1 /******************************************************************************
5 * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/etherdevice.h>
32 #include <net/mac80211.h>
34 #include "iwl-eeprom.h"
35 #include "iwl-dev.h" /* FIXME: remove */
36 #include "iwl-debug.h"
39 #include "iwl-rfkill.h"
40 #include "iwl-power.h"
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
47 MODULE_LICENSE("GPL");
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
50 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
51 IWL_RATE_SISO_##s##M_PLCP, \
52 IWL_RATE_MIMO2_##s##M_PLCP,\
53 IWL_RATE_MIMO3_##s##M_PLCP,\
54 IWL_RATE_##r##M_IEEE, \
55 IWL_RATE_##ip##M_INDEX, \
56 IWL_RATE_##in##M_INDEX, \
57 IWL_RATE_##rp##M_INDEX, \
58 IWL_RATE_##rn##M_INDEX, \
59 IWL_RATE_##pp##M_INDEX, \
60 IWL_RATE_##np##M_INDEX }
64 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
66 * If there isn't a valid next or previous rate then INV is used which
67 * maps to IWL_RATE_INVALID
70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
71 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
72 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
73 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
74 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
75 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
76 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
77 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
78 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
79 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
80 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
81 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
82 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
83 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
84 /* FIXME:RS: ^^ should be INV (legacy) */
86 EXPORT_SYMBOL(iwl_rates);
89 * translate ucode response to mac80211 tx status control values
91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
92 struct ieee80211_tx_info *info)
95 struct ieee80211_tx_rate *r = &info->control.rates[0];
97 info->antenna_sel_tx =
98 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
99 if (rate_n_flags & RATE_MCS_HT_MSK)
100 r->flags |= IEEE80211_TX_RC_MCS;
101 if (rate_n_flags & RATE_MCS_GF_MSK)
102 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
103 if (rate_n_flags & RATE_MCS_FAT_MSK)
104 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
105 if (rate_n_flags & RATE_MCS_DUP_MSK)
106 r->flags |= IEEE80211_TX_RC_DUP_DATA;
107 if (rate_n_flags & RATE_MCS_SGI_MSK)
108 r->flags |= IEEE80211_TX_RC_SHORT_GI;
109 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
110 if (info->band == IEEE80211_BAND_5GHZ)
111 rate_index -= IWL_FIRST_OFDM_RATE;
114 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
116 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
121 if (rate_n_flags & RATE_MCS_HT_MSK) {
122 idx = (rate_n_flags & 0xff);
124 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
125 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
126 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
127 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
129 idx += IWL_FIRST_OFDM_RATE;
130 /* skip 9M not supported in ht*/
131 if (idx >= IWL_RATE_9M_INDEX)
133 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
136 /* legacy rate format, search for match in table */
138 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
139 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
145 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
147 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
151 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
152 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
153 if (priv->hw_params.valid_tx_ant & BIT(ind))
159 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
160 EXPORT_SYMBOL(iwl_bcast_addr);
163 /* This function both allocates and initializes hw and priv. */
164 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
165 struct ieee80211_ops *hw_ops)
167 struct iwl_priv *priv;
169 /* mac80211 allocates memory for this device instance, including
170 * space for this driver's private structure */
171 struct ieee80211_hw *hw =
172 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
174 printk(KERN_ERR "%s: Can not allocate network device\n",
185 EXPORT_SYMBOL(iwl_alloc_all);
187 void iwl_hw_detect(struct iwl_priv *priv)
189 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
190 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
191 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
193 EXPORT_SYMBOL(iwl_hw_detect);
195 int iwl_hw_nic_init(struct iwl_priv *priv)
198 struct iwl_rx_queue *rxq = &priv->rxq;
202 spin_lock_irqsave(&priv->lock, flags);
203 priv->cfg->ops->lib->apm_ops.init(priv);
204 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
205 spin_unlock_irqrestore(&priv->lock, flags);
207 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
209 priv->cfg->ops->lib->apm_ops.config(priv);
211 /* Allocate the RX queue, or reset if it is already allocated */
213 ret = iwl_rx_queue_alloc(priv);
215 IWL_ERR(priv, "Unable to initialize Rx queue\n");
219 iwl_rx_queue_reset(priv, rxq);
221 iwl_rx_replenish(priv);
223 iwl_rx_init(priv, rxq);
225 spin_lock_irqsave(&priv->lock, flags);
227 rxq->need_update = 1;
228 iwl_rx_queue_update_write_ptr(priv, rxq);
230 spin_unlock_irqrestore(&priv->lock, flags);
232 /* Allocate and init all Tx and Command queues */
233 ret = iwl_txq_ctx_reset(priv);
237 set_bit(STATUS_INIT, &priv->status);
241 EXPORT_SYMBOL(iwl_hw_nic_init);
246 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
248 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
251 priv->qos_data.def_qos_parm.qos_flags = 0;
253 if (priv->qos_data.qos_cap.q_AP.queue_request &&
254 !priv->qos_data.qos_cap.q_AP.txop_request)
255 priv->qos_data.def_qos_parm.qos_flags |=
256 QOS_PARAM_FLG_TXOP_TYPE_MSK;
257 if (priv->qos_data.qos_active)
258 priv->qos_data.def_qos_parm.qos_flags |=
259 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
261 if (priv->current_ht_config.is_ht)
262 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
264 if (force || iwl_is_associated(priv)) {
265 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
266 priv->qos_data.qos_active,
267 priv->qos_data.def_qos_parm.qos_flags);
269 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
270 sizeof(struct iwl_qosparam_cmd),
271 &priv->qos_data.def_qos_parm, NULL);
274 EXPORT_SYMBOL(iwl_activate_qos);
277 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
278 * (802.11b) (802.11a/g)
279 * AC_BK 15 1023 7 0 0
280 * AC_BE 15 1023 3 0 0
281 * AC_VI 7 15 2 6.016ms 3.008ms
282 * AC_VO 3 7 2 3.264ms 1.504ms
284 void iwl_reset_qos(struct iwl_priv *priv)
289 bool is_legacy = false;
293 spin_lock_irqsave(&priv->lock, flags);
294 /* QoS always active in AP and ADHOC mode
295 * In STA mode wait for association
297 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
298 priv->iw_mode == NL80211_IFTYPE_AP)
299 priv->qos_data.qos_active = 1;
301 priv->qos_data.qos_active = 0;
303 /* check for legacy mode */
304 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
305 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
306 (priv->iw_mode == NL80211_IFTYPE_STATION &&
307 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
312 if (priv->qos_data.qos_active)
316 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
317 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
318 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
319 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
320 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
322 if (priv->qos_data.qos_active) {
325 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
326 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
327 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
328 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
329 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
333 priv->qos_data.def_qos_parm.ac[i].cw_min =
334 cpu_to_le16((cw_min + 1) / 2 - 1);
335 priv->qos_data.def_qos_parm.ac[i].cw_max =
337 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
339 priv->qos_data.def_qos_parm.ac[i].edca_txop =
342 priv->qos_data.def_qos_parm.ac[i].edca_txop =
344 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
348 priv->qos_data.def_qos_parm.ac[i].cw_min =
349 cpu_to_le16((cw_min + 1) / 4 - 1);
350 priv->qos_data.def_qos_parm.ac[i].cw_max =
351 cpu_to_le16((cw_min + 1) / 2 - 1);
352 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
353 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
355 priv->qos_data.def_qos_parm.ac[i].edca_txop =
358 priv->qos_data.def_qos_parm.ac[i].edca_txop =
361 for (i = 1; i < 4; i++) {
362 priv->qos_data.def_qos_parm.ac[i].cw_min =
364 priv->qos_data.def_qos_parm.ac[i].cw_max =
366 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
367 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
368 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
371 IWL_DEBUG_QOS(priv, "set QoS to default \n");
373 spin_unlock_irqrestore(&priv->lock, flags);
375 EXPORT_SYMBOL(iwl_reset_qos);
377 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
378 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
379 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
380 struct ieee80211_sta_ht_cap *ht_info,
381 enum ieee80211_band band)
383 u16 max_bit_rate = 0;
384 u8 rx_chains_num = priv->hw_params.rx_chains_num;
385 u8 tx_chains_num = priv->hw_params.tx_chains_num;
388 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
390 ht_info->ht_supported = true;
392 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
393 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
394 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
395 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
397 max_bit_rate = MAX_BIT_RATE_20_MHZ;
398 if (priv->hw_params.fat_channel & BIT(band)) {
399 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
400 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
401 ht_info->mcs.rx_mask[4] = 0x01;
402 max_bit_rate = MAX_BIT_RATE_40_MHZ;
405 if (priv->cfg->mod_params->amsdu_size_8K)
406 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
408 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
409 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
411 ht_info->mcs.rx_mask[0] = 0xFF;
412 if (rx_chains_num >= 2)
413 ht_info->mcs.rx_mask[1] = 0xFF;
414 if (rx_chains_num >= 3)
415 ht_info->mcs.rx_mask[2] = 0xFF;
417 /* Highest supported Rx data rate */
418 max_bit_rate *= rx_chains_num;
419 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
420 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
422 /* Tx MCS capabilities */
423 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
424 if (tx_chains_num != rx_chains_num) {
425 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
426 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
427 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
431 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
432 struct ieee80211_rate *rates)
436 for (i = 0; i < IWL_RATE_COUNT; i++) {
437 rates[i].bitrate = iwl_rates[i].ieee * 5;
438 rates[i].hw_value = i; /* Rate scaling will work on indexes */
439 rates[i].hw_value_short = i;
441 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
443 * If CCK != 1M then set short preamble rate flag.
