2 * Copyright (c) 2008 Atheros Communications Inc.
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.
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.
17 #include <linux/nl80211.h>
22 #define ATH_PCI_VERSION "0.1"
24 static char *dev_info = "ath9k";
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");
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 */
37 { PCI_VDEVICE(ATHEROS, 0x002B) }, /* PCI-E */
41 static void ath_detach(struct ath_softc *sc);
43 /* return bus cachesize in 4B word units */
45 static void bus_read_cachesize(struct ath_softc *sc, int *csz)
49 pci_read_config_byte(sc->pdev, PCI_CACHE_LINE_SIZE, (u8 *)&u8tmp);
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
59 *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */
62 static void ath_setcurmode(struct ath_softc *sc, enum wireless_mode mode)
64 sc->cur_rate_table = sc->hw_rate_table[mode];
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.
70 sc->sc_protrix = (mode == ATH9K_MODE_11G ? 1 : 0);
73 static enum wireless_mode ath_chan2mode(struct ath9k_channel *chan)
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;
94 WARN_ON(1); /* should not get here */
96 return ATH9K_MODE_11B;
99 static void ath_update_txpow(struct ath_softc *sc)
101 struct ath_hal *ah = sc->sc_ah;
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;
112 static u8 parse_mpdudensity(u8 mpdudensity)
115 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
116 * 0 for no restriction
125 switch (mpdudensity) {
131 /* Our lower layer calculations limit our precision to
147 static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band)
149 struct ath_rate_table *rate_table = NULL;
150 struct ieee80211_supported_band *sband;
151 struct ieee80211_rate *rate;
155 case IEEE80211_BAND_2GHZ:
156 rate_table = sc->hw_rate_table[ATH9K_MODE_11G];
158 case IEEE80211_BAND_5GHZ:
159 rate_table = sc->hw_rate_table[ATH9K_MODE_11A];
165 if (rate_table == NULL)
168 sband = &sc->sbands[band];
169 rate = sc->rates[band];
171 if (rate_table->rate_cnt > ATH_RATE_MAX)
172 maxrates = ATH_RATE_MAX;
174 maxrates = rate_table->rate_cnt;
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;
180 DPRINTF(sc, ATH_DBG_CONFIG, "Rate: %2dMbps, ratecode: %2d\n",
181 rate[i].bitrate / 10, rate[i].hw_value);
185 static int ath_setup_channels(struct ath_softc *sc)
187 struct ath_hal *ah = sc->sc_ah;
188 int nchan, i, a = 0, b = 0;
189 u8 regclassids[ATH_REGCLASSIDS_MAX];
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;
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,
203 "Unable to collect channel list; "
204 "regdomain likely %u country code %u\n",
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];
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;
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;
226 band_2ghz->n_channels = ++a;
228 DPRINTF(sc, ATH_DBG_CONFIG, "2MHz channel: %d, "
229 "channelFlags: 0x%x\n",
230 c->channel, c->channelFlags);
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;
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;
241 band_5ghz->n_channels = ++b;
243 DPRINTF(sc, ATH_DBG_CONFIG, "5MHz channel: %d, "
244 "channelFlags: 0x%x\n",
245 c->channel, c->channelFlags);
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.
257 static int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan)
259 struct ath_hal *ah = sc->sc_ah;
260 bool fastcc = true, stopped;
262 if (sc->sc_flags & SC_OP_INVALID)
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)) {
271 * This is only performed if the channel settings have
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.
279 ath9k_hw_set_interrupts(ah, 0);
280 ath_draintxq(sc, false);
281 stopped = ath_stoprecv(sc);
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. */
287 if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
290 DPRINTF(sc, ATH_DBG_CONFIG,
291 "(%u MHz) -> (%u MHz), cflags:%x, chanwidth: %d\n",
292 sc->sc_ah->ah_curchan->channel,
293 hchan->channel, hchan->channelFlags, sc->tx_chan_width);
295 spin_lock_bh(&sc->sc_resetlock);
296 if (!ath9k_hw_reset(ah, hchan, sc->tx_chan_width,
297 sc->sc_tx_chainmask, sc->sc_rx_chainmask,
298 sc->sc_ht_extprotspacing, fastcc, &status)) {
299 DPRINTF(sc, ATH_DBG_FATAL,
300 "Unable to reset channel %u (%uMhz) "
301 "flags 0x%x hal status %u\n",
302 ath9k_hw_mhz2ieee(ah, hchan->channel,
303 hchan->channelFlags),
304 hchan->channel, hchan->channelFlags, status);
305 spin_unlock_bh(&sc->sc_resetlock);
308 spin_unlock_bh(&sc->sc_resetlock);
310 sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE;
311 sc->sc_flags &= ~SC_OP_FULL_RESET;
313 if (ath_startrecv(sc) != 0) {
314 DPRINTF(sc, ATH_DBG_FATAL,
315 "Unable to restart recv logic\n");
319 ath_setcurmode(sc, ath_chan2mode(hchan));
320 ath_update_txpow(sc);
321 ath9k_hw_set_interrupts(ah, sc->sc_imask);
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.
333 static void ath_ani_calibrate(unsigned long data)
335 struct ath_softc *sc;
337 bool longcal = false;
338 bool shortcal = false;
339 bool aniflag = false;
340 unsigned int timestamp = jiffies_to_msecs(jiffies);
343 sc = (struct ath_softc *)data;
347 * don't calibrate when we're scanning.
348 * we are most likely not on our home channel.
350 if (sc->rx.rxfilter & FIF_BCN_PRBRESP_PROMISC)
353 /* Long calibration runs independently of short calibration. */
354 if ((timestamp - sc->sc_ani.sc_longcal_timer) >= ATH_LONG_CALINTERVAL) {
356 DPRINTF(sc, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
357 sc->sc_ani.sc_longcal_timer = timestamp;
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) {
365 DPRINTF(sc, ATH_DBG_ANI, "shortcal @%lu\n", jiffies);
366 sc->sc_ani.sc_shortcal_timer = timestamp;
367 sc->sc_ani.sc_resetcal_timer = timestamp;
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;
379 /* Verify whether we must check ANI */
380 if ((timestamp - sc->sc_ani.sc_checkani_timer) >=
381 ATH_ANI_POLLINTERVAL) {
383 sc->sc_ani.sc_checkani_timer = timestamp;
386 /* Skip all processing if there's nothing to do. */
387 if (longcal || shortcal || aniflag) {
388 /* Call ANI routine if necessary */
390 ath9k_hw_ani_monitor(ah, &sc->sc_halstats,
393 /* Perform calibration if necessary */
394 if (longcal || shortcal) {
395 bool iscaldone = false;
397 if (ath9k_hw_calibrate(ah, ah->ah_curchan,
398 sc->sc_rx_chainmask, longcal,
401 sc->sc_ani.sc_noise_floor =
402 ath9k_hw_getchan_noise(ah,
405 DPRINTF(sc, ATH_DBG_ANI,
406 "calibrate chan %u/%x nf: %d\n",
407 ah->ah_curchan->channel,
408 ah->ah_curchan->channelFlags,
409 sc->sc_ani.sc_noise_floor);
411 DPRINTF(sc, ATH_DBG_ANY,
412 "calibrate chan %u/%x failed\n",
413 ah->ah_curchan->channel,
414 ah->ah_curchan->channelFlags);
416 sc->sc_ani.sc_caldone = iscaldone;
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.
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);
428 if (!sc->sc_ani.sc_caldone)
429 cal_interval = min(cal_interval, (u32)ATH_SHORT_CALINTERVAL);
431 mod_timer(&sc->sc_ani.timer, jiffies + msecs_to_jiffies(cal_interval));
435 * Update tx/rx chainmask. For legacy association,
436 * hard code chainmask to 1x1, for 11n association, use
437 * the chainmask configuration.
