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(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
201 struct ath_hw *ah = (struct ath_hw *) hw_priv;
202 struct ath_common *common = ath9k_hw_common(ah);
203 struct ath_softc *sc = (struct ath_softc *) common->priv;
204 unsigned long uninitialized_var(flags);
207 if (ah->config.serialize_regmode == SER_REG_MODE_ON)
208 spin_lock_irqsave(&sc->sc_serial_rw, flags);
210 val = ioread32(sc->mem + reg_offset);
213 iowrite32(val, sc->mem + reg_offset);
215 if (ah->config.serialize_regmode == SER_REG_MODE_ON)
216 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
221 /**************************/
223 /**************************/
225 static void setup_ht_cap(struct ath_softc *sc,
226 struct ieee80211_sta_ht_cap *ht_info)
228 struct ath_hw *ah = sc->sc_ah;
229 struct ath_common *common = ath9k_hw_common(ah);
230 u8 tx_streams, rx_streams;
233 ht_info->ht_supported = true;
234 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
235 IEEE80211_HT_CAP_SM_PS |
236 IEEE80211_HT_CAP_SGI_40 |
237 IEEE80211_HT_CAP_DSSSCCK40;
239 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC)
240 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
242 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
243 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
245 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
246 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
248 if (AR_SREV_9485(ah))
250 else if (AR_SREV_9300_20_OR_LATER(ah))
255 if (AR_SREV_9280_20_OR_LATER(ah)) {
256 if (max_streams >= 2)
257 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
258 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
261 /* set up supported mcs set */
262 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
263 tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, max_streams);
264 rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, max_streams);
266 ath_dbg(common, ATH_DBG_CONFIG,
267 "TX streams %d, RX streams: %d\n",
268 tx_streams, rx_streams);
270 if (tx_streams != rx_streams) {
271 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
272 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
273 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
276 for (i = 0; i < rx_streams; i++)
277 ht_info->mcs.rx_mask[i] = 0xff;
279 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
282 static int ath9k_reg_notifier(struct wiphy *wiphy,
283 struct regulatory_request *request)
285 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
286 struct ath_softc *sc = hw->priv;
287 struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah);
289 return ath_reg_notifier_apply(wiphy, request, reg);
293 * This function will allocate both the DMA descriptor structure, and the
294 * buffers it contains. These are used to contain the descriptors used
297 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
298 struct list_head *head, const char *name,
299 int nbuf, int ndesc, bool is_tx)
301 #define DS2PHYS(_dd, _ds) \
302 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
303 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
304 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
305 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
308 int i, bsize, error, desc_len;
310 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
313 INIT_LIST_HEAD(head);
316 desc_len = sc->sc_ah->caps.tx_desc_len;
318 desc_len = sizeof(struct ath_desc);
320 /* ath_desc must be a multiple of DWORDs */
321 if ((desc_len % 4) != 0) {
322 ath_err(common, "ath_desc not DWORD aligned\n");
323 BUG_ON((desc_len % 4) != 0);
328 dd->dd_desc_len = desc_len * nbuf * ndesc;
331 * Need additional DMA memory because we can't use
332 * descriptors that cross the 4K page boundary. Assume
333 * one skipped descriptor per 4K page.
