_unlock(&sc->mutex); | |
3b5d665b AF |
2552 | } |
2553 | ||
8feceb67 VT |
2554 | static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
2555 | { | |
2556 | struct ath_softc *sc = hw->priv; | |
c83be688 | 2557 | |
141b38b6 S |
2558 | mutex_lock(&sc->mutex); |
2559 | ath9k_hw_reset_tsf(sc->sc_ah); | |
2560 | mutex_unlock(&sc->mutex); | |
8feceb67 | 2561 | } |
f078f209 | 2562 | |
8feceb67 | 2563 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
141b38b6 S |
2564 | enum ieee80211_ampdu_mlme_action action, |
2565 | struct ieee80211_sta *sta, | |
2566 | u16 tid, u16 *ssn) | |
8feceb67 VT |
2567 | { |
2568 | struct ath_softc *sc = hw->priv; | |
2569 | int ret = 0; | |
f078f209 | 2570 | |
8feceb67 VT |
2571 | switch (action) { |
2572 | case IEEE80211_AMPDU_RX_START: | |
dca3edb8 S |
2573 | if (!(sc->sc_flags & SC_OP_RXAGGR)) |
2574 | ret = -ENOTSUPP; | |
8feceb67 VT |
2575 | break; |
2576 | case IEEE80211_AMPDU_RX_STOP: | |
8feceb67 VT |
2577 | break; |
2578 | case IEEE80211_AMPDU_TX_START: | |
b5aa9bf9 | 2579 | ret = ath_tx_aggr_start(sc, sta, tid, ssn); |
8feceb67 VT |
2580 | if (ret < 0) |
2581 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2582 | "Unable to start TX aggregation\n"); |
8feceb67 | 2583 | else |
17741cdc | 2584 | ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
8feceb67 VT |
2585 | break; |
2586 | case IEEE80211_AMPDU_TX_STOP: | |
b5aa9bf9 | 2587 | ret = ath_tx_aggr_stop(sc, sta, tid); |
8feceb67 VT |
2588 | if (ret < 0) |
2589 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2590 | "Unable to stop TX aggregation\n"); |
f078f209 | 2591 | |
17741cdc | 2592 | ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
8feceb67 | 2593 | break; |
8469cdef S |
2594 | case IEEE80211_AMPDU_TX_RESUME: |
2595 | ath_tx_aggr_resume(sc, sta, tid); | |
2596 | break; | |
8feceb67 | 2597 | default: |
04bd4638 | 2598 | DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n"); |
8feceb67 VT |
2599 | } |
2600 | ||
2601 | return ret; | |
f078f209 LR |
2602 | } |
2603 | ||
6baff7f9 | 2604 | struct ieee80211_ops ath9k_ops = { |
8feceb67 VT |
2605 | .tx = ath9k_tx, |
2606 | .start = ath9k_start, | |
2607 | .stop = ath9k_stop, | |
2608 | .add_interface = ath9k_add_interface, | |
2609 | .remove_interface = ath9k_remove_interface, | |
2610 | .config = ath9k_config, | |
2611 | .config_interface = ath9k_config_interface, | |
2612 | .configure_filter = ath9k_configure_filter, | |
8feceb67 VT |
2613 | .sta_notify = ath9k_sta_notify, |
2614 | .conf_tx = ath9k_conf_tx, | |
8feceb67 | 2615 | .bss_info_changed = ath9k_bss_info_changed, |
8feceb67 | 2616 | .set_key = ath9k_set_key, |
8feceb67 | 2617 | .get_tsf = ath9k_get_tsf, |
3b5d665b | 2618 | .set_tsf = ath9k_set_tsf, |
8feceb67 | 2619 | .reset_tsf = ath9k_reset_tsf, |
4233df6b | 2620 | .ampdu_action = ath9k_ampdu_action, |
8feceb67 VT |
2621 | }; |
2622 | ||
392dff83 BP |
2623 | static struct { |
2624 | u32 version; | |
2625 | const char * name; | |
2626 | } ath_mac_bb_names[] = { | |
2627 | { AR_SREV_VERSION_5416_PCI, "5416" }, | |
2628 | { AR_SREV_VERSION_5416_PCIE, "5418" }, | |
2629 | { AR_SREV_VERSION_9100, "9100" }, | |