439 static void ath_update_chainmask(struct ath_softc *sc, int is_ht)
441 sc->sc_flags |= SC_OP_CHAINMASK_UPDATE;
443 sc->sc_tx_chainmask = sc->sc_ah->ah_caps.tx_chainmask;
444 sc->sc_rx_chainmask = sc->sc_ah->ah_caps.rx_chainmask;
446 sc->sc_tx_chainmask = 1;
447 sc->sc_rx_chainmask = 1;
450 DPRINTF(sc, ATH_DBG_CONFIG, "tx chmask: %d, rx chmask: %d\n",
451 sc->sc_tx_chainmask, sc->sc_rx_chainmask);
454 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
458 an = (struct ath_node *)sta->drv_priv;
460 if (sc->sc_flags & SC_OP_TXAGGR)
461 ath_tx_node_init(sc, an);
463 an->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
464 sta->ht_cap.ampdu_factor);
465 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
468 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
470 struct ath_node *an = (struct ath_node *)sta->drv_priv;
472 if (sc->sc_flags & SC_OP_TXAGGR)
473 ath_tx_node_cleanup(sc, an);
476 static void ath9k_tasklet(unsigned long data)
478 struct ath_softc *sc = (struct ath_softc *)data;
479 u32 status = sc->sc_intrstatus;
481 if (status & ATH9K_INT_FATAL) {
482 /* need a chip reset */
483 ath_reset(sc, false);
488 (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) {
489 spin_lock_bh(&sc->rx.rxflushlock);
490 ath_rx_tasklet(sc, 0);
491 spin_unlock_bh(&sc->rx.rxflushlock);
493 /* XXX: optimize this */
494 if (status & ATH9K_INT_TX)
498 /* re-enable hardware interrupt */
499 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
502 static irqreturn_t ath_isr(int irq, void *dev)
504 struct ath_softc *sc = dev;
505 struct ath_hal *ah = sc->sc_ah;
506 enum ath9k_int status;
510 if (sc->sc_flags & SC_OP_INVALID) {
512 * The hardware is not ready/present, don't
513 * touch anything. Note this can happen early
514 * on if the IRQ is shared.
518 if (!ath9k_hw_intrpend(ah)) { /* shared irq, not for us */
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.
528 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
530 status &= sc->sc_imask; /* discard unasked-for bits */
533 * If there are no status bits set, then this interrupt was not
534 * for me (should have been caught above).
539 sc->sc_intrstatus = status;
541 if (status & ATH9K_INT_FATAL) {
542 /* need a chip reset */
544 } else if (status & ATH9K_INT_RXORN) {
545 /* need a chip reset */
548 if (status & ATH9K_INT_SWBA) {
549 /* schedule a tasklet for beacon handling */
550 tasklet_schedule(&sc->bcon_tasklet);
552 if (status & ATH9K_INT_RXEOL) {
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.
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)
567 if (status & ATH9K_INT_TX)
569 if (status & ATH9K_INT_BMISS)
571 /* carrier sense timeout */
572 if (status & ATH9K_INT_CST)
574 if (status & ATH9K_INT_MIB) {
576 * Disable interrupts until we service the MIB
577 * interrupt; otherwise it will continue to
580 ath9k_hw_set_interrupts(ah, 0);
582 * Let the hal handle the event. We assume
583 * it will clear whatever condition caused
586 ath9k_hw_procmibevent(ah, &sc->sc_halstats);
587 ath9k_hw_set_interrupts(ah, sc->sc_imask);
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
594 ath9k_hw_setrxabort(ah, 0);
601 ath_debug_stat_interrupt(sc, status);
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);
612 static int ath_get_channel(struct ath_softc *sc,
613 struct ieee80211_channel *chan)
617 for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
618 if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
625 static u32 ath_get_extchanmode(struct ath_softc *sc,
626 struct ieee80211_channel *chan,
627 enum nl80211_channel_type channel_type)
631 switch (chan->band) {
632 case IEEE80211_BAND_2GHZ:
633 switch(channel_type) {
634 case NL80211_CHAN_NO_HT:
635 case NL80211_CHAN_HT20:
636 chanmode = CHANNEL_G_HT20;
638 case NL80211_CHAN_HT40PLUS:
639 chanmode = CHANNEL_G_HT40PLUS;
641 case NL80211_CHAN_HT40MINUS:
642 chanmode = CHANNEL_G_HT40MINUS;
646 case IEEE80211_BAND_5GHZ:
647 switch(channel_type) {
648 case NL80211_CHAN_NO_HT:
649 case NL80211_CHAN_HT20:
650 chanmode = CHANNEL_A_HT20;
652 case NL80211_CHAN_HT40PLUS:
653 chanmode = CHANNEL_A_HT40PLUS;
655 case NL80211_CHAN_HT40MINUS:
656 chanmode = CHANNEL_A_HT40MINUS;
667 static int ath_keyset(struct ath_softc *sc, u16 keyix,
668 struct ath9k_keyval *hk, const u8 mac[ETH_ALEN])
672 status = ath9k_hw_set_keycache_entry(sc->sc_ah,
673 keyix, hk, mac, false);
675 return status != false;
678 static int ath_setkey_tkip(struct ath_softc *sc, u16 keyix, const u8 *key,
679 struct ath9k_keyval *hk,
685 key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
686 key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
689 /* Group key installation */
690 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
691 return ath_keyset(sc, keyix, hk, addr);
693 if (!sc->sc_splitmic) {
695 * data key goes at first index,
696 * the hal handles the MIC keys at index+64.
698 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
699 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
700 return ath_keyset(sc, keyix, hk, addr);
703 * TX key goes at first index, RX key at +32.
704 * The hal handles the MIC keys at index+64.
706 memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
707 if (!ath_keyset(sc, keyix, hk, NULL)) {
708 /* Txmic entry failed. No need to proceed further */
709 DPRINTF(sc, ATH_DBG_KEYCACHE,
710 "Setting TX MIC Key Failed\n");
714 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
715 /* XXX delete tx key on failure? */
716 return ath_keyset(sc, keyix + 32, hk, addr);
719 static int ath_reserve_key_cache_slot_tkip(struct ath_softc *sc)
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 */
732 /* Found a free slot for a TKIP key */
738 static int ath_reserve_key_cache_slot(struct ath_softc *sc)
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)))
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)))
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)))
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)))
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))
771 if (test_bit(i, sc->sc_keymap) &&
772 !test_bit(i + 64, sc->sc_keymap))
777 /* No partially used TKIP slots, pick any available slot */
778 for (i = IEEE80211_WEP_NKID; i < sc->sc_keymax; i++) {
779 if (!test_bit(i, sc->sc_keymap))
780 return i; /* Found a free slot for a key */
783 /* No free slot found */
787 static int ath_key_config(struct ath_softc *sc,
789 struct ieee80211_key_conf *key)
791 struct ath9k_keyval hk;
792 const u8 *mac = NULL;
796 memset(&hk, 0, sizeof(hk));
800 hk.kv_type = ATH9K_CIPHER_WEP;
803 hk.kv_type = ATH9K_CIPHER_TKIP;
806 hk.kv_type = ATH9K_CIPHER_AES_CCM;
812 hk.kv_len = key->keylen;
813 memcpy(hk.kv_val, key->key, key->keylen);
815 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
816 /* For now, use the default keys for broadcast keys. This may
817 * need to change with virtual interfaces. */
819 } else if (key->keyidx) {
820 struct ieee80211_vif *vif;
823 vif = sc->sc_vaps[0];
824 if (vif->type != NL80211_IFTYPE_AP) {
825 /* Only keyidx 0 should be used with unicast key, but
826 * allow this for client mode for now. */
832 if (key->alg == ALG_TKIP)
833 idx = ath_reserve_key_cache_slot_tkip(sc);
835 idx = ath_reserve_key_cache_slot(sc);
837 return -EIO; /* no free key cache entries */
840 if (key->alg == ALG_TKIP)
841 ret = ath_setkey_tkip(sc, idx, key->key, &hk, mac);
843 ret = ath_keyset(sc, idx, &hk, mac);
848 set_bit(idx, sc->sc_keymap);
849 if (key->alg == ALG_TKIP) {
850 set_bit(idx + 64, sc->sc_keymap);
851 if (sc->sc_splitmic) {
852 set_bit(idx + 32, sc->sc_keymap);
853 set_bit(idx + 64 + 32, sc->sc_keymap);
860 static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
862 ath9k_hw_keyreset(sc->sc_ah, key->hw_key_idx);