446 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
447 0 : IEEE80211_RATE_SHORT_PREAMBLE;
454 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
456 int iwlcore_init_geos(struct iwl_priv *priv)
458 struct iwl_channel_info *ch;
459 struct ieee80211_supported_band *sband;
460 struct ieee80211_channel *channels;
461 struct ieee80211_channel *geo_ch;
462 struct ieee80211_rate *rates;
465 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
466 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
467 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
468 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
472 channels = kzalloc(sizeof(struct ieee80211_channel) *
473 priv->channel_count, GFP_KERNEL);
477 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
484 /* 5.2GHz channels start after the 2.4GHz channels */
485 sband = &priv->bands[IEEE80211_BAND_5GHZ];
486 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
488 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
489 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
491 if (priv->cfg->sku & IWL_SKU_N)
492 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
493 IEEE80211_BAND_5GHZ);
495 sband = &priv->bands[IEEE80211_BAND_2GHZ];
496 sband->channels = channels;
498 sband->bitrates = rates;
499 sband->n_bitrates = IWL_RATE_COUNT;
501 if (priv->cfg->sku & IWL_SKU_N)
502 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
503 IEEE80211_BAND_2GHZ);
505 priv->ieee_channels = channels;
506 priv->ieee_rates = rates;
508 for (i = 0; i < priv->channel_count; i++) {
509 ch = &priv->channel_info[i];
511 /* FIXME: might be removed if scan is OK */
512 if (!is_channel_valid(ch))
515 if (is_channel_a_band(ch))
516 sband = &priv->bands[IEEE80211_BAND_5GHZ];
518 sband = &priv->bands[IEEE80211_BAND_2GHZ];
520 geo_ch = &sband->channels[sband->n_channels++];
522 geo_ch->center_freq =
523 ieee80211_channel_to_frequency(ch->channel);
524 geo_ch->max_power = ch->max_power_avg;
525 geo_ch->max_antenna_gain = 0xff;
526 geo_ch->hw_value = ch->channel;
528 if (is_channel_valid(ch)) {
529 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
530 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
532 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
533 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
535 if (ch->flags & EEPROM_CHANNEL_RADAR)
536 geo_ch->flags |= IEEE80211_CHAN_RADAR;
538 geo_ch->flags |= ch->fat_extension_channel;
540 if (ch->max_power_avg > priv->tx_power_channel_lmt)
541 priv->tx_power_channel_lmt = ch->max_power_avg;
543 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
546 /* Save flags for reg domain usage */
547 geo_ch->orig_flags = geo_ch->flags;
549 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
550 ch->channel, geo_ch->center_freq,
551 is_channel_a_band(ch) ? "5.2" : "2.4",
552 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
553 "restricted" : "valid",
557 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
558 priv->cfg->sku & IWL_SKU_A) {
559 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
560 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
561 priv->pci_dev->device,
562 priv->pci_dev->subsystem_device);
563 priv->cfg->sku &= ~IWL_SKU_A;
566 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
567 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
568 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
570 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
574 EXPORT_SYMBOL(iwlcore_init_geos);
577 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
579 void iwlcore_free_geos(struct iwl_priv *priv)
581 kfree(priv->ieee_channels);
582 kfree(priv->ieee_rates);
583 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
585 EXPORT_SYMBOL(iwlcore_free_geos);
587 static bool is_single_rx_stream(struct iwl_priv *priv)
589 return !priv->current_ht_config.is_ht ||
590 ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
591 (priv->current_ht_config.mcs.rx_mask[2] == 0));
594 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
595 enum ieee80211_band band,
596 u16 channel, u8 extension_chan_offset)
598 const struct iwl_channel_info *ch_info;
600 ch_info = iwl_get_channel_info(priv, band, channel);
601 if (!is_channel_valid(ch_info))
604 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
605 return !(ch_info->fat_extension_channel &
606 IEEE80211_CHAN_NO_HT40PLUS);
607 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
608 return !(ch_info->fat_extension_channel &
609 IEEE80211_CHAN_NO_HT40MINUS);
614 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
615 struct ieee80211_sta_ht_cap *sta_ht_inf)
617 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
619 if ((!iwl_ht_conf->is_ht) ||
620 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
621 (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
625 if ((!sta_ht_inf->ht_supported) ||
626 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
630 return iwl_is_channel_extension(priv, priv->band,
631 le16_to_cpu(priv->staging_rxon.channel),
632 iwl_ht_conf->extension_chan_offset);
634 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
636 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
638 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
641 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
643 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
646 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
649 * iwl_check_rxon_cmd - validate RXON structure is valid
651 * NOTE: This is really only useful during development and can eventually
652 * be #ifdef'd out once the driver is stable and folks aren't actively
655 int iwl_check_rxon_cmd(struct iwl_priv *priv)
659 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
661 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
662 error |= le32_to_cpu(rxon->flags &
663 (RXON_FLG_TGJ_NARROW_BAND_MSK |
664 RXON_FLG_RADAR_DETECT_MSK));
666 IWL_WARN(priv, "check 24G fields %d | %d\n",
669 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
670 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
672 IWL_WARN(priv, "check 52 fields %d | %d\n",
674 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
676 IWL_WARN(priv, "check 52 CCK %d | %d\n",
679 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
681 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
683 /* make sure basic rates 6Mbps and 1Mbps are supported */
684 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
685 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
687 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
689 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
691 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
693 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
694 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
696 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
699 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
700 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
702 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
705 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
706 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
708 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
712 IWL_WARN(priv, "Tuning to channel %d\n",
713 le16_to_cpu(rxon->channel));
716 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
721 EXPORT_SYMBOL(iwl_check_rxon_cmd);
724 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
725 * @priv: staging_rxon is compared to active_rxon
727 * If the RXON structure is changing enough to require a new tune,
728 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
729 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
731 int iwl_full_rxon_required(struct iwl_priv *priv)
734 /* These items are only settable from the full RXON command */
735 if (!(iwl_is_associated(priv)) ||
736 compare_ether_addr(priv->staging_rxon.bssid_addr,
737 priv->active_rxon.bssid_addr) ||
738 compare_ether_addr(priv->staging_rxon.node_addr,
739 priv->active_rxon.node_addr) ||
740 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
741 priv->active_rxon.wlap_bssid_addr) ||
742 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
743 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