335 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
337 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
340 while (ndesc_skipped) {
341 dma_len = ndesc_skipped * desc_len;
342 dd->dd_desc_len += dma_len;
344 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
348 /* allocate descriptors */
349 dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
350 &dd->dd_desc_paddr, GFP_KERNEL);
351 if (dd->dd_desc == NULL) {
355 ds = (u8 *) dd->dd_desc;
356 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
357 name, ds, (u32) dd->dd_desc_len,
358 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
360 /* allocate buffers */
361 bsize = sizeof(struct ath_buf) * nbuf;
362 bf = kzalloc(bsize, GFP_KERNEL);
369 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
371 bf->bf_daddr = DS2PHYS(dd, ds);
373 if (!(sc->sc_ah->caps.hw_caps &
374 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
376 * Skip descriptor addresses which can cause 4KB
377 * boundary crossing (addr + length) with a 32 dword
380 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
381 BUG_ON((caddr_t) bf->bf_desc >=
382 ((caddr_t) dd->dd_desc +
385 ds += (desc_len * ndesc);
387 bf->bf_daddr = DS2PHYS(dd, ds);
390 list_add_tail(&bf->list, head);
394 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
397 memset(dd, 0, sizeof(*dd));
399 #undef ATH_DESC_4KB_BOUND_CHECK
400 #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED
404 void ath9k_init_crypto(struct ath_softc *sc)
406 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
409 /* Get the hardware key cache size. */
410 common->keymax = AR_KEYTABLE_SIZE;
413 * Reset the key cache since some parts do not
414 * reset the contents on initial power up.
416 for (i = 0; i < common->keymax; i++)
417 ath_hw_keyreset(common, (u16) i);
420 * Check whether the separate key cache entries
421 * are required to handle both tx+rx MIC keys.
422 * With split mic keys the number of stations is limited
423 * to 27 otherwise 59.
425 if (sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
426 common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
429 static int ath9k_init_btcoex(struct ath_softc *sc)
434 switch (sc->sc_ah->btcoex_hw.scheme) {
435 case ATH_BTCOEX_CFG_NONE:
437 case ATH_BTCOEX_CFG_2WIRE:
438 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
440 case ATH_BTCOEX_CFG_3WIRE:
441 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
442 r = ath_init_btcoex_timer(sc);
445 txq = sc->tx.txq_map[WME_AC_BE];
446 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
447 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
457 static int ath9k_init_queues(struct ath_softc *sc)
461 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
462 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
464 sc->config.cabqReadytime = ATH_CABQ_READY_TIME;
467 for (i = 0; i < WME_NUM_AC; i++) {
468 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
469 sc->tx.txq_map[i]->mac80211_qnum = i;
474 static int ath9k_init_channels_rates(struct ath_softc *sc)
478 BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) +
479 ARRAY_SIZE(ath9k_5ghz_chantable) !=
482 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
483 channels = kmemdup(ath9k_2ghz_chantable,
484 sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
488 sc->sbands[IEEE80211_BAND_2GHZ].channels = channels;
489 sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
490 sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
491 ARRAY_SIZE(ath9k_2ghz_chantable);
492 sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
493 sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
494 ARRAY_SIZE(ath9k_legacy_rates);
497 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
498 channels = kmemdup(ath9k_5ghz_chantable,
499 sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
501 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
502 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
506 sc->sbands[IEEE80211_BAND_5GHZ].channels = channels;
507 sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
508 sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
509 ARRAY_SIZE(ath9k_5ghz_chantable);
510 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
511 ath9k_legacy_rates + 4;
512 sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
513 ARRAY_SIZE(ath9k_legacy_rates) - 4;
518 static void ath9k_init_misc(struct ath_softc *sc)
520 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
523 setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
