2 * Copyright (c) 2008-2009 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>
20 #define ATH_PCI_VERSION "0.1"
22 static char *dev_info
= "ath9k";
24 MODULE_AUTHOR("Atheros Communications");
25 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
26 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
27 MODULE_LICENSE("Dual BSD/GPL");
29 static int modparam_nohwcrypt
;
30 module_param_named(nohwcrypt
, modparam_nohwcrypt
, int, 0444);
31 MODULE_PARM_DESC(nohwcrypt
, "Disable hardware encryption");
33 /* We use the hw_value as an index into our private channel structure */
35 #define CHAN2G(_freq, _idx) { \
36 .center_freq = (_freq), \
41 #define CHAN5G(_freq, _idx) { \
42 .band = IEEE80211_BAND_5GHZ, \
43 .center_freq = (_freq), \
48 /* Some 2 GHz radios are actually tunable on 2312-2732
49 * on 5 MHz steps, we support the channels which we know
50 * we have calibration data for all cards though to make
52 static struct ieee80211_channel ath9k_2ghz_chantable
[] = {
53 CHAN2G(2412, 0), /* Channel 1 */
54 CHAN2G(2417, 1), /* Channel 2 */
55 CHAN2G(2422, 2), /* Channel 3 */
56 CHAN2G(2427, 3), /* Channel 4 */
57 CHAN2G(2432, 4), /* Channel 5 */
58 CHAN2G(2437, 5), /* Channel 6 */
59 CHAN2G(2442, 6), /* Channel 7 */
60 CHAN2G(2447, 7), /* Channel 8 */
61 CHAN2G(2452, 8), /* Channel 9 */
62 CHAN2G(2457, 9), /* Channel 10 */
63 CHAN2G(2462, 10), /* Channel 11 */
64 CHAN2G(2467, 11), /* Channel 12 */
65 CHAN2G(2472, 12), /* Channel 13 */
66 CHAN2G(2484, 13), /* Channel 14 */
69 /* Some 5 GHz radios are actually tunable on XXXX-YYYY
70 * on 5 MHz steps, we support the channels which we know
71 * we have calibration data for all cards though to make
73 static struct ieee80211_channel ath9k_5ghz_chantable
[] = {
74 /* _We_ call this UNII 1 */
75 CHAN5G(5180, 14), /* Channel 36 */
76 CHAN5G(5200, 15), /* Channel 40 */
77 CHAN5G(5220, 16), /* Channel 44 */
78 CHAN5G(5240, 17), /* Channel 48 */
79 /* _We_ call this UNII 2 */
80 CHAN5G(5260, 18), /* Channel 52 */
81 CHAN5G(5280, 19), /* Channel 56 */
82 CHAN5G(5300, 20), /* Channel 60 */
83 CHAN5G(5320, 21), /* Channel 64 */
84 /* _We_ call this "Middle band" */
85 CHAN5G(5500, 22), /* Channel 100 */
86 CHAN5G(5520, 23), /* Channel 104 */
87 CHAN5G(5540, 24), /* Channel 108 */
88 CHAN5G(5560, 25), /* Channel 112 */
89 CHAN5G(5580, 26), /* Channel 116 */
90 CHAN5G(5600, 27), /* Channel 120 */
91 CHAN5G(5620, 28), /* Channel 124 */
92 CHAN5G(5640, 29), /* Channel 128 */
93 CHAN5G(5660, 30), /* Channel 132 */
94 CHAN5G(5680, 31), /* Channel 136 */
95 CHAN5G(5700, 32), /* Channel 140 */
96 /* _We_ call this UNII 3 */
97 CHAN5G(5745, 33), /* Channel 149 */
98 CHAN5G(5765, 34), /* Channel 153 */
99 CHAN5G(5785, 35), /* Channel 157 */
100 CHAN5G(5805, 36), /* Channel 161 */
101 CHAN5G(5825, 37), /* Channel 165 */
104 static void ath_cache_conf_rate(struct ath_softc
*sc
,
105 struct ieee80211_conf
*conf
)
107 switch (conf
->channel
->band
) {
108 case IEEE80211_BAND_2GHZ
:
109 if (conf_is_ht20(conf
))
111 sc
->hw_rate_table
[ATH9K_MODE_11NG_HT20
];
112 else if (conf_is_ht40_minus(conf
))
114 sc
->hw_rate_table
[ATH9K_MODE_11NG_HT40MINUS
];
115 else if (conf_is_ht40_plus(conf
))
117 sc
->hw_rate_table
[ATH9K_MODE_11NG_HT40PLUS
];
120 sc
->hw_rate_table
[ATH9K_MODE_11G
];
122 case IEEE80211_BAND_5GHZ
:
123 if (conf_is_ht20(conf
))
125 sc
->hw_rate_table
[ATH9K_MODE_11NA_HT20
];
126 else if (conf_is_ht40_minus(conf
))
128 sc
->hw_rate_table
[ATH9K_MODE_11NA_HT40MINUS
];
129 else if (conf_is_ht40_plus(conf
))
131 sc
->hw_rate_table
[ATH9K_MODE_11NA_HT40PLUS
];
134 sc
->hw_rate_table
[ATH9K_MODE_11A
];
142 static void ath_update_txpow(struct ath_softc
*sc
)
144 struct ath_hw
*ah
= sc
->sc_ah
;
147 if (sc
->curtxpow
!= sc
->config
.txpowlimit
) {
148 ath9k_hw_set_txpowerlimit(ah
, sc
->config
.txpowlimit
);
149 /* read back in case value is clamped */
150 ath9k_hw_getcapability(ah
, ATH9K_CAP_TXPOW
, 1, &txpow
);
151 sc
->curtxpow
= txpow
;
155 static u8
parse_mpdudensity(u8 mpdudensity
)
158 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
159 * 0 for no restriction
168 switch (mpdudensity
) {
174 /* Our lower layer calculations limit our precision to
190 static void ath_setup_rates(struct ath_softc
*sc
, enum ieee80211_band band
)
192 const struct ath_rate_table
*rate_table
= NULL
;
193 struct ieee80211_supported_band
*sband
;
194 struct ieee80211_rate
*rate
;
198 case IEEE80211_BAND_2GHZ
:
199 rate_table
= sc
->hw_rate_table
[ATH9K_MODE_11G
];
201 case IEEE80211_BAND_5GHZ
:
202 rate_table
= sc
->hw_rate_table
[ATH9K_MODE_11A
];
208 if (rate_table
== NULL
)
211 sband
= &sc
->sbands
[band
];
212 rate
= sc
->rates
[band
];
214 if (rate_table
->rate_cnt
> ATH_RATE_MAX
)
215 maxrates
= ATH_RATE_MAX
;
217 maxrates
= rate_table
->rate_cnt
;
219 for (i
= 0; i
< maxrates
; i
++) {
220 rate
[i
].bitrate
= rate_table
->info
[i
].ratekbps
/ 100;
221 rate
[i
].hw_value
= rate_table
->info
[i
].ratecode
;
222 if (rate_table
->info
[i
].short_preamble
) {
223 rate
[i
].hw_value_short
= rate_table
->info
[i
].ratecode
|
224 rate_table
->info
[i
].short_preamble
;
225 rate
[i
].flags
= IEEE80211_RATE_SHORT_PREAMBLE
;
229 DPRINTF(sc
, ATH_DBG_CONFIG
, "Rate: %2dMbps, ratecode: %2d\n",
230 rate
[i
].bitrate
/ 10, rate
[i
].hw_value
);
234 static struct ath9k_channel
*ath_get_curchannel(struct ath_softc
*sc
,
235 struct ieee80211_hw
*hw
)
237 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
238 struct ath9k_channel
*channel
;
241 chan_idx
= curchan
->hw_value
;
242 channel
= &sc
->sc_ah
->channels
[chan_idx
];
243 ath9k_update_ichannel(sc
, hw
, channel
);
248 * Set/change channels. If the channel is really being changed, it's done
249 * by reseting the chip. To accomplish this we must first cleanup any pending
250 * DMA, then restart stuff.
252 int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
253 struct ath9k_channel
*hchan
)
255 struct ath_hw
*ah
= sc
->sc_ah
;
256 bool fastcc
= true, stopped
;
257 struct ieee80211_channel
*channel
= hw
->conf
.channel
;
260 if (sc
->sc_flags
& SC_OP_INVALID
)
266 * This is only performed if the channel settings have
269 * To switch channels clear any pending DMA operations;
270 * wait long enough for the RX fifo to drain, reset the
271 * hardware at the new frequency, and then re-enable
272 * the relevant bits of the h/w.
274 ath9k_hw_set_interrupts(ah
, 0);
275 ath_drain_all_txq(sc
, false);
276 stopped
= ath_stoprecv(sc
);
278 /* XXX: do not flush receive queue here. We don't want
279 * to flush data frames already in queue because of
280 * changing channel. */
282 if (!stopped
|| (sc
->sc_flags
& SC_OP_FULL_RESET
))
285 DPRINTF(sc
, ATH_DBG_CONFIG
,
286 "(%u MHz) -> (%u MHz), chanwidth: %d\n",
287 sc
->sc_ah
->curchan
->channel
,
288 channel
->center_freq
, sc
->tx_chan_width
);
290 spin_lock_bh(&sc
->sc_resetlock
);
292 r
= ath9k_hw_reset(ah
, hchan
, fastcc
);
294 DPRINTF(sc
, ATH_DBG_FATAL
,
295 "Unable to reset channel (%u Mhz) "
297 channel
->center_freq
, r
);
298 spin_unlock_bh(&sc
->sc_resetlock
);
301 spin_unlock_bh(&sc
->sc_resetlock
);
303 sc
->sc_flags
&= ~SC_OP_FULL_RESET
;
305 if (ath_startrecv(sc
) != 0) {
306 DPRINTF(sc
, ATH_DBG_FATAL
,
307 "Unable to restart recv logic\n");
312 ath_cache_conf_rate(sc
, &hw
->conf
);
313 ath_update_txpow(sc
);
314 ath9k_hw_set_interrupts(ah
, sc
->imask
);
317 ath9k_ps_restore(sc
);
322 * This routine performs the periodic noise floor calibration function
323 * that is used to adjust and optimize the chip performance. This
324 * takes environmental changes (location, temperature) into account.
325 * When the task is complete, it reschedules itself depending on the
326 * appropriate interval that was calculated.
328 static void ath_ani_calibrate(unsigned long data
)
330 struct ath_softc
*sc
= (struct ath_softc
*)data
;
331 struct ath_hw
*ah
= sc
->sc_ah
;
332 bool longcal
= false;
333 bool shortcal
= false;
334 bool aniflag
= false;
335 unsigned int timestamp
= jiffies_to_msecs(jiffies
);
336 u32 cal_interval
, short_cal_interval
;
338 short_cal_interval
= (ah
->opmode
== NL80211_IFTYPE_AP
) ?
339 ATH_AP_SHORT_CALINTERVAL
: ATH_STA_SHORT_CALINTERVAL
;
342 * don't calibrate when we're scanning.
343 * we are most likely not on our home channel.