744 (priv->staging_rxon.air_propagation !=
745 priv->active_rxon.air_propagation) ||
746 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
747 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
748 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
749 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
750 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
751 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
752 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
755 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
756 * be updated with the RXON_ASSOC command -- however only some
757 * flag transitions are allowed using RXON_ASSOC */
759 /* Check if we are not switching bands */
760 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
761 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
764 /* Check if we are switching association toggle */
765 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
766 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
771 EXPORT_SYMBOL(iwl_full_rxon_required);
773 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
779 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
780 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
782 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
784 /* Find lowest valid rate */
785 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
786 i = iwl_rates[i].next_ieee) {
787 if (rate_mask & (1 << i))
788 return iwl_rates[i].plcp;
791 /* No valid rate was found. Assign the lowest one */
792 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
793 return IWL_RATE_1M_PLCP;
795 return IWL_RATE_6M_PLCP;
797 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
799 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
801 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
804 if (!ht_info->is_ht) {
805 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
806 RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
807 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
808 RXON_FLG_FAT_PROT_MSK |
809 RXON_FLG_HT_PROT_MSK);
813 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
814 if (iwl_is_fat_tx_allowed(priv, NULL))
815 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
817 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
818 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
820 /* Note: control channel is opposite of extension channel */
821 switch (ht_info->extension_chan_offset) {
822 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
823 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
825 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
826 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
828 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
830 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
834 val = ht_info->ht_protection;
836 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
838 if (priv->cfg->ops->hcmd->set_rxon_chain)
839 priv->cfg->ops->hcmd->set_rxon_chain(priv);
841 IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
842 "rxon flags 0x%X operation mode :0x%X "
843 "extension channel offset 0x%x\n",
844 ht_info->mcs.rx_mask[0],
845 ht_info->mcs.rx_mask[1],
846 ht_info->mcs.rx_mask[2],
847 le32_to_cpu(rxon->flags), ht_info->ht_protection,
848 ht_info->extension_chan_offset);
851 EXPORT_SYMBOL(iwl_set_rxon_ht);
853 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
854 #define IWL_NUM_RX_CHAINS_SINGLE 2
855 #define IWL_NUM_IDLE_CHAINS_DUAL 2
856 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
858 /* Determine how many receiver/antenna chains to use.
859 * More provides better reception via diversity. Fewer saves power.
860 * MIMO (dual stream) requires at least 2, but works better with 3.
861 * This does not determine *which* chains to use, just how many.
863 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
865 bool is_single = is_single_rx_stream(priv);
866 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
868 /* # of Rx chains to use when expecting MIMO. */
869 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
870 WLAN_HT_CAP_SM_PS_STATIC)))
871 return IWL_NUM_RX_CHAINS_SINGLE;
873 return IWL_NUM_RX_CHAINS_MULTIPLE;
876 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
879 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
880 /* # Rx chains when idling and maybe trying to save power */
881 switch (priv->current_ht_config.sm_ps) {
882 case WLAN_HT_CAP_SM_PS_STATIC:
883 case WLAN_HT_CAP_SM_PS_DYNAMIC:
884 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
885 IWL_NUM_IDLE_CHAINS_SINGLE;
887 case WLAN_HT_CAP_SM_PS_DISABLED:
888 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
890 case WLAN_HT_CAP_SM_PS_INVALID:
892 IWL_ERR(priv, "invalid mimo ps mode %d\n",
893 priv->current_ht_config.sm_ps);
902 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
905 res = (chain_bitmap & BIT(0)) >> 0;
906 res += (chain_bitmap & BIT(1)) >> 1;
907 res += (chain_bitmap & BIT(2)) >> 2;
908 res += (chain_bitmap & BIT(4)) >> 4;
913 * iwl_is_monitor_mode - Determine if interface in monitor mode
915 * priv->iw_mode is set in add_interface, but add_interface is
916 * never called for monitor mode. The only way mac80211 informs us about
917 * monitor mode is through configuring filters (call to configure_filter).
919 bool iwl_is_monitor_mode(struct iwl_priv *priv)
921 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
923 EXPORT_SYMBOL(iwl_is_monitor_mode);
926 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
928 * Selects how many and which Rx receivers/antennas/chains to use.
929 * This should not be used for scan command ... it puts data in wrong place.
931 void iwl_set_rxon_chain(struct iwl_priv *priv)
933 bool is_single = is_single_rx_stream(priv);
934 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
935 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
939 /* Tell uCode which antennas are actually connected.
940 * Before first association, we assume all antennas are connected.
941 * Just after first association, iwl_chain_noise_calibration()
942 * checks which antennas actually *are* connected. */
943 if (priv->chain_noise_data.active_chains)
944 active_chains = priv->chain_noise_data.active_chains;
946 active_chains = priv->hw_params.valid_rx_ant;
948 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
950 /* How many receivers should we use? */
951 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
952 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
955 /* correct rx chain count according hw settings
956 * and chain noise calibration
958 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
959 if (valid_rx_cnt < active_rx_cnt)
960 active_rx_cnt = valid_rx_cnt;
962 if (valid_rx_cnt < idle_rx_cnt)
963 idle_rx_cnt = valid_rx_cnt;
965 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
966 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
968 /* copied from 'iwl_bg_request_scan()' */
969 /* Force use of chains B and C (0x6) for Rx for 4965
970 * Avoid A (0x1) because of its off-channel reception on A-band.
971 * MIMO is not used here, but value is required */
972 if (iwl_is_monitor_mode(priv) &&
973 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
974 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
975 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
976 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
977 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
978 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
981 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
983 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
984 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
986 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
988 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
989 priv->staging_rxon.rx_chain,
990 active_rx_cnt, idle_rx_cnt);
992 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
993 active_rx_cnt < idle_rx_cnt);
995 EXPORT_SYMBOL(iwl_set_rxon_chain);
998 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
999 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1000 * @channel: Any channel valid for the requested phymode
1002 * In addition to setting the staging RXON, priv->phymode is also set.