525 sc->config.txpowlimit = ATH_TXPOWER_MAX;
527 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
528 sc->sc_flags |= SC_OP_TXAGGR;
529 sc->sc_flags |= SC_OP_RXAGGR;
532 common->tx_chainmask = sc->sc_ah->caps.tx_chainmask;
533 common->rx_chainmask = sc->sc_ah->caps.rx_chainmask;
535 ath9k_hw_set_diversity(sc->sc_ah, true);
536 sc->rx.defant = ath9k_hw_getdefantenna(sc->sc_ah);
538 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
540 sc->beacon.slottime = ATH9K_SLOT_TIME_9;
542 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
543 sc->beacon.bslot[i] = NULL;
545 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
546 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
549 static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
550 const struct ath_bus_ops *bus_ops)
552 struct ath9k_platform_data *pdata = sc->dev->platform_data;
553 struct ath_hw *ah = NULL;
554 struct ath_common *common;
558 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
563 ah->hw_version.devid = devid;
564 ah->hw_version.subsysid = subsysid;
565 ah->reg_ops.read = ath9k_ioread32;
566 ah->reg_ops.write = ath9k_iowrite32;
567 ah->reg_ops.rmw = ath9k_reg_rmw;
571 ah->ah_flags |= AH_USE_EEPROM;
572 sc->sc_ah->led_pin = -1;
574 sc->sc_ah->gpio_mask = pdata->gpio_mask;
575 sc->sc_ah->gpio_val = pdata->gpio_val;
576 sc->sc_ah->led_pin = pdata->led_pin;
577 ah->is_clk_25mhz = pdata->is_clk_25mhz;
580 common = ath9k_hw_common(ah);
581 common->ops = &ah->reg_ops;
582 common->bus_ops = bus_ops;
586 common->debug_mask = ath9k_debug;
587 common->btcoex_enabled = ath9k_btcoex_enable == 1;
588 spin_lock_init(&common->cc_lock);
590 spin_lock_init(&sc->sc_serial_rw);
591 spin_lock_init(&sc->sc_pm_lock);
592 mutex_init(&sc->mutex);
593 #ifdef CONFIG_ATH9K_DEBUGFS
594 spin_lock_init(&sc->nodes_lock);
595 INIT_LIST_HEAD(&sc->nodes);
597 tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
598 tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
602 * Cache line size is used to size and align various
603 * structures used to communicate with the hardware.
605 ath_read_cachesize(common, &csz);
606 common->cachelsz = csz << 2; /* convert to bytes */
608 /* Initializes the hardware for all supported chipsets */
609 ret = ath9k_hw_init(ah);
613 if (pdata && pdata->macaddr)
614 memcpy(common->macaddr, pdata->macaddr, ETH_ALEN);
616 ret = ath9k_init_queues(sc);
620 ret = ath9k_init_btcoex(sc);
624 ret = ath9k_init_channels_rates(sc);
628 ath9k_init_crypto(sc);
634 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
635 if (ATH_TXQ_SETUP(sc, i))
636 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
647 static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
649 struct ieee80211_supported_band *sband;
650 struct ieee80211_channel *chan;
651 struct ath_hw *ah = sc->sc_ah;
652 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
655 sband = &sc->sbands[band];
656 for (i = 0; i < sband->n_channels; i++) {
657 chan = &sband->channels[i];
658 ah->curchan = &ah->channels[chan->hw_value];
659 ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20);
660 ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true);
661 chan->max_power = reg->max_power_level / 2;
665 static void ath9k_init_txpower_limits(struct ath_softc *sc)
667 struct ath_hw *ah = sc->sc_ah;
668 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
669 struct ath9k_channel *curchan = ah->curchan;
671 ah->txchainmask = common->tx_chainmask;
672 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
673 ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ);
674 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
675 ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ);
677 ah->curchan = curchan;
680 void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
682 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
684 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
685 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
686 IEEE80211_HW_SIGNAL_DBM |
687 IEEE80211_HW_SUPPORTS_PS |
688 IEEE80211_HW_PS_NULLFUNC_STACK |
689 IEEE80211_HW_SPECTRUM_MGMT |
690 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
692 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
693 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
695 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
696 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
698 hw->wiphy->interface_modes =
699 BIT(NL80211_IFTYPE_P2P_GO) |
700 BIT(NL80211_IFTYPE_P2P_CLIENT) |
