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 LR |
17 | #include <linux/nl80211.h> |
18 | #include "core.h" | |
392dff83 | 19 | #include "reg.h" |
2a163c6d | 20 | #include "hw.h" |
f078f209 LR |
21 | |
22 | #define ATH_PCI_VERSION "0.1" | |
23 | ||
f078f209 LR |
24 | static char *dev_info = "ath9k"; |
25 | ||
26 | MODULE_AUTHOR("Atheros Communications"); | |
27 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); | |
28 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); | |
29 | MODULE_LICENSE("Dual BSD/GPL"); | |
30 | ||
31 | static struct pci_device_id ath_pci_id_table[] __devinitdata = { | |
32 | { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */ | |
33 | { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */ | |
34 | { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */ | |
35 | { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */ | |
36 | { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */ | |
e7594072 | 37 | { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */ |
f078f209 LR |
38 | { 0 } |
39 | }; | |
40 | ||
9757d556 S |
41 | static void ath_detach(struct ath_softc *sc); |
42 | ||
ff37e337 S |
43 | /* return bus cachesize in 4B word units */ |
44 | ||
45 | static void bus_read_cachesize(struct ath_softc *sc, int *csz) | |
46 | { | |
47 | u8 u8tmp; | |
48 | ||
49 | pci_read_config_byte(sc->pdev, PCI_CACHE_LINE_SIZE, (u8 *)&u8tmp); | |
50 | *csz = (int)u8tmp; | |
51 | ||
52 | /* | |
53 | * This check was put in to avoid "unplesant" consequences if | |
54 | * the bootrom has not fully initialized all PCI devices. | |
55 | * Sometimes the cache line size register is not set | |
56 | */ | |
57 | ||
58 | if (*csz == 0) | |
59 | *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ | |
60 | } | |
61 | ||
62 | static void ath_setcurmode(struct ath_softc *sc, enum wireless_mode mode) | |
63 | { | |
9d8eed12 | 64 | sc->cur_rate_table = sc->hw_rate_table[mode]; |
ff37e337 S |
65 | /* |
66 | * All protection frames are transmited at 2Mb/s for | |
67 | * 11g, otherwise at 1Mb/s. | |
68 | * XXX select protection rate index from rate table. | |
69 | */ | |
70 | sc->sc_protrix = (mode == ATH9K_MODE_11G ? 1 : 0); | |
71 | } | |
72 | ||
73 | static enum wireless_mode ath_chan2mode(struct ath9k_channel *chan) | |
74 | { | |
75 | if (chan->chanmode == CHANNEL_A) | |
76 | return ATH9K_MODE_11A; | |
77 | else if (chan->chanmode == CHANNEL_G) | |
78 | return ATH9K_MODE_11G; | |
79 | else if (chan->chanmode == CHANNEL_B) | |
80 | return ATH9K_MODE_11B; | |
81 | else if (chan->chanmode == CHANNEL_A_HT20) | |
82 | return ATH9K_MODE_11NA_HT20; | |
83 | else if (chan->chanmode == CHANNEL_G_HT20) | |
84 | return ATH9K_MODE_11NG_HT20; | |
85 | else if (chan->chanmode == CHANNEL_A_HT40PLUS) | |
86 | return ATH9K_MODE_11NA_HT40PLUS; | |
87 | else if (chan->chanmode == CHANNEL_A_HT40MINUS) | |
88 | return ATH9K_MODE_11NA_HT40MINUS; | |
89 | else if (chan->chanmode == CHANNEL_G_HT40PLUS) | |
90 | return ATH9K_MODE_11NG_HT40PLUS; | |
91 | else if (chan->chanmode == CHANNEL_G_HT40MINUS) | |
92 | return ATH9K_MODE_11NG_HT40MINUS; | |
93 | ||
94 | WARN_ON(1); /* should not get here */ | |
95 | ||
96 | return ATH9K_MODE_11B; | |
97 | } | |
98 | ||
99 | static void ath_update_txpow(struct ath_softc *sc) | |
100 | { | |
101 | struct ath_hal *ah = sc->sc_ah; | |
102 | u32 txpow; | |
103 | ||
104 | if (sc->sc_curtxpow != sc->sc_config.txpowlimit) { | |
105 | ath9k_hw_set_txpowerlimit(ah, sc->sc_config.txpowlimit); | |
106 | /* read back in case value is clamped */ | |
107 | ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow); | |
108 | sc->sc_curtxpow = txpow; | |
109 | } | |
110 | } | |
111 | ||
112 | static u8 parse_mpdudensity(u8 mpdudensity) | |
113 | { | |
114 | /* | |
115 | * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": | |
116 | * 0 for no restriction | |
117 | * 1 for 1/4 us | |
118 | * 2 for 1/2 us | |
119 | * 3 for 1 us | |
120 | * 4 for 2 us | |
121 | * 5 for 4 us | |
122 | * 6 for 8 us | |
123 | * 7 for 16 us | |
124 | */ | |
125 | switch (mpdudensity) { | |
126 | case 0: | |
127 | return 0; | |
128 | case 1: | |
129 | case 2: | |
130 | case 3: | |
131 | /* Our lower layer calculations limit our precision to | |
132 | 1 microsecond */ | |
133 | return 1; | |
134 | case 4: | |
135 | return 2; | |
136 | case 5: | |
137 | return 4; | |
138 | case 6: | |
139 | return 8; | |
140 | case 7: | |
141 | return 16; | |
142 | default: | |
143 | return 0; | |
144 | } | |
145 | } | |
146 | ||
147 | static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band) | |
148 | { | |
149 | struct ath_rate_table *rate_table = NULL; | |
150 | struct ieee80211_supported_band *sband; | |
151 | struct ieee80211_rate *rate; | |
152 | int i, maxrates; | |
153 | ||
154 | switch (band) { | |
155 | case IEEE80211_BAND_2GHZ: | |
156 | rate_table = sc->hw_rate_table[ATH9K_MODE_11G]; | |
157 | break; | |
158 | case IEEE80211_BAND_5GHZ: | |
159 | rate_table = sc->hw_rate_table[ATH9K_MODE_11A]; | |
160 | break; | |
161 | default: | |
162 | break; | |
163 | } | |
164 | ||
165 | if (rate_table == NULL) | |
166 | return; | |
167 | ||
168 | sband = &sc->sbands[band]; | |
169 | rate = sc->rates[band]; | |
170 | ||
171 | if (rate_table->rate_cnt > ATH_RATE_MAX) | |
172 | maxrates = ATH_RATE_MAX; | |
173 | else | |
174 | maxrates = rate_table->rate_cnt; | |
175 | ||
176 | for (i = 0; i < maxrates; i++) { | |
177 | rate[i].bitrate = rate_table->info[i].ratekbps / 100; | |
178 | rate[i].hw_value = rate_table->info[i].ratecode; | |
179 | sband->n_bitrates++; | |
04bd4638 S |
180 | DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n", |
181 | rate[i].bitrate / 10, rate[i].hw_value); | |
ff37e337 S |
182 | } |
183 | } | |
184 | ||
185 | static int ath_setup_channels(struct ath_softc *sc) | |
186 | { | |
187 | struct ath_hal *ah = sc->sc_ah; | |
188 | int nchan, i, a = 0, b = 0; | |
189 | u8 regclassids[ATH_REGCLASSIDS_MAX]; | |
190 | u32 nregclass = 0; | |
191 | struct ieee80211_supported_band *band_2ghz; | |
192 | struct ieee80211_supported_band *band_5ghz; | |
193 | struct ieee80211_channel *chan_2ghz; | |
194 | struct ieee80211_channel *chan_5ghz; | |
195 | struct ath9k_channel *c; | |
196 | ||
197 | /* Fill in ah->ah_channels */ | |
198 | if (!ath9k_regd_init_channels(ah, ATH_CHAN_MAX, (u32 *)&nchan, | |
199 | regclassids, ATH_REGCLASSIDS_MAX, | |
200 | &nregclass, CTRY_DEFAULT, false, 1)) { | |
201 | u32 rd = ah->ah_currentRD; | |
202 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 203 | "Unable to collect channel list; " |
ff37e337 | 204 | "regdomain likely %u country code %u\n", |
04bd4638 | 205 | rd, CTRY_DEFAULT); |
ff37e337 S |
206 | return -EINVAL; |
207 | } | |
208 | ||
209 | band_2ghz = &sc->sbands[IEEE80211_BAND_2GHZ]; | |
210 | band_5ghz = &sc->sbands[IEEE80211_BAND_5GHZ]; | |
211 | chan_2ghz = sc->channels[IEEE80211_BAND_2GHZ]; | |
212 | chan_5ghz = sc->channels[IEEE80211_BAND_5GHZ]; | |
213 | ||
214 | for (i = 0; i < nchan; i++) { | |
215 | c = &ah->ah_channels[i]; | |
216 | if (IS_CHAN_2GHZ(c)) { | |
217 | chan_2ghz[a].band = IEEE80211_BAND_2GHZ; | |
218 | chan_2ghz[a].center_freq = c->channel; | |
219 | chan_2ghz[a].max_power = c->maxTxPower; | |
220 | ||
221 | if (c->privFlags & CHANNEL_DISALLOW_ADHOC) | |
222 | chan_2ghz[a].flags |= IEEE80211_CHAN_NO_IBSS; | |
223 | if (c->channelFlags & CHANNEL_PASSIVE) | |
224 | chan_2ghz[a].flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
225 | ||
226 | band_2ghz->n_channels = ++a; | |
227 | ||
04bd4638 | 228 | DPRINTF(sc, ATH_DBG_CONFIG, "2MHz channel: %d, " |
ff37e337 | 229 | "channelFlags: 0x%x\n", |
04bd4638 | 230 | c->channel, c->channelFlags); |
ff37e337 S |
231 | } else if (IS_CHAN_5GHZ(c)) { |
232 | chan_5ghz[b].band = IEEE80211_BAND_5GHZ; | |
233 | chan_5ghz[b].center_freq = c->channel; | |
234 | chan_5ghz[b].max_power = c->maxTxPower; | |
235 | ||
236 | if (c->privFlags & CHANNEL_DISALLOW_ADHOC) | |
237 | chan_5ghz[b].flags |= IEEE80211_CHAN_NO_IBSS; | |
238 | if (c->channelFlags & CHANNEL_PASSIVE) | |
239 | chan_5ghz[b].flags |= IEEE80211_CHAN_PASSIVE_SCAN; | |
240 | ||
241 | band_5ghz->n_channels = ++b; | |
242 | ||
04bd4638 | 243 | DPRINTF(sc, ATH_DBG_CONFIG, "5MHz channel: %d, " |
ff37e337 | 244 | "channelFlags: 0x%x\n", |
04bd4638 | 245 | c->channel, c->channelFlags); |
ff37e337 S |
246 | } |
247 | } | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | /* | |
253 | * Set/change channels. If the channel is really being changed, it's done | |
254 | * by reseting the chip. To accomplish this we must first cleanup any pending | |
255 | * DMA, then restart stuff. | |
256 | */ | |
257 | static int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) | |
258 | { | |
259 | struct ath_hal *ah = sc->sc_ah; | |
260 | bool fastcc = true, stopped; | |
261 | ||
262 | if (sc->sc_flags & SC_OP_INVALID) | |
263 | return -EIO; | |
264 | ||
ff37e337 S |
265 | if (hchan->channel != sc->sc_ah->ah_curchan->channel || |
266 | hchan->channelFlags != sc->sc_ah->ah_curchan->channelFlags || | |
267 | (sc->sc_flags & SC_OP_CHAINMASK_UPDATE) || | |
268 | (sc->sc_flags & SC_OP_FULL_RESET)) { | |
269 | int status; | |
270 | /* | |
271 | * This is only performed if the channel settings have | |
272 | * actually changed. | |
273 | * | |
274 | * To switch channels clear any pending DMA operations; | |
275 | * wait long enough for the RX fifo to drain, reset the | |
276 | * hardware at the new frequency, and then re-enable | |
277 | * the relevant bits of the h/w. | |
278 | */ | |
04bd4638 S |
279 | ath9k_hw_set_interrupts(ah, 0); |
280 | ath_draintxq(sc, false); | |
281 | stopped = ath_stoprecv(sc); | |
ff37e337 S |
282 | |
283 | /* XXX: do not flush receive queue here. We don't want | |
284 | * to flush data frames already in queue because of | |
285 | * changing channel. */ | |
286 | ||
287 | if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) | |
288 | fastcc = false; | |
289 | ||
99405f93 | 290 | DPRINTF(sc, ATH_DBG_CONFIG, |
04bd4638 | 291 | "(%u MHz) -> (%u MHz), cflags:%x, chanwidth: %d\n", |
99405f93 S |
292 | sc->sc_ah->ah_curchan->channel, |
293 | hchan->channel, hchan->channelFlags, sc->tx_chan_width); | |
294 | ||
ff37e337 | 295 | spin_lock_bh(&sc->sc_resetlock); |
99405f93 | 296 | if (!ath9k_hw_reset(ah, hchan, sc->tx_chan_width, |
ff37e337 S |
297 | sc->sc_tx_chainmask, sc->sc_rx_chainmask, |
298 | sc->sc_ht_extprotspacing, fastcc, &status)) { | |
299 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 S |
300 | "Unable to reset channel %u (%uMhz) " |
301 | "flags 0x%x hal status %u\n", | |
ff37e337 S |
302 | ath9k_hw_mhz2ieee(ah, hchan->channel, |
303 | hchan->channelFlags), | |
304 | hchan->channel, hchan->channelFlags, status); | |
305 | spin_unlock_bh(&sc->sc_resetlock); | |
306 | return -EIO; | |
307 | } | |
308 | spin_unlock_bh(&sc->sc_resetlock); | |
309 | ||
310 | sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE; | |
311 | sc->sc_flags &= ~SC_OP_FULL_RESET; | |
312 | ||
313 | if (ath_startrecv(sc) != 0) { | |
314 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 315 | "Unable to restart recv logic\n"); |
ff37e337 S |
316 | return -EIO; |
317 | } | |
318 | ||
319 | ath_setcurmode(sc, ath_chan2mode(hchan)); | |
320 | ath_update_txpow(sc); | |
321 | ath9k_hw_set_interrupts(ah, sc->sc_imask); | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | ||
326 | /* | |
327 | * This routine performs the periodic noise floor calibration function | |
328 | * that is used to adjust and optimize the chip performance. This | |
329 | * takes environmental changes (location, temperature) into account. | |
330 | * When the task is complete, it reschedules itself depending on the | |
331 | * appropriate interval that was calculated. | |
332 | */ | |
333 | static void ath_ani_calibrate(unsigned long data) | |
334 | { | |
335 | struct ath_softc *sc; | |
336 | struct ath_hal *ah; | |
337 | bool longcal = false; | |
338 | bool shortcal = false; | |
339 | bool aniflag = false; | |
340 | unsigned int timestamp = jiffies_to_msecs(jiffies); | |
341 | u32 cal_interval; | |
342 | ||
343 | sc = (struct ath_softc *)data; | |
344 | ah = sc->sc_ah; | |
345 | ||
346 | /* | |
347 | * don't calibrate when we're scanning. | |
348 | * we are most likely not on our home channel. | |
349 | */ | |
b77f483f | 350 | if (sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC) |
ff37e337 S |
351 | return; |
352 | ||
353 | /* Long calibration runs independently of short calibration. */ | |
354 | if ((timestamp - sc->sc_ani.sc_longcal_timer) >= ATH_LONG_CALINTERVAL) { | |
355 | longcal = true; | |
04bd4638 | 356 | DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies); |
ff37e337 S |
357 | sc->sc_ani.sc_longcal_timer = timestamp; |
358 | } | |
359 | ||
360 | /* Short calibration applies only while sc_caldone is false */ | |
361 | if (!sc->sc_ani.sc_caldone) { | |
362 | if ((timestamp - sc->sc_ani.sc_shortcal_timer) >= | |
363 | ATH_SHORT_CALINTERVAL) { | |
364 | shortcal = true; | |
04bd4638 | 365 | DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies); |
