2 * Copyright (c) 2008-2011 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/slab.h>
18 #include <linux/ath9k_platform.h>
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 unsigned int ath9k_debug = ATH_DBG_DEFAULT;
30 module_param_named(debug, ath9k_debug, uint, 0);
31 MODULE_PARM_DESC(debug, "Debugging mask");
33 int ath9k_modparam_nohwcrypt;
34 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444);
35 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
38 module_param_named(blink, led_blink, int, 0444);
39 MODULE_PARM_DESC(blink, "Enable LED blink on activity");
41 static int ath9k_btcoex_enable;
42 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
43 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
45 bool is_ath9k_unloaded;
46 /* We use the hw_value as an index into our private channel structure */
48 #define CHAN2G(_freq, _idx) { \
49 .band = IEEE80211_BAND_2GHZ, \
50 .center_freq = (_freq), \
55 #define CHAN5G(_freq, _idx) { \
56 .band = IEEE80211_BAND_5GHZ, \
57 .center_freq = (_freq), \
62 /* Some 2 GHz radios are actually tunable on 2312-2732
63 * on 5 MHz steps, we support the channels which we know
64 * we have calibration data for all cards though to make
66 static const struct ieee80211_channel ath9k_2ghz_chantable[] = {
67 CHAN2G(2412, 0), /* Channel 1 */
68 CHAN2G(2417, 1), /* Channel 2 */
69 CHAN2G(2422, 2), /* Channel 3 */
70 CHAN2G(2427, 3), /* Channel 4 */
71 CHAN2G(2432, 4), /* Channel 5 */
72 CHAN2G(2437, 5), /* Channel 6 */
73 CHAN2G(2442, 6), /* Channel 7 */
74 CHAN2G(2447, 7), /* Channel 8 */
75 CHAN2G(2452, 8), /* Channel 9 */
76 CHAN2G(2457, 9), /* Channel 10 */
77 CHAN2G(2462, 10), /* Channel 11 */
78 CHAN2G(2467, 11), /* Channel 12 */
79 CHAN2G(2472, 12), /* Channel 13 */
80 CHAN2G(2484, 13), /* Channel 14 */
83 /* Some 5 GHz radios are actually tunable on XXXX-YYYY
84 * on 5 MHz steps, we support the channels which we know
85 * we have calibration data for all cards though to make
87 static const struct ieee80211_channel ath9k_5ghz_chantable[] = {
88 /* _We_ call this UNII 1 */
89 CHAN5G(5180, 14), /* Channel 36 */
90 CHAN5G(5200, 15), /* Channel 40 */
91 CHAN5G(5220, 16), /* Channel 44 */
92 CHAN5G(5240, 17), /* Channel 48 */
93 /* _We_ call this UNII 2 */
94 CHAN5G(5260, 18), /* Channel 52 */
95 CHAN5G(5280, 19), /* Channel 56 */
96 CHAN5G(5300, 20), /* Channel 60 */
97 CHAN5G(5320, 21), /* Channel 64 */
98 /* _We_ call this "Middle band" */
99 CHAN5G(5500, 22), /* Channel 100 */
100 CHAN5G(5520, 23), /* Channel 104 */
101 CHAN5G(5540, 24), /* Channel 108 */
102 CHAN5G(5560, 25), /* Channel 112 */
103 CHAN5G(5580, 26), /* Channel 116 */
104 CHAN5G(5600, 27), /* Channel 120 */
105 CHAN5G(5620, 28), /* Channel 124 */
106 CHAN5G(5640, 29), /* Channel 128 */
107 CHAN5G(5660, 30), /* Channel 132 */
108 CHAN5G(5680, 31), /* Channel 136 */
109 CHAN5G(5700, 32), /* Channel 140 */
110 /* _We_ call this UNII 3 */
111 CHAN5G(5745, 33), /* Channel 149 */
112 CHAN5G(5765, 34), /* Channel 153 */
113 CHAN5G(5785, 35), /* Channel 157 */
114 CHAN5G(5805, 36), /* Channel 161 */
115 CHAN5G(5825, 37), /* Channel 165 */
118 /* Atheros hardware rate code addition for short premble */
119 #define SHPCHECK(__hw_rate, __flags) \
120 ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0)
122 #define RATE(_bitrate, _hw_rate, _flags) { \
123 .bitrate = (_bitrate), \
125 .hw_value = (_hw_rate), \
126 .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
129 static struct ieee80211_rate ath9k_legacy_rates[] = {
131 RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE),
132 RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE),
133 RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE),
144 #ifdef CONFIG_MAC80211_LEDS
145 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = {
146 { .throughput = 0 * 1024, .blink_time = 334 },
147 { .throughput = 1 * 1024, .blink_time = 260 },
148 { .throughput = 5 * 1024, .blink_time = 220 },
149 { .throughput = 10 * 1024, .blink_time = 190 },
150 { .throughput = 20 * 1024, .blink_time = 170 },
151 { .throughput = 50 * 1024, .blink_time = 150 },
152 { .throughput = 70 * 1024, .blink_time = 130 },
153 { .throughput = 100 * 1024, .blink_time = 110 },
154 { .throughput = 200 * 1024, .blink_time = 80 },
155 { .throughput = 300 * 1024, .blink_time = 50 },
159 static void ath9k_deinit_softc(struct ath_softc *sc);
162 * Read and write, they both share the same lock. We do this to serialize
163 * reads and writes on Atheros 802.11n PCI devices only. This is required
164 * as the FIFO on these devices can only accept sanely 2 requests.