1004 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1005 * in the staging RXON flag structure based on the phymode
1007 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1009 enum ieee80211_band band = ch->band;
1010 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1012 if (!iwl_get_channel_info(priv, band, channel)) {
1013 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1018 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1019 (priv->band == band))
1022 priv->staging_rxon.channel = cpu_to_le16(channel);
1023 if (band == IEEE80211_BAND_5GHZ)
1024 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1026 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1030 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1034 EXPORT_SYMBOL(iwl_set_rxon_channel);
1036 void iwl_set_flags_for_band(struct iwl_priv *priv,
1037 enum ieee80211_band band)
1039 if (band == IEEE80211_BAND_5GHZ) {
1040 priv->staging_rxon.flags &=
1041 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1042 | RXON_FLG_CCK_MSK);
1043 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1045 /* Copied from iwl_post_associate() */
1046 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1047 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1049 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1051 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1052 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1054 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1055 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1056 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1059 EXPORT_SYMBOL(iwl_set_flags_for_band);
1062 * initialize rxon structure with default values from eeprom
1064 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1066 const struct iwl_channel_info *ch_info;
1068 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1071 case NL80211_IFTYPE_AP:
1072 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1075 case NL80211_IFTYPE_STATION:
1076 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1077 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1080 case NL80211_IFTYPE_ADHOC:
1081 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1082 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1083 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1084 RXON_FILTER_ACCEPT_GRP_MSK;
1088 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1093 /* TODO: Figure out when short_preamble would be set and cache from
1095 if (!hw_to_local(priv->hw)->short_preamble)
1096 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1098 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1101 ch_info = iwl_get_channel_info(priv, priv->band,
1102 le16_to_cpu(priv->active_rxon.channel));
1105 ch_info = &priv->channel_info[0];
1108 * in some case A channels are all non IBSS
1109 * in this case force B/G channel
1111 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1112 !(is_channel_ibss(ch_info)))
1113 ch_info = &priv->channel_info[0];
1115 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1116 priv->band = ch_info->band;
1118 iwl_set_flags_for_band(priv, priv->band);
1120 priv->staging_rxon.ofdm_basic_rates =
1121 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1122 priv->staging_rxon.cck_basic_rates =
1123 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1125 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1126 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1127 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1128 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1129 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1130 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1131 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1133 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1135 static void iwl_set_rate(struct iwl_priv *priv)
1137 const struct ieee80211_supported_band *hw = NULL;
1138 struct ieee80211_rate *rate;
1141 hw = iwl_get_hw_mode(priv, priv->band);
1143 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1147 priv->active_rate = 0;
1148 priv->active_rate_basic = 0;
1150 for (i = 0; i < hw->n_bitrates; i++) {
1151 rate = &(hw->bitrates[i]);
1152 if (rate->hw_value < IWL_RATE_COUNT)
1153 priv->active_rate |= (1 << rate->hw_value);
1156 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1157 priv->active_rate, priv->active_rate_basic);
1160 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1161 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1164 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1165 priv->staging_rxon.cck_basic_rates =
1166 ((priv->active_rate_basic &
1167 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1169 priv->staging_rxon.cck_basic_rates =
1170 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1172 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1173 priv->staging_rxon.ofdm_basic_rates =
1174 ((priv->active_rate_basic &
1175 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1176 IWL_FIRST_OFDM_RATE) & 0xFF;
1178 priv->staging_rxon.ofdm_basic_rates =
1179 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1182 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1184 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1185 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1186 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1187 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1188 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1189 rxon->channel = csa->channel;
1190 priv->staging_rxon.channel = csa->channel;
1192 EXPORT_SYMBOL(iwl_rx_csa);
1194 #ifdef CONFIG_IWLWIFI_DEBUG
1195 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1197 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1199 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1200 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1201 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1202 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1203 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1204 le32_to_cpu(rxon->filter_flags));
1205 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1206 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1207 rxon->ofdm_basic_rates);
1208 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1209 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1210 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1211 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1216 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1218 void iwl_irq_handle_error(struct iwl_priv *priv)
1220 /* Set the FW error flag -- cleared on iwl_down */
1221 set_bit(STATUS_FW_ERROR, &priv->status);
1223 /* Cancel currently queued command. */
1224 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1226 #ifdef CONFIG_IWLWIFI_DEBUG
1227 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1228 iwl_dump_nic_error_log(priv);
1229 iwl_dump_nic_event_log(priv);
1230 iwl_print_rx_config_cmd(priv);
1234 wake_up_interruptible(&priv->wait_command_queue);
1236 /* Keep the restart process from trying to send host
1237 * commands by clearing the INIT status bit */
1238 clear_bit(STATUS_READY, &priv->status);
1240 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1241 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1242 "Restarting adapter due to uCode error.\n");
1244 if (priv->cfg->mod_params->restart_fw)
1245 queue_work(priv->workqueue, &priv->restart);
1248 EXPORT_SYMBOL(iwl_irq_handle_error);
1250 void iwl_configure_filter(struct ieee80211_hw *hw,
1251 unsigned int changed_flags,
1252 unsigned int *total_flags,
1253 int mc_count, struct dev_addr_list *mc_list)
1255 struct iwl_priv *priv = hw->priv;
1256 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1258 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1259 changed_flags, *total_flags);
1261 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1262 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1263 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1265 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1267 if (changed_flags & FIF_ALLMULTI) {
1268 if (*total_flags & FIF_ALLMULTI)
1269 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1271 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1273 if (changed_flags & FIF_CONTROL) {
1274 if (*total_flags & FIF_CONTROL)
1275 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1277 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1279 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1280 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1281 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1283 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1286 /* We avoid iwl_commit_rxon here to commit the new filter flags
1287 * since mac80211 will call ieee80211_hw_config immediately.
1288 * (mc_list is not supported at this time). Otherwise, we need to
1289 * queue a background iwl_commit_rxon work.
1292 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1293 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1295 EXPORT_SYMBOL(iwl_configure_filter);
1297 int iwl_setup_mac(struct iwl_priv *priv)
1300 struct ieee80211_hw *hw = priv->hw;
1301 hw->rate_control_algorithm = "iwl-agn-rs";
1303 /* Tell mac80211 our characteristics */
1304 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1305 IEEE80211_HW_NOISE_DBM |
1306 IEEE80211_HW_AMPDU_AGGREGATION |
1307 IEEE80211_HW_SPECTRUM_MGMT;
1308 hw->wiphy->interface_modes =
1309 BIT(NL80211_IFTYPE_STATION) |
1310 BIT(NL80211_IFTYPE_ADHOC);
1312 hw->wiphy->custom_regulatory = true;
1314 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1315 /* we create the 802.11 header and a zero-length SSID element */
1316 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1318 /* Default value; 4 EDCA QOS priorities */
1321 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1323 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1324 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1325 &priv->bands[IEEE80211_BAND_2GHZ];
1326 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1327 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1328 &priv->bands[IEEE80211_BAND_5GHZ];
1330 ret = ieee80211_register_hw(priv->hw);
1332 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1335 priv->mac80211_registered = 1;
1339 EXPORT_SYMBOL(iwl_setup_mac);
1341 int iwl_set_hw_params(struct iwl_priv *priv)
1343 priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
1344 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1345 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1346 if (priv->cfg->mod_params->amsdu_size_8K)
1347 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1349 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1350 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1352 if (priv->cfg->mod_params->disable_11n)
1353 priv->cfg->sku &= ~IWL_SKU_N;
1355 /* Device-specific setup */
1356 return priv->cfg->ops->lib->set_hw_params(priv);
1358 EXPORT_SYMBOL(iwl_set_hw_params);
1360 int iwl_init_drv(struct iwl_priv *priv)
1364 priv->ibss_beacon = NULL;
1366 spin_lock_init(&priv->lock);
1367 spin_lock_init(&priv->sta_lock);
1368 spin_lock_init(&priv->hcmd_lock);
1370 INIT_LIST_HEAD(&priv->free_frames);
1372 mutex_init(&priv->mutex);
1374 /* Clear the driver's (not device's) station table */
1375 priv->cfg->ops->smgmt->clear_station_table(priv);
1377 priv->data_retry_limit = -1;
1378 priv->ieee_channels = NULL;
1379 priv->ieee_rates = NULL;
1380 priv->band = IEEE80211_BAND_2GHZ;
1382 priv->iw_mode = NL80211_IFTYPE_STATION;
1384 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1386 /* Choose which receivers/antennas to use */
1387 if (priv->cfg->ops->hcmd->set_rxon_chain)
1388 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1390 iwl_init_scan_params(priv);
1392 iwl_reset_qos(priv);
1394 priv->qos_data.qos_active = 0;
1395 priv->qos_data.qos_cap.val = 0;
1397 priv->rates_mask = IWL_RATES_MASK;
1398 /* If power management is turned on, default to CAM mode */
1399 priv->power_mode = IWL_POWER_MODE_CAM;
1400 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1402 ret = iwl_init_channel_map(priv);
1404 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1408 ret = iwlcore_init_geos(priv);
1410 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1411 goto err_free_channel_map;
1413 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1417 err_free_channel_map:
1418 iwl_free_channel_map(priv);
1422 EXPORT_SYMBOL(iwl_init_drv);
1424 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1427 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1428 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1430 IWL_TX_POWER_TARGET_POWER_MIN);
1434 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1435 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1437 IWL_TX_POWER_TARGET_POWER_MAX);
1441 if (priv->tx_power_user_lmt != tx_power)
1444 priv->tx_power_user_lmt = tx_power;
1446 /* if nic is not up don't send command */
1447 if (!iwl_is_ready_rf(priv))
1450 if (force && priv->cfg->ops->lib->send_tx_power)
1451 ret = priv->cfg->ops->lib->send_tx_power(priv);
1455 EXPORT_SYMBOL(iwl_set_tx_power);
1457 void iwl_uninit_drv(struct iwl_priv *priv)
1459 iwl_calib_free_results(priv);
1460 iwlcore_free_geos(priv);
1461 iwl_free_channel_map(priv);
1464 EXPORT_SYMBOL(iwl_uninit_drv);
1467 void iwl_disable_interrupts(struct iwl_priv *priv)
1469 clear_bit(STATUS_INT_ENABLED, &priv->status);
1471 /* disable interrupts from uCode/NIC to host */
1472 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1474 /* acknowledge/clear/reset any interrupts still pending
1475 * from uCode or flow handler (Rx/Tx DMA) */
1476 iwl_write32(priv, CSR_INT, 0xffffffff);
1477 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1478 IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1480 EXPORT_SYMBOL(iwl_disable_interrupts);
1482 void iwl_enable_interrupts(struct iwl_priv *priv)
1484 IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1485 set_bit(STATUS_INT_ENABLED, &priv->status);
1486 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1488 EXPORT_SYMBOL(iwl_enable_interrupts);
1490 irqreturn_t iwl_isr(int irq, void *data)
1492 struct iwl_priv *priv = data;
1493 u32 inta, inta_mask;
1498 spin_lock(&priv->lock);
1500 /* Disable (but don't clear!) interrupts here to avoid
1501 * back-to-back ISRs and sporadic interrupts from our NIC.