ff37e337 S |
366 | sc->sc_ani.sc_shortcal_timer = timestamp; |
367 | sc->sc_ani.sc_resetcal_timer = timestamp; | |
368 | } | |
369 | } else { | |
370 | if ((timestamp - sc->sc_ani.sc_resetcal_timer) >= | |
371 | ATH_RESTART_CALINTERVAL) { | |
372 | ath9k_hw_reset_calvalid(ah, ah->ah_curchan, | |
373 | &sc->sc_ani.sc_caldone); | |
374 | if (sc->sc_ani.sc_caldone) | |
375 | sc->sc_ani.sc_resetcal_timer = timestamp; | |
376 | } | |
377 | } | |
378 | ||
379 | /* Verify whether we must check ANI */ | |
380 | if ((timestamp - sc->sc_ani.sc_checkani_timer) >= | |
381 | ATH_ANI_POLLINTERVAL) { | |
382 | aniflag = true; | |
383 | sc->sc_ani.sc_checkani_timer = timestamp; | |
384 | } | |
385 | ||
386 | /* Skip all processing if there's nothing to do. */ | |
387 | if (longcal || shortcal || aniflag) { | |
388 | /* Call ANI routine if necessary */ | |
389 | if (aniflag) | |
390 | ath9k_hw_ani_monitor(ah, &sc->sc_halstats, | |
391 | ah->ah_curchan); | |
392 | ||
393 | /* Perform calibration if necessary */ | |
394 | if (longcal || shortcal) { | |
395 | bool iscaldone = false; | |
396 | ||
397 | if (ath9k_hw_calibrate(ah, ah->ah_curchan, | |
398 | sc->sc_rx_chainmask, longcal, | |
399 | &iscaldone)) { | |
400 | if (longcal) | |
401 | sc->sc_ani.sc_noise_floor = | |
402 | ath9k_hw_getchan_noise(ah, | |
403 | ah->ah_curchan); | |
404 | ||
405 | DPRINTF(sc, ATH_DBG_ANI, | |
04bd4638 | 406 | "calibrate chan %u/%x nf: %d\n", |
ff37e337 S |
407 | ah->ah_curchan->channel, |
408 | ah->ah_curchan->channelFlags, | |
409 | sc->sc_ani.sc_noise_floor); | |
410 | } else { | |
411 | DPRINTF(sc, ATH_DBG_ANY, | |
04bd4638 | 412 | "calibrate chan %u/%x failed\n", |
ff37e337 S |
413 | ah->ah_curchan->channel, |
414 | ah->ah_curchan->channelFlags); | |
415 | } | |
416 | sc->sc_ani.sc_caldone = iscaldone; | |
417 | } | |
418 | } | |
419 | ||
420 | /* | |
421 | * Set timer interval based on previous results. | |
422 | * The interval must be the shortest necessary to satisfy ANI, | |
423 | * short calibration and long calibration. | |
424 | */ | |
aac9207e S |
425 | cal_interval = ATH_LONG_CALINTERVAL; |
426 | if (sc->sc_ah->ah_config.enable_ani) | |
427 | cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); | |
ff37e337 S |
428 | if (!sc->sc_ani.sc_caldone) |
429 | cal_interval = min(cal_interval, (u32)ATH_SHORT_CALINTERVAL); | |
430 | ||
431 | mod_timer(&sc->sc_ani.timer, jiffies + msecs_to_jiffies(cal_interval)); | |
432 | } | |
433 | ||
434 | /* | |
435 | * Update tx/rx chainmask. For legacy association, | |
436 | * hard code chainmask to 1x1, for 11n association, use | |
437 | * the chainmask configuration. | |
438 | */ | |
439 | static void ath_update_chainmask(struct ath_softc *sc, int is_ht) | |
440 | { | |
441 | sc->sc_flags |= SC_OP_CHAINMASK_UPDATE; | |
442 | if (is_ht) { | |
443 | sc->sc_tx_chainmask = sc->sc_ah->ah_caps.tx_chainmask; | |
444 | sc->sc_rx_chainmask = sc->sc_ah->ah_caps.rx_chainmask; | |
445 | } else { | |
446 | sc->sc_tx_chainmask = 1; | |
447 | sc->sc_rx_chainmask = 1; | |
448 | } | |
449 | ||
04bd4638 S |
450 | DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n", |
451 | sc->sc_tx_chainmask, sc->sc_rx_chainmask); | |
ff37e337 S |
452 | } |
453 | ||
454 | static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
455 | { | |
456 | struct ath_node *an; | |
457 | ||
458 | an = (struct ath_node *)sta->drv_priv; | |
459 | ||
460 | if (sc->sc_flags & SC_OP_TXAGGR) | |
461 | ath_tx_node_init(sc, an); | |
462 | ||
463 | an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR + | |
464 | sta->ht_cap.ampdu_factor); | |
465 | an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density); | |
466 | } | |
467 | ||
468 | static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) | |
469 | { | |
470 | struct ath_node *an = (struct ath_node *)sta->drv_priv; | |
471 | ||
472 | if (sc->sc_flags & SC_OP_TXAGGR) | |
473 | ath_tx_node_cleanup(sc, an); | |
474 | } | |
475 | ||
476 | static void ath9k_tasklet(unsigned long data) | |
477 | { | |
478 | struct ath_softc *sc = (struct ath_softc *)data; | |
479 | u32 status = sc->sc_intrstatus; | |
480 | ||
481 | if (status & ATH9K_INT_FATAL) { | |
482 | /* need a chip reset */ | |
483 | ath_reset(sc, false); | |
484 | return; | |
485 | } else { | |
486 | ||
487 | if (status & | |
488 | (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) { | |
b77f483f | 489 | spin_lock_bh(&sc->rx.rxflushlock); |
ff37e337 | 490 | ath_rx_tasklet(sc, 0); |
b77f483f | 491 | spin_unlock_bh(&sc->rx.rxflushlock); |
ff37e337 S |
492 | } |
493 | /* XXX: optimize this */ | |
494 | if (status & ATH9K_INT_TX) | |
495 | ath_tx_tasklet(sc); | |
496 | } | |
497 | ||
498 | /* re-enable hardware interrupt */ | |
499 | ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask); | |
500 | } | |
501 | ||
502 | static irqreturn_t ath_isr(int irq, void *dev) | |
503 | { | |
504 | struct ath_softc *sc = dev; | |
505 | struct ath_hal *ah = sc->sc_ah; | |
506 | enum ath9k_int status; | |
507 | bool sched = false; | |
508 | ||
509 | do { | |
510 | if (sc->sc_flags & SC_OP_INVALID) { | |
511 | /* | |
512 | * The hardware is not ready/present, don't | |
513 | * touch anything. Note this can happen early | |
514 | * on if the IRQ is shared. | |
515 | */ | |
516 | return IRQ_NONE; | |
517 | } | |
518 | if (!ath9k_hw_intrpend(ah)) { /* shared irq, not for us */ | |
519 | return IRQ_NONE; | |
520 | } | |
521 | ||
522 | /* | |
523 | * Figure out the reason(s) for the interrupt. Note | |
524 | * that the hal returns a pseudo-ISR that may include | |
525 | * bits we haven't explicitly enabled so we mask the | |
526 | * value to insure we only process bits we requested. | |
527 | */ | |
528 | ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ | |
529 | ||
530 | status &= sc->sc_imask; /* discard unasked-for bits */ | |
531 | ||
532 | /* | |
533 | * If there are no status bits set, then this interrupt was not | |
534 | * for me (should have been caught above). | |
535 | */ | |
536 | if (!status) | |
537 | return IRQ_NONE; | |
538 | ||
539 | sc->sc_intrstatus = status; | |
540 | ||
541 | if (status & ATH9K_INT_FATAL) { | |
542 | /* need a chip reset */ | |
543 | sched = true; | |
544 | } else if (status & ATH9K_INT_RXORN) { | |
545 | /* need a chip reset */ | |
546 | sched = true; | |
547 | } else { | |
548 | if (status & ATH9K_INT_SWBA) { | |
549 | /* schedule a tasklet for beacon handling */ | |
550 | tasklet_schedule(&sc->bcon_tasklet); | |
551 | } | |
552 | if (status & ATH9K_INT_RXEOL) { | |
553 | /* | |
554 | * NB: the hardware should re-read the link when | |
555 | * RXE bit is written, but it doesn't work | |
556 | * at least on older hardware revs. | |
557 | */ | |
558 | sched = true; | |
559 | } | |
560 | ||
561 | if (status & ATH9K_INT_TXURN) | |
562 | /* bump tx trigger level */ | |
563 | ath9k_hw_updatetxtriglevel(ah, true); | |
564 | /* XXX: optimize this */ | |
565 | if (status & ATH9K_INT_RX) | |
566 | sched = true; | |
567 | if (status & ATH9K_INT_TX) | |
568 | sched = true; | |
569 | if (status & ATH9K_INT_BMISS) | |
570 | sched = true; | |
571 | /* carrier sense timeout */ | |
572 | if (status & ATH9K_INT_CST) | |
573 | sched = true; | |
574 | if (status & ATH9K_INT_MIB) { | |
575 | /* | |
576 | * Disable interrupts until we service the MIB | |
577 | * interrupt; otherwise it will continue to | |
578 | * fire. | |
579 | */ | |
580 | ath9k_hw_set_interrupts(ah, 0); | |
581 | /* | |
582 | * Let the hal handle the event. We assume | |
583 | * it will clear whatever condition caused | |
584 | * the interrupt. | |
585 | */ | |
586 | ath9k_hw_procmibevent(ah, &sc->sc_halstats); | |
587 | ath9k_hw_set_interrupts(ah, sc->sc_imask); | |
588 | } | |
589 | if (status & ATH9K_INT_TIM_TIMER) { | |
590 | if (!(ah->ah_caps.hw_caps & | |
591 | ATH9K_HW_CAP_AUTOSLEEP)) { | |
592 | /* Clear RxAbort bit so that we can | |
593 | * receive frames */ | |
594 | ath9k_hw_setrxabort(ah, 0); | |
595 | sched = true; | |
596 | } | |
597 | } | |
598 | } | |
599 | } while (0); | |
600 | ||
817e11de S |
601 | ath_debug_stat_interrupt(sc, status); |
602 | ||
ff37e337 S |
603 | if (sched) { |
604 | /* turn off every interrupt except SWBA */ | |
605 | ath9k_hw_set_interrupts(ah, (sc->sc_imask & ATH9K_INT_SWBA)); | |
606 | tasklet_schedule(&sc->intr_tq); | |
607 | } | |
608 | ||
609 | return IRQ_HANDLED; | |
610 | } | |
611 | ||
f078f209 LR |
612 | static int ath_get_channel(struct ath_softc *sc, |
613 | struct ieee80211_channel *chan) | |
614 | { | |
615 | int i; | |
616 | ||
617 | for (i = 0; i < sc->sc_ah->ah_nchan; i++) { | |
618 | if (sc->sc_ah->ah_channels[i].channel == chan->center_freq) | |
619 | return i; | |
620 | } | |
621 | ||
622 | return -1; | |
623 | } | |
624 | ||
625 | static u32 ath_get_extchanmode(struct ath_softc *sc, | |
99405f93 | 626 | struct ieee80211_channel *chan, |
094d05dc | 627 | enum nl80211_channel_type channel_type) |
f078f209 LR |
628 | { |
629 | u32 chanmode = 0; | |
f078f209 LR |
630 | |
631 | switch (chan->band) { | |
632 | case IEEE80211_BAND_2GHZ: | |
094d05dc S |
633 | switch(channel_type) { |
634 | case NL80211_CHAN_NO_HT: | |
635 | case NL80211_CHAN_HT20: | |
f078f209 | 636 | chanmode = CHANNEL_G_HT20; |
094d05dc S |
637 | break; |
638 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 639 | chanmode = CHANNEL_G_HT40PLUS; |
094d05dc S |
640 | break; |
641 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 642 | chanmode = CHANNEL_G_HT40MINUS; |
094d05dc S |
643 | break; |
644 | } | |
f078f209 LR |
645 | break; |
646 | case IEEE80211_BAND_5GHZ: | |
094d05dc S |
647 | switch(channel_type) { |
648 | case NL80211_CHAN_NO_HT: | |
649 | case NL80211_CHAN_HT20: | |
f078f209 | 650 | chanmode = CHANNEL_A_HT20; |
094d05dc S |
651 | break; |
652 | case NL80211_CHAN_HT40PLUS: | |
f078f209 | 653 | chanmode = CHANNEL_A_HT40PLUS; |
094d05dc S |
654 | break; |
655 | case NL80211_CHAN_HT40MINUS: | |
f078f209 | 656 | chanmode = CHANNEL_A_HT40MINUS; |
094d05dc S |
657 | break; |
658 | } | |
f078f209 LR |
659 | break; |
660 | default: | |
661 | break; | |
662 | } | |
663 | ||
664 | return chanmode; | |
665 | } | |
666 | ||
ff37e337 S |
667 | static int ath_keyset(struct ath_softc *sc, u16 keyix, |
668 | struct ath9k_keyval *hk, const u8 mac[ETH_ALEN]) | |
669 | { | |
670 | bool status; | |
671 | ||
672 | status = ath9k_hw_set_keycache_entry(sc->sc_ah, | |
673 | keyix, hk, mac, false); | |
674 | ||
675 | return status != false; | |
676 | } | |
f078f209 | 677 | |
6ace2891 | 678 | static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key, |
f078f209 LR |
679 | struct ath9k_keyval *hk, |
680 | const u8 *addr) | |
681 | { | |
6ace2891 JM |
682 | const u8 *key_rxmic; |
683 | const u8 *key_txmic; | |
f078f209 | 684 | |
6ace2891 JM |
685 | key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; |
686 | key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; | |
f078f209 LR |
687 | |
688 | if (addr == NULL) { | |
689 | /* Group key installation */ | |
6ace2891 JM |
690 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); |
691 | return ath_keyset(sc, keyix, hk, addr); | |
f078f209 LR |
692 | } |
693 | if (!sc->sc_splitmic) { | |
694 | /* | |
695 | * data key goes at first index, | |
696 | * the hal handles the MIC keys at index+64. | |
697 | */ | |
698 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
699 | memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic)); | |
6ace2891 | 700 | return ath_keyset(sc, keyix, hk, addr); |
f078f209 LR |
701 | } |
702 | /* | |
703 | * TX key goes at first index, RX key at +32. | |
704 | * The hal handles the MIC keys at index+64. | |
705 | */ | |
706 | memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); | |
6ace2891 | 707 | if (!ath_keyset(sc, keyix, hk, NULL)) { |
f078f209 LR |
708 | /* Txmic entry failed. No need to proceed further */ |
709 | DPRINTF(sc, ATH_DBG_KEYCACHE, | |
04bd4638 | 710 | "Setting TX MIC Key Failed\n"); |
f078f209 LR |
711 | return 0; |
712 | } | |
713 | ||
714 | memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); | |
715 | /* XXX delete tx key on failure? */ | |
6ace2891 JM |
716 | return ath_keyset(sc, keyix + 32, hk, addr); |
717 | } | |
718 | ||
719 | static int ath_reserve_key_cache_slot_tkip(struct ath_softc *sc) | |
720 | { | |
721 | int i; | |
722 | ||
723 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 2; i++) { | |
724 | if (test_bit(i, sc->sc_keymap) || | |
725 | test_bit(i + 64, sc->sc_keymap)) | |
726 | continue; /* At least one part of TKIP key allocated */ | |
727 | if (sc->sc_splitmic && | |
728 | (test_bit(i + 32, sc->sc_keymap) || | |
729 | test_bit(i + 64 + 32, sc->sc_keymap))) | |
730 | continue; /* At least one part of TKIP key allocated */ | |
731 | ||
732 | /* Found a free slot for a TKIP key */ | |
733 | return i; | |
734 | } | |
735 | return -1; | |
736 | } | |
737 | ||
738 | static int ath_reserve_key_cache_slot(struct ath_softc *sc) | |
739 | { | |
740 | int i; | |
741 | ||
742 | /* First, try to find slots that would not be available for TKIP. */ | |
743 | if (sc->sc_splitmic) { | |