863 if (key->hw_key_idx < IEEE80211_WEP_NKID)
866 clear_bit(key->hw_key_idx, sc->sc_keymap);
867 if (key->alg != ALG_TKIP)
870 clear_bit(key->hw_key_idx + 64, sc->sc_keymap);
871 if (sc->sc_splitmic) {
872 clear_bit(key->hw_key_idx + 32, sc->sc_keymap);
873 clear_bit(key->hw_key_idx + 64 + 32, sc->sc_keymap);
877 static void setup_ht_cap(struct ieee80211_sta_ht_cap *ht_info)
879 #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
880 #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
882 ht_info->ht_supported = true;
883 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
884 IEEE80211_HT_CAP_SM_PS |
885 IEEE80211_HT_CAP_SGI_40 |
886 IEEE80211_HT_CAP_DSSSCCK40;
888 ht_info->ampdu_factor = ATH9K_HT_CAP_MAXRXAMPDU_65536;
889 ht_info->ampdu_density = ATH9K_HT_CAP_MPDUDENSITY_8;
890 /* set up supported mcs set */
891 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
892 ht_info->mcs.rx_mask[0] = 0xff;
893 ht_info->mcs.rx_mask[1] = 0xff;
894 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
897 static void ath9k_bss_assoc_info(struct ath_softc *sc,
898 struct ieee80211_vif *vif,
899 struct ieee80211_bss_conf *bss_conf)
901 struct ath_vap *avp = (void *)vif->drv_priv;
903 if (bss_conf->assoc) {
904 DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info ASSOC %d, bssid: %pM\n",
905 bss_conf->aid, sc->sc_curbssid);
907 /* New association, store aid */
908 if (avp->av_opmode == NL80211_IFTYPE_STATION) {
909 sc->sc_curaid = bss_conf->aid;
910 ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
914 /* Configure the beacon */
915 ath_beacon_config(sc, 0);
916 sc->sc_flags |= SC_OP_BEACONS;
918 /* Reset rssi stats */
919 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
920 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
921 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
922 sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
925 mod_timer(&sc->sc_ani.timer,
926 jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
929 DPRINTF(sc, ATH_DBG_CONFIG, "Bss Info DISSOC\n");
934 /********************************/
936 /********************************/
938 static void ath_led_brightness(struct led_classdev *led_cdev,
939 enum led_brightness brightness)
941 struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
942 struct ath_softc *sc = led->sc;
944 switch (brightness) {
946 if (led->led_type == ATH_LED_ASSOC ||
947 led->led_type == ATH_LED_RADIO)
948 sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
949 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN,
950 (led->led_type == ATH_LED_RADIO) ? 1 :
951 !!(sc->sc_flags & SC_OP_LED_ASSOCIATED));
954 if (led->led_type == ATH_LED_ASSOC)
955 sc->sc_flags |= SC_OP_LED_ASSOCIATED;
956 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 0);
963 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
969 led->led_cdev.name = led->name;
970 led->led_cdev.default_trigger = trigger;
971 led->led_cdev.brightness_set = ath_led_brightness;
973 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
975 DPRINTF(sc, ATH_DBG_FATAL,
976 "Failed to register led:%s", led->name);
982 static void ath_unregister_led(struct ath_led *led)
984 if (led->registered) {
985 led_classdev_unregister(&led->led_cdev);
990 static void ath_deinit_leds(struct ath_softc *sc)
992 ath_unregister_led(&sc->assoc_led);
993 sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
994 ath_unregister_led(&sc->tx_led);
995 ath_unregister_led(&sc->rx_led);
996 ath_unregister_led(&sc->radio_led);
997 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1000 static void ath_init_leds(struct ath_softc *sc)
1005 /* Configure gpio 1 for output */
1006 ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
1007 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1008 /* LED off, active low */
1009 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
1011 trigger = ieee80211_get_radio_led_name(sc->hw);
1012 snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
1013 "ath9k-%s:radio", wiphy_name(sc->hw->wiphy));
1014 ret = ath_register_led(sc, &sc->radio_led, trigger);
1015 sc->radio_led.led_type = ATH_LED_RADIO;
1019 trigger = ieee80211_get_assoc_led_name(sc->hw);
1020 snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
1021 "ath9k-%s:assoc", wiphy_name(sc->hw->wiphy));
1022 ret = ath_register_led(sc, &sc->assoc_led, trigger);
1023 sc->assoc_led.led_type = ATH_LED_ASSOC;
1027 trigger = ieee80211_get_tx_led_name(sc->hw);
1028 snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
1029 "ath9k-%s:tx", wiphy_name(sc->hw->wiphy));
1030 ret = ath_register_led(sc, &sc->tx_led, trigger);
1031 sc->tx_led.led_type = ATH_LED_TX;
1035 trigger = ieee80211_get_rx_led_name(sc->hw);
1036 snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
1037 "ath9k-%s:rx", wiphy_name(sc->hw->wiphy));
1038 ret = ath_register_led(sc, &sc->rx_led, trigger);
1039 sc->rx_led.led_type = ATH_LED_RX;
1046 ath_deinit_leds(sc);
1049 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1051 /*******************/
1053 /*******************/
1055 static void ath_radio_enable(struct ath_softc *sc)
1057 struct ath_hal *ah = sc->sc_ah;
1060 spin_lock_bh(&sc->sc_resetlock);
1061 if (!ath9k_hw_reset(ah, ah->ah_curchan,
1063 sc->sc_tx_chainmask,
1064 sc->sc_rx_chainmask,
1065 sc->sc_ht_extprotspacing,
1067 DPRINTF(sc, ATH_DBG_FATAL,
1068 "Unable to reset channel %u (%uMhz) "
1069 "flags 0x%x hal status %u\n",
1070 ath9k_hw_mhz2ieee(ah,
1071 ah->ah_curchan->channel,
1072 ah->ah_curchan->channelFlags),
1073 ah->ah_curchan->channel,
1074 ah->ah_curchan->channelFlags, status);
1076 spin_unlock_bh(&sc->sc_resetlock);
1078 ath_update_txpow(sc);
1079 if (ath_startrecv(sc) != 0) {
1080 DPRINTF(sc, ATH_DBG_FATAL,
1081 "Unable to restart recv logic\n");
1085 if (sc->sc_flags & SC_OP_BEACONS)
1086 ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */
1088 /* Re-Enable interrupts */
1089 ath9k_hw_set_interrupts(ah, sc->sc_imask);
1092 ath9k_hw_cfg_output(ah, ATH_LED_PIN,
1093 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1094 ath9k_hw_set_gpio(ah, ATH_LED_PIN, 0);
1096 ieee80211_wake_queues(sc->hw);
1099 static void ath_radio_disable(struct ath_softc *sc)
1101 struct ath_hal *ah = sc->sc_ah;
1105 ieee80211_stop_queues(sc->hw);
1108 ath9k_hw_set_gpio(ah, ATH_LED_PIN, 1);
1109 ath9k_hw_cfg_gpio_input(ah, ATH_LED_PIN);
1111 /* Disable interrupts */
1112 ath9k_hw_set_interrupts(ah, 0);
1114 ath_draintxq(sc, false); /* clear pending tx frames */
1115 ath_stoprecv(sc); /* turn off frame recv */
1116 ath_flushrecv(sc); /* flush recv queue */
1118 spin_lock_bh(&sc->sc_resetlock);
1119 if (!ath9k_hw_reset(ah, ah->ah_curchan,
1121 sc->sc_tx_chainmask,
1122 sc->sc_rx_chainmask,
1123 sc->sc_ht_extprotspacing,
1125 DPRINTF(sc, ATH_DBG_FATAL,
1126 "Unable to reset channel %u (%uMhz) "
1127 "flags 0x%x hal status %u\n",
1128 ath9k_hw_mhz2ieee(ah,
1129 ah->ah_curchan->channel,
1130 ah->ah_curchan->channelFlags),
1131 ah->ah_curchan->channel,
1132 ah->ah_curchan->channelFlags, status);
1134 spin_unlock_bh(&sc->sc_resetlock);
1136 ath9k_hw_phy_disable(ah);
1137 ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
1140 static bool ath_is_rfkill_set(struct ath_softc *sc)
1142 struct ath_hal *ah = sc->sc_ah;
1144 return ath9k_hw_gpio_get(ah, ah->ah_rfkill_gpio) ==
1145 ah->ah_rfkill_polarity;
1148 /* h/w rfkill poll function */
1149 static void ath_rfkill_poll(struct work_struct *work)
1151 struct ath_softc *sc = container_of(work, struct ath_softc,
1152 rf_kill.rfkill_poll.work);
1155 if (sc->sc_flags & SC_OP_INVALID)
1158 radio_on = !ath_is_rfkill_set(sc);
1161 * enable/disable radio only when there is a
1162 * state change in RF switch
1164 if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