2630 | { AR_SREV_VERSION_9160, "9160" }, | |
2631 | { AR_SREV_VERSION_9280, "9280" }, | |
2632 | { AR_SREV_VERSION_9285, "9285" } | |
2633 | }; | |
2634 | ||
2635 | static struct { | |
2636 | u16 version; | |
2637 | const char * name; | |
2638 | } ath_rf_names[] = { | |
2639 | { 0, "5133" }, | |
2640 | { AR_RAD5133_SREV_MAJOR, "5133" }, | |
2641 | { AR_RAD5122_SREV_MAJOR, "5122" }, | |
2642 | { AR_RAD2133_SREV_MAJOR, "2133" }, | |
2643 | { AR_RAD2122_SREV_MAJOR, "2122" } | |
2644 | }; | |
2645 | ||
2646 | /* | |
2647 | * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown. | |
2648 | */ | |
6baff7f9 | 2649 | const char * |
392dff83 BP |
2650 | ath_mac_bb_name(u32 mac_bb_version) |
2651 | { | |
2652 | int i; | |
2653 | ||
2654 | for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) { | |
2655 | if (ath_mac_bb_names[i].version == mac_bb_version) { | |
2656 | return ath_mac_bb_names[i].name; | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | return "????"; | |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * Return the RF name. "????" is returned if the RF is unknown. | |
2665 | */ | |
6baff7f9 | 2666 | const char * |
392dff83 BP |
2667 | ath_rf_name(u16 rf_version) |
2668 | { | |
2669 | int i; | |
2670 | ||
2671 | for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) { | |
2672 | if (ath_rf_names[i].version == rf_version) { | |
2673 | return ath_rf_names[i].name; | |
2674 | } | |
2675 | } | |
2676 | ||
2677 | return "????"; | |
2678 | } | |
2679 | ||
6baff7f9 | 2680 | static int __init ath9k_init(void) |
f078f209 | 2681 | { |
ca8a8560 VT |
2682 | int error; |
2683 | ||
ca8a8560 VT |
2684 | /* Register rate control algorithm */ |
2685 | error = ath_rate_control_register(); | |
2686 | if (error != 0) { | |
2687 | printk(KERN_ERR | |
b51bb3cd LR |
2688 | "ath9k: Unable to register rate control " |
2689 | "algorithm: %d\n", | |
ca8a8560 | 2690 | error); |
6baff7f9 | 2691 | goto err_out; |
ca8a8560 VT |
2692 | } |
2693 | ||
6baff7f9 GJ |
2694 | error = ath_pci_init(); |
2695 | if (error < 0) { | |
f078f209 | 2696 | printk(KERN_ERR |
b51bb3cd | 2697 | "ath9k: No PCI devices found, driver not installed.\n"); |
6baff7f9 GJ |
2698 | error = -ENODEV; |
2699 | goto err_rate_unregister; | |
f078f209 LR |
2700 | } |
2701 | ||
09329d37 GJ |
2702 | error = ath_ahb_init(); |
2703 | if (error < 0) { | |
2704 | error = -ENODEV; | |
2705 | goto err_pci_exit; | |
2706 | } | |
2707 | ||
f078f209 | 2708 | return 0; |
6baff7f9 | 2709 | |
09329d37 GJ |
2710 | err_pci_exit: |
2711 | ath_pci_exit(); | |
2712 | ||
6baff7f9 GJ |
2713 | err_rate_unregister: |
2714 | ath_rate_control_unregister(); | |
2715 | err_out: | |
2716 | return error; | |
f078f209 | 2717 | } |
6baff7f9 | 2718 | module_init(ath9k_init); |
f078f209 | 2719 | |
6baff7f9 | 2720 | static void __exit ath9k_exit(void) |
f078f209 | 2721 | { |
09329d37 | 2722 | ath_ahb_exit(); |
6baff7f9 | 2723 | ath_pci_exit(); |
ca8a8560 | 2724 | ath_rate_control_unregister(); |
04bd4638 | 2725 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); |
f078f209 | 2726 | } |
6baff7f9 | 2727 | module_exit(ath9k_exit); |