167 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
169 struct ath_hw *ah = (struct ath_hw *) hw_priv;
170 struct ath_common *common = ath9k_hw_common(ah);
171 struct ath_softc *sc = (struct ath_softc *) common->priv;
173 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
175 spin_lock_irqsave(&sc->sc_serial_rw, flags);
176 iowrite32(val, sc->mem + reg_offset);
177 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
179 iowrite32(val, sc->mem + reg_offset);
182 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
184 struct ath_hw *ah = (struct ath_hw *) hw_priv;
185 struct ath_common *common = ath9k_hw_common(ah);
186 struct ath_softc *sc = (struct ath_softc *) common->priv;
189 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
191 spin_lock_irqsave(&sc->sc_serial_rw, flags);
192 val = ioread32(sc->mem + reg_offset);
193 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
195 val = ioread32(sc->mem + reg_offset);
199 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
204 val = ioread32(sc->mem + reg_offset);
207 iowrite32(val, sc->mem + reg_offset);
212 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
214 struct ath_hw *ah = (struct ath_hw *) hw_priv;
215 struct ath_common *common = ath9k_hw_common(ah);
216 struct ath_softc *sc = (struct ath_softc *) common->priv;
217 unsigned long uninitialized_var(flags);
220 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
221 spin_lock_irqsave(&sc->sc_serial_rw, flags);
222 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
223 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
225 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
230 /**************************/
232 /**************************/
234 static void setup_ht_cap(struct ath_softc *sc,
235 struct ieee80211_sta_ht_cap *ht_info)
237 struct ath_hw *ah = sc->sc_ah;
238 struct ath_common *common = ath9k_hw_common(ah);
239 u8 tx_streams, rx_streams;
242 ht_info->ht_supported = true;
243 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
244 IEEE80211_HT_CAP_SM_PS |
245 IEEE80211_HT_CAP_SGI_40 |
246 IEEE80211_HT_CAP_DSSSCCK40;
248 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC)
249 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
251 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
252 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
254 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
255 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
257 if (AR_SREV_9330(ah) || AR_SREV_9485(ah))
259 else if (AR_SREV_9300_20_OR_LATER(ah))
264 if (AR_SREV_9280_20_OR_LATER(ah)) {
265 if (max_streams >= 2)
266 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
267 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
270 /* set up supported mcs set */
271 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
272 tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, max_streams);
273 rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, max_streams);
275 ath_dbg(common, ATH_DBG_CONFIG,
276 "TX streams %d, RX streams: %d\n",
277 tx_streams, rx_streams);
279 if (tx_streams != rx_streams) {
280 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
281 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
282 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
285 for (i = 0; i < rx_streams; i++)
286 ht_info->mcs.rx_mask[i] = 0xff;
288 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
291 static int ath9k_reg_notifier(struct wiphy *wiphy,
292 struct regulatory_request *request)
294 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
295 struct ath_softc *sc = hw->priv;
296 struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah);
298 return ath_reg_notifier_apply(wiphy, request, reg);
302 * This function will allocate both the DMA descriptor structure, and the
303 * buffers it contains. These are used to contain the descriptors used
306 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
307 struct list_head *head, const char *name,
308 int nbuf, int ndesc, bool is_tx)
310 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
313 int i, bsize, error, desc_len;
315 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
318 INIT_LIST_HEAD(head);
321 desc_len = sc->sc_ah->caps.tx_desc_len;
323 desc_len = sizeof(struct ath_desc);
325 /* ath_desc must be a multiple of DWORDs */
326 if ((desc_len % 4) != 0) {
327 ath_err(common, "ath_desc not DWORD aligned\n");
328 BUG_ON((desc_len % 4) != 0);
333 dd->dd_desc_len = desc_len * nbuf * ndesc;
336 * Need additional DMA memory because we can't use
337 * descriptors that cross the 4K page boundary. Assume
338 * one skipped descriptor per 4K page.