1502 * If we have something to service, the tasklet will re-enable ints.
1503 * If we *don't* have something, we'll re-enable before leaving here. */
1504 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1505 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1507 /* Discover which interrupts are active/pending */
1508 inta = iwl_read32(priv, CSR_INT);
1509 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1511 /* Ignore interrupt if there's nothing in NIC to service.
1512 * This may be due to IRQ shared with another device,
1513 * or due to sporadic interrupts thrown from our NIC. */
1514 if (!inta && !inta_fh) {
1515 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1519 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1520 /* Hardware disappeared. It might have already raised
1522 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1526 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1527 inta, inta_mask, inta_fh);
1529 inta &= ~CSR_INT_BIT_SCD;
1531 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1532 if (likely(inta || inta_fh))
1533 tasklet_schedule(&priv->irq_tasklet);
1536 spin_unlock(&priv->lock);
1540 /* re-enable interrupts here since we don't have anything to service. */
1541 /* only Re-enable if diabled by irq */
1542 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1543 iwl_enable_interrupts(priv);
1544 spin_unlock(&priv->lock);
1547 EXPORT_SYMBOL(iwl_isr);
1549 int iwl_send_bt_config(struct iwl_priv *priv)
1551 struct iwl_bt_cmd bt_cmd = {
1559 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1560 sizeof(struct iwl_bt_cmd), &bt_cmd);
1562 EXPORT_SYMBOL(iwl_send_bt_config);
1564 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1567 struct iwl_host_cmd cmd = {
1568 .id = REPLY_STATISTICS_CMD,
1569 .meta.flags = flags,
1570 .len = sizeof(stat_flags),
1571 .data = (u8 *) &stat_flags,
1573 return iwl_send_cmd(priv, &cmd);
1575 EXPORT_SYMBOL(iwl_send_statistics_request);
1578 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1579 * using sample data 100 bytes apart. If these sample points are good,
1580 * it's a pretty good bet that everything between them is good, too.
1582 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1589 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1591 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1592 /* read data comes through single port, auto-incr addr */
1593 /* NOTE: Use the debugless read so we don't flood kernel log
1594 * if IWL_DL_IO is set */
1595 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1596 i + IWL49_RTC_INST_LOWER_BOUND);
1597 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1598 if (val != le32_to_cpu(*image)) {
1610 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1611 * looking at all data.
1613 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1621 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1623 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1624 IWL49_RTC_INST_LOWER_BOUND);
1627 for (; len > 0; len -= sizeof(u32), image++) {
1628 /* read data comes through single port, auto-incr addr */
1629 /* NOTE: Use the debugless read so we don't flood kernel log
1630 * if IWL_DL_IO is set */
1631 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1632 if (val != le32_to_cpu(*image)) {
1633 IWL_ERR(priv, "uCode INST section is invalid at "
1634 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1635 save_len - len, val, le32_to_cpu(*image));
1644 IWL_DEBUG_INFO(priv,
1645 "ucode image in INSTRUCTION memory is good\n");
1651 * iwl_verify_ucode - determine which instruction image is in SRAM,
1652 * and verify its contents
1654 int iwl_verify_ucode(struct iwl_priv *priv)
1661 image = (__le32 *)priv->ucode_boot.v_addr;
1662 len = priv->ucode_boot.len;
1663 ret = iwlcore_verify_inst_sparse(priv, image, len);
1665 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1669 /* Try initialize */
1670 image = (__le32 *)priv->ucode_init.v_addr;
1671 len = priv->ucode_init.len;
1672 ret = iwlcore_verify_inst_sparse(priv, image, len);
1674 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1678 /* Try runtime/protocol */
1679 image = (__le32 *)priv->ucode_code.v_addr;
1680 len = priv->ucode_code.len;
1681 ret = iwlcore_verify_inst_sparse(priv, image, len);
1683 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1687 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1689 /* Since nothing seems to match, show first several data entries in
1690 * instruction SRAM, so maybe visual inspection will give a clue.
1691 * Selection of bootstrap image (vs. other images) is arbitrary. */
1692 image = (__le32 *)priv->ucode_boot.v_addr;
1693 len = priv->ucode_boot.len;
1694 ret = iwl_verify_inst_full(priv, image, len);
1698 EXPORT_SYMBOL(iwl_verify_ucode);
1701 static const char *desc_lookup_text[] = {
1706 "NMI_INTERRUPT_WDG",
1710 "HW_ERROR_TUNE_LOCK",
1711 "HW_ERROR_TEMPERATURE",
1712 "ILLEGAL_CHAN_FREQ",
1715 "NMI_INTERRUPT_HOST",
1716 "NMI_INTERRUPT_ACTION_PT",
1717 "NMI_INTERRUPT_UNKNOWN",
1718 "UCODE_VERSION_MISMATCH",
1719 "HW_ERROR_ABS_LOCK",
1720 "HW_ERROR_CAL_LOCK_FAIL",
1721 "NMI_INTERRUPT_INST_ACTION_PT",
1722 "NMI_INTERRUPT_DATA_ACTION_PT",
1724 "NMI_INTERRUPT_TRM",
1725 "NMI_INTERRUPT_BREAK_POINT"
1733 static const char *desc_lookup(int i)
1735 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1737 if (i < 0 || i > max)
1740 return desc_lookup_text[i];
1743 #define ERROR_START_OFFSET (1 * sizeof(u32))
1744 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1746 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1749 u32 desc, time, count, base, data1;
1750 u32 blink1, blink2, ilink1, ilink2;
1752 if (priv->ucode_type == UCODE_INIT)
1753 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1755 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1757 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1758 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1762 count = iwl_read_targ_mem(priv, base);
1764 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1765 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1766 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1767 priv->status, count);
1770 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1771 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1772 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1773 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1774 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1775 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1776 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1777 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1778 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1780 IWL_ERR(priv, "Desc Time "
1781 "data1 data2 line\n");
1782 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1783 desc_lookup(desc), desc, time, data1, data2, line);
1784 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1785 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1789 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1791 #define EVENT_START_OFFSET (4 * sizeof(u32))
1794 * iwl_print_event_log - Dump error event log to syslog
1797 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1798 u32 num_events, u32 mode)
1801 u32 base; /* SRAM byte address of event log header */
1802 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1803 u32 ptr; /* SRAM byte address of log data */
1804 u32 ev, time, data; /* event log data */
1806 if (num_events == 0)
1808 if (priv->ucode_type == UCODE_INIT)
1809 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1811 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1814 event_size = 2 * sizeof(u32);
1816 event_size = 3 * sizeof(u32);
1818 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1820 /* "time" is actually "data" for mode 0 (no timestamp).