345 spin_lock(&sc
->ani_lock
);
346 if (sc
->sc_flags
& SC_OP_SCANNING
)
349 /* Only calibrate if awake */
350 if (sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)
355 /* Long calibration runs independently of short calibration. */
356 if ((timestamp
- sc
->ani
.longcal_timer
) >= ATH_LONG_CALINTERVAL
) {
358 DPRINTF(sc
, ATH_DBG_ANI
, "longcal @%lu\n", jiffies
);
359 sc
->ani
.longcal_timer
= timestamp
;
362 /* Short calibration applies only while caldone is false */
363 if (!sc
->ani
.caldone
) {
364 if ((timestamp
- sc
->ani
.shortcal_timer
) >= short_cal_interval
) {
366 DPRINTF(sc
, ATH_DBG_ANI
, "shortcal @%lu\n", jiffies
);
367 sc
->ani
.shortcal_timer
= timestamp
;
368 sc
->ani
.resetcal_timer
= timestamp
;
371 if ((timestamp
- sc
->ani
.resetcal_timer
) >=
372 ATH_RESTART_CALINTERVAL
) {
373 sc
->ani
.caldone
= ath9k_hw_reset_calvalid(ah
);
375 sc
->ani
.resetcal_timer
= timestamp
;
379 /* Verify whether we must check ANI */
380 if ((timestamp
- sc
->ani
.checkani_timer
) >= ATH_ANI_POLLINTERVAL
) {
382 sc
->ani
.checkani_timer
= timestamp
;
385 /* Skip all processing if there's nothing to do. */
386 if (longcal
|| shortcal
|| aniflag
) {
387 /* Call ANI routine if necessary */
389 ath9k_hw_ani_monitor(ah
, &sc
->nodestats
, ah
->curchan
);
391 /* Perform calibration if necessary */
392 if (longcal
|| shortcal
) {
393 sc
->ani
.caldone
= ath9k_hw_calibrate(ah
, ah
->curchan
,
394 sc
->rx_chainmask
, longcal
);
397 sc
->ani
.noise_floor
= ath9k_hw_getchan_noise(ah
,
400 DPRINTF(sc
, ATH_DBG_ANI
," calibrate chan %u/%x nf: %d\n",
401 ah
->curchan
->channel
, ah
->curchan
->channelFlags
,
402 sc
->ani
.noise_floor
);
406 ath9k_ps_restore(sc
);
409 spin_unlock(&sc
->ani_lock
);
411 * Set timer interval based on previous results.
412 * The interval must be the shortest necessary to satisfy ANI,
413 * short calibration and long calibration.
415 cal_interval
= ATH_LONG_CALINTERVAL
;
416 if (sc
->sc_ah
->config
.enable_ani
)
417 cal_interval
= min(cal_interval
, (u32
)ATH_ANI_POLLINTERVAL
);
418 if (!sc
->ani
.caldone
)
419 cal_interval
= min(cal_interval
, (u32
)short_cal_interval
);
421 mod_timer(&sc
->ani
.timer
, jiffies
+ msecs_to_jiffies(cal_interval
));
424 static void ath_start_ani(struct ath_softc
*sc
)
426 unsigned long timestamp
= jiffies_to_msecs(jiffies
);
428 sc
->ani
.longcal_timer
= timestamp
;
429 sc
->ani
.shortcal_timer
= timestamp
;
430 sc
->ani
.checkani_timer
= timestamp
;
432 mod_timer(&sc
->ani
.timer
,
433 jiffies
+ msecs_to_jiffies(ATH_ANI_POLLINTERVAL
));
437 * Update tx/rx chainmask. For legacy association,
438 * hard code chainmask to 1x1, for 11n association, use
439 * the chainmask configuration, for bt coexistence, use
440 * the chainmask configuration even in legacy mode.
442 void ath_update_chainmask(struct ath_softc
*sc
, int is_ht
)
445 (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_BT_COEX
)) {
446 sc
->tx_chainmask
= sc
->sc_ah
->caps
.tx_chainmask
;
447 sc
->rx_chainmask
= sc
->sc_ah
->caps
.rx_chainmask
;
449 sc
->tx_chainmask
= 1;
450 sc
->rx_chainmask
= 1;
453 DPRINTF(sc
, ATH_DBG_CONFIG
, "tx chmask: %d, rx chmask: %d\n",
454 sc
->tx_chainmask
, sc
->rx_chainmask
);
457 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
461 an
= (struct ath_node
*)sta
->drv_priv
;
463 if (sc
->sc_flags
& SC_OP_TXAGGR
) {
464 ath_tx_node_init(sc
, an
);
465 an
->maxampdu
= 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR
+
466 sta
->ht_cap
.ampdu_factor
);
467 an
->mpdudensity
= parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
468 an
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
472 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
474 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
476 if (sc
->sc_flags
& SC_OP_TXAGGR
)
477 ath_tx_node_cleanup(sc
, an
);
480 static void ath9k_tasklet(unsigned long data
)
482 struct ath_softc
*sc
= (struct ath_softc
*)data
;
483 u32 status
= sc
->intrstatus
;
487 if (status
& ATH9K_INT_FATAL
) {
488 ath_reset(sc
, false);
489 ath9k_ps_restore(sc
);
493 if (status
& (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
)) {
494 spin_lock_bh(&sc
->rx
.rxflushlock
);
495 ath_rx_tasklet(sc
, 0);
496 spin_unlock_bh(&sc
->rx
.rxflushlock
);
499 if (status
& ATH9K_INT_TX
)
502 if ((status
& ATH9K_INT_TSFOOR
) &&
503 (sc
->hw
->conf
.flags
& IEEE80211_CONF_PS
)) {
505 * TSF sync does not look correct; remain awake to sync with
508 DPRINTF(sc
, ATH_DBG_PS
, "TSFOOR - Sync with next Beacon\n");
509 sc
->sc_flags
|= SC_OP_WAIT_FOR_BEACON
| SC_OP_BEACON_SYNC
;
512 /* re-enable hardware interrupt */
513 ath9k_hw_set_interrupts(sc
->sc_ah
, sc
->imask
);
514 ath9k_ps_restore(sc
);
517 irqreturn_t
ath_isr(int irq
, void *dev
)
519 #define SCHED_INTR ( \
529 struct ath_softc
*sc
= dev
;
530 struct ath_hw
*ah
= sc
->sc_ah
;
531 enum ath9k_int status
;
535 * The hardware is not ready/present, don't
536 * touch anything. Note this can happen early
537 * on if the IRQ is shared.
539 if (sc
->sc_flags
& SC_OP_INVALID
)
543 /* shared irq, not for us */
545 if (!ath9k_hw_intrpend(ah
))
549 * Figure out the reason(s) for the interrupt. Note
550 * that the hal returns a pseudo-ISR that may include
551 * bits we haven't explicitly enabled so we mask the
552 * value to insure we only process bits we requested.
554 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
555 status
&= sc
->imask
; /* discard unasked-for bits */
558 * If there are no status bits set, then this interrupt was not
559 * for me (should have been caught above).
564 /* Cache the status */
565 sc
->intrstatus
= status
;
567 if (status
& SCHED_INTR
)
571 * If a FATAL or RXORN interrupt is received, we have to reset the
574 if (status
& (ATH9K_INT_FATAL
| ATH9K_INT_RXORN
))
577 if (status
& ATH9K_INT_SWBA
)
578 tasklet_schedule(&sc
->bcon_tasklet
);
580 if (status
& ATH9K_INT_TXURN
)
581 ath9k_hw_updatetxtriglevel(ah
, true);
583 if (status
& ATH9K_INT_MIB
) {
585 * Disable interrupts until we service the MIB
586 * interrupt; otherwise it will continue to
589 ath9k_hw_set_interrupts(ah
, 0);
591 * Let the hal handle the event. We assume
592 * it will clear whatever condition caused
595 ath9k_hw_procmibevent(ah
, &sc
->nodestats
);
596 ath9k_hw_set_interrupts(ah
, sc
->imask
);
599 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
600 if (status
& ATH9K_INT_TIM_TIMER
) {
601 /* Clear RxAbort bit so that we can
603 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
604 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
605 sc
->sc_flags
|= SC_OP_WAIT_FOR_BEACON
;
610 ath_debug_stat_interrupt(sc
, status
);
613 /* turn off every interrupt except SWBA */
614 ath9k_hw_set_interrupts(ah
, (sc
->imask
& ATH9K_INT_SWBA
));
615 tasklet_schedule(&sc
->intr_tq
);
623 static u32
ath_get_extchanmode(struct ath_softc
*sc
,
624 struct ieee80211_channel
*chan
,
625 enum nl80211_channel_type channel_type
)
629 switch (chan
->band
) {
630 case IEEE80211_BAND_2GHZ
:
631 switch(channel_type
) {
632 case NL80211_CHAN_NO_HT
:
633 case NL80211_CHAN_HT20
:
634 chanmode
= CHANNEL_G_HT20
;
636 case NL80211_CHAN_HT40PLUS
:
637 chanmode
= CHANNEL_G_HT40PLUS
;
639 case NL80211_CHAN_HT40MINUS
:
640 chanmode
= CHANNEL_G_HT40MINUS
;
644 case IEEE80211_BAND_5GHZ
:
645 switch(channel_type
) {
646 case NL80211_CHAN_NO_HT
:
647 case NL80211_CHAN_HT20
:
648 chanmode
= CHANNEL_A_HT20
;
650 case NL80211_CHAN_HT40PLUS
:
651 chanmode
= CHANNEL_A_HT40PLUS
;
653 case NL80211_CHAN_HT40MINUS
:
654 chanmode
= CHANNEL_A_HT40MINUS
;
665 static int ath_setkey_tkip(struct ath_softc
*sc
, u16 keyix
, const u8
*key
,
666 struct ath9k_keyval
*hk
, const u8
*addr
,
672 key_txmic
= key
+ NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY
;
673 key_rxmic
= key
+ NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY
;
677 * Group key installation - only two key cache entries are used
678 * regardless of splitmic capability since group key is only
679 * used either for TX or RX.