340 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
342 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
345 while (ndesc_skipped) {
346 dma_len = ndesc_skipped * desc_len;
347 dd->dd_desc_len += dma_len;
349 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
353 /* allocate descriptors */
354 dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
355 &dd->dd_desc_paddr, GFP_KERNEL);
356 if (dd->dd_desc == NULL) {
360 ds = (u8 *) dd->dd_desc;
361 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
362 name, ds, (u32) dd->dd_desc_len,
363 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
365 /* allocate buffers */
366 bsize = sizeof(struct ath_buf) * nbuf;
367 bf = kzalloc(bsize, GFP_KERNEL);
374 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
376 bf->bf_daddr = DS2PHYS(dd, ds);
378 if (!(sc->sc_ah->caps.hw_caps &
379 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
381 * Skip descriptor addresses which can cause 4KB
382 * boundary crossing (addr + length) with a 32 dword
385 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
386 BUG_ON((caddr_t) bf->bf_desc >=
387 ((caddr_t) dd->dd_desc +
390 ds += (desc_len * ndesc);
392 bf->bf_daddr = DS2PHYS(dd, ds);
395 list_add_tail(&bf->list, head);
399 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
402 memset(dd, 0, sizeof(*dd));
406 void ath9k_init_crypto(struct ath_softc *sc)
408 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
411 /* Get the hardware key cache size. */
412 common->keymax = AR_KEYTABLE_SIZE;
415 * Reset the key cache since some parts do not
416 * reset the contents on initial power up.
418 for (i = 0; i < common->keymax; i++)
419 ath_hw_keyreset(common, (u16) i);
422 * Check whether the separate key cache entries
423 * are required to handle both tx+rx MIC keys.
424 * With split mic keys the number of stations is limited
425 * to 27 otherwise 59.
427 if (sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
428 common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
431 static int ath9k_init_btcoex(struct ath_softc *sc)
436 switch (sc->sc_ah->btcoex_hw.scheme) {
437 case ATH_BTCOEX_CFG_NONE:
439 case ATH_BTCOEX_CFG_2WIRE:
440 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
442 case ATH_BTCOEX_CFG_3WIRE:
443 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
444 r = ath_init_btcoex_timer(sc);
447 txq = sc->tx.txq_map[WME_AC_BE];
448 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
449 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
459 static int ath9k_init_queues(struct ath_softc *sc)
463 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
464 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
466 sc->config.cabqReadytime = ATH_CABQ_READY_TIME;
469 for (i = 0; i < WME_NUM_AC; i++) {
470 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
471 sc->tx.txq_map[i]->mac80211_qnum = i;
476 static int ath9k_init_channels_rates(struct ath_softc *sc)
480 BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) +
481 ARRAY_SIZE(ath9k_5ghz_chantable) !=
484 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
485 channels = kmemdup(ath9k_2ghz_chantable,
486 sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
490 sc->sbands[IEEE80211_BAND_2GHZ].channels = channels;
491 sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
492 sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
493 ARRAY_SIZE(ath9k_2ghz_chantable);
494 sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
495 sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
496 ARRAY_SIZE(ath9k_legacy_rates);
499 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
500 channels = kmemdup(ath9k_5ghz_chantable,
501 sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
503 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
504 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
508 sc->sbands[IEEE80211_BAND_5GHZ].channels = channels;
509 sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
510 sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
511 ARRAY_SIZE(ath9k_5ghz_chantable);
512 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
513 ath9k_legacy_rates + 4;
514 sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
515 ARRAY_SIZE(ath9k_legacy_rates) - 4;
520 static void ath9k_init_misc(struct ath_softc *sc)
522 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
524 setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
526 sc->config.txpowlimit = ATH_TXPOWER_MAX;
528 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