1165 enum rfkill_state state;
1167 if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
1168 state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
1169 : RFKILL_STATE_HARD_BLOCKED;
1170 } else if (radio_on) {
1171 ath_radio_enable(sc);
1172 state = RFKILL_STATE_UNBLOCKED;
1174 ath_radio_disable(sc);
1175 state = RFKILL_STATE_HARD_BLOCKED;
1178 if (state == RFKILL_STATE_HARD_BLOCKED)
1179 sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
1181 sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
1183 rfkill_force_state(sc->rf_kill.rfkill, state);
1186 queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
1187 msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
1190 /* s/w rfkill handler */
1191 static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
1193 struct ath_softc *sc = data;
1196 case RFKILL_STATE_SOFT_BLOCKED:
1197 if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
1198 SC_OP_RFKILL_SW_BLOCKED)))
1199 ath_radio_disable(sc);
1200 sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
1202 case RFKILL_STATE_UNBLOCKED:
1203 if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
1204 sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
1205 if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
1206 DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
1207 "radio as it is disabled by h/w\n");
1210 ath_radio_enable(sc);
1218 /* Init s/w rfkill */
1219 static int ath_init_sw_rfkill(struct ath_softc *sc)
1221 sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
1223 if (!sc->rf_kill.rfkill) {
1224 DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
1228 snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
1229 "ath9k-%s:rfkill", wiphy_name(sc->hw->wiphy));
1230 sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
1231 sc->rf_kill.rfkill->data = sc;
1232 sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
1233 sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
1234 sc->rf_kill.rfkill->user_claim_unsupported = 1;
1239 /* Deinitialize rfkill */
1240 static void ath_deinit_rfkill(struct ath_softc *sc)
1242 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1243 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
1245 if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
1246 rfkill_unregister(sc->rf_kill.rfkill);
1247 sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
1248 sc->rf_kill.rfkill = NULL;
1252 static int ath_start_rfkill_poll(struct ath_softc *sc)
1254 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1255 queue_delayed_work(sc->hw->workqueue,
1256 &sc->rf_kill.rfkill_poll, 0);
1258 if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
1259 if (rfkill_register(sc->rf_kill.rfkill)) {
1260 DPRINTF(sc, ATH_DBG_FATAL,
1261 "Unable to register rfkill\n");
1262 rfkill_free(sc->rf_kill.rfkill);
1264 /* Deinitialize the device */
1267 free_irq(sc->pdev->irq, sc);
1268 pci_iounmap(sc->pdev, sc->mem);
1269 pci_release_region(sc->pdev, 0);
1270 pci_disable_device(sc->pdev);
1271 ieee80211_free_hw(sc->hw);
1274 sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
1280 #endif /* CONFIG_RFKILL */
1282 static void ath_detach(struct ath_softc *sc)
1284 struct ieee80211_hw *hw = sc->hw;
1287 DPRINTF(sc, ATH_DBG_CONFIG, "Detach ATH hw\n");
1289 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1290 ath_deinit_rfkill(sc);
1292 ath_deinit_leds(sc);
1294 ieee80211_unregister_hw(hw);
1298 tasklet_kill(&sc->intr_tq);
1299 tasklet_kill(&sc->bcon_tasklet);
1301 if (!(sc->sc_flags & SC_OP_INVALID))
1302 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
1304 /* cleanup tx queues */
1305 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1306 if (ATH_TXQ_SETUP(sc, i))
1307 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1309 ath9k_hw_detach(sc->sc_ah);
1310 ath9k_exit_debug(sc);
1313 static int ath_init(u16 devid, struct ath_softc *sc)
1315 struct ath_hal *ah = NULL;
1320 /* XXX: hardware will not be ready until ath_open() being called */
1321 sc->sc_flags |= SC_OP_INVALID;
1323 if (ath9k_init_debug(sc) < 0)
1324 printk(KERN_ERR "Unable to create debugfs files\n");
1326 spin_lock_init(&sc->sc_resetlock);
1327 tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
1328 tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet,
1332 * Cache line size is used to size and align various
1333 * structures used to communicate with the hardware.
1335 bus_read_cachesize(sc, &csz);
1336 /* XXX assert csz is non-zero */
1337 sc->sc_cachelsz = csz << 2; /* convert to bytes */
1339 ah = ath9k_hw_attach(devid, sc, sc->mem, &status);
1341 DPRINTF(sc, ATH_DBG_FATAL,
1342 "Unable to attach hardware; HAL status %u\n", status);
1348 /* Get the hardware key cache size. */
1349 sc->sc_keymax = ah->ah_caps.keycache_size;
1350 if (sc->sc_keymax > ATH_KEYMAX) {
1351 DPRINTF(sc, ATH_DBG_KEYCACHE,
1352 "Warning, using only %u entries in %u key cache\n",
1353 ATH_KEYMAX, sc->sc_keymax);
1354 sc->sc_keymax = ATH_KEYMAX;
1358 * Reset the key cache since some parts do not
1359 * reset the contents on initial power up.
1361 for (i = 0; i < sc->sc_keymax; i++)
1362 ath9k_hw_keyreset(ah, (u16) i);
1364 * Mark key cache slots associated with global keys
1365 * as in use. If we knew TKIP was not to be used we
1366 * could leave the +32, +64, and +32+64 slots free.
1368 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
1369 set_bit(i, sc->sc_keymap);
1370 set_bit(i + 64, sc->sc_keymap);
1371 if (ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT,
1373 set_bit(i + 32, sc->sc_keymap);
1374 set_bit(i + 32 + 64, sc->sc_keymap);
1378 /* Collect the channel list using the default country code */
1380 error = ath_setup_channels(sc);
1384 /* default to MONITOR mode */
1385 sc->sc_ah->ah_opmode = NL80211_IFTYPE_MONITOR;
1388 /* Setup rate tables */
1390 ath_rate_attach(sc);
1391 ath_setup_rates(sc, IEEE80211_BAND_2GHZ);
1392 ath_setup_rates(sc, IEEE80211_BAND_5GHZ);
1395 * Allocate hardware transmit queues: one queue for
1396 * beacon frames and one data queue for each QoS
1397 * priority. Note that the hal handles reseting
1398 * these queues at the needed time.
1400 sc->beacon.beaconq = ath_beaconq_setup(ah);
1401 if (sc->beacon.beaconq == -1) {
1402 DPRINTF(sc, ATH_DBG_FATAL,
1403 "Unable to setup a beacon xmit queue\n");
1407 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
1408 if (sc->beacon.cabq == NULL) {
1409 DPRINTF(sc, ATH_DBG_FATAL,
1410 "Unable to setup CAB xmit queue\n");
1415 sc->sc_config.cabqReadytime = ATH_CABQ_READY_TIME;
1416 ath_cabq_update(sc);
1418 for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++)
1419 sc->tx.hwq_map[i] = -1;
1421 /* Setup data queues */
1422 /* NB: ensure BK queue is the lowest priority h/w queue */
1423 if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) {
1424 DPRINTF(sc, ATH_DBG_FATAL,
1425 "Unable to setup xmit queue for BK traffic\n");
1430 if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) {
1431 DPRINTF(sc, ATH_DBG_FATAL,
1432 "Unable to setup xmit queue for BE traffic\n");
1436 if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) {
1437 DPRINTF(sc, ATH_DBG_FATAL,
1438 "Unable to setup xmit queue for VI traffic\n");
1442 if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) {
1443 DPRINTF(sc, ATH_DBG_FATAL,
1444 "Unable to setup xmit queue for VO traffic\n");
1449 /* Initializes the noise floor to a reasonable default value.
1450 * Later on this will be updated during ANI processing. */
1452 sc->sc_ani.sc_noise_floor = ATH_DEFAULT_NOISE_FLOOR;
1453 setup_timer(&sc->sc_ani.timer, ath_ani_calibrate, (unsigned long)sc);
1455 if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1456 ATH9K_CIPHER_TKIP, NULL)) {
1458 * Whether we should enable h/w TKIP MIC.