682 memcpy(hk
->kv_mic
, key_txmic
, sizeof(hk
->kv_mic
));
683 memcpy(hk
->kv_txmic
, key_txmic
, sizeof(hk
->kv_mic
));
685 memcpy(hk
->kv_mic
, key_rxmic
, sizeof(hk
->kv_mic
));
686 memcpy(hk
->kv_txmic
, key_rxmic
, sizeof(hk
->kv_mic
));
688 return ath9k_hw_set_keycache_entry(sc
->sc_ah
, keyix
, hk
, addr
);
691 /* TX and RX keys share the same key cache entry. */
692 memcpy(hk
->kv_mic
, key_rxmic
, sizeof(hk
->kv_mic
));
693 memcpy(hk
->kv_txmic
, key_txmic
, sizeof(hk
->kv_txmic
));
694 return ath9k_hw_set_keycache_entry(sc
->sc_ah
, keyix
, hk
, addr
);
697 /* Separate key cache entries for TX and RX */
699 /* TX key goes at first index, RX key at +32. */
700 memcpy(hk
->kv_mic
, key_txmic
, sizeof(hk
->kv_mic
));
701 if (!ath9k_hw_set_keycache_entry(sc
->sc_ah
, keyix
, hk
, NULL
)) {
702 /* TX MIC entry failed. No need to proceed further */
703 DPRINTF(sc
, ATH_DBG_FATAL
,
704 "Setting TX MIC Key Failed\n");
708 memcpy(hk
->kv_mic
, key_rxmic
, sizeof(hk
->kv_mic
));
709 /* XXX delete tx key on failure? */
710 return ath9k_hw_set_keycache_entry(sc
->sc_ah
, keyix
+ 32, hk
, addr
);
713 static int ath_reserve_key_cache_slot_tkip(struct ath_softc
*sc
)
717 for (i
= IEEE80211_WEP_NKID
; i
< sc
->keymax
/ 2; i
++) {
718 if (test_bit(i
, sc
->keymap
) ||
719 test_bit(i
+ 64, sc
->keymap
))
720 continue; /* At least one part of TKIP key allocated */
722 (test_bit(i
+ 32, sc
->keymap
) ||
723 test_bit(i
+ 64 + 32, sc
->keymap
)))
724 continue; /* At least one part of TKIP key allocated */
726 /* Found a free slot for a TKIP key */
732 static int ath_reserve_key_cache_slot(struct ath_softc
*sc
)
736 /* First, try to find slots that would not be available for TKIP. */
738 for (i
= IEEE80211_WEP_NKID
; i
< sc
->keymax
/ 4; i
++) {
739 if (!test_bit(i
, sc
->keymap
) &&
740 (test_bit(i
+ 32, sc
->keymap
) ||
741 test_bit(i
+ 64, sc
->keymap
) ||
742 test_bit(i
+ 64 + 32, sc
->keymap
)))
744 if (!test_bit(i
+ 32, sc
->keymap
) &&
745 (test_bit(i
, sc
->keymap
) ||
746 test_bit(i
+ 64, sc
->keymap
) ||
747 test_bit(i
+ 64 + 32, sc
->keymap
)))
749 if (!test_bit(i
+ 64, sc
->keymap
) &&
750 (test_bit(i
, sc
->keymap
) ||
751 test_bit(i
+ 32, sc
->keymap
) ||
752 test_bit(i
+ 64 + 32, sc
->keymap
)))
754 if (!test_bit(i
+ 64 + 32, sc
->keymap
) &&
755 (test_bit(i
, sc
->keymap
) ||
756 test_bit(i
+ 32, sc
->keymap
) ||
757 test_bit(i
+ 64, sc
->keymap
)))
761 for (i
= IEEE80211_WEP_NKID
; i
< sc
->keymax
/ 2; i
++) {
762 if (!test_bit(i
, sc
->keymap
) &&
763 test_bit(i
+ 64, sc
->keymap
))
765 if (test_bit(i
, sc
->keymap
) &&
766 !test_bit(i
+ 64, sc
->keymap
))
771 /* No partially used TKIP slots, pick any available slot */
772 for (i
= IEEE80211_WEP_NKID
; i
< sc
->keymax
; i
++) {
773 /* Do not allow slots that could be needed for TKIP group keys
774 * to be used. This limitation could be removed if we know that
775 * TKIP will not be used. */
776 if (i
>= 64 && i
< 64 + IEEE80211_WEP_NKID
)
779 if (i
>= 32 && i
< 32 + IEEE80211_WEP_NKID
)
781 if (i
>= 64 + 32 && i
< 64 + 32 + IEEE80211_WEP_NKID
)
785 if (!test_bit(i
, sc
->keymap
))
786 return i
; /* Found a free slot for a key */
789 /* No free slot found */
793 static int ath_key_config(struct ath_softc
*sc
,
794 struct ieee80211_vif
*vif
,
795 struct ieee80211_sta
*sta
,
796 struct ieee80211_key_conf
*key
)
798 struct ath9k_keyval hk
;
799 const u8
*mac
= NULL
;
803 memset(&hk
, 0, sizeof(hk
));
807 hk
.kv_type
= ATH9K_CIPHER_WEP
;
810 hk
.kv_type
= ATH9K_CIPHER_TKIP
;
813 hk
.kv_type
= ATH9K_CIPHER_AES_CCM
;
819 hk
.kv_len
= key
->keylen
;
820 memcpy(hk
.kv_val
, key
->key
, key
->keylen
);
822 if (!(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
823 /* For now, use the default keys for broadcast keys. This may
824 * need to change with virtual interfaces. */
826 } else if (key
->keyidx
) {
831 if (vif
->type
!= NL80211_IFTYPE_AP
) {
832 /* Only keyidx 0 should be used with unicast key, but
833 * allow this for client mode for now. */
842 if (key
->alg
== ALG_TKIP
)
843 idx
= ath_reserve_key_cache_slot_tkip(sc
);
845 idx
= ath_reserve_key_cache_slot(sc
);
847 return -ENOSPC
; /* no free key cache entries */
850 if (key
->alg
== ALG_TKIP
)
851 ret
= ath_setkey_tkip(sc
, idx
, key
->key
, &hk
, mac
,
852 vif
->type
== NL80211_IFTYPE_AP
);
854 ret
= ath9k_hw_set_keycache_entry(sc
->sc_ah
, idx
, &hk
, mac
);
859 set_bit(idx
, sc
->keymap
);
860 if (key
->alg
== ALG_TKIP
) {
861 set_bit(idx
+ 64, sc
->keymap
);
863 set_bit(idx
+ 32, sc
->keymap
);
864 set_bit(idx
+ 64 + 32, sc
->keymap
);
871 static void ath_key_delete(struct ath_softc
*sc
, struct ieee80211_key_conf
*key
)
873 ath9k_hw_keyreset(sc
->sc_ah
, key
->hw_key_idx
);
874 if (key
->hw_key_idx
< IEEE80211_WEP_NKID
)
877 clear_bit(key
->hw_key_idx
, sc
->keymap
);
878 if (key
->alg
!= ALG_TKIP
)
881 clear_bit(key
->hw_key_idx
+ 64, sc
->keymap
);
883 clear_bit(key
->hw_key_idx
+ 32, sc
->keymap
);
884 clear_bit(key
->hw_key_idx
+ 64 + 32, sc
->keymap
);
888 static void setup_ht_cap(struct ath_softc
*sc
,
889 struct ieee80211_sta_ht_cap
*ht_info
)
891 #define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
892 #define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
893 u8 tx_streams
, rx_streams
;
895 ht_info
->ht_supported
= true;
896 ht_info
->cap
= IEEE80211_HT_CAP_SUP_WIDTH_20_40
|
897 IEEE80211_HT_CAP_SM_PS
|
898 IEEE80211_HT_CAP_SGI_40
|
899 IEEE80211_HT_CAP_DSSSCCK40
;
901 ht_info
->ampdu_factor
= ATH9K_HT_CAP_MAXRXAMPDU_65536
;
902 ht_info
->ampdu_density
= ATH9K_HT_CAP_MPDUDENSITY_8
;
904 /* set up supported mcs set */
905 memset(&ht_info
->mcs
, 0, sizeof(ht_info
->mcs
));
906 tx_streams
= !(sc
->tx_chainmask
& (sc
->tx_chainmask
- 1)) ? 1 : 2;
907 rx_streams
= !(sc
->rx_chainmask
& (sc
->rx_chainmask
- 1)) ? 1 : 2;
909 if (tx_streams
!= rx_streams
) {
910 DPRINTF(sc
, ATH_DBG_CONFIG
, "TX streams %d, RX streams: %d\n",
911 tx_streams
, rx_streams
);
912 ht_info
->mcs
.tx_params
|= IEEE80211_HT_MCS_TX_RX_DIFF
;
913 ht_info
->mcs
.tx_params
|= ((tx_streams
- 1) <<
914 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
);
917 ht_info
->mcs
.rx_mask
[0] = 0xff;
919 ht_info
->mcs
.rx_mask
[1] = 0xff;
921 ht_info
->mcs
.tx_params
|= IEEE80211_HT_MCS_TX_DEFINED
;
924 static void ath9k_bss_assoc_info(struct ath_softc
*sc
,
925 struct ieee80211_vif
*vif
,
926 struct ieee80211_bss_conf
*bss_conf
)
929 if (bss_conf
->assoc
) {
930 DPRINTF(sc
, ATH_DBG_CONFIG
, "Bss Info ASSOC %d, bssid: %pM\n",
931 bss_conf
->aid
, sc
->curbssid
);
933 /* New association, store aid */
934 sc
->curaid
= bss_conf
->aid
;
935 ath9k_hw_write_associd(sc
);
938 * Request a re-configuration of Beacon related timers
939 * on the receipt of the first Beacon frame (i.e.,
940 * after time sync with the AP).
942 sc
->sc_flags
|= SC_OP_BEACON_SYNC
;
944 /* Configure the beacon */
945 ath_beacon_config(sc
, vif
);
947 /* Reset rssi stats */
948 sc
->nodestats
.ns_avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
949 sc
->nodestats
.ns_avgrssi
= ATH_RSSI_DUMMY_MARKER
;
950 sc
->nodestats
.ns_avgtxrssi
= ATH_RSSI_DUMMY_MARKER
;
951 sc
->nodestats
.ns_avgtxrate
= ATH_RATE_DUMMY_MARKER
;
955 DPRINTF(sc
, ATH_DBG_CONFIG
, "Bss Info DISASSOC\n");
958 del_timer_sync(&sc
->ani
.timer
);
962 /********************************/
964 /********************************/
966 static void ath_led_blink_work(struct work_struct
*work
)
968 struct ath_softc
*sc
= container_of(work
, struct ath_softc
,
969 ath_led_blink_work
.work
);
971 if (!(sc
->sc_flags
& SC_OP_LED_ASSOCIATED
))
974 if ((sc
->led_on_duration
== ATH_LED_ON_DURATION_IDLE
) ||
975 (sc
->led_off_duration
== ATH_LED_OFF_DURATION_IDLE
))
976 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
, 0);
978 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
,
979 (sc
->sc_flags
& SC_OP_LED_ON
) ? 1 : 0);
981 queue_delayed_work(sc
->hw
->workqueue
, &sc
->ath_led_blink_work
,
982 (sc
->sc_flags
& SC_OP_LED_ON
) ?
983 msecs_to_jiffies(sc
->led_off_duration
) :
984 msecs_to_jiffies(sc
->led_on_duration
));
986 sc
->led_on_duration
= sc
->led_on_cnt
?
987 max((ATH_LED_ON_DURATION_IDLE
- sc
->led_on_cnt
), 25) :
988 ATH_LED_ON_DURATION_IDLE
;
989 sc
->led_off_duration
= sc
->led_off_cnt
?
