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/dma-mapping.h>
18 #include <linux/slab.h>
19 #include <linux/ath9k_platform.h>
20 #include <linux/module.h>
24 static char *dev_info = "ath9k";
26 MODULE_AUTHOR("Atheros Communications");
27 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
28 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
29 MODULE_LICENSE("Dual BSD/GPL");
31 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
32 module_param_named(debug, ath9k_debug, uint, 0);
33 MODULE_PARM_DESC(debug, "Debugging mask");
35 int ath9k_modparam_nohwcrypt;
36 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444);
37 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
40 module_param_named(blink, led_blink, int, 0444);
41 MODULE_PARM_DESC(blink, "Enable LED blink on activity");
43 static int ath9k_btcoex_enable;
44 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
45 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
47 bool is_ath9k_unloaded;
48 /* We use the hw_value as an index into our private channel structure */
50 #define CHAN2G(_freq, _idx) { \
51 .band = IEEE80211_BAND_2GHZ, \
52 .center_freq = (_freq), \
57 #define CHAN5G(_freq, _idx) { \
58 .band = IEEE80211_BAND_5GHZ, \
59 .center_freq = (_freq), \
64 /* Some 2 GHz radios are actually tunable on 2312-2732
65 * on 5 MHz steps, we support the channels which we know
66 * we have calibration data for all cards though to make
68 static const struct ieee80211_channel ath9k_2ghz_chantable[] = {
69 CHAN2G(2412, 0), /* Channel 1 */
70 CHAN2G(2417, 1), /* Channel 2 */
71 CHAN2G(2422, 2), /* Channel 3 */
72 CHAN2G(2427, 3), /* Channel 4 */
73 CHAN2G(2432, 4), /* Channel 5 */
74 CHAN2G(2437, 5), /* Channel 6 */
75 CHAN2G(2442, 6), /* Channel 7 */
76 CHAN2G(2447, 7), /* Channel 8 */
77 CHAN2G(2452, 8), /* Channel 9 */
78 CHAN2G(2457, 9), /* Channel 10 */
79 CHAN2G(2462, 10), /* Channel 11 */
80 CHAN2G(2467, 11), /* Channel 12 */
81 CHAN2G(2472, 12), /* Channel 13 */
82 CHAN2G(2484, 13), /* Channel 14 */
85 /* Some 5 GHz radios are actually tunable on XXXX-YYYY
86 * on 5 MHz steps, we support the channels which we know
87 * we have calibration data for all cards though to make
89 static const struct ieee80211_channel ath9k_5ghz_chantable[] = {
90 /* _We_ call this UNII 1 */
91 CHAN5G(5180, 14), /* Channel 36 */
92 CHAN5G(5200, 15), /* Channel 40 */
93 CHAN5G(5220, 16), /* Channel 44 */
94 CHAN5G(5240, 17), /* Channel 48 */
95 /* _We_ call this UNII 2 */
96 CHAN5G(5260, 18), /* Channel 52 */
97 CHAN5G(5280, 19), /* Channel 56 */
98 CHAN5G(5300, 20), /* Channel 60 */
99 CHAN5G(5320, 21), /* Channel 64 */
100 /* _We_ call this "Middle band" */
101 CHAN5G(5500, 22), /* Channel 100 */
102 CHAN5G(5520, 23), /* Channel 104 */
103 CHAN5G(5540, 24), /* Channel 108 */
104 CHAN5G(5560, 25), /* Channel 112 */
105 CHAN5G(5580, 26), /* Channel 116 */
106 CHAN5G(5600, 27), /* Channel 120 */
107 CHAN5G(5620, 28), /* Channel 124 */
108 CHAN5G(5640, 29), /* Channel 128 */
109 CHAN5G(5660, 30), /* Channel 132 */
110 CHAN5G(5680, 31), /* Channel 136 */
111 CHAN5G(5700, 32), /* Channel 140 */
112 /* _We_ call this UNII 3 */
113 CHAN5G(5745, 33), /* Channel 149 */
114 CHAN5G(5765, 34), /* Channel 153 */
115 CHAN5G(5785, 35), /* Channel 157 */
116 CHAN5G(5805, 36), /* Channel 161 */
117 CHAN5G(5825, 37), /* Channel 165 */
120 /* Atheros hardware rate code addition for short premble */
121 #define SHPCHECK(__hw_rate, __flags) \
122 ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0)
124 #define RATE(_bitrate, _hw_rate, _flags) { \
125 .bitrate = (_bitrate), \
127 .hw_value = (_hw_rate), \
128 .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
131 static struct ieee80211_rate ath9k_legacy_rates[] = {
133 RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE),
134 RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE),
135 RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE),
146 #ifdef CONFIG_MAC80211_LEDS
147 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = {
148 { .throughput = 0 * 1024, .blink_time = 334 },
149 { .throughput = 1 * 1024, .blink_time = 260 },
150 { .throughput = 5 * 1024, .blink_time = 220 },