1821 * place event id # at far right for easier visual parsing. */
1822 for (i = 0; i < num_events; i++) {
1823 ev = iwl_read_targ_mem(priv, ptr);
1825 time = iwl_read_targ_mem(priv, ptr);
1829 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1831 data = iwl_read_targ_mem(priv, ptr);
1833 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1839 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1841 u32 base; /* SRAM byte address of event log header */
1842 u32 capacity; /* event log capacity in # entries */
1843 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1844 u32 num_wraps; /* # times uCode wrapped to top of log */
1845 u32 next_entry; /* index of next entry to be written by uCode */
1846 u32 size; /* # entries that we'll print */
1848 if (priv->ucode_type == UCODE_INIT)
1849 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1851 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1853 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1854 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1858 /* event log header */
1859 capacity = iwl_read_targ_mem(priv, base);
1860 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1861 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1862 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1864 size = num_wraps ? capacity : next_entry;
1866 /* bail out if nothing in log */
1868 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1872 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1875 /* if uCode has wrapped back to top of log, start at the oldest entry,
1876 * i.e the next one that uCode would fill. */
1878 iwl_print_event_log(priv, next_entry,
1879 capacity - next_entry, mode);
1880 /* (then/else) start at top of log */
1881 iwl_print_event_log(priv, 0, next_entry, mode);
1884 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1886 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1888 struct iwl_ct_kill_config cmd;
1889 unsigned long flags;
1892 spin_lock_irqsave(&priv->lock, flags);
1893 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1894 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1895 spin_unlock_irqrestore(&priv->lock, flags);
1897 cmd.critical_temperature_R =
1898 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1900 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1903 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1905 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1906 "critical temperature is %d\n",
1907 cmd.critical_temperature_R);
1909 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1915 * Use: Sets the device's internal card state to enable, disable, or halt
1917 * When in the 'enable' state the card operates as normal.
1918 * When in the 'disable' state, the card enters into a low power mode.
1919 * When in the 'halt' state, the card is shut down and must be fully
1920 * restarted to come back on.
1922 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1924 struct iwl_host_cmd cmd = {
1925 .id = REPLY_CARD_STATE_CMD,
1928 .meta.flags = meta_flag,
1931 return iwl_send_cmd(priv, &cmd);
1933 EXPORT_SYMBOL(iwl_send_card_state);
1935 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1937 unsigned long flags;
1939 if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1942 IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1944 iwl_scan_cancel(priv);
1945 /* FIXME: This is a workaround for AP */
1946 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1947 spin_lock_irqsave(&priv->lock, flags);
1948 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1949 CSR_UCODE_SW_BIT_RFKILL);
1950 spin_unlock_irqrestore(&priv->lock, flags);
1951 /* call the host command only if no hw rf-kill set */
1952 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1954 iwl_send_card_state(priv,
1955 CARD_STATE_CMD_DISABLE, 0);
1956 set_bit(STATUS_RF_KILL_SW, &priv->status);
1957 /* make sure mac80211 stop sending Tx frame */
1958 if (priv->mac80211_registered)
1959 ieee80211_stop_queues(priv->hw);
1962 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1964 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1966 unsigned long flags;
1968 if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1971 IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
1973 spin_lock_irqsave(&priv->lock, flags);
1974 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1976 /* If the driver is up it will receive CARD_STATE_NOTIFICATION
1977 * notification where it will clear SW rfkill status.
1978 * Setting it here would break the handler. Only if the
1979 * interface is down we can set here since we don't
1980 * receive any further notification.
1983 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1984 spin_unlock_irqrestore(&priv->lock, flags);
1989 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1990 spin_lock_irqsave(&priv->reg_lock, flags);
1991 if (!iwl_grab_nic_access(priv))
1992 iwl_release_nic_access(priv);
1993 spin_unlock_irqrestore(&priv->reg_lock, flags);
1995 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1996 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
1997 "disabled by HW switch\n");
2001 /* when driver is up while rfkill is on, it wont receive
2002 * any CARD_STATE_NOTIFICATION notifications so we have to
2003 * restart it in here
2005 if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
2006 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2007 if (!iwl_is_rfkill(priv))
2008 queue_work(priv->workqueue, &priv->up);
2011 /* If the driver is already loaded, it will receive
2012 * CARD_STATE_NOTIFICATION notifications and the handler will
2013 * call restart to reload the driver.
2017 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
2019 void iwl_bg_rf_kill(struct work_struct *work)
2021 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2023 wake_up_interruptible(&priv->wait_command_queue);
2025 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2028 mutex_lock(&priv->mutex);
2030 if (!iwl_is_rfkill(priv)) {
2031 IWL_DEBUG_RF_KILL(priv,
2032 "HW and/or SW RF Kill no longer active, restarting "
2034 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2036 queue_work(priv->workqueue, &priv->restart);
2038 /* make sure mac80211 stop sending Tx frame */
2039 if (priv->mac80211_registered)
2040 ieee80211_stop_queues(priv->hw);
2042 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2043 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2044 "disabled by SW switch\n");
2046 IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2047 "Kill switch must be turned off for "
2048 "wireless networking to work.\n");
2050 mutex_unlock(&priv->mutex);
2051 iwl_rfkill_set_hw_state(priv);
2053 EXPORT_SYMBOL(iwl_bg_rf_kill);
2055 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2056 struct iwl_rx_mem_buffer *rxb)
2058 #ifdef CONFIG_IWLWIFI_DEBUG
2059 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2060 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2061 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2062 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2065 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2067 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2068 struct iwl_rx_mem_buffer *rxb)
2070 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2071 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2072 "notification for %s:\n",
2073 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2074 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2076 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2078 void iwl_rx_reply_error(struct iwl_priv *priv,
2079 struct iwl_rx_mem_buffer *rxb)
2081 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2083 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2084 "seq 0x%04X ser 0x%08X\n",
2085 le32_to_cpu(pkt->u.err_resp.error_type),
2086 get_cmd_string(pkt->u.err_resp.cmd_id),
2087 pkt->u.err_resp.cmd_id,
2088 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2089 le32_to_cpu(pkt->u.err_resp.error_info));
2091 EXPORT_SYMBOL(iwl_rx_reply_error);
2093 void iwl_clear_isr_stats(struct iwl_priv *priv)
2095 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2097 EXPORT_SYMBOL(iwl_clear_isr_stats);
2099 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2100 const struct ieee80211_tx_queue_params *params)
2102 struct iwl_priv *priv = hw->priv;
2103 unsigned long flags;
2106 IWL_DEBUG_MAC80211(priv, "enter\n");
2108 if (!iwl_is_ready_rf(priv)) {
2109 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2113 if (queue >= AC_NUM) {
2114 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2118 q = AC_NUM - 1 - queue;
2120 spin_lock_irqsave(&priv->lock, flags);
2122 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2123 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2124 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2125 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2126 cpu_to_le16((params->txop * 32));
2128 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2129 priv->qos_data.qos_active = 1;
2131 if (priv->iw_mode == NL80211_IFTYPE_AP)
2132 iwl_activate_qos(priv, 1);
2133 else if (priv->assoc_id && iwl_is_associated(priv))
2134 iwl_activate_qos(priv, 0);
2136 spin_unlock_irqrestore(&priv->lock, flags);
2138 IWL_DEBUG_MAC80211(priv, "leave\n");
2141 EXPORT_SYMBOL(iwl_mac_conf_tx);
2143 static void iwl_ht_conf(struct iwl_priv *priv,
2144 struct ieee80211_bss_conf *bss_conf)
2146 struct ieee80211_sta_ht_cap *ht_conf;
2147 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2148 struct ieee80211_sta *sta;
2150 IWL_DEBUG_MAC80211(priv, "enter: \n");
2152 if (!iwl_conf->is_ht)
2157 * It is totally wrong to base global information on something
2158 * that is valid only when associated, alas, this driver works
2159 * that way and I don't know how to fix it.