701 BIT(NL80211_IFTYPE_AP) |
702 BIT(NL80211_IFTYPE_WDS) |
703 BIT(NL80211_IFTYPE_STATION) |
704 BIT(NL80211_IFTYPE_ADHOC) |
705 BIT(NL80211_IFTYPE_MESH_POINT);
707 if (AR_SREV_5416(sc->sc_ah))
708 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
710 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
714 hw->channel_change_time = 5000;
715 hw->max_listen_interval = 10;
716 hw->max_rate_tries = 10;
717 hw->sta_data_size = sizeof(struct ath_node);
718 hw->vif_data_size = sizeof(struct ath_vif);
720 #ifdef CONFIG_ATH9K_RATE_CONTROL
721 hw->rate_control_algorithm = "ath9k_rate_control";
724 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
725 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
726 &sc->sbands[IEEE80211_BAND_2GHZ];
727 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
728 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
729 &sc->sbands[IEEE80211_BAND_5GHZ];
731 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
732 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
733 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
734 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
735 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
738 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
741 int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
742 const struct ath_bus_ops *bus_ops)
744 struct ieee80211_hw *hw = sc->hw;
745 struct ath_common *common;
748 struct ath_regulatory *reg;
750 /* Bring up device */
751 error = ath9k_init_softc(devid, sc, subsysid, bus_ops);
756 common = ath9k_hw_common(ah);
757 ath9k_set_hw_capab(sc, hw);
759 /* Initialize regulatory */
760 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
765 reg = &common->regulatory;
768 error = ath_tx_init(sc, ATH_TXBUF);
773 error = ath_rx_init(sc, ATH_RXBUF);
777 ath9k_init_txpower_limits(sc);
779 #ifdef CONFIG_MAC80211_LEDS
780 /* must be initialized before ieee80211_register_hw */
781 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
782 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
783 ARRAY_SIZE(ath9k_tpt_blink));
786 /* Register with mac80211 */
787 error = ieee80211_register_hw(hw);
791 error = ath9k_init_debug(ah);
793 ath_err(common, "Unable to create debugfs files\n");
797 /* Handle world regulatory */
798 if (!ath_is_world_regd(reg)) {
799 error = regulatory_hint(hw->wiphy, reg->alpha2);
804 INIT_WORK(&sc->hw_check_work, ath_hw_check);
805 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
806 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
807 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
810 ath_start_rfkill_poll(sc);
815 ieee80211_unregister_hw(hw);
823 ath9k_deinit_softc(sc);
828 /*****************************/
829 /* De-Initialization */
830 /*****************************/
832 static void ath9k_deinit_softc(struct ath_softc *sc)
836 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
837 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
839 if (sc->sbands[IEEE80211_BAND_5GHZ].channels)
840 kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
842 if ((sc->btcoex.no_stomp_timer) &&
843 sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
844 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
846 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
847 if (ATH_TXQ_SETUP(sc, i))
848 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
850 ath9k_hw_deinit(sc->sc_ah);
856 void ath9k_deinit_device(struct ath_softc *sc)
858 struct ieee80211_hw *hw = sc->hw;
862 wiphy_rfkill_stop_polling(sc->hw->wiphy);
865 ath9k_ps_restore(sc);
867 ieee80211_unregister_hw(hw);
870 ath9k_deinit_softc(sc);
873 void ath_descdma_cleanup(struct ath_softc *sc,
874 struct ath_descdma *dd,
875 struct list_head *head)
877 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
880 INIT_LIST_HEAD(head);
881 kfree(dd->dd_bufptr);
882 memset(dd, 0, sizeof(*dd));
885 /************************/
887 /************************/
889 static int __init ath9k_init(void)
893 /* Register rate control algorithm */
894 error = ath_rate_control_register();
897 "ath9k: Unable to register rate control "
903 error = ath_pci_init();
906 "ath9k: No PCI devices found, driver not installed.\n");
908 goto err_rate_unregister;
911 error = ath_ahb_init();
923 ath_rate_control_unregister();
927 module_init(ath9k_init);
929 static void __exit ath9k_exit(void)
931 is_ath9k_unloaded = true;
934 ath_rate_control_unregister();
935 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
937 module_exit(ath9k_exit);