151 { .throughput = 10 * 1024, .blink_time = 190 },
152 { .throughput = 20 * 1024, .blink_time = 170 },
153 { .throughput = 50 * 1024, .blink_time = 150 },
154 { .throughput = 70 * 1024, .blink_time = 130 },
155 { .throughput = 100 * 1024, .blink_time = 110 },
156 { .throughput = 200 * 1024, .blink_time = 80 },
157 { .throughput = 300 * 1024, .blink_time = 50 },
161 static void ath9k_deinit_softc(struct ath_softc *sc);
164 * Read and write, they both share the same lock. We do this to serialize
165 * reads and writes on Atheros 802.11n PCI devices only. This is required
166 * as the FIFO on these devices can only accept sanely 2 requests.
169 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
171 struct ath_hw *ah = (struct ath_hw *) hw_priv;
172 struct ath_common *common = ath9k_hw_common(ah);
173 struct ath_softc *sc = (struct ath_softc *) common->priv;
175 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
177 spin_lock_irqsave(&sc->sc_serial_rw, flags);
178 iowrite32(val, sc->mem + reg_offset);
179 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
181 iowrite32(val, sc->mem + reg_offset);
184 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
186 struct ath_hw *ah = (struct ath_hw *) hw_priv;
187 struct ath_common *common = ath9k_hw_common(ah);
188 struct ath_softc *sc = (struct ath_softc *) common->priv;
191 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
193 spin_lock_irqsave(&sc->sc_serial_rw, flags);
194 val = ioread32(sc->mem + reg_offset);
195 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
197 val = ioread32(sc->mem + reg_offset);
201 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
206 val = ioread32(sc->mem + reg_offset);
209 iowrite32(val, sc->mem + reg_offset);
214 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
216 struct ath_hw *ah = (struct ath_hw *) hw_priv;
217 struct ath_common *common = ath9k_hw_common(ah);
218 struct ath_softc *sc = (struct ath_softc *) common->priv;
219 unsigned long uninitialized_var(flags);
222 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
223 spin_lock_irqsave(&sc->sc_serial_rw, flags);
224 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
225 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
227 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
232 /**************************/
234 /**************************/
236 static void setup_ht_cap(struct ath_softc *sc,
237 struct ieee80211_sta_ht_cap *ht_info)
239 struct ath_hw *ah = sc->sc_ah;
240 struct ath_common *common = ath9k_hw_common(ah);
241 u8 tx_streams, rx_streams;
244 ht_info->ht_supported = true;
245 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
246 IEEE80211_HT_CAP_SM_PS |
247 IEEE80211_HT_CAP_SGI_40 |
248 IEEE80211_HT_CAP_DSSSCCK40;
250 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC)
251 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
253 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
254 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
256 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
257 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
259 if (AR_SREV_9330(ah) || AR_SREV_9485(ah))
261 else if (AR_SREV_9462(ah))
263 else if (AR_SREV_9300_20_OR_LATER(ah))
268 if (AR_SREV_9280_20_OR_LATER(ah)) {
269 if (max_streams >= 2)
270 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
271 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
274 /* set up supported mcs set */
275 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
276 tx_streams = ath9k_cmn_count_streams(ah->txchainmask, max_streams);
277 rx_streams = ath9k_cmn_count_streams(ah->rxchainmask, max_streams);
279 ath_dbg(common, ATH_DBG_CONFIG,
280 "TX streams %d, RX streams: %d\n",
281 tx_streams, rx_streams);
283 if (tx_streams != rx_streams) {
284 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
285 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
286 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
289 for (i = 0; i < rx_streams; i++)
290 ht_info->mcs.rx_mask[i] = 0xff;
292 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
295 static int ath9k_reg_notifier(struct wiphy *wiphy,
296 struct regulatory_request *request)