744 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 4; i++) { | |
745 | if (!test_bit(i, sc->sc_keymap) && | |
746 | (test_bit(i + 32, sc->sc_keymap) || | |
747 | test_bit(i + 64, sc->sc_keymap) || | |
748 | test_bit(i + 64 + 32, sc->sc_keymap))) | |
749 | return i; | |
750 | if (!test_bit(i + 32, sc->sc_keymap) && | |
751 | (test_bit(i, sc->sc_keymap) || | |
752 | test_bit(i + 64, sc->sc_keymap) || | |
753 | test_bit(i + 64 + 32, sc->sc_keymap))) | |
754 | return i + 32; | |
755 | if (!test_bit(i + 64, sc->sc_keymap) && | |
756 | (test_bit(i , sc->sc_keymap) || | |
757 | test_bit(i + 32, sc->sc_keymap) || | |
758 | test_bit(i + 64 + 32, sc->sc_keymap))) | |
ea612132 | 759 | return i + 64; |
6ace2891 JM |
760 | if (!test_bit(i + 64 + 32, sc->sc_keymap) && |
761 | (test_bit(i, sc->sc_keymap) || | |
762 | test_bit(i + 32, sc->sc_keymap) || | |
763 | test_bit(i + 64, sc->sc_keymap))) | |
ea612132 | 764 | return i + 64 + 32; |
6ace2891 JM |
765 | } |
766 | } else { | |
767 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax / 2; i++) { | |
768 | if (!test_bit(i, sc->sc_keymap) && | |
769 | test_bit(i + 64, sc->sc_keymap)) | |
770 | return i; | |
771 | if (test_bit(i, sc->sc_keymap) && | |
772 | !test_bit(i + 64, sc->sc_keymap)) | |
773 | return i + 64; | |
774 | } | |
775 | } | |
776 | ||
777 | /* No partially used TKIP slots, pick any available slot */ | |
778 | for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax; i++) { | |
be2864cf JM |
779 | /* Do not allow slots that could be needed for TKIP group keys |
780 | * to be used. This limitation could be removed if we know that | |
781 | * TKIP will not be used. */ | |
782 | if (i >= 64 && i < 64 + IEEE80211_WEP_NKID) | |
783 | continue; | |
784 | if (sc->sc_splitmic) { | |
785 | if (i >= 32 && i < 32 + IEEE80211_WEP_NKID) | |
786 | continue; | |
787 | if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID) | |
788 | continue; | |
789 | } | |
790 | ||
6ace2891 JM |
791 | if (!test_bit(i, sc->sc_keymap)) |
792 | return i; /* Found a free slot for a key */ | |
793 | } | |
794 | ||
795 | /* No free slot found */ | |
796 | return -1; | |
f078f209 LR |
797 | } |
798 | ||
799 | static int ath_key_config(struct ath_softc *sc, | |
800 | const u8 *addr, | |
801 | struct ieee80211_key_conf *key) | |
802 | { | |
f078f209 LR |
803 | struct ath9k_keyval hk; |
804 | const u8 *mac = NULL; | |
805 | int ret = 0; | |
6ace2891 | 806 | int idx; |
f078f209 LR |
807 | |
808 | memset(&hk, 0, sizeof(hk)); | |
809 | ||
810 | switch (key->alg) { | |
811 | case ALG_WEP: | |
812 | hk.kv_type = ATH9K_CIPHER_WEP; | |
813 | break; | |
814 | case ALG_TKIP: | |
815 | hk.kv_type = ATH9K_CIPHER_TKIP; | |
816 | break; | |
817 | case ALG_CCMP: | |
818 | hk.kv_type = ATH9K_CIPHER_AES_CCM; | |
819 | break; | |
820 | default: | |
821 | return -EINVAL; | |
822 | } | |
823 | ||
6ace2891 | 824 | hk.kv_len = key->keylen; |
f078f209 LR |
825 | memcpy(hk.kv_val, key->key, key->keylen); |
826 | ||
6ace2891 JM |
827 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
828 | /* For now, use the default keys for broadcast keys. This may | |
829 | * need to change with virtual interfaces. */ | |
830 | idx = key->keyidx; | |
831 | } else if (key->keyidx) { | |
832 | struct ieee80211_vif *vif; | |
f078f209 | 833 | |
6ace2891 JM |
834 | mac = addr; |
835 | vif = sc->sc_vaps[0]; | |
836 | if (vif->type != NL80211_IFTYPE_AP) { | |
837 | /* Only keyidx 0 should be used with unicast key, but | |
838 | * allow this for client mode for now. */ | |
839 | idx = key->keyidx; | |
840 | } else | |
841 | return -EIO; | |
f078f209 LR |
842 | } else { |
843 | mac = addr; | |
6ace2891 JM |
844 | if (key->alg == ALG_TKIP) |
845 | idx = ath_reserve_key_cache_slot_tkip(sc); | |
846 | else | |
847 | idx = ath_reserve_key_cache_slot(sc); | |
848 | if (idx < 0) | |
849 | return -EIO; /* no free key cache entries */ | |
f078f209 LR |
850 | } |
851 | ||
852 | if (key->alg == ALG_TKIP) | |
6ace2891 | 853 | ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac); |
f078f209 | 854 | else |
6ace2891 | 855 | ret = ath_keyset(sc, idx, &hk, mac); |
f078f209 LR |
856 | |
857 | if (!ret) | |
858 | return -EIO; | |
859 | ||
6ace2891 JM |
860 | set_bit(idx, sc->sc_keymap); |
861 | if (key->alg == ALG_TKIP) { | |
862 | set_bit(idx + 64, sc->sc_keymap); | |
863 | if (sc->sc_splitmic) { | |
864 | set_bit(idx + 32, sc->sc_keymap); | |
865 | set_bit(idx + 64 + 32, sc->sc_keymap); | |
866 | } | |
867 | } | |
868 | ||
869 | return idx; | |
f078f209 LR |
870 | } |
871 | ||
872 | static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key) | |
873 | { | |
6ace2891 JM |
874 | ath9k_hw_keyreset(sc->sc_ah, key->hw_key_idx); |
875 | if (key->hw_key_idx < IEEE80211_WEP_NKID) | |
876 | return; | |
877 | ||
878 | clear_bit(key->hw_key_idx, sc->sc_keymap); | |
879 | if (key->alg != ALG_TKIP) | |
880 | return; | |
f078f209 | 881 | |
6ace2891 JM |
882 | clear_bit(key->hw_key_idx + 64, sc->sc_keymap); |
883 | if (sc->sc_splitmic) { | |
884 | clear_bit(key->hw_key_idx + 32, sc->sc_keymap); | |
885 | clear_bit(key->hw_key_idx + 64 + 32, sc->sc_keymap); | |
886 | } | |
f078f209 LR |
887 | } |
888 | ||
d9fe60de | 889 | static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info) |
f078f209 | 890 | { |
60653678 S |
891 | #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */ |
892 | #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */ | |
f078f209 | 893 | |
d9fe60de JB |
894 | ht_info->ht_supported = true; |
895 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
896 | IEEE80211_HT_CAP_SM_PS | | |
897 | IEEE80211_HT_CAP_SGI_40 | | |
898 | IEEE80211_HT_CAP_DSSSCCK40; | |
f078f209 | 899 | |
60653678 S |
900 | ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536; |
901 | ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8; | |
d9fe60de JB |
902 | /* set up supported mcs set */ |
903 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
904 | ht_info->mcs.rx_mask[0] = 0xff; | |
905 | ht_info->mcs.rx_mask[1] = 0xff; | |
906 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
f078f209 LR |
907 | } |
908 | ||
8feceb67 | 909 | static void ath9k_bss_assoc_info(struct ath_softc *sc, |
5640b08e | 910 | struct ieee80211_vif *vif, |
8feceb67 | 911 | struct ieee80211_bss_conf *bss_conf) |
f078f209 | 912 | { |
5640b08e | 913 | struct ath_vap *avp = (void *)vif->drv_priv; |
f078f209 | 914 | |
8feceb67 | 915 | if (bss_conf->assoc) { |
094d05dc S |
916 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info ASSOC %d, bssid: %pM\n", |
917 | bss_conf->aid, sc->sc_curbssid); | |
f078f209 | 918 | |
8feceb67 | 919 | /* New association, store aid */ |
d97809db | 920 | if (avp->av_opmode == NL80211_IFTYPE_STATION) { |
8feceb67 VT |
921 | sc->sc_curaid = bss_conf->aid; |
922 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, | |
923 | sc->sc_curaid); | |
924 | } | |
f078f209 | 925 | |
8feceb67 VT |
926 | /* Configure the beacon */ |
927 | ath_beacon_config(sc, 0); | |
928 | sc->sc_flags |= SC_OP_BEACONS; | |
f078f209 | 929 | |
8feceb67 VT |
930 | /* Reset rssi stats */ |
931 | sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER; | |
932 | sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER; | |
933 | sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER; | |
934 | sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER; | |
f078f209 | 935 | |
6f255425 LR |
936 | /* Start ANI */ |
937 | mod_timer(&sc->sc_ani.timer, | |
938 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); | |
939 | ||
8feceb67 | 940 | } else { |
04bd4638 | 941 | DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISSOC\n"); |
8feceb67 | 942 | sc->sc_curaid = 0; |
f078f209 | 943 | } |
8feceb67 | 944 | } |
f078f209 | 945 | |
8feceb67 VT |
946 | /********************************/ |
947 | /* LED functions */ | |
948 | /********************************/ | |
f078f209 | 949 | |
8feceb67 VT |
950 | static void ath_led_brightness(struct led_classdev *led_cdev, |
951 | enum led_brightness brightness) | |
952 | { | |
953 | struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); | |
954 | struct ath_softc *sc = led->sc; | |
f078f209 | 955 | |
8feceb67 VT |
956 | switch (brightness) { |
957 | case LED_OFF: | |
958 | if (led->led_type == ATH_LED_ASSOC || | |
959 | led->led_type == ATH_LED_RADIO) | |
960 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; | |
961 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, | |
962 | (led->led_type == ATH_LED_RADIO) ? 1 : | |
963 | !!(sc->sc_flags & SC_OP_LED_ASSOCIATED)); | |
964 | break; | |
965 | case LED_FULL: | |
966 | if (led->led_type == ATH_LED_ASSOC) | |
967 | sc->sc_flags |= SC_OP_LED_ASSOCIATED; | |
968 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0); | |
969 | break; | |
970 | default: | |
971 | break; | |
f078f209 | 972 | } |
8feceb67 | 973 | } |
f078f209 | 974 | |
8feceb67 VT |
975 | static int ath_register_led(struct ath_softc *sc, struct ath_led *led, |
976 | char *trigger) | |
977 | { | |
978 | int ret; | |
f078f209 | 979 | |
8feceb67 VT |
980 | led->sc = sc; |
981 | led->led_cdev.name = led->name; | |
982 | led->led_cdev.default_trigger = trigger; | |
983 | led->led_cdev.brightness_set = ath_led_brightness; | |
f078f209 | 984 | |
8feceb67 VT |
985 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); |
986 | if (ret) | |
987 | DPRINTF(sc, ATH_DBG_FATAL, | |
988 | "Failed to register led:%s", led->name); | |
989 | else | |
990 | led->registered = 1; | |
991 | return ret; | |
992 | } | |
f078f209 | 993 | |
8feceb67 VT |
994 | static void ath_unregister_led(struct ath_led *led) |
995 | { | |
996 | if (led->registered) { | |
997 | led_classdev_unregister(&led->led_cdev); | |
998 | led->registered = 0; | |
f078f209 | 999 | } |
f078f209 LR |
1000 | } |
1001 | ||
8feceb67 | 1002 | static void ath_deinit_leds(struct ath_softc *sc) |
f078f209 | 1003 | { |
8feceb67 VT |
1004 | ath_unregister_led(&sc->assoc_led); |
1005 | sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; | |
1006 | ath_unregister_led(&sc->tx_led); | |
1007 | ath_unregister_led(&sc->rx_led); | |
1008 | ath_unregister_led(&sc->radio_led); | |
1009 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
1010 | } | |
f078f209 | 1011 | |
8feceb67 VT |
1012 | static void ath_init_leds(struct ath_softc *sc) |
1013 | { | |
1014 | char *trigger; | |
1015 | int ret; | |
f078f209 | 1016 | |
8feceb67 VT |
1017 | /* Configure gpio 1 for output */ |
1018 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, | |
1019 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
1020 | /* LED off, active low */ | |
1021 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
7dcfdcd9 | 1022 | |
8feceb67 VT |
1023 | trigger = ieee80211_get_radio_led_name(sc->hw); |
1024 | snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), | |
1025 | "ath9k-%s:radio", wiphy_name(sc->hw->wiphy)); | |
1026 | ret = ath_register_led(sc, &sc->radio_led, trigger); | |
1027 | sc->radio_led.led_type = ATH_LED_RADIO; | |
1028 | if (ret) | |
1029 | goto fail; | |
7dcfdcd9 | 1030 | |
8feceb67 VT |
1031 | trigger = ieee80211_get_assoc_led_name(sc->hw); |
1032 | snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), | |
1033 | "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy)); | |
1034 | ret = ath_register_led(sc, &sc->assoc_led, trigger); | |
1035 | sc->assoc_led.led_type = ATH_LED_ASSOC; | |
1036 | if (ret) | |
1037 | goto fail; | |
f078f209 | 1038 | |
8feceb67 VT |
1039 | trigger = ieee80211_get_tx_led_name(sc->hw); |
1040 | snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), | |
1041 | "ath9k-%s:tx", wiphy_name(sc->hw->wiphy)); | |
1042 | ret = ath_register_led(sc, &sc->tx_led, trigger); | |
1043 | sc->tx_led.led_type = ATH_LED_TX; | |
1044 | if (ret) | |
1045 | goto fail; | |
f078f209 | 1046 | |
8feceb67 VT |
1047 | trigger = ieee80211_get_rx_led_name(sc->hw); |
1048 | snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), | |
1049 | "ath9k-%s:rx", wiphy_name(sc->hw->wiphy)); | |
1050 | ret = ath_register_led(sc, &sc->rx_led, trigger); | |
1051 | sc->rx_led.led_type = ATH_LED_RX; | |
1052 | if (ret) | |
1053 | goto fail; | |
f078f209 | 1054 | |
8feceb67 VT |
1055 | return; |
1056 | ||
1057 | fail: | |
1058 | ath_deinit_leds(sc); | |
f078f209 LR |
1059 | } |
1060 | ||
e97275cb | 1061 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
9c84b797 | 1062 | |
500c064d VT |
1063 | /*******************/ |
1064 | /* Rfkill */ | |
1065 | /*******************/ | |
1066 | ||
1067 | static void ath_radio_enable(struct ath_softc *sc) | |
1068 | { | |
1069 | struct ath_hal *ah = sc->sc_ah; | |
1070 | int status; | |
1071 | ||
1072 | spin_lock_bh(&sc->sc_resetlock); | |
1073 | if (!ath9k_hw_reset(ah, ah->ah_curchan, | |
99405f93 | 1074 | sc->tx_chan_width, |
500c064d VT |
1075 | sc->sc_tx_chainmask, |
1076 | sc->sc_rx_chainmask, | |
1077 | sc->sc_ht_extprotspacing, | |
1078 | false, &status)) { | |
1079 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 S |
1080 | "Unable to reset channel %u (%uMhz) " |
1081 | "flags 0x%x hal status %u\n", | |
500c064d VT |