990 max((ATH_LED_OFF_DURATION_IDLE
- sc
->led_off_cnt
), 10) :
991 ATH_LED_OFF_DURATION_IDLE
;
992 sc
->led_on_cnt
= sc
->led_off_cnt
= 0;
993 if (sc
->sc_flags
& SC_OP_LED_ON
)
994 sc
->sc_flags
&= ~SC_OP_LED_ON
;
996 sc
->sc_flags
|= SC_OP_LED_ON
;
999 static void ath_led_brightness(struct led_classdev
*led_cdev
,
1000 enum led_brightness brightness
)
1002 struct ath_led
*led
= container_of(led_cdev
, struct ath_led
, led_cdev
);
1003 struct ath_softc
*sc
= led
->sc
;
1005 switch (brightness
) {
1007 if (led
->led_type
== ATH_LED_ASSOC
||
1008 led
->led_type
== ATH_LED_RADIO
) {
1009 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
,
1010 (led
->led_type
== ATH_LED_RADIO
));
1011 sc
->sc_flags
&= ~SC_OP_LED_ASSOCIATED
;
1012 if (led
->led_type
== ATH_LED_RADIO
)
1013 sc
->sc_flags
&= ~SC_OP_LED_ON
;
1019 if (led
->led_type
== ATH_LED_ASSOC
) {
1020 sc
->sc_flags
|= SC_OP_LED_ASSOCIATED
;
1021 queue_delayed_work(sc
->hw
->workqueue
,
1022 &sc
->ath_led_blink_work
, 0);
1023 } else if (led
->led_type
== ATH_LED_RADIO
) {
1024 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
, 0);
1025 sc
->sc_flags
|= SC_OP_LED_ON
;
1035 static int ath_register_led(struct ath_softc
*sc
, struct ath_led
*led
,
1041 led
->led_cdev
.name
= led
->name
;
1042 led
->led_cdev
.default_trigger
= trigger
;
1043 led
->led_cdev
.brightness_set
= ath_led_brightness
;
1045 ret
= led_classdev_register(wiphy_dev(sc
->hw
->wiphy
), &led
->led_cdev
);
1047 DPRINTF(sc
, ATH_DBG_FATAL
,
1048 "Failed to register led:%s", led
->name
);
1050 led
->registered
= 1;
1054 static void ath_unregister_led(struct ath_led
*led
)
1056 if (led
->registered
) {
1057 led_classdev_unregister(&led
->led_cdev
);
1058 led
->registered
= 0;
1062 static void ath_deinit_leds(struct ath_softc
*sc
)
1064 cancel_delayed_work_sync(&sc
->ath_led_blink_work
);
1065 ath_unregister_led(&sc
->assoc_led
);
1066 sc
->sc_flags
&= ~SC_OP_LED_ASSOCIATED
;
1067 ath_unregister_led(&sc
->tx_led
);
1068 ath_unregister_led(&sc
->rx_led
);
1069 ath_unregister_led(&sc
->radio_led
);
1070 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
, 1);
1073 static void ath_init_leds(struct ath_softc
*sc
)
1078 /* Configure gpio 1 for output */
1079 ath9k_hw_cfg_output(sc
->sc_ah
, ATH_LED_PIN
,
1080 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
1081 /* LED off, active low */
1082 ath9k_hw_set_gpio(sc
->sc_ah
, ATH_LED_PIN
, 1);
1084 INIT_DELAYED_WORK(&sc
->ath_led_blink_work
, ath_led_blink_work
);
1086 trigger
= ieee80211_get_radio_led_name(sc
->hw
);
1087 snprintf(sc
->radio_led
.name
, sizeof(sc
->radio_led
.name
),
1088 "ath9k-%s::radio", wiphy_name(sc
->hw
->wiphy
));
1089 ret
= ath_register_led(sc
, &sc
->radio_led
, trigger
);
1090 sc
->radio_led
.led_type
= ATH_LED_RADIO
;
1094 trigger
= ieee80211_get_assoc_led_name(sc
->hw
);
1095 snprintf(sc
->assoc_led
.name
, sizeof(sc
->assoc_led
.name
),
1096 "ath9k-%s::assoc", wiphy_name(sc
->hw
->wiphy
));
1097 ret
= ath_register_led(sc
, &sc
->assoc_led
, trigger
);
1098 sc
->assoc_led
.led_type
= ATH_LED_ASSOC
;
1102 trigger
= ieee80211_get_tx_led_name(sc
->hw
);
1103 snprintf(sc
->tx_led
.name
, sizeof(sc
->tx_led
.name
),
1104 "ath9k-%s::tx", wiphy_name(sc
->hw
->wiphy
));
1105 ret
= ath_register_led(sc
, &sc
->tx_led
, trigger
);
1106 sc
->tx_led
.led_type
= ATH_LED_TX
;
1110 trigger
= ieee80211_get_rx_led_name(sc
->hw
);
1111 snprintf(sc
->rx_led
.name
, sizeof(sc
->rx_led
.name
),
1112 "ath9k-%s::rx", wiphy_name(sc
->hw
->wiphy
));
1113 ret
= ath_register_led(sc
, &sc
->rx_led
, trigger
);
1114 sc
->rx_led
.led_type
= ATH_LED_RX
;
1121 ath_deinit_leds(sc
);
1124 void ath_radio_enable(struct ath_softc
*sc
)
1126 struct ath_hw
*ah
= sc
->sc_ah
;
1127 struct ieee80211_channel
*channel
= sc
->hw
->conf
.channel
;
1130 ath9k_ps_wakeup(sc
);
1131 ath9k_hw_configpcipowersave(ah
, 0);
1134 ah
->curchan
= ath_get_curchannel(sc
, sc
->hw
);
1136 spin_lock_bh(&sc
->sc_resetlock
);
1137 r
= ath9k_hw_reset(ah
, ah
->curchan
, false);
1139 DPRINTF(sc
, ATH_DBG_FATAL
,
1140 "Unable to reset channel %u (%uMhz) ",
1141 "reset status %d\n",
1142 channel
->center_freq
, r
);
1144 spin_unlock_bh(&sc
->sc_resetlock
);
1146 ath_update_txpow(sc
);
1147 if (ath_startrecv(sc
) != 0) {
1148 DPRINTF(sc
, ATH_DBG_FATAL
,
1149 "Unable to restart recv logic\n");
1153 if (sc
->sc_flags
& SC_OP_BEACONS
)
1154 ath_beacon_config(sc
, NULL
); /* restart beacons */
1156 /* Re-Enable interrupts */
1157 ath9k_hw_set_interrupts(ah
, sc
->imask
);
1160 ath9k_hw_cfg_output(ah
, ATH_LED_PIN
,
1161 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
1162 ath9k_hw_set_gpio(ah
, ATH_LED_PIN
, 0);
1164 ieee80211_wake_queues(sc
->hw
);
1165 ath9k_ps_restore(sc
);
1168 void ath_radio_disable(struct ath_softc
*sc
)
1170 struct ath_hw
*ah
= sc
->sc_ah
;
1171 struct ieee80211_channel
*channel
= sc
->hw
->conf
.channel
;
1174 ath9k_ps_wakeup(sc
);
1175 ieee80211_stop_queues(sc
->hw
);
1178 ath9k_hw_set_gpio(ah
, ATH_LED_PIN
, 1);
1179 ath9k_hw_cfg_gpio_input(ah
, ATH_LED_PIN
);
1181 /* Disable interrupts */
1182 ath9k_hw_set_interrupts(ah
, 0);
1184 ath_drain_all_txq(sc
, false); /* clear pending tx frames */
1185 ath_stoprecv(sc
); /* turn off frame recv */
1186 ath_flushrecv(sc
); /* flush recv queue */
1189 ah
->curchan
= ath_get_curchannel(sc
, sc
->hw
);
1191 spin_lock_bh(&sc
->sc_resetlock
);
1192 r
= ath9k_hw_reset(ah
, ah
->curchan
, false);
1194 DPRINTF(sc
, ATH_DBG_FATAL
,
1195 "Unable to reset channel %u (%uMhz) "
1196 "reset status %d\n",
1197 channel
->center_freq
, r
);
1199 spin_unlock_bh(&sc
->sc_resetlock
);
1201 ath9k_hw_phy_disable(ah
);
1202 ath9k_hw_configpcipowersave(ah
, 1);
1203 ath9k_ps_restore(sc
);
1204 ath9k_hw_setpower(ah
, ATH9K_PM_FULL_SLEEP
);
1207 /*******************/
1209 /*******************/
1211 static bool ath_is_rfkill_set(struct ath_softc
*sc
)
1213 struct ath_hw
*ah
= sc
->sc_ah
;
1215 return ath9k_hw_gpio_get(ah
, ah
->rfkill_gpio
) ==
1216 ah
->rfkill_polarity
;
1219 static void ath9k_rfkill_poll_state(struct ieee80211_hw
*hw
)
1221 struct ath_wiphy
*aphy
= hw
->priv
;
1222 struct ath_softc
*sc
= aphy
->sc
;
1223 bool blocked
= !!ath_is_rfkill_set(sc
);
1225 wiphy_rfkill_set_hw_state(hw
->wiphy
, blocked
);
1228 ath_radio_disable(sc
);
1230 ath_radio_enable(sc
);
1233 static void ath_start_rfkill_poll(struct ath_softc
*sc
)
1235 struct ath_hw
*ah
= sc
->sc_ah
;
1237 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_RFSILENT
)
1238 wiphy_rfkill_start_polling(sc
->hw
->wiphy
);
1241 void ath_cleanup(struct ath_softc
*sc
)
1244 free_irq(sc
->irq
, sc
);
1245 ath_bus_cleanup(sc
);
1246 kfree(sc
->sec_wiphy
);
1247 ieee80211_free_hw(sc
->hw
);
1250 void ath_detach(struct ath_softc
*sc
)
1252 struct ieee80211_hw
*hw
= sc
->hw
;
1255 ath9k_ps_wakeup(sc
);
1257 DPRINTF(sc
, ATH_DBG_CONFIG
, "Detach ATH hw\n");
1259 ath_deinit_leds(sc
);
1260 cancel_work_sync(&sc
->chan_work
);
1261 cancel_delayed_work_sync(&sc
->wiphy_work
);
1262 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1264 for (i
= 0; i
< sc
->num_sec_wiphy
; i
++) {
1265 struct ath_wiphy
*aphy
= sc
->sec_wiphy
[i
];
1268 sc
->sec_wiphy
[i
] = NULL
;
1269 ieee80211_unregister_hw(aphy
->hw
);
1270 ieee80211_free_hw(aphy
->hw
);
1272 ieee80211_unregister_hw(hw
);
1276 tasklet_kill(&sc
->intr_tq
);
1277 tasklet_kill(&sc
->bcon_tasklet
);
1279 if (!(sc
->sc_flags
& SC_OP_INVALID
))
1280 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
1282 /* cleanup tx queues */
1283 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++)
1284 if (ATH_TXQ_SETUP(sc
, i
))
1285 ath_tx_cleanupq(sc
, &sc
->tx
.txq
[i
]);
1287 ath9k_hw_detach(sc
->sc_ah
);
1288 ath9k_exit_debug(sc
);
1289 ath9k_ps_restore(sc
);
1292 static int ath9k_reg_notifier(struct wiphy
*wiphy
,
1293 struct regulatory_request
*request
)
1295 struct ieee80211_hw
*hw
= wiphy_to_ieee80211_hw(wiphy
);
1296 struct ath_wiphy
*aphy
= hw
->priv
;
1297 struct ath_softc
*sc
= aphy
->sc
;
1298 struct ath_regulatory
*reg
= &sc
->sc_ah
->regulatory
;
1300 return ath_reg_notifier_apply(wiphy
, request
, reg
);
1303 static int ath_init(u16 devid
, struct ath_softc
*sc
)
1305 struct ath_hw
*ah
= NULL
;
1310 /* XXX: hardware will not be ready until ath_open() being called */
1311 sc
->sc_flags
|= SC_OP_INVALID
;
1313 if (ath9k_init_debug(sc
) < 0)
1314 printk(KERN_ERR
"Unable to create debugfs files\n");
1316 spin_lock_init(&sc
->wiphy_lock
);
1317 spin_lock_init(&sc
->sc_resetlock
);
1318 spin_lock_init(&sc
->sc_serial_rw
);
1319 spin_lock_init(&sc
->ani_lock
);
1320 mutex_init(&sc
->mutex
);
1321 tasklet_init(&sc
->intr_tq
, ath9k_tasklet
, (unsigned long)sc
);
1322 tasklet_init(&sc
->bcon_tasklet
, ath_beacon_tasklet
,
1326 * Cache line size is used to size and align various
1327 * structures used to communicate with the hardware.
1329 ath_read_cachesize(sc
, &csz
);
1330 /* XXX assert csz is non-zero */
1331 sc
->cachelsz
= csz
<< 2; /* convert to bytes */
1333 ah
= ath9k_hw_attach(devid
, sc
, &status
);
1335 DPRINTF(sc
, ATH_DBG_FATAL
,
1336 "Unable to attach hardware; HAL status %d\n", status
);
1342 /* Get the hardware key cache size. */
1343 sc
->keymax
= ah
->caps
.keycache_size
;
1344 if (sc
->keymax
> ATH_KEYMAX
) {
1345 DPRINTF(sc
, ATH_DBG_ANY
,
1346 "Warning, using only %u entries in %u key cache\n",
1347 ATH_KEYMAX
, sc
->keymax
);
1348 sc
->keymax
= ATH_KEYMAX
;
1352 * Reset the key cache since some parts do not
1353 * reset the contents on initial power up.
1355 for (i
= 0; i
< sc
->keymax
; i
++)
1356 ath9k_hw_keyreset(ah
, (u16
) i
);
1361 /* default to MONITOR mode */
1362 sc
->sc_ah
->opmode
= NL80211_IFTYPE_MONITOR
;
1364 /* Setup rate tables */
1366 ath_rate_attach(sc
);
1367 ath_setup_rates(sc
, IEEE80211_BAND_2GHZ
);
1368 ath_setup_rates(sc
, IEEE80211_BAND_5GHZ
);
1371 * Allocate hardware transmit queues: one queue for
1372 * beacon frames and one data queue for each QoS
1373 * priority. Note that the hal handles reseting
1374 * these queues at the needed time.
1376 sc
->beacon
.beaconq
= ath_beaconq_setup(ah
);
1377 if (sc
->beacon
.beaconq
== -1) {
1378 DPRINTF(sc
, ATH_DBG_FATAL
,
1379 "Unable to setup a beacon xmit queue\n");
1383 sc
->beacon
.cabq
= ath_txq_setup(sc
, ATH9K_TX_QUEUE_CAB
, 0);
1384 if (sc
->beacon
.cabq
== NULL
) {
1385 DPRINTF(sc
, ATH_DBG_FATAL
,
1386 "Unable to setup CAB xmit queue\n");
1391 sc
->config
.cabqReadytime
= ATH_CABQ_READY_TIME
;
1392 ath_cabq_update(sc
);
1394 for (i
= 0; i
< ARRAY_SIZE(sc
->tx
.hwq_map
); i
++)
1395 sc
->tx
.hwq_map
[i
] = -1;
1397 /* Setup data queues */
1398 /* NB: ensure BK queue is the lowest priority h/w queue */
1399 if (!ath_tx_setup(sc
, ATH9K_WME_AC_BK
)) {
1400 DPRINTF(sc
, ATH_DBG_FATAL
,
1401 "Unable to setup xmit queue for BK traffic\n");
1406 if (!ath_tx_setup(sc
, ATH9K_WME_AC_BE
)) {
1407 DPRINTF(sc
, ATH_DBG_FATAL
,
1408 "Unable to setup xmit queue for BE traffic\n");
1412 if (!ath_tx_setup(sc
, ATH9K_WME_AC_VI
)) {
1413 DPRINTF(sc
, ATH_DBG_FATAL
,
1414 "Unable to setup xmit queue for VI traffic\n");
1418 if (!ath_tx_setup(sc
, ATH9K_WME_AC_VO
)) {
1419 DPRINTF(sc
, ATH_DBG_FATAL
,
1420 "Unable to setup xmit queue for VO traffic\n");
1425 /* Initializes the noise floor to a reasonable default value.