529 sc->sc_flags |= SC_OP_TXAGGR;
530 sc->sc_flags |= SC_OP_RXAGGR;
533 common->tx_chainmask = sc->sc_ah->caps.tx_chainmask;
534 common->rx_chainmask = sc->sc_ah->caps.rx_chainmask;
536 ath9k_hw_set_diversity(sc->sc_ah, true);
537 sc->rx.defant = ath9k_hw_getdefantenna(sc->sc_ah);
539 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
541 sc->beacon.slottime = ATH9K_SLOT_TIME_9;
543 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
544 sc->beacon.bslot[i] = NULL;
546 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
547 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
550 static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
551 const struct ath_bus_ops *bus_ops)
553 struct ath9k_platform_data *pdata = sc->dev->platform_data;
554 struct ath_hw *ah = NULL;
555 struct ath_common *common;
559 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
564 ah->hw_version.devid = devid;
565 ah->hw_version.subsysid = subsysid;
566 ah->reg_ops.read = ath9k_ioread32;
567 ah->reg_ops.write = ath9k_iowrite32;
568 ah->reg_ops.rmw = ath9k_reg_rmw;
572 ah->ah_flags |= AH_USE_EEPROM;
573 sc->sc_ah->led_pin = -1;
575 sc->sc_ah->gpio_mask = pdata->gpio_mask;
576 sc->sc_ah->gpio_val = pdata->gpio_val;
577 sc->sc_ah->led_pin = pdata->led_pin;
578 ah->is_clk_25mhz = pdata->is_clk_25mhz;
579 ah->get_mac_revision = pdata->get_mac_revision;
580 ah->external_reset = pdata->external_reset;
583 common = ath9k_hw_common(ah);
584 common->ops = &ah->reg_ops;
585 common->bus_ops = bus_ops;
589 common->debug_mask = ath9k_debug;
590 common->btcoex_enabled = ath9k_btcoex_enable == 1;
591 common->disable_ani = false;
592 spin_lock_init(&common->cc_lock);
594 spin_lock_init(&sc->sc_serial_rw);
595 spin_lock_init(&sc->sc_pm_lock);
596 mutex_init(&sc->mutex);
597 #ifdef CONFIG_ATH9K_DEBUGFS
598 spin_lock_init(&sc->nodes_lock);
599 INIT_LIST_HEAD(&sc->nodes);
601 tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
602 tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
606 * Cache line size is used to size and align various
607 * structures used to communicate with the hardware.
609 ath_read_cachesize(common, &csz);
610 common->cachelsz = csz << 2; /* convert to bytes */
612 /* Initializes the hardware for all supported chipsets */
613 ret = ath9k_hw_init(ah);
617 if (pdata && pdata->macaddr)
618 memcpy(common->macaddr, pdata->macaddr, ETH_ALEN);
620 ret = ath9k_init_queues(sc);
624 ret = ath9k_init_btcoex(sc);
628 ret = ath9k_init_channels_rates(sc);
632 ath9k_init_crypto(sc);
638 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
639 if (ATH_TXQ_SETUP(sc, i))
640 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
651 static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
653 struct ieee80211_supported_band *sband;
654 struct ieee80211_channel *chan;
655 struct ath_hw *ah = sc->sc_ah;
656 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
659 sband = &sc->sbands[band];
660 for (i = 0; i < sband->n_channels; i++) {
661 chan = &sband->channels[i];
662 ah->curchan = &ah->channels[chan->hw_value];
663 ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20);
664 ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true);
665 chan->max_power = reg->max_power_level / 2;
669 static void ath9k_init_txpower_limits(struct ath_softc *sc)
671 struct ath_hw *ah = sc->sc_ah;
672 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
673 struct ath9k_channel *curchan = ah->curchan;
675 ah->txchainmask = common->tx_chainmask;
676 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
677 ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ);
678 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
679 ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ);
681 ah->curchan = curchan;
684 void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
686 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
688 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
689 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
690 IEEE80211_HW_SIGNAL_DBM |
691 IEEE80211_HW_SUPPORTS_PS |
692 IEEE80211_HW_PS_NULLFUNC_STACK |
693 IEEE80211_HW_SPECTRUM_MGMT |
694 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
696 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
697 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
699 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
700 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
702 hw->wiphy->interface_modes =
703 BIT(NL80211_IFTYPE_P2P_GO) |
704 BIT(NL80211_IFTYPE_P2P_CLIENT) |