1459 * XXX: if we don't support WME TKIP MIC, then we wouldn't
1460 * report WMM capable, so it's always safe to turn on
1461 * TKIP MIC in this case.
1463 ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC,
1468 * Check whether the separate key cache entries
1469 * are required to handle both tx+rx MIC keys.
1470 * With split mic keys the number of stations is limited
1471 * to 27 otherwise 59.
1473 if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1474 ATH9K_CIPHER_TKIP, NULL)
1475 && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1476 ATH9K_CIPHER_MIC, NULL)
1477 && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT,
1479 sc->sc_splitmic = 1;
1481 /* turn on mcast key search if possible */
1482 if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
1483 (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1,
1486 sc->sc_config.txpowlimit = ATH_TXPOWER_MAX;
1487 sc->sc_config.txpowlimit_override = 0;
1489 /* 11n Capabilities */
1490 if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) {
1491 sc->sc_flags |= SC_OP_TXAGGR;
1492 sc->sc_flags |= SC_OP_RXAGGR;
1495 sc->sc_tx_chainmask = ah->ah_caps.tx_chainmask;
1496 sc->sc_rx_chainmask = ah->ah_caps.rx_chainmask;
1498 ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL);
1499 sc->rx.defant = ath9k_hw_getdefantenna(ah);
1501 ath9k_hw_getmac(ah, sc->sc_myaddr);
1502 if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) {
1503 ath9k_hw_getbssidmask(ah, sc->sc_bssidmask);
1504 ATH_SET_VAP_BSSID_MASK(sc->sc_bssidmask);
1505 ath9k_hw_setbssidmask(ah, sc->sc_bssidmask);
1508 sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */
1510 /* initialize beacon slots */
1511 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
1512 sc->beacon.bslot[i] = ATH_IF_ID_ANY;
1514 /* save MISC configurations */
1515 sc->sc_config.swBeaconProcess = 1;
1517 /* setup channels and rates */
1519 sc->sbands[IEEE80211_BAND_2GHZ].channels =
1520 sc->channels[IEEE80211_BAND_2GHZ];
1521 sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
1522 sc->rates[IEEE80211_BAND_2GHZ];
1523 sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
1525 if (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
1526 sc->sbands[IEEE80211_BAND_5GHZ].channels =
1527 sc->channels[IEEE80211_BAND_5GHZ];
1528 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
1529 sc->rates[IEEE80211_BAND_5GHZ];
1530 sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
1535 /* cleanup tx queues */
1536 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1537 if (ATH_TXQ_SETUP(sc, i))
1538 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1541 ath9k_hw_detach(ah);
1546 static int ath_attach(u16 devid, struct ath_softc *sc)
1548 struct ieee80211_hw *hw = sc->hw;
1551 DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n");
1553 error = ath_init(devid, sc);
1557 /* get mac address from hardware and set in mac80211 */
1559 SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
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;
1566 hw->wiphy->interface_modes =
1567 BIT(NL80211_IFTYPE_AP) |
1568 BIT(NL80211_IFTYPE_STATION) |
1569 BIT(NL80211_IFTYPE_ADHOC);
1573 hw->max_rate_tries = ATH_11N_TXMAXTRY;
1574 hw->sta_data_size = sizeof(struct ath_node);
1575 hw->vif_data_size = sizeof(struct ath_vap);
1577 hw->rate_control_algorithm = "ath9k_rate_control";
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);
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];
1590 /* initialize tx/rx engine */
1591 error = ath_tx_init(sc, ATH_TXBUF);
1595 error = ath_rx_init(sc, ATH_RXBUF);
1599 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
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);
1604 /* Initialize s/w rfkill */
1605 if (ath_init_sw_rfkill(sc))
1609 error = ieee80211_register_hw(hw);
1611 /* Initialize LED control */
1620 int ath_reset(struct ath_softc *sc, bool retry_tx)
1622 struct ath_hal *ah = sc->sc_ah;
1626 ath9k_hw_set_interrupts(ah, 0);
1627 ath_draintxq(sc, retry_tx);
1631 spin_lock_bh(&sc->sc_resetlock);
1632 if (!ath9k_hw_reset(ah, sc->sc_ah->ah_curchan,
1634 sc->sc_tx_chainmask, sc->sc_rx_chainmask,
1635 sc->sc_ht_extprotspacing, false, &status)) {
1636 DPRINTF(sc, ATH_DBG_FATAL,
1637 "Unable to reset hardware; hal status %u\n", status);
1640 spin_unlock_bh(&sc->sc_resetlock);
1642 if (ath_startrecv(sc) != 0)
1643 DPRINTF(sc, ATH_DBG_FATAL, "Unable to start recv logic\n");
1646 * We may be doing a reset in response to a request
1647 * that changes the channel so update any state that
1648 * might change as a result.
1650 ath_setcurmode(sc, ath_chan2mode(sc->sc_ah->ah_curchan));
1652 ath_update_txpow(sc);
1654 if (sc->sc_flags & SC_OP_BEACONS)
1655 ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */
1657 ath9k_hw_set_interrupts(ah, sc->sc_imask);
1661 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1662 if (ATH_TXQ_SETUP(sc, i)) {
1663 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1664 ath_txq_schedule(sc, &sc->tx.txq[i]);
1665 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
1674 * This function will allocate both the DMA descriptor structure, and the
1675 * buffers it contains. These are used to contain the descriptors used
1678 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
1679 struct list_head *head, const char *name,
1680 int nbuf, int ndesc)
1682 #define DS2PHYS(_dd, _ds) \
1683 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
1684 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
1685 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
1687 struct ath_desc *ds;
1689 int i, bsize, error;
1691 DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
1694 /* ath_desc must be a multiple of DWORDs */
1695 if ((sizeof(struct ath_desc) % 4) != 0) {
1696 DPRINTF(sc, ATH_DBG_FATAL, "ath_desc not DWORD aligned\n");
1697 ASSERT((sizeof(struct ath_desc) % 4) == 0);
1703 dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc;
1706 * Need additional DMA memory because we can't use
1707 * descriptors that cross the 4K page boundary. Assume
1708 * one skipped descriptor per 4K page.
1710 if (!(sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
1712 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
1715 while (ndesc_skipped) {
1716 dma_len = ndesc_skipped * sizeof(struct ath_desc);
1717 dd->dd_desc_len += dma_len;
1719 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
1723 /* allocate descriptors */
1724 dd->dd_desc = pci_alloc_consistent(sc->pdev,
1726 &dd->dd_desc_paddr);
1727 if (dd->dd_desc == NULL) {
1732 DPRINTF(sc, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
1733 dd->dd_name, ds, (u32) dd->dd_desc_len,
1734 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
1736 /* allocate buffers */
1737 bsize = sizeof(struct ath_buf) * nbuf;
1738 bf = kmalloc(bsize, GFP_KERNEL);
1743 memset(bf, 0, bsize);
1746 INIT_LIST_HEAD(head);
1747 for (i = 0; i < nbuf; i++, bf++, ds += ndesc) {
1749 bf->bf_daddr = DS2PHYS(dd, ds);
1751 if (!(sc->sc_ah->ah_caps.hw_caps &
1752 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
1754 * Skip descriptor addresses which can cause 4KB
1755 * boundary crossing (addr + length) with a 32 dword
1758 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
1759 ASSERT((caddr_t) bf->bf_desc <
1760 ((caddr_t) dd->dd_desc +
1765 bf->bf_daddr = DS2PHYS(dd, ds);
1768 list_add_tail(&bf->list, head);
1772 pci_free_consistent(sc->pdev,
1773 dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr);
1775 memset(dd, 0, sizeof(*dd));
1777 #undef ATH_DESC_4KB_BOUND_CHECK
1778 #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED
1782 void ath_descdma_cleanup(struct ath_softc *sc,
1783 struct ath_descdma *dd,
1784 struct list_head *head)
1786 pci_free_consistent(sc->pdev,
1787 dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr);
1789 INIT_LIST_HEAD(head);
1790 kfree(dd->dd_bufptr);
1791 memset(dd, 0, sizeof(*dd));
1794 int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
1800 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO];
1803 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI];
1806 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
1809 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK];
1812 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
1819 int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
1824 case ATH9K_WME_AC_VO:
1827 case ATH9K_WME_AC_VI:
1830 case ATH9K_WME_AC_BE:
1833 case ATH9K_WME_AC_BK:
1844 /**********************/
1845 /* mac80211 callbacks */
1846 /**********************/
1848 static int ath9k_start(struct ieee80211_hw *hw)
1850 struct ath_softc *sc = hw->priv;
1851 struct ieee80211_channel *curchan = hw->conf.channel;
1852 struct ath9k_channel *init_channel;
1853 int error = 0, pos, status;
1855 DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with "
1856 "initial channel: %d MHz\n", curchan->center_freq);
1858 /* setup initial channel */
1860 pos = ath_get_channel(sc, curchan);
1862 DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n", curchan->center_freq);
1867 sc->tx_chan_width = ATH9K_HT_MACMODE_20;
1868 sc->sc_ah->ah_channels[pos].chanmode =
1869 (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
1870 init_channel = &sc->sc_ah->ah_channels[pos];
1872 /* Reset SERDES registers */
1873 ath9k_hw_configpcipowersave(sc->sc_ah, 0);
1876 * The basic interface to setting the hardware in a good
1877 * state is ``reset''. On return the hardware is known to
1878 * be powered up and with interrupts disabled. This must
1879 * be followed by initialization of the appropriate bits
1880 * and then setup of the interrupt mask.