2163 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2168 ht_conf = &sta->ht_cap;
2170 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2171 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2172 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2173 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2175 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2176 iwl_conf->max_amsdu_size =
2177 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2179 iwl_conf->supported_chan_width =
2180 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2183 * XXX: The HT configuration needs to be moved into iwl_mac_config()
2184 * to be done there correctly.
2187 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2188 if (conf_is_ht40_minus(&priv->hw->conf))
2189 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2190 else if (conf_is_ht40_plus(&priv->hw->conf))
2191 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2193 /* If no above or below channel supplied disable FAT channel */
2194 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2195 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2196 iwl_conf->supported_chan_width = 0;
2198 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2200 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2202 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2203 iwl_conf->ht_protection =
2204 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2205 iwl_conf->non_GF_STA_present =
2206 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2210 IWL_DEBUG_MAC80211(priv, "leave\n");
2213 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2214 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2215 struct ieee80211_vif *vif,
2216 struct ieee80211_bss_conf *bss_conf,
2219 struct iwl_priv *priv = hw->priv;
2222 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2224 if (!iwl_is_alive(priv))
2227 mutex_lock(&priv->mutex);
2229 if (changes & BSS_CHANGED_BEACON &&
2230 priv->iw_mode == NL80211_IFTYPE_AP) {
2231 dev_kfree_skb(priv->ibss_beacon);
2232 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2235 if ((changes & BSS_CHANGED_BSSID) && !iwl_is_rfkill(priv)) {
2236 /* If there is currently a HW scan going on in the background
2237 * then we need to cancel it else the RXON below will fail. */
2238 if (iwl_scan_cancel_timeout(priv, 100)) {
2239 IWL_WARN(priv, "Aborted scan still in progress "
2241 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2242 mutex_unlock(&priv->mutex);
2245 memcpy(priv->staging_rxon.bssid_addr,
2246 bss_conf->bssid, ETH_ALEN);
2248 /* TODO: Audit driver for usage of these members and see
2249 * if mac80211 deprecates them (priv->bssid looks like it
2250 * shouldn't be there, but I haven't scanned the IBSS code
2251 * to verify) - jpk */
2252 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2254 if (priv->iw_mode == NL80211_IFTYPE_AP)
2255 iwlcore_config_ap(priv);
2257 int rc = iwlcore_commit_rxon(priv);
2258 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2259 iwl_rxon_add_station(
2260 priv, priv->active_rxon.bssid_addr, 1);
2262 } else if (!iwl_is_rfkill(priv)) {
2263 iwl_scan_cancel_timeout(priv, 100);
2264 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2265 iwlcore_commit_rxon(priv);
2268 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2269 changes & BSS_CHANGED_BEACON) {
2270 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2273 iwl_mac_beacon_update(hw, beacon);
2276 mutex_unlock(&priv->mutex);
2278 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2279 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2280 bss_conf->use_short_preamble);
2281 if (bss_conf->use_short_preamble)
2282 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2284 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2287 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2288 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2289 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2290 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2292 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2295 if (changes & BSS_CHANGED_HT) {
2296 iwl_ht_conf(priv, bss_conf);
2298 if (priv->cfg->ops->hcmd->set_rxon_chain)
2299 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2302 if (changes & BSS_CHANGED_ASSOC) {
2303 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2304 /* This should never happen as this function should
2305 * never be called from interrupt context. */
2306 if (WARN_ON_ONCE(in_interrupt()))
2308 if (bss_conf->assoc) {
2309 priv->assoc_id = bss_conf->aid;
2310 priv->beacon_int = bss_conf->beacon_int;
2311 priv->power_data.dtim_period = bss_conf->dtim_period;
2312 priv->timestamp = bss_conf->timestamp;
2313 priv->assoc_capability = bss_conf->assoc_capability;
2315 /* we have just associated, don't start scan too early
2316 * leave time for EAPOL exchange to complete
2318 priv->next_scan_jiffies = jiffies +
2319 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2320 mutex_lock(&priv->mutex);
2321 priv->cfg->ops->lib->post_associate(priv);
2322 mutex_unlock(&priv->mutex);
2325 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2327 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2328 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2329 ret = iwl_send_rxon_assoc(priv);
2331 /* Sync active_rxon with latest change. */
2332 memcpy((void *)&priv->active_rxon,
2333 &priv->staging_rxon,
2334 sizeof(struct iwl_rxon_cmd));
2336 IWL_DEBUG_MAC80211(priv, "leave\n");
2338 EXPORT_SYMBOL(iwl_bss_info_changed);
2340 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2342 struct iwl_priv *priv = hw->priv;
2343 unsigned long flags;
2346 IWL_DEBUG_MAC80211(priv, "enter\n");
2348 if (!iwl_is_ready_rf(priv)) {
2349 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2353 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2354 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2358 spin_lock_irqsave(&priv->lock, flags);
2360 if (priv->ibss_beacon)
2361 dev_kfree_skb(priv->ibss_beacon);
2363 priv->ibss_beacon = skb;
2366 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2367 priv->timestamp = le64_to_cpu(timestamp);
2369 IWL_DEBUG_MAC80211(priv, "leave\n");
2370 spin_unlock_irqrestore(&priv->lock, flags);
2372 iwl_reset_qos(priv);
2374 priv->cfg->ops->lib->post_associate(priv);
2379 EXPORT_SYMBOL(iwl_mac_beacon_update);
2381 int iwl_set_mode(struct iwl_priv *priv, int mode)
2383 if (mode == NL80211_IFTYPE_ADHOC) {
2384 const struct iwl_channel_info *ch_info;
2386 ch_info = iwl_get_channel_info(priv,
2388 le16_to_cpu(priv->staging_rxon.channel));
2390 if (!ch_info || !is_channel_ibss(ch_info)) {
2391 IWL_ERR(priv, "channel %d not IBSS channel\n",
2392 le16_to_cpu(priv->staging_rxon.channel));
2397 iwl_connection_init_rx_config(priv, mode);
2399 if (priv->cfg->ops->hcmd->set_rxon_chain)
2400 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2402 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2404 priv->cfg->ops->smgmt->clear_station_table(priv);
2406 /* dont commit rxon if rf-kill is on*/
2407 if (!iwl_is_ready_rf(priv))
2410 cancel_delayed_work(&priv->scan_check);
2411 if (iwl_scan_cancel_timeout(priv, 100)) {
2412 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2413 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2417 iwlcore_commit_rxon(priv);
2421 EXPORT_SYMBOL(iwl_set_mode);
2423 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2424 struct ieee80211_if_init_conf *conf)
2426 struct iwl_priv *priv = hw->priv;
2427 unsigned long flags;
2429 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2432 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2436 spin_lock_irqsave(&priv->lock, flags);
2437 priv->vif = conf->vif;
2438 priv->iw_mode = conf->type;
2440 spin_unlock_irqrestore(&priv->lock, flags);
2442 mutex_lock(&priv->mutex);
2444 if (conf->mac_addr) {
2445 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2446 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2449 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2450 /* we are not ready, will run again when ready */
2451 set_bit(STATUS_MODE_PENDING, &priv->status);
2453 mutex_unlock(&priv->mutex);
2455 IWL_DEBUG_MAC80211(priv, "leave\n");
2458 EXPORT_SYMBOL(iwl_mac_add_interface);
2460 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2461 struct ieee80211_if_init_conf *conf)
2463 struct iwl_priv *priv = hw->priv;
2465 IWL_DEBUG_MAC80211(priv, "enter\n");
2467 mutex_lock(&priv->mutex);
2469 if (iwl_is_ready_rf(priv)) {
2470 iwl_scan_cancel_timeout(priv, 100);
2471 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2472 iwlcore_commit_rxon(priv);
2474 if (priv->vif == conf->vif) {
2476 memset(priv->bssid, 0, ETH_ALEN);
2478 mutex_unlock(&priv->mutex);
2480 IWL_DEBUG_MAC80211(priv, "leave\n");
2483 EXPORT_SYMBOL(iwl_mac_remove_interface);
2486 * iwl_mac_config - mac80211 config callback
2488 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2489 * be set inappropriately and the driver currently sets the hardware up to
2490 * use it whenever needed.