1082 | ath9k_hw_mhz2ieee(ah, |
1083 | ah->ah_curchan->channel, | |
1084 | ah->ah_curchan->channelFlags), | |
1085 | ah->ah_curchan->channel, | |
1086 | ah->ah_curchan->channelFlags, status); | |
1087 | } | |
1088 | spin_unlock_bh(&sc->sc_resetlock); | |
1089 | ||
1090 | ath_update_txpow(sc); | |
1091 | if (ath_startrecv(sc) != 0) { | |
1092 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1093 | "Unable to restart recv logic\n"); |
500c064d VT |
1094 | return; |
1095 | } | |
1096 | ||
1097 | if (sc->sc_flags & SC_OP_BEACONS) | |
1098 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ | |
1099 | ||
1100 | /* Re-Enable interrupts */ | |
1101 | ath9k_hw_set_interrupts(ah, sc->sc_imask); | |
1102 | ||
1103 | /* Enable LED */ | |
1104 | ath9k_hw_cfg_output(ah, ATH_LED_PIN, | |
1105 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
1106 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0); | |
1107 | ||
1108 | ieee80211_wake_queues(sc->hw); | |
1109 | } | |
1110 | ||
1111 | static void ath_radio_disable(struct ath_softc *sc) | |
1112 | { | |
1113 | struct ath_hal *ah = sc->sc_ah; | |
1114 | int status; | |
1115 | ||
1116 | ||
1117 | ieee80211_stop_queues(sc->hw); | |
1118 | ||
1119 | /* Disable LED */ | |
1120 | ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1); | |
1121 | ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN); | |
1122 | ||
1123 | /* Disable interrupts */ | |
1124 | ath9k_hw_set_interrupts(ah, 0); | |
1125 | ||
1126 | ath_draintxq(sc, false); /* clear pending tx frames */ | |
1127 | ath_stoprecv(sc); /* turn off frame recv */ | |
1128 | ath_flushrecv(sc); /* flush recv queue */ | |
1129 | ||
1130 | spin_lock_bh(&sc->sc_resetlock); | |
1131 | if (!ath9k_hw_reset(ah, ah->ah_curchan, | |
99405f93 | 1132 | sc->tx_chan_width, |
500c064d VT |
1133 | sc->sc_tx_chainmask, |
1134 | sc->sc_rx_chainmask, | |
1135 | sc->sc_ht_extprotspacing, | |
1136 | false, &status)) { | |
1137 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 S |
1138 | "Unable to reset channel %u (%uMhz) " |
1139 | "flags 0x%x hal status %u\n", | |
500c064d VT |
1140 | ath9k_hw_mhz2ieee(ah, |
1141 | ah->ah_curchan->channel, | |
1142 | ah->ah_curchan->channelFlags), | |
1143 | ah->ah_curchan->channel, | |
1144 | ah->ah_curchan->channelFlags, status); | |
1145 | } | |
1146 | spin_unlock_bh(&sc->sc_resetlock); | |
1147 | ||
1148 | ath9k_hw_phy_disable(ah); | |
1149 | ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP); | |
1150 | } | |
1151 | ||
1152 | static bool ath_is_rfkill_set(struct ath_softc *sc) | |
1153 | { | |
1154 | struct ath_hal *ah = sc->sc_ah; | |
1155 | ||
1156 | return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) == | |
1157 | ah->ah_rfkill_polarity; | |
1158 | } | |
1159 | ||
1160 | /* h/w rfkill poll function */ | |
1161 | static void ath_rfkill_poll(struct work_struct *work) | |
1162 | { | |
1163 | struct ath_softc *sc = container_of(work, struct ath_softc, | |
1164 | rf_kill.rfkill_poll.work); | |
1165 | bool radio_on; | |
1166 | ||
1167 | if (sc->sc_flags & SC_OP_INVALID) | |
1168 | return; | |
1169 | ||
1170 | radio_on = !ath_is_rfkill_set(sc); | |
1171 | ||
1172 | /* | |
1173 | * enable/disable radio only when there is a | |
1174 | * state change in RF switch | |
1175 | */ | |
1176 | if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) { | |
1177 | enum rfkill_state state; | |
1178 | ||
1179 | if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) { | |
1180 | state = radio_on ? RFKILL_STATE_SOFT_BLOCKED | |
1181 | : RFKILL_STATE_HARD_BLOCKED; | |
1182 | } else if (radio_on) { | |
1183 | ath_radio_enable(sc); | |
1184 | state = RFKILL_STATE_UNBLOCKED; | |
1185 | } else { | |
1186 | ath_radio_disable(sc); | |
1187 | state = RFKILL_STATE_HARD_BLOCKED; | |
1188 | } | |
1189 | ||
1190 | if (state == RFKILL_STATE_HARD_BLOCKED) | |
1191 | sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED; | |
1192 | else | |
1193 | sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED; | |
1194 | ||
1195 | rfkill_force_state(sc->rf_kill.rfkill, state); | |
1196 | } | |
1197 | ||
1198 | queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll, | |
1199 | msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL)); | |
1200 | } | |
1201 | ||
1202 | /* s/w rfkill handler */ | |
1203 | static int ath_sw_toggle_radio(void *data, enum rfkill_state state) | |
1204 | { | |
1205 | struct ath_softc *sc = data; | |
1206 | ||
1207 | switch (state) { | |
1208 | case RFKILL_STATE_SOFT_BLOCKED: | |
1209 | if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED | | |
1210 | SC_OP_RFKILL_SW_BLOCKED))) | |
1211 | ath_radio_disable(sc); | |
1212 | sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED; | |
1213 | return 0; | |
1214 | case RFKILL_STATE_UNBLOCKED: | |
1215 | if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) { | |
1216 | sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED; | |
1217 | if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) { | |
1218 | DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the" | |
04bd4638 | 1219 | "radio as it is disabled by h/w\n"); |
500c064d VT |
1220 | return -EPERM; |
1221 | } | |
1222 | ath_radio_enable(sc); | |
1223 | } | |
1224 | return 0; | |
1225 | default: | |
1226 | return -EINVAL; | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | /* Init s/w rfkill */ | |
1231 | static int ath_init_sw_rfkill(struct ath_softc *sc) | |
1232 | { | |
1233 | sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy), | |
1234 | RFKILL_TYPE_WLAN); | |
1235 | if (!sc->rf_kill.rfkill) { | |
1236 | DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n"); | |
1237 | return -ENOMEM; | |
1238 | } | |
1239 | ||
1240 | snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name), | |
1241 | "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy)); | |
1242 | sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name; | |
1243 | sc->rf_kill.rfkill->data = sc; | |
1244 | sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio; | |
1245 | sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED; | |
1246 | sc->rf_kill.rfkill->user_claim_unsupported = 1; | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | /* Deinitialize rfkill */ | |
1252 | static void ath_deinit_rfkill(struct ath_softc *sc) | |
1253 | { | |
1254 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
1255 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); | |
1256 | ||
1257 | if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) { | |
1258 | rfkill_unregister(sc->rf_kill.rfkill); | |
1259 | sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED; | |
1260 | sc->rf_kill.rfkill = NULL; | |
1261 | } | |
1262 | } | |
9c84b797 S |
1263 | |
1264 | static int ath_start_rfkill_poll(struct ath_softc *sc) | |
1265 | { | |
1266 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
1267 | queue_delayed_work(sc->hw->workqueue, | |
1268 | &sc->rf_kill.rfkill_poll, 0); | |
1269 | ||
1270 | if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) { | |
1271 | if (rfkill_register(sc->rf_kill.rfkill)) { | |
1272 | DPRINTF(sc, ATH_DBG_FATAL, | |
1273 | "Unable to register rfkill\n"); | |
1274 | rfkill_free(sc->rf_kill.rfkill); | |
1275 | ||
1276 | /* Deinitialize the device */ | |
306efdd1 | 1277 | ath_detach(sc); |
9c84b797 S |
1278 | if (sc->pdev->irq) |
1279 | free_irq(sc->pdev->irq, sc); | |
9c84b797 S |
1280 | pci_iounmap(sc->pdev, sc->mem); |
1281 | pci_release_region(sc->pdev, 0); | |
1282 | pci_disable_device(sc->pdev); | |
9757d556 | 1283 | ieee80211_free_hw(sc->hw); |
9c84b797 S |
1284 | return -EIO; |
1285 | } else { | |
1286 | sc->sc_flags |= SC_OP_RFKILL_REGISTERED; | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | return 0; | |
1291 | } | |
500c064d VT |
1292 | #endif /* CONFIG_RFKILL */ |
1293 | ||
9c84b797 | 1294 | static void ath_detach(struct ath_softc *sc) |
f078f209 | 1295 | { |
8feceb67 | 1296 | struct ieee80211_hw *hw = sc->hw; |
9c84b797 | 1297 | int i = 0; |
f078f209 | 1298 | |
04bd4638 | 1299 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n"); |
f078f209 | 1300 | |
e97275cb | 1301 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d VT |
1302 | ath_deinit_rfkill(sc); |
1303 | #endif | |
3fcdfb4b VT |
1304 | ath_deinit_leds(sc); |
1305 | ||
1306 | ieee80211_unregister_hw(hw); | |
8feceb67 VT |
1307 | ath_rx_cleanup(sc); |
1308 | ath_tx_cleanup(sc); | |
f078f209 | 1309 | |
9c84b797 S |
1310 | tasklet_kill(&sc->intr_tq); |
1311 | tasklet_kill(&sc->bcon_tasklet); | |
f078f209 | 1312 | |
9c84b797 S |
1313 | if (!(sc->sc_flags & SC_OP_INVALID)) |
1314 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); | |
8feceb67 | 1315 | |
9c84b797 S |
1316 | /* cleanup tx queues */ |
1317 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1318 | if (ATH_TXQ_SETUP(sc, i)) | |
b77f483f | 1319 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
9c84b797 S |
1320 | |
1321 | ath9k_hw_detach(sc->sc_ah); | |
826d2680 | 1322 | ath9k_exit_debug(sc); |
f078f209 LR |
1323 | } |
1324 | ||
ff37e337 S |
1325 | static int ath_init(u16 devid, struct ath_softc *sc) |
1326 | { | |
1327 | struct ath_hal *ah = NULL; | |
1328 | int status; | |
1329 | int error = 0, i; | |
1330 | int csz = 0; | |
1331 | ||
1332 | /* XXX: hardware will not be ready until ath_open() being called */ | |
1333 | sc->sc_flags |= SC_OP_INVALID; | |
88b126af | 1334 | |
826d2680 S |
1335 | if (ath9k_init_debug(sc) < 0) |
1336 | printk(KERN_ERR "Unable to create debugfs files\n"); | |
ff37e337 S |
1337 | |
1338 | spin_lock_init(&sc->sc_resetlock); | |
aa33de09 | 1339 | mutex_init(&sc->mutex); |
ff37e337 S |
1340 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); |
1341 | tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, | |
1342 | (unsigned long)sc); | |
1343 | ||
1344 | /* | |
1345 | * Cache line size is used to size and align various | |
1346 | * structures used to communicate with the hardware. | |
1347 | */ | |
1348 | bus_read_cachesize(sc, &csz); | |
1349 | /* XXX assert csz is non-zero */ | |
1350 | sc->sc_cachelsz = csz << 2; /* convert to bytes */ | |
1351 | ||
1352 | ah = ath9k_hw_attach(devid, sc, sc->mem, &status); | |
1353 | if (ah == NULL) { | |
1354 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1355 | "Unable to attach hardware; HAL status %u\n", status); |
ff37e337 S |
1356 | error = -ENXIO; |
1357 | goto bad; | |
1358 | } | |
1359 | sc->sc_ah = ah; | |
1360 | ||
1361 | /* Get the hardware key cache size. */ | |
1362 | sc->sc_keymax = ah->ah_caps.keycache_size; | |
1363 | if (sc->sc_keymax > ATH_KEYMAX) { | |
1364 | DPRINTF(sc, ATH_DBG_KEYCACHE, | |
04bd4638 S |
1365 | "Warning, using only %u entries in %u key cache\n", |
1366 | ATH_KEYMAX, sc->sc_keymax); | |
ff37e337 S |
1367 | sc->sc_keymax = ATH_KEYMAX; |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | * Reset the key cache since some parts do not | |
1372 | * reset the contents on initial power up. | |
1373 | */ | |
1374 | for (i = 0; i < sc->sc_keymax; i++) | |
1375 | ath9k_hw_keyreset(ah, (u16) i); | |
ff37e337 S |
1376 | |
1377 | /* Collect the channel list using the default country code */ | |
1378 | ||
1379 | error = ath_setup_channels(sc); | |
1380 | if (error) | |
1381 | goto bad; | |
1382 | ||
1383 | /* default to MONITOR mode */ | |
d97809db CM |
1384 | sc->sc_ah->ah_opmode = NL80211_IFTYPE_MONITOR; |
1385 | ||
ff37e337 S |
1386 | |
1387 | /* Setup rate tables */ | |
1388 | ||
1389 | ath_rate_attach(sc); | |
1390 | ath_setup_rates(sc, IEEE80211_BAND_2GHZ); | |
1391 | ath_setup_rates(sc, IEEE80211_BAND_5GHZ); | |
1392 | ||
1393 | /* | |
1394 | * Allocate hardware transmit queues: one queue for | |
1395 | * beacon frames and one data queue for each QoS | |
1396 | * priority. Note that the hal handles reseting | |
1397 | * these queues at the needed time. | |
1398 | */ | |
b77f483f S |
1399 | sc->beacon.beaconq = ath_beaconq_setup(ah); |
1400 | if (sc->beacon.beaconq == -1) { | |
ff37e337 | 1401 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1402 | "Unable to setup a beacon xmit queue\n"); |
ff37e337 S |
1403 | error = -EIO; |
1404 | goto bad2; | |
1405 | } | |
b77f483f S |
1406 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
1407 | if (sc->beacon.cabq == NULL) { | |
ff37e337 | 1408 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1409 | "Unable to setup CAB xmit queue\n"); |
ff37e337 S |
1410 | error = -EIO; |
1411 | goto bad2; | |
1412 | } | |
1413 | ||
1414 | sc->sc_config.cabqReadytime = ATH_CABQ_READY_TIME; | |
1415 | ath_cabq_update(sc); | |
1416 | ||
b77f483f S |
1417 | for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++) |
1418 | sc->tx.hwq_map[i] = -1; | |
ff37e337 S |
1419 | |
1420 | /* Setup data queues */ | |
1421 | /* NB: ensure BK queue is the lowest priority h/w queue */ | |
1422 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) { | |
1423 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1424 | "Unable to setup xmit queue for BK traffic\n"); |
ff37e337 S |
1425 | error = -EIO; |
1426 | goto bad2; | |
1427 | } | |
1428 | ||
1429 | if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) { | |