298 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
299 struct ath_softc *sc = hw->priv;
300 struct ath_hw *ah = sc->sc_ah;
301 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
304 ret = ath_reg_notifier_apply(wiphy, request, reg);
308 sc->config.txpowlimit = 2 * ah->curchan->chan->max_power;
310 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
311 sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
312 ath9k_ps_restore(sc);
319 * This function will allocate both the DMA descriptor structure, and the
320 * buffers it contains. These are used to contain the descriptors used
323 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
324 struct list_head *head, const char *name,
325 int nbuf, int ndesc, bool is_tx)
327 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
330 int i, bsize, error, desc_len;
332 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
335 INIT_LIST_HEAD(head);
338 desc_len = sc->sc_ah->caps.tx_desc_len;
340 desc_len = sizeof(struct ath_desc);
342 /* ath_desc must be a multiple of DWORDs */
343 if ((desc_len % 4) != 0) {
344 ath_err(common, "ath_desc not DWORD aligned\n");
345 BUG_ON((desc_len % 4) != 0);
350 dd->dd_desc_len = desc_len * nbuf * ndesc;
353 * Need additional DMA memory because we can't use
354 * descriptors that cross the 4K page boundary. Assume
355 * one skipped descriptor per 4K page.
357 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
359 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
362 while (ndesc_skipped) {
363 dma_len = ndesc_skipped * desc_len;
364 dd->dd_desc_len += dma_len;
366 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
370 /* allocate descriptors */
371 dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
372 &dd->dd_desc_paddr, GFP_KERNEL);
373 if (dd->dd_desc == NULL) {
377 ds = (u8 *) dd->dd_desc;
378 ath_dbg(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
379 name, ds, (u32) dd->dd_desc_len,
380 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
382 /* allocate buffers */
383 bsize = sizeof(struct ath_buf) * nbuf;
384 bf = kzalloc(bsize, GFP_KERNEL);
391 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
393 bf->bf_daddr = DS2PHYS(dd, ds);
395 if (!(sc->sc_ah->caps.hw_caps &
396 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
398 * Skip descriptor addresses which can cause 4KB
399 * boundary crossing (addr + length) with a 32 dword
402 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
403 BUG_ON((caddr_t) bf->bf_desc >=
404 ((caddr_t) dd->dd_desc +
407 ds += (desc_len * ndesc);
409 bf->bf_daddr = DS2PHYS(dd, ds);
412 list_add_tail(&bf->list, head);
416 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
419 memset(dd, 0, sizeof(*dd));
423 static int ath9k_init_btcoex(struct ath_softc *sc)
426 struct ath_hw *ah = sc->sc_ah;
429 switch (sc->sc_ah->btcoex_hw.scheme) {
430 case ATH_BTCOEX_CFG_NONE:
432 case ATH_BTCOEX_CFG_2WIRE:
433 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
435 case ATH_BTCOEX_CFG_3WIRE:
436 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
437 r = ath_init_btcoex_timer(sc);
440 txq = sc->tx.txq_map[WME_AC_BE];
441 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
442 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
444 case ATH_BTCOEX_CFG_MCI:
445 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
446 sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
447 INIT_LIST_HEAD(&sc->btcoex.mci.info);
449 r = ath_mci_setup(sc);
453 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
454 ah->btcoex_hw.mci.ready = false;
455 ah->btcoex_hw.mci.bt_state = 0;
456 ah->btcoex_hw.mci.bt_ver_major = 3;
457 ah->btcoex_hw.mci.bt_ver_minor = 0;
458 ah->btcoex_hw.mci.bt_version_known = false;
459 ah->btcoex_hw.mci.update_2g5g = true;
460 ah->btcoex_hw.mci.is_2g = true;
461 ah->btcoex_hw.mci.wlan_channels_update = false;
462 ah->btcoex_hw.mci.wlan_channels[0] = 0x00000000;
463 ah->btcoex_hw.mci.wlan_channels[1] = 0xffffffff;
464 ah->btcoex_hw.mci.wlan_channels[2] = 0xffffffff;
465 ah->btcoex_hw.mci.wlan_channels[3] = 0x7fffffff;
466 ah->btcoex_hw.mci.query_bt = true;
467 ah->btcoex_hw.mci.unhalt_bt_gpm = true;
468 ah->btcoex_hw.mci.halted_bt_gpm = false;