2492 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2494 struct iwl_priv *priv = hw->priv;
2495 const struct iwl_channel_info *ch_info;
2496 struct ieee80211_conf *conf = &hw->conf;
2497 unsigned long flags = 0;
2500 int scan_active = 0;
2502 mutex_lock(&priv->mutex);
2504 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2505 conf->channel->hw_value, changed);
2507 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2508 test_bit(STATUS_SCANNING, &priv->status))) {
2510 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2514 /* during scanning mac80211 will delay channel setting until
2515 * scan finish with changed = 0
2517 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2521 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2522 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2523 if (!is_channel_valid(ch_info)) {
2524 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2529 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2530 !is_channel_ibss(ch_info)) {
2531 IWL_ERR(priv, "channel %d in band %d not "
2533 conf->channel->hw_value, conf->channel->band);
2538 priv->current_ht_config.is_ht = conf_is_ht(conf);
2540 spin_lock_irqsave(&priv->lock, flags);
2543 /* if we are switching from ht to 2.4 clear flags
2544 * from any ht related info since 2.4 does not
2546 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2547 priv->staging_rxon.flags = 0;
2549 iwl_set_rxon_channel(priv, conf->channel);
2551 iwl_set_flags_for_band(priv, conf->channel->band);
2552 spin_unlock_irqrestore(&priv->lock, flags);
2554 /* The list of supported rates and rate mask can be different
2555 * for each band; since the band may have changed, reset
2556 * the rate mask to what mac80211 lists */
2560 if (changed & IEEE80211_CONF_CHANGE_PS &&
2561 priv->iw_mode == NL80211_IFTYPE_STATION) {
2562 priv->power_data.power_disabled =
2563 !(conf->flags & IEEE80211_CONF_PS);
2564 ret = iwl_power_update_mode(priv, 0);
2566 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2569 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2570 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2571 priv->tx_power_user_lmt, conf->power_level);
2573 iwl_set_tx_power(priv, conf->power_level, false);
2576 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2577 if (priv->cfg->ops->hcmd->set_rxon_chain)
2578 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2580 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2581 if (conf->radio_enabled &&
2582 iwl_radio_kill_sw_enable_radio(priv)) {
2583 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
2584 "waiting for uCode\n");
2588 if (!conf->radio_enabled)
2589 iwl_radio_kill_sw_disable_radio(priv);
2592 if (!conf->radio_enabled) {
2593 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2597 if (!iwl_is_ready(priv)) {
2598 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2605 if (memcmp(&priv->active_rxon,
2606 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2607 iwlcore_commit_rxon(priv);
2609 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2613 IWL_DEBUG_MAC80211(priv, "leave\n");
2614 mutex_unlock(&priv->mutex);
2617 EXPORT_SYMBOL(iwl_mac_config);
2619 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2620 struct ieee80211_tx_queue_stats *stats)
2622 struct iwl_priv *priv = hw->priv;
2624 struct iwl_tx_queue *txq;
2625 struct iwl_queue *q;
2626 unsigned long flags;
2628 IWL_DEBUG_MAC80211(priv, "enter\n");
2630 if (!iwl_is_ready_rf(priv)) {
2631 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2635 spin_lock_irqsave(&priv->lock, flags);
2637 for (i = 0; i < AC_NUM; i++) {
2638 txq = &priv->txq[i];
2640 avail = iwl_queue_space(q);
2642 stats[i].len = q->n_window - avail;
2643 stats[i].limit = q->n_window - q->high_mark;
2644 stats[i].count = q->n_window;
2647 spin_unlock_irqrestore(&priv->lock, flags);
2649 IWL_DEBUG_MAC80211(priv, "leave\n");
2653 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2655 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2657 struct iwl_priv *priv = hw->priv;
2658 unsigned long flags;
2660 mutex_lock(&priv->mutex);
2661 IWL_DEBUG_MAC80211(priv, "enter\n");
2663 spin_lock_irqsave(&priv->lock, flags);
2664 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2665 spin_unlock_irqrestore(&priv->lock, flags);
2667 iwl_reset_qos(priv);
2669 spin_lock_irqsave(&priv->lock, flags);
2671 priv->assoc_capability = 0;
2672 priv->assoc_station_added = 0;
2674 /* new association get rid of ibss beacon skb */
2675 if (priv->ibss_beacon)
2676 dev_kfree_skb(priv->ibss_beacon);
2678 priv->ibss_beacon = NULL;
2680 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2681 priv->timestamp = 0;
2682 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2683 priv->beacon_int = 0;
2685 spin_unlock_irqrestore(&priv->lock, flags);
2687 if (!iwl_is_ready_rf(priv)) {
2688 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2689 mutex_unlock(&priv->mutex);
2693 /* we are restarting association process
2694 * clear RXON_FILTER_ASSOC_MSK bit
2696 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2697 iwl_scan_cancel_timeout(priv, 100);
2698 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2699 iwlcore_commit_rxon(priv);
2702 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2703 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2704 mutex_unlock(&priv->mutex);
2710 mutex_unlock(&priv->mutex);
2712 IWL_DEBUG_MAC80211(priv, "leave\n");
2714 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2718 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2720 struct iwl_priv *priv = pci_get_drvdata(pdev);
2723 * This function is called when system goes into suspend state
2724 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2725 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2726 * it will not call apm_ops.stop() to stop the DMA operation.
2727 * Calling apm_ops.stop here to make sure we stop the DMA.
2729 priv->cfg->ops->lib->apm_ops.stop(priv);
2731 pci_save_state(pdev);
2732 pci_disable_device(pdev);
2733 pci_set_power_state(pdev, PCI_D3hot);
2737 EXPORT_SYMBOL(iwl_pci_suspend);
2739 int iwl_pci_resume(struct pci_dev *pdev)
2741 struct iwl_priv *priv = pci_get_drvdata(pdev);
2744 pci_set_power_state(pdev, PCI_D0);
2745 ret = pci_enable_device(pdev);
2748 pci_restore_state(pdev);
2749 iwl_enable_interrupts(priv);
2753 EXPORT_SYMBOL(iwl_pci_resume);
2755 #endif /* CONFIG_PM */