1426 * Later on this will be updated during ANI processing. */
1428 sc
->ani
.noise_floor
= ATH_DEFAULT_NOISE_FLOOR
;
1429 setup_timer(&sc
->ani
.timer
, ath_ani_calibrate
, (unsigned long)sc
);
1431 if (ath9k_hw_getcapability(ah
, ATH9K_CAP_CIPHER
,
1432 ATH9K_CIPHER_TKIP
, NULL
)) {
1434 * Whether we should enable h/w TKIP MIC.
1435 * XXX: if we don't support WME TKIP MIC, then we wouldn't
1436 * report WMM capable, so it's always safe to turn on
1437 * TKIP MIC in this case.
1439 ath9k_hw_setcapability(sc
->sc_ah
, ATH9K_CAP_TKIP_MIC
,
1444 * Check whether the separate key cache entries
1445 * are required to handle both tx+rx MIC keys.
1446 * With split mic keys the number of stations is limited
1447 * to 27 otherwise 59.
1449 if (ath9k_hw_getcapability(ah
, ATH9K_CAP_CIPHER
,
1450 ATH9K_CIPHER_TKIP
, NULL
)
1451 && ath9k_hw_getcapability(ah
, ATH9K_CAP_CIPHER
,
1452 ATH9K_CIPHER_MIC
, NULL
)
1453 && ath9k_hw_getcapability(ah
, ATH9K_CAP_TKIP_SPLIT
,
1457 /* turn on mcast key search if possible */
1458 if (!ath9k_hw_getcapability(ah
, ATH9K_CAP_MCAST_KEYSRCH
, 0, NULL
))
1459 (void)ath9k_hw_setcapability(ah
, ATH9K_CAP_MCAST_KEYSRCH
, 1,
1462 sc
->config
.txpowlimit
= ATH_TXPOWER_MAX
;
1464 /* 11n Capabilities */
1465 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
1466 sc
->sc_flags
|= SC_OP_TXAGGR
;
1467 sc
->sc_flags
|= SC_OP_RXAGGR
;
1470 sc
->tx_chainmask
= ah
->caps
.tx_chainmask
;
1471 sc
->rx_chainmask
= ah
->caps
.rx_chainmask
;
1473 ath9k_hw_setcapability(ah
, ATH9K_CAP_DIVERSITY
, 1, true, NULL
);
1474 sc
->rx
.defant
= ath9k_hw_getdefantenna(ah
);
1476 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_BSSIDMASK
)
1477 memcpy(sc
->bssidmask
, ath_bcast_mac
, ETH_ALEN
);
1479 sc
->beacon
.slottime
= ATH9K_SLOT_TIME_9
; /* default to short slot time */
1481 /* initialize beacon slots */
1482 for (i
= 0; i
< ARRAY_SIZE(sc
->beacon
.bslot
); i
++) {
1483 sc
->beacon
.bslot
[i
] = NULL
;
1484 sc
->beacon
.bslot_aphy
[i
] = NULL
;
1487 /* setup channels and rates */
1489 sc
->sbands
[IEEE80211_BAND_2GHZ
].channels
= ath9k_2ghz_chantable
;
1490 sc
->sbands
[IEEE80211_BAND_2GHZ
].bitrates
=
1491 sc
->rates
[IEEE80211_BAND_2GHZ
];
1492 sc
->sbands
[IEEE80211_BAND_2GHZ
].band
= IEEE80211_BAND_2GHZ
;
1493 sc
->sbands
[IEEE80211_BAND_2GHZ
].n_channels
=
1494 ARRAY_SIZE(ath9k_2ghz_chantable
);
1496 if (test_bit(ATH9K_MODE_11A
, sc
->sc_ah
->caps
.wireless_modes
)) {
1497 sc
->sbands
[IEEE80211_BAND_5GHZ
].channels
= ath9k_5ghz_chantable
;
1498 sc
->sbands
[IEEE80211_BAND_5GHZ
].bitrates
=
1499 sc
->rates
[IEEE80211_BAND_5GHZ
];
1500 sc
->sbands
[IEEE80211_BAND_5GHZ
].band
= IEEE80211_BAND_5GHZ
;
1501 sc
->sbands
[IEEE80211_BAND_5GHZ
].n_channels
=
1502 ARRAY_SIZE(ath9k_5ghz_chantable
);
1505 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_BT_COEX
)
1506 ath9k_hw_btcoex_enable(sc
->sc_ah
);
1510 /* cleanup tx queues */
1511 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++)
1512 if (ATH_TXQ_SETUP(sc
, i
))
1513 ath_tx_cleanupq(sc
, &sc
->tx
.txq
[i
]);
1516 ath9k_hw_detach(ah
);
1517 ath9k_exit_debug(sc
);
1522 void ath_set_hw_capab(struct ath_softc
*sc
, struct ieee80211_hw
*hw
)
1524 hw
->flags
= IEEE80211_HW_RX_INCLUDES_FCS
|
1525 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING
|
1526 IEEE80211_HW_SIGNAL_DBM
|
1527 IEEE80211_HW_AMPDU_AGGREGATION
|
1528 IEEE80211_HW_SUPPORTS_PS
|
1529 IEEE80211_HW_PS_NULLFUNC_STACK
|
1530 IEEE80211_HW_SPECTRUM_MGMT
;
1532 if (AR_SREV_9160_10_OR_LATER(sc
->sc_ah
) || modparam_nohwcrypt
)
1533 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
1535 hw
->wiphy
->interface_modes
=
1536 BIT(NL80211_IFTYPE_AP
) |
1537 BIT(NL80211_IFTYPE_STATION
) |
1538 BIT(NL80211_IFTYPE_ADHOC
) |
1539 BIT(NL80211_IFTYPE_MESH_POINT
);
1543 hw
->channel_change_time
= 5000;
1544 hw
->max_listen_interval
= 10;
1545 /* Hardware supports 10 but we use 4 */
1546 hw
->max_rate_tries
= 4;
1547 hw
->sta_data_size
= sizeof(struct ath_node
);
1548 hw
->vif_data_size
= sizeof(struct ath_vif
);
1550 hw
->rate_control_algorithm
= "ath9k_rate_control";
1552 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
1553 &sc
->sbands
[IEEE80211_BAND_2GHZ
];
1554 if (test_bit(ATH9K_MODE_11A
, sc
->sc_ah
->caps
.wireless_modes
))
1555 hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
1556 &sc
->sbands
[IEEE80211_BAND_5GHZ
];
1559 int ath_attach(u16 devid
, struct ath_softc
*sc
)
1561 struct ieee80211_hw
*hw
= sc
->hw
;
1563 struct ath_regulatory
*reg
;
1565 DPRINTF(sc
, ATH_DBG_CONFIG
, "Attach ATH hw\n");
1567 error
= ath_init(devid
, sc
);
1571 /* get mac address from hardware and set in mac80211 */
1573 SET_IEEE80211_PERM_ADDR(hw
, sc
->sc_ah
->macaddr
);
1575 ath_set_hw_capab(sc
, hw
);
1577 error
= ath_regd_init(&sc
->sc_ah
->regulatory
, sc
->hw
->wiphy
,
1578 ath9k_reg_notifier
);
1582 reg
= &sc
->sc_ah
->regulatory
;
1584 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
1585 setup_ht_cap(sc
, &sc
->sbands
[IEEE80211_BAND_2GHZ
].ht_cap
);
1586 if (test_bit(ATH9K_MODE_11A
, sc
->sc_ah
->caps
.wireless_modes
))
1587 setup_ht_cap(sc
, &sc
->sbands
[IEEE80211_BAND_5GHZ
].ht_cap
);
1590 /* initialize tx/rx engine */
1591 error
= ath_tx_init(sc
, ATH_TXBUF
);
1595 error
= ath_rx_init(sc
, ATH_RXBUF
);
1599 INIT_WORK(&sc
->chan_work
, ath9k_wiphy_chan_work
);
1600 INIT_DELAYED_WORK(&sc
->wiphy_work
, ath9k_wiphy_work
);
1601 sc
->wiphy_scheduler_int
= msecs_to_jiffies(500);
1603 error
= ieee80211_register_hw(hw
);
1605 if (!ath_is_world_regd(reg
)) {
1606 error
= regulatory_hint(hw
->wiphy
, reg
->alpha2
);
1611 /* Initialize LED control */
1614 ath_start_rfkill_poll(sc
);
1619 /* cleanup tx queues */
1620 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++)
1621 if (ATH_TXQ_SETUP(sc
, i
))
1622 ath_tx_cleanupq(sc
, &sc
->tx
.txq
[i
]);
1624 ath9k_hw_detach(sc
->sc_ah
);
1625 ath9k_exit_debug(sc
);
1630 int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
1632 struct ath_hw
*ah
= sc
->sc_ah
;
1633 struct ieee80211_hw
*hw
= sc
->hw
;
1636 ath9k_hw_set_interrupts(ah
, 0);
1637 ath_drain_all_txq(sc
, retry_tx
);
1641 spin_lock_bh(&sc
->sc_resetlock
);
1642 r
= ath9k_hw_reset(ah
, sc
->sc_ah
->curchan
, false);
1644 DPRINTF(sc
, ATH_DBG_FATAL
,
1645 "Unable to reset hardware; reset status %d\n", r
);
1646 spin_unlock_bh(&sc
->sc_resetlock
);
1648 if (ath_startrecv(sc
) != 0)
1649 DPRINTF(sc
, ATH_DBG_FATAL
, "Unable to start recv logic\n");
1652 * We may be doing a reset in response to a request
1653 * that changes the channel so update any state that
1654 * might change as a result.
1656 ath_cache_conf_rate(sc
, &hw
->conf
);
1658 ath_update_txpow(sc
);
1660 if (sc
->sc_flags
& SC_OP_BEACONS
)
1661 ath_beacon_config(sc
, NULL
); /* restart beacons */
1663 ath9k_hw_set_interrupts(ah
, sc
->imask
);
1667 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1668 if (ATH_TXQ_SETUP(sc
, i
)) {
1669 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
1670 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
1671 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
1680 * This function will allocate both the DMA descriptor structure, and the
1681 * buffers it contains. These are used to contain the descriptors used
1684 int ath_descdma_setup(struct ath_softc
*sc
, struct ath_descdma
*dd
,
1685 struct list_head
*head
, const char *name
,
1686 int nbuf
, int ndesc
)
1688 #define DS2PHYS(_dd, _ds) \
1689 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
1690 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
1691 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
1693 struct ath_desc
*ds
;
1695 int i
, bsize
, error
;
1697 DPRINTF(sc
, ATH_DBG_CONFIG
, "%s DMA: %u buffers %u desc/buf\n",
1700 INIT_LIST_HEAD(head
);
1701 /* ath_desc must be a multiple of DWORDs */
1702 if ((sizeof(struct ath_desc
) % 4) != 0) {
1703 DPRINTF(sc
, ATH_DBG_FATAL
, "ath_desc not DWORD aligned\n");
1704 ASSERT((sizeof(struct ath_desc
) % 4) == 0);
1709 dd
->dd_desc_len
= sizeof(struct ath_desc
) * nbuf
* ndesc
;
1712 * Need additional DMA memory because we can't use
1713 * descriptors that cross the 4K page boundary. Assume
1714 * one skipped descriptor per 4K page.