469 ah->btcoex_hw.mci.need_flush_btinfo = false;
470 ah->btcoex_hw.mci.wlan_cal_seq = 0;
471 ah->btcoex_hw.mci.wlan_cal_done = 0;
472 ah->btcoex_hw.mci.config = 0x2201;
483 static int ath9k_init_queues(struct ath_softc *sc)
487 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
488 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
490 sc->config.cabqReadytime = ATH_CABQ_READY_TIME;
493 for (i = 0; i < WME_NUM_AC; i++) {
494 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
495 sc->tx.txq_map[i]->mac80211_qnum = i;
500 static int ath9k_init_channels_rates(struct ath_softc *sc)
504 BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) +
505 ARRAY_SIZE(ath9k_5ghz_chantable) !=
508 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
509 channels = kmemdup(ath9k_2ghz_chantable,
510 sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
514 sc->sbands[IEEE80211_BAND_2GHZ].channels = channels;
515 sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
516 sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
517 ARRAY_SIZE(ath9k_2ghz_chantable);
518 sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
519 sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
520 ARRAY_SIZE(ath9k_legacy_rates);
523 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
524 channels = kmemdup(ath9k_5ghz_chantable,
525 sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
527 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
528 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
532 sc->sbands[IEEE80211_BAND_5GHZ].channels = channels;
533 sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
534 sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
535 ARRAY_SIZE(ath9k_5ghz_chantable);
536 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
537 ath9k_legacy_rates + 4;
538 sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
539 ARRAY_SIZE(ath9k_legacy_rates) - 4;
544 static void ath9k_init_misc(struct ath_softc *sc)
546 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
548 setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
550 sc->config.txpowlimit = ATH_TXPOWER_MAX;
552 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
553 sc->sc_flags |= SC_OP_TXAGGR;
554 sc->sc_flags |= SC_OP_RXAGGR;
557 sc->rx.defant = ath9k_hw_getdefantenna(sc->sc_ah);
559 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
561 sc->beacon.slottime = ATH9K_SLOT_TIME_9;
563 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
564 sc->beacon.bslot[i] = NULL;
566 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
567 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
570 static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
571 const struct ath_bus_ops *bus_ops)
573 struct ath9k_platform_data *pdata = sc->dev->platform_data;
574 struct ath_hw *ah = NULL;
575 struct ath_common *common;
579 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
584 ah->hw_version.devid = devid;
585 ah->reg_ops.read = ath9k_ioread32;
586 ah->reg_ops.write = ath9k_iowrite32;
587 ah->reg_ops.rmw = ath9k_reg_rmw;
588 atomic_set(&ah->intr_ref_cnt, -1);
592 ah->ah_flags |= AH_USE_EEPROM;
593 sc->sc_ah->led_pin = -1;
595 sc->sc_ah->gpio_mask = pdata->gpio_mask;
596 sc->sc_ah->gpio_val = pdata->gpio_val;
597 sc->sc_ah->led_pin = pdata->led_pin;
598 ah->is_clk_25mhz = pdata->is_clk_25mhz;
599 ah->get_mac_revision = pdata->get_mac_revision;
600 ah->external_reset = pdata->external_reset;
603 common = ath9k_hw_common(ah);
604 common->ops = &ah->reg_ops;
605 common->bus_ops = bus_ops;
609 common->debug_mask = ath9k_debug;
610 common->btcoex_enabled = ath9k_btcoex_enable == 1;
611 common->disable_ani = false;
612 spin_lock_init(&common->cc_lock);
614 spin_lock_init(&sc->sc_serial_rw);
615 spin_lock_init(&sc->sc_pm_lock);
616 mutex_init(&sc->mutex);
617 #ifdef CONFIG_ATH9K_DEBUGFS
618 spin_lock_init(&sc->nodes_lock);
619 spin_lock_init(&sc->debug.samp_lock);
620 INIT_LIST_HEAD(&sc->nodes);
622 tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
623 tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
627 * Cache line size is used to size and align various
628 * structures used to communicate with the hardware.