1430 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1431 | "Unable to setup xmit queue for BE traffic\n"); |
ff37e337 S |
1432 | error = -EIO; |
1433 | goto bad2; | |
1434 | } | |
1435 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) { | |
1436 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1437 | "Unable to setup xmit queue for VI traffic\n"); |
ff37e337 S |
1438 | error = -EIO; |
1439 | goto bad2; | |
1440 | } | |
1441 | if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) { | |
1442 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1443 | "Unable to setup xmit queue for VO traffic\n"); |
ff37e337 S |
1444 | error = -EIO; |
1445 | goto bad2; | |
1446 | } | |
1447 | ||
1448 | /* Initializes the noise floor to a reasonable default value. | |
1449 | * Later on this will be updated during ANI processing. */ | |
1450 | ||
1451 | sc->sc_ani.sc_noise_floor = ATH_DEFAULT_NOISE_FLOOR; | |
1452 | setup_timer(&sc->sc_ani.timer, ath_ani_calibrate, (unsigned long)sc); | |
1453 | ||
1454 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1455 | ATH9K_CIPHER_TKIP, NULL)) { | |
1456 | /* | |
1457 | * Whether we should enable h/w TKIP MIC. | |
1458 | * XXX: if we don't support WME TKIP MIC, then we wouldn't | |
1459 | * report WMM capable, so it's always safe to turn on | |
1460 | * TKIP MIC in this case. | |
1461 | */ | |
1462 | ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC, | |
1463 | 0, 1, NULL); | |
1464 | } | |
1465 | ||
1466 | /* | |
1467 | * Check whether the separate key cache entries | |
1468 | * are required to handle both tx+rx MIC keys. | |
1469 | * With split mic keys the number of stations is limited | |
1470 | * to 27 otherwise 59. | |
1471 | */ | |
1472 | if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1473 | ATH9K_CIPHER_TKIP, NULL) | |
1474 | && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, | |
1475 | ATH9K_CIPHER_MIC, NULL) | |
1476 | && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT, | |
1477 | 0, NULL)) | |
1478 | sc->sc_splitmic = 1; | |
1479 | ||
1480 | /* turn on mcast key search if possible */ | |
1481 | if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL)) | |
1482 | (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1, | |
1483 | 1, NULL); | |
1484 | ||
1485 | sc->sc_config.txpowlimit = ATH_TXPOWER_MAX; | |
1486 | sc->sc_config.txpowlimit_override = 0; | |
1487 | ||
1488 | /* 11n Capabilities */ | |
1489 | if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) { | |
1490 | sc->sc_flags |= SC_OP_TXAGGR; | |
1491 | sc->sc_flags |= SC_OP_RXAGGR; | |
1492 | } | |
1493 | ||
1494 | sc->sc_tx_chainmask = ah->ah_caps.tx_chainmask; | |
1495 | sc->sc_rx_chainmask = ah->ah_caps.rx_chainmask; | |
1496 | ||
1497 | ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL); | |
b77f483f | 1498 | sc->rx.defant = ath9k_hw_getdefantenna(ah); |
ff37e337 S |
1499 | |
1500 | ath9k_hw_getmac(ah, sc->sc_myaddr); | |
1501 | if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) { | |
1502 | ath9k_hw_getbssidmask(ah, sc->sc_bssidmask); | |
1503 | ATH_SET_VAP_BSSID_MASK(sc->sc_bssidmask); | |
1504 | ath9k_hw_setbssidmask(ah, sc->sc_bssidmask); | |
1505 | } | |
1506 | ||
b77f483f | 1507 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */ |
ff37e337 S |
1508 | |
1509 | /* initialize beacon slots */ | |
b77f483f S |
1510 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) |
1511 | sc->beacon.bslot[i] = ATH_IF_ID_ANY; | |
ff37e337 S |
1512 | |
1513 | /* save MISC configurations */ | |
1514 | sc->sc_config.swBeaconProcess = 1; | |
1515 | ||
ff37e337 S |
1516 | /* setup channels and rates */ |
1517 | ||
1518 | sc->sbands[IEEE80211_BAND_2GHZ].channels = | |
1519 | sc->channels[IEEE80211_BAND_2GHZ]; | |
1520 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = | |
1521 | sc->rates[IEEE80211_BAND_2GHZ]; | |
1522 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; | |
1523 | ||
1524 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) { | |
1525 | sc->sbands[IEEE80211_BAND_5GHZ].channels = | |
1526 | sc->channels[IEEE80211_BAND_5GHZ]; | |
1527 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = | |
1528 | sc->rates[IEEE80211_BAND_5GHZ]; | |
1529 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; | |
1530 | } | |
1531 | ||
1532 | return 0; | |
1533 | bad2: | |
1534 | /* cleanup tx queues */ | |
1535 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1536 | if (ATH_TXQ_SETUP(sc, i)) | |
b77f483f | 1537 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); |
ff37e337 S |
1538 | bad: |
1539 | if (ah) | |
1540 | ath9k_hw_detach(ah); | |
40b130a9 | 1541 | ath9k_exit_debug(sc); |
ff37e337 S |
1542 | |
1543 | return error; | |
1544 | } | |
1545 | ||
9c84b797 | 1546 | static int ath_attach(u16 devid, struct ath_softc *sc) |
f078f209 | 1547 | { |
8feceb67 | 1548 | struct ieee80211_hw *hw = sc->hw; |
40b130a9 | 1549 | int error = 0, i; |
f078f209 | 1550 | |
04bd4638 | 1551 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n"); |
f078f209 | 1552 | |
8feceb67 VT |
1553 | error = ath_init(devid, sc); |
1554 | if (error != 0) | |
1555 | return error; | |
f078f209 | 1556 | |
8feceb67 | 1557 | /* get mac address from hardware and set in mac80211 */ |
f078f209 | 1558 | |
8feceb67 | 1559 | SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr); |
f078f209 | 1560 | |
9c84b797 S |
1561 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
1562 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
1563 | IEEE80211_HW_SIGNAL_DBM | | |
1564 | IEEE80211_HW_AMPDU_AGGREGATION; | |
f078f209 | 1565 | |
9c84b797 S |
1566 | hw->wiphy->interface_modes = |
1567 | BIT(NL80211_IFTYPE_AP) | | |
1568 | BIT(NL80211_IFTYPE_STATION) | | |
1569 | BIT(NL80211_IFTYPE_ADHOC); | |
f078f209 | 1570 | |
8feceb67 | 1571 | hw->queues = 4; |
e63835b0 S |
1572 | hw->max_rates = 4; |
1573 | hw->max_rate_tries = ATH_11N_TXMAXTRY; | |
528f0c6b | 1574 | hw->sta_data_size = sizeof(struct ath_node); |
5640b08e | 1575 | hw->vif_data_size = sizeof(struct ath_vap); |
f078f209 | 1576 | |
8feceb67 | 1577 | hw->rate_control_algorithm = "ath9k_rate_control"; |
f078f209 | 1578 | |
9c84b797 S |
1579 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) { |
1580 | setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); | |
1581 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) | |
1582 | setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); | |
1583 | } | |
1584 | ||
1585 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ]; | |
1586 | if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) | |
1587 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
1588 | &sc->sbands[IEEE80211_BAND_5GHZ]; | |
1589 | ||
db93e7b5 SB |
1590 | /* initialize tx/rx engine */ |
1591 | error = ath_tx_init(sc, ATH_TXBUF); | |
1592 | if (error != 0) | |
40b130a9 | 1593 | goto error_attach; |
8feceb67 | 1594 | |
db93e7b5 SB |
1595 | error = ath_rx_init(sc, ATH_RXBUF); |
1596 | if (error != 0) | |
40b130a9 | 1597 | goto error_attach; |
8feceb67 | 1598 | |
e97275cb | 1599 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d VT |
1600 | /* Initialze h/w Rfkill */ |
1601 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
1602 | INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); | |
1603 | ||
1604 | /* Initialize s/w rfkill */ | |
40b130a9 VT |
1605 | error = ath_init_sw_rfkill(sc); |
1606 | if (error) | |
1607 | goto error_attach; | |
500c064d VT |
1608 | #endif |
1609 | ||
db93e7b5 | 1610 | error = ieee80211_register_hw(hw); |
8feceb67 | 1611 | |
db93e7b5 SB |
1612 | /* Initialize LED control */ |
1613 | ath_init_leds(sc); | |
8feceb67 VT |
1614 | |
1615 | return 0; | |
40b130a9 VT |
1616 | |
1617 | error_attach: | |
1618 | /* cleanup tx queues */ | |
1619 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
1620 | if (ATH_TXQ_SETUP(sc, i)) | |
1621 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
1622 | ||
1623 | ath9k_hw_detach(sc->sc_ah); | |
1624 | ath9k_exit_debug(sc); | |
1625 | ||
8feceb67 | 1626 | return error; |
f078f209 LR |
1627 | } |
1628 | ||
ff37e337 S |
1629 | int ath_reset(struct ath_softc *sc, bool retry_tx) |
1630 | { | |
1631 | struct ath_hal *ah = sc->sc_ah; | |
1632 | int status; | |
1633 | int error = 0; | |
1634 | ||
1635 | ath9k_hw_set_interrupts(ah, 0); | |
1636 | ath_draintxq(sc, retry_tx); | |
1637 | ath_stoprecv(sc); | |
1638 | ath_flushrecv(sc); | |
1639 | ||
1640 | spin_lock_bh(&sc->sc_resetlock); | |
1641 | if (!ath9k_hw_reset(ah, sc->sc_ah->ah_curchan, | |
99405f93 | 1642 | sc->tx_chan_width, |
ff37e337 S |
1643 | sc->sc_tx_chainmask, sc->sc_rx_chainmask, |
1644 | sc->sc_ht_extprotspacing, false, &status)) { | |
1645 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 1646 | "Unable to reset hardware; hal status %u\n", status); |
ff37e337 S |
1647 | error = -EIO; |
1648 | } | |
1649 | spin_unlock_bh(&sc->sc_resetlock); | |
1650 | ||
1651 | if (ath_startrecv(sc) != 0) | |
04bd4638 | 1652 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n"); |
ff37e337 S |
1653 | |
1654 | /* | |
1655 | * We may be doing a reset in response to a request | |
1656 | * that changes the channel so update any state that | |
1657 | * might change as a result. | |
1658 | */ | |
1659 | ath_setcurmode(sc, ath_chan2mode(sc->sc_ah->ah_curchan)); | |
1660 | ||
1661 | ath_update_txpow(sc); | |
1662 | ||
1663 | if (sc->sc_flags & SC_OP_BEACONS) | |
1664 | ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ | |
1665 | ||
1666 | ath9k_hw_set_interrupts(ah, sc->sc_imask); | |
1667 | ||
1668 | if (retry_tx) { | |
1669 | int i; | |
1670 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { | |
1671 | if (ATH_TXQ_SETUP(sc, i)) { | |
b77f483f S |
1672 | spin_lock_bh(&sc->tx.txq[i].axq_lock); |
1673 | ath_txq_schedule(sc, &sc->tx.txq[i]); | |
1674 | spin_unlock_bh(&sc->tx.txq[i].axq_lock); | |
ff37e337 S |
1675 | } |
1676 | } | |
1677 | } | |
1678 | ||
1679 | return error; | |
1680 | } | |
1681 | ||
1682 | /* | |
1683 | * This function will allocate both the DMA descriptor structure, and the | |
1684 | * buffers it contains. These are used to contain the descriptors used | |
1685 | * by the system. | |
1686 | */ | |
1687 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, | |
1688 | struct list_head *head, const char *name, | |
1689 | int nbuf, int ndesc) | |
1690 | { | |
1691 | #define DS2PHYS(_dd, _ds) \ | |
1692 | ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) | |
1693 | #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) | |
1694 | #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) | |
1695 | ||
1696 | struct ath_desc *ds; | |
1697 | struct ath_buf *bf; | |
1698 | int i, bsize, error; | |
1699 | ||
04bd4638 S |
1700 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", |
1701 | name, nbuf, ndesc); | |
ff37e337 S |
1702 | |
1703 | /* ath_desc must be a multiple of DWORDs */ | |
1704 | if ((sizeof(struct ath_desc) % 4) != 0) { | |
04bd4638 | 1705 | DPRINTF(sc, ATH_DBG_FATAL, "ath_desc not DWORD aligned\n"); |
ff37e337 S |
1706 | ASSERT((sizeof(struct ath_desc) % 4) == 0); |
1707 | error = -ENOMEM; | |
1708 | goto fail; | |
1709 | } | |
1710 | ||
1711 | dd->dd_name = name; | |
1712 | dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc; | |
1713 | ||
1714 | /* | |
1715 | * Need additional DMA memory because we can't use | |
1716 | * descriptors that cross the 4K page boundary. Assume | |
1717 | * one skipped descriptor per 4K page. | |
1718 | */ | |
1719 | if (!(sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
1720 | u32 ndesc_skipped = | |
1721 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); | |
1722 | u32 dma_len; | |
1723 | ||
1724 | while (ndesc_skipped) { | |
1725 | dma_len = ndesc_skipped * sizeof(struct ath_desc); | |
1726 | dd->dd_desc_len += dma_len; | |
1727 | ||
1728 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); | |
1729 | }; | |
1730 | } | |
1731 | ||
1732 | /* allocate descriptors */ | |
1733 | dd->dd_desc = pci_alloc_consistent(sc->pdev, | |
1734 | dd->dd_desc_len, | |
1735 | &dd->dd_desc_paddr); | |
1736 | if (dd->dd_desc == NULL) { | |
1737 | error = -ENOMEM; | |
1738 | goto fail; | |
1739 | } | |
1740 | ds = dd->dd_desc; | |
04bd4638 S |
1741 | DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
1742 | dd->dd_name, ds, (u32) dd->dd_desc_len, | |
ff37e337 S |
1743 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); |
1744 | ||
1745 | /* allocate buffers */ | |
1746 | bsize = sizeof(struct ath_buf) * nbuf; | |
1747 | bf = kmalloc(bsize, GFP_KERNEL); | |
1748 | if (bf == NULL) { | |
1749 | error = -ENOMEM; | |
1750 | goto fail2; | |
1751 | } | |
1752 | memset(bf, 0, bsize); | |
1753 | dd->dd_bufptr = bf; | |
1754 | ||
1755 | INIT_LIST_HEAD(head); | |
1756 | for (i = 0; i < nbuf; i++, bf++, ds += ndesc) { | |
1757 | bf->bf_desc = ds; | |
1758 | bf->bf_daddr = DS2PHYS(dd, ds); | |
1759 | ||
1760 | if (!(sc->sc_ah->ah_caps.hw_caps & | |
1761 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
1762 | /* | |
1763 | * Skip descriptor addresses which can cause 4KB | |
1764 | * boundary crossing (addr + length) with a 32 dword | |