1716 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_4KB_SPLITTRANS
)) {
1718 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd
->dd_desc_len
);
1721 while (ndesc_skipped
) {
1722 dma_len
= ndesc_skipped
* sizeof(struct ath_desc
);
1723 dd
->dd_desc_len
+= dma_len
;
1725 ndesc_skipped
= ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len
);
1729 /* allocate descriptors */
1730 dd
->dd_desc
= dma_alloc_coherent(sc
->dev
, dd
->dd_desc_len
,
1731 &dd
->dd_desc_paddr
, GFP_KERNEL
);
1732 if (dd
->dd_desc
== NULL
) {
1737 DPRINTF(sc
, ATH_DBG_CONFIG
, "%s DMA map: %p (%u) -> %llx (%u)\n",
1738 name
, ds
, (u32
) dd
->dd_desc_len
,
1739 ito64(dd
->dd_desc_paddr
), /*XXX*/(u32
) dd
->dd_desc_len
);
1741 /* allocate buffers */
1742 bsize
= sizeof(struct ath_buf
) * nbuf
;
1743 bf
= kzalloc(bsize
, GFP_KERNEL
);
1750 for (i
= 0; i
< nbuf
; i
++, bf
++, ds
+= ndesc
) {
1752 bf
->bf_daddr
= DS2PHYS(dd
, ds
);
1754 if (!(sc
->sc_ah
->caps
.hw_caps
&
1755 ATH9K_HW_CAP_4KB_SPLITTRANS
)) {
1757 * Skip descriptor addresses which can cause 4KB
1758 * boundary crossing (addr + length) with a 32 dword
1761 while (ATH_DESC_4KB_BOUND_CHECK(bf
->bf_daddr
)) {
1762 ASSERT((caddr_t
) bf
->bf_desc
<
1763 ((caddr_t
) dd
->dd_desc
+
1768 bf
->bf_daddr
= DS2PHYS(dd
, ds
);
1771 list_add_tail(&bf
->list
, head
);
1775 dma_free_coherent(sc
->dev
, dd
->dd_desc_len
, dd
->dd_desc
,
1778 memset(dd
, 0, sizeof(*dd
));
1780 #undef ATH_DESC_4KB_BOUND_CHECK
1781 #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED
1785 void ath_descdma_cleanup(struct ath_softc
*sc
,
1786 struct ath_descdma
*dd
,
1787 struct list_head
*head
)
1789 dma_free_coherent(sc
->dev
, dd
->dd_desc_len
, dd
->dd_desc
,
1792 INIT_LIST_HEAD(head
);
1793 kfree(dd
->dd_bufptr
);
1794 memset(dd
, 0, sizeof(*dd
));
1797 int ath_get_hal_qnum(u16 queue
, struct ath_softc
*sc
)
1803 qnum
= sc
->tx
.hwq_map
[ATH9K_WME_AC_VO
];
1806 qnum
= sc
->tx
.hwq_map
[ATH9K_WME_AC_VI
];
1809 qnum
= sc
->tx
.hwq_map
[ATH9K_WME_AC_BE
];
1812 qnum
= sc
->tx
.hwq_map
[ATH9K_WME_AC_BK
];
1815 qnum
= sc
->tx
.hwq_map
[ATH9K_WME_AC_BE
];
1822 int ath_get_mac80211_qnum(u32 queue
, struct ath_softc
*sc
)
1827 case ATH9K_WME_AC_VO
:
1830 case ATH9K_WME_AC_VI
:
1833 case ATH9K_WME_AC_BE
:
1836 case ATH9K_WME_AC_BK
:
1847 /* XXX: Remove me once we don't depend on ath9k_channel for all
1848 * this redundant data */
1849 void ath9k_update_ichannel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
1850 struct ath9k_channel
*ichan
)
1852 struct ieee80211_channel
*chan
= hw
->conf
.channel
;
1853 struct ieee80211_conf
*conf
= &hw
->conf
;
1855 ichan
->channel
= chan
->center_freq
;
1858 if (chan
->band
== IEEE80211_BAND_2GHZ
) {
1859 ichan
->chanmode
= CHANNEL_G
;
1860 ichan
->channelFlags
= CHANNEL_2GHZ
| CHANNEL_OFDM
;
1862 ichan
->chanmode
= CHANNEL_A
;
1863 ichan
->channelFlags
= CHANNEL_5GHZ
| CHANNEL_OFDM
;
1866 sc
->tx_chan_width
= ATH9K_HT_MACMODE_20
;
1868 if (conf_is_ht(conf
)) {
1869 if (conf_is_ht40(conf
))
1870 sc
->tx_chan_width
= ATH9K_HT_MACMODE_2040
;
1872 ichan
->chanmode
= ath_get_extchanmode(sc
, chan
,
1873 conf
->channel_type
);
1877 /**********************/
1878 /* mac80211 callbacks */
1879 /**********************/
1881 static int ath9k_start(struct ieee80211_hw
*hw
)
1883 struct ath_wiphy
*aphy
= hw
->priv
;
1884 struct ath_softc
*sc
= aphy
->sc
;
1885 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1886 struct ath9k_channel
*init_channel
;
1889 DPRINTF(sc
, ATH_DBG_CONFIG
, "Starting driver with "
1890 "initial channel: %d MHz\n", curchan
->center_freq
);
1892 mutex_lock(&sc
->mutex
);
1894 if (ath9k_wiphy_started(sc
)) {
1895 if (sc
->chan_idx
== curchan
->hw_value
) {
1897 * Already on the operational channel, the new wiphy
1898 * can be marked active.
1900 aphy
->state
= ATH_WIPHY_ACTIVE
;
1901 ieee80211_wake_queues(hw
);
1904 * Another wiphy is on another channel, start the new
1905 * wiphy in paused state.
1907 aphy
->state
= ATH_WIPHY_PAUSED
;
1908 ieee80211_stop_queues(hw
);
1910 mutex_unlock(&sc
->mutex
);
1913 aphy
->state
= ATH_WIPHY_ACTIVE
;
1915 /* setup initial channel */
1917 sc
->chan_idx
= curchan
->hw_value
;
1919 init_channel
= ath_get_curchannel(sc
, hw
);
1921 /* Reset SERDES registers */
1922 ath9k_hw_configpcipowersave(sc
->sc_ah
, 0);
1925 * The basic interface to setting the hardware in a good
1926 * state is ``reset''. On return the hardware is known to
1927 * be powered up and with interrupts disabled. This must
1928 * be followed by initialization of the appropriate bits
1929 * and then setup of the interrupt mask.
1931 spin_lock_bh(&sc
->sc_resetlock
);
1932 r
= ath9k_hw_reset(sc
->sc_ah
, init_channel
, false);
1934 DPRINTF(sc
, ATH_DBG_FATAL
,
1935 "Unable to reset hardware; reset status %d "
1936 "(freq %u MHz)\n", r
,
1937 curchan
->center_freq
);
1938 spin_unlock_bh(&sc
->sc_resetlock
);
1941 spin_unlock_bh(&sc
->sc_resetlock
);
1944 * This is needed only to setup initial state
1945 * but it's best done after a reset.
1947 ath_update_txpow(sc
);
1950 * Setup the hardware after reset:
1951 * The receive engine is set going.
1952 * Frame transmit is handled entirely
1953 * in the frame output path; there's nothing to do
1954 * here except setup the interrupt mask.
1956 if (ath_startrecv(sc
) != 0) {
1957 DPRINTF(sc
, ATH_DBG_FATAL
, "Unable to start recv logic\n");
1962 /* Setup our intr mask. */
1963 sc
->imask
= ATH9K_INT_RX
| ATH9K_INT_TX
1964 | ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
1965 | ATH9K_INT_FATAL
| ATH9K_INT_GLOBAL
;
1967 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_GTT
)
1968 sc
->imask
|= ATH9K_INT_GTT
;
1970 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
1971 sc
->imask
|= ATH9K_INT_CST
;
1973 ath_cache_conf_rate(sc
, &hw
->conf
);
1975 sc
->sc_flags
&= ~SC_OP_INVALID
;
1977 /* Disable BMISS interrupt when we're not associated */
1978 sc
->imask
&= ~(ATH9K_INT_SWBA
| ATH9K_INT_BMISS
);
1979 ath9k_hw_set_interrupts(sc
->sc_ah
, sc
->imask
);
1981 ieee80211_wake_queues(hw
);
1983 queue_delayed_work(sc
->hw
->workqueue
, &sc
->tx_complete_work
, 0);
1986 mutex_unlock(&sc
->mutex
);
1991 static int ath9k_tx(struct ieee80211_hw
*hw
,
1992 struct sk_buff
*skb
)
1994 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
1995 struct ath_wiphy
*aphy
= hw
->priv
;
1996 struct ath_softc
*sc
= aphy
->sc
;
1997 struct ath_tx_control txctl
;
1998 int hdrlen
, padsize
;
2000 if (aphy
->state
!= ATH_WIPHY_ACTIVE
&& aphy
->state
!= ATH_WIPHY_SCAN
) {
2001 printk(KERN_DEBUG
"ath9k: %s: TX in unexpected wiphy state "
2002 "%d\n", wiphy_name(hw
->wiphy
), aphy
->state
);
2006 if (sc
->hw
->conf
.flags
& IEEE80211_CONF_PS
) {
2007 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
2009 * mac80211 does not set PM field for normal data frames, so we
2010 * need to update that based on the current PS mode.
2012 if (ieee80211_is_data(hdr
->frame_control
) &&
2013 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
2014 !ieee80211_has_pm(hdr
->frame_control
)) {
2015 DPRINTF(sc
, ATH_DBG_PS
, "Add PM=1 for a TX frame "
2016 "while in PS mode\n");
2017 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
2021 if (unlikely(sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)) {
2023 * We are using PS-Poll and mac80211 can request TX while in
2024 * power save mode. Need to wake up hardware for the TX to be
2025 * completed and if needed, also for RX of buffered frames.
2027 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
2028 ath9k_ps_wakeup(sc
);
2029 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
2030 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
2031 DPRINTF(sc
, ATH_DBG_PS
, "Sending PS-Poll to pick a "
2032 "buffered frame\n");
2033 sc
->sc_flags
|= SC_OP_WAIT_FOR_PSPOLL_DATA
;
2035 DPRINTF(sc
, ATH_DBG_PS
, "Wake up to complete TX\n");
2036 sc
->sc_flags
|= SC_OP_WAIT_FOR_TX_ACK
;
2039 * The actual restore operation will happen only after
2040 * the sc_flags bit is cleared. We are just dropping
2041 * the ps_usecount here.