1882 spin_lock_bh(&sc->sc_resetlock);
1883 if (!ath9k_hw_reset(sc->sc_ah, init_channel,
1885 sc->sc_tx_chainmask, sc->sc_rx_chainmask,
1886 sc->sc_ht_extprotspacing, false, &status)) {
1887 DPRINTF(sc, ATH_DBG_FATAL,
1888 "Unable to reset hardware; hal status %u "
1889 "(freq %u flags 0x%x)\n", status,
1890 init_channel->channel, init_channel->channelFlags);
1892 spin_unlock_bh(&sc->sc_resetlock);
1895 spin_unlock_bh(&sc->sc_resetlock);
1898 * This is needed only to setup initial state
1899 * but it's best done after a reset.
1901 ath_update_txpow(sc);
1904 * Setup the hardware after reset:
1905 * The receive engine is set going.
1906 * Frame transmit is handled entirely
1907 * in the frame output path; there's nothing to do
1908 * here except setup the interrupt mask.
1910 if (ath_startrecv(sc) != 0) {
1911 DPRINTF(sc, ATH_DBG_FATAL,
1912 "Unable to start recv logic\n");
1917 /* Setup our intr mask. */
1918 sc->sc_imask = ATH9K_INT_RX | ATH9K_INT_TX
1919 | ATH9K_INT_RXEOL | ATH9K_INT_RXORN
1920 | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL;
1922 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_GTT)
1923 sc->sc_imask |= ATH9K_INT_GTT;
1925 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)
1926 sc->sc_imask |= ATH9K_INT_CST;
1929 * Enable MIB interrupts when there are hardware phy counters.
1930 * Note we only do this (at the moment) for station mode.
1932 if (ath9k_hw_phycounters(sc->sc_ah) &&
1933 ((sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) ||
1934 (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC)))
1935 sc->sc_imask |= ATH9K_INT_MIB;
1937 * Some hardware processes the TIM IE and fires an
1938 * interrupt when the TIM bit is set. For hardware
1939 * that does, if not overridden by configuration,
1940 * enable the TIM interrupt when operating as station.
1942 if ((sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) &&
1943 (sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) &&
1944 !sc->sc_config.swBeaconProcess)
1945 sc->sc_imask |= ATH9K_INT_TIM;
1947 ath_setcurmode(sc, ath_chan2mode(init_channel));
1949 sc->sc_flags &= ~SC_OP_INVALID;
1951 /* Disable BMISS interrupt when we're not associated */
1952 sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1953 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask);
1955 ieee80211_wake_queues(sc->hw);
1957 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
1958 error = ath_start_rfkill_poll(sc);
1965 static int ath9k_tx(struct ieee80211_hw *hw,
1966 struct sk_buff *skb)
1968 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1969 struct ath_softc *sc = hw->priv;
1970 struct ath_tx_control txctl;
1971 int hdrlen, padsize;
1973 memset(&txctl, 0, sizeof(struct ath_tx_control));
1976 * As a temporary workaround, assign seq# here; this will likely need
1977 * to be cleaned up to work better with Beacon transmission and virtual
1980 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1981 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1982 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1983 sc->tx.seq_no += 0x10;
1984 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1985 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
1988 /* Add the padding after the header if this is not already done */
1989 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1991 padsize = hdrlen % 4;
1992 if (skb_headroom(skb) < padsize)
1994 skb_push(skb, padsize);
1995 memmove(skb->data, skb->data + padsize, hdrlen);
1998 /* Check if a tx queue is available */
2000 txctl.txq = ath_test_get_txq(sc, skb);
2004 DPRINTF(sc, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
2006 if (ath_tx_start(sc, skb, &txctl) != 0) {
2007 DPRINTF(sc, ATH_DBG_XMIT, "TX failed\n");
2013 dev_kfree_skb_any(skb);
2017 static void ath9k_stop(struct ieee80211_hw *hw)
2019 struct ath_softc *sc = hw->priv;
2021 if (sc->sc_flags & SC_OP_INVALID) {
2022 DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
2026 DPRINTF(sc, ATH_DBG_CONFIG, "Cleaning up\n");
2028 ieee80211_stop_queues(sc->hw);
2030 /* make sure h/w will not generate any interrupt
2031 * before setting the invalid flag. */
2032 ath9k_hw_set_interrupts(sc->sc_ah, 0);
2034 if (!(sc->sc_flags & SC_OP_INVALID)) {
2035 ath_draintxq(sc, false);
2037 ath9k_hw_phy_disable(sc->sc_ah);
2039 sc->rx.rxlink = NULL;
2041 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2042 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
2043 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
2045 /* disable HAL and put h/w to sleep */
2046 ath9k_hw_disable(sc->sc_ah);
2047 ath9k_hw_configpcipowersave(sc->sc_ah, 1);
2049 sc->sc_flags |= SC_OP_INVALID;
2051 DPRINTF(sc, ATH_DBG_CONFIG, "Driver halt\n");
2054 static int ath9k_add_interface(struct ieee80211_hw *hw,
2055 struct ieee80211_if_init_conf *conf)
2057 struct ath_softc *sc = hw->priv;
2058 struct ath_vap *avp = (void *)conf->vif->drv_priv;
2059 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
2061 /* Support only vap for now */
2066 switch (conf->type) {
2067 case NL80211_IFTYPE_STATION:
2068 ic_opmode = NL80211_IFTYPE_STATION;
2070 case NL80211_IFTYPE_ADHOC:
2071 ic_opmode = NL80211_IFTYPE_ADHOC;
2073 case NL80211_IFTYPE_AP:
2074 ic_opmode = NL80211_IFTYPE_AP;
2077 DPRINTF(sc, ATH_DBG_FATAL,
2078 "Interface type %d not yet supported\n", conf->type);
2082 DPRINTF(sc, ATH_DBG_CONFIG, "Attach a VAP of type: %d\n", ic_opmode);
2084 /* Set the VAP opmode */
2085 avp->av_opmode = ic_opmode;
2088 if (ic_opmode == NL80211_IFTYPE_AP)
2089 ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
2091 sc->sc_vaps[0] = conf->vif;
2094 /* Set the device opmode */
2095 sc->sc_ah->ah_opmode = ic_opmode;
2097 if (conf->type == NL80211_IFTYPE_AP) {
2098 /* TODO: is this a suitable place to start ANI for AP mode? */
2100 mod_timer(&sc->sc_ani.timer,
2101 jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
2107 static void ath9k_remove_interface(struct ieee80211_hw *hw,
2108 struct ieee80211_if_init_conf *conf)
2110 struct ath_softc *sc = hw->priv;
2111 struct ath_vap *avp = (void *)conf->vif->drv_priv;
2113 DPRINTF(sc, ATH_DBG_CONFIG, "Detach Interface\n");
2116 del_timer_sync(&sc->sc_ani.timer);
2118 /* Reclaim beacon resources */
2119 if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP ||
2120 sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC) {
2121 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2122 ath_beacon_return(sc, avp);
2125 sc->sc_flags &= ~SC_OP_BEACONS;
2127 sc->sc_vaps[0] = NULL;
2131 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
2133 struct ath_softc *sc = hw->priv;
2134 struct ieee80211_conf *conf = &hw->conf;
2136 if (changed & (IEEE80211_CONF_CHANGE_CHANNEL |
2137 IEEE80211_CONF_CHANGE_HT)) {
2138 struct ieee80211_channel *curchan = hw->conf.channel;
2141 DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
2142 curchan->center_freq);
2144 pos = ath_get_channel(sc, curchan);
2146 DPRINTF(sc, ATH_DBG_FATAL, "Invalid channel: %d\n",
2147 curchan->center_freq);
2151 sc->tx_chan_width = ATH9K_HT_MACMODE_20;
2152 sc->sc_ah->ah_channels[pos].chanmode =
2153 (curchan->band == IEEE80211_BAND_2GHZ) ?