1765 | * descriptor fetch. | |
1766 | */ | |
1767 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { | |
1768 | ASSERT((caddr_t) bf->bf_desc < | |
1769 | ((caddr_t) dd->dd_desc + | |
1770 | dd->dd_desc_len)); | |
1771 | ||
1772 | ds += ndesc; | |
1773 | bf->bf_desc = ds; | |
1774 | bf->bf_daddr = DS2PHYS(dd, ds); | |
1775 | } | |
1776 | } | |
1777 | list_add_tail(&bf->list, head); | |
1778 | } | |
1779 | return 0; | |
1780 | fail2: | |
1781 | pci_free_consistent(sc->pdev, | |
1782 | dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr); | |
1783 | fail: | |
1784 | memset(dd, 0, sizeof(*dd)); | |
1785 | return error; | |
1786 | #undef ATH_DESC_4KB_BOUND_CHECK | |
1787 | #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED | |
1788 | #undef DS2PHYS | |
1789 | } | |
1790 | ||
1791 | void ath_descdma_cleanup(struct ath_softc *sc, | |
1792 | struct ath_descdma *dd, | |
1793 | struct list_head *head) | |
1794 | { | |
1795 | pci_free_consistent(sc->pdev, | |
1796 | dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr); | |
1797 | ||
1798 | INIT_LIST_HEAD(head); | |
1799 | kfree(dd->dd_bufptr); | |
1800 | memset(dd, 0, sizeof(*dd)); | |
1801 | } | |
1802 | ||
1803 | int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) | |
1804 | { | |
1805 | int qnum; | |
1806 | ||
1807 | switch (queue) { | |
1808 | case 0: | |
b77f483f | 1809 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO]; |
ff37e337 S |
1810 | break; |
1811 | case 1: | |
b77f483f | 1812 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI]; |
ff37e337 S |
1813 | break; |
1814 | case 2: | |
b77f483f | 1815 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1816 | break; |
1817 | case 3: | |
b77f483f | 1818 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK]; |
ff37e337 S |
1819 | break; |
1820 | default: | |
b77f483f | 1821 | qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; |
ff37e337 S |
1822 | break; |
1823 | } | |
1824 | ||
1825 | return qnum; | |
1826 | } | |
1827 | ||
1828 | int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) | |
1829 | { | |
1830 | int qnum; | |
1831 | ||
1832 | switch (queue) { | |
1833 | case ATH9K_WME_AC_VO: | |
1834 | qnum = 0; | |
1835 | break; | |
1836 | case ATH9K_WME_AC_VI: | |
1837 | qnum = 1; | |
1838 | break; | |
1839 | case ATH9K_WME_AC_BE: | |
1840 | qnum = 2; | |
1841 | break; | |
1842 | case ATH9K_WME_AC_BK: | |
1843 | qnum = 3; | |
1844 | break; | |
1845 | default: | |
1846 | qnum = -1; | |
1847 | break; | |
1848 | } | |
1849 | ||
1850 | return qnum; | |
1851 | } | |
1852 | ||
1853 | /**********************/ | |
1854 | /* mac80211 callbacks */ | |
1855 | /**********************/ | |
1856 | ||
8feceb67 | 1857 | static int ath9k_start(struct ieee80211_hw *hw) |
f078f209 LR |
1858 | { |
1859 | struct ath_softc *sc = hw->priv; | |
8feceb67 | 1860 | struct ieee80211_channel *curchan = hw->conf.channel; |
ff37e337 S |
1861 | struct ath9k_channel *init_channel; |
1862 | int error = 0, pos, status; | |
f078f209 | 1863 | |
04bd4638 S |
1864 | DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with " |
1865 | "initial channel: %d MHz\n", curchan->center_freq); | |
f078f209 | 1866 | |
8feceb67 | 1867 | /* setup initial channel */ |
f078f209 | 1868 | |
8feceb67 VT |
1869 | pos = ath_get_channel(sc, curchan); |
1870 | if (pos == -1) { | |
04bd4638 | 1871 | DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n", curchan->center_freq); |
9c84b797 | 1872 | error = -EINVAL; |
ff37e337 | 1873 | goto error; |
f078f209 LR |
1874 | } |
1875 | ||
99405f93 | 1876 | sc->tx_chan_width = ATH9K_HT_MACMODE_20; |
8feceb67 VT |
1877 | sc->sc_ah->ah_channels[pos].chanmode = |
1878 | (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A; | |
ff37e337 S |
1879 | init_channel = &sc->sc_ah->ah_channels[pos]; |
1880 | ||
1881 | /* Reset SERDES registers */ | |
1882 | ath9k_hw_configpcipowersave(sc->sc_ah, 0); | |
1883 | ||
1884 | /* | |
1885 | * The basic interface to setting the hardware in a good | |
1886 | * state is ``reset''. On return the hardware is known to | |
1887 | * be powered up and with interrupts disabled. This must | |
1888 | * be followed by initialization of the appropriate bits | |
1889 | * and then setup of the interrupt mask. | |
1890 | */ | |
1891 | spin_lock_bh(&sc->sc_resetlock); | |
1892 | if (!ath9k_hw_reset(sc->sc_ah, init_channel, | |
99405f93 | 1893 | sc->tx_chan_width, |
ff37e337 S |
1894 | sc->sc_tx_chainmask, sc->sc_rx_chainmask, |
1895 | sc->sc_ht_extprotspacing, false, &status)) { | |
1896 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 S |
1897 | "Unable to reset hardware; hal status %u " |
1898 | "(freq %u flags 0x%x)\n", status, | |
ff37e337 S |
1899 | init_channel->channel, init_channel->channelFlags); |
1900 | error = -EIO; | |
1901 | spin_unlock_bh(&sc->sc_resetlock); | |
1902 | goto error; | |
1903 | } | |
1904 | spin_unlock_bh(&sc->sc_resetlock); | |
1905 | ||
1906 | /* | |
1907 | * This is needed only to setup initial state | |
1908 | * but it's best done after a reset. | |
1909 | */ | |
1910 | ath_update_txpow(sc); | |
8feceb67 | 1911 | |
ff37e337 S |
1912 | /* |
1913 | * Setup the hardware after reset: | |
1914 | * The receive engine is set going. | |
1915 | * Frame transmit is handled entirely | |
1916 | * in the frame output path; there's nothing to do | |
1917 | * here except setup the interrupt mask. | |
1918 | */ | |
1919 | if (ath_startrecv(sc) != 0) { | |
8feceb67 | 1920 | DPRINTF(sc, ATH_DBG_FATAL, |
04bd4638 | 1921 | "Unable to start recv logic\n"); |
ff37e337 S |
1922 | error = -EIO; |
1923 | goto error; | |
f078f209 | 1924 | } |
8feceb67 | 1925 | |
ff37e337 S |
1926 | /* Setup our intr mask. */ |
1927 | sc->sc_imask = ATH9K_INT_RX | ATH9K_INT_TX | |
1928 | | ATH9K_INT_RXEOL | ATH9K_INT_RXORN | |
1929 | | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL; | |
1930 | ||
1931 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_GTT) | |
1932 | sc->sc_imask |= ATH9K_INT_GTT; | |
1933 | ||
1934 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) | |
1935 | sc->sc_imask |= ATH9K_INT_CST; | |
1936 | ||
1937 | /* | |
1938 | * Enable MIB interrupts when there are hardware phy counters. | |
1939 | * Note we only do this (at the moment) for station mode. | |
1940 | */ | |
1941 | if (ath9k_hw_phycounters(sc->sc_ah) && | |
d97809db CM |
1942 | ((sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) || |
1943 | (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC))) | |
ff37e337 S |
1944 | sc->sc_imask |= ATH9K_INT_MIB; |
1945 | /* | |
1946 | * Some hardware processes the TIM IE and fires an | |
1947 | * interrupt when the TIM bit is set. For hardware | |
1948 | * that does, if not overridden by configuration, | |
1949 | * enable the TIM interrupt when operating as station. | |
1950 | */ | |
1951 | if ((sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) && | |
d97809db | 1952 | (sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) && |
ff37e337 S |
1953 | !sc->sc_config.swBeaconProcess) |
1954 | sc->sc_imask |= ATH9K_INT_TIM; | |
1955 | ||
1956 | ath_setcurmode(sc, ath_chan2mode(init_channel)); | |
1957 | ||
1958 | sc->sc_flags &= ~SC_OP_INVALID; | |
1959 | ||
1960 | /* Disable BMISS interrupt when we're not associated */ | |
1961 | sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); | |
1962 | ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask); | |
1963 | ||
1964 | ieee80211_wake_queues(sc->hw); | |
1965 | ||
e97275cb | 1966 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
9c84b797 | 1967 | error = ath_start_rfkill_poll(sc); |
500c064d VT |
1968 | #endif |
1969 | ||
ff37e337 | 1970 | error: |
9c84b797 | 1971 | return error; |
f078f209 LR |
1972 | } |
1973 | ||
8feceb67 VT |
1974 | static int ath9k_tx(struct ieee80211_hw *hw, |
1975 | struct sk_buff *skb) | |
f078f209 | 1976 | { |
528f0c6b | 1977 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f078f209 | 1978 | struct ath_softc *sc = hw->priv; |
528f0c6b | 1979 | struct ath_tx_control txctl; |
8feceb67 | 1980 | int hdrlen, padsize; |
528f0c6b S |
1981 | |
1982 | memset(&txctl, 0, sizeof(struct ath_tx_control)); | |
f078f209 | 1983 | |
8feceb67 VT |
1984 | /* |
1985 | * As a temporary workaround, assign seq# here; this will likely need | |
1986 | * to be cleaned up to work better with Beacon transmission and virtual | |
1987 | * BSSes. | |
1988 | */ | |
1989 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1990 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1991 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) | |
b77f483f | 1992 | sc->tx.seq_no += 0x10; |
8feceb67 | 1993 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
b77f483f | 1994 | hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); |
8feceb67 | 1995 | } |
f078f209 | 1996 | |
8feceb67 VT |
1997 | /* Add the padding after the header if this is not already done */ |
1998 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1999 | if (hdrlen & 3) { | |
2000 | padsize = hdrlen % 4; | |
2001 | if (skb_headroom(skb) < padsize) | |
2002 | return -1; | |
2003 | skb_push(skb, padsize); | |
2004 | memmove(skb->data, skb->data + padsize, hdrlen); | |
2005 | } | |
2006 | ||
528f0c6b S |
2007 | /* Check if a tx queue is available */ |
2008 | ||
2009 | txctl.txq = ath_test_get_txq(sc, skb); | |
2010 | if (!txctl.txq) | |
2011 | goto exit; | |
2012 | ||
04bd4638 | 2013 | DPRINTF(sc, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb); |
8feceb67 | 2014 | |
528f0c6b | 2015 | if (ath_tx_start(sc, skb, &txctl) != 0) { |
04bd4638 | 2016 | DPRINTF(sc, ATH_DBG_XMIT, "TX failed\n"); |
528f0c6b | 2017 | goto exit; |
8feceb67 VT |
2018 | } |
2019 | ||
528f0c6b S |
2020 | return 0; |
2021 | exit: | |
2022 | dev_kfree_skb_any(skb); | |
8feceb67 | 2023 | return 0; |
f078f209 LR |
2024 | } |
2025 | ||
8feceb67 | 2026 | static void ath9k_stop(struct ieee80211_hw *hw) |
f078f209 LR |
2027 | { |
2028 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2029 | |
9c84b797 | 2030 | if (sc->sc_flags & SC_OP_INVALID) { |
04bd4638 | 2031 | DPRINTF(sc, ATH_DBG_ANY, "Device not present\n"); |
9c84b797 S |
2032 | return; |
2033 | } | |
8feceb67 | 2034 | |
04bd4638 | 2035 | DPRINTF(sc, ATH_DBG_CONFIG, "Cleaning up\n"); |
ff37e337 S |
2036 | |
2037 | ieee80211_stop_queues(sc->hw); | |
2038 | ||
2039 | /* make sure h/w will not generate any interrupt | |
2040 | * before setting the invalid flag. */ | |
2041 | ath9k_hw_set_interrupts(sc->sc_ah, 0); | |
2042 | ||
2043 | if (!(sc->sc_flags & SC_OP_INVALID)) { | |
2044 | ath_draintxq(sc, false); | |
2045 | ath_stoprecv(sc); | |
2046 | ath9k_hw_phy_disable(sc->sc_ah); | |
2047 | } else | |
b77f483f | 2048 | sc->rx.rxlink = NULL; |
ff37e337 S |
2049 | |
2050 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) | |
2051 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
2052 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); | |
2053 | #endif | |
2054 | /* disable HAL and put h/w to sleep */ | |
2055 | ath9k_hw_disable(sc->sc_ah); | |
2056 | ath9k_hw_configpcipowersave(sc->sc_ah, 1); | |
2057 | ||
2058 | sc->sc_flags |= SC_OP_INVALID; | |
500c064d | 2059 | |
04bd4638 | 2060 | DPRINTF(sc, ATH_DBG_CONFIG, "Driver halt\n"); |
f078f209 LR |
2061 | } |
2062 | ||
8feceb67 VT |
2063 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
2064 | struct ieee80211_if_init_conf *conf) | |
f078f209 LR |
2065 | { |
2066 | struct ath_softc *sc = hw->priv; | |
5640b08e | 2067 | struct ath_vap *avp = (void *)conf->vif->drv_priv; |
d97809db | 2068 | enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; |
f078f209 | 2069 | |
8feceb67 VT |
2070 | /* Support only vap for now */ |
2071 | ||
2072 | if (sc->sc_nvaps) | |
2073 | return -ENOBUFS; | |
2074 | ||
2075 | switch (conf->type) { | |
05c914fe | 2076 | case NL80211_IFTYPE_STATION: |
d97809db | 2077 | ic_opmode = NL80211_IFTYPE_STATION; |
f078f209 | 2078 | break; |
05c914fe | 2079 | case NL80211_IFTYPE_ADHOC: |
d97809db | 2080 | ic_opmode = NL80211_IFTYPE_ADHOC; |
f078f209 | 2081 | break; |
05c914fe | 2082 | case NL80211_IFTYPE_AP: |
d97809db | 2083 | ic_opmode = NL80211_IFTYPE_AP; |
f078f209 LR |
2084 | break; |
2085 | default: | |
2086 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2087 | "Interface type %d not yet supported\n", conf->type); |
8feceb67 | 2088 | return -EOPNOTSUPP; |
f078f209 LR |
2089 | } |
2090 | ||
04bd4638 | 2091 | DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VAP of type: %d\n", ic_opmode); |
8feceb67 | 2092 | |
5640b08e S |
2093 | /* Set the VAP opmode */ |
2094 | avp->av_opmode = ic_opmode; | |
2095 | avp->av_bslot = -1; | |
2096 | ||
d97809db | 2097 | if (ic_opmode == NL80211_IFTYPE_AP) |
5640b08e S |
2098 | ath9k_hw_set_tsfadjust(sc->sc_ah, 1); |
2099 | ||
2100 | sc->sc_vaps[0] = conf->vif; | |
2101 | sc->sc_nvaps++; | |
2102 | ||
2103 | /* Set the device opmode */ | |
2104 | sc->sc_ah->ah_opmode = ic_opmode; | |
2105 | ||
6f255425 LR |
2106 | if (conf->type == NL80211_IFTYPE_AP) { |
2107 | /* TODO: is this a suitable place to start ANI for AP mode? */ | |