2043 ath9k_ps_restore(sc
);
2046 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
2049 * As a temporary workaround, assign seq# here; this will likely need
2050 * to be cleaned up to work better with Beacon transmission and virtual
2053 if (info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
) {
2054 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
2055 if (info
->flags
& IEEE80211_TX_CTL_FIRST_FRAGMENT
)
2056 sc
->tx
.seq_no
+= 0x10;
2057 hdr
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
2058 hdr
->seq_ctrl
|= cpu_to_le16(sc
->tx
.seq_no
);
2061 /* Add the padding after the header if this is not already done */
2062 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
2064 padsize
= hdrlen
% 4;
2065 if (skb_headroom(skb
) < padsize
)
2067 skb_push(skb
, padsize
);
2068 memmove(skb
->data
, skb
->data
+ padsize
, hdrlen
);
2071 /* Check if a tx queue is available */
2073 txctl
.txq
= ath_test_get_txq(sc
, skb
);
2077 DPRINTF(sc
, ATH_DBG_XMIT
, "transmitting packet, skb: %p\n", skb
);
2079 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
2080 DPRINTF(sc
, ATH_DBG_XMIT
, "TX failed\n");
2086 dev_kfree_skb_any(skb
);
2090 static void ath9k_stop(struct ieee80211_hw
*hw
)
2092 struct ath_wiphy
*aphy
= hw
->priv
;
2093 struct ath_softc
*sc
= aphy
->sc
;
2095 aphy
->state
= ATH_WIPHY_INACTIVE
;
2097 if (sc
->sc_flags
& SC_OP_INVALID
) {
2098 DPRINTF(sc
, ATH_DBG_ANY
, "Device not present\n");
2102 mutex_lock(&sc
->mutex
);
2104 ieee80211_stop_queues(hw
);
2106 if (ath9k_wiphy_started(sc
)) {
2107 mutex_unlock(&sc
->mutex
);
2108 return; /* another wiphy still in use */
2111 /* make sure h/w will not generate any interrupt
2112 * before setting the invalid flag. */
2113 ath9k_hw_set_interrupts(sc
->sc_ah
, 0);
2115 if (!(sc
->sc_flags
& SC_OP_INVALID
)) {
2116 ath_drain_all_txq(sc
, false);
2118 ath9k_hw_phy_disable(sc
->sc_ah
);
2120 sc
->rx
.rxlink
= NULL
;
2122 wiphy_rfkill_stop_polling(sc
->hw
->wiphy
);
2124 /* disable HAL and put h/w to sleep */
2125 ath9k_hw_disable(sc
->sc_ah
);
2126 ath9k_hw_configpcipowersave(sc
->sc_ah
, 1);
2128 sc
->sc_flags
|= SC_OP_INVALID
;
2130 mutex_unlock(&sc
->mutex
);
2132 DPRINTF(sc
, ATH_DBG_CONFIG
, "Driver halt\n");
2135 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
2136 struct ieee80211_if_init_conf
*conf
)
2138 struct ath_wiphy
*aphy
= hw
->priv
;
2139 struct ath_softc
*sc
= aphy
->sc
;
2140 struct ath_vif
*avp
= (void *)conf
->vif
->drv_priv
;
2141 enum nl80211_iftype ic_opmode
= NL80211_IFTYPE_UNSPECIFIED
;
2144 mutex_lock(&sc
->mutex
);
2146 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_BSSIDMASK
) &&
2152 switch (conf
->type
) {
2153 case NL80211_IFTYPE_STATION
:
2154 ic_opmode
= NL80211_IFTYPE_STATION
;
2156 case NL80211_IFTYPE_ADHOC
:
2157 case NL80211_IFTYPE_AP
:
2158 case NL80211_IFTYPE_MESH_POINT
:
2159 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
2163 ic_opmode
= conf
->type
;
2166 DPRINTF(sc
, ATH_DBG_FATAL
,
2167 "Interface type %d not yet supported\n", conf
->type
);
2172 DPRINTF(sc
, ATH_DBG_CONFIG
, "Attach a VIF of type: %d\n", ic_opmode
);
2174 /* Set the VIF opmode */
2175 avp
->av_opmode
= ic_opmode
;
2180 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_BSSIDMASK
)
2181 ath9k_set_bssid_mask(hw
);
2184 goto out
; /* skip global settings for secondary vif */
2186 if (ic_opmode
== NL80211_IFTYPE_AP
) {
2187 ath9k_hw_set_tsfadjust(sc
->sc_ah
, 1);
2188 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2191 /* Set the device opmode */
2192 sc
->sc_ah
->opmode
= ic_opmode
;
2195 * Enable MIB interrupts when there are hardware phy counters.
2196 * Note we only do this (at the moment) for station mode.
2198 if ((conf
->type
== NL80211_IFTYPE_STATION
) ||
2199 (conf
->type
== NL80211_IFTYPE_ADHOC
) ||
2200 (conf
->type
== NL80211_IFTYPE_MESH_POINT
)) {
2201 if (ath9k_hw_phycounters(sc
->sc_ah
))
2202 sc
->imask
|= ATH9K_INT_MIB
;
2203 sc
->imask
|= ATH9K_INT_TSFOOR
;
2206 ath9k_hw_set_interrupts(sc
->sc_ah
, sc
->imask
);
2208 if (conf
->type
== NL80211_IFTYPE_AP
||
2209 conf
->type
== NL80211_IFTYPE_ADHOC
||
2210 conf
->type
== NL80211_IFTYPE_MONITOR
)
2214 mutex_unlock(&sc
->mutex
);
2218 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
2219 struct ieee80211_if_init_conf
*conf
)
2221 struct ath_wiphy
*aphy
= hw
->priv
;
2222 struct ath_softc
*sc
= aphy
->sc
;
2223 struct ath_vif
*avp
= (void *)conf
->vif
->drv_priv
;
2226 DPRINTF(sc
, ATH_DBG_CONFIG
, "Detach Interface\n");
2228 mutex_lock(&sc
->mutex
);
2231 del_timer_sync(&sc
->ani
.timer
);
2233 /* Reclaim beacon resources */
2234 if ((sc
->sc_ah
->opmode
== NL80211_IFTYPE_AP
) ||
2235 (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
) ||
2236 (sc
->sc_ah
->opmode
== NL80211_IFTYPE_MESH_POINT
)) {
2237 ath9k_hw_stoptxdma(sc
->sc_ah
, sc
->beacon
.beaconq
);
2238 ath_beacon_return(sc
, avp
);
2241 sc
->sc_flags
&= ~SC_OP_BEACONS
;
2243 for (i
= 0; i
< ARRAY_SIZE(sc
->beacon
.bslot
); i
++) {
2244 if (sc
->beacon
.bslot
[i
] == conf
->vif
) {
2245 printk(KERN_DEBUG
"%s: vif had allocated beacon "
2246 "slot\n", __func__
);
2247 sc
->beacon
.bslot
[i
] = NULL
;
2248 sc
->beacon
.bslot_aphy
[i
] = NULL
;
2254 mutex_unlock(&sc
->mutex
);
2257 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
2259 struct ath_wiphy
*aphy
= hw
->priv
;
2260 struct ath_softc
*sc
= aphy
->sc
;
2261 struct ieee80211_conf
*conf
= &hw
->conf
;
2262 struct ath_hw
*ah
= sc
->sc_ah
;
2264 mutex_lock(&sc
->mutex
);
2266 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
2267 if (conf
->flags
& IEEE80211_CONF_PS
) {
2268 if (!(ah
->caps
.hw_caps
&
2269 ATH9K_HW_CAP_AUTOSLEEP
)) {
2270 if ((sc
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
2271 sc
->imask
|= ATH9K_INT_TIM_TIMER
;
2272 ath9k_hw_set_interrupts(sc
->sc_ah
,
2275 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
2277 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_NETWORK_SLEEP
);
2279 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
2280 if (!(ah
->caps
.hw_caps
&
2281 ATH9K_HW_CAP_AUTOSLEEP
)) {
2282 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
2283 sc
->sc_flags
&= ~(SC_OP_WAIT_FOR_BEACON
|
2284 SC_OP_WAIT_FOR_CAB
|
2285 SC_OP_WAIT_FOR_PSPOLL_DATA
|
2286 SC_OP_WAIT_FOR_TX_ACK
);
2287 if (sc
->imask
& ATH9K_INT_TIM_TIMER
) {
2288 sc
->imask
&= ~ATH9K_INT_TIM_TIMER
;
2289 ath9k_hw_set_interrupts(sc
->sc_ah
,
2296 if (changed
& IEEE80211_CONF_CHANGE_CHANNEL
) {
2297 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
2298 int pos
= curchan
->hw_value
;
2300 aphy
->chan_idx
= pos
;
2301 aphy
->chan_is_ht
= conf_is_ht(conf
);
2303 if (aphy
->state
== ATH_WIPHY_SCAN
||
2304 aphy
->state
== ATH_WIPHY_ACTIVE
)
2305 ath9k_wiphy_pause_all_forced(sc
, aphy
);
2308 * Do not change operational channel based on a paused
2311 goto skip_chan_change
;
2314 DPRINTF(sc
, ATH_DBG_CONFIG
, "Set channel: %d MHz\n",
2315 curchan
->center_freq
);
2317 /* XXX: remove me eventualy */
2318 ath9k_update_ichannel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]);
2320 ath_update_chainmask(sc
, conf_is_ht(conf
));
2322 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
2323 DPRINTF(sc
, ATH_DBG_FATAL
, "Unable to set channel\n");
2324 mutex_unlock(&sc
->mutex
);
2330 if (changed
& IEEE80211_CONF_CHANGE_POWER
)
2331 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
2333 mutex_unlock(&sc
->mutex
);
2338 #define SUPPORTED_FILTERS \
2339 (FIF_PROMISC_IN_BSS | \
2343 FIF_BCN_PRBRESP_PROMISC | \
2346 /* FIXME: sc->sc_full_reset ? */
2347 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
2348 unsigned int changed_flags
,
2349 unsigned int *total_flags
,
2351 struct dev_mc_list
*mclist
)
2353 struct ath_wiphy
*aphy
= hw
->priv
;
2354 struct ath_softc
*sc
= aphy
->sc
;
2357 changed_flags
&= SUPPORTED_FILTERS
;
2358 *total_flags
&= SUPPORTED_FILTERS
;
2360 sc
->rx
.rxfilter
= *total_flags
;
2361 ath9k_ps_wakeup(sc
);
2362 rfilt
= ath_calcrxfilter(sc
);
2363 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
2364 ath9k_ps_restore(sc
);
2366 DPRINTF(sc
, ATH_DBG_CONFIG
, "Set HW RX filter: 0x%x\n", sc
->rx
.rxfilter
);
2369 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
2370 struct ieee80211_vif
*vif
,
2371 enum sta_notify_cmd cmd
,
2372 struct ieee80211_sta
*sta
)
2374 struct ath_wiphy
*aphy
= hw
->priv
;
2375 struct ath_softc
*sc
= aphy
->sc
;
2378 case STA_NOTIFY_ADD
:
2379 ath_node_attach(sc
, sta
);
2381 case STA_NOTIFY_REMOVE
:
2382 ath_node_detach(sc
, sta
);
2389 static int ath9k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
2390 const struct ieee80211_tx_queue_params
*params
)
2392 struct ath_wiphy
*aphy
= hw
->priv
;
2393 struct ath_softc
*sc
= aphy
->sc
;
2394 struct ath9k_tx_queue_info qi
;
2397 if (queue
>= WME_NUM_AC
)
2400 mutex_lock(&sc
->mutex
);
2402 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
2404 qi
.tqi_aifs
= params
->aifs
;
2405 qi
.tqi_cwmin
= params
->cw_min
;
2406 qi
.tqi_cwmax
= params
->cw_max
;
2407 qi
.tqi_burstTime
= params
->txop
;
2408 qnum
= ath_get_hal_qnum(queue
, sc
);
2410 DPRINTF(sc
, ATH_DBG_CONFIG
,
2411 "Configure tx [queue/halq] [%d/%d], "
2412 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
2413 queue
, qnum
, params
->aifs
, params
->cw_min
,
2414 params
->cw_max
, params
->txop
);
2416 ret
= ath_txq_update(sc
, qnum
, &qi
);
2418 DPRINTF(sc
, ATH_DBG_FATAL
, "TXQ Update failed\n");
2420 mutex_unlock(&sc
->mutex
);
2425 static int ath9k_set_key(struct ieee80211_hw
*hw
,
2426 enum set_key_cmd cmd
,
2427 struct ieee80211_vif
*vif
,
2428 struct ieee80211_sta
*sta
,
2429 struct ieee80211_key_conf
*key
)
2431 struct ath_wiphy
*aphy
= hw
->priv
;
2432 struct ath_softc
*sc
= aphy
->sc
;
2435 if (modparam_nohwcrypt
)
2438 mutex_lock(&sc
->mutex
);
2439 ath9k_ps_wakeup(sc
);
2440 DPRINTF(sc
, ATH_DBG_CONFIG
, "Set HW Key\n");
2444 ret
= ath_key_config(sc
, vif
, sta
, key
);
2446 key
->hw_key_idx
= ret
;
2447 /* push IV and Michael MIC generation to stack */
2448 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
2449 if (key
->alg
== ALG_TKIP
)
2450 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
2451 if (sc
->sc_ah
->sw_mgmt_crypto
&& key
->alg
== ALG_CCMP
)
2452 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT
;
2457 ath_key_delete(sc
, key
);
2463 ath9k_ps_restore(sc
);
2464 mutex_unlock(&sc
->mutex
);
2469 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
2470 struct ieee80211_vif
*vif
,
2471 struct ieee80211_bss_conf
*bss_conf
,
2474 struct ath_wiphy
*aphy
= hw
->priv
;
2475 struct ath_softc
*sc
= aphy
->sc
;
2476 struct ath_hw
*ah
= sc
->sc_ah
;
2477 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
2481 mutex_lock(&sc
->mutex
);
2484 * TODO: Need to decide which hw opmode to use for
2485 * multi-interface cases
2486 * XXX: This belongs into add_interface!