2154 CHANNEL_G : CHANNEL_A;
2156 if (conf->ht.enabled) {
2157 if (conf->ht.channel_type == NL80211_CHAN_HT40PLUS ||
2158 conf->ht.channel_type == NL80211_CHAN_HT40MINUS)
2159 sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
2161 sc->sc_ah->ah_channels[pos].chanmode =
2162 ath_get_extchanmode(sc, curchan,
2163 conf->ht.channel_type);
2166 if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) {
2167 DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n");
2171 ath_update_chainmask(sc, conf->ht.enabled);
2174 if (changed & IEEE80211_CONF_CHANGE_POWER)
2175 sc->sc_config.txpowlimit = 2 * conf->power_level;
2180 static int ath9k_config_interface(struct ieee80211_hw *hw,
2181 struct ieee80211_vif *vif,
2182 struct ieee80211_if_conf *conf)
2184 struct ath_softc *sc = hw->priv;
2185 struct ath_hal *ah = sc->sc_ah;
2186 struct ath_vap *avp = (void *)vif->drv_priv;
2190 /* TODO: Need to decide which hw opmode to use for multi-interface
2192 if (vif->type == NL80211_IFTYPE_AP &&
2193 ah->ah_opmode != NL80211_IFTYPE_AP) {
2194 ah->ah_opmode = NL80211_IFTYPE_STATION;
2195 ath9k_hw_setopmode(ah);
2196 ath9k_hw_write_associd(ah, sc->sc_myaddr, 0);
2197 /* Request full reset to get hw opmode changed properly */
2198 sc->sc_flags |= SC_OP_FULL_RESET;
2201 if ((conf->changed & IEEE80211_IFCC_BSSID) &&
2202 !is_zero_ether_addr(conf->bssid)) {
2203 switch (vif->type) {
2204 case NL80211_IFTYPE_STATION:
2205 case NL80211_IFTYPE_ADHOC:
2207 memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
2209 ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
2212 /* Set aggregation protection mode parameters */
2213 sc->sc_config.ath_aggr_prot = 0;
2215 DPRINTF(sc, ATH_DBG_CONFIG,
2216 "RX filter 0x%x bssid %pM aid 0x%x\n",
2217 rfilt, sc->sc_curbssid, sc->sc_curaid);
2219 /* need to reconfigure the beacon */
2220 sc->sc_flags &= ~SC_OP_BEACONS ;
2228 if ((conf->changed & IEEE80211_IFCC_BEACON) &&
2229 ((vif->type == NL80211_IFTYPE_ADHOC) ||
2230 (vif->type == NL80211_IFTYPE_AP))) {
2232 * Allocate and setup the beacon frame.
2234 * Stop any previous beacon DMA. This may be
2235 * necessary, for example, when an ibss merge
2236 * causes reconfiguration; we may be called
2237 * with beacon transmission active.
2239 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2241 error = ath_beacon_alloc(sc, 0);
2245 ath_beacon_sync(sc, 0);
2248 /* Check for WLAN_CAPABILITY_PRIVACY ? */
2249 if ((avp->av_opmode != NL80211_IFTYPE_STATION)) {
2250 for (i = 0; i < IEEE80211_WEP_NKID; i++)
2251 if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
2252 ath9k_hw_keysetmac(sc->sc_ah,
2257 /* Only legacy IBSS for now */
2258 if (vif->type == NL80211_IFTYPE_ADHOC)
2259 ath_update_chainmask(sc, 0);
2264 #define SUPPORTED_FILTERS \
2265 (FIF_PROMISC_IN_BSS | \
2269 FIF_BCN_PRBRESP_PROMISC | \
2272 /* FIXME: sc->sc_full_reset ? */
2273 static void ath9k_configure_filter(struct ieee80211_hw *hw,
2274 unsigned int changed_flags,
2275 unsigned int *total_flags,
2277 struct dev_mc_list *mclist)
2279 struct ath_softc *sc = hw->priv;
2282 changed_flags &= SUPPORTED_FILTERS;
2283 *total_flags &= SUPPORTED_FILTERS;
2285 sc->rx.rxfilter = *total_flags;
2286 rfilt = ath_calcrxfilter(sc);
2287 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
2289 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2290 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2291 ath9k_hw_write_associd(sc->sc_ah, ath_bcast_mac, 0);
2294 DPRINTF(sc, ATH_DBG_CONFIG, "Set HW RX filter: 0x%x\n", sc->rx.rxfilter);
2297 static void ath9k_sta_notify(struct ieee80211_hw *hw,
2298 struct ieee80211_vif *vif,
2299 enum sta_notify_cmd cmd,
2300 struct ieee80211_sta *sta)
2302 struct ath_softc *sc = hw->priv;
2305 case STA_NOTIFY_ADD:
2306 ath_node_attach(sc, sta);
2308 case STA_NOTIFY_REMOVE:
2309 ath_node_detach(sc, sta);
2316 static int ath9k_conf_tx(struct ieee80211_hw *hw,
2318 const struct ieee80211_tx_queue_params *params)
2320 struct ath_softc *sc = hw->priv;
2321 struct ath9k_tx_queue_info qi;
2324 if (queue >= WME_NUM_AC)
2327 qi.tqi_aifs = params->aifs;
2328 qi.tqi_cwmin = params->cw_min;
2329 qi.tqi_cwmax = params->cw_max;
2330 qi.tqi_burstTime = params->txop;
2331 qnum = ath_get_hal_qnum(queue, sc);
2333 DPRINTF(sc, ATH_DBG_CONFIG,
2334 "Configure tx [queue/halq] [%d/%d], "
2335 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
2336 queue, qnum, params->aifs, params->cw_min,
2337 params->cw_max, params->txop);
2339 ret = ath_txq_update(sc, qnum, &qi);
2341 DPRINTF(sc, ATH_DBG_FATAL, "TXQ Update failed\n");
2346 static int ath9k_set_key(struct ieee80211_hw *hw,
2347 enum set_key_cmd cmd,
2348 const u8 *local_addr,
2350 struct ieee80211_key_conf *key)
2352 struct ath_softc *sc = hw->priv;
2355 DPRINTF(sc, ATH_DBG_KEYCACHE, "Set HW Key\n");
2359 ret = ath_key_config(sc, addr, key);
2361 key->hw_key_idx = ret;
2362 /* push IV and Michael MIC generation to stack */
2363 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2364 if (key->alg == ALG_TKIP)
2365 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2370 ath_key_delete(sc, key);
2379 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
2380 struct ieee80211_vif *vif,
2381 struct ieee80211_bss_conf *bss_conf,
2384 struct ath_softc *sc = hw->priv;
2386 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2387 DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
2388 bss_conf->use_short_preamble);
2389 if (bss_conf->use_short_preamble)
2390 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
2392 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
2395 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2396 DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
2397 bss_conf->use_cts_prot);
2398 if (bss_conf->use_cts_prot &&
2399 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
2400 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
2402 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
2405 if (changed & BSS_CHANGED_ASSOC) {
2406 DPRINTF(sc, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
2408 ath9k_bss_assoc_info(sc, vif, bss_conf);
2412 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
2415 struct ath_softc *sc = hw->priv;
2416 struct ath_hal *ah = sc->sc_ah;
2418 tsf = ath9k_hw_gettsf64(ah);
2423 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
2425 struct ath_softc *sc = hw->priv;
2426 struct ath_hal *ah = sc->sc_ah;
2428 ath9k_hw_reset_tsf(ah);
2431 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
2432 enum ieee80211_ampdu_mlme_action action,
2433 struct ieee80211_sta *sta,
2436 struct ath_softc *sc = hw->priv;
2440 case IEEE80211_AMPDU_RX_START:
2441 if (!(sc->sc_flags & SC_OP_RXAGGR))
2444 case IEEE80211_AMPDU_RX_STOP:
2446 case IEEE80211_AMPDU_TX_START:
2447 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
2449 DPRINTF(sc, ATH_DBG_FATAL,
2450 "Unable to start TX aggregation\n");
2452 ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
2454 case IEEE80211_AMPDU_TX_STOP:
2455 ret = ath_tx_aggr_stop(sc, sta, tid);
2457 DPRINTF(sc, ATH_DBG_FATAL,