630 ath_read_cachesize(common, &csz);
631 common->cachelsz = csz << 2; /* convert to bytes */
633 /* Initializes the hardware for all supported chipsets */
634 ret = ath9k_hw_init(ah);
638 if (pdata && pdata->macaddr)
639 memcpy(common->macaddr, pdata->macaddr, ETH_ALEN);
641 ret = ath9k_init_queues(sc);
645 ret = ath9k_init_btcoex(sc);
649 ret = ath9k_init_channels_rates(sc);
653 ath9k_cmn_init_crypto(sc->sc_ah);
659 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
660 if (ATH_TXQ_SETUP(sc, i))
661 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
672 static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
674 struct ieee80211_supported_band *sband;
675 struct ieee80211_channel *chan;
676 struct ath_hw *ah = sc->sc_ah;
679 sband = &sc->sbands[band];
680 for (i = 0; i < sband->n_channels; i++) {
681 chan = &sband->channels[i];
682 ah->curchan = &ah->channels[chan->hw_value];
683 ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20);
684 ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true);
688 static void ath9k_init_txpower_limits(struct ath_softc *sc)
690 struct ath_hw *ah = sc->sc_ah;
691 struct ath9k_channel *curchan = ah->curchan;
693 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
694 ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ);
695 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
696 ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ);
698 ah->curchan = curchan;
701 void ath9k_reload_chainmask_settings(struct ath_softc *sc)
703 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT))
706 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
707 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
708 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
709 setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
713 void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
715 struct ath_hw *ah = sc->sc_ah;
716 struct ath_common *common = ath9k_hw_common(ah);
718 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
719 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
720 IEEE80211_HW_SIGNAL_DBM |
721 IEEE80211_HW_SUPPORTS_PS |
722 IEEE80211_HW_PS_NULLFUNC_STACK |
723 IEEE80211_HW_SPECTRUM_MGMT |
724 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
726 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
727 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
729 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
730 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
732 hw->wiphy->interface_modes =
733 BIT(NL80211_IFTYPE_P2P_GO) |
734 BIT(NL80211_IFTYPE_P2P_CLIENT) |
735 BIT(NL80211_IFTYPE_AP) |
736 BIT(NL80211_IFTYPE_WDS) |
737 BIT(NL80211_IFTYPE_STATION) |
738 BIT(NL80211_IFTYPE_ADHOC) |
739 BIT(NL80211_IFTYPE_MESH_POINT);
741 if (AR_SREV_5416(sc->sc_ah))
742 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
744 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
745 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
749 hw->channel_change_time = 5000;
750 hw->max_listen_interval = 10;
751 hw->max_rate_tries = 10;
752 hw->sta_data_size = sizeof(struct ath_node);
753 hw->vif_data_size = sizeof(struct ath_vif);
755 hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
756 hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
758 /* single chain devices with rx diversity */
759 if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
760 hw->wiphy->available_antennas_rx = BIT(0) | BIT(1);
762 sc->ant_rx = hw->wiphy->available_antennas_rx;
763 sc->ant_tx = hw->wiphy->available_antennas_tx;
765 #ifdef CONFIG_ATH9K_RATE_CONTROL
766 hw->rate_control_algorithm = "ath9k_rate_control";
769 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