2488 if (vif
->type
== NL80211_IFTYPE_AP
&&
2489 ah
->opmode
!= NL80211_IFTYPE_AP
) {
2490 ah
->opmode
= NL80211_IFTYPE_STATION
;
2491 ath9k_hw_setopmode(ah
);
2492 memcpy(sc
->curbssid
, sc
->sc_ah
->macaddr
, ETH_ALEN
);
2494 ath9k_hw_write_associd(sc
);
2495 /* Request full reset to get hw opmode changed properly */
2496 sc
->sc_flags
|= SC_OP_FULL_RESET
;
2499 if ((changed
& BSS_CHANGED_BSSID
) &&
2500 !is_zero_ether_addr(bss_conf
->bssid
)) {
2501 switch (vif
->type
) {
2502 case NL80211_IFTYPE_STATION
:
2503 case NL80211_IFTYPE_ADHOC
:
2504 case NL80211_IFTYPE_MESH_POINT
:
2506 memcpy(sc
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
2507 memcpy(avp
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
2509 ath9k_hw_write_associd(sc
);
2511 /* Set aggregation protection mode parameters */
2512 sc
->config
.ath_aggr_prot
= 0;
2514 DPRINTF(sc
, ATH_DBG_CONFIG
,
2515 "RX filter 0x%x bssid %pM aid 0x%x\n",
2516 rfilt
, sc
->curbssid
, sc
->curaid
);
2518 /* need to reconfigure the beacon */
2519 sc
->sc_flags
&= ~SC_OP_BEACONS
;
2527 if ((vif
->type
== NL80211_IFTYPE_ADHOC
) ||
2528 (vif
->type
== NL80211_IFTYPE_AP
) ||
2529 (vif
->type
== NL80211_IFTYPE_MESH_POINT
)) {
2530 if ((changed
& BSS_CHANGED_BEACON
) ||
2531 (changed
& BSS_CHANGED_BEACON_ENABLED
&&
2532 bss_conf
->enable_beacon
)) {
2534 * Allocate and setup the beacon frame.
2536 * Stop any previous beacon DMA. This may be
2537 * necessary, for example, when an ibss merge
2538 * causes reconfiguration; we may be called
2539 * with beacon transmission active.
2541 ath9k_hw_stoptxdma(sc
->sc_ah
, sc
->beacon
.beaconq
);
2543 error
= ath_beacon_alloc(aphy
, vif
);
2545 ath_beacon_config(sc
, vif
);
2549 /* Check for WLAN_CAPABILITY_PRIVACY ? */
2550 if ((avp
->av_opmode
!= NL80211_IFTYPE_STATION
)) {
2551 for (i
= 0; i
< IEEE80211_WEP_NKID
; i
++)
2552 if (ath9k_hw_keyisvalid(sc
->sc_ah
, (u16
)i
))
2553 ath9k_hw_keysetmac(sc
->sc_ah
,
2558 /* Only legacy IBSS for now */
2559 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
2560 ath_update_chainmask(sc
, 0);
2562 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
2563 DPRINTF(sc
, ATH_DBG_CONFIG
, "BSS Changed PREAMBLE %d\n",
2564 bss_conf
->use_short_preamble
);
2565 if (bss_conf
->use_short_preamble
)
2566 sc
->sc_flags
|= SC_OP_PREAMBLE_SHORT
;
2568 sc
->sc_flags
&= ~SC_OP_PREAMBLE_SHORT
;
2571 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
2572 DPRINTF(sc
, ATH_DBG_CONFIG
, "BSS Changed CTS PROT %d\n",
2573 bss_conf
->use_cts_prot
);
2574 if (bss_conf
->use_cts_prot
&&
2575 hw
->conf
.channel
->band
!= IEEE80211_BAND_5GHZ
)
2576 sc
->sc_flags
|= SC_OP_PROTECT_ENABLE
;
2578 sc
->sc_flags
&= ~SC_OP_PROTECT_ENABLE
;
2581 if (changed
& BSS_CHANGED_ASSOC
) {
2582 DPRINTF(sc
, ATH_DBG_CONFIG
, "BSS Changed ASSOC %d\n",
2584 ath9k_bss_assoc_info(sc
, vif
, bss_conf
);
2588 * The HW TSF has to be reset when the beacon interval changes.
2589 * We set the flag here, and ath_beacon_config_ap() would take this
2590 * into account when it gets called through the subsequent
2591 * config_interface() call - with IFCC_BEACON in the changed field.
2594 if (changed
& BSS_CHANGED_BEACON_INT
) {
2595 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2596 sc
->beacon_interval
= bss_conf
->beacon_int
;
2599 mutex_unlock(&sc
->mutex
);
2602 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
)
2605 struct ath_wiphy
*aphy
= hw
->priv
;
2606 struct ath_softc
*sc
= aphy
->sc
;
2608 mutex_lock(&sc
->mutex
);
2609 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
2610 mutex_unlock(&sc
->mutex
);
2615 static void ath9k_set_tsf(struct ieee80211_hw
*hw
, u64 tsf
)
2617 struct ath_wiphy
*aphy
= hw
->priv
;
2618 struct ath_softc
*sc
= aphy
->sc
;
2620 mutex_lock(&sc
->mutex
);
2621 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
2622 mutex_unlock(&sc
->mutex
);
2625 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
)
2627 struct ath_wiphy
*aphy
= hw
->priv
;
2628 struct ath_softc
*sc
= aphy
->sc
;
2630 mutex_lock(&sc
->mutex
);
2631 ath9k_hw_reset_tsf(sc
->sc_ah
);
2632 mutex_unlock(&sc
->mutex
);
2635 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
2636 enum ieee80211_ampdu_mlme_action action
,
2637 struct ieee80211_sta
*sta
,
2640 struct ath_wiphy
*aphy
= hw
->priv
;
2641 struct ath_softc
*sc
= aphy
->sc
;
2645 case IEEE80211_AMPDU_RX_START
:
2646 if (!(sc
->sc_flags
& SC_OP_RXAGGR
))
2649 case IEEE80211_AMPDU_RX_STOP
:
2651 case IEEE80211_AMPDU_TX_START
:
2652 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
2654 DPRINTF(sc
, ATH_DBG_FATAL
,
2655 "Unable to start TX aggregation\n");
2657 ieee80211_start_tx_ba_cb_irqsafe(hw
, sta
->addr
, tid
);
2659 case IEEE80211_AMPDU_TX_STOP
:
2660 ret
= ath_tx_aggr_stop(sc
, sta
, tid
);
2662 DPRINTF(sc
, ATH_DBG_FATAL
,
2663 "Unable to stop TX aggregation\n");
2665 ieee80211_stop_tx_ba_cb_irqsafe(hw
, sta
->addr
, tid
);
2667 case IEEE80211_AMPDU_TX_OPERATIONAL
:
2668 ath_tx_aggr_resume(sc
, sta
, tid
);
2671 DPRINTF(sc
, ATH_DBG_FATAL
, "Unknown AMPDU action\n");
2677 static void ath9k_sw_scan_start(struct ieee80211_hw
*hw
)
2679 struct ath_wiphy
*aphy
= hw
->priv
;
2680 struct ath_softc
*sc
= aphy
->sc
;
2682 if (ath9k_wiphy_scanning(sc
)) {
2683 printk(KERN_DEBUG
"ath9k: Two wiphys trying to scan at the "
2686 * Do not allow the concurrent scanning state for now. This
2687 * could be improved with scanning control moved into ath9k.
2692 aphy
->state
= ATH_WIPHY_SCAN
;
2693 ath9k_wiphy_pause_all_forced(sc
, aphy
);
2695 spin_lock_bh(&sc
->ani_lock
);
2696 sc
->sc_flags
|= SC_OP_SCANNING
;
2697 spin_unlock_bh(&sc
->ani_lock
);
2700 static void ath9k_sw_scan_complete(struct ieee80211_hw
*hw
)
2702 struct ath_wiphy
*aphy
= hw
->priv
;
2703 struct ath_softc
*sc
= aphy
->sc
;
2705 spin_lock_bh(&sc
->ani_lock
);
2706 aphy
->state
= ATH_WIPHY_ACTIVE
;
2707 sc
->sc_flags
&= ~SC_OP_SCANNING
;
2708 sc
->sc_flags
|= SC_OP_FULL_RESET
;
2709 spin_unlock_bh(&sc
->ani_lock
);
2712 struct ieee80211_ops ath9k_ops
= {
2714 .start
= ath9k_start
,
2716 .add_interface
= ath9k_add_interface
,
2717 .remove_interface
= ath9k_remove_interface
,
2718 .config
= ath9k_config
,
2719 .configure_filter
= ath9k_configure_filter
,
2720 .sta_notify
= ath9k_sta_notify
,
2721 .conf_tx
= ath9k_conf_tx
,
2722 .bss_info_changed
= ath9k_bss_info_changed
,
2723 .set_key
= ath9k_set_key
,
2724 .get_tsf
= ath9k_get_tsf
,
2725 .set_tsf
= ath9k_set_tsf
,
2726 .reset_tsf
= ath9k_reset_tsf
,
2727 .ampdu_action
= ath9k_ampdu_action
,
2728 .sw_scan_start
= ath9k_sw_scan_start
,
2729 .sw_scan_complete
= ath9k_sw_scan_complete
,
2730 .rfkill_poll
= ath9k_rfkill_poll_state
,
2736 } ath_mac_bb_names
[] = {
2737 { AR_SREV_VERSION_5416_PCI
, "5416" },
2738 { AR_SREV_VERSION_5416_PCIE
, "5418" },
2739 { AR_SREV_VERSION_9100
, "9100" },
2740 { AR_SREV_VERSION_9160
, "9160" },
2741 { AR_SREV_VERSION_9280
, "9280" },
2742 { AR_SREV_VERSION_9285
, "9285" }
2748 } ath_rf_names
[] = {
2750 { AR_RAD5133_SREV_MAJOR
, "5133" },
2751 { AR_RAD5122_SREV_MAJOR
, "5122" },
2752 { AR_RAD2133_SREV_MAJOR
, "2133" },
2753 { AR_RAD2122_SREV_MAJOR
, "2122" }
2757 * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
2760 ath_mac_bb_name(u32 mac_bb_version
)
2764 for (i
=0; i
<ARRAY_SIZE(ath_mac_bb_names
); i
++) {
2765 if (ath_mac_bb_names
[i
].version
== mac_bb_version
) {
2766 return ath_mac_bb_names
[i
].name
;
2774 * Return the RF name. "????" is returned if the RF is unknown.
2777 ath_rf_name(u16 rf_version
)
2781 for (i
=0; i
<ARRAY_SIZE(ath_rf_names
); i
++) {
2782 if (ath_rf_names
[i
].version
== rf_version
) {
2783 return ath_rf_names
[i
].name
;
2790 static int __init
ath9k_init(void)
2794 /* Register rate control algorithm */
2795 error
= ath_rate_control_register();
2798 "ath9k: Unable to register rate control "
2804 error
= ath9k_debug_create_root();
2807 "ath9k: Unable to create debugfs root: %d\n",
2809 goto err_rate_unregister
;
2812 error
= ath_pci_init();
2815 "ath9k: No PCI devices found, driver not installed.\n");
2817 goto err_remove_root
;
2820 error
= ath_ahb_init();
2832 ath9k_debug_remove_root();
2833 err_rate_unregister
:
2834 ath_rate_control_unregister();
2838 module_init(ath9k_init
);
2840 static void __exit
ath9k_exit(void)
2844 ath9k_debug_remove_root();
2845 ath_rate_control_unregister();
2846 printk(KERN_INFO
"%s: Driver unloaded\n", dev_info
);
2848 module_exit(ath9k_exit
);