705 BIT(NL80211_IFTYPE_AP) |
706 BIT(NL80211_IFTYPE_WDS) |
707 BIT(NL80211_IFTYPE_STATION) |
708 BIT(NL80211_IFTYPE_ADHOC) |
709 BIT(NL80211_IFTYPE_MESH_POINT);
711 if (AR_SREV_5416(sc->sc_ah))
712 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
714 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
718 hw->channel_change_time = 5000;
719 hw->max_listen_interval = 10;
720 hw->max_rate_tries = 10;
721 hw->sta_data_size = sizeof(struct ath_node);
722 hw->vif_data_size = sizeof(struct ath_vif);
724 #ifdef CONFIG_ATH9K_RATE_CONTROL
725 hw->rate_control_algorithm = "ath9k_rate_control";
728 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
729 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
730 &sc->sbands[IEEE80211_BAND_2GHZ];
731 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
732 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
733 &sc->sbands[IEEE80211_BAND_5GHZ];
735 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
736 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
737 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
738 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
739 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
742 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
745 int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
746 const struct ath_bus_ops *bus_ops)
748 struct ieee80211_hw *hw = sc->hw;
749 struct ath_common *common;
752 struct ath_regulatory *reg;
754 /* Bring up device */
755 error = ath9k_init_softc(devid, sc, subsysid, bus_ops);
760 common = ath9k_hw_common(ah);
761 ath9k_set_hw_capab(sc, hw);
763 /* Initialize regulatory */
764 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
769 reg = &common->regulatory;
772 error = ath_tx_init(sc, ATH_TXBUF);
777 error = ath_rx_init(sc, ATH_RXBUF);
781 ath9k_init_txpower_limits(sc);
783 #ifdef CONFIG_MAC80211_LEDS
784 /* must be initialized before ieee80211_register_hw */
785 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
786 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
787 ARRAY_SIZE(ath9k_tpt_blink));
790 /* Register with mac80211 */
791 error = ieee80211_register_hw(hw);
795 error = ath9k_init_debug(ah);
797 ath_err(common, "Unable to create debugfs files\n");
801 /* Handle world regulatory */
802 if (!ath_is_world_regd(reg)) {
803 error = regulatory_hint(hw->wiphy, reg->alpha2);
808 INIT_WORK(&sc->hw_check_work, ath_hw_check);
809 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
810 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
811 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
814 ath_start_rfkill_poll(sc);
819 ieee80211_unregister_hw(hw);
827 ath9k_deinit_softc(sc);
832 /*****************************/
833 /* De-Initialization */
834 /*****************************/
836 static void ath9k_deinit_softc(struct ath_softc *sc)
840 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
841 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
843 if (sc->sbands[IEEE80211_BAND_5GHZ].channels)
844 kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
846 if ((sc->btcoex.no_stomp_timer) &&
847 sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
848 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
850 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
851 if (ATH_TXQ_SETUP(sc, i))
852 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
854 ath9k_hw_deinit(sc->sc_ah);
860 void ath9k_deinit_device(struct ath_softc *sc)
862 struct ieee80211_hw *hw = sc->hw;
866 wiphy_rfkill_stop_polling(sc->hw->wiphy);
869 ath9k_ps_restore(sc);
871 ieee80211_unregister_hw(hw);
874 ath9k_deinit_softc(sc);
877 void ath_descdma_cleanup(struct ath_softc *sc,
878 struct ath_descdma *dd,
879 struct list_head *head)
881 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
884 INIT_LIST_HEAD(head);
885 kfree(dd->dd_bufptr);
886 memset(dd, 0, sizeof(*dd));
889 /************************/
891 /************************/
893 static int __init ath9k_init(void)
897 /* Register rate control algorithm */
898 error = ath_rate_control_register();
901 "ath9k: Unable to register rate control "
907 error = ath_pci_init();
910 "ath9k: No PCI devices found, driver not installed.\n");
912 goto err_rate_unregister;
915 error = ath_ahb_init();
927 ath_rate_control_unregister();
931 module_init(ath9k_init);
933 static void __exit ath9k_exit(void)
935 is_ath9k_unloaded = true;
938 ath_rate_control_unregister();
939 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
941 module_exit(ath9k_exit);