2108 | /* Start ANI */ | |
2109 | mod_timer(&sc->sc_ani.timer, | |
2110 | jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); | |
2111 | } | |
2112 | ||
8feceb67 | 2113 | return 0; |
f078f209 LR |
2114 | } |
2115 | ||
8feceb67 VT |
2116 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
2117 | struct ieee80211_if_init_conf *conf) | |
f078f209 | 2118 | { |
8feceb67 | 2119 | struct ath_softc *sc = hw->priv; |
5640b08e | 2120 | struct ath_vap *avp = (void *)conf->vif->drv_priv; |
f078f209 | 2121 | |
04bd4638 | 2122 | DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n"); |
f078f209 | 2123 | |
6f255425 LR |
2124 | /* Stop ANI */ |
2125 | del_timer_sync(&sc->sc_ani.timer); | |
580f0b8a | 2126 | |
8feceb67 | 2127 | /* Reclaim beacon resources */ |
d97809db CM |
2128 | if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP || |
2129 | sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC) { | |
b77f483f | 2130 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
8feceb67 | 2131 | ath_beacon_return(sc, avp); |
580f0b8a | 2132 | } |
f078f209 | 2133 | |
8feceb67 | 2134 | sc->sc_flags &= ~SC_OP_BEACONS; |
f078f209 | 2135 | |
5640b08e S |
2136 | sc->sc_vaps[0] = NULL; |
2137 | sc->sc_nvaps--; | |
f078f209 LR |
2138 | } |
2139 | ||
e8975581 | 2140 | static int ath9k_config(struct ieee80211_hw *hw, u32 changed) |
f078f209 | 2141 | { |
8feceb67 | 2142 | struct ath_softc *sc = hw->priv; |
e8975581 | 2143 | struct ieee80211_conf *conf = &hw->conf; |
f078f209 | 2144 | |
aa33de09 | 2145 | mutex_lock(&sc->mutex); |
094d05dc S |
2146 | if (changed & (IEEE80211_CONF_CHANGE_CHANNEL | |
2147 | IEEE80211_CONF_CHANGE_HT)) { | |
99405f93 S |
2148 | struct ieee80211_channel *curchan = hw->conf.channel; |
2149 | int pos; | |
ae5eb026 | 2150 | |
04bd4638 S |
2151 | DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n", |
2152 | curchan->center_freq); | |
f078f209 | 2153 | |
99405f93 S |
2154 | pos = ath_get_channel(sc, curchan); |
2155 | if (pos == -1) { | |
04bd4638 S |
2156 | DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n", |
2157 | curchan->center_freq); | |
aa33de09 | 2158 | mutex_unlock(&sc->mutex); |
99405f93 S |
2159 | return -EINVAL; |
2160 | } | |
f078f209 | 2161 | |
99405f93 | 2162 | sc->tx_chan_width = ATH9K_HT_MACMODE_20; |
8feceb67 | 2163 | sc->sc_ah->ah_channels[pos].chanmode = |
99405f93 S |
2164 | (curchan->band == IEEE80211_BAND_2GHZ) ? |
2165 | CHANNEL_G : CHANNEL_A; | |
2166 | ||
094d05dc S |
2167 | if (conf->ht.enabled) { |
2168 | if (conf->ht.channel_type == NL80211_CHAN_HT40PLUS || | |
2169 | conf->ht.channel_type == NL80211_CHAN_HT40MINUS) | |
2170 | sc->tx_chan_width = ATH9K_HT_MACMODE_2040; | |
e11602b7 S |
2171 | |
2172 | sc->sc_ah->ah_channels[pos].chanmode = | |
2173 | ath_get_extchanmode(sc, curchan, | |
094d05dc | 2174 | conf->ht.channel_type); |
e11602b7 S |
2175 | } |
2176 | ||
86060f0d S |
2177 | ath_update_chainmask(sc, conf->ht.enabled); |
2178 | ||
e11602b7 | 2179 | if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) { |
04bd4638 | 2180 | DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n"); |
aa33de09 | 2181 | mutex_unlock(&sc->mutex); |
e11602b7 S |
2182 | return -EINVAL; |
2183 | } | |
094d05dc | 2184 | } |
f078f209 | 2185 | |
5c020dc6 LR |
2186 | if (changed & IEEE80211_CONF_CHANGE_POWER) |
2187 | sc->sc_config.txpowlimit = 2 * conf->power_level; | |
f078f209 | 2188 | |
aa33de09 | 2189 | mutex_unlock(&sc->mutex); |
f078f209 LR |
2190 | return 0; |
2191 | } | |
2192 | ||
8feceb67 VT |
2193 | static int ath9k_config_interface(struct ieee80211_hw *hw, |
2194 | struct ieee80211_vif *vif, | |
2195 | struct ieee80211_if_conf *conf) | |
c83be688 | 2196 | { |
8feceb67 VT |
2197 | struct ath_softc *sc = hw->priv; |
2198 | struct ath_hal *ah = sc->sc_ah; | |
5640b08e | 2199 | struct ath_vap *avp = (void *)vif->drv_priv; |
8feceb67 VT |
2200 | u32 rfilt = 0; |
2201 | int error, i; | |
c83be688 | 2202 | |
8feceb67 VT |
2203 | /* TODO: Need to decide which hw opmode to use for multi-interface |
2204 | * cases */ | |
05c914fe | 2205 | if (vif->type == NL80211_IFTYPE_AP && |
d97809db CM |
2206 | ah->ah_opmode != NL80211_IFTYPE_AP) { |
2207 | ah->ah_opmode = NL80211_IFTYPE_STATION; | |
8feceb67 VT |
2208 | ath9k_hw_setopmode(ah); |
2209 | ath9k_hw_write_associd(ah, sc->sc_myaddr, 0); | |
2210 | /* Request full reset to get hw opmode changed properly */ | |
2211 | sc->sc_flags |= SC_OP_FULL_RESET; | |
2212 | } | |
c83be688 | 2213 | |
8feceb67 VT |
2214 | if ((conf->changed & IEEE80211_IFCC_BSSID) && |
2215 | !is_zero_ether_addr(conf->bssid)) { | |
2216 | switch (vif->type) { | |
05c914fe JB |
2217 | case NL80211_IFTYPE_STATION: |
2218 | case NL80211_IFTYPE_ADHOC: | |
8feceb67 VT |
2219 | /* Set BSSID */ |
2220 | memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN); | |
2221 | sc->sc_curaid = 0; | |
2222 | ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid, | |
2223 | sc->sc_curaid); | |
c83be688 | 2224 | |
8feceb67 VT |
2225 | /* Set aggregation protection mode parameters */ |
2226 | sc->sc_config.ath_aggr_prot = 0; | |
c83be688 | 2227 | |
8feceb67 | 2228 | DPRINTF(sc, ATH_DBG_CONFIG, |
04bd4638 S |
2229 | "RX filter 0x%x bssid %pM aid 0x%x\n", |
2230 | rfilt, sc->sc_curbssid, sc->sc_curaid); | |
c83be688 | 2231 | |
8feceb67 VT |
2232 | /* need to reconfigure the beacon */ |
2233 | sc->sc_flags &= ~SC_OP_BEACONS ; | |
c83be688 | 2234 | |
8feceb67 VT |
2235 | break; |
2236 | default: | |
2237 | break; | |
2238 | } | |
2239 | } | |
c83be688 | 2240 | |
8feceb67 | 2241 | if ((conf->changed & IEEE80211_IFCC_BEACON) && |
05c914fe JB |
2242 | ((vif->type == NL80211_IFTYPE_ADHOC) || |
2243 | (vif->type == NL80211_IFTYPE_AP))) { | |
8feceb67 VT |
2244 | /* |
2245 | * Allocate and setup the beacon frame. | |
2246 | * | |
2247 | * Stop any previous beacon DMA. This may be | |
2248 | * necessary, for example, when an ibss merge | |
2249 | * causes reconfiguration; we may be called | |
2250 | * with beacon transmission active. | |
2251 | */ | |
b77f483f | 2252 | ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
c83be688 | 2253 | |
8feceb67 VT |
2254 | error = ath_beacon_alloc(sc, 0); |
2255 | if (error != 0) | |
2256 | return error; | |
c83be688 | 2257 | |
8feceb67 VT |
2258 | ath_beacon_sync(sc, 0); |
2259 | } | |
c83be688 | 2260 | |
8feceb67 | 2261 | /* Check for WLAN_CAPABILITY_PRIVACY ? */ |
d97809db | 2262 | if ((avp->av_opmode != NL80211_IFTYPE_STATION)) { |
8feceb67 VT |
2263 | for (i = 0; i < IEEE80211_WEP_NKID; i++) |
2264 | if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i)) | |
2265 | ath9k_hw_keysetmac(sc->sc_ah, | |
2266 | (u16)i, | |
2267 | sc->sc_curbssid); | |
2268 | } | |
c83be688 | 2269 | |
8feceb67 | 2270 | /* Only legacy IBSS for now */ |
05c914fe | 2271 | if (vif->type == NL80211_IFTYPE_ADHOC) |
8feceb67 | 2272 | ath_update_chainmask(sc, 0); |
f078f209 | 2273 | |
8feceb67 VT |
2274 | return 0; |
2275 | } | |
f078f209 | 2276 | |
8feceb67 VT |
2277 | #define SUPPORTED_FILTERS \ |
2278 | (FIF_PROMISC_IN_BSS | \ | |
2279 | FIF_ALLMULTI | \ | |
2280 | FIF_CONTROL | \ | |
2281 | FIF_OTHER_BSS | \ | |
2282 | FIF_BCN_PRBRESP_PROMISC | \ | |
2283 | FIF_FCSFAIL) | |
c83be688 | 2284 | |
8feceb67 VT |
2285 | /* FIXME: sc->sc_full_reset ? */ |
2286 | static void ath9k_configure_filter(struct ieee80211_hw *hw, | |
2287 | unsigned int changed_flags, | |
2288 | unsigned int *total_flags, | |
2289 | int mc_count, | |
2290 | struct dev_mc_list *mclist) | |
2291 | { | |
2292 | struct ath_softc *sc = hw->priv; | |
2293 | u32 rfilt; | |
f078f209 | 2294 | |
8feceb67 VT |
2295 | changed_flags &= SUPPORTED_FILTERS; |
2296 | *total_flags &= SUPPORTED_FILTERS; | |
f078f209 | 2297 | |
b77f483f | 2298 | sc->rx.rxfilter = *total_flags; |
8feceb67 VT |
2299 | rfilt = ath_calcrxfilter(sc); |
2300 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); | |
f078f209 | 2301 | |
8feceb67 VT |
2302 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
2303 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) | |
2304 | ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0); | |
2305 | } | |
f078f209 | 2306 | |
b77f483f | 2307 | DPRINTF(sc, ATH_DBG_CONFIG, "Set HW RX filter: 0x%x\n", sc->rx.rxfilter); |
8feceb67 | 2308 | } |
f078f209 | 2309 | |
8feceb67 VT |
2310 | static void ath9k_sta_notify(struct ieee80211_hw *hw, |
2311 | struct ieee80211_vif *vif, | |
2312 | enum sta_notify_cmd cmd, | |
17741cdc | 2313 | struct ieee80211_sta *sta) |
8feceb67 VT |
2314 | { |
2315 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2316 | |
8feceb67 VT |
2317 | switch (cmd) { |
2318 | case STA_NOTIFY_ADD: | |
5640b08e | 2319 | ath_node_attach(sc, sta); |
8feceb67 VT |
2320 | break; |
2321 | case STA_NOTIFY_REMOVE: | |
b5aa9bf9 | 2322 | ath_node_detach(sc, sta); |
8feceb67 VT |
2323 | break; |
2324 | default: | |
2325 | break; | |
2326 | } | |
f078f209 LR |
2327 | } |
2328 | ||
8feceb67 VT |
2329 | static int ath9k_conf_tx(struct ieee80211_hw *hw, |
2330 | u16 queue, | |
2331 | const struct ieee80211_tx_queue_params *params) | |
f078f209 | 2332 | { |
8feceb67 VT |
2333 | struct ath_softc *sc = hw->priv; |
2334 | struct ath9k_tx_queue_info qi; | |
2335 | int ret = 0, qnum; | |
f078f209 | 2336 | |
8feceb67 VT |
2337 | if (queue >= WME_NUM_AC) |
2338 | return 0; | |
f078f209 | 2339 | |
8feceb67 VT |
2340 | qi.tqi_aifs = params->aifs; |
2341 | qi.tqi_cwmin = params->cw_min; | |
2342 | qi.tqi_cwmax = params->cw_max; | |
2343 | qi.tqi_burstTime = params->txop; | |
2344 | qnum = ath_get_hal_qnum(queue, sc); | |
f078f209 | 2345 | |
8feceb67 | 2346 | DPRINTF(sc, ATH_DBG_CONFIG, |
04bd4638 | 2347 | "Configure tx [queue/halq] [%d/%d], " |
8feceb67 | 2348 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", |
04bd4638 S |
2349 | queue, qnum, params->aifs, params->cw_min, |
2350 | params->cw_max, params->txop); | |
f078f209 | 2351 | |
8feceb67 VT |
2352 | ret = ath_txq_update(sc, qnum, &qi); |
2353 | if (ret) | |
04bd4638 | 2354 | DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n"); |
f078f209 | 2355 | |
8feceb67 VT |
2356 | return ret; |
2357 | } | |
f078f209 | 2358 | |
8feceb67 VT |
2359 | static int ath9k_set_key(struct ieee80211_hw *hw, |
2360 | enum set_key_cmd cmd, | |
2361 | const u8 *local_addr, | |
2362 | const u8 *addr, | |
2363 | struct ieee80211_key_conf *key) | |
2364 | { | |
2365 | struct ath_softc *sc = hw->priv; | |
2366 | int ret = 0; | |
f078f209 | 2367 | |
04bd4638 | 2368 | DPRINTF(sc, ATH_DBG_KEYCACHE, "Set HW Key\n"); |
f078f209 | 2369 | |
8feceb67 VT |
2370 | switch (cmd) { |
2371 | case SET_KEY: | |
2372 | ret = ath_key_config(sc, addr, key); | |
6ace2891 JM |
2373 | if (ret >= 0) { |
2374 | key->hw_key_idx = ret; | |
8feceb67 VT |
2375 | /* push IV and Michael MIC generation to stack */ |
2376 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
2377 | if (key->alg == ALG_TKIP) | |
2378 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
6ace2891 | 2379 | ret = 0; |
8feceb67 VT |
2380 | } |
2381 | break; | |
2382 | case DISABLE_KEY: | |
2383 | ath_key_delete(sc, key); | |
8feceb67 VT |
2384 | break; |
2385 | default: | |
2386 | ret = -EINVAL; | |
2387 | } | |
f078f209 | 2388 | |
8feceb67 VT |
2389 | return ret; |
2390 | } | |
f078f209 | 2391 | |
8feceb67 VT |
2392 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
2393 | struct ieee80211_vif *vif, | |
2394 | struct ieee80211_bss_conf *bss_conf, | |
2395 | u32 changed) | |
2396 | { | |
2397 | struct ath_softc *sc = hw->priv; | |
f078f209 | 2398 | |
8feceb67 | 2399 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
04bd4638 | 2400 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n", |
8feceb67 VT |
2401 | bss_conf->use_short_preamble); |
2402 | if (bss_conf->use_short_preamble) | |
2403 | sc->sc_flags |= SC_OP_PREAMBLE_SHORT; | |
2404 | else | |
2405 | sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; | |
2406 | } | |
f078f209 | 2407 | |
8feceb67 | 2408 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
04bd4638 | 2409 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n", |
8feceb67 VT |
2410 | bss_conf->use_cts_prot); |
2411 | if (bss_conf->use_cts_prot && | |
2412 | hw->conf.channel->band != IEEE80211_BAND_5GHZ) | |
2413 | sc->sc_flags |= SC_OP_PROTECT_ENABLE; | |
2414 | else | |
2415 | sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; | |
2416 | } | |
f078f209 | 2417 | |
8feceb67 | 2418 | if (changed & BSS_CHANGED_ASSOC) { |
04bd4638 | 2419 | DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n", |
8feceb67 | 2420 | bss_conf->assoc); |
5640b08e | 2421 | ath9k_bss_assoc_info(sc, vif, bss_conf); |
8feceb67 VT |
2422 | } |
2423 | } | |
f078f209 | 2424 | |
8feceb67 VT |
2425 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
2426 | { | |
2427 | u64 tsf; | |
2428 | struct ath_softc *sc = hw->priv; | |
2429 | struct ath_hal *ah = sc->sc_ah; | |
f078f209 | 2430 | |
8feceb67 | 2431 | tsf = ath9k_hw_gettsf64(ah); |
f078f209 | 2432 | |
8feceb67 VT |
2433 | return tsf; |
2434 | } | |
f078f209 | 2435 | |
8feceb67 VT |
2436 | static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
2437 | { | |