770 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
771 &sc->sbands[IEEE80211_BAND_2GHZ];
772 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
773 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
774 &sc->sbands[IEEE80211_BAND_5GHZ];
776 ath9k_reload_chainmask_settings(sc);
778 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
781 int ath9k_init_device(u16 devid, struct ath_softc *sc,
782 const struct ath_bus_ops *bus_ops)
784 struct ieee80211_hw *hw = sc->hw;
785 struct ath_common *common;
788 struct ath_regulatory *reg;
790 /* Bring up device */
791 error = ath9k_init_softc(devid, sc, bus_ops);
796 common = ath9k_hw_common(ah);
797 ath9k_set_hw_capab(sc, hw);
799 /* Initialize regulatory */
800 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
805 reg = &common->regulatory;
808 error = ath_tx_init(sc, ATH_TXBUF);
813 error = ath_rx_init(sc, ATH_RXBUF);
817 ath9k_init_txpower_limits(sc);
819 #ifdef CONFIG_MAC80211_LEDS
820 /* must be initialized before ieee80211_register_hw */
821 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
822 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
823 ARRAY_SIZE(ath9k_tpt_blink));
826 /* Register with mac80211 */
827 error = ieee80211_register_hw(hw);
831 error = ath9k_init_debug(ah);
833 ath_err(common, "Unable to create debugfs files\n");
837 /* Handle world regulatory */
838 if (!ath_is_world_regd(reg)) {
839 error = regulatory_hint(hw->wiphy, reg->alpha2);
844 INIT_WORK(&sc->hw_reset_work, ath_reset_work);
845 INIT_WORK(&sc->hw_check_work, ath_hw_check);
846 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
847 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
848 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
851 ath_start_rfkill_poll(sc);
856 ieee80211_unregister_hw(hw);
864 ath9k_deinit_softc(sc);
869 /*****************************/
870 /* De-Initialization */
871 /*****************************/
873 static void ath9k_deinit_softc(struct ath_softc *sc)
877 if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
878 kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
880 if (sc->sbands[IEEE80211_BAND_5GHZ].channels)
881 kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
883 if ((sc->btcoex.no_stomp_timer) &&
884 sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
885 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
887 if (sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_MCI)
890 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
891 if (ATH_TXQ_SETUP(sc, i))
892 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
894 ath9k_hw_deinit(sc->sc_ah);
900 void ath9k_deinit_device(struct ath_softc *sc)
902 struct ieee80211_hw *hw = sc->hw;
906 wiphy_rfkill_stop_polling(sc->hw->wiphy);
909 ath9k_ps_restore(sc);
911 ieee80211_unregister_hw(hw);
914 ath9k_deinit_softc(sc);
917 void ath_descdma_cleanup(struct ath_softc *sc,
918 struct ath_descdma *dd,
919 struct list_head *head)
921 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
924 INIT_LIST_HEAD(head);
925 kfree(dd->dd_bufptr);
926 memset(dd, 0, sizeof(*dd));
929 /************************/
931 /************************/
933 static int __init ath9k_init(void)
937 /* Register rate control algorithm */
938 error = ath_rate_control_register();
941 "ath9k: Unable to register rate control "
947 error = ath_pci_init();
950 "ath9k: No PCI devices found, driver not installed.\n");
952 goto err_rate_unregister;
955 error = ath_ahb_init();
967 ath_rate_control_unregister();
971 module_init(ath9k_init);
973 static void __exit ath9k_exit(void)
975 is_ath9k_unloaded = true;
978 ath_rate_control_unregister();
979 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
981 module_exit(ath9k_exit);