2458 "Unable to stop TX aggregation\n");
2460 ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
2462 case IEEE80211_AMPDU_TX_RESUME:
2463 ath_tx_aggr_resume(sc, sta, tid);
2466 DPRINTF(sc, ATH_DBG_FATAL, "Unknown AMPDU action\n");
2472 static struct ieee80211_ops ath9k_ops = {
2474 .start = ath9k_start,
2476 .add_interface = ath9k_add_interface,
2477 .remove_interface = ath9k_remove_interface,
2478 .config = ath9k_config,
2479 .config_interface = ath9k_config_interface,
2480 .configure_filter = ath9k_configure_filter,
2481 .sta_notify = ath9k_sta_notify,
2482 .conf_tx = ath9k_conf_tx,
2483 .bss_info_changed = ath9k_bss_info_changed,
2484 .set_key = ath9k_set_key,
2485 .get_tsf = ath9k_get_tsf,
2486 .reset_tsf = ath9k_reset_tsf,
2487 .ampdu_action = ath9k_ampdu_action,
2493 } ath_mac_bb_names[] = {
2494 { AR_SREV_VERSION_5416_PCI, "5416" },
2495 { AR_SREV_VERSION_5416_PCIE, "5418" },
2496 { AR_SREV_VERSION_9100, "9100" },
2497 { AR_SREV_VERSION_9160, "9160" },
2498 { AR_SREV_VERSION_9280, "9280" },
2499 { AR_SREV_VERSION_9285, "9285" }
2505 } ath_rf_names[] = {
2507 { AR_RAD5133_SREV_MAJOR, "5133" },
2508 { AR_RAD5122_SREV_MAJOR, "5122" },
2509 { AR_RAD2133_SREV_MAJOR, "2133" },
2510 { AR_RAD2122_SREV_MAJOR, "2122" }
2514 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2517 ath_mac_bb_name(u32 mac_bb_version)
2521 for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
2522 if (ath_mac_bb_names[i].version == mac_bb_version) {
2523 return ath_mac_bb_names[i].name;
2531 * Return the RF name. "????" is returned if the RF is unknown.
2534 ath_rf_name(u16 rf_version)
2538 for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
2539 if (ath_rf_names[i].version == rf_version) {
2540 return ath_rf_names[i].name;
2547 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2550 struct ath_softc *sc;
2551 struct ieee80211_hw *hw;
2557 if (pci_enable_device(pdev))
2560 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2563 printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
2567 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2570 printk(KERN_ERR "ath9k: 32-bit DMA consistent "
2571 "DMA enable failed\n");
2576 * Cache line size is used to size and align various
2577 * structures used to communicate with the hardware.
2579 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
2582 * Linux 2.4.18 (at least) writes the cache line size
2583 * register as a 16-bit wide register which is wrong.
2584 * We must have this setup properly for rx buffer
2585 * DMA to work so force a reasonable value here if it
2588 csz = L1_CACHE_BYTES / sizeof(u32);
2589 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
2592 * The default setting of latency timer yields poor results,
2593 * set it to the value used by other systems. It may be worth
2594 * tweaking this setting more.
2596 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
2598 pci_set_master(pdev);
2601 * Disable the RETRY_TIMEOUT register (0x41) to keep
2602 * PCI Tx retries from interfering with C3 CPU state.
2604 pci_read_config_dword(pdev, 0x40, &val);
2605 if ((val & 0x0000ff00) != 0)
2606 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2608 ret = pci_request_region(pdev, 0, "ath9k");
2610 dev_err(&pdev->dev, "PCI memory region reserve error\n");
2615 mem = pci_iomap(pdev, 0, 0);
2617 printk(KERN_ERR "PCI memory map error\n") ;
2622 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
2624 printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
2628 SET_IEEE80211_DEV(hw, &pdev->dev);
2629 pci_set_drvdata(pdev, hw);
2636 if (ath_attach(id->device, sc) != 0) {
2641 /* setup interrupt service routine */
2643 if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
2644 printk(KERN_ERR "%s: request_irq failed\n",
2645 wiphy_name(hw->wiphy));
2652 "%s: Atheros AR%s MAC/BB Rev:%x "
2653 "AR%s RF Rev:%x: mem=0x%lx, irq=%d\n",
2654 wiphy_name(hw->wiphy),
2655 ath_mac_bb_name(ah->ah_macVersion),
2657 ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
2659 (unsigned long)mem, pdev->irq);
2665 ieee80211_free_hw(hw);
2667 pci_iounmap(pdev, mem);
2669 pci_release_region(pdev, 0);
2671 pci_disable_device(pdev);
2675 static void ath_pci_remove(struct pci_dev *pdev)
2677 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2678 struct ath_softc *sc = hw->priv;
2682 free_irq(pdev->irq, sc);
2683 pci_iounmap(pdev, sc->mem);
2684 pci_release_region(pdev, 0);
2685 pci_disable_device(pdev);
2686 ieee80211_free_hw(hw);
2691 static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2693 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2694 struct ath_softc *sc = hw->priv;
2696 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
2698 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2699 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
2700 cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
2703 pci_save_state(pdev);
2704 pci_disable_device(pdev);
2705 pci_set_power_state(pdev, 3);
2710 static int ath_pci_resume(struct pci_dev *pdev)
2712 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
2713 struct ath_softc *sc = hw->priv;
2717 err = pci_enable_device(pdev);
2720 pci_restore_state(pdev);
2722 * Suspend/Resume resets the PCI configuration space, so we have to
2723 * re-disable the RETRY_TIMEOUT register (0x41) to keep
2724 * PCI Tx retries from interfering with C3 CPU state
2726 pci_read_config_dword(pdev, 0x40, &val);
2727 if ((val & 0x0000ff00) != 0)
2728 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2731 ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,
2732 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
2733 ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
2735 #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
2737 * check the h/w rfkill state on resume
2738 * and start the rfkill poll timer
2740 if (sc->sc_ah->ah_caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
2741 queue_delayed_work(sc->hw->workqueue,
2742 &sc->rf_kill.rfkill_poll, 0);
2748 #endif /* CONFIG_PM */
2750 MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
2752 static struct pci_driver ath_pci_driver = {
2754 .id_table = ath_pci_id_table,
2755 .probe = ath_pci_probe,
2756 .remove = ath_pci_remove,
2758 .suspend = ath_pci_suspend,
2759 .resume = ath_pci_resume,
2760 #endif /* CONFIG_PM */
2763 static int __init init_ath_pci(void)
2767 printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
2769 /* Register rate control algorithm */
2770 error = ath_rate_control_register();
2773 "Unable to register rate control algorithm: %d\n",
2775 ath_rate_control_unregister();
2779 if (pci_register_driver(&ath_pci_driver) < 0) {
2781 "ath_pci: No devices found, driver not installed.\n");
2782 ath_rate_control_unregister();
2783 pci_unregister_driver(&ath_pci_driver);
2789 module_init(init_ath_pci);
2791 static void __exit exit_ath_pci(void)
2793 ath_rate_control_unregister();
2794 pci_unregister_driver(&ath_pci_driver);
2795 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
2797 module_exit(exit_ath_pci);