2438 | struct ath_softc *sc = hw->priv; | |
2439 | struct ath_hal *ah = sc->sc_ah; | |
c83be688 | 2440 | |
8feceb67 VT |
2441 | ath9k_hw_reset_tsf(ah); |
2442 | } | |
f078f209 | 2443 | |
8feceb67 VT |
2444 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
2445 | enum ieee80211_ampdu_mlme_action action, | |
17741cdc JB |
2446 | struct ieee80211_sta *sta, |
2447 | u16 tid, u16 *ssn) | |
8feceb67 VT |
2448 | { |
2449 | struct ath_softc *sc = hw->priv; | |
2450 | int ret = 0; | |
f078f209 | 2451 | |
8feceb67 VT |
2452 | switch (action) { |
2453 | case IEEE80211_AMPDU_RX_START: | |
dca3edb8 S |
2454 | if (!(sc->sc_flags & SC_OP_RXAGGR)) |
2455 | ret = -ENOTSUPP; | |
8feceb67 VT |
2456 | break; |
2457 | case IEEE80211_AMPDU_RX_STOP: | |
8feceb67 VT |
2458 | break; |
2459 | case IEEE80211_AMPDU_TX_START: | |
b5aa9bf9 | 2460 | ret = ath_tx_aggr_start(sc, sta, tid, ssn); |
8feceb67 VT |
2461 | if (ret < 0) |
2462 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2463 | "Unable to start TX aggregation\n"); |
8feceb67 | 2464 | else |
17741cdc | 2465 | ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
8feceb67 VT |
2466 | break; |
2467 | case IEEE80211_AMPDU_TX_STOP: | |
b5aa9bf9 | 2468 | ret = ath_tx_aggr_stop(sc, sta, tid); |
8feceb67 VT |
2469 | if (ret < 0) |
2470 | DPRINTF(sc, ATH_DBG_FATAL, | |
04bd4638 | 2471 | "Unable to stop TX aggregation\n"); |
f078f209 | 2472 | |
17741cdc | 2473 | ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid); |
8feceb67 | 2474 | break; |
8469cdef S |
2475 | case IEEE80211_AMPDU_TX_RESUME: |
2476 | ath_tx_aggr_resume(sc, sta, tid); | |
2477 | break; | |
8feceb67 | 2478 | default: |
04bd4638 | 2479 | DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n"); |
8feceb67 VT |
2480 | } |
2481 | ||
2482 | return ret; | |
f078f209 LR |
2483 | } |
2484 | ||
8feceb67 VT |
2485 | static struct ieee80211_ops ath9k_ops = { |
2486 | .tx = ath9k_tx, | |
2487 | .start = ath9k_start, | |
2488 | .stop = ath9k_stop, | |
2489 | .add_interface = ath9k_add_interface, | |
2490 | .remove_interface = ath9k_remove_interface, | |
2491 | .config = ath9k_config, | |
2492 | .config_interface = ath9k_config_interface, | |
2493 | .configure_filter = ath9k_configure_filter, | |
8feceb67 VT |
2494 | .sta_notify = ath9k_sta_notify, |
2495 | .conf_tx = ath9k_conf_tx, | |
8feceb67 | 2496 | .bss_info_changed = ath9k_bss_info_changed, |
8feceb67 | 2497 | .set_key = ath9k_set_key, |
8feceb67 VT |
2498 | .get_tsf = ath9k_get_tsf, |
2499 | .reset_tsf = ath9k_reset_tsf, | |
4233df6b | 2500 | .ampdu_action = ath9k_ampdu_action, |
8feceb67 VT |
2501 | }; |
2502 | ||
392dff83 BP |
2503 | static struct { |
2504 | u32 version; | |
2505 | const char * name; | |
2506 | } ath_mac_bb_names[] = { | |
2507 | { AR_SREV_VERSION_5416_PCI, "5416" }, | |
2508 | { AR_SREV_VERSION_5416_PCIE, "5418" }, | |
2509 | { AR_SREV_VERSION_9100, "9100" }, | |
2510 | { AR_SREV_VERSION_9160, "9160" }, | |
2511 | { AR_SREV_VERSION_9280, "9280" }, | |
2512 | { AR_SREV_VERSION_9285, "9285" } | |
2513 | }; | |
2514 | ||
2515 | static struct { | |
2516 | u16 version; | |
2517 | const char * name; | |
2518 | } ath_rf_names[] = { | |
2519 | { 0, "5133" }, | |
2520 | { AR_RAD5133_SREV_MAJOR, "5133" }, | |
2521 | { AR_RAD5122_SREV_MAJOR, "5122" }, | |
2522 | { AR_RAD2133_SREV_MAJOR, "2133" }, | |
2523 | { AR_RAD2122_SREV_MAJOR, "2122" } | |
2524 | }; | |
2525 | ||
2526 | /* | |
2527 | * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown. | |
2528 | */ | |
392dff83 BP |
2529 | static const char * |
2530 | ath_mac_bb_name(u32 mac_bb_version) | |
2531 | { | |
2532 | int i; | |
2533 | ||
2534 | for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) { | |
2535 | if (ath_mac_bb_names[i].version == mac_bb_version) { | |
2536 | return ath_mac_bb_names[i].name; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | return "????"; | |
2541 | } | |
2542 | ||
2543 | /* | |
2544 | * Return the RF name. "????" is returned if the RF is unknown. | |
2545 | */ | |
392dff83 BP |
2546 | static const char * |
2547 | ath_rf_name(u16 rf_version) | |
2548 | { | |
2549 | int i; | |
2550 | ||
2551 | for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) { | |
2552 | if (ath_rf_names[i].version == rf_version) { | |
2553 | return ath_rf_names[i].name; | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | return "????"; | |
2558 | } | |
2559 | ||
f078f209 LR |
2560 | static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
2561 | { | |
2562 | void __iomem *mem; | |
2563 | struct ath_softc *sc; | |
2564 | struct ieee80211_hw *hw; | |
f078f209 LR |
2565 | u8 csz; |
2566 | u32 val; | |
2567 | int ret = 0; | |
392dff83 | 2568 | struct ath_hal *ah; |
f078f209 LR |
2569 | |
2570 | if (pci_enable_device(pdev)) | |
2571 | return -EIO; | |
2572 | ||
97b777db LR |
2573 | ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
2574 | ||
2575 | if (ret) { | |
1d450cfc | 2576 | printk(KERN_ERR "ath9k: 32-bit DMA not available\n"); |
97b777db LR |
2577 | goto bad; |
2578 | } | |
2579 | ||
2580 | ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
2581 | ||
2582 | if (ret) { | |
2583 | printk(KERN_ERR "ath9k: 32-bit DMA consistent " | |
04bd4638 | 2584 | "DMA enable failed\n"); |
f078f209 LR |
2585 | goto bad; |
2586 | } | |
2587 | ||
2588 | /* | |
2589 | * Cache line size is used to size and align various | |
2590 | * structures used to communicate with the hardware. | |
2591 | */ | |
2592 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); | |
2593 | if (csz == 0) { | |
2594 | /* | |
2595 | * Linux 2.4.18 (at least) writes the cache line size | |
2596 | * register as a 16-bit wide register which is wrong. | |
2597 | * We must have this setup properly for rx buffer | |
2598 | * DMA to work so force a reasonable value here if it | |
2599 | * comes up zero. | |
2600 | */ | |
2601 | csz = L1_CACHE_BYTES / sizeof(u32); | |
2602 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); | |
2603 | } | |
2604 | /* | |
2605 | * The default setting of latency timer yields poor results, | |
2606 | * set it to the value used by other systems. It may be worth | |
2607 | * tweaking this setting more. | |
2608 | */ | |
2609 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); | |
2610 | ||
2611 | pci_set_master(pdev); | |
2612 | ||
2613 | /* | |
2614 | * Disable the RETRY_TIMEOUT register (0x41) to keep | |
2615 | * PCI Tx retries from interfering with C3 CPU state. | |
2616 | */ | |
2617 | pci_read_config_dword(pdev, 0x40, &val); | |
2618 | if ((val & 0x0000ff00) != 0) | |
2619 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); | |
2620 | ||
2621 | ret = pci_request_region(pdev, 0, "ath9k"); | |
2622 | if (ret) { | |
2623 | dev_err(&pdev->dev, "PCI memory region reserve error\n"); | |
2624 | ret = -ENODEV; | |
2625 | goto bad; | |
2626 | } | |
2627 | ||
2628 | mem = pci_iomap(pdev, 0, 0); | |
2629 | if (!mem) { | |
2630 | printk(KERN_ERR "PCI memory map error\n") ; | |
2631 | ret = -EIO; | |
2632 | goto bad1; | |
2633 | } | |
2634 | ||
2635 | hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops); | |
2636 | if (hw == NULL) { | |
2637 | printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n"); | |
2638 | goto bad2; | |
2639 | } | |
2640 | ||
f078f209 LR |
2641 | SET_IEEE80211_DEV(hw, &pdev->dev); |
2642 | pci_set_drvdata(pdev, hw); | |
2643 | ||
2644 | sc = hw->priv; | |
2645 | sc->hw = hw; | |
2646 | sc->pdev = pdev; | |
2647 | sc->mem = mem; | |
2648 | ||
2649 | if (ath_attach(id->device, sc) != 0) { | |
2650 | ret = -ENODEV; | |
2651 | goto bad3; | |
2652 | } | |
2653 | ||
2654 | /* setup interrupt service routine */ | |
2655 | ||
2656 | if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) { | |
2657 | printk(KERN_ERR "%s: request_irq failed\n", | |
2658 | wiphy_name(hw->wiphy)); | |
2659 | ret = -EIO; | |
2660 | goto bad4; | |
2661 | } | |
2662 | ||
392dff83 BP |
2663 | ah = sc->sc_ah; |
2664 | printk(KERN_INFO | |
2665 | "%s: Atheros AR%s MAC/BB Rev:%x " | |
2666 | "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n", | |
f078f209 | 2667 | wiphy_name(hw->wiphy), |
392dff83 BP |
2668 | ath_mac_bb_name(ah->ah_macVersion), |
2669 | ah->ah_macRev, | |
2670 | ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)), | |
2671 | ah->ah_phyRev, | |
f078f209 LR |
2672 | (unsigned long)mem, pdev->irq); |
2673 | ||
2674 | return 0; | |
2675 | bad4: | |
2676 | ath_detach(sc); | |
2677 | bad3: | |
2678 | ieee80211_free_hw(hw); | |
2679 | bad2: | |
2680 | pci_iounmap(pdev, mem); | |
2681 | bad1: | |
2682 | pci_release_region(pdev, 0); | |
2683 | bad: | |
2684 | pci_disable_device(pdev); | |
2685 | return ret; | |
2686 | } | |
2687 | ||
2688 | static void ath_pci_remove(struct pci_dev *pdev) | |
2689 | { | |
2690 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
2691 | struct ath_softc *sc = hw->priv; | |
2692 | ||
f078f209 | 2693 | ath_detach(sc); |
9c84b797 S |
2694 | if (pdev->irq) |
2695 | free_irq(pdev->irq, sc); | |
f078f209 LR |
2696 | pci_iounmap(pdev, sc->mem); |
2697 | pci_release_region(pdev, 0); | |
2698 | pci_disable_device(pdev); | |
2699 | ieee80211_free_hw(hw); | |
2700 | } | |
2701 | ||
2702 | #ifdef CONFIG_PM | |
2703 | ||
2704 | static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
2705 | { | |
c83be688 VT |
2706 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
2707 | struct ath_softc *sc = hw->priv; | |
2708 | ||
2709 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
500c064d | 2710 | |
e97275cb | 2711 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d VT |
2712 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
2713 | cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll); | |
2714 | #endif | |
2715 | ||
f078f209 LR |
2716 | pci_save_state(pdev); |
2717 | pci_disable_device(pdev); | |
2718 | pci_set_power_state(pdev, 3); | |
2719 | ||
2720 | return 0; | |
2721 | } | |
2722 | ||
2723 | static int ath_pci_resume(struct pci_dev *pdev) | |
2724 | { | |
c83be688 VT |
2725 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
2726 | struct ath_softc *sc = hw->priv; | |
f078f209 LR |
2727 | u32 val; |
2728 | int err; | |
2729 | ||
2730 | err = pci_enable_device(pdev); | |
2731 | if (err) | |
2732 | return err; | |
2733 | pci_restore_state(pdev); | |
2734 | /* | |
2735 | * Suspend/Resume resets the PCI configuration space, so we have to | |
2736 | * re-disable the RETRY_TIMEOUT register (0x41) to keep | |
2737 | * PCI Tx retries from interfering with C3 CPU state | |
2738 | */ | |
2739 | pci_read_config_dword(pdev, 0x40, &val); | |
2740 | if ((val & 0x0000ff00) != 0) | |
2741 | pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); | |
2742 | ||
c83be688 VT |
2743 | /* Enable LED */ |
2744 | ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN, | |
2745 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); | |
2746 | ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1); | |
2747 | ||
e97275cb | 2748 | #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) |
500c064d VT |
2749 | /* |
2750 | * check the h/w rfkill state on resume | |
2751 | * and start the rfkill poll timer | |
2752 | */ | |
2753 | if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT) | |
2754 | queue_delayed_work(sc->hw->workqueue, | |
2755 | &sc->rf_kill.rfkill_poll, 0); | |
2756 | #endif | |
2757 | ||
f078f209 LR |
2758 | return 0; |
2759 | } | |
2760 | ||
2761 | #endif /* CONFIG_PM */ | |
2762 | ||
2763 | MODULE_DEVICE_TABLE(pci, ath_pci_id_table); | |
2764 | ||
2765 | static struct pci_driver ath_pci_driver = { | |
2766 | .name = "ath9k", | |
2767 | .id_table = ath_pci_id_table, | |
2768 | .probe = ath_pci_probe, | |
2769 | .remove = ath_pci_remove, | |
2770 | #ifdef CONFIG_PM | |
2771 | .suspend = ath_pci_suspend, | |
2772 | .resume = ath_pci_resume, | |
2773 | #endif /* CONFIG_PM */ | |
2774 | }; | |
2775 | ||
2776 | static int __init init_ath_pci(void) | |
2777 | { | |
ca8a8560 VT |
2778 | int error; |
2779 | ||
f078f209 LR |
2780 | printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION); |
2781 | ||
ca8a8560 VT |
2782 | /* Register rate control algorithm */ |
2783 | error = ath_rate_control_register(); | |
2784 | if (error != 0) { | |
2785 | printk(KERN_ERR | |
2786 | "Unable to register rate control algorithm: %d\n", | |
2787 | error); | |
2788 | ath_rate_control_unregister(); | |
2789 | return error; | |
2790 | } | |
2791 | ||
f078f209 LR |
2792 | if (pci_register_driver(&ath_pci_driver) < 0) { |
2793 | printk(KERN_ERR | |
2794 | "ath_pci: No devices found, driver not installed.\n"); | |
ca8a8560 | 2795 | ath_rate_control_unregister(); |
f078f209 LR |
2796 | pci_unregister_driver(&ath_pci_driver); |
2797 | return -ENODEV; | |
2798 | } | |
2799 | ||
2800 | return 0; | |
2801 | } | |
2802 | module_init(init_ath_pci); | |
2803 | ||
2804 | static void __exit exit_ath_pci(void) | |
2805 | { | |
ca8a8560 | 2806 | ath_rate_control_unregister(); |
f078f209 | 2807 | pci_unregister_driver(&ath_pci_driver); |
04bd4638 | 2808 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); |
f078f209 LR |
2809 | } |
2810 | module_exit(exit_